diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 8546cbc..6ccd9de 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -24,6 +24,16 @@ static void hci_cmd_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode,
 	hdev->req_result = result;
 	hdev->req_status = HCI_REQ_DONE;
 
+	if (skb) {
+		struct sock *sk = hci_skb_sk(skb);
+
+		/* Drop sk reference if set */
+		if (sk)
+			sock_put(sk);
+
+		hdev->req_skb = skb_get(skb);
+	}
+
 	wake_up_interruptible(&hdev->req_wait_q);
 }
 
@@ -51,6 +61,14 @@ static struct sk_buff *hci_cmd_sync_alloc(struct hci_dev *hdev, u16 opcode,
 	hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
 	hci_skb_opcode(skb) = opcode;
 
+	/* Grab a reference if command needs to be associated with a sock (e.g.
+	 * likely mgmt socket that initiated the command).
+	 */
+	if (sk) {
+		hci_skb_sk(skb) = sk;
+		sock_hold(sk);
+	}
+
 	return skb;
 }
 
@@ -400,3 +418,875 @@ int hci_update_class_sync(struct hci_dev *hdev)
 	return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
 				     sizeof(cod), cod, HCI_CMD_TIMEOUT);
 }
+
+static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
+{
+	/* If there is no connection we are OK to advertise. */
+	if (hci_conn_num(hdev, LE_LINK) == 0)
+		return true;
+
+	/* Check le_states if there is any connection in peripheral role. */
+	if (hdev->conn_hash.le_num_peripheral > 0) {
+		/* Peripheral connection state and non connectable mode
+		 * bit 20.
+		 */
+		if (!connectable && !(hdev->le_states[2] & 0x10))
+			return false;
+
+		/* Peripheral connection state and connectable mode bit 38
+		 * and scannable bit 21.
+		 */
+		if (connectable && (!(hdev->le_states[4] & 0x40) ||
+				    !(hdev->le_states[2] & 0x20)))
+			return false;
+	}
+
+	/* Check le_states if there is any connection in central role. */
+	if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
+		/* Central connection state and non connectable mode bit 18. */
+		if (!connectable && !(hdev->le_states[2] & 0x02))
+			return false;
+
+		/* Central connection state and connectable mode bit 35 and
+		 * scannable 19.
+		 */
+		if (connectable && (!(hdev->le_states[4] & 0x08) ||
+				    !(hdev->le_states[2] & 0x08)))
+			return false;
+	}
+
+	return true;
+}
+
+static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
+{
+	/* If privacy is not enabled don't use RPA */
+	if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
+		return false;
+
+	/* If basic privacy mode is enabled use RPA */
+	if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
+		return true;
+
+	/* If limited privacy mode is enabled don't use RPA if we're
+	 * both discoverable and bondable.
+	 */
+	if ((flags & MGMT_ADV_FLAG_DISCOV) &&
+	    hci_dev_test_flag(hdev, HCI_BONDABLE))
+		return false;
+
+	/* We're neither bondable nor discoverable in the limited
+	 * privacy mode, therefore use RPA.
+	 */
+	return true;
+}
+
+static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
+{
+	/* If we're advertising or initiating an LE connection we can't
+	 * go ahead and change the random address at this time. This is
+	 * because the eventual initiator address used for the
+	 * subsequently created connection will be undefined (some
+	 * controllers use the new address and others the one we had
+	 * when the operation started).
+	 *
+	 * In this kind of scenario skip the update and let the random
+	 * address be updated at the next cycle.
+	 */
+	if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
+	    hci_lookup_le_connect(hdev)) {
+		bt_dev_dbg(hdev, "Deferring random address update");
+		hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
+		return 0;
+	}
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
+				     6, rpa, HCI_CMD_TIMEOUT);
+}
+
+int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
+				   bool rpa, u8 *own_addr_type)
+{
+	int err;
+
+	/* If privacy is enabled use a resolvable private address. If
+	 * current RPA has expired or there is something else than
+	 * the current RPA in use, then generate a new one.
+	 */
+	if (rpa) {
+		/* If Controller supports LL Privacy use own address type is
+		 * 0x03
+		 */
+		if (use_ll_privacy(hdev) &&
+		    hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY))
+			*own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
+		else
+			*own_addr_type = ADDR_LE_DEV_RANDOM;
+
+		/* Check if RPA is valid */
+		if (rpa_valid(hdev))
+			return 0;
+
+		err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
+		if (err < 0) {
+			bt_dev_err(hdev, "failed to generate new RPA");
+			return err;
+		}
+
+		err = hci_set_random_addr_sync(hdev, &hdev->rpa);
+		if (err)
+			return err;
+
+		return 0;
+	}
+
+	/* In case of required privacy without resolvable private address,
+	 * use an non-resolvable private address. This is useful for active
+	 * scanning and non-connectable advertising.
+	 */
+	if (require_privacy) {
+		bdaddr_t nrpa;
+
+		while (true) {
+			/* The non-resolvable private address is generated
+			 * from random six bytes with the two most significant
+			 * bits cleared.
+			 */
+			get_random_bytes(&nrpa, 6);
+			nrpa.b[5] &= 0x3f;
+
+			/* The non-resolvable private address shall not be
+			 * equal to the public address.
+			 */
+			if (bacmp(&hdev->bdaddr, &nrpa))
+				break;
+		}
+
+		*own_addr_type = ADDR_LE_DEV_RANDOM;
+
+		return hci_set_random_addr_sync(hdev, &nrpa);
+	}
+
+	/* If forcing static address is in use or there is no public
+	 * address use the static address as random address (but skip
+	 * the HCI command if the current random address is already the
+	 * static one.
+	 *
+	 * In case BR/EDR has been disabled on a dual-mode controller
+	 * and a static address has been configured, then use that
+	 * address instead of the public BR/EDR address.
+	 */
+	if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
+	    !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
+	    (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
+	     bacmp(&hdev->static_addr, BDADDR_ANY))) {
+		*own_addr_type = ADDR_LE_DEV_RANDOM;
+		if (bacmp(&hdev->static_addr, &hdev->random_addr))
+			return hci_set_random_addr_sync(hdev,
+							&hdev->static_addr);
+		return 0;
+	}
+
+	/* Neither privacy nor static address is being used so use a
+	 * public address.
+	 */
+	*own_addr_type = ADDR_LE_DEV_PUBLIC;
+
+	return 0;
+}
+
+static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct hci_cp_le_set_ext_adv_enable *cp;
+	struct hci_cp_ext_adv_set *set;
+	u8 data[sizeof(*cp) + sizeof(*set) * 1];
+	u8 size;
+
+	/* If request specifies an instance that doesn't exist, fail */
+	if (instance > 0) {
+		struct adv_info *adv;
+
+		adv = hci_find_adv_instance(hdev, instance);
+		if (!adv)
+			return -EINVAL;
+
+		/* If not enabled there is nothing to do */
+		if (!adv->enabled)
+			return 0;
+	}
+
+	memset(data, 0, sizeof(data));
+
+	cp = (void *)data;
+	set = (void *)cp->data;
+
+	/* Instance 0x00 indicates all advertising instances will be disabled */
+	cp->num_of_sets = !!instance;
+	cp->enable = 0x00;
+
+	set->handle = instance;
+
+	size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
+				     size, data, HCI_CMD_TIMEOUT);
+}
+
+static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance,
+					    bdaddr_t *random_addr)
+{
+	struct hci_cp_le_set_adv_set_rand_addr cp;
+	int err;
+
+	if (!instance) {
+		/* Instance 0x00 doesn't have an adv_info, instead it uses
+		 * hdev->random_addr to track its address so whenever it needs
+		 * to be updated this also set the random address since
+		 * hdev->random_addr is shared with scan state machine.
+		 */
+		err = hci_set_random_addr_sync(hdev, random_addr);
+		if (err)
+			return err;
+	}
+
+	memset(&cp, 0, sizeof(cp));
+
+	cp.handle = instance;
+	bacpy(&cp.bdaddr, random_addr);
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
+				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
+}
+
+int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct hci_cp_le_set_ext_adv_params cp;
+	bool connectable;
+	u32 flags;
+	bdaddr_t random_addr;
+	u8 own_addr_type;
+	int err;
+	struct adv_info *adv;
+	bool secondary_adv;
+
+	if (instance > 0) {
+		adv = hci_find_adv_instance(hdev, instance);
+		if (!adv)
+			return -EINVAL;
+	} else {
+		adv = NULL;
+	}
+
+	/* Updating parameters of an active instance will return a
+	 * Command Disallowed error, so we must first disable the
+	 * instance if it is active.
+	 */
+	if (adv && !adv->pending) {
+		err = hci_disable_ext_adv_instance_sync(hdev, instance);
+		if (err)
+			return err;
+	}
+
+	flags = hci_adv_instance_flags(hdev, instance);
+
+	/* If the "connectable" instance flag was not set, then choose between
+	 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
+	 */
+	connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
+		      mgmt_get_connectable(hdev);
+
+	if (!is_advertising_allowed(hdev, connectable))
+		return -EPERM;
+
+	/* Set require_privacy to true only when non-connectable
+	 * advertising is used. In that case it is fine to use a
+	 * non-resolvable private address.
+	 */
+	err = hci_get_random_address(hdev, !connectable,
+				     adv_use_rpa(hdev, flags), adv,
+				     &own_addr_type, &random_addr);
+	if (err < 0)
+		return err;
+
+	memset(&cp, 0, sizeof(cp));
+
+	if (adv) {
+		hci_cpu_to_le24(adv->min_interval, cp.min_interval);
+		hci_cpu_to_le24(adv->max_interval, cp.max_interval);
+		cp.tx_power = adv->tx_power;
+	} else {
+		hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
+		hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
+		cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
+	}
+
+	secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
+
+	if (connectable) {
+		if (secondary_adv)
+			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
+		else
+			cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
+	} else if (hci_adv_instance_is_scannable(hdev, instance) ||
+		   (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
+		if (secondary_adv)
+			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
+		else
+			cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
+	} else {
+		if (secondary_adv)
+			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
+		else
+			cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
+	}
+
+	cp.own_addr_type = own_addr_type;
+	cp.channel_map = hdev->le_adv_channel_map;
+	cp.handle = instance;
+
+	if (flags & MGMT_ADV_FLAG_SEC_2M) {
+		cp.primary_phy = HCI_ADV_PHY_1M;
+		cp.secondary_phy = HCI_ADV_PHY_2M;
+	} else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
+		cp.primary_phy = HCI_ADV_PHY_CODED;
+		cp.secondary_phy = HCI_ADV_PHY_CODED;
+	} else {
+		/* In all other cases use 1M */
+		cp.primary_phy = HCI_ADV_PHY_1M;
+		cp.secondary_phy = HCI_ADV_PHY_1M;
+	}
+
+	err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
+				    sizeof(cp), &cp, HCI_CMD_TIMEOUT);
+	if (err)
+		return err;
+
+	if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
+	     own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
+	    bacmp(&random_addr, BDADDR_ANY)) {
+		/* Check if random address need to be updated */
+		if (adv) {
+			if (!bacmp(&random_addr, &adv->random_addr))
+				return 0;
+		} else {
+			if (!bacmp(&random_addr, &hdev->random_addr))
+				return 0;
+		}
+
+		return hci_set_adv_set_random_addr_sync(hdev, instance,
+							&random_addr);
+	}
+
+	return 0;
+}
+
+static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct {
+		struct hci_cp_le_set_ext_scan_rsp_data cp;
+		u8 data[HCI_MAX_EXT_AD_LENGTH];
+	} pdu;
+	u8 len;
+
+	memset(&pdu, 0, sizeof(pdu));
+
+	len = eir_create_scan_rsp(hdev, instance, pdu.data);
+
+	if (hdev->scan_rsp_data_len == len &&
+	    !memcmp(pdu.data, hdev->scan_rsp_data, len))
+		return 0;
+
+	memcpy(hdev->scan_rsp_data, pdu.data, len);
+	hdev->scan_rsp_data_len = len;
+
+	pdu.cp.handle = instance;
+	pdu.cp.length = len;
+	pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
+	pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
+				     sizeof(pdu.cp) + len, &pdu.cp,
+				     HCI_CMD_TIMEOUT);
+}
+
+static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct hci_cp_le_set_scan_rsp_data cp;
+	u8 len;
+
+	memset(&cp, 0, sizeof(cp));
+
+	len = eir_create_scan_rsp(hdev, instance, cp.data);
+
+	if (hdev->scan_rsp_data_len == len &&
+	    !memcmp(cp.data, hdev->scan_rsp_data, len))
+		return 0;
+
+	memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
+	hdev->scan_rsp_data_len = len;
+
+	cp.length = len;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA,
+				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
+}
+
+int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
+		return 0;
+
+	if (ext_adv_capable(hdev))
+		return hci_set_ext_scan_rsp_data_sync(hdev, instance);
+
+	return __hci_set_scan_rsp_data_sync(hdev, instance);
+}
+
+int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct hci_cp_le_set_ext_adv_enable *cp;
+	struct hci_cp_ext_adv_set *set;
+	u8 data[sizeof(*cp) + sizeof(*set) * 1];
+	struct adv_info *adv;
+
+	if (instance > 0) {
+		adv = hci_find_adv_instance(hdev, instance);
+		if (!adv)
+			return -EINVAL;
+		/* If already enabled there is nothing to do */
+		if (adv->enabled)
+			return 0;
+	} else {
+		adv = NULL;
+	}
+
+	cp = (void *)data;
+	set = (void *)cp->data;
+
+	memset(cp, 0, sizeof(*cp));
+
+	cp->enable = 0x01;
+	cp->num_of_sets = 0x01;
+
+	memset(set, 0, sizeof(*set));
+
+	set->handle = instance;
+
+	/* Set duration per instance since controller is responsible for
+	 * scheduling it.
+	 */
+	if (adv && adv->duration) {
+		u16 duration = adv->timeout * MSEC_PER_SEC;
+
+		/* Time = N * 10 ms */
+		set->duration = cpu_to_le16(duration / 10);
+	}
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
+				     sizeof(*cp) +
+				     sizeof(*set) * cp->num_of_sets,
+				     data, HCI_CMD_TIMEOUT);
+}
+
+int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance)
+{
+	int err;
+
+	err = hci_setup_ext_adv_instance_sync(hdev, instance);
+	if (err)
+		return err;
+
+	err = hci_set_ext_scan_rsp_data_sync(hdev, instance);
+	if (err)
+		return err;
+
+	return hci_enable_ext_advertising_sync(hdev, instance);
+}
+
+static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance)
+{
+	int err;
+
+	if (ext_adv_capable(hdev))
+		return hci_start_ext_adv_sync(hdev, instance);
+
+	err = hci_update_adv_data_sync(hdev, instance);
+	if (err)
+		return err;
+
+	err = hci_update_scan_rsp_data_sync(hdev, instance);
+	if (err)
+		return err;
+
+	return hci_enable_advertising_sync(hdev);
+}
+
+int hci_enable_advertising_sync(struct hci_dev *hdev)
+{
+	struct adv_info *adv_instance;
+	struct hci_cp_le_set_adv_param cp;
+	u8 own_addr_type, enable = 0x01;
+	bool connectable;
+	u16 adv_min_interval, adv_max_interval;
+	u32 flags;
+	u8 status;
+
+	flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
+	adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
+
+	/* If the "connectable" instance flag was not set, then choose between
+	 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
+	 */
+	connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
+		      mgmt_get_connectable(hdev);
+
+	if (!is_advertising_allowed(hdev, connectable))
+		return -EINVAL;
+
+	if (hci_dev_test_flag(hdev, HCI_LE_ADV)) {
+		status = hci_disable_advertising_sync(hdev);
+		if (status)
+			return status;
+	}
+
+	/* Clear the HCI_LE_ADV bit temporarily so that the
+	 * hci_update_random_address knows that it's safe to go ahead
+	 * and write a new random address. The flag will be set back on
+	 * as soon as the SET_ADV_ENABLE HCI command completes.
+	 */
+	hci_dev_clear_flag(hdev, HCI_LE_ADV);
+
+	/* Set require_privacy to true only when non-connectable
+	 * advertising is used. In that case it is fine to use a
+	 * non-resolvable private address.
+	 */
+	status = hci_update_random_address_sync(hdev, !connectable,
+						adv_use_rpa(hdev, flags),
+						&own_addr_type);
+	if (status)
+		return status;
+
+	memset(&cp, 0, sizeof(cp));
+
+	if (adv_instance) {
+		adv_min_interval = adv_instance->min_interval;
+		adv_max_interval = adv_instance->max_interval;
+	} else {
+		adv_min_interval = hdev->le_adv_min_interval;
+		adv_max_interval = hdev->le_adv_max_interval;
+	}
+
+	if (connectable) {
+		cp.type = LE_ADV_IND;
+	} else {
+		if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance))
+			cp.type = LE_ADV_SCAN_IND;
+		else
+			cp.type = LE_ADV_NONCONN_IND;
+
+		if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
+		    hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
+			adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
+			adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
+		}
+	}
+
+	cp.min_interval = cpu_to_le16(adv_min_interval);
+	cp.max_interval = cpu_to_le16(adv_max_interval);
+	cp.own_address_type = own_addr_type;
+	cp.channel_map = hdev->le_adv_channel_map;
+
+	status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
+				       sizeof(cp), &cp, HCI_CMD_TIMEOUT);
+	if (status)
+		return status;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
+				     sizeof(enable), &enable, HCI_CMD_TIMEOUT);
+}
+
+static int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance,
+					    struct sock *sk)
+{
+	int err;
+
+	if (!ext_adv_capable(hdev))
+		return 0;
+
+	err = hci_disable_ext_adv_instance_sync(hdev, instance);
+	if (err)
+		return err;
+
+	/* If request specifies an instance that doesn't exist, fail */
+	if (instance > 0 && !hci_find_adv_instance(hdev, instance))
+		return -EINVAL;
+
+	return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET,
+					sizeof(instance), &instance, 0,
+					HCI_CMD_TIMEOUT, sk);
+}
+
+static void cancel_adv_timeout(struct hci_dev *hdev)
+{
+	if (hdev->adv_instance_timeout) {
+		hdev->adv_instance_timeout = 0;
+		cancel_delayed_work(&hdev->adv_instance_expire);
+	}
+}
+
+static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct {
+		struct hci_cp_le_set_ext_adv_data cp;
+		u8 data[HCI_MAX_EXT_AD_LENGTH];
+	} pdu;
+	u8 len;
+
+	memset(&pdu, 0, sizeof(pdu));
+
+	len = eir_create_adv_data(hdev, instance, pdu.data);
+
+	/* There's nothing to do if the data hasn't changed */
+	if (hdev->adv_data_len == len &&
+	    memcmp(pdu.data, hdev->adv_data, len) == 0)
+		return 0;
+
+	memcpy(hdev->adv_data, pdu.data, len);
+	hdev->adv_data_len = len;
+
+	pdu.cp.length = len;
+	pdu.cp.handle = instance;
+	pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
+	pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
+				     sizeof(pdu.cp) + len, &pdu.cp,
+				     HCI_CMD_TIMEOUT);
+}
+
+static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	struct hci_cp_le_set_adv_data cp;
+	u8 len;
+
+	memset(&cp, 0, sizeof(cp));
+
+	len = eir_create_adv_data(hdev, instance, cp.data);
+
+	/* There's nothing to do if the data hasn't changed */
+	if (hdev->adv_data_len == len &&
+	    memcmp(cp.data, hdev->adv_data, len) == 0)
+		return 0;
+
+	memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
+	hdev->adv_data_len = len;
+
+	cp.length = len;
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA,
+				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
+}
+
+int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance)
+{
+	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
+		return 0;
+
+	if (ext_adv_capable(hdev))
+		return hci_set_ext_adv_data_sync(hdev, instance);
+
+	return hci_set_adv_data_sync(hdev, instance);
+}
+
+int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
+				   bool force)
+{
+	struct adv_info *adv = NULL;
+	u16 timeout;
+
+	if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
+	    list_empty(&hdev->adv_instances))
+		return -EPERM;
+
+	if (hdev->adv_instance_timeout)
+		return -EBUSY;
+
+	adv = hci_find_adv_instance(hdev, instance);
+	if (!adv)
+		return -ENOENT;
+
+	/* A zero timeout means unlimited advertising. As long as there is
+	 * only one instance, duration should be ignored. We still set a timeout
+	 * in case further instances are being added later on.
+	 *
+	 * If the remaining lifetime of the instance is more than the duration
+	 * then the timeout corresponds to the duration, otherwise it will be
+	 * reduced to the remaining instance lifetime.
+	 */
+	if (adv->timeout == 0 || adv->duration <= adv->remaining_time)
+		timeout = adv->duration;
+	else
+		timeout = adv->remaining_time;
+
+	/* The remaining time is being reduced unless the instance is being
+	 * advertised without time limit.
+	 */
+	if (adv->timeout)
+		adv->remaining_time = adv->remaining_time - timeout;
+
+	/* Only use work for scheduling instances with legacy advertising */
+	if (!ext_adv_capable(hdev)) {
+		hdev->adv_instance_timeout = timeout;
+		queue_delayed_work(hdev->req_workqueue,
+				   &hdev->adv_instance_expire,
+				   msecs_to_jiffies(timeout * 1000));
+	}
+
+	/* If we're just re-scheduling the same instance again then do not
+	 * execute any HCI commands. This happens when a single instance is
+	 * being advertised.
+	 */
+	if (!force && hdev->cur_adv_instance == instance &&
+	    hci_dev_test_flag(hdev, HCI_LE_ADV))
+		return 0;
+
+	hdev->cur_adv_instance = instance;
+
+	return hci_start_adv_sync(hdev, instance);
+}
+
+static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk)
+{
+	int err;
+
+	if (!ext_adv_capable(hdev))
+		return 0;
+
+	/* Disable instance 0x00 to disable all instances */
+	err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
+	if (err)
+		return err;
+
+	return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS,
+					0, NULL, 0, HCI_CMD_TIMEOUT, sk);
+}
+
+static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
+{
+	struct adv_info *adv, *n;
+
+	if (ext_adv_capable(hdev))
+		/* Remove all existing sets */
+		return hci_clear_adv_sets_sync(hdev, sk);
+
+	/* This is safe as long as there is no command send while the lock is
+	 * held.
+	 */
+	hci_dev_lock(hdev);
+
+	/* Cleanup non-ext instances */
+	list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
+		u8 instance = adv->instance;
+		int err;
+
+		if (!(force || adv->timeout))
+			continue;
+
+		err = hci_remove_adv_instance(hdev, instance);
+		if (!err)
+			mgmt_advertising_removed(sk, hdev, instance);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
+			       struct sock *sk)
+{
+	int err;
+
+	/* If we use extended advertising, instance has to be removed first. */
+	if (ext_adv_capable(hdev))
+		return hci_remove_ext_adv_instance_sync(hdev, instance, sk);
+
+	/* This is safe as long as there is no command send while the lock is
+	 * held.
+	 */
+	hci_dev_lock(hdev);
+
+	err = hci_remove_adv_instance(hdev, instance);
+	if (!err)
+		mgmt_advertising_removed(sk, hdev, instance);
+
+	hci_dev_unlock(hdev);
+
+	return err;
+}
+
+/* For a single instance:
+ * - force == true: The instance will be removed even when its remaining
+ *   lifetime is not zero.
+ * - force == false: the instance will be deactivated but kept stored unless
+ *   the remaining lifetime is zero.
+ *
+ * For instance == 0x00:
+ * - force == true: All instances will be removed regardless of their timeout
+ *   setting.
+ * - force == false: Only instances that have a timeout will be removed.
+ */
+int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
+				u8 instance, bool force)
+{
+	struct adv_info *next = NULL;
+	int err;
+
+	/* Cancel any timeout concerning the removed instance(s). */
+	if (!instance || hdev->cur_adv_instance == instance)
+		cancel_adv_timeout(hdev);
+
+	/* Get the next instance to advertise BEFORE we remove
+	 * the current one. This can be the same instance again
+	 * if there is only one instance.
+	 */
+	if (hdev->cur_adv_instance == instance)
+		next = hci_get_next_instance(hdev, instance);
+
+	if (!instance) {
+		err = hci_clear_adv_sync(hdev, sk, force);
+		if (err)
+			return err;
+	} else {
+		struct adv_info *adv = hci_find_adv_instance(hdev, instance);
+
+		if (force || (adv && adv->timeout && !adv->remaining_time)) {
+			/* Don't advertise a removed instance. */
+			if (next && next->instance == instance)
+				next = NULL;
+
+			err = hci_remove_adv_sync(hdev, instance, sk);
+			if (err)
+				return err;
+		}
+	}
+
+	if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
+		return 0;
+
+	if (next && !ext_adv_capable(hdev))
+		hci_schedule_adv_instance_sync(hdev, next->instance, false);
+
+	return 0;
+}
+
+int hci_disable_advertising_sync(struct hci_dev *hdev)
+{
+	u8 enable = 0x00;
+
+	if (ext_adv_capable(hdev))
+		return hci_disable_ext_adv_instance_sync(hdev, 0x00);
+
+	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
+				     sizeof(enable), &enable, HCI_CMD_TIMEOUT);
+}