Merge "API: Fix missing @NonNull annotations"
diff --git a/Android.bp b/Android.bp
index e39d1e7..0407c41 100644
--- a/Android.bp
+++ b/Android.bp
@@ -674,7 +674,7 @@
         "ext",
     ],
 
-    jarjar_rules: ":framework-hidl-jarjar",
+    jarjar_rules: "jarjar_rules_hidl.txt",
 
     static_libs: [
         "apex_aidl_interface-java",
@@ -684,18 +684,24 @@
         "android.hardware.cas-V1.0-java",
         "android.hardware.contexthub-V1.0-java",
         "android.hardware.health-V1.0-java-constants",
+        "android.hardware.radio-V1.0-java",
+        "android.hardware.radio-V1.1-java",
+        "android.hardware.radio-V1.2-java",
+        "android.hardware.radio-V1.3-java",
+        "android.hardware.radio-V1.4-java",
+        "android.hardware.radio.config-V1.0-java",
+        "android.hardware.radio.config-V1.1-java",
+        "android.hardware.radio.config-V1.2-java",
+        "android.hardware.radio.deprecated-V1.0-java",
         "android.hardware.thermal-V1.0-java-constants",
         "android.hardware.tv.input-V1.0-java-constants",
         "android.hardware.usb-V1.0-java-constants",
         "android.hardware.usb-V1.1-java-constants",
+        "android.hardware.usb.gadget-V1.0-java",
         "android.hardware.vibrator-V1.0-java",
         "android.hardware.vibrator-V1.1-java",
         "android.hardware.vibrator-V1.2-java",
         "android.hardware.wifi-V1.0-java-constants",
-        "android.hardware.radio-V1.0-java",
-        "android.hardware.radio-V1.3-java",
-        "android.hardware.radio-V1.4-java",
-        "android.hardware.usb.gadget-V1.0-java",
         "networkstack-aidl-interfaces-java",
         "netd_aidl_interface-java",
     ],
@@ -730,11 +736,6 @@
     ],
 }
 
-filegroup {
-    name: "framework-hidl-jarjar",
-    srcs: ["jarjar_rules_hidl.txt"],
-}
-
 java_library {
     name: "framework",
     defaults: ["framework-defaults"],
@@ -759,19 +760,6 @@
 }
 
 // A temporary build target that is conditionally included on the bootclasspath if
-// org.apache.http.legacy library has been removed and which provides support for
-// maintaining backwards compatibility for APKs that target pre-P and depend on
-// org.apache.http.legacy classes. This is used iff REMOVE_OAHL_FROM_BCP=true is
-// specified on the build command line.
-java_library {
-    name: "framework-oahl-backward-compatibility",
-    installable: true,
-    srcs: [
-        "core/java/android/content/pm/OrgApacheHttpLegacyUpdater.java",
-    ],
-}
-
-// A temporary build target that is conditionally included on the bootclasspath if
 // android.test.base library has been removed and which provides support for
 // maintaining backwards compatibility for APKs that target pre-P and depend on
 // android.test.base classes. This is used iff REMOVE_ATB_FROM_BCP=true is
@@ -852,6 +840,32 @@
     api_dir: "aidl/networkstack",
 }
 
+filegroup {
+    name: "framework-networkstack-shared-srcs",
+    srcs: [
+        // TODO: remove these annotations as soon as we can use andoid.support.annotations.*
+        "core/java/android/annotation/NonNull.java",
+        "core/java/android/annotation/Nullable.java",
+        "core/java/android/annotation/IntDef.java",
+        "core/java/android/annotation/IntRange.java",
+        "core/java/android/annotation/UnsupportedAppUsage.java",
+        "core/java/android/net/DhcpResults.java",
+        "core/java/android/util/LocalLog.java",
+        "core/java/com/android/internal/annotations/GuardedBy.java",
+        "core/java/com/android/internal/annotations/VisibleForTesting.java",
+        "core/java/com/android/internal/util/HexDump.java",
+        "core/java/com/android/internal/util/IndentingPrintWriter.java",
+        "core/java/com/android/internal/util/IState.java",
+        "core/java/com/android/internal/util/MessageUtils.java",
+        "core/java/com/android/internal/util/Preconditions.java",
+        "core/java/com/android/internal/util/RingBufferIndices.java",
+        "core/java/com/android/internal/util/State.java",
+        "core/java/com/android/internal/util/StateMachine.java",
+        "core/java/com/android/internal/util/WakeupMessage.java",
+        "core/java/android/net/shared/*.java",
+    ]
+}
+
 // Build ext.jar
 // ============================================================
 java_library {
diff --git a/api/current.txt b/api/current.txt
index c128f81..db91b9d 100755
--- a/api/current.txt
+++ b/api/current.txt
@@ -6450,6 +6450,7 @@
     method @Nullable public String[] getAccountTypesWithManagementDisabled();
     method @Nullable public java.util.List<android.content.ComponentName> getActiveAdmins();
     method @NonNull public java.util.Set<java.lang.String> getAffiliationIds(@NonNull android.content.ComponentName);
+    method @Nullable public java.util.List<java.lang.String> getAlwaysOnVpnLockdownWhitelist(@NonNull android.content.ComponentName);
     method @Nullable public String getAlwaysOnVpnPackage(@NonNull android.content.ComponentName);
     method @WorkerThread @NonNull public android.os.Bundle getApplicationRestrictions(@Nullable android.content.ComponentName, String);
     method @Deprecated @Nullable public String getApplicationRestrictionsManagingPackage(@NonNull android.content.ComponentName);
@@ -6519,6 +6520,7 @@
     method public boolean isActivePasswordSufficient();
     method public boolean isAdminActive(@NonNull android.content.ComponentName);
     method public boolean isAffiliatedUser();
+    method public boolean isAlwaysOnVpnLockdownEnabled(@NonNull android.content.ComponentName);
     method public boolean isApplicationHidden(@NonNull android.content.ComponentName, String);
     method public boolean isBackupServiceEnabled(@NonNull android.content.ComponentName);
     method @Deprecated public boolean isCallerApplicationRestrictionsManagingPackage();
@@ -6555,7 +6557,8 @@
     method @Nullable public java.util.List<android.app.admin.SecurityLog.SecurityEvent> retrieveSecurityLogs(@NonNull android.content.ComponentName);
     method public void setAccountManagementDisabled(@NonNull android.content.ComponentName, String, boolean);
     method public void setAffiliationIds(@NonNull android.content.ComponentName, @NonNull java.util.Set<java.lang.String>);
-    method public void setAlwaysOnVpnPackage(@NonNull android.content.ComponentName, @Nullable String, boolean) throws android.content.pm.PackageManager.NameNotFoundException, java.lang.UnsupportedOperationException;
+    method public void setAlwaysOnVpnPackage(@NonNull android.content.ComponentName, @Nullable String, boolean) throws android.content.pm.PackageManager.NameNotFoundException;
+    method public void setAlwaysOnVpnPackage(@NonNull android.content.ComponentName, @Nullable String, boolean, @Nullable java.util.List<java.lang.String>) throws android.content.pm.PackageManager.NameNotFoundException;
     method public boolean setApplicationHidden(@NonNull android.content.ComponentName, String, boolean);
     method @WorkerThread public void setApplicationRestrictions(@Nullable android.content.ComponentName, String, android.os.Bundle);
     method @Deprecated public void setApplicationRestrictionsManagingPackage(@NonNull android.content.ComponentName, @Nullable String) throws android.content.pm.PackageManager.NameNotFoundException;
@@ -27850,6 +27853,7 @@
     method public android.os.ParcelFileDescriptor establish();
     method public android.net.VpnService.Builder setBlocking(boolean);
     method public android.net.VpnService.Builder setConfigureIntent(android.app.PendingIntent);
+    method public android.net.VpnService.Builder setHttpProxy(android.net.ProxyInfo);
     method public android.net.VpnService.Builder setMtu(int);
     method public android.net.VpnService.Builder setSession(String);
     method public android.net.VpnService.Builder setUnderlyingNetworks(android.net.Network[]);
@@ -29086,6 +29090,7 @@
   }
 
   public final class NfcAdapter {
+    method public boolean deviceSupportsNfcSecure();
     method public void disableForegroundDispatch(android.app.Activity);
     method @Deprecated public void disableForegroundNdefPush(android.app.Activity);
     method public void disableReaderMode(android.app.Activity);
@@ -29098,6 +29103,7 @@
     method @Deprecated public boolean invokeBeam(android.app.Activity);
     method public boolean isEnabled();
     method @Deprecated public boolean isNdefPushEnabled();
+    method public boolean isNfcSecureEnabled();
     method @Deprecated public void setBeamPushUris(android.net.Uri[], android.app.Activity);
     method @Deprecated public void setBeamPushUrisCallback(android.nfc.NfcAdapter.CreateBeamUrisCallback, android.app.Activity);
     method @Deprecated public void setNdefPushMessage(android.nfc.NdefMessage, android.app.Activity, android.app.Activity...);
@@ -41953,8 +41959,8 @@
   }
 
   public static final class VideoProfile.CameraCapabilities implements android.os.Parcelable {
-    ctor public VideoProfile.CameraCapabilities(int, int);
-    ctor public VideoProfile.CameraCapabilities(int, int, boolean, float);
+    ctor public VideoProfile.CameraCapabilities(@IntRange(from=0) int, @IntRange(from=0) int);
+    ctor public VideoProfile.CameraCapabilities(@IntRange(from=0) int, @IntRange(from=0) int, boolean, @FloatRange(from=1.0f) float);
     method public int describeContents();
     method public int getHeight();
     method public float getMaxZoom();
@@ -42124,7 +42130,9 @@
     field public static final String KEY_CARRIER_NAME_OVERRIDE_BOOL = "carrier_name_override_bool";
     field public static final String KEY_CARRIER_NAME_STRING = "carrier_name_string";
     field public static final String KEY_CARRIER_SETTINGS_ENABLE_BOOL = "carrier_settings_enable_bool";
+    field public static final String KEY_CARRIER_SUPPORTS_SS_OVER_UT_BOOL = "carrier_supports_ss_over_ut_bool";
     field public static final String KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL = "carrier_use_ims_first_for_emergency_bool";
+    field public static final String KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL = "carrier_ut_provisioning_required_bool";
     field public static final String KEY_CARRIER_VOLTE_AVAILABLE_BOOL = "carrier_volte_available_bool";
     field public static final String KEY_CARRIER_VOLTE_PROVISIONED_BOOL = "carrier_volte_provisioned_bool";
     field public static final String KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL = "carrier_volte_provisioning_required_bool";
@@ -42212,6 +42220,9 @@
     field public static final String KEY_MONTHLY_DATA_CYCLE_DAY_INT = "monthly_data_cycle_day_int";
     field public static final String KEY_ONLY_SINGLE_DC_ALLOWED_INT_ARRAY = "only_single_dc_allowed_int_array";
     field public static final String KEY_OPERATOR_SELECTION_EXPAND_BOOL = "operator_selection_expand_bool";
+    field public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG = "opportunistic_network_data_switch_hysteresis_time_long";
+    field public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG = "opportunistic_network_entry_or_exit_hysteresis_time_long";
+    field public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_BANDWIDTH_INT = "opportunistic_network_entry_threshold_bandwidth_int";
     field public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSRP_INT = "opportunistic_network_entry_threshold_rsrp_int";
     field public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSSNR_INT = "opportunistic_network_entry_threshold_rssnr_int";
     field public static final String KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSRP_INT = "opportunistic_network_exit_threshold_rsrp_int";
@@ -42873,6 +42884,7 @@
   public class SubscriptionInfo implements android.os.Parcelable {
     method public android.graphics.Bitmap createIconBitmap(android.content.Context);
     method public int describeContents();
+    method public int getCardId();
     method public int getCarrierId();
     method public CharSequence getCarrierName();
     method public String getCountryIso();
@@ -42989,6 +43001,7 @@
     method public android.telephony.TelephonyManager createForSubscriptionId(int);
     method @RequiresPermission(android.Manifest.permission.ACCESS_COARSE_LOCATION) public java.util.List<android.telephony.CellInfo> getAllCellInfo();
     method public int getCallState();
+    method public int getCardIdForDefaultEuicc();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) @WorkerThread public android.os.PersistableBundle getCarrierConfig();
     method public int getCarrierIdFromSimMccMnc();
     method @Deprecated @RequiresPermission(anyOf={android.Manifest.permission.ACCESS_COARSE_LOCATION, android.Manifest.permission.ACCESS_FINE_LOCATION}) public android.telephony.CellLocation getCellLocation();
@@ -43036,6 +43049,7 @@
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getSubscriberId();
     method public String getTypeAllocationCode();
     method public String getTypeAllocationCode(int);
+    method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public java.util.List<android.telephony.UiccCardInfo> getUiccCardsInfo();
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVisualVoicemailPackageName();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVoiceMailAlphaTag();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVoiceMailNumber();
@@ -43127,6 +43141,7 @@
     field public static final String EXTRA_STATE_RINGING;
     field public static final String EXTRA_SUBSCRIPTION_ID = "android.telephony.extra.SUBSCRIPTION_ID";
     field public static final String EXTRA_VOICEMAIL_NUMBER = "android.telephony.extra.VOICEMAIL_NUMBER";
+    field public static final int INVALID_CARD_ID = -1; // 0xffffffff
     field public static final String METADATA_HIDE_VOICEMAIL_SETTINGS_MENU = "android.telephony.HIDE_VOICEMAIL_SETTINGS_MENU";
     field public static final int NETWORK_TYPE_1xRTT = 7; // 0x7
     field public static final int NETWORK_TYPE_CDMA = 4; // 0x4
@@ -43194,6 +43209,18 @@
     method public void onResults(java.util.List<android.telephony.CellInfo>);
   }
 
+  public final class UiccCardInfo implements android.os.Parcelable {
+    ctor public UiccCardInfo(boolean, int, String, String, int);
+    method public int describeContents();
+    method public int getCardId();
+    method public String getEid();
+    method public String getIccId();
+    method public int getSlotIndex();
+    method public boolean isEuicc();
+    method public void writeToParcel(android.os.Parcel, int);
+    field public static final android.os.Parcelable.Creator<android.telephony.UiccCardInfo> CREATOR;
+  }
+
   public abstract class VisualVoicemailService extends android.app.Service {
     ctor public VisualVoicemailService();
     method public android.os.IBinder onBind(android.content.Intent);
@@ -43349,6 +43376,7 @@
     method public java.util.List<java.lang.Integer> getEmergencyNumberSources();
     method public java.util.List<java.lang.Integer> getEmergencyServiceCategories();
     method public int getEmergencyServiceCategoryBitmask();
+    method @NonNull public java.util.List<java.lang.String> getEmergencyUrns();
     method public String getMnc();
     method public String getNumber();
     method public boolean isFromSources(int);
@@ -55504,13 +55532,13 @@
     ctor public ByteArrayOutputStream(int);
     method public void reset();
     method public int size();
-    method public byte[] toByteArray();
+    method @NonNull public byte[] toByteArray();
     method @NonNull public String toString(@NonNull String) throws java.io.UnsupportedEncodingException;
     method @Deprecated @NonNull public String toString(int);
     method public void write(int);
-    method public void write(byte[], int, int);
+    method public void write(@NonNull byte[], int, int);
     method public void writeTo(@NonNull java.io.OutputStream) throws java.io.IOException;
-    field protected byte[] buf;
+    field @NonNull protected byte[] buf;
     field protected int count;
   }
 
@@ -55681,12 +55709,12 @@
     method public boolean isHidden();
     method public long lastModified();
     method public long length();
-    method public String[] list();
-    method public String[] list(@Nullable java.io.FilenameFilter);
-    method public java.io.File[] listFiles();
-    method public java.io.File[] listFiles(@Nullable java.io.FilenameFilter);
-    method public java.io.File[] listFiles(@Nullable java.io.FileFilter);
-    method public static java.io.File[] listRoots();
+    method @Nullable public String[] list();
+    method @Nullable public String[] list(@Nullable java.io.FilenameFilter);
+    method @Nullable public java.io.File[] listFiles();
+    method @Nullable public java.io.File[] listFiles(@Nullable java.io.FilenameFilter);
+    method @Nullable public java.io.File[] listFiles(@Nullable java.io.FileFilter);
+    method @NonNull public static java.io.File[] listRoots();
     method public boolean mkdir();
     method public boolean mkdirs();
     method public boolean renameTo(@NonNull java.io.File);
@@ -56175,8 +56203,8 @@
     method protected void clearError();
     method public void close();
     method public void flush();
-    method @NonNull public java.io.PrintWriter format(@NonNull String, java.lang.Object...);
-    method @NonNull public java.io.PrintWriter format(@Nullable java.util.Locale, @NonNull String, java.lang.Object...);
+    method @NonNull public java.io.PrintWriter format(@NonNull String, @NonNull java.lang.Object...);
+    method @NonNull public java.io.PrintWriter format(@Nullable java.util.Locale, @NonNull String, @NonNull java.lang.Object...);
     method public void print(boolean);
     method public void print(char);
     method public void print(int);
@@ -56186,8 +56214,8 @@
     method public void print(char[]);
     method public void print(@Nullable String);
     method public void print(@Nullable Object);
-    method @NonNull public java.io.PrintWriter printf(@NonNull String, java.lang.Object...);
-    method @NonNull public java.io.PrintWriter printf(@Nullable java.util.Locale, @NonNull String, java.lang.Object...);
+    method @NonNull public java.io.PrintWriter printf(@NonNull String, @NonNull java.lang.Object...);
+    method @NonNull public java.io.PrintWriter printf(@Nullable java.util.Locale, @NonNull String, @NonNull java.lang.Object...);
     method public void println();
     method public void println(boolean);
     method public void println(char);
@@ -57013,45 +57041,45 @@
     method @NonNull public static Class<?> forName(@NonNull String) throws java.lang.ClassNotFoundException;
     method @NonNull public static Class<?> forName(@NonNull String, boolean, @Nullable ClassLoader) throws java.lang.ClassNotFoundException;
     method @Nullable public <A extends java.lang.annotation.Annotation> A getAnnotation(@NonNull Class<A>);
-    method public java.lang.annotation.Annotation[] getAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getAnnotations();
     method @NonNull public <A extends java.lang.annotation.Annotation> A[] getAnnotationsByType(@NonNull Class<A>);
     method @Nullable public String getCanonicalName();
     method @Nullable public ClassLoader getClassLoader();
-    method public Class<?>[] getClasses();
+    method @NonNull public Class<?>[] getClasses();
     method @Nullable public Class<?> getComponentType();
-    method @NonNull public java.lang.reflect.Constructor<T> getConstructor(Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
-    method public java.lang.reflect.Constructor<?>[] getConstructors() throws java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Constructor<T> getConstructor(@Nullable Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Constructor<?>[] getConstructors() throws java.lang.SecurityException;
     method @Nullable public <A extends java.lang.annotation.Annotation> A getDeclaredAnnotation(@NonNull Class<A>);
-    method public java.lang.annotation.Annotation[] getDeclaredAnnotations();
-    method public Class<?>[] getDeclaredClasses();
-    method @NonNull public java.lang.reflect.Constructor<T> getDeclaredConstructor(Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
-    method public java.lang.reflect.Constructor<?>[] getDeclaredConstructors() throws java.lang.SecurityException;
+    method @NonNull public java.lang.annotation.Annotation[] getDeclaredAnnotations();
+    method @NonNull public Class<?>[] getDeclaredClasses();
+    method @NonNull public java.lang.reflect.Constructor<T> getDeclaredConstructor(@Nullable Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Constructor<?>[] getDeclaredConstructors() throws java.lang.SecurityException;
     method @NonNull public java.lang.reflect.Field getDeclaredField(@NonNull String) throws java.lang.NoSuchFieldException;
-    method public java.lang.reflect.Field[] getDeclaredFields();
-    method @NonNull public java.lang.reflect.Method getDeclaredMethod(@NonNull String, Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
-    method public java.lang.reflect.Method[] getDeclaredMethods() throws java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Field[] getDeclaredFields();
+    method @NonNull public java.lang.reflect.Method getDeclaredMethod(@NonNull String, @Nullable Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Method[] getDeclaredMethods() throws java.lang.SecurityException;
     method @Nullable public Class<?> getDeclaringClass();
     method @Nullable public Class<?> getEnclosingClass();
     method @Nullable public java.lang.reflect.Constructor<?> getEnclosingConstructor();
     method @Nullable public java.lang.reflect.Method getEnclosingMethod();
-    method public T[] getEnumConstants();
+    method @Nullable public T[] getEnumConstants();
     method @NonNull public java.lang.reflect.Field getField(@NonNull String) throws java.lang.NoSuchFieldException;
-    method public java.lang.reflect.Field[] getFields() throws java.lang.SecurityException;
-    method public java.lang.reflect.Type[] getGenericInterfaces();
+    method @NonNull public java.lang.reflect.Field[] getFields() throws java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Type[] getGenericInterfaces();
     method @Nullable public java.lang.reflect.Type getGenericSuperclass();
-    method public Class<?>[] getInterfaces();
-    method @NonNull public java.lang.reflect.Method getMethod(@NonNull String, Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
-    method public java.lang.reflect.Method[] getMethods() throws java.lang.SecurityException;
+    method @NonNull public Class<?>[] getInterfaces();
+    method @NonNull public java.lang.reflect.Method getMethod(@NonNull String, @Nullable Class<?>...) throws java.lang.NoSuchMethodException, java.lang.SecurityException;
+    method @NonNull public java.lang.reflect.Method[] getMethods() throws java.lang.SecurityException;
     method public int getModifiers();
     method @NonNull public String getName();
     method @Nullable public Package getPackage();
     method @Nullable public java.security.ProtectionDomain getProtectionDomain();
     method @Nullable public java.net.URL getResource(@NonNull String);
     method @Nullable public java.io.InputStream getResourceAsStream(@NonNull String);
-    method public Object[] getSigners();
+    method @Nullable public Object[] getSigners();
     method @NonNull public String getSimpleName();
     method @Nullable public Class<? super T> getSuperclass();
-    method public java.lang.reflect.TypeVariable<java.lang.Class<T>>[] getTypeParameters();
+    method @NonNull public java.lang.reflect.TypeVariable<java.lang.Class<T>>[] getTypeParameters();
     method public boolean isAnnotation();
     method public boolean isAnonymousClass();
     method public boolean isArray();
@@ -57938,8 +57966,8 @@
     method @NonNull public static String copyValueOf(char[]);
     method public boolean endsWith(@NonNull String);
     method public boolean equalsIgnoreCase(@Nullable String);
-    method @NonNull public static String format(@NonNull String, java.lang.Object...);
-    method @NonNull public static String format(@NonNull java.util.Locale, @NonNull String, java.lang.Object...);
+    method @NonNull public static String format(@NonNull String, @NonNull java.lang.Object...);
+    method @NonNull public static String format(@NonNull java.util.Locale, @NonNull String, @NonNull java.lang.Object...);
     method @Deprecated public void getBytes(int, int, byte[], int);
     method public byte[] getBytes(@NonNull String) throws java.io.UnsupportedEncodingException;
     method public byte[] getBytes(@NonNull java.nio.charset.Charset);
@@ -57951,7 +57979,7 @@
     method public int indexOf(@NonNull String, int);
     method @NonNull public String intern();
     method public boolean isEmpty();
-    method @NonNull public static String join(@NonNull CharSequence, java.lang.CharSequence...);
+    method @NonNull public static String join(@NonNull CharSequence, @Nullable java.lang.CharSequence...);
     method @NonNull public static String join(@NonNull CharSequence, @NonNull Iterable<? extends java.lang.CharSequence>);
     method public int lastIndexOf(int);
     method public int lastIndexOf(int, int);
@@ -57966,8 +57994,8 @@
     method @NonNull public String replace(@NonNull CharSequence, @NonNull CharSequence);
     method @NonNull public String replaceAll(@NonNull String, @NonNull String);
     method @NonNull public String replaceFirst(@NonNull String, @NonNull String);
-    method public String[] split(@NonNull String, int);
-    method public String[] split(@NonNull String);
+    method @NonNull public String[] split(@NonNull String, int);
+    method @NonNull public String[] split(@NonNull String);
     method public boolean startsWith(@NonNull String, int);
     method public boolean startsWith(@NonNull String);
     method @NonNull public CharSequence subSequence(int, int);
@@ -58168,7 +58196,7 @@
     method public long getId();
     method @NonNull public final String getName();
     method public final int getPriority();
-    method public StackTraceElement[] getStackTrace();
+    method @NonNull public StackTraceElement[] getStackTrace();
     method @NonNull public java.lang.Thread.State getState();
     method @Nullable public final ThreadGroup getThreadGroup();
     method @Nullable public java.lang.Thread.UncaughtExceptionHandler getUncaughtExceptionHandler();
@@ -58266,13 +58294,13 @@
     method @Nullable public Throwable getCause();
     method @Nullable public String getLocalizedMessage();
     method @Nullable public String getMessage();
-    method public StackTraceElement[] getStackTrace();
-    method public final Throwable[] getSuppressed();
+    method @NonNull public StackTraceElement[] getStackTrace();
+    method @NonNull public final Throwable[] getSuppressed();
     method @NonNull public Throwable initCause(@Nullable Throwable);
     method public void printStackTrace();
     method public void printStackTrace(@NonNull java.io.PrintStream);
     method public void printStackTrace(@NonNull java.io.PrintWriter);
-    method public void setStackTrace(StackTraceElement[]);
+    method public void setStackTrace(@NonNull StackTraceElement[]);
   }
 
   public class TypeNotPresentException extends java.lang.RuntimeException {
@@ -58595,8 +58623,8 @@
   public class AccessibleObject implements java.lang.reflect.AnnotatedElement {
     ctor protected AccessibleObject();
     method @Nullable public <T extends java.lang.annotation.Annotation> T getAnnotation(@NonNull Class<T>);
-    method public java.lang.annotation.Annotation[] getAnnotations();
-    method public java.lang.annotation.Annotation[] getDeclaredAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getDeclaredAnnotations();
     method public boolean isAccessible();
     method public static void setAccessible(java.lang.reflect.AccessibleObject[], boolean) throws java.lang.SecurityException;
     method public void setAccessible(boolean) throws java.lang.SecurityException;
@@ -58604,10 +58632,10 @@
 
   public interface AnnotatedElement {
     method @Nullable public <T extends java.lang.annotation.Annotation> T getAnnotation(@NonNull Class<T>);
-    method public java.lang.annotation.Annotation[] getAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getAnnotations();
     method public default <T extends java.lang.annotation.Annotation> T[] getAnnotationsByType(@NonNull Class<T>);
     method @Nullable public default <T extends java.lang.annotation.Annotation> T getDeclaredAnnotation(@NonNull Class<T>);
-    method public java.lang.annotation.Annotation[] getDeclaredAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getDeclaredAnnotations();
     method public default <T extends java.lang.annotation.Annotation> T[] getDeclaredAnnotationsByType(@NonNull Class<T>);
     method public default boolean isAnnotationPresent(@NonNull Class<? extends java.lang.annotation.Annotation>);
   }
@@ -58642,20 +58670,20 @@
     method public int getModifiers();
     method @NonNull public String getName();
     method public java.lang.annotation.Annotation[][] getParameterAnnotations();
-    method public Class<?>[] getParameterTypes();
+    method @NonNull public Class<?>[] getParameterTypes();
     method public java.lang.reflect.TypeVariable<java.lang.reflect.Constructor<T>>[] getTypeParameters();
     method @NonNull public T newInstance(java.lang.Object...) throws java.lang.IllegalAccessException, java.lang.IllegalArgumentException, java.lang.InstantiationException, java.lang.reflect.InvocationTargetException;
     method @NonNull public String toGenericString();
   }
 
   public abstract class Executable extends java.lang.reflect.AccessibleObject implements java.lang.reflect.GenericDeclaration java.lang.reflect.Member {
-    method public abstract Class<?>[] getExceptionTypes();
-    method public java.lang.reflect.Type[] getGenericExceptionTypes();
-    method public java.lang.reflect.Type[] getGenericParameterTypes();
-    method public abstract java.lang.annotation.Annotation[][] getParameterAnnotations();
+    method @NonNull public abstract Class<?>[] getExceptionTypes();
+    method @NonNull public java.lang.reflect.Type[] getGenericExceptionTypes();
+    method @NonNull public java.lang.reflect.Type[] getGenericParameterTypes();
+    method @NonNull public abstract java.lang.annotation.Annotation[][] getParameterAnnotations();
     method public int getParameterCount();
-    method public abstract Class<?>[] getParameterTypes();
-    method public java.lang.reflect.Parameter[] getParameters();
+    method @NonNull public abstract Class<?>[] getParameterTypes();
+    method @NonNull public java.lang.reflect.Parameter[] getParameters();
     method public final boolean isAnnotationPresent(@NonNull Class<? extends java.lang.annotation.Annotation>);
     method public boolean isSynthetic();
     method public boolean isVarArgs();
@@ -58744,7 +58772,7 @@
     method @NonNull public Class<?>[] getParameterTypes();
     method @NonNull public Class<?> getReturnType();
     method @NonNull public java.lang.reflect.TypeVariable<java.lang.reflect.Method>[] getTypeParameters();
-    method @Nullable public Object invoke(@Nullable Object, java.lang.Object...) throws java.lang.IllegalAccessException, java.lang.IllegalArgumentException, java.lang.reflect.InvocationTargetException;
+    method @Nullable public Object invoke(@Nullable Object, @Nullable java.lang.Object...) throws java.lang.IllegalAccessException, java.lang.IllegalArgumentException, java.lang.reflect.InvocationTargetException;
     method public boolean isBridge();
     method public boolean isDefault();
     method @NonNull public String toGenericString();
@@ -58787,8 +58815,8 @@
 
   public final class Parameter implements java.lang.reflect.AnnotatedElement {
     method @Nullable public <T extends java.lang.annotation.Annotation> T getAnnotation(@NonNull Class<T>);
-    method public java.lang.annotation.Annotation[] getAnnotations();
-    method public java.lang.annotation.Annotation[] getDeclaredAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getAnnotations();
+    method @NonNull public java.lang.annotation.Annotation[] getDeclaredAnnotations();
     method @NonNull public java.lang.reflect.Executable getDeclaringExecutable();
     method public int getModifiers();
     method @NonNull public String getName();
@@ -58801,7 +58829,7 @@
   }
 
   public interface ParameterizedType extends java.lang.reflect.Type {
-    method public java.lang.reflect.Type[] getActualTypeArguments();
+    method @NonNull public java.lang.reflect.Type[] getActualTypeArguments();
     method @Nullable public java.lang.reflect.Type getOwnerType();
     method @NonNull public java.lang.reflect.Type getRawType();
   }
@@ -58809,9 +58837,9 @@
   public class Proxy implements java.io.Serializable {
     ctor protected Proxy(@NonNull java.lang.reflect.InvocationHandler);
     method @NonNull public static java.lang.reflect.InvocationHandler getInvocationHandler(@NonNull Object) throws java.lang.IllegalArgumentException;
-    method @NonNull public static Class<?> getProxyClass(@Nullable ClassLoader, Class<?>...) throws java.lang.IllegalArgumentException;
+    method @NonNull public static Class<?> getProxyClass(@Nullable ClassLoader, @NonNull Class<?>...) throws java.lang.IllegalArgumentException;
     method public static boolean isProxyClass(@NonNull Class<?>);
-    method @NonNull public static Object newProxyInstance(@Nullable ClassLoader, Class<?>[], @NonNull java.lang.reflect.InvocationHandler) throws java.lang.IllegalArgumentException;
+    method @NonNull public static Object newProxyInstance(@Nullable ClassLoader, @NonNull Class<?>[], @NonNull java.lang.reflect.InvocationHandler) throws java.lang.IllegalArgumentException;
     field protected java.lang.reflect.InvocationHandler h;
   }
 
@@ -58825,7 +58853,7 @@
   }
 
   public interface TypeVariable<D extends java.lang.reflect.GenericDeclaration> extends java.lang.reflect.Type {
-    method public java.lang.reflect.Type[] getBounds();
+    method @NonNull public java.lang.reflect.Type[] getBounds();
     method @NonNull public D getGenericDeclaration();
     method @NonNull public String getName();
   }
@@ -58837,8 +58865,8 @@
   }
 
   public interface WildcardType extends java.lang.reflect.Type {
-    method public java.lang.reflect.Type[] getLowerBounds();
-    method public java.lang.reflect.Type[] getUpperBounds();
+    method @NonNull public java.lang.reflect.Type[] getLowerBounds();
+    method @NonNull public java.lang.reflect.Type[] getUpperBounds();
   }
 
 }
@@ -59855,20 +59883,20 @@
     method public abstract Object array();
     method public abstract int arrayOffset();
     method public final int capacity();
-    method public final java.nio.Buffer clear();
-    method public final java.nio.Buffer flip();
+    method public java.nio.Buffer clear();
+    method public java.nio.Buffer flip();
     method public abstract boolean hasArray();
     method public final boolean hasRemaining();
     method public abstract boolean isDirect();
     method public abstract boolean isReadOnly();
     method public final int limit();
-    method public final java.nio.Buffer limit(int);
-    method public final java.nio.Buffer mark();
+    method public java.nio.Buffer limit(int);
+    method public java.nio.Buffer mark();
     method public final int position();
-    method public final java.nio.Buffer position(int);
+    method public java.nio.Buffer position(int);
     method public final int remaining();
-    method public final java.nio.Buffer reset();
-    method public final java.nio.Buffer rewind();
+    method public java.nio.Buffer reset();
+    method public java.nio.Buffer rewind();
   }
 
   public class BufferOverflowException extends java.lang.RuntimeException {
@@ -59882,7 +59910,7 @@
   public abstract class ByteBuffer extends java.nio.Buffer implements java.lang.Comparable<java.nio.ByteBuffer> {
     method @NonNull public static java.nio.ByteBuffer allocate(int);
     method @NonNull public static java.nio.ByteBuffer allocateDirect(int);
-    method public final byte[] array();
+    method @NonNull public final byte[] array();
     method public final int arrayOffset();
     method @NonNull public abstract java.nio.CharBuffer asCharBuffer();
     method @NonNull public abstract java.nio.DoubleBuffer asDoubleBuffer();
@@ -59896,8 +59924,8 @@
     method @NonNull public abstract java.nio.ByteBuffer duplicate();
     method public abstract byte get();
     method public abstract byte get(int);
-    method @NonNull public java.nio.ByteBuffer get(byte[], int, int);
-    method @NonNull public java.nio.ByteBuffer get(byte[]);
+    method @NonNull public java.nio.ByteBuffer get(@NonNull byte[], int, int);
+    method @NonNull public java.nio.ByteBuffer get(@NonNull byte[]);
     method public abstract char getChar();
     method public abstract char getChar(int);
     method public abstract double getDouble();
@@ -59916,8 +59944,8 @@
     method @NonNull public abstract java.nio.ByteBuffer put(byte);
     method @NonNull public abstract java.nio.ByteBuffer put(int, byte);
     method @NonNull public java.nio.ByteBuffer put(@NonNull java.nio.ByteBuffer);
-    method @NonNull public java.nio.ByteBuffer put(byte[], int, int);
-    method @NonNull public final java.nio.ByteBuffer put(byte[]);
+    method @NonNull public java.nio.ByteBuffer put(@NonNull byte[], int, int);
+    method @NonNull public final java.nio.ByteBuffer put(@NonNull byte[]);
     method @NonNull public abstract java.nio.ByteBuffer putChar(char);
     method @NonNull public abstract java.nio.ByteBuffer putChar(int, char);
     method @NonNull public abstract java.nio.ByteBuffer putDouble(double);
@@ -59931,8 +59959,8 @@
     method @NonNull public abstract java.nio.ByteBuffer putShort(short);
     method @NonNull public abstract java.nio.ByteBuffer putShort(int, short);
     method @NonNull public abstract java.nio.ByteBuffer slice();
-    method @NonNull public static java.nio.ByteBuffer wrap(byte[], int, int);
-    method @NonNull public static java.nio.ByteBuffer wrap(byte[]);
+    method @NonNull public static java.nio.ByteBuffer wrap(@NonNull byte[], int, int);
+    method @NonNull public static java.nio.ByteBuffer wrap(@NonNull byte[]);
   }
 
   public final class ByteOrder {
@@ -61765,20 +61793,20 @@
 
   public abstract class MessageDigest extends java.security.MessageDigestSpi {
     ctor protected MessageDigest(@NonNull String);
-    method public byte[] digest();
-    method public int digest(byte[], int, int) throws java.security.DigestException;
-    method public byte[] digest(byte[]);
+    method @NonNull public byte[] digest();
+    method public int digest(@NonNull byte[], int, int) throws java.security.DigestException;
+    method @NonNull public byte[] digest(@NonNull byte[]);
     method @NonNull public final String getAlgorithm();
     method public final int getDigestLength();
     method @NonNull public static java.security.MessageDigest getInstance(@NonNull String) throws java.security.NoSuchAlgorithmException;
     method @NonNull public static java.security.MessageDigest getInstance(@NonNull String, @NonNull String) throws java.security.NoSuchAlgorithmException, java.security.NoSuchProviderException;
     method @NonNull public static java.security.MessageDigest getInstance(@NonNull String, @NonNull java.security.Provider) throws java.security.NoSuchAlgorithmException;
     method @NonNull public final java.security.Provider getProvider();
-    method public static boolean isEqual(byte[], byte[]);
+    method public static boolean isEqual(@Nullable byte[], @Nullable byte[]);
     method public void reset();
     method public void update(byte);
-    method public void update(byte[], int, int);
-    method public void update(byte[]);
+    method public void update(@NonNull byte[], int, int);
+    method public void update(@NonNull byte[]);
     method public final void update(@NonNull java.nio.ByteBuffer);
   }
 
@@ -64385,7 +64413,7 @@
     method @NonNull public final StringBuffer format(@NonNull Object, @NonNull StringBuffer, @NonNull java.text.FieldPosition);
     method @NonNull public abstract StringBuffer format(@NonNull java.util.Date, @NonNull StringBuffer, @NonNull java.text.FieldPosition);
     method @NonNull public final String format(@NonNull java.util.Date);
-    method public static java.util.Locale[] getAvailableLocales();
+    method @NonNull public static java.util.Locale[] getAvailableLocales();
     method @NonNull public java.util.Calendar getCalendar();
     method @NonNull public static final java.text.DateFormat getDateInstance();
     method @NonNull public static final java.text.DateFormat getDateInstance(int);
@@ -64625,7 +64653,7 @@
     method @NonNull public final String format(long);
     method @NonNull public abstract StringBuffer format(double, @NonNull StringBuffer, @NonNull java.text.FieldPosition);
     method @NonNull public abstract StringBuffer format(long, @NonNull StringBuffer, @NonNull java.text.FieldPosition);
-    method public static java.util.Locale[] getAvailableLocales();
+    method @NonNull public static java.util.Locale[] getAvailableLocales();
     method @Nullable public java.util.Currency getCurrency();
     method @NonNull public static final java.text.NumberFormat getCurrencyInstance();
     method @NonNull public static java.text.NumberFormat getCurrencyInstance(@NonNull java.util.Locale);
@@ -66279,8 +66307,8 @@
     method public boolean remove(@Nullable Object);
     method public boolean removeAll(@NonNull java.util.Collection<?>);
     method public boolean retainAll(@NonNull java.util.Collection<?>);
-    method public Object[] toArray();
-    method public <T> T[] toArray(T[]);
+    method @NonNull public Object[] toArray();
+    method @NonNull public <T> T[] toArray(@NonNull T[]);
   }
 
   public abstract class AbstractList<E> extends java.util.AbstractCollection<E> implements java.util.List<E> {
@@ -66389,161 +66417,161 @@
   }
 
   public class Arrays {
-    method @NonNull @java.lang.SafeVarargs public static <T> java.util.List<T> asList(T...);
-    method public static int binarySearch(long[], long);
-    method public static int binarySearch(long[], int, int, long);
-    method public static int binarySearch(int[], int);
-    method public static int binarySearch(int[], int, int, int);
-    method public static int binarySearch(short[], short);
-    method public static int binarySearch(short[], int, int, short);
-    method public static int binarySearch(char[], char);
-    method public static int binarySearch(char[], int, int, char);
-    method public static int binarySearch(byte[], byte);
-    method public static int binarySearch(byte[], int, int, byte);
-    method public static int binarySearch(double[], double);
-    method public static int binarySearch(double[], int, int, double);
-    method public static int binarySearch(float[], float);
-    method public static int binarySearch(float[], int, int, float);
-    method public static int binarySearch(Object[], @NonNull Object);
-    method public static int binarySearch(Object[], int, int, @NonNull Object);
-    method public static <T> int binarySearch(T[], T, @Nullable java.util.Comparator<? super T>);
-    method public static <T> int binarySearch(T[], int, int, T, @Nullable java.util.Comparator<? super T>);
-    method public static <T> T[] copyOf(T[], int);
-    method public static <T, U> T[] copyOf(U[], int, @NonNull Class<? extends T[]>);
-    method public static byte[] copyOf(byte[], int);
-    method public static short[] copyOf(short[], int);
-    method public static int[] copyOf(int[], int);
-    method public static long[] copyOf(long[], int);
-    method public static char[] copyOf(char[], int);
-    method public static float[] copyOf(float[], int);
-    method public static double[] copyOf(double[], int);
-    method public static boolean[] copyOf(boolean[], int);
-    method public static <T> T[] copyOfRange(T[], int, int);
-    method public static <T, U> T[] copyOfRange(U[], int, int, @NonNull Class<? extends T[]>);
-    method public static byte[] copyOfRange(byte[], int, int);
-    method public static short[] copyOfRange(short[], int, int);
-    method public static int[] copyOfRange(int[], int, int);
-    method public static long[] copyOfRange(long[], int, int);
-    method public static char[] copyOfRange(char[], int, int);
-    method public static float[] copyOfRange(float[], int, int);
-    method public static double[] copyOfRange(double[], int, int);
-    method public static boolean[] copyOfRange(boolean[], int, int);
-    method public static boolean deepEquals(Object[], Object[]);
-    method public static int deepHashCode(Object[]);
-    method @NonNull public static String deepToString(Object[]);
-    method public static boolean equals(long[], long[]);
-    method public static boolean equals(int[], int[]);
-    method public static boolean equals(short[], short[]);
-    method public static boolean equals(char[], char[]);
-    method public static boolean equals(byte[], byte[]);
-    method public static boolean equals(boolean[], boolean[]);
-    method public static boolean equals(double[], double[]);
-    method public static boolean equals(float[], float[]);
-    method public static boolean equals(Object[], Object[]);
-    method public static void fill(long[], long);
-    method public static void fill(long[], int, int, long);
-    method public static void fill(int[], int);
-    method public static void fill(int[], int, int, int);
-    method public static void fill(short[], short);
-    method public static void fill(short[], int, int, short);
-    method public static void fill(char[], char);
-    method public static void fill(char[], int, int, char);
-    method public static void fill(byte[], byte);
-    method public static void fill(byte[], int, int, byte);
-    method public static void fill(boolean[], boolean);
-    method public static void fill(boolean[], int, int, boolean);
-    method public static void fill(double[], double);
-    method public static void fill(double[], int, int, double);
-    method public static void fill(float[], float);
-    method public static void fill(float[], int, int, float);
-    method public static void fill(Object[], @Nullable Object);
-    method public static void fill(Object[], int, int, @Nullable Object);
-    method public static int hashCode(long[]);
-    method public static int hashCode(int[]);
-    method public static int hashCode(short[]);
-    method public static int hashCode(char[]);
-    method public static int hashCode(byte[]);
-    method public static int hashCode(boolean[]);
-    method public static int hashCode(float[]);
-    method public static int hashCode(double[]);
-    method public static int hashCode(Object[]);
-    method public static <T> void parallelPrefix(T[], @NonNull java.util.function.BinaryOperator<T>);
-    method public static <T> void parallelPrefix(T[], int, int, @NonNull java.util.function.BinaryOperator<T>);
-    method public static void parallelPrefix(long[], @NonNull java.util.function.LongBinaryOperator);
-    method public static void parallelPrefix(long[], int, int, @NonNull java.util.function.LongBinaryOperator);
-    method public static void parallelPrefix(double[], @NonNull java.util.function.DoubleBinaryOperator);
-    method public static void parallelPrefix(double[], int, int, @NonNull java.util.function.DoubleBinaryOperator);
-    method public static void parallelPrefix(int[], @NonNull java.util.function.IntBinaryOperator);
-    method public static void parallelPrefix(int[], int, int, @NonNull java.util.function.IntBinaryOperator);
-    method public static <T> void parallelSetAll(T[], @NonNull java.util.function.IntFunction<? extends T>);
-    method public static void parallelSetAll(int[], @NonNull java.util.function.IntUnaryOperator);
-    method public static void parallelSetAll(long[], @NonNull java.util.function.IntToLongFunction);
-    method public static void parallelSetAll(double[], @NonNull java.util.function.IntToDoubleFunction);
-    method public static void parallelSort(byte[]);
-    method public static void parallelSort(byte[], int, int);
-    method public static void parallelSort(char[]);
-    method public static void parallelSort(char[], int, int);
-    method public static void parallelSort(short[]);
-    method public static void parallelSort(short[], int, int);
-    method public static void parallelSort(int[]);
-    method public static void parallelSort(int[], int, int);
-    method public static void parallelSort(long[]);
-    method public static void parallelSort(long[], int, int);
-    method public static void parallelSort(float[]);
-    method public static void parallelSort(float[], int, int);
-    method public static void parallelSort(double[]);
-    method public static void parallelSort(double[], int, int);
-    method public static <T extends java.lang.Comparable<? super T>> void parallelSort(T[]);
-    method public static <T extends java.lang.Comparable<? super T>> void parallelSort(T[], int, int);
-    method public static <T> void parallelSort(T[], @Nullable java.util.Comparator<? super T>);
-    method public static <T> void parallelSort(T[], int, int, @Nullable java.util.Comparator<? super T>);
-    method public static <T> void setAll(T[], @NonNull java.util.function.IntFunction<? extends T>);
-    method public static void setAll(int[], @NonNull java.util.function.IntUnaryOperator);
-    method public static void setAll(long[], @NonNull java.util.function.IntToLongFunction);
-    method public static void setAll(double[], @NonNull java.util.function.IntToDoubleFunction);
-    method public static void sort(int[]);
-    method public static void sort(int[], int, int);
-    method public static void sort(long[]);
-    method public static void sort(long[], int, int);
-    method public static void sort(short[]);
-    method public static void sort(short[], int, int);
-    method public static void sort(char[]);
-    method public static void sort(char[], int, int);
-    method public static void sort(byte[]);
-    method public static void sort(byte[], int, int);
-    method public static void sort(float[]);
-    method public static void sort(float[], int, int);
-    method public static void sort(double[]);
-    method public static void sort(double[], int, int);
-    method public static void sort(Object[]);
-    method public static void sort(Object[], int, int);
-    method public static <T> void sort(T[], @Nullable java.util.Comparator<? super T>);
-    method public static <T> void sort(T[], int, int, @Nullable java.util.Comparator<? super T>);
-    method @NonNull public static <T> java.util.Spliterator<T> spliterator(T[]);
-    method @NonNull public static <T> java.util.Spliterator<T> spliterator(T[], int, int);
-    method @NonNull public static java.util.Spliterator.OfInt spliterator(int[]);
-    method @NonNull public static java.util.Spliterator.OfInt spliterator(int[], int, int);
-    method @NonNull public static java.util.Spliterator.OfLong spliterator(long[]);
-    method @NonNull public static java.util.Spliterator.OfLong spliterator(long[], int, int);
-    method @NonNull public static java.util.Spliterator.OfDouble spliterator(double[]);
-    method @NonNull public static java.util.Spliterator.OfDouble spliterator(double[], int, int);
-    method @NonNull public static <T> java.util.stream.Stream<T> stream(T[]);
-    method @NonNull public static <T> java.util.stream.Stream<T> stream(T[], int, int);
-    method @NonNull public static java.util.stream.IntStream stream(int[]);
-    method @NonNull public static java.util.stream.IntStream stream(int[], int, int);
-    method @NonNull public static java.util.stream.LongStream stream(long[]);
-    method @NonNull public static java.util.stream.LongStream stream(long[], int, int);
-    method @NonNull public static java.util.stream.DoubleStream stream(double[]);
-    method @NonNull public static java.util.stream.DoubleStream stream(double[], int, int);
-    method @NonNull public static String toString(long[]);
-    method @NonNull public static String toString(int[]);
-    method @NonNull public static String toString(short[]);
-    method @NonNull public static String toString(char[]);
-    method @NonNull public static String toString(byte[]);
-    method @NonNull public static String toString(boolean[]);
-    method @NonNull public static String toString(float[]);
-    method @NonNull public static String toString(double[]);
-    method @NonNull public static String toString(Object[]);
+    method @NonNull @java.lang.SafeVarargs public static <T> java.util.List<T> asList(@NonNull T...);
+    method public static int binarySearch(@NonNull long[], long);
+    method public static int binarySearch(@NonNull long[], int, int, long);
+    method public static int binarySearch(@NonNull int[], int);
+    method public static int binarySearch(@NonNull int[], int, int, int);
+    method public static int binarySearch(@NonNull short[], short);
+    method public static int binarySearch(@NonNull short[], int, int, short);
+    method public static int binarySearch(@NonNull char[], char);
+    method public static int binarySearch(@NonNull char[], int, int, char);
+    method public static int binarySearch(@NonNull byte[], byte);
+    method public static int binarySearch(@NonNull byte[], int, int, byte);
+    method public static int binarySearch(@NonNull double[], double);
+    method public static int binarySearch(@NonNull double[], int, int, double);
+    method public static int binarySearch(@NonNull float[], float);
+    method public static int binarySearch(@NonNull float[], int, int, float);
+    method public static int binarySearch(@NonNull Object[], @NonNull Object);
+    method public static int binarySearch(@NonNull Object[], int, int, @NonNull Object);
+    method public static <T> int binarySearch(@NonNull T[], T, @Nullable java.util.Comparator<? super T>);
+    method public static <T> int binarySearch(@NonNull T[], int, int, T, @Nullable java.util.Comparator<? super T>);
+    method @NonNull public static <T> T[] copyOf(@NonNull T[], int);
+    method @NonNull public static <T, U> T[] copyOf(@NonNull U[], int, @NonNull Class<? extends T[]>);
+    method @NonNull public static byte[] copyOf(@NonNull byte[], int);
+    method @NonNull public static short[] copyOf(@NonNull short[], int);
+    method @NonNull public static int[] copyOf(@NonNull int[], int);
+    method @NonNull public static long[] copyOf(@NonNull long[], int);
+    method @NonNull public static char[] copyOf(@NonNull char[], int);
+    method @NonNull public static float[] copyOf(@NonNull float[], int);
+    method @NonNull public static double[] copyOf(@NonNull double[], int);
+    method @NonNull public static boolean[] copyOf(@NonNull boolean[], int);
+    method @NonNull public static <T> T[] copyOfRange(@NonNull T[], int, int);
+    method @NonNull public static <T, U> T[] copyOfRange(@NonNull U[], int, int, @NonNull Class<? extends T[]>);
+    method @NonNull public static byte[] copyOfRange(@NonNull byte[], int, int);
+    method @NonNull public static short[] copyOfRange(@NonNull short[], int, int);
+    method @NonNull public static int[] copyOfRange(@NonNull int[], int, int);
+    method @NonNull public static long[] copyOfRange(@NonNull long[], int, int);
+    method @NonNull public static char[] copyOfRange(@NonNull char[], int, int);
+    method @NonNull public static float[] copyOfRange(@NonNull float[], int, int);
+    method @NonNull public static double[] copyOfRange(@NonNull double[], int, int);
+    method @NonNull public static boolean[] copyOfRange(@NonNull boolean[], int, int);
+    method public static boolean deepEquals(@Nullable Object[], @Nullable Object[]);
+    method public static int deepHashCode(@Nullable Object[]);
+    method @NonNull public static String deepToString(@Nullable Object[]);
+    method public static boolean equals(@Nullable long[], @Nullable long[]);
+    method public static boolean equals(@Nullable int[], @Nullable int[]);
+    method public static boolean equals(@Nullable short[], @Nullable short[]);
+    method public static boolean equals(@Nullable char[], @Nullable char[]);
+    method public static boolean equals(@Nullable byte[], @Nullable byte[]);
+    method public static boolean equals(@Nullable boolean[], @Nullable boolean[]);
+    method public static boolean equals(@Nullable double[], @Nullable double[]);
+    method public static boolean equals(@Nullable float[], @Nullable float[]);
+    method public static boolean equals(@Nullable Object[], @Nullable Object[]);
+    method public static void fill(@NonNull long[], long);
+    method public static void fill(@NonNull long[], int, int, long);
+    method public static void fill(@NonNull int[], int);
+    method public static void fill(@NonNull int[], int, int, int);
+    method public static void fill(@NonNull short[], short);
+    method public static void fill(@NonNull short[], int, int, short);
+    method public static void fill(@NonNull char[], char);
+    method public static void fill(@NonNull char[], int, int, char);
+    method public static void fill(@NonNull byte[], byte);
+    method public static void fill(@NonNull byte[], int, int, byte);
+    method public static void fill(@NonNull boolean[], boolean);
+    method public static void fill(@NonNull boolean[], int, int, boolean);
+    method public static void fill(@NonNull double[], double);
+    method public static void fill(@NonNull double[], int, int, double);
+    method public static void fill(@NonNull float[], float);
+    method public static void fill(@NonNull float[], int, int, float);
+    method public static void fill(@NonNull Object[], @Nullable Object);
+    method public static void fill(@NonNull Object[], int, int, @Nullable Object);
+    method public static int hashCode(@Nullable long[]);
+    method public static int hashCode(@Nullable int[]);
+    method public static int hashCode(@Nullable short[]);
+    method public static int hashCode(@Nullable char[]);
+    method public static int hashCode(@Nullable byte[]);
+    method public static int hashCode(@Nullable boolean[]);
+    method public static int hashCode(@Nullable float[]);
+    method public static int hashCode(@Nullable double[]);
+    method public static int hashCode(@Nullable Object[]);
+    method public static <T> void parallelPrefix(@NonNull T[], @NonNull java.util.function.BinaryOperator<T>);
+    method public static <T> void parallelPrefix(@NonNull T[], int, int, @NonNull java.util.function.BinaryOperator<T>);
+    method public static void parallelPrefix(@NonNull long[], @NonNull java.util.function.LongBinaryOperator);
+    method public static void parallelPrefix(@NonNull long[], int, int, @NonNull java.util.function.LongBinaryOperator);
+    method public static void parallelPrefix(@NonNull double[], @NonNull java.util.function.DoubleBinaryOperator);
+    method public static void parallelPrefix(@NonNull double[], int, int, @NonNull java.util.function.DoubleBinaryOperator);
+    method public static void parallelPrefix(@NonNull int[], @NonNull java.util.function.IntBinaryOperator);
+    method public static void parallelPrefix(@NonNull int[], int, int, @NonNull java.util.function.IntBinaryOperator);
+    method public static <T> void parallelSetAll(@NonNull T[], @NonNull java.util.function.IntFunction<? extends T>);
+    method public static void parallelSetAll(@NonNull int[], @NonNull java.util.function.IntUnaryOperator);
+    method public static void parallelSetAll(@NonNull long[], @NonNull java.util.function.IntToLongFunction);
+    method public static void parallelSetAll(@NonNull double[], @NonNull java.util.function.IntToDoubleFunction);
+    method public static void parallelSort(@NonNull byte[]);
+    method public static void parallelSort(@NonNull byte[], int, int);
+    method public static void parallelSort(@NonNull char[]);
+    method public static void parallelSort(@NonNull char[], int, int);
+    method public static void parallelSort(@NonNull short[]);
+    method public static void parallelSort(@NonNull short[], int, int);
+    method public static void parallelSort(@NonNull int[]);
+    method public static void parallelSort(@NonNull int[], int, int);
+    method public static void parallelSort(@NonNull long[]);
+    method public static void parallelSort(@NonNull long[], int, int);
+    method public static void parallelSort(@NonNull float[]);
+    method public static void parallelSort(@NonNull float[], int, int);
+    method public static void parallelSort(@NonNull double[]);
+    method public static void parallelSort(@NonNull double[], int, int);
+    method public static <T extends java.lang.Comparable<? super T>> void parallelSort(@NonNull T[]);
+    method public static <T extends java.lang.Comparable<? super T>> void parallelSort(@NonNull T[], int, int);
+    method public static <T> void parallelSort(@NonNull T[], @Nullable java.util.Comparator<? super T>);
+    method public static <T> void parallelSort(@NonNull T[], int, int, @Nullable java.util.Comparator<? super T>);
+    method public static <T> void setAll(@NonNull T[], @NonNull java.util.function.IntFunction<? extends T>);
+    method public static void setAll(@NonNull int[], @NonNull java.util.function.IntUnaryOperator);
+    method public static void setAll(@NonNull long[], @NonNull java.util.function.IntToLongFunction);
+    method public static void setAll(@NonNull double[], @NonNull java.util.function.IntToDoubleFunction);
+    method public static void sort(@NonNull int[]);
+    method public static void sort(@NonNull int[], int, int);
+    method public static void sort(@NonNull long[]);
+    method public static void sort(@NonNull long[], int, int);
+    method public static void sort(@NonNull short[]);
+    method public static void sort(@NonNull short[], int, int);
+    method public static void sort(@NonNull char[]);
+    method public static void sort(@NonNull char[], int, int);
+    method public static void sort(@NonNull byte[]);
+    method public static void sort(@NonNull byte[], int, int);
+    method public static void sort(@NonNull float[]);
+    method public static void sort(@NonNull float[], int, int);
+    method public static void sort(@NonNull double[]);
+    method public static void sort(@NonNull double[], int, int);
+    method public static void sort(@NonNull Object[]);
+    method public static void sort(@NonNull Object[], int, int);
+    method public static <T> void sort(@NonNull T[], @Nullable java.util.Comparator<? super T>);
+    method public static <T> void sort(@NonNull T[], int, int, @Nullable java.util.Comparator<? super T>);
+    method @NonNull public static <T> java.util.Spliterator<T> spliterator(@NonNull T[]);
+    method @NonNull public static <T> java.util.Spliterator<T> spliterator(@NonNull T[], int, int);
+    method @NonNull public static java.util.Spliterator.OfInt spliterator(@NonNull int[]);
+    method @NonNull public static java.util.Spliterator.OfInt spliterator(@NonNull int[], int, int);
+    method @NonNull public static java.util.Spliterator.OfLong spliterator(@NonNull long[]);
+    method @NonNull public static java.util.Spliterator.OfLong spliterator(@NonNull long[], int, int);
+    method @NonNull public static java.util.Spliterator.OfDouble spliterator(@NonNull double[]);
+    method @NonNull public static java.util.Spliterator.OfDouble spliterator(@NonNull double[], int, int);
+    method @NonNull public static <T> java.util.stream.Stream<T> stream(@NonNull T[]);
+    method @NonNull public static <T> java.util.stream.Stream<T> stream(@NonNull T[], int, int);
+    method @NonNull public static java.util.stream.IntStream stream(@NonNull int[]);
+    method @NonNull public static java.util.stream.IntStream stream(@NonNull int[], int, int);
+    method @NonNull public static java.util.stream.LongStream stream(@NonNull long[]);
+    method @NonNull public static java.util.stream.LongStream stream(@NonNull long[], int, int);
+    method @NonNull public static java.util.stream.DoubleStream stream(@NonNull double[]);
+    method @NonNull public static java.util.stream.DoubleStream stream(@NonNull double[], int, int);
+    method @NonNull public static String toString(@Nullable long[]);
+    method @NonNull public static String toString(@Nullable int[]);
+    method @NonNull public static String toString(@Nullable short[]);
+    method @NonNull public static String toString(@Nullable char[]);
+    method @NonNull public static String toString(@Nullable byte[]);
+    method @NonNull public static String toString(@Nullable boolean[]);
+    method @NonNull public static String toString(@Nullable float[]);
+    method @NonNull public static String toString(@Nullable double[]);
+    method @NonNull public static String toString(@Nullable Object[]);
   }
 
   public class Base64 {
@@ -66627,7 +66655,7 @@
     method public int getActualMaximum(int);
     method public int getActualMinimum(int);
     method @NonNull public static java.util.Set<java.lang.String> getAvailableCalendarTypes();
-    method public static java.util.Locale[] getAvailableLocales();
+    method @NonNull public static java.util.Locale[] getAvailableLocales();
     method @NonNull public String getCalendarType();
     method @Nullable public String getDisplayName(int, int, @NonNull java.util.Locale);
     method @Nullable public java.util.Map<java.lang.String,java.lang.Integer> getDisplayNames(int, int, @NonNull java.util.Locale);
@@ -66715,8 +66743,8 @@
     field public static final int YEAR = 1; // 0x1
     field public static final int ZONE_OFFSET = 15; // 0xf
     field protected boolean areFieldsSet;
-    field protected int[] fields;
-    field protected boolean[] isSet;
+    field @NonNull protected int[] fields;
+    field @NonNull protected boolean[] isSet;
     field protected boolean isTimeSet;
     field protected long time;
   }
@@ -66727,7 +66755,7 @@
     method @NonNull public java.util.Calendar.Builder set(int, int);
     method @NonNull public java.util.Calendar.Builder setCalendarType(@NonNull String);
     method @NonNull public java.util.Calendar.Builder setDate(int, int, int);
-    method @NonNull public java.util.Calendar.Builder setFields(int...);
+    method @NonNull public java.util.Calendar.Builder setFields(@NonNull int...);
     method @NonNull public java.util.Calendar.Builder setInstant(long);
     method @NonNull public java.util.Calendar.Builder setInstant(@NonNull java.util.Date);
     method @NonNull public java.util.Calendar.Builder setLenient(boolean);
@@ -66757,12 +66785,12 @@
     method public int size();
     method @NonNull public default java.util.Spliterator<E> spliterator();
     method @NonNull public default java.util.stream.Stream<E> stream();
-    method public Object[] toArray();
-    method public <T> T[] toArray(T[]);
+    method @NonNull public Object[] toArray();
+    method @NonNull public <T> T[] toArray(@NonNull T[]);
   }
 
   public class Collections {
-    method @java.lang.SafeVarargs public static <T> boolean addAll(@NonNull java.util.Collection<? super T>, T...);
+    method @java.lang.SafeVarargs public static <T> boolean addAll(@NonNull java.util.Collection<? super T>, @NonNull T...);
     method @NonNull public static <T> java.util.Queue<T> asLifoQueue(@NonNull java.util.Deque<T>);
     method public static <T> int binarySearch(@NonNull java.util.List<? extends java.lang.Comparable<? super T>>, @NonNull T);
     method public static <T> int binarySearch(@NonNull java.util.List<? extends T>, T, @Nullable java.util.Comparator<? super T>);
@@ -67280,7 +67308,7 @@
     method @NonNull public static java.util.List<java.lang.String> filterTags(@NonNull java.util.List<java.util.Locale.LanguageRange>, @NonNull java.util.Collection<java.lang.String>, @NonNull java.util.Locale.FilteringMode);
     method @NonNull public static java.util.List<java.lang.String> filterTags(@NonNull java.util.List<java.util.Locale.LanguageRange>, @NonNull java.util.Collection<java.lang.String>);
     method @NonNull public static java.util.Locale forLanguageTag(@NonNull String);
-    method public static java.util.Locale[] getAvailableLocales();
+    method @NonNull public static java.util.Locale[] getAvailableLocales();
     method @NonNull public String getCountry();
     method @NonNull public static java.util.Locale getDefault();
     method @NonNull public static java.util.Locale getDefault(@NonNull java.util.Locale.Category);
@@ -67298,8 +67326,8 @@
     method @NonNull public java.util.Set<java.lang.Character> getExtensionKeys();
     method @NonNull public String getISO3Country() throws java.util.MissingResourceException;
     method @NonNull public String getISO3Language() throws java.util.MissingResourceException;
-    method public static String[] getISOCountries();
-    method public static String[] getISOLanguages();
+    method @NonNull public static String[] getISOCountries();
+    method @NonNull public static String[] getISOLanguages();
     method @NonNull public String getLanguage();
     method @NonNull public String getScript();
     method @NonNull public java.util.Set<java.lang.String> getUnicodeLocaleAttributes();
@@ -67493,7 +67521,7 @@
     method public static <T> int compare(T, T, @NonNull java.util.Comparator<? super T>);
     method public static boolean deepEquals(@Nullable Object, @Nullable Object);
     method public static boolean equals(@Nullable Object, @Nullable Object);
-    method public static int hash(java.lang.Object...);
+    method public static int hash(@Nullable java.lang.Object...);
     method public static int hashCode(@Nullable Object);
     method public static boolean isNull(@Nullable Object);
     method public static boolean nonNull(@Nullable Object);
@@ -68158,7 +68186,7 @@
     method public void addElement(E);
     method public int capacity();
     method @NonNull public Object clone();
-    method public void copyInto(Object[]);
+    method public void copyInto(@NonNull Object[]);
     method public E elementAt(int);
     method @NonNull public java.util.Enumeration<E> elements();
     method public void ensureCapacity(int);
@@ -68178,7 +68206,7 @@
     method public void trimToSize();
     field protected int capacityIncrement;
     field protected int elementCount;
-    field protected Object[] elementData;
+    field @NonNull protected Object[] elementData;
   }
 
   public class WeakHashMap<K, V> extends java.util.AbstractMap<K,V> implements java.util.Map<K,V> {
@@ -68569,7 +68597,7 @@
   public class CopyOnWriteArrayList<E> implements java.lang.Cloneable java.util.List<E> java.util.RandomAccess java.io.Serializable {
     ctor public CopyOnWriteArrayList();
     ctor public CopyOnWriteArrayList(@NonNull java.util.Collection<? extends E>);
-    ctor public CopyOnWriteArrayList(E[]);
+    ctor public CopyOnWriteArrayList(@NonNull E[]);
     method public boolean add(E);
     method public void add(int, E);
     method public boolean addAll(@NonNull java.util.Collection<? extends E>);
@@ -68597,8 +68625,8 @@
     method public E set(int, E);
     method public int size();
     method @NonNull public java.util.List<E> subList(int, int);
-    method public Object[] toArray();
-    method public <T> T[] toArray(T[]);
+    method @NonNull public Object[] toArray();
+    method @NonNull public <T> T[] toArray(@NonNull T[]);
   }
 
   public class CopyOnWriteArraySet<E> extends java.util.AbstractSet<E> implements java.io.Serializable {
@@ -70350,7 +70378,7 @@
     method public void config(@NonNull java.util.function.Supplier<java.lang.String>);
     method public void entering(@Nullable String, @Nullable String);
     method public void entering(@Nullable String, @Nullable String, @Nullable Object);
-    method public void entering(@Nullable String, @Nullable String, Object[]);
+    method public void entering(@Nullable String, @Nullable String, @Nullable Object[]);
     method public void exiting(@Nullable String, @Nullable String);
     method public void exiting(@Nullable String, @Nullable String, @Nullable Object);
     method public void fine(@Nullable String);
@@ -70363,7 +70391,7 @@
     method @NonNull public static java.util.logging.Logger getAnonymousLogger(@Nullable String);
     method @Nullable public java.util.logging.Filter getFilter();
     method @NonNull public static final java.util.logging.Logger getGlobal();
-    method public java.util.logging.Handler[] getHandlers();
+    method @NonNull public java.util.logging.Handler[] getHandlers();
     method @Nullable public java.util.logging.Level getLevel();
     method @NonNull public static java.util.logging.Logger getLogger(@NonNull String);
     method @NonNull public static java.util.logging.Logger getLogger(@NonNull String, @Nullable String);
@@ -70379,7 +70407,7 @@
     method public void log(@NonNull java.util.logging.Level, @Nullable String);
     method public void log(@NonNull java.util.logging.Level, @NonNull java.util.function.Supplier<java.lang.String>);
     method public void log(@NonNull java.util.logging.Level, @Nullable String, @Nullable Object);
-    method public void log(@NonNull java.util.logging.Level, @Nullable String, Object[]);
+    method public void log(@NonNull java.util.logging.Level, @Nullable String, @Nullable Object[]);
     method public void log(@NonNull java.util.logging.Level, @Nullable String, @Nullable Throwable);
     method public void log(@NonNull java.util.logging.Level, @Nullable Throwable, @NonNull java.util.function.Supplier<java.lang.String>);
     method public void logp(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String);
@@ -70390,8 +70418,8 @@
     method public void logp(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable Throwable, @NonNull java.util.function.Supplier<java.lang.String>);
     method @Deprecated public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String, @Nullable String);
     method @Deprecated public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String, @Nullable String, @Nullable Object);
-    method @Deprecated public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String, @Nullable String, Object[]);
-    method public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable java.util.ResourceBundle, @Nullable String, java.lang.Object...);
+    method @Deprecated public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String, @Nullable String, @Nullable Object[]);
+    method public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable java.util.ResourceBundle, @Nullable String, @Nullable java.lang.Object...);
     method @Deprecated public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable String, @Nullable String, @Nullable Throwable);
     method public void logrb(@NonNull java.util.logging.Level, @Nullable String, @Nullable String, @Nullable java.util.ResourceBundle, @Nullable String, @Nullable Throwable);
     method public void removeHandler(@Nullable java.util.logging.Handler) throws java.lang.SecurityException;
@@ -70653,8 +70681,8 @@
     method public static boolean matches(@NonNull String, @NonNull CharSequence);
     method @NonNull public String pattern();
     method @NonNull public static String quote(@NonNull String);
-    method public String[] split(@NonNull CharSequence, int);
-    method public String[] split(@NonNull CharSequence);
+    method @NonNull public String[] split(@NonNull CharSequence, int);
+    method @NonNull public String[] split(@NonNull CharSequence);
     method @NonNull public java.util.stream.Stream<java.lang.String> splitAsStream(@NonNull CharSequence);
     field public static final int CANON_EQ = 128; // 0x80
     field public static final int CASE_INSENSITIVE = 2; // 0x2
diff --git a/api/system-current.txt b/api/system-current.txt
index 8ce317f..097cb70 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -743,14 +743,18 @@
   public final class BluetoothDevice implements android.os.Parcelable {
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN) public boolean cancelBondProcess();
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public String getMetadata(int);
+    method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean getSilenceMode();
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH) public boolean isConnected();
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH) public boolean isEncrypted();
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN) public boolean removeBond();
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean setMetadata(int, String);
     method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean setPhonebookAccessPermission(int);
+    method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean setSilenceMode(boolean);
     field public static final int ACCESS_ALLOWED = 1; // 0x1
     field public static final int ACCESS_REJECTED = 2; // 0x2
     field public static final int ACCESS_UNKNOWN = 0; // 0x0
+    field public static final String ACTION_SILENCE_MODE_CHANGED = "android.bluetooth.device.action.SILENCE_MODE_CHANGED";
+    field public static final String EXTRA_SILENCE_ENABLED = "android.bluetooth.device.extra.SILENCE_ENABLED";
     field public static final int METADATA_COMPANION_APP = 4; // 0x4
     field public static final int METADATA_ENHANCED_SETTINGS_UI_URI = 16; // 0x10
     field public static final int METADATA_HARDWARE_VERSION = 3; // 0x3
@@ -835,6 +839,7 @@
     field public static final String CONTEXTHUB_SERVICE = "contexthub";
     field public static final String EUICC_CARD_SERVICE = "euicc_card";
     field public static final String HDMI_CONTROL_SERVICE = "hdmi_control";
+    field public static final String NETD_SERVICE = "netd";
     field public static final String NETWORK_SCORE_SERVICE = "network_score";
     field public static final String OEM_LOCK_SERVICE = "oem_lock";
     field public static final String PERSISTENT_DATA_BLOCK_SERVICE = "persistent_data_block";
@@ -3083,12 +3088,14 @@
 
   public final class IpPrefix implements android.os.Parcelable {
     ctor public IpPrefix(java.net.InetAddress, int);
+    ctor public IpPrefix(String);
   }
 
   public class LinkAddress implements android.os.Parcelable {
     ctor public LinkAddress(java.net.InetAddress, int, int, int);
     ctor public LinkAddress(java.net.InetAddress, int);
     ctor public LinkAddress(String);
+    ctor public LinkAddress(String, int, int);
     method public boolean isGlobalPreferred();
     method public boolean isIPv4();
     method public boolean isIPv6();
@@ -3099,6 +3106,7 @@
     ctor public LinkProperties();
     ctor public LinkProperties(android.net.LinkProperties);
     method public boolean addDnsServer(java.net.InetAddress);
+    method public boolean addLinkAddress(android.net.LinkAddress);
     method public boolean addRoute(android.net.RouteInfo);
     method public void clear();
     method @Nullable public android.net.IpPrefix getNat64Prefix();
@@ -3113,6 +3121,7 @@
     method public boolean isProvisioned();
     method public boolean isReachable(java.net.InetAddress);
     method public boolean removeDnsServer(java.net.InetAddress);
+    method public boolean removeLinkAddress(android.net.LinkAddress);
     method public boolean removeRoute(android.net.RouteInfo);
     method public void setDnsServers(java.util.Collection<java.net.InetAddress>);
     method public void setDomains(String);
@@ -3129,6 +3138,7 @@
   }
 
   public class Network implements android.os.Parcelable {
+    ctor public Network(android.net.Network);
     method public android.net.Network getPrivateDnsBypassingCopy();
   }
 
@@ -3214,10 +3224,31 @@
     field public final android.net.RssiCurve rssiCurve;
   }
 
+  public final class StaticIpConfiguration implements android.os.Parcelable {
+    ctor public StaticIpConfiguration();
+    ctor public StaticIpConfiguration(android.net.StaticIpConfiguration);
+    method public void addDnsServer(java.net.InetAddress);
+    method public void clear();
+    method public int describeContents();
+    method public java.util.List<java.net.InetAddress> getDnsServers();
+    method public String getDomains();
+    method public java.net.InetAddress getGateway();
+    method public android.net.LinkAddress getIpAddress();
+    method public java.util.List<android.net.RouteInfo> getRoutes(String);
+    method public void setDomains(String);
+    method public void setGateway(java.net.InetAddress);
+    method public void setIpAddress(android.net.LinkAddress);
+    method public void writeToParcel(android.os.Parcel, int);
+    field public static final android.os.Parcelable.Creator<android.net.StaticIpConfiguration> CREATOR;
+  }
+
   public class TrafficStats {
     method public static void setThreadStatsTagApp();
     method public static void setThreadStatsTagBackup();
     method public static void setThreadStatsTagRestore();
+    field public static final int TAG_SYSTEM_DHCP = -192; // 0xffffff40
+    field public static final int TAG_SYSTEM_DHCP_SERVER = -186; // 0xffffff46
+    field public static final int TAG_SYSTEM_PROBE = -190; // 0xffffff42
   }
 
   public class VpnService extends android.app.Service {
@@ -3239,6 +3270,49 @@
 
 }
 
+package android.net.apf {
+
+  public class ApfCapabilities {
+    ctor public ApfCapabilities(int, int, int);
+    method public static boolean getApfDrop8023Frames(android.content.Context);
+    method public static int[] getApfEthTypeBlackList(android.content.Context);
+    method public boolean hasDataAccess();
+    field public final int apfPacketFormat;
+    field public final int apfVersionSupported;
+    field public final int maximumApfProgramSize;
+  }
+
+}
+
+package android.net.captiveportal {
+
+  public final class CaptivePortalProbeResult {
+    ctor public CaptivePortalProbeResult(int);
+    ctor public CaptivePortalProbeResult(int, String, String);
+    ctor public CaptivePortalProbeResult(int, String, String, android.net.captiveportal.CaptivePortalProbeSpec);
+    method public boolean isFailed();
+    method public boolean isPortal();
+    method public boolean isSuccessful();
+    field public static final android.net.captiveportal.CaptivePortalProbeResult FAILED;
+    field public static final int FAILED_CODE = 599; // 0x257
+    field public static final int PORTAL_CODE = 302; // 0x12e
+    field public static final android.net.captiveportal.CaptivePortalProbeResult SUCCESS;
+    field public static final int SUCCESS_CODE = 204; // 0xcc
+    field public final String detectUrl;
+    field @Nullable public final android.net.captiveportal.CaptivePortalProbeSpec probeSpec;
+    field public final String redirectUrl;
+  }
+
+  public abstract class CaptivePortalProbeSpec {
+    method public String getEncodedSpec();
+    method public abstract android.net.captiveportal.CaptivePortalProbeResult getResult(int, @Nullable String);
+    method public java.net.URL getUrl();
+    method public static java.util.Collection<android.net.captiveportal.CaptivePortalProbeSpec> parseCaptivePortalProbeSpecs(String);
+    method @Nullable public static android.net.captiveportal.CaptivePortalProbeSpec parseSpecOrNull(@Nullable String);
+  }
+
+}
+
 package android.net.metrics {
 
   public final class ApfProgramEvent implements android.net.metrics.IpConnectivityLog.Event {
@@ -3398,10 +3472,19 @@
 package android.net.util {
 
   public class SocketUtils {
+    method public static void addArpEntry(java.net.Inet4Address, android.net.MacAddress, String, java.io.FileDescriptor) throws java.io.IOException;
+    method public static void attachControlPacketFilter(java.io.FileDescriptor, int) throws java.net.SocketException;
+    method public static void attachDhcpFilter(java.io.FileDescriptor) throws java.net.SocketException;
+    method public static void attachRaFilter(java.io.FileDescriptor, int) throws java.net.SocketException;
+    method public static void bindSocket(java.io.FileDescriptor, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
     method public static void bindSocketToInterface(java.io.FileDescriptor, String) throws android.system.ErrnoException;
+    method public static void closeSocket(java.io.FileDescriptor) throws java.io.IOException;
+    method public static void connectSocket(java.io.FileDescriptor, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
     method public static java.net.SocketAddress makeNetlinkSocketAddress(int, int);
     method public static java.net.SocketAddress makePacketSocketAddress(short, int);
     method public static java.net.SocketAddress makePacketSocketAddress(int, byte[]);
+    method public static void sendTo(java.io.FileDescriptor, byte[], int, int, int, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
+    method public static void setSocketTimeValueOption(java.io.FileDescriptor, int, int, long) throws android.system.ErrnoException;
   }
 
 }
@@ -3861,6 +3944,7 @@
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableNdefPush();
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean removeNfcUnlockHandler(android.nfc.NfcAdapter.NfcUnlockHandler);
     method public void setNdefPushMessage(android.nfc.NdefMessage, android.app.Activity, int);
+    method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean setNfcSecure(boolean);
     field public static final int FLAG_NDEF_PUSH_NO_CONFIRM = 1; // 0x1
   }
 
@@ -3877,6 +3961,36 @@
     field public static final String EXTRA_EVENT_TIMESTAMP = "android.os.extra.EVENT_TIMESTAMP";
   }
 
+  public class BugreportManager {
+    method @RequiresPermission(android.Manifest.permission.DUMP) public void cancelBugreport();
+    method @RequiresPermission(android.Manifest.permission.DUMP) public void startBugreport(@NonNull android.os.ParcelFileDescriptor, @Nullable android.os.ParcelFileDescriptor, @NonNull android.os.BugreportParams, @NonNull java.util.concurrent.Executor, @NonNull android.os.BugreportManager.BugreportCallback);
+  }
+
+  public abstract static class BugreportManager.BugreportCallback {
+    ctor public BugreportManager.BugreportCallback();
+    method public void onError(int);
+    method public void onFinished();
+    method public void onProgress(float);
+    field public static final int BUGREPORT_ERROR_INVALID_INPUT = 1; // 0x1
+    field public static final int BUGREPORT_ERROR_RUNTIME = 2; // 0x2
+    field public static final int BUGREPORT_ERROR_USER_CONSENT_TIMED_OUT = 4; // 0x4
+    field public static final int BUGREPORT_ERROR_USER_DENIED_CONSENT = 3; // 0x3
+  }
+
+  public final class BugreportParams {
+    ctor public BugreportParams(@android.os.BugreportParams.BugreportMode int);
+    method public int getMode();
+    field public static final int BUGREPORT_MODE_FULL = 0; // 0x0
+    field public static final int BUGREPORT_MODE_INTERACTIVE = 1; // 0x1
+    field public static final int BUGREPORT_MODE_REMOTE = 2; // 0x2
+    field public static final int BUGREPORT_MODE_TELEPHONY = 4; // 0x4
+    field public static final int BUGREPORT_MODE_WEAR = 3; // 0x3
+    field public static final int BUGREPORT_MODE_WIFI = 5; // 0x5
+  }
+
+  @java.lang.annotation.Retention(java.lang.annotation.RetentionPolicy.SOURCE) @IntDef(prefix={"BUGREPORT_MODE_"}, value={android.os.BugreportParams.BUGREPORT_MODE_FULL, android.os.BugreportParams.BUGREPORT_MODE_INTERACTIVE, android.os.BugreportParams.BUGREPORT_MODE_REMOTE, android.os.BugreportParams.BUGREPORT_MODE_WEAR, android.os.BugreportParams.BUGREPORT_MODE_TELEPHONY, android.os.BugreportParams.BUGREPORT_MODE_WIFI}) public static @interface BugreportParams.BugreportMode {
+  }
+
   public final class ConfigUpdate {
     field public static final String ACTION_UPDATE_CARRIER_ID_DB = "android.os.action.UPDATE_CARRIER_ID_DB";
     field public static final String ACTION_UPDATE_CARRIER_PROVISIONING_URLS = "android.intent.action.UPDATE_CARRIER_PROVISIONING_URLS";
@@ -5933,7 +6047,7 @@
   }
 
   public class PhoneStateListener {
-    method public void onCallAttributesChanged(android.telephony.CallAttributes);
+    method public void onCallAttributesChanged(@NonNull android.telephony.CallAttributes);
     method public void onCallDisconnectCauseChanged(int, int);
     method public void onPreciseCallStateChanged(android.telephony.PreciseCallState);
     method public void onPreciseDataConnectionStateChanged(android.telephony.PreciseDataConnectionState);
@@ -6112,7 +6226,6 @@
 
   public class SubscriptionInfo implements android.os.Parcelable {
     method @Nullable public java.util.List<android.telephony.UiccAccessRule> getAccessRules();
-    method public int getCardId();
     method public int getProfileClass();
   }
 
@@ -6172,7 +6285,6 @@
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void enableVideoCalling(boolean);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getAidForAppType(int);
     method @Deprecated @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public java.util.List<android.service.carrier.CarrierIdentifier> getAllowedCarriers(int);
-    method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public int getCardIdForDefaultEuicc();
     method public java.util.List<java.lang.String> getCarrierPackageNamesForIntent(android.content.Intent);
     method public java.util.List<java.lang.String> getCarrierPackageNamesForIntentAndPhone(android.content.Intent, int);
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public android.telephony.CarrierRestrictionRules getCarrierRestrictionRules();
@@ -6193,9 +6305,9 @@
     method @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public int getRadioPowerState();
     method public int getSimApplicationState();
     method public int getSimCardState();
+    method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getSimLocale();
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public int getSupportedRadioAccessFamily();
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public java.util.List<android.telephony.TelephonyHistogram> getTelephonyHistograms();
-    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public android.telephony.UiccCardInfo[] getUiccCardsInfo();
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public android.telephony.UiccSlotInfo[] getUiccSlotsInfo();
     method @Nullable public android.os.Bundle getVisualVoicemailSettings();
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public int getVoiceActivationState();
@@ -6204,6 +6316,7 @@
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public boolean isCurrentPotentialEmergencyNumber(@NonNull String);
     method public boolean isDataConnectivityPossible();
     method @Deprecated @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public boolean isIdle();
+    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public boolean isMultisimCarrierRestricted();
     method @Deprecated @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public boolean isOffhook();
     method @Deprecated @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public boolean isRadioOn();
     method @Deprecated @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public boolean isRinging();
@@ -6220,6 +6333,7 @@
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setDataActivationState(int);
     method @Deprecated @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setDataEnabled(int, boolean);
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setDataRoamingEnabled(boolean);
+    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setMultisimCarrierRestriction(boolean);
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public boolean setRadio(boolean);
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public boolean setRadioPower(boolean);
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setSimPowerState(int);
@@ -6243,7 +6357,6 @@
     field public static final String EXTRA_SIM_STATE = "android.telephony.extra.SIM_STATE";
     field public static final String EXTRA_VISUAL_VOICEMAIL_ENABLED_BY_USER_BOOL = "android.telephony.extra.VISUAL_VOICEMAIL_ENABLED_BY_USER_BOOL";
     field public static final String EXTRA_VOICEMAIL_SCRAMBLED_PIN_STRING = "android.telephony.extra.VOICEMAIL_SCRAMBLED_PIN_STRING";
-    field public static final int INVALID_CARD_ID = -1; // 0xffffffff
     field public static final long MAX_NUMBER_VERIFICATION_TIMEOUT_MILLIS = 60000L; // 0xea60L
     field public static final int NETWORK_MODE_CDMA_EVDO = 4; // 0x4
     field public static final int NETWORK_MODE_CDMA_NO_EVDO = 5; // 0x5
@@ -6318,18 +6431,6 @@
     field public static final android.os.Parcelable.Creator<android.telephony.UiccAccessRule> CREATOR;
   }
 
-  public class UiccCardInfo implements android.os.Parcelable {
-    ctor public UiccCardInfo(boolean, int, String, String, int);
-    method public int describeContents();
-    method public int getCardId();
-    method public String getEid();
-    method public String getIccId();
-    method public int getSlotIndex();
-    method public boolean isEuicc();
-    method public void writeToParcel(android.os.Parcel, int);
-    field public static final android.os.Parcelable.Creator<android.telephony.UiccCardInfo> CREATOR;
-  }
-
   public class UiccSlotInfo implements android.os.Parcelable {
     ctor public UiccSlotInfo(boolean, boolean, String, int, int, boolean);
     method public int describeContents();
@@ -6357,7 +6458,7 @@
 package android.telephony.data {
 
   public final class DataCallResponse implements android.os.Parcelable {
-    ctor public DataCallResponse(int, int, int, int, @Nullable String, @Nullable String, @Nullable java.util.List<android.net.LinkAddress>, @Nullable java.util.List<java.net.InetAddress>, @Nullable java.util.List<java.net.InetAddress>, @Nullable java.util.List<java.lang.String>, int);
+    ctor public DataCallResponse(int, int, int, int, int, @Nullable String, @Nullable java.util.List<android.net.LinkAddress>, @Nullable java.util.List<java.net.InetAddress>, @Nullable java.util.List<java.net.InetAddress>, @Nullable java.util.List<java.lang.String>, int);
     ctor public DataCallResponse(android.os.Parcel);
     method public int describeContents();
     method public int getActive();
@@ -6368,9 +6469,9 @@
     method @NonNull public String getIfname();
     method public int getMtu();
     method @NonNull public java.util.List<java.lang.String> getPcscfs();
+    method public int getProtocolType();
     method public int getStatus();
     method public int getSuggestedRetryTime();
-    method @NonNull public String getType();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.data.DataCallResponse> CREATOR;
   }
@@ -6384,8 +6485,8 @@
     method public int getMtu();
     method public String getPassword();
     method public int getProfileId();
-    method public String getProtocol();
-    method public String getRoamingProtocol();
+    method public int getProtocol();
+    method public int getRoamingProtocol();
     method public int getSupportedApnTypesBitmap();
     method public int getType();
     method public String getUserName();
@@ -6611,11 +6712,13 @@
     method public static int getCallTypeFromVideoState(int);
     method public int getEmergencyCallRouting();
     method public int getEmergencyServiceCategories();
+    method public java.util.List<java.lang.String> getEmergencyUrns();
     method public android.telephony.ims.ImsStreamMediaProfile getMediaProfile();
     method public int getRestrictCause();
     method public int getServiceType();
     method public static int getVideoStateFromCallType(int);
     method public static int getVideoStateFromImsCallProfile(android.telephony.ims.ImsCallProfile);
+    method public boolean isEmergencyCallTesting();
     method public boolean isVideoCall();
     method public boolean isVideoPaused();
     method public static int presentationToOir(int);
@@ -6624,7 +6727,9 @@
     method public void setCallExtraInt(String, int);
     method public void setCallRestrictCause(int);
     method public void setEmergencyCallRouting(int);
+    method public void setEmergencyCallTesting(boolean);
     method public void setEmergencyServiceCategories(int);
+    method public void setEmergencyUrns(java.util.List<java.lang.String>);
     method public void updateCallExtras(android.telephony.ims.ImsCallProfile);
     method public void updateCallType(android.telephony.ims.ImsCallProfile);
     method public void updateMediaProfile(android.telephony.ims.ImsCallProfile);
@@ -7199,12 +7304,20 @@
 
   public class ProvisioningManager {
     method public static android.telephony.ims.ProvisioningManager createForSubscriptionId(android.content.Context, int);
-    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public int getProvisioningIntValue(int);
-    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getProvisioningStringValue(int);
+    method @WorkerThread @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public int getProvisioningIntValue(int);
+    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public boolean getProvisioningStatusForCapability(@android.telephony.ims.feature.MmTelFeature.MmTelCapabilities.MmTelCapability int, int);
+    method @WorkerThread @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getProvisioningStringValue(int);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public void registerProvisioningChangedCallback(java.util.concurrent.Executor, @NonNull android.telephony.ims.ProvisioningManager.Callback);
-    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public int setProvisioningIntValue(int, int);
-    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public int setProvisioningStringValue(int, String);
+    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) @WorkerThread public int setProvisioningIntValue(int, int);
+    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void setProvisioningStatusForCapability(@android.telephony.ims.feature.MmTelFeature.MmTelCapabilities.MmTelCapability int, int, boolean);
+    method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) @WorkerThread public int setProvisioningStringValue(int, String);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public void unregisterProvisioningChangedCallback(@NonNull android.telephony.ims.ProvisioningManager.Callback);
+    field public static final int KEY_VOICE_OVER_WIFI_MODE_OVERRIDE = 27; // 0x1b
+    field public static final int KEY_VOICE_OVER_WIFI_ROAMING_ENABLED_OVERRIDE = 26; // 0x1a
+    field public static final int PROVISIONING_VALUE_DISABLED = 0; // 0x0
+    field public static final int PROVISIONING_VALUE_ENABLED = 1; // 0x1
+    field public static final String STRING_QUERY_RESULT_ERROR_GENERIC = "STRING_QUERY_RESULT_ERROR_GENERIC";
+    field public static final String STRING_QUERY_RESULT_ERROR_NOT_READY = "STRING_QUERY_RESULT_ERROR_NOT_READY";
   }
 
   public static class ProvisioningManager.Callback {
diff --git a/api/test-current.txt b/api/test-current.txt
index 03692e9..af455fb 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -613,6 +613,7 @@
 
   public final class IpPrefix implements android.os.Parcelable {
     ctor public IpPrefix(java.net.InetAddress, int);
+    ctor public IpPrefix(String);
   }
 
   public final class IpSecManager {
@@ -621,6 +622,9 @@
 
   public class LinkAddress implements android.os.Parcelable {
     ctor public LinkAddress(java.net.InetAddress, int, int, int);
+    ctor public LinkAddress(java.net.InetAddress, int);
+    ctor public LinkAddress(String);
+    ctor public LinkAddress(String, int, int);
     method public boolean isGlobalPreferred();
     method public boolean isIPv4();
     method public boolean isIPv6();
@@ -630,6 +634,7 @@
   public final class LinkProperties implements android.os.Parcelable {
     ctor public LinkProperties(android.net.LinkProperties);
     method public boolean addDnsServer(java.net.InetAddress);
+    method public boolean addLinkAddress(android.net.LinkAddress);
     method @Nullable public android.net.IpPrefix getNat64Prefix();
     method public java.util.List<java.net.InetAddress> getPcscfServers();
     method public String getTcpBufferSizes();
@@ -642,6 +647,7 @@
     method public boolean isProvisioned();
     method public boolean isReachable(java.net.InetAddress);
     method public boolean removeDnsServer(java.net.InetAddress);
+    method public boolean removeLinkAddress(android.net.LinkAddress);
     method public boolean removeRoute(android.net.RouteInfo);
     method public void setNat64Prefix(android.net.IpPrefix);
     method public void setPcscfServers(java.util.Collection<java.net.InetAddress>);
@@ -652,6 +658,7 @@
   }
 
   public class Network implements android.os.Parcelable {
+    ctor public Network(android.net.Network);
     method public android.net.Network getPrivateDnsBypassingCopy();
   }
 
@@ -669,11 +676,75 @@
     field public static final int RTN_UNREACHABLE = 7; // 0x7
   }
 
+  public final class StaticIpConfiguration implements android.os.Parcelable {
+    ctor public StaticIpConfiguration();
+    ctor public StaticIpConfiguration(android.net.StaticIpConfiguration);
+    method public void addDnsServer(java.net.InetAddress);
+    method public void clear();
+    method public int describeContents();
+    method public java.util.List<java.net.InetAddress> getDnsServers();
+    method public String getDomains();
+    method public java.net.InetAddress getGateway();
+    method public android.net.LinkAddress getIpAddress();
+    method public java.util.List<android.net.RouteInfo> getRoutes(String);
+    method public void setDomains(String);
+    method public void setGateway(java.net.InetAddress);
+    method public void setIpAddress(android.net.LinkAddress);
+    method public void writeToParcel(android.os.Parcel, int);
+    field public static final android.os.Parcelable.Creator<android.net.StaticIpConfiguration> CREATOR;
+  }
+
   public class TrafficStats {
     method public static long getLoopbackRxBytes();
     method public static long getLoopbackRxPackets();
     method public static long getLoopbackTxBytes();
     method public static long getLoopbackTxPackets();
+    field public static final int TAG_SYSTEM_DHCP = -192; // 0xffffff40
+    field public static final int TAG_SYSTEM_DHCP_SERVER = -186; // 0xffffff46
+    field public static final int TAG_SYSTEM_PROBE = -190; // 0xffffff42
+  }
+
+}
+
+package android.net.apf {
+
+  public class ApfCapabilities {
+    ctor public ApfCapabilities(int, int, int);
+    method public static boolean getApfDrop8023Frames(android.content.Context);
+    method public static int[] getApfEthTypeBlackList(android.content.Context);
+    method public boolean hasDataAccess();
+    field public final int apfPacketFormat;
+    field public final int apfVersionSupported;
+    field public final int maximumApfProgramSize;
+  }
+
+}
+
+package android.net.captiveportal {
+
+  public final class CaptivePortalProbeResult {
+    ctor public CaptivePortalProbeResult(int);
+    ctor public CaptivePortalProbeResult(int, String, String);
+    ctor public CaptivePortalProbeResult(int, String, String, android.net.captiveportal.CaptivePortalProbeSpec);
+    method public boolean isFailed();
+    method public boolean isPortal();
+    method public boolean isSuccessful();
+    field public static final android.net.captiveportal.CaptivePortalProbeResult FAILED;
+    field public static final int FAILED_CODE = 599; // 0x257
+    field public static final int PORTAL_CODE = 302; // 0x12e
+    field public static final android.net.captiveportal.CaptivePortalProbeResult SUCCESS;
+    field public static final int SUCCESS_CODE = 204; // 0xcc
+    field public final String detectUrl;
+    field @Nullable public final android.net.captiveportal.CaptivePortalProbeSpec probeSpec;
+    field public final String redirectUrl;
+  }
+
+  public abstract class CaptivePortalProbeSpec {
+    method public String getEncodedSpec();
+    method public abstract android.net.captiveportal.CaptivePortalProbeResult getResult(int, @Nullable String);
+    method public java.net.URL getUrl();
+    method public static java.util.Collection<android.net.captiveportal.CaptivePortalProbeSpec> parseCaptivePortalProbeSpecs(String);
+    method @Nullable public static android.net.captiveportal.CaptivePortalProbeSpec parseSpecOrNull(@Nullable String);
   }
 
 }
@@ -834,6 +905,26 @@
 
 }
 
+package android.net.util {
+
+  public class SocketUtils {
+    method public static void addArpEntry(java.net.Inet4Address, android.net.MacAddress, String, java.io.FileDescriptor) throws java.io.IOException;
+    method public static void attachControlPacketFilter(java.io.FileDescriptor, int) throws java.net.SocketException;
+    method public static void attachDhcpFilter(java.io.FileDescriptor) throws java.net.SocketException;
+    method public static void attachRaFilter(java.io.FileDescriptor, int) throws java.net.SocketException;
+    method public static void bindSocket(java.io.FileDescriptor, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
+    method public static void bindSocketToInterface(java.io.FileDescriptor, String) throws android.system.ErrnoException;
+    method public static void closeSocket(java.io.FileDescriptor) throws java.io.IOException;
+    method public static void connectSocket(java.io.FileDescriptor, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
+    method public static java.net.SocketAddress makeNetlinkSocketAddress(int, int);
+    method public static java.net.SocketAddress makePacketSocketAddress(short, int);
+    method public static java.net.SocketAddress makePacketSocketAddress(int, byte[]);
+    method public static void sendTo(java.io.FileDescriptor, byte[], int, int, int, java.net.SocketAddress) throws android.system.ErrnoException, java.net.SocketException;
+    method public static void setSocketTimeValueOption(java.io.FileDescriptor, int, int, long) throws android.system.ErrnoException;
+  }
+
+}
+
 package android.os {
 
   public static class Build.VERSION {
diff --git a/cmds/statsd/OWNERS b/cmds/statsd/OWNERS
index 1315750..deebd4e 100644
--- a/cmds/statsd/OWNERS
+++ b/cmds/statsd/OWNERS
@@ -1,6 +1,7 @@
 bookatz@google.com
 cjyu@google.com
 dwchen@google.com
+gaillard@google.com
 jinyithu@google.com
 joeo@google.com
 kwekua@google.com
diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index 38130c8..5fd148e 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -23,9 +23,11 @@
 import "frameworks/base/cmds/statsd/src/atom_field_options.proto";
 import "frameworks/base/core/proto/android/app/enums.proto";
 import "frameworks/base/core/proto/android/app/job/enums.proto";
+import "frameworks/base/core/proto/android/bluetooth/a2dp/enums.proto";
 import "frameworks/base/core/proto/android/bluetooth/enums.proto";
 import "frameworks/base/core/proto/android/bluetooth/hci/enums.proto";
 import "frameworks/base/core/proto/android/bluetooth/hfp/enums.proto";
+import "frameworks/base/core/proto/android/bluetooth/smp/enums.proto";
 import "frameworks/base/core/proto/android/net/networkcapabilities.proto";
 import "frameworks/base/core/proto/android/os/enums.proto";
 import "frameworks/base/core/proto/android/server/connectivity/data_stall_event.proto";
@@ -134,6 +136,31 @@
         BluetoothLinkLayerConnectionEvent bluetooth_link_layer_connection_event = 125;
         BluetoothAclConnectionStateChanged bluetooth_acl_connection_state_changed = 126;
         BluetoothScoConnectionStateChanged bluetooth_sco_connection_state_changed = 127;
+        NfcErrorOccurred nfc_error_occurred = 134;
+        NfcStateChanged nfc_state_changed = 135;
+        NfcBeamOccurred nfc_beam_occurred = 136;
+        NfcCardemulationOccurred nfc_cardemulation_occurred = 137;
+        NfcTagOccurred nfc_tag_occurred = 138;
+        NfcHceTransactionOccurred nfc_hce_transaction_occurred = 139;
+        SeStateChanged se_state_changed = 140;
+        SeOmapiReported se_omapi_reported = 141;
+        BluetoothActiveDeviceChanged bluetooth_active_device_changed = 151;
+        BluetoothA2dpPlaybackStateChanged bluetooth_a2dp_playback_state_changed = 152;
+        BluetoothA2dpCodecConfigChanged bluetooth_a2dp_codec_config_changed = 153;
+        BluetoothA2dpCodecCapabilityChanged bluetooth_a2dp_codec_capability_changed = 154;
+        BluetoothA2dpAudioUnderrunReported bluetooth_a2dp_audio_underrun_reported = 155;
+        BluetoothA2dpAudioOverrunReported bluetooth_a2dp_audio_overrun_reported = 156;
+        BluetoothDeviceRssiReported bluetooth_device_rssi_reported = 157;
+        BluetoothDeviceFailedContactCounterReported bluetooth_device_failed_contact_counter_reported = 158;
+        BluetoothDeviceTxPowerLevelReported bluetooth_device_tx_power_level_reported = 159;
+        BluetoothHciTimeoutReported bluetooth_hci_timeout_reported = 160;
+        BluetoothQualityReportReported bluetooth_quality_report_reported = 161;
+        BluetoothManufacturerInfoReported bluetooth_device_info_reported = 162;
+        BluetoothRemoteVersionInfoReported bluetooth_remote_version_info_reported = 163;
+        BluetoothSdpAttributeReported bluetooth_sdp_attribute_reported = 164;
+        BluetoothBondStateChanged bluetooth_bond_state_changed = 165;
+        BluetoothClassicPairingEventReported bluetooth_classic_pairing_event_reported = 166;
+        BluetoothSmpPairingEventReported bluetooth_smp_pairing_event_reported = 167;
     }
 
     // Pulled events will start at field 10000.
@@ -1076,6 +1103,27 @@
     optional android.bluetooth.hfp.ScoCodec codec = 3;
 }
 
+/**
+ * Logged when active device of a profile changes
+ *
+ * Logged from:
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/a2dp/A2dpService.java
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/hfp/HeadsetService.java
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/hearingaid/HearingAidService.java
+ */
+message BluetoothActiveDeviceChanged {
+    // The profile whose active device has changed. Eg. A2DP, HEADSET, HEARING_AID
+    // From android.bluetooth.BluetoothProfile
+    optional int32 bt_profile = 1;
+    // An identifier that can be used to match events for this new active device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if there is no active device for this profile
+    optional bytes obfuscated_id = 2 [(android.os.statsd.log_mode) = MODE_BYTES];
+}
+
 // Logs when there is an event affecting Bluetooth device's link layer connection.
 // - This event is triggered when there is a related HCI command or event
 // - Users of this metrics can deduce Bluetooth device's connection state from these events
@@ -1159,6 +1207,516 @@
     optional android.bluetooth.hci.StatusEnum reason_code = 9;
 }
 
+/**
+ * Logs when there is a change in Bluetooth A2DP playback state
+ *
+ * Logged from:
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/a2dp/A2dpService.java
+ */
+message BluetoothA2dpPlaybackStateChanged {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Current playback state
+    // Default: PLAYBACK_STATE_UNKNOWN
+    optional android.bluetooth.a2dp.PlaybackStateEnum playback_state = 2;
+    // Current audio coding mode
+    // Default: AUDIO_CODING_MODE_UNKNOWN
+    optional android.bluetooth.a2dp.AudioCodingModeEnum audio_coding_mode = 3;
+}
+
+/**
+ * Logs when there is a change in A2DP codec config for a particular remote device
+ *
+ * Logged from:
+ *     frameworks/base/core/java/android/bluetooth/BluetoothCodecConfig.java
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/a2dp/A2dpService.java
+ */
+message BluetoothA2dpCodecConfigChanged {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Type of codec as defined by various SOURCE_CODEC_TYPE_* constants in BluetoothCodecConfig
+    // Default SOURCE_CODEC_TYPE_INVALID
+    optional int32 codec_type = 2;
+    // Codec priroity, the higher the more preferred, -1 for disabled
+    // Default: CODEC_PRIORITY_DEFAULT
+    optional int32 codec_priority = 3;
+    // Sample rate in Hz as defined by various SAMPLE_RATE_* constants in BluetoothCodecConfig
+    // Default: SAMPLE_RATE_NONE
+    optional int32 sample_rate = 4;
+    // Bits per sample as defined by various BITS_PER_SAMPLE_* constants in BluetoothCodecConfig
+    // Default: BITS_PER_SAMPLE_NONE
+    optional int32 bits_per_sample = 5;
+    // Channel mode as defined by various CHANNEL_MODE_* constants in BluetoothCodecConfig
+    // Default: CHANNEL_MODE_NONE
+    optional int32 channel_mode = 6;
+    // Codec specific values
+    // Default 0
+    optional int64 codec_specific_1 = 7;
+    optional int64 codec_specific_2 = 8;
+    optional int64 codec_specific_3 = 9;
+    optional int64 codec_specific_4 = 10;
+}
+
+/**
+ * Logs when there is a change in selectable A2DP codec capability for a paricular remote device
+ * Each codec's capability is logged separately due to statsd restriction
+ *
+ * Logged from:
+ *     frameworks/base/core/java/android/bluetooth/BluetoothCodecConfig.java
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/a2dp/A2dpService.java
+ */
+message BluetoothA2dpCodecCapabilityChanged {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Type of codec as defined by various SOURCE_CODEC_TYPE_* constants in BluetoothCodecConfig
+    // Default SOURCE_CODEC_TYPE_INVALID
+    optional int32 codec_type = 2;
+    // Codec priroity, the higher the more preferred, -1 for disabled
+    // Default: CODEC_PRIORITY_DEFAULT
+    optional int32 codec_priority = 3;
+    // A bit field of supported sample rates as defined by various SAMPLE_RATE_* constants
+    // in BluetoothCodecConfig
+    // Default: empty and SAMPLE_RATE_NONE for individual item
+    optional int32 sample_rate = 4;
+    // A bit field of supported bits per sample as defined by various BITS_PER_SAMPLE_* constants
+    // in BluetoothCodecConfig
+    // Default: empty and BITS_PER_SAMPLE_NONE for individual item
+    optional int32 bits_per_sample = 5;
+    // A bit field of supported channel mode as defined by various CHANNEL_MODE_* constants in
+    // BluetoothCodecConfig
+    // Default: empty and CHANNEL_MODE_NONE for individual item
+    optional int32 channel_mode = 6;
+    // Codec specific values
+    // Default 0
+    optional int64 codec_specific_1 = 7;
+    optional int64 codec_specific_2 = 8;
+    optional int64 codec_specific_3 = 9;
+    optional int64 codec_specific_4 = 10;
+}
+
+/**
+ * Logs when A2DP failed to read from PCM source.
+ * This typically happens when audio HAL cannot supply A2DP with data fast enough for encoding.
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothA2dpAudioUnderrunReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Encoding interval in nanoseconds
+    // Default: 0
+    optional int64 encoding_interval_nanos = 2;
+    // Number of bytes of PCM data that could not be read from the source
+    // Default: 0
+    optional int32 num_missing_pcm_bytes = 3;
+}
+
+/**
+ * Logs when A2DP failed send encoded data to the remote device fast enough such that the transmit
+ * buffer queue is full and we have to drop data
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothA2dpAudioOverrunReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Encoding interval in nanoseconds
+    // Default: 0
+    optional int64 encoding_interval_nanos = 2;
+    // Number of buffers dropped in this event
+    // Each buffer is encoded in one encoding interval and consists of multiple encoded frames
+    // Default: 0
+    optional int32 num_dropped_buffers = 3;
+    // Number of encoded buffers dropped in this event
+    // Default 0
+    optional int32 num_dropped_encoded_frames = 4;
+    // Number of encoded bytes dropped in this event
+    // Default: 0
+    optional int32 num_dropped_encoded_bytes = 5;
+}
+
+/**
+ * Logs when we receive reports regarding a device's RSSI value
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothDeviceRssiReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Connection handle of this connection if available
+    // Range: 0x0000 - 0x0EFF (12 bits)
+    // Default: 0xFFFF if the handle is unknown
+    optional int32 connection_handle = 2;
+    // HCI command status code if this is triggerred by hci_cmd
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum hci_status = 3;
+    // BR/EDR
+    //   Range: -128 ≤ N ≤ 127 (signed integer)
+    //   Units: dB
+    // LE:
+    //   Range: -127 to 20, 127 (signed integer)
+    //   Units: dBm
+    // Invalid when an out of range value is reported
+    optional int32 rssi = 4;
+}
+
+/**
+ * Logs when we receive reports regarding how many consecutive failed contacts for a connection
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothDeviceFailedContactCounterReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Connection handle of this connection if available
+    // Range: 0x0000 - 0x0EFF (12 bits)
+    // Default: 0xFFFF if the handle is unknown
+    optional int32 connection_handle = 2;
+    // HCI command status code if this is triggerred by hci_cmd
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum cmd_status = 3;
+    // Number of consecutive failed contacts for a connection corresponding to the Handle
+    // Range: uint16_t, 0-0xFFFF
+    // Default: 0xFFFFF
+    optional int32 failed_contact_counter = 4;
+}
+
+/**
+ * Logs when we receive reports regarding the tranmit power level used for a specific connection
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothDeviceTxPowerLevelReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Connection handle of this connection if available
+    // Range: 0x0000 - 0x0EFF (12 bits)
+    // Default: 0xFFFF if the handle is unknown
+    optional int32 connection_handle = 2;
+    // HCI command status code if this is triggered by hci_cmd
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum hci_status = 3;
+    // Range: -30 ≤ N ≤ 20
+    // Units: dBm
+    // Invalid when an out of range value is reported
+    optional int32 transmit_power_level = 4;
+}
+
+/**
+ * Logs when Bluetooth controller failed to reply with command status within a timeout period after
+ * receiving an HCI command from the host
+ *
+ * Logged from: system/bt
+ */
+message BluetoothHciTimeoutReported {
+    // HCI command associated with this event
+    // Default: CMD_UNKNOWN
+    optional android.bluetooth.hci.CommandEnum hci_command = 1;
+}
+
+/**
+ * Logs when we receive Bluetooth Link Quality Report event from the controller
+ * See Android Bluetooth HCI specification for more details
+ *
+ * Note: all count and bytes field are counted since last event
+ *
+ * Logged from: system/bt
+ */
+message BluetoothQualityReportReported {
+    // Quality report ID
+    // Original type: uint8_t
+    // Default: BQR_ID_UNKNOWN
+    optional android.bluetooth.hci.BqrIdEnum quality_report_id = 1;
+    // Packet type of the connection
+    // Original type: uint8_t
+    // Default: BQR_PACKET_TYPE_UNKNOWN
+    optional android.bluetooth.hci.BqrPacketTypeEnum packet_types = 2;
+    // Connection handle of the connection
+    // Original type: uint16_t
+    optional int32 connection_handle = 3;
+    // Performing Role for the connection
+    // Original type: uint8_t
+    optional int32 connection_role = 4;
+    // Current Transmit Power Level for the connection. This value is the same as the controller's
+    // response to the HCI_Read_Transmit_Power_Level HCI command
+    // Original type: uint8_t
+    optional int32 tx_power_level = 5;
+    // Received Signal Strength Indication (RSSI) value for the connection. This value is an
+    // absolute receiver signal strength value
+    // Original type: int8_t
+    optional int32 rssi = 6;
+    // Signal-to-Noise Ratio (SNR) value for the connection. It is the average SNR of all the
+    // channels used by the link currently
+    // Original type: uint8_t
+    optional int32 snr = 7;
+    // Indicates the number of unused channels in AFH_channel_map
+    // Original type: uint8_t
+    optional int32 unused_afh_channel_count = 8;
+    // Indicates the number of the channels which are interfered and quality is bad but are still
+    // selected for AFH
+    // Original type: uint8_t
+    optional int32 afh_select_unideal_channel_count = 9;
+    // Current Link Supervision Timeout Setting
+    // Unit: N * 0.3125 ms (1 Bluetooth Clock)
+    // Original type: uint16_t
+    optional int32 lsto = 10;
+    // Piconet Clock for the specified Connection_Handle. This value is the same as the controller's
+    // response to HCI_Read_Clock HCI command with the parameter "Which_Clock" of
+    // 0x01 (Piconet Clock)
+    // Unit: N * 0.3125 ms (1 Bluetooth Clock)
+    // Original type: uint32_t
+    optional int64 connection_piconet_clock = 11;
+    // The count of retransmission
+    // Original type: uint32_t
+    optional int64 retransmission_count = 12;
+    // The count of no RX
+    // Original type: uint32_t
+    optional int64 no_rx_count = 13;
+    // The count of NAK (Negative Acknowledge)
+    // Original type: uint32_t
+    optional int64 nak_count = 14;
+    // Controller timestamp of last TX ACK
+    // Unit: N * 0.3125 ms (1 Bluetooth Clock)
+    // Original type: uint32_t
+    optional int64 last_tx_ack_timestamp = 15;
+    // The count of Flow-off (STOP)
+    // Original type: uint32_t
+    optional int64 flow_off_count = 16;
+    // Controller timestamp of last Flow-on (GO)
+    // Unit: N * 0.3125 ms (1 Bluetooth Clock)
+    // Original type: uint32_t
+    optional int64 last_flow_on_timestamp = 17;
+    // Buffer overflow count (how many bytes of TX data are dropped) since the last event
+    // Original type: uint32_t
+    optional int64 buffer_overflow_bytes = 18;
+    // Buffer underflow count (in byte) since last event
+    // Original type: uint32_t
+    optional int64 buffer_underflow_bytes = 19;
+}
+
+/**
+ * Logs when a Bluetooth device's manufacturer information is learnt by the Bluetooth stack
+ *
+ * Notes:
+ * - Each event can be partially filled as we might learn different pieces of device
+ *   information at different time
+ * - Multiple device info events can be combined to give more complete picture
+ * - When multiple device info events tries to describe the same information, the
+ *   later one wins
+ *
+ * Logged from:
+ *     packages/apps/Bluetooth
+ */
+message BluetoothManufacturerInfoReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Where is this device info obtained from
+    optional android.bluetooth.DeviceInfoSrcEnum source_type = 2;
+    // Name of the data source
+    // For EXTERNAL: package name of the data source
+    // For INTERNAL: null for general case, component name otherwise
+    optional string source_name = 3;
+    // Name of the manufacturer of this device
+    optional string manufacturer = 4;
+    // Model of this device
+    optional string model = 5;
+    // Hardware version of this device
+    optional string hardware_version = 6;
+    // Software version of this device
+    optional string software_version = 7;
+}
+
+/**
+ * Logs when we receive Bluetooth Read Remote Version Information Complete Event from the remote
+ * device, as documented by the Bluetooth Core HCI specification
+ * Reference: https://www.bluetooth.com/specifications/bluetooth-core-specification
+ * Vol 2, Part E, Page 1118
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothRemoteVersionInfoReported {
+    // Connection handle of the connection
+    // Original type: uint16_t
+    optional int32 connection_handle = 1;
+    // HCI command status code
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum hci_status = 2;
+    // 1 byte Version of current LMP in the remote controller
+    optional int32 lmp_version = 3;
+    // 2 bytes LMP manufacturer code of the remote controller
+    // https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers
+    optional int32 lmp_manufacturer_code = 4;
+    // 4 bytes subversion of the LMP in the remote controller
+    optional int32 lmp_subversion = 5;
+}
+
+/**
+ * Logs when certain Bluetooth SDP attributes are discovered
+ * Constant definitions are from:
+ *     https://www.bluetooth.com/specifications/assigned-numbers/service-discovery
+ *
+ * Current logged attributes:
+ * - BluetoothProfileDescriptorList
+ * - Supported Features Bitmask
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothSdpAttributeReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Short form UUIDs used to identify Bluetooth protocols, profiles, and service classes
+    // Original type: uint16_t
+    optional int32 protocol_uuid = 2;
+    // Short form UUIDs used to identify Bluetooth SDP attribute types
+    // Original type: uint16_t
+    optional int32 attribute_id = 3;
+    // Attribute value for the particular attribute
+    optional bytes attribute_value = 4 [(android.os.statsd.log_mode) = MODE_BYTES];
+}
+
+/**
+ * Logs when bond state of a Bluetooth device changes
+ *
+ * Logged from:
+ *     frameworks/base/core/java/android/bluetooth/BluetoothDevice.java
+ *     packages/apps/Bluetooth/src/com/android/bluetooth/btservice/BondStateMachine.java
+ */
+message BluetoothBondStateChanged {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Preferred transport type to remote dual mode device
+    // Default: TRANSPORT_AUTO means no preference
+    optional android.bluetooth.TransportTypeEnum transport = 2;
+    // The type of this Bluetooth device (Classic, LE, or Dual mode)
+    // Default: UNKNOWN
+    optional android.bluetooth.DeviceTypeEnum type = 3;
+    // Current bond state (NONE, BONDING, BONDED)
+    // Default: BOND_STATE_UNKNOWN
+    optional android.bluetooth.BondStateEnum bond_state = 4;
+    // Bonding sub state
+    // Default: BOND_SUB_STATE_UNKNOWN
+    optional android.bluetooth.BondSubStateEnum bonding_sub_state = 5;
+    // Unbond Reason
+    // Default: UNBOND_REASON_UNKNOWN
+    optional android.bluetooth.UnbondReasonEnum unbond_reason = 6;
+}
+
+/**
+ * Logs there is an event related Bluetooth classic pairing
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothClassicPairingEventReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // Connection handle of this connection if available
+    // Range: 0x0000 - 0x0EFF (12 bits)
+    // Default: 0xFFFF if the handle is unknown
+    optional int32 connection_handle = 2;
+    // HCI command associated with this event
+    // Default: CMD_UNKNOWN
+    optional android.bluetooth.hci.CommandEnum hci_cmd = 3;
+    // HCI event associated with this event
+    // Default: EVT_UNKNOWN
+    optional android.bluetooth.hci.EventEnum hci_event = 4;
+    // HCI command status code if this is triggerred by hci_cmd
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum cmd_status = 5;
+    // HCI reason code associated with this event
+    // Default: STATUS_UNKNOWN
+    optional android.bluetooth.hci.StatusEnum reason_code = 6;
+}
+
+/**
+ * Logs when there is an event related to Bluetooth Security Manager Protocol (SMP)
+ *
+ * Logged from:
+ *     system/bt
+ */
+message BluetoothSmpPairingEventReported {
+    // An identifier that can be used to match events for this device.
+    // Currently, this is a salted hash of the MAC address of this Bluetooth device.
+    // Salt: Randomly generated 256 bit value
+    // Hash algorithm: HMAC-SHA256
+    // Size: 32 byte
+    // Default: null or empty if the device identifier is not known
+    optional bytes obfuscated_id = 1 [(android.os.statsd.log_mode) = MODE_BYTES];
+    // SMP command sent or received over L2CAP
+    // Default: CMD_UNKNOWN
+    optional android.bluetooth.smp.CommandEnum smp_command = 2;
+    // Whether this command is sent or received
+    // Default: DIRECTION_UNKNOWN
+    optional android.bluetooth.DirectionEnum direction = 3;
+    // SMP failure reason code
+    // Default: PAIRING_FAIL_REASON_DEFAULT
+    optional android.bluetooth.smp.PairingFailReasonEnum smp_fail_reason = 4;
+}
 
 /**
  * Logs when something is plugged into or removed from the USB-C connector.
@@ -2236,3 +2794,138 @@
     // See definition in data_stall_event.proto.
     optional com.android.server.connectivity.DnsEvent dns_event = 6 [(log_mode) = MODE_BYTES];
 }
+
+/**
+ * Logs when a NFC device's error occurred.
+ * Logged from:
+ *     system/nfc/src/nfc/nfc/nfc_ncif.cc
+ *     packages/apps/Nfc/src/com/android/nfc/cardemulation/AidRoutingManager.java
+ */
+message NfcErrorOccurred {
+    enum Type {
+        UNKNOWN = 0;
+        CMD_TIMEOUT = 1;
+        ERROR_NOTIFICATION = 2;
+        AID_OVERFLOW = 3;
+    }
+    optional Type type = 1;
+    // If it's nci cmd timeout, log the timeout command.
+    optional uint32 nci_cmd = 2;
+
+    optional uint32 error_ntf_status_code = 3;
+}
+
+/**
+ * Logs when a NFC device's state changed event
+ * Logged from:
+ *     packages/apps/Nfc/src/com/android/nfc/NfcService.java
+ */
+message NfcStateChanged {
+    enum State {
+        UNKNOWN = 0;
+        OFF = 1;
+        ON = 2;
+        ON_LOCKED = 3; // Secure Nfc enabled.
+        CRASH_RESTART = 4; // NfcService watchdog timeout restart.
+    }
+    optional State state = 1;
+}
+
+/**
+ * Logs when a NFC Beam Transaction occurred.
+ * Logged from:
+ *     packages/apps/Nfc/src/com/android/nfc/P2pLinkManager.java
+ */
+message NfcBeamOccurred {
+    enum Operation {
+        UNKNOWN = 0;
+        SEND = 1;
+        RECEIVE = 2;
+    }
+    optional Operation operation = 1;
+}
+
+/**
+ * Logs when a NFC Card Emulation Transaction occurred.
+ * Logged from:
+ *     packages/apps/Nfc/src/com/android/nfc/cardemulation/HostEmulationManager.java
+ *     packages/apps/Nfc/src/com/android/nfc/cardemulation/HostNfcFEmulationManager.java
+ */
+message NfcCardemulationOccurred {
+    enum Category {
+        UNKNOWN = 0;
+        HCE_PAYMENT = 1;
+        HCE_OTHER = 2;
+        OFFHOST = 3;
+    }
+    // Transaction belongs to HCE payment or HCE other category, or offhost.
+    optional Category category = 1;
+    // SeName from transaction: SIMx, eSEx, HCE, HCEF.
+    optional string se_name = 2;
+}
+
+/**
+ * Logs when a NFC Tag event occurred.
+ * Logged from:
+ *     packages/apps/Nfc/src/com/android/nfc/NfcDispatcher.java
+ */
+message NfcTagOccurred {
+    enum Type {
+        UNKNOWN = 0;
+        URL = 1;
+        BT_PAIRING = 2;
+        PROVISION = 3;
+        WIFI_CONNECT = 4;
+        APP_LAUNCH = 5;
+        OTHERS = 6;
+    }
+    optional Type type = 1;
+}
+
+/**
+ * Logs when Hce transaction triggered
+ * Logged from:
+ *     system/nfc/src/nfc/nfc/nfc_ncif.cc
+ */
+message NfcHceTransactionOccurred {
+    // The latency period(in microseconds) it took for the first HCE data
+    // exchange.
+    optional uint32 latency_micros = 1;
+}
+
+/**
+ * Logs when SecureElement state event changed
+ * Logged from:
+ *     packages/apps/SecureElement/src/com/android/se/Terminal.java
+ */
+message SeStateChanged {
+    enum State {
+        UNKNOWN = 0;
+        INITIALIZED = 1;
+        DISCONNECTED = 2;
+        CONNECTED = 3;
+        HALCRASH = 4;
+    }
+    optional State state = 1;
+
+    optional string state_change_reason = 2;
+    // SIMx or eSEx.
+    optional string terminal = 3;
+}
+
+/**
+ * Logs when Omapi API used
+ * Logged from:
+ *     packages/apps/SecureElement/src/com/android/se/Terminal.java
+ */
+message SeOmapiReported {
+    enum Operation {
+        UNKNOWN = 0;
+        OPEN_CHANNEL = 1;
+    }
+    optional Operation operation = 1;
+    // SIMx or eSEx.
+    optional string terminal = 2;
+
+    optional string package_name = 3;
+}
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 4f17447..af451c2 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -72,9 +72,7 @@
 import android.hardware.display.DisplayManagerGlobal;
 import android.net.ConnectivityManager;
 import android.net.IConnectivityManager;
-import android.net.Network;
 import android.net.Proxy;
-import android.net.ProxyInfo;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Binder;
@@ -1005,15 +1003,10 @@
             NetworkEventDispatcher.getInstance().onNetworkConfigurationChanged();
         }
 
-        public void setHttpProxy(String host, String port, String exclList, Uri pacFileUrl) {
+        public void updateHttpProxy() {
             final ConnectivityManager cm = ConnectivityManager.from(
                     getApplication() != null ? getApplication() : getSystemContext());
-            final Network network = cm.getBoundNetworkForProcess();
-            if (network != null) {
-                Proxy.setHttpProxySystemProperty(cm.getDefaultProxy());
-            } else {
-                Proxy.setHttpProxySystemProperty(host, port, exclList, pacFileUrl);
-            }
+            Proxy.setHttpProxySystemProperty(cm.getDefaultProxy());
         }
 
         public void processInBackground() {
@@ -5850,8 +5843,7 @@
             // crash if we can't get it.
             final IConnectivityManager service = IConnectivityManager.Stub.asInterface(b);
             try {
-                final ProxyInfo proxyInfo = service.getProxyForNetwork(null);
-                Proxy.setHttpProxySystemProperty(proxyInfo);
+                Proxy.setHttpProxySystemProperty(service.getProxyForNetwork(null));
             } catch (RemoteException e) {
                 Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
                 throw e.rethrowFromSystemServer();
diff --git a/core/java/android/app/IApplicationThread.aidl b/core/java/android/app/IApplicationThread.aidl
index ae9b83e..cbd85f5 100644
--- a/core/java/android/app/IApplicationThread.aidl
+++ b/core/java/android/app/IApplicationThread.aidl
@@ -99,8 +99,7 @@
     void dumpActivity(in ParcelFileDescriptor fd, IBinder servicetoken, in String prefix,
             in String[] args);
     void clearDnsCache();
-    void setHttpProxy(in String proxy, in String port, in String exclList,
-            in Uri pacFileUrl);
+    void updateHttpProxy();
     void setCoreSettings(in Bundle coreSettings);
     void updatePackageCompatibilityInfo(in String pkg, in CompatibilityInfo info);
     void scheduleTrimMemory(int level);
diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index d2f2468..b2951df 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -84,6 +84,7 @@
 import android.net.IEthernetManager;
 import android.net.IIpMemoryStore;
 import android.net.IIpSecService;
+import android.net.INetd;
 import android.net.INetworkPolicyManager;
 import android.net.IpMemoryStore;
 import android.net.IpSecManager;
@@ -288,6 +289,14 @@
                 return new ConnectivityManager(context, service);
             }});
 
+        registerService(Context.NETD_SERVICE, INetd.class, new StaticServiceFetcher<INetd>() {
+            @Override
+            public INetd createService() throws ServiceNotFoundException {
+                return INetd.Stub.asInterface(
+                        ServiceManager.getServiceOrThrow(Context.NETD_SERVICE));
+            }
+        });
+
         registerService(Context.NETWORK_STACK_SERVICE, NetworkStack.class,
                 new StaticServiceFetcher<NetworkStack>() {
                     @Override
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 1b08ecd..18a006f 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -4464,11 +4464,16 @@
     }
 
     /**
+     * Service-specific error code used in implementation of {@code setAlwaysOnVpnPackage} methods.
+     * @hide
+     */
+    public static final int ERROR_VPN_PACKAGE_NOT_FOUND = 1;
+
+    /**
      * Called by a device or profile owner to configure an always-on VPN connection through a
      * specific application for the current user. This connection is automatically granted and
      * persisted after a reboot.
-     * <p>
-     * To support the always-on feature, an app must
+     * <p> To support the always-on feature, an app must
      * <ul>
      *     <li>declare a {@link android.net.VpnService} in its manifest, guarded by
      *         {@link android.Manifest.permission#BIND_VPN_SERVICE};</li>
@@ -4477,25 +4482,61 @@
      *         {@link android.net.VpnService#SERVICE_META_DATA_SUPPORTS_ALWAYS_ON}.</li>
      * </ul>
      * The call will fail if called with the package name of an unsupported VPN app.
+     * <p> Enabling lockdown via {@code lockdownEnabled} argument carries the risk that any failure
+     * of the VPN provider could break networking for all apps.
      *
      * @param vpnPackage The package name for an installed VPN app on the device, or {@code null} to
      *        remove an existing always-on VPN configuration.
      * @param lockdownEnabled {@code true} to disallow networking when the VPN is not connected or
-     *        {@code false} otherwise. This carries the risk that any failure of the VPN provider
-     *        could break networking for all apps. This has no effect when clearing.
+     *        {@code false} otherwise. This has no effect when clearing.
      * @throws SecurityException if {@code admin} is not a device or a profile owner.
      * @throws NameNotFoundException if {@code vpnPackage} is not installed.
      * @throws UnsupportedOperationException if {@code vpnPackage} exists but does not support being
      *         set as always-on, or if always-on VPN is not available.
+     * @see #setAlwaysOnVpnPackage(ComponentName, String, boolean, List)
      */
     public void setAlwaysOnVpnPackage(@NonNull ComponentName admin, @Nullable String vpnPackage,
-            boolean lockdownEnabled)
-            throws NameNotFoundException, UnsupportedOperationException {
+            boolean lockdownEnabled) throws NameNotFoundException {
+        setAlwaysOnVpnPackage(admin, vpnPackage, lockdownEnabled, Collections.emptyList());
+    }
+
+    /**
+     * A version of {@link #setAlwaysOnVpnPackage(ComponentName, String, boolean)} that allows the
+     * admin to specify a set of apps that should be able to access the network directly when VPN
+     * is not connected. When VPN connects these apps switch over to VPN if allowed to use that VPN.
+     * System apps can always bypass VPN.
+     * <p> Note that the system doesn't update the whitelist when packages are installed or
+     * uninstalled, the admin app must call this method to keep the list up to date.
+     *
+     * @param vpnPackage package name for an installed VPN app on the device, or {@code null}
+     *         to remove an existing always-on VPN configuration
+     * @param lockdownEnabled {@code true} to disallow networking when the VPN is not connected or
+     *         {@code false} otherwise. This has no effect when clearing.
+     * @param lockdownWhitelist Packages that will be able to access the network directly when VPN
+     *         is in lockdown mode but not connected. Has no effect when clearing.
+     * @throws SecurityException if {@code admin} is not a device or a profile
+     *         owner.
+     * @throws NameNotFoundException if {@code vpnPackage} or one of
+     *         {@code lockdownWhitelist} is not installed.
+     * @throws UnsupportedOperationException if {@code vpnPackage} exists but does
+     *         not support being set as always-on, or if always-on VPN is not
+     *         available.
+     */
+    public void setAlwaysOnVpnPackage(@NonNull ComponentName admin, @Nullable String vpnPackage,
+            boolean lockdownEnabled, @Nullable List<String> lockdownWhitelist)
+            throws NameNotFoundException {
         throwIfParentInstance("setAlwaysOnVpnPackage");
         if (mService != null) {
             try {
-                if (!mService.setAlwaysOnVpnPackage(admin, vpnPackage, lockdownEnabled)) {
-                    throw new NameNotFoundException(vpnPackage);
+                mService.setAlwaysOnVpnPackage(
+                        admin, vpnPackage, lockdownEnabled, lockdownWhitelist);
+            } catch (ServiceSpecificException e) {
+                switch (e.errorCode) {
+                    case ERROR_VPN_PACKAGE_NOT_FOUND:
+                        throw new NameNotFoundException(e.getMessage());
+                    default:
+                        throw new RuntimeException(
+                                "Unknown error setting always-on VPN: " + e.errorCode, e);
                 }
             } catch (RemoteException e) {
                 throw e.rethrowFromSystemServer();
@@ -4504,6 +4545,51 @@
     }
 
     /**
+     * Called by device or profile owner to query whether current always-on VPN is configured in
+     * lockdown mode. Returns {@code false} when no always-on configuration is set.
+     *
+     * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
+     *
+     * @throws SecurityException if {@code admin} is not a device or a profile owner.
+     *
+     * @see #setAlwaysOnVpnPackage(ComponentName, String, boolean)
+     */
+    public boolean isAlwaysOnVpnLockdownEnabled(@NonNull ComponentName admin) {
+        throwIfParentInstance("isAlwaysOnVpnLockdownEnabled");
+        if (mService != null) {
+            try {
+                return mService.isAlwaysOnVpnLockdownEnabled(admin);
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Called by device or profile owner to query the list of packages that are allowed to access
+     * the network directly when always-on VPN is in lockdown mode but not connected. Returns
+     * {@code null} when always-on VPN is not active or not in lockdown mode.
+     *
+     * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
+     *
+     * @throws SecurityException if {@code admin} is not a device or a profile owner.
+     *
+     * @see #setAlwaysOnVpnPackage(ComponentName, String, boolean, List)
+     */
+    public @Nullable List<String> getAlwaysOnVpnLockdownWhitelist(@NonNull ComponentName admin) {
+        throwIfParentInstance("getAlwaysOnVpnLockdownWhitelist");
+        if (mService != null) {
+            try {
+                return mService.getAlwaysOnVpnLockdownWhitelist(admin);
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+        return null;
+    }
+
+    /**
      * Called by a device or profile owner to read the name of the package administering an
      * always-on VPN connection for the current user. If there is no such package, or the always-on
      * VPN is provided by the system instead of by an application, {@code null} will be returned.
diff --git a/core/java/android/app/admin/IDevicePolicyManager.aidl b/core/java/android/app/admin/IDevicePolicyManager.aidl
index 37508cd..0046302 100644
--- a/core/java/android/app/admin/IDevicePolicyManager.aidl
+++ b/core/java/android/app/admin/IDevicePolicyManager.aidl
@@ -182,8 +182,10 @@
     void setCertInstallerPackage(in ComponentName who, String installerPackage);
     String getCertInstallerPackage(in ComponentName who);
 
-    boolean setAlwaysOnVpnPackage(in ComponentName who, String vpnPackage, boolean lockdown);
+    boolean setAlwaysOnVpnPackage(in ComponentName who, String vpnPackage, boolean lockdown, in List<String> lockdownWhitelist);
     String getAlwaysOnVpnPackage(in ComponentName who);
+    boolean isAlwaysOnVpnLockdownEnabled(in ComponentName who);
+    List<String> getAlwaysOnVpnLockdownWhitelist(in ComponentName who);
 
     void addPersistentPreferredActivity(in ComponentName admin, in IntentFilter filter, in ComponentName activity);
     void clearPackagePersistentPreferredActivities(in ComponentName admin, String packageName);
diff --git a/core/java/android/bluetooth/BluetoothDevice.java b/core/java/android/bluetooth/BluetoothDevice.java
index 7a29c27..2803856 100644
--- a/core/java/android/bluetooth/BluetoothDevice.java
+++ b/core/java/android/bluetooth/BluetoothDevice.java
@@ -532,6 +532,28 @@
             "android.bluetooth.device.action.CONNECTION_ACCESS_CANCEL";
 
     /**
+     * Intent to broadcast silence mode changed.
+     * Alway contains the extra field {@link #EXTRA_DEVICE}
+     * Alway contains the extra field {@link #EXTRA_SILENCE_ENABLED}
+     *
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    @SystemApi
+    public static final String ACTION_SILENCE_MODE_CHANGED =
+            "android.bluetooth.device.action.SILENCE_MODE_CHANGED";
+
+    /**
+     * Used as an extra field in {@link #ACTION_SILENCE_MODE_CHANGED} intent,
+     * contains whether device is in silence mode as boolean.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String EXTRA_SILENCE_ENABLED =
+            "android.bluetooth.device.extra.SILENCE_ENABLED";
+
+    /**
      * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REQUEST} intent.
      *
      * @hide
@@ -1592,6 +1614,70 @@
     }
 
     /**
+     * Set the Bluetooth device silence mode.
+     *
+     * When the {@link BluetoothDevice} enters silence mode, and the {@link BluetoothDevice}
+     * is an active device (for A2DP or HFP), the active device for that profile
+     * will be set to null.
+     * If the {@link BluetoothDevice} exits silence mode while the A2DP or HFP
+     * active device is null, the {@link BluetoothDevice} will be set as the
+     * active device for that profile.
+     * If the {@link BluetoothDevice} is disconnected, it exits silence mode.
+     * If the {@link BluetoothDevice} is set as the active device for A2DP or
+     * HFP, while silence mode is enabled, then the device will exit silence mode.
+     * If the {@link BluetoothDevice} is in silence mode, AVRCP position change
+     * event and HFP AG indicators will be disabled.
+     * If the {@link BluetoothDevice} is not connected with A2DP or HFP, it cannot
+     * enter silence mode.
+     *
+     * <p> Requires {@link android.Manifest.permission#BLUETOOTH_PRIVILEGED}.
+     *
+     * @param silence true to enter silence mode, false to exit
+     * @return true on success, false on error.
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
+    public boolean setSilenceMode(boolean silence) {
+        final IBluetooth service = sService;
+        if (service == null) {
+            return false;
+        }
+        try {
+            if (getSilenceMode() == silence) {
+                return true;
+            }
+            return service.setSilenceMode(this, silence);
+        } catch (RemoteException e) {
+            Log.e(TAG, "setSilenceMode fail", e);
+            return false;
+        }
+    }
+
+    /**
+     * Get the device silence mode status
+     *
+     * <p> Requires {@link android.Manifest.permission#BLUETOOTH_PRIVILEGED}.
+     *
+     * @return true on device in silence mode, otherwise false.
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
+    public boolean getSilenceMode() {
+        final IBluetooth service = sService;
+        if (service == null) {
+            return false;
+        }
+        try {
+            return service.getSilenceMode(this);
+        } catch (RemoteException e) {
+            Log.e(TAG, "getSilenceMode fail", e);
+            return false;
+        }
+    }
+
+    /**
      * Sets whether the phonebook access is allowed to this device.
      * <p>Requires {@link android.Manifest.permission#BLUETOOTH_PRIVILEGED}.
      *
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 29161cc..8959540 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -3506,6 +3506,16 @@
 
     /**
      * Use with {@link #getSystemService(String)} to retrieve a
+     * {@link android.net.INetd} for communicating with the network stack
+     * @hide
+     * @see #getSystemService(String)
+     * @hide
+     */
+    @SystemApi
+    public static final String NETD_SERVICE = "netd";
+
+    /**
+     * Use with {@link #getSystemService(String)} to retrieve a
      * {@link NetworkStack} for communicating with the network stack
      * @hide
      * @see #getSystemService(String)
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 5bb24ba..3bae12e 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -1014,20 +1014,54 @@
      *                   to remove an existing always-on VPN configuration.
      * @param lockdownEnabled {@code true} to disallow networking when the VPN is not connected or
      *        {@code false} otherwise.
+     * @param lockdownWhitelist The list of packages that are allowed to access network directly
+     *         when VPN is in lockdown mode but is not running. Non-existent packages are ignored so
+     *         this method must be called when a package that should be whitelisted is installed or
+     *         uninstalled.
      * @return {@code true} if the package is set as always-on VPN controller;
      *         {@code false} otherwise.
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONTROL_ALWAYS_ON_VPN)
     public boolean setAlwaysOnVpnPackageForUser(int userId, @Nullable String vpnPackage,
-            boolean lockdownEnabled) {
+            boolean lockdownEnabled, @Nullable List<String> lockdownWhitelist) {
         try {
-            return mService.setAlwaysOnVpnPackage(userId, vpnPackage, lockdownEnabled);
+            return mService.setAlwaysOnVpnPackage(
+                    userId, vpnPackage, lockdownEnabled, lockdownWhitelist);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
     }
 
     /**
+     * Configures an always-on VPN connection through a specific application.
+     * This connection is automatically granted and persisted after a reboot.
+     *
+     * <p>The designated package should declare a {@link VpnService} in its
+     *    manifest guarded by {@link android.Manifest.permission.BIND_VPN_SERVICE},
+     *    otherwise the call will fail.
+     *
+     * @param userId The identifier of the user to set an always-on VPN for.
+     * @param vpnPackage The package name for an installed VPN app on the device, or {@code null}
+     *                   to remove an existing always-on VPN configuration.
+     * @param lockdownEnabled {@code true} to disallow networking when the VPN is not connected or
+     *        {@code false} otherwise.
+     * @return {@code true} if the package is set as always-on VPN controller;
+     *         {@code false} otherwise.
+     * @hide
+     */
+    @RequiresPermission(android.Manifest.permission.CONTROL_ALWAYS_ON_VPN)
+    public boolean setAlwaysOnVpnPackageForUser(int userId, @Nullable String vpnPackage,
+            boolean lockdownEnabled) {
+        try {
+            return mService.setAlwaysOnVpnPackage(
+                    userId, vpnPackage, lockdownEnabled, /* whitelist */ null);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+   /**
      * Returns the package name of the currently set always-on VPN application.
      * If there is no always-on VPN set, or the VPN is provided by the system instead
      * of by an app, {@code null} will be returned.
@@ -1036,6 +1070,7 @@
      *         or {@code null} if none is set.
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONTROL_ALWAYS_ON_VPN)
     public String getAlwaysOnVpnPackageForUser(int userId) {
         try {
             return mService.getAlwaysOnVpnPackage(userId);
@@ -1045,6 +1080,36 @@
     }
 
     /**
+     * @return whether always-on VPN is in lockdown mode.
+     *
+     * @hide
+     **/
+    @RequiresPermission(android.Manifest.permission.CONTROL_ALWAYS_ON_VPN)
+    public boolean isVpnLockdownEnabled(int userId) {
+        try {
+            return mService.isVpnLockdownEnabled(userId);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+
+    }
+
+    /**
+     * @return the list of packages that are allowed to access network when always-on VPN is in
+     * lockdown mode but not connected. Returns {@code null} when VPN lockdown is not active.
+     *
+     * @hide
+     **/
+    @RequiresPermission(android.Manifest.permission.CONTROL_ALWAYS_ON_VPN)
+    public List<String> getVpnLockdownWhitelist(int userId) {
+        try {
+            return mService.getVpnLockdownWhitelist(userId);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
      * Returns details about the currently active default data network
      * for a given uid.  This is for internal use only to avoid spying
      * other apps.
diff --git a/core/java/android/net/DhcpResults.java b/core/java/android/net/DhcpResults.java
index b5d8226..6f9e65f 100644
--- a/core/java/android/net/DhcpResults.java
+++ b/core/java/android/net/DhcpResults.java
@@ -17,24 +17,40 @@
 package android.net;
 
 import android.annotation.UnsupportedAppUsage;
-import android.net.NetworkUtils;
+import android.net.shared.InetAddressUtils;
 import android.os.Parcel;
+import android.os.Parcelable;
 import android.text.TextUtils;
 import android.util.Log;
 
 import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
 
 /**
  * A simple object for retrieving the results of a DHCP request.
  * Optimized (attempted) for that jni interface
- * TODO - remove when DhcpInfo is deprecated.  Move the remaining api to LinkProperties.
+ * TODO: remove this class and replace with other existing constructs
  * @hide
  */
-public class DhcpResults extends StaticIpConfiguration {
+public final class DhcpResults implements Parcelable {
     private static final String TAG = "DhcpResults";
 
     @UnsupportedAppUsage
+    public LinkAddress ipAddress;
+
+    @UnsupportedAppUsage
+    public InetAddress gateway;
+
+    @UnsupportedAppUsage
+    public final ArrayList<InetAddress> dnsServers = new ArrayList<>();
+
+    @UnsupportedAppUsage
+    public String domains;
+
+    @UnsupportedAppUsage
     public Inet4Address serverAddress;
 
     /** Vendor specific information (from RFC 2132). */
@@ -48,23 +64,38 @@
     @UnsupportedAppUsage
     public int mtu;
 
-    @UnsupportedAppUsage
     public DhcpResults() {
         super();
     }
 
-    @UnsupportedAppUsage
+    /**
+     * Create a {@link StaticIpConfiguration} based on the DhcpResults.
+     */
+    public StaticIpConfiguration toStaticIpConfiguration() {
+        final StaticIpConfiguration s = new StaticIpConfiguration();
+        // All these except dnsServers are immutable, so no need to make copies.
+        s.setIpAddress(ipAddress);
+        s.setGateway(gateway);
+        for (InetAddress addr : dnsServers) {
+            s.addDnsServer(addr);
+        }
+        s.setDomains(domains);
+        return s;
+    }
+
     public DhcpResults(StaticIpConfiguration source) {
-        super(source);
+        if (source != null) {
+            ipAddress = source.getIpAddress();
+            gateway = source.getGateway();
+            dnsServers.addAll(source.getDnsServers());
+            domains = source.getDomains();
+        }
     }
 
     /** copy constructor */
-    @UnsupportedAppUsage
     public DhcpResults(DhcpResults source) {
-        super(source);
-
+        this(source == null ? null : source.toStaticIpConfiguration());
         if (source != null) {
-            // All these are immutable, so no need to make copies.
             serverAddress = source.serverAddress;
             vendorInfo = source.vendorInfo;
             leaseDuration = source.leaseDuration;
@@ -73,6 +104,14 @@
     }
 
     /**
+     * @see StaticIpConfiguration#getRoutes(String)
+     * @hide
+     */
+    public List<RouteInfo> getRoutes(String iface) {
+        return toStaticIpConfiguration().getRoutes(iface);
+    }
+
+    /**
      * Test if this DHCP lease includes vendor hint that network link is
      * metered, and sensitive to heavy data transfers.
      */
@@ -85,7 +124,11 @@
     }
 
     public void clear() {
-        super.clear();
+        ipAddress = null;
+        gateway = null;
+        dnsServers.clear();
+        domains = null;
+        serverAddress = null;
         vendorInfo = null;
         leaseDuration = 0;
         mtu = 0;
@@ -111,20 +154,20 @@
 
         DhcpResults target = (DhcpResults)obj;
 
-        return super.equals((StaticIpConfiguration) obj) &&
-                Objects.equals(serverAddress, target.serverAddress) &&
-                Objects.equals(vendorInfo, target.vendorInfo) &&
-                leaseDuration == target.leaseDuration &&
-                mtu == target.mtu;
+        return toStaticIpConfiguration().equals(target.toStaticIpConfiguration())
+                && Objects.equals(serverAddress, target.serverAddress)
+                && Objects.equals(vendorInfo, target.vendorInfo)
+                && leaseDuration == target.leaseDuration
+                && mtu == target.mtu;
     }
 
-    /** Implement the Parcelable interface */
+    /**
+     * Implement the Parcelable interface
+     */
     public static final Creator<DhcpResults> CREATOR =
         new Creator<DhcpResults>() {
             public DhcpResults createFromParcel(Parcel in) {
-                DhcpResults dhcpResults = new DhcpResults();
-                readFromParcel(dhcpResults, in);
-                return dhcpResults;
+                return readFromParcel(in);
             }
 
             public DhcpResults[] newArray(int size) {
@@ -134,26 +177,33 @@
 
     /** Implement the Parcelable interface */
     public void writeToParcel(Parcel dest, int flags) {
-        super.writeToParcel(dest, flags);
+        toStaticIpConfiguration().writeToParcel(dest, flags);
         dest.writeInt(leaseDuration);
         dest.writeInt(mtu);
-        NetworkUtils.parcelInetAddress(dest, serverAddress, flags);
+        InetAddressUtils.parcelInetAddress(dest, serverAddress, flags);
         dest.writeString(vendorInfo);
     }
 
-    private static void readFromParcel(DhcpResults dhcpResults, Parcel in) {
-        StaticIpConfiguration.readFromParcel(dhcpResults, in);
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    private static DhcpResults readFromParcel(Parcel in) {
+        final StaticIpConfiguration s = StaticIpConfiguration.CREATOR.createFromParcel(in);
+        final DhcpResults dhcpResults = new DhcpResults(s);
         dhcpResults.leaseDuration = in.readInt();
         dhcpResults.mtu = in.readInt();
-        dhcpResults.serverAddress = (Inet4Address) NetworkUtils.unparcelInetAddress(in);
+        dhcpResults.serverAddress = (Inet4Address) InetAddressUtils.unparcelInetAddress(in);
         dhcpResults.vendorInfo = in.readString();
+        return dhcpResults;
     }
 
     // Utils for jni population - false on success
     // Not part of the superclass because they're only used by the JNI iterface to the DHCP daemon.
     public boolean setIpAddress(String addrString, int prefixLength) {
         try {
-            Inet4Address addr = (Inet4Address) NetworkUtils.numericToInetAddress(addrString);
+            Inet4Address addr = (Inet4Address) InetAddresses.parseNumericAddress(addrString);
             ipAddress = new LinkAddress(addr, prefixLength);
         } catch (IllegalArgumentException|ClassCastException e) {
             Log.e(TAG, "setIpAddress failed with addrString " + addrString + "/" + prefixLength);
@@ -164,7 +214,7 @@
 
     public boolean setGateway(String addrString) {
         try {
-            gateway = NetworkUtils.numericToInetAddress(addrString);
+            gateway = InetAddresses.parseNumericAddress(addrString);
         } catch (IllegalArgumentException e) {
             Log.e(TAG, "setGateway failed with addrString " + addrString);
             return true;
@@ -175,7 +225,7 @@
     public boolean addDns(String addrString) {
         if (TextUtils.isEmpty(addrString) == false) {
             try {
-                dnsServers.add(NetworkUtils.numericToInetAddress(addrString));
+                dnsServers.add(InetAddresses.parseNumericAddress(addrString));
             } catch (IllegalArgumentException e) {
                 Log.e(TAG, "addDns failed with addrString " + addrString);
                 return true;
@@ -184,25 +234,70 @@
         return false;
     }
 
-    public boolean setServerAddress(String addrString) {
-        try {
-            serverAddress = (Inet4Address) NetworkUtils.numericToInetAddress(addrString);
-        } catch (IllegalArgumentException|ClassCastException e) {
-            Log.e(TAG, "setServerAddress failed with addrString " + addrString);
-            return true;
-        }
-        return false;
+    public LinkAddress getIpAddress() {
+        return ipAddress;
+    }
+
+    public void setIpAddress(LinkAddress ipAddress) {
+        this.ipAddress = ipAddress;
+    }
+
+    public InetAddress getGateway() {
+        return gateway;
+    }
+
+    public void setGateway(InetAddress gateway) {
+        this.gateway = gateway;
+    }
+
+    public List<InetAddress> getDnsServers() {
+        return dnsServers;
+    }
+
+    /**
+     * Add a DNS server to this configuration.
+     */
+    public void addDnsServer(InetAddress server) {
+        dnsServers.add(server);
+    }
+
+    public String getDomains() {
+        return domains;
+    }
+
+    public void setDomains(String domains) {
+        this.domains = domains;
+    }
+
+    public Inet4Address getServerAddress() {
+        return serverAddress;
+    }
+
+    public void setServerAddress(Inet4Address addr) {
+        serverAddress = addr;
+    }
+
+    public int getLeaseDuration() {
+        return leaseDuration;
     }
 
     public void setLeaseDuration(int duration) {
         leaseDuration = duration;
     }
 
+    public String getVendorInfo() {
+        return vendorInfo;
+    }
+
     public void setVendorInfo(String info) {
         vendorInfo = info;
     }
 
-    public void setDomains(String newDomains) {
-        domains = newDomains;
+    public int getMtu() {
+        return mtu;
+    }
+
+    public void setMtu(int mtu) {
+        this.mtu = mtu;
     }
 }
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index e97060a..fd7360f 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -125,8 +125,11 @@
 
     boolean updateLockdownVpn();
     boolean isAlwaysOnVpnPackageSupported(int userId, String packageName);
-    boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown);
+    boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown,
+            in List<String> lockdownWhitelist);
     String getAlwaysOnVpnPackage(int userId);
+    boolean isVpnLockdownEnabled(int userId);
+    List<String> getVpnLockdownWhitelist(int userId);
 
     int checkMobileProvisioning(int suggestedTimeOutMs);
 
diff --git a/core/java/android/net/INetworkStackConnector.aidl b/core/java/android/net/INetworkStackConnector.aidl
index 8b64f1c..e052488 100644
--- a/core/java/android/net/INetworkStackConnector.aidl
+++ b/core/java/android/net/INetworkStackConnector.aidl
@@ -16,6 +16,7 @@
 package android.net;
 
 import android.net.INetworkMonitorCallbacks;
+import android.net.NetworkParcelable;
 import android.net.dhcp.DhcpServingParamsParcel;
 import android.net.dhcp.IDhcpServerCallbacks;
 import android.net.ip.IIpClientCallbacks;
@@ -24,6 +25,7 @@
 oneway interface INetworkStackConnector {
     void makeDhcpServer(in String ifName, in DhcpServingParamsParcel params,
         in IDhcpServerCallbacks cb);
-    void makeNetworkMonitor(int netId, String name, in INetworkMonitorCallbacks cb);
+    void makeNetworkMonitor(in NetworkParcelable network, String name,
+        in INetworkMonitorCallbacks cb);
     void makeIpClient(in String ifName, in IIpClientCallbacks callbacks);
 }
\ No newline at end of file
diff --git a/core/java/android/net/IpPrefix.java b/core/java/android/net/IpPrefix.java
index b996cda..175263f 100644
--- a/core/java/android/net/IpPrefix.java
+++ b/core/java/android/net/IpPrefix.java
@@ -104,6 +104,8 @@
      *
      * @hide
      */
+    @SystemApi
+    @TestApi
     public IpPrefix(String prefix) {
         // We don't reuse the (InetAddress, int) constructor because "error: call to this must be
         // first statement in constructor". We could factor out setting the member variables to an
diff --git a/core/java/android/net/LinkAddress.java b/core/java/android/net/LinkAddress.java
index fbd602c..8d779aa 100644
--- a/core/java/android/net/LinkAddress.java
+++ b/core/java/android/net/LinkAddress.java
@@ -176,6 +176,7 @@
      * @hide
      */
     @SystemApi
+    @TestApi
     public LinkAddress(InetAddress address, int prefixLength) {
         this(address, prefixLength, 0, 0);
         this.scope = scopeForUnicastAddress(address);
@@ -199,6 +200,7 @@
      * @hide
      */
     @SystemApi
+    @TestApi
     public LinkAddress(String address) {
         this(address, 0, 0);
         this.scope = scopeForUnicastAddress(this.address);
@@ -212,6 +214,8 @@
      * @param scope The address scope.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public LinkAddress(String address, int flags, int scope) {
         // This may throw an IllegalArgumentException; catching it is the caller's responsibility.
         // TODO: consider rejecting mapped IPv4 addresses such as "::ffff:192.0.2.5/24".
diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
index 6628701..42db0fd 100644
--- a/core/java/android/net/LinkProperties.java
+++ b/core/java/android/net/LinkProperties.java
@@ -287,7 +287,8 @@
      * @return true if {@code address} was added or updated, false otherwise.
      * @hide
      */
-    @UnsupportedAppUsage
+    @SystemApi
+    @TestApi
     public boolean addLinkAddress(LinkAddress address) {
         if (address == null) {
             return false;
@@ -315,6 +316,8 @@
      * @return true if the address was removed, false if it did not exist.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public boolean removeLinkAddress(LinkAddress toRemove) {
         int i = findLinkAddressIndex(toRemove);
         if (i >= 0) {
diff --git a/core/java/android/net/Network.java b/core/java/android/net/Network.java
index 2c831de..e04b5fc 100644
--- a/core/java/android/net/Network.java
+++ b/core/java/android/net/Network.java
@@ -123,6 +123,8 @@
     /**
      * @hide
      */
+    @SystemApi
+    @TestApi
     public Network(Network that) {
         this(that.netId, that.mPrivateDnsBypass);
     }
diff --git a/core/java/android/net/NetworkStack.java b/core/java/android/net/NetworkStack.java
index d277034..ac6bff0 100644
--- a/core/java/android/net/NetworkStack.java
+++ b/core/java/android/net/NetworkStack.java
@@ -104,10 +104,11 @@
      *
      * <p>The INetworkMonitor will be returned asynchronously through the provided callbacks.
      */
-    public void makeNetworkMonitor(Network network, String name, INetworkMonitorCallbacks cb) {
+    public void makeNetworkMonitor(
+            NetworkParcelable network, String name, INetworkMonitorCallbacks cb) {
         requestConnector(connector -> {
             try {
-                connector.makeNetworkMonitor(network.netId, name, cb);
+                connector.makeNetworkMonitor(network, name, cb);
             } catch (RemoteException e) {
                 e.rethrowFromSystemServer();
             }
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index 7f4d8cd1..07668a9 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -17,8 +17,9 @@
 package android.net;
 
 import android.annotation.UnsupportedAppUsage;
+import android.net.shared.Inet4AddressUtils;
 import android.os.Build;
-import android.os.Parcel;
+import android.system.ErrnoException;
 import android.util.Log;
 import android.util.Pair;
 
@@ -34,8 +35,6 @@
 import java.util.Locale;
 import java.util.TreeSet;
 
-import android.system.ErrnoException;
-
 /**
  * Native methods for managing network interfaces.
  *
@@ -172,119 +171,37 @@
             FileDescriptor fd) throws IOException;
 
     /**
-     * @see #intToInet4AddressHTL(int)
-     * @deprecated Use either {@link #intToInet4AddressHTH(int)}
-     *             or {@link #intToInet4AddressHTL(int)}
+     * @see Inet4AddressUtils#intToInet4AddressHTL(int)
+     * @deprecated Use either {@link Inet4AddressUtils#intToInet4AddressHTH(int)}
+     *             or {@link Inet4AddressUtils#intToInet4AddressHTL(int)}
      */
     @Deprecated
     @UnsupportedAppUsage
     public static InetAddress intToInetAddress(int hostAddress) {
-        return intToInet4AddressHTL(hostAddress);
+        return Inet4AddressUtils.intToInet4AddressHTL(hostAddress);
     }
 
     /**
-     * Convert a IPv4 address from an integer to an InetAddress (0x04030201 -> 1.2.3.4)
-     *
-     * <p>This method uses the higher-order int bytes as the lower-order IPv4 address bytes,
-     * which is an unusual convention. Consider {@link #intToInet4AddressHTH(int)} instead.
-     * @param hostAddress an int coding for an IPv4 address, where higher-order int byte is
-     *                    lower-order IPv4 address byte
-     */
-    public static Inet4Address intToInet4AddressHTL(int hostAddress) {
-        return intToInet4AddressHTH(Integer.reverseBytes(hostAddress));
-    }
-
-    /**
-     * Convert a IPv4 address from an integer to an InetAddress (0x01020304 -> 1.2.3.4)
-     * @param hostAddress an int coding for an IPv4 address
-     */
-    public static Inet4Address intToInet4AddressHTH(int hostAddress) {
-        byte[] addressBytes = { (byte) (0xff & (hostAddress >> 24)),
-                (byte) (0xff & (hostAddress >> 16)),
-                (byte) (0xff & (hostAddress >> 8)),
-                (byte) (0xff & hostAddress) };
-
-        try {
-            return (Inet4Address) InetAddress.getByAddress(addressBytes);
-        } catch (UnknownHostException e) {
-            throw new AssertionError();
-        }
-    }
-
-    /**
-     * @see #inet4AddressToIntHTL(Inet4Address)
-     * @deprecated Use either {@link #inet4AddressToIntHTH(Inet4Address)}
-     *             or {@link #inet4AddressToIntHTL(Inet4Address)}
+     * @see Inet4AddressUtils#inet4AddressToIntHTL(Inet4Address)
+     * @deprecated Use either {@link Inet4AddressUtils#inet4AddressToIntHTH(Inet4Address)}
+     *             or {@link Inet4AddressUtils#inet4AddressToIntHTL(Inet4Address)}
      */
     @Deprecated
     public static int inetAddressToInt(Inet4Address inetAddr)
             throws IllegalArgumentException {
-        return inet4AddressToIntHTL(inetAddr);
+        return Inet4AddressUtils.inet4AddressToIntHTL(inetAddr);
     }
 
     /**
-     * Convert an IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x01020304)
-     *
-     * <p>This conversion can help order IP addresses: considering the ordering
-     * 192.0.2.1 < 192.0.2.2 < ..., resulting ints will follow that ordering if read as unsigned
-     * integers with {@link Integer#toUnsignedLong}.
-     * @param inetAddr is an InetAddress corresponding to the IPv4 address
-     * @return the IP address as integer
-     */
-    public static int inet4AddressToIntHTH(Inet4Address inetAddr)
-            throws IllegalArgumentException {
-        byte [] addr = inetAddr.getAddress();
-        return ((addr[0] & 0xff) << 24) | ((addr[1] & 0xff) << 16)
-                | ((addr[2] & 0xff) << 8) | (addr[3] & 0xff);
-    }
-
-    /**
-     * Convert a IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x04030201)
-     *
-     * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
-     * which is an unusual convention. Consider {@link #inet4AddressToIntHTH(Inet4Address)} instead.
-     * @param inetAddr is an InetAddress corresponding to the IPv4 address
-     * @return the IP address as integer
-     */
-    public static int inet4AddressToIntHTL(Inet4Address inetAddr) {
-        return Integer.reverseBytes(inet4AddressToIntHTH(inetAddr));
-    }
-
-    /**
-     * @see #prefixLengthToV4NetmaskIntHTL(int)
-     * @deprecated Use either {@link #prefixLengthToV4NetmaskIntHTH(int)}
-     *             or {@link #prefixLengthToV4NetmaskIntHTL(int)}
+     * @see Inet4AddressUtils#prefixLengthToV4NetmaskIntHTL(int)
+     * @deprecated Use either {@link Inet4AddressUtils#prefixLengthToV4NetmaskIntHTH(int)}
+     *             or {@link Inet4AddressUtils#prefixLengthToV4NetmaskIntHTL(int)}
      */
     @Deprecated
     @UnsupportedAppUsage
     public static int prefixLengthToNetmaskInt(int prefixLength)
             throws IllegalArgumentException {
-        return prefixLengthToV4NetmaskIntHTL(prefixLength);
-    }
-
-    /**
-     * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0xffff8000)
-     * @return the IPv4 netmask as an integer
-     */
-    public static int prefixLengthToV4NetmaskIntHTH(int prefixLength)
-            throws IllegalArgumentException {
-        if (prefixLength < 0 || prefixLength > 32) {
-            throw new IllegalArgumentException("Invalid prefix length (0 <= prefix <= 32)");
-        }
-        // (int)a << b is equivalent to a << (b & 0x1f): can't shift by 32 (-1 << 32 == -1)
-        return prefixLength == 0 ? 0 : 0xffffffff << (32 - prefixLength);
-    }
-
-    /**
-     * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0x0080ffff).
-     *
-     * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
-     * which is an unusual convention. Consider {@link #prefixLengthToV4NetmaskIntHTH(int)} instead.
-     * @return the IPv4 netmask as an integer
-     */
-    public static int prefixLengthToV4NetmaskIntHTL(int prefixLength)
-            throws IllegalArgumentException {
-        return Integer.reverseBytes(prefixLengthToV4NetmaskIntHTH(prefixLength));
+        return Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL(prefixLength);
     }
 
     /**
@@ -302,17 +219,13 @@
      * @return the network prefix length
      * @throws IllegalArgumentException the specified netmask was not contiguous.
      * @hide
+     * @deprecated use {@link Inet4AddressUtils#netmaskToPrefixLength(Inet4Address)}
      */
     @UnsupportedAppUsage
+    @Deprecated
     public static int netmaskToPrefixLength(Inet4Address netmask) {
-        // inetAddressToInt returns an int in *network* byte order.
-        int i = Integer.reverseBytes(inetAddressToInt(netmask));
-        int prefixLength = Integer.bitCount(i);
-        int trailingZeros = Integer.numberOfTrailingZeros(i);
-        if (trailingZeros != 32 - prefixLength) {
-            throw new IllegalArgumentException("Non-contiguous netmask: " + Integer.toHexString(i));
-        }
-        return prefixLength;
+        // This is only here because some apps seem to be using it (@UnsupportedAppUsage).
+        return Inet4AddressUtils.netmaskToPrefixLength(netmask);
     }
 
 
@@ -333,32 +246,6 @@
     }
 
     /**
-     * Writes an InetAddress to a parcel. The address may be null. This is likely faster than
-     * calling writeSerializable.
-     */
-    protected static void parcelInetAddress(Parcel parcel, InetAddress address, int flags) {
-        byte[] addressArray = (address != null) ? address.getAddress() : null;
-        parcel.writeByteArray(addressArray);
-    }
-
-    /**
-     * Reads an InetAddress from a parcel. Returns null if the address that was written was null
-     * or if the data is invalid.
-     */
-    protected static InetAddress unparcelInetAddress(Parcel in) {
-        byte[] addressArray = in.createByteArray();
-        if (addressArray == null) {
-            return null;
-        }
-        try {
-            return InetAddress.getByAddress(addressArray);
-        } catch (UnknownHostException e) {
-            return null;
-        }
-    }
-
-
-    /**
      *  Masks a raw IP address byte array with the specified prefix length.
      */
     public static void maskRawAddress(byte[] array, int prefixLength) {
@@ -403,16 +290,8 @@
      */
     @UnsupportedAppUsage
     public static int getImplicitNetmask(Inet4Address address) {
-        int firstByte = address.getAddress()[0] & 0xff;  // Convert to an unsigned value.
-        if (firstByte < 128) {
-            return 8;
-        } else if (firstByte < 192) {
-            return 16;
-        } else if (firstByte < 224) {
-            return 24;
-        } else {
-            return 32;  // Will likely not end well for other reasons.
-        }
+        // Only here because it seems to be used by apps
+        return Inet4AddressUtils.getImplicitNetmask(address);
     }
 
     /**
@@ -440,28 +319,6 @@
     }
 
     /**
-     * Get a prefix mask as Inet4Address for a given prefix length.
-     *
-     * <p>For example 20 -> 255.255.240.0
-     */
-    public static Inet4Address getPrefixMaskAsInet4Address(int prefixLength)
-            throws IllegalArgumentException {
-        return intToInet4AddressHTH(prefixLengthToV4NetmaskIntHTH(prefixLength));
-    }
-
-    /**
-     * Get the broadcast address for a given prefix.
-     *
-     * <p>For example 192.168.0.1/24 -> 192.168.0.255
-     */
-    public static Inet4Address getBroadcastAddress(Inet4Address addr, int prefixLength)
-            throws IllegalArgumentException {
-        final int intBroadcastAddr = inet4AddressToIntHTH(addr)
-                | ~prefixLengthToV4NetmaskIntHTH(prefixLength);
-        return intToInet4AddressHTH(intBroadcastAddr);
-    }
-
-    /**
      * Check if IP address type is consistent between two InetAddress.
      * @return true if both are the same type.  False otherwise.
      */
diff --git a/core/java/android/net/ProxyInfo.java b/core/java/android/net/ProxyInfo.java
index e926fda..ef2269a 100644
--- a/core/java/android/net/ProxyInfo.java
+++ b/core/java/android/net/ProxyInfo.java
@@ -39,12 +39,12 @@
  */
 public class ProxyInfo implements Parcelable {
 
-    private String mHost;
-    private int mPort;
-    private String mExclusionList;
-    private String[] mParsedExclusionList;
+    private final String mHost;
+    private final int mPort;
+    private final String mExclusionList;
+    private final String[] mParsedExclusionList;
+    private final Uri mPacFileUrl;
 
-    private Uri mPacFileUrl;
     /**
      *@hide
      */
@@ -96,7 +96,8 @@
     public ProxyInfo(String host, int port, String exclList) {
         mHost = host;
         mPort = port;
-        setExclusionList(exclList);
+        mExclusionList = exclList;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         mPacFileUrl = Uri.EMPTY;
     }
 
@@ -107,7 +108,8 @@
     public ProxyInfo(Uri pacFileUrl) {
         mHost = LOCAL_HOST;
         mPort = LOCAL_PORT;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         if (pacFileUrl == null) {
             throw new NullPointerException();
         }
@@ -121,7 +123,8 @@
     public ProxyInfo(String pacFileUrl) {
         mHost = LOCAL_HOST;
         mPort = LOCAL_PORT;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         mPacFileUrl = Uri.parse(pacFileUrl);
     }
 
@@ -132,13 +135,22 @@
     public ProxyInfo(Uri pacFileUrl, int localProxyPort) {
         mHost = LOCAL_HOST;
         mPort = localProxyPort;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         if (pacFileUrl == null) {
             throw new NullPointerException();
         }
         mPacFileUrl = pacFileUrl;
     }
 
+    private static String[] parseExclusionList(String exclusionList) {
+        if (exclusionList == null) {
+            return new String[0];
+        } else {
+            return exclusionList.toLowerCase(Locale.ROOT).split(",");
+        }
+    }
+
     private ProxyInfo(String host, int port, String exclList, String[] parsedExclList) {
         mHost = host;
         mPort = port;
@@ -159,6 +171,10 @@
             mExclusionList = source.getExclusionListAsString();
             mParsedExclusionList = source.mParsedExclusionList;
         } else {
+            mHost = null;
+            mPort = 0;
+            mExclusionList = null;
+            mParsedExclusionList = null;
             mPacFileUrl = Uri.EMPTY;
         }
     }
@@ -214,24 +230,14 @@
         return mExclusionList;
     }
 
-    // comma separated
-    private void setExclusionList(String exclusionList) {
-        mExclusionList = exclusionList;
-        if (mExclusionList == null) {
-            mParsedExclusionList = new String[0];
-        } else {
-            mParsedExclusionList = exclusionList.toLowerCase(Locale.ROOT).split(",");
-        }
-    }
-
     /**
      * @hide
      */
     public boolean isValid() {
         if (!Uri.EMPTY.equals(mPacFileUrl)) return true;
         return Proxy.PROXY_VALID == Proxy.validate(mHost == null ? "" : mHost,
-                                                mPort == 0 ? "" : Integer.toString(mPort),
-                                                mExclusionList == null ? "" : mExclusionList);
+                mPort == 0 ? "" : Integer.toString(mPort),
+                mExclusionList == null ? "" : mExclusionList);
     }
 
     /**
@@ -262,7 +268,7 @@
             sb.append("] ");
             sb.append(Integer.toString(mPort));
             if (mExclusionList != null) {
-                    sb.append(" xl=").append(mExclusionList);
+                sb.append(" xl=").append(mExclusionList);
             }
         } else {
             sb.append("[ProxyProperties.mHost == null]");
@@ -308,8 +314,8 @@
      */
     public int hashCode() {
         return ((null == mHost) ? 0 : mHost.hashCode())
-        + ((null == mExclusionList) ? 0 : mExclusionList.hashCode())
-        + mPort;
+                + ((null == mExclusionList) ? 0 : mExclusionList.hashCode())
+                + mPort;
     }
 
     /**
@@ -352,8 +358,7 @@
                 }
                 String exclList = in.readString();
                 String[] parsedExclList = in.readStringArray();
-                ProxyInfo proxyProperties =
-                        new ProxyInfo(host, port, exclList, parsedExclList);
+                ProxyInfo proxyProperties = new ProxyInfo(host, port, exclList, parsedExclList);
                 return proxyProperties;
             }
 
diff --git a/core/java/android/net/StaticIpConfiguration.java b/core/java/android/net/StaticIpConfiguration.java
index 3aa56b9..99cf3a9 100644
--- a/core/java/android/net/StaticIpConfiguration.java
+++ b/core/java/android/net/StaticIpConfiguration.java
@@ -16,10 +16,12 @@
 
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
-import android.net.LinkAddress;
-import android.os.Parcelable;
+import android.net.shared.InetAddressUtils;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 import java.net.InetAddress;
 import java.util.ArrayList;
@@ -46,17 +48,22 @@
  *
  * @hide
  */
-public class StaticIpConfiguration implements Parcelable {
+@SystemApi
+@TestApi
+public final class StaticIpConfiguration implements Parcelable {
+    /** @hide */
     @UnsupportedAppUsage
     public LinkAddress ipAddress;
+    /** @hide */
     @UnsupportedAppUsage
     public InetAddress gateway;
+    /** @hide */
     @UnsupportedAppUsage
     public final ArrayList<InetAddress> dnsServers;
+    /** @hide */
     @UnsupportedAppUsage
     public String domains;
 
-    @UnsupportedAppUsage
     public StaticIpConfiguration() {
         dnsServers = new ArrayList<InetAddress>();
     }
@@ -79,6 +86,41 @@
         domains = null;
     }
 
+    public LinkAddress getIpAddress() {
+        return ipAddress;
+    }
+
+    public void setIpAddress(LinkAddress ipAddress) {
+        this.ipAddress = ipAddress;
+    }
+
+    public InetAddress getGateway() {
+        return gateway;
+    }
+
+    public void setGateway(InetAddress gateway) {
+        this.gateway = gateway;
+    }
+
+    public List<InetAddress> getDnsServers() {
+        return dnsServers;
+    }
+
+    public String getDomains() {
+        return domains;
+    }
+
+    public void setDomains(String newDomains) {
+        domains = newDomains;
+    }
+
+    /**
+     * Add a DNS server to this configuration.
+     */
+    public void addDnsServer(InetAddress server) {
+        dnsServers.add(server);
+    }
+
     /**
      * Returns the network routes specified by this object. Will typically include a
      * directly-connected route for the IP address's local subnet and a default route. If the
@@ -86,7 +128,6 @@
      * route to the gateway as well. This configuration is arguably invalid, but it used to work
      * in K and earlier, and other OSes appear to accept it.
      */
-    @UnsupportedAppUsage
     public List<RouteInfo> getRoutes(String iface) {
         List<RouteInfo> routes = new ArrayList<RouteInfo>(3);
         if (ipAddress != null) {
@@ -107,6 +148,7 @@
      * contained in the LinkProperties will not be a complete picture of the link's configuration,
      * because any configuration information that is obtained dynamically by the network (e.g.,
      * IPv6 configuration) will not be included.
+     * @hide
      */
     public LinkProperties toLinkProperties(String iface) {
         LinkProperties lp = new LinkProperties();
@@ -124,6 +166,7 @@
         return lp;
     }
 
+    @Override
     public String toString() {
         StringBuffer str = new StringBuffer();
 
@@ -143,6 +186,7 @@
         return str.toString();
     }
 
+    @Override
     public int hashCode() {
         int result = 13;
         result = 47 * result + (ipAddress == null ? 0 : ipAddress.hashCode());
@@ -168,12 +212,10 @@
     }
 
     /** Implement the Parcelable interface */
-    public static Creator<StaticIpConfiguration> CREATOR =
+    public static final Creator<StaticIpConfiguration> CREATOR =
         new Creator<StaticIpConfiguration>() {
             public StaticIpConfiguration createFromParcel(Parcel in) {
-                StaticIpConfiguration s = new StaticIpConfiguration();
-                readFromParcel(s, in);
-                return s;
+                return readFromParcel(in);
             }
 
             public StaticIpConfiguration[] newArray(int size) {
@@ -182,29 +224,34 @@
         };
 
     /** Implement the Parcelable interface */
+    @Override
     public int describeContents() {
         return 0;
     }
 
     /** Implement the Parcelable interface */
+    @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeParcelable(ipAddress, flags);
-        NetworkUtils.parcelInetAddress(dest, gateway, flags);
+        InetAddressUtils.parcelInetAddress(dest, gateway, flags);
         dest.writeInt(dnsServers.size());
         for (InetAddress dnsServer : dnsServers) {
-            NetworkUtils.parcelInetAddress(dest, dnsServer, flags);
+            InetAddressUtils.parcelInetAddress(dest, dnsServer, flags);
         }
         dest.writeString(domains);
     }
 
-    protected static void readFromParcel(StaticIpConfiguration s, Parcel in) {
+    /** @hide */
+    public static StaticIpConfiguration readFromParcel(Parcel in) {
+        final StaticIpConfiguration s = new StaticIpConfiguration();
         s.ipAddress = in.readParcelable(null);
-        s.gateway = NetworkUtils.unparcelInetAddress(in);
+        s.gateway = InetAddressUtils.unparcelInetAddress(in);
         s.dnsServers.clear();
         int size = in.readInt();
         for (int i = 0; i < size; i++) {
-            s.dnsServers.add(NetworkUtils.unparcelInetAddress(in));
+            s.dnsServers.add(InetAddressUtils.unparcelInetAddress(in));
         }
         s.domains = in.readString();
+        return s;
     }
 }
diff --git a/core/java/android/net/TrafficStats.java b/core/java/android/net/TrafficStats.java
index bbf8f97..49c6f74 100644
--- a/core/java/android/net/TrafficStats.java
+++ b/core/java/android/net/TrafficStats.java
@@ -128,10 +128,14 @@
     public static final int TAG_SYSTEM_APP = 0xFFFFFF05;
 
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int TAG_SYSTEM_DHCP = 0xFFFFFF40;
     /** @hide */
     public static final int TAG_SYSTEM_NTP = 0xFFFFFF41;
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int TAG_SYSTEM_PROBE = 0xFFFFFF42;
     /** @hide */
     public static final int TAG_SYSTEM_NEIGHBOR = 0xFFFFFF43;
@@ -140,6 +144,8 @@
     /** @hide */
     public static final int TAG_SYSTEM_PAC = 0xFFFFFF45;
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int TAG_SYSTEM_DHCP_SERVER = 0xFFFFFF46;
 
     private static INetworkStatsService sStatsService;
diff --git a/core/java/android/net/VpnService.java b/core/java/android/net/VpnService.java
index 37bf3a7..dc099a4 100644
--- a/core/java/android/net/VpnService.java
+++ b/core/java/android/net/VpnService.java
@@ -509,6 +509,15 @@
         }
 
         /**
+         * Sets an HTTP proxy for the VPN network. This proxy is only a recommendation
+         * and it is possible that some apps will ignore it.
+         */
+        public Builder setHttpProxy(ProxyInfo proxyInfo) {
+            mConfig.proxyInfo = proxyInfo;
+            return this;
+        }
+
+        /**
          * Add a network address to the VPN interface. Both IPv4 and IPv6
          * addresses are supported. At least one address must be set before
          * calling {@link #establish}.
diff --git a/core/java/android/net/apf/ApfCapabilities.java b/core/java/android/net/apf/ApfCapabilities.java
index f28cdc9..e09fa8f 100644
--- a/core/java/android/net/apf/ApfCapabilities.java
+++ b/core/java/android/net/apf/ApfCapabilities.java
@@ -16,11 +16,19 @@
 
 package android.net.apf;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
+import android.content.Context;
+
+import com.android.internal.R;
+
 /**
  * APF program support capabilities.
  *
  * @hide
  */
+@SystemApi
+@TestApi
 public class ApfCapabilities {
     /**
      * Version of APF instruction set supported for packet filtering. 0 indicates no support for
@@ -69,4 +77,18 @@
     public boolean hasDataAccess() {
         return apfVersionSupported >= 4;
     }
+
+    /**
+     * @return Whether the APF Filter in the device should filter out IEEE 802.3 Frames.
+     */
+    public static boolean getApfDrop8023Frames(Context context) {
+        return context.getResources().getBoolean(R.bool.config_apfDrop802_3Frames);
+    }
+
+    /**
+     * @return An array of blacklisted EtherType, packets with EtherTypes within it will be dropped.
+     */
+    public static int[] getApfEthTypeBlackList(Context context) {
+        return context.getResources().getIntArray(R.array.config_apfEthTypeBlackList);
+    }
 }
diff --git a/core/java/android/net/captiveportal/CaptivePortalProbeResult.java b/core/java/android/net/captiveportal/CaptivePortalProbeResult.java
index 1634694..7432687 100644
--- a/core/java/android/net/captiveportal/CaptivePortalProbeResult.java
+++ b/core/java/android/net/captiveportal/CaptivePortalProbeResult.java
@@ -17,11 +17,15 @@
 package android.net.captiveportal;
 
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 
 /**
  * Result of calling isCaptivePortal().
  * @hide
  */
+@SystemApi
+@TestApi
 public final class CaptivePortalProbeResult {
     public static final int SUCCESS_CODE = 204;
     public static final int FAILED_CODE = 599;
diff --git a/core/java/android/net/captiveportal/CaptivePortalProbeSpec.java b/core/java/android/net/captiveportal/CaptivePortalProbeSpec.java
index 57a926a..7ad4ecf 100644
--- a/core/java/android/net/captiveportal/CaptivePortalProbeSpec.java
+++ b/core/java/android/net/captiveportal/CaptivePortalProbeSpec.java
@@ -21,21 +21,26 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.text.TextUtils;
 import android.util.Log;
 
+import com.android.internal.annotations.VisibleForTesting;
+
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.text.ParseException;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.regex.Pattern;
 import java.util.regex.PatternSyntaxException;
 
 /** @hide */
+@SystemApi
+@TestApi
 public abstract class CaptivePortalProbeSpec {
-    public static final String HTTP_LOCATION_HEADER_NAME = "Location";
-
     private static final String TAG = CaptivePortalProbeSpec.class.getSimpleName();
     private static final String REGEX_SEPARATOR = "@@/@@";
     private static final String SPEC_SEPARATOR = "@@,@@";
@@ -55,7 +60,9 @@
      * @throws MalformedURLException The URL has invalid format for {@link URL#URL(String)}.
      * @throws ParseException The string is empty, does not match the above format, or a regular
      * expression is invalid for {@link Pattern#compile(String)}.
+     * @hide
      */
+    @VisibleForTesting
     @NonNull
     public static CaptivePortalProbeSpec parseSpec(String spec) throws ParseException,
             MalformedURLException {
@@ -113,7 +120,8 @@
      * <p>Each spec is separated by @@,@@ and follows the format for {@link #parseSpec(String)}.
      * <p>This method does not throw but ignores any entry that could not be parsed.
      */
-    public static CaptivePortalProbeSpec[] parseCaptivePortalProbeSpecs(String settingsVal) {
+    public static Collection<CaptivePortalProbeSpec> parseCaptivePortalProbeSpecs(
+            String settingsVal) {
         List<CaptivePortalProbeSpec> specs = new ArrayList<>();
         if (settingsVal != null) {
             for (String spec : TextUtils.split(settingsVal, SPEC_SEPARATOR)) {
@@ -128,7 +136,7 @@
         if (specs.isEmpty()) {
             Log.e(TAG, String.format("could not create any validation spec from %s", settingsVal));
         }
-        return specs.toArray(new CaptivePortalProbeSpec[specs.size()]);
+        return specs;
     }
 
     /**
diff --git a/core/java/android/net/metrics/DhcpClientEvent.java b/core/java/android/net/metrics/DhcpClientEvent.java
index 2a942ee..3008115 100644
--- a/core/java/android/net/metrics/DhcpClientEvent.java
+++ b/core/java/android/net/metrics/DhcpClientEvent.java
@@ -31,10 +31,6 @@
 public final class DhcpClientEvent implements IpConnectivityLog.Event {
 
     // Names for recording DhcpClient pseudo-state transitions.
-    /** {@hide} Represents transitions from DhcpInitState to DhcpBoundState */
-    public static final String INITIAL_BOUND = "InitialBoundState";
-    /** {@hide} Represents transitions from and to DhcpBoundState via DhcpRenewingState */
-    public static final String RENEWING_BOUND = "RenewingBoundState";
 
     /** @hide */
     public final String msg;
diff --git a/packages/NetworkStack/src/android/net/util/FdEventsReader.java b/core/java/android/net/shared/FdEventsReader.java
similarity index 89%
rename from packages/NetworkStack/src/android/net/util/FdEventsReader.java
rename to core/java/android/net/shared/FdEventsReader.java
index 8bbf449..bffbfb1 100644
--- a/packages/NetworkStack/src/android/net/util/FdEventsReader.java
+++ b/core/java/android/net/shared/FdEventsReader.java
@@ -14,22 +14,22 @@
  * limitations under the License.
  */
 
-package android.net.util;
+package android.net.shared;
 
-import static android.os.MessageQueue.OnFileDescriptorEventListener.EVENT_INPUT;
 import static android.os.MessageQueue.OnFileDescriptorEventListener.EVENT_ERROR;
+import static android.os.MessageQueue.OnFileDescriptorEventListener.EVENT_INPUT;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.net.util.SocketUtils;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.MessageQueue;
 import android.system.ErrnoException;
 import android.system.OsConstants;
 
-import libcore.io.IoUtils;
-
 import java.io.FileDescriptor;
+import java.io.IOException;
 
 
 /**
@@ -63,6 +63,7 @@
  * All public methods MUST only be called from the same thread with which
  * the Handler constructor argument is associated.
  *
+ * @param <BufferType> the type of the buffer used to read data.
  * @hide
  */
 public abstract class FdEventsReader<BufferType> {
@@ -80,7 +81,10 @@
     private long mPacketsReceived;
 
     protected static void closeFd(FileDescriptor fd) {
-        IoUtils.closeQuietly(fd);
+        try {
+            SocketUtils.closeSocket(fd);
+        } catch (IOException ignored) {
+        }
     }
 
     protected FdEventsReader(@NonNull Handler h, @NonNull BufferType buffer) {
@@ -89,6 +93,7 @@
         mBuffer = buffer;
     }
 
+    /** Start this FdEventsReader. */
     public void start() {
         if (onCorrectThread()) {
             createAndRegisterFd();
@@ -100,6 +105,7 @@
         }
     }
 
+    /** Stop this FdEventsReader and destroy the file descriptor. */
     public void stop() {
         if (onCorrectThread()) {
             unregisterAndDestroyFd();
@@ -112,22 +118,29 @@
     }
 
     @NonNull
-    public Handler getHandler() { return mHandler; }
+    public Handler getHandler() {
+        return mHandler;
+    }
 
     protected abstract int recvBufSize(@NonNull BufferType buffer);
 
-    public int recvBufSize() { return recvBufSize(mBuffer); }
+    /** Returns the size of the receive buffer. */
+    public int recvBufSize() {
+        return recvBufSize(mBuffer);
+    }
 
     /**
      * Get the number of successful calls to {@link #readPacket(FileDescriptor, Object)}.
      *
      * <p>A call was successful if {@link #readPacket(FileDescriptor, Object)} returned a value > 0.
      */
-    public final long numPacketsReceived() { return mPacketsReceived; }
+    public final long numPacketsReceived() {
+        return mPacketsReceived;
+    }
 
     /**
-     * Subclasses MUST create the listening socket here, including setting
-     * all desired socket options, interface or address/port binding, etc.
+     * Subclasses MUST create the listening socket here, including setting all desired socket
+     * options, interface or address/port binding, etc. The socket MUST be created nonblocking.
      */
     @Nullable
     protected abstract FileDescriptor createFd();
@@ -171,10 +184,6 @@
 
         try {
             mFd = createFd();
-            if (mFd != null) {
-                // Force the socket to be non-blocking.
-                IoUtils.setBlocking(mFd, false);
-            }
         } catch (Exception e) {
             logError("Failed to create socket: ", e);
             closeFd(mFd);
@@ -199,7 +208,9 @@
         onStart();
     }
 
-    private boolean isRunning() { return (mFd != null) && mFd.valid(); }
+    private boolean isRunning() {
+        return (mFd != null) && mFd.valid();
+    }
 
     // Keep trying to read until we get EAGAIN/EWOULDBLOCK or some fatal error.
     private boolean handleInput() {
diff --git a/core/java/android/net/shared/Inet4AddressUtils.java b/core/java/android/net/shared/Inet4AddressUtils.java
new file mode 100644
index 0000000..bec0c84
--- /dev/null
+++ b/core/java/android/net/shared/Inet4AddressUtils.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.shared;
+
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+/**
+ * Collection of utilities to work with IPv4 addresses.
+ * @hide
+ */
+public class Inet4AddressUtils {
+
+    /**
+     * Convert a IPv4 address from an integer to an InetAddress (0x04030201 -> 1.2.3.4)
+     *
+     * <p>This method uses the higher-order int bytes as the lower-order IPv4 address bytes,
+     * which is an unusual convention. Consider {@link #intToInet4AddressHTH(int)} instead.
+     * @param hostAddress an int coding for an IPv4 address, where higher-order int byte is
+     *                    lower-order IPv4 address byte
+     */
+    public static Inet4Address intToInet4AddressHTL(int hostAddress) {
+        return intToInet4AddressHTH(Integer.reverseBytes(hostAddress));
+    }
+
+    /**
+     * Convert a IPv4 address from an integer to an InetAddress (0x01020304 -> 1.2.3.4)
+     * @param hostAddress an int coding for an IPv4 address
+     */
+    public static Inet4Address intToInet4AddressHTH(int hostAddress) {
+        byte[] addressBytes = { (byte) (0xff & (hostAddress >> 24)),
+                (byte) (0xff & (hostAddress >> 16)),
+                (byte) (0xff & (hostAddress >> 8)),
+                (byte) (0xff & hostAddress) };
+
+        try {
+            return (Inet4Address) InetAddress.getByAddress(addressBytes);
+        } catch (UnknownHostException e) {
+            throw new AssertionError();
+        }
+    }
+
+    /**
+     * Convert an IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x01020304)
+     *
+     * <p>This conversion can help order IP addresses: considering the ordering
+     * 192.0.2.1 < 192.0.2.2 < ..., resulting ints will follow that ordering if read as unsigned
+     * integers with {@link Integer#toUnsignedLong}.
+     * @param inetAddr is an InetAddress corresponding to the IPv4 address
+     * @return the IP address as integer
+     */
+    public static int inet4AddressToIntHTH(Inet4Address inetAddr)
+            throws IllegalArgumentException {
+        byte [] addr = inetAddr.getAddress();
+        return ((addr[0] & 0xff) << 24) | ((addr[1] & 0xff) << 16)
+                | ((addr[2] & 0xff) << 8) | (addr[3] & 0xff);
+    }
+
+    /**
+     * Convert a IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x04030201)
+     *
+     * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
+     * which is an unusual convention. Consider {@link #inet4AddressToIntHTH(Inet4Address)} instead.
+     * @param inetAddr is an InetAddress corresponding to the IPv4 address
+     * @return the IP address as integer
+     */
+    public static int inet4AddressToIntHTL(Inet4Address inetAddr) {
+        return Integer.reverseBytes(inet4AddressToIntHTH(inetAddr));
+    }
+
+    /**
+     * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0xffff8000)
+     * @return the IPv4 netmask as an integer
+     */
+    public static int prefixLengthToV4NetmaskIntHTH(int prefixLength)
+            throws IllegalArgumentException {
+        if (prefixLength < 0 || prefixLength > 32) {
+            throw new IllegalArgumentException("Invalid prefix length (0 <= prefix <= 32)");
+        }
+        // (int)a << b is equivalent to a << (b & 0x1f): can't shift by 32 (-1 << 32 == -1)
+        return prefixLength == 0 ? 0 : 0xffffffff << (32 - prefixLength);
+    }
+
+    /**
+     * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0x0080ffff).
+     *
+     * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
+     * which is an unusual convention. Consider {@link #prefixLengthToV4NetmaskIntHTH(int)} instead.
+     * @return the IPv4 netmask as an integer
+     */
+    public static int prefixLengthToV4NetmaskIntHTL(int prefixLength)
+            throws IllegalArgumentException {
+        return Integer.reverseBytes(prefixLengthToV4NetmaskIntHTH(prefixLength));
+    }
+
+    /**
+     * Convert an IPv4 netmask to a prefix length, checking that the netmask is contiguous.
+     * @param netmask as a {@code Inet4Address}.
+     * @return the network prefix length
+     * @throws IllegalArgumentException the specified netmask was not contiguous.
+     * @hide
+     */
+    public static int netmaskToPrefixLength(Inet4Address netmask) {
+        // inetAddressToInt returns an int in *network* byte order.
+        int i = inet4AddressToIntHTH(netmask);
+        int prefixLength = Integer.bitCount(i);
+        int trailingZeros = Integer.numberOfTrailingZeros(i);
+        if (trailingZeros != 32 - prefixLength) {
+            throw new IllegalArgumentException("Non-contiguous netmask: " + Integer.toHexString(i));
+        }
+        return prefixLength;
+    }
+
+    /**
+     * Returns the implicit netmask of an IPv4 address, as was the custom before 1993.
+     */
+    public static int getImplicitNetmask(Inet4Address address) {
+        int firstByte = address.getAddress()[0] & 0xff;  // Convert to an unsigned value.
+        if (firstByte < 128) {
+            return 8;
+        } else if (firstByte < 192) {
+            return 16;
+        } else if (firstByte < 224) {
+            return 24;
+        } else {
+            return 32;  // Will likely not end well for other reasons.
+        }
+    }
+
+    /**
+     * Get the broadcast address for a given prefix.
+     *
+     * <p>For example 192.168.0.1/24 -> 192.168.0.255
+     */
+    public static Inet4Address getBroadcastAddress(Inet4Address addr, int prefixLength)
+            throws IllegalArgumentException {
+        final int intBroadcastAddr = inet4AddressToIntHTH(addr)
+                | ~prefixLengthToV4NetmaskIntHTH(prefixLength);
+        return intToInet4AddressHTH(intBroadcastAddr);
+    }
+
+    /**
+     * Get a prefix mask as Inet4Address for a given prefix length.
+     *
+     * <p>For example 20 -> 255.255.240.0
+     */
+    public static Inet4Address getPrefixMaskAsInet4Address(int prefixLength)
+            throws IllegalArgumentException {
+        return intToInet4AddressHTH(prefixLengthToV4NetmaskIntHTH(prefixLength));
+    }
+}
diff --git a/core/java/android/net/shared/InetAddressUtils.java b/core/java/android/net/shared/InetAddressUtils.java
new file mode 100644
index 0000000..c9ee3a7
--- /dev/null
+++ b/core/java/android/net/shared/InetAddressUtils.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.shared;
+
+import android.os.Parcel;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+/**
+ * Collection of utilities to interact with {@link InetAddress}
+ * @hide
+ */
+public class InetAddressUtils {
+
+    /**
+     * Writes an InetAddress to a parcel. The address may be null. This is likely faster than
+     * calling writeSerializable.
+     * @hide
+     */
+    public static void parcelInetAddress(Parcel parcel, InetAddress address, int flags) {
+        byte[] addressArray = (address != null) ? address.getAddress() : null;
+        parcel.writeByteArray(addressArray);
+    }
+
+    /**
+     * Reads an InetAddress from a parcel. Returns null if the address that was written was null
+     * or if the data is invalid.
+     * @hide
+     */
+    public static InetAddress unparcelInetAddress(Parcel in) {
+        byte[] addressArray = in.createByteArray();
+        if (addressArray == null) {
+            return null;
+        }
+        try {
+            return InetAddress.getByAddress(addressArray);
+        } catch (UnknownHostException e) {
+            return null;
+        }
+    }
+
+    private InetAddressUtils() {}
+}
diff --git a/core/java/android/net/util/SocketUtils.java b/core/java/android/net/util/SocketUtils.java
index de67cf5..fbb15ed 100644
--- a/core/java/android/net/util/SocketUtils.java
+++ b/core/java/android/net/util/SocketUtils.java
@@ -20,20 +20,29 @@
 import static android.system.OsConstants.SO_BINDTODEVICE;
 
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
+import android.net.MacAddress;
 import android.net.NetworkUtils;
 import android.system.ErrnoException;
 import android.system.NetlinkSocketAddress;
 import android.system.Os;
 import android.system.PacketSocketAddress;
+import android.system.StructTimeval;
+
+import libcore.io.IoBridge;
 
 import java.io.FileDescriptor;
+import java.io.IOException;
+import java.net.Inet4Address;
 import java.net.SocketAddress;
+import java.net.SocketException;
 
 /**
  * Collection of utilities to interact with raw sockets.
  * @hide
  */
 @SystemApi
+@TestApi
 public class SocketUtils {
     /**
      * Create a raw datagram socket that is bound to an interface.
@@ -57,18 +66,94 @@
     }
 
     /**
-     * Make a socket address to bind to packet sockets.
+     * Make socket address that packet sockets can bind to.
      */
     public static SocketAddress makePacketSocketAddress(short protocol, int ifIndex) {
         return new PacketSocketAddress(protocol, ifIndex);
     }
 
     /**
-     * Make a socket address to send raw packets.
+     * Make a socket address that packet socket can send packets to.
      */
     public static SocketAddress makePacketSocketAddress(int ifIndex, byte[] hwAddr) {
         return new PacketSocketAddress(ifIndex, hwAddr);
     }
 
+    /**
+     * Set an option on a socket that takes a time value argument.
+     */
+    public static void setSocketTimeValueOption(
+            FileDescriptor fd, int level, int option, long millis) throws ErrnoException {
+        Os.setsockoptTimeval(fd, level, option, StructTimeval.fromMillis(millis));
+    }
+
+    /**
+     * Bind a socket to the specified address.
+     */
+    public static void bindSocket(FileDescriptor fd, SocketAddress addr)
+            throws ErrnoException, SocketException {
+        Os.bind(fd, addr);
+    }
+
+    /**
+     * Connect a socket to the specified address.
+     */
+    public static void connectSocket(FileDescriptor fd, SocketAddress addr)
+            throws ErrnoException, SocketException {
+        Os.connect(fd, addr);
+    }
+
+    /**
+     * Send a message on a socket, using the specified SocketAddress.
+     */
+    public static void sendTo(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount,
+            int flags, SocketAddress addr) throws ErrnoException, SocketException {
+        Os.sendto(fd, bytes, byteOffset, byteCount, flags, addr);
+    }
+
+    /**
+     * @see IoBridge#closeAndSignalBlockedThreads(FileDescriptor)
+     */
+    public static void closeSocket(FileDescriptor fd) throws IOException {
+        IoBridge.closeAndSignalBlockedThreads(fd);
+    }
+
+    /**
+     * Attaches a socket filter that accepts DHCP packets to the given socket.
+     */
+    public static void attachDhcpFilter(FileDescriptor fd) throws SocketException {
+        NetworkUtils.attachDhcpFilter(fd);
+    }
+
+    /**
+     * Attaches a socket filter that accepts ICMPv6 router advertisements to the given socket.
+     * @param fd the socket's {@link FileDescriptor}.
+     * @param packetType the hardware address type, one of ARPHRD_*.
+     */
+    public static void attachRaFilter(FileDescriptor fd, int packetType) throws SocketException {
+        NetworkUtils.attachRaFilter(fd, packetType);
+    }
+
+    /**
+     * Attaches a socket filter that accepts L2-L4 signaling traffic required for IP connectivity.
+     *
+     * This includes: all ARP, ICMPv6 RS/RA/NS/NA messages, and DHCPv4 exchanges.
+     *
+     * @param fd the socket's {@link FileDescriptor}.
+     * @param packetType the hardware address type, one of ARPHRD_*.
+     */
+    public static void attachControlPacketFilter(FileDescriptor fd, int packetType)
+            throws SocketException {
+        NetworkUtils.attachControlPacketFilter(fd, packetType);
+    }
+
+    /**
+     * Add an entry into the ARP cache.
+     */
+    public static void addArpEntry(Inet4Address ipv4Addr, MacAddress ethAddr, String ifname,
+            FileDescriptor fd) throws IOException {
+        NetworkUtils.addArpEntry(ipv4Addr, ethAddr, ifname, fd);
+    }
+
     private SocketUtils() {}
 }
diff --git a/core/java/android/nfc/INfcAdapter.aidl b/core/java/android/nfc/INfcAdapter.aidl
index 6801618..0b2cfdd 100644
--- a/core/java/android/nfc/INfcAdapter.aidl
+++ b/core/java/android/nfc/INfcAdapter.aidl
@@ -68,4 +68,8 @@
     void removeNfcUnlockHandler(INfcUnlockHandler unlockHandler);
 
     void verifyNfcPermission();
+    boolean isNfcSecureEnabled();
+    boolean deviceSupportsNfcSecure();
+    boolean setNfcSecure(boolean enable);
+
 }
diff --git a/core/java/android/nfc/NfcAdapter.java b/core/java/android/nfc/NfcAdapter.java
index e55e036..a7d2ee9 100644
--- a/core/java/android/nfc/NfcAdapter.java
+++ b/core/java/android/nfc/NfcAdapter.java
@@ -1702,6 +1702,63 @@
     }
 
     /**
+     * Sets Secure NFC feature.
+     * <p>This API is for the Settings application.
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS)
+    public boolean setNfcSecure(boolean enable) {
+        if (!sHasNfcFeature) {
+            throw new UnsupportedOperationException();
+        }
+        try {
+            return sService.setNfcSecure(enable);
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
+    /**
+     * Checks if the device supports Secure NFC functionality.
+     *
+     * @return True if device supports Secure NFC, false otherwise
+     * @throws UnsupportedOperationException if FEATURE_NFC is unavailable.
+     */
+    public boolean deviceSupportsNfcSecure() {
+        if (!sHasNfcFeature) {
+            throw new UnsupportedOperationException();
+        }
+        try {
+            return sService.deviceSupportsNfcSecure();
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
+    /**
+     * Checks Secure NFC feature is enabled.
+     *
+     * @return True if device supports Secure NFC is enabled, false otherwise
+     * @throws UnsupportedOperationException if FEATURE_NFC is unavailable.
+     * @throws UnsupportedOperationException if device doesn't support
+     *         Secure NFC functionality. {@link #deviceSupportsNfcSecure}
+     */
+    public boolean isNfcSecureEnabled() {
+        if (!sHasNfcFeature) {
+            throw new UnsupportedOperationException();
+        }
+        try {
+            return sService.isNfcSecureEnabled();
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
+    /**
      * Enable NDEF Push feature.
      * <p>This API is for the Settings application.
      * @hide
diff --git a/core/java/android/os/BugreportManager.java b/core/java/android/os/BugreportManager.java
index 518528d..3a5b8a8 100644
--- a/core/java/android/os/BugreportManager.java
+++ b/core/java/android/os/BugreportManager.java
@@ -16,10 +16,12 @@
 
 package android.os;
 
+import android.annotation.CallbackExecutor;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
+import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.content.Context;
 import android.os.IBinder.DeathRecipient;
@@ -27,14 +29,14 @@
 import java.io.FileDescriptor;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.concurrent.Executor;
 
 /**
  * Class that provides a privileged API to capture and consume bugreports.
  *
  * @hide
  */
-// TODO: Expose API when the implementation is more complete.
-// @SystemApi
+@SystemApi
 @SystemService(Context.BUGREPORT_SERVICE)
 public class BugreportManager {
     private final Context mContext;
@@ -47,55 +49,66 @@
     }
 
     /**
-     * An interface describing the listener for bugreport progress and status.
+     * An interface describing the callback for bugreport progress and status.
      */
-    public interface BugreportListener {
+    public abstract static class BugreportCallback {
+        /** @hide */
+        @Retention(RetentionPolicy.SOURCE)
+        @IntDef(prefix = { "BUGREPORT_ERROR_" }, value = {
+                BUGREPORT_ERROR_INVALID_INPUT,
+                BUGREPORT_ERROR_RUNTIME,
+                BUGREPORT_ERROR_USER_DENIED_CONSENT,
+                BUGREPORT_ERROR_USER_CONSENT_TIMED_OUT
+        })
+
+        /** Possible error codes taking a bugreport can encounter */
+        public @interface BugreportErrorCode {}
+
+        /** The input options were invalid */
+        public static final int BUGREPORT_ERROR_INVALID_INPUT =
+                IDumpstateListener.BUGREPORT_ERROR_INVALID_INPUT;
+
+        /** A runtime error occured */
+        public static final int BUGREPORT_ERROR_RUNTIME =
+                IDumpstateListener.BUGREPORT_ERROR_RUNTIME_ERROR;
+
+        /** User denied consent to share the bugreport */
+        public static final int BUGREPORT_ERROR_USER_DENIED_CONSENT =
+                IDumpstateListener.BUGREPORT_ERROR_USER_DENIED_CONSENT;
+
+        /** The request to get user consent timed out. */
+        public static final int BUGREPORT_ERROR_USER_CONSENT_TIMED_OUT =
+                IDumpstateListener.BUGREPORT_ERROR_USER_CONSENT_TIMED_OUT;
+
         /**
          * Called when there is a progress update.
          * @param progress the progress in [0.0, 100.0]
          */
-        void onProgress(float progress);
-
-        @Retention(RetentionPolicy.SOURCE)
-        @IntDef(prefix = { "BUGREPORT_ERROR_" }, value = {
-                BUGREPORT_ERROR_INVALID_INPUT,
-                BUGREPORT_ERROR_RUNTIME
-        })
-
-        /** Possible error codes taking a bugreport can encounter */
-        @interface BugreportErrorCode {}
-
-        /** The input options were invalid */
-        int BUGREPORT_ERROR_INVALID_INPUT = IDumpstateListener.BUGREPORT_ERROR_INVALID_INPUT;
-
-        /** A runtime error occured */
-        int BUGREPORT_ERROR_RUNTIME = IDumpstateListener.BUGREPORT_ERROR_RUNTIME_ERROR;
-
-        /** User denied consent to share the bugreport */
-        int BUGREPORT_ERROR_USER_DENIED_CONSENT =
-                IDumpstateListener.BUGREPORT_ERROR_USER_DENIED_CONSENT;
+        public void onProgress(float progress) {}
 
         /**
          * Called when taking bugreport resulted in an error.
          *
-         * @param errorCode the error that occurred. Possible values are
-         *     {@code BUGREPORT_ERROR_INVALID_INPUT},
-         *     {@code BUGREPORT_ERROR_RUNTIME},
-         *     {@code BUGREPORT_ERROR_USER_DENIED_CONSENT}.
+         * <p>If {@code BUGREPORT_ERROR_USER_DENIED_CONSENT} is passed, then the user did not
+         * consent to sharing the bugreport with the calling app.
+         *
+         * <p>If {@code BUGREPORT_ERROR_USER_CONSENT_TIMED_OUT} is passed, then the consent timed
+         * out, but the bugreport could be available in the internal directory of dumpstate for
+         * manual retrieval.
          */
-        void onError(@BugreportErrorCode int errorCode);
+        public void onError(@BugreportErrorCode int errorCode) {}
 
         /**
          * Called when taking bugreport finishes successfully.
          */
-        void onFinished();
+        public void onFinished() {}
     }
 
     /**
      * Starts a bugreport.
      *
      * <p>This starts a bugreport in the background. However the call itself can take several
-     * seconds to return in the worst case. {@code listener} will receive progress and status
+     * seconds to return in the worst case. {@code callback} will receive progress and status
      * updates.
      *
      * <p>The bugreport artifacts will be copied over to the given file descriptors only if the
@@ -106,19 +119,23 @@
      * @param screenshotFd file to write the screenshot, if necessary. This should be opened
      *     in write-only, append mode.
      * @param params options that specify what kind of a bugreport should be taken
-     * @param listener callback for progress and status updates
+     * @param callback callback for progress and status updates
      */
     @RequiresPermission(android.Manifest.permission.DUMP)
-    public void startBugreport(@NonNull FileDescriptor bugreportFd,
-            @Nullable FileDescriptor screenshotFd,
-            @NonNull BugreportParams params, @NonNull BugreportListener listener) {
+    public void startBugreport(@NonNull ParcelFileDescriptor bugreportFd,
+            @Nullable ParcelFileDescriptor screenshotFd,
+            @NonNull BugreportParams params,
+            @NonNull @CallbackExecutor Executor executor,
+            @NonNull BugreportCallback callback) {
         // TODO(b/111441001): Enforce android.Manifest.permission.DUMP if necessary.
-        DumpstateListener dsListener = new DumpstateListener(listener);
-
+        DumpstateListener dsListener = new DumpstateListener(executor, callback);
         try {
             // Note: mBinder can get callingUid from the binder transaction.
             mBinder.startBugreport(-1 /* callingUid */,
-                    mContext.getOpPackageName(), bugreportFd, screenshotFd,
+                    mContext.getOpPackageName(),
+                    (bugreportFd != null ? bugreportFd.getFileDescriptor() : new FileDescriptor()),
+                    (screenshotFd != null
+                            ? screenshotFd.getFileDescriptor() : new FileDescriptor()),
                     params.getMode(), dsListener);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
@@ -139,10 +156,12 @@
 
     private final class DumpstateListener extends IDumpstateListener.Stub
             implements DeathRecipient {
-        private final BugreportListener mListener;
+        private final Executor mExecutor;
+        private final BugreportCallback mCallback;
 
-        DumpstateListener(@Nullable BugreportListener listener) {
-            mListener = listener;
+        DumpstateListener(Executor executor, @Nullable BugreportCallback callback) {
+            mExecutor = executor;
+            mCallback = callback;
         }
 
         @Override
@@ -152,19 +171,37 @@
 
         @Override
         public void onProgress(int progress) throws RemoteException {
-            mListener.onProgress(progress);
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() -> {
+                    mCallback.onProgress(progress);
+                });
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
 
         @Override
         public void onError(int errorCode) throws RemoteException {
-            mListener.onError(errorCode);
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() -> {
+                    mCallback.onError(errorCode);
+                });
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
 
         @Override
         public void onFinished() throws RemoteException {
+            final long identity = Binder.clearCallingIdentity();
             try {
-                mListener.onFinished();
+                mExecutor.execute(() -> {
+                    mCallback.onFinished();
+                });
             } finally {
+                Binder.restoreCallingIdentity(identity);
                 // The bugreport has finished. Let's shutdown the service to minimize its footprint.
                 cancelBugreport();
             }
diff --git a/core/java/android/os/BugreportParams.java b/core/java/android/os/BugreportParams.java
index 4e696ae..3871375 100644
--- a/core/java/android/os/BugreportParams.java
+++ b/core/java/android/os/BugreportParams.java
@@ -17,6 +17,7 @@
 package android.os;
 
 import android.annotation.IntDef;
+import android.annotation.SystemApi;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -26,8 +27,7 @@
  *
  * @hide
  */
-// TODO: Expose API when the implementation is more complete.
-// @SystemApi
+@SystemApi
 public final class BugreportParams {
     private final int mMode;
 
diff --git a/core/java/android/os/DumpstateOptions.java b/core/java/android/os/DumpstateOptions.java
deleted file mode 100644
index 53037b24..0000000
--- a/core/java/android/os/DumpstateOptions.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.os;
-
-/**
- * Options passed to dumpstate service.
- *
- * @hide
- */
-public final class DumpstateOptions implements Parcelable {
-    // If true the caller can get callbacks with per-section
-    // progress details.
-    private final boolean mGetSectionDetails;
-    // Name of the caller.
-    private final String mName;
-
-    public DumpstateOptions(Parcel in) {
-        mGetSectionDetails = in.readBoolean();
-        mName = in.readString();
-    }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    @Override
-     public void writeToParcel(Parcel out, int flags) {
-        out.writeBoolean(mGetSectionDetails);
-        out.writeString(mName);
-    }
-
-    public static final Parcelable.Creator<DumpstateOptions> CREATOR =
-            new Parcelable.Creator<DumpstateOptions>() {
-        public DumpstateOptions createFromParcel(Parcel in) {
-            return new DumpstateOptions(in);
-        }
-
-        public DumpstateOptions[] newArray(int size) {
-            return new DumpstateOptions[size];
-        }
-    };
-}
diff --git a/core/java/android/os/ParcelFileDescriptor.java b/core/java/android/os/ParcelFileDescriptor.java
index 81fc5c0..a89fc09 100644
--- a/core/java/android/os/ParcelFileDescriptor.java
+++ b/core/java/android/os/ParcelFileDescriptor.java
@@ -55,6 +55,7 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InterruptedIOException;
+import java.io.UncheckedIOException;
 import java.net.DatagramSocket;
 import java.net.Socket;
 import java.nio.ByteOrder;
@@ -397,26 +398,41 @@
      * @param socket The Socket whose FileDescriptor is used to create
      *               a new ParcelFileDescriptor.
      *
-     * @return A new ParcelFileDescriptor with the FileDescriptor of the
-     *         specified Socket.
+     * @return A new ParcelFileDescriptor with a duped copy of the
+     * FileDescriptor of the specified Socket.
+     *
+     * @throws UncheckedIOException if {@link #dup(FileDescriptor)} throws IOException.
      */
     public static ParcelFileDescriptor fromSocket(Socket socket) {
         FileDescriptor fd = socket.getFileDescriptor$();
-        return fd != null ? new ParcelFileDescriptor(fd) : null;
+        try {
+            return fd != null ? ParcelFileDescriptor.dup(fd) : null;
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
     }
 
     /**
-     * Create a new ParcelFileDescriptor from the specified DatagramSocket.
+     * Create a new ParcelFileDescriptor from the specified DatagramSocket. The
+     * new ParcelFileDescriptor holds a dup of the original FileDescriptor in
+     * the DatagramSocket, so you must still close the DatagramSocket as well
+     * as the new ParcelFileDescriptor.
      *
      * @param datagramSocket The DatagramSocket whose FileDescriptor is used
      *               to create a new ParcelFileDescriptor.
      *
-     * @return A new ParcelFileDescriptor with the FileDescriptor of the
-     *         specified DatagramSocket.
+     * @return A new ParcelFileDescriptor with a duped copy of the
+     * FileDescriptor of the specified Socket.
+     *
+     * @throws UncheckedIOException if {@link #dup(FileDescriptor)} throws IOException.
      */
     public static ParcelFileDescriptor fromDatagramSocket(DatagramSocket datagramSocket) {
         FileDescriptor fd = datagramSocket.getFileDescriptor$();
-        return fd != null ? new ParcelFileDescriptor(fd) : null;
+        try {
+            return fd != null ? ParcelFileDescriptor.dup(fd) : null;
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
     }
 
     /**
@@ -546,7 +562,7 @@
         }
         file.deactivate();
         FileDescriptor fd = file.getFileDescriptor();
-        return fd != null ? new ParcelFileDescriptor(fd) : null;
+        return fd != null ? ParcelFileDescriptor.dup(fd) : null;
     }
 
     /**
diff --git a/core/java/android/os/ParcelUuid.java b/core/java/android/os/ParcelUuid.java
index 2c68ddd..5b45ac2 100644
--- a/core/java/android/os/ParcelUuid.java
+++ b/core/java/android/os/ParcelUuid.java
@@ -16,6 +16,8 @@
 
 package android.os;
 
+import android.annotation.UnsupportedAppUsage;
+
 import java.util.UUID;
 
 /**
@@ -109,6 +111,7 @@
 
    public static final Parcelable.Creator<ParcelUuid> CREATOR =
                new Parcelable.Creator<ParcelUuid>() {
+        @UnsupportedAppUsage
         public ParcelUuid createFromParcel(Parcel source) {
             long mostSigBits = source.readLong();
             long leastSigBits = source.readLong();
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index c7afd41..64d14c0 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -498,7 +498,8 @@
                                   String[] zygoteArgs) {
         return ZYGOTE_PROCESS.start(processClass, niceName, uid, gid, gids,
                     runtimeFlags, mountExternal, targetSdkVersion, seInfo,
-                    abi, instructionSet, appDataDir, invokeWith, zygoteArgs);
+                    abi, instructionSet, appDataDir, invokeWith,
+                    /*useBlastulaPool=*/ true, zygoteArgs);
     }
 
     /** @hide */
@@ -515,7 +516,8 @@
                                   String[] zygoteArgs) {
         return WebViewZygote.getProcess().start(processClass, niceName, uid, gid, gids,
                     runtimeFlags, mountExternal, targetSdkVersion, seInfo,
-                    abi, instructionSet, appDataDir, invokeWith, zygoteArgs);
+                    abi, instructionSet, appDataDir, invokeWith,
+                    /*useBlastulaPool=*/ false, zygoteArgs);
     }
 
     /**
diff --git a/core/java/android/os/SELinux.java b/core/java/android/os/SELinux.java
index 94441ca..a96618a 100644
--- a/core/java/android/os/SELinux.java
+++ b/core/java/android/os/SELinux.java
@@ -16,6 +16,7 @@
 
 package android.os;
 
+import android.annotation.UnsupportedAppUsage;
 import android.util.Slog;
 
 import java.io.File;
@@ -69,6 +70,7 @@
      * @param path the pathname of the file object.
      * @return a security context given as a String.
      */
+    @UnsupportedAppUsage
     public static final native String getFileContext(String path);
 
     /**
diff --git a/core/java/android/os/ZygoteProcess.java b/core/java/android/os/ZygoteProcess.java
index f0bdaec..3d28a5e 100644
--- a/core/java/android/os/ZygoteProcess.java
+++ b/core/java/android/os/ZygoteProcess.java
@@ -72,6 +72,16 @@
     /**
      * @hide for internal use only
      */
+    public static final String BLASTULA_POOL_SOCKET_NAME = "blastula_pool";
+
+    /**
+     * @hide for internal use only
+     */
+    public static final String BLASTULA_POOL_SECONDARY_SOCKET_NAME = "blastula_pool_secondary";
+
+    /**
+     * @hide for internal use only
+     */
     private static final String LOG_TAG = "ZygoteProcess";
 
     /**
@@ -83,6 +93,15 @@
      * The name of the secondary (alternate ABI) zygote socket.
      */
     private final LocalSocketAddress mZygoteSecondarySocketAddress;
+    /**
+     * The name of the socket used to communicate with the primary blastula pool.
+     */
+    private final LocalSocketAddress mBlastulaPoolSocketAddress;
+
+    /**
+     * The name of the socket used to communicate with the secondary (alternate ABI) blastula pool.
+     */
+    private final LocalSocketAddress mBlastulaPoolSecondarySocketAddress;
 
     public ZygoteProcess() {
         mZygoteSocketAddress =
@@ -90,12 +109,22 @@
         mZygoteSecondarySocketAddress =
                 new LocalSocketAddress(ZYGOTE_SECONDARY_SOCKET_NAME,
                                        LocalSocketAddress.Namespace.RESERVED);
+
+        mBlastulaPoolSocketAddress =
+                new LocalSocketAddress(BLASTULA_POOL_SOCKET_NAME,
+                                       LocalSocketAddress.Namespace.RESERVED);
+        mBlastulaPoolSecondarySocketAddress =
+                new LocalSocketAddress(BLASTULA_POOL_SECONDARY_SOCKET_NAME,
+                                       LocalSocketAddress.Namespace.RESERVED);
     }
 
     public ZygoteProcess(LocalSocketAddress primarySocketAddress,
                          LocalSocketAddress secondarySocketAddress) {
         mZygoteSocketAddress = primarySocketAddress;
         mZygoteSecondarySocketAddress = secondarySocketAddress;
+
+        mBlastulaPoolSocketAddress = null;
+        mBlastulaPoolSecondarySocketAddress = null;
     }
 
     public LocalSocketAddress getPrimarySocketAddress() {
@@ -107,6 +136,7 @@
      */
     public static class ZygoteState {
         final LocalSocketAddress mZygoteSocketAddress;
+        final LocalSocketAddress mBlastulaSocketAddress;
 
         private final LocalSocket mZygoteSessionSocket;
 
@@ -118,11 +148,13 @@
         private boolean mClosed;
 
         private ZygoteState(LocalSocketAddress zygoteSocketAddress,
+                            LocalSocketAddress blastulaSocketAddress,
                             LocalSocket zygoteSessionSocket,
                             DataInputStream zygoteInputStream,
                             BufferedWriter zygoteOutputWriter,
                             List<String> abiList) {
             this.mZygoteSocketAddress = zygoteSocketAddress;
+            this.mBlastulaSocketAddress = blastulaSocketAddress;
             this.mZygoteSessionSocket = zygoteSessionSocket;
             this.mZygoteInputStream = zygoteInputStream;
             this.mZygoteOutputWriter = zygoteOutputWriter;
@@ -130,14 +162,17 @@
         }
 
         /**
-         * Create a new ZygoteState object by connecting to the given Zygote socket.
+         * Create a new ZygoteState object by connecting to the given Zygote socket and saving the
+         * given blastula socket address.
          *
          * @param zygoteSocketAddress  Zygote socket to connect to
+         * @param blastulaSocketAddress  Blastula socket address to save for later
          * @return  A new ZygoteState object containing a session socket for the given Zygote socket
          * address
          * @throws IOException
          */
-        public static ZygoteState connect(LocalSocketAddress zygoteSocketAddress)
+        public static ZygoteState connect(LocalSocketAddress zygoteSocketAddress,
+                                          LocalSocketAddress blastulaSocketAddress)
                 throws IOException {
 
             DataInputStream zygoteInputStream = null;
@@ -150,7 +185,7 @@
                 zygoteOutputWriter =
                         new BufferedWriter(
                                 new OutputStreamWriter(zygoteSessionSocket.getOutputStream()),
-                                256);
+                                Zygote.SOCKET_BUFFER_SIZE);
             } catch (IOException ex) {
                 try {
                     zygoteSessionSocket.close();
@@ -159,11 +194,18 @@
                 throw ex;
             }
 
-            return new ZygoteState(zygoteSocketAddress,
+            return new ZygoteState(zygoteSocketAddress, blastulaSocketAddress,
                                    zygoteSessionSocket, zygoteInputStream, zygoteOutputWriter,
                                    getAbiList(zygoteOutputWriter, zygoteInputStream));
         }
 
+        LocalSocket getBlastulaSessionSocket() throws IOException {
+            final LocalSocket blastulaSessionSocket = new LocalSocket();
+            blastulaSessionSocket.connect(this.mBlastulaSocketAddress);
+
+            return blastulaSessionSocket;
+        }
+
         boolean matches(String abi) {
             return mABIList.contains(abi);
         }
@@ -259,12 +301,14 @@
                                                   String instructionSet,
                                                   String appDataDir,
                                                   String invokeWith,
+                                                  boolean useBlastulaPool,
                                                   String[] zygoteArgs) {
         try {
             return startViaZygote(processClass, niceName, uid, gid, gids,
                     runtimeFlags, mountExternal, targetSdkVersion, seInfo,
                     abi, instructionSet, appDataDir, invokeWith,
-                    /*startChildZygote=*/false, zygoteArgs);
+                    /*startChildZygote=*/false,
+                    useBlastulaPool, zygoteArgs);
         } catch (ZygoteStartFailedEx ex) {
             Log.e(LOG_TAG,
                     "Starting VM process through Zygote failed");
@@ -312,59 +356,127 @@
      */
     @GuardedBy("mLock")
     private static Process.ProcessStartResult zygoteSendArgsAndGetResult(
-            ZygoteState zygoteState, ArrayList<String> args)
+            ZygoteState zygoteState, boolean useBlastulaPool, ArrayList<String> args)
             throws ZygoteStartFailedEx {
-        try {
-            // Throw early if any of the arguments are malformed. This means we can
-            // avoid writing a partial response to the zygote.
-            int sz = args.size();
-            for (int i = 0; i < sz; i++) {
-                if (args.get(i).indexOf('\n') >= 0) {
-                    throw new ZygoteStartFailedEx("embedded newlines not allowed");
+        // Throw early if any of the arguments are malformed. This means we can
+        // avoid writing a partial response to the zygote.
+        for (String arg : args) {
+            if (arg.indexOf('\n') >= 0) {
+                throw new ZygoteStartFailedEx("embedded newlines not allowed");
+            }
+        }
+
+        /**
+         * See com.android.internal.os.SystemZygoteInit.readArgumentList()
+         * Presently the wire format to the zygote process is:
+         * a) a count of arguments (argc, in essence)
+         * b) a number of newline-separated argument strings equal to count
+         *
+         * After the zygote process reads these it will write the pid of
+         * the child or -1 on failure, followed by boolean to
+         * indicate whether a wrapper process was used.
+         */
+        String msgStr = Integer.toString(args.size()) + "\n"
+                        + String.join("\n", args) + "\n";
+
+        // Should there be a timeout on this?
+        Process.ProcessStartResult result = new Process.ProcessStartResult();
+
+        // TODO (chriswailes): Move branch body into separate function.
+        if (useBlastulaPool && Zygote.BLASTULA_POOL_ENABLED && isValidBlastulaCommand(args)) {
+            LocalSocket blastulaSessionSocket = null;
+
+            try {
+                blastulaSessionSocket = zygoteState.getBlastulaSessionSocket();
+
+                final BufferedWriter blastulaWriter =
+                        new BufferedWriter(
+                                new OutputStreamWriter(blastulaSessionSocket.getOutputStream()),
+                                Zygote.SOCKET_BUFFER_SIZE);
+                final DataInputStream blastulaReader =
+                        new DataInputStream(blastulaSessionSocket.getInputStream());
+
+                blastulaWriter.write(msgStr);
+                blastulaWriter.flush();
+
+                result.pid = blastulaReader.readInt();
+                // Blastulas can't be used to spawn processes that need wrappers.
+                result.usingWrapper = false;
+
+                if (result.pid < 0) {
+                    throw new ZygoteStartFailedEx("Blastula specialization failed");
+                }
+
+                return result;
+            } catch (IOException ex) {
+                // If there was an IOException using the blastula pool we will log the error and
+                // attempt to start the process through the Zygote.
+                Log.e(LOG_TAG, "IO Exception while communicating with blastula pool - "
+                               + ex.toString());
+            } finally {
+                try {
+                    blastulaSessionSocket.close();
+                } catch (IOException ex) {
+                    Log.e(LOG_TAG, "Failed to close blastula session socket: " + ex.getMessage());
                 }
             }
+        }
 
-            /**
-             * See com.android.internal.os.SystemZygoteInit.readArgumentList()
-             * Presently the wire format to the zygote process is:
-             * a) a count of arguments (argc, in essence)
-             * b) a number of newline-separated argument strings equal to count
-             *
-             * After the zygote process reads these it will write the pid of
-             * the child or -1 on failure, followed by boolean to
-             * indicate whether a wrapper process was used.
-             */
-            final BufferedWriter writer = zygoteState.mZygoteOutputWriter;
-            final DataInputStream inputStream = zygoteState.mZygoteInputStream;
+        try {
+            final BufferedWriter zygoteWriter = zygoteState.mZygoteOutputWriter;
+            final DataInputStream zygoteInputStream = zygoteState.mZygoteInputStream;
 
-            writer.write(Integer.toString(args.size()));
-            writer.newLine();
-
-            for (int i = 0; i < sz; i++) {
-                String arg = args.get(i);
-                writer.write(arg);
-                writer.newLine();
-            }
-
-            writer.flush();
-
-            // Should there be a timeout on this?
-            Process.ProcessStartResult result = new Process.ProcessStartResult();
+            zygoteWriter.write(msgStr);
+            zygoteWriter.flush();
 
             // Always read the entire result from the input stream to avoid leaving
             // bytes in the stream for future process starts to accidentally stumble
             // upon.
-            result.pid = inputStream.readInt();
-            result.usingWrapper = inputStream.readBoolean();
-
-            if (result.pid < 0) {
-                throw new ZygoteStartFailedEx("fork() failed");
-            }
-            return result;
+            result.pid = zygoteInputStream.readInt();
+            result.usingWrapper = zygoteInputStream.readBoolean();
         } catch (IOException ex) {
             zygoteState.close();
+            Log.e(LOG_TAG, "IO Exception while communicating with Zygote - "
+                    + ex.toString());
             throw new ZygoteStartFailedEx(ex);
         }
+
+        if (result.pid < 0) {
+            throw new ZygoteStartFailedEx("fork() failed");
+        }
+
+        return result;
+    }
+
+    /**
+     * Flags that may not be passed to a blastula.
+     */
+    private static final String[] INVALID_BLASTULA_FLAGS = {
+        "--query-abi-list",
+        "--get-pid",
+        "--preload-default",
+        "--preload-package",
+        "--start-child-zygote",
+        "--set-api-blacklist-exemptions",
+        "--hidden-api-log-sampling-rate",
+        "--invoke-with"
+    };
+
+    /**
+     * Tests a command list to see if it is valid to send to a blastula.
+     * @param args  Zygote/Blastula command arguments
+     * @return  True if the command can be passed to a blastula; false otherwise
+     */
+    private static boolean isValidBlastulaCommand(ArrayList<String> args) {
+        for (String flag : args) {
+            for (String badFlag : INVALID_BLASTULA_FLAGS) {
+                if (flag.startsWith(badFlag)) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
     }
 
     /**
@@ -400,6 +512,7 @@
                                                       String appDataDir,
                                                       String invokeWith,
                                                       boolean startChildZygote,
+                                                      boolean useBlastulaPool,
                                                       String[] extraArgs)
                                                       throws ZygoteStartFailedEx {
         ArrayList<String> argsForZygote = new ArrayList<String>();
@@ -469,7 +582,9 @@
         }
 
         synchronized(mLock) {
-            return zygoteSendArgsAndGetResult(openZygoteSocketIfNeeded(abi), argsForZygote);
+            return zygoteSendArgsAndGetResult(openZygoteSocketIfNeeded(abi),
+                                              useBlastulaPool,
+                                              argsForZygote);
         }
     }
 
@@ -633,7 +748,7 @@
         if (primaryZygoteState == null || primaryZygoteState.isClosed()) {
             try {
                 primaryZygoteState =
-                    ZygoteState.connect(mZygoteSocketAddress);
+                    ZygoteState.connect(mZygoteSocketAddress, mBlastulaPoolSocketAddress);
             } catch (IOException ioe) {
                 throw new ZygoteStartFailedEx("Error connecting to primary zygote", ioe);
             }
@@ -650,7 +765,8 @@
         if (secondaryZygoteState == null || secondaryZygoteState.isClosed()) {
             try {
                 secondaryZygoteState =
-                    ZygoteState.connect(mZygoteSecondarySocketAddress);
+                    ZygoteState.connect(mZygoteSecondarySocketAddress,
+                                        mBlastulaPoolSecondarySocketAddress);
             } catch (IOException ioe) {
                 throw new ZygoteStartFailedEx("Error connecting to secondary zygote", ioe);
             }
@@ -737,7 +853,7 @@
         for (int n = 20; n >= 0; n--) {
             try {
                 final ZygoteState zs =
-                        ZygoteState.connect(zygoteSocketAddress);
+                        ZygoteState.connect(zygoteSocketAddress, null);
                 zs.close();
                 return;
             } catch (IOException ioe) {
@@ -778,7 +894,7 @@
             result = startViaZygote(processClass, niceName, uid, gid,
                     gids, runtimeFlags, 0 /* mountExternal */, 0 /* targetSdkVersion */, seInfo,
                     abi, instructionSet, null /* appDataDir */, null /* invokeWith */,
-                    true /* startChildZygote */, extraArgs);
+                    true /* startChildZygote */, false /* useBlastulaPool */, extraArgs);
         } catch (ZygoteStartFailedEx ex) {
             throw new RuntimeException("Starting child-zygote through Zygote failed", ex);
         }
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index bbd76d2..e904b07 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -5671,6 +5671,16 @@
         public static final String ALWAYS_ON_VPN_LOCKDOWN = "always_on_vpn_lockdown";
 
         /**
+         * Comma separated list of packages that are allowed to access the network when VPN is in
+         * lockdown mode but not running.
+         * @see #ALWAYS_ON_VPN_LOCKDOWN
+         *
+         * @hide
+         */
+        public static final String ALWAYS_ON_VPN_LOCKDOWN_WHITELIST =
+                "always_on_vpn_lockdown_whitelist";
+
+        /**
          * Whether applications can be installed for this user via the system's
          * {@link Intent#ACTION_INSTALL_PACKAGE} mechanism.
          *
diff --git a/core/java/com/android/internal/net/NetworkStatsFactory.java b/core/java/com/android/internal/net/NetworkStatsFactory.java
index 9bacf9b..f848346 100644
--- a/core/java/com/android/internal/net/NetworkStatsFactory.java
+++ b/core/java/com/android/internal/net/NetworkStatsFactory.java
@@ -64,6 +64,9 @@
 
     private boolean mUseBpfStats;
 
+    // A persistent Snapshot since device start for eBPF stats
+    private final NetworkStats mPersistSnapshot;
+
     // TODO: only do adjustments in NetworkStatsService and remove this.
     /**
      * (Stacked interface) -> (base interface) association for all connected ifaces since boot.
@@ -135,6 +138,7 @@
         mStatsXtIfaceFmt = new File(procRoot, "net/xt_qtaguid/iface_stat_fmt");
         mStatsXtUid = new File(procRoot, "net/xt_qtaguid/stats");
         mUseBpfStats = useBpfStats;
+        mPersistSnapshot = new NetworkStats(SystemClock.elapsedRealtime(), -1);
     }
 
     public NetworkStats readBpfNetworkStatsDev() throws IOException {
@@ -268,6 +272,7 @@
         return stats;
     }
 
+    // TODO: delete the lastStats parameter
     private NetworkStats readNetworkStatsDetailInternal(int limitUid, String[] limitIfaces,
             int limitTag, NetworkStats lastStats) throws IOException {
         if (USE_NATIVE_PARSING) {
@@ -278,16 +283,28 @@
             } else {
                 stats = new NetworkStats(SystemClock.elapsedRealtime(), -1);
             }
-            if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), limitUid,
-                    limitIfaces, limitTag, mUseBpfStats) != 0) {
-                throw new IOException("Failed to parse network stats");
+            if (mUseBpfStats) {
+                if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), UID_ALL,
+                        null, TAG_ALL, mUseBpfStats) != 0) {
+                    throw new IOException("Failed to parse network stats");
+                }
+                mPersistSnapshot.setElapsedRealtime(stats.getElapsedRealtime());
+                mPersistSnapshot.combineAllValues(stats);
+                NetworkStats result = mPersistSnapshot.clone();
+                result.filter(limitUid, limitIfaces, limitTag);
+                return result;
+            } else {
+                if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), limitUid,
+                        limitIfaces, limitTag, mUseBpfStats) != 0) {
+                    throw new IOException("Failed to parse network stats");
+                }
+                if (SANITY_CHECK_NATIVE) {
+                    final NetworkStats javaStats = javaReadNetworkStatsDetail(mStatsXtUid, limitUid,
+                            limitIfaces, limitTag);
+                    assertEquals(javaStats, stats);
+                }
+                return stats;
             }
-            if (SANITY_CHECK_NATIVE) {
-                final NetworkStats javaStats = javaReadNetworkStatsDetail(mStatsXtUid, limitUid,
-                        limitIfaces, limitTag);
-                assertEquals(javaStats, stats);
-            }
-            return stats;
         } else {
             return javaReadNetworkStatsDetail(mStatsXtUid, limitUid, limitIfaces, limitTag);
         }
diff --git a/core/java/com/android/internal/net/VpnConfig.java b/core/java/com/android/internal/net/VpnConfig.java
index fd03b3f..da8605e 100644
--- a/core/java/com/android/internal/net/VpnConfig.java
+++ b/core/java/com/android/internal/net/VpnConfig.java
@@ -28,6 +28,7 @@
 import android.net.IpPrefix;
 import android.net.LinkAddress;
 import android.net.Network;
+import android.net.ProxyInfo;
 import android.net.RouteInfo;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -104,6 +105,7 @@
     public boolean allowIPv4;
     public boolean allowIPv6;
     public Network[] underlyingNetworks;
+    public ProxyInfo proxyInfo;
 
     public void updateAllowedFamilies(InetAddress address) {
         if (address instanceof Inet4Address) {
@@ -164,6 +166,7 @@
         out.writeInt(allowIPv4 ? 1 : 0);
         out.writeInt(allowIPv6 ? 1 : 0);
         out.writeTypedArray(underlyingNetworks, flags);
+        out.writeParcelable(proxyInfo, flags);
     }
 
     public static final Parcelable.Creator<VpnConfig> CREATOR =
@@ -189,6 +192,7 @@
             config.allowIPv4 = in.readInt() != 0;
             config.allowIPv6 = in.readInt() != 0;
             config.underlyingNetworks = in.createTypedArray(Network.CREATOR);
+            config.proxyInfo = in.readParcelable(null);
             return config;
         }
 
@@ -220,6 +224,7 @@
                 .append(", allowIPv4=").append(allowIPv4)
                 .append(", allowIPv6=").append(allowIPv6)
                 .append(", underlyingNetworks=").append(Arrays.toString(underlyingNetworks))
+                .append(", proxyInfo=").append(proxyInfo.toString())
                 .append("}")
                 .toString();
     }
diff --git a/core/java/com/android/internal/net/VpnInfo.java b/core/java/com/android/internal/net/VpnInfo.java
index a676dac..b1a41287 100644
--- a/core/java/com/android/internal/net/VpnInfo.java
+++ b/core/java/com/android/internal/net/VpnInfo.java
@@ -32,11 +32,11 @@
 
     @Override
     public String toString() {
-        return "VpnInfo{" +
-                "ownerUid=" + ownerUid +
-                ", vpnIface='" + vpnIface + '\'' +
-                ", primaryUnderlyingIface='" + primaryUnderlyingIface + '\'' +
-                '}';
+        return "VpnInfo{"
+                + "ownerUid=" + ownerUid
+                + ", vpnIface='" + vpnIface + '\''
+                + ", primaryUnderlyingIface='" + primaryUnderlyingIface + '\''
+                + '}';
     }
 
     @Override
diff --git a/core/java/com/android/internal/os/Zygote.java b/core/java/com/android/internal/os/Zygote.java
index 382542a..3859b95 100644
--- a/core/java/com/android/internal/os/Zygote.java
+++ b/core/java/com/android/internal/os/Zygote.java
@@ -16,9 +16,13 @@
 
 package com.android.internal.os;
 
+import static android.system.OsConstants.O_CLOEXEC;
+
 import static com.android.internal.os.ZygoteConnectionConstants.MAX_ZYGOTE_ARGC;
 
 import android.net.Credentials;
+import android.net.LocalServerSocket;
+import android.net.LocalSocket;
 import android.os.FactoryTest;
 import android.os.IVold;
 import android.os.Process;
@@ -30,8 +34,14 @@
 
 import dalvik.system.ZygoteHooks;
 
+import libcore.io.IoUtils;
+
 import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.FileDescriptor;
 import java.io.IOException;
+import java.io.InputStreamReader;
 
 /** @hide */
 public final class Zygote {
@@ -92,6 +102,24 @@
     /** Read-write external storage should be mounted. */
     public static final int MOUNT_EXTERNAL_WRITE = IVold.REMOUNT_MODE_WRITE;
 
+    /** Number of bytes sent to the Zygote over blastula pipes or the pool event FD */
+    public static final int BLASTULA_MANAGEMENT_MESSAGE_BYTES = 8;
+
+    /**
+     * If the blastula pool should be created and used to start applications.
+     *
+     * Setting this value to false will disable the creation, maintenance, and use of the blastula
+     * pool.  When the blastula pool is disabled the application lifecycle will be identical to
+     * previous versions of Android.
+     */
+    public static final boolean BLASTULA_POOL_ENABLED = false;
+
+    /**
+     * File descriptor used for communication between the signal handler and the ZygoteServer poll
+     * loop.
+     * */
+    protected static FileDescriptor sBlastulaPoolEventFD;
+
     private static final ZygoteHooks VM_HOOKS = new ZygoteHooks();
 
     /**
@@ -101,6 +129,45 @@
      */
     public static final String CHILD_ZYGOTE_SOCKET_NAME_ARG = "--zygote-socket=";
 
+    /** Prefix prepended to socket names created by init */
+    private static final String ANDROID_SOCKET_PREFIX = "ANDROID_SOCKET_";
+
+    /**
+     * The maximum value that the sBlastulaPoolMax variable may take.  This value
+     * is a mirror of BLASTULA_POOL_MAX_LIMIT found in com_android_internal_os_Zygote.cpp.
+     */
+    static final int BLASTULA_POOL_MAX_LIMIT = 10;
+
+    /**
+     * The minimum value that the sBlastulaPoolMin variable may take.
+     */
+    static final int BLASTULA_POOL_MIN_LIMIT = 1;
+
+    /**
+     * The runtime-adjustable maximum Blastula pool size.
+     */
+    static int sBlastulaPoolMax = BLASTULA_POOL_MAX_LIMIT;
+
+    /**
+     * The runtime-adjustable minimum Blastula pool size.
+     */
+    static int sBlastulaPoolMin = BLASTULA_POOL_MIN_LIMIT;
+
+    /**
+     * The runtime-adjustable value used to determine when to re-fill the
+     * blastula pool.  The pool will be re-filled when
+     * (sBlastulaPoolMax - gBlastulaPoolCount) >= sBlastulaPoolRefillThreshold.
+     */
+    // TODO (chriswailes): This must be updated at the same time as sBlastulaPoolMax.
+    static int sBlastulaPoolRefillThreshold = (sBlastulaPoolMax / 2);
+
+    /**
+     * @hide for internal use only
+     */
+    public static final int SOCKET_BUFFER_SIZE = 256;
+
+    private static LocalServerSocket sBlastulaPoolSocket = null;
+
     /** a prototype instance for a future List.toArray() */
     protected static final int[][] INT_ARRAY_2D = new int[0][0];
 
@@ -168,6 +235,49 @@
             int[] fdsToClose, int[] fdsToIgnore, boolean startChildZygote, String instructionSet,
             String appDataDir);
 
+    /**
+     * Specialize a Blastula instance.  The current VM must have been started
+     * with the -Xzygote flag.
+     *
+     * @param uid  The UNIX uid that the new process should setuid() to before spawning any threads
+     * @param gid  The UNIX gid that the new process should setgid() to before spawning any threads
+     * @param gids null-ok;  A list of UNIX gids that the new process should
+     * setgroups() to before spawning any threads
+     * @param runtimeFlags  Bit flags that enable ART features
+     * @param rlimits null-ok  An array of rlimit tuples, with the second
+     * dimension having a length of 3 and representing
+     * (resource, rlim_cur, rlim_max). These are set via the posix
+     * setrlimit(2) call.
+     * @param seInfo null-ok  A string specifying SELinux information for
+     * the new process.
+     * @param niceName null-ok  A string specifying the process name.
+     * @param startChildZygote  If true, the new child process will itself be a
+     * new zygote process.
+     * @param instructionSet null-ok  The instruction set to use.
+     * @param appDataDir null-ok  The data directory of the app.
+     */
+    public static void specializeBlastula(int uid, int gid, int[] gids, int runtimeFlags,
+            int[][] rlimits, int mountExternal, String seInfo, String niceName,
+            boolean startChildZygote, String instructionSet, String appDataDir) {
+
+        nativeSpecializeBlastula(uid, gid, gids, runtimeFlags, rlimits, mountExternal, seInfo,
+                                 niceName, startChildZygote, instructionSet, appDataDir);
+
+        // Enable tracing as soon as possible for the child process.
+        Trace.setTracingEnabled(true, runtimeFlags);
+
+        // Note that this event ends at the end of handleChildProc.
+        Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "PostFork");
+
+        /*
+         * This is called here (instead of after the fork but before the specialize) to maintain
+         * consistancy with the code paths for forkAndSpecialize.
+         *
+         * TODO (chriswailes): Look into moving this to immediately after the fork.
+         */
+        VM_HOOKS.postForkCommon();
+    }
+
     private static native void nativeSpecializeBlastula(int uid, int gid, int[] gids,
             int runtimeFlags, int[][] rlimits, int mountExternal, String seInfo, String niceName,
             boolean startChildZygote, String instructionSet, String appDataDir);
@@ -230,18 +340,295 @@
      */
     protected static native void nativeUnmountStorageOnInit();
 
+    /**
+     * Get socket file descriptors (opened by init) from the environment and
+     * store them for access from native code later.
+     *
+     * @param isPrimary  True if this is the zygote process, false if it is zygote_secondary
+     */
+    public static void getSocketFDs(boolean isPrimary) {
+        nativeGetSocketFDs(isPrimary);
+    }
+
     protected static native void nativeGetSocketFDs(boolean isPrimary);
 
+    /**
+     * Initialize the blastula pool and fill it with the desired number of
+     * processes.
+     */
+    protected static Runnable initBlastulaPool() {
+        if (BLASTULA_POOL_ENABLED) {
+            sBlastulaPoolEventFD = getBlastulaPoolEventFD();
+
+            return fillBlastulaPool(null);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Checks to see if the current policy says that pool should be refilled, and spawns new
+     * blastulas if necessary.
+     *
+     * NOTE: This function doesn't need to be guarded with BLASTULA_POOL_ENABLED because it is
+     *       only called from contexts that are only valid if the pool is enabled.
+     *
+     * @param sessionSocketRawFDs  Anonymous session sockets that are currently open
+     * @return In the Zygote process this function will always return null; in blastula processes
+     *         this function will return a Runnable object representing the new application that is
+     *         passed up from blastulaMain.
+     */
+    protected static Runnable fillBlastulaPool(int[] sessionSocketRawFDs) {
+        Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "Zygote:FillBlastulaPool");
+
+        int blastulaPoolCount = getBlastulaPoolCount();
+
+        int numBlastulasToSpawn = sBlastulaPoolMax - blastulaPoolCount;
+
+        if (blastulaPoolCount < sBlastulaPoolMin
+                || numBlastulasToSpawn >= sBlastulaPoolRefillThreshold) {
+
+            // Disable some VM functionality and reset some system values
+            // before forking.
+            VM_HOOKS.preFork();
+            resetNicePriority();
+
+            while (blastulaPoolCount++ < sBlastulaPoolMax) {
+                Runnable caller = forkBlastula(sessionSocketRawFDs);
+
+                if (caller != null) {
+                    return caller;
+                }
+            }
+
+            // Re-enable runtime services for the Zygote.  Blastula services
+            // are re-enabled in specializeBlastula.
+            VM_HOOKS.postForkCommon();
+
+            Log.i("zygote", "Filled the blastula pool. New blastulas: " + numBlastulasToSpawn);
+        }
+
+        Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
+
+        return null;
+    }
+
+    /**
+     * @return Number of blastulas currently in the pool
+     */
+    private static int getBlastulaPoolCount() {
+        return nativeGetBlastulaPoolCount();
+    }
+
     private static native int nativeGetBlastulaPoolCount();
 
+    /**
+     * @return The event FD used for communication between the signal handler and the ZygoteServer
+     *         poll loop
+     */
+    private static FileDescriptor getBlastulaPoolEventFD() {
+        FileDescriptor fd = new FileDescriptor();
+        fd.setInt$(nativeGetBlastulaPoolEventFD());
+
+        return fd;
+    }
+
     private static native int nativeGetBlastulaPoolEventFD();
 
+    /**
+     * Fork a new blastula process from the zygote
+     *
+     * @param sessionSocketRawFDs  Anonymous session sockets that are currently open
+     * @return In the Zygote process this function will always return null; in blastula processes
+     *         this function will return a Runnable object representing the new application that is
+     *         passed up from blastulaMain.
+     */
+    private static Runnable forkBlastula(int[] sessionSocketRawFDs) {
+        FileDescriptor[] pipeFDs = null;
+
+        try {
+            pipeFDs = Os.pipe2(O_CLOEXEC);
+        } catch (ErrnoException errnoEx) {
+            throw new IllegalStateException("Unable to create blastula pipe.", errnoEx);
+        }
+
+        int pid =
+                nativeForkBlastula(pipeFDs[0].getInt$(), pipeFDs[1].getInt$(), sessionSocketRawFDs);
+
+        if (pid == 0) {
+            IoUtils.closeQuietly(pipeFDs[0]);
+            return blastulaMain(pipeFDs[1]);
+        } else {
+            // The read-end of the pipe will be closed by the native code.
+            // See removeBlastulaTableEntry();
+            IoUtils.closeQuietly(pipeFDs[1]);
+            return null;
+        }
+    }
+
     private static native int nativeForkBlastula(int readPipeFD,
                                                  int writePipeFD,
                                                  int[] sessionSocketRawFDs);
 
+    /**
+     * This function is used by blastulas to wait for specialization requests from the system
+     * server.
+     *
+     * @param writePipe  The write end of the reporting pipe used to communicate with the poll loop
+     *                   of the ZygoteServer.
+     * @return A runnable oject representing the new application.
+     */
+    static Runnable blastulaMain(FileDescriptor writePipe) {
+        final int pid = Process.myPid();
+
+        LocalSocket sessionSocket = null;
+        DataOutputStream blastulaOutputStream = null;
+        Credentials peerCredentials = null;
+        String[] argStrings = null;
+
+        while (true) {
+            try {
+                sessionSocket = sBlastulaPoolSocket.accept();
+
+                BufferedReader blastulaReader =
+                        new BufferedReader(new InputStreamReader(sessionSocket.getInputStream()));
+                blastulaOutputStream =
+                        new DataOutputStream(sessionSocket.getOutputStream());
+
+                peerCredentials = sessionSocket.getPeerCredentials();
+
+                argStrings = readArgumentList(blastulaReader);
+
+                if (argStrings != null) {
+                    break;
+                } else {
+                    Log.e("Blastula", "Truncated command received.");
+                    IoUtils.closeQuietly(sessionSocket);
+                }
+            } catch (IOException ioEx) {
+                Log.e("Blastula", "Failed to read command: " + ioEx.getMessage());
+                IoUtils.closeQuietly(sessionSocket);
+            }
+        }
+
+        ZygoteArguments args = new ZygoteArguments(argStrings);
+
+        // TODO (chriswailes): Should this only be run for debug builds?
+        validateBlastulaCommand(args);
+
+        applyUidSecurityPolicy(args, peerCredentials);
+        applyDebuggerSystemProperty(args);
+
+        int[][] rlimits = null;
+
+        if (args.mRLimits != null) {
+            rlimits = args.mRLimits.toArray(INT_ARRAY_2D);
+        }
+
+        // This must happen before the SELinux policy for this process is
+        // changed when specializing.
+        try {
+             // Used by ZygoteProcess.zygoteSendArgsAndGetResult to fill in a
+             // Process.ProcessStartResult object.
+            blastulaOutputStream.writeInt(pid);
+        } catch (IOException ioEx) {
+            Log.e("Blastula", "Failed to write response to session socket: " + ioEx.getMessage());
+            System.exit(-1);
+        } finally {
+            IoUtils.closeQuietly(sessionSocket);
+            IoUtils.closeQuietly(sBlastulaPoolSocket);
+        }
+
+        try {
+            ByteArrayOutputStream buffer =
+                    new ByteArrayOutputStream(Zygote.BLASTULA_MANAGEMENT_MESSAGE_BYTES);
+            DataOutputStream outputStream = new DataOutputStream(buffer);
+
+            // This is written as a long so that the blastula reporting pipe and blastula pool
+            // event FD handlers in ZygoteServer.runSelectLoop can be unified.  These two cases
+            // should both send/receive 8 bytes.
+            outputStream.writeLong(pid);
+            outputStream.flush();
+
+            Os.write(writePipe, buffer.toByteArray(), 0, buffer.size());
+        } catch (Exception ex) {
+            Log.e("Blastula",
+                    String.format("Failed to write PID (%d) to pipe (%d): %s",
+                            pid, writePipe.getInt$(), ex.getMessage()));
+            System.exit(-1);
+        } finally {
+            IoUtils.closeQuietly(writePipe);
+        }
+
+        specializeBlastula(args.mUid, args.mGid, args.mGids,
+                           args.mRuntimeFlags, rlimits, args.mMountExternal,
+                           args.mSeInfo, args.mNiceName, args.mStartChildZygote,
+                           args.mInstructionSet, args.mAppDataDir);
+
+        if (args.mNiceName != null) {
+            Process.setArgV0(args.mNiceName);
+        }
+
+        // End of the postFork event.
+        Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
+
+        return ZygoteInit.zygoteInit(args.mTargetSdkVersion,
+                                     args.mRemainingArgs,
+                                     null /* classLoader */);
+    }
+
+    private static final String BLASTULA_ERROR_PREFIX = "Invalid command to blastula: ";
+
+    /**
+     * Checks a set of zygote arguments to see if they can be handled by a blastula.  Throws an
+     * exception if an invalid arugment is encountered.
+     * @param args  The arguments to test
+     */
+    static void validateBlastulaCommand(ZygoteArguments args) {
+        if (args.mAbiListQuery) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--query-abi-list");
+        } else if (args.mPidQuery) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--get-pid");
+        } else if (args.mPreloadDefault) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--preload-default");
+        } else if (args.mPreloadPackage != null) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--preload-package");
+        } else if (args.mStartChildZygote) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--start-child-zygote");
+        } else if (args.mApiBlacklistExemptions != null) {
+            throw new IllegalArgumentException(
+                BLASTULA_ERROR_PREFIX + "--set-api-blacklist-exemptions");
+        } else if (args.mHiddenApiAccessLogSampleRate != -1) {
+            throw new IllegalArgumentException(
+                BLASTULA_ERROR_PREFIX + "--hidden-api-log-sampling-rate=");
+        } else if (args.mInvokeWith != null) {
+            throw new IllegalArgumentException(BLASTULA_ERROR_PREFIX + "--invoke-with");
+        } else if (args.mPermittedCapabilities != 0 || args.mEffectiveCapabilities != 0) {
+            throw new ZygoteSecurityException("Client may not specify capabilities: "
+                + "permitted=0x" + Long.toHexString(args.mPermittedCapabilities)
+                + ", effective=0x" + Long.toHexString(args.mEffectiveCapabilities));
+        }
+    }
+
+    /**
+     * @return  Raw file descriptors for the read-end of blastula reporting pipes.
+     */
+    protected static int[] getBlastulaPipeFDs() {
+        return nativeGetBlastulaPipeFDs();
+    }
+
     private static native int[] nativeGetBlastulaPipeFDs();
 
+    /**
+     * Remove the blastula table entry for the provided process ID.
+     *
+     * @param blastulaPID  Process ID of the entry to remove
+     * @return True if the entry was removed; false if it doesn't exist
+     */
+    protected static boolean removeBlastulaTableEntry(int blastulaPID) {
+        return nativeRemoveBlastulaTableEntry(blastulaPID);
+    }
+
     private static native boolean nativeRemoveBlastulaTableEntry(int blastulaPID);
 
     /**
@@ -385,6 +772,48 @@
         return args;
     }
 
+    /**
+     * Creates a managed object representing the Blastula pool socket that has
+     * already been initialized and bound by init.
+     *
+     * TODO (chriswailes): Move the name selection logic into this function.
+     *
+     * @throws RuntimeException when open fails
+     */
+    static void createBlastulaSocket(String socketName) {
+        if (BLASTULA_POOL_ENABLED && sBlastulaPoolSocket == null) {
+            sBlastulaPoolSocket = createManagedSocketFromInitSocket(socketName);
+        }
+    }
+
+    /**
+     * Creates a managed LocalServerSocket object using a file descriptor
+     * created by an init.rc script.  The init scripts that specify the
+     * sockets name can be found in system/core/rootdir.  The socket is bound
+     * to the file system in the /dev/sockets/ directory, and the file
+     * descriptor is shared via the ANDROID_SOCKET_<socketName> environment
+     * variable.
+     */
+    static LocalServerSocket createManagedSocketFromInitSocket(String socketName) {
+        int fileDesc;
+        final String fullSocketName = ANDROID_SOCKET_PREFIX + socketName;
+
+        try {
+            String env = System.getenv(fullSocketName);
+            fileDesc = Integer.parseInt(env);
+        } catch (RuntimeException ex) {
+            throw new RuntimeException("Socket unset or invalid: " + fullSocketName, ex);
+        }
+
+        try {
+            FileDescriptor fd = new FileDescriptor();
+            fd.setInt$(fileDesc);
+            return new LocalServerSocket(fd);
+        } catch (IOException ex) {
+            throw new RuntimeException(
+                "Error building socket from file descriptor: " + fileDesc, ex);
+        }
+    }
 
     private static void callPostForkSystemServerHooks() {
         // SystemServer specific post fork hooks run before child post fork hooks.
diff --git a/core/java/com/android/internal/os/ZygoteConnection.java b/core/java/com/android/internal/os/ZygoteConnection.java
index 43f114f..ab356a6 100644
--- a/core/java/com/android/internal/os/ZygoteConnection.java
+++ b/core/java/com/android/internal/os/ZygoteConnection.java
@@ -224,7 +224,7 @@
             fdsToClose[0] = fd.getInt$();
         }
 
-        fd = zygoteServer.getServerSocketFileDescriptor();
+        fd = zygoteServer.getZygoteSocketFileDescriptor();
 
         if (fd != null) {
             fdsToClose[1] = fd.getInt$();
diff --git a/core/java/com/android/internal/os/ZygoteInit.java b/core/java/com/android/internal/os/ZygoteInit.java
index 2f00c07..e3e55ed 100644
--- a/core/java/com/android/internal/os/ZygoteInit.java
+++ b/core/java/com/android/internal/os/ZygoteInit.java
@@ -269,7 +269,7 @@
 
         try {
             BufferedReader br =
-                    new BufferedReader(new InputStreamReader(is), 256);
+                    new BufferedReader(new InputStreamReader(is), Zygote.SOCKET_BUFFER_SIZE);
 
             int count = 0;
             String line;
@@ -750,7 +750,7 @@
             throw new RuntimeException("Failed to setpgid(0,0)", ex);
         }
 
-        final Runnable caller;
+        Runnable caller;
         try {
             // Report Zygote start time to tron unless it is a runtime restart
             if (!"1".equals(SystemProperties.get("sys.boot_completed"))) {
@@ -786,7 +786,17 @@
                 throw new RuntimeException("No ABI list supplied.");
             }
 
-            zygoteServer.registerServerSocketFromEnv(socketName);
+            // TODO (chriswailes): Wrap these three calls in a helper function?
+            final String blastulaSocketName =
+                    socketName.equals(ZygoteProcess.ZYGOTE_SOCKET_NAME)
+                            ? ZygoteProcess.BLASTULA_POOL_SOCKET_NAME
+                            : ZygoteProcess.BLASTULA_POOL_SECONDARY_SOCKET_NAME;
+
+            zygoteServer.createZygoteSocket(socketName);
+            Zygote.createBlastulaSocket(blastulaSocketName);
+
+            Zygote.getSocketFDs(socketName.equals(ZygoteProcess.ZYGOTE_SOCKET_NAME));
+
             // In some configurations, we avoid preloading resources and classes eagerly.
             // In such cases, we will preload things prior to our first fork.
             if (!enableLazyPreload) {
@@ -829,11 +839,18 @@
                 }
             }
 
-            Log.i(TAG, "Accepting command socket connections");
+            // If the return value is null then this is the zygote process
+            // returning to the normal control flow.  If it returns a Runnable
+            // object then this is a blastula that has finished specializing.
+            caller = Zygote.initBlastulaPool();
 
-            // The select loop returns early in the child process after a fork and
-            // loops forever in the zygote.
-            caller = zygoteServer.runSelectLoop(abiList);
+            if (caller == null) {
+                Log.i(TAG, "Accepting command socket connections");
+
+                // The select loop returns early in the child process after a fork and
+                // loops forever in the zygote.
+                caller = zygoteServer.runSelectLoop(abiList);
+            }
         } catch (Throwable ex) {
             Log.e(TAG, "System zygote died with exception", ex);
             throw ex;
diff --git a/core/java/com/android/internal/os/ZygoteServer.java b/core/java/com/android/internal/os/ZygoteServer.java
index c1bfde1..680d649 100644
--- a/core/java/com/android/internal/os/ZygoteServer.java
+++ b/core/java/com/android/internal/os/ZygoteServer.java
@@ -26,6 +26,8 @@
 import android.util.Log;
 import android.util.Slog;
 
+import java.io.ByteArrayInputStream;
+import java.io.DataInputStream;
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -40,18 +42,17 @@
  * client protocol.
  */
 class ZygoteServer {
+    // TODO (chriswailes): Change this so it is set with Zygote or ZygoteSecondary as appropriate
     public static final String TAG = "ZygoteServer";
 
-    private static final String ANDROID_SOCKET_PREFIX = "ANDROID_SOCKET_";
-
     /**
      * Listening socket that accepts new server connections.
      */
-    private LocalServerSocket mServerSocket;
+    private LocalServerSocket mZygoteSocket;
 
     /**
-     * Whether or not mServerSocket's underlying FD should be closed directly.
-     * If mServerSocket is created with an existing FD, closing the socket does
+     * Whether or not mZygoteSocket's underlying FD should be closed directly.
+     * If mZygoteSocket is created with an existing FD, closing the socket does
      * not close the FD and it must be closed explicitly. If the socket is created
      * with a name instead, then closing the socket will close the underlying FD
      * and it should not be double-closed.
@@ -70,31 +71,17 @@
     }
 
     /**
-     * Registers a server socket for zygote command connections. This locates the server socket
-     * file descriptor through an ANDROID_SOCKET_ environment variable.
+     * Creates a managed object representing the Zygote socket that has already
+     * been initialized and bound by init.
+     *
+     * TODO (chriswailes): Move the name selection logic into this function.
      *
      * @throws RuntimeException when open fails
      */
-    void registerServerSocketFromEnv(String socketName) {
-        if (mServerSocket == null) {
-            int fileDesc;
-            final String fullSocketName = ANDROID_SOCKET_PREFIX + socketName;
-            try {
-                String env = System.getenv(fullSocketName);
-                fileDesc = Integer.parseInt(env);
-            } catch (RuntimeException ex) {
-                throw new RuntimeException(fullSocketName + " unset or invalid", ex);
-            }
-
-            try {
-                FileDescriptor fd = new FileDescriptor();
-                fd.setInt$(fileDesc);
-                mServerSocket = new LocalServerSocket(fd);
-                mCloseSocketFd = true;
-            } catch (IOException ex) {
-                throw new RuntimeException(
-                        "Error binding to local socket '" + fileDesc + "'", ex);
-            }
+    void createZygoteSocket(String socketName) {
+        if (mZygoteSocket == null) {
+            mZygoteSocket = Zygote.createManagedSocketFromInitSocket(socketName);
+            mCloseSocketFd = true;
         }
     }
 
@@ -103,9 +90,9 @@
      * at the specified name in the abstract socket namespace.
      */
     void registerServerSocketAtAbstractName(String socketName) {
-        if (mServerSocket == null) {
+        if (mZygoteSocket == null) {
             try {
-                mServerSocket = new LocalServerSocket(socketName);
+                mZygoteSocket = new LocalServerSocket(socketName);
                 mCloseSocketFd = false;
             } catch (IOException ex) {
                 throw new RuntimeException(
@@ -120,7 +107,7 @@
      */
     private ZygoteConnection acceptCommandPeer(String abiList) {
         try {
-            return createNewConnection(mServerSocket.accept(), abiList);
+            return createNewConnection(mZygoteSocket.accept(), abiList);
         } catch (IOException ex) {
             throw new RuntimeException(
                     "IOException during accept()", ex);
@@ -138,9 +125,9 @@
      */
     void closeServerSocket() {
         try {
-            if (mServerSocket != null) {
-                FileDescriptor fd = mServerSocket.getFileDescriptor();
-                mServerSocket.close();
+            if (mZygoteSocket != null) {
+                FileDescriptor fd = mZygoteSocket.getFileDescriptor();
+                mZygoteSocket.close();
                 if (fd != null && mCloseSocketFd) {
                     Os.close(fd);
                 }
@@ -151,7 +138,7 @@
             Log.e(TAG, "Zygote:  error closing descriptor", ex);
         }
 
-        mServerSocket = null;
+        mZygoteSocket = null;
     }
 
     /**
@@ -160,8 +147,8 @@
      * closure after a child process is forked off.
      */
 
-    FileDescriptor getServerSocketFileDescriptor() {
-        return mServerSocket.getFileDescriptor();
+    FileDescriptor getZygoteSocketFileDescriptor() {
+        return mZygoteSocket.getFileDescriptor();
     }
 
     /**
@@ -170,36 +157,67 @@
      * worth at a time.
      */
     Runnable runSelectLoop(String abiList) {
-        ArrayList<FileDescriptor> fds = new ArrayList<FileDescriptor>();
+        ArrayList<FileDescriptor> socketFDs = new ArrayList<FileDescriptor>();
         ArrayList<ZygoteConnection> peers = new ArrayList<ZygoteConnection>();
 
-        fds.add(mServerSocket.getFileDescriptor());
+        socketFDs.add(mZygoteSocket.getFileDescriptor());
         peers.add(null);
 
         while (true) {
-            StructPollfd[] pollFds = new StructPollfd[fds.size()];
-            for (int i = 0; i < pollFds.length; ++i) {
-                pollFds[i] = new StructPollfd();
-                pollFds[i].fd = fds.get(i);
-                pollFds[i].events = (short) POLLIN;
+            int[] blastulaPipeFDs = Zygote.getBlastulaPipeFDs();
+
+            // Space for all of the socket FDs, the Blastula Pool Event FD, and
+            // all of the open blastula read pipe FDs.
+            StructPollfd[] pollFDs =
+                new StructPollfd[socketFDs.size() + 1 + blastulaPipeFDs.length];
+
+            int pollIndex = 0;
+            for (FileDescriptor socketFD : socketFDs) {
+                pollFDs[pollIndex] = new StructPollfd();
+                pollFDs[pollIndex].fd = socketFD;
+                pollFDs[pollIndex].events = (short) POLLIN;
+                ++pollIndex;
             }
+
+            final int blastulaPoolEventFDIndex = pollIndex;
+            pollFDs[pollIndex] = new StructPollfd();
+            pollFDs[pollIndex].fd = Zygote.sBlastulaPoolEventFD;
+            pollFDs[pollIndex].events = (short) POLLIN;
+            ++pollIndex;
+
+            for (int blastulaPipeFD : blastulaPipeFDs) {
+                FileDescriptor managedFd = new FileDescriptor();
+                managedFd.setInt$(blastulaPipeFD);
+
+                pollFDs[pollIndex] = new StructPollfd();
+                pollFDs[pollIndex].fd = managedFd;
+                pollFDs[pollIndex].events = (short) POLLIN;
+                ++pollIndex;
+            }
+
             try {
-                Os.poll(pollFds, -1);
+                Os.poll(pollFDs, -1);
             } catch (ErrnoException ex) {
                 throw new RuntimeException("poll failed", ex);
             }
-            for (int i = pollFds.length - 1; i >= 0; --i) {
-                if ((pollFds[i].revents & POLLIN) == 0) {
+
+            while (--pollIndex >= 0) {
+                if ((pollFDs[pollIndex].revents & POLLIN) == 0) {
                     continue;
                 }
 
-                if (i == 0) {
+                if (pollIndex == 0) {
+                    // Zygote server socket
+
                     ZygoteConnection newPeer = acceptCommandPeer(abiList);
                     peers.add(newPeer);
-                    fds.add(newPeer.getFileDescriptor());
-                } else {
+                    socketFDs.add(newPeer.getFileDescriptor());
+
+                } else if (pollIndex < blastulaPoolEventFDIndex) {
+                    // Session socket accepted from the Zygote server socket
+
                     try {
-                        ZygoteConnection connection = peers.get(i);
+                        ZygoteConnection connection = peers.get(pollIndex);
                         final Runnable command = connection.processOneCommand(this);
 
                         if (mIsForkChild) {
@@ -217,12 +235,12 @@
                             }
 
                             // We don't know whether the remote side of the socket was closed or
-                            // not until we attempt to read from it from processOneCommand. This shows up as
-                            // a regular POLLIN event in our regular processing loop.
+                            // not until we attempt to read from it from processOneCommand. This
+                            // shows up as a regular POLLIN event in our regular processing loop.
                             if (connection.isClosedByPeer()) {
                                 connection.closeSocket();
-                                peers.remove(i);
-                                fds.remove(i);
+                                peers.remove(pollIndex);
+                                socketFDs.remove(pollIndex);
                             }
                         }
                     } catch (Exception e) {
@@ -234,13 +252,13 @@
 
                             Slog.e(TAG, "Exception executing zygote command: ", e);
 
-                            // Make sure the socket is closed so that the other end knows immediately
-                            // that something has gone wrong and doesn't time out waiting for a
-                            // response.
-                            ZygoteConnection conn = peers.remove(i);
+                            // Make sure the socket is closed so that the other end knows
+                            // immediately that something has gone wrong and doesn't time out
+                            // waiting for a response.
+                            ZygoteConnection conn = peers.remove(pollIndex);
                             conn.closeSocket();
 
-                            fds.remove(i);
+                            socketFDs.remove(pollIndex);
                         } else {
                             // We're in the child so any exception caught here has happened post
                             // fork and before we execute ActivityThread.main (or any other main()
@@ -254,6 +272,55 @@
                         // is returned.
                         mIsForkChild = false;
                     }
+                } else {
+                    // Either the blastula pool event FD or a blastula reporting pipe.
+
+                    // If this is the event FD the payload will be the number of blastulas removed.
+                    // If this is a reporting pipe FD the payload will be the PID of the blastula
+                    // that was just specialized.
+                    long messagePayload = -1;
+
+                    try {
+                        byte[] buffer = new byte[Zygote.BLASTULA_MANAGEMENT_MESSAGE_BYTES];
+                        int readBytes = Os.read(pollFDs[pollIndex].fd, buffer, 0, buffer.length);
+
+                        if (readBytes == Zygote.BLASTULA_MANAGEMENT_MESSAGE_BYTES) {
+                            DataInputStream inputStream =
+                                    new DataInputStream(new ByteArrayInputStream(buffer));
+
+                            messagePayload = inputStream.readLong();
+                        } else {
+                            Log.e(TAG, "Incomplete read from blastula management FD of size "
+                                    + readBytes);
+                            continue;
+                        }
+                    } catch (Exception ex) {
+                        if (pollIndex == blastulaPoolEventFDIndex) {
+                            Log.e(TAG, "Failed to read from blastula pool event FD: "
+                                    + ex.getMessage());
+                        } else {
+                            Log.e(TAG, "Failed to read from blastula reporting pipe: "
+                                    + ex.getMessage());
+                        }
+
+                        continue;
+                    }
+
+                    if (pollIndex > blastulaPoolEventFDIndex) {
+                        Zygote.removeBlastulaTableEntry((int) messagePayload);
+                    }
+
+                    int[] sessionSocketRawFDs =
+                            socketFDs.subList(1, socketFDs.size())
+                                    .stream()
+                                    .mapToInt(fd -> fd.getInt$())
+                                    .toArray();
+
+                    final Runnable command = Zygote.fillBlastulaPool(sessionSocketRawFDs);
+
+                    if (command != null) {
+                        return command;
+                    }
                 }
             }
         }
diff --git a/core/java/com/android/internal/util/StateMachine.java b/core/java/com/android/internal/util/StateMachine.java
index e5ad1f4..7398e95 100644
--- a/core/java/com/android/internal/util/StateMachine.java
+++ b/core/java/com/android/internal/util/StateMachine.java
@@ -16,6 +16,7 @@
 
 package com.android.internal.util;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Looper;
@@ -1354,6 +1355,7 @@
      * Add a new state to the state machine, parent will be null
      * @param state to add
      */
+    @UnsupportedAppUsage
     public final void addState(State state) {
         mSmHandler.addState(state, null);
     }
@@ -1372,6 +1374,7 @@
      *
      * @param initialState is the state which will receive the first message.
      */
+    @UnsupportedAppUsage
     public final void setInitialState(State initialState) {
         mSmHandler.setInitialState(initialState);
     }
@@ -1410,6 +1413,7 @@
      *
      * @param destState will be the state that receives the next message.
      */
+    @UnsupportedAppUsage
     public final void transitionTo(IState destState) {
         mSmHandler.transitionTo(destState);
     }
@@ -2053,6 +2057,7 @@
     /**
      * Start the state machine.
      */
+    @UnsupportedAppUsage
     public void start() {
         // mSmHandler can be null if the state machine has quit.
         SmHandler smh = mSmHandler;
diff --git a/core/jni/android/graphics/BitmapFactory.cpp b/core/jni/android/graphics/BitmapFactory.cpp
index 03a463e..e344f2a 100644
--- a/core/jni/android/graphics/BitmapFactory.cpp
+++ b/core/jni/android/graphics/BitmapFactory.cpp
@@ -551,7 +551,7 @@
     // if we only close the file descriptor and not the file object it is used to
     // create.  If we don't explicitly clean up the file (which in turn closes the
     // descriptor) the buffers allocated internally by fseek will be leaked.
-    int dupDescriptor = dup(descriptor);
+    int dupDescriptor = fcntl(descriptor, F_DUPFD_CLOEXEC, 0);
 
     FILE* file = fdopen(dupDescriptor, "r");
     if (file == NULL) {
diff --git a/core/jni/android/graphics/ImageDecoder.cpp b/core/jni/android/graphics/ImageDecoder.cpp
index df735ae..42f1a62 100644
--- a/core/jni/android/graphics/ImageDecoder.cpp
+++ b/core/jni/android/graphics/ImageDecoder.cpp
@@ -132,7 +132,7 @@
                                "broken file descriptor; fstat returned -1", nullptr, source);
     }
 
-    int dupDescriptor = dup(descriptor);
+    int dupDescriptor = fcntl(descriptor, F_DUPFD_CLOEXEC, 0);
     FILE* file = fdopen(dupDescriptor, "r");
     if (file == NULL) {
         close(dupDescriptor);
diff --git a/core/jni/android_content_res_ApkAssets.cpp b/core/jni/android_content_res_ApkAssets.cpp
index 7738d84..f40b461 100644
--- a/core/jni/android_content_res_ApkAssets.cpp
+++ b/core/jni/android_content_res_ApkAssets.cpp
@@ -72,7 +72,7 @@
     return 0;
   }
 
-  unique_fd dup_fd(::dup(fd));
+  unique_fd dup_fd(::fcntl(fd, F_DUPFD_CLOEXEC, 0));
   if (dup_fd < 0) {
     jniThrowIOException(env, errno);
     return 0;
diff --git a/core/jni/android_ddm_DdmHandleNativeHeap.cpp b/core/jni/android_ddm_DdmHandleNativeHeap.cpp
index 2f25d8f..e22f581 100644
--- a/core/jni/android_ddm_DdmHandleNativeHeap.cpp
+++ b/core/jni/android_ddm_DdmHandleNativeHeap.cpp
@@ -54,7 +54,7 @@
 namespace android {
 
 static void ReadFile(const char* path, String8& s) {
-    int fd = open(path, O_RDONLY);
+    int fd = open(path, O_RDONLY | O_CLOEXEC);
     if (fd != -1) {
         char bytes[1024];
         ssize_t byteCount;
diff --git a/core/jni/android_hardware_SerialPort.cpp b/core/jni/android_hardware_SerialPort.cpp
index 190ddce..3ff2446 100644
--- a/core/jni/android_hardware_SerialPort.cpp
+++ b/core/jni/android_hardware_SerialPort.cpp
@@ -134,7 +134,7 @@
 
     int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
     // duplicate the file descriptor, since ParcelFileDescriptor will eventually close its copy
-    fd = dup(fd);
+    fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
     if (fd < 0) {
         jniThrowException(env, "java/io/IOException", "Could not open serial port");
         return;
diff --git a/core/jni/android_hardware_UsbDeviceConnection.cpp b/core/jni/android_hardware_UsbDeviceConnection.cpp
index d953aee..b885c28 100644
--- a/core/jni/android_hardware_UsbDeviceConnection.cpp
+++ b/core/jni/android_hardware_UsbDeviceConnection.cpp
@@ -49,7 +49,7 @@
 {
     int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
     // duplicate the file descriptor, since ParcelFileDescriptor will eventually close its copy
-    fd = dup(fd);
+    fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
     if (fd < 0)
         return JNI_FALSE;
 
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 8df028a..8be617f 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -943,7 +943,7 @@
     }
 
     /* dup() the descriptor so we don't close the original with fclose() */
-    int fd = dup(origFd);
+    int fd = fcntl(origFd, F_DUPFD_CLOEXEC, 0);
     if (fd < 0) {
         ALOGW("dup(%d) failed: %s\n", origFd, strerror(errno));
         jniThrowRuntimeException(env, "dup() failed");
diff --git a/core/jni/android_text_Hyphenator.cpp b/core/jni/android_text_Hyphenator.cpp
index 6f9cc22..de30773 100644
--- a/core/jni/android_text_Hyphenator.cpp
+++ b/core/jni/android_text_Hyphenator.cpp
@@ -37,7 +37,7 @@
 
 static const uint8_t* mmapPatternFile(const std::string& locale) {
     const std::string hyFilePath = buildFileName(locale);
-    const int fd = open(hyFilePath.c_str(), O_RDONLY);
+    const int fd = open(hyFilePath.c_str(), O_RDONLY | O_CLOEXEC);
     if (fd == -1) {
         return nullptr;  // Open failed.
     }
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp
index adff4d6..9556333 100644
--- a/core/jni/android_util_Binder.cpp
+++ b/core/jni/android_util_Binder.cpp
@@ -1158,7 +1158,7 @@
     FILE *f;
 
     snprintf(filename, sizeof(filename), "/proc/%d/cmdline", pid);
-    f = fopen(filename, "r");
+    f = fopen(filename, "re");
     if (!f) {
         *buf = '\0';
         return 1;
diff --git a/core/jni/android_util_FileObserver.cpp b/core/jni/android_util_FileObserver.cpp
index 6f975b2..578788c 100644
--- a/core/jni/android_util_FileObserver.cpp
+++ b/core/jni/android_util_FileObserver.cpp
@@ -40,7 +40,7 @@
 static jint android_os_fileobserver_init(JNIEnv* env, jobject object)
 {
 #if defined(__linux__)
-    return (jint)inotify_init();
+    return (jint)inotify_init1(IN_CLOEXEC);
 #else
     return -1;
 #endif
diff --git a/core/jni/android_util_Process.cpp b/core/jni/android_util_Process.cpp
index 62aa1f38..9782541 100644
--- a/core/jni/android_util_Process.cpp
+++ b/core/jni/android_util_Process.cpp
@@ -22,10 +22,10 @@
 #include <utils/Log.h>
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
-#include <cutils/sched_policy.h>
 #include <utils/String8.h>
 #include <utils/Vector.h>
 #include <processgroup/processgroup.h>
+#include <processgroup/sched_policy.h>
 
 #include "core_jni_helpers.h"
 
diff --git a/core/jni/com_android_internal_content_NativeLibraryHelper.cpp b/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
index 5eefc81..dc536b2 100644
--- a/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
+++ b/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
@@ -125,7 +125,7 @@
         return true;
     }
 
-    int fd = TEMP_FAILURE_RETRY(open(filePath, O_RDONLY));
+    int fd = TEMP_FAILURE_RETRY(open(filePath, O_RDONLY | O_CLOEXEC));
     if (fd < 0) {
         ALOGV("Couldn't open file %s: %s", filePath, strerror(errno));
         return true;
@@ -565,7 +565,7 @@
         return 0;
     }
 
-    int dupedFd = dup(fd);
+    int dupedFd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
     if (dupedFd == -1) {
         jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                              "Failed to dup FileDescriptor: %s", strerror(errno));
diff --git a/core/jni/com_android_internal_net_NetworkStatsFactory.cpp b/core/jni/com_android_internal_net_NetworkStatsFactory.cpp
index 24bafca..8259ffc 100644
--- a/core/jni/com_android_internal_net_NetworkStatsFactory.cpp
+++ b/core/jni/com_android_internal_net_NetworkStatsFactory.cpp
@@ -95,7 +95,7 @@
 static int legacyReadNetworkStatsDetail(std::vector<stats_line>* lines,
                                         const std::vector<std::string>& limitIfaces,
                                         int limitTag, int limitUid, const char* path) {
-    FILE* fp = fopen(path, "r");
+    FILE* fp = fopen(path, "re");
     if (fp == NULL) {
         return -1;
     }
diff --git a/core/jni/com_android_internal_os_Zygote.cpp b/core/jni/com_android_internal_os_Zygote.cpp
index 43e6399..1448d7b 100644
--- a/core/jni/com_android_internal_os_Zygote.cpp
+++ b/core/jni/com_android_internal_os_Zygote.cpp
@@ -69,13 +69,13 @@
 #include <android-base/unique_fd.h>
 #include <cutils/fs.h>
 #include <cutils/multiuser.h>
-#include <cutils/sched_policy.h>
 #include <private/android_filesystem_config.h>
 #include <utils/String8.h>
 #include <selinux/android.h>
 #include <seccomp_policy.h>
 #include <stats_event_list.h>
 #include <processgroup/processgroup.h>
+#include <processgroup/sched_policy.h>
 
 #include "core_jni_helpers.h"
 #include <nativehelper/JNIHelp.h>
@@ -659,7 +659,7 @@
 
 // Utility to close down the Zygote socket file descriptors while
 // the child is still running as root with Zygote's privileges.  Each
-// descriptor (if any) is closed via dup2(), replacing it with a valid
+// descriptor (if any) is closed via dup3(), replacing it with a valid
 // (open) descriptor to /dev/null.
 
 static void DetachDescriptors(JNIEnv* env,
@@ -667,15 +667,15 @@
                               fail_fn_t fail_fn) {
 
   if (fds_to_close.size() > 0) {
-    android::base::unique_fd devnull_fd(open("/dev/null", O_RDWR));
+    android::base::unique_fd devnull_fd(open("/dev/null", O_RDWR | O_CLOEXEC));
     if (devnull_fd == -1) {
       fail_fn(std::string("Failed to open /dev/null: ").append(strerror(errno)));
     }
 
     for (int fd : fds_to_close) {
       ALOGV("Switching descriptor %d to /dev/null", fd);
-      if (dup2(devnull_fd, fd) == -1) {
-        fail_fn(StringPrintf("Failed dup2() on descriptor %d: %s", fd, strerror(errno)));
+      if (dup3(devnull_fd, fd, O_CLOEXEC) == -1) {
+        fail_fn(StringPrintf("Failed dup3() on descriptor %d: %s", fd, strerror(errno)));
       }
     }
   }
@@ -1252,7 +1252,7 @@
     fds_to_close.insert(fds_to_close.end(), blastula_pipes.begin(), blastula_pipes.end());
     fds_to_ignore.insert(fds_to_ignore.end(), blastula_pipes.begin(), blastula_pipes.end());
 
-//    fds_to_close.push_back(gBlastulaPoolSocketFD);
+    fds_to_close.push_back(gBlastulaPoolSocketFD);
 
     if (gBlastulaPoolEventFD != -1) {
       fds_to_close.push_back(gBlastulaPoolEventFD);
@@ -1277,7 +1277,7 @@
   std::vector<int> fds_to_close(MakeBlastulaPipeReadFDVector()),
                    fds_to_ignore(fds_to_close);
 
-//  fds_to_close.push_back(gBlastulaPoolSocketFD);
+  fds_to_close.push_back(gBlastulaPoolSocketFD);
 
   if (gBlastulaPoolEventFD != -1) {
     fds_to_close.push_back(gBlastulaPoolEventFD);
diff --git a/core/jni/fd_utils.cpp b/core/jni/fd_utils.cpp
index 0ed8c0c..8e6db0b 100644
--- a/core/jni/fd_utils.cpp
+++ b/core/jni/fd_utils.cpp
@@ -71,6 +71,7 @@
       return true;
   }
 
+  // Framework jars are allowed.
   static const char* kFrameworksPrefix = "/system/framework/";
   static const char* kJarSuffix = ".jar";
   if (android::base::StartsWith(path, kFrameworksPrefix)
@@ -78,6 +79,13 @@
     return true;
   }
 
+  // Jars from the runtime apex are allowed.
+  static const char* kRuntimeApexPrefix = "/apex/com.android.runtime/javalib/";
+  if (android::base::StartsWith(path, kRuntimeApexPrefix)
+      && android::base::EndsWith(path, kJarSuffix)) {
+    return true;
+  }
+
   // Whitelist files needed for Runtime Resource Overlay, like these:
   // /system/vendor/overlay/framework-res.apk
   // /system/vendor/overlay-subdir/pg/framework-res.apk
@@ -410,13 +418,13 @@
 }
 
 void FileDescriptorInfo::DetachSocket(fail_fn_t fail_fn) const {
-  const int dev_null_fd = open("/dev/null", O_RDWR);
+  const int dev_null_fd = open("/dev/null", O_RDWR | O_CLOEXEC);
   if (dev_null_fd < 0) {
     fail_fn(std::string("Failed to open /dev/null: ").append(strerror(errno)));
   }
 
-  if (dup2(dev_null_fd, fd) == -1) {
-    fail_fn(android::base::StringPrintf("Failed dup2 on socket descriptor %d: %s",
+  if (dup3(dev_null_fd, fd, O_CLOEXEC) == -1) {
+    fail_fn(android::base::StringPrintf("Failed dup3 on socket descriptor %d: %s",
                                         fd,
                                         strerror(errno)));
   }
diff --git a/core/proto/Android.bp b/core/proto/Android.bp
index 80cc2d4..3b891d6 100644
--- a/core/proto/Android.bp
+++ b/core/proto/Android.bp
@@ -21,7 +21,10 @@
         type: "lite",
     },
     srcs: [
+        "android/bluetooth/a2dp/enums.proto",
         "android/bluetooth/enums.proto",
         "android/bluetooth/hci/enums.proto",
+        "android/bluetooth/hfp/enums.proto",
+        "android/bluetooth/smp/enums.proto",
     ],
 }
diff --git a/core/proto/android/bluetooth/a2dp/enums.proto b/core/proto/android/bluetooth/a2dp/enums.proto
new file mode 100644
index 0000000..5a025bd
--- /dev/null
+++ b/core/proto/android/bluetooth/a2dp/enums.proto
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+package android.bluetooth.a2dp;
+
+option java_outer_classname = "BluetoothA2dpProtoEnums";
+option java_multiple_files = true;
+
+// A2dp playback state enum, defined from:
+// frameworks/base/core/java/android/bluetooth/BluetoothA2dp.java
+enum PlaybackStateEnum {
+    PLAYBACK_STATE_UNKNOWN = 0;
+    PLAYBACK_STATE_PLAYING = 10;
+    PLAYBACK_STATE_NOT_PLAYING = 11;
+}
+
+enum AudioCodingModeEnum {
+    AUDIO_CODING_MODE_UNKNOWN = 0;
+    AUDIO_CODING_MODE_HARDWARE = 1;
+    AUDIO_CODING_MODE_SOFTWARE = 2;
+}
diff --git a/core/proto/android/bluetooth/enums.proto b/core/proto/android/bluetooth/enums.proto
index 76c240e..a88a06c 100644
--- a/core/proto/android/bluetooth/enums.proto
+++ b/core/proto/android/bluetooth/enums.proto
@@ -56,3 +56,57 @@
     LINK_TYPE_ACL = 0x01;
     LINK_TYPE_ESCO = 0x02;
 }
+
+enum DeviceInfoSrcEnum {
+    DEVICE_INFO_SRC_UNKNOWN = 0;
+    // Within Android Bluetooth stack
+    DEVICE_INFO_INTERNAL = 1;
+    // Outside Android Bluetooth stack
+    DEVICE_INFO_EXTERNAL = 2;
+}
+
+enum DeviceTypeEnum {
+    DEVICE_TYPE_UNKNOWN = 0;
+    DEVICE_TYPE_CLASSIC = 1;
+    DEVICE_TYPE_LE = 2;
+    DEVICE_TYPE_DUAL = 3;
+}
+
+// Defined in frameworks/base/core/java/android/bluetooth/BluetoothDevice.java
+enum TransportTypeEnum {
+    TRANSPORT_TYPE_AUTO = 0;
+    TRANSPORT_TYPE_BREDR = 1;
+    TRANSPORT_TYPE_LE = 2;
+}
+
+// Bond state enum
+// Defined in frameworks/base/core/java/android/bluetooth/BluetoothDevice.java
+enum BondStateEnum {
+    BOND_STATE_UNKNOWN = 0;
+    BOND_STATE_NONE = 10;
+    BOND_STATE_BONDING = 11;
+    BOND_STATE_BONDED = 12;
+}
+
+// Sub states within the bonding general state
+enum BondSubStateEnum {
+    BOND_SUB_STATE_UNKNOWN = 0;
+    BOND_SUB_STATE_LOCAL_OOB_DATA_PROVIDED = 1;
+    BOND_SUB_STATE_LOCAL_PIN_REQUESTED = 2;
+    BOND_SUB_STATE_LOCAL_PIN_REPLIED = 3;
+    BOND_SUB_STATE_LOCAL_SSP_REQUESTED = 4;
+    BOND_SUB_STATE_LOCAL_SSP_REPLIED = 5;
+}
+
+enum UnbondReasonEnum {
+    UNBOND_REASON_UNKNOWN = 0;
+    UNBOND_REASON_AUTH_FAILED = 1;
+    UNBOND_REASON_AUTH_REJECTED = 2;
+    UNBOND_REASON_AUTH_CANCELED = 3;
+    UNBOND_REASON_REMOTE_DEVICE_DOWN = 4;
+    UNBOND_REASON_DISCOVERY_IN_PROGRESS = 5;
+    UNBOND_REASON_AUTH_TIMEOUT = 6;
+    UNBOND_REASON_REPEATED_ATTEMPTS = 7;
+    UNBOND_REASON_REMOTE_AUTH_CANCELED = 8;
+    UNBOND_REASON_REMOVED = 9;
+}
diff --git a/core/proto/android/bluetooth/hci/enums.proto b/core/proto/android/bluetooth/hci/enums.proto
index e1d96bb..ef894e5 100644
--- a/core/proto/android/bluetooth/hci/enums.proto
+++ b/core/proto/android/bluetooth/hci/enums.proto
@@ -351,7 +351,7 @@
     EVT_COMMAND_COMPLETE = 0x0E;
     EVT_COMMAND_STATUS = 0x0F;
     EVT_HARDWARE_ERROR = 0x10;
-    EVT_FLUSH_OCCURED = 0x11;
+    EVT_FLUSH_OCCURRED = 0x11;
     EVT_ROLE_CHANGE = 0x12;
     EVT_NUM_COMPL_DATA_PKTS = 0x13;
     EVT_MODE_CHANGE = 0x14;
@@ -517,3 +517,43 @@
     STATUS_CLB_DATA_TOO_BIG = 0x43;
     STATUS_OPERATION_CANCELED_BY_HOST = 0x44; // Not currently used in system/bt
 }
+
+enum BqrIdEnum {
+    BQR_ID_UNKNOWN = 0x00;
+    BQR_ID_MONITOR_MODE = 0x01;
+    BQR_ID_APPROACH_LSTO = 0x02;
+    BQR_ID_A2DP_AUDIO_CHOPPY = 0x03;
+    BQR_ID_SCO_VOICE_CHOPPY = 0x04;
+}
+
+enum BqrPacketTypeEnum {
+    BQR_PACKET_TYPE_UNKNOWN = 0x00;
+    BQR_PACKET_TYPE_ID = 0x01;
+    BQR_PACKET_TYPE_NULL = 0x02;
+    BQR_PACKET_TYPE_POLL = 0x03;
+    BQR_PACKET_TYPE_FHS = 0x04;
+    BQR_PACKET_TYPE_HV1 = 0x05;
+    BQR_PACKET_TYPE_HV2 = 0x06;
+    BQR_PACKET_TYPE_HV3 = 0x07;
+    BQR_PACKET_TYPE_DV = 0x08;
+    BQR_PACKET_TYPE_EV3 = 0x09;
+    BQR_PACKET_TYPE_EV4 = 0x0A;
+    BQR_PACKET_TYPE_EV5 = 0x0B;
+    BQR_PACKET_TYPE_2EV3 = 0x0C;
+    BQR_PACKET_TYPE_2EV5 = 0x0D;
+    BQR_PACKET_TYPE_3EV3 = 0x0E;
+    BQR_PACKET_TYPE_3EV5 = 0x0F;
+    BQR_PACKET_TYPE_DM1 = 0x10;
+    BQR_PACKET_TYPE_DH1 = 0x11;
+    BQR_PACKET_TYPE_DM3 = 0x12;
+    BQR_PACKET_TYPE_DH3 = 0x13;
+    BQR_PACKET_TYPE_DM5 = 0x14;
+    BQR_PACKET_TYPE_DH5 = 0x15;
+    BQR_PACKET_TYPE_AUX1 = 0x16;
+    BQR_PACKET_TYPE_2DH1 = 0x17;
+    BQR_PACKET_TYPE_2DH3 = 0x18;
+    BQR_PACKET_TYPE_2DH5 = 0x19;
+    BQR_PACKET_TYPE_3DH1 = 0x1A;
+    BQR_PACKET_TYPE_3DH3 = 0x1B;
+    BQR_PACKET_TYPE_3DH5 = 0x1C;
+}
diff --git a/core/proto/android/bluetooth/smp/enums.proto b/core/proto/android/bluetooth/smp/enums.proto
new file mode 100644
index 0000000..c6747b7
--- /dev/null
+++ b/core/proto/android/bluetooth/smp/enums.proto
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+package android.bluetooth.smp;
+
+option java_outer_classname = "BluetoothSmpProtoEnums";
+option java_multiple_files = true;
+
+// SMP Pairing command codes
+enum CommandEnum {
+    CMD_UNKNOWN = 0x00;
+    CMD_PAIRING_REQUEST = 0x01;
+    CMD_PAIRING_RESPONSE = 0x02;
+    CMD_PAIRING_CONFIRM = 0x03;
+    CMD_PAIRING_RANDOM = 0x04;
+    CMD_PAIRING_FAILED = 0x05;
+    CMD_ENCRYPTION_INFON = 0x06;
+    CMD_MASTER_IDENTIFICATION = 0x07;
+    CMD_IDENTITY_INFO = 0x08;
+    CMD_IDENTITY_ADDR_INFO = 0x09;
+    CMD_SIGNING_INFO = 0x0A;
+    CMD_SECURITY_REQUEST = 0x0B;
+    CMD_PAIRING_PUBLIC_KEY = 0x0C;
+    CMD_PAIRING_DHKEY_CHECK = 0x0D;
+    CMD_PAIRING_KEYPRESS_INFO = 0x0E;
+}
+
+enum PairingFailReasonEnum {
+    PAIRING_FAIL_REASON_RESERVED = 0x00;
+    PAIRING_FAIL_REASON_PASSKEY_ENTRY = 0x01;
+    PAIRING_FAIL_REASON_OOB = 0x02;
+    PAIRING_FAIL_REASON_AUTH_REQ = 0x03;
+    PAIRING_FAIL_REASON_CONFIRM_VALUE = 0x04;
+    PAIRING_FAIL_REASON_PAIR_NOT_SUPPORT = 0x05;
+    PAIRING_FAIL_REASON_ENC_KEY_SIZE = 0x06;
+    PAIRING_FAIL_REASON_INVALID_CMD = 0x07;
+    PAIRING_FAIL_REASON_UNSPECIFIED = 0x08;
+    PAIRING_FAIL_REASON_REPEATED_ATTEMPTS = 0x09;
+    PAIRING_FAIL_REASON_INVALID_PARAMETERS = 0x0A;
+    PAIRING_FAIL_REASON_DHKEY_CHK = 0x0B;
+    PAIRING_FAIL_REASON_NUMERIC_COMPARISON = 0x0C;
+    PAIRING_FAIL_REASON_CLASSIC_PAIRING_IN_PROGR = 0x0D;
+    PAIRING_FAIL_REASON_XTRANS_DERIVE_NOT_ALLOW = 0x0E;
+}
\ No newline at end of file
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 344b74c..2f3c1db 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -3231,6 +3231,12 @@
         android:protectionLevel="signature|privileged" />
     <uses-permission android:name="android.permission.CONTROL_VPN" />
 
+    <!-- Allows an application to access and modify always-on VPN configuration.
+         <p>Not for use by third-party or privileged applications.
+         @hide -->
+    <permission android:name="android.permission.CONTROL_ALWAYS_ON_VPN"
+        android:protectionLevel="signature" />
+
     <!-- Allows an application to capture audio output.
          <p>Not for use by third-party applications.</p> -->
     <permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT"
diff --git a/core/tests/coretests/Android.mk b/core/tests/coretests/Android.mk
index 041fb7e..3a9d9a3 100644
--- a/core/tests/coretests/Android.mk
+++ b/core/tests/coretests/Android.mk
@@ -51,7 +51,6 @@
     org.apache.http.legacy \
     android.test.base \
     android.test.mock \
-    framework-oahl-backward-compatibility \
     framework-atb-backward-compatibility \
 
 LOCAL_PACKAGE_NAME := FrameworksCoreTests
diff --git a/core/tests/coretests/src/android/app/servertransaction/TransactionParcelTests.java b/core/tests/coretests/src/android/app/servertransaction/TransactionParcelTests.java
index 0906435..104208e 100644
--- a/core/tests/coretests/src/android/app/servertransaction/TransactionParcelTests.java
+++ b/core/tests/coretests/src/android/app/servertransaction/TransactionParcelTests.java
@@ -38,7 +38,6 @@
 import android.content.pm.ServiceInfo;
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
-import android.net.Uri;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Debug;
@@ -499,7 +498,7 @@
         }
 
         @Override
-        public void setHttpProxy(String s, String s1, String s2, Uri uri) throws RemoteException {
+        public void updateHttpProxy() throws RemoteException {
         }
 
         @Override
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index ddab252..212c723 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -512,6 +512,7 @@
                  Settings.Secure.ALLOWED_GEOLOCATION_ORIGINS,
                  Settings.Secure.ALWAYS_ON_VPN_APP,
                  Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN,
+                 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST,
                  Settings.Secure.ANDROID_ID,
                  Settings.Secure.ANR_SHOW_BACKGROUND,
                  Settings.Secure.ASSISTANT,
diff --git a/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java b/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
index 7e20f2d..d03e5e3 100644
--- a/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
+++ b/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
@@ -17,7 +17,6 @@
 package com.android.captiveportallogin;
 
 import static android.net.ConnectivityManager.EXTRA_CAPTIVE_PORTAL_PROBE_SPEC;
-import static android.net.captiveportal.CaptivePortalProbeSpec.HTTP_LOCATION_HEADER_NAME;
 
 import android.app.Activity;
 import android.app.AlertDialog;
@@ -40,7 +39,6 @@
 import android.net.wifi.WifiInfo;
 import android.os.Build;
 import android.os.Bundle;
-import android.provider.Settings;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.text.TextUtils;
 import android.util.ArrayMap;
@@ -65,12 +63,11 @@
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 
 import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;
-import java.lang.InterruptedException;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
 import java.util.Objects;
 import java.util.Random;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -81,6 +78,7 @@
     private static final boolean VDBG = false;
 
     private static final int SOCKET_TIMEOUT_MS = 10000;
+    public static final String HTTP_LOCATION_HEADER_NAME = "Location";
 
     private enum Result {
         DISMISSED(MetricsEvent.ACTION_CAPTIVE_PORTAL_LOGIN_RESULT_DISMISSED),
diff --git a/packages/NetworkStack/Android.bp b/packages/NetworkStack/Android.bp
index a2da0a0..b0522f2 100644
--- a/packages/NetworkStack/Android.bp
+++ b/packages/NetworkStack/Android.bp
@@ -18,20 +18,23 @@
 // system server on devices that run the stack there
 java_library {
     name: "NetworkStackLib",
+    sdk_version: "system_current",
     installable: true,
     srcs: [
         "src/**/*.java",
+        ":framework-networkstack-shared-srcs",
         ":services-networkstack-shared-srcs",
     ],
     static_libs: [
-        "services-netlink-lib",
+        "netd_aidl_interface-java",
+        "networkstack-aidl-interfaces-java",
     ]
 }
 
 // Updatable network stack packaged as an application
 android_app {
     name: "NetworkStack",
-    platform_apis: true,
+    sdk_version: "system_current",
     certificate: "platform",
     privileged: true,
     static_libs: [
diff --git a/packages/NetworkStack/TEST_MAPPING b/packages/NetworkStack/TEST_MAPPING
new file mode 100644
index 0000000..55ba591
--- /dev/null
+++ b/packages/NetworkStack/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "postsubmit": [
+    {
+      "name": "NetworkStackTests"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/packages/NetworkStack/src/android/net/apf/ApfFilter.java b/packages/NetworkStack/src/android/net/apf/ApfFilter.java
index 50c4dfc..4fa7d64 100644
--- a/packages/NetworkStack/src/android/net/apf/ApfFilter.java
+++ b/packages/NetworkStack/src/android/net/apf/ApfFilter.java
@@ -26,11 +26,6 @@
 import static android.system.OsConstants.IPPROTO_UDP;
 import static android.system.OsConstants.SOCK_RAW;
 
-import static com.android.internal.util.BitUtils.bytesToBEInt;
-import static com.android.internal.util.BitUtils.getUint16;
-import static com.android.internal.util.BitUtils.getUint32;
-import static com.android.internal.util.BitUtils.getUint8;
-import static com.android.internal.util.BitUtils.uint32;
 import static com.android.server.util.NetworkStackConstants.ICMPV6_ECHO_REQUEST_TYPE;
 import static com.android.server.util.NetworkStackConstants.ICMPV6_NEIGHBOR_ADVERTISEMENT;
 import static com.android.server.util.NetworkStackConstants.ICMPV6_ROUTER_ADVERTISEMENT;
@@ -43,7 +38,6 @@
 import android.content.IntentFilter;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
-import android.net.NetworkUtils;
 import android.net.apf.ApfGenerator.IllegalInstructionException;
 import android.net.apf.ApfGenerator.Register;
 import android.net.ip.IpClient.IpClientCallbacksWrapper;
@@ -52,6 +46,8 @@
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.RaEvent;
 import android.net.util.InterfaceParams;
+import android.net.util.NetworkStackUtils;
+import android.net.util.SocketUtils;
 import android.os.PowerManager;
 import android.os.SystemClock;
 import android.system.ErrnoException;
@@ -65,8 +61,6 @@
 import com.android.internal.util.HexDump;
 import com.android.internal.util.IndentingPrintWriter;
 
-import libcore.io.IoBridge;
-
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.net.Inet4Address;
@@ -205,10 +199,8 @@
 
         public void halt() {
             mStopped = true;
-            try {
-                // Interrupts the read() call the thread is blocked in.
-                IoBridge.closeAndSignalBlockedThreads(mSocket);
-            } catch (IOException ignored) {}
+            // Interrupts the read() call the thread is blocked in.
+            NetworkStackUtils.closeSocketQuietly(mSocket);
         }
 
         @Override
@@ -475,8 +467,8 @@
             socket = Os.socket(AF_PACKET, SOCK_RAW, ETH_P_IPV6);
             SocketAddress addr = makePacketSocketAddress(
                     (short) ETH_P_IPV6, mInterfaceParams.index);
-            Os.bind(socket, addr);
-            NetworkUtils.attachRaFilter(socket, mApfCapabilities.apfPacketFormat);
+            SocketUtils.bindSocket(socket, addr);
+            SocketUtils.attachRaFilter(socket, mApfCapabilities.apfPacketFormat);
         } catch(SocketException|ErrnoException e) {
             Log.e(TAG, "Error starting filter", e);
             return;
@@ -1586,6 +1578,29 @@
     // TODO: move to android.net.NetworkUtils
     @VisibleForTesting
     public static int ipv4BroadcastAddress(byte[] addrBytes, int prefixLength) {
-        return bytesToBEInt(addrBytes) | (int) (uint32(-1) >>> prefixLength);
+        return bytesToBEInt(addrBytes) | (int) (Integer.toUnsignedLong(-1) >>> prefixLength);
+    }
+
+    private static int uint8(byte b) {
+        return b & 0xff;
+    }
+
+    private static int getUint16(ByteBuffer buffer, int position) {
+        return buffer.getShort(position) & 0xffff;
+    }
+
+    private static long getUint32(ByteBuffer buffer, int position) {
+        return Integer.toUnsignedLong(buffer.getInt(position));
+    }
+
+    private static int getUint8(ByteBuffer buffer, int position) {
+        return uint8(buffer.get(position));
+    }
+
+    private static int bytesToBEInt(byte[] bytes) {
+        return (uint8(bytes[0]) << 24)
+                + (uint8(bytes[1]) << 16)
+                + (uint8(bytes[2]) << 8)
+                + (uint8(bytes[3]));
     }
 }
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpClient.java b/packages/NetworkStack/src/android/net/dhcp/DhcpClient.java
index 04ac9a3..b0e8da9 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpClient.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpClient.java
@@ -28,6 +28,7 @@
 import static android.net.dhcp.DhcpPacket.DHCP_VENDOR_INFO;
 import static android.net.dhcp.DhcpPacket.INADDR_ANY;
 import static android.net.dhcp.DhcpPacket.INADDR_BROADCAST;
+import static android.net.util.NetworkStackUtils.closeSocketQuietly;
 import static android.net.util.SocketUtils.makePacketSocketAddress;
 import static android.system.OsConstants.AF_INET;
 import static android.system.OsConstants.AF_PACKET;
@@ -40,9 +41,10 @@
 import static android.system.OsConstants.SO_RCVBUF;
 import static android.system.OsConstants.SO_REUSEADDR;
 
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ANY;
+
 import android.content.Context;
 import android.net.DhcpResults;
-import android.net.NetworkUtils;
 import android.net.TrafficStats;
 import android.net.ip.IpClient;
 import android.net.metrics.DhcpClientEvent;
@@ -64,8 +66,6 @@
 import com.android.internal.util.StateMachine;
 import com.android.internal.util.WakeupMessage;
 
-import libcore.io.IoBridge;
-
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.net.Inet4Address;
@@ -106,6 +106,12 @@
     private static final boolean MSG_DBG = false;
     private static final boolean PACKET_DBG = false;
 
+    // Metrics events: must be kept in sync with server-side aggregation code.
+    /** Represents transitions from DhcpInitState to DhcpBoundState */
+    private static final String EVENT_INITIAL_BOUND = "InitialBoundState";
+    /** Represents transitions from and to DhcpBoundState via DhcpRenewingState */
+    private static final String EVENT_RENEWING_BOUND = "RenewingBoundState";
+
     // Timers and timeouts.
     private static final int SECONDS = 1000;
     private static final int FIRST_TIMEOUT_MS   =   2 * SECONDS;
@@ -311,8 +317,8 @@
         try {
             mPacketSock = Os.socket(AF_PACKET, SOCK_RAW, ETH_P_IP);
             SocketAddress addr = makePacketSocketAddress((short) ETH_P_IP, mIface.index);
-            Os.bind(mPacketSock, addr);
-            NetworkUtils.attachDhcpFilter(mPacketSock);
+            SocketUtils.bindSocket(mPacketSock, addr);
+            SocketUtils.attachDhcpFilter(mPacketSock);
         } catch(SocketException|ErrnoException e) {
             Log.e(TAG, "Error creating packet socket", e);
             return false;
@@ -328,7 +334,7 @@
             Os.setsockoptInt(mUdpSock, SOL_SOCKET, SO_REUSEADDR, 1);
             Os.setsockoptInt(mUdpSock, SOL_SOCKET, SO_BROADCAST, 1);
             Os.setsockoptInt(mUdpSock, SOL_SOCKET, SO_RCVBUF, 0);
-            Os.bind(mUdpSock, Inet4Address.ANY, DhcpPacket.DHCP_CLIENT);
+            Os.bind(mUdpSock, IPV4_ADDR_ANY, DhcpPacket.DHCP_CLIENT);
         } catch(SocketException|ErrnoException e) {
             Log.e(TAG, "Error creating UDP socket", e);
             return false;
@@ -348,15 +354,9 @@
         }
     }
 
-    private static void closeQuietly(FileDescriptor fd) {
-        try {
-            IoBridge.closeAndSignalBlockedThreads(fd);
-        } catch (IOException ignored) {}
-    }
-
     private void closeSockets() {
-        closeQuietly(mUdpSock);
-        closeQuietly(mPacketSock);
+        closeSocketQuietly(mUdpSock);
+        closeSocketQuietly(mPacketSock);
     }
 
     class ReceiveThread extends Thread {
@@ -412,7 +412,8 @@
         try {
             if (encap == DhcpPacket.ENCAP_L2) {
                 if (DBG) Log.d(TAG, "Broadcasting " + description);
-                Os.sendto(mPacketSock, buf.array(), 0, buf.limit(), 0, mInterfaceBroadcastAddr);
+                SocketUtils.sendTo(
+                        mPacketSock, buf.array(), 0, buf.limit(), 0, mInterfaceBroadcastAddr);
             } else if (encap == DhcpPacket.ENCAP_BOOTP && to.equals(INADDR_BROADCAST)) {
                 if (DBG) Log.d(TAG, "Broadcasting " + description);
                 // We only send L3-encapped broadcasts in DhcpRebindingState,
@@ -926,9 +927,9 @@
         private void logTimeToBoundState() {
             long now = SystemClock.elapsedRealtime();
             if (mLastBoundExitTime > mLastInitEnterTime) {
-                logState(DhcpClientEvent.RENEWING_BOUND, (int)(now - mLastBoundExitTime));
+                logState(EVENT_RENEWING_BOUND, (int) (now - mLastBoundExitTime));
             } else {
-                logState(DhcpClientEvent.INITIAL_BOUND, (int)(now - mLastInitEnterTime));
+                logState(EVENT_INITIAL_BOUND, (int) (now - mLastInitEnterTime));
             }
         }
     }
@@ -1019,7 +1020,7 @@
 
             // We need to broadcast and possibly reconnect the socket to a
             // completely different server.
-            closeQuietly(mUdpSock);
+            closeSocketQuietly(mUdpSock);
             if (!initUdpSocket()) {
                 Log.e(TAG, "Failed to recreate UDP socket");
                 transitionTo(mDhcpInitState);
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java b/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
index 0d298de..0a15cd7 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
@@ -16,12 +16,13 @@
 
 package android.net.dhcp;
 
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTH;
 import static android.net.dhcp.DhcpLease.EXPIRATION_NEVER;
 import static android.net.dhcp.DhcpLease.inet4AddrToString;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH;
 
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ANY;
 import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_BITS;
 
 import static java.lang.Math.min;
@@ -201,7 +202,7 @@
 
     private static boolean isIpAddrOutsidePrefix(@NonNull IpPrefix prefix,
             @Nullable Inet4Address addr) {
-        return addr != null && !addr.equals(Inet4Address.ANY) && !prefix.contains(addr);
+        return addr != null && !addr.equals(IPV4_ADDR_ANY) && !prefix.contains(addr);
     }
 
     @Nullable
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java b/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
index ce8b7e7..d7ff98b1 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
@@ -1,10 +1,13 @@
 package android.net.dhcp;
 
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ALL;
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ANY;
+
 import android.annotation.Nullable;
 import android.net.DhcpResults;
 import android.net.LinkAddress;
-import android.net.NetworkUtils;
 import android.net.metrics.DhcpErrorEvent;
+import android.net.shared.Inet4AddressUtils;
 import android.os.Build;
 import android.os.SystemProperties;
 import android.system.OsConstants;
@@ -43,8 +46,8 @@
     public static final int MINIMUM_LEASE = 60;
     public static final int INFINITE_LEASE = (int) 0xffffffff;
 
-    public static final Inet4Address INADDR_ANY = (Inet4Address) Inet4Address.ANY;
-    public static final Inet4Address INADDR_BROADCAST = (Inet4Address) Inet4Address.ALL;
+    public static final Inet4Address INADDR_ANY = IPV4_ADDR_ANY;
+    public static final Inet4Address INADDR_BROADCAST = IPV4_ADDR_ALL;
     public static final byte[] ETHER_BROADCAST = new byte[] {
             (byte) 0xff, (byte) 0xff, (byte) 0xff,
             (byte) 0xff, (byte) 0xff, (byte) 0xff,
@@ -1212,9 +1215,9 @@
      */
     public DhcpResults toDhcpResults() {
         Inet4Address ipAddress = mYourIp;
-        if (ipAddress.equals(Inet4Address.ANY)) {
+        if (ipAddress.equals(IPV4_ADDR_ANY)) {
             ipAddress = mClientIp;
-            if (ipAddress.equals(Inet4Address.ANY)) {
+            if (ipAddress.equals(IPV4_ADDR_ANY)) {
                 return null;
             }
         }
@@ -1222,13 +1225,13 @@
         int prefixLength;
         if (mSubnetMask != null) {
             try {
-                prefixLength = NetworkUtils.netmaskToPrefixLength(mSubnetMask);
+                prefixLength = Inet4AddressUtils.netmaskToPrefixLength(mSubnetMask);
             } catch (IllegalArgumentException e) {
                 // Non-contiguous netmask.
                 return null;
             }
         } else {
-            prefixLength = NetworkUtils.getImplicitNetmask(ipAddress);
+            prefixLength = Inet4AddressUtils.getImplicitNetmask(ipAddress);
         }
 
         DhcpResults results = new DhcpResults();
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpPacketListener.java b/packages/NetworkStack/src/android/net/dhcp/DhcpPacketListener.java
index dce8b61..96d1a28 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpPacketListener.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpPacketListener.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.net.util.FdEventsReader;
+import android.net.shared.FdEventsReader;
 import android.os.Handler;
 import android.system.Os;
 
@@ -64,7 +64,7 @@
     @Override
     protected int readPacket(@NonNull FileDescriptor fd, @NonNull Payload packetBuffer)
             throws Exception {
-        final InetSocketAddress addr = new InetSocketAddress();
+        final InetSocketAddress addr = new InetSocketAddress(0);
         final int read = Os.recvfrom(
                 fd, packetBuffer.mBytes, 0, packetBuffer.mBytes.length, 0 /* flags */, addr);
 
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java b/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
index 7b112df..cd993e9 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
@@ -16,8 +16,6 @@
 
 package android.net.dhcp;
 
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
 import static android.net.TrafficStats.TAG_SYSTEM_DHCP_SERVER;
 import static android.net.dhcp.DhcpPacket.DHCP_CLIENT;
 import static android.net.dhcp.DhcpPacket.DHCP_HOST_NAME;
@@ -25,14 +23,19 @@
 import static android.net.dhcp.DhcpPacket.ENCAP_BOOTP;
 import static android.net.dhcp.IDhcpServer.STATUS_INVALID_ARGUMENT;
 import static android.net.dhcp.IDhcpServer.STATUS_SUCCESS;
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
 import static android.system.OsConstants.AF_INET;
 import static android.system.OsConstants.IPPROTO_UDP;
 import static android.system.OsConstants.SOCK_DGRAM;
+import static android.system.OsConstants.SOCK_NONBLOCK;
 import static android.system.OsConstants.SOL_SOCKET;
 import static android.system.OsConstants.SO_BROADCAST;
 import static android.system.OsConstants.SO_REUSEADDR;
 
 import static com.android.server.util.NetworkStackConstants.INFINITE_LEASE;
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ALL;
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ANY;
 import static com.android.server.util.PermissionUtil.checkNetworkStackCallingPermission;
 
 import static java.lang.Integer.toUnsignedLong;
@@ -41,7 +44,6 @@
 import android.annotation.Nullable;
 import android.net.INetworkStackStatusCallback;
 import android.net.MacAddress;
-import android.net.NetworkUtils;
 import android.net.TrafficStats;
 import android.net.util.SharedLog;
 import android.net.util.SocketUtils;
@@ -205,7 +207,7 @@
         @Override
         public void addArpEntry(@NonNull Inet4Address ipv4Addr, @NonNull MacAddress ethAddr,
                 @NonNull String ifname, @NonNull FileDescriptor fd) throws IOException {
-            NetworkUtils.addArpEntry(ipv4Addr, ethAddr, ifname, fd);
+            SocketUtils.addArpEntry(ipv4Addr, ethAddr, ifname, fd);
         }
 
         @Override
@@ -434,7 +436,7 @@
         if (!isEmpty(request.mRelayIp)) {
             return request.mRelayIp;
         } else if (broadcastFlag) {
-            return (Inet4Address) Inet4Address.ALL;
+            return IPV4_ADDR_ALL;
         } else if (!isEmpty(request.mClientIp)) {
             return request.mClientIp;
         } else {
@@ -517,7 +519,7 @@
                 request.mRelayIp, request.mClientMac, true /* broadcast */, message);
 
         final Inet4Address dst = isEmpty(request.mRelayIp)
-                ? (Inet4Address) Inet4Address.ALL
+                ? IPV4_ADDR_ALL
                 : request.mRelayIp;
         return transmitPacket(nakPacket, DhcpNakPacket.class.getSimpleName(), dst);
     }
@@ -598,7 +600,7 @@
     }
 
     private static boolean isEmpty(@Nullable Inet4Address address) {
-        return address == null || Inet4Address.ANY.equals(address);
+        return address == null || IPV4_ADDR_ANY.equals(address);
     }
 
     private class PacketListener extends DhcpPacketListener {
@@ -628,11 +630,11 @@
             // TODO: have and use an API to set a socket tag without going through the thread tag
             final int oldTag = TrafficStats.getAndSetThreadStatsTag(TAG_SYSTEM_DHCP_SERVER);
             try {
-                mSocket = Os.socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+                mSocket = Os.socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, IPPROTO_UDP);
                 SocketUtils.bindSocketToInterface(mSocket, mIfName);
                 Os.setsockoptInt(mSocket, SOL_SOCKET, SO_REUSEADDR, 1);
                 Os.setsockoptInt(mSocket, SOL_SOCKET, SO_BROADCAST, 1);
-                Os.bind(mSocket, Inet4Address.ANY, DHCP_SERVER);
+                Os.bind(mSocket, IPV4_ADDR_ANY, DHCP_SERVER);
 
                 return mSocket;
             } catch (IOException | ErrnoException e) {
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java b/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
index 868f3be..3cd2aa4 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
@@ -16,8 +16,8 @@
 
 package android.net.dhcp;
 
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
 
 import static com.android.server.util.NetworkStackConstants.INFINITE_LEASE;
 import static com.android.server.util.NetworkStackConstants.IPV4_MAX_MTU;
@@ -29,7 +29,7 @@
 import android.annotation.Nullable;
 import android.net.IpPrefix;
 import android.net.LinkAddress;
-import android.net.NetworkUtils;
+import android.net.shared.Inet4AddressUtils;
 import android.util.ArraySet;
 
 import java.net.Inet4Address;
@@ -164,7 +164,8 @@
      */
     @NonNull
     public Inet4Address getBroadcastAddress() {
-        return NetworkUtils.getBroadcastAddress(getServerInet4Addr(), serverAddr.getPrefixLength());
+        return Inet4AddressUtils.getBroadcastAddress(
+                getServerInet4Addr(), serverAddr.getPrefixLength());
     }
 
     /**
@@ -208,7 +209,7 @@
          * but it must always be set explicitly before building the {@link DhcpServingParams}.
          */
         public Builder setDefaultRouters(@NonNull Inet4Address... defaultRouters) {
-            return setDefaultRouters(new ArraySet<>(Arrays.asList(defaultRouters)));
+            return setDefaultRouters(makeArraySet(defaultRouters));
         }
 
         /**
@@ -238,7 +239,7 @@
          * building the {@link DhcpServingParams}.
          */
         public Builder setDnsServers(@NonNull Inet4Address... dnsServers) {
-            return setDnsServers(new ArraySet<>(Arrays.asList(dnsServers)));
+            return setDnsServers(makeArraySet(dnsServers));
         }
 
         /**
@@ -268,7 +269,7 @@
          * and do not need to be set here.
          */
         public Builder setExcludedAddrs(@NonNull Inet4Address... excludedAddrs) {
-            return setExcludedAddrs(new ArraySet<>(Arrays.asList(excludedAddrs)));
+            return setExcludedAddrs(makeArraySet(excludedAddrs));
         }
 
         /**
@@ -367,4 +368,10 @@
     static IpPrefix makeIpPrefix(@NonNull LinkAddress addr) {
         return new IpPrefix(addr.getAddress(), addr.getPrefixLength());
     }
+
+    private static <T> ArraySet<T> makeArraySet(T[] elements) {
+        final ArraySet<T> set = new ArraySet<>(elements.length);
+        set.addAll(Arrays.asList(elements));
+        return set;
+    }
 }
diff --git a/packages/NetworkStack/src/android/net/ip/ConnectivityPacketTracker.java b/packages/NetworkStack/src/android/net/ip/ConnectivityPacketTracker.java
index 385dd52..649257a 100644
--- a/packages/NetworkStack/src/android/net/ip/ConnectivityPacketTracker.java
+++ b/packages/NetworkStack/src/android/net/ip/ConnectivityPacketTracker.java
@@ -20,12 +20,13 @@
 import static android.system.OsConstants.AF_PACKET;
 import static android.system.OsConstants.ARPHRD_ETHER;
 import static android.system.OsConstants.ETH_P_ALL;
+import static android.system.OsConstants.SOCK_NONBLOCK;
 import static android.system.OsConstants.SOCK_RAW;
 
-import android.net.NetworkUtils;
 import android.net.util.ConnectivityPacketSummary;
 import android.net.util.InterfaceParams;
 import android.net.util.PacketReader;
+import android.net.util.SocketUtils;
 import android.os.Handler;
 import android.system.ErrnoException;
 import android.system.Os;
@@ -33,7 +34,7 @@
 import android.util.LocalLog;
 import android.util.Log;
 
-import libcore.util.HexEncoding;
+import com.android.internal.util.HexDump;
 
 import java.io.FileDescriptor;
 import java.io.IOException;
@@ -101,9 +102,10 @@
         protected FileDescriptor createFd() {
             FileDescriptor s = null;
             try {
-                s = Os.socket(AF_PACKET, SOCK_RAW, 0);
-                NetworkUtils.attachControlPacketFilter(s, ARPHRD_ETHER);
-                Os.bind(s, makePacketSocketAddress((short) ETH_P_ALL, mInterface.index));
+                s = Os.socket(AF_PACKET, SOCK_RAW | SOCK_NONBLOCK, 0);
+                SocketUtils.attachControlPacketFilter(s, ARPHRD_ETHER);
+                SocketUtils.bindSocket(
+                        s, makePacketSocketAddress((short) ETH_P_ALL, mInterface.index));
             } catch (ErrnoException | IOException e) {
                 logError("Failed to create packet tracking socket: ", e);
                 closeFd(s);
@@ -119,8 +121,7 @@
             if (summary == null) return;
 
             if (DBG) Log.d(mTag, summary);
-            addLogEntry(summary +
-                        "\n[" + new String(HexEncoding.encode(recvbuf, 0, length)) + "]");
+            addLogEntry(summary + "\n[" + HexDump.toHexString(recvbuf, 0, length) + "]");
         }
 
         @Override
diff --git a/packages/NetworkStack/src/android/net/ip/IpClient.java b/packages/NetworkStack/src/android/net/ip/IpClient.java
index ad7f85d..12fe8c5 100644
--- a/packages/NetworkStack/src/android/net/ip/IpClient.java
+++ b/packages/NetworkStack/src/android/net/ip/IpClient.java
@@ -16,6 +16,7 @@
 
 package android.net.ip;
 
+import static android.net.RouteInfo.RTN_UNICAST;
 import static android.net.shared.IpConfigurationParcelableUtil.toStableParcelable;
 import static android.net.shared.LinkPropertiesParcelableUtil.fromStableParcelable;
 import static android.net.shared.LinkPropertiesParcelableUtil.toStableParcelable;
@@ -29,7 +30,6 @@
 import android.net.IpPrefix;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
-import android.net.Network;
 import android.net.ProvisioningConfigurationParcelable;
 import android.net.ProxyInfo;
 import android.net.ProxyInfoParcelable;
@@ -37,26 +37,21 @@
 import android.net.apf.ApfCapabilities;
 import android.net.apf.ApfFilter;
 import android.net.dhcp.DhcpClient;
-import android.net.ip.IIpClientCallbacks;
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.IpManagerEvent;
 import android.net.shared.InitialConfiguration;
-import android.net.shared.NetdService;
 import android.net.shared.ProvisioningConfiguration;
 import android.net.util.InterfaceParams;
 import android.net.util.SharedLog;
 import android.os.ConditionVariable;
-import android.os.INetworkManagementService;
 import android.os.Message;
 import android.os.RemoteException;
-import android.os.ServiceManager;
 import android.os.SystemClock;
 import android.text.TextUtils;
 import android.util.LocalLog;
 import android.util.Log;
 import android.util.SparseArray;
 
-import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.IState;
 import com.android.internal.util.IndentingPrintWriter;
@@ -65,7 +60,7 @@
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
 import com.android.internal.util.WakeupMessage;
-import com.android.server.net.NetlinkTracker;
+import com.android.server.NetworkObserverRegistry;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -339,8 +334,9 @@
     private final Dependencies mDependencies;
     private final CountDownLatch mShutdownLatch;
     private final ConnectivityManager mCm;
-    private final INetworkManagementService mNwService;
-    private final NetlinkTracker mNetlinkTracker;
+    private final INetd mNetd;
+    private final NetworkObserverRegistry mObserverRegistry;
+    private final IpClientLinkObserver mLinkObserver;
     private final WakeupMessage mProvisioningTimeoutAlarm;
     private final WakeupMessage mDhcpActionTimeoutAlarm;
     private final SharedLog mLog;
@@ -374,15 +370,6 @@
     private final ConditionVariable mApfDataSnapshotComplete = new ConditionVariable();
 
     public static class Dependencies {
-        public INetworkManagementService getNMS() {
-            return INetworkManagementService.Stub.asInterface(
-                    ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
-        }
-
-        public INetd getNetd() {
-            return NetdService.getInstance();
-        }
-
         /**
          * Get interface parameters for the specified interface.
          */
@@ -391,26 +378,14 @@
         }
     }
 
-    public IpClient(Context context, String ifName, IIpClientCallbacks callback) {
-        this(context, ifName, callback, new Dependencies());
-    }
-
-    /**
-     * An expanded constructor, useful for dependency injection.
-     * TODO: migrate all test users to mock IpClient directly and remove this ctor.
-     */
     public IpClient(Context context, String ifName, IIpClientCallbacks callback,
-            INetworkManagementService nwService) {
-        this(context, ifName, callback, new Dependencies() {
-            @Override
-            public INetworkManagementService getNMS() {
-                return nwService;
-            }
-        });
+            NetworkObserverRegistry observerRegistry) {
+        this(context, ifName, callback, observerRegistry, new Dependencies());
     }
 
     @VisibleForTesting
-    IpClient(Context context, String ifName, IIpClientCallbacks callback, Dependencies deps) {
+    IpClient(Context context, String ifName, IIpClientCallbacks callback,
+            NetworkObserverRegistry observerRegistry, Dependencies deps) {
         super(IpClient.class.getSimpleName() + "." + ifName);
         Preconditions.checkNotNull(ifName);
         Preconditions.checkNotNull(callback);
@@ -423,7 +398,7 @@
         mDependencies = deps;
         mShutdownLatch = new CountDownLatch(1);
         mCm = mContext.getSystemService(ConnectivityManager.class);
-        mNwService = deps.getNMS();
+        mObserverRegistry = observerRegistry;
 
         sSmLogs.putIfAbsent(mInterfaceName, new SharedLog(MAX_LOG_RECORDS, mTag));
         mLog = sSmLogs.get(mInterfaceName);
@@ -434,19 +409,15 @@
 
         // TODO: Consider creating, constructing, and passing in some kind of
         // InterfaceController.Dependencies class.
-        mInterfaceCtrl = new InterfaceController(mInterfaceName, deps.getNetd(), mLog);
+        mNetd = mContext.getSystemService(INetd.class);
+        mInterfaceCtrl = new InterfaceController(mInterfaceName, mNetd, mLog);
 
-        mNetlinkTracker = new NetlinkTracker(
+        mLinkObserver = new IpClientLinkObserver(
                 mInterfaceName,
-                new NetlinkTracker.Callback() {
-                    @Override
-                    public void update() {
-                        sendMessage(EVENT_NETLINK_LINKPROPERTIES_CHANGED);
-                    }
-                }) {
+                () -> sendMessage(EVENT_NETLINK_LINKPROPERTIES_CHANGED)) {
             @Override
-            public void interfaceAdded(String iface) {
-                super.interfaceAdded(iface);
+            public void onInterfaceAdded(String iface) {
+                super.onInterfaceAdded(iface);
                 if (mClatInterfaceName.equals(iface)) {
                     mCallback.setNeighborDiscoveryOffload(false);
                 } else if (!mInterfaceName.equals(iface)) {
@@ -458,8 +429,8 @@
             }
 
             @Override
-            public void interfaceRemoved(String iface) {
-                super.interfaceRemoved(iface);
+            public void onInterfaceRemoved(String iface) {
+                super.onInterfaceRemoved(iface);
                 // TODO: Also observe mInterfaceName going down and take some
                 // kind of appropriate action.
                 if (mClatInterfaceName.equals(iface)) {
@@ -571,19 +542,11 @@
     }
 
     private void startStateMachineUpdaters() {
-        try {
-            mNwService.registerObserver(mNetlinkTracker);
-        } catch (RemoteException e) {
-            logError("Couldn't register NetlinkTracker: %s", e);
-        }
+        mObserverRegistry.registerObserverForNonblockingCallback(mLinkObserver);
     }
 
     private void stopStateMachineUpdaters() {
-        try {
-            mNwService.unregisterObserver(mNetlinkTracker);
-        } catch (RemoteException e) {
-            logError("Couldn't unregister NetlinkTracker: %s", e);
-        }
+        mObserverRegistry.unregisterObserver(mLinkObserver);
     }
 
     @Override
@@ -806,7 +769,7 @@
     // we should only call this if we know for sure that there are no IP addresses
     // assigned to the interface, etc.
     private void resetLinkProperties() {
-        mNetlinkTracker.clearLinkProperties();
+        mLinkObserver.clearLinkProperties();
         mConfiguration = null;
         mDhcpResults = null;
         mTcpBufferSizes = "";
@@ -985,10 +948,10 @@
         //         - IPv6 DNS servers
         //
         // N.B.: this is fundamentally race-prone and should be fixed by
-        // changing NetlinkTracker from a hybrid edge/level model to an
+        // changing IpClientLinkObserver from a hybrid edge/level model to an
         // edge-only model, or by giving IpClient its own netlink socket(s)
         // so as to track all required information directly.
-        LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties();
+        LinkProperties netlinkLinkProperties = mLinkObserver.getLinkProperties();
         newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses());
         for (RouteInfo route : netlinkLinkProperties.getRoutes()) {
             newLp.addRoute(route);
@@ -1000,7 +963,9 @@
         // mDhcpResults is never shared with any other owner so we don't have
         // to worry about concurrent modification.
         if (mDhcpResults != null) {
-            for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) {
+            final List<RouteInfo> routes =
+                    mDhcpResults.toStaticIpConfiguration().getRoutes(mInterfaceName);
+            for (RouteInfo route : routes) {
                 newLp.addRoute(route);
             }
             addAllReachableDnsServers(newLp, mDhcpResults.dnsServers);
@@ -1026,7 +991,7 @@
             // specified in the InitialConfiguration have been observed with Netlink.
             if (config.isProvisionedBy(newLp.getLinkAddresses(), null)) {
                 for (IpPrefix prefix : config.directlyConnectedRoutes) {
-                    newLp.addRoute(new RouteInfo(prefix, null, mInterfaceName));
+                    newLp.addRoute(new RouteInfo(prefix, null, mInterfaceName, RTN_UNICAST));
                 }
             }
             addAllReachableDnsServers(newLp, config.dnsServers);
@@ -1127,7 +1092,7 @@
         // If we have a StaticIpConfiguration attempt to apply it and
         // handle the result accordingly.
         if (mConfiguration.mStaticIpConfig != null) {
-            if (mInterfaceCtrl.setIPv4Address(mConfiguration.mStaticIpConfig.ipAddress)) {
+            if (mInterfaceCtrl.setIPv4Address(mConfiguration.mStaticIpConfig.getIpAddress())) {
                 handleIPv4Success(new DhcpResults(mConfiguration.mStaticIpConfig));
             } else {
                 return false;
@@ -1165,8 +1130,7 @@
             // necessary or does reading from settings at startup suffice?).
             final int numSolicits = 5;
             final int interSolicitIntervalMs = 750;
-            setNeighborParameters(mDependencies.getNetd(), mInterfaceName,
-                    numSolicits, interSolicitIntervalMs);
+            setNeighborParameters(mNetd, mInterfaceName, numSolicits, interSolicitIntervalMs);
         } catch (Exception e) {
             mLog.e("Failed to adjust neighbor parameters", e);
             // Carry on using the system defaults (currently: 3, 1000);
@@ -1383,10 +1347,8 @@
             apfConfig.apfCapabilities = mConfiguration.mApfCapabilities;
             apfConfig.multicastFilter = mMulticastFiltering;
             // Get the Configuration for ApfFilter from Context
-            apfConfig.ieee802_3Filter =
-                    mContext.getResources().getBoolean(R.bool.config_apfDrop802_3Frames);
-            apfConfig.ethTypeBlackList =
-                    mContext.getResources().getIntArray(R.array.config_apfEthTypeBlackList);
+            apfConfig.ieee802_3Filter = ApfCapabilities.getApfDrop8023Frames(mContext);
+            apfConfig.ethTypeBlackList = ApfCapabilities.getApfEthTypeBlackList(mContext);
             mApfFilter = ApfFilter.maybeCreate(mContext, apfConfig, mInterfaceParams, mCallback);
             // TODO: investigate the effects of any multicast filtering racing/interfering with the
             // rest of this IP configuration startup.
diff --git a/packages/NetworkStack/src/android/net/ip/IpClientLinkObserver.java b/packages/NetworkStack/src/android/net/ip/IpClientLinkObserver.java
new file mode 100644
index 0000000..8ad99aa0
--- /dev/null
+++ b/packages/NetworkStack/src/android/net/ip/IpClientLinkObserver.java
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.ip;
+
+import android.net.InetAddresses;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.RouteInfo;
+import android.util.Log;
+
+import com.android.server.NetworkObserver;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Keeps track of link configuration received from Netd.
+ *
+ * An instance of this class is constructed by passing in an interface name and a callback. The
+ * owner is then responsible for registering the tracker with NetworkObserverRegistry. When the
+ * class receives update notifications, it applies the update to its local LinkProperties, and if
+ * something has changed, notifies its owner of the update via the callback.
+ *
+ * The owner can then call {@code getLinkProperties()} in order to find out
+ * what changed. If in the meantime the LinkProperties stored here have changed,
+ * this class will return the current LinkProperties. Because each change
+ * triggers an update callback after the change is made, the owner may get more
+ * callbacks than strictly necessary (some of which may be no-ops), but will not
+ * be out of sync once all callbacks have been processed.
+ *
+ * Threading model:
+ *
+ * - The owner of this class is expected to create it, register it, and call
+ *   getLinkProperties or clearLinkProperties on its thread.
+ * - Most of the methods in the class are implementing NetworkObserver and are called
+ *   on the handler used to register the observer.
+ * - All accesses to mLinkProperties must be synchronized(this). All the other
+ *   member variables are immutable once the object is constructed.
+ *
+ * @hide
+ */
+public class IpClientLinkObserver implements NetworkObserver {
+    private final String mTag;
+
+    /**
+     * Callback used by {@link IpClientLinkObserver} to send update notifications.
+     */
+    public interface Callback {
+        /**
+         * Called when some properties of the link were updated.
+         */
+        void update();
+    }
+
+    private final String mInterfaceName;
+    private final Callback mCallback;
+    private final LinkProperties mLinkProperties;
+    private DnsServerRepository mDnsServerRepository;
+
+    private static final boolean DBG = false;
+
+    public IpClientLinkObserver(String iface, Callback callback) {
+        mTag = "NetlinkTracker/" + iface;
+        mInterfaceName = iface;
+        mCallback = callback;
+        mLinkProperties = new LinkProperties();
+        mLinkProperties.setInterfaceName(mInterfaceName);
+        mDnsServerRepository = new DnsServerRepository();
+    }
+
+    private void maybeLog(String operation, String iface, LinkAddress address) {
+        if (DBG) {
+            Log.d(mTag, operation + ": " + address + " on " + iface
+                    + " flags " + address.getFlags() + " scope " + address.getScope());
+        }
+    }
+
+    private void maybeLog(String operation, Object o) {
+        if (DBG) {
+            Log.d(mTag, operation + ": " + o.toString());
+        }
+    }
+
+    @Override
+    public void onInterfaceRemoved(String iface) {
+        maybeLog("interfaceRemoved", iface);
+        if (mInterfaceName.equals(iface)) {
+            // Our interface was removed. Clear our LinkProperties and tell our owner that they are
+            // now empty. Note that from the moment that the interface is removed, any further
+            // interface-specific messages (e.g., RTM_DELADDR) will not reach us, because the netd
+            // code that parses them will not be able to resolve the ifindex to an interface name.
+            clearLinkProperties();
+            mCallback.update();
+        }
+    }
+
+    @Override
+    public void onInterfaceAddressUpdated(LinkAddress address, String iface) {
+        if (mInterfaceName.equals(iface)) {
+            maybeLog("addressUpdated", iface, address);
+            boolean changed;
+            synchronized (this) {
+                changed = mLinkProperties.addLinkAddress(address);
+            }
+            if (changed) {
+                mCallback.update();
+            }
+        }
+    }
+
+    @Override
+    public void onInterfaceAddressRemoved(LinkAddress address, String iface) {
+        if (mInterfaceName.equals(iface)) {
+            maybeLog("addressRemoved", iface, address);
+            boolean changed;
+            synchronized (this) {
+                changed = mLinkProperties.removeLinkAddress(address);
+            }
+            if (changed) {
+                mCallback.update();
+            }
+        }
+    }
+
+    @Override
+    public void onRouteUpdated(RouteInfo route) {
+        if (mInterfaceName.equals(route.getInterface())) {
+            maybeLog("routeUpdated", route);
+            boolean changed;
+            synchronized (this) {
+                changed = mLinkProperties.addRoute(route);
+            }
+            if (changed) {
+                mCallback.update();
+            }
+        }
+    }
+
+    @Override
+    public void onRouteRemoved(RouteInfo route) {
+        if (mInterfaceName.equals(route.getInterface())) {
+            maybeLog("routeRemoved", route);
+            boolean changed;
+            synchronized (this) {
+                changed = mLinkProperties.removeRoute(route);
+            }
+            if (changed) {
+                mCallback.update();
+            }
+        }
+    }
+
+    @Override
+    public void onInterfaceDnsServerInfo(String iface, long lifetime, String[] addresses) {
+        if (mInterfaceName.equals(iface)) {
+            maybeLog("interfaceDnsServerInfo", Arrays.toString(addresses));
+            boolean changed = mDnsServerRepository.addServers(lifetime, addresses);
+            if (changed) {
+                synchronized (this) {
+                    mDnsServerRepository.setDnsServersOn(mLinkProperties);
+                }
+                mCallback.update();
+            }
+        }
+    }
+
+    /**
+     * Returns a copy of this object's LinkProperties.
+     */
+    public synchronized LinkProperties getLinkProperties() {
+        return new LinkProperties(mLinkProperties);
+    }
+
+    /**
+     * Reset this object's LinkProperties.
+     */
+    public synchronized void clearLinkProperties() {
+        // Clear the repository before clearing mLinkProperties. That way, if a clear() happens
+        // while interfaceDnsServerInfo() is being called, we'll end up with no DNS servers in
+        // mLinkProperties, as desired.
+        mDnsServerRepository = new DnsServerRepository();
+        mLinkProperties.clear();
+        mLinkProperties.setInterfaceName(mInterfaceName);
+    }
+
+    /**
+     * Tracks DNS server updates received from Netlink.
+     *
+     * The network may announce an arbitrary number of DNS servers in Router Advertisements at any
+     * time. Each announcement has a lifetime; when the lifetime expires, the servers should not be
+     * used any more. In this way, the network can gracefully migrate clients from one set of DNS
+     * servers to another. Announcements can both raise and lower the lifetime, and an announcement
+     * can expire servers by announcing them with a lifetime of zero.
+     *
+     * Typically the system will only use a small number (2 or 3; {@code NUM_CURRENT_SERVERS}) of
+     * DNS servers at any given time. These are referred to as the current servers. In case all the
+     * current servers expire, the class also keeps track of a larger (but limited) number of
+     * servers that are promoted to current servers when the current ones expire. In order to
+     * minimize updates to the rest of the system (and potentially expensive cache flushes) this
+     * class attempts to keep the list of current servers constant where possible. More
+     * specifically, the list of current servers is only updated if a new server is learned and
+     * there are not yet {@code NUM_CURRENT_SERVERS} current servers, or if one or more of the
+     * current servers expires or is pushed out of the set. Therefore, the current servers will not
+     * necessarily be the ones with the highest lifetime, but the ones learned first.
+     *
+     * This is by design: if instead the class always preferred the servers with the highest
+     * lifetime, a (misconfigured?) network where two or more routers announce more than
+     * {@code NUM_CURRENT_SERVERS} unique servers would cause persistent oscillations.
+     *
+     * TODO: Currently servers are only expired when a new DNS update is received.
+     * Update them using timers, or possibly on every notification received by NetlinkTracker.
+     *
+     * Threading model: run by NetlinkTracker. Methods are synchronized(this) just in case netlink
+     * notifications are sent by multiple threads. If future threads use alarms to expire, those
+     * alarms must also be synchronized(this).
+     *
+     */
+    private static class DnsServerRepository {
+
+        /** How many DNS servers we will use. 3 is suggested by RFC 6106. */
+        static final int NUM_CURRENT_SERVERS = 3;
+
+        /** How many DNS servers we'll keep track of, in total. */
+        static final int NUM_SERVERS = 12;
+
+        /** Stores up to {@code NUM_CURRENT_SERVERS} DNS servers we're currently using. */
+        private Set<InetAddress> mCurrentServers;
+
+        public static final String TAG = "DnsServerRepository";
+
+        /**
+         * Stores all the DNS servers we know about, for use when the current servers expire.
+         * Always sorted in order of decreasing expiry. The elements in this list are also the
+         * values of mIndex, and may be elements in mCurrentServers.
+         */
+        private ArrayList<DnsServerEntry> mAllServers;
+
+        /**
+         * Indexes the servers so we can update their lifetimes more quickly in the common case
+         * where servers are not being added, but only being refreshed.
+         */
+        private HashMap<InetAddress, DnsServerEntry> mIndex;
+
+        DnsServerRepository() {
+            mCurrentServers = new HashSet<>();
+            mAllServers = new ArrayList<>(NUM_SERVERS);
+            mIndex = new HashMap<>(NUM_SERVERS);
+        }
+
+        /** Sets the DNS servers of the provided LinkProperties object to the current servers. */
+        public synchronized void setDnsServersOn(LinkProperties lp) {
+            lp.setDnsServers(mCurrentServers);
+        }
+
+        /**
+         * Notifies the class of new DNS server information.
+         * @param lifetime the time in seconds that the DNS servers are valid.
+         * @param addresses the string representations of the IP addresses of DNS servers to use.
+         */
+        public synchronized boolean addServers(long lifetime, String[] addresses) {
+            // The lifetime is actually an unsigned 32-bit number, but Java doesn't have unsigned.
+            // Technically 0xffffffff (the maximum) is special and means "forever", but 2^32 seconds
+            // (136 years) is close enough.
+            long now = System.currentTimeMillis();
+            long expiry = now + 1000 * lifetime;
+
+            // Go through the list of servers. For each one, update the entry if one exists, and
+            // create one if it doesn't.
+            for (String addressString : addresses) {
+                InetAddress address;
+                try {
+                    address = InetAddresses.parseNumericAddress(addressString);
+                } catch (IllegalArgumentException ex) {
+                    continue;
+                }
+
+                if (!updateExistingEntry(address, expiry)) {
+                    // There was no entry for this server. Create one, unless it's already expired
+                    // (i.e., if the lifetime is zero; it cannot be < 0 because it's unsigned).
+                    if (expiry > now) {
+                        DnsServerEntry entry = new DnsServerEntry(address, expiry);
+                        mAllServers.add(entry);
+                        mIndex.put(address, entry);
+                    }
+                }
+            }
+
+            // Sort the servers by expiry.
+            Collections.sort(mAllServers);
+
+            // Prune excess entries and update the current server list.
+            return updateCurrentServers();
+        }
+
+        private synchronized boolean updateExistingEntry(InetAddress address, long expiry) {
+            DnsServerEntry existing = mIndex.get(address);
+            if (existing != null) {
+                existing.expiry = expiry;
+                return true;
+            }
+            return false;
+        }
+
+        private synchronized boolean updateCurrentServers() {
+            long now = System.currentTimeMillis();
+            boolean changed = false;
+
+            // Prune excess or expired entries.
+            for (int i = mAllServers.size() - 1; i >= 0; i--) {
+                if (i >= NUM_SERVERS || mAllServers.get(i).expiry < now) {
+                    DnsServerEntry removed = mAllServers.remove(i);
+                    mIndex.remove(removed.address);
+                    changed |= mCurrentServers.remove(removed.address);
+                } else {
+                    break;
+                }
+            }
+
+            // Add servers to the current set, in order of decreasing lifetime, until it has enough.
+            // Prefer existing servers over new servers in order to minimize updates to the rest of
+            // the system and avoid persistent oscillations.
+            for (DnsServerEntry entry : mAllServers) {
+                if (mCurrentServers.size() < NUM_CURRENT_SERVERS) {
+                    changed |= mCurrentServers.add(entry.address);
+                } else {
+                    break;
+                }
+            }
+            return changed;
+        }
+    }
+
+    /**
+     * Represents a DNS server entry with an expiry time.
+     *
+     * Implements Comparable so DNS server entries can be sorted by lifetime, longest-lived first.
+     * The ordering of entries with the same lifetime is unspecified, because given two servers with
+     * identical lifetimes, we don't care which one we use, and only comparing the lifetime is much
+     * faster than comparing the IP address as well.
+     *
+     * Note: this class has a natural ordering that is inconsistent with equals.
+     */
+    private static class DnsServerEntry implements Comparable<DnsServerEntry> {
+        /** The IP address of the DNS server. */
+        public final InetAddress address;
+        /** The time until which the DNS server may be used. A Java millisecond time as might be
+         * returned by currentTimeMillis(). */
+        public long expiry;
+
+        DnsServerEntry(InetAddress address, long expiry) throws IllegalArgumentException {
+            this.address = address;
+            this.expiry = expiry;
+        }
+
+        public int compareTo(DnsServerEntry other) {
+            return Long.compare(other.expiry, this.expiry);
+        }
+    }
+}
diff --git a/packages/NetworkStack/src/android/net/ip/IpNeighborMonitor.java b/packages/NetworkStack/src/android/net/ip/IpNeighborMonitor.java
index eb993a4..b29d617 100644
--- a/packages/NetworkStack/src/android/net/ip/IpNeighborMonitor.java
+++ b/packages/NetworkStack/src/android/net/ip/IpNeighborMonitor.java
@@ -20,6 +20,10 @@
 import static android.net.netlink.NetlinkConstants.hexify;
 import static android.net.netlink.NetlinkConstants.stringForNlMsgType;
 import static android.net.util.SocketUtils.makeNetlinkSocketAddress;
+import static android.system.OsConstants.AF_NETLINK;
+import static android.system.OsConstants.NETLINK_ROUTE;
+import static android.system.OsConstants.SOCK_DGRAM;
+import static android.system.OsConstants.SOCK_NONBLOCK;
 
 import android.net.MacAddress;
 import android.net.netlink.NetlinkErrorMessage;
@@ -27,8 +31,10 @@
 import android.net.netlink.NetlinkSocket;
 import android.net.netlink.RtNetlinkNeighborMessage;
 import android.net.netlink.StructNdMsg;
+import android.net.util.NetworkStackUtils;
 import android.net.util.PacketReader;
 import android.net.util.SharedLog;
+import android.net.util.SocketUtils;
 import android.os.Handler;
 import android.os.SystemClock;
 import android.system.ErrnoException;
@@ -36,10 +42,6 @@
 import android.system.OsConstants;
 import android.util.Log;
 
-import com.android.internal.util.BitUtils;
-
-import libcore.io.IoUtils;
-
 import java.io.FileDescriptor;
 import java.net.InetAddress;
 import java.net.SocketAddress;
@@ -79,7 +81,7 @@
                 1, ip, StructNdMsg.NUD_PROBE, ifIndex, null);
 
         try {
-            NetlinkSocket.sendOneShotKernelMessage(OsConstants.NETLINK_ROUTE, msg);
+            NetlinkSocket.sendOneShotKernelMessage(NETLINK_ROUTE, msg);
         } catch (ErrnoException e) {
             Log.e(TAG, "Error " + msgSnippet + ": " + e);
             return -e.errno;
@@ -147,8 +149,8 @@
         FileDescriptor fd = null;
 
         try {
-            fd = NetlinkSocket.forProto(OsConstants.NETLINK_ROUTE);
-            Os.bind(fd, makeNetlinkSocketAddress(0, OsConstants.RTMGRP_NEIGH));
+            fd = Os.socket(AF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, NETLINK_ROUTE);
+            SocketUtils.bindSocket(fd, makeNetlinkSocketAddress(0, OsConstants.RTMGRP_NEIGH));
             NetlinkSocket.connectToKernel(fd);
 
             if (VDBG) {
@@ -157,7 +159,7 @@
             }
         } catch (ErrnoException|SocketException e) {
             logError("Failed to create rtnetlink socket", e);
-            IoUtils.closeQuietly(fd);
+            NetworkStackUtils.closeSocketQuietly(fd);
             return null;
         }
 
@@ -186,7 +188,7 @@
 
             final int srcPortId = nlMsg.getHeader().nlmsg_pid;
             if (srcPortId !=  0) {
-                mLog.e("non-kernel source portId: " + BitUtils.uint32(srcPortId));
+                mLog.e("non-kernel source portId: " + Integer.toUnsignedLong(srcPortId));
                 break;
             }
 
diff --git a/packages/NetworkStack/src/android/net/ip/IpReachabilityMonitor.java b/packages/NetworkStack/src/android/net/ip/IpReachabilityMonitor.java
index 761db68..76a0338 100644
--- a/packages/NetworkStack/src/android/net/ip/IpReachabilityMonitor.java
+++ b/packages/NetworkStack/src/android/net/ip/IpReachabilityMonitor.java
@@ -31,15 +31,15 @@
 import android.net.netlink.StructNdMsg;
 import android.net.util.InterfaceParams;
 import android.net.util.SharedLog;
+import android.os.ConditionVariable;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.PowerManager;
 import android.os.PowerManager.WakeLock;
 import android.os.SystemClock;
 import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.util.DumpUtils;
-import com.android.internal.util.DumpUtils.Dump;
 
 import java.io.PrintWriter;
 import java.net.Inet6Address;
@@ -215,15 +215,20 @@
     }
 
     public void dump(PrintWriter pw) {
-        DumpUtils.dumpAsync(
-                mIpNeighborMonitor.getHandler(),
-                new Dump() {
-                    @Override
-                    public void dump(PrintWriter pw, String prefix) {
-                        pw.println(describeWatchList("\n"));
-                    }
-                },
-                pw, "", 1000);
+        if (Looper.myLooper() == mIpNeighborMonitor.getHandler().getLooper()) {
+            pw.println(describeWatchList("\n"));
+            return;
+        }
+
+        final ConditionVariable cv = new ConditionVariable(false);
+        mIpNeighborMonitor.getHandler().post(() -> {
+            pw.println(describeWatchList("\n"));
+            cv.open();
+        });
+
+        if (!cv.block(1000)) {
+            pw.println("Timed out waiting for IpReachabilityMonitor dump");
+        }
     }
 
     private String describeWatchList() { return describeWatchList(" "); }
diff --git a/packages/NetworkStack/src/android/net/util/NetworkStackUtils.java b/packages/NetworkStack/src/android/net/util/NetworkStackUtils.java
new file mode 100644
index 0000000..98123a5
--- /dev/null
+++ b/packages/NetworkStack/src/android/net/util/NetworkStackUtils.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.util;
+
+import java.io.FileDescriptor;
+import java.io.IOException;
+
+/**
+ * Collection of utilities for the network stack.
+ */
+public class NetworkStackUtils {
+
+    /**
+     * @return True if the array is null or 0-length.
+     */
+    public static <T> boolean isEmpty(T[] array) {
+        return array == null || array.length == 0;
+    }
+
+    /**
+     * Close a socket, ignoring any exception while closing.
+     */
+    public static void closeSocketQuietly(FileDescriptor fd) {
+        try {
+            SocketUtils.closeSocket(fd);
+        } catch (IOException ignored) {
+        }
+    }
+}
diff --git a/packages/NetworkStack/src/android/net/util/PacketReader.java b/packages/NetworkStack/src/android/net/util/PacketReader.java
index 4aec6b6..94b1e9f 100644
--- a/packages/NetworkStack/src/android/net/util/PacketReader.java
+++ b/packages/NetworkStack/src/android/net/util/PacketReader.java
@@ -18,6 +18,7 @@
 
 import static java.lang.Math.max;
 
+import android.net.shared.FdEventsReader;
 import android.os.Handler;
 import android.system.Os;
 
diff --git a/packages/NetworkStack/src/com/android/server/NetworkObserver.java b/packages/NetworkStack/src/com/android/server/NetworkObserver.java
new file mode 100644
index 0000000..cccec0b
--- /dev/null
+++ b/packages/NetworkStack/src/com/android/server/NetworkObserver.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import android.net.LinkAddress;
+import android.net.RouteInfo;
+
+/**
+ * Observer for network events, to use with {@link NetworkObserverRegistry}.
+ */
+public interface NetworkObserver {
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener#onInterfaceChanged(java.lang.String, boolean)
+     */
+    default void onInterfaceChanged(String ifName, boolean up) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener#onInterfaceRemoved(String)
+     */
+    default void onInterfaceRemoved(String ifName) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onInterfaceAddressUpdated(String, String, int, int)
+     */
+    default void onInterfaceAddressUpdated(LinkAddress address, String ifName) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onInterfaceAddressRemoved(String, String, int, int)
+     */
+    default void onInterfaceAddressRemoved(LinkAddress address, String ifName) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener#onInterfaceLinkStateChanged(String, boolean)
+     */
+    default void onInterfaceLinkStateChanged(String ifName, boolean up) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener#onInterfaceAdded(String)
+     */
+    default void onInterfaceAdded(String ifName) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onInterfaceClassActivityChanged(boolean, int, long, int)
+     */
+    default void onInterfaceClassActivityChanged(
+            boolean isActive, int label, long timestamp, int uid) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener#onQuotaLimitReached(String, String)
+     */
+    default void onQuotaLimitReached(String alertName, String ifName) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onInterfaceDnsServerInfo(String, long, String[])
+     */
+    default void onInterfaceDnsServerInfo(String ifName, long lifetime, String[] servers) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onRouteChanged(boolean, String, String, String)
+     */
+    default void onRouteUpdated(RouteInfo route) {}
+
+    /**
+     * @see android.net.INetdUnsolicitedEventListener
+     *          #onRouteChanged(boolean, String, String, String)
+     */
+    default void onRouteRemoved(RouteInfo route) {}
+}
diff --git a/packages/NetworkStack/src/com/android/server/NetworkObserverRegistry.java b/packages/NetworkStack/src/com/android/server/NetworkObserverRegistry.java
new file mode 100644
index 0000000..6fb4b0d
--- /dev/null
+++ b/packages/NetworkStack/src/com/android/server/NetworkObserverRegistry.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.server;
+
+import static android.net.RouteInfo.RTN_UNICAST;
+
+import android.annotation.NonNull;
+import android.net.INetd;
+import android.net.INetdUnsolicitedEventListener;
+import android.net.InetAddresses;
+import android.net.IpPrefix;
+import android.net.LinkAddress;
+import android.net.RouteInfo;
+import android.os.Handler;
+import android.os.RemoteException;
+import android.util.Log;
+
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * A class for reporting network events to clients.
+ *
+ * Implements INetdUnsolicitedEventListener and registers with netd, and relays those events to
+ * all INetworkManagementEventObserver objects that have registered with it.
+ */
+public class NetworkObserverRegistry extends INetdUnsolicitedEventListener.Stub {
+    private static final String TAG = NetworkObserverRegistry.class.getSimpleName();
+
+    /**
+     * Constructs a new NetworkObserverRegistry.
+     *
+     * <p>Only one registry should be used per process since netd will silently ignore multiple
+     * registrations from the same process.
+     */
+    NetworkObserverRegistry() {}
+
+    /**
+     * Start listening for Netd events.
+     *
+     * <p>This should be called before allowing any observer to be registered.
+     */
+    void register(@NonNull INetd netd) throws RemoteException {
+        netd.registerUnsolicitedEventListener(this);
+    }
+
+    private final ConcurrentHashMap<NetworkObserver, Optional<Handler>> mObservers =
+            new ConcurrentHashMap<>();
+
+    /**
+     * Registers the specified observer and start sending callbacks to it.
+     * This method may be called on any thread.
+     */
+    public void registerObserver(@NonNull NetworkObserver observer, @NonNull Handler handler) {
+        if (handler == null) {
+            throw new IllegalArgumentException("handler must be non-null");
+        }
+        mObservers.put(observer, Optional.of(handler));
+    }
+
+    /**
+     * Registers the specified observer, and start sending callbacks to it.
+     *
+     * <p>This method must only be called with callbacks that are nonblocking, such as callbacks
+     * that only send a message to a StateMachine.
+     */
+    public void registerObserverForNonblockingCallback(@NonNull NetworkObserver observer) {
+        mObservers.put(observer, Optional.empty());
+    }
+
+    /**
+     * Unregisters the specified observer and stop sending callbacks to it.
+     * This method may be called on any thread.
+     */
+    public void unregisterObserver(@NonNull NetworkObserver observer) {
+        mObservers.remove(observer);
+    }
+
+    @FunctionalInterface
+    private interface NetworkObserverEventCallback {
+        void sendCallback(NetworkObserver o);
+    }
+
+    private void invokeForAllObservers(@NonNull final NetworkObserverEventCallback callback) {
+        // ConcurrentHashMap#entrySet is weakly consistent: observers that were in the map before
+        // creation will be processed, those added during traversal may or may not.
+        for (Map.Entry<NetworkObserver, Optional<Handler>> entry : mObservers.entrySet()) {
+            final NetworkObserver observer = entry.getKey();
+            final Optional<Handler> handler = entry.getValue();
+            if (handler.isPresent()) {
+                handler.get().post(() -> callback.sendCallback(observer));
+                return;
+            }
+
+            try {
+                callback.sendCallback(observer);
+            } catch (RuntimeException e) {
+                Log.e(TAG, "Error sending callback to observer", e);
+            }
+        }
+    }
+
+    @Override
+    public void onInterfaceClassActivityChanged(boolean isActive,
+            int label, long timestamp, int uid) {
+        invokeForAllObservers(o -> o.onInterfaceClassActivityChanged(
+                isActive, label, timestamp, uid));
+    }
+
+    /**
+     * Notify our observers of a limit reached.
+     */
+    @Override
+    public void onQuotaLimitReached(String alertName, String ifName) {
+        invokeForAllObservers(o -> o.onQuotaLimitReached(alertName, ifName));
+    }
+
+    @Override
+    public void onInterfaceDnsServerInfo(String ifName, long lifetime, String[] servers) {
+        invokeForAllObservers(o -> o.onInterfaceDnsServerInfo(ifName, lifetime, servers));
+    }
+
+    @Override
+    public void onInterfaceAddressUpdated(String addr, String ifName, int flags, int scope) {
+        final LinkAddress address = new LinkAddress(addr, flags, scope);
+        invokeForAllObservers(o -> o.onInterfaceAddressUpdated(address, ifName));
+    }
+
+    @Override
+    public void onInterfaceAddressRemoved(String addr,
+            String ifName, int flags, int scope) {
+        final LinkAddress address = new LinkAddress(addr, flags, scope);
+        invokeForAllObservers(o -> o.onInterfaceAddressRemoved(address, ifName));
+    }
+
+    @Override
+    public void onInterfaceAdded(String ifName) {
+        invokeForAllObservers(o -> o.onInterfaceAdded(ifName));
+    }
+
+    @Override
+    public void onInterfaceRemoved(String ifName) {
+        invokeForAllObservers(o -> o.onInterfaceRemoved(ifName));
+    }
+
+    @Override
+    public void onInterfaceChanged(String ifName, boolean up) {
+        invokeForAllObservers(o -> o.onInterfaceChanged(ifName, up));
+    }
+
+    @Override
+    public void onInterfaceLinkStateChanged(String ifName, boolean up) {
+        invokeForAllObservers(o -> o.onInterfaceLinkStateChanged(ifName, up));
+    }
+
+    @Override
+    public void onRouteChanged(boolean updated, String route, String gateway, String ifName) {
+        final RouteInfo processRoute = new RouteInfo(new IpPrefix(route),
+                ("".equals(gateway)) ? null : InetAddresses.parseNumericAddress(gateway),
+                ifName, RTN_UNICAST);
+        if (updated) {
+            invokeForAllObservers(o -> o.onRouteUpdated(processRoute));
+        } else {
+            invokeForAllObservers(o -> o.onRouteRemoved(processRoute));
+        }
+    }
+
+    @Override
+    public void onStrictCleartextDetected(int uid, String hex) {}
+}
diff --git a/packages/NetworkStack/src/com/android/server/NetworkStackService.java b/packages/NetworkStack/src/com/android/server/NetworkStackService.java
index 4080ddf..cedcb84 100644
--- a/packages/NetworkStack/src/com/android/server/NetworkStackService.java
+++ b/packages/NetworkStack/src/com/android/server/NetworkStackService.java
@@ -19,6 +19,7 @@
 import static android.net.dhcp.IDhcpServer.STATUS_INVALID_ARGUMENT;
 import static android.net.dhcp.IDhcpServer.STATUS_SUCCESS;
 import static android.net.dhcp.IDhcpServer.STATUS_UNKNOWN_ERROR;
+import static android.net.shared.NetworkParcelableUtil.fromStableParcelable;
 
 import static com.android.server.util.PermissionUtil.checkDumpPermission;
 import static com.android.server.util.PermissionUtil.checkNetworkStackCallingPermission;
@@ -29,11 +30,12 @@
 import android.content.Context;
 import android.content.Intent;
 import android.net.ConnectivityManager;
+import android.net.INetd;
 import android.net.INetworkMonitor;
 import android.net.INetworkMonitorCallbacks;
 import android.net.INetworkStackConnector;
 import android.net.Network;
-import android.net.NetworkRequest;
+import android.net.NetworkParcelable;
 import android.net.PrivateDnsConfigParcel;
 import android.net.dhcp.DhcpServer;
 import android.net.dhcp.DhcpServingParams;
@@ -65,6 +67,7 @@
  */
 public class NetworkStackService extends Service {
     private static final String TAG = NetworkStackService.class.getSimpleName();
+    private static NetworkStackConnector sConnector;
 
     /**
      * Create a binder connector for the system server to communicate with the network stack.
@@ -72,8 +75,11 @@
      * <p>On platforms where the network stack runs in the system server process, this method may
      * be called directly instead of obtaining the connector by binding to the service.
      */
-    public static IBinder makeConnector(Context context) {
-        return new NetworkStackConnector(context);
+    public static synchronized IBinder makeConnector(Context context) {
+        if (sConnector == null) {
+            sConnector = new NetworkStackConnector(context);
+        }
+        return sConnector;
     }
 
     @NonNull
@@ -85,6 +91,8 @@
     private static class NetworkStackConnector extends INetworkStackConnector.Stub {
         private static final int NUM_VALIDATION_LOG_LINES = 20;
         private final Context mContext;
+        private final INetd mNetd;
+        private final NetworkObserverRegistry mObserverRegistry;
         private final ConnectivityManager mCm;
         @GuardedBy("mIpClients")
         private final ArrayList<WeakReference<IpClient>> mIpClients = new ArrayList<>();
@@ -106,7 +114,15 @@
 
         NetworkStackConnector(Context context) {
             mContext = context;
+            mNetd = (INetd) context.getSystemService(Context.NETD_SERVICE);
+            mObserverRegistry = new NetworkObserverRegistry();
             mCm = context.getSystemService(ConnectivityManager.class);
+
+            try {
+                mObserverRegistry.register(mNetd);
+            } catch (RemoteException e) {
+                mLog.e("Error registering observer on Netd", e);
+            }
         }
 
         @NonNull
@@ -135,19 +151,18 @@
         }
 
         @Override
-        public void makeNetworkMonitor(int netId, String name, INetworkMonitorCallbacks cb)
+        public void makeNetworkMonitor(
+                NetworkParcelable network, String name, INetworkMonitorCallbacks cb)
                 throws RemoteException {
-            final Network network = new Network(netId, false /* privateDnsBypass */);
-            final NetworkRequest defaultRequest = mCm.getDefaultRequest();
-            final SharedLog log = addValidationLogs(network, name);
-            final NetworkMonitor nm = new NetworkMonitor(
-                    mContext, cb, network, defaultRequest, log);
+            final Network parsedNetwork = fromStableParcelable(network);
+            final SharedLog log = addValidationLogs(parsedNetwork, name);
+            final NetworkMonitor nm = new NetworkMonitor(mContext, cb, parsedNetwork, log);
             cb.onNetworkMonitorCreated(new NetworkMonitorImpl(nm));
         }
 
         @Override
         public void makeIpClient(String ifName, IIpClientCallbacks cb) throws RemoteException {
-            final IpClient ipClient = new IpClient(mContext, ifName, cb);
+            final IpClient ipClient = new IpClient(mContext, ifName, cb, mObserverRegistry);
 
             synchronized (mIpClients) {
                 final Iterator<WeakReference<IpClient>> it = mIpClients.iterator();
diff --git a/packages/NetworkStack/src/com/android/server/connectivity/NetworkMonitor.java b/packages/NetworkStack/src/com/android/server/connectivity/NetworkMonitor.java
index 6b31b82..f21561f 100644
--- a/packages/NetworkStack/src/com/android/server/connectivity/NetworkMonitor.java
+++ b/packages/NetworkStack/src/com/android/server/connectivity/NetworkMonitor.java
@@ -31,6 +31,7 @@
 import static android.net.metrics.ValidationProbeEvent.DNS_SUCCESS;
 import static android.net.metrics.ValidationProbeEvent.PROBE_FALLBACK;
 import static android.net.metrics.ValidationProbeEvent.PROBE_PRIVDNS;
+import static android.net.util.NetworkStackUtils.isEmpty;
 
 import android.annotation.Nullable;
 import android.app.PendingIntent;
@@ -46,7 +47,6 @@
 import android.net.LinkProperties;
 import android.net.Network;
 import android.net.NetworkCapabilities;
-import android.net.NetworkRequest;
 import android.net.ProxyInfo;
 import android.net.TrafficStats;
 import android.net.Uri;
@@ -80,7 +80,6 @@
 import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.RingBufferIndices;
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
@@ -93,6 +92,7 @@
 import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -309,14 +309,14 @@
     private long mLastProbeTime;
 
     public NetworkMonitor(Context context, INetworkMonitorCallbacks cb, Network network,
-            NetworkRequest defaultRequest, SharedLog validationLog) {
-        this(context, cb, network, defaultRequest, new IpConnectivityLog(), validationLog,
+            SharedLog validationLog) {
+        this(context, cb, network, new IpConnectivityLog(), validationLog,
                 Dependencies.DEFAULT);
     }
 
     @VisibleForTesting
     protected NetworkMonitor(Context context, INetworkMonitorCallbacks cb, Network network,
-            NetworkRequest defaultRequest, IpConnectivityLog logger, SharedLog validationLogs,
+            IpConnectivityLog logger, SharedLog validationLogs,
             Dependencies deps) {
         // Add suffix indicating which NetworkMonitor we're talking about.
         super(TAG + "/" + network.toString());
@@ -368,8 +368,7 @@
         // we can ever fetch them.
         // TODO: Delete ASAP.
         mLinkProperties = new LinkProperties();
-        mNetworkCapabilities = new NetworkCapabilities();
-        mNetworkCapabilities.clearAll();
+        mNetworkCapabilities = new NetworkCapabilities(null);
     }
 
     /**
@@ -1146,7 +1145,10 @@
                 return null;
             }
 
-            return CaptivePortalProbeSpec.parseCaptivePortalProbeSpecs(settingsValue);
+            final Collection<CaptivePortalProbeSpec> specs =
+                    CaptivePortalProbeSpec.parseCaptivePortalProbeSpecs(settingsValue);
+            final CaptivePortalProbeSpec[] specsArray = new CaptivePortalProbeSpec[specs.size()];
+            return specs.toArray(specsArray);
         } catch (Exception e) {
             // Don't let a misconfiguration bootloop the system.
             Log.e(TAG, "Error parsing configured fallback probe specs", e);
@@ -1169,7 +1171,7 @@
     }
 
     private CaptivePortalProbeSpec nextFallbackSpec() {
-        if (ArrayUtils.isEmpty(mCaptivePortalFallbackSpecs)) {
+        if (isEmpty(mCaptivePortalFallbackSpecs)) {
             return null;
         }
         // Randomly change spec without memory. Also randomize the first attempt.
diff --git a/packages/NetworkStack/src/com/android/server/util/NetworkStackConstants.java b/packages/NetworkStack/src/com/android/server/util/NetworkStackConstants.java
index eedaf30..804765e 100644
--- a/packages/NetworkStack/src/com/android/server/util/NetworkStackConstants.java
+++ b/packages/NetworkStack/src/com/android/server/util/NetworkStackConstants.java
@@ -16,6 +16,10 @@
 
 package com.android.server.util;
 
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+
+import java.net.Inet4Address;
+
 /**
  * Network constants used by the network stack.
  */
@@ -79,6 +83,8 @@
     public static final int IPV4_SRC_ADDR_OFFSET = 12;
     public static final int IPV4_DST_ADDR_OFFSET = 16;
     public static final int IPV4_ADDR_LEN = 4;
+    public static final Inet4Address IPV4_ADDR_ALL = intToInet4AddressHTH(0xffffffff);
+    public static final Inet4Address IPV4_ADDR_ANY = intToInet4AddressHTH(0x0);
 
     /**
      * IPv6 constants.
diff --git a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpLeaseRepositoryTest.java b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpLeaseRepositoryTest.java
index 51d50d9..4abd77e 100644
--- a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpLeaseRepositoryTest.java
+++ b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpLeaseRepositoryTest.java
@@ -21,6 +21,8 @@
 import static android.net.dhcp.DhcpLeaseRepository.CLIENTID_UNSPEC;
 import static android.net.dhcp.DhcpLeaseRepository.INETADDR_UNSPEC;
 
+import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_ANY;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotEquals;
@@ -55,7 +57,6 @@
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class DhcpLeaseRepositoryTest {
-    private static final Inet4Address INET4_ANY = (Inet4Address) Inet4Address.ANY;
     private static final Inet4Address TEST_DEF_ROUTER = parseAddr4("192.168.42.247");
     private static final Inet4Address TEST_SERVER_ADDR = parseAddr4("192.168.42.241");
     private static final Inet4Address TEST_RESERVED_ADDR = parseAddr4("192.168.42.243");
@@ -108,7 +109,7 @@
             MacAddress newMac = MacAddress.fromBytes(hwAddrBytes);
             final String hostname = "host_" + i;
             final DhcpLease lease = mRepo.getOffer(CLIENTID_UNSPEC, newMac,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, hostname);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, hostname);
 
             assertNotNull(lease);
             assertEquals(newMac, lease.getHwAddr());
@@ -130,7 +131,7 @@
 
         try {
             mRepo.getOffer(null, TEST_MAC_2,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
             fail("Should be out of addresses");
         } catch (DhcpLeaseRepository.OutOfAddressesException e) {
             // Expected
@@ -181,11 +182,11 @@
     public void testGetOffer_StableAddress() throws Exception {
         for (final MacAddress macAddr : new MacAddress[] { TEST_MAC_1, TEST_MAC_2, TEST_MAC_3 }) {
             final DhcpLease lease = mRepo.getOffer(CLIENTID_UNSPEC, macAddr,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
 
             // Same lease is offered twice
             final DhcpLease newLease = mRepo.getOffer(CLIENTID_UNSPEC, macAddr,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
             assertEquals(lease, newLease);
         }
     }
@@ -196,7 +197,7 @@
         mRepo.updateParams(newPrefix, TEST_EXCL_SET, TEST_LEASE_TIME_MS);
 
         DhcpLease lease = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
         assertTrue(newPrefix.contains(lease.getNetAddr()));
     }
 
@@ -205,7 +206,7 @@
         requestLeaseSelecting(TEST_MAC_1, TEST_INETADDR_1, TEST_HOSTNAME_1);
 
         DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
         assertEquals(TEST_INETADDR_1, offer.getNetAddr());
         assertEquals(TEST_HOSTNAME_1, offer.getHostname());
     }
@@ -213,12 +214,13 @@
     @Test
     public void testGetOffer_ClientIdHasExistingLease() throws Exception {
         final byte[] clientId = new byte[] { 1, 2 };
-        mRepo.requestLease(clientId, TEST_MAC_1, INET4_ANY /* clientAddr */,
-                INET4_ANY /* relayAddr */, TEST_INETADDR_1 /* reqAddr */, false, TEST_HOSTNAME_1);
+        mRepo.requestLease(clientId, TEST_MAC_1, IPV4_ADDR_ANY /* clientAddr */,
+                IPV4_ADDR_ANY /* relayAddr */, TEST_INETADDR_1 /* reqAddr */, false,
+                TEST_HOSTNAME_1);
 
         // Different MAC, but same clientId
         DhcpLease offer = mRepo.getOffer(clientId, TEST_MAC_2,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
         assertEquals(TEST_INETADDR_1, offer.getNetAddr());
         assertEquals(TEST_HOSTNAME_1, offer.getHostname());
     }
@@ -227,12 +229,13 @@
     public void testGetOffer_DifferentClientId() throws Exception {
         final byte[] clientId1 = new byte[] { 1, 2 };
         final byte[] clientId2 = new byte[] { 3, 4 };
-        mRepo.requestLease(clientId1, TEST_MAC_1, INET4_ANY /* clientAddr */,
-                INET4_ANY /* relayAddr */, TEST_INETADDR_1 /* reqAddr */, false, TEST_HOSTNAME_1);
+        mRepo.requestLease(clientId1, TEST_MAC_1, IPV4_ADDR_ANY /* clientAddr */,
+                IPV4_ADDR_ANY /* relayAddr */, TEST_INETADDR_1 /* reqAddr */, false,
+                TEST_HOSTNAME_1);
 
         // Same MAC, different client ID
         DhcpLease offer = mRepo.getOffer(clientId2, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
         // Obtains a different address
         assertNotEquals(TEST_INETADDR_1, offer.getNetAddr());
         assertEquals(HOSTNAME_NONE, offer.getHostname());
@@ -241,7 +244,7 @@
 
     @Test
     public void testGetOffer_RequestedAddress() throws Exception {
-        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, INET4_ANY /* relayAddr */,
+        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, IPV4_ADDR_ANY /* relayAddr */,
                 TEST_INETADDR_1 /* reqAddr */, TEST_HOSTNAME_1);
         assertEquals(TEST_INETADDR_1, offer.getNetAddr());
         assertEquals(TEST_HOSTNAME_1, offer.getHostname());
@@ -250,14 +253,14 @@
     @Test
     public void testGetOffer_RequestedAddressInUse() throws Exception {
         requestLeaseSelecting(TEST_MAC_1, TEST_INETADDR_1);
-        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_2, INET4_ANY /* relayAddr */,
+        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_2, IPV4_ADDR_ANY /* relayAddr */,
                 TEST_INETADDR_1 /* reqAddr */, HOSTNAME_NONE);
         assertNotEquals(TEST_INETADDR_1, offer.getNetAddr());
     }
 
     @Test
     public void testGetOffer_RequestedAddressReserved() throws Exception {
-        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, INET4_ANY /* relayAddr */,
+        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, IPV4_ADDR_ANY /* relayAddr */,
                 TEST_RESERVED_ADDR /* reqAddr */, HOSTNAME_NONE);
         assertNotEquals(TEST_RESERVED_ADDR, offer.getNetAddr());
     }
@@ -265,7 +268,7 @@
     @Test
     public void testGetOffer_RequestedAddressInvalid() throws Exception {
         final Inet4Address invalidAddr = parseAddr4("192.168.42.0");
-        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, INET4_ANY /* relayAddr */,
+        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, IPV4_ADDR_ANY /* relayAddr */,
                 invalidAddr /* reqAddr */, HOSTNAME_NONE);
         assertNotEquals(invalidAddr, offer.getNetAddr());
     }
@@ -273,7 +276,7 @@
     @Test
     public void testGetOffer_RequestedAddressOutsideSubnet() throws Exception {
         final Inet4Address invalidAddr = parseAddr4("192.168.254.2");
-        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, INET4_ANY /* relayAddr */,
+        DhcpLease offer = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1, IPV4_ADDR_ANY /* relayAddr */,
                 invalidAddr /* reqAddr */, HOSTNAME_NONE);
         assertNotEquals(invalidAddr, offer.getNetAddr());
     }
@@ -322,7 +325,7 @@
 
     @Test(expected = DhcpLeaseRepository.InvalidSubnetException.class)
     public void testRequestLease_SelectingRelayInInvalidSubnet() throws  Exception {
-        mRepo.requestLease(CLIENTID_UNSPEC, TEST_MAC_1, INET4_ANY /* clientAddr */,
+        mRepo.requestLease(CLIENTID_UNSPEC, TEST_MAC_1, IPV4_ADDR_ANY /* clientAddr */,
                 parseAddr4("192.168.128.1") /* relayAddr */, TEST_INETADDR_1 /* reqAddr */,
                 true /* sidSet */, HOSTNAME_NONE);
     }
@@ -419,14 +422,14 @@
     public void testReleaseLease_StableOffer() throws Exception {
         for (MacAddress mac : new MacAddress[] { TEST_MAC_1, TEST_MAC_2, TEST_MAC_3 }) {
             final DhcpLease lease = mRepo.getOffer(CLIENTID_UNSPEC, mac,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
 
             requestLeaseSelecting(mac, lease.getNetAddr());
             mRepo.releaseLease(CLIENTID_UNSPEC, mac, lease.getNetAddr());
 
             // Same lease is offered after it was released
             final DhcpLease newLease = mRepo.getOffer(CLIENTID_UNSPEC, mac,
-                    INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                    IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
             assertEquals(lease.getNetAddr(), newLease.getNetAddr());
         }
     }
@@ -434,13 +437,13 @@
     @Test
     public void testMarkLeaseDeclined() throws Exception {
         final DhcpLease lease = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
 
         mRepo.markLeaseDeclined(lease.getNetAddr());
 
         // Same lease is not offered again
         final DhcpLease newLease = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
         assertNotEquals(lease.getNetAddr(), newLease.getNetAddr());
     }
 
@@ -457,16 +460,16 @@
 
         // Last 2 addresses: addresses marked declined should be used
         final DhcpLease firstLease = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_1,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, TEST_HOSTNAME_1);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, TEST_HOSTNAME_1);
         requestLeaseSelecting(TEST_MAC_1, firstLease.getNetAddr());
 
         final DhcpLease secondLease = mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_2,
-                INET4_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, TEST_HOSTNAME_2);
+                IPV4_ADDR_ANY /* relayAddr */, INETADDR_UNSPEC /* reqAddr */, TEST_HOSTNAME_2);
         requestLeaseSelecting(TEST_MAC_2, secondLease.getNetAddr());
 
         // Now out of addresses
         try {
-            mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_3, INET4_ANY /* relayAddr */,
+            mRepo.getOffer(CLIENTID_UNSPEC, TEST_MAC_3, IPV4_ADDR_ANY /* relayAddr */,
                     INETADDR_UNSPEC /* reqAddr */, HOSTNAME_NONE);
             fail("Repository should be out of addresses and throw");
         } catch (DhcpLeaseRepository.OutOfAddressesException e) { /* expected */ }
@@ -480,7 +483,8 @@
     private DhcpLease requestLease(@NonNull MacAddress macAddr, @NonNull Inet4Address clientAddr,
             @Nullable Inet4Address reqAddr, @Nullable String hostname, boolean sidSet)
             throws DhcpLeaseRepository.DhcpLeaseException {
-        return mRepo.requestLease(CLIENTID_UNSPEC, macAddr, clientAddr, INET4_ANY /* relayAddr */,
+        return mRepo.requestLease(CLIENTID_UNSPEC, macAddr, clientAddr,
+                IPV4_ADDR_ANY /* relayAddr */,
                 reqAddr, sidSet, hostname);
     }
 
@@ -490,7 +494,7 @@
     private DhcpLease requestLeaseSelecting(@NonNull MacAddress macAddr,
             @NonNull Inet4Address reqAddr, @Nullable String hostname)
             throws DhcpLeaseRepository.DhcpLeaseException {
-        return requestLease(macAddr, INET4_ANY /* clientAddr */, reqAddr, hostname,
+        return requestLease(macAddr, IPV4_ADDR_ANY /* clientAddr */, reqAddr, hostname,
                 true /* sidSet */);
     }
 
@@ -507,7 +511,7 @@
      */
     private DhcpLease requestLeaseInitReboot(@NonNull MacAddress macAddr,
             @NonNull Inet4Address reqAddr) throws DhcpLeaseRepository.DhcpLeaseException {
-        return requestLease(macAddr, INET4_ANY /* clientAddr */, reqAddr, HOSTNAME_NONE,
+        return requestLease(macAddr, IPV4_ADDR_ANY /* clientAddr */, reqAddr, HOSTNAME_NONE,
                 false /* sidSet */);
     }
 
diff --git a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
index a592809..7544e72 100644
--- a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
+++ b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
@@ -16,9 +16,27 @@
 
 package android.net.dhcp;
 
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-import static android.net.dhcp.DhcpPacket.*;
+import static android.net.dhcp.DhcpPacket.DHCP_BROADCAST_ADDRESS;
+import static android.net.dhcp.DhcpPacket.DHCP_DNS_SERVER;
+import static android.net.dhcp.DhcpPacket.DHCP_DOMAIN_NAME;
+import static android.net.dhcp.DhcpPacket.DHCP_LEASE_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_MESSAGE_TYPE_ACK;
+import static android.net.dhcp.DhcpPacket.DHCP_MESSAGE_TYPE_OFFER;
+import static android.net.dhcp.DhcpPacket.DHCP_MTU;
+import static android.net.dhcp.DhcpPacket.DHCP_REBINDING_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_RENEWAL_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_ROUTER;
+import static android.net.dhcp.DhcpPacket.DHCP_SUBNET_MASK;
+import static android.net.dhcp.DhcpPacket.DHCP_VENDOR_INFO;
+import static android.net.dhcp.DhcpPacket.ENCAP_BOOTP;
+import static android.net.dhcp.DhcpPacket.ENCAP_L2;
+import static android.net.dhcp.DhcpPacket.ENCAP_L3;
+import static android.net.dhcp.DhcpPacket.INADDR_ANY;
+import static android.net.dhcp.DhcpPacket.INFINITE_LEASE;
+import static android.net.dhcp.DhcpPacket.ParseException;
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
@@ -30,11 +48,15 @@
 import android.net.LinkAddress;
 import android.net.NetworkUtils;
 import android.net.metrics.DhcpErrorEvent;
-import android.support.test.runner.AndroidJUnit4;
 import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
 
 import com.android.internal.util.HexDump;
 
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.io.ByteArrayOutputStream;
 import java.net.Inet4Address;
 import java.nio.ByteBuffer;
@@ -44,10 +66,6 @@
 import java.util.Collections;
 import java.util.Random;
 
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class DhcpPacketTest {
@@ -60,9 +78,9 @@
             SERVER_ADDR, PREFIX_LENGTH);
     private static final String HOSTNAME = "testhostname";
     private static final short MTU = 1500;
-    // Use our own empty address instead of Inet4Address.ANY or INADDR_ANY to ensure that the code
+    // Use our own empty address instead of IPV4_ADDR_ANY or INADDR_ANY to ensure that the code
     // doesn't use == instead of equals when comparing addresses.
-    private static final Inet4Address ANY = (Inet4Address) v4Address("0.0.0.0");
+    private static final Inet4Address ANY = v4Address("0.0.0.0");
 
     private static final byte[] CLIENT_MAC = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
 
diff --git a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
index 3ca0564..1004382 100644
--- a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
+++ b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
@@ -17,8 +17,8 @@
 package android.net.dhcp;
 
 import static android.net.InetAddresses.parseNumericAddress;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
 import static android.net.dhcp.DhcpServingParams.MTU_UNSET;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
 
 import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertFalse;
@@ -27,8 +27,8 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.net.LinkAddress;
-import android.net.NetworkUtils;
 import android.net.dhcp.DhcpServingParams.InvalidParameterException;
+import android.net.shared.Inet4AddressUtils;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
@@ -200,7 +200,7 @@
     }
 
     private static int[] toIntArray(Collection<Inet4Address> addrs) {
-        return addrs.stream().mapToInt(NetworkUtils::inet4AddressToIntHTH).toArray();
+        return addrs.stream().mapToInt(Inet4AddressUtils::inet4AddressToIntHTH).toArray();
     }
 
     private static <T> void assertContains(@NonNull Set<T> set, @NonNull Set<T> subset) {
diff --git a/packages/NetworkStack/tests/src/android/net/ip/IpClientTest.java b/packages/NetworkStack/tests/src/android/net/ip/IpClientTest.java
index f21809f..7e57d1e 100644
--- a/packages/NetworkStack/tests/src/android/net/ip/IpClientTest.java
+++ b/packages/NetworkStack/tests/src/android/net/ip/IpClientTest.java
@@ -46,7 +46,6 @@
 import android.net.shared.InitialConfiguration;
 import android.net.shared.ProvisioningConfiguration;
 import android.net.util.InterfaceParams;
-import android.os.INetworkManagementService;
 import android.provider.Settings;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
@@ -54,7 +53,8 @@
 
 import com.android.internal.R;
 import com.android.internal.util.test.FakeSettingsProvider;
-import com.android.server.net.BaseNetworkObserver;
+import com.android.server.NetworkObserver;
+import com.android.server.NetworkObserverRegistry;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -87,15 +87,15 @@
 
     @Mock private Context mContext;
     @Mock private ConnectivityManager mCm;
-    @Mock private INetworkManagementService mNMService;
+    @Mock private NetworkObserverRegistry mObserverRegistry;
     @Mock private INetd mNetd;
     @Mock private Resources mResources;
     @Mock private IIpClientCallbacks mCb;
     @Mock private AlarmManager mAlarm;
-    @Mock private IpClient.Dependencies mDependecies;
+    @Mock private IpClient.Dependencies mDependencies;
     private MockContentResolver mContentResolver;
 
-    private BaseNetworkObserver mObserver;
+    private NetworkObserver mObserver;
     private InterfaceParams mIfParams;
 
     @Before
@@ -103,9 +103,8 @@
         MockitoAnnotations.initMocks(this);
 
         when(mContext.getSystemService(eq(Context.ALARM_SERVICE))).thenReturn(mAlarm);
-        when(mContext.getSystemServiceName(ConnectivityManager.class))
-                .thenReturn(Context.CONNECTIVITY_SERVICE);
-        when(mContext.getSystemService(Context.CONNECTIVITY_SERVICE)).thenReturn(mCm);
+        when(mContext.getSystemService(eq(ConnectivityManager.class))).thenReturn(mCm);
+        when(mContext.getSystemService(INetd.class)).thenReturn(mNetd);
         when(mContext.getResources()).thenReturn(mResources);
         when(mResources.getInteger(R.integer.config_networkAvoidBadWifi))
                 .thenReturn(DEFAULT_AVOIDBADWIFI_CONFIG_VALUE);
@@ -115,28 +114,24 @@
         when(mContext.getContentResolver()).thenReturn(mContentResolver);
 
         mIfParams = null;
-
-        when(mDependecies.getNMS()).thenReturn(mNMService);
-        when(mDependecies.getNetd()).thenReturn(mNetd);
     }
 
     private void setTestInterfaceParams(String ifname) {
         mIfParams = (ifname != null)
                 ? new InterfaceParams(ifname, TEST_IFINDEX, TEST_MAC)
                 : null;
-        when(mDependecies.getInterfaceParams(anyString())).thenReturn(mIfParams);
+        when(mDependencies.getInterfaceParams(anyString())).thenReturn(mIfParams);
     }
 
     private IpClient makeIpClient(String ifname) throws Exception {
         setTestInterfaceParams(ifname);
-        final IpClient ipc = new IpClient(mContext, ifname, mCb, mDependecies);
+        final IpClient ipc = new IpClient(mContext, ifname, mCb, mObserverRegistry, mDependencies);
         verify(mNetd, timeout(TEST_TIMEOUT_MS).times(1)).interfaceSetEnableIPv6(ifname, false);
         verify(mNetd, timeout(TEST_TIMEOUT_MS).times(1)).interfaceClearAddrs(ifname);
-        ArgumentCaptor<BaseNetworkObserver> arg =
-                ArgumentCaptor.forClass(BaseNetworkObserver.class);
-        verify(mNMService, times(1)).registerObserver(arg.capture());
+        ArgumentCaptor<NetworkObserver> arg = ArgumentCaptor.forClass(NetworkObserver.class);
+        verify(mObserverRegistry, times(1)).registerObserverForNonblockingCallback(arg.capture());
         mObserver = arg.getValue();
-        reset(mNMService);
+        reset(mObserverRegistry);
         reset(mNetd);
         // Verify IpClient doesn't call onLinkPropertiesChange() when it starts.
         verify(mCb, never()).onLinkPropertiesChange(any());
@@ -154,7 +149,8 @@
     public void testNullInterfaceNameMostDefinitelyThrows() throws Exception {
         setTestInterfaceParams(null);
         try {
-            final IpClient ipc = new IpClient(mContext, null, mCb, mDependecies);
+            final IpClient ipc = new IpClient(
+                    mContext, null, mCb, mObserverRegistry, mDependencies);
             ipc.shutdown();
             fail();
         } catch (NullPointerException npe) {
@@ -167,7 +163,8 @@
         final String ifname = "lo";
         setTestInterfaceParams(ifname);
         try {
-            final IpClient ipc = new IpClient(mContext, ifname, null, mDependecies);
+            final IpClient ipc = new IpClient(
+                    mContext, ifname, null, mObserverRegistry, mDependencies);
             ipc.shutdown();
             fail();
         } catch (NullPointerException npe) {
@@ -178,14 +175,16 @@
     @Test
     public void testInvalidInterfaceDoesNotThrow() throws Exception {
         setTestInterfaceParams(TEST_IFNAME);
-        final IpClient ipc = new IpClient(mContext, TEST_IFNAME, mCb, mDependecies);
+        final IpClient ipc = new IpClient(
+                mContext, TEST_IFNAME, mCb, mObserverRegistry, mDependencies);
         ipc.shutdown();
     }
 
     @Test
     public void testInterfaceNotFoundFailsImmediately() throws Exception {
         setTestInterfaceParams(null);
-        final IpClient ipc = new IpClient(mContext, TEST_IFNAME, mCb, mDependecies);
+        final IpClient ipc = new IpClient(
+                mContext, TEST_IFNAME, mCb, mObserverRegistry, mDependencies);
         ipc.startProvisioning(new ProvisioningConfiguration());
         verify(mCb, times(1)).onProvisioningFailure(any());
         ipc.shutdown();
@@ -249,13 +248,13 @@
 
         // Add N - 1 addresses
         for (int i = 0; i < lastAddr; i++) {
-            mObserver.addressUpdated(iface, new LinkAddress(addresses[i]));
+            mObserver.onInterfaceAddressUpdated(new LinkAddress(addresses[i]), iface);
             verify(mCb, timeout(TEST_TIMEOUT_MS)).onLinkPropertiesChange(any());
             reset(mCb);
         }
 
         // Add Nth address
-        mObserver.addressUpdated(iface, new LinkAddress(addresses[lastAddr]));
+        mObserver.onInterfaceAddressUpdated(new LinkAddress(addresses[lastAddr]), iface);
         LinkProperties want = linkproperties(links(addresses), routes(prefixes));
         want.setInterfaceName(iface);
         verify(mCb, timeout(TEST_TIMEOUT_MS).times(1)).onProvisioningSuccess(argThat(
diff --git a/packages/NetworkStack/tests/src/android/net/util/PacketReaderTest.java b/packages/NetworkStack/tests/src/android/net/util/PacketReaderTest.java
index dced743..6e11c40 100644
--- a/packages/NetworkStack/tests/src/android/net/util/PacketReaderTest.java
+++ b/packages/NetworkStack/tests/src/android/net/util/PacketReaderTest.java
@@ -17,7 +17,13 @@
 package android.net.util;
 
 import static android.net.util.PacketReader.DEFAULT_RECV_BUF_SIZE;
-import static android.system.OsConstants.*;
+import static android.system.OsConstants.AF_INET6;
+import static android.system.OsConstants.IPPROTO_UDP;
+import static android.system.OsConstants.SOCK_DGRAM;
+import static android.system.OsConstants.SOCK_NONBLOCK;
+import static android.system.OsConstants.SOL_SOCKET;
+import static android.system.OsConstants.SO_SNDTIMEO;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
@@ -31,10 +37,12 @@
 import android.system.Os;
 import android.system.StructTimeval;
 
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.io.FileDescriptor;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.UncheckedIOException;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.Inet6Address;
@@ -45,13 +53,6 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-import org.junit.runner.RunWith;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-
-import libcore.io.IoBridge;
-
 /**
  * Tests for PacketReader.
  *
@@ -80,7 +81,7 @@
         protected FileDescriptor createFd() {
             FileDescriptor s = null;
             try {
-                s = Os.socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
+                s = Os.socket(AF_INET6, SOCK_DGRAM | SOCK_NONBLOCK, IPPROTO_UDP);
                 Os.bind(s, LOOPBACK6, 0);
                 mLocalSockName = (InetSocketAddress) Os.getsockname(s);
                 Os.setsockoptTimeval(s, SOL_SOCKET, SO_SNDTIMEO, TIMEO);
diff --git a/packages/NetworkStack/tests/src/com/android/server/connectivity/NetworkMonitorTest.java b/packages/NetworkStack/tests/src/com/android/server/connectivity/NetworkMonitorTest.java
index d31fa77..d11bb64 100644
--- a/packages/NetworkStack/tests/src/com/android/server/connectivity/NetworkMonitorTest.java
+++ b/packages/NetworkStack/tests/src/com/android/server/connectivity/NetworkMonitorTest.java
@@ -21,7 +21,6 @@
 import static android.net.INetworkMonitor.NETWORK_TEST_RESULT_INVALID;
 import static android.net.INetworkMonitor.NETWORK_TEST_RESULT_VALID;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
-import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
 
 import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertFalse;
@@ -51,7 +50,6 @@
 import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.NetworkInfo;
-import android.net.NetworkRequest;
 import android.net.captiveportal.CaptivePortalProbeResult;
 import android.net.metrics.IpConnectivityLog;
 import android.net.util.SharedLog;
@@ -103,7 +101,6 @@
     private @Mock NetworkMonitor.Dependencies mDependencies;
     private @Mock INetworkMonitorCallbacks mCallbacks;
     private @Spy Network mNetwork = new Network(TEST_NETID);
-    private NetworkRequest mRequest;
 
     private static final int TEST_NETID = 4242;
 
@@ -178,10 +175,6 @@
                 InetAddresses.parseNumericAddress("192.168.0.0")
         }).when(mNetwork).getAllByName(any());
 
-        mRequest = new NetworkRequest.Builder()
-                .addCapability(NET_CAPABILITY_INTERNET)
-                .addCapability(NET_CAPABILITY_NOT_RESTRICTED)
-                .build();
         // Default values. Individual tests can override these.
         when(mCm.getLinkProperties(any())).thenReturn(TEST_LINKPROPERTIES);
         when(mCm.getNetworkCapabilities(any())).thenReturn(METERED_CAPABILITIES);
@@ -195,9 +188,9 @@
     private class WrappedNetworkMonitor extends NetworkMonitor {
         private long mProbeTime = 0;
 
-        WrappedNetworkMonitor(Context context, Network network, NetworkRequest defaultRequest,
-                IpConnectivityLog logger, Dependencies deps) {
-                super(context, mCallbacks, network, defaultRequest, logger,
+        WrappedNetworkMonitor(Context context, Network network, IpConnectivityLog logger,
+                Dependencies deps) {
+                super(context, mCallbacks, network, logger,
                         new SharedLog("test_nm"), deps);
         }
 
@@ -213,7 +206,7 @@
 
     private WrappedNetworkMonitor makeMeteredWrappedNetworkMonitor() {
         final WrappedNetworkMonitor nm = new WrappedNetworkMonitor(
-                mContext, mNetwork, mRequest, mLogger, mDependencies);
+                mContext, mNetwork, mLogger, mDependencies);
         when(mCm.getNetworkCapabilities(any())).thenReturn(METERED_CAPABILITIES);
         nm.start();
         waitForIdle(nm.getHandler());
@@ -222,7 +215,7 @@
 
     private WrappedNetworkMonitor makeNotMeteredWrappedNetworkMonitor() {
         final WrappedNetworkMonitor nm = new WrappedNetworkMonitor(
-                mContext, mNetwork, mRequest, mLogger, mDependencies);
+                mContext, mNetwork, mLogger, mDependencies);
         when(mCm.getNetworkCapabilities(any())).thenReturn(NOT_METERED_CAPABILITIES);
         nm.start();
         waitForIdle(nm.getHandler());
@@ -231,7 +224,7 @@
 
     private NetworkMonitor makeMonitor() {
         final NetworkMonitor nm = new NetworkMonitor(
-                mContext, mCallbacks, mNetwork, mRequest, mLogger, mValidationLogger,
+                mContext, mCallbacks, mNetwork, mLogger, mValidationLogger,
                 mDependencies);
         nm.start();
         waitForIdle(nm.getHandler());
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 8b32afb..c8e5d2b 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -40,6 +40,7 @@
 import static android.net.NetworkPolicyManager.uidRulesToString;
 import static android.net.NetworkStack.NETWORKSTACK_PACKAGE_NAME;
 import static android.net.shared.NetworkMonitorUtils.isValidationRequired;
+import static android.net.shared.NetworkParcelableUtil.toStableParcelable;
 import static android.os.Process.INVALID_UID;
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
@@ -98,10 +99,10 @@
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.NetworkEvent;
 import android.net.netlink.InetDiagMessage;
-import android.net.shared.NetdService;
 import android.net.shared.NetworkMonitorUtils;
 import android.net.shared.PrivateDnsConfig;
 import android.net.util.MultinetworkPolicyTracker;
+import android.net.util.NetdService;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Bundle;
@@ -515,7 +516,8 @@
 
     // A helper object to track the current default HTTP proxy. ConnectivityService needs to tell
     // the world when it changes.
-    private final ProxyTracker mProxyTracker;
+    @VisibleForTesting
+    protected final ProxyTracker mProxyTracker;
 
     final private SettingsObserver mSettingsObserver;
 
@@ -824,7 +826,7 @@
         mPolicyManagerInternal = checkNotNull(
                 LocalServices.getService(NetworkPolicyManagerInternal.class),
                 "missing NetworkPolicyManagerInternal");
-        mProxyTracker = new ProxyTracker(context, mHandler, EVENT_PROXY_HAS_CHANGED);
+        mProxyTracker = makeProxyTracker();
 
         mNetd = NetdService.getInstance();
         mKeyStore = KeyStore.getInstance();
@@ -990,6 +992,11 @@
                 deps);
     }
 
+    @VisibleForTesting
+    protected ProxyTracker makeProxyTracker() {
+        return new ProxyTracker(mContext, mHandler, EVENT_PROXY_HAS_CHANGED);
+    }
+
     private static NetworkCapabilities createDefaultNetworkCapabilitiesForUid(int uid) {
         final NetworkCapabilities netCap = new NetworkCapabilities();
         netCap.addCapability(NET_CAPABILITY_INTERNET);
@@ -1878,6 +1885,12 @@
                 "ConnectivityService");
     }
 
+    private void enforceControlAlwaysOnVpnPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.CONTROL_ALWAYS_ON_VPN,
+                "ConnectivityService");
+    }
+
     private void enforceNetworkStackSettingsOrSetup() {
         enforceAnyPermissionOf(
             android.Manifest.permission.NETWORK_SETTINGS,
@@ -1885,6 +1898,12 @@
             android.Manifest.permission.NETWORK_STACK);
     }
 
+    private void enforceNetworkStackPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.NETWORK_STACK,
+                "ConnectivityService");
+    }
+
     private boolean checkNetworkStackPermission() {
         return PERMISSION_GRANTED == mContext.checkCallingOrSelfPermission(
                 android.Manifest.permission.NETWORK_STACK);
@@ -3724,20 +3743,46 @@
         }
     }
 
+    /**
+     * Returns information about the proxy a certain network is using. If given a null network, it
+     * it will return the proxy for the bound network for the caller app or the default proxy if
+     * none.
+     *
+     * @param network the network we want to get the proxy information for.
+     * @return Proxy information if a network has a proxy configured, or otherwise null.
+     */
     @Override
     public ProxyInfo getProxyForNetwork(Network network) {
-        if (network == null) return mProxyTracker.getDefaultProxy();
         final ProxyInfo globalProxy = mProxyTracker.getGlobalProxy();
         if (globalProxy != null) return globalProxy;
-        if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null;
-        // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which
-        // caller may not have.
+        if (network == null) {
+            // Get the network associated with the calling UID.
+            final Network activeNetwork = getActiveNetworkForUidInternal(Binder.getCallingUid(),
+                    true);
+            if (activeNetwork == null) {
+                return null;
+            }
+            return getLinkPropertiesProxyInfo(activeNetwork);
+        } else if (queryUserAccess(Binder.getCallingUid(), network.netId)) {
+            // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which
+            // caller may not have.
+            return getLinkPropertiesProxyInfo(network);
+        }
+        // No proxy info available if the calling UID does not have network access.
+        return null;
+    }
+
+    @VisibleForTesting
+    protected boolean queryUserAccess(int uid, int netId) {
+        return NetworkUtils.queryUserAccess(uid, netId);
+    }
+
+    private ProxyInfo getLinkPropertiesProxyInfo(Network network) {
         final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
         if (nai == null) return null;
         synchronized (nai) {
-            final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy();
-            if (proxyInfo == null) return null;
-            return new ProxyInfo(proxyInfo);
+            final ProxyInfo linkHttpProxy = nai.linkProperties.getHttpProxy();
+            return linkHttpProxy == null ? null : new ProxyInfo(linkHttpProxy);
         }
     }
 
@@ -3761,11 +3806,10 @@
         mProxyTracker.setDefaultProxy(proxy);
     }
 
-    // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy.
-    // This method gets called when any network changes proxy, but the broadcast only ever contains
-    // the default proxy (even if it hasn't changed).
-    // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network
-    // world where an app might be bound to a non-default network.
+    // If the proxy has changed from oldLp to newLp, resend proxy broadcast. This method gets called
+    // when any network changes proxy.
+    // TODO: Remove usage of broadcast extras as they are deprecated and not applicable in a
+    // multi-network world where an app might be bound to a non-default network.
     private void updateProxy(LinkProperties newLp, LinkProperties oldLp) {
         ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy();
         ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy();
@@ -4116,8 +4160,9 @@
     }
 
     @Override
-    public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) {
-        enforceConnectivityInternalPermission();
+    public boolean setAlwaysOnVpnPackage(
+            int userId, String packageName, boolean lockdown, List<String> lockdownWhitelist) {
+        enforceControlAlwaysOnVpnPermission();
         enforceCrossUserPermission(userId);
 
         synchronized (mVpns) {
@@ -4131,11 +4176,11 @@
                 Slog.w(TAG, "User " + userId + " has no Vpn configuration");
                 return false;
             }
-            if (!vpn.setAlwaysOnPackage(packageName, lockdown)) {
+            if (!vpn.setAlwaysOnPackage(packageName, lockdown, lockdownWhitelist)) {
                 return false;
             }
             if (!startAlwaysOnVpn(userId)) {
-                vpn.setAlwaysOnPackage(null, false);
+                vpn.setAlwaysOnPackage(null, false, null);
                 return false;
             }
         }
@@ -4144,7 +4189,7 @@
 
     @Override
     public String getAlwaysOnVpnPackage(int userId) {
-        enforceConnectivityInternalPermission();
+        enforceControlAlwaysOnVpnPermission();
         enforceCrossUserPermission(userId);
 
         synchronized (mVpns) {
@@ -4158,6 +4203,36 @@
     }
 
     @Override
+    public boolean isVpnLockdownEnabled(int userId) {
+        enforceControlAlwaysOnVpnPermission();
+        enforceCrossUserPermission(userId);
+
+        synchronized (mVpns) {
+            Vpn vpn = mVpns.get(userId);
+            if (vpn == null) {
+                Slog.w(TAG, "User " + userId + " has no Vpn configuration");
+                return false;
+            }
+            return vpn.getLockdown();
+        }
+    }
+
+    @Override
+    public List<String> getVpnLockdownWhitelist(int userId) {
+        enforceControlAlwaysOnVpnPermission();
+        enforceCrossUserPermission(userId);
+
+        synchronized (mVpns) {
+            Vpn vpn = mVpns.get(userId);
+            if (vpn == null) {
+                Slog.w(TAG, "User " + userId + " has no Vpn configuration");
+                return null;
+            }
+            return vpn.getLockdownWhitelist();
+        }
+    }
+
+    @Override
     public int checkMobileProvisioning(int suggestedTimeOutMs) {
         // TODO: Remove?  Any reason to trigger a provisioning check?
         return -1;
@@ -4386,7 +4461,7 @@
             if (TextUtils.equals(vpn.getAlwaysOnPackage(), packageName) && !isReplacing) {
                 Slog.d(TAG, "Removing always-on VPN package " + packageName + " for user "
                         + userId);
-                vpn.setAlwaysOnPackage(null, false);
+                vpn.setAlwaysOnPackage(null, false, null);
             }
         }
     }
@@ -4938,8 +5013,8 @@
         if (DBG) log("registerNetworkAgent " + nai);
         final long token = Binder.clearCallingIdentity();
         try {
-            mContext.getSystemService(NetworkStack.class)
-                    .makeNetworkMonitor(nai.network, name, new NetworkMonitorCallbacks(nai));
+            mContext.getSystemService(NetworkStack.class).makeNetworkMonitor(
+                    toStableParcelable(nai.network), name, new NetworkMonitorCallbacks(nai));
         } finally {
             Binder.restoreCallingIdentity(token);
         }
@@ -5932,12 +6007,6 @@
             }
             scheduleUnvalidatedPrompt(networkAgent);
 
-            if (networkAgent.isVPN()) {
-                // Temporarily disable the default proxy (not global).
-                mProxyTracker.setDefaultProxyEnabled(false);
-                // TODO: support proxy per network.
-            }
-
             // Whether a particular NetworkRequest listen should cause signal strength thresholds to
             // be communicated to a particular NetworkAgent depends only on the network's immutable,
             // capabilities, so it only needs to be done once on initial connect, not every time the
@@ -5956,10 +6025,16 @@
         } else if (state == NetworkInfo.State.DISCONNECTED) {
             networkAgent.asyncChannel.disconnect();
             if (networkAgent.isVPN()) {
-                mProxyTracker.setDefaultProxyEnabled(true);
                 updateUids(networkAgent, networkAgent.networkCapabilities, null);
             }
             disconnectAndDestroyNetwork(networkAgent);
+            if (networkAgent.isVPN()) {
+                // As the active or bound network changes for apps, broadcast the default proxy, as
+                // apps may need to update their proxy data. This is called after disconnecting from
+                // VPN to make sure we do not broadcast the old proxy data.
+                // TODO(b/122649188): send the broadcast only to VPN users.
+                mProxyTracker.sendProxyBroadcast();
+            }
         } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) ||
                 state == NetworkInfo.State.SUSPENDED) {
             // going into or coming out of SUSPEND: re-score and notify
@@ -6266,7 +6341,7 @@
             synchronized (mVpns) {
                 final String alwaysOnPackage = getAlwaysOnVpnPackage(userId);
                 if (alwaysOnPackage != null) {
-                    setAlwaysOnVpnPackage(userId, null, false);
+                    setAlwaysOnVpnPackage(userId, null, false, null);
                     setVpnPackageAuthorization(alwaysOnPackage, userId, false);
                 }
 
diff --git a/services/core/java/com/android/server/IpSecService.java b/services/core/java/com/android/server/IpSecService.java
index 371276f..126bf65 100644
--- a/services/core/java/com/android/server/IpSecService.java
+++ b/services/core/java/com/android/server/IpSecService.java
@@ -44,7 +44,7 @@
 import android.net.Network;
 import android.net.NetworkUtils;
 import android.net.TrafficStats;
-import android.net.shared.NetdService;
+import android.net.util.NetdService;
 import android.os.Binder;
 import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
diff --git a/services/core/java/com/android/server/NetworkManagementService.java b/services/core/java/com/android/server/NetworkManagementService.java
index 7f61dd1..da4df22 100644
--- a/services/core/java/com/android/server/NetworkManagementService.java
+++ b/services/core/java/com/android/server/NetworkManagementService.java
@@ -46,11 +46,11 @@
 import android.app.ActivityManager;
 import android.content.Context;
 import android.net.ConnectivityManager;
-import android.net.InetAddresses;
 import android.net.INetd;
 import android.net.INetdUnsolicitedEventListener;
 import android.net.INetworkManagementEventObserver;
 import android.net.ITetheringStatsProvider;
+import android.net.InetAddresses;
 import android.net.InterfaceConfiguration;
 import android.net.InterfaceConfigurationParcel;
 import android.net.IpPrefix;
@@ -62,7 +62,7 @@
 import android.net.RouteInfo;
 import android.net.TetherStatsParcel;
 import android.net.UidRange;
-import android.net.shared.NetdService;
+import android.net.util.NetdService;
 import android.os.BatteryStats;
 import android.os.Binder;
 import android.os.Handler;
@@ -465,9 +465,12 @@
     /**
      * Notify our observers of a change in the data activity state of the interface
      */
-    private void notifyInterfaceClassActivity(int type, int powerState, long tsNanos,
+    private void notifyInterfaceClassActivity(int type, boolean isActive, long tsNanos,
             int uid, boolean fromRadio) {
         final boolean isMobile = ConnectivityManager.isNetworkTypeMobile(type);
+        int powerState = isActive
+                ? DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH
+                : DataConnectionRealTimeInfo.DC_POWER_STATE_LOW;
         if (isMobile) {
             if (!fromRadio) {
                 if (mMobileActivityFromRadio) {
@@ -498,9 +501,6 @@
             }
         }
 
-        boolean isActive = powerState == DataConnectionRealTimeInfo.DC_POWER_STATE_MEDIUM
-                || powerState == DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH;
-
         if (!isMobile || fromRadio || !mMobileActivityFromRadio) {
             // Report the change in data activity.  We don't do this if this is a change
             // on the mobile network, that is not coming from the radio itself, and we
@@ -734,10 +734,8 @@
             } else {
                 timestampNanos = timestamp;
             }
-            mDaemonHandler.post(() -> notifyInterfaceClassActivity(label,
-                    isActive ? DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH
-                    : DataConnectionRealTimeInfo.DC_POWER_STATE_LOW,
-                    timestampNanos, uid, false));
+            mDaemonHandler.post(() ->
+                    notifyInterfaceClassActivity(label, isActive, timestampNanos, uid, false));
         }
 
         @Override
@@ -904,9 +902,7 @@
                     }
                     boolean isActive = cooked[2].equals("active");
                     notifyInterfaceClassActivity(Integer.parseInt(cooked[3]),
-                            isActive ? DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH
-                            : DataConnectionRealTimeInfo.DC_POWER_STATE_LOW,
-                            timestampNanos, processUid, false);
+                            isActive, timestampNanos, processUid, false);
                     return true;
                     // break;
             case NetdResponseCode.InterfaceAddressChange:
@@ -1456,8 +1452,7 @@
             if (ConnectivityManager.isNetworkTypeMobile(type)) {
                 mNetworkActive = false;
             }
-            mDaemonHandler.post(() -> notifyInterfaceClassActivity(type,
-                    DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH,
+            mDaemonHandler.post(() -> notifyInterfaceClassActivity(type, true,
                     SystemClock.elapsedRealtimeNanos(), -1, false));
         }
     }
@@ -1481,8 +1476,7 @@
                 throw new IllegalStateException(e);
             }
             mActiveIdleTimers.remove(iface);
-            mDaemonHandler.post(() -> notifyInterfaceClassActivity(params.type,
-                    DataConnectionRealTimeInfo.DC_POWER_STATE_LOW,
+            mDaemonHandler.post(() -> notifyInterfaceClassActivity(params.type, false,
                     SystemClock.elapsedRealtimeNanos(), -1, false));
         }
     }
diff --git a/services/core/java/com/android/server/TelephonyRegistry.java b/services/core/java/com/android/server/TelephonyRegistry.java
index 1798f38..cbfcd60 100644
--- a/services/core/java/com/android/server/TelephonyRegistry.java
+++ b/services/core/java/com/android/server/TelephonyRegistry.java
@@ -206,9 +206,10 @@
 
     private Map<Integer, List<EmergencyNumber>> mEmergencyNumberList;
 
-    private CallQuality mCallQuality;
+    private CallQuality mCallQuality = new CallQuality();
 
-    private CallAttributes mCallAttributes;
+    private CallAttributes mCallAttributes = new CallAttributes(new PreciseCallState(),
+            TelephonyManager.NETWORK_TYPE_UNKNOWN, new CallQuality());
 
     private int[] mSrvccState;
 
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index f59f188..8e80c74 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -2240,17 +2240,6 @@
                 }
             } break;
             case UPDATE_HTTP_PROXY_MSG: {
-                ProxyInfo proxy = (ProxyInfo)msg.obj;
-                String host = "";
-                String port = "";
-                String exclList = "";
-                Uri pacFileUrl = Uri.EMPTY;
-                if (proxy != null) {
-                    host = proxy.getHost();
-                    port = Integer.toString(proxy.getPort());
-                    exclList = proxy.getExclusionListAsString();
-                    pacFileUrl = proxy.getPacFileUrl();
-                }
                 synchronized (ActivityManagerService.this) {
                     for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                         ProcessRecord r = mLruProcesses.get(i);
@@ -2258,7 +2247,7 @@
                         // ConnectivityManager and don't have network privileges anyway.
                         if (r.thread != null && !r.isolated) {
                             try {
-                                r.thread.setHttpProxy(host, port, exclList, pacFileUrl);
+                                r.thread.updateHttpProxy();
                             } catch (RemoteException ex) {
                                 Slog.w(TAG, "Failed to update http proxy for: " +
                                         r.info.processName);
@@ -21457,8 +21446,7 @@
                     mHandler.sendEmptyMessage(CLEAR_DNS_CACHE_MSG);
                     break;
                 case Proxy.PROXY_CHANGE_ACTION:
-                    ProxyInfo proxy = intent.getParcelableExtra(Proxy.EXTRA_PROXY_INFO);
-                    mHandler.sendMessage(mHandler.obtainMessage(UPDATE_HTTP_PROXY_MSG, proxy));
+                    mHandler.sendMessage(mHandler.obtainMessage(UPDATE_HTTP_PROXY_MSG));
                     break;
                 case android.hardware.Camera.ACTION_NEW_PICTURE:
                 case android.hardware.Camera.ACTION_NEW_VIDEO:
diff --git a/services/core/java/com/android/server/connectivity/ProxyTracker.java b/services/core/java/com/android/server/connectivity/ProxyTracker.java
index fdddccd..a671287 100644
--- a/services/core/java/com/android/server/connectivity/ProxyTracker.java
+++ b/services/core/java/com/android/server/connectivity/ProxyTracker.java
@@ -309,22 +309,4 @@
             }
         }
     }
-
-    /**
-     * Enable or disable the default proxy.
-     *
-     * This sets the flag for enabling/disabling the default proxy and sends the broadcast
-     * if applicable.
-     * @param enabled whether the default proxy should be enabled.
-     */
-    public void setDefaultProxyEnabled(final boolean enabled) {
-        synchronized (mProxyLock) {
-            if (mDefaultProxyEnabled != enabled) {
-                mDefaultProxyEnabled = enabled;
-                if (mGlobalProxy == null && mDefaultProxy != null) {
-                    sendProxyBroadcast();
-                }
-            }
-        }
-    }
 }
diff --git a/services/core/java/com/android/server/connectivity/Vpn.java b/services/core/java/com/android/server/connectivity/Vpn.java
index c72c9dd..2508844 100644
--- a/services/core/java/com/android/server/connectivity/Vpn.java
+++ b/services/core/java/com/android/server/connectivity/Vpn.java
@@ -151,7 +151,7 @@
                 .divide(BigInteger.valueOf(100));
     }
     // How many routes to evaluate before bailing and declaring this Vpn should provide
-    // the INTERNET capability. This is necessary because computing the adress space is
+    // the INTERNET capability. This is necessary because computing the address space is
     // O(n²) and this is running in the system service, so a limit is needed to alleviate
     // the risk of attack.
     // This is taken as a total of IPv4 + IPV6 routes for simplicity, but the algorithm
@@ -194,6 +194,12 @@
     private boolean mLockdown = false;
 
     /**
+     * Set of packages in addition to the VPN app itself that can access the network directly when
+     * VPN is not connected even if {@code mLockdown} is set.
+     */
+    private @NonNull List<String> mLockdownWhitelist = Collections.emptyList();
+
+    /**
      * List of UIDs for which networking should be blocked until VPN is ready, during brief periods
      * when VPN is not running. For example, during system startup or after a crash.
      * @see mLockdown
@@ -320,9 +326,9 @@
      *
      * Used to enable/disable legacy VPN lockdown.
      *
-     * This uses the same ip rule mechanism as {@link #setAlwaysOnPackage(String, boolean)};
-     * previous settings from calling that function will be replaced and saved with the
-     * always-on state.
+     * This uses the same ip rule mechanism as
+     * {@link #setAlwaysOnPackage(String, boolean, List<String>)}; previous settings from calling
+     * that function will be replaced and saved with the always-on state.
      *
      * @param lockdown whether to prevent all traffic outside of a VPN.
      */
@@ -419,12 +425,14 @@
      *
      * @param packageName the package to designate as always-on VPN supplier.
      * @param lockdown whether to prevent traffic outside of a VPN, for example while connecting.
+     * @param lockdownWhitelist packages to be whitelisted from lockdown.
      * @return {@code true} if the package has been set as always-on, {@code false} otherwise.
      */
-    public synchronized boolean setAlwaysOnPackage(String packageName, boolean lockdown) {
+    public synchronized boolean setAlwaysOnPackage(
+            String packageName, boolean lockdown, List<String> lockdownWhitelist) {
         enforceControlPermissionOrInternalCaller();
 
-        if (setAlwaysOnPackageInternal(packageName, lockdown)) {
+        if (setAlwaysOnPackageInternal(packageName, lockdown, lockdownWhitelist)) {
             saveAlwaysOnPackage();
             return true;
         }
@@ -439,15 +447,27 @@
      *
      * @param packageName the package to designate as always-on VPN supplier.
      * @param lockdown whether to prevent traffic outside of a VPN, for example while connecting.
+     * @param lockdownWhitelist packages to be whitelisted from lockdown. This is only used if
+     *        {@code lockdown} is {@code true}. Packages must not contain commas.
      * @return {@code true} if the package has been set as always-on, {@code false} otherwise.
      */
     @GuardedBy("this")
-    private boolean setAlwaysOnPackageInternal(String packageName, boolean lockdown) {
+    private boolean setAlwaysOnPackageInternal(
+            String packageName, boolean lockdown, List<String> lockdownWhitelist) {
         if (VpnConfig.LEGACY_VPN.equals(packageName)) {
             Log.w(TAG, "Not setting legacy VPN \"" + packageName + "\" as always-on.");
             return false;
         }
 
+        if (lockdownWhitelist != null) {
+            for (String pkg : lockdownWhitelist) {
+                if (pkg.contains(",")) {
+                    Log.w(TAG, "Not setting always-on vpn, invalid whitelisted package: " + pkg);
+                    return false;
+                }
+            }
+        }
+
         if (packageName != null) {
             // Pre-authorize new always-on VPN package.
             if (!setPackageAuthorization(packageName, true)) {
@@ -460,13 +480,18 @@
         }
 
         mLockdown = (mAlwaysOn && lockdown);
+        mLockdownWhitelist = (mLockdown && lockdownWhitelist != null)
+                ? Collections.unmodifiableList(new ArrayList<>(lockdownWhitelist))
+                : Collections.emptyList();
+
         if (isCurrentPreparedPackage(packageName)) {
             updateAlwaysOnNotification(mNetworkInfo.getDetailedState());
+            setVpnForcedLocked(mLockdown);
         } else {
             // Prepare this app. The notification will update as a side-effect of updateState().
+            // It also calls setVpnForcedLocked().
             prepareInternal(packageName);
         }
-        setVpnForcedLocked(mLockdown);
         return true;
     }
 
@@ -478,7 +503,6 @@
      * @return the package name of the VPN controller responsible for always-on VPN,
      *         or {@code null} if none is set or always-on VPN is controlled through
      *         lockdown instead.
-     * @hide
      */
     public synchronized String getAlwaysOnPackage() {
         enforceControlPermissionOrInternalCaller();
@@ -486,6 +510,13 @@
     }
 
     /**
+     * @return an immutable list of packages whitelisted from always-on VPN lockdown.
+     */
+    public synchronized List<String> getLockdownWhitelist() {
+        return mLockdown ? mLockdownWhitelist : null;
+    }
+
+    /**
      * Save the always-on package and lockdown config into Settings.Secure
      */
     @GuardedBy("this")
@@ -496,6 +527,9 @@
                     getAlwaysOnPackage(), mUserHandle);
             mSystemServices.settingsSecurePutIntForUser(Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN,
                     (mAlwaysOn && mLockdown ? 1 : 0), mUserHandle);
+            mSystemServices.settingsSecurePutStringForUser(
+                    Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST,
+                    String.join(",", mLockdownWhitelist), mUserHandle);
         } finally {
             Binder.restoreCallingIdentity(token);
         }
@@ -512,7 +546,11 @@
                     Settings.Secure.ALWAYS_ON_VPN_APP, mUserHandle);
             final boolean alwaysOnLockdown = mSystemServices.settingsSecureGetIntForUser(
                     Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, 0 /*default*/, mUserHandle) != 0;
-            setAlwaysOnPackageInternal(alwaysOnPackage, alwaysOnLockdown);
+            final String whitelistString = mSystemServices.settingsSecureGetStringForUser(
+                    Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST, mUserHandle);
+            final List<String> whitelistedPackages = TextUtils.isEmpty(whitelistString)
+                    ? Collections.emptyList() : Arrays.asList(whitelistString.split(","));
+            setAlwaysOnPackageInternal(alwaysOnPackage, alwaysOnLockdown, whitelistedPackages);
         } finally {
             Binder.restoreCallingIdentity(token);
         }
@@ -532,7 +570,7 @@
             }
             // Remove always-on VPN if it's not supported.
             if (!isAlwaysOnPackageSupported(alwaysOnPackage)) {
-                setAlwaysOnPackage(null, false);
+                setAlwaysOnPackage(null, false, null);
                 return false;
             }
             // Skip if the service is already established. This isn't bulletproof: it's not bound
@@ -793,6 +831,8 @@
             }
         }
 
+        lp.setHttpProxy(mConfig.proxyInfo);
+
         if (!allowIPv4) {
             lp.addRoute(new RouteInfo(new IpPrefix(Inet4Address.ANY, 0), RTN_UNREACHABLE));
         }
@@ -1247,9 +1287,10 @@
     }
 
     /**
-     * Restrict network access from all UIDs affected by this {@link Vpn}, apart from the VPN
-     * service app itself, to only sockets that have had {@code protect()} called on them. All
-     * non-VPN traffic is blocked via a {@code PROHIBIT} response from the kernel.
+     * Restricts network access from all UIDs affected by this {@link Vpn}, apart from the VPN
+     * service app itself and whitelisted packages, to only sockets that have had {@code protect()}
+     * called on them. All non-VPN traffic is blocked via a {@code PROHIBIT} response from the
+     * kernel.
      *
      * The exception for the VPN UID isn't technically necessary -- setup should use protected
      * sockets -- but in practice it saves apps that don't protect their sockets from breaking.
@@ -1265,8 +1306,13 @@
      */
     @GuardedBy("this")
     private void setVpnForcedLocked(boolean enforce) {
-        final List<String> exemptedPackages =
-                isNullOrLegacyVpn(mPackage) ? null : Collections.singletonList(mPackage);
+        final List<String> exemptedPackages;
+        if (isNullOrLegacyVpn(mPackage)) {
+            exemptedPackages = null;
+        } else {
+            exemptedPackages = new ArrayList<>(mLockdownWhitelist);
+            exemptedPackages.add(mPackage);
+        }
         final Set<UidRange> removedRanges = new ArraySet<>(mBlockedUsers);
 
         Set<UidRange> addedRanges = Collections.emptySet();
diff --git a/services/core/java/com/android/server/job/JobSchedulerService.java b/services/core/java/com/android/server/job/JobSchedulerService.java
index 0b7c5b9..64641b3 100644
--- a/services/core/java/com/android/server/job/JobSchedulerService.java
+++ b/services/core/java/com/android/server/job/JobSchedulerService.java
@@ -1596,6 +1596,7 @@
                         }
                     } break;
                     case MSG_CHECK_JOB:
+                        removeMessages(MSG_CHECK_JOB);
                         if (mReportedActive) {
                             // if jobs are currently being run, queue all ready jobs for execution.
                             queueReadyJobsForExecutionLocked();
@@ -1652,7 +1653,6 @@
                 }
                 maybeRunPendingJobsLocked();
                 // Don't remove JOB_EXPIRED in case one came along while processing the queue.
-                removeMessages(MSG_CHECK_JOB);
             }
         }
     }
diff --git a/services/core/java/com/android/server/location/OWNERS b/services/core/java/com/android/server/location/OWNERS
index 92b4d5f..c2c95e6 100644
--- a/services/core/java/com/android/server/location/OWNERS
+++ b/services/core/java/com/android/server/location/OWNERS
@@ -1,6 +1,8 @@
+aadmal@google.com
 arthuri@google.com
 bduddie@google.com
 gomo@google.com
 sooniln@google.com
 weiwa@google.com
 wyattriley@google.com
+yuhany@google.com
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index bf872b7..8948977 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -450,8 +450,7 @@
     private static final boolean ENABLE_FREE_CACHE_V2 =
             SystemProperties.getBoolean("fw.free_cache_v2", true);
 
-    private static final boolean PRECOMPILED_LAYOUT_ENABLED =
-            SystemProperties.getBoolean("view.precompiled_layout_enabled", false);
+    private static final String PRECOMPILE_LAYOUTS = "pm.precompile_layouts";
 
     private static final int RADIO_UID = Process.PHONE_UID;
     private static final int LOG_UID = Process.LOG_UID;
@@ -9180,7 +9179,7 @@
                 pkgCompilationReason = PackageManagerService.REASON_BACKGROUND_DEXOPT;
             }
 
-            if (PRECOMPILED_LAYOUT_ENABLED) {
+            if (SystemProperties.getBoolean(PRECOMPILE_LAYOUTS, false)) {
                 mArtManagerService.compileLayouts(pkg);
             }
 
@@ -17747,7 +17746,7 @@
 
         if (performDexopt) {
             // Compile the layout resources.
-            if (PRECOMPILED_LAYOUT_ENABLED) {
+            if (SystemProperties.getBoolean(PRECOMPILE_LAYOUTS, false)) {
                 Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "compileLayouts");
                 mArtManagerService.compileLayouts(pkg);
                 Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
diff --git a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
index 9ca02ba..a6242e1 100644
--- a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
+++ b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
@@ -16,10 +16,6 @@
 
 package com.android.server.pm;
 
-import com.google.android.collect.Sets;
-
-import com.android.internal.util.Preconditions;
-
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.ActivityManager;
@@ -42,6 +38,10 @@
 import android.util.Slog;
 import android.util.SparseArray;
 
+import com.android.internal.util.Preconditions;
+
+import com.google.android.collect.Sets;
+
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlSerializer;
 
@@ -660,6 +660,7 @@
 
             case android.provider.Settings.Secure.ALWAYS_ON_VPN_APP:
             case android.provider.Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN:
+            case android.provider.Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST:
                 // Whitelist system uid (ConnectivityService) and root uid to change always-on vpn
                 final int appId = UserHandle.getAppId(callingUid);
                 if (appId == Process.SYSTEM_UID || appId == Process.ROOT_UID) {
diff --git a/services/core/java/com/android/server/pm/dex/ArtManagerService.java b/services/core/java/com/android/server/pm/dex/ArtManagerService.java
index 863bfd5..a8be07d 100644
--- a/services/core/java/com/android/server/pm/dex/ArtManagerService.java
+++ b/services/core/java/com/android/server/pm/dex/ArtManagerService.java
@@ -480,6 +480,10 @@
             final String apkPath = pkg.baseCodePath;
             final ApplicationInfo appInfo = pkg.applicationInfo;
             final String outDexFile = appInfo.dataDir + "/code_cache/compiled_view.dex";
+            if (appInfo.isPrivilegedApp()) {
+                // Privileged apps prefer to load trusted code so they don't use compiled views.
+                return false;
+            }
             Log.i("PackageManager", "Compiling layouts in " + packageName + " (" + apkPath +
                     ") to " + outDexFile);
             long callingId = Binder.clearCallingIdentity();
diff --git a/services/core/jni/com_android_server_lights_LightsService.cpp b/services/core/jni/com_android_server_lights_LightsService.cpp
index c90113f..26f6d74 100644
--- a/services/core/jni/com_android_server_lights_LightsService.cpp
+++ b/services/core/jni/com_android_server_lights_LightsService.cpp
@@ -39,37 +39,7 @@
 template<typename T>
 using Return     = ::android::hardware::Return<T>;
 
-class LightHal {
-private:
-    static sp<ILight> sLight;
-    static bool sLightInit;
-
-    LightHal() {}
-
-public:
-    static void disassociate() {
-        sLightInit = false;
-        sLight = nullptr;
-    }
-
-    static sp<ILight> associate() {
-        if ((sLight == nullptr && !sLightInit) ||
-                (sLight != nullptr && !sLight->ping().isOk())) {
-            // will return the hal if it exists the first time.
-            sLight = ILight::getService();
-            sLightInit = true;
-
-            if (sLight == nullptr) {
-                ALOGE("Unable to get ILight interface.");
-            }
-        }
-
-        return sLight;
-    }
-};
-
-sp<ILight> LightHal::sLight = nullptr;
-bool LightHal::sLightInit = false;
+static bool sLightSupported = true;
 
 static bool validate(jint light, jint flash, jint brightness) {
     bool valid = true;
@@ -134,7 +104,6 @@
         const LightState &state) {
     if (!ret.isOk()) {
         ALOGE("Failed to issue set light command.");
-        LightHal::disassociate();
         return;
     }
 
@@ -164,13 +133,11 @@
         jint offMS,
         jint brightnessMode) {
 
-    if (!validate(light, flashMode, brightnessMode)) {
+    if (!sLightSupported) {
         return;
     }
 
-    sp<ILight> hal = LightHal::associate();
-
-    if (hal == nullptr) {
+    if (!validate(light, flashMode, brightnessMode)) {
         return;
     }
 
@@ -180,6 +147,11 @@
 
     {
         android::base::Timer t;
+        sp<ILight> hal = ILight::getService();
+        if (hal == nullptr) {
+            sLightSupported = false;
+            return;
+        }
         Return<Status> ret = hal->setLight(type, state);
         processReturn(ret, type, state);
         if (t.duration() > 50ms) ALOGD("Excessive delay setting light");
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 8f5d36a..31e1e35 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -1852,7 +1852,11 @@
         }
 
         AlarmManager getAlarmManager() {
-            return (AlarmManager) mContext.getSystemService(AlarmManager.class);
+            return mContext.getSystemService(AlarmManager.class);
+        }
+
+        ConnectivityManager getConnectivityManager() {
+            return mContext.getSystemService(ConnectivityManager.class);
         }
 
         IWindowManager getIWindowManager() {
@@ -5881,7 +5885,8 @@
      * @throws UnsupportedOperationException if the package does not support being set as always-on.
      */
     @Override
-    public boolean setAlwaysOnVpnPackage(ComponentName admin, String vpnPackage, boolean lockdown)
+    public boolean setAlwaysOnVpnPackage(ComponentName admin, String vpnPackage, boolean lockdown,
+            List<String> lockdownWhitelist)
             throws SecurityException {
         enforceProfileOrDeviceOwner(admin);
 
@@ -5889,11 +5894,23 @@
         final long token = mInjector.binderClearCallingIdentity();
         try {
             if (vpnPackage != null && !isPackageInstalledForUser(vpnPackage, userId)) {
-                return false;
+                Slog.w(LOG_TAG, "Non-existent VPN package specified: " + vpnPackage);
+                throw new ServiceSpecificException(
+                        DevicePolicyManager.ERROR_VPN_PACKAGE_NOT_FOUND, vpnPackage);
             }
-            ConnectivityManager connectivityManager = (ConnectivityManager)
-                    mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
-            if (!connectivityManager.setAlwaysOnVpnPackageForUser(userId, vpnPackage, lockdown)) {
+
+            if (vpnPackage != null && lockdown && lockdownWhitelist != null) {
+                for (String packageName : lockdownWhitelist) {
+                    if (!isPackageInstalledForUser(packageName, userId)) {
+                        Slog.w(LOG_TAG, "Non-existent package in VPN whitelist: " + packageName);
+                        throw new ServiceSpecificException(
+                                DevicePolicyManager.ERROR_VPN_PACKAGE_NOT_FOUND, packageName);
+                    }
+                }
+            }
+            // If some package is uninstalled after the check above, it will be ignored by CM.
+            if (!mInjector.getConnectivityManager().setAlwaysOnVpnPackageForUser(
+                    userId, vpnPackage, lockdown, lockdownWhitelist)) {
                 throw new UnsupportedOperationException();
             }
         } finally {
@@ -5903,16 +5920,40 @@
     }
 
     @Override
-    public String getAlwaysOnVpnPackage(ComponentName admin)
+    public String getAlwaysOnVpnPackage(ComponentName admin) throws SecurityException {
+        enforceProfileOrDeviceOwner(admin);
+
+        final int userId = mInjector.userHandleGetCallingUserId();
+        final long token = mInjector.binderClearCallingIdentity();
+        try {
+            return mInjector.getConnectivityManager().getAlwaysOnVpnPackageForUser(userId);
+        } finally {
+            mInjector.binderRestoreCallingIdentity(token);
+        }
+    }
+
+    @Override
+    public boolean isAlwaysOnVpnLockdownEnabled(ComponentName admin) throws SecurityException {
+        enforceProfileOrDeviceOwner(admin);
+
+        final int userId = mInjector.userHandleGetCallingUserId();
+        final long token = mInjector.binderClearCallingIdentity();
+        try {
+            return mInjector.getConnectivityManager().isVpnLockdownEnabled(userId);
+        } finally {
+            mInjector.binderRestoreCallingIdentity(token);
+        }
+    }
+
+    @Override
+    public List<String> getAlwaysOnVpnLockdownWhitelist(ComponentName admin)
             throws SecurityException {
         enforceProfileOrDeviceOwner(admin);
 
         final int userId = mInjector.userHandleGetCallingUserId();
         final long token = mInjector.binderClearCallingIdentity();
-        try{
-            ConnectivityManager connectivityManager = (ConnectivityManager)
-                    mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
-            return connectivityManager.getAlwaysOnVpnPackageForUser(userId);
+        try {
+            return mInjector.getConnectivityManager().getVpnLockdownWhitelist(userId);
         } finally {
             mInjector.binderRestoreCallingIdentity(token);
         }
@@ -6382,9 +6423,7 @@
         }
         long token = mInjector.binderClearCallingIdentity();
         try {
-            ConnectivityManager connectivityManager = (ConnectivityManager)
-                    mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
-            connectivityManager.setGlobalProxy(proxyInfo);
+            mInjector.getConnectivityManager().setGlobalProxy(proxyInfo);
         } finally {
             mInjector.binderRestoreCallingIdentity(token);
         }
diff --git a/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java b/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
index e99dd4f..bbecc63 100644
--- a/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
+++ b/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
@@ -16,6 +16,9 @@
 
 package com.android.server.net.ipmemorystore;
 
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.ContentValues;
@@ -27,7 +30,6 @@
 import android.database.sqlite.SQLiteException;
 import android.database.sqlite.SQLiteOpenHelper;
 import android.database.sqlite.SQLiteQuery;
-import android.net.NetworkUtils;
 import android.net.ipmemorystore.NetworkAttributes;
 import android.net.ipmemorystore.Status;
 import android.util.Log;
@@ -200,7 +202,7 @@
         if (null == attributes) return values;
         if (null != attributes.assignedV4Address) {
             values.put(NetworkAttributesContract.COLNAME_ASSIGNEDV4ADDRESS,
-                    NetworkUtils.inet4AddressToIntHTH(attributes.assignedV4Address));
+                    inet4AddressToIntHTH(attributes.assignedV4Address));
         }
         if (null != attributes.groupHint) {
             values.put(NetworkAttributesContract.COLNAME_GROUPHINT, attributes.groupHint);
@@ -254,7 +256,7 @@
                 getBlob(cursor, NetworkAttributesContract.COLNAME_DNSADDRESSES);
         final int mtu = getInt(cursor, NetworkAttributesContract.COLNAME_MTU, -1);
         if (0 != assignedV4AddressInt) {
-            builder.setAssignedV4Address(NetworkUtils.intToInet4AddressHTH(assignedV4AddressInt));
+            builder.setAssignedV4Address(intToInet4AddressHTH(assignedV4AddressInt));
         }
         builder.setGroupHint(groupHint);
         if (null != dnsAddressesBlob) {
diff --git a/services/net/Android.bp b/services/net/Android.bp
index 30c7de5..638ec95 100644
--- a/services/net/Android.bp
+++ b/services/net/Android.bp
@@ -9,12 +9,6 @@
         "java/android/net/ip/InterfaceController.java", // TODO: move to NetworkStack with tethering
         "java/android/net/util/InterfaceParams.java", // TODO: move to NetworkStack with IpServer
         "java/android/net/shared/*.java",
-    ],
-}
-
-java_library {
-    name: "services-netlink-lib",
-    srcs: [
         "java/android/net/netlink/*.java",
-    ]
+    ],
 }
diff --git a/services/net/java/android/net/dhcp/DhcpClient.java b/services/net/java/android/net/dhcp/DhcpClient.java
deleted file mode 100644
index cddb91f..0000000
--- a/services/net/java/android/net/dhcp/DhcpClient.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.dhcp;
-
-/**
- * TODO: remove this class after migrating clients.
- */
-public class DhcpClient {
-    public static final int CMD_PRE_DHCP_ACTION = 1003;
-    public static final int CMD_POST_DHCP_ACTION = 1004;
-    public static final int CMD_PRE_DHCP_ACTION_COMPLETE = 1006;
-
-    public static final int DHCP_SUCCESS = 1;
-    public static final int DHCP_FAILURE = 2;
-}
diff --git a/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java b/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
index f068c3a..1fe2328 100644
--- a/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
+++ b/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
@@ -16,7 +16,7 @@
 
 package android.net.dhcp;
 
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
 
 import android.annotation.NonNull;
 import android.net.LinkAddress;
diff --git a/services/net/java/android/net/ip/InterfaceController.java b/services/net/java/android/net/ip/InterfaceController.java
index b3af67c..970bc9c 100644
--- a/services/net/java/android/net/ip/InterfaceController.java
+++ b/services/net/java/android/net/ip/InterfaceController.java
@@ -17,7 +17,6 @@
 package android.net.ip;
 
 import android.net.INetd;
-import android.net.InterfaceConfiguration;
 import android.net.InterfaceConfigurationParcel;
 import android.net.LinkAddress;
 import android.net.util.SharedLog;
@@ -49,14 +48,18 @@
         mLog = log;
     }
 
-    private boolean setInterfaceConfig(InterfaceConfiguration config) {
-        final InterfaceConfigurationParcel cfgParcel = config.toParcel(mIfName);
-
+    private boolean setInterfaceAddress(LinkAddress addr) {
+        final InterfaceConfigurationParcel ifConfig = new InterfaceConfigurationParcel();
+        ifConfig.ifName = mIfName;
+        ifConfig.ipv4Addr = addr.getAddress().getHostAddress();
+        ifConfig.prefixLength = addr.getPrefixLength();
+        ifConfig.hwAddr = "";
+        ifConfig.flags = new String[0];
         try {
-            mNetd.interfaceSetCfg(cfgParcel);
+            mNetd.interfaceSetCfg(ifConfig);
         } catch (RemoteException | ServiceSpecificException e) {
             logError("Setting IPv4 address to %s/%d failed: %s",
-                    cfgParcel.ipv4Addr, cfgParcel.prefixLength, e);
+                    ifConfig.ipv4Addr, ifConfig.prefixLength, e);
             return false;
         }
         return true;
@@ -69,18 +72,14 @@
         if (!(address.getAddress() instanceof Inet4Address)) {
             return false;
         }
-        final InterfaceConfiguration ifConfig = new InterfaceConfiguration();
-        ifConfig.setLinkAddress(address);
-        return setInterfaceConfig(ifConfig);
+        return setInterfaceAddress(address);
     }
 
     /**
      * Clear the IPv4Address of the interface.
      */
     public boolean clearIPv4Address() {
-        final InterfaceConfiguration ifConfig = new InterfaceConfiguration();
-        ifConfig.setLinkAddress(new LinkAddress("0.0.0.0/0"));
-        return setInterfaceConfig(ifConfig);
+        return setInterfaceAddress(new LinkAddress("0.0.0.0/0"));
     }
 
     private boolean setEnableIPv6(boolean enabled) {
diff --git a/services/net/java/android/net/ip/IpClient.java b/services/net/java/android/net/ip/IpClient.java
deleted file mode 100644
index a61c2ef..0000000
--- a/services/net/java/android/net/ip/IpClient.java
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.ip;
-
-import static android.net.shared.LinkPropertiesParcelableUtil.toStableParcelable;
-
-import android.content.Context;
-import android.net.LinkProperties;
-import android.net.Network;
-import android.net.ProxyInfo;
-import android.net.StaticIpConfiguration;
-import android.net.apf.ApfCapabilities;
-import android.os.ConditionVariable;
-import android.os.INetworkManagementService;
-import android.os.RemoteException;
-import android.util.Log;
-
-import java.io.FileDescriptor;
-import java.io.PrintWriter;
-
-/**
- * Proxy for the IpClient in the NetworkStack. To be removed once clients are migrated.
- * @hide
- */
-public class IpClient {
-    private static final String TAG = IpClient.class.getSimpleName();
-    private static final int IPCLIENT_BLOCK_TIMEOUT_MS = 10_000;
-
-    public static final String DUMP_ARG = "ipclient";
-
-    private final ConditionVariable mIpClientCv;
-    private final ConditionVariable mShutdownCv;
-
-    private volatile IIpClient mIpClient;
-
-    /**
-     * @see IpClientCallbacks
-     */
-    public static class Callback extends IpClientCallbacks {}
-
-    /**
-     * IpClient callback that allows clients to block until provisioning is complete.
-     */
-    public static class WaitForProvisioningCallback extends Callback {
-        private final ConditionVariable mCV = new ConditionVariable();
-        private LinkProperties mCallbackLinkProperties;
-
-        /**
-         * Block until either {@link #onProvisioningSuccess(LinkProperties)} or
-         * {@link #onProvisioningFailure(LinkProperties)} is called.
-         */
-        public LinkProperties waitForProvisioning() {
-            mCV.block();
-            return mCallbackLinkProperties;
-        }
-
-        @Override
-        public void onProvisioningSuccess(LinkProperties newLp) {
-            mCallbackLinkProperties = newLp;
-            mCV.open();
-        }
-
-        @Override
-        public void onProvisioningFailure(LinkProperties newLp) {
-            mCallbackLinkProperties = null;
-            mCV.open();
-        }
-    }
-
-    private class CallbackImpl extends IpClientUtil.IpClientCallbacksProxy {
-        /**
-         * Create a new IpClientCallbacksProxy.
-         */
-        CallbackImpl(IpClientCallbacks cb) {
-            super(cb);
-        }
-
-        @Override
-        public void onIpClientCreated(IIpClient ipClient) {
-            mIpClient = ipClient;
-            mIpClientCv.open();
-            super.onIpClientCreated(ipClient);
-        }
-
-        @Override
-        public void onQuit() {
-            mShutdownCv.open();
-            super.onQuit();
-        }
-    }
-
-    /**
-     * Create a new IpClient.
-     */
-    public IpClient(Context context, String iface, Callback callback) {
-        mIpClientCv = new ConditionVariable(false);
-        mShutdownCv = new ConditionVariable(false);
-
-        IpClientUtil.makeIpClient(context, iface, new CallbackImpl(callback));
-    }
-
-    /**
-     * @see IpClient#IpClient(Context, String, IpClient.Callback)
-     */
-    public IpClient(Context context, String iface, Callback callback,
-            INetworkManagementService nms) {
-        this(context, iface, callback);
-    }
-
-    private interface IpClientAction {
-        void useIpClient(IIpClient ipClient) throws RemoteException;
-    }
-
-    private void doWithIpClient(IpClientAction action) {
-        mIpClientCv.block(IPCLIENT_BLOCK_TIMEOUT_MS);
-        try {
-            action.useIpClient(mIpClient);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Error communicating with IpClient", e);
-        }
-    }
-
-    /**
-     * Notify IpClient that PreDhcpAction is completed.
-     */
-    public void completedPreDhcpAction() {
-        doWithIpClient(c -> c.completedPreDhcpAction());
-    }
-
-    /**
-     * Confirm the provisioning configuration.
-     */
-    public void confirmConfiguration() {
-        doWithIpClient(c -> c.confirmConfiguration());
-    }
-
-    /**
-     * Notify IpClient that packet filter read is complete.
-     */
-    public void readPacketFilterComplete(byte[] data) {
-        doWithIpClient(c -> c.readPacketFilterComplete(data));
-    }
-
-    /**
-     * Shutdown the IpClient altogether.
-     */
-    public void shutdown() {
-        doWithIpClient(c -> c.shutdown());
-    }
-
-    /**
-     * Start the IpClient provisioning.
-     */
-    public void startProvisioning(ProvisioningConfiguration config) {
-        doWithIpClient(c -> c.startProvisioning(config.toStableParcelable()));
-    }
-
-    /**
-     * Stop the IpClient.
-     */
-    public void stop() {
-        doWithIpClient(c -> c.stop());
-    }
-
-    /**
-     * Set the IpClient TCP buffer sizes.
-     */
-    public void setTcpBufferSizes(String tcpBufferSizes) {
-        doWithIpClient(c -> c.setTcpBufferSizes(tcpBufferSizes));
-    }
-
-    /**
-     * Set the IpClient HTTP proxy.
-     */
-    public void setHttpProxy(ProxyInfo proxyInfo) {
-        doWithIpClient(c -> c.setHttpProxy(toStableParcelable(proxyInfo)));
-    }
-
-    /**
-     * Set the IpClient multicast filter.
-     */
-    public void setMulticastFilter(boolean enabled) {
-        doWithIpClient(c -> c.setMulticastFilter(enabled));
-    }
-
-    /**
-     * Dump IpClient logs.
-     */
-    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
-        doWithIpClient(c -> IpClientUtil.dumpIpClient(c, fd, pw, args));
-    }
-
-    /**
-     * Block until IpClient shutdown.
-     */
-    public void awaitShutdown() {
-        mShutdownCv.block(IPCLIENT_BLOCK_TIMEOUT_MS);
-    }
-
-    /**
-     * Create a new ProvisioningConfiguration.
-     */
-    public static ProvisioningConfiguration.Builder buildProvisioningConfiguration() {
-        return new ProvisioningConfiguration.Builder();
-    }
-
-    /**
-     * TODO: remove after migrating clients to use the shared configuration class directly.
-     * @see android.net.shared.ProvisioningConfiguration
-     */
-    public static class ProvisioningConfiguration
-            extends android.net.shared.ProvisioningConfiguration {
-        public ProvisioningConfiguration(android.net.shared.ProvisioningConfiguration other) {
-            super(other);
-        }
-
-        /**
-         * @see android.net.shared.ProvisioningConfiguration.Builder
-         */
-        public static class Builder extends android.net.shared.ProvisioningConfiguration.Builder {
-            // Override all methods to have a return type matching this Builder
-            @Override
-            public Builder withoutIPv4() {
-                super.withoutIPv4();
-                return this;
-            }
-
-            @Override
-            public Builder withoutIPv6() {
-                super.withoutIPv6();
-                return this;
-            }
-
-            @Override
-            public Builder withoutMultinetworkPolicyTracker() {
-                super.withoutMultinetworkPolicyTracker();
-                return this;
-            }
-
-            @Override
-            public Builder withoutIpReachabilityMonitor() {
-                super.withoutIpReachabilityMonitor();
-                return this;
-            }
-
-            @Override
-            public Builder withPreDhcpAction() {
-                super.withPreDhcpAction();
-                return this;
-            }
-
-            @Override
-            public Builder withPreDhcpAction(int dhcpActionTimeoutMs) {
-                super.withPreDhcpAction(dhcpActionTimeoutMs);
-                return this;
-            }
-
-            @Override
-            public Builder withStaticConfiguration(StaticIpConfiguration staticConfig) {
-                super.withStaticConfiguration(staticConfig);
-                return this;
-            }
-
-            @Override
-            public Builder withApfCapabilities(ApfCapabilities apfCapabilities) {
-                super.withApfCapabilities(apfCapabilities);
-                return this;
-            }
-
-            @Override
-            public Builder withProvisioningTimeoutMs(int timeoutMs) {
-                super.withProvisioningTimeoutMs(timeoutMs);
-                return this;
-            }
-
-            @Override
-            public Builder withRandomMacAddress() {
-                super.withRandomMacAddress();
-                return this;
-            }
-
-            @Override
-            public Builder withStableMacAddress() {
-                super.withStableMacAddress();
-                return this;
-            }
-
-            @Override
-            public Builder withNetwork(Network network) {
-                super.withNetwork(network);
-                return this;
-            }
-
-            @Override
-            public Builder withDisplayName(String displayName) {
-                super.withDisplayName(displayName);
-                return this;
-            }
-
-            @Override
-            public ProvisioningConfiguration build() {
-                return new ProvisioningConfiguration(mConfig);
-            }
-        }
-    }
-}
diff --git a/services/net/java/android/net/ip/IpServer.java b/services/net/java/android/net/ip/IpServer.java
index f7360f5..7910c9a 100644
--- a/services/net/java/android/net/ip/IpServer.java
+++ b/services/net/java/android/net/ip/IpServer.java
@@ -40,7 +40,7 @@
 import android.net.ip.RouterAdvertisementDaemon.RaParams;
 import android.net.util.InterfaceParams;
 import android.net.util.InterfaceSet;
-import android.net.shared.NetdService;
+import android.net.util.NetdService;
 import android.net.util.SharedLog;
 import android.os.INetworkManagementService;
 import android.os.Looper;
diff --git a/services/net/java/android/net/netlink/NetlinkSocket.java b/services/net/java/android/net/netlink/NetlinkSocket.java
index 2a98d90..16f72bd 100644
--- a/services/net/java/android/net/netlink/NetlinkSocket.java
+++ b/services/net/java/android/net/netlink/NetlinkSocket.java
@@ -27,14 +27,13 @@
 import static android.system.OsConstants.SO_RCVTIMEO;
 import static android.system.OsConstants.SO_SNDTIMEO;
 
+import android.net.util.SocketUtils;
 import android.system.ErrnoException;
 import android.system.Os;
-import android.system.StructTimeval;
 import android.util.Log;
 
-import libcore.io.IoUtils;
-
 import java.io.FileDescriptor;
+import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.net.SocketException;
 import java.nio.ByteBuffer;
@@ -95,7 +94,11 @@
             Log.e(TAG, errPrefix, e);
             throw new ErrnoException(errPrefix, EIO, e);
         } finally {
-            IoUtils.closeQuietly(fd);
+            try {
+                SocketUtils.closeSocket(fd);
+            } catch (IOException e) {
+                // Nothing we can do here
+            }
         }
     }
 
@@ -106,7 +109,7 @@
     }
 
     public static void connectToKernel(FileDescriptor fd) throws ErrnoException, SocketException {
-        Os.connect(fd, makeNetlinkSocketAddress(0, 0));
+        SocketUtils.connectSocket(fd, makeNetlinkSocketAddress(0, 0));
     }
 
     private static void checkTimeout(long timeoutMs) {
@@ -125,7 +128,7 @@
             throws ErrnoException, IllegalArgumentException, InterruptedIOException {
         checkTimeout(timeoutMs);
 
-        Os.setsockoptTimeval(fd, SOL_SOCKET, SO_RCVTIMEO, StructTimeval.fromMillis(timeoutMs));
+        SocketUtils.setSocketTimeValueOption(fd, SOL_SOCKET, SO_RCVTIMEO, timeoutMs);
 
         ByteBuffer byteBuffer = ByteBuffer.allocate(bufsize);
         int length = Os.read(fd, byteBuffer);
@@ -148,7 +151,7 @@
             FileDescriptor fd, byte[] bytes, int offset, int count, long timeoutMs)
             throws ErrnoException, IllegalArgumentException, InterruptedIOException {
         checkTimeout(timeoutMs);
-        Os.setsockoptTimeval(fd, SOL_SOCKET, SO_SNDTIMEO, StructTimeval.fromMillis(timeoutMs));
+        SocketUtils.setSocketTimeValueOption(fd, SOL_SOCKET, SO_SNDTIMEO, timeoutMs);
         return Os.write(fd, bytes, offset, count);
     }
 }
diff --git a/services/net/java/android/net/shared/InitialConfiguration.java b/services/net/java/android/net/shared/InitialConfiguration.java
index bc2373f..4ad7138 100644
--- a/services/net/java/android/net/shared/InitialConfiguration.java
+++ b/services/net/java/android/net/shared/InitialConfiguration.java
@@ -20,6 +20,7 @@
 import static android.net.shared.ParcelableUtil.toParcelableArray;
 import static android.text.TextUtils.join;
 
+import android.net.InetAddresses;
 import android.net.InitialConfigurationParcelable;
 import android.net.IpPrefix;
 import android.net.IpPrefixParcelable;
@@ -27,7 +28,7 @@
 import android.net.LinkAddressParcelable;
 import android.net.RouteInfo;
 
-import java.net.Inet6Address;
+import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.util.HashSet;
 import java.util.List;
@@ -43,6 +44,8 @@
     private static final int RFC6177_MIN_PREFIX_LENGTH = 48;
     private static final int RFC7421_PREFIX_LENGTH = 64;
 
+    public static final InetAddress INET6_ANY = InetAddresses.parseNumericAddress("::");
+
     /**
      * Create a InitialConfiguration that is a copy of the specified configuration.
      */
@@ -102,7 +105,7 @@
             return false;
         }
         // There no more than one IPv4 address
-        if (ipAddresses.stream().filter(LinkAddress::isIPv4).count() > 1) {
+        if (ipAddresses.stream().filter(InitialConfiguration::isIPv4).count() > 1) {
             return false;
         }
 
@@ -184,11 +187,11 @@
     }
 
     private static boolean isPrefixLengthCompliant(LinkAddress addr) {
-        return addr.isIPv4() || isCompliantIPv6PrefixLength(addr.getPrefixLength());
+        return isIPv4(addr) || isCompliantIPv6PrefixLength(addr.getPrefixLength());
     }
 
     private static boolean isPrefixLengthCompliant(IpPrefix prefix) {
-        return prefix.isIPv4() || isCompliantIPv6PrefixLength(prefix.getPrefixLength());
+        return isIPv4(prefix) || isCompliantIPv6PrefixLength(prefix.getPrefixLength());
     }
 
     private static boolean isCompliantIPv6PrefixLength(int prefixLength) {
@@ -196,8 +199,16 @@
                 && (prefixLength <= RFC7421_PREFIX_LENGTH);
     }
 
+    private static boolean isIPv4(IpPrefix prefix) {
+        return prefix.getAddress() instanceof Inet4Address;
+    }
+
+    private static boolean isIPv4(LinkAddress addr) {
+        return addr.getAddress() instanceof Inet4Address;
+    }
+
     private static boolean isIPv6DefaultRoute(IpPrefix prefix) {
-        return prefix.getAddress().equals(Inet6Address.ANY);
+        return prefix.getAddress().equals(INET6_ANY);
     }
 
     private static boolean isIPv6GUA(LinkAddress addr) {
diff --git a/services/net/java/android/net/shared/IpConfigurationParcelableUtil.java b/services/net/java/android/net/shared/IpConfigurationParcelableUtil.java
index 2c368c8..1f0525e 100644
--- a/services/net/java/android/net/shared/IpConfigurationParcelableUtil.java
+++ b/services/net/java/android/net/shared/IpConfigurationParcelableUtil.java
@@ -44,11 +44,11 @@
             @Nullable StaticIpConfiguration config) {
         if (config == null) return null;
         final StaticIpConfigurationParcelable p = new StaticIpConfigurationParcelable();
-        p.ipAddress = LinkPropertiesParcelableUtil.toStableParcelable(config.ipAddress);
-        p.gateway = parcelAddress(config.gateway);
+        p.ipAddress = LinkPropertiesParcelableUtil.toStableParcelable(config.getIpAddress());
+        p.gateway = parcelAddress(config.getGateway());
         p.dnsServers = toParcelableArray(
-                config.dnsServers, IpConfigurationParcelableUtil::parcelAddress, String.class);
-        p.domains = config.domains;
+                config.getDnsServers(), IpConfigurationParcelableUtil::parcelAddress, String.class);
+        p.domains = config.getDomains();
         return p;
     }
 
@@ -59,11 +59,13 @@
             @Nullable StaticIpConfigurationParcelable p) {
         if (p == null) return null;
         final StaticIpConfiguration config = new StaticIpConfiguration();
-        config.ipAddress = LinkPropertiesParcelableUtil.fromStableParcelable(p.ipAddress);
-        config.gateway = unparcelAddress(p.gateway);
-        config.dnsServers.addAll(fromParcelableArray(
-                p.dnsServers, IpConfigurationParcelableUtil::unparcelAddress));
-        config.domains = p.domains;
+        config.setIpAddress(LinkPropertiesParcelableUtil.fromStableParcelable(p.ipAddress));
+        config.setGateway(unparcelAddress(p.gateway));
+        for (InetAddress addr : fromParcelableArray(
+                p.dnsServers, IpConfigurationParcelableUtil::unparcelAddress)) {
+            config.addDnsServer(addr);
+        }
+        config.setDomains(p.domains);
         return config;
     }
 
@@ -73,7 +75,7 @@
     public static DhcpResultsParcelable toStableParcelable(@Nullable DhcpResults results) {
         if (results == null) return null;
         final DhcpResultsParcelable p = new DhcpResultsParcelable();
-        p.baseConfiguration = toStableParcelable((StaticIpConfiguration) results);
+        p.baseConfiguration = toStableParcelable(results.toStaticIpConfiguration());
         p.leaseDuration = results.leaseDuration;
         p.mtu = results.mtu;
         p.serverAddress = parcelAddress(results.serverAddress);
diff --git a/services/net/java/android/net/shared/NetdService.java b/services/net/java/android/net/util/NetdService.java
similarity index 96%
rename from services/net/java/android/net/shared/NetdService.java
rename to services/net/java/android/net/util/NetdService.java
index be0f5f2..d4cd5bd 100644
--- a/services/net/java/android/net/shared/NetdService.java
+++ b/services/net/java/android/net/util/NetdService.java
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-package android.net.shared;
+package android.net.util;
 
+import android.content.Context;
 import android.net.INetd;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -28,7 +29,6 @@
  */
 public class NetdService {
     private static final String TAG = NetdService.class.getSimpleName();
-    private static final String NETD_SERVICE_NAME = "netd";
     private static final long BASE_TIMEOUT_MS = 100;
     private static final long MAX_TIMEOUT_MS = 1000;
 
@@ -48,7 +48,7 @@
         // NOTE: ServiceManager does no caching for the netd service,
         // because netd is not one of the defined common services.
         final INetd netdInstance = INetd.Stub.asInterface(
-                ServiceManager.getService(NETD_SERVICE_NAME));
+                ServiceManager.getService(Context.NETD_SERVICE));
         if (netdInstance == null) {
             Log.w(TAG, "WARNING: returning null INetd instance.");
         }
diff --git a/startop/view_compiler/Android.bp b/startop/view_compiler/Android.bp
index 7dc83c3..f5b4308 100644
--- a/startop/view_compiler/Android.bp
+++ b/startop/view_compiler/Android.bp
@@ -16,12 +16,12 @@
 
 cc_defaults {
     name: "viewcompiler_defaults",
+    defaults: ["libdexfile_static_defaults"],
     header_libs: [
         "libbase_headers",
     ],
     shared_libs: [
         "libbase",
-        "libdexfile",
         "libz",
         "slicer",
     ],
diff --git a/telecomm/java/android/telecom/VideoProfile.java b/telecomm/java/android/telecom/VideoProfile.java
index 7b23061..157f12c 100644
--- a/telecomm/java/android/telecom/VideoProfile.java
+++ b/telecomm/java/android/telecom/VideoProfile.java
@@ -16,7 +16,9 @@
 
 package android.telecom;
 
+import android.annotation.FloatRange;
 import android.annotation.IntDef;
+import android.annotation.IntRange;
 import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -364,7 +366,7 @@
          * @param width The width of the camera video (in pixels).
          * @param height The height of the camera video (in pixels).
          */
-        public CameraCapabilities(int width, int height) {
+        public CameraCapabilities(@IntRange(from = 0) int width, @IntRange(from = 0) int height) {
             this(width, height, false, 1.0f);
         }
 
@@ -376,7 +378,8 @@
          * @param zoomSupported True when camera supports zoom.
          * @param maxZoom Maximum zoom supported by camera.
          */
-        public CameraCapabilities(int width, int height, boolean zoomSupported, float maxZoom) {
+        public CameraCapabilities(@IntRange(from = 0) int width,  @IntRange(from = 0) int height,
+                                   boolean zoomSupported,  @FloatRange(from = 1.0f) float maxZoom) {
             mWidth = width;
             mHeight = height;
             mZoomSupported = zoomSupported;
diff --git a/telephony/java/android/telephony/CallAttributes.java b/telephony/java/android/telephony/CallAttributes.java
index 2b99ce1..2d29875 100644
--- a/telephony/java/android/telephony/CallAttributes.java
+++ b/telephony/java/android/telephony/CallAttributes.java
@@ -50,10 +50,10 @@
     }
 
     private CallAttributes(Parcel in) {
-        mPreciseCallState = (PreciseCallState) in.readValue(mPreciseCallState.getClass()
-                .getClassLoader());
+        mPreciseCallState = (PreciseCallState)
+                in.readValue(PreciseCallState.class.getClassLoader());
         mNetworkType = in.readInt();
-        mCallQuality = (CallQuality) in.readValue(mCallQuality.getClass().getClassLoader());
+        mCallQuality = (CallQuality) in.readValue(CallQuality.class.getClassLoader());
     }
 
     // getters
diff --git a/telephony/java/android/telephony/CallQuality.java b/telephony/java/android/telephony/CallQuality.java
index b27f6b4..cbe62284 100644
--- a/telephony/java/android/telephony/CallQuality.java
+++ b/telephony/java/android/telephony/CallQuality.java
@@ -92,6 +92,10 @@
         mCodecType = in.readInt();
     }
 
+    /** @hide **/
+    public CallQuality() {
+    }
+
     /**
      * Constructor.
      *
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index eb010bc..190e82b 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -608,11 +608,41 @@
     public static final String KEY_CARRIER_PROMOTE_WFC_ON_CALL_FAIL_BOOL =
             "carrier_promote_wfc_on_call_fail_bool";
 
-    /** Flag specifying whether provisioning is required for VOLTE. */
+    /**
+     * Flag specifying whether provisioning is required for VoLTE, Video Telephony, and WiFi
+     * Calling.
+     */
     public static final String KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL
             = "carrier_volte_provisioning_required_bool";
 
     /**
+     * Flag indicating whether or not the IMS MmTel UT capability requires carrier provisioning
+     * before it can be set as enabled.
+     *
+     * If true, the UT capability will be set to false for the newly loaded subscription
+     * and will require the carrier provisioning app to set the persistent provisioning result.
+     * If false, the platform will not wait for provisioning status updates for the UT capability
+     * and enable the UT over IMS capability for the subscription when the subscription is loaded.
+     *
+     * The default value for this key is {@code false}.
+     */
+    public static final String KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL =
+            "carrier_ut_provisioning_required_bool";
+
+    /**
+     * Flag indicating whether or not the carrier supports Supplementary Services over the UT
+     * interface for this subscription.
+     *
+     * If true, the device will use Supplementary Services over UT when provisioned (see
+     * {@link #KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL}). If false, this device will fallback to
+     * circuit switch for supplementary services and will disable this capability for IMS entirely.
+     *
+     * The default value for this key is {@code true}.
+     */
+    public static final String KEY_CARRIER_SUPPORTS_SS_OVER_UT_BOOL =
+            "carrier_supports_ss_over_ut_bool";
+
+    /**
      * Flag specifying if WFC provisioning depends on VoLTE provisioning.
      *
      * {@code false}: default value; honor actual WFC provisioning state.
@@ -2341,33 +2371,54 @@
             "support_emergency_dialer_shortcut_bool";
 
     /**
-     * Controls RSRP threshold at which AlternativeNetworkService will decide whether
+     * Controls RSRP threshold at which OpportunisticNetworkService will decide whether
      * the opportunistic network is good enough for internet data.
      */
     public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSRP_INT =
             "opportunistic_network_entry_threshold_rsrp_int";
 
     /**
-     * Controls RSSNR threshold at which AlternativeNetworkService will decide whether
+     * Controls RSSNR threshold at which OpportunisticNetworkService will decide whether
      * the opportunistic network is good enough for internet data.
      */
     public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSSNR_INT =
             "opportunistic_network_entry_threshold_rssnr_int";
 
     /**
-     * Controls RSRP threshold below which AlternativeNetworkService will decide whether
+     * Controls RSRP threshold below which OpportunisticNetworkService will decide whether
      * the opportunistic network available is not good enough for internet data.
      */
     public static final String KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSRP_INT =
             "opportunistic_network_exit_threshold_rsrp_int";
 
     /**
-     * Controls RSSNR threshold below which AlternativeNetworkService will decide whether
+     * Controls RSSNR threshold below which OpportunisticNetworkService will decide whether
      * the opportunistic network available is not good enough for internet data.
      */
     public static final String KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSSNR_INT =
             "opportunistic_network_exit_threshold_rssnr_int";
 
+    /**
+     * Controls bandwidth threshold in Kbps at which OpportunisticNetworkService will decide whether
+     * the opportunistic network is good enough for internet data.
+     */
+    public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_BANDWIDTH_INT =
+            "opportunistic_network_entry_threshold_bandwidth_int";
+
+    /**
+     * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
+     * will wait before attaching to a network.
+     */
+    public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG =
+            "opportunistic_network_entry_or_exit_hysteresis_time_long";
+
+    /**
+     * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
+     * will wait before switching data to a network.
+     */
+    public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG =
+            "opportunistic_network_data_switch_hysteresis_time_long";
+
     /** The default value for every variable. */
     private final static PersistableBundle sDefaults;
 
@@ -2405,6 +2456,8 @@
         sDefaults.putInt(KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT, 2);
         sDefaults.putBoolean(KEY_CARRIER_FORCE_DISABLE_ETWS_CMAS_TEST_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL, false);
+        sDefaults.putBoolean(KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL, false);
+        sDefaults.putBoolean(KEY_CARRIER_SUPPORTS_SS_OVER_UT_BOOL, true);
         sDefaults.putBoolean(KEY_CARRIER_VOLTE_OVERRIDE_WFC_PROVISIONING_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL, true);
         sDefaults.putBoolean(KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL, true);
@@ -2735,6 +2788,12 @@
         sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSSNR_INT, 45);
         /* Default value is minimum RSSNR level needed for SIGNAL_STRENGTH_MODERATE */
         sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSSNR_INT, 10);
+        /* Default value is 1024 kbps */
+        sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_BANDWIDTH_INT, 1024);
+        /* Default value is 10 seconds */
+        sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG, 10000);
+        /* Default value is 10 seconds. */
+        sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG, 10000);
     }
 
     /**
diff --git a/telephony/java/android/telephony/PhoneStateListener.java b/telephony/java/android/telephony/PhoneStateListener.java
index 9fee593..af324de 100644
--- a/telephony/java/android/telephony/PhoneStateListener.java
+++ b/telephony/java/android/telephony/PhoneStateListener.java
@@ -701,7 +701,7 @@
      * @hide
      */
     @SystemApi
-    public void onCallAttributesChanged(CallAttributes callAttributes) {
+    public void onCallAttributesChanged(@NonNull CallAttributes callAttributes) {
         // default implementation empty
     }
 
diff --git a/telephony/java/android/telephony/ServiceState.java b/telephony/java/android/telephony/ServiceState.java
index c89496e..3317876 100644
--- a/telephony/java/android/telephony/ServiceState.java
+++ b/telephony/java/android/telephony/ServiceState.java
@@ -27,6 +27,7 @@
 import android.os.Parcelable;
 import android.telephony.AccessNetworkConstants.AccessNetworkType;
 import android.telephony.NetworkRegistrationState.Domain;
+import android.telephony.NetworkRegistrationState.NRStatus;
 import android.text.TextUtils;
 
 import java.lang.annotation.Retention;
@@ -539,7 +540,7 @@
      *
      * @hide
      */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
+    @UnsupportedAppUsage
     public int getDataRegState() {
         return mDataRegState;
     }
@@ -1359,6 +1360,18 @@
     }
 
     /**
+     * Get the NR 5G status of the mobile data network.
+     * @return the NR 5G status.
+     * @hide
+     */
+    public @NRStatus int getNrStatus() {
+        final NetworkRegistrationState regState = getNetworkRegistrationState(
+                NetworkRegistrationState.DOMAIN_PS, AccessNetworkConstants.TransportType.WWAN);
+        if (regState == null) return NetworkRegistrationState.NR_STATUS_NONE;
+        return regState.getNrStatus();
+    }
+
+    /**
      * @param nrFrequencyRange the frequency range of 5G NR.
      * @hide
      */
@@ -1534,7 +1547,6 @@
         }
     }
 
-
     /** @hide */
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
     public @TelephonyManager.NetworkType int getDataNetworkType() {
@@ -1619,8 +1631,9 @@
 
     /** @hide */
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
-    public static boolean bearerBitmapHasCdma(int radioTechnologyBitmap) {
-        return (RIL_RADIO_CDMA_TECHNOLOGY_BITMASK & radioTechnologyBitmap) != 0;
+    public static boolean bearerBitmapHasCdma(int networkTypeBitmask) {
+        return (RIL_RADIO_CDMA_TECHNOLOGY_BITMASK
+                & convertNetworkTypeBitmaskToBearerBitmask(networkTypeBitmask)) != 0;
     }
 
     /** @hide */
diff --git a/telephony/java/android/telephony/SubscriptionInfo.java b/telephony/java/android/telephony/SubscriptionInfo.java
index 4e4ef4d..443f908 100644
--- a/telephony/java/android/telephony/SubscriptionInfo.java
+++ b/telephony/java/android/telephony/SubscriptionInfo.java
@@ -577,10 +577,10 @@
     }
 
     /**
-     * @return the cardId of the SIM card which contains the subscription.
-     * @hide
+     * Returns the card ID of the SIM card which contains the subscription (see
+     * {@link UiccCardInfo#getCardId()}.
+     * @return the cardId
      */
-    @SystemApi
     public int getCardId() {
         return this.mCardId;
     }
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index b9ffd4d..5c86efb 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -93,6 +93,7 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.Executor;
 import java.util.regex.Matcher;
@@ -226,10 +227,9 @@
     public static final int SRVCC_STATE_HANDOVER_CANCELED  = 3;
 
     /**
-     * An invalid card identifier.
-     * @hide
+     * An invalid UICC card identifier. See {@link #getCardIdForDefaultEuicc()} and
+     * {@link UiccCardInfo#getCardId()}.
      */
-    @SystemApi
     public static final int INVALID_CARD_ID = -1;
 
     /** @hide */
@@ -3117,14 +3117,8 @@
      * unique to a device, and always refer to the same UICC or eUICC card unless the device goes
      * through a factory reset.
      *
-     * <p>Requires Permission: {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
-     *
      * @return card ID of the default eUICC card.
-     * @hide
      */
-    @SystemApi
-    @SuppressAutoDoc // Blocked by b/72967236 - no support for carrier privileges
-    @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
     public int getCardIdForDefaultEuicc() {
         try {
             ITelephony telephony = getITelephony();
@@ -3138,25 +3132,37 @@
     }
 
     /**
-     * Gets information about currently inserted UICCs and eUICCs. See {@link UiccCardInfo} for more
-     * details on the kind of information available.
+     * Gets information about currently inserted UICCs and enabled eUICCs.
+     * <p>
+     * Requires that the calling app has carrier privileges (see {@link #hasCarrierPrivileges}).
+     * <p>
+     * If the caller has carrier priviliges on any active subscription, then they have permission to
+     * get simple information like the card ID ({@link UiccCardInfo#getCardId()}), whether the card
+     * is an eUICC ({@link UiccCardInfo#isEuicc()}), and the slot index where the card is inserted
+     * ({@link UiccCardInfo#getSlotIndex()}).
+     * <p>
+     * To get private information such as the EID ({@link UiccCardInfo#getEid()}) or ICCID
+     * ({@link UiccCardInfo#getIccId()}), the caller must have carrier priviliges on that specific
+     * UICC or eUICC card.
+     * <p>
+     * See {@link UiccCardInfo} for more details on the kind of information available.
      *
-     * @return UiccCardInfo an array of UiccCardInfo objects, representing information on the
-     * currently inserted UICCs and eUICCs.
-     *
-     * @hide
+     * @return a list of UiccCardInfo objects, representing information on the currently inserted
+     * UICCs and eUICCs. Each UiccCardInfo in the list will have private information filtered out if
+     * the caller does not have adequate permissions for that card.
      */
-    @SystemApi
     @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
-    public UiccCardInfo[] getUiccCardsInfo() {
+    public List<UiccCardInfo> getUiccCardsInfo() {
         try {
             ITelephony telephony = getITelephony();
             if (telephony == null) {
-                return null;
+                Log.e(TAG, "Error in getUiccCardsInfo: unable to connect to Telephony service.");
+                return new ArrayList<UiccCardInfo>();
             }
-            return telephony.getUiccCardsInfo();
+            return telephony.getUiccCardsInfo(mContext.getOpPackageName());
         } catch (RemoteException e) {
-            return null;
+            Log.e(TAG, "Error in getUiccCardsInfo: " + e);
+            return new ArrayList<UiccCardInfo>();
         }
     }
 
@@ -8440,12 +8446,25 @@
     }
 
 
-    /** @hide */
-    public String getLocaleFromDefaultSim() {
+    /**
+     * Returns a well-formed IETF BCP 47 language tag representing the locale from the SIM, e.g,
+     * en-US. Returns {@code null} if no locale could be derived from subscriptions.
+     *
+     * <p>Requires Permission:
+     * {@link android.Manifest.permission#READ_PRIVILEGED_PHONE_STATE READ_PRIVILEGED_PHONE_STATE}
+     *
+     * @see Locale#toLanguageTag()
+     * @see Locale#forLanguageTag(String)
+     *
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+    @Nullable public String getSimLocale() {
         try {
             final ITelephony telephony = getITelephony();
             if (telephony != null) {
-                return telephony.getLocaleFromDefaultSim();
+                return telephony.getSimLocaleForSubscriber(getSubId());
             }
         } catch (RemoteException ex) {
         }
@@ -8453,6 +8472,22 @@
     }
 
     /**
+     * TODO delete after SuW migrates to new API.
+     * @hide
+     */
+    public String getLocaleFromDefaultSim() {
+        try {
+            final ITelephony telephony = getITelephony();
+            if (telephony != null) {
+                return telephony.getSimLocaleForSubscriber(getSubId());
+            }
+        } catch (RemoteException ex) {
+        }
+        return null;
+    }
+
+
+    /**
      * Requests the modem activity info. The recipient will place the result
      * in `result`.
      * @param result The object on which the recipient will send the resulting
@@ -8919,6 +8954,9 @@
     @SystemApi
     @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
     public int setAllowedCarriers(int slotIndex, List<CarrierIdentifier> carriers) {
+        if (carriers == null || !SubscriptionManager.isValidPhoneId(slotIndex)) {
+            return -1;
+        }
         // Execute the method setCarrierRestrictionRules with an empty excluded list and
         // indicating priority for the allowed list.
         CarrierRestrictionRules carrierRestrictionRules = CarrierRestrictionRules.newBuilder()
@@ -8929,7 +8967,7 @@
 
         int result = setCarrierRestrictionRules(carrierRestrictionRules);
 
-        // Convert boolean result into int, as required by this method.
+        // Convert result into int, as required by this method.
         if (result == SET_CARRIER_RESTRICTION_SUCCESS) {
             return carriers.size();
         } else {
@@ -9022,9 +9060,11 @@
     @SystemApi
     @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public List<CarrierIdentifier> getAllowedCarriers(int slotIndex) {
-        CarrierRestrictionRules carrierRestrictionRule = getCarrierRestrictionRules();
-        if (carrierRestrictionRule != null) {
-            return carrierRestrictionRule.getAllowedCarriers();
+        if (SubscriptionManager.isValidPhoneId(slotIndex)) {
+            CarrierRestrictionRules carrierRestrictionRule = getCarrierRestrictionRules();
+            if (carrierRestrictionRule != null) {
+                return carrierRestrictionRule.getAllowedCarriers();
+            }
         }
         return new ArrayList<CarrierIdentifier>(0);
     }
@@ -9941,4 +9981,52 @@
         }
         return ret;
     }
+
+    /**
+     * Indicate if the user is allowed to use multiple SIM cards at the same time to register
+     * on the network (e.g. Dual Standby or Dual Active) when the device supports it, or if the
+     * usage is restricted. This API is used to prevent usage of multiple SIM card, based on
+     * policies of the carrier.
+     * <p>Note: the API does not prevent access to the SIM cards for operations that don't require
+     * access to the network.
+     *
+     * @param isMultisimCarrierRestricted true if usage of multiple SIMs is restricted, false
+     * otherwise.
+     *
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
+    public void setMultisimCarrierRestriction(boolean isMultisimCarrierRestricted) {
+        try {
+            ITelephony service = getITelephony();
+            if (service != null) {
+                service.setMultisimCarrierRestriction(isMultisimCarrierRestricted);
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "setMultisimCarrierRestriction RemoteException", e);
+        }
+    }
+
+    /**
+     * Returns if the usage of multiple SIM cards at the same time to register on the network
+     * (e.g. Dual Standby or Dual Active) is restricted.
+     *
+     * @return true if usage of multiple SIMs is restricted, false otherwise.
+     *
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+    public boolean isMultisimCarrierRestricted() {
+        try {
+            ITelephony service = getITelephony();
+            if (service != null) {
+                return service.isMultisimCarrierRestricted();
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "isMultisimCarrierRestricted RemoteException", e);
+        }
+        return true;
+    }
 }
diff --git a/telephony/java/android/telephony/UiccCardInfo.java b/telephony/java/android/telephony/UiccCardInfo.java
index 45e4704..19f357a 100644
--- a/telephony/java/android/telephony/UiccCardInfo.java
+++ b/telephony/java/android/telephony/UiccCardInfo.java
@@ -15,7 +15,6 @@
  */
 package android.telephony;
 
-import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -23,10 +22,8 @@
 
 /**
  * The UiccCardInfo represents information about a currently inserted UICC or embedded eUICC.
- * @hide
  */
-@SystemApi
-public class UiccCardInfo implements Parcelable {
+public final class UiccCardInfo implements Parcelable {
 
     private final boolean mIsEuicc;
     private final int mCardId;
@@ -95,6 +92,9 @@
     /**
      * Get the embedded ID (EID) of the eUICC. If the UiccCardInfo is not an eUICC
      * (see {@link #isEuicc()}), returns null.
+     * <p>
+     * Note that this field may be omitted if the caller does not have the correct permissions
+     * (see {@link TelephonyManager#getUiccCardsInfo()}).
      */
     public String getEid() {
         if (!mIsEuicc) {
@@ -105,6 +105,9 @@
 
     /**
      * Get the ICCID of the UICC.
+     * <p>
+     * Note that this field may be omitted if the caller does not have the correct permissions
+     * (see {@link TelephonyManager#getUiccCardsInfo()}).
      */
     public String getIccId() {
         return mIccId;
@@ -117,6 +120,16 @@
         return mSlotIndex;
     }
 
+    /**
+     * Returns a copy of the UiccCardinfo with the clears the EID and ICCID set to null. These
+     * values are generally private and require carrier privileges to view.
+     *
+     * @hide
+     */
+    public UiccCardInfo getUnprivileged() {
+        return new UiccCardInfo(mIsEuicc, mCardId, null, null, mSlotIndex);
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (this == obj) {
diff --git a/telephony/java/android/telephony/data/DataCallResponse.java b/telephony/java/android/telephony/data/DataCallResponse.java
index 294c79b..3d2fe5f 100644
--- a/telephony/java/android/telephony/data/DataCallResponse.java
+++ b/telephony/java/android/telephony/data/DataCallResponse.java
@@ -23,6 +23,7 @@
 import android.net.LinkAddress;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.telephony.data.ApnSetting.ProtocolType;
 
 import java.net.InetAddress;
 import java.util.ArrayList;
@@ -40,7 +41,7 @@
     private final int mSuggestedRetryTime;
     private final int mCid;
     private final int mActive;
-    private final String mType;
+    private final int mProtocolType;
     private final String mIfname;
     private final List<LinkAddress> mAddresses;
     private final List<InetAddress> mDnses;
@@ -53,8 +54,8 @@
      * @param suggestedRetryTime The suggested data retry time in milliseconds.
      * @param cid The unique id of the data connection.
      * @param active Data connection active status. 0 = inactive, 1 = dormant, 2 = active.
-     * @param type The connection protocol, should be one of the PDP_type values in TS 27.007
-     *             section 10.1.1. For example, "IP", "IPV6", "IPV4V6", or "PPP".
+     * @param protocolType The connection protocol, should be one of the PDP_type values in 3GPP
+     *                     TS 27.007 section 10.1.1. For example, "IP", "IPV6", "IPV4V6", or "PPP".
      * @param ifname The network interface name.
      * @param addresses A list of addresses with optional "/" prefix length, e.g.,
      *                  "192.0.1.3" or "192.0.1.11/16 2001:db8::1/64". Typically 1 IPv4 or 1 IPv6 or
@@ -71,7 +72,7 @@
      *            either not sent a value or sent an invalid value.
      */
     public DataCallResponse(int status, int suggestedRetryTime, int cid, int active,
-                            @Nullable String type, @Nullable String ifname,
+                            @ProtocolType int protocolType, @Nullable String ifname,
                             @Nullable List<LinkAddress> addresses,
                             @Nullable List<InetAddress> dnses,
                             @Nullable List<InetAddress> gateways,
@@ -80,7 +81,7 @@
         mSuggestedRetryTime = suggestedRetryTime;
         mCid = cid;
         mActive = active;
-        mType = (type == null) ? "" : type;
+        mProtocolType = protocolType;
         mIfname = (ifname == null) ? "" : ifname;
         mAddresses = (addresses == null) ? new ArrayList<>() : addresses;
         mDnses = (dnses == null) ? new ArrayList<>() : dnses;
@@ -94,7 +95,7 @@
         mSuggestedRetryTime = source.readInt();
         mCid = source.readInt();
         mActive = source.readInt();
-        mType = source.readString();
+        mProtocolType = source.readInt();
         mIfname = source.readString();
         mAddresses = new ArrayList<>();
         source.readList(mAddresses, LinkAddress.class.getClassLoader());
@@ -128,11 +129,10 @@
     public int getActive() { return mActive; }
 
     /**
-     * @return The connection protocol, should be one of the PDP_type values in TS 27.007 section
-     * 10.1.1. For example, "IP", "IPV6", "IPV4V6", or "PPP".
+     * @return The connection protocol type.
      */
-    @NonNull
-    public String getType() { return mType; }
+    @ProtocolType
+    public int getProtocolType() { return mProtocolType; }
 
     /**
      * @return The network interface name.
@@ -181,7 +181,7 @@
            .append(" retry=").append(mSuggestedRetryTime)
            .append(" cid=").append(mCid)
            .append(" active=").append(mActive)
-           .append(" type=").append(mType)
+           .append(" protocolType=").append(mProtocolType)
            .append(" ifname=").append(mIfname)
            .append(" addresses=").append(mAddresses)
            .append(" dnses=").append(mDnses)
@@ -205,7 +205,7 @@
                 && this.mSuggestedRetryTime == other.mSuggestedRetryTime
                 && this.mCid == other.mCid
                 && this.mActive == other.mActive
-                && this.mType.equals(other.mType)
+                && this.mProtocolType == other.mProtocolType
                 && this.mIfname.equals(other.mIfname)
                 && mAddresses.size() == other.mAddresses.size()
                 && mAddresses.containsAll(other.mAddresses)
@@ -220,8 +220,8 @@
 
     @Override
     public int hashCode() {
-        return Objects.hash(mStatus, mSuggestedRetryTime, mCid, mActive, mType, mIfname, mAddresses,
-                mDnses, mGateways, mPcscfs, mMtu);
+        return Objects.hash(mStatus, mSuggestedRetryTime, mCid, mActive, mProtocolType, mIfname,
+                mAddresses, mDnses, mGateways, mPcscfs, mMtu);
     }
 
     @Override
@@ -235,7 +235,7 @@
         dest.writeInt(mSuggestedRetryTime);
         dest.writeInt(mCid);
         dest.writeInt(mActive);
-        dest.writeString(mType);
+        dest.writeInt(mProtocolType);
         dest.writeString(mIfname);
         dest.writeList(mAddresses);
         dest.writeList(mDnses);
diff --git a/telephony/java/android/telephony/data/DataProfile.java b/telephony/java/android/telephony/data/DataProfile.java
index da4822c..1d196f9 100644
--- a/telephony/java/android/telephony/data/DataProfile.java
+++ b/telephony/java/android/telephony/data/DataProfile.java
@@ -16,14 +16,23 @@
 
 package android.telephony.data;
 
+import static android.telephony.data.ApnSetting.ProtocolType;
+
+import android.annotation.IntDef;
 import android.annotation.SystemApi;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.telephony.TelephonyManager.NetworkTypeBitMask;
+import android.telephony.data.ApnSetting.ApnType;
+import android.telephony.data.ApnSetting.AuthType;
 import android.text.TextUtils;
 
 import com.android.internal.telephony.RILConstants;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * Description of a mobile data profile used for establishing
  * data connections.
@@ -32,24 +41,39 @@
  */
 @SystemApi
 public final class DataProfile implements Parcelable {
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = {"TYPE_"},
+            value = {
+                    TYPE_COMMON,
+                    TYPE_3GPP,
+                    TYPE_3GPP2})
+    public @interface DataProfileType {}
 
-    // The types indicating the data profile is used on GSM (3GPP) or CDMA (3GPP2) network.
+    /** Common data profile */
     public static final int TYPE_COMMON = 0;
+
+    /** 3GPP type data profile */
     public static final int TYPE_3GPP = 1;
+
+    /** 3GPP2 type data profile */
     public static final int TYPE_3GPP2 = 2;
 
     private final int mProfileId;
 
     private final String mApn;
 
-    private final String mProtocol;
+    @ProtocolType
+    private final int mProtocolType;
 
+    @AuthType
     private final int mAuthType;
 
     private final String mUserName;
 
     private final String mPassword;
 
+    @DataProfileType
     private final int mType;
 
     private final int mMaxConnsTime;
@@ -60,10 +84,13 @@
 
     private final boolean mEnabled;
 
+    @ApnType
     private final int mSupportedApnTypesBitmap;
 
-    private final String mRoamingProtocol;
+    @ProtocolType
+    private final int mRoamingProtocolType;
 
+    @NetworkTypeBitMask
     private final int mBearerBitmap;
 
     private final int mMtu;
@@ -73,14 +100,14 @@
     private final boolean mPreferred;
 
     /** @hide */
-    public DataProfile(int profileId, String apn, String protocol, int authType, String userName,
-                       String password, int type, int maxConnsTime, int maxConns, int waitTime,
-                       boolean enabled, int supportedApnTypesBitmap, String roamingProtocol,
-                       int bearerBitmap, int mtu, boolean persistent, boolean preferred) {
-
+    public DataProfile(int profileId, String apn, @ProtocolType int protocolType, int authType,
+                       String userName, String password, int type, int maxConnsTime, int maxConns,
+                       int waitTime, boolean enabled, @ApnType int supportedApnTypesBitmap,
+                       @ProtocolType int roamingProtocolType, @NetworkTypeBitMask int bearerBitmap,
+                       int mtu, boolean persistent, boolean preferred) {
         this.mProfileId = profileId;
         this.mApn = apn;
-        this.mProtocol = protocol;
+        this.mProtocolType = protocolType;
         if (authType == -1) {
             authType = TextUtils.isEmpty(userName) ? RILConstants.SETUP_DATA_AUTH_NONE
                     : RILConstants.SETUP_DATA_AUTH_PAP_CHAP;
@@ -95,7 +122,7 @@
         this.mEnabled = enabled;
 
         this.mSupportedApnTypesBitmap = supportedApnTypesBitmap;
-        this.mRoamingProtocol = roamingProtocol;
+        this.mRoamingProtocolType = roamingProtocolType;
         this.mBearerBitmap = bearerBitmap;
         this.mMtu = mtu;
         this.mPersistent = persistent;
@@ -106,7 +133,7 @@
     public DataProfile(Parcel source) {
         mProfileId = source.readInt();
         mApn = source.readString();
-        mProtocol = source.readString();
+        mProtocolType = source.readInt();
         mAuthType = source.readInt();
         mUserName = source.readString();
         mPassword = source.readString();
@@ -116,7 +143,7 @@
         mWaitTime = source.readInt();
         mEnabled = source.readBoolean();
         mSupportedApnTypesBitmap = source.readInt();
-        mRoamingProtocol = source.readString();
+        mRoamingProtocolType = source.readInt();
         mBearerBitmap = source.readInt();
         mMtu = source.readInt();
         mPersistent = source.readBoolean();
@@ -134,16 +161,14 @@
     public String getApn() { return mApn; }
 
     /**
-     * @return The connection protocol, should be one of the PDP_type values in TS 27.007 section
-     * 10.1.1. For example, "IP", "IPV6", "IPV4V6", or "PPP".
+     * @return The connection protocol defined in 3GPP TS 27.007 section 10.1.1.
      */
-    public String getProtocol() { return mProtocol; }
+    public @ProtocolType int getProtocol() { return mProtocolType; }
 
     /**
-     * @return The authentication protocol used for this PDP context
-     * (None: 0, PAP: 1, CHAP: 2, PAP&CHAP: 3)
+     * @return The authentication protocol used for this PDP context.
      */
-    public int getAuthType() { return mAuthType; }
+    public @AuthType int getAuthType() { return mAuthType; }
 
     /**
      * @return The username for APN. Can be null.
@@ -156,9 +181,9 @@
     public String getPassword() { return mPassword; }
 
     /**
-     * @return The profile type. Could be one of TYPE_COMMON, TYPE_3GPP, or TYPE_3GPP2.
+     * @return The profile type.
      */
-    public int getType() { return mType; }
+    public @DataProfileType int getType() { return mType; }
 
     /**
      * @return The period in seconds to limit the maximum connections.
@@ -183,20 +208,19 @@
     public boolean isEnabled() { return mEnabled; }
 
     /**
-     * @return The supported APN types bitmap. See RIL_ApnTypes for the value of each bit.
+     * @return The supported APN types bitmap.
      */
-    public int getSupportedApnTypesBitmap() { return mSupportedApnTypesBitmap; }
+    public @ApnType int getSupportedApnTypesBitmap() { return mSupportedApnTypesBitmap; }
 
     /**
-     * @return  The connection protocol on roaming network, should be one of the PDP_type values in
-     * TS 27.007 section 10.1.1. For example, "IP", "IPV6", "IPV4V6", or "PPP".
+     * @return The connection protocol on roaming network defined in 3GPP TS 27.007 section 10.1.1.
      */
-    public String getRoamingProtocol() { return mRoamingProtocol; }
+    public @ProtocolType int getRoamingProtocol() { return mRoamingProtocolType; }
 
     /**
-     * @return The bearer bitmap. See RIL_RadioAccessFamily for the value of each bit.
+     * @return The bearer bitmap indicating the applicable networks for this data profile.
      */
-    public int getBearerBitmap() { return mBearerBitmap; }
+    public @NetworkTypeBitMask int getBearerBitmap() { return mBearerBitmap; }
 
     /**
      * @return The maximum transmission unit (MTU) size in bytes.
@@ -222,12 +246,12 @@
 
     @Override
     public String toString() {
-        return "DataProfile=" + mProfileId + "/" + mProtocol + "/" + mAuthType
+        return "DataProfile=" + mProfileId + "/" + mProtocolType + "/" + mAuthType
                 + "/" + (Build.IS_USER ? "***/***/***" :
                          (mApn + "/" + mUserName + "/" + mPassword)) + "/" + mType + "/"
                 + mMaxConnsTime + "/" + mMaxConns + "/"
                 + mWaitTime + "/" + mEnabled + "/" + mSupportedApnTypesBitmap + "/"
-                + mRoamingProtocol + "/" + mBearerBitmap + "/" + mMtu + "/" + mPersistent + "/"
+                + mRoamingProtocolType + "/" + mBearerBitmap + "/" + mMtu + "/" + mPersistent + "/"
                 + mPreferred;
     }
 
@@ -242,7 +266,7 @@
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeInt(mProfileId);
         dest.writeString(mApn);
-        dest.writeString(mProtocol);
+        dest.writeInt(mProtocolType);
         dest.writeInt(mAuthType);
         dest.writeString(mUserName);
         dest.writeString(mPassword);
@@ -252,7 +276,7 @@
         dest.writeInt(mWaitTime);
         dest.writeBoolean(mEnabled);
         dest.writeInt(mSupportedApnTypesBitmap);
-        dest.writeString(mRoamingProtocol);
+        dest.writeInt(mRoamingProtocolType);
         dest.writeInt(mBearerBitmap);
         dest.writeInt(mMtu);
         dest.writeBoolean(mPersistent);
diff --git a/telephony/java/android/telephony/emergency/EmergencyNumber.java b/telephony/java/android/telephony/emergency/EmergencyNumber.java
index a94b163..e68256d 100644
--- a/telephony/java/android/telephony/emergency/EmergencyNumber.java
+++ b/telephony/java/android/telephony/emergency/EmergencyNumber.java
@@ -27,6 +27,7 @@
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
@@ -176,6 +177,12 @@
      * Bit-field which indicates the number is from the platform-maintained database.
      */
     public static final int EMERGENCY_NUMBER_SOURCE_DATABASE =  1 << 4;
+    /**
+     * Bit-field which indicates the number is from test mode.
+     *
+     * @hide
+     */
+    public static final int EMERGENCY_NUMBER_SOURCE_TEST =  1 << 5;
     /** Bit-field which indicates the number is from the modem config. */
     public static final int EMERGENCY_NUMBER_SOURCE_MODEM_CONFIG =
             EmergencyNumberSource.MODEM_CONFIG;
@@ -232,18 +239,21 @@
     private final String mCountryIso;
     private final String mMnc;
     private final int mEmergencyServiceCategoryBitmask;
+    private final List<String> mEmergencyUrns;
     private final int mEmergencyNumberSourceBitmask;
     private final int mEmergencyCallRouting;
 
     /** @hide */
     public EmergencyNumber(@NonNull String number, @NonNull String countryIso, @NonNull String mnc,
                            @EmergencyServiceCategories int emergencyServiceCategories,
+                           @NonNull List<String> emergencyUrns,
                            @EmergencyNumberSources int emergencyNumberSources,
                            @EmergencyCallRouting int emergencyCallRouting) {
         this.mNumber = number;
         this.mCountryIso = countryIso;
         this.mMnc = mnc;
         this.mEmergencyServiceCategoryBitmask = emergencyServiceCategories;
+        this.mEmergencyUrns = emergencyUrns;
         this.mEmergencyNumberSourceBitmask = emergencyNumberSources;
         this.mEmergencyCallRouting = emergencyCallRouting;
     }
@@ -254,6 +264,7 @@
         mCountryIso = source.readString();
         mMnc = source.readString();
         mEmergencyServiceCategoryBitmask = source.readInt();
+        mEmergencyUrns = source.createStringArrayList();
         mEmergencyNumberSourceBitmask = source.readInt();
         mEmergencyCallRouting = source.readInt();
     }
@@ -265,6 +276,7 @@
         dest.writeString(mCountryIso);
         dest.writeString(mMnc);
         dest.writeInt(mEmergencyServiceCategoryBitmask);
+        dest.writeStringList(mEmergencyUrns);
         dest.writeInt(mEmergencyNumberSourceBitmask);
         dest.writeInt(mEmergencyCallRouting);
     }
@@ -322,6 +334,21 @@
     }
 
     /**
+     * Returns the bitmask of emergency service categories of the emergency number for
+     * internal dialing.
+     *
+     * @return bitmask of the emergency service categories
+     *
+     * @hide
+     */
+    public @EmergencyServiceCategories int getEmergencyServiceCategoryBitmaskInternalDial() {
+        if (mEmergencyNumberSourceBitmask == EMERGENCY_NUMBER_SOURCE_DATABASE) {
+            return EMERGENCY_SERVICE_CATEGORY_UNSPECIFIED;
+        }
+        return mEmergencyServiceCategoryBitmask;
+    }
+
+    /**
      * Returns the emergency service categories of the emergency number.
      *
      * Note: if the emergency number is in {@link #EMERGENCY_SERVICE_CATEGORY_UNSPECIFIED}, only
@@ -345,6 +372,22 @@
     }
 
     /**
+     * Returns the list of emergency Uniform Resources Names (URN) of the emergency number.
+     *
+     * For example, {@code urn:service:sos} is the generic URN for contacting emergency services
+     * of all type.
+     *
+     * Reference: 3gpp 24.503, Section 5.1.6.8.1 - General;
+     *            RFC 5031
+     *
+     * @return list of emergency Uniform Resources Names (URN) or an empty list if the emergency
+     *         number does not have a specified emergency Uniform Resource Name.
+     */
+    public @NonNull List<String> getEmergencyUrns() {
+        return mEmergencyUrns;
+    }
+
+    /**
      * Checks if the emergency service category is unspecified for the emergency number
      * {@link #EMERGENCY_SERVICE_CATEGORY_UNSPECIFIED}.
      *
@@ -434,6 +477,7 @@
         return "EmergencyNumber:" + "Number-" + mNumber + "|CountryIso-" + mCountryIso
                 + "|Mnc-" + mMnc
                 + "|ServiceCategories-" + Integer.toBinaryString(mEmergencyServiceCategoryBitmask)
+                + "|Urns-" + mEmergencyUrns
                 + "|Sources-" + Integer.toBinaryString(mEmergencyNumberSourceBitmask)
                 + "|Routing-" + Integer.toBinaryString(mEmergencyCallRouting);
     }
@@ -448,6 +492,7 @@
                 && mCountryIso.equals(other.mCountryIso)
                 && mMnc.equals(other.mMnc)
                 && mEmergencyServiceCategoryBitmask == other.mEmergencyServiceCategoryBitmask
+                && mEmergencyUrns.equals(other.mEmergencyUrns)
                 && mEmergencyNumberSourceBitmask == other.mEmergencyNumberSourceBitmask
                 && mEmergencyCallRouting == other.mEmergencyCallRouting;
     }
@@ -455,7 +500,7 @@
     @Override
     public int hashCode() {
         return Objects.hash(mNumber, mCountryIso, mMnc, mEmergencyServiceCategoryBitmask,
-                mEmergencyNumberSourceBitmask, mEmergencyCallRouting);
+                mEmergencyUrns, mEmergencyNumberSourceBitmask, mEmergencyCallRouting);
     }
 
     /**
@@ -554,6 +599,7 @@
                 emergencyNumberList.remove(i--);
             }
         }
+        Collections.sort(emergencyNumberList);
     }
 
     /**
@@ -584,9 +630,18 @@
                 != second.getEmergencyServiceCategoryBitmask()) {
             return false;
         }
+        if (first.getEmergencyUrns().equals(second.getEmergencyUrns())) {
+            return false;
+        }
         if (first.getEmergencyCallRouting() != second.getEmergencyCallRouting()) {
             return false;
         }
+        // Never merge two numbers if one of them is from test mode but the other one is not;
+        // This supports to remove a number from the test mode.
+        if (first.isFromSources(EMERGENCY_NUMBER_SOURCE_TEST)
+                ^ second.isFromSources(EMERGENCY_NUMBER_SOURCE_TEST)) {
+            return false;
+        }
         return true;
     }
 
@@ -605,10 +660,20 @@
         if (areSameEmergencyNumbers(first, second)) {
             return new EmergencyNumber(first.getNumber(), first.getCountryIso(), first.getMnc(),
                     first.getEmergencyServiceCategoryBitmask(),
+                    first.getEmergencyUrns(),
                     first.getEmergencyNumberSourceBitmask()
                             | second.getEmergencyNumberSourceBitmask(),
                     first.getEmergencyCallRouting());
         }
         return null;
     }
+
+    /**
+     * Validate Emergency Number address that only allows '0'-'9', '*', or '#'
+     *
+     * @hide
+     */
+    public static boolean validateEmergencyNumberAddress(String address) {
+        return address.matches("[0-9*#]+");
+    }
 }
diff --git a/telephony/java/android/telephony/ims/ImsCallProfile.java b/telephony/java/android/telephony/ims/ImsCallProfile.java
index 9c8d078..59167b7 100644
--- a/telephony/java/android/telephony/ims/ImsCallProfile.java
+++ b/telephony/java/android/telephony/ims/ImsCallProfile.java
@@ -33,6 +33,8 @@
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Parcelable object to handle IMS call profile.
@@ -323,6 +325,15 @@
             EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_UNSPECIFIED;
 
     /**
+     * The emergency Uniform Resource Names (URN), only valid if {@link #getServiceType} returns
+     * {@link #SERVICE_TYPE_EMERGENCY}.
+     *
+     * Reference: 3gpp 24.503, Section 5.1.6.8.1 - General;
+     *            3gpp 22.101, Section 10 - Emergency Calls.
+     */
+    private List<String> mEmergencyUrns = new ArrayList<>();
+
+    /**
      * The emergency call routing, only valid if {@link #getServiceType} returns
      * {@link #SERVICE_TYPE_EMERGENCY}
      *
@@ -336,6 +347,9 @@
     private @EmergencyCallRouting int mEmergencyCallRouting =
             EmergencyNumber.EMERGENCY_CALL_ROUTING_UNKNOWN;
 
+    /** Indicates if the call is for testing purpose */
+    private boolean mEmergencyCallTesting = false;
+
     /**
      * Extras associated with this {@link ImsCallProfile}.
      * <p>
@@ -523,8 +537,10 @@
                 + ", callType=" + mCallType
                 + ", restrictCause=" + mRestrictCause
                 + ", mediaProfile=" + mMediaProfile.toString()
-                + ", emergencyServiceCategories=" + mEmergencyCallRouting
-                + ", emergencyCallRouting=" + mEmergencyCallRouting + " }";
+                + ", emergencyServiceCategories=" + mEmergencyServiceCategories
+                + ", emergencyUrns=" + mEmergencyUrns
+                + ", emergencyCallRouting=" + mEmergencyCallRouting
+                + ", emergencyCallTesting=" + mEmergencyCallTesting + " }";
     }
 
     @Override
@@ -540,7 +556,9 @@
         out.writeBundle(filteredExtras);
         out.writeParcelable(mMediaProfile, 0);
         out.writeInt(mEmergencyServiceCategories);
+        out.writeStringList(mEmergencyUrns);
         out.writeInt(mEmergencyCallRouting);
+        out.writeBoolean(mEmergencyCallTesting);
     }
 
     private void readFromParcel(Parcel in) {
@@ -549,7 +567,9 @@
         mCallExtras = in.readBundle();
         mMediaProfile = in.readParcelable(ImsStreamMediaProfile.class.getClassLoader());
         mEmergencyServiceCategories = in.readInt();
+        mEmergencyUrns = in.createStringArrayList();
         mEmergencyCallRouting = in.readInt();
+        mEmergencyCallTesting = in.readBoolean();
     }
 
     public static final Creator<ImsCallProfile> CREATOR = new Creator<ImsCallProfile>() {
@@ -760,20 +780,23 @@
     }
 
     /**
-     * Set the emergency service categories and emergency call routing. The set value is valid
+     * Set the emergency number information. The set value is valid
      * only if {@link #getServiceType} returns {@link #SERVICE_TYPE_EMERGENCY}
      *
      * Reference: 3gpp 23.167, Section 6 - Functional description;
+     *            3gpp 24.503, Section 5.1.6.8.1 - General;
      *            3gpp 22.101, Section 10 - Emergency Calls.
      *
      * @hide
      */
     public void setEmergencyCallInfo(EmergencyNumber num) {
-        setEmergencyServiceCategories(num.getEmergencyServiceCategoryBitmask());
+        setEmergencyServiceCategories(num.getEmergencyServiceCategoryBitmaskInternalDial());
+        setEmergencyUrns(num.getEmergencyUrns());
         setEmergencyCallRouting(num.getEmergencyCallRouting());
+        setEmergencyCallTesting(num.getEmergencyNumberSourceBitmask()
+                == EmergencyNumber.EMERGENCY_NUMBER_SOURCE_TEST);
     }
 
-
     /**
      * Set the emergency service categories. The set value is valid only if
      * {@link #getServiceType} returns {@link #SERVICE_TYPE_EMERGENCY}
@@ -800,6 +823,18 @@
     }
 
     /**
+     * Set the emergency Uniform Resource Names (URN), only valid if {@link #getServiceType}
+     * returns {@link #SERVICE_TYPE_EMERGENCY}.
+     *
+     * Reference: 3gpp 24.503, Section 5.1.6.8.1 - General;
+     *            3gpp 22.101, Section 10 - Emergency Calls.
+     */
+    @VisibleForTesting
+    public void setEmergencyUrns(List<String> emergencyUrns) {
+        mEmergencyUrns = emergencyUrns;
+    }
+
+    /**
      * Set the emergency call routing, only valid if {@link #getServiceType} returns
      * {@link #SERVICE_TYPE_EMERGENCY}
      *
@@ -816,6 +851,15 @@
     }
 
     /**
+     * Set if this is for testing emergency call, only valid if {@link #getServiceType} returns
+     * {@link #SERVICE_TYPE_EMERGENCY}.
+     */
+    @VisibleForTesting
+    public void setEmergencyCallTesting(boolean isTesting) {
+        mEmergencyCallTesting = isTesting;
+    }
+
+    /**
      * Get the emergency service categories, only valid if {@link #getServiceType} returns
      * {@link #SERVICE_TYPE_EMERGENCY}
      *
@@ -841,6 +885,17 @@
     }
 
     /**
+     * Get the emergency Uniform Resource Names (URN), only valid if {@link #getServiceType}
+     * returns {@link #SERVICE_TYPE_EMERGENCY}.
+     *
+     * Reference: 3gpp 24.503, Section 5.1.6.8.1 - General;
+     *            3gpp 22.101, Section 10 - Emergency Calls.
+     */
+    public List<String> getEmergencyUrns() {
+        return mEmergencyUrns;
+    }
+
+    /**
      * Get the emergency call routing, only valid if {@link #getServiceType} returns
      * {@link #SERVICE_TYPE_EMERGENCY}
      *
@@ -854,4 +909,11 @@
     public @EmergencyCallRouting int getEmergencyCallRouting() {
         return mEmergencyCallRouting;
     }
+
+    /**
+     * Get if the emergency call is for testing purpose.
+     */
+    public boolean isEmergencyCallTesting() {
+        return mEmergencyCallTesting;
+    }
 }
diff --git a/telephony/java/android/telephony/ims/ImsMmTelManager.java b/telephony/java/android/telephony/ims/ImsMmTelManager.java
index 9414abd..5b2e635 100644
--- a/telephony/java/android/telephony/ims/ImsMmTelManager.java
+++ b/telephony/java/android/telephony/ims/ImsMmTelManager.java
@@ -86,9 +86,7 @@
 
     /**
      * Prefer registering for IMS over IWLAN if possible if WiFi signal quality is high enough.
-     * @hide
      */
-    @SystemApi
     public static final int WIFI_MODE_WIFI_PREFERRED = 2;
 
     /**
diff --git a/telephony/java/android/telephony/ims/ProvisioningManager.java b/telephony/java/android/telephony/ims/ProvisioningManager.java
index d37198a..086a765 100644
--- a/telephony/java/android/telephony/ims/ProvisioningManager.java
+++ b/telephony/java/android/telephony/ims/ProvisioningManager.java
@@ -21,13 +21,17 @@
 import android.annotation.NonNull;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
+import android.annotation.WorkerThread;
 import android.content.Context;
 import android.os.Binder;
 import android.os.RemoteException;
 import android.os.ServiceManager;
+import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
 import android.telephony.ims.aidl.IImsConfigCallback;
+import android.telephony.ims.feature.MmTelFeature;
 import android.telephony.ims.stub.ImsConfigImplBase;
+import android.telephony.ims.stub.ImsRegistrationImplBase;
 
 import com.android.internal.telephony.ITelephony;
 
@@ -38,13 +42,68 @@
  * to changes in these configurations.
  *
  * Note: IMS provisioning keys are defined per carrier or OEM using OMA-DM or other provisioning
- * applications and may vary.
+ * applications and may vary. For compatibility purposes, the first 100 integer values used in
+ * {@link #setProvisioningIntValue(int, int)} have been reserved for existing provisioning keys
+ * previously defined in the Android framework. Some common constants have been defined in this
+ * class to make integrating with other system apps easier. USE WITH CARE!
+ *
+ * To avoid collisions, please use String based configurations when possible:
+ * {@link #setProvisioningStringValue(int, String)} and {@link #getProvisioningStringValue(int)}.
  * @hide
  */
 @SystemApi
 public class ProvisioningManager {
 
     /**
+     * The query from {@link #getProvisioningStringValue(int)} has resulted in an unspecified error.
+     */
+    public static final String STRING_QUERY_RESULT_ERROR_GENERIC =
+            "STRING_QUERY_RESULT_ERROR_GENERIC";
+
+    /**
+     * The query from {@link #getProvisioningStringValue(int)} has resulted in an error because the
+     * ImsService implementation was not ready for provisioning queries.
+     */
+    public static final String STRING_QUERY_RESULT_ERROR_NOT_READY =
+            "STRING_QUERY_RESULT_ERROR_NOT_READY";
+
+    /**
+     * The integer result of provisioning for the queried key is disabled.
+     */
+    public static final int PROVISIONING_VALUE_DISABLED = 0;
+
+    /**
+     * The integer result of provisioning for the queried key is enabled.
+     */
+    public static final int PROVISIONING_VALUE_ENABLED = 1;
+
+
+    /**
+     * Override the user-defined WiFi Roaming enabled setting for this subscription, defined in
+     * {@link SubscriptionManager#WFC_ROAMING_ENABLED_CONTENT_URI}, for the purposes of provisioning
+     * the subscription for WiFi Calling.
+     *
+     * @see #getProvisioningIntValue(int)
+     * @see #setProvisioningIntValue(int, int)
+     */
+    public static final int KEY_VOICE_OVER_WIFI_ROAMING_ENABLED_OVERRIDE = 26;
+
+    /**
+     * Override the user-defined WiFi mode for this subscription, defined in
+     * {@link SubscriptionManager#WFC_MODE_CONTENT_URI}, for the purposes of provisioning
+     * this subscription for WiFi Calling.
+     *
+     * Valid values for this key are:
+     * {@link ImsMmTelManager#WIFI_MODE_WIFI_ONLY},
+     * {@link ImsMmTelManager#WIFI_MODE_CELLULAR_PREFERRED}, or
+     * {@link ImsMmTelManager#WIFI_MODE_WIFI_PREFERRED}.
+     *
+     * @see #getProvisioningIntValue(int)
+     * @see #setProvisioningIntValue(int, int)
+     */
+    public static final int KEY_VOICE_OVER_WIFI_MODE_OVERRIDE = 27;
+
+    /**
      * Callback for IMS provisioning changes.
      */
     public static class Callback {
@@ -180,10 +239,15 @@
 
     /**
      * Query for the integer value associated with the provided key.
+     *
+     * This operation is blocking and should not be performed on the UI thread.
+     *
      * @param key An integer that represents the provisioning key, which is defined by the OEM.
-     * @return an integer value for the provided key.
+     * @return an integer value for the provided key, or
+     * {@link ImsConfigImplBase#CONFIG_RESULT_UNKNOWN} if the key doesn't exist.
      * @throws IllegalArgumentException if the key provided was invalid.
      */
+    @WorkerThread
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public int getProvisioningIntValue(int key) {
         try {
@@ -195,10 +259,16 @@
 
     /**
      * Query for the String value associated with the provided key.
-     * @param key An integer that represents the provisioning key, which is defined by the OEM.
-     * @return a String value for the provided key, or {@code null} if the key doesn't exist.
+     *
+     * This operation is blocking and should not be performed on the UI thread.
+     *
+     * @param key A String that represents the provisioning key, which is defined by the OEM.
+     * @return a String value for the provided key, {@code null} if the key doesn't exist, or one
+     * of the following error codes: {@link #STRING_QUERY_RESULT_ERROR_GENERIC},
+     * {@link #STRING_QUERY_RESULT_ERROR_NOT_READY}.
      * @throws IllegalArgumentException if the key provided was invalid.
      */
+    @WorkerThread
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public String getProvisioningStringValue(int key) {
         try {
@@ -210,10 +280,16 @@
 
     /**
      * Set the integer value associated with the provided key.
+     *
+     * This operation is blocking and should not be performed on the UI thread.
+     *
+     * Use {@link #setProvisioningStringValue(int, String)} with proper namespacing (to be defined
+     * per OEM or carrier) when possible instead to avoid key collision if needed.
      * @param key An integer that represents the provisioning key, which is defined by the OEM.
      * @param value a integer value for the provided key.
      * @return the result of setting the configuration value.
      */
+    @WorkerThread
     @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
     public @ImsConfigImplBase.SetConfigResult int setProvisioningIntValue(int key, int value) {
         try {
@@ -226,10 +302,14 @@
     /**
      * Set the String value associated with the provided key.
      *
-     * @param key An integer that represents the provisioning key, which is defined by the OEM.
+     * This operation is blocking and should not be performed on the UI thread.
+     *
+     * @param key A String that represents the provisioning key, which is defined by the OEM and
+     *     should be appropriately namespaced to avoid collision.
      * @param value a String value for the provided key.
      * @return the result of setting the configuration value.
      */
+    @WorkerThread
     @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
     public @ImsConfigImplBase.SetConfigResult int setProvisioningStringValue(int key,
             String value) {
@@ -240,6 +320,55 @@
         }
     }
 
+    /**
+     * Set the provisioning status for the IMS MmTel capability using the specified subscription.
+     *
+     * Provisioning may or may not be required, depending on the carrier configuration. If
+     * provisioning is not required for the carrier associated with this subscription or the device
+     * does not support the capability/technology combination specified, this operation will be a
+     * no-op.
+     *
+     * @see CarrierConfigManager#KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL
+     * @see CarrierConfigManager#KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL
+     * @param isProvisioned true if the device is provisioned for UT over IMS, false otherwise.
+     */
+    @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
+    public void setProvisioningStatusForCapability(
+            @MmTelFeature.MmTelCapabilities.MmTelCapability int capability,
+            @ImsRegistrationImplBase.ImsRegistrationTech int tech,  boolean isProvisioned) {
+        try {
+            getITelephony().setImsProvisioningStatusForCapability(mSubId, capability, tech,
+                    isProvisioned);
+        } catch (RemoteException e) {
+            throw e.rethrowAsRuntimeException();
+        }
+    }
+
+    /**
+     * Get the provisioning status for the IMS MmTel capability specified.
+     *
+     * If provisioning is not required for the queried
+     * {@link MmTelFeature.MmTelCapabilities.MmTelCapability} and
+     * {@link ImsRegistrationImplBase.ImsRegistrationTech} combination specified, this method will
+     * always return {@code true}.
+     *
+     * @see CarrierConfigManager#KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL
+     * @see CarrierConfigManager#KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL
+     * @return true if the device is provisioned for the capability or does not require
+     * provisioning, false if the capability does require provisioning and has not been
+     * provisioned yet.
+     */
+    @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+    public boolean getProvisioningStatusForCapability(
+            @MmTelFeature.MmTelCapabilities.MmTelCapability int capability,
+            @ImsRegistrationImplBase.ImsRegistrationTech int tech) {
+        try {
+            return getITelephony().getImsProvisioningStatusForCapability(mSubId, capability, tech);
+        } catch (RemoteException e) {
+            throw e.rethrowAsRuntimeException();
+        }
+    }
+
     private static SubscriptionManager getSubscriptionManager(Context context) {
         SubscriptionManager manager = context.getSystemService(SubscriptionManager.class);
         if (manager == null) {
diff --git a/telephony/java/android/telephony/ims/feature/CapabilityChangeRequest.java b/telephony/java/android/telephony/ims/feature/CapabilityChangeRequest.java
index 7c793a5..1ee8563 100644
--- a/telephony/java/android/telephony/ims/feature/CapabilityChangeRequest.java
+++ b/telephony/java/android/telephony/ims/feature/CapabilityChangeRequest.java
@@ -97,6 +97,13 @@
         public @ImsRegistrationImplBase.ImsRegistrationTech int getRadioTech() {
             return radioTech;
         }
+
+        @Override
+        public String toString() {
+            return "CapabilityPair{"
+                    + "mCapability=" + mCapability
+                    + ", radioTech=" + radioTech + '}';
+        }
     }
 
     // Pair contains <radio tech, mCapability>
@@ -212,6 +219,13 @@
         }
     }
 
+    @Override
+    public String toString() {
+        return "CapabilityChangeRequest{"
+                + "mCapabilitiesToEnable=" + mCapabilitiesToEnable
+                + ", mCapabilitiesToDisable=" + mCapabilitiesToDisable + '}';
+    }
+
     /**
      * @hide
      */
diff --git a/telephony/java/com/android/ims/ImsConfig.java b/telephony/java/com/android/ims/ImsConfig.java
index 71a2174..4fc6a19 100644
--- a/telephony/java/com/android/ims/ImsConfig.java
+++ b/telephony/java/com/android/ims/ImsConfig.java
@@ -277,12 +277,14 @@
          * Wi-Fi calling roaming status.
          * Value is in Integer format. ON (1), OFF(0).
          */
-        public static final int VOICE_OVER_WIFI_ROAMING = 26;
+        public static final int VOICE_OVER_WIFI_ROAMING =
+                ProvisioningManager.KEY_VOICE_OVER_WIFI_ROAMING_ENABLED_OVERRIDE;
         /**
          * Wi-Fi calling modem - WfcModeFeatureValueConstants.
          * Value is in Integer format.
          */
-        public static final int VOICE_OVER_WIFI_MODE = 27;
+        public static final int VOICE_OVER_WIFI_MODE =
+                ProvisioningManager.KEY_VOICE_OVER_WIFI_MODE_OVERRIDE;
         /**
          * VOLTE Status for voice over wifi status of Enabled (1), or Disabled (0).
          * Value is in Integer format.
diff --git a/telephony/java/com/android/ims/internal/uce/common/StatusCode.java b/telephony/java/com/android/ims/internal/uce/common/StatusCode.java
index 3921cfb..7250eee 100644
--- a/telephony/java/com/android/ims/internal/uce/common/StatusCode.java
+++ b/telephony/java/com/android/ims/internal/uce/common/StatusCode.java
@@ -64,6 +64,10 @@
     public static final int UCE_NO_CHANGE_IN_CAP = 13;
     /**  Service is unknown. */
     public static final int UCE_SERVICE_UNKNOWN = 14;
+     /** Service cannot support Invalid Feature Tag   */
+    public static final int UCE_INVALID_FEATURE_TAG = 15;
+    /** Service is Available   */
+    public static final int UCE_SERVICE_AVAILABLE = 16;
 
 
     private int mStatusCode = UCE_SUCCESS;
diff --git a/telephony/java/com/android/ims/internal/uce/uceservice/IUceService.aidl b/telephony/java/com/android/ims/internal/uce/uceservice/IUceService.aidl
index 43f83cd..1fb8513 100644
--- a/telephony/java/com/android/ims/internal/uce/uceservice/IUceService.aidl
+++ b/telephony/java/com/android/ims/internal/uce/uceservice/IUceService.aidl
@@ -66,10 +66,30 @@
      * service the client created.
      *
      * @return  optionsServiceHandle
+     *
      * @hide
+     *
+     * @deprecated This is replaced with new API createOptionsServiceForSubscription()
      */
     int createOptionsService(IOptionsListener optionsListener,
                              inout UceLong optionsServiceListenerHdl);
+    /**
+     * Creates a options service for Capability Discovery.
+     * @param optionsListener IOptionsListener object.
+     * @param optionsServiceListenerHdl wrapper for client's listener handle to be stored.
+     * @param iccId the ICC-ID derived from SubscriptionInfo for the Service requested
+     *
+     * The service will fill UceLong.mUceLong with presenceListenerHandle allocated and
+     * used to validate callbacks received in IPresenceListener are indeed from the
+     * service the client created.
+     *
+     * @return  optionsServiceHandle
+     *
+     * @hide
+     */
+    int createOptionsServiceForSubscription(IOptionsListener optionsListener,
+                             inout UceLong optionsServiceListenerHdl,
+                             in String iccId);
 
     /**
      * Destroys a Options service.
@@ -89,14 +109,36 @@
      * service the client created.
      *
      * @return  presenceServiceHdl
+     *
      * @hide
+     *
+     * @deprecated This is replaced with new API createPresenceServiceForSubscription()
      */
     int createPresenceService(IPresenceListener presenceServiceListener,
                               inout UceLong presenceServiceListenerHdl);
+    /**
+     * Creates a presence service.
+     * @param presenceServiceListener IPresenceListener object
+     * @param presenceServiceListenerHdl wrapper for client's listener handle to be stored.
+     * @param iccId the ICC-ID derived from SubscriptionInfo for the Service requested
+     *
+     * The service will fill UceLong.mUceLong with presenceListenerHandle allocated and
+     * used to validate callbacks received in IPresenceListener are indeed from the
+     * service the client created.
+     *
+     * @return  presenceServiceHdl
+     *
+     * @hide
+     */
+    int createPresenceServiceForSubscription(IPresenceListener presenceServiceListener,
+                              inout UceLong presenceServiceListenerHdl,
+                              in String iccId);
 
     /**
      * Destroys a presence service.
+     *
      * @param presenceServiceHdl handle returned during createPresenceService()
+     *
      * @hide
      */
     void destroyPresenceService(int presenceServiceHdl);
@@ -105,23 +147,55 @@
 
     /**
      * Query the UCE Service for information to know whether the is registered.
+     *
      * @return boolean, true if Registered to for network events else false.
+     *
      * @hide
      */
     boolean getServiceStatus();
 
     /**
      * Query the UCE Service for presence Service.
+     *
      * @return IPresenceService object.
+     *
      * @hide
+     *
+     * @deprecated use API getPresenceServiceForSubscription()
      */
     IPresenceService getPresenceService();
 
     /**
+     * Query the UCE Service for presence Service.
+     *
+     * @param iccId the ICC-ID derived from SubscriptionInfo for the Service requested
+     *
+     * @return IPresenceService object.
+     *
+     * @hide
+     */
+    IPresenceService getPresenceServiceForSubscription(in String iccId);
+
+    /**
      * Query the UCE Service for options service object.
+     *
      * @return IOptionsService object.
+     *
+     * @deprecated use API getOptionsServiceForSubscription()
+     *
      * @hide
      */
     IOptionsService getOptionsService();
 
+    /**
+     * Query the UCE Service for options service object.
+     *
+     * @param iccId the ICC-ID derived from SubscriptionInfo for the Service requested
+     *
+     * @return IOptionsService object.
+     *
+     * @hide
+     */
+    IOptionsService getOptionsServiceForSubscription(in String iccId);
+
 }
diff --git a/telephony/java/com/android/ims/internal/uce/uceservice/UceServiceBase.java b/telephony/java/com/android/ims/internal/uce/uceservice/UceServiceBase.java
index 3660e03..ceb1919 100644
--- a/telephony/java/com/android/ims/internal/uce/uceservice/UceServiceBase.java
+++ b/telephony/java/com/android/ims/internal/uce/uceservice/UceServiceBase.java
@@ -56,6 +56,14 @@
             return onCreateOptionsService(optionsListener, optionsServiceListenerHdl);
         }
 
+        @Override
+        public int createOptionsServiceForSubscription(IOptionsListener optionsListener,
+                                      UceLong optionsServiceListenerHdl,
+                                      String iccId) {
+            return onCreateOptionsService(optionsListener, optionsServiceListenerHdl,
+                                          iccId);
+        }
+
 
         @Override
         public void destroyOptionsService(int optionsServiceHandle) {
@@ -70,6 +78,14 @@
         }
 
         @Override
+        public int createPresenceServiceForSubscription(IPresenceListener presServiceListener,
+                                         UceLong presServiceListenerHdl,
+                                         String iccId) {
+            return onCreatePresService(presServiceListener, presServiceListenerHdl,
+                                       iccId);
+        }
+
+        @Override
         public void destroyPresenceService(int presServiceHdl) {
             onDestroyPresService(presServiceHdl);
         }
@@ -85,9 +101,19 @@
         }
 
         @Override
+        public IPresenceService getPresenceServiceForSubscription(String iccId) {
+            return onGetPresenceService(iccId);
+        }
+
+        @Override
         public IOptionsService getOptionsService() {
             return onGetOptionsService();
         }
+
+        @Override
+        public IOptionsService getOptionsServiceForSubscription(String iccId) {
+            return onGetOptionsService(iccId);
+        }
     }
 
     private UceServiceBinder mBinder;
@@ -120,6 +146,13 @@
         return 0;
     }
 
+    protected int onCreateOptionsService(IOptionsListener optionsListener,
+                                         UceLong optionsServiceListenerHdl,
+                                         String iccId) {
+        //no-op
+        return 0;
+    }
+
     protected void onDestroyOptionsService(int cdServiceHandle) {
         //no-op
         return;
@@ -131,6 +164,13 @@
         return 0;
     }
 
+    protected int onCreatePresService(IPresenceListener presServiceListener,
+                                      UceLong presServiceListenerHdl,
+                                      String iccId) {
+        //no-op
+        return 0;
+    }
+
     protected void onDestroyPresService(int presServiceHdl) {
         //no-op
         return;
@@ -146,8 +186,18 @@
         return null;
     }
 
+    protected IPresenceService onGetPresenceService(String iccId) {
+        //no-op
+        return null;
+    }
+
     protected IOptionsService onGetOptionsService () {
         //no-op
         return null;
     }
+
+    protected IOptionsService onGetOptionsService (String iccId) {
+        //no-op
+        return null;
+    }
 }
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index db76e9e..a12792a 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -42,6 +42,7 @@
 import android.telephony.SignalStrength;
 import android.telephony.TelephonyHistogram;
 import android.telephony.VisualVoicemailSmsFilterSettings;
+import android.telephony.emergency.EmergencyNumber;
 import android.telephony.ims.aidl.IImsCapabilityCallback;
 import android.telephony.ims.aidl.IImsConfig;
 import android.telephony.ims.aidl.IImsConfigCallback;
@@ -1177,12 +1178,12 @@
     void factoryReset(int subId);
 
     /**
-     * An estimate of the users's current locale based on the default SIM.
+     * Returns users's current locale based on the SIM.
      *
      * The returned string will be a well formed BCP-47 language tag, or {@code null}
      * if no locale could be derived.
      */
-    String getLocaleFromDefaultSim();
+    String getSimLocaleForSubscriber(int subId);
 
     /**
      * Requests the modem activity info asynchronously.
@@ -1483,25 +1484,34 @@
      * Get the card ID of the default eUICC card. If there is no eUICC, returns
      * {@link #INVALID_CARD_ID}.
      *
-     * <p>Requires Permission: {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
-     *
      * @param subId subscription ID used for authentication
      * @param callingPackage package making the call
      * @return card ID of the default eUICC card.
-     * @hide
      */
-    int getCardIdForDefaultEuicc(int subId, String callingPackage); 
+    int getCardIdForDefaultEuicc(int subId, String callingPackage);
 
     /**
-     * Gets information about currently inserted UICCs and eUICCs. See {@link UiccCardInfo} for more
-     * details on the kind of information available.
+     * Gets information about currently inserted UICCs and enabled eUICCs.
+     * <p>
+     * Requires that the calling app has carrier privileges (see {@link #hasCarrierPrivileges}).
+     * <p>
+     * If the caller has carrier priviliges on any active subscription, then they have permission to
+     * get simple information like the card ID ({@link UiccCardInfo#getCardId()}), whether the card
+     * is an eUICC ({@link UiccCardInfo#isEuicc()}), and the slot index where the card is inserted
+     * ({@link UiccCardInfo#getSlotIndex()}).
+     * <p>
+     * To get private information such as the EID ({@link UiccCardInfo#getEid()}) or ICCID
+     * ({@link UiccCardInfo#getIccId()}), the caller must have carrier priviliges on that specific
+     * UICC or eUICC card.
+     * <p>
+     * See {@link UiccCardInfo} for more details on the kind of information available.
      *
-     * @return UiccCardInfo an array of UiccCardInfo objects, representing information on the
-     * currently inserted UICCs and eUICCs.
-     *
-     * @hide
+     * @param callingPackage package making the call, used to evaluate carrier privileges 
+     * @return a list of UiccCardInfo objects, representing information on the currently inserted
+     * UICCs and eUICCs. Each UiccCardInfo in the list will have private information filtered out if
+     * the caller does not have adequate permissions for that card.
      */
-    UiccCardInfo[] getUiccCardsInfo();
+    List<UiccCardInfo> getUiccCardsInfo(String callingPackage);
 
     /**
      * Get slot info for all the UICC slots.
@@ -1756,6 +1766,24 @@
     void unregisterImsProvisioningChangedCallback(int subId, IImsConfigCallback callback);
 
     /**
+     * Set the provisioning status for the IMS MmTel capability using the specified subscription.
+     */
+    void setImsProvisioningStatusForCapability(int subId, int capability, int tech,
+            boolean isProvisioned);
+
+    /**
+     * Get the provisioning status for the IMS MmTel capability specified.
+     */
+    boolean getImsProvisioningStatusForCapability(int subId, int capability, int tech);
+
+    /** Is the capability and tech flagged as provisioned in the cache */
+    boolean isMmTelCapabilityProvisionedInCache(int subId, int capability, int tech);
+
+    /** Set the provisioning for the capability and tech in the cache */
+    void cacheMmTelCapabilityProvisioning(int subId, int capability, int tech,
+            boolean isProvisioned);
+
+    /**
      * Return an integer containing the provisioning value for the specified provisioning key.
      */
     int getImsProvisioningInt(int subId, int key);
@@ -1776,7 +1804,29 @@
     int setImsProvisioningString(int subId, int key, String value);
 
     /**
+     * Update Emergency Number List for Test Mode.
+     */
+    void updateEmergencyNumberListTestMode(int action, in EmergencyNumber num);
+
+    /**
+     * Get the full emergency number list for Test Mode.
+     */
+    List<String> getEmergencyNumberListTestMode();
+
+    /**
      * Enable or disable a logical modem stack associated with the slotIndex.
      */
     boolean enableModemForSlot(int slotIndex, boolean enable);
+
+    /**
+     * Indicate if the enablement of multi SIM functionality is restricted.
+     * @hide
+     */
+    void setMultisimCarrierRestriction(boolean isMultisimCarrierRestricted);
+
+    /**
+     * Returns if the usage of multiple SIM cards at the same time is restricted.
+     * @hide
+     */
+    boolean isMultisimCarrierRestricted();
 }
diff --git a/telephony/java/com/android/internal/telephony/RILConstants.java b/telephony/java/com/android/internal/telephony/RILConstants.java
index 599503c..f901c0e 100644
--- a/telephony/java/com/android/internal/telephony/RILConstants.java
+++ b/telephony/java/com/android/internal/telephony/RILConstants.java
@@ -192,31 +192,11 @@
     int LTE_ON_CDMA_FALSE = 0;
     int LTE_ON_CDMA_TRUE = 1;
 
-    int CDM_TTY_MODE_DISABLED = 0;
-    int CDM_TTY_MODE_ENABLED = 1;
-
-    int CDM_TTY_FULL_MODE = 1;
-    int CDM_TTY_HCO_MODE = 2;
-    int CDM_TTY_VCO_MODE = 3;
-
-    /* Setup a packet data connection. See ril.h RIL_REQUEST_SETUP_DATA_CALL */
-    int SETUP_DATA_TECH_CDMA      = 0;
-    int SETUP_DATA_TECH_GSM       = 1;
-
     int SETUP_DATA_AUTH_NONE      = 0;
     int SETUP_DATA_AUTH_PAP       = 1;
     int SETUP_DATA_AUTH_CHAP      = 2;
     int SETUP_DATA_AUTH_PAP_CHAP  = 3;
 
-    String SETUP_DATA_PROTOCOL_IP     = "IP";
-    String SETUP_DATA_PROTOCOL_IPV6   = "IPV6";
-    String SETUP_DATA_PROTOCOL_IPV4V6 = "IPV4V6";
-
-    /* NV config radio reset types. */
-    int NV_CONFIG_RELOAD_RESET = 1;
-    int NV_CONFIG_ERASE_RESET = 2;
-    int NV_CONFIG_FACTORY_RESET = 3;
-
     /* LCE service related constants. */
     int LCE_NOT_AVAILABLE = -1;
     int LCE_STOPPED = 0;
diff --git a/tests/JankBench/app/src/main/java/com/android/benchmark/app/RunLocalBenchmarksActivity.java b/tests/JankBench/app/src/main/java/com/android/benchmark/app/RunLocalBenchmarksActivity.java
index 7641d00..0433f92 100644
--- a/tests/JankBench/app/src/main/java/com/android/benchmark/app/RunLocalBenchmarksActivity.java
+++ b/tests/JankBench/app/src/main/java/com/android/benchmark/app/RunLocalBenchmarksActivity.java
@@ -70,6 +70,7 @@
             R.id.benchmark_text_low_hitrate,
             R.id.benchmark_edit_text_input,
             R.id.benchmark_overdraw,
+            R.id.benchmark_bitmap_upload,
     };
 
     public static class LocalBenchmarksList extends ListFragment {
@@ -204,6 +205,7 @@
             case R.id.benchmark_text_low_hitrate:
             case R.id.benchmark_edit_text_input:
             case R.id.benchmark_overdraw:
+            case R.id.benchmark_bitmap_upload:
             case R.id.benchmark_memory_bandwidth:
             case R.id.benchmark_memory_latency:
             case R.id.benchmark_power_management:
@@ -323,6 +325,9 @@
                 intent = new Intent(getApplicationContext(), EditTextInputActivity.class);
                 break;
             case R.id.benchmark_overdraw:
+                intent = new Intent(getApplicationContext(), FullScreenOverdrawActivity.class);
+                break;
+            case R.id.benchmark_bitmap_upload:
                 intent = new Intent(getApplicationContext(), BitmapUploadActivity.class);
                 break;
             case R.id.benchmark_memory_bandwidth:
diff --git a/tests/JankBench/app/src/main/java/com/android/benchmark/registry/BenchmarkRegistry.java b/tests/JankBench/app/src/main/java/com/android/benchmark/registry/BenchmarkRegistry.java
index 89c6aed..5723c59 100644
--- a/tests/JankBench/app/src/main/java/com/android/benchmark/registry/BenchmarkRegistry.java
+++ b/tests/JankBench/app/src/main/java/com/android/benchmark/registry/BenchmarkRegistry.java
@@ -229,6 +229,8 @@
                 return context.getString(R.string.cpu_gflops_name);
             case R.id.benchmark_overdraw:
                 return context.getString(R.string.overdraw_name);
+            case R.id.benchmark_bitmap_upload:
+                return context.getString(R.string.bitmap_upload_name);
             default:
                 return "Some Benchmark";
         }
diff --git a/tests/JankBench/app/src/main/java/com/android/benchmark/ui/BitmapUploadActivity.java b/tests/JankBench/app/src/main/java/com/android/benchmark/ui/BitmapUploadActivity.java
index f6a528a..1c96cac 100644
--- a/tests/JankBench/app/src/main/java/com/android/benchmark/ui/BitmapUploadActivity.java
+++ b/tests/JankBench/app/src/main/java/com/android/benchmark/ui/BitmapUploadActivity.java
@@ -32,6 +32,7 @@
 import android.view.View;
 
 import com.android.benchmark.R;
+import com.android.benchmark.registry.BenchmarkRegistry;
 import com.android.benchmark.ui.automation.Automator;
 import com.android.benchmark.ui.automation.Interaction;
 
@@ -124,7 +125,9 @@
         final int runId = getIntent().getIntExtra("com.android.benchmark.RUN_ID", 0);
         final int iteration = getIntent().getIntExtra("com.android.benchmark.ITERATION", -1);
 
-        mAutomator = new Automator("BMUpload", runId, iteration, getWindow(),
+        String name = BenchmarkRegistry.getBenchmarkName(this, R.id.benchmark_bitmap_upload);
+
+        mAutomator = new Automator(name, runId, iteration, getWindow(),
                 new Automator.AutomateCallback() {
                     @Override
                     public void onPostAutomate() {
diff --git a/tests/JankBench/app/src/main/res/values/ids.xml b/tests/JankBench/app/src/main/res/values/ids.xml
index 6801fd9..694e0d9 100644
--- a/tests/JankBench/app/src/main/res/values/ids.xml
+++ b/tests/JankBench/app/src/main/res/values/ids.xml
@@ -23,6 +23,7 @@
     <item name="benchmark_text_low_hitrate" type="id" />
     <item name="benchmark_edit_text_input" type="id" />
     <item name="benchmark_overdraw" type="id" />
+    <item name="benchmark_bitmap_upload" type="id" />
     <item name="benchmark_memory_bandwidth" type="id" />
     <item name="benchmark_memory_latency" type="id" />
     <item name="benchmark_power_management" type="id" />
diff --git a/tests/JankBench/app/src/main/res/values/strings.xml b/tests/JankBench/app/src/main/res/values/strings.xml
index 270adf8..5c240589 100644
--- a/tests/JankBench/app/src/main/res/values/strings.xml
+++ b/tests/JankBench/app/src/main/res/values/strings.xml
@@ -33,6 +33,8 @@
     <string name="edit_text_input_description">Tests edit text input</string>
     <string name="overdraw_name">Overdraw Test</string>
     <string name="overdraw_description">Tests how the device handles overdraw</string>
+    <string name="bitmap_upload_name">Bitmap Upload Test</string>
+    <string name="bitmap_upload_description">Tests bitmap upload</string>
     <string name="memory_bandwidth_name">Memory Bandwidth</string>
     <string name="memory_bandwidth_description">Test device\'s memory bandwidth</string>
     <string name="memory_latency_name">Memory Latency</string>
diff --git a/tests/JankBench/app/src/main/res/xml/benchmark.xml b/tests/JankBench/app/src/main/res/xml/benchmark.xml
index 07c453c..fccc7b9 100644
--- a/tests/JankBench/app/src/main/res/xml/benchmark.xml
+++ b/tests/JankBench/app/src/main/res/xml/benchmark.xml
@@ -62,6 +62,12 @@
         benchmark:category="ui"
         benchmark:description="@string/overdraw_description" />
 
+    <com.android.benchmark.Benchmark
+        benchmark:name="@string/bitmap_upload_name"
+        benchmark:id="@id/benchmark_bitmap_upload"
+        benchmark:category="ui"
+        benchmark:description="@string/bitmap_upload_description" />
+
     <!--
     <com.android.benchmark.Benchmark
         benchmark:name="@string/memory_bandwidth_name"
diff --git a/tests/net/java/android/net/NetworkUtilsTest.java b/tests/net/java/android/net/NetworkUtilsTest.java
index 3452819..ba6e0f2 100644
--- a/tests/net/java/android/net/NetworkUtilsTest.java
+++ b/tests/net/java/android/net/NetworkUtilsTest.java
@@ -16,161 +16,19 @@
 
 package android.net;
 
-import static android.net.NetworkUtils.getImplicitNetmask;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
-import static android.net.NetworkUtils.inet4AddressToIntHTL;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
-import static android.net.NetworkUtils.intToInet4AddressHTL;
-import static android.net.NetworkUtils.netmaskToPrefixLength;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTH;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTL;
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-
 import static junit.framework.Assert.assertEquals;
 
-import static org.junit.Assert.fail;
-
 import android.support.test.runner.AndroidJUnit4;
 
-import java.math.BigInteger;
-import java.net.Inet4Address;
-import java.net.InetAddress;
-import java.util.TreeSet;
-
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.math.BigInteger;
+import java.util.TreeSet;
+
 @RunWith(AndroidJUnit4.class)
 @android.support.test.filters.SmallTest
 public class NetworkUtilsTest {
-
-    private InetAddress Address(String addr) {
-        return InetAddress.parseNumericAddress(addr);
-    }
-
-    private Inet4Address IPv4Address(String addr) {
-        return (Inet4Address) Address(addr);
-    }
-
-    @Test
-    public void testGetImplicitNetmask() {
-        assertEquals(8, getImplicitNetmask(IPv4Address("4.2.2.2")));
-        assertEquals(8, getImplicitNetmask(IPv4Address("10.5.6.7")));
-        assertEquals(16, getImplicitNetmask(IPv4Address("173.194.72.105")));
-        assertEquals(16, getImplicitNetmask(IPv4Address("172.23.68.145")));
-        assertEquals(24, getImplicitNetmask(IPv4Address("192.0.2.1")));
-        assertEquals(24, getImplicitNetmask(IPv4Address("192.168.5.1")));
-        assertEquals(32, getImplicitNetmask(IPv4Address("224.0.0.1")));
-        assertEquals(32, getImplicitNetmask(IPv4Address("255.6.7.8")));
-    }
-
-    private void assertInvalidNetworkMask(Inet4Address addr) {
-        try {
-            netmaskToPrefixLength(addr);
-            fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    @Test
-    public void testInet4AddressToIntHTL() {
-        assertEquals(0, inet4AddressToIntHTL(IPv4Address("0.0.0.0")));
-        assertEquals(0x000080ff, inet4AddressToIntHTL(IPv4Address("255.128.0.0")));
-        assertEquals(0x0080ff0a, inet4AddressToIntHTL(IPv4Address("10.255.128.0")));
-        assertEquals(0x00feff0a, inet4AddressToIntHTL(IPv4Address("10.255.254.0")));
-        assertEquals(0xfeffa8c0, inet4AddressToIntHTL(IPv4Address("192.168.255.254")));
-        assertEquals(0xffffa8c0, inet4AddressToIntHTL(IPv4Address("192.168.255.255")));
-    }
-
-    @Test
-    public void testIntToInet4AddressHTL() {
-        assertEquals(IPv4Address("0.0.0.0"), intToInet4AddressHTL(0));
-        assertEquals(IPv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff));
-        assertEquals(IPv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a));
-        assertEquals(IPv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a));
-        assertEquals(IPv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0));
-        assertEquals(IPv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0));
-    }
-
-    @Test
-    public void testInet4AddressToIntHTH() {
-        assertEquals(0, inet4AddressToIntHTH(IPv4Address("0.0.0.0")));
-        assertEquals(0xff800000, inet4AddressToIntHTH(IPv4Address("255.128.0.0")));
-        assertEquals(0x0aff8000, inet4AddressToIntHTH(IPv4Address("10.255.128.0")));
-        assertEquals(0x0afffe00, inet4AddressToIntHTH(IPv4Address("10.255.254.0")));
-        assertEquals(0xc0a8fffe, inet4AddressToIntHTH(IPv4Address("192.168.255.254")));
-        assertEquals(0xc0a8ffff, inet4AddressToIntHTH(IPv4Address("192.168.255.255")));
-    }
-
-    @Test
-    public void testIntToInet4AddressHTH() {
-        assertEquals(IPv4Address("0.0.0.0"), intToInet4AddressHTH(0));
-        assertEquals(IPv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000));
-        assertEquals(IPv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000));
-        assertEquals(IPv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00));
-        assertEquals(IPv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe));
-        assertEquals(IPv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff));
-    }
-
-    @Test
-    public void testNetmaskToPrefixLength() {
-        assertEquals(0, netmaskToPrefixLength(IPv4Address("0.0.0.0")));
-        assertEquals(9, netmaskToPrefixLength(IPv4Address("255.128.0.0")));
-        assertEquals(17, netmaskToPrefixLength(IPv4Address("255.255.128.0")));
-        assertEquals(23, netmaskToPrefixLength(IPv4Address("255.255.254.0")));
-        assertEquals(31, netmaskToPrefixLength(IPv4Address("255.255.255.254")));
-        assertEquals(32, netmaskToPrefixLength(IPv4Address("255.255.255.255")));
-
-        assertInvalidNetworkMask(IPv4Address("0.0.0.1"));
-        assertInvalidNetworkMask(IPv4Address("255.255.255.253"));
-        assertInvalidNetworkMask(IPv4Address("255.255.0.255"));
-    }
-
-    @Test
-    public void testPrefixLengthToV4NetmaskIntHTL() {
-        assertEquals(0, prefixLengthToV4NetmaskIntHTL(0));
-        assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9));
-        assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17));
-        assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23));
-        assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31));
-        assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32));
-    }
-
-    @Test
-    public void testPrefixLengthToV4NetmaskIntHTH() {
-        assertEquals(0, prefixLengthToV4NetmaskIntHTH(0));
-        assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9));
-        assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17));
-        assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23));
-        assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31));
-        assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32));
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() {
-        prefixLengthToV4NetmaskIntHTH(-1);
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() {
-        prefixLengthToV4NetmaskIntHTH(33);
-    }
-
-    private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) {
-        final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength);
-        final int addrInt = inet4AddressToIntHTH(IPv4Address(addr));
-        assertEquals(IPv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt));
-    }
-
-    @Test
-    public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() {
-        checkAddressMasking("192.168.0.0", "192.168.128.1", 16);
-        checkAddressMasking("255.240.0.0", "255.255.255.255", 12);
-        checkAddressMasking("255.255.255.255", "255.255.255.255", 32);
-        checkAddressMasking("0.0.0.0", "255.255.255.255", 0);
-    }
-
     @Test
     public void testRoutedIPv4AddressCount() {
         final TreeSet<IpPrefix> set = new TreeSet<>(IpPrefix.lengthComparator());
@@ -267,44 +125,4 @@
         assertEquals(BigInteger.valueOf(7l - 4 + 4 + 16 + 65536),
                 NetworkUtils.routedIPv6AddressCount(set));
     }
-
-    @Test
-    public void testGetPrefixMaskAsAddress() {
-        assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress());
-        assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress());
-        assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress());
-        assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress());
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetPrefixMaskAsAddress_PrefixTooLarge() {
-        getPrefixMaskAsInet4Address(33);
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetPrefixMaskAsAddress_NegativePrefix() {
-        getPrefixMaskAsInet4Address(-1);
-    }
-
-    @Test
-    public void testGetBroadcastAddress() {
-        assertEquals("192.168.15.255",
-                getBroadcastAddress(IPv4Address("192.168.0.123"), 20).getHostAddress());
-        assertEquals("192.255.255.255",
-                getBroadcastAddress(IPv4Address("192.168.0.123"), 8).getHostAddress());
-        assertEquals("192.168.0.123",
-                getBroadcastAddress(IPv4Address("192.168.0.123"), 32).getHostAddress());
-        assertEquals("255.255.255.255",
-                getBroadcastAddress(IPv4Address("192.168.0.123"), 0).getHostAddress());
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetBroadcastAddress_PrefixTooLarge() {
-        getBroadcastAddress(IPv4Address("192.168.0.123"), 33);
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetBroadcastAddress_NegativePrefix() {
-        getBroadcastAddress(IPv4Address("192.168.0.123"), -1);
-    }
 }
diff --git a/tests/net/java/android/net/StaticIpConfigurationTest.java b/tests/net/java/android/net/StaticIpConfigurationTest.java
index 5bb5734..2b5ad37 100644
--- a/tests/net/java/android/net/StaticIpConfigurationTest.java
+++ b/tests/net/java/android/net/StaticIpConfigurationTest.java
@@ -26,13 +26,13 @@
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.net.InetAddress;
 import java.util.HashSet;
 import java.util.Objects;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class StaticIpConfigurationTest {
@@ -203,7 +203,7 @@
         try {
             s.writeToParcel(p, 0);
             p.setDataPosition(0);
-            s2 = StaticIpConfiguration.CREATOR.createFromParcel(p);
+            s2 = StaticIpConfiguration.readFromParcel(p);
         } finally {
             p.recycle();
         }
diff --git a/tests/net/java/android/net/ip/InterfaceControllerTest.java b/tests/net/java/android/net/ip/InterfaceControllerTest.java
new file mode 100644
index 0000000..d27a4f9
--- /dev/null
+++ b/tests/net/java/android/net/ip/InterfaceControllerTest.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.ip;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import android.net.INetd;
+import android.net.InetAddresses;
+import android.net.InterfaceConfigurationParcel;
+import android.net.LinkAddress;
+import android.net.util.SharedLog;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class InterfaceControllerTest {
+    private static final String TEST_IFACE = "testif";
+    private static final String TEST_IPV4_ADDR = "192.168.123.28";
+    private static final int TEST_PREFIXLENGTH = 31;
+
+    @Mock private INetd mNetd;
+    @Mock private SharedLog mLog;
+    @Captor private ArgumentCaptor<InterfaceConfigurationParcel> mConfigCaptor;
+
+    private InterfaceController mController;
+
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        mController = new InterfaceController(TEST_IFACE, mNetd, mLog);
+
+        doNothing().when(mNetd).interfaceSetCfg(mConfigCaptor.capture());
+    }
+
+    @Test
+    public void testSetIPv4Address() throws Exception {
+        mController.setIPv4Address(
+                new LinkAddress(InetAddresses.parseNumericAddress(TEST_IPV4_ADDR),
+                        TEST_PREFIXLENGTH));
+        verify(mNetd, times(1)).interfaceSetCfg(any());
+        final InterfaceConfigurationParcel parcel = mConfigCaptor.getValue();
+        assertEquals(TEST_IFACE, parcel.ifName);
+        assertEquals(TEST_IPV4_ADDR, parcel.ipv4Addr);
+        assertEquals(TEST_PREFIXLENGTH, parcel.prefixLength);
+        assertEquals("", parcel.hwAddr);
+        assertArrayEquals(new String[0], parcel.flags);
+    }
+
+    @Test
+    public void testClearIPv4Address() throws Exception {
+        mController.clearIPv4Address();
+        verify(mNetd, times(1)).interfaceSetCfg(any());
+        final InterfaceConfigurationParcel parcel = mConfigCaptor.getValue();
+        assertEquals(TEST_IFACE, parcel.ifName);
+        assertEquals("0.0.0.0", parcel.ipv4Addr);
+        assertEquals(0, parcel.prefixLength);
+        assertEquals("", parcel.hwAddr);
+        assertArrayEquals(new String[0], parcel.flags);
+    }
+}
diff --git a/tests/net/java/android/net/ip/IpServerTest.java b/tests/net/java/android/net/ip/IpServerTest.java
index 80aac04..f7542a7 100644
--- a/tests/net/java/android/net/ip/IpServerTest.java
+++ b/tests/net/java/android/net/ip/IpServerTest.java
@@ -22,11 +22,11 @@
 import static android.net.ConnectivityManager.TETHER_ERROR_ENABLE_NAT_ERROR;
 import static android.net.ConnectivityManager.TETHER_ERROR_NO_ERROR;
 import static android.net.ConnectivityManager.TETHER_ERROR_TETHER_IFACE_ERROR;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
 import static android.net.dhcp.IDhcpServer.STATUS_SUCCESS;
 import static android.net.ip.IpServer.STATE_AVAILABLE;
 import static android.net.ip.IpServer.STATE_TETHERED;
 import static android.net.ip.IpServer.STATE_UNAVAILABLE;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
diff --git a/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java b/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java
new file mode 100644
index 0000000..6da8514
--- /dev/null
+++ b/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.shared;
+
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getImplicitNetmask;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTL;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTL;
+import static android.net.shared.Inet4AddressUtils.netmaskToPrefixLength;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL;
+
+import static junit.framework.Assert.assertEquals;
+
+import static org.junit.Assert.fail;
+
+import android.net.InetAddresses;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class Inet4AddressUtilsTest {
+
+    @Test
+    public void testInet4AddressToIntHTL() {
+        assertEquals(0, inet4AddressToIntHTL(ipv4Address("0.0.0.0")));
+        assertEquals(0x000080ff, inet4AddressToIntHTL(ipv4Address("255.128.0.0")));
+        assertEquals(0x0080ff0a, inet4AddressToIntHTL(ipv4Address("10.255.128.0")));
+        assertEquals(0x00feff0a, inet4AddressToIntHTL(ipv4Address("10.255.254.0")));
+        assertEquals(0xfeffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.254")));
+        assertEquals(0xffffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.255")));
+    }
+
+    @Test
+    public void testIntToInet4AddressHTL() {
+        assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTL(0));
+        assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff));
+        assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a));
+        assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a));
+        assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0));
+        assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0));
+    }
+
+    @Test
+    public void testInet4AddressToIntHTH() {
+        assertEquals(0, inet4AddressToIntHTH(ipv4Address("0.0.0.0")));
+        assertEquals(0xff800000, inet4AddressToIntHTH(ipv4Address("255.128.0.0")));
+        assertEquals(0x0aff8000, inet4AddressToIntHTH(ipv4Address("10.255.128.0")));
+        assertEquals(0x0afffe00, inet4AddressToIntHTH(ipv4Address("10.255.254.0")));
+        assertEquals(0xc0a8fffe, inet4AddressToIntHTH(ipv4Address("192.168.255.254")));
+        assertEquals(0xc0a8ffff, inet4AddressToIntHTH(ipv4Address("192.168.255.255")));
+    }
+
+    @Test
+    public void testIntToInet4AddressHTH() {
+        assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTH(0));
+        assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000));
+        assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000));
+        assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00));
+        assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe));
+        assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff));
+    }
+
+
+    @Test
+    public void testPrefixLengthToV4NetmaskIntHTL() {
+        assertEquals(0, prefixLengthToV4NetmaskIntHTL(0));
+        assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9));
+        assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17));
+        assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23));
+        assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31));
+        assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32));
+    }
+
+    @Test
+    public void testPrefixLengthToV4NetmaskIntHTH() {
+        assertEquals(0, prefixLengthToV4NetmaskIntHTH(0));
+        assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9));
+        assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17));
+        assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23));
+        assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31));
+        assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32));
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() {
+        prefixLengthToV4NetmaskIntHTH(-1);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() {
+        prefixLengthToV4NetmaskIntHTH(33);
+    }
+
+    private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) {
+        final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength);
+        final int addrInt = inet4AddressToIntHTH(ipv4Address(addr));
+        assertEquals(ipv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt));
+    }
+
+    @Test
+    public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() {
+        checkAddressMasking("192.168.0.0", "192.168.128.1", 16);
+        checkAddressMasking("255.240.0.0", "255.255.255.255", 12);
+        checkAddressMasking("255.255.255.255", "255.255.255.255", 32);
+        checkAddressMasking("0.0.0.0", "255.255.255.255", 0);
+    }
+
+    @Test
+    public void testGetImplicitNetmask() {
+        assertEquals(8, getImplicitNetmask(ipv4Address("4.2.2.2")));
+        assertEquals(8, getImplicitNetmask(ipv4Address("10.5.6.7")));
+        assertEquals(16, getImplicitNetmask(ipv4Address("173.194.72.105")));
+        assertEquals(16, getImplicitNetmask(ipv4Address("172.23.68.145")));
+        assertEquals(24, getImplicitNetmask(ipv4Address("192.0.2.1")));
+        assertEquals(24, getImplicitNetmask(ipv4Address("192.168.5.1")));
+        assertEquals(32, getImplicitNetmask(ipv4Address("224.0.0.1")));
+        assertEquals(32, getImplicitNetmask(ipv4Address("255.6.7.8")));
+    }
+
+    private void assertInvalidNetworkMask(Inet4Address addr) {
+        try {
+            netmaskToPrefixLength(addr);
+            fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testNetmaskToPrefixLength() {
+        assertEquals(0, netmaskToPrefixLength(ipv4Address("0.0.0.0")));
+        assertEquals(9, netmaskToPrefixLength(ipv4Address("255.128.0.0")));
+        assertEquals(17, netmaskToPrefixLength(ipv4Address("255.255.128.0")));
+        assertEquals(23, netmaskToPrefixLength(ipv4Address("255.255.254.0")));
+        assertEquals(31, netmaskToPrefixLength(ipv4Address("255.255.255.254")));
+        assertEquals(32, netmaskToPrefixLength(ipv4Address("255.255.255.255")));
+
+        assertInvalidNetworkMask(ipv4Address("0.0.0.1"));
+        assertInvalidNetworkMask(ipv4Address("255.255.255.253"));
+        assertInvalidNetworkMask(ipv4Address("255.255.0.255"));
+    }
+
+    @Test
+    public void testGetPrefixMaskAsAddress() {
+        assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress());
+        assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress());
+        assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress());
+        assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress());
+    }
+
+    @Test
+    public void testGetBroadcastAddress() {
+        assertEquals("192.168.15.255",
+                getBroadcastAddress(ipv4Address("192.168.0.123"), 20).getHostAddress());
+        assertEquals("192.255.255.255",
+                getBroadcastAddress(ipv4Address("192.168.0.123"), 8).getHostAddress());
+        assertEquals("192.168.0.123",
+                getBroadcastAddress(ipv4Address("192.168.0.123"), 32).getHostAddress());
+        assertEquals("255.255.255.255",
+                getBroadcastAddress(ipv4Address("192.168.0.123"), 0).getHostAddress());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testGetBroadcastAddress_PrefixTooLarge() {
+        getBroadcastAddress(ipv4Address("192.168.0.123"), 33);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testGetBroadcastAddress_NegativePrefix() {
+        getBroadcastAddress(ipv4Address("192.168.0.123"), -1);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testGetPrefixMaskAsAddress_PrefixTooLarge() {
+        getPrefixMaskAsInet4Address(33);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testGetPrefixMaskAsAddress_NegativePrefix() {
+        getPrefixMaskAsInet4Address(-1);
+    }
+
+    private Inet4Address ipv4Address(String addr) {
+        return (Inet4Address) InetAddresses.parseNumericAddress(addr);
+    }
+}
diff --git a/tests/net/java/android/net/shared/IpConfigurationParcelableUtilTest.java b/tests/net/java/android/net/shared/IpConfigurationParcelableUtilTest.java
index 14df392..fb4d43c 100644
--- a/tests/net/java/android/net/shared/IpConfigurationParcelableUtilTest.java
+++ b/tests/net/java/android/net/shared/IpConfigurationParcelableUtilTest.java
@@ -62,7 +62,7 @@
         mDhcpResults.leaseDuration = 3600;
         mDhcpResults.mtu = 1450;
         // Any added DhcpResults field must be included in equals() to be tested properly
-        assertFieldCountEquals(4, DhcpResults.class);
+        assertFieldCountEquals(8, DhcpResults.class);
     }
 
     @Test
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index b5d5f61..036c5dc 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -57,6 +57,7 @@
 import static android.net.NetworkPolicyManager.RULE_NONE;
 import static android.net.NetworkPolicyManager.RULE_REJECT_ALL;
 import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
+import static android.net.shared.NetworkParcelableUtil.fromStableParcelable;
 
 import static com.android.internal.util.TestUtils.waitForIdleHandler;
 import static com.android.internal.util.TestUtils.waitForIdleLooper;
@@ -119,10 +120,12 @@
 import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
 import android.net.NetworkMisc;
+import android.net.NetworkParcelable;
 import android.net.NetworkRequest;
 import android.net.NetworkSpecifier;
 import android.net.NetworkStack;
 import android.net.NetworkUtils;
+import android.net.ProxyInfo;
 import android.net.RouteInfo;
 import android.net.SocketKeepalive;
 import android.net.UidRange;
@@ -161,6 +164,7 @@
 import com.android.server.connectivity.IpConnectivityMetrics;
 import com.android.server.connectivity.MockableSystemProperties;
 import com.android.server.connectivity.Nat464Xlat;
+import com.android.server.connectivity.ProxyTracker;
 import com.android.server.connectivity.Tethering;
 import com.android.server.connectivity.Vpn;
 import com.android.server.net.NetworkPinner;
@@ -480,8 +484,8 @@
                 fail(e.getMessage());
             }
 
-            final ArgumentCaptor<Network> nmNetworkCaptor =
-                    ArgumentCaptor.forClass(Network.class);
+            final ArgumentCaptor<NetworkParcelable> nmNetworkCaptor =
+                    ArgumentCaptor.forClass(NetworkParcelable.class);
             final ArgumentCaptor<INetworkMonitorCallbacks> nmCbCaptor =
                     ArgumentCaptor.forClass(INetworkMonitorCallbacks.class);
             doNothing().when(mNetworkStack).makeNetworkMonitor(
@@ -521,7 +525,8 @@
                 }
             };
 
-            assertEquals(mNetworkAgent.netId, nmNetworkCaptor.getValue().netId);
+            assertEquals(
+                    mNetworkAgent.netId, fromStableParcelable(nmNetworkCaptor.getValue()).netId);
             mNmCallbacks = nmCbCaptor.getValue();
 
             try {
@@ -1007,6 +1012,11 @@
         }
 
         @Override
+        protected ProxyTracker makeProxyTracker() {
+            return mock(ProxyTracker.class);
+        }
+
+        @Override
         protected int reserveNetId() {
             while (true) {
                 final int netId = super.reserveNetId();
@@ -1028,6 +1038,11 @@
             }
         }
 
+        @Override
+        protected boolean queryUserAccess(int uid, int netId) {
+            return true;
+        }
+
         public Nat464Xlat getNat464Xlat(MockNetworkAgent mna) {
             return getNetworkAgentInfoForNetwork(mna.getNetwork()).clatd;
         }
@@ -5132,4 +5147,84 @@
         mCellNetworkAgent.sendLinkProperties(lp);
         verifyTcpBufferSizeChange(TEST_TCP_BUFFER_SIZES);
     }
+
+    @Test
+    public void testGetGlobalProxyForNetwork() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        final Network wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        when(mService.mProxyTracker.getGlobalProxy()).thenReturn(testProxyInfo);
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(wifiNetwork));
+    }
+
+    @Test
+    public void testGetProxyForActiveNetwork() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        mWiFiNetworkAgent.connect(true);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        final LinkProperties testLinkProperties = new LinkProperties();
+        testLinkProperties.setHttpProxy(testProxyInfo);
+
+        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+    }
+
+    @Test
+    public void testGetProxyForVPN() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+
+        // Set up a WiFi network with no proxy
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        mWiFiNetworkAgent.connect(true);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Set up a VPN network with a proxy
+        final int uid = Process.myUid();
+        final MockNetworkAgent vpnNetworkAgent = new MockNetworkAgent(TRANSPORT_VPN);
+        final ArraySet<UidRange> ranges = new ArraySet<>();
+        ranges.add(new UidRange(uid, uid));
+        mMockVpn.setUids(ranges);
+        LinkProperties testLinkProperties = new LinkProperties();
+        testLinkProperties.setHttpProxy(testProxyInfo);
+        vpnNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+
+        // Connect to VPN with proxy
+        mMockVpn.setNetworkAgent(vpnNetworkAgent);
+        vpnNetworkAgent.connect(true);
+        mMockVpn.connect();
+        waitForIdle();
+
+        // Test that the VPN network returns a proxy, and the WiFi does not.
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(vpnNetworkAgent.getNetwork()));
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+        assertNull(mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+
+        // Test that the VPN network returns no proxy when it is set to null.
+        testLinkProperties.setHttpProxy(null);
+        vpnNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(vpnNetworkAgent.getNetwork()));
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Set WiFi proxy and check that the vpn proxy is still null.
+        testLinkProperties.setHttpProxy(testProxyInfo);
+        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Disconnect from VPN and check that the active network, which is now the WiFi, has the
+        // correct proxy setting.
+        vpnNetworkAgent.disconnect();
+        waitForIdle();
+        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+    }
 }
diff --git a/tests/net/java/com/android/server/connectivity/VpnTest.java b/tests/net/java/com/android/server/connectivity/VpnTest.java
index 0b74d87..5b17224 100644
--- a/tests/net/java/com/android/server/connectivity/VpnTest.java
+++ b/tests/net/java/com/android/server/connectivity/VpnTest.java
@@ -246,17 +246,17 @@
         assertFalse(vpn.getLockdown());
 
         // Set always-on without lockdown.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], false));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], false, Collections.emptyList()));
         assertTrue(vpn.getAlwaysOn());
         assertFalse(vpn.getLockdown());
 
         // Set always-on with lockdown.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true, Collections.emptyList()));
         assertTrue(vpn.getAlwaysOn());
         assertTrue(vpn.getLockdown());
 
         // Remove always-on configuration.
-        assertTrue(vpn.setAlwaysOnPackage(null, false));
+        assertTrue(vpn.setAlwaysOnPackage(null, false, Collections.emptyList()));
         assertFalse(vpn.getAlwaysOn());
         assertFalse(vpn.getLockdown());
     }
@@ -270,11 +270,11 @@
         assertUnblocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[1], user.start + PKG_UIDS[2], user.start + PKG_UIDS[3]);
 
         // Set always-on without lockdown.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], false));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], false, null));
         assertUnblocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[1], user.start + PKG_UIDS[2], user.start + PKG_UIDS[3]);
 
         // Set always-on with lockdown.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true, null));
         verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
             new UidRange(user.start, user.start + PKG_UIDS[1] - 1),
             new UidRange(user.start + PKG_UIDS[1] + 1, user.stop)
@@ -283,7 +283,7 @@
         assertUnblocked(vpn, user.start + PKG_UIDS[1]);
 
         // Switch to another app.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[3], true));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[3], true, null));
         verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[] {
             new UidRange(user.start, user.start + PKG_UIDS[1] - 1),
             new UidRange(user.start + PKG_UIDS[1] + 1, user.stop)
@@ -297,6 +297,87 @@
     }
 
     @Test
+    public void testLockdownWhitelist() throws Exception {
+        final Vpn vpn = createVpn(primaryUser.id);
+        final UidRange user = UidRange.createForUser(primaryUser.id);
+
+        // Set always-on with lockdown and whitelist app PKGS[2] from lockdown.
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true, Collections.singletonList(PKGS[2])));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
+                new UidRange(user.start, user.start + PKG_UIDS[1] - 1),
+                new UidRange(user.start + PKG_UIDS[2] + 1, user.stop)
+        }));
+        assertBlocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[3]);
+        assertUnblocked(vpn, user.start + PKG_UIDS[1], user.start + PKG_UIDS[2]);
+
+        // Change whitelisted app to PKGS[3].
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[1], true, Collections.singletonList(PKGS[3])));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[2] + 1, user.stop)
+        }));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[1] + 1, user.start + PKG_UIDS[3] - 1),
+                new UidRange(user.start + PKG_UIDS[3] + 1, user.stop)
+        }));
+        assertBlocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[2]);
+        assertUnblocked(vpn, user.start + PKG_UIDS[1], user.start + PKG_UIDS[3]);
+
+        // Change the VPN app.
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[0], true, Collections.singletonList(PKGS[3])));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[] {
+                new UidRange(user.start, user.start + PKG_UIDS[1] - 1),
+                new UidRange(user.start + PKG_UIDS[1] + 1, user.start + PKG_UIDS[3] - 1)
+        }));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
+                new UidRange(user.start, user.start + PKG_UIDS[0] - 1),
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.start + PKG_UIDS[3] - 1)
+        }));
+        assertBlocked(vpn, user.start + PKG_UIDS[1], user.start + PKG_UIDS[2]);
+        assertUnblocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[3]);
+
+        // Remove the whitelist.
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[0], true, null));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.start + PKG_UIDS[3] - 1),
+                new UidRange(user.start + PKG_UIDS[3] + 1, user.stop)
+        }));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.stop),
+        }));
+        assertBlocked(vpn, user.start + PKG_UIDS[1], user.start + PKG_UIDS[2],
+                user.start + PKG_UIDS[3]);
+        assertUnblocked(vpn, user.start + PKG_UIDS[0]);
+
+        // Add the whitelist.
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[0], true, Collections.singletonList(PKGS[1])));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.stop)
+        }));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.start + PKG_UIDS[1] - 1),
+                new UidRange(user.start + PKG_UIDS[1] + 1, user.stop)
+        }));
+        assertBlocked(vpn, user.start + PKG_UIDS[2], user.start + PKG_UIDS[3]);
+        assertUnblocked(vpn, user.start + PKG_UIDS[0], user.start + PKG_UIDS[1]);
+
+        // Try whitelisting a package with a comma, should be rejected.
+        assertFalse(vpn.setAlwaysOnPackage(PKGS[0], true, Collections.singletonList("a.b,c.d")));
+
+        // Pass a non-existent packages in the whitelist, they (and only they) should be ignored.
+        // Whitelisted package should change from PGKS[1] to PKGS[2].
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[0], true,
+                Arrays.asList("com.foo.app", PKGS[2], "com.bar.app")));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(false), aryEq(new UidRange[]{
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.start + PKG_UIDS[1] - 1),
+                new UidRange(user.start + PKG_UIDS[1] + 1, user.stop)
+        }));
+        verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[]{
+                new UidRange(user.start + PKG_UIDS[0] + 1, user.start + PKG_UIDS[2] - 1),
+                new UidRange(user.start + PKG_UIDS[2] + 1, user.stop)
+        }));
+    }
+
+    @Test
     public void testLockdownAddingAProfile() throws Exception {
         final Vpn vpn = createVpn(primaryUser.id);
         setMockedUsers(primaryUser);
@@ -310,7 +391,7 @@
         final UidRange profile = UidRange.createForUser(tempProfile.id);
 
         // Set lockdown.
-        assertTrue(vpn.setAlwaysOnPackage(PKGS[3], true));
+        assertTrue(vpn.setAlwaysOnPackage(PKGS[3], true, null));
         verify(mNetService).setAllowOnlyVpnForUids(eq(true), aryEq(new UidRange[] {
             new UidRange(user.start, user.start + PKG_UIDS[3] - 1),
             new UidRange(user.start + PKG_UIDS[3] + 1, user.stop)
@@ -436,7 +517,7 @@
                 .cancelAsUser(anyString(), anyInt(), eq(userHandle));
 
         // Start showing a notification for disconnected once always-on.
-        vpn.setAlwaysOnPackage(PKGS[0], false);
+        vpn.setAlwaysOnPackage(PKGS[0], false, null);
         order.verify(mNotificationManager)
                 .notifyAsUser(anyString(), anyInt(), any(), eq(userHandle));
 
@@ -450,7 +531,7 @@
                 .notifyAsUser(anyString(), anyInt(), any(), eq(userHandle));
 
         // Notification should be cleared after unsetting always-on package.
-        vpn.setAlwaysOnPackage(null, false);
+        vpn.setAlwaysOnPackage(null, false, null);
         order.verify(mNotificationManager).cancelAsUser(anyString(), anyInt(), eq(userHandle));
     }
 
@@ -583,7 +664,9 @@
             doAnswer(invocation -> {
                 final String appName = (String) invocation.getArguments()[0];
                 final int userId = (int) invocation.getArguments()[1];
-                return UserHandle.getUid(userId, packages.get(appName));
+                Integer appId = packages.get(appName);
+                if (appId == null) throw new PackageManager.NameNotFoundException(appName);
+                return UserHandle.getUid(userId, appId);
             }).when(mPackageManager).getPackageUidAsUser(anyString(), anyInt());
         } catch (Exception e) {
         }
diff --git a/tests/net/java/com/android/server/net/ipmemorystore/IpMemoryStoreServiceTest.java b/tests/net/java/com/android/server/net/ipmemorystore/IpMemoryStoreServiceTest.java
index f2ecef9..e57433a 100644
--- a/tests/net/java/com/android/server/net/ipmemorystore/IpMemoryStoreServiceTest.java
+++ b/tests/net/java/com/android/server/net/ipmemorystore/IpMemoryStoreServiceTest.java
@@ -202,9 +202,11 @@
         final CountDownLatch latch = new CountDownLatch(1);
         functor.accept(latch);
         try {
-            latch.await(5000, TimeUnit.MILLISECONDS);
+            if (!latch.await(5000, TimeUnit.MILLISECONDS)) {
+                fail(timeoutMessage);
+            }
         } catch (InterruptedException e) {
-            fail(timeoutMessage);
+            fail("Thread was interrupted");
         }
     }
 
@@ -314,6 +316,7 @@
                             assertEquals(Status.ERROR_ILLEGAL_ARGUMENT, status.resultCode);
                             assertNull(key);
                             assertNull(attr);
+                            latch.countDown();
                         })));
     }
 
@@ -383,6 +386,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[5], key);
+                    latch.countDown();
                 })));
 
         // MTU matches key 4 but v4 address matches key 5. The latter is stronger.
@@ -392,6 +396,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[5], key);
+                    latch.countDown();
                 })));
 
         // Closest to key 3 (indeed, identical)
@@ -402,6 +407,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[3], key);
+                    latch.countDown();
                 })));
 
         // Group hint alone must not be strong enough to override the rest
@@ -411,6 +417,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[3], key);
+                    latch.countDown();
                 })));
 
         // Still closest to key 3, though confidence is lower
@@ -421,6 +428,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[3], key);
+                    latch.countDown();
                 })));
 
         // But changing the MTU makes this closer to key 4
@@ -430,6 +438,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(FAKE_KEYS[4], key);
+                    latch.countDown();
                 })));
 
         // MTU alone not strong enough to make this group-close
@@ -441,6 +450,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertNull(key);
+                    latch.countDown();
                 })));
     }
 
@@ -450,6 +460,7 @@
                     assertTrue("Retrieve network sameness not successful : " + status.resultCode,
                             status.isSuccess());
                     assertEquals(sameness, answer.getNetworkSameness());
+                    latch.countDown();
                 })));
     }
 
@@ -488,6 +499,7 @@
                             + status.resultCode, status.isSuccess());
                     assertEquals(Status.ERROR_ILLEGAL_ARGUMENT, status.resultCode);
                     assertNull(answer);
+                    latch.countDown();
                 })));
     }
 }
diff --git a/tools/aapt2/link/ManifestFixer_test.cpp b/tools/aapt2/link/ManifestFixer_test.cpp
index 5bc004d..cf85726 100644
--- a/tools/aapt2/link/ManifestFixer_test.cpp
+++ b/tools/aapt2/link/ManifestFixer_test.cpp
@@ -350,133 +350,133 @@
 }
 
 TEST_F(ManifestFixerTest, DontUseDefaultVersionNameAndCode) {
-ManifestFixerOptions options;
-options.version_name_default = std::string("Beta");
-options.version_code_default = std::string("0x10000000");
+  ManifestFixerOptions options;
+  options.version_name_default = std::string("Beta");
+  options.version_code_default = std::string("0x10000000");
 
-std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
+  std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
       <manifest xmlns:android="http://schemas.android.com/apk/res/android"
                 package="android"
                 android:versionCode="0x20000000"
                 android:versionName="Alpha" />)EOF",
-                                                          options);
-ASSERT_THAT(doc, NotNull());
+                                                            options);
+  ASSERT_THAT(doc, NotNull());
 
-xml::Element* manifest_el = doc->root.get();
-ASSERT_THAT(manifest_el, NotNull());
+  xml::Element* manifest_el = doc->root.get();
+  ASSERT_THAT(manifest_el, NotNull());
 
-xml::Attribute* attr =
-    manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("Alpha"));
+  xml::Attribute* attr =
+      manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("Alpha"));
 
-attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("0x20000000"));
+  attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("0x20000000"));
 }
 
 TEST_F(ManifestFixerTest, ReplaceVersionNameAndCode) {
-ManifestFixerOptions options;
-options.replace_version = true;
-options.version_name_default = std::string("Beta");
-options.version_code_default = std::string("0x10000000");
+  ManifestFixerOptions options;
+  options.replace_version = true;
+  options.version_name_default = std::string("Beta");
+  options.version_code_default = std::string("0x10000000");
 
-std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
+  std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
     <manifest xmlns:android="http://schemas.android.com/apk/res/android"
               package="android"
               android:versionCode="0x20000000"
               android:versionName="Alpha" />)EOF",
-                                                          options);
-ASSERT_THAT(doc, NotNull());
+                                                            options);
+  ASSERT_THAT(doc, NotNull());
 
-xml::Element* manifest_el = doc->root.get();
-ASSERT_THAT(manifest_el, NotNull());
+  xml::Element* manifest_el = doc->root.get();
+  ASSERT_THAT(manifest_el, NotNull());
 
-xml::Attribute* attr =
-    manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("Beta"));
+  xml::Attribute* attr =
+      manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("Beta"));
 
-attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("0x10000000"));
+  attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("0x10000000"));
 }
 
 TEST_F(ManifestFixerTest, ReplaceVersionName) {
-ManifestFixerOptions options;
-options.replace_version = true;
-options.version_name_default = std::string("Beta");
+  ManifestFixerOptions options;
+  options.replace_version = true;
+  options.version_name_default = std::string("Beta");
 
-std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
+  std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
             package="android"
             android:versionCode="0x20000000"
             android:versionName="Alpha" />)EOF",
-                                                          options);
-ASSERT_THAT(doc, NotNull());
+                                                            options);
+  ASSERT_THAT(doc, NotNull());
 
-xml::Element* manifest_el = doc->root.get();
-ASSERT_THAT(manifest_el, NotNull());
+  xml::Element* manifest_el = doc->root.get();
+  ASSERT_THAT(manifest_el, NotNull());
 
-xml::Attribute* attr =
-    manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("Beta"));
+  xml::Attribute* attr =
+      manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("Beta"));
 
-attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("0x20000000"));
+  attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("0x20000000"));
 }
 
 TEST_F(ManifestFixerTest, ReplaceVersionCode) {
-ManifestFixerOptions options;
-options.replace_version = true;
-options.version_code_default = std::string("0x10000000");
+  ManifestFixerOptions options;
+  options.replace_version = true;
+  options.version_code_default = std::string("0x10000000");
 
-std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
+  std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
             package="android"
             android:versionCode="0x20000000"
             android:versionName="Alpha" />)EOF",
-                                                          options);
-ASSERT_THAT(doc, NotNull());
+                                                            options);
+  ASSERT_THAT(doc, NotNull());
 
-xml::Element* manifest_el = doc->root.get();
-ASSERT_THAT(manifest_el, NotNull());
+  xml::Element* manifest_el = doc->root.get();
+  ASSERT_THAT(manifest_el, NotNull());
 
-xml::Attribute* attr =
-    manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("Alpha"));
+  xml::Attribute* attr =
+      manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("Alpha"));
 
-attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("0x10000000"));
+  attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("0x10000000"));
 }
 
 TEST_F(ManifestFixerTest, DontReplaceVersionNameOrCode) {
-ManifestFixerOptions options;
-options.replace_version = true;
+  ManifestFixerOptions options;
+  options.replace_version = true;
 
-std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
+  std::unique_ptr<xml::XmlResource> doc = VerifyWithOptions(R"EOF(
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="android"
           android:versionCode="0x20000000"
           android:versionName="Alpha" />)EOF",
-                                                          options);
-ASSERT_THAT(doc, NotNull());
+                                                            options);
+  ASSERT_THAT(doc, NotNull());
 
-xml::Element* manifest_el = doc->root.get();
-ASSERT_THAT(manifest_el, NotNull());
+  xml::Element* manifest_el = doc->root.get();
+  ASSERT_THAT(manifest_el, NotNull());
 
-xml::Attribute* attr =
-    manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("Alpha"));
+  xml::Attribute* attr =
+      manifest_el->FindAttribute(xml::kSchemaAndroid, "versionName");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("Alpha"));
 
-attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
-ASSERT_THAT(attr, NotNull());
-EXPECT_THAT(attr->value, StrEq("0x20000000"));
+  attr = manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode");
+  ASSERT_THAT(attr, NotNull());
+  EXPECT_THAT(attr->value, StrEq("0x20000000"));
 }
 
 TEST_F(ManifestFixerTest, EnsureManifestAttributesAreTyped) {
@@ -673,7 +673,8 @@
   options.warn_validation = true;
 
   // Unexpected element should result in a warning if the flag is set to 'true'.
-  std::unique_ptr<xml::XmlResource> manifest = VerifyWithOptions(input, options);
+  std::unique_ptr<xml::XmlResource> manifest =
+      VerifyWithOptions(input, options);
   ASSERT_THAT(manifest, NotNull());
 
   // Unexpected element should result in an error if the flag is set to 'false'.
diff --git a/tools/apilint/apilint.py b/tools/apilint/apilint.py
index 75c3eba..59e89f5 100644
--- a/tools/apilint/apilint.py
+++ b/tools/apilint/apilint.py
@@ -223,6 +223,7 @@
 class V2Tokenizer(object):
     __slots__ = ["raw"]
 
+    SIGNATURE_PREFIX = "// Signature format: "
     DELIMITER = re.compile(r'\s+|[()@<>;,={}/"!?]|\[\]|\.\.\.')
     STRING_SPECIAL = re.compile(r'["\\]')
 
@@ -610,8 +611,12 @@
         else:
             blame = None
 
-        if line == 1 and raw == "// Signature format: 2.0":
-            sig_format = 2
+        if line == 1 and raw.startswith("// Signature format: "):
+            sig_format_string = raw[len(V2Tokenizer.SIGNATURE_PREFIX):]
+            if sig_format_string in ["2.0", "3.0"]:
+                sig_format = 2
+            else:
+                raise ValueError("Unknown format: %s" % (sig_format_string,))
         elif raw.startswith("package"):
             pkg = Package(line, raw, blame)
         elif raw.startswith("  ") and raw.endswith("{"):
diff --git a/tools/apilint/apilint_test.py b/tools/apilint/apilint_test.py
index 9c261d5..3716bf9 100644
--- a/tools/apilint/apilint_test.py
+++ b/tools/apilint/apilint_test.py
@@ -164,6 +164,23 @@
         self.assertEquals(api['android.SomeEnum'].ctors[0].split[0], 'ctor')
         self.assertEquals(api['android.SomeEnum'].methods[0].split[0], 'method')
 
+class ParseV3Stream(unittest.TestCase):
+    def test_field_kinds(self):
+        api = apilint._parse_stream("""
+// Signature format: 3.0
+package a {
+
+  public final class ContextKt {
+    method public static inline <reified T> T! getSystemService(android.content.Context);
+    method public static inline void withStyledAttributes(android.content.Context, android.util.AttributeSet? set = null, int[] attrs, @AttrRes int defStyleAttr = 0, @StyleRes int defStyleRes = 0, kotlin.jvm.functions.Function1<? super android.content.res.TypedArray,kotlin.Unit> block);
+  }
+}
+        """.strip().split('\n'))
+        self.assertEquals(api['a.ContextKt'].methods[0].name, 'getSystemService')
+        self.assertEquals(api['a.ContextKt'].methods[0].split[:4], ['method', 'public', 'static', 'inline'])
+        self.assertEquals(api['a.ContextKt'].methods[1].name, 'withStyledAttributes')
+        self.assertEquals(api['a.ContextKt'].methods[1].split[:4], ['method', 'public', 'static', 'inline'])
+
 class V2TokenizerTests(unittest.TestCase):
     def _test(self, raw, expected):
         self.assertEquals(apilint.V2Tokenizer(raw).tokenize(), expected)