diff --git a/net/Kconfig b/net/Kconfig
index 2fc8e77..5b22278 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -220,6 +220,7 @@
 menu "Wireless"
 
 source "net/wireless/Kconfig"
+source "net/mac80211/Kconfig"
 source "net/ieee80211/Kconfig"
 
 endmenu
diff --git a/net/Makefile b/net/Makefile
index 6b74d41..9fdb60c 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -45,6 +45,8 @@
 obj-$(CONFIG_VLAN_8021Q)	+= 8021q/
 obj-$(CONFIG_IP_DCCP)		+= dccp/
 obj-$(CONFIG_IP_SCTP)		+= sctp/
+obj-y				+= wireless/
+obj-$(CONFIG_MAC80211)		+= mac80211/
 obj-$(CONFIG_IEEE80211)		+= ieee80211/
 obj-$(CONFIG_TIPC)		+= tipc/
 obj-$(CONFIG_NETLABEL)		+= netlabel/
@@ -53,5 +55,3 @@
 ifeq ($(CONFIG_NET),y)
 obj-$(CONFIG_SYSCTL)		+= sysctl_net.o
 endif
-
-obj-y				+= wireless/
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
new file mode 100644
index 0000000..d761b53
--- /dev/null
+++ b/net/mac80211/Kconfig
@@ -0,0 +1,69 @@
+config MAC80211
+	tristate "Generic IEEE 802.11 Networking Stack (mac80211)"
+	depends on EXPERIMENTAL
+	select CRYPTO
+	select CRYPTO_ECB
+	select CRYPTO_ARC4
+	select CRYPTO_AES
+	select CRC32
+	select WIRELESS_EXT
+	select CFG80211
+	select NET_SCH_FIFO
+	---help---
+	This option enables the hardware independent IEEE 802.11
+	networking stack.
+
+config MAC80211_LEDS
+	bool "Enable LED triggers"
+	depends on MAC80211 && LEDS_TRIGGERS
+	---help---
+	This option enables a few LED triggers for different
+	packet receive/transmit events.
+
+config MAC80211_DEBUG
+	bool "Enable debugging output"
+	depends on MAC80211
+	---help---
+	  This option will enable debug tracing output for the
+	  ieee80211 network stack.
+
+	  If you are not trying to debug or develop the ieee80211
+	  subsystem, you most likely want to say N here.
+
+config MAC80211_VERBOSE_DEBUG
+	bool "Verbose debugging output"
+	depends on MAC80211_DEBUG
+
+config MAC80211_LOWTX_FRAME_DUMP
+	bool "Debug frame dumping"
+	depends on MAC80211_DEBUG
+	---help---
+	  Selecting this option will cause the stack to
+	  print a message for each frame that is handed
+	  to the lowlevel driver for transmission. This
+	  message includes all MAC addresses and the
+	  frame control field.
+
+	  If unsure, say N and insert the debugging code
+	  you require into the driver you are debugging.
+
+config TKIP_DEBUG
+	bool "TKIP debugging"
+	depends on MAC80211_DEBUG
+
+config MAC80211_DEBUG_COUNTERS
+	bool "Extra statistics for TX/RX debugging"
+	depends on MAC80211_DEBUG
+
+config MAC80211_IBSS_DEBUG
+	bool "Support for IBSS testing"
+	depends on MAC80211_DEBUG
+	---help---
+	  Say Y here if you intend to debug the IBSS code.
+
+config MAC80211_VERBOSE_PS_DEBUG
+	bool "Verbose powersave mode debugging"
+	depends on MAC80211_DEBUG
+	---help---
+	  Say Y here to print out verbose powersave
+	  mode debug messages.
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
new file mode 100644
index 0000000..79dea99
--- /dev/null
+++ b/net/mac80211/Makefile
@@ -0,0 +1,19 @@
+obj-$(CONFIG_MAC80211) += mac80211.o rc80211_simple.o
+
+mac80211-objs-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o
+
+mac80211-objs := \
+	ieee80211.o \
+	ieee80211_ioctl.o \
+	sta_info.o \
+	wep.o \
+	wpa.o \
+	ieee80211_sta.o \
+	ieee80211_iface.o \
+	ieee80211_rate.o \
+	michael.o \
+	tkip.o \
+	aes_ccm.o \
+	wme.o \
+	ieee80211_cfg.o \
+	$(mac80211-objs-y)
diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
new file mode 100644
index 0000000..e55569b
--- /dev/null
+++ b/net/mac80211/aes_ccm.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <linux/err.h>
+#include <asm/scatterlist.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_key.h"
+#include "aes_ccm.h"
+
+
+static void ieee80211_aes_encrypt(struct crypto_cipher *tfm,
+				  const u8 pt[16], u8 ct[16])
+{
+	crypto_cipher_encrypt_one(tfm, ct, pt);
+}
+
+
+static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
+				   u8 *b, u8 *s_0, u8 *a)
+{
+	int i;
+
+	ieee80211_aes_encrypt(tfm, b_0, b);
+
+	/* Extra Authenticate-only data (always two AES blocks) */
+	for (i = 0; i < AES_BLOCK_LEN; i++)
+		aad[i] ^= b[i];
+	ieee80211_aes_encrypt(tfm, aad, b);
+
+	aad += AES_BLOCK_LEN;
+
+	for (i = 0; i < AES_BLOCK_LEN; i++)
+		aad[i] ^= b[i];
+	ieee80211_aes_encrypt(tfm, aad, a);
+
+	/* Mask out bits from auth-only-b_0 */
+	b_0[0] &= 0x07;
+
+	/* S_0 is used to encrypt T (= MIC) */
+	b_0[14] = 0;
+	b_0[15] = 0;
+	ieee80211_aes_encrypt(tfm, b_0, s_0);
+}
+
+
+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
+			       u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+			       u8 *cdata, u8 *mic)
+{
+	int i, j, last_len, num_blocks;
+	u8 *pos, *cpos, *b, *s_0, *e;
+
+	b = scratch;
+	s_0 = scratch + AES_BLOCK_LEN;
+	e = scratch + 2 * AES_BLOCK_LEN;
+
+	num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+	last_len = data_len % AES_BLOCK_LEN;
+	aes_ccm_prepare(tfm, b_0, aad, b, s_0, b);
+
+	/* Process payload blocks */
+	pos = data;
+	cpos = cdata;
+	for (j = 1; j <= num_blocks; j++) {
+		int blen = (j == num_blocks && last_len) ?
+			last_len : AES_BLOCK_LEN;
+
+		/* Authentication followed by encryption */
+		for (i = 0; i < blen; i++)
+			b[i] ^= pos[i];
+		ieee80211_aes_encrypt(tfm, b, b);
+
+		b_0[14] = (j >> 8) & 0xff;
+		b_0[15] = j & 0xff;
+		ieee80211_aes_encrypt(tfm, b_0, e);
+		for (i = 0; i < blen; i++)
+			*cpos++ = *pos++ ^ e[i];
+	}
+
+	for (i = 0; i < CCMP_MIC_LEN; i++)
+		mic[i] = b[i] ^ s_0[i];
+}
+
+
+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
+			      u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
+			      u8 *mic, u8 *data)
+{
+	int i, j, last_len, num_blocks;
+	u8 *pos, *cpos, *b, *s_0, *a;
+
+	b = scratch;
+	s_0 = scratch + AES_BLOCK_LEN;
+	a = scratch + 2 * AES_BLOCK_LEN;
+
+	num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+	last_len = data_len % AES_BLOCK_LEN;
+	aes_ccm_prepare(tfm, b_0, aad, b, s_0, a);
+
+	/* Process payload blocks */
+	cpos = cdata;
+	pos = data;
+	for (j = 1; j <= num_blocks; j++) {
+		int blen = (j == num_blocks && last_len) ?
+			last_len : AES_BLOCK_LEN;
+
+		/* Decryption followed by authentication */
+		b_0[14] = (j >> 8) & 0xff;
+		b_0[15] = j & 0xff;
+		ieee80211_aes_encrypt(tfm, b_0, b);
+		for (i = 0; i < blen; i++) {
+			*pos = *cpos++ ^ b[i];
+			a[i] ^= *pos++;
+		}
+
+		ieee80211_aes_encrypt(tfm, a, a);
+	}
+
+	for (i = 0; i < CCMP_MIC_LEN; i++) {
+		if ((mic[i] ^ s_0[i]) != a[i])
+			return -1;
+	}
+
+	return 0;
+}
+
+
+struct crypto_cipher * ieee80211_aes_key_setup_encrypt(const u8 key[])
+{
+	struct crypto_cipher *tfm;
+
+	tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm))
+		return NULL;
+
+	crypto_cipher_setkey(tfm, key, ALG_CCMP_KEY_LEN);
+
+	return tfm;
+}
+
+
+void ieee80211_aes_key_free(struct crypto_cipher *tfm)
+{
+	if (tfm)
+		crypto_free_cipher(tfm);
+}
diff --git a/net/mac80211/aes_ccm.h b/net/mac80211/aes_ccm.h
new file mode 100644
index 0000000..885f190
--- /dev/null
+++ b/net/mac80211/aes_ccm.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef AES_CCM_H
+#define AES_CCM_H
+
+#include <linux/crypto.h>
+
+#define AES_BLOCK_LEN 16
+
+struct crypto_cipher * ieee80211_aes_key_setup_encrypt(const u8 key[]);
+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
+			       u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+			       u8 *cdata, u8 *mic);
+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
+			      u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
+			      u8 *mic, u8 *data);
+void ieee80211_aes_key_free(struct crypto_cipher *tfm);
+
+#endif /* AES_CCM_H */
diff --git a/net/mac80211/hostapd_ioctl.h b/net/mac80211/hostapd_ioctl.h
new file mode 100644
index 0000000..34fa128
--- /dev/null
+++ b/net/mac80211/hostapd_ioctl.h
@@ -0,0 +1,108 @@
+/*
+ * Host AP (software wireless LAN access point) user space daemon for
+ * Host AP kernel driver
+ * Copyright 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef HOSTAPD_IOCTL_H
+#define HOSTAPD_IOCTL_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#endif /* __KERNEL__ */
+
+#define PRISM2_IOCTL_PRISM2_PARAM (SIOCIWFIRSTPRIV + 0)
+#define PRISM2_IOCTL_GET_PRISM2_PARAM (SIOCIWFIRSTPRIV + 1)
+#define PRISM2_IOCTL_HOSTAPD (SIOCIWFIRSTPRIV + 3)
+
+/* PRISM2_IOCTL_PRISM2_PARAM ioctl() subtypes:
+ * This table is no longer added to, the whole sub-ioctl
+ * mess shall be deleted completely. */
+enum {
+	PRISM2_PARAM_IEEE_802_1X = 23,
+	PRISM2_PARAM_ANTSEL_TX = 24,
+	PRISM2_PARAM_ANTSEL_RX = 25,
+
+	/* Instant802 additions */
+	PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES = 1001,
+	PRISM2_PARAM_DROP_UNENCRYPTED = 1002,
+	PRISM2_PARAM_PREAMBLE = 1003,
+	PRISM2_PARAM_SHORT_SLOT_TIME = 1006,
+	PRISM2_PARAM_NEXT_MODE = 1008,
+	PRISM2_PARAM_CLEAR_KEYS = 1009,
+	PRISM2_PARAM_RADIO_ENABLED = 1010,
+	PRISM2_PARAM_ANTENNA_MODE = 1013,
+	PRISM2_PARAM_STAT_TIME = 1016,
+	PRISM2_PARAM_STA_ANTENNA_SEL = 1017,
+	PRISM2_PARAM_FORCE_UNICAST_RATE = 1018,
+	PRISM2_PARAM_RATE_CTRL_NUM_UP = 1019,
+	PRISM2_PARAM_RATE_CTRL_NUM_DOWN = 1020,
+	PRISM2_PARAM_MAX_RATECTRL_RATE = 1021,
+	PRISM2_PARAM_TX_POWER_REDUCTION = 1022,
+	PRISM2_PARAM_KEY_TX_RX_THRESHOLD = 1024,
+	PRISM2_PARAM_DEFAULT_WEP_ONLY = 1026,
+	PRISM2_PARAM_WIFI_WME_NOACK_TEST = 1033,
+	PRISM2_PARAM_SCAN_FLAGS = 1035,
+	PRISM2_PARAM_HW_MODES = 1036,
+	PRISM2_PARAM_CREATE_IBSS = 1037,
+	PRISM2_PARAM_WMM_ENABLED = 1038,
+	PRISM2_PARAM_MIXED_CELL = 1039,
+	PRISM2_PARAM_RADAR_DETECT = 1043,
+	PRISM2_PARAM_SPECTRUM_MGMT = 1044,
+};
+
+enum {
+	IEEE80211_KEY_MGMT_NONE = 0,
+	IEEE80211_KEY_MGMT_IEEE8021X = 1,
+	IEEE80211_KEY_MGMT_WPA_PSK = 2,
+	IEEE80211_KEY_MGMT_WPA_EAP = 3,
+};
+
+
+/* Data structures used for get_hw_features ioctl */
+struct hostapd_ioctl_hw_modes_hdr {
+	int mode;
+	int num_channels;
+	int num_rates;
+};
+
+struct ieee80211_channel_data {
+	short chan; /* channel number (IEEE 802.11) */
+	short freq; /* frequency in MHz */
+	int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
+};
+
+struct ieee80211_rate_data {
+	int rate; /* rate in 100 kbps */
+	int flags; /* IEEE80211_RATE_ flags */
+};
+
+
+/* ADD_IF, REMOVE_IF, and UPDATE_IF 'type' argument */
+enum {
+	HOSTAP_IF_WDS = 1, HOSTAP_IF_VLAN = 2, HOSTAP_IF_BSS = 3,
+	HOSTAP_IF_STA = 4
+};
+
+struct hostapd_if_wds {
+	u8 remote_addr[ETH_ALEN];
+};
+
+struct hostapd_if_vlan {
+	u8 id;
+};
+
+struct hostapd_if_bss {
+	u8 bssid[ETH_ALEN];
+};
+
+struct hostapd_if_sta {
+};
+
+#endif /* HOSTAPD_IOCTL_H */
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
new file mode 100644
index 0000000..48a832d
--- /dev/null
+++ b/net/mac80211/ieee80211.c
@@ -0,0 +1,4970 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <linux/compiler.h>
+#include <linux/bitmap.h>
+#include <net/cfg80211.h>
+
+#include "ieee80211_common.h"
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "wep.h"
+#include "wpa.h"
+#include "tkip.h"
+#include "wme.h"
+#include "aes_ccm.h"
+#include "ieee80211_led.h"
+#include "ieee80211_cfg.h"
+
+/* privid for wiphys to determine whether they belong to us or not */
+void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
+
+/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+static const unsigned char rfc1042_header[] =
+	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static const unsigned char bridge_tunnel_header[] =
+	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+
+/* No encapsulation header if EtherType < 0x600 (=length) */
+static const unsigned char eapol_header[] =
+	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e };
+
+
+static inline void ieee80211_include_sequence(struct ieee80211_sub_if_data *sdata,
+					      struct ieee80211_hdr *hdr)
+{
+	/* Set the sequence number for this frame. */
+	hdr->seq_ctrl = cpu_to_le16(sdata->sequence);
+
+	/* Increase the sequence number. */
+	sdata->sequence = (sdata->sequence + 0x10) & IEEE80211_SCTL_SEQ;
+}
+
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+			const struct ieee80211_key *data)
+{
+	struct ieee80211_key_conf *conf;
+
+	conf = kmalloc(sizeof(*conf) + data->keylen, GFP_ATOMIC);
+	if (!conf)
+		return NULL;
+
+	conf->hw_key_idx = data->hw_key_idx;
+	conf->alg = data->alg;
+	conf->keylen = data->keylen;
+	conf->flags = 0;
+	if (data->force_sw_encrypt)
+		conf->flags |= IEEE80211_KEY_FORCE_SW_ENCRYPT;
+	conf->keyidx = data->keyidx;
+	if (data->default_tx_key)
+		conf->flags |= IEEE80211_KEY_DEFAULT_TX_KEY;
+	if (local->default_wep_only)
+		conf->flags |= IEEE80211_KEY_DEFAULT_WEP_ONLY;
+	memcpy(conf->key, data->key, data->keylen);
+
+	return conf;
+}
+
+struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
+					  int idx, size_t key_len, gfp_t flags)
+{
+	struct ieee80211_key *key;
+
+	key = kzalloc(sizeof(struct ieee80211_key) + key_len, flags);
+	if (!key)
+		return NULL;
+	kref_init(&key->kref);
+	return key;
+}
+
+static void ieee80211_key_release(struct kref *kref)
+{
+	struct ieee80211_key *key;
+
+	key = container_of(kref, struct ieee80211_key, kref);
+	if (key->alg == ALG_CCMP)
+		ieee80211_aes_key_free(key->u.ccmp.tfm);
+	kfree(key);
+}
+
+void ieee80211_key_free(struct ieee80211_key *key)
+{
+	if (key)
+		kref_put(&key->kref, ieee80211_key_release);
+}
+
+static int rate_list_match(const int *rate_list, int rate)
+{
+	int i;
+
+	if (!rate_list)
+		return 0;
+
+	for (i = 0; rate_list[i] >= 0; i++)
+		if (rate_list[i] == rate)
+			return 1;
+
+	return 0;
+}
+
+
+void ieee80211_prepare_rates(struct ieee80211_local *local,
+			     struct ieee80211_hw_mode *mode)
+{
+	int i;
+
+	for (i = 0; i < mode->num_rates; i++) {
+		struct ieee80211_rate *rate = &mode->rates[i];
+
+		rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
+				 IEEE80211_RATE_BASIC);
+
+		if (local->supp_rates[mode->mode]) {
+			if (!rate_list_match(local->supp_rates[mode->mode],
+					     rate->rate))
+				continue;
+		}
+
+		rate->flags |= IEEE80211_RATE_SUPPORTED;
+
+		/* Use configured basic rate set if it is available. If not,
+		 * use defaults that are sane for most cases. */
+		if (local->basic_rates[mode->mode]) {
+			if (rate_list_match(local->basic_rates[mode->mode],
+					    rate->rate))
+				rate->flags |= IEEE80211_RATE_BASIC;
+		} else switch (mode->mode) {
+		case MODE_IEEE80211A:
+			if (rate->rate == 60 || rate->rate == 120 ||
+			    rate->rate == 240)
+				rate->flags |= IEEE80211_RATE_BASIC;
+			break;
+		case MODE_IEEE80211B:
+			if (rate->rate == 10 || rate->rate == 20)
+				rate->flags |= IEEE80211_RATE_BASIC;
+			break;
+		case MODE_ATHEROS_TURBO:
+			if (rate->rate == 120 || rate->rate == 240 ||
+			    rate->rate == 480)
+				rate->flags |= IEEE80211_RATE_BASIC;
+			break;
+		case MODE_IEEE80211G:
+			if (rate->rate == 10 || rate->rate == 20 ||
+			    rate->rate == 55 || rate->rate == 110)
+				rate->flags |= IEEE80211_RATE_BASIC;
+			break;
+		}
+
+		/* Set ERP and MANDATORY flags based on phymode */
+		switch (mode->mode) {
+		case MODE_IEEE80211A:
+			if (rate->rate == 60 || rate->rate == 120 ||
+			    rate->rate == 240)
+				rate->flags |= IEEE80211_RATE_MANDATORY;
+			break;
+		case MODE_IEEE80211B:
+			if (rate->rate == 10)
+				rate->flags |= IEEE80211_RATE_MANDATORY;
+			break;
+		case MODE_ATHEROS_TURBO:
+			break;
+		case MODE_IEEE80211G:
+			if (rate->rate == 10 || rate->rate == 20 ||
+			    rate->rate == 55 || rate->rate == 110 ||
+			    rate->rate == 60 || rate->rate == 120 ||
+			    rate->rate == 240)
+				rate->flags |= IEEE80211_RATE_MANDATORY;
+			break;
+		}
+		if (ieee80211_is_erp_rate(mode->mode, rate->rate))
+			rate->flags |= IEEE80211_RATE_ERP;
+	}
+}
+
+
+static void ieee80211_key_threshold_notify(struct net_device *dev,
+					   struct ieee80211_key *key,
+					   struct sta_info *sta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	struct ieee80211_msg_key_notification *msg;
+
+	/* if no one will get it anyway, don't even allocate it.
+	 * unlikely because this is only relevant for APs
+	 * where the device must be open... */
+	if (unlikely(!local->apdev))
+		return;
+
+	skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+			    sizeof(struct ieee80211_msg_key_notification));
+	if (!skb)
+		return;
+
+	skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+	msg = (struct ieee80211_msg_key_notification *)
+		skb_put(skb, sizeof(struct ieee80211_msg_key_notification));
+	msg->tx_rx_count = key->tx_rx_count;
+	memcpy(msg->ifname, dev->name, IFNAMSIZ);
+	if (sta)
+		memcpy(msg->addr, sta->addr, ETH_ALEN);
+	else
+		memset(msg->addr, 0xff, ETH_ALEN);
+
+	key->tx_rx_count = 0;
+
+	ieee80211_rx_mgmt(local, skb, NULL,
+			  ieee80211_msg_key_threshold_notification);
+}
+
+
+static u8 * ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+{
+	u16 fc;
+
+	if (len < 24)
+		return NULL;
+
+	fc = le16_to_cpu(hdr->frame_control);
+
+	switch (fc & IEEE80211_FCTL_FTYPE) {
+	case IEEE80211_FTYPE_DATA:
+		switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+		case IEEE80211_FCTL_TODS:
+			return hdr->addr1;
+		case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+			return NULL;
+		case IEEE80211_FCTL_FROMDS:
+			return hdr->addr2;
+		case 0:
+			return hdr->addr3;
+		}
+		break;
+	case IEEE80211_FTYPE_MGMT:
+		return hdr->addr3;
+	case IEEE80211_FTYPE_CTL:
+		if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
+			return hdr->addr1;
+		else
+			return NULL;
+	}
+
+	return NULL;
+}
+
+int ieee80211_get_hdrlen(u16 fc)
+{
+	int hdrlen = 24;
+
+	switch (fc & IEEE80211_FCTL_FTYPE) {
+	case IEEE80211_FTYPE_DATA:
+		if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
+			hdrlen = 30; /* Addr4 */
+		/*
+		 * The QoS Control field is two bytes and its presence is
+		 * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
+		 * hdrlen if that bit is set.
+		 * This works by masking out the bit and shifting it to
+		 * bit position 1 so the result has the value 0 or 2.
+		 */
+		hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
+				>> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
+		break;
+	case IEEE80211_FTYPE_CTL:
+		/*
+		 * ACK and CTS are 10 bytes, all others 16. To see how
+		 * to get this condition consider
+		 *   subtype mask:   0b0000000011110000 (0x00F0)
+		 *   ACK subtype:    0b0000000011010000 (0x00D0)
+		 *   CTS subtype:    0b0000000011000000 (0x00C0)
+		 *   bits that matter:         ^^^      (0x00E0)
+		 *   value of those: 0b0000000011000000 (0x00C0)
+		 */
+		if ((fc & 0xE0) == 0xC0)
+			hdrlen = 10;
+		else
+			hdrlen = 16;
+		break;
+	}
+
+	return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen);
+
+int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
+{
+	const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
+	int hdrlen;
+
+	if (unlikely(skb->len < 10))
+		return 0;
+	hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+	if (unlikely(hdrlen > skb->len))
+		return 0;
+	return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+
+static int ieee80211_get_radiotap_len(struct sk_buff *skb)
+{
+	struct ieee80211_radiotap_header *hdr =
+		(struct ieee80211_radiotap_header *) skb->data;
+
+	return le16_to_cpu(hdr->it_len);
+}
+
+#ifdef CONFIG_MAC80211_LOWTX_FRAME_DUMP
+static void ieee80211_dump_frame(const char *ifname, const char *title,
+				 const struct sk_buff *skb)
+{
+	const struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+
+	printk(KERN_DEBUG "%s: %s (len=%d)", ifname, title, skb->len);
+	if (skb->len < 4) {
+		printk("\n");
+		return;
+	}
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+	if (hdrlen > skb->len)
+		hdrlen = skb->len;
+	if (hdrlen >= 4)
+		printk(" FC=0x%04x DUR=0x%04x",
+		       fc, le16_to_cpu(hdr->duration_id));
+	if (hdrlen >= 10)
+		printk(" A1=" MAC_FMT, MAC_ARG(hdr->addr1));
+	if (hdrlen >= 16)
+		printk(" A2=" MAC_FMT, MAC_ARG(hdr->addr2));
+	if (hdrlen >= 24)
+		printk(" A3=" MAC_FMT, MAC_ARG(hdr->addr3));
+	if (hdrlen >= 30)
+		printk(" A4=" MAC_FMT, MAC_ARG(hdr->addr4));
+	printk("\n");
+}
+#else /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
+static inline void ieee80211_dump_frame(const char *ifname, const char *title,
+					struct sk_buff *skb)
+{
+}
+#endif /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
+
+
+static int ieee80211_is_eapol(const struct sk_buff *skb)
+{
+	const struct ieee80211_hdr *hdr;
+	u16 fc;
+	int hdrlen;
+
+	if (unlikely(skb->len < 10))
+		return 0;
+
+	hdr = (const struct ieee80211_hdr *) skb->data;
+	fc = le16_to_cpu(hdr->frame_control);
+
+	if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+		return 0;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
+		     memcmp(skb->data + hdrlen, eapol_header,
+			    sizeof(eapol_header)) == 0))
+		return 1;
+
+	return 0;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
+{
+	struct rate_control_extra extra;
+
+	memset(&extra, 0, sizeof(extra));
+	extra.mode = tx->u.tx.mode;
+	extra.mgmt_data = tx->sdata &&
+		tx->sdata->type == IEEE80211_IF_TYPE_MGMT;
+	extra.ethertype = tx->ethertype;
+
+	tx->u.tx.rate = rate_control_get_rate(tx->local, tx->dev, tx->skb,
+					      &extra);
+	if (unlikely(extra.probe != NULL)) {
+		tx->u.tx.control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE;
+		tx->u.tx.probe_last_frag = 1;
+		tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
+		tx->u.tx.rate = extra.probe;
+	} else {
+		tx->u.tx.control->alt_retry_rate = -1;
+	}
+	if (!tx->u.tx.rate)
+		return TXRX_DROP;
+	if (tx->u.tx.mode->mode == MODE_IEEE80211G &&
+	    tx->local->cts_protect_erp_frames && tx->fragmented &&
+	    extra.nonerp) {
+		tx->u.tx.last_frag_rate = tx->u.tx.rate;
+		tx->u.tx.probe_last_frag = extra.probe ? 1 : 0;
+
+		tx->u.tx.rate = extra.nonerp;
+		tx->u.tx.control->rate = extra.nonerp;
+		tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+	} else {
+		tx->u.tx.last_frag_rate = tx->u.tx.rate;
+		tx->u.tx.control->rate = tx->u.tx.rate;
+	}
+	tx->u.tx.control->tx_rate = tx->u.tx.rate->val;
+	if ((tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) &&
+	    tx->local->short_preamble &&
+	    (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
+		tx->u.tx.short_preamble = 1;
+		tx->u.tx.control->tx_rate = tx->u.tx.rate->val2;
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
+{
+	if (tx->sta)
+		tx->u.tx.control->key_idx = tx->sta->key_idx_compression;
+	else
+		tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+
+	if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
+		tx->key = NULL;
+	else if (tx->sta && tx->sta->key)
+		tx->key = tx->sta->key;
+	else if (tx->sdata->default_key)
+		tx->key = tx->sdata->default_key;
+	else if (tx->sdata->drop_unencrypted &&
+		 !(tx->sdata->eapol && ieee80211_is_eapol(tx->skb))) {
+		I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
+		return TXRX_DROP;
+	} else
+		tx->key = NULL;
+
+	if (tx->key) {
+		tx->key->tx_rx_count++;
+		if (unlikely(tx->local->key_tx_rx_threshold &&
+			     tx->key->tx_rx_count >
+			     tx->local->key_tx_rx_threshold)) {
+			ieee80211_key_threshold_notify(tx->dev, tx->key,
+						       tx->sta);
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+	size_t hdrlen, per_fragm, num_fragm, payload_len, left;
+	struct sk_buff **frags, *first, *frag;
+	int i;
+	u16 seq;
+	u8 *pos;
+	int frag_threshold = tx->local->fragmentation_threshold;
+
+	if (!tx->fragmented)
+		return TXRX_CONTINUE;
+
+	first = tx->skb;
+
+	hdrlen = ieee80211_get_hdrlen(tx->fc);
+	payload_len = first->len - hdrlen;
+	per_fragm = frag_threshold - hdrlen - FCS_LEN;
+	num_fragm = (payload_len + per_fragm - 1) / per_fragm;
+
+	frags = kzalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
+	if (!frags)
+		goto fail;
+
+	hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
+	seq = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ;
+	pos = first->data + hdrlen + per_fragm;
+	left = payload_len - per_fragm;
+	for (i = 0; i < num_fragm - 1; i++) {
+		struct ieee80211_hdr *fhdr;
+		size_t copylen;
+
+		if (left <= 0)
+			goto fail;
+
+		/* reserve enough extra head and tail room for possible
+		 * encryption */
+		frag = frags[i] =
+			dev_alloc_skb(tx->local->hw.extra_tx_headroom +
+				      frag_threshold +
+				      IEEE80211_ENCRYPT_HEADROOM +
+				      IEEE80211_ENCRYPT_TAILROOM);
+		if (!frag)
+			goto fail;
+		/* Make sure that all fragments use the same priority so
+		 * that they end up using the same TX queue */
+		frag->priority = first->priority;
+		skb_reserve(frag, tx->local->hw.extra_tx_headroom +
+			IEEE80211_ENCRYPT_HEADROOM);
+		fhdr = (struct ieee80211_hdr *) skb_put(frag, hdrlen);
+		memcpy(fhdr, first->data, hdrlen);
+		if (i == num_fragm - 2)
+			fhdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREFRAGS);
+		fhdr->seq_ctrl = cpu_to_le16(seq | ((i + 1) & IEEE80211_SCTL_FRAG));
+		copylen = left > per_fragm ? per_fragm : left;
+		memcpy(skb_put(frag, copylen), pos, copylen);
+
+		pos += copylen;
+		left -= copylen;
+	}
+	skb_trim(first, hdrlen + per_fragm);
+
+	tx->u.tx.num_extra_frag = num_fragm - 1;
+	tx->u.tx.extra_frag = frags;
+
+	return TXRX_CONTINUE;
+
+ fail:
+	printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name);
+	if (frags) {
+		for (i = 0; i < num_fragm - 1; i++)
+			if (frags[i])
+				dev_kfree_skb(frags[i]);
+		kfree(frags);
+	}
+	I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment);
+	return TXRX_DROP;
+}
+
+
+static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
+{
+	if (tx->key->force_sw_encrypt) {
+		if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
+			return -1;
+	} else {
+		tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+		if (tx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
+			if (ieee80211_wep_add_iv(tx->local, skb, tx->key) ==
+			    NULL)
+				return -1;
+		}
+	}
+	return 0;
+}
+
+
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+
+	hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+	if (tx->u.tx.extra_frag) {
+		struct ieee80211_hdr *fhdr;
+		int i;
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			fhdr = (struct ieee80211_hdr *)
+				tx->u.tx.extra_frag[i]->data;
+			fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+		}
+	}
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_wep_encrypt(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+	u16 fc;
+
+	fc = le16_to_cpu(hdr->frame_control);
+
+	if (!tx->key || tx->key->alg != ALG_WEP ||
+	    ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+	     ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+	      (fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
+		return TXRX_CONTINUE;
+
+	tx->u.tx.control->iv_len = WEP_IV_LEN;
+	tx->u.tx.control->icv_len = WEP_ICV_LEN;
+	ieee80211_tx_set_iswep(tx);
+
+	if (wep_encrypt_skb(tx, tx->skb) < 0) {
+		I802_DEBUG_INC(tx->local->tx_handlers_drop_wep);
+		return TXRX_DROP;
+	}
+
+	if (tx->u.tx.extra_frag) {
+		int i;
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) {
+				I802_DEBUG_INC(tx->local->
+					       tx_handlers_drop_wep);
+				return TXRX_DROP;
+			}
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
+				    int rate, int erp, int short_preamble)
+{
+	int dur;
+
+	/* calculate duration (in microseconds, rounded up to next higher
+	 * integer if it includes a fractional microsecond) to send frame of
+	 * len bytes (does not include FCS) at the given rate. Duration will
+	 * also include SIFS.
+	 *
+	 * rate is in 100 kbps, so divident is multiplied by 10 in the
+	 * DIV_ROUND_UP() operations.
+	 */
+
+	if (local->hw.conf.phymode == MODE_IEEE80211A || erp ||
+	    local->hw.conf.phymode == MODE_ATHEROS_TURBO) {
+		/*
+		 * OFDM:
+		 *
+		 * N_DBPS = DATARATE x 4
+		 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
+		 *	(16 = SIGNAL time, 6 = tail bits)
+		 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
+		 *
+		 * T_SYM = 4 usec
+		 * 802.11a - 17.5.2: aSIFSTime = 16 usec
+		 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
+		 *	signal ext = 6 usec
+		 */
+		/* FIX: Atheros Turbo may have different (shorter) duration? */
+		dur = 16; /* SIFS + signal ext */
+		dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
+		dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+		dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
+					4 * rate); /* T_SYM x N_SYM */
+	} else {
+		/*
+		 * 802.11b or 802.11g with 802.11b compatibility:
+		 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
+		 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
+		 *
+		 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
+		 * aSIFSTime = 10 usec
+		 * aPreambleLength = 144 usec or 72 usec with short preamble
+		 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
+		 */
+		dur = 10; /* aSIFSTime = 10 usec */
+		dur += short_preamble ? (72 + 24) : (144 + 48);
+
+		dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
+	}
+
+	return dur;
+}
+
+
+/* Exported duration function for driver use */
+__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
+					size_t frame_len, int rate)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	u16 dur;
+	int erp;
+
+	erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
+	dur = ieee80211_frame_duration(local, frame_len, rate,
+				       erp, local->short_preamble);
+
+	return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_generic_frame_duration);
+
+
+static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
+			      int next_frag_len)
+{
+	int rate, mrate, erp, dur, i;
+	struct ieee80211_rate *txrate = tx->u.tx.rate;
+	struct ieee80211_local *local = tx->local;
+	struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+
+	erp = txrate->flags & IEEE80211_RATE_ERP;
+
+	/*
+	 * data and mgmt (except PS Poll):
+	 * - during CFP: 32768
+	 * - during contention period:
+	 *   if addr1 is group address: 0
+	 *   if more fragments = 0 and addr1 is individual address: time to
+	 *      transmit one ACK plus SIFS
+	 *   if more fragments = 1 and addr1 is individual address: time to
+	 *      transmit next fragment plus 2 x ACK plus 3 x SIFS
+	 *
+	 * IEEE 802.11, 9.6:
+	 * - control response frame (CTS or ACK) shall be transmitted using the
+	 *   same rate as the immediately previous frame in the frame exchange
+	 *   sequence, if this rate belongs to the PHY mandatory rates, or else
+	 *   at the highest possible rate belonging to the PHY rates in the
+	 *   BSSBasicRateSet
+	 */
+
+	if ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) {
+		/* TODO: These control frames are not currently sent by
+		 * 80211.o, but should they be implemented, this function
+		 * needs to be updated to support duration field calculation.
+		 *
+		 * RTS: time needed to transmit pending data/mgmt frame plus
+		 *    one CTS frame plus one ACK frame plus 3 x SIFS
+		 * CTS: duration of immediately previous RTS minus time
+		 *    required to transmit CTS and its SIFS
+		 * ACK: 0 if immediately previous directed data/mgmt had
+		 *    more=0, with more=1 duration in ACK frame is duration
+		 *    from previous frame minus time needed to transmit ACK
+		 *    and its SIFS
+		 * PS Poll: BIT(15) | BIT(14) | aid
+		 */
+		return 0;
+	}
+
+	/* data/mgmt */
+	if (0 /* FIX: data/mgmt during CFP */)
+		return 32768;
+
+	if (group_addr) /* Group address as the destination - no ACK */
+		return 0;
+
+	/* Individual destination address:
+	 * IEEE 802.11, Ch. 9.6 (after IEEE 802.11g changes)
+	 * CTS and ACK frames shall be transmitted using the highest rate in
+	 * basic rate set that is less than or equal to the rate of the
+	 * immediately previous frame and that is using the same modulation
+	 * (CCK or OFDM). If no basic rate set matches with these requirements,
+	 * the highest mandatory rate of the PHY that is less than or equal to
+	 * the rate of the previous frame is used.
+	 * Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps
+	 */
+	rate = -1;
+	mrate = 10; /* use 1 Mbps if everything fails */
+	for (i = 0; i < mode->num_rates; i++) {
+		struct ieee80211_rate *r = &mode->rates[i];
+		if (r->rate > txrate->rate)
+			break;
+
+		if (IEEE80211_RATE_MODULATION(txrate->flags) !=
+		    IEEE80211_RATE_MODULATION(r->flags))
+			continue;
+
+		if (r->flags & IEEE80211_RATE_BASIC)
+			rate = r->rate;
+		else if (r->flags & IEEE80211_RATE_MANDATORY)
+			mrate = r->rate;
+	}
+	if (rate == -1) {
+		/* No matching basic rate found; use highest suitable mandatory
+		 * PHY rate */
+		rate = mrate;
+	}
+
+	/* Time needed to transmit ACK
+	 * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
+	 * to closest integer */
+
+	dur = ieee80211_frame_duration(local, 10, rate, erp,
+				       local->short_preamble);
+
+	if (next_frag_len) {
+		/* Frame is fragmented: duration increases with time needed to
+		 * transmit next fragment plus ACK and 2 x SIFS. */
+		dur *= 2; /* ACK + SIFS */
+		/* next fragment */
+		dur += ieee80211_frame_duration(local, next_frag_len,
+						txrate->rate, erp,
+						local->short_preamble);
+	}
+
+	return dur;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+	u16 dur;
+	struct ieee80211_tx_control *control = tx->u.tx.control;
+	struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+
+	if (!is_multicast_ether_addr(hdr->addr1)) {
+		if (tx->skb->len + FCS_LEN > tx->local->rts_threshold &&
+		    tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD) {
+			control->flags |= IEEE80211_TXCTL_USE_RTS_CTS;
+			control->retry_limit =
+				tx->local->long_retry_limit;
+		} else {
+			control->retry_limit =
+				tx->local->short_retry_limit;
+		}
+	} else {
+		control->retry_limit = 1;
+	}
+
+	if (tx->fragmented) {
+		/* Do not use multiple retry rates when sending fragmented
+		 * frames.
+		 * TODO: The last fragment could still use multiple retry
+		 * rates. */
+		control->alt_retry_rate = -1;
+	}
+
+	/* Use CTS protection for unicast frames sent using extended rates if
+	 * there are associated non-ERP stations and RTS/CTS is not configured
+	 * for the frame. */
+	if (mode->mode == MODE_IEEE80211G &&
+	    (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
+	    tx->u.tx.unicast &&
+	    tx->local->cts_protect_erp_frames &&
+	    !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
+		control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
+
+	/* Setup duration field for the first fragment of the frame. Duration
+	 * for remaining fragments will be updated when they are being sent
+	 * to low-level driver in ieee80211_tx(). */
+	dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1),
+				 tx->fragmented ? tx->u.tx.extra_frag[0]->len :
+				 0);
+	hdr->duration_id = cpu_to_le16(dur);
+
+	if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
+	    (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+		struct ieee80211_rate *rate;
+
+		/* Do not use multiple retry rates when using RTS/CTS */
+		control->alt_retry_rate = -1;
+
+		/* Use min(data rate, max base rate) as CTS/RTS rate */
+		rate = tx->u.tx.rate;
+		while (rate > mode->rates &&
+		       !(rate->flags & IEEE80211_RATE_BASIC))
+			rate--;
+
+		control->rts_cts_rate = rate->val;
+		control->rts_rate = rate;
+	}
+
+	if (tx->sta) {
+		tx->sta->tx_packets++;
+		tx->sta->tx_fragments++;
+		tx->sta->tx_bytes += tx->skb->len;
+		if (tx->u.tx.extra_frag) {
+			int i;
+			tx->sta->tx_fragments += tx->u.tx.num_extra_frag;
+			for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+				tx->sta->tx_bytes +=
+					tx->u.tx.extra_frag[i]->len;
+			}
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
+{
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	struct sk_buff *skb = tx->skb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+	u32 sta_flags;
+
+	if (unlikely(tx->local->sta_scanning != 0) &&
+	    ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+	     (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
+		return TXRX_DROP;
+
+	if (tx->u.tx.ps_buffered)
+		return TXRX_CONTINUE;
+
+	sta_flags = tx->sta ? tx->sta->flags : 0;
+
+	if (likely(tx->u.tx.unicast)) {
+		if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
+			     tx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+			     (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+			printk(KERN_DEBUG "%s: dropped data frame to not "
+			       "associated station " MAC_FMT "\n",
+			       tx->dev->name, MAC_ARG(hdr->addr1));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+			I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
+			return TXRX_DROP;
+		}
+	} else {
+		if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+			     tx->local->num_sta == 0 &&
+			     !tx->local->allow_broadcast_always &&
+			     tx->sdata->type != IEEE80211_IF_TYPE_IBSS)) {
+			/*
+			 * No associated STAs - no need to send multicast
+			 * frames.
+			 */
+			return TXRX_DROP;
+		}
+		return TXRX_CONTINUE;
+	}
+
+	if (unlikely(!tx->u.tx.mgmt_interface && tx->sdata->ieee802_1x &&
+		     !(sta_flags & WLAN_STA_AUTHORIZED))) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+		printk(KERN_DEBUG "%s: dropped frame to " MAC_FMT
+		       " (unauthorized port)\n", tx->dev->name,
+		       MAC_ARG(hdr->addr1));
+#endif
+		I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
+		return TXRX_DROP;
+	}
+
+	return TXRX_CONTINUE;
+}
+
+static ieee80211_txrx_result
+ieee80211_tx_h_sequence(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+
+	if (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)) >= 24)
+		ieee80211_include_sequence(tx->sdata, hdr);
+
+	return TXRX_CONTINUE;
+}
+
+/* This function is called whenever the AP is about to exceed the maximum limit
+ * of buffered frames for power saving STAs. This situation should not really
+ * happen often during normal operation, so dropping the oldest buffered packet
+ * from each queue should be OK to make some room for new frames. */
+static void purge_old_ps_buffers(struct ieee80211_local *local)
+{
+	int total = 0, purged = 0;
+	struct sk_buff *skb;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		struct ieee80211_if_ap *ap;
+		if (sdata->dev == local->mdev ||
+		    sdata->type != IEEE80211_IF_TYPE_AP)
+			continue;
+		ap = &sdata->u.ap;
+		skb = skb_dequeue(&ap->ps_bc_buf);
+		if (skb) {
+			purged++;
+			dev_kfree_skb(skb);
+		}
+		total += skb_queue_len(&ap->ps_bc_buf);
+	}
+	read_unlock(&local->sub_if_lock);
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		skb = skb_dequeue(&sta->ps_tx_buf);
+		if (skb) {
+			purged++;
+			dev_kfree_skb(skb);
+		}
+		total += skb_queue_len(&sta->ps_tx_buf);
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	local->total_ps_buffered = total;
+	printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
+	       local->mdev->name, purged);
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+	/* broadcast/multicast frame */
+	/* If any of the associated stations is in power save mode,
+	 * the frame is buffered to be sent after DTIM beacon frame */
+	if ((tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) &&
+	    tx->sdata->type != IEEE80211_IF_TYPE_WDS &&
+	    tx->sdata->bss && atomic_read(&tx->sdata->bss->num_sta_ps) &&
+	    !(tx->fc & IEEE80211_FCTL_ORDER)) {
+		if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+			purge_old_ps_buffers(tx->local);
+		if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >=
+		    AP_MAX_BC_BUFFER) {
+			if (net_ratelimit()) {
+				printk(KERN_DEBUG "%s: BC TX buffer full - "
+				       "dropping the oldest frame\n",
+				       tx->dev->name);
+			}
+			dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
+		} else
+			tx->local->total_ps_buffered++;
+		skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
+		return TXRX_QUEUED;
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+	struct sta_info *sta = tx->sta;
+
+	if (unlikely(!sta ||
+		     ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
+		      (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
+		return TXRX_CONTINUE;
+
+	if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) {
+		struct ieee80211_tx_packet_data *pkt_data;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+		printk(KERN_DEBUG "STA " MAC_FMT " aid %d: PS buffer (entries "
+		       "before %d)\n",
+		       MAC_ARG(sta->addr), sta->aid,
+		       skb_queue_len(&sta->ps_tx_buf));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+		sta->flags |= WLAN_STA_TIM;
+		if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+			purge_old_ps_buffers(tx->local);
+		if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
+			struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf);
+			if (net_ratelimit()) {
+				printk(KERN_DEBUG "%s: STA " MAC_FMT " TX "
+				       "buffer full - dropping oldest frame\n",
+				       tx->dev->name, MAC_ARG(sta->addr));
+			}
+			dev_kfree_skb(old);
+		} else
+			tx->local->total_ps_buffered++;
+		/* Queue frame to be sent after STA sends an PS Poll frame */
+		if (skb_queue_empty(&sta->ps_tx_buf)) {
+			if (tx->local->ops->set_tim)
+				tx->local->ops->set_tim(local_to_hw(tx->local),
+						       sta->aid, 1);
+			if (tx->sdata->bss)
+				bss_tim_set(tx->local, tx->sdata->bss, sta->aid);
+		}
+		pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
+		pkt_data->jiffies = jiffies;
+		skb_queue_tail(&sta->ps_tx_buf, tx->skb);
+		return TXRX_QUEUED;
+	}
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+	else if (unlikely(sta->flags & WLAN_STA_PS)) {
+		printk(KERN_DEBUG "%s: STA " MAC_FMT " in PS mode, but pspoll "
+		       "set -> send frame\n", tx->dev->name,
+		       MAC_ARG(sta->addr));
+	}
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+	sta->pspoll = 0;
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
+{
+	if (unlikely(tx->u.tx.ps_buffered))
+		return TXRX_CONTINUE;
+
+	if (tx->u.tx.unicast)
+		return ieee80211_tx_h_unicast_ps_buf(tx);
+	else
+		return ieee80211_tx_h_multicast_ps_buf(tx);
+}
+
+
+static void inline
+__ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+		       struct sk_buff *skb,
+		       struct net_device *dev,
+		       struct ieee80211_tx_control *control)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	int hdrlen;
+
+	memset(tx, 0, sizeof(*tx));
+	tx->skb = skb;
+	tx->dev = dev; /* use original interface */
+	tx->local = local;
+	tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	tx->sta = sta_info_get(local, hdr->addr1);
+	tx->fc = le16_to_cpu(hdr->frame_control);
+	control->power_level = local->hw.conf.power_level;
+	tx->u.tx.control = control;
+	tx->u.tx.unicast = !is_multicast_ether_addr(hdr->addr1);
+	if (is_multicast_ether_addr(hdr->addr1))
+		control->flags |= IEEE80211_TXCTL_NO_ACK;
+	else
+		control->flags &= ~IEEE80211_TXCTL_NO_ACK;
+	tx->fragmented = local->fragmentation_threshold <
+		IEEE80211_MAX_FRAG_THRESHOLD && tx->u.tx.unicast &&
+		skb->len + FCS_LEN > local->fragmentation_threshold &&
+		(!local->ops->set_frag_threshold);
+	if (!tx->sta)
+		control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+	else if (tx->sta->clear_dst_mask) {
+		control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+		tx->sta->clear_dst_mask = 0;
+	}
+	control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+	if (local->sta_antenna_sel != STA_ANTENNA_SEL_AUTO && tx->sta)
+		control->antenna_sel_tx = tx->sta->antenna_sel_tx;
+	hdrlen = ieee80211_get_hdrlen(tx->fc);
+	if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
+		u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
+		tx->ethertype = (pos[0] << 8) | pos[1];
+	}
+	control->flags |= IEEE80211_TXCTL_FIRST_FRAGMENT;
+
+}
+
+static int inline is_ieee80211_device(struct net_device *dev,
+				      struct net_device *master)
+{
+	return (wdev_priv(dev->ieee80211_ptr) ==
+		wdev_priv(master->ieee80211_ptr));
+}
+
+/* Device in tx->dev has a reference added; use dev_put(tx->dev) when
+ * finished with it. */
+static int inline ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+				       struct sk_buff *skb,
+				       struct net_device *mdev,
+				       struct ieee80211_tx_control *control)
+{
+	struct ieee80211_tx_packet_data *pkt_data;
+	struct net_device *dev;
+
+	pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+	dev = dev_get_by_index(pkt_data->ifindex);
+	if (unlikely(dev && !is_ieee80211_device(dev, mdev))) {
+		dev_put(dev);
+		dev = NULL;
+	}
+	if (unlikely(!dev))
+		return -ENODEV;
+	__ieee80211_tx_prepare(tx, skb, dev, control);
+	return 0;
+}
+
+static inline int __ieee80211_queue_stopped(const struct ieee80211_local *local,
+					    int queue)
+{
+	return test_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
+}
+
+static inline int __ieee80211_queue_pending(const struct ieee80211_local *local,
+					    int queue)
+{
+	return test_bit(IEEE80211_LINK_STATE_PENDING, &local->state[queue]);
+}
+
+#define IEEE80211_TX_OK		0
+#define IEEE80211_TX_AGAIN	1
+#define IEEE80211_TX_FRAG_AGAIN	2
+
+static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_tx_control *control = tx->u.tx.control;
+	int ret, i;
+
+	if (!ieee80211_qdisc_installed(local->mdev) &&
+	    __ieee80211_queue_stopped(local, 0)) {
+		netif_stop_queue(local->mdev);
+		return IEEE80211_TX_AGAIN;
+	}
+	if (skb) {
+		ieee80211_dump_frame(local->mdev->name, "TX to low-level driver", skb);
+		ret = local->ops->tx(local_to_hw(local), skb, control);
+		if (ret)
+			return IEEE80211_TX_AGAIN;
+		local->mdev->trans_start = jiffies;
+		ieee80211_led_tx(local, 1);
+	}
+	if (tx->u.tx.extra_frag) {
+		control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
+				    IEEE80211_TXCTL_USE_CTS_PROTECT |
+				    IEEE80211_TXCTL_CLEAR_DST_MASK |
+				    IEEE80211_TXCTL_FIRST_FRAGMENT);
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			if (!tx->u.tx.extra_frag[i])
+				continue;
+			if (__ieee80211_queue_stopped(local, control->queue))
+				return IEEE80211_TX_FRAG_AGAIN;
+			if (i == tx->u.tx.num_extra_frag) {
+				control->tx_rate = tx->u.tx.last_frag_hwrate;
+				control->rate = tx->u.tx.last_frag_rate;
+				if (tx->u.tx.probe_last_frag)
+					control->flags |=
+						IEEE80211_TXCTL_RATE_CTRL_PROBE;
+				else
+					control->flags &=
+						~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+			}
+
+			ieee80211_dump_frame(local->mdev->name,
+					     "TX to low-level driver",
+					     tx->u.tx.extra_frag[i]);
+			ret = local->ops->tx(local_to_hw(local),
+					    tx->u.tx.extra_frag[i],
+					    control);
+			if (ret)
+				return IEEE80211_TX_FRAG_AGAIN;
+			local->mdev->trans_start = jiffies;
+			ieee80211_led_tx(local, 1);
+			tx->u.tx.extra_frag[i] = NULL;
+		}
+		kfree(tx->u.tx.extra_frag);
+		tx->u.tx.extra_frag = NULL;
+	}
+	return IEEE80211_TX_OK;
+}
+
+static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
+			struct ieee80211_tx_control *control, int mgmt)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	ieee80211_tx_handler *handler;
+	struct ieee80211_txrx_data tx;
+	ieee80211_txrx_result res = TXRX_DROP;
+	int ret, i;
+
+	WARN_ON(__ieee80211_queue_pending(local, control->queue));
+
+	if (unlikely(skb->len < 10)) {
+		dev_kfree_skb(skb);
+		return 0;
+	}
+
+	__ieee80211_tx_prepare(&tx, skb, dev, control);
+	sta = tx.sta;
+	tx.u.tx.mgmt_interface = mgmt;
+	tx.u.tx.mode = local->hw.conf.mode;
+
+	for (handler = local->tx_handlers; *handler != NULL; handler++) {
+		res = (*handler)(&tx);
+		if (res != TXRX_CONTINUE)
+			break;
+	}
+
+	skb = tx.skb; /* handlers are allowed to change skb */
+
+	if (sta)
+		sta_info_put(sta);
+
+	if (unlikely(res == TXRX_DROP)) {
+		I802_DEBUG_INC(local->tx_handlers_drop);
+		goto drop;
+	}
+
+	if (unlikely(res == TXRX_QUEUED)) {
+		I802_DEBUG_INC(local->tx_handlers_queued);
+		return 0;
+	}
+
+	if (tx.u.tx.extra_frag) {
+		for (i = 0; i < tx.u.tx.num_extra_frag; i++) {
+			int next_len, dur;
+			struct ieee80211_hdr *hdr =
+				(struct ieee80211_hdr *)
+				tx.u.tx.extra_frag[i]->data;
+
+			if (i + 1 < tx.u.tx.num_extra_frag) {
+				next_len = tx.u.tx.extra_frag[i + 1]->len;
+			} else {
+				next_len = 0;
+				tx.u.tx.rate = tx.u.tx.last_frag_rate;
+				tx.u.tx.last_frag_hwrate = tx.u.tx.rate->val;
+			}
+			dur = ieee80211_duration(&tx, 0, next_len);
+			hdr->duration_id = cpu_to_le16(dur);
+		}
+	}
+
+retry:
+	ret = __ieee80211_tx(local, skb, &tx);
+	if (ret) {
+		struct ieee80211_tx_stored_packet *store =
+			&local->pending_packet[control->queue];
+
+		if (ret == IEEE80211_TX_FRAG_AGAIN)
+			skb = NULL;
+		set_bit(IEEE80211_LINK_STATE_PENDING,
+			&local->state[control->queue]);
+		smp_mb();
+		/* When the driver gets out of buffers during sending of
+		 * fragments and calls ieee80211_stop_queue, there is
+		 * a small window between IEEE80211_LINK_STATE_XOFF and
+		 * IEEE80211_LINK_STATE_PENDING flags are set. If a buffer
+		 * gets available in that window (i.e. driver calls
+		 * ieee80211_wake_queue), we would end up with ieee80211_tx
+		 * called with IEEE80211_LINK_STATE_PENDING. Prevent this by
+		 * continuing transmitting here when that situation is
+		 * possible to have happened. */
+		if (!__ieee80211_queue_stopped(local, control->queue)) {
+			clear_bit(IEEE80211_LINK_STATE_PENDING,
+				  &local->state[control->queue]);
+			goto retry;
+		}
+		memcpy(&store->control, control,
+		       sizeof(struct ieee80211_tx_control));
+		store->skb = skb;
+		store->extra_frag = tx.u.tx.extra_frag;
+		store->num_extra_frag = tx.u.tx.num_extra_frag;
+		store->last_frag_hwrate = tx.u.tx.last_frag_hwrate;
+		store->last_frag_rate = tx.u.tx.last_frag_rate;
+		store->last_frag_rate_ctrl_probe = tx.u.tx.probe_last_frag;
+	}
+	return 0;
+
+ drop:
+	if (skb)
+		dev_kfree_skb(skb);
+	for (i = 0; i < tx.u.tx.num_extra_frag; i++)
+		if (tx.u.tx.extra_frag[i])
+			dev_kfree_skb(tx.u.tx.extra_frag[i]);
+	kfree(tx.u.tx.extra_frag);
+	return 0;
+}
+
+static void ieee80211_tx_pending(unsigned long data)
+{
+	struct ieee80211_local *local = (struct ieee80211_local *)data;
+	struct net_device *dev = local->mdev;
+	struct ieee80211_tx_stored_packet *store;
+	struct ieee80211_txrx_data tx;
+	int i, ret, reschedule = 0;
+
+	netif_tx_lock_bh(dev);
+	for (i = 0; i < local->hw.queues; i++) {
+		if (__ieee80211_queue_stopped(local, i))
+			continue;
+		if (!__ieee80211_queue_pending(local, i)) {
+			reschedule = 1;
+			continue;
+		}
+		store = &local->pending_packet[i];
+		tx.u.tx.control = &store->control;
+		tx.u.tx.extra_frag = store->extra_frag;
+		tx.u.tx.num_extra_frag = store->num_extra_frag;
+		tx.u.tx.last_frag_hwrate = store->last_frag_hwrate;
+		tx.u.tx.last_frag_rate = store->last_frag_rate;
+		tx.u.tx.probe_last_frag = store->last_frag_rate_ctrl_probe;
+		ret = __ieee80211_tx(local, store->skb, &tx);
+		if (ret) {
+			if (ret == IEEE80211_TX_FRAG_AGAIN)
+				store->skb = NULL;
+		} else {
+			clear_bit(IEEE80211_LINK_STATE_PENDING,
+				  &local->state[i]);
+			reschedule = 1;
+		}
+	}
+	netif_tx_unlock_bh(dev);
+	if (reschedule) {
+		if (!ieee80211_qdisc_installed(dev)) {
+			if (!__ieee80211_queue_stopped(local, 0))
+				netif_wake_queue(dev);
+		} else
+			netif_schedule(dev);
+	}
+}
+
+static void ieee80211_clear_tx_pending(struct ieee80211_local *local)
+{
+	int i, j;
+	struct ieee80211_tx_stored_packet *store;
+
+	for (i = 0; i < local->hw.queues; i++) {
+		if (!__ieee80211_queue_pending(local, i))
+			continue;
+		store = &local->pending_packet[i];
+		kfree_skb(store->skb);
+		for (j = 0; j < store->num_extra_frag; j++)
+			kfree_skb(store->extra_frag[j]);
+		kfree(store->extra_frag);
+		clear_bit(IEEE80211_LINK_STATE_PENDING, &local->state[i]);
+	}
+}
+
+static int ieee80211_master_start_xmit(struct sk_buff *skb,
+				       struct net_device *dev)
+{
+	struct ieee80211_tx_control control;
+	struct ieee80211_tx_packet_data *pkt_data;
+	struct net_device *odev = NULL;
+	struct ieee80211_sub_if_data *osdata;
+	int headroom;
+	int ret;
+
+	/*
+	 * copy control out of the skb so other people can use skb->cb
+	 */
+	pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+	memset(&control, 0, sizeof(struct ieee80211_tx_control));
+
+	if (pkt_data->ifindex)
+		odev = dev_get_by_index(pkt_data->ifindex);
+	if (unlikely(odev && !is_ieee80211_device(odev, dev))) {
+		dev_put(odev);
+		odev = NULL;
+	}
+	if (unlikely(!odev)) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+		printk(KERN_DEBUG "%s: Discarded packet with nonexistent "
+		       "originating device\n", dev->name);
+#endif
+		dev_kfree_skb(skb);
+		return 0;
+	}
+	osdata = IEEE80211_DEV_TO_SUB_IF(odev);
+
+	headroom = osdata->local->hw.extra_tx_headroom +
+		IEEE80211_ENCRYPT_HEADROOM;
+	if (skb_headroom(skb) < headroom) {
+		if (pskb_expand_head(skb, headroom, 0, GFP_ATOMIC)) {
+			dev_kfree_skb(skb);
+			return 0;
+		}
+	}
+
+	control.ifindex = odev->ifindex;
+	control.type = osdata->type;
+	if (pkt_data->req_tx_status)
+		control.flags |= IEEE80211_TXCTL_REQ_TX_STATUS;
+	if (pkt_data->do_not_encrypt)
+		control.flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+	if (pkt_data->requeue)
+		control.flags |= IEEE80211_TXCTL_REQUEUE;
+	control.queue = pkt_data->queue;
+
+	ret = ieee80211_tx(odev, skb, &control,
+			   control.type == IEEE80211_IF_TYPE_MGMT);
+	dev_put(odev);
+
+	return ret;
+}
+
+
+/**
+ * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
+ * subinterfaces (wlan#, WDS, and VLAN interfaces)
+ * @skb: packet to be sent
+ * @dev: incoming interface
+ *
+ * Returns: 0 on success (and frees skb in this case) or 1 on failure (skb will
+ * not be freed, and caller is responsible for either retrying later or freeing
+ * skb).
+ *
+ * This function takes in an Ethernet header and encapsulates it with suitable
+ * IEEE 802.11 header based on which interface the packet is coming in. The
+ * encapsulated packet will then be passed to master interface, wlan#.11, for
+ * transmission (through low-level driver).
+ */
+static int ieee80211_subif_start_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_tx_packet_data *pkt_data;
+	struct ieee80211_sub_if_data *sdata;
+	int ret = 1, head_need;
+	u16 ethertype, hdrlen, fc;
+	struct ieee80211_hdr hdr;
+	const u8 *encaps_data;
+	int encaps_len, skip_header_bytes;
+	int nh_pos, h_pos, no_encrypt = 0;
+	struct sta_info *sta;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (unlikely(skb->len < ETH_HLEN)) {
+		printk(KERN_DEBUG "%s: short skb (len=%d)\n",
+		       dev->name, skb->len);
+		ret = 0;
+		goto fail;
+	}
+
+	nh_pos = skb_network_header(skb) - skb->data;
+	h_pos = skb_transport_header(skb) - skb->data;
+
+	/* convert Ethernet header to proper 802.11 header (based on
+	 * operation mode) */
+	ethertype = (skb->data[12] << 8) | skb->data[13];
+	/* TODO: handling for 802.1x authorized/unauthorized port */
+	fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
+
+	if (likely(sdata->type == IEEE80211_IF_TYPE_AP ||
+		   sdata->type == IEEE80211_IF_TYPE_VLAN)) {
+		fc |= IEEE80211_FCTL_FROMDS;
+		/* DA BSSID SA */
+		memcpy(hdr.addr1, skb->data, ETH_ALEN);
+		memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+		memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
+		hdrlen = 24;
+	} else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
+		fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+		/* RA TA DA SA */
+		memcpy(hdr.addr1, sdata->u.wds.remote_addr, ETH_ALEN);
+		memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+		memcpy(hdr.addr3, skb->data, ETH_ALEN);
+		memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+		hdrlen = 30;
+	} else if (sdata->type == IEEE80211_IF_TYPE_STA) {
+		fc |= IEEE80211_FCTL_TODS;
+		/* BSSID SA DA */
+		memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
+		memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+		memcpy(hdr.addr3, skb->data, ETH_ALEN);
+		hdrlen = 24;
+	} else if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		/* DA SA BSSID */
+		memcpy(hdr.addr1, skb->data, ETH_ALEN);
+		memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+		memcpy(hdr.addr3, sdata->u.sta.bssid, ETH_ALEN);
+		hdrlen = 24;
+	} else {
+		ret = 0;
+		goto fail;
+	}
+
+	/* receiver is QoS enabled, use a QoS type frame */
+	sta = sta_info_get(local, hdr.addr1);
+	if (sta) {
+		if (sta->flags & WLAN_STA_WME) {
+			fc |= IEEE80211_STYPE_QOS_DATA;
+			hdrlen += 2;
+		}
+		sta_info_put(sta);
+	}
+
+	hdr.frame_control = cpu_to_le16(fc);
+	hdr.duration_id = 0;
+	hdr.seq_ctrl = 0;
+
+	skip_header_bytes = ETH_HLEN;
+	if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
+		encaps_data = bridge_tunnel_header;
+		encaps_len = sizeof(bridge_tunnel_header);
+		skip_header_bytes -= 2;
+	} else if (ethertype >= 0x600) {
+		encaps_data = rfc1042_header;
+		encaps_len = sizeof(rfc1042_header);
+		skip_header_bytes -= 2;
+	} else {
+		encaps_data = NULL;
+		encaps_len = 0;
+	}
+
+	skb_pull(skb, skip_header_bytes);
+	nh_pos -= skip_header_bytes;
+	h_pos -= skip_header_bytes;
+
+	/* TODO: implement support for fragments so that there is no need to
+	 * reallocate and copy payload; it might be enough to support one
+	 * extra fragment that would be copied in the beginning of the frame
+	 * data.. anyway, it would be nice to include this into skb structure
+	 * somehow
+	 *
+	 * There are few options for this:
+	 * use skb->cb as an extra space for 802.11 header
+	 * allocate new buffer if not enough headroom
+	 * make sure that there is enough headroom in every skb by increasing
+	 * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
+	 * alloc_skb() (net/core/skbuff.c)
+	 */
+	head_need = hdrlen + encaps_len + local->hw.extra_tx_headroom;
+	head_need -= skb_headroom(skb);
+
+	/* We are going to modify skb data, so make a copy of it if happens to
+	 * be cloned. This could happen, e.g., with Linux bridge code passing
+	 * us broadcast frames. */
+
+	if (head_need > 0 || skb_cloned(skb)) {
+#if 0
+		printk(KERN_DEBUG "%s: need to reallocate buffer for %d bytes "
+		       "of headroom\n", dev->name, head_need);
+#endif
+
+		if (skb_cloned(skb))
+			I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
+		else
+			I802_DEBUG_INC(local->tx_expand_skb_head);
+		/* Since we have to reallocate the buffer, make sure that there
+		 * is enough room for possible WEP IV/ICV and TKIP (8 bytes
+		 * before payload and 12 after). */
+		if (pskb_expand_head(skb, (head_need > 0 ? head_need + 8 : 8),
+				     12, GFP_ATOMIC)) {
+			printk(KERN_DEBUG "%s: failed to reallocate TX buffer"
+			       "\n", dev->name);
+			goto fail;
+		}
+	}
+
+	if (encaps_data) {
+		memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
+		nh_pos += encaps_len;
+		h_pos += encaps_len;
+	}
+	memcpy(skb_push(skb, hdrlen), &hdr, hdrlen);
+	nh_pos += hdrlen;
+	h_pos += hdrlen;
+
+	pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+	memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+	pkt_data->ifindex = sdata->dev->ifindex;
+	pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
+	pkt_data->do_not_encrypt = no_encrypt;
+
+	skb->dev = local->mdev;
+	sdata->stats.tx_packets++;
+	sdata->stats.tx_bytes += skb->len;
+
+	/* Update skb pointers to various headers since this modified frame
+	 * is going to go through Linux networking code that may potentially
+	 * need things like pointer to IP header. */
+	skb_set_mac_header(skb, 0);
+	skb_set_network_header(skb, nh_pos);
+	skb_set_transport_header(skb, h_pos);
+
+	dev->trans_start = jiffies;
+	dev_queue_xmit(skb);
+
+	return 0;
+
+ fail:
+	if (!ret)
+		dev_kfree_skb(skb);
+
+	return ret;
+}
+
+
+/*
+ * This is the transmit routine for the 802.11 type interfaces
+ * called by upper layers of the linux networking
+ * stack when it has a frame to transmit
+ */
+static int
+ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_tx_packet_data *pkt_data;
+	struct ieee80211_hdr *hdr;
+	u16 fc;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (skb->len < 10) {
+		dev_kfree_skb(skb);
+		return 0;
+	}
+
+	if (skb_headroom(skb) < sdata->local->hw.extra_tx_headroom) {
+		if (pskb_expand_head(skb,
+		    sdata->local->hw.extra_tx_headroom, 0, GFP_ATOMIC)) {
+			dev_kfree_skb(skb);
+			return 0;
+		}
+	}
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	fc = le16_to_cpu(hdr->frame_control);
+
+	pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+	memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+	pkt_data->ifindex = sdata->dev->ifindex;
+	pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
+
+	skb->priority = 20; /* use hardcoded priority for mgmt TX queue */
+	skb->dev = sdata->local->mdev;
+
+	/*
+	 * We're using the protocol field of the the frame control header
+	 * to request TX callback for hostapd. BIT(1) is checked.
+	 */
+	if ((fc & BIT(1)) == BIT(1)) {
+		pkt_data->req_tx_status = 1;
+		fc &= ~BIT(1);
+		hdr->frame_control = cpu_to_le16(fc);
+	}
+
+	pkt_data->do_not_encrypt = !(fc & IEEE80211_FCTL_PROTECTED);
+
+	sdata->stats.tx_packets++;
+	sdata->stats.tx_bytes += skb->len;
+
+	dev_queue_xmit(skb);
+
+	return 0;
+}
+
+
+static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
+				     struct ieee80211_if_ap *bss,
+				     struct sk_buff *skb)
+{
+	u8 *pos, *tim;
+	int aid0 = 0;
+	int i, have_bits = 0, n1, n2;
+
+	/* Generate bitmap for TIM only if there are any STAs in power save
+	 * mode. */
+	spin_lock_bh(&local->sta_lock);
+	if (atomic_read(&bss->num_sta_ps) > 0)
+		/* in the hope that this is faster than
+		 * checking byte-for-byte */
+		have_bits = !bitmap_empty((unsigned long*)bss->tim,
+					  IEEE80211_MAX_AID+1);
+
+	if (bss->dtim_count == 0)
+		bss->dtim_count = bss->dtim_period - 1;
+	else
+		bss->dtim_count--;
+
+	tim = pos = (u8 *) skb_put(skb, 6);
+	*pos++ = WLAN_EID_TIM;
+	*pos++ = 4;
+	*pos++ = bss->dtim_count;
+	*pos++ = bss->dtim_period;
+
+	if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
+		aid0 = 1;
+
+	if (have_bits) {
+		/* Find largest even number N1 so that bits numbered 1 through
+		 * (N1 x 8) - 1 in the bitmap are 0 and number N2 so that bits
+		 * (N2 + 1) x 8 through 2007 are 0. */
+		n1 = 0;
+		for (i = 0; i < IEEE80211_MAX_TIM_LEN; i++) {
+			if (bss->tim[i]) {
+				n1 = i & 0xfe;
+				break;
+			}
+		}
+		n2 = n1;
+		for (i = IEEE80211_MAX_TIM_LEN - 1; i >= n1; i--) {
+			if (bss->tim[i]) {
+				n2 = i;
+				break;
+			}
+		}
+
+		/* Bitmap control */
+		*pos++ = n1 | aid0;
+		/* Part Virt Bitmap */
+		memcpy(pos, bss->tim + n1, n2 - n1 + 1);
+
+		tim[1] = n2 - n1 + 4;
+		skb_put(skb, n2 - n1);
+	} else {
+		*pos++ = aid0; /* Bitmap control */
+		*pos++ = 0; /* Part Virt Bitmap */
+	}
+	spin_unlock_bh(&local->sta_lock);
+}
+
+
+struct sk_buff * ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id,
+				      struct ieee80211_tx_control *control)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sk_buff *skb;
+	struct net_device *bdev;
+	struct ieee80211_sub_if_data *sdata = NULL;
+	struct ieee80211_if_ap *ap = NULL;
+	struct ieee80211_rate *rate;
+	struct rate_control_extra extra;
+	u8 *b_head, *b_tail;
+	int bh_len, bt_len;
+
+	bdev = dev_get_by_index(if_id);
+	if (bdev) {
+		sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+		ap = &sdata->u.ap;
+		dev_put(bdev);
+	}
+
+	if (!ap || sdata->type != IEEE80211_IF_TYPE_AP ||
+	    !ap->beacon_head) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+		if (net_ratelimit())
+			printk(KERN_DEBUG "no beacon data avail for idx=%d "
+			       "(%s)\n", if_id, bdev ? bdev->name : "N/A");
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+		return NULL;
+	}
+
+	/* Assume we are generating the normal beacon locally */
+	b_head = ap->beacon_head;
+	b_tail = ap->beacon_tail;
+	bh_len = ap->beacon_head_len;
+	bt_len = ap->beacon_tail_len;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+		bh_len + bt_len + 256 /* maximum TIM len */);
+	if (!skb)
+		return NULL;
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	memcpy(skb_put(skb, bh_len), b_head, bh_len);
+
+	ieee80211_include_sequence(sdata, (struct ieee80211_hdr *)skb->data);
+
+	ieee80211_beacon_add_tim(local, ap, skb);
+
+	if (b_tail) {
+		memcpy(skb_put(skb, bt_len), b_tail, bt_len);
+	}
+
+	if (control) {
+		memset(&extra, 0, sizeof(extra));
+		extra.mode = local->oper_hw_mode;
+
+		rate = rate_control_get_rate(local, local->mdev, skb, &extra);
+		if (!rate) {
+			if (net_ratelimit()) {
+				printk(KERN_DEBUG "%s: ieee80211_beacon_get: no rate "
+				       "found\n", local->mdev->name);
+			}
+			dev_kfree_skb(skb);
+			return NULL;
+		}
+
+		control->tx_rate = (local->short_preamble &&
+				    (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
+			rate->val2 : rate->val;
+		control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+		control->power_level = local->hw.conf.power_level;
+		control->flags |= IEEE80211_TXCTL_NO_ACK;
+		control->retry_limit = 1;
+		control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+	}
+
+	ap->num_beacons++;
+	return skb;
+}
+EXPORT_SYMBOL(ieee80211_beacon_get);
+
+__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
+			      size_t frame_len,
+			      const struct ieee80211_tx_control *frame_txctl)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_rate *rate;
+	int short_preamble = local->short_preamble;
+	int erp;
+	u16 dur;
+
+	rate = frame_txctl->rts_rate;
+	erp = !!(rate->flags & IEEE80211_RATE_ERP);
+
+	/* CTS duration */
+	dur = ieee80211_frame_duration(local, 10, rate->rate,
+				       erp, short_preamble);
+	/* Data frame duration */
+	dur += ieee80211_frame_duration(local, frame_len, rate->rate,
+					erp, short_preamble);
+	/* ACK duration */
+	dur += ieee80211_frame_duration(local, 10, rate->rate,
+					erp, short_preamble);
+
+	return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_rts_duration);
+
+
+__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
+				    size_t frame_len,
+				    const struct ieee80211_tx_control *frame_txctl)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_rate *rate;
+	int short_preamble = local->short_preamble;
+	int erp;
+	u16 dur;
+
+	rate = frame_txctl->rts_rate;
+	erp = !!(rate->flags & IEEE80211_RATE_ERP);
+
+	/* Data frame duration */
+	dur = ieee80211_frame_duration(local, frame_len, rate->rate,
+				       erp, short_preamble);
+	if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
+		/* ACK duration */
+		dur += ieee80211_frame_duration(local, 10, rate->rate,
+						erp, short_preamble);
+	}
+
+	return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_ctstoself_duration);
+
+void ieee80211_rts_get(struct ieee80211_hw *hw,
+		       const void *frame, size_t frame_len,
+		       const struct ieee80211_tx_control *frame_txctl,
+		       struct ieee80211_rts *rts)
+{
+	const struct ieee80211_hdr *hdr = frame;
+	u16 fctl;
+
+	fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS;
+	rts->frame_control = cpu_to_le16(fctl);
+	rts->duration = ieee80211_rts_duration(hw, frame_len, frame_txctl);
+	memcpy(rts->ra, hdr->addr1, sizeof(rts->ra));
+	memcpy(rts->ta, hdr->addr2, sizeof(rts->ta));
+}
+EXPORT_SYMBOL(ieee80211_rts_get);
+
+void ieee80211_ctstoself_get(struct ieee80211_hw *hw,
+			     const void *frame, size_t frame_len,
+			     const struct ieee80211_tx_control *frame_txctl,
+			     struct ieee80211_cts *cts)
+{
+	const struct ieee80211_hdr *hdr = frame;
+	u16 fctl;
+
+	fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS;
+	cts->frame_control = cpu_to_le16(fctl);
+	cts->duration = ieee80211_ctstoself_duration(hw, frame_len, frame_txctl);
+	memcpy(cts->ra, hdr->addr1, sizeof(cts->ra));
+}
+EXPORT_SYMBOL(ieee80211_ctstoself_get);
+
+struct sk_buff *
+ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
+			  struct ieee80211_tx_control *control)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sk_buff *skb;
+	struct sta_info *sta;
+	ieee80211_tx_handler *handler;
+	struct ieee80211_txrx_data tx;
+	ieee80211_txrx_result res = TXRX_DROP;
+	struct net_device *bdev;
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_ap *bss = NULL;
+
+	bdev = dev_get_by_index(if_id);
+	if (bdev) {
+		sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+		bss = &sdata->u.ap;
+		dev_put(bdev);
+	}
+	if (!bss || sdata->type != IEEE80211_IF_TYPE_AP || !bss->beacon_head)
+		return NULL;
+
+	if (bss->dtim_count != 0)
+		return NULL; /* send buffered bc/mc only after DTIM beacon */
+	memset(control, 0, sizeof(*control));
+	while (1) {
+		skb = skb_dequeue(&bss->ps_bc_buf);
+		if (!skb)
+			return NULL;
+		local->total_ps_buffered--;
+
+		if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
+			struct ieee80211_hdr *hdr =
+				(struct ieee80211_hdr *) skb->data;
+			/* more buffered multicast/broadcast frames ==> set
+			 * MoreData flag in IEEE 802.11 header to inform PS
+			 * STAs */
+			hdr->frame_control |=
+				cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+		}
+
+		if (ieee80211_tx_prepare(&tx, skb, local->mdev, control) == 0)
+			break;
+		dev_kfree_skb_any(skb);
+	}
+	sta = tx.sta;
+	tx.u.tx.ps_buffered = 1;
+
+	for (handler = local->tx_handlers; *handler != NULL; handler++) {
+		res = (*handler)(&tx);
+		if (res == TXRX_DROP || res == TXRX_QUEUED)
+			break;
+	}
+	dev_put(tx.dev);
+	skb = tx.skb; /* handlers are allowed to change skb */
+
+	if (res == TXRX_DROP) {
+		I802_DEBUG_INC(local->tx_handlers_drop);
+		dev_kfree_skb(skb);
+		skb = NULL;
+	} else if (res == TXRX_QUEUED) {
+		I802_DEBUG_INC(local->tx_handlers_queued);
+		skb = NULL;
+	}
+
+	if (sta)
+		sta_info_put(sta);
+
+	return skb;
+}
+EXPORT_SYMBOL(ieee80211_get_buffered_bc);
+
+static int __ieee80211_if_config(struct net_device *dev,
+				 struct sk_buff *beacon,
+				 struct ieee80211_tx_control *control)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_if_conf conf;
+	static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+	if (!local->ops->config_interface || !netif_running(dev))
+		return 0;
+
+	memset(&conf, 0, sizeof(conf));
+	conf.type = sdata->type;
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		if (local->sta_scanning &&
+		    local->scan_dev == dev)
+			conf.bssid = scan_bssid;
+		else
+			conf.bssid = sdata->u.sta.bssid;
+		conf.ssid = sdata->u.sta.ssid;
+		conf.ssid_len = sdata->u.sta.ssid_len;
+		conf.generic_elem = sdata->u.sta.extra_ie;
+		conf.generic_elem_len = sdata->u.sta.extra_ie_len;
+	} else if (sdata->type == IEEE80211_IF_TYPE_AP) {
+		conf.ssid = sdata->u.ap.ssid;
+		conf.ssid_len = sdata->u.ap.ssid_len;
+		conf.generic_elem = sdata->u.ap.generic_elem;
+		conf.generic_elem_len = sdata->u.ap.generic_elem_len;
+		conf.beacon = beacon;
+		conf.beacon_control = control;
+	}
+	return local->ops->config_interface(local_to_hw(local),
+					   dev->ifindex, &conf);
+}
+
+int ieee80211_if_config(struct net_device *dev)
+{
+	return __ieee80211_if_config(dev, NULL, NULL);
+}
+
+int ieee80211_if_config_beacon(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_tx_control control;
+	struct sk_buff *skb;
+
+	if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+		return 0;
+	skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
+	if (!skb)
+		return -ENOMEM;
+	return __ieee80211_if_config(dev, skb, &control);
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local)
+{
+	struct ieee80211_hw_mode *mode;
+	struct ieee80211_channel *chan;
+	int ret = 0;
+
+	if (local->sta_scanning) {
+		chan = local->scan_channel;
+		mode = local->scan_hw_mode;
+	} else {
+		chan = local->oper_channel;
+		mode = local->oper_hw_mode;
+	}
+
+	local->hw.conf.channel = chan->chan;
+	local->hw.conf.channel_val = chan->val;
+	local->hw.conf.power_level = chan->power_level;
+	local->hw.conf.freq = chan->freq;
+	local->hw.conf.phymode = mode->mode;
+	local->hw.conf.antenna_max = chan->antenna_max;
+	local->hw.conf.chan = chan;
+	local->hw.conf.mode = mode;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
+	       "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
+	       local->hw.conf.phymode);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+	if (local->ops->config)
+		ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+
+	return ret;
+}
+
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+	/* FIX: what would be proper limits for MTU?
+	 * This interface uses 802.3 frames. */
+	if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
+		printk(KERN_WARNING "%s: invalid MTU %d\n",
+		       dev->name, new_mtu);
+		return -EINVAL;
+	}
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+
+static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
+{
+	/* FIX: what would be proper limits for MTU?
+	 * This interface uses 802.11 frames. */
+	if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
+		printk(KERN_WARNING "%s: invalid MTU %d\n",
+		       dev->name, new_mtu);
+		return -EINVAL;
+	}
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+enum netif_tx_lock_class {
+	TX_LOCK_NORMAL,
+	TX_LOCK_MASTER,
+};
+
+static inline void netif_tx_lock_nested(struct net_device *dev, int subclass)
+{
+	spin_lock_nested(&dev->_xmit_lock, subclass);
+	dev->xmit_lock_owner = smp_processor_id();
+}
+
+static void ieee80211_set_multicast_list(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	unsigned short flags;
+
+	netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER);
+	if (((dev->flags & IFF_ALLMULTI) != 0) ^ (sdata->allmulti != 0)) {
+		if (sdata->allmulti) {
+			sdata->allmulti = 0;
+			local->iff_allmultis--;
+		} else {
+			sdata->allmulti = 1;
+			local->iff_allmultis++;
+		}
+	}
+	if (((dev->flags & IFF_PROMISC) != 0) ^ (sdata->promisc != 0)) {
+		if (sdata->promisc) {
+			sdata->promisc = 0;
+			local->iff_promiscs--;
+		} else {
+			sdata->promisc = 1;
+			local->iff_promiscs++;
+		}
+	}
+	if (dev->mc_count != sdata->mc_count) {
+		local->mc_count = local->mc_count - sdata->mc_count +
+				  dev->mc_count;
+		sdata->mc_count = dev->mc_count;
+	}
+	if (local->ops->set_multicast_list) {
+		flags = local->mdev->flags;
+		if (local->iff_allmultis)
+			flags |= IFF_ALLMULTI;
+		if (local->iff_promiscs)
+			flags |= IFF_PROMISC;
+		read_lock(&local->sub_if_lock);
+		local->ops->set_multicast_list(local_to_hw(local), flags,
+					      local->mc_count);
+		read_unlock(&local->sub_if_lock);
+	}
+	netif_tx_unlock(local->mdev);
+}
+
+struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
+					       struct dev_mc_list *prev,
+					       void **ptr)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata = *ptr;
+	struct dev_mc_list *mc;
+
+	if (!prev) {
+		WARN_ON(sdata);
+		sdata = NULL;
+	}
+	if (!prev || !prev->next) {
+		if (sdata)
+			sdata = list_entry(sdata->list.next,
+					   struct ieee80211_sub_if_data, list);
+		else
+			sdata = list_entry(local->sub_if_list.next,
+					   struct ieee80211_sub_if_data, list);
+		if (&sdata->list != &local->sub_if_list)
+			mc = sdata->dev->mc_list;
+		else
+			mc = NULL;
+	} else
+		mc = prev->next;
+
+	*ptr = sdata;
+	return mc;
+}
+EXPORT_SYMBOL(ieee80211_get_mc_list_item);
+
+static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata;
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	return &(sdata->stats);
+}
+
+static void ieee80211_if_shutdown(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	ASSERT_RTNL();
+	switch (sdata->type) {
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS:
+		sdata->u.sta.state = IEEE80211_DISABLED;
+		del_timer_sync(&sdata->u.sta.timer);
+		skb_queue_purge(&sdata->u.sta.skb_queue);
+		if (!local->ops->hw_scan &&
+		    local->scan_dev == sdata->dev) {
+			local->sta_scanning = 0;
+			cancel_delayed_work(&local->scan_work);
+		}
+		flush_workqueue(local->hw.workqueue);
+		break;
+	}
+}
+
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+	return (type1 == IEEE80211_IF_TYPE_MNTR ||
+		type2 == IEEE80211_IF_TYPE_MNTR ||
+		(type1 == IEEE80211_IF_TYPE_AP &&
+		 type2 == IEEE80211_IF_TYPE_WDS) ||
+		(type1 == IEEE80211_IF_TYPE_WDS &&
+		 (type2 == IEEE80211_IF_TYPE_WDS ||
+		  type2 == IEEE80211_IF_TYPE_AP)) ||
+		(type1 == IEEE80211_IF_TYPE_AP &&
+		 type2 == IEEE80211_IF_TYPE_VLAN) ||
+		(type1 == IEEE80211_IF_TYPE_VLAN &&
+		 (type2 == IEEE80211_IF_TYPE_AP ||
+		  type2 == IEEE80211_IF_TYPE_VLAN)));
+}
+
+static int ieee80211_master_open(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	int res = -EOPNOTSUPP;
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		if (sdata->dev != dev && netif_running(sdata->dev)) {
+			res = 0;
+			break;
+		}
+	}
+	read_unlock(&local->sub_if_lock);
+	return res;
+}
+
+static int ieee80211_master_stop(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list)
+		if (sdata->dev != dev && netif_running(sdata->dev))
+			dev_close(sdata->dev);
+	read_unlock(&local->sub_if_lock);
+
+	return 0;
+}
+
+static int ieee80211_mgmt_open(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (!netif_running(local->mdev))
+		return -EOPNOTSUPP;
+	return 0;
+}
+
+static int ieee80211_mgmt_stop(struct net_device *dev)
+{
+	return 0;
+}
+
+/* Check if running monitor interfaces should go to a "soft monitor" mode
+ * and switch them if necessary. */
+static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
+{
+	struct ieee80211_if_init_conf conf;
+
+	if (local->open_count && local->open_count == local->monitors &&
+	    !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
+	    local->ops->remove_interface) {
+		conf.if_id = -1;
+		conf.type = IEEE80211_IF_TYPE_MNTR;
+		conf.mac_addr = NULL;
+		local->ops->remove_interface(local_to_hw(local), &conf);
+	}
+}
+
+/* Check if running monitor interfaces should go to a "hard monitor" mode
+ * and switch them if necessary. */
+static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
+{
+	struct ieee80211_if_init_conf conf;
+
+	if (local->open_count && local->open_count == local->monitors &&
+	    !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
+	    local->ops->add_interface) {
+		conf.if_id = -1;
+		conf.type = IEEE80211_IF_TYPE_MNTR;
+		conf.mac_addr = NULL;
+		local->ops->add_interface(local_to_hw(local), &conf);
+	}
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata, *nsdata;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_if_init_conf conf;
+	int res;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(nsdata, &local->sub_if_list, list) {
+		struct net_device *ndev = nsdata->dev;
+
+		if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
+		    compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
+		    !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
+			read_unlock(&local->sub_if_lock);
+			return -ENOTUNIQ;
+		}
+	}
+	read_unlock(&local->sub_if_lock);
+
+	if (sdata->type == IEEE80211_IF_TYPE_WDS &&
+	    is_zero_ether_addr(sdata->u.wds.remote_addr))
+		return -ENOLINK;
+
+	if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
+	    !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+		/* run the interface in a "soft monitor" mode */
+		local->monitors++;
+		local->open_count++;
+		local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+		return 0;
+	}
+	ieee80211_start_soft_monitor(local);
+
+	if (local->ops->add_interface) {
+		conf.if_id = dev->ifindex;
+		conf.type = sdata->type;
+		conf.mac_addr = dev->dev_addr;
+		res = local->ops->add_interface(local_to_hw(local), &conf);
+		if (res) {
+			if (sdata->type == IEEE80211_IF_TYPE_MNTR)
+				ieee80211_start_hard_monitor(local);
+			return res;
+		}
+	} else {
+		if (sdata->type != IEEE80211_IF_TYPE_STA)
+			return -EOPNOTSUPP;
+		if (local->open_count > 0)
+			return -ENOBUFS;
+	}
+
+	if (local->open_count == 0) {
+		res = 0;
+		tasklet_enable(&local->tx_pending_tasklet);
+		tasklet_enable(&local->tasklet);
+		if (local->ops->open)
+			res = local->ops->open(local_to_hw(local));
+		if (res == 0) {
+			res = dev_open(local->mdev);
+			if (res) {
+				if (local->ops->stop)
+					local->ops->stop(local_to_hw(local));
+			} else {
+				res = ieee80211_hw_config(local);
+				if (res && local->ops->stop)
+					local->ops->stop(local_to_hw(local));
+				else if (!res && local->apdev)
+					dev_open(local->apdev);
+			}
+		}
+		if (res) {
+			if (local->ops->remove_interface)
+				local->ops->remove_interface(local_to_hw(local),
+							    &conf);
+			return res;
+		}
+	}
+	local->open_count++;
+
+	if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+		local->monitors++;
+		local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+	} else
+		ieee80211_if_config(dev);
+
+	if (sdata->type == IEEE80211_IF_TYPE_STA &&
+	    !local->user_space_mlme)
+		netif_carrier_off(dev);
+
+	netif_start_queue(dev);
+	return 0;
+}
+
+
+static int ieee80211_stop(struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
+	    local->open_count > 1 &&
+	    !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+		/* remove "soft monitor" interface */
+		local->open_count--;
+		local->monitors--;
+		if (!local->monitors)
+			local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+		return 0;
+	}
+
+	netif_stop_queue(dev);
+	ieee80211_if_shutdown(dev);
+
+	if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+		local->monitors--;
+		if (!local->monitors)
+			local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+	}
+
+	local->open_count--;
+	if (local->open_count == 0) {
+		if (netif_running(local->mdev))
+			dev_close(local->mdev);
+		if (local->apdev)
+			dev_close(local->apdev);
+		if (local->ops->stop)
+			local->ops->stop(local_to_hw(local));
+		tasklet_disable(&local->tx_pending_tasklet);
+		tasklet_disable(&local->tasklet);
+	}
+	if (local->ops->remove_interface) {
+		struct ieee80211_if_init_conf conf;
+
+		conf.if_id = dev->ifindex;
+		conf.type = sdata->type;
+		conf.mac_addr = dev->dev_addr;
+		local->ops->remove_interface(local_to_hw(local), &conf);
+	}
+
+	ieee80211_start_hard_monitor(local);
+
+	return 0;
+}
+
+
+static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
+{
+	memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+	return ETH_ALEN;
+}
+
+static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
+{
+	return compare_ether_addr(raddr, addr) == 0 ||
+	       is_broadcast_ether_addr(raddr);
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
+{
+	struct net_device *dev = rx->dev;
+	struct ieee80211_local *local = rx->local;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+	u16 fc, hdrlen, ethertype;
+	u8 *payload;
+	u8 dst[ETH_ALEN];
+	u8 src[ETH_ALEN];
+	struct sk_buff *skb = rx->skb, *skb2;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	fc = rx->fc;
+	if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
+		return TXRX_CONTINUE;
+
+	if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+		return TXRX_DROP;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	/* convert IEEE 802.11 header + possible LLC headers into Ethernet
+	 * header
+	 * IEEE 802.11 address fields:
+	 * ToDS FromDS Addr1 Addr2 Addr3 Addr4
+	 *   0     0   DA    SA    BSSID n/a
+	 *   0     1   DA    BSSID SA    n/a
+	 *   1     0   BSSID SA    DA    n/a
+	 *   1     1   RA    TA    DA    SA
+	 */
+
+	switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	case IEEE80211_FCTL_TODS:
+		/* BSSID SA DA */
+		memcpy(dst, hdr->addr3, ETH_ALEN);
+		memcpy(src, hdr->addr2, ETH_ALEN);
+
+		if (unlikely(sdata->type != IEEE80211_IF_TYPE_AP &&
+			     sdata->type != IEEE80211_IF_TYPE_VLAN)) {
+			printk(KERN_DEBUG "%s: dropped ToDS frame (BSSID="
+			       MAC_FMT " SA=" MAC_FMT " DA=" MAC_FMT ")\n",
+			       dev->name, MAC_ARG(hdr->addr1),
+			       MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr3));
+			return TXRX_DROP;
+		}
+		break;
+	case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+		/* RA TA DA SA */
+		memcpy(dst, hdr->addr3, ETH_ALEN);
+		memcpy(src, hdr->addr4, ETH_ALEN);
+
+		if (unlikely(sdata->type != IEEE80211_IF_TYPE_WDS)) {
+			printk(KERN_DEBUG "%s: dropped FromDS&ToDS frame (RA="
+			       MAC_FMT " TA=" MAC_FMT " DA=" MAC_FMT " SA="
+			       MAC_FMT ")\n",
+			       rx->dev->name, MAC_ARG(hdr->addr1),
+			       MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr3),
+			       MAC_ARG(hdr->addr4));
+			return TXRX_DROP;
+		}
+		break;
+	case IEEE80211_FCTL_FROMDS:
+		/* DA BSSID SA */
+		memcpy(dst, hdr->addr1, ETH_ALEN);
+		memcpy(src, hdr->addr3, ETH_ALEN);
+
+		if (sdata->type != IEEE80211_IF_TYPE_STA) {
+			return TXRX_DROP;
+		}
+		break;
+	case 0:
+		/* DA SA BSSID */
+		memcpy(dst, hdr->addr1, ETH_ALEN);
+		memcpy(src, hdr->addr2, ETH_ALEN);
+
+		if (sdata->type != IEEE80211_IF_TYPE_IBSS) {
+			if (net_ratelimit()) {
+				printk(KERN_DEBUG "%s: dropped IBSS frame (DA="
+				       MAC_FMT " SA=" MAC_FMT " BSSID=" MAC_FMT
+				       ")\n",
+				       dev->name, MAC_ARG(hdr->addr1),
+				       MAC_ARG(hdr->addr2),
+				       MAC_ARG(hdr->addr3));
+			}
+			return TXRX_DROP;
+		}
+		break;
+	}
+
+	payload = skb->data + hdrlen;
+
+	if (unlikely(skb->len - hdrlen < 8)) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: RX too short data frame "
+			       "payload\n", dev->name);
+		}
+		return TXRX_DROP;
+	}
+
+	ethertype = (payload[6] << 8) | payload[7];
+
+	if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+		    ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+		   compare_ether_addr(payload, bridge_tunnel_header) == 0)) {
+		/* remove RFC1042 or Bridge-Tunnel encapsulation and
+		 * replace EtherType */
+		skb_pull(skb, hdrlen + 6);
+		memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+		memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+	} else {
+		struct ethhdr *ehdr;
+		__be16 len;
+		skb_pull(skb, hdrlen);
+		len = htons(skb->len);
+		ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
+		memcpy(ehdr->h_dest, dst, ETH_ALEN);
+		memcpy(ehdr->h_source, src, ETH_ALEN);
+		ehdr->h_proto = len;
+	}
+	skb->dev = dev;
+
+	skb2 = NULL;
+
+	sdata->stats.rx_packets++;
+	sdata->stats.rx_bytes += skb->len;
+
+	if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP
+	    || sdata->type == IEEE80211_IF_TYPE_VLAN) && rx->u.rx.ra_match) {
+		if (is_multicast_ether_addr(skb->data)) {
+			/* send multicast frames both to higher layers in
+			 * local net stack and back to the wireless media */
+			skb2 = skb_copy(skb, GFP_ATOMIC);
+			if (!skb2)
+				printk(KERN_DEBUG "%s: failed to clone "
+				       "multicast frame\n", dev->name);
+		} else {
+			struct sta_info *dsta;
+			dsta = sta_info_get(local, skb->data);
+			if (dsta && !dsta->dev) {
+				printk(KERN_DEBUG "Station with null dev "
+				       "structure!\n");
+			} else if (dsta && dsta->dev == dev) {
+				/* Destination station is associated to this
+				 * AP, so send the frame directly to it and
+				 * do not pass the frame to local net stack.
+				 */
+				skb2 = skb;
+				skb = NULL;
+			}
+			if (dsta)
+				sta_info_put(dsta);
+		}
+	}
+
+	if (skb) {
+		/* deliver to local stack */
+		skb->protocol = eth_type_trans(skb, dev);
+		memset(skb->cb, 0, sizeof(skb->cb));
+		netif_rx(skb);
+	}
+
+	if (skb2) {
+		/* send to wireless media */
+		skb2->protocol = __constant_htons(ETH_P_802_3);
+		skb_set_network_header(skb2, 0);
+		skb_set_mac_header(skb2, 0);
+		dev_queue_xmit(skb2);
+	}
+
+	return TXRX_QUEUED;
+}
+
+
+static struct ieee80211_rate *
+ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
+{
+	struct ieee80211_hw_mode *mode;
+	int r;
+
+	list_for_each_entry(mode, &local->modes_list, list) {
+		if (mode->mode != phymode)
+			continue;
+		for (r = 0; r < mode->num_rates; r++) {
+			struct ieee80211_rate *rate = &mode->rates[r];
+			if (rate->val == hw_rate ||
+			    (rate->flags & IEEE80211_RATE_PREAMBLE2 &&
+			     rate->val2 == hw_rate))
+				return rate;
+		}
+	}
+
+	return NULL;
+}
+
+static void
+ieee80211_fill_frame_info(struct ieee80211_local *local,
+			  struct ieee80211_frame_info *fi,
+			  struct ieee80211_rx_status *status)
+{
+	if (status) {
+		struct timespec ts;
+		struct ieee80211_rate *rate;
+
+		jiffies_to_timespec(jiffies, &ts);
+		fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
+					   ts.tv_nsec / 1000);
+		fi->mactime = cpu_to_be64(status->mactime);
+		switch (status->phymode) {
+		case MODE_IEEE80211A:
+			fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
+			break;
+		case MODE_IEEE80211B:
+			fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
+			break;
+		case MODE_IEEE80211G:
+			fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
+			break;
+		case MODE_ATHEROS_TURBO:
+			fi->phytype =
+				htonl(ieee80211_phytype_dsss_dot11_turbo);
+			break;
+		default:
+			fi->phytype = htonl(0xAAAAAAAA);
+			break;
+		}
+		fi->channel = htonl(status->channel);
+		rate = ieee80211_get_rate(local, status->phymode,
+					  status->rate);
+		if (rate) {
+			fi->datarate = htonl(rate->rate);
+			if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
+				if (status->rate == rate->val)
+					fi->preamble = htonl(2); /* long */
+				else if (status->rate == rate->val2)
+					fi->preamble = htonl(1); /* short */
+			} else
+				fi->preamble = htonl(0);
+		} else {
+			fi->datarate = htonl(0);
+			fi->preamble = htonl(0);
+		}
+
+		fi->antenna = htonl(status->antenna);
+		fi->priority = htonl(0xffffffff); /* no clue */
+		fi->ssi_type = htonl(ieee80211_ssi_raw);
+		fi->ssi_signal = htonl(status->ssi);
+		fi->ssi_noise = 0x00000000;
+		fi->encoding = 0;
+	} else {
+		/* clear everything because we really don't know.
+		 * the msg_type field isn't present on monitor frames
+		 * so we don't know whether it will be present or not,
+		 * but it's ok to not clear it since it'll be assigned
+		 * anyway */
+		memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
+
+		fi->ssi_type = htonl(ieee80211_ssi_none);
+	}
+	fi->version = htonl(IEEE80211_FI_VERSION);
+	fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
+}
+
+/* this routine is actually not just for this, but also
+ * for pushing fake 'management' frames into userspace.
+ * it shall be replaced by a netlink-based system. */
+void
+ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
+		  struct ieee80211_rx_status *status, u32 msg_type)
+{
+	struct ieee80211_frame_info *fi;
+	const size_t hlen = sizeof(struct ieee80211_frame_info);
+	struct ieee80211_sub_if_data *sdata;
+
+	skb->dev = local->apdev;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
+
+	if (skb_headroom(skb) < hlen) {
+		I802_DEBUG_INC(local->rx_expand_skb_head);
+		if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
+			dev_kfree_skb(skb);
+			return;
+		}
+	}
+
+	fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
+
+	ieee80211_fill_frame_info(local, fi, status);
+	fi->msg_type = htonl(msg_type);
+
+	sdata->stats.rx_packets++;
+	sdata->stats.rx_bytes += skb->len;
+
+	skb_set_mac_header(skb, 0);
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb->pkt_type = PACKET_OTHERHOST;
+	skb->protocol = htons(ETH_P_802_2);
+	memset(skb->cb, 0, sizeof(skb->cb));
+	netif_rx(skb);
+}
+
+static void
+ieee80211_rx_monitor(struct net_device *dev, struct sk_buff *skb,
+		     struct ieee80211_rx_status *status)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_rate *rate;
+	struct ieee80211_rtap_hdr {
+		struct ieee80211_radiotap_header hdr;
+		u8 flags;
+		u8 rate;
+		__le16 chan_freq;
+		__le16 chan_flags;
+		u8 antsignal;
+	} __attribute__ ((packed)) *rthdr;
+
+	skb->dev = dev;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (status->flag & RX_FLAG_RADIOTAP)
+		goto out;
+
+	if (skb_headroom(skb) < sizeof(*rthdr)) {
+		I802_DEBUG_INC(local->rx_expand_skb_head);
+		if (pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) {
+			dev_kfree_skb(skb);
+			return;
+		}
+	}
+
+	rthdr = (struct ieee80211_rtap_hdr *) skb_push(skb, sizeof(*rthdr));
+	memset(rthdr, 0, sizeof(*rthdr));
+	rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
+	rthdr->hdr.it_present =
+		cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
+			    (1 << IEEE80211_RADIOTAP_RATE) |
+			    (1 << IEEE80211_RADIOTAP_CHANNEL) |
+			    (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL));
+	rthdr->flags = local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS ?
+		       IEEE80211_RADIOTAP_F_FCS : 0;
+	rate = ieee80211_get_rate(local, status->phymode, status->rate);
+	if (rate)
+		rthdr->rate = rate->rate / 5;
+	rthdr->chan_freq = cpu_to_le16(status->freq);
+	rthdr->chan_flags =
+		status->phymode == MODE_IEEE80211A ?
+		cpu_to_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ) :
+		cpu_to_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ);
+	rthdr->antsignal = status->ssi;
+
+ out:
+	sdata->stats.rx_packets++;
+	sdata->stats.rx_bytes += skb->len;
+
+	skb_set_mac_header(skb, 0);
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb->pkt_type = PACKET_OTHERHOST;
+	skb->protocol = htons(ETH_P_802_2);
+	memset(skb->cb, 0, sizeof(skb->cb));
+	netif_rx(skb);
+}
+
+int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
+			   int radar, int radar_type)
+{
+	struct sk_buff *skb;
+	struct ieee80211_radar_info *msg;
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	if (!local->apdev)
+		return 0;
+
+	skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+			    sizeof(struct ieee80211_radar_info));
+
+	if (!skb)
+		return -ENOMEM;
+	skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+	msg = (struct ieee80211_radar_info *)
+		skb_put(skb, sizeof(struct ieee80211_radar_info));
+	msg->channel = channel;
+	msg->radar = radar;
+	msg->radar_type = radar_type;
+
+	ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar);
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_radar_status);
+
+int ieee80211_set_aid_for_sta(struct ieee80211_hw *hw, u8 *peer_address,
+			      u16 aid)
+{
+	struct sk_buff *skb;
+	struct ieee80211_msg_set_aid_for_sta *msg;
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	/* unlikely because if this event only happens for APs,
+	 * which require an open ap device. */
+	if (unlikely(!local->apdev))
+		return 0;
+
+	skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+			    sizeof(struct ieee80211_msg_set_aid_for_sta));
+
+	if (!skb)
+		return -ENOMEM;
+	skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+	msg = (struct ieee80211_msg_set_aid_for_sta *)
+		skb_put(skb, sizeof(struct ieee80211_msg_set_aid_for_sta));
+	memcpy(msg->sta_address, peer_address, ETH_ALEN);
+	msg->aid = aid;
+
+	ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_set_aid_for_sta);
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_set_aid_for_sta);
+
+static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata;
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+	if (sdata->bss)
+		atomic_inc(&sdata->bss->num_sta_ps);
+	sta->flags |= WLAN_STA_PS;
+	sta->pspoll = 0;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+	printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d enters power "
+	       "save mode\n", dev->name, MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+}
+
+
+static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	int sent = 0;
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_tx_packet_data *pkt_data;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+	if (sdata->bss)
+		atomic_dec(&sdata->bss->num_sta_ps);
+	sta->flags &= ~(WLAN_STA_PS | WLAN_STA_TIM);
+	sta->pspoll = 0;
+	if (!skb_queue_empty(&sta->ps_tx_buf)) {
+		if (local->ops->set_tim)
+			local->ops->set_tim(local_to_hw(local), sta->aid, 0);
+		if (sdata->bss)
+			bss_tim_clear(local, sdata->bss, sta->aid);
+	}
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+	printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d exits power "
+	       "save mode\n", dev->name, MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+	/* Send all buffered frames to the station */
+	while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+		pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+		sent++;
+		pkt_data->requeue = 1;
+		dev_queue_xmit(skb);
+	}
+	while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+		pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+		local->total_ps_buffered--;
+		sent++;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+		printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d send PS frame "
+		       "since STA not sleeping anymore\n", dev->name,
+		       MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+		pkt_data->requeue = 1;
+		dev_queue_xmit(skb);
+	}
+
+	return sent;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
+{
+	struct sk_buff *skb;
+	int no_pending_pkts;
+
+	if (likely(!rx->sta ||
+		   (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL ||
+		   (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PSPOLL ||
+		   !rx->u.rx.ra_match))
+		return TXRX_CONTINUE;
+
+	skb = skb_dequeue(&rx->sta->tx_filtered);
+	if (!skb) {
+		skb = skb_dequeue(&rx->sta->ps_tx_buf);
+		if (skb)
+			rx->local->total_ps_buffered--;
+	}
+	no_pending_pkts = skb_queue_empty(&rx->sta->tx_filtered) &&
+		skb_queue_empty(&rx->sta->ps_tx_buf);
+
+	if (skb) {
+		struct ieee80211_hdr *hdr =
+			(struct ieee80211_hdr *) skb->data;
+
+		/* tell TX path to send one frame even though the STA may
+		 * still remain is PS mode after this frame exchange */
+		rx->sta->pspoll = 1;
+
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+		printk(KERN_DEBUG "STA " MAC_FMT " aid %d: PS Poll (entries "
+		       "after %d)\n",
+		       MAC_ARG(rx->sta->addr), rx->sta->aid,
+		       skb_queue_len(&rx->sta->ps_tx_buf));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+
+		/* Use MoreData flag to indicate whether there are more
+		 * buffered frames for this STA */
+		if (no_pending_pkts) {
+			hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+			rx->sta->flags &= ~WLAN_STA_TIM;
+		} else
+			hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+
+		dev_queue_xmit(skb);
+
+		if (no_pending_pkts) {
+			if (rx->local->ops->set_tim)
+				rx->local->ops->set_tim(local_to_hw(rx->local),
+						       rx->sta->aid, 0);
+			if (rx->sdata->bss)
+				bss_tim_clear(rx->local, rx->sdata->bss, rx->sta->aid);
+		}
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+	} else if (!rx->u.rx.sent_ps_buffered) {
+		printk(KERN_DEBUG "%s: STA " MAC_FMT " sent PS Poll even "
+		       "though there is no buffered frames for it\n",
+		       rx->dev->name, MAC_ARG(rx->sta->addr));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+
+	}
+
+	/* Free PS Poll skb here instead of returning TXRX_DROP that would
+	 * count as an dropped frame. */
+	dev_kfree_skb(rx->skb);
+
+	return TXRX_QUEUED;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
+			 unsigned int frag, unsigned int seq, int rx_queue,
+			 struct sk_buff **skb)
+{
+	struct ieee80211_fragment_entry *entry;
+	int idx;
+
+	idx = sdata->fragment_next;
+	entry = &sdata->fragments[sdata->fragment_next++];
+	if (sdata->fragment_next >= IEEE80211_FRAGMENT_MAX)
+		sdata->fragment_next = 0;
+
+	if (!skb_queue_empty(&entry->skb_list)) {
+#ifdef CONFIG_MAC80211_DEBUG
+		struct ieee80211_hdr *hdr =
+			(struct ieee80211_hdr *) entry->skb_list.next->data;
+		printk(KERN_DEBUG "%s: RX reassembly removed oldest "
+		       "fragment entry (idx=%d age=%lu seq=%d last_frag=%d "
+		       "addr1=" MAC_FMT " addr2=" MAC_FMT "\n",
+		       sdata->dev->name, idx,
+		       jiffies - entry->first_frag_time, entry->seq,
+		       entry->last_frag, MAC_ARG(hdr->addr1),
+		       MAC_ARG(hdr->addr2));
+#endif /* CONFIG_MAC80211_DEBUG */
+		__skb_queue_purge(&entry->skb_list);
+	}
+
+	__skb_queue_tail(&entry->skb_list, *skb); /* no need for locking */
+	*skb = NULL;
+	entry->first_frag_time = jiffies;
+	entry->seq = seq;
+	entry->rx_queue = rx_queue;
+	entry->last_frag = frag;
+	entry->ccmp = 0;
+	entry->extra_len = 0;
+
+	return entry;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
+			  u16 fc, unsigned int frag, unsigned int seq,
+			  int rx_queue, struct ieee80211_hdr *hdr)
+{
+	struct ieee80211_fragment_entry *entry;
+	int i, idx;
+
+	idx = sdata->fragment_next;
+	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+		struct ieee80211_hdr *f_hdr;
+		u16 f_fc;
+
+		idx--;
+		if (idx < 0)
+			idx = IEEE80211_FRAGMENT_MAX - 1;
+
+		entry = &sdata->fragments[idx];
+		if (skb_queue_empty(&entry->skb_list) || entry->seq != seq ||
+		    entry->rx_queue != rx_queue ||
+		    entry->last_frag + 1 != frag)
+			continue;
+
+		f_hdr = (struct ieee80211_hdr *) entry->skb_list.next->data;
+		f_fc = le16_to_cpu(f_hdr->frame_control);
+
+		if ((fc & IEEE80211_FCTL_FTYPE) != (f_fc & IEEE80211_FCTL_FTYPE) ||
+		    compare_ether_addr(hdr->addr1, f_hdr->addr1) != 0 ||
+		    compare_ether_addr(hdr->addr2, f_hdr->addr2) != 0)
+			continue;
+
+		if (entry->first_frag_time + 2 * HZ < jiffies) {
+			__skb_queue_purge(&entry->skb_list);
+			continue;
+		}
+		return entry;
+	}
+
+	return NULL;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_hdr *hdr;
+	u16 sc;
+	unsigned int frag, seq;
+	struct ieee80211_fragment_entry *entry;
+	struct sk_buff *skb;
+
+	hdr = (struct ieee80211_hdr *) rx->skb->data;
+	sc = le16_to_cpu(hdr->seq_ctrl);
+	frag = sc & IEEE80211_SCTL_FRAG;
+
+	if (likely((!(rx->fc & IEEE80211_FCTL_MOREFRAGS) && frag == 0) ||
+		   (rx->skb)->len < 24 ||
+		   is_multicast_ether_addr(hdr->addr1))) {
+		/* not fragmented */
+		goto out;
+	}
+	I802_DEBUG_INC(rx->local->rx_handlers_fragments);
+
+	seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
+
+	if (frag == 0) {
+		/* This is the first fragment of a new frame. */
+		entry = ieee80211_reassemble_add(rx->sdata, frag, seq,
+						 rx->u.rx.queue, &(rx->skb));
+		if (rx->key && rx->key->alg == ALG_CCMP &&
+		    (rx->fc & IEEE80211_FCTL_PROTECTED)) {
+			/* Store CCMP PN so that we can verify that the next
+			 * fragment has a sequential PN value. */
+			entry->ccmp = 1;
+			memcpy(entry->last_pn,
+			       rx->key->u.ccmp.rx_pn[rx->u.rx.queue],
+			       CCMP_PN_LEN);
+		}
+		return TXRX_QUEUED;
+	}
+
+	/* This is a fragment for a frame that should already be pending in
+	 * fragment cache. Add this fragment to the end of the pending entry.
+	 */
+	entry = ieee80211_reassemble_find(rx->sdata, rx->fc, frag, seq,
+					  rx->u.rx.queue, hdr);
+	if (!entry) {
+		I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+		return TXRX_DROP;
+	}
+
+	/* Verify that MPDUs within one MSDU have sequential PN values.
+	 * (IEEE 802.11i, 8.3.3.4.5) */
+	if (entry->ccmp) {
+		int i;
+		u8 pn[CCMP_PN_LEN], *rpn;
+		if (!rx->key || rx->key->alg != ALG_CCMP)
+			return TXRX_DROP;
+		memcpy(pn, entry->last_pn, CCMP_PN_LEN);
+		for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+			pn[i]++;
+			if (pn[i])
+				break;
+		}
+		rpn = rx->key->u.ccmp.rx_pn[rx->u.rx.queue];
+		if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
+			printk(KERN_DEBUG "%s: defrag: CCMP PN not sequential"
+			       " A2=" MAC_FMT " PN=%02x%02x%02x%02x%02x%02x "
+			       "(expected %02x%02x%02x%02x%02x%02x)\n",
+			       rx->dev->name, MAC_ARG(hdr->addr2),
+			       rpn[0], rpn[1], rpn[2], rpn[3], rpn[4], rpn[5],
+			       pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
+			return TXRX_DROP;
+		}
+		memcpy(entry->last_pn, pn, CCMP_PN_LEN);
+	}
+
+	skb_pull(rx->skb, ieee80211_get_hdrlen(rx->fc));
+	__skb_queue_tail(&entry->skb_list, rx->skb);
+	entry->last_frag = frag;
+	entry->extra_len += rx->skb->len;
+	if (rx->fc & IEEE80211_FCTL_MOREFRAGS) {
+		rx->skb = NULL;
+		return TXRX_QUEUED;
+	}
+
+	rx->skb = __skb_dequeue(&entry->skb_list);
+	if (skb_tailroom(rx->skb) < entry->extra_len) {
+		I802_DEBUG_INC(rx->local->rx_expand_skb_head2);
+		if (unlikely(pskb_expand_head(rx->skb, 0, entry->extra_len,
+					      GFP_ATOMIC))) {
+			I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+			__skb_queue_purge(&entry->skb_list);
+			return TXRX_DROP;
+		}
+	}
+	while ((skb = __skb_dequeue(&entry->skb_list)))
+		memcpy(skb_put(rx->skb, skb->len), skb->data, skb->len);
+
+	/* Complete frame has been reassembled - process it now */
+	rx->fragmented = 1;
+
+ out:
+	if (rx->sta)
+		rx->sta->rx_packets++;
+	if (is_multicast_ether_addr(hdr->addr1))
+		rx->local->dot11MulticastReceivedFrameCount++;
+	else
+		ieee80211_led_rx(rx->local);
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_monitor(struct ieee80211_txrx_data *rx)
+{
+	if (rx->sdata->type == IEEE80211_IF_TYPE_MNTR) {
+		ieee80211_rx_monitor(rx->dev, rx->skb, rx->u.rx.status);
+		return TXRX_QUEUED;
+	}
+
+	if (rx->u.rx.status->flag & RX_FLAG_RADIOTAP)
+		skb_pull(rx->skb, ieee80211_get_radiotap_len(rx->skb));
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_hdr *hdr;
+	int always_sta_key;
+	hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+	/* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */
+	if (rx->sta && !is_multicast_ether_addr(hdr->addr1)) {
+		if (unlikely(rx->fc & IEEE80211_FCTL_RETRY &&
+			     rx->sta->last_seq_ctrl[rx->u.rx.queue] ==
+			     hdr->seq_ctrl)) {
+			if (rx->u.rx.ra_match) {
+				rx->local->dot11FrameDuplicateCount++;
+				rx->sta->num_duplicates++;
+			}
+			return TXRX_DROP;
+		} else
+			rx->sta->last_seq_ctrl[rx->u.rx.queue] = hdr->seq_ctrl;
+	}
+
+	if ((rx->local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) &&
+	    rx->skb->len > FCS_LEN)
+		skb_trim(rx->skb, rx->skb->len - FCS_LEN);
+
+	if (unlikely(rx->skb->len < 16)) {
+		I802_DEBUG_INC(rx->local->rx_handlers_drop_short);
+		return TXRX_DROP;
+	}
+
+	if (!rx->u.rx.ra_match)
+		rx->skb->pkt_type = PACKET_OTHERHOST;
+	else if (compare_ether_addr(rx->dev->dev_addr, hdr->addr1) == 0)
+		rx->skb->pkt_type = PACKET_HOST;
+	else if (is_multicast_ether_addr(hdr->addr1)) {
+		if (is_broadcast_ether_addr(hdr->addr1))
+			rx->skb->pkt_type = PACKET_BROADCAST;
+		else
+			rx->skb->pkt_type = PACKET_MULTICAST;
+	} else
+		rx->skb->pkt_type = PACKET_OTHERHOST;
+
+	/* Drop disallowed frame classes based on STA auth/assoc state;
+	 * IEEE 802.11, Chap 5.5.
+	 *
+	 * 80211.o does filtering only based on association state, i.e., it
+	 * drops Class 3 frames from not associated stations. hostapd sends
+	 * deauth/disassoc frames when needed. In addition, hostapd is
+	 * responsible for filtering on both auth and assoc states.
+	 */
+	if (unlikely(((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA ||
+		      ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL &&
+		       (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) &&
+		     rx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+		     (!rx->sta || !(rx->sta->flags & WLAN_STA_ASSOC)))) {
+		if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
+		     !(rx->fc & IEEE80211_FCTL_TODS) &&
+		     (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
+		    || !rx->u.rx.ra_match) {
+			/* Drop IBSS frames and frames for other hosts
+			 * silently. */
+			return TXRX_DROP;
+		}
+
+		if (!rx->local->apdev)
+			return TXRX_DROP;
+
+		ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+				  ieee80211_msg_sta_not_assoc);
+		return TXRX_QUEUED;
+	}
+
+	if (rx->sdata->type == IEEE80211_IF_TYPE_STA)
+		always_sta_key = 0;
+	else
+		always_sta_key = 1;
+
+	if (rx->sta && rx->sta->key && always_sta_key) {
+		rx->key = rx->sta->key;
+	} else {
+		if (rx->sta && rx->sta->key)
+			rx->key = rx->sta->key;
+		else
+			rx->key = rx->sdata->default_key;
+
+		if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
+		    rx->fc & IEEE80211_FCTL_PROTECTED) {
+			int keyidx = ieee80211_wep_get_keyidx(rx->skb);
+
+			if (keyidx >= 0 && keyidx < NUM_DEFAULT_KEYS &&
+			    (!rx->sta || !rx->sta->key || keyidx > 0))
+				rx->key = rx->sdata->keys[keyidx];
+
+			if (!rx->key) {
+				if (!rx->u.rx.ra_match)
+					return TXRX_DROP;
+				printk(KERN_DEBUG "%s: RX WEP frame with "
+				       "unknown keyidx %d (A1=" MAC_FMT " A2="
+				       MAC_FMT " A3=" MAC_FMT ")\n",
+				       rx->dev->name, keyidx,
+				       MAC_ARG(hdr->addr1),
+				       MAC_ARG(hdr->addr2),
+				       MAC_ARG(hdr->addr3));
+				if (!rx->local->apdev)
+					return TXRX_DROP;
+				ieee80211_rx_mgmt(
+					rx->local, rx->skb, rx->u.rx.status,
+					ieee80211_msg_wep_frame_unknown_key);
+				return TXRX_QUEUED;
+			}
+		}
+	}
+
+	if (rx->fc & IEEE80211_FCTL_PROTECTED && rx->key && rx->u.rx.ra_match) {
+		rx->key->tx_rx_count++;
+		if (unlikely(rx->local->key_tx_rx_threshold &&
+			     rx->key->tx_rx_count >
+			     rx->local->key_tx_rx_threshold)) {
+			ieee80211_key_threshold_notify(rx->dev, rx->key,
+						       rx->sta);
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
+{
+	struct sta_info *sta = rx->sta;
+	struct net_device *dev = rx->dev;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+	if (!sta)
+		return TXRX_CONTINUE;
+
+	/* Update last_rx only for IBSS packets which are for the current
+	 * BSSID to avoid keeping the current IBSS network alive in cases where
+	 * other STAs are using different BSSID. */
+	if (rx->sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len);
+		if (compare_ether_addr(bssid, rx->sdata->u.sta.bssid) == 0)
+			sta->last_rx = jiffies;
+	} else
+	if (!is_multicast_ether_addr(hdr->addr1) ||
+	    rx->sdata->type == IEEE80211_IF_TYPE_STA) {
+		/* Update last_rx only for unicast frames in order to prevent
+		 * the Probe Request frames (the only broadcast frames from a
+		 * STA in infrastructure mode) from keeping a connection alive.
+		 */
+		sta->last_rx = jiffies;
+	}
+
+	if (!rx->u.rx.ra_match)
+		return TXRX_CONTINUE;
+
+	sta->rx_fragments++;
+	sta->rx_bytes += rx->skb->len;
+	sta->last_rssi = (sta->last_rssi * 15 +
+			  rx->u.rx.status->ssi) / 16;
+	sta->last_signal = (sta->last_signal * 15 +
+			    rx->u.rx.status->signal) / 16;
+	sta->last_noise = (sta->last_noise * 15 +
+			   rx->u.rx.status->noise) / 16;
+
+	if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) {
+		/* Change STA power saving mode only in the end of a frame
+		 * exchange sequence */
+		if ((sta->flags & WLAN_STA_PS) && !(rx->fc & IEEE80211_FCTL_PM))
+			rx->u.rx.sent_ps_buffered += ap_sta_ps_end(dev, sta);
+		else if (!(sta->flags & WLAN_STA_PS) &&
+			 (rx->fc & IEEE80211_FCTL_PM))
+			ap_sta_ps_start(dev, sta);
+	}
+
+	/* Drop data::nullfunc frames silently, since they are used only to
+	 * control station power saving mode. */
+	if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+	    (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_NULLFUNC) {
+		I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
+		/* Update counter and free packet here to avoid counting this
+		 * as a dropped packed. */
+		sta->rx_packets++;
+		dev_kfree_skb(rx->skb);
+		return TXRX_QUEUED;
+	}
+
+	return TXRX_CONTINUE;
+} /* ieee80211_rx_h_sta_process */
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
+{
+	if (!rx->sta || !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+	    (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+	    !rx->key || rx->key->alg != ALG_WEP || !rx->u.rx.ra_match)
+		return TXRX_CONTINUE;
+
+	/* Check for weak IVs, if hwaccel did not remove IV from the frame */
+	if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) ||
+	    rx->key->force_sw_encrypt) {
+		u8 *iv = ieee80211_wep_is_weak_iv(rx->skb, rx->key);
+		if (iv) {
+			rx->sta->wep_weak_iv_count++;
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_decrypt(struct ieee80211_txrx_data *rx)
+{
+	/* If the device handles decryption totally, skip this test */
+	if (rx->local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP)
+		return TXRX_CONTINUE;
+
+	if ((rx->key && rx->key->alg != ALG_WEP) ||
+	    !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+	    ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+	     ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+	      (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
+		return TXRX_CONTINUE;
+
+	if (!rx->key) {
+		printk(KERN_DEBUG "%s: RX WEP frame, but no key set\n",
+		       rx->dev->name);
+		return TXRX_DROP;
+	}
+
+	if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED) ||
+	    rx->key->force_sw_encrypt) {
+		if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) {
+			printk(KERN_DEBUG "%s: RX WEP frame, decrypt "
+			       "failed\n", rx->dev->name);
+			return TXRX_DROP;
+		}
+	} else if (rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
+		ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
+		/* remove ICV */
+		skb_trim(rx->skb, rx->skb->len - 4);
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_802_1x_pae(struct ieee80211_txrx_data *rx)
+{
+	if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb) &&
+	    rx->sdata->type != IEEE80211_IF_TYPE_STA && rx->u.rx.ra_match) {
+		/* Pass both encrypted and unencrypted EAPOL frames to user
+		 * space for processing. */
+		if (!rx->local->apdev)
+			return TXRX_DROP;
+		ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+				  ieee80211_msg_normal);
+		return TXRX_QUEUED;
+	}
+
+	if (unlikely(rx->sdata->ieee802_1x &&
+		     (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+		     (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
+		     (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)) &&
+		     !ieee80211_is_eapol(rx->skb))) {
+#ifdef CONFIG_MAC80211_DEBUG
+		struct ieee80211_hdr *hdr =
+			(struct ieee80211_hdr *) rx->skb->data;
+		printk(KERN_DEBUG "%s: dropped frame from " MAC_FMT
+		       " (unauthorized port)\n", rx->dev->name,
+		       MAC_ARG(hdr->addr2));
+#endif /* CONFIG_MAC80211_DEBUG */
+		return TXRX_DROP;
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_drop_unencrypted(struct ieee80211_txrx_data *rx)
+{
+	/*  If the device handles decryption totally, skip this test */
+	if (rx->local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP)
+		return TXRX_CONTINUE;
+
+	/* Drop unencrypted frames if key is set. */
+	if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
+		     (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+		     (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
+		     (rx->key || rx->sdata->drop_unencrypted) &&
+		     (rx->sdata->eapol == 0 ||
+		      !ieee80211_is_eapol(rx->skb)))) {
+		printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
+		       "encryption\n", rx->dev->name);
+		return TXRX_DROP;
+	}
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	if (!rx->u.rx.ra_match)
+		return TXRX_DROP;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+	if ((sdata->type == IEEE80211_IF_TYPE_STA ||
+	     sdata->type == IEEE80211_IF_TYPE_IBSS) &&
+	    !rx->local->user_space_mlme) {
+		ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status);
+	} else {
+		/* Management frames are sent to hostapd for processing */
+		if (!rx->local->apdev)
+			return TXRX_DROP;
+		ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+				  ieee80211_msg_normal);
+	}
+	return TXRX_QUEUED;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_local *local = rx->local;
+	struct sk_buff *skb = rx->skb;
+
+	if (unlikely(local->sta_scanning != 0)) {
+		ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status);
+		return TXRX_QUEUED;
+	}
+
+	if (unlikely(rx->u.rx.in_scan)) {
+		/* scanning finished during invoking of handlers */
+		I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
+		return TXRX_DROP;
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+static void ieee80211_rx_michael_mic_report(struct net_device *dev,
+					    struct ieee80211_hdr *hdr,
+					    struct sta_info *sta,
+					    struct ieee80211_txrx_data *rx)
+{
+	int keyidx, hdrlen;
+
+	hdrlen = ieee80211_get_hdrlen_from_skb(rx->skb);
+	if (rx->skb->len >= hdrlen + 4)
+		keyidx = rx->skb->data[hdrlen + 3] >> 6;
+	else
+		keyidx = -1;
+
+	/* TODO: verify that this is not triggered by fragmented
+	 * frames (hw does not verify MIC for them). */
+	printk(KERN_DEBUG "%s: TKIP hwaccel reported Michael MIC "
+	       "failure from " MAC_FMT " to " MAC_FMT " keyidx=%d\n",
+	       dev->name, MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr1), keyidx);
+
+	if (!sta) {
+		/* Some hardware versions seem to generate incorrect
+		 * Michael MIC reports; ignore them to avoid triggering
+		 * countermeasures. */
+		printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+		       "error for unknown address " MAC_FMT "\n",
+		       dev->name, MAC_ARG(hdr->addr2));
+		goto ignore;
+	}
+
+	if (!(rx->fc & IEEE80211_FCTL_PROTECTED)) {
+		printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+		       "error for a frame with no ISWEP flag (src "
+		       MAC_FMT ")\n", dev->name, MAC_ARG(hdr->addr2));
+		goto ignore;
+	}
+
+	if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
+	    rx->sdata->type == IEEE80211_IF_TYPE_AP) {
+		keyidx = ieee80211_wep_get_keyidx(rx->skb);
+		/* AP with Pairwise keys support should never receive Michael
+		 * MIC errors for non-zero keyidx because these are reserved
+		 * for group keys and only the AP is sending real multicast
+		 * frames in BSS. */
+		if (keyidx) {
+			printk(KERN_DEBUG "%s: ignored Michael MIC error for "
+			       "a frame with non-zero keyidx (%d) (src " MAC_FMT
+			       ")\n", dev->name, keyidx, MAC_ARG(hdr->addr2));
+			goto ignore;
+		}
+	}
+
+	if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+	    ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+	     (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)) {
+		printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+		       "error for a frame that cannot be encrypted "
+		       "(fc=0x%04x) (src " MAC_FMT ")\n",
+		       dev->name, rx->fc, MAC_ARG(hdr->addr2));
+		goto ignore;
+	}
+
+	do {
+		union iwreq_data wrqu;
+		char *buf = kmalloc(128, GFP_ATOMIC);
+		if (!buf)
+			break;
+
+		/* TODO: needed parameters: count, key type, TSC */
+		sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+			"keyid=%d %scast addr=" MAC_FMT ")",
+			keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+			MAC_ARG(hdr->addr2));
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.data.length = strlen(buf);
+		wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
+		kfree(buf);
+	} while (0);
+
+	/* TODO: consider verifying the MIC error report with software
+	 * implementation if we get too many spurious reports from the
+	 * hardware. */
+	if (!rx->local->apdev)
+		goto ignore;
+	ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+			  ieee80211_msg_michael_mic_failure);
+	return;
+
+ ignore:
+	dev_kfree_skb(rx->skb);
+	rx->skb = NULL;
+}
+
+static inline ieee80211_txrx_result __ieee80211_invoke_rx_handlers(
+				struct ieee80211_local *local,
+				ieee80211_rx_handler *handlers,
+				struct ieee80211_txrx_data *rx,
+				struct sta_info *sta)
+{
+	ieee80211_rx_handler *handler;
+	ieee80211_txrx_result res = TXRX_DROP;
+
+	for (handler = handlers; *handler != NULL; handler++) {
+		res = (*handler)(rx);
+		if (res != TXRX_CONTINUE) {
+			if (res == TXRX_DROP) {
+				I802_DEBUG_INC(local->rx_handlers_drop);
+				if (sta)
+					sta->rx_dropped++;
+			}
+			if (res == TXRX_QUEUED)
+				I802_DEBUG_INC(local->rx_handlers_queued);
+			break;
+		}
+	}
+
+	if (res == TXRX_DROP) {
+		dev_kfree_skb(rx->skb);
+	}
+	return res;
+}
+
+static inline void ieee80211_invoke_rx_handlers(struct ieee80211_local *local,
+						ieee80211_rx_handler *handlers,
+						struct ieee80211_txrx_data *rx,
+						struct sta_info *sta)
+{
+	if (__ieee80211_invoke_rx_handlers(local, handlers, rx, sta) ==
+	    TXRX_CONTINUE)
+		dev_kfree_skb(rx->skb);
+}
+
+/*
+ * This is the receive path handler. It is called by a low level driver when an
+ * 802.11 MPDU is received from the hardware.
+ */
+void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
+		    struct ieee80211_rx_status *status)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	struct ieee80211_hdr *hdr;
+	struct ieee80211_txrx_data rx;
+	u16 type;
+	int multicast;
+	int radiotap_len = 0;
+
+	if (status->flag & RX_FLAG_RADIOTAP) {
+		radiotap_len = ieee80211_get_radiotap_len(skb);
+		skb_pull(skb, radiotap_len);
+	}
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	memset(&rx, 0, sizeof(rx));
+	rx.skb = skb;
+	rx.local = local;
+
+	rx.u.rx.status = status;
+	rx.fc = skb->len >= 2 ? le16_to_cpu(hdr->frame_control) : 0;
+	type = rx.fc & IEEE80211_FCTL_FTYPE;
+	if (type == IEEE80211_FTYPE_DATA || type == IEEE80211_FTYPE_MGMT)
+		local->dot11ReceivedFragmentCount++;
+	multicast = is_multicast_ether_addr(hdr->addr1);
+
+	if (skb->len >= 16)
+		sta = rx.sta = sta_info_get(local, hdr->addr2);
+	else
+		sta = rx.sta = NULL;
+
+	if (sta) {
+		rx.dev = sta->dev;
+		rx.sdata = IEEE80211_DEV_TO_SUB_IF(rx.dev);
+	}
+
+	if ((status->flag & RX_FLAG_MMIC_ERROR)) {
+		ieee80211_rx_michael_mic_report(local->mdev, hdr, sta, &rx);
+		goto end;
+	}
+
+	if (unlikely(local->sta_scanning))
+		rx.u.rx.in_scan = 1;
+
+	if (__ieee80211_invoke_rx_handlers(local, local->rx_pre_handlers, &rx,
+					   sta) != TXRX_CONTINUE)
+		goto end;
+	skb = rx.skb;
+
+	skb_push(skb, radiotap_len);
+	if (sta && !sta->assoc_ap && !(sta->flags & WLAN_STA_WDS) &&
+	    !local->iff_promiscs && !multicast) {
+		rx.u.rx.ra_match = 1;
+		ieee80211_invoke_rx_handlers(local, local->rx_handlers, &rx,
+					     sta);
+	} else {
+		struct ieee80211_sub_if_data *prev = NULL;
+		struct sk_buff *skb_new;
+		u8 *bssid = ieee80211_get_bssid(hdr, skb->len - radiotap_len);
+
+		read_lock(&local->sub_if_lock);
+		list_for_each_entry(sdata, &local->sub_if_list, list) {
+			rx.u.rx.ra_match = 1;
+			switch (sdata->type) {
+			case IEEE80211_IF_TYPE_STA:
+				if (!bssid)
+					continue;
+				if (!ieee80211_bssid_match(bssid,
+							sdata->u.sta.bssid)) {
+					if (!rx.u.rx.in_scan)
+						continue;
+					rx.u.rx.ra_match = 0;
+				} else if (!multicast &&
+					   compare_ether_addr(sdata->dev->dev_addr,
+							      hdr->addr1) != 0) {
+					if (!sdata->promisc)
+						continue;
+					rx.u.rx.ra_match = 0;
+				}
+				break;
+			case IEEE80211_IF_TYPE_IBSS:
+				if (!bssid)
+					continue;
+				if (!ieee80211_bssid_match(bssid,
+							sdata->u.sta.bssid)) {
+					if (!rx.u.rx.in_scan)
+						continue;
+					rx.u.rx.ra_match = 0;
+				} else if (!multicast &&
+					   compare_ether_addr(sdata->dev->dev_addr,
+							      hdr->addr1) != 0) {
+					if (!sdata->promisc)
+						continue;
+					rx.u.rx.ra_match = 0;
+				} else if (!sta)
+					sta = rx.sta =
+						ieee80211_ibss_add_sta(sdata->dev,
+								       skb, bssid,
+								       hdr->addr2);
+				break;
+			case IEEE80211_IF_TYPE_AP:
+				if (!bssid) {
+					if (compare_ether_addr(sdata->dev->dev_addr,
+							       hdr->addr1) != 0)
+						continue;
+				} else if (!ieee80211_bssid_match(bssid,
+							sdata->dev->dev_addr)) {
+					if (!rx.u.rx.in_scan)
+						continue;
+					rx.u.rx.ra_match = 0;
+				}
+				if (sdata->dev == local->mdev &&
+				    !rx.u.rx.in_scan)
+					/* do not receive anything via
+					 * master device when not scanning */
+					continue;
+				break;
+			case IEEE80211_IF_TYPE_WDS:
+				if (bssid ||
+				    (rx.fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+					continue;
+				if (compare_ether_addr(sdata->u.wds.remote_addr,
+						       hdr->addr2) != 0)
+					continue;
+				break;
+			}
+
+			if (prev) {
+				skb_new = skb_copy(skb, GFP_ATOMIC);
+				if (!skb_new) {
+					if (net_ratelimit())
+						printk(KERN_DEBUG "%s: failed to copy "
+						       "multicast frame for %s",
+						       local->mdev->name, prev->dev->name);
+					continue;
+				}
+				rx.skb = skb_new;
+				rx.dev = prev->dev;
+				rx.sdata = prev;
+				ieee80211_invoke_rx_handlers(local,
+							     local->rx_handlers,
+							     &rx, sta);
+			}
+			prev = sdata;
+		}
+		if (prev) {
+			rx.skb = skb;
+			rx.dev = prev->dev;
+			rx.sdata = prev;
+			ieee80211_invoke_rx_handlers(local, local->rx_handlers,
+						     &rx, sta);
+		} else
+			dev_kfree_skb(skb);
+		read_unlock(&local->sub_if_lock);
+	}
+
+  end:
+	if (sta)
+		sta_info_put(sta);
+}
+EXPORT_SYMBOL(__ieee80211_rx);
+
+static ieee80211_txrx_result
+ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_local *local = tx->local;
+	struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+	struct sk_buff *skb = tx->skb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u32 load = 0, hdrtime;
+
+	/* TODO: this could be part of tx_status handling, so that the number
+	 * of retries would be known; TX rate should in that case be stored
+	 * somewhere with the packet */
+
+	/* Estimate total channel use caused by this frame */
+
+	/* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+	 * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+	if (mode->mode == MODE_IEEE80211A ||
+	    mode->mode == MODE_ATHEROS_TURBO ||
+	    mode->mode == MODE_ATHEROS_TURBOG ||
+	    (mode->mode == MODE_IEEE80211G &&
+	     tx->u.tx.rate->flags & IEEE80211_RATE_ERP))
+		hdrtime = CHAN_UTIL_HDR_SHORT;
+	else
+		hdrtime = CHAN_UTIL_HDR_LONG;
+
+	load = hdrtime;
+	if (!is_multicast_ether_addr(hdr->addr1))
+		load += hdrtime;
+
+	if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
+		load += 2 * hdrtime;
+	else if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
+		load += hdrtime;
+
+	load += skb->len * tx->u.tx.rate->rate_inv;
+
+	if (tx->u.tx.extra_frag) {
+		int i;
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			load += 2 * hdrtime;
+			load += tx->u.tx.extra_frag[i]->len *
+				tx->u.tx.rate->rate;
+		}
+	}
+
+	/* Divide channel_use by 8 to avoid wrapping around the counter */
+	load >>= CHAN_UTIL_SHIFT;
+	local->channel_use_raw += load;
+	if (tx->sta)
+		tx->sta->channel_use_raw += load;
+	tx->sdata->channel_use_raw += load;
+
+	return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_load_stats(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_local *local = rx->local;
+	struct sk_buff *skb = rx->skb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u32 load = 0, hdrtime;
+	struct ieee80211_rate *rate;
+	struct ieee80211_hw_mode *mode = local->hw.conf.mode;
+	int i;
+
+	/* Estimate total channel use caused by this frame */
+
+	if (unlikely(mode->num_rates < 0))
+		return TXRX_CONTINUE;
+
+	rate = &mode->rates[0];
+	for (i = 0; i < mode->num_rates; i++) {
+		if (mode->rates[i].val == rx->u.rx.status->rate) {
+			rate = &mode->rates[i];
+			break;
+		}
+	}
+
+	/* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+	 * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+	if (mode->mode == MODE_IEEE80211A ||
+	    mode->mode == MODE_ATHEROS_TURBO ||
+	    mode->mode == MODE_ATHEROS_TURBOG ||
+	    (mode->mode == MODE_IEEE80211G &&
+	     rate->flags & IEEE80211_RATE_ERP))
+		hdrtime = CHAN_UTIL_HDR_SHORT;
+	else
+		hdrtime = CHAN_UTIL_HDR_LONG;
+
+	load = hdrtime;
+	if (!is_multicast_ether_addr(hdr->addr1))
+		load += hdrtime;
+
+	load += skb->len * rate->rate_inv;
+
+	/* Divide channel_use by 8 to avoid wrapping around the counter */
+	load >>= CHAN_UTIL_SHIFT;
+	local->channel_use_raw += load;
+	if (rx->sta)
+		rx->sta->channel_use_raw += load;
+	rx->u.rx.load = load;
+
+	return TXRX_CONTINUE;
+}
+
+static ieee80211_txrx_result
+ieee80211_rx_h_if_stats(struct ieee80211_txrx_data *rx)
+{
+	rx->sdata->channel_use_raw += rx->u.rx.load;
+	return TXRX_CONTINUE;
+}
+
+static void ieee80211_stat_refresh(unsigned long data)
+{
+	struct ieee80211_local *local = (struct ieee80211_local *) data;
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *sdata;
+
+	if (!local->stat_time)
+		return;
+
+	/* go through all stations */
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		sta->channel_use = (sta->channel_use_raw / local->stat_time) /
+			CHAN_UTIL_PER_10MS;
+		sta->channel_use_raw = 0;
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	/* go through all subinterfaces */
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		sdata->channel_use = (sdata->channel_use_raw /
+				      local->stat_time) / CHAN_UTIL_PER_10MS;
+		sdata->channel_use_raw = 0;
+	}
+	read_unlock(&local->sub_if_lock);
+
+	/* hardware interface */
+	local->channel_use = (local->channel_use_raw /
+			      local->stat_time) / CHAN_UTIL_PER_10MS;
+	local->channel_use_raw = 0;
+
+	local->stat_timer.expires = jiffies + HZ * local->stat_time / 100;
+	add_timer(&local->stat_timer);
+}
+
+
+/* This is a version of the rx handler that can be called from hard irq
+ * context. Post the skb on the queue and schedule the tasklet */
+void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb,
+			  struct ieee80211_rx_status *status)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	BUILD_BUG_ON(sizeof(struct ieee80211_rx_status) > sizeof(skb->cb));
+
+	skb->dev = local->mdev;
+	/* copy status into skb->cb for use by tasklet */
+	memcpy(skb->cb, status, sizeof(*status));
+	skb->pkt_type = IEEE80211_RX_MSG;
+	skb_queue_tail(&local->skb_queue, skb);
+	tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_rx_irqsafe);
+
+void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
+				 struct sk_buff *skb,
+				 struct ieee80211_tx_status *status)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_status *saved;
+	int tmp;
+
+	skb->dev = local->mdev;
+	saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
+	if (unlikely(!saved)) {
+		if (net_ratelimit())
+			printk(KERN_WARNING "%s: Not enough memory, "
+			       "dropping tx status", skb->dev->name);
+		/* should be dev_kfree_skb_irq, but due to this function being
+		 * named _irqsafe instead of just _irq we can't be sure that
+		 * people won't call it from non-irq contexts */
+		dev_kfree_skb_any(skb);
+		return;
+	}
+	memcpy(saved, status, sizeof(struct ieee80211_tx_status));
+	/* copy pointer to saved status into skb->cb for use by tasklet */
+	memcpy(skb->cb, &saved, sizeof(saved));
+
+	skb->pkt_type = IEEE80211_TX_STATUS_MSG;
+	skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
+		       &local->skb_queue : &local->skb_queue_unreliable, skb);
+	tmp = skb_queue_len(&local->skb_queue) +
+		skb_queue_len(&local->skb_queue_unreliable);
+	while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+	       (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+		memcpy(&saved, skb->cb, sizeof(saved));
+		kfree(saved);
+		dev_kfree_skb_irq(skb);
+		tmp--;
+		I802_DEBUG_INC(local->tx_status_drop);
+	}
+	tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+	struct ieee80211_local *local = (struct ieee80211_local *) data;
+	struct sk_buff *skb;
+	struct ieee80211_rx_status rx_status;
+	struct ieee80211_tx_status *tx_status;
+
+	while ((skb = skb_dequeue(&local->skb_queue)) ||
+	       (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+		switch (skb->pkt_type) {
+		case IEEE80211_RX_MSG:
+			/* status is in skb->cb */
+			memcpy(&rx_status, skb->cb, sizeof(rx_status));
+			/* Clear skb->type in order to not confuse kernel
+			 * netstack. */
+			skb->pkt_type = 0;
+			__ieee80211_rx(local_to_hw(local), skb, &rx_status);
+			break;
+		case IEEE80211_TX_STATUS_MSG:
+			/* get pointer to saved status out of skb->cb */
+			memcpy(&tx_status, skb->cb, sizeof(tx_status));
+			skb->pkt_type = 0;
+			ieee80211_tx_status(local_to_hw(local),
+					    skb, tx_status);
+			kfree(tx_status);
+			break;
+		default: /* should never get here! */
+			printk(KERN_ERR "%s: Unknown message type (%d)\n",
+			       local->mdev->name, skb->pkt_type);
+			dev_kfree_skb(skb);
+			break;
+		}
+	}
+}
+
+
+/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
+ * make a prepared TX frame (one that has been given to hw) to look like brand
+ * new IEEE 802.11 frame that is ready to go through TX processing again.
+ * Also, tx_packet_data in cb is restored from tx_control. */
+static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
+				      struct ieee80211_key *key,
+				      struct sk_buff *skb,
+				      struct ieee80211_tx_control *control)
+{
+	int hdrlen, iv_len, mic_len;
+	struct ieee80211_tx_packet_data *pkt_data;
+
+	pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+	pkt_data->ifindex = control->ifindex;
+	pkt_data->mgmt_iface = (control->type == IEEE80211_IF_TYPE_MGMT);
+	pkt_data->req_tx_status = !!(control->flags & IEEE80211_TXCTL_REQ_TX_STATUS);
+	pkt_data->do_not_encrypt = !!(control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT);
+	pkt_data->requeue = !!(control->flags & IEEE80211_TXCTL_REQUEUE);
+	pkt_data->queue = control->queue;
+
+	hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+	if (!key)
+		goto no_key;
+
+	switch (key->alg) {
+	case ALG_WEP:
+		iv_len = WEP_IV_LEN;
+		mic_len = WEP_ICV_LEN;
+		break;
+	case ALG_TKIP:
+		iv_len = TKIP_IV_LEN;
+		mic_len = TKIP_ICV_LEN;
+		break;
+	case ALG_CCMP:
+		iv_len = CCMP_HDR_LEN;
+		mic_len = CCMP_MIC_LEN;
+		break;
+	default:
+		goto no_key;
+	}
+
+	if (skb->len >= mic_len && key->force_sw_encrypt)
+		skb_trim(skb, skb->len - mic_len);
+	if (skb->len >= iv_len && skb->len > hdrlen) {
+		memmove(skb->data + iv_len, skb->data, hdrlen);
+		skb_pull(skb, iv_len);
+	}
+
+no_key:
+	{
+		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+		u16 fc = le16_to_cpu(hdr->frame_control);
+		if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
+			fc &= ~IEEE80211_STYPE_QOS_DATA;
+			hdr->frame_control = cpu_to_le16(fc);
+			memmove(skb->data + 2, skb->data, hdrlen - 2);
+			skb_pull(skb, 2);
+		}
+	}
+}
+
+
+void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+			 struct ieee80211_tx_status *status)
+{
+	struct sk_buff *skb2;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_local *local = hw_to_local(hw);
+	u16 frag, type;
+	u32 msg_type;
+
+	if (!status) {
+		printk(KERN_ERR
+		       "%s: ieee80211_tx_status called with NULL status\n",
+		       local->mdev->name);
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	if (status->excessive_retries) {
+		struct sta_info *sta;
+		sta = sta_info_get(local, hdr->addr1);
+		if (sta) {
+			if (sta->flags & WLAN_STA_PS) {
+				/* The STA is in power save mode, so assume
+				 * that this TX packet failed because of that.
+				 */
+				status->excessive_retries = 0;
+				status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
+			}
+			sta_info_put(sta);
+		}
+	}
+
+	if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
+		struct sta_info *sta;
+		sta = sta_info_get(local, hdr->addr1);
+		if (sta) {
+			sta->tx_filtered_count++;
+
+			/* Clear the TX filter mask for this STA when sending
+			 * the next packet. If the STA went to power save mode,
+			 * this will happen when it is waking up for the next
+			 * time. */
+			sta->clear_dst_mask = 1;
+
+			/* TODO: Is the WLAN_STA_PS flag always set here or is
+			 * the race between RX and TX status causing some
+			 * packets to be filtered out before 80211.o gets an
+			 * update for PS status? This seems to be the case, so
+			 * no changes are likely to be needed. */
+			if (sta->flags & WLAN_STA_PS &&
+			    skb_queue_len(&sta->tx_filtered) <
+			    STA_MAX_TX_BUFFER) {
+				ieee80211_remove_tx_extra(local, sta->key,
+							  skb,
+							  &status->control);
+				skb_queue_tail(&sta->tx_filtered, skb);
+			} else if (!(sta->flags & WLAN_STA_PS) &&
+				   !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
+				/* Software retry the packet once */
+				status->control.flags |= IEEE80211_TXCTL_REQUEUE;
+				ieee80211_remove_tx_extra(local, sta->key,
+							  skb,
+							  &status->control);
+				dev_queue_xmit(skb);
+			} else {
+				if (net_ratelimit()) {
+					printk(KERN_DEBUG "%s: dropped TX "
+					       "filtered frame queue_len=%d "
+					       "PS=%d @%lu\n",
+					       local->mdev->name,
+					       skb_queue_len(
+						       &sta->tx_filtered),
+					       !!(sta->flags & WLAN_STA_PS),
+					       jiffies);
+				}
+				dev_kfree_skb(skb);
+			}
+			sta_info_put(sta);
+			return;
+		}
+	} else {
+		/* FIXME: STUPID to call this with both local and local->mdev */
+		rate_control_tx_status(local, local->mdev, skb, status);
+	}
+
+	ieee80211_led_tx(local, 0);
+
+	/* SNMP counters
+	 * Fragments are passed to low-level drivers as separate skbs, so these
+	 * are actually fragments, not frames. Update frame counters only for
+	 * the first fragment of the frame. */
+
+	frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
+	type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
+
+	if (status->flags & IEEE80211_TX_STATUS_ACK) {
+		if (frag == 0) {
+			local->dot11TransmittedFrameCount++;
+			if (is_multicast_ether_addr(hdr->addr1))
+				local->dot11MulticastTransmittedFrameCount++;
+			if (status->retry_count > 0)
+				local->dot11RetryCount++;
+			if (status->retry_count > 1)
+				local->dot11MultipleRetryCount++;
+		}
+
+		/* This counter shall be incremented for an acknowledged MPDU
+		 * with an individual address in the address 1 field or an MPDU
+		 * with a multicast address in the address 1 field of type Data
+		 * or Management. */
+		if (!is_multicast_ether_addr(hdr->addr1) ||
+		    type == IEEE80211_FTYPE_DATA ||
+		    type == IEEE80211_FTYPE_MGMT)
+			local->dot11TransmittedFragmentCount++;
+	} else {
+		if (frag == 0)
+			local->dot11FailedCount++;
+	}
+
+	if (!(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS)
+	    || unlikely(!local->apdev)) {
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ?
+		ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail;
+
+	/* skb was the original skb used for TX. Clone it and give the clone
+	 * to netif_rx(). Free original skb. */
+	skb2 = skb_copy(skb, GFP_ATOMIC);
+	if (!skb2) {
+		dev_kfree_skb(skb);
+		return;
+	}
+	dev_kfree_skb(skb);
+	skb = skb2;
+
+	/* Send frame to hostapd */
+	ieee80211_rx_mgmt(local, skb, NULL, msg_type);
+}
+EXPORT_SYMBOL(ieee80211_tx_status);
+
+/* TODO: implement register/unregister functions for adding TX/RX handlers
+ * into ordered list */
+
+/* rx_pre handlers don't have dev and sdata fields available in
+ * ieee80211_txrx_data */
+static ieee80211_rx_handler ieee80211_rx_pre_handlers[] =
+{
+	ieee80211_rx_h_parse_qos,
+	ieee80211_rx_h_load_stats,
+	NULL
+};
+
+static ieee80211_rx_handler ieee80211_rx_handlers[] =
+{
+	ieee80211_rx_h_if_stats,
+	ieee80211_rx_h_monitor,
+	ieee80211_rx_h_passive_scan,
+	ieee80211_rx_h_check,
+	ieee80211_rx_h_sta_process,
+	ieee80211_rx_h_ccmp_decrypt,
+	ieee80211_rx_h_tkip_decrypt,
+	ieee80211_rx_h_wep_weak_iv_detection,
+	ieee80211_rx_h_wep_decrypt,
+	ieee80211_rx_h_defragment,
+	ieee80211_rx_h_ps_poll,
+	ieee80211_rx_h_michael_mic_verify,
+	/* this must be after decryption - so header is counted in MPDU mic
+	 * must be before pae and data, so QOS_DATA format frames
+	 * are not passed to user space by these functions
+	 */
+	ieee80211_rx_h_remove_qos_control,
+	ieee80211_rx_h_802_1x_pae,
+	ieee80211_rx_h_drop_unencrypted,
+	ieee80211_rx_h_data,
+	ieee80211_rx_h_mgmt,
+	NULL
+};
+
+static ieee80211_tx_handler ieee80211_tx_handlers[] =
+{
+	ieee80211_tx_h_check_assoc,
+	ieee80211_tx_h_sequence,
+	ieee80211_tx_h_ps_buf,
+	ieee80211_tx_h_select_key,
+	ieee80211_tx_h_michael_mic_add,
+	ieee80211_tx_h_fragment,
+	ieee80211_tx_h_tkip_encrypt,
+	ieee80211_tx_h_ccmp_encrypt,
+	ieee80211_tx_h_wep_encrypt,
+	ieee80211_tx_h_rate_ctrl,
+	ieee80211_tx_h_misc,
+	ieee80211_tx_h_load_stats,
+	NULL
+};
+
+
+int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct sta_info *sta;
+
+	if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
+		return 0;
+
+	/* Create STA entry for the new peer */
+	sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
+	if (!sta)
+		return -ENOMEM;
+	sta_info_put(sta);
+
+	/* Remove STA entry for the old peer */
+	sta = sta_info_get(local, sdata->u.wds.remote_addr);
+	if (sta) {
+		sta_info_put(sta);
+		sta_info_free(sta, 0);
+	} else {
+		printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
+		       "peer " MAC_FMT "\n",
+		       dev->name, MAC_ARG(sdata->u.wds.remote_addr));
+	}
+
+	/* Update WDS link data */
+	memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
+
+	return 0;
+}
+
+/* Must not be called for mdev and apdev */
+void ieee80211_if_setup(struct net_device *dev)
+{
+	ether_setup(dev);
+	dev->hard_start_xmit = ieee80211_subif_start_xmit;
+	dev->wireless_handlers = &ieee80211_iw_handler_def;
+	dev->set_multicast_list = ieee80211_set_multicast_list;
+	dev->change_mtu = ieee80211_change_mtu;
+	dev->get_stats = ieee80211_get_stats;
+	dev->open = ieee80211_open;
+	dev->stop = ieee80211_stop;
+	dev->uninit = ieee80211_if_reinit;
+	dev->destructor = ieee80211_if_free;
+}
+
+void ieee80211_if_mgmt_setup(struct net_device *dev)
+{
+	ether_setup(dev);
+	dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
+	dev->change_mtu = ieee80211_change_mtu_apdev;
+	dev->get_stats = ieee80211_get_stats;
+	dev->open = ieee80211_mgmt_open;
+	dev->stop = ieee80211_mgmt_stop;
+	dev->type = ARPHRD_IEEE80211_PRISM;
+	dev->hard_header_parse = header_parse_80211;
+	dev->uninit = ieee80211_if_reinit;
+	dev->destructor = ieee80211_if_free;
+}
+
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+				 const char *name)
+{
+	struct rate_control_ref *ref, *old;
+
+	ASSERT_RTNL();
+	if (local->open_count || netif_running(local->mdev) ||
+	    (local->apdev && netif_running(local->apdev)))
+		return -EBUSY;
+
+	ref = rate_control_alloc(name, local);
+	if (!ref) {
+		printk(KERN_WARNING "%s: Failed to select rate control "
+		       "algorithm\n", local->mdev->name);
+		return -ENOENT;
+	}
+
+	old = local->rate_ctrl;
+	local->rate_ctrl = ref;
+	if (old) {
+		rate_control_put(old);
+		sta_info_flush(local, NULL);
+	}
+
+	printk(KERN_DEBUG "%s: Selected rate control "
+	       "algorithm '%s'\n", local->mdev->name,
+	       ref->ops->name);
+
+
+	return 0;
+}
+
+static void rate_control_deinitialize(struct ieee80211_local *local)
+{
+	struct rate_control_ref *ref;
+
+	ref = local->rate_ctrl;
+	local->rate_ctrl = NULL;
+	rate_control_put(ref);
+}
+
+struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
+					const struct ieee80211_ops *ops)
+{
+	struct net_device *mdev;
+	struct ieee80211_local *local;
+	struct ieee80211_sub_if_data *sdata;
+	int priv_size;
+	struct wiphy *wiphy;
+
+	/* Ensure 32-byte alignment of our private data and hw private data.
+	 * We use the wiphy priv data for both our ieee80211_local and for
+	 * the driver's private data
+	 *
+	 * In memory it'll be like this:
+	 *
+	 * +-------------------------+
+	 * | struct wiphy	    |
+	 * +-------------------------+
+	 * | struct ieee80211_local  |
+	 * +-------------------------+
+	 * | driver's private data   |
+	 * +-------------------------+
+	 *
+	 */
+	priv_size = ((sizeof(struct ieee80211_local) +
+		      NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
+		    priv_data_len;
+
+	wiphy = wiphy_new(&mac80211_config_ops, priv_size);
+
+	if (!wiphy)
+		return NULL;
+
+	wiphy->privid = mac80211_wiphy_privid;
+
+	local = wiphy_priv(wiphy);
+	local->hw.wiphy = wiphy;
+
+	local->hw.priv = (char *)local +
+			 ((sizeof(struct ieee80211_local) +
+			   NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+
+	local->ops = ops;
+
+	/* for now, mdev needs sub_if_data :/ */
+	mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+			    "wmaster%d", ether_setup);
+	if (!mdev) {
+		wiphy_free(wiphy);
+		return NULL;
+	}
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
+	mdev->ieee80211_ptr = &sdata->wdev;
+	sdata->wdev.wiphy = wiphy;
+
+	local->hw.queues = 1; /* default */
+
+	local->mdev = mdev;
+	local->rx_pre_handlers = ieee80211_rx_pre_handlers;
+	local->rx_handlers = ieee80211_rx_handlers;
+	local->tx_handlers = ieee80211_tx_handlers;
+
+	local->bridge_packets = 1;
+
+	local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+	local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+	local->short_retry_limit = 7;
+	local->long_retry_limit = 4;
+	local->hw.conf.radio_enabled = 1;
+	local->rate_ctrl_num_up = RATE_CONTROL_NUM_UP;
+	local->rate_ctrl_num_down = RATE_CONTROL_NUM_DOWN;
+
+	local->enabled_modes = (unsigned int) -1;
+
+	INIT_LIST_HEAD(&local->modes_list);
+
+	rwlock_init(&local->sub_if_lock);
+	INIT_LIST_HEAD(&local->sub_if_list);
+
+	INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
+	init_timer(&local->stat_timer);
+	local->stat_timer.function = ieee80211_stat_refresh;
+	local->stat_timer.data = (unsigned long) local;
+	ieee80211_rx_bss_list_init(mdev);
+
+	sta_info_init(local);
+
+	mdev->hard_start_xmit = ieee80211_master_start_xmit;
+	mdev->open = ieee80211_master_open;
+	mdev->stop = ieee80211_master_stop;
+	mdev->type = ARPHRD_IEEE80211;
+	mdev->hard_header_parse = header_parse_80211;
+
+	sdata->type = IEEE80211_IF_TYPE_AP;
+	sdata->dev = mdev;
+	sdata->local = local;
+	sdata->u.ap.force_unicast_rateidx = -1;
+	sdata->u.ap.max_ratectrl_rateidx = -1;
+	ieee80211_if_sdata_init(sdata);
+	list_add_tail(&sdata->list, &local->sub_if_list);
+
+	tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
+		     (unsigned long)local);
+	tasklet_disable(&local->tx_pending_tasklet);
+
+	tasklet_init(&local->tasklet,
+		     ieee80211_tasklet_handler,
+		     (unsigned long) local);
+	tasklet_disable(&local->tasklet);
+
+	skb_queue_head_init(&local->skb_queue);
+	skb_queue_head_init(&local->skb_queue_unreliable);
+
+	return local_to_hw(local);
+}
+EXPORT_SYMBOL(ieee80211_alloc_hw);
+
+int ieee80211_register_hw(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	const char *name;
+	int result;
+
+	result = wiphy_register(local->hw.wiphy);
+	if (result < 0)
+		return result;
+
+	name = wiphy_dev(local->hw.wiphy)->driver->name;
+	local->hw.workqueue = create_singlethread_workqueue(name);
+	if (!local->hw.workqueue) {
+		result = -ENOMEM;
+		goto fail_workqueue;
+	}
+
+	local->hw.conf.beacon_int = 1000;
+
+	local->wstats_flags |= local->hw.max_rssi ?
+			       IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
+	local->wstats_flags |= local->hw.max_signal ?
+			       IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
+	local->wstats_flags |= local->hw.max_noise ?
+			       IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
+	if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
+		local->wstats_flags |= IW_QUAL_DBM;
+
+	result = sta_info_start(local);
+	if (result < 0)
+		goto fail_sta_info;
+
+	rtnl_lock();
+	result = dev_alloc_name(local->mdev, local->mdev->name);
+	if (result < 0)
+		goto fail_dev;
+
+	memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+	SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
+
+	result = register_netdevice(local->mdev);
+	if (result < 0)
+		goto fail_dev;
+
+	result = ieee80211_init_rate_ctrl_alg(local, NULL);
+	if (result < 0) {
+		printk(KERN_DEBUG "%s: Failed to initialize rate control "
+		       "algorithm\n", local->mdev->name);
+		goto fail_rate;
+	}
+
+	result = ieee80211_wep_init(local);
+
+	if (result < 0) {
+		printk(KERN_DEBUG "%s: Failed to initialize wep\n",
+		       local->mdev->name);
+		goto fail_wep;
+	}
+
+	ieee80211_install_qdisc(local->mdev);
+
+	/* add one default STA interface */
+	result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
+				  IEEE80211_IF_TYPE_STA);
+	if (result)
+		printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
+		       local->mdev->name);
+
+	local->reg_state = IEEE80211_DEV_REGISTERED;
+	rtnl_unlock();
+
+	ieee80211_led_init(local);
+
+	return 0;
+
+fail_wep:
+	rate_control_deinitialize(local);
+fail_rate:
+	unregister_netdevice(local->mdev);
+fail_dev:
+	rtnl_unlock();
+	sta_info_stop(local);
+fail_sta_info:
+	destroy_workqueue(local->hw.workqueue);
+fail_workqueue:
+	wiphy_unregister(local->hw.wiphy);
+	return result;
+}
+EXPORT_SYMBOL(ieee80211_register_hw);
+
+int ieee80211_register_hwmode(struct ieee80211_hw *hw,
+			      struct ieee80211_hw_mode *mode)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_rate *rate;
+	int i;
+
+	INIT_LIST_HEAD(&mode->list);
+	list_add_tail(&mode->list, &local->modes_list);
+
+	local->hw_modes |= (1 << mode->mode);
+	for (i = 0; i < mode->num_rates; i++) {
+		rate = &(mode->rates[i]);
+		rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
+	}
+	ieee80211_prepare_rates(local, mode);
+
+	if (!local->oper_hw_mode) {
+		/* Default to this mode */
+		local->hw.conf.phymode = mode->mode;
+		local->oper_hw_mode = local->scan_hw_mode = mode;
+		local->oper_channel = local->scan_channel = &mode->channels[0];
+		local->hw.conf.mode = local->oper_hw_mode;
+		local->hw.conf.chan = local->oper_channel;
+	}
+
+	if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED))
+		ieee80211_init_client(local->mdev);
+
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_register_hwmode);
+
+void ieee80211_unregister_hw(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata, *tmp;
+	struct list_head tmp_list;
+	int i;
+
+	tasklet_kill(&local->tx_pending_tasklet);
+	tasklet_kill(&local->tasklet);
+
+	rtnl_lock();
+
+	BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
+
+	local->reg_state = IEEE80211_DEV_UNREGISTERED;
+	if (local->apdev)
+		ieee80211_if_del_mgmt(local);
+
+	write_lock_bh(&local->sub_if_lock);
+	list_replace_init(&local->sub_if_list, &tmp_list);
+	write_unlock_bh(&local->sub_if_lock);
+
+	list_for_each_entry_safe(sdata, tmp, &tmp_list, list)
+		__ieee80211_if_del(local, sdata);
+
+	rtnl_unlock();
+
+	if (local->stat_time)
+		del_timer_sync(&local->stat_timer);
+
+	ieee80211_rx_bss_list_deinit(local->mdev);
+	ieee80211_clear_tx_pending(local);
+	sta_info_stop(local);
+	rate_control_deinitialize(local);
+
+	for (i = 0; i < NUM_IEEE80211_MODES; i++) {
+		kfree(local->supp_rates[i]);
+		kfree(local->basic_rates[i]);
+	}
+
+	if (skb_queue_len(&local->skb_queue)
+			|| skb_queue_len(&local->skb_queue_unreliable))
+		printk(KERN_WARNING "%s: skb_queue not empty\n",
+		       local->mdev->name);
+	skb_queue_purge(&local->skb_queue);
+	skb_queue_purge(&local->skb_queue_unreliable);
+
+	destroy_workqueue(local->hw.workqueue);
+	wiphy_unregister(local->hw.wiphy);
+	ieee80211_wep_free(local);
+	ieee80211_led_exit(local);
+}
+EXPORT_SYMBOL(ieee80211_unregister_hw);
+
+void ieee80211_free_hw(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	ieee80211_if_free(local->mdev);
+	wiphy_free(local->hw.wiphy);
+}
+EXPORT_SYMBOL(ieee80211_free_hw);
+
+void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	if (test_and_clear_bit(IEEE80211_LINK_STATE_XOFF,
+			       &local->state[queue])) {
+		if (test_bit(IEEE80211_LINK_STATE_PENDING,
+			     &local->state[queue]))
+			tasklet_schedule(&local->tx_pending_tasklet);
+		else
+			if (!ieee80211_qdisc_installed(local->mdev)) {
+				if (queue == 0)
+					netif_wake_queue(local->mdev);
+			} else
+				__netif_schedule(local->mdev);
+	}
+}
+EXPORT_SYMBOL(ieee80211_wake_queue);
+
+void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	if (!ieee80211_qdisc_installed(local->mdev) && queue == 0)
+		netif_stop_queue(local->mdev);
+	set_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
+}
+EXPORT_SYMBOL(ieee80211_stop_queue);
+
+void ieee80211_start_queues(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	int i;
+
+	for (i = 0; i < local->hw.queues; i++)
+		clear_bit(IEEE80211_LINK_STATE_XOFF, &local->state[i]);
+	if (!ieee80211_qdisc_installed(local->mdev))
+		netif_start_queue(local->mdev);
+}
+EXPORT_SYMBOL(ieee80211_start_queues);
+
+void ieee80211_stop_queues(struct ieee80211_hw *hw)
+{
+	int i;
+
+	for (i = 0; i < hw->queues; i++)
+		ieee80211_stop_queue(hw, i);
+}
+EXPORT_SYMBOL(ieee80211_stop_queues);
+
+void ieee80211_wake_queues(struct ieee80211_hw *hw)
+{
+	int i;
+
+	for (i = 0; i < hw->queues; i++)
+		ieee80211_wake_queue(hw, i);
+}
+EXPORT_SYMBOL(ieee80211_wake_queues);
+
+struct net_device_stats *ieee80211_dev_stats(struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata;
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	return &sdata->stats;
+}
+
+static int __init ieee80211_init(void)
+{
+	struct sk_buff *skb;
+	int ret;
+
+	BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
+
+	ret = ieee80211_wme_register();
+	if (ret) {
+		printk(KERN_DEBUG "ieee80211_init: failed to "
+		       "initialize WME (err=%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+
+static void __exit ieee80211_exit(void)
+{
+	ieee80211_wme_unregister();
+}
+
+
+module_init(ieee80211_init);
+module_exit(ieee80211_exit);
+
+MODULE_DESCRIPTION("IEEE 802.11 subsystem");
+MODULE_LICENSE("GPL");
diff --git a/net/mac80211/ieee80211_cfg.c b/net/mac80211/ieee80211_cfg.c
new file mode 100644
index 0000000..509096e
--- /dev/null
+++ b/net/mac80211/ieee80211_cfg.c
@@ -0,0 +1,66 @@
+/*
+ * mac80211 configuration hooks for cfg80211
+ *
+ * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This file is GPLv2 as found in COPYING.
+ */
+
+#include <linux/nl80211.h>
+#include <linux/rtnetlink.h>
+#include <net/cfg80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_cfg.h"
+
+static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
+			       unsigned int type)
+{
+	struct ieee80211_local *local = wiphy_priv(wiphy);
+	int itype;
+
+	if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
+		return -ENODEV;
+
+	switch (type) {
+	case NL80211_IFTYPE_UNSPECIFIED:
+		itype = IEEE80211_IF_TYPE_STA;
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		itype = IEEE80211_IF_TYPE_IBSS;
+		break;
+	case NL80211_IFTYPE_STATION:
+		itype = IEEE80211_IF_TYPE_STA;
+		break;
+	case NL80211_IFTYPE_MONITOR:
+		itype = IEEE80211_IF_TYPE_MNTR;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ieee80211_if_add(local->mdev, name, NULL, itype);
+}
+
+static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
+{
+	struct ieee80211_local *local = wiphy_priv(wiphy);
+	struct net_device *dev;
+	char *name;
+
+	if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
+		return -ENODEV;
+
+	dev = dev_get_by_index(ifindex);
+	if (!dev)
+		return 0;
+
+	name = dev->name;
+	dev_put(dev);
+
+	return ieee80211_if_remove(local->mdev, name, -1);
+}
+
+struct cfg80211_ops mac80211_config_ops = {
+	.add_virtual_intf = ieee80211_add_iface,
+	.del_virtual_intf = ieee80211_del_iface,
+};
diff --git a/net/mac80211/ieee80211_cfg.h b/net/mac80211/ieee80211_cfg.h
new file mode 100644
index 0000000..85ed2c9
--- /dev/null
+++ b/net/mac80211/ieee80211_cfg.h
@@ -0,0 +1,9 @@
+/*
+ * mac80211 configuration hooks for cfg80211
+ */
+#ifndef __IEEE80211_CFG_H
+#define __IEEE80211_CFG_H
+
+extern struct cfg80211_ops mac80211_config_ops;
+
+#endif /* __IEEE80211_CFG_H */
diff --git a/net/mac80211/ieee80211_common.h b/net/mac80211/ieee80211_common.h
new file mode 100644
index 0000000..b9a73e7
--- /dev/null
+++ b/net/mac80211/ieee80211_common.h
@@ -0,0 +1,98 @@
+/*
+ * IEEE 802.11 driver (80211.o) -- hostapd interface
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_COMMON_H
+#define IEEE80211_COMMON_H
+
+#include <linux/types.h>
+
+/*
+ * This is common header information with user space. It is used on all
+ * frames sent to wlan#ap interface.
+ */
+
+#define IEEE80211_FI_VERSION 0x80211001
+
+struct ieee80211_frame_info {
+	__be32 version;
+	__be32 length;
+	__be64 mactime;
+	__be64 hosttime;
+	__be32 phytype;
+	__be32 channel;
+	__be32 datarate;
+	__be32 antenna;
+	__be32 priority;
+	__be32 ssi_type;
+	__be32 ssi_signal;
+	__be32 ssi_noise;
+	__be32 preamble;
+	__be32 encoding;
+
+	/* Note: this structure is otherwise identical to capture format used
+	 * in linux-wlan-ng, but this additional field is used to provide meta
+	 * data about the frame to hostapd. This was the easiest method for
+	 * providing this information, but this might change in the future. */
+	__be32 msg_type;
+} __attribute__ ((packed));
+
+
+enum ieee80211_msg_type {
+	ieee80211_msg_normal = 0,
+	ieee80211_msg_tx_callback_ack = 1,
+	ieee80211_msg_tx_callback_fail = 2,
+	ieee80211_msg_passive_scan = 3,
+	ieee80211_msg_wep_frame_unknown_key = 4,
+	ieee80211_msg_michael_mic_failure = 5,
+	/* hole at 6, was monitor but never sent to userspace */
+	ieee80211_msg_sta_not_assoc = 7,
+	ieee80211_msg_set_aid_for_sta = 8 /* used by Intersil MVC driver */,
+	ieee80211_msg_key_threshold_notification = 9,
+	ieee80211_msg_radar = 11,
+};
+
+struct ieee80211_msg_set_aid_for_sta {
+	char	sta_address[ETH_ALEN];
+	u16	aid;
+};
+
+struct ieee80211_msg_key_notification {
+	int tx_rx_count;
+	char ifname[IFNAMSIZ];
+	u8 addr[ETH_ALEN]; /* ff:ff:ff:ff:ff:ff for broadcast keys */
+};
+
+
+enum ieee80211_phytype {
+	ieee80211_phytype_fhss_dot11_97  = 1,
+	ieee80211_phytype_dsss_dot11_97  = 2,
+	ieee80211_phytype_irbaseband     = 3,
+	ieee80211_phytype_dsss_dot11_b   = 4,
+	ieee80211_phytype_pbcc_dot11_b   = 5,
+	ieee80211_phytype_ofdm_dot11_g   = 6,
+	ieee80211_phytype_pbcc_dot11_g   = 7,
+	ieee80211_phytype_ofdm_dot11_a   = 8,
+	ieee80211_phytype_dsss_dot11_turbog = 255,
+	ieee80211_phytype_dsss_dot11_turbo = 256,
+};
+
+enum ieee80211_ssi_type {
+	ieee80211_ssi_none = 0,
+	ieee80211_ssi_norm = 1, /* normalized, 0-1000 */
+	ieee80211_ssi_dbm = 2,
+	ieee80211_ssi_raw = 3, /* raw SSI */
+};
+
+struct ieee80211_radar_info {
+		int channel;
+		int radar;
+		int radar_type;
+};
+
+#endif /* IEEE80211_COMMON_H */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
new file mode 100644
index 0000000..ae94d64
--- /dev/null
+++ b/net/mac80211/ieee80211_i.h
@@ -0,0 +1,671 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_I_H
+#define IEEE80211_I_H
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/if_ether.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <net/wireless.h>
+#include "ieee80211_key.h"
+#include "sta_info.h"
+
+/* ieee80211.o internal definitions, etc. These are not included into
+ * low-level drivers. */
+
+#ifndef ETH_P_PAE
+#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
+#endif /* ETH_P_PAE */
+
+#define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
+
+struct ieee80211_local;
+
+#define BIT(x) (1 << (x))
+
+#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
+
+/* Maximum number of broadcast/multicast frames to buffer when some of the
+ * associated stations are using power saving. */
+#define AP_MAX_BC_BUFFER 128
+
+/* Maximum number of frames buffered to all STAs, including multicast frames.
+ * Note: increasing this limit increases the potential memory requirement. Each
+ * frame can be up to about 2 kB long. */
+#define TOTAL_MAX_TX_BUFFER 512
+
+/* Required encryption head and tailroom */
+#define IEEE80211_ENCRYPT_HEADROOM 8
+#define IEEE80211_ENCRYPT_TAILROOM 12
+
+/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
+ * reception of at least three fragmented frames. This limit can be increased
+ * by changing this define, at the cost of slower frame reassembly and
+ * increased memory use (about 2 kB of RAM per entry). */
+#define IEEE80211_FRAGMENT_MAX 4
+
+struct ieee80211_fragment_entry {
+	unsigned long first_frag_time;
+	unsigned int seq;
+	unsigned int rx_queue;
+	unsigned int last_frag;
+	unsigned int extra_len;
+	struct sk_buff_head skb_list;
+	int ccmp; /* Whether fragments were encrypted with CCMP */
+	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
+};
+
+
+struct ieee80211_sta_bss {
+	struct list_head list;
+	struct ieee80211_sta_bss *hnext;
+	atomic_t users;
+
+	u8 bssid[ETH_ALEN];
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	size_t ssid_len;
+	u16 capability; /* host byte order */
+	int hw_mode;
+	int channel;
+	int freq;
+	int rssi, signal, noise;
+	u8 *wpa_ie;
+	size_t wpa_ie_len;
+	u8 *rsn_ie;
+	size_t rsn_ie_len;
+	u8 *wmm_ie;
+	size_t wmm_ie_len;
+#define IEEE80211_MAX_SUPP_RATES 32
+	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+	size_t supp_rates_len;
+	int beacon_int;
+	u64 timestamp;
+
+	int probe_resp;
+	unsigned long last_update;
+
+};
+
+
+typedef enum {
+	TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
+} ieee80211_txrx_result;
+
+struct ieee80211_txrx_data {
+	struct sk_buff *skb;
+	struct net_device *dev;
+	struct ieee80211_local *local;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	u16 fc, ethertype;
+	struct ieee80211_key *key;
+	unsigned int fragmented:1; /* whether the MSDU was fragmented */
+	union {
+		struct {
+			struct ieee80211_tx_control *control;
+			unsigned int unicast:1;
+			unsigned int ps_buffered:1;
+			unsigned int short_preamble:1;
+			unsigned int probe_last_frag:1;
+			struct ieee80211_hw_mode *mode;
+			struct ieee80211_rate *rate;
+			/* use this rate (if set) for last fragment; rate can
+			 * be set to lower rate for the first fragments, e.g.,
+			 * when using CTS protection with IEEE 802.11g. */
+			struct ieee80211_rate *last_frag_rate;
+			int last_frag_hwrate;
+			int mgmt_interface;
+
+			/* Extra fragments (in addition to the first fragment
+			 * in skb) */
+			int num_extra_frag;
+			struct sk_buff **extra_frag;
+		} tx;
+		struct {
+			struct ieee80211_rx_status *status;
+			int sent_ps_buffered;
+			int queue;
+			int load;
+			unsigned int in_scan:1;
+			/* frame is destined to interface currently processed
+			 * (including multicast frames) */
+			unsigned int ra_match:1;
+		} rx;
+	} u;
+};
+
+/* Stored in sk_buff->cb */
+struct ieee80211_tx_packet_data {
+	int ifindex;
+	unsigned long jiffies;
+	unsigned int req_tx_status:1;
+	unsigned int do_not_encrypt:1;
+	unsigned int requeue:1;
+	unsigned int mgmt_iface:1;
+	unsigned int queue:4;
+};
+
+struct ieee80211_tx_stored_packet {
+	struct ieee80211_tx_control control;
+	struct sk_buff *skb;
+	int num_extra_frag;
+	struct sk_buff **extra_frag;
+	int last_frag_rateidx;
+	int last_frag_hwrate;
+	struct ieee80211_rate *last_frag_rate;
+	unsigned int last_frag_rate_ctrl_probe:1;
+};
+
+typedef ieee80211_txrx_result (*ieee80211_tx_handler)
+(struct ieee80211_txrx_data *tx);
+
+typedef ieee80211_txrx_result (*ieee80211_rx_handler)
+(struct ieee80211_txrx_data *rx);
+
+struct ieee80211_if_ap {
+	u8 *beacon_head, *beacon_tail;
+	int beacon_head_len, beacon_tail_len;
+
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	size_t ssid_len;
+	u8 *generic_elem;
+	size_t generic_elem_len;
+
+	/* yes, this looks ugly, but guarantees that we can later use
+	 * bitmap_empty :)
+	 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
+	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
+	atomic_t num_sta_ps; /* number of stations in PS mode */
+	struct sk_buff_head ps_bc_buf;
+	int dtim_period, dtim_count;
+	int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
+	int max_ratectrl_rateidx; /* max TX rateidx for rate control */
+	int num_beacons; /* number of TXed beacon frames for this BSS */
+};
+
+struct ieee80211_if_wds {
+	u8 remote_addr[ETH_ALEN];
+	struct sta_info *sta;
+};
+
+struct ieee80211_if_vlan {
+	u8 id;
+};
+
+struct ieee80211_if_sta {
+	enum {
+		IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
+		IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
+		IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
+	} state;
+	struct timer_list timer;
+	struct work_struct work;
+	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	size_t ssid_len;
+	u16 aid;
+	u16 ap_capab, capab;
+	u8 *extra_ie; /* to be added to the end of AssocReq */
+	size_t extra_ie_len;
+
+	/* The last AssocReq/Resp IEs */
+	u8 *assocreq_ies, *assocresp_ies;
+	size_t assocreq_ies_len, assocresp_ies_len;
+
+	int auth_tries, assoc_tries;
+
+	unsigned int ssid_set:1;
+	unsigned int bssid_set:1;
+	unsigned int prev_bssid_set:1;
+	unsigned int authenticated:1;
+	unsigned int associated:1;
+	unsigned int probereq_poll:1;
+	unsigned int use_protection:1;
+	unsigned int create_ibss:1;
+	unsigned int mixed_cell:1;
+	unsigned int wmm_enabled:1;
+	unsigned int auto_ssid_sel:1;
+	unsigned int auto_bssid_sel:1;
+	unsigned int auto_channel_sel:1;
+#define IEEE80211_STA_REQ_SCAN 0
+#define IEEE80211_STA_REQ_AUTH 1
+#define IEEE80211_STA_REQ_RUN  2
+	unsigned long request;
+	struct sk_buff_head skb_queue;
+
+	int key_mgmt;
+	unsigned long last_probe;
+
+#define IEEE80211_AUTH_ALG_OPEN BIT(0)
+#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
+#define IEEE80211_AUTH_ALG_LEAP BIT(2)
+	unsigned int auth_algs; /* bitfield of allowed auth algs */
+	int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
+	int auth_transaction;
+
+	unsigned long ibss_join_req;
+	struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
+	u32 supp_rates_bits;
+
+	int wmm_last_param_set;
+};
+
+
+struct ieee80211_sub_if_data {
+	struct list_head list;
+	unsigned int type;
+
+	struct wireless_dev wdev;
+
+	struct net_device *dev;
+	struct ieee80211_local *local;
+
+	int mc_count;
+	unsigned int allmulti:1;
+	unsigned int promisc:1;
+
+	struct net_device_stats stats;
+	int drop_unencrypted;
+	int eapol; /* 0 = process EAPOL frames as normal data frames,
+		    * 1 = send EAPOL frames through wlan#ap to hostapd
+		    *     (default) */
+	int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
+			 * port */
+
+	u16 sequence;
+
+	/* Fragment table for host-based reassembly */
+	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
+	unsigned int fragment_next;
+
+#define NUM_DEFAULT_KEYS 4
+	struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
+	struct ieee80211_key *default_key;
+
+	struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
+
+	union {
+		struct ieee80211_if_ap ap;
+		struct ieee80211_if_wds wds;
+		struct ieee80211_if_vlan vlan;
+		struct ieee80211_if_sta sta;
+	} u;
+	int channel_use;
+	int channel_use_raw;
+};
+
+#define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
+
+enum {
+	IEEE80211_RX_MSG	= 1,
+	IEEE80211_TX_STATUS_MSG	= 2,
+};
+
+struct ieee80211_local {
+	/* embed the driver visible part.
+	 * don't cast (use the static inlines below), but we keep
+	 * it first anyway so they become a no-op */
+	struct ieee80211_hw hw;
+
+	const struct ieee80211_ops *ops;
+
+	/* List of registered struct ieee80211_hw_mode */
+	struct list_head modes_list;
+
+	struct net_device *mdev; /* wmaster# - "master" 802.11 device */
+	struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
+	int open_count;
+	int monitors;
+	struct iw_statistics wstats;
+	u8 wstats_flags;
+
+	enum {
+		IEEE80211_DEV_UNINITIALIZED = 0,
+		IEEE80211_DEV_REGISTERED,
+		IEEE80211_DEV_UNREGISTERED,
+	} reg_state;
+
+	/* Tasklet and skb queue to process calls from IRQ mode. All frames
+	 * added to skb_queue will be processed, but frames in
+	 * skb_queue_unreliable may be dropped if the total length of these
+	 * queues increases over the limit. */
+#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
+	struct tasklet_struct tasklet;
+	struct sk_buff_head skb_queue;
+	struct sk_buff_head skb_queue_unreliable;
+
+	/* Station data structures */
+	spinlock_t sta_lock; /* mutex for STA data structures */
+	int num_sta; /* number of stations in sta_list */
+	struct list_head sta_list;
+	struct list_head deleted_sta_list;
+	struct sta_info *sta_hash[STA_HASH_SIZE];
+	struct timer_list sta_cleanup;
+
+	unsigned long state[NUM_TX_DATA_QUEUES];
+	struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
+	struct tasklet_struct tx_pending_tasklet;
+
+	int mc_count;	/* total count of multicast entries in all interfaces */
+	int iff_allmultis, iff_promiscs;
+			/* number of interfaces with corresponding IFF_ flags */
+
+	struct rate_control_ref *rate_ctrl;
+
+	int next_mode; /* MODE_IEEE80211*
+			* The mode preference for next channel change. This is
+			* used to select .11g vs. .11b channels (or 4.9 GHz vs.
+			* .11a) when the channel number is not unique. */
+
+	/* Supported and basic rate filters for different modes. These are
+	 * pointers to -1 terminated lists and rates in 100 kbps units. */
+	int *supp_rates[NUM_IEEE80211_MODES];
+	int *basic_rates[NUM_IEEE80211_MODES];
+
+	int rts_threshold;
+	int cts_protect_erp_frames;
+	int fragmentation_threshold;
+	int short_retry_limit; /* dot11ShortRetryLimit */
+	int long_retry_limit; /* dot11LongRetryLimit */
+	int short_preamble; /* use short preamble with IEEE 802.11b */
+
+	struct crypto_blkcipher *wep_tx_tfm;
+	struct crypto_blkcipher *wep_rx_tfm;
+	u32 wep_iv;
+	int key_tx_rx_threshold; /* number of times any key can be used in TX
+				  * or RX before generating a rekey
+				  * notification; 0 = notification disabled. */
+
+	int bridge_packets; /* bridge packets between associated stations and
+			     * deliver multicast frames both back to wireless
+			     * media and to the local net stack */
+
+	ieee80211_rx_handler *rx_pre_handlers;
+	ieee80211_rx_handler *rx_handlers;
+	ieee80211_tx_handler *tx_handlers;
+
+	rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
+			       * sta_bss_lock or sta_lock. */
+	struct list_head sub_if_list;
+	int sta_scanning;
+	int scan_channel_idx;
+	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
+	unsigned long last_scan_completed;
+	struct delayed_work scan_work;
+	struct net_device *scan_dev;
+	struct ieee80211_channel *oper_channel, *scan_channel;
+	struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
+	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
+	size_t scan_ssid_len;
+	struct list_head sta_bss_list;
+	struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
+	spinlock_t sta_bss_lock;
+#define IEEE80211_SCAN_MATCH_SSID BIT(0)
+#define IEEE80211_SCAN_WPA_ONLY BIT(1)
+#define IEEE80211_SCAN_EXTRA_INFO BIT(2)
+	int scan_flags;
+
+	/* SNMP counters */
+	/* dot11CountersTable */
+	u32 dot11TransmittedFragmentCount;
+	u32 dot11MulticastTransmittedFrameCount;
+	u32 dot11FailedCount;
+	u32 dot11RetryCount;
+	u32 dot11MultipleRetryCount;
+	u32 dot11FrameDuplicateCount;
+	u32 dot11ReceivedFragmentCount;
+	u32 dot11MulticastReceivedFrameCount;
+	u32 dot11TransmittedFrameCount;
+	u32 dot11WEPUndecryptableCount;
+
+#ifdef CONFIG_MAC80211_LEDS
+	int tx_led_counter, rx_led_counter;
+	struct led_trigger *tx_led, *rx_led;
+	char tx_led_name[32], rx_led_name[32];
+#endif
+
+	u32 channel_use;
+	u32 channel_use_raw;
+	u32 stat_time;
+	struct timer_list stat_timer;
+
+	enum {
+		STA_ANTENNA_SEL_AUTO = 0,
+		STA_ANTENNA_SEL_SW_CTRL = 1,
+		STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
+	} sta_antenna_sel;
+
+	int rate_ctrl_num_up, rate_ctrl_num_down;
+
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	/* TX/RX handler statistics */
+	unsigned int tx_handlers_drop;
+	unsigned int tx_handlers_queued;
+	unsigned int tx_handlers_drop_unencrypted;
+	unsigned int tx_handlers_drop_fragment;
+	unsigned int tx_handlers_drop_wep;
+	unsigned int tx_handlers_drop_not_assoc;
+	unsigned int tx_handlers_drop_unauth_port;
+	unsigned int rx_handlers_drop;
+	unsigned int rx_handlers_queued;
+	unsigned int rx_handlers_drop_nullfunc;
+	unsigned int rx_handlers_drop_defrag;
+	unsigned int rx_handlers_drop_short;
+	unsigned int rx_handlers_drop_passive_scan;
+	unsigned int tx_expand_skb_head;
+	unsigned int tx_expand_skb_head_cloned;
+	unsigned int rx_expand_skb_head;
+	unsigned int rx_expand_skb_head2;
+	unsigned int rx_handlers_fragments;
+	unsigned int tx_status_drop;
+	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#define I802_DEBUG_INC(c) (c)++
+#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
+#define I802_DEBUG_INC(c) do { } while (0)
+#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+
+
+	int default_wep_only; /* only default WEP keys are used with this
+			       * interface; this is used to decide when hwaccel
+			       * can be used with default keys */
+	int total_ps_buffered; /* total number of all buffered unicast and
+				* multicast packets for power saving stations
+				*/
+	int allow_broadcast_always; /* whether to allow TX of broadcast frames
+				     * even when there are no associated STAs
+				     */
+
+	int wifi_wme_noack_test;
+	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
+
+	unsigned int enabled_modes; /* bitfield of allowed modes;
+				      * (1 << MODE_*) */
+	unsigned int hw_modes; /* bitfield of supported hardware modes;
+				* (1 << MODE_*) */
+
+	int user_space_mlme;
+};
+
+static inline struct ieee80211_local *hw_to_local(
+	struct ieee80211_hw *hw)
+{
+	return container_of(hw, struct ieee80211_local, hw);
+}
+
+static inline struct ieee80211_hw *local_to_hw(
+	struct ieee80211_local *local)
+{
+	return &local->hw;
+}
+
+enum ieee80211_link_state_t {
+	IEEE80211_LINK_STATE_XOFF = 0,
+	IEEE80211_LINK_STATE_PENDING,
+};
+
+struct sta_attribute {
+	struct attribute attr;
+	ssize_t (*show)(const struct sta_info *, char *buf);
+	ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
+};
+
+static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
+{
+	/*
+	 * This format has ben mandated by the IEEE specifications,
+	 * so this line may not be changed to use the __set_bit() format.
+	 */
+	bss->tim[(aid)/8] |= 1<<((aid) % 8);
+}
+
+static inline void bss_tim_set(struct ieee80211_local *local,
+			       struct ieee80211_if_ap *bss, int aid)
+{
+	spin_lock_bh(&local->sta_lock);
+	__bss_tim_set(bss, aid);
+	spin_unlock_bh(&local->sta_lock);
+}
+
+static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
+{
+	/*
+	 * This format has ben mandated by the IEEE specifications,
+	 * so this line may not be changed to use the __clear_bit() format.
+	 */
+	bss->tim[(aid)/8] &= !(1<<((aid) % 8));
+}
+
+static inline void bss_tim_clear(struct ieee80211_local *local,
+				 struct ieee80211_if_ap *bss, int aid)
+{
+	spin_lock_bh(&local->sta_lock);
+	__bss_tim_clear(bss, aid);
+	spin_unlock_bh(&local->sta_lock);
+}
+
+/**
+ * ieee80211_is_erp_rate - Check if a rate is an ERP rate
+ * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
+ * @rate: Transmission rate to check, in 100 kbps
+ *
+ * Check if a given rate is an Extended Rate PHY (ERP) rate.
+ */
+static inline int ieee80211_is_erp_rate(int phymode, int rate)
+{
+	if (phymode == MODE_IEEE80211G) {
+		if (rate != 10 && rate != 20 &&
+		    rate != 55 && rate != 110)
+			return 1;
+	}
+	return 0;
+}
+
+/* ieee80211.c */
+int ieee80211_hw_config(struct ieee80211_local *local);
+int ieee80211_if_config(struct net_device *dev);
+int ieee80211_if_config_beacon(struct net_device *dev);
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+			const struct ieee80211_key *data);
+struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
+					  int idx, size_t key_len, gfp_t flags);
+void ieee80211_key_free(struct ieee80211_key *key);
+void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
+		       struct ieee80211_rx_status *status, u32 msg_type);
+void ieee80211_prepare_rates(struct ieee80211_local *local,
+			     struct ieee80211_hw_mode *mode);
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
+int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
+void ieee80211_if_setup(struct net_device *dev);
+void ieee80211_if_mgmt_setup(struct net_device *dev);
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+				 const char *name);
+struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
+
+/* ieee80211_ioctl.c */
+extern const struct iw_handler_def ieee80211_iw_handler_def;
+
+void ieee80211_update_default_wep_only(struct ieee80211_local *local);
+
+
+/* Least common multiple of the used rates (in 100 kbps). This is used to
+ * calculate rate_inv values for each rate so that only integers are needed. */
+#define CHAN_UTIL_RATE_LCM 95040
+/* 1 usec is 1/8 * (95040/10) = 1188 */
+#define CHAN_UTIL_PER_USEC 1188
+/* Amount of bits to shift the result right to scale the total utilization
+ * to values that will not wrap around 32-bit integers. */
+#define CHAN_UTIL_SHIFT 9
+/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
+ * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
+ * raw value with about 23 should give utilization in 10th of a percentage
+ * (1/1000). However, utilization is only estimated and not all intervals
+ * between frames etc. are calculated. 18 seems to give numbers that are closer
+ * to the real maximum. */
+#define CHAN_UTIL_PER_10MS 18
+#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
+#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
+
+
+/* ieee80211_ioctl.c */
+int ieee80211_set_compression(struct ieee80211_local *local,
+			      struct net_device *dev, struct sta_info *sta);
+int ieee80211_init_client(struct net_device *dev);
+int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
+/* ieee80211_sta.c */
+void ieee80211_sta_timer(unsigned long data);
+void ieee80211_sta_work(struct work_struct *work);
+void ieee80211_sta_scan_work(struct work_struct *work);
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status);
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
+void ieee80211_sta_req_auth(struct net_device *dev,
+			    struct ieee80211_if_sta *ifsta);
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
+void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status);
+void ieee80211_rx_bss_list_init(struct net_device *dev);
+void ieee80211_rx_bss_list_deinit(struct net_device *dev);
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+					 struct sk_buff *skb, u8 *bssid,
+					 u8 *addr);
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
+
+/* ieee80211_iface.c */
+int ieee80211_if_add(struct net_device *dev, const char *name,
+		     struct net_device **new_dev, int type);
+void ieee80211_if_set_type(struct net_device *dev, int type);
+void ieee80211_if_reinit(struct net_device *dev);
+void __ieee80211_if_del(struct ieee80211_local *local,
+			struct ieee80211_sub_if_data *sdata);
+int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
+void ieee80211_if_free(struct net_device *dev);
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
+int ieee80211_if_add_mgmt(struct ieee80211_local *local);
+void ieee80211_if_del_mgmt(struct ieee80211_local *local);
+
+/* for wiphy privid */
+extern void *mac80211_wiphy_privid;
+
+#endif /* IEEE80211_I_H */
diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c
new file mode 100644
index 0000000..64267d4
--- /dev/null
+++ b/net/mac80211/ieee80211_iface.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+	int i;
+
+	/* Default values for sub-interface parameters */
+	sdata->drop_unencrypted = 0;
+	sdata->eapol = 1;
+	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+		skb_queue_head_init(&sdata->fragments[i].skb_list);
+}
+
+static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
+{
+	int i;
+
+	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+		__skb_queue_purge(&sdata->fragments[i].skb_list);
+	}
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_add(struct net_device *dev, const char *name,
+		     struct net_device **new_dev, int type)
+{
+	struct net_device *ndev;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = NULL;
+	int ret;
+
+	ASSERT_RTNL();
+	ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+			    name, ieee80211_if_setup);
+	if (!ndev)
+		return -ENOMEM;
+
+	ret = dev_alloc_name(ndev, ndev->name);
+	if (ret < 0)
+		goto fail;
+
+	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+	ndev->base_addr = dev->base_addr;
+	ndev->irq = dev->irq;
+	ndev->mem_start = dev->mem_start;
+	ndev->mem_end = dev->mem_end;
+	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+	ndev->ieee80211_ptr = &sdata->wdev;
+	sdata->wdev.wiphy = local->hw.wiphy;
+	sdata->type = IEEE80211_IF_TYPE_AP;
+	sdata->dev = ndev;
+	sdata->local = local;
+	ieee80211_if_sdata_init(sdata);
+
+	ret = register_netdevice(ndev);
+	if (ret)
+		goto fail;
+
+	ieee80211_if_set_type(ndev, type);
+
+	write_lock_bh(&local->sub_if_lock);
+	if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
+		write_unlock_bh(&local->sub_if_lock);
+		__ieee80211_if_del(local, sdata);
+		return -ENODEV;
+	}
+	list_add(&sdata->list, &local->sub_if_list);
+	if (new_dev)
+		*new_dev = ndev;
+	write_unlock_bh(&local->sub_if_lock);
+
+	ieee80211_update_default_wep_only(local);
+
+	return 0;
+
+fail:
+	free_netdev(ndev);
+	return ret;
+}
+
+int ieee80211_if_add_mgmt(struct ieee80211_local *local)
+{
+	struct net_device *ndev;
+	struct ieee80211_sub_if_data *nsdata;
+	int ret;
+
+	ASSERT_RTNL();
+
+	ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), "wmgmt%d",
+			    ieee80211_if_mgmt_setup);
+	if (!ndev)
+		return -ENOMEM;
+	ret = dev_alloc_name(ndev, ndev->name);
+	if (ret < 0)
+		goto fail;
+
+	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+	nsdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+	ndev->ieee80211_ptr = &nsdata->wdev;
+	nsdata->wdev.wiphy = local->hw.wiphy;
+	nsdata->type = IEEE80211_IF_TYPE_MGMT;
+	nsdata->dev = ndev;
+	nsdata->local = local;
+	ieee80211_if_sdata_init(nsdata);
+
+	ret = register_netdevice(ndev);
+	if (ret)
+		goto fail;
+
+	if (local->open_count > 0)
+		dev_open(ndev);
+	local->apdev = ndev;
+	return 0;
+
+fail:
+	free_netdev(ndev);
+	return ret;
+}
+
+void ieee80211_if_del_mgmt(struct ieee80211_local *local)
+{
+	struct net_device *apdev;
+
+	ASSERT_RTNL();
+	apdev = local->apdev;
+	local->apdev = NULL;
+	unregister_netdevice(apdev);
+}
+
+void ieee80211_if_set_type(struct net_device *dev, int type)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	sdata->type = type;
+	switch (type) {
+	case IEEE80211_IF_TYPE_WDS:
+		sdata->bss = NULL;
+		break;
+	case IEEE80211_IF_TYPE_VLAN:
+		break;
+	case IEEE80211_IF_TYPE_AP:
+		sdata->u.ap.dtim_period = 2;
+		sdata->u.ap.force_unicast_rateidx = -1;
+		sdata->u.ap.max_ratectrl_rateidx = -1;
+		skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+		sdata->bss = &sdata->u.ap;
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS: {
+		struct ieee80211_sub_if_data *msdata;
+		struct ieee80211_if_sta *ifsta;
+
+		ifsta = &sdata->u.sta;
+		INIT_WORK(&ifsta->work, ieee80211_sta_work);
+		setup_timer(&ifsta->timer, ieee80211_sta_timer,
+			    (unsigned long) sdata);
+		skb_queue_head_init(&ifsta->skb_queue);
+
+		ifsta->capab = WLAN_CAPABILITY_ESS;
+		ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+			IEEE80211_AUTH_ALG_SHARED_KEY;
+		ifsta->create_ibss = 1;
+		ifsta->wmm_enabled = 1;
+		ifsta->auto_channel_sel = 1;
+		ifsta->auto_bssid_sel = 1;
+
+		msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
+		sdata->bss = &msdata->u.ap;
+		break;
+	}
+	case IEEE80211_IF_TYPE_MNTR:
+		dev->type = ARPHRD_IEEE80211_RADIOTAP;
+		break;
+	default:
+		printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
+		       dev->name, __FUNCTION__, type);
+	}
+	ieee80211_update_default_wep_only(local);
+}
+
+/* Must be called with rtnl lock held. */
+void ieee80211_if_reinit(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct sta_info *sta;
+	int i;
+
+	ASSERT_RTNL();
+	ieee80211_if_sdata_deinit(sdata);
+	for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+		if (!sdata->keys[i])
+			continue;
+#if 0
+		/* The interface is down at the moment, so there is not
+		 * really much point in disabling the keys at this point. */
+		memset(addr, 0xff, ETH_ALEN);
+		if (local->ops->set_key)
+			local->ops->set_key(local_to_hw(local), DISABLE_KEY, addr,
+					    local->keys[i], 0);
+#endif
+		ieee80211_key_free(sdata->keys[i]);
+		sdata->keys[i] = NULL;
+	}
+
+	switch (sdata->type) {
+	case IEEE80211_IF_TYPE_AP: {
+		/* Remove all virtual interfaces that use this BSS
+		 * as their sdata->bss */
+		struct ieee80211_sub_if_data *tsdata, *n;
+		LIST_HEAD(tmp_list);
+
+		write_lock_bh(&local->sub_if_lock);
+		list_for_each_entry_safe(tsdata, n, &local->sub_if_list, list) {
+			if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
+				printk(KERN_DEBUG "%s: removing virtual "
+				       "interface %s because its BSS interface"
+				       " is being removed\n",
+				       sdata->dev->name, tsdata->dev->name);
+				list_move_tail(&tsdata->list, &tmp_list);
+			}
+		}
+		write_unlock_bh(&local->sub_if_lock);
+
+		list_for_each_entry_safe(tsdata, n, &tmp_list, list)
+			__ieee80211_if_del(local, tsdata);
+
+		kfree(sdata->u.ap.beacon_head);
+		kfree(sdata->u.ap.beacon_tail);
+		kfree(sdata->u.ap.generic_elem);
+
+		if (dev != local->mdev) {
+			struct sk_buff *skb;
+			while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
+				local->total_ps_buffered--;
+				dev_kfree_skb(skb);
+			}
+		}
+
+		break;
+	}
+	case IEEE80211_IF_TYPE_WDS:
+		sta = sta_info_get(local, sdata->u.wds.remote_addr);
+		if (sta) {
+			sta_info_put(sta);
+			sta_info_free(sta, 0);
+		} else {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+			printk(KERN_DEBUG "%s: Someone had deleted my STA "
+			       "entry for the WDS link\n", dev->name);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+		}
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS:
+		kfree(sdata->u.sta.extra_ie);
+		sdata->u.sta.extra_ie = NULL;
+		kfree(sdata->u.sta.assocreq_ies);
+		sdata->u.sta.assocreq_ies = NULL;
+		kfree(sdata->u.sta.assocresp_ies);
+		sdata->u.sta.assocresp_ies = NULL;
+		if (sdata->u.sta.probe_resp) {
+			dev_kfree_skb(sdata->u.sta.probe_resp);
+			sdata->u.sta.probe_resp = NULL;
+		}
+
+		break;
+	case IEEE80211_IF_TYPE_MNTR:
+		dev->type = ARPHRD_ETHER;
+		break;
+	}
+
+	/* remove all STAs that are bound to this virtual interface */
+	sta_info_flush(local, dev);
+
+	memset(&sdata->u, 0, sizeof(sdata->u));
+	ieee80211_if_sdata_init(sdata);
+}
+
+/* Must be called with rtnl lock held. */
+void __ieee80211_if_del(struct ieee80211_local *local,
+			struct ieee80211_sub_if_data *sdata)
+{
+	struct net_device *dev = sdata->dev;
+
+	unregister_netdevice(dev);
+	/* Except master interface, the net_device will be freed by
+	 * net_device->destructor (i. e. ieee80211_if_free). */
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata, *n;
+
+	ASSERT_RTNL();
+
+	write_lock_bh(&local->sub_if_lock);
+	list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
+		if ((sdata->type == id || id == -1) &&
+		    strcmp(name, sdata->dev->name) == 0 &&
+		    sdata->dev != local->mdev) {
+			list_del(&sdata->list);
+			write_unlock_bh(&local->sub_if_lock);
+			__ieee80211_if_del(local, sdata);
+			ieee80211_update_default_wep_only(local);
+			return 0;
+		}
+	}
+	write_unlock_bh(&local->sub_if_lock);
+	return -ENODEV;
+}
+
+void ieee80211_if_free(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	/* local->apdev must be NULL when freeing management interface */
+	BUG_ON(dev == local->apdev);
+	ieee80211_if_sdata_deinit(sdata);
+	free_netdev(dev);
+}
diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
new file mode 100644
index 0000000..73909ec
--- /dev/null
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -0,0 +1,1806 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <asm/uaccess.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "hostapd_ioctl.h"
+#include "ieee80211_rate.h"
+#include "wpa.h"
+#include "aes_ccm.h"
+
+static int ieee80211_regdom = 0x10; /* FCC */
+module_param(ieee80211_regdom, int, 0444);
+MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK");
+
+/*
+ * If firmware is upgraded by the vendor, additional channels can be used based
+ * on the new Japanese regulatory rules. This is indicated by setting
+ * ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel
+ * module.
+ */
+static int ieee80211_japan_5ghz /* = 0 */;
+module_param(ieee80211_japan_5ghz, int, 0444);
+MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz");
+
+static void ieee80211_set_hw_encryption(struct net_device *dev,
+					struct sta_info *sta, u8 addr[ETH_ALEN],
+					struct ieee80211_key *key)
+{
+	struct ieee80211_key_conf *keyconf = NULL;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	/* default to sw encryption; this will be cleared by low-level
+	 * driver if the hw supports requested encryption */
+	if (key)
+		key->force_sw_encrypt = 1;
+
+	if (key && local->ops->set_key &&
+	    (keyconf = ieee80211_key_data2conf(local, key))) {
+		if (local->ops->set_key(local_to_hw(local), SET_KEY, addr,
+				       keyconf, sta ? sta->aid : 0)) {
+			key->force_sw_encrypt = 1;
+			key->hw_key_idx = HW_KEY_IDX_INVALID;
+		} else {
+			key->force_sw_encrypt =
+				!!(keyconf->flags & IEEE80211_KEY_FORCE_SW_ENCRYPT);
+			key->hw_key_idx =
+				keyconf->hw_key_idx;
+
+		}
+	}
+	kfree(keyconf);
+}
+
+
+static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
+				    int idx, int alg, int set_tx_key,
+				    const u8 *_key, size_t key_len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	int ret = 0;
+	struct sta_info *sta;
+	struct ieee80211_key *key, *old_key;
+	int try_hwaccel = 1;
+	struct ieee80211_key_conf *keyconf;
+	struct ieee80211_sub_if_data *sdata;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (is_broadcast_ether_addr(sta_addr)) {
+		sta = NULL;
+		if (idx >= NUM_DEFAULT_KEYS) {
+			printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
+			       dev->name, idx);
+			return -EINVAL;
+		}
+		key = sdata->keys[idx];
+
+		/* TODO: consider adding hwaccel support for these; at least
+		 * Atheros key cache should be able to handle this since AP is
+		 * only transmitting frames with default keys. */
+		/* FIX: hw key cache can be used when only one virtual
+		 * STA is associated with each AP. If more than one STA
+		 * is associated to the same AP, software encryption
+		 * must be used. This should be done automatically
+		 * based on configured station devices. For the time
+		 * being, this can be only set at compile time. */
+	} else {
+		set_tx_key = 0;
+		if (idx != 0) {
+			printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
+			       "individual key\n", dev->name);
+			return -EINVAL;
+		}
+
+		sta = sta_info_get(local, sta_addr);
+		if (!sta) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+			printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
+			       MAC_FMT "\n",
+			       dev->name, MAC_ARG(sta_addr));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+			return -ENOENT;
+		}
+
+		key = sta->key;
+	}
+
+	/* FIX:
+	 * Cannot configure default hwaccel keys with WEP algorithm, if
+	 * any of the virtual interfaces is using static WEP
+	 * configuration because hwaccel would otherwise try to decrypt
+	 * these frames.
+	 *
+	 * For now, just disable WEP hwaccel for broadcast when there is
+	 * possibility of conflict with default keys. This can maybe later be
+	 * optimized by using non-default keys (at least with Atheros ar521x).
+	 */
+	if (!sta && alg == ALG_WEP && !local->default_wep_only &&
+	    sdata->type != IEEE80211_IF_TYPE_IBSS &&
+	    sdata->type != IEEE80211_IF_TYPE_AP) {
+		try_hwaccel = 0;
+	}
+
+	if (local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP) {
+		/* Software encryption cannot be used with devices that hide
+		 * encryption from the host system, so always try to use
+		 * hardware acceleration with such devices. */
+		try_hwaccel = 1;
+	}
+
+	if ((local->hw.flags & IEEE80211_HW_NO_TKIP_WMM_HWACCEL) &&
+	    alg == ALG_TKIP) {
+		if (sta && (sta->flags & WLAN_STA_WME)) {
+		/* Hardware does not support hwaccel with TKIP when using WMM.
+		 */
+			try_hwaccel = 0;
+		}
+		else if (sdata->type == IEEE80211_IF_TYPE_STA) {
+			sta = sta_info_get(local, sdata->u.sta.bssid);
+			if (sta) {
+				if (sta->flags & WLAN_STA_WME) {
+					try_hwaccel = 0;
+				}
+				sta_info_put(sta);
+				sta = NULL;
+			}
+		}
+	}
+
+	if (alg == ALG_NONE) {
+		keyconf = NULL;
+		if (try_hwaccel && key &&
+		    key->hw_key_idx != HW_KEY_IDX_INVALID &&
+		    local->ops->set_key &&
+		    (keyconf = ieee80211_key_data2conf(local, key)) != NULL &&
+		    local->ops->set_key(local_to_hw(local), DISABLE_KEY,
+				       sta_addr, keyconf, sta ? sta->aid : 0)) {
+			printk(KERN_DEBUG "%s: set_encrypt - low-level disable"
+			       " failed\n", dev->name);
+			ret = -EINVAL;
+		}
+		kfree(keyconf);
+
+		if (set_tx_key || sdata->default_key == key)
+			sdata->default_key = NULL;
+		if (sta)
+			sta->key = NULL;
+		else
+			sdata->keys[idx] = NULL;
+		ieee80211_key_free(key);
+		key = NULL;
+	} else {
+		old_key = key;
+		key = ieee80211_key_alloc(sta ? NULL : sdata, idx, key_len,
+					  GFP_KERNEL);
+		if (!key) {
+			ret = -ENOMEM;
+			goto err_out;
+		}
+
+		/* default to sw encryption; low-level driver sets these if the
+		 * requested encryption is supported */
+		key->hw_key_idx = HW_KEY_IDX_INVALID;
+		key->force_sw_encrypt = 1;
+
+		key->alg = alg;
+		key->keyidx = idx;
+		key->keylen = key_len;
+		memcpy(key->key, _key, key_len);
+		if (set_tx_key)
+			key->default_tx_key = 1;
+
+		if (alg == ALG_CCMP) {
+			/* Initialize AES key state here as an optimization
+			 * so that it does not need to be initialized for every
+			 * packet. */
+			key->u.ccmp.tfm = ieee80211_aes_key_setup_encrypt(
+				key->key);
+			if (!key->u.ccmp.tfm) {
+				ret = -ENOMEM;
+				goto err_free;
+			}
+		}
+
+		if (set_tx_key || sdata->default_key == old_key)
+			sdata->default_key = NULL;
+		if (sta)
+			sta->key = key;
+		else
+			sdata->keys[idx] = key;
+		ieee80211_key_free(old_key);
+
+		if (try_hwaccel &&
+		    (alg == ALG_WEP || alg == ALG_TKIP || alg == ALG_CCMP))
+			ieee80211_set_hw_encryption(dev, sta, sta_addr, key);
+	}
+
+	if (set_tx_key || (!sta && !sdata->default_key && key)) {
+		sdata->default_key = key;
+
+		if (local->ops->set_key_idx &&
+		    local->ops->set_key_idx(local_to_hw(local), idx))
+			printk(KERN_DEBUG "%s: failed to set TX key idx for "
+			       "low-level driver\n", dev->name);
+	}
+
+	if (sta)
+		sta_info_put(sta);
+
+	return 0;
+
+err_free:
+	ieee80211_key_free(key);
+err_out:
+	if (sta)
+		sta_info_put(sta);
+	return ret;
+}
+
+static int ieee80211_ioctl_siwgenie(struct net_device *dev,
+				    struct iw_request_info *info,
+				    struct iw_point *data, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (local->user_space_mlme)
+		return -EOPNOTSUPP;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
+		if (ret)
+			return ret;
+		sdata->u.sta.auto_bssid_sel = 0;
+		ieee80211_sta_req_auth(dev, &sdata->u.sta);
+		return 0;
+	}
+
+	if (sdata->type == IEEE80211_IF_TYPE_AP) {
+		kfree(sdata->u.ap.generic_elem);
+		sdata->u.ap.generic_elem = kmalloc(data->length, GFP_KERNEL);
+		if (!sdata->u.ap.generic_elem)
+			return -ENOMEM;
+		memcpy(sdata->u.ap.generic_elem, extra, data->length);
+		sdata->u.ap.generic_elem_len = data->length;
+		return ieee80211_if_config(dev);
+	}
+	return -EOPNOTSUPP;
+}
+
+static int ieee80211_ioctl_set_radio_enabled(struct net_device *dev,
+					     int val)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_conf *conf = &local->hw.conf;
+
+	conf->radio_enabled = val;
+	return ieee80211_hw_config(wdev_priv(dev->ieee80211_ptr));
+}
+
+static int ieee80211_ioctl_giwname(struct net_device *dev,
+				   struct iw_request_info *info,
+				   char *name, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	switch (local->hw.conf.phymode) {
+	case MODE_IEEE80211A:
+		strcpy(name, "IEEE 802.11a");
+		break;
+	case MODE_IEEE80211B:
+		strcpy(name, "IEEE 802.11b");
+		break;
+	case MODE_IEEE80211G:
+		strcpy(name, "IEEE 802.11g");
+		break;
+	case MODE_ATHEROS_TURBO:
+		strcpy(name, "5GHz Turbo");
+		break;
+	default:
+		strcpy(name, "IEEE 802.11");
+		break;
+	}
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_giwrange(struct net_device *dev,
+				 struct iw_request_info *info,
+				 struct iw_point *data, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct iw_range *range = (struct iw_range *) extra;
+
+	data->length = sizeof(struct iw_range);
+	memset(range, 0, sizeof(struct iw_range));
+
+	range->we_version_compiled = WIRELESS_EXT;
+	range->we_version_source = 21;
+	range->retry_capa = IW_RETRY_LIMIT;
+	range->retry_flags = IW_RETRY_LIMIT;
+	range->min_retry = 0;
+	range->max_retry = 255;
+	range->min_rts = 0;
+	range->max_rts = 2347;
+	range->min_frag = 256;
+	range->max_frag = 2346;
+
+	range->encoding_size[0] = 5;
+	range->encoding_size[1] = 13;
+	range->num_encoding_sizes = 2;
+	range->max_encoding_tokens = NUM_DEFAULT_KEYS;
+
+	range->max_qual.qual = local->hw.max_signal;
+	range->max_qual.level = local->hw.max_rssi;
+	range->max_qual.noise = local->hw.max_noise;
+	range->max_qual.updated = local->wstats_flags;
+
+	range->avg_qual.qual = local->hw.max_signal/2;
+	range->avg_qual.level = 0;
+	range->avg_qual.noise = 0;
+	range->avg_qual.updated = local->wstats_flags;
+
+	range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
+			  IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
+
+	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
+	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
+	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
+	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
+
+	return 0;
+}
+
+
+struct ieee80211_channel_range {
+	short start_freq;
+	short end_freq;
+	unsigned char power_level;
+	unsigned char antenna_max;
+};
+
+static const struct ieee80211_channel_range ieee80211_fcc_channels[] = {
+	{ 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */,
+	{ 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */,
+	{ 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */,
+	{ 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */,
+	{ 0 }
+};
+
+static const struct ieee80211_channel_range ieee80211_mkk_channels[] = {
+	{ 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */,
+	{ 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */,
+	{ 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */,
+	{ 0 }
+};
+
+
+static const struct ieee80211_channel_range *channel_range =
+	ieee80211_fcc_channels;
+
+
+static void ieee80211_unmask_channel(struct net_device *dev, int mode,
+				     struct ieee80211_channel *chan)
+{
+	int i;
+
+	chan->flag = 0;
+
+	if (ieee80211_regdom == 64 &&
+	    (mode == MODE_ATHEROS_TURBO || mode == MODE_ATHEROS_TURBOG)) {
+		/* Do not allow Turbo modes in Japan. */
+		return;
+	}
+
+	for (i = 0; channel_range[i].start_freq; i++) {
+		const struct ieee80211_channel_range *r = &channel_range[i];
+		if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) {
+			if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz &&
+			    chan->freq >= 5260 && chan->freq <= 5320) {
+				/*
+				 * Skip new channels in Japan since the
+				 * firmware was not marked having been upgraded
+				 * by the vendor.
+				 */
+				continue;
+			}
+
+			if (ieee80211_regdom == 0x10 &&
+			    (chan->freq == 5190 || chan->freq == 5210 ||
+			     chan->freq == 5230)) {
+				    /* Skip MKK channels when in FCC domain. */
+				    continue;
+			}
+
+			chan->flag |= IEEE80211_CHAN_W_SCAN |
+				IEEE80211_CHAN_W_ACTIVE_SCAN |
+				IEEE80211_CHAN_W_IBSS;
+			chan->power_level = r->power_level;
+			chan->antenna_max = r->antenna_max;
+
+			if (ieee80211_regdom == 64 &&
+			    (chan->freq == 5170 || chan->freq == 5190 ||
+			     chan->freq == 5210 || chan->freq == 5230)) {
+				/*
+				 * New regulatory rules in Japan have backwards
+				 * compatibility with old channels in 5.15-5.25
+				 * GHz band, but the station is not allowed to
+				 * use active scan on these old channels.
+				 */
+				chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN;
+			}
+
+			if (ieee80211_regdom == 64 &&
+			    (chan->freq == 5260 || chan->freq == 5280 ||
+			     chan->freq == 5300 || chan->freq == 5320)) {
+				/*
+				 * IBSS is not allowed on 5.25-5.35 GHz band
+				 * due to radar detection requirements.
+				 */
+				chan->flag &= ~IEEE80211_CHAN_W_IBSS;
+			}
+
+			break;
+		}
+	}
+}
+
+
+static int ieee80211_unmask_channels(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	int c;
+
+	list_for_each_entry(mode, &local->modes_list, list) {
+		for (c = 0; c < mode->num_channels; c++) {
+			ieee80211_unmask_channel(dev, mode->mode,
+						 &mode->channels[c]);
+		}
+	}
+	return 0;
+}
+
+
+int ieee80211_init_client(struct net_device *dev)
+{
+	if (ieee80211_regdom == 0x40)
+		channel_range = ieee80211_mkk_channels;
+	ieee80211_unmask_channels(dev);
+	return 0;
+}
+
+
+static int ieee80211_ioctl_siwmode(struct net_device *dev,
+				   struct iw_request_info *info,
+				   __u32 *mode, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	int type;
+
+	if (sdata->type == IEEE80211_IF_TYPE_VLAN)
+		return -EOPNOTSUPP;
+
+	switch (*mode) {
+	case IW_MODE_INFRA:
+		type = IEEE80211_IF_TYPE_STA;
+		break;
+	case IW_MODE_ADHOC:
+		type = IEEE80211_IF_TYPE_IBSS;
+		break;
+	case IW_MODE_MONITOR:
+		type = IEEE80211_IF_TYPE_MNTR;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (type == sdata->type)
+		return 0;
+	if (netif_running(dev))
+		return -EBUSY;
+
+	ieee80211_if_reinit(dev);
+	ieee80211_if_set_type(dev, type);
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_giwmode(struct net_device *dev,
+				   struct iw_request_info *info,
+				   __u32 *mode, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	switch (sdata->type) {
+	case IEEE80211_IF_TYPE_AP:
+		*mode = IW_MODE_MASTER;
+		break;
+	case IEEE80211_IF_TYPE_STA:
+		*mode = IW_MODE_INFRA;
+		break;
+	case IEEE80211_IF_TYPE_IBSS:
+		*mode = IW_MODE_ADHOC;
+		break;
+	case IEEE80211_IF_TYPE_MNTR:
+		*mode = IW_MODE_MONITOR;
+		break;
+	case IEEE80211_IF_TYPE_WDS:
+		*mode = IW_MODE_REPEAT;
+		break;
+	case IEEE80211_IF_TYPE_VLAN:
+		*mode = IW_MODE_SECOND;		/* FIXME */
+		break;
+	default:
+		*mode = IW_MODE_AUTO;
+		break;
+	}
+	return 0;
+}
+
+int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
+{
+	struct ieee80211_hw_mode *mode;
+	int c, set = 0;
+	int ret = -EINVAL;
+
+	list_for_each_entry(mode, &local->modes_list, list) {
+		if (!(local->enabled_modes & (1 << mode->mode)))
+			continue;
+		for (c = 0; c < mode->num_channels; c++) {
+			struct ieee80211_channel *chan = &mode->channels[c];
+			if (chan->flag & IEEE80211_CHAN_W_SCAN &&
+			    ((chan->chan == channel) || (chan->freq == freq))) {
+				/* Use next_mode as the mode preference to
+				 * resolve non-unique channel numbers. */
+				if (set && mode->mode != local->next_mode)
+					continue;
+
+				local->oper_channel = chan;
+				local->oper_hw_mode = mode;
+				set++;
+			}
+		}
+	}
+
+	if (set) {
+		if (local->sta_scanning)
+			ret = 0;
+		else
+			ret = ieee80211_hw_config(local);
+
+		rate_control_clear(local);
+	}
+
+	return ret;
+}
+
+static int ieee80211_ioctl_siwfreq(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_freq *freq, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (sdata->type == IEEE80211_IF_TYPE_STA)
+		sdata->u.sta.auto_channel_sel = 0;
+
+	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
+	if (freq->e == 0) {
+		if (freq->m < 0) {
+			if (sdata->type == IEEE80211_IF_TYPE_STA)
+				sdata->u.sta.auto_channel_sel = 1;
+			return 0;
+		} else
+			return ieee80211_set_channel(local, freq->m, -1);
+	} else {
+		int i, div = 1000000;
+		for (i = 0; i < freq->e; i++)
+			div /= 10;
+		if (div > 0)
+			return ieee80211_set_channel(local, -1, freq->m / div);
+		else
+			return -EINVAL;
+	}
+}
+
+
+static int ieee80211_ioctl_giwfreq(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_freq *freq, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	/* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
+	 * driver for the current channel with firmware-based management */
+
+	freq->m = local->hw.conf.freq;
+	freq->e = 6;
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_siwessid(struct net_device *dev,
+				    struct iw_request_info *info,
+				    struct iw_point *data, char *ssid)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	size_t len = data->length;
+
+	/* iwconfig uses nul termination in SSID.. */
+	if (len > 0 && ssid[len - 1] == '\0')
+		len--;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		int ret;
+		if (local->user_space_mlme) {
+			if (len > IEEE80211_MAX_SSID_LEN)
+				return -EINVAL;
+			memcpy(sdata->u.sta.ssid, ssid, len);
+			sdata->u.sta.ssid_len = len;
+			return 0;
+		}
+		sdata->u.sta.auto_ssid_sel = !data->flags;
+		ret = ieee80211_sta_set_ssid(dev, ssid, len);
+		if (ret)
+			return ret;
+		ieee80211_sta_req_auth(dev, &sdata->u.sta);
+		return 0;
+	}
+
+	if (sdata->type == IEEE80211_IF_TYPE_AP) {
+		memcpy(sdata->u.ap.ssid, ssid, len);
+		memset(sdata->u.ap.ssid + len, 0,
+		       IEEE80211_MAX_SSID_LEN - len);
+		sdata->u.ap.ssid_len = len;
+		return ieee80211_if_config(dev);
+	}
+	return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwessid(struct net_device *dev,
+				    struct iw_request_info *info,
+				    struct iw_point *data, char *ssid)
+{
+	size_t len;
+
+	struct ieee80211_sub_if_data *sdata;
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		int res = ieee80211_sta_get_ssid(dev, ssid, &len);
+		if (res == 0) {
+			data->length = len;
+			data->flags = 1;
+		} else
+			data->flags = 0;
+		return res;
+	}
+
+	if (sdata->type == IEEE80211_IF_TYPE_AP) {
+		len = sdata->u.ap.ssid_len;
+		if (len > IW_ESSID_MAX_SIZE)
+			len = IW_ESSID_MAX_SIZE;
+		memcpy(ssid, sdata->u.ap.ssid, len);
+		data->length = len;
+		data->flags = 1;
+		return 0;
+	}
+	return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwap(struct net_device *dev,
+				 struct iw_request_info *info,
+				 struct sockaddr *ap_addr, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		int ret;
+		if (local->user_space_mlme) {
+			memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
+			       ETH_ALEN);
+			return 0;
+		}
+		if (is_zero_ether_addr((u8 *) &ap_addr->sa_data)) {
+			sdata->u.sta.auto_bssid_sel = 1;
+			sdata->u.sta.auto_channel_sel = 1;
+		} else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
+			sdata->u.sta.auto_bssid_sel = 1;
+		else
+			sdata->u.sta.auto_bssid_sel = 0;
+		ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
+		if (ret)
+			return ret;
+		ieee80211_sta_req_auth(dev, &sdata->u.sta);
+		return 0;
+	} else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
+		if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
+			   ETH_ALEN) == 0)
+			return 0;
+		return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
+	}
+
+	return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwap(struct net_device *dev,
+				 struct iw_request_info *info,
+				 struct sockaddr *ap_addr, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		ap_addr->sa_family = ARPHRD_ETHER;
+		memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
+		return 0;
+	} else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
+		ap_addr->sa_family = ARPHRD_ETHER;
+		memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
+		return 0;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwscan(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_point *data, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	u8 *ssid = NULL;
+	size_t ssid_len = 0;
+
+	if (!netif_running(dev))
+		return -ENETDOWN;
+
+	if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
+		if (sdata->type == IEEE80211_IF_TYPE_STA ||
+		    sdata->type == IEEE80211_IF_TYPE_IBSS) {
+			ssid = sdata->u.sta.ssid;
+			ssid_len = sdata->u.sta.ssid_len;
+		} else if (sdata->type == IEEE80211_IF_TYPE_AP) {
+			ssid = sdata->u.ap.ssid;
+			ssid_len = sdata->u.ap.ssid_len;
+		} else
+			return -EINVAL;
+	}
+	return ieee80211_sta_req_scan(dev, ssid, ssid_len);
+}
+
+
+static int ieee80211_ioctl_giwscan(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_point *data, char *extra)
+{
+	int res;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	if (local->sta_scanning)
+		return -EAGAIN;
+	res = ieee80211_sta_scan_results(dev, extra, data->length);
+	if (res >= 0) {
+		data->length = res;
+		return 0;
+	}
+	data->length = 0;
+	return res;
+}
+
+
+static int ieee80211_ioctl_siwrts(struct net_device *dev,
+				  struct iw_request_info *info,
+				  struct iw_param *rts, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (rts->disabled)
+		local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+	else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
+		return -EINVAL;
+	else
+		local->rts_threshold = rts->value;
+
+	/* If the wlan card performs RTS/CTS in hardware/firmware,
+	 * configure it here */
+
+	if (local->ops->set_rts_threshold)
+		local->ops->set_rts_threshold(local_to_hw(local),
+					     local->rts_threshold);
+
+	return 0;
+}
+
+static int ieee80211_ioctl_giwrts(struct net_device *dev,
+				  struct iw_request_info *info,
+				  struct iw_param *rts, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	rts->value = local->rts_threshold;
+	rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
+	rts->fixed = 1;
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_siwfrag(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_param *frag, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (frag->disabled)
+		local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+	else if (frag->value < 256 ||
+		 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
+		return -EINVAL;
+	else {
+		/* Fragment length must be even, so strip LSB. */
+		local->fragmentation_threshold = frag->value & ~0x1;
+	}
+
+	/* If the wlan card performs fragmentation in hardware/firmware,
+	 * configure it here */
+
+	if (local->ops->set_frag_threshold)
+		local->ops->set_frag_threshold(
+			local_to_hw(local),
+			local->fragmentation_threshold);
+
+	return 0;
+}
+
+static int ieee80211_ioctl_giwfrag(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_param *frag, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	frag->value = local->fragmentation_threshold;
+	frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
+	frag->fixed = 1;
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_siwretry(struct net_device *dev,
+				    struct iw_request_info *info,
+				    struct iw_param *retry, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (retry->disabled ||
+	    (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
+		return -EINVAL;
+
+	if (retry->flags & IW_RETRY_MAX)
+		local->long_retry_limit = retry->value;
+	else if (retry->flags & IW_RETRY_MIN)
+		local->short_retry_limit = retry->value;
+	else {
+		local->long_retry_limit = retry->value;
+		local->short_retry_limit = retry->value;
+	}
+
+	if (local->ops->set_retry_limit) {
+		return local->ops->set_retry_limit(
+			local_to_hw(local),
+			local->short_retry_limit,
+			local->long_retry_limit);
+	}
+
+	return 0;
+}
+
+
+static int ieee80211_ioctl_giwretry(struct net_device *dev,
+				    struct iw_request_info *info,
+				    struct iw_param *retry, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	retry->disabled = 0;
+	if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
+		/* first return min value, iwconfig will ask max value
+		 * later if needed */
+		retry->flags |= IW_RETRY_LIMIT;
+		retry->value = local->short_retry_limit;
+		if (local->long_retry_limit != local->short_retry_limit)
+			retry->flags |= IW_RETRY_MIN;
+		return 0;
+	}
+	if (retry->flags & IW_RETRY_MAX) {
+		retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+		retry->value = local->long_retry_limit;
+	}
+
+	return 0;
+}
+
+static int ieee80211_ioctl_clear_keys(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_key_conf key;
+	int i;
+	u8 addr[ETH_ALEN];
+	struct ieee80211_key_conf *keyconf;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+
+	memset(addr, 0xff, ETH_ALEN);
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+			keyconf = NULL;
+			if (sdata->keys[i] &&
+			    !sdata->keys[i]->force_sw_encrypt &&
+			    local->ops->set_key &&
+			    (keyconf = ieee80211_key_data2conf(local,
+							       sdata->keys[i])))
+				local->ops->set_key(local_to_hw(local),
+						   DISABLE_KEY, addr,
+						   keyconf, 0);
+			kfree(keyconf);
+			ieee80211_key_free(sdata->keys[i]);
+			sdata->keys[i] = NULL;
+		}
+		sdata->default_key = NULL;
+	}
+	read_unlock(&local->sub_if_lock);
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		keyconf = NULL;
+		if (sta->key && !sta->key->force_sw_encrypt &&
+		    local->ops->set_key &&
+		    (keyconf = ieee80211_key_data2conf(local, sta->key)))
+			local->ops->set_key(local_to_hw(local), DISABLE_KEY,
+					   sta->addr, keyconf, sta->aid);
+		kfree(keyconf);
+		ieee80211_key_free(sta->key);
+		sta->key = NULL;
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	memset(&key, 0, sizeof(key));
+	if (local->ops->set_key &&
+		    local->ops->set_key(local_to_hw(local), REMOVE_ALL_KEYS,
+				       NULL, &key, 0))
+		printk(KERN_DEBUG "%s: failed to remove hwaccel keys\n",
+		       dev->name);
+
+	return 0;
+}
+
+
+static int
+ieee80211_ioctl_force_unicast_rate(struct net_device *dev,
+				   struct ieee80211_sub_if_data *sdata,
+				   int rate)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	int i;
+
+	if (sdata->type != IEEE80211_IF_TYPE_AP)
+		return -ENOENT;
+
+	if (rate == 0) {
+		sdata->u.ap.force_unicast_rateidx = -1;
+		return 0;
+	}
+
+	mode = local->oper_hw_mode;
+	for (i = 0; i < mode->num_rates; i++) {
+		if (mode->rates[i].rate == rate) {
+			sdata->u.ap.force_unicast_rateidx = i;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+
+static int
+ieee80211_ioctl_max_ratectrl_rate(struct net_device *dev,
+				  struct ieee80211_sub_if_data *sdata,
+				  int rate)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	int i;
+
+	if (sdata->type != IEEE80211_IF_TYPE_AP)
+		return -ENOENT;
+
+	if (rate == 0) {
+		sdata->u.ap.max_ratectrl_rateidx = -1;
+		return 0;
+	}
+
+	mode = local->oper_hw_mode;
+	for (i = 0; i < mode->num_rates; i++) {
+		if (mode->rates[i].rate == rate) {
+			sdata->u.ap.max_ratectrl_rateidx = i;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+
+static void ieee80211_key_enable_hwaccel(struct ieee80211_local *local,
+					 struct ieee80211_key *key)
+{
+	struct ieee80211_key_conf *keyconf;
+	u8 addr[ETH_ALEN];
+
+	if (!key || key->alg != ALG_WEP || !key->force_sw_encrypt ||
+	    (local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP))
+		return;
+
+	memset(addr, 0xff, ETH_ALEN);
+	keyconf = ieee80211_key_data2conf(local, key);
+	if (keyconf && local->ops->set_key &&
+	    local->ops->set_key(local_to_hw(local),
+			       SET_KEY, addr, keyconf, 0) == 0) {
+		key->force_sw_encrypt =
+			!!(keyconf->flags & IEEE80211_KEY_FORCE_SW_ENCRYPT);
+		key->hw_key_idx = keyconf->hw_key_idx;
+	}
+	kfree(keyconf);
+}
+
+
+static void ieee80211_key_disable_hwaccel(struct ieee80211_local *local,
+					  struct ieee80211_key *key)
+{
+	struct ieee80211_key_conf *keyconf;
+	u8 addr[ETH_ALEN];
+
+	if (!key || key->alg != ALG_WEP || key->force_sw_encrypt ||
+	    (local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP))
+		return;
+
+	memset(addr, 0xff, ETH_ALEN);
+	keyconf = ieee80211_key_data2conf(local, key);
+	if (keyconf && local->ops->set_key)
+		local->ops->set_key(local_to_hw(local), DISABLE_KEY,
+				   addr, keyconf, 0);
+	kfree(keyconf);
+	key->force_sw_encrypt = 1;
+}
+
+
+static int ieee80211_ioctl_default_wep_only(struct ieee80211_local *local,
+					    int value)
+{
+	int i;
+	struct ieee80211_sub_if_data *sdata;
+
+	local->default_wep_only = value;
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list)
+		for (i = 0; i < NUM_DEFAULT_KEYS; i++)
+			if (value)
+				ieee80211_key_enable_hwaccel(local,
+							     sdata->keys[i]);
+			else
+				ieee80211_key_disable_hwaccel(local,
+							      sdata->keys[i]);
+	read_unlock(&local->sub_if_lock);
+
+	return 0;
+}
+
+
+void ieee80211_update_default_wep_only(struct ieee80211_local *local)
+{
+	int i = 0;
+	struct ieee80211_sub_if_data *sdata;
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+
+		if (sdata->dev == local->mdev)
+			continue;
+
+		/* If there is an AP interface then depend on userspace to
+		   set default_wep_only correctly. */
+		if (sdata->type == IEEE80211_IF_TYPE_AP) {
+			read_unlock(&local->sub_if_lock);
+			return;
+		}
+
+		i++;
+	}
+
+	read_unlock(&local->sub_if_lock);
+
+	if (i <= 1)
+		ieee80211_ioctl_default_wep_only(local, 1);
+	else
+		ieee80211_ioctl_default_wep_only(local, 0);
+}
+
+
+static int ieee80211_ioctl_prism2_param(struct net_device *dev,
+					struct iw_request_info *info,
+					void *wrqu, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	int *i = (int *) extra;
+	int param = *i;
+	int value = *(i + 1);
+	int ret = 0;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	switch (param) {
+	case PRISM2_PARAM_IEEE_802_1X:
+		if (local->ops->set_ieee8021x)
+			ret = local->ops->set_ieee8021x(local_to_hw(local),
+							value);
+		if (ret)
+			printk(KERN_DEBUG "%s: failed to set IEEE 802.1X (%d) "
+			       "for low-level driver\n", dev->name, value);
+		else
+			sdata->ieee802_1x = value;
+		break;
+
+	case PRISM2_PARAM_ANTSEL_TX:
+		local->hw.conf.antenna_sel_tx = value;
+		if (ieee80211_hw_config(local))
+			ret = -EINVAL;
+		break;
+
+	case PRISM2_PARAM_ANTSEL_RX:
+		local->hw.conf.antenna_sel_rx = value;
+		if (ieee80211_hw_config(local))
+			ret = -EINVAL;
+		break;
+
+	case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
+		local->cts_protect_erp_frames = value;
+		break;
+
+	case PRISM2_PARAM_DROP_UNENCRYPTED:
+		sdata->drop_unencrypted = value;
+		break;
+
+	case PRISM2_PARAM_PREAMBLE:
+		local->short_preamble = value;
+		break;
+
+	case PRISM2_PARAM_STAT_TIME:
+		if (!local->stat_time && value) {
+			local->stat_timer.expires = jiffies + HZ * value / 100;
+			add_timer(&local->stat_timer);
+		} else if (local->stat_time && !value) {
+			del_timer_sync(&local->stat_timer);
+		}
+		local->stat_time = value;
+		break;
+	case PRISM2_PARAM_SHORT_SLOT_TIME:
+		if (value)
+			local->hw.conf.flags |= IEEE80211_CONF_SHORT_SLOT_TIME;
+		else
+			local->hw.conf.flags &= ~IEEE80211_CONF_SHORT_SLOT_TIME;
+		if (ieee80211_hw_config(local))
+			ret = -EINVAL;
+		break;
+
+	case PRISM2_PARAM_NEXT_MODE:
+		local->next_mode = value;
+		break;
+
+	case PRISM2_PARAM_CLEAR_KEYS:
+		ret = ieee80211_ioctl_clear_keys(dev);
+		break;
+
+	case PRISM2_PARAM_RADIO_ENABLED:
+		ret = ieee80211_ioctl_set_radio_enabled(dev, value);
+		break;
+
+	case PRISM2_PARAM_ANTENNA_MODE:
+		local->hw.conf.antenna_mode = value;
+		if (ieee80211_hw_config(local))
+			ret = -EINVAL;
+		break;
+
+	case PRISM2_PARAM_STA_ANTENNA_SEL:
+		local->sta_antenna_sel = value;
+		break;
+
+	case PRISM2_PARAM_FORCE_UNICAST_RATE:
+		ret = ieee80211_ioctl_force_unicast_rate(dev, sdata, value);
+		break;
+
+	case PRISM2_PARAM_MAX_RATECTRL_RATE:
+		ret = ieee80211_ioctl_max_ratectrl_rate(dev, sdata, value);
+		break;
+
+	case PRISM2_PARAM_RATE_CTRL_NUM_UP:
+		local->rate_ctrl_num_up = value;
+		break;
+
+	case PRISM2_PARAM_RATE_CTRL_NUM_DOWN:
+		local->rate_ctrl_num_down = value;
+		break;
+
+	case PRISM2_PARAM_TX_POWER_REDUCTION:
+		if (value < 0)
+			ret = -EINVAL;
+		else
+			local->hw.conf.tx_power_reduction = value;
+		break;
+
+	case PRISM2_PARAM_KEY_TX_RX_THRESHOLD:
+		local->key_tx_rx_threshold = value;
+		break;
+
+	case PRISM2_PARAM_DEFAULT_WEP_ONLY:
+		ret = ieee80211_ioctl_default_wep_only(local, value);
+		break;
+
+	case PRISM2_PARAM_WIFI_WME_NOACK_TEST:
+		local->wifi_wme_noack_test = value;
+		break;
+
+	case PRISM2_PARAM_SCAN_FLAGS:
+		local->scan_flags = value;
+		break;
+
+	case PRISM2_PARAM_MIXED_CELL:
+		if (sdata->type != IEEE80211_IF_TYPE_STA &&
+		    sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			sdata->u.sta.mixed_cell = !!value;
+		break;
+
+	case PRISM2_PARAM_HW_MODES:
+		local->enabled_modes = value;
+		break;
+
+	case PRISM2_PARAM_CREATE_IBSS:
+		if (sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			sdata->u.sta.create_ibss = !!value;
+		break;
+	case PRISM2_PARAM_WMM_ENABLED:
+		if (sdata->type != IEEE80211_IF_TYPE_STA &&
+		    sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			sdata->u.sta.wmm_enabled = !!value;
+		break;
+	case PRISM2_PARAM_RADAR_DETECT:
+		local->hw.conf.radar_detect = value;
+		break;
+	case PRISM2_PARAM_SPECTRUM_MGMT:
+		local->hw.conf.spect_mgmt = value;
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+
+	return ret;
+}
+
+
+static int ieee80211_ioctl_get_prism2_param(struct net_device *dev,
+					    struct iw_request_info *info,
+					    void *wrqu, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	int *param = (int *) extra;
+	int ret = 0;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	switch (*param) {
+	case PRISM2_PARAM_IEEE_802_1X:
+		*param = sdata->ieee802_1x;
+		break;
+
+	case PRISM2_PARAM_ANTSEL_TX:
+		*param = local->hw.conf.antenna_sel_tx;
+		break;
+
+	case PRISM2_PARAM_ANTSEL_RX:
+		*param = local->hw.conf.antenna_sel_rx;
+		break;
+
+	case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
+		*param = local->cts_protect_erp_frames;
+		break;
+
+	case PRISM2_PARAM_DROP_UNENCRYPTED:
+		*param = sdata->drop_unencrypted;
+		break;
+
+	case PRISM2_PARAM_PREAMBLE:
+		*param = local->short_preamble;
+		break;
+
+	case PRISM2_PARAM_STAT_TIME:
+		*param = local->stat_time;
+		break;
+	case PRISM2_PARAM_SHORT_SLOT_TIME:
+		*param = !!(local->hw.conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME);
+		break;
+
+	case PRISM2_PARAM_NEXT_MODE:
+		*param = local->next_mode;
+		break;
+
+	case PRISM2_PARAM_ANTENNA_MODE:
+		*param = local->hw.conf.antenna_mode;
+		break;
+
+	case PRISM2_PARAM_STA_ANTENNA_SEL:
+		*param = local->sta_antenna_sel;
+		break;
+
+	case PRISM2_PARAM_RATE_CTRL_NUM_UP:
+		*param = local->rate_ctrl_num_up;
+		break;
+
+	case PRISM2_PARAM_RATE_CTRL_NUM_DOWN:
+		*param = local->rate_ctrl_num_down;
+		break;
+
+	case PRISM2_PARAM_TX_POWER_REDUCTION:
+		*param = local->hw.conf.tx_power_reduction;
+		break;
+
+	case PRISM2_PARAM_KEY_TX_RX_THRESHOLD:
+		*param = local->key_tx_rx_threshold;
+		break;
+
+	case PRISM2_PARAM_DEFAULT_WEP_ONLY:
+		*param = local->default_wep_only;
+		break;
+
+	case PRISM2_PARAM_WIFI_WME_NOACK_TEST:
+		*param = local->wifi_wme_noack_test;
+		break;
+
+	case PRISM2_PARAM_SCAN_FLAGS:
+		*param = local->scan_flags;
+		break;
+
+	case PRISM2_PARAM_HW_MODES:
+		*param = local->enabled_modes;
+		break;
+
+	case PRISM2_PARAM_CREATE_IBSS:
+		if (sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			*param = !!sdata->u.sta.create_ibss;
+		break;
+
+	case PRISM2_PARAM_MIXED_CELL:
+		if (sdata->type != IEEE80211_IF_TYPE_STA &&
+		    sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			*param = !!sdata->u.sta.mixed_cell;
+		break;
+	case PRISM2_PARAM_WMM_ENABLED:
+		if (sdata->type != IEEE80211_IF_TYPE_STA &&
+		    sdata->type != IEEE80211_IF_TYPE_IBSS)
+			ret = -EINVAL;
+		else
+			*param = !!sdata->u.sta.wmm_enabled;
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+
+	return ret;
+}
+
+static int ieee80211_ioctl_siwmlme(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_point *data, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct iw_mlme *mlme = (struct iw_mlme *) extra;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type != IEEE80211_IF_TYPE_STA &&
+	    sdata->type != IEEE80211_IF_TYPE_IBSS)
+		return -EINVAL;
+
+	switch (mlme->cmd) {
+	case IW_MLME_DEAUTH:
+		/* TODO: mlme->addr.sa_data */
+		return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
+	case IW_MLME_DISASSOC:
+		/* TODO: mlme->addr.sa_data */
+		return ieee80211_sta_disassociate(dev, mlme->reason_code);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+
+static int ieee80211_ioctl_siwencode(struct net_device *dev,
+				     struct iw_request_info *info,
+				     struct iw_point *erq, char *keybuf)
+{
+	struct ieee80211_sub_if_data *sdata;
+	int idx, i, alg = ALG_WEP;
+	u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	idx = erq->flags & IW_ENCODE_INDEX;
+	if (idx == 0) {
+		if (sdata->default_key)
+			for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+				if (sdata->default_key == sdata->keys[i]) {
+					idx = i;
+					break;
+				}
+			}
+	} else if (idx < 1 || idx > 4)
+		return -EINVAL;
+	else
+		idx--;
+
+	if (erq->flags & IW_ENCODE_DISABLED)
+		alg = ALG_NONE;
+	else if (erq->length == 0) {
+		/* No key data - just set the default TX key index */
+		if (sdata->default_key != sdata->keys[idx])
+			sdata->default_key = sdata->keys[idx];
+		return 0;
+	}
+
+	return ieee80211_set_encryption(
+		dev, bcaddr,
+		idx, alg,
+		!sdata->default_key,
+		keybuf, erq->length);
+}
+
+
+static int ieee80211_ioctl_giwencode(struct net_device *dev,
+				     struct iw_request_info *info,
+				     struct iw_point *erq, char *key)
+{
+	struct ieee80211_sub_if_data *sdata;
+	int idx, i;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	idx = erq->flags & IW_ENCODE_INDEX;
+	if (idx < 1 || idx > 4) {
+		idx = -1;
+		if (!sdata->default_key)
+			idx = 0;
+		else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+			if (sdata->default_key == sdata->keys[i]) {
+				idx = i;
+				break;
+			}
+		}
+		if (idx < 0)
+			return -EINVAL;
+	} else
+		idx--;
+
+	erq->flags = idx + 1;
+
+	if (!sdata->keys[idx]) {
+		erq->length = 0;
+		erq->flags |= IW_ENCODE_DISABLED;
+		return 0;
+	}
+
+	memcpy(key, sdata->keys[idx]->key,
+	       min((int)erq->length, sdata->keys[idx]->keylen));
+	erq->length = sdata->keys[idx]->keylen;
+	erq->flags |= IW_ENCODE_ENABLED;
+
+	return 0;
+}
+
+static int ieee80211_ioctl_siwauth(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_param *data, char *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	int ret = 0;
+
+	switch (data->flags & IW_AUTH_INDEX) {
+	case IW_AUTH_WPA_VERSION:
+	case IW_AUTH_CIPHER_PAIRWISE:
+	case IW_AUTH_CIPHER_GROUP:
+	case IW_AUTH_WPA_ENABLED:
+	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
+		break;
+	case IW_AUTH_KEY_MGMT:
+		if (sdata->type != IEEE80211_IF_TYPE_STA)
+			ret = -EINVAL;
+		else {
+			/*
+			 * TODO: sdata->u.sta.key_mgmt does not match with WE18
+			 * value completely; could consider modifying this to
+			 * be closer to WE18. For now, this value is not really
+			 * used for anything else than Privacy matching, so the
+			 * current code here should be more or less OK.
+			 */
+			if (data->value & IW_AUTH_KEY_MGMT_802_1X) {
+				sdata->u.sta.key_mgmt =
+					IEEE80211_KEY_MGMT_WPA_EAP;
+			} else if (data->value & IW_AUTH_KEY_MGMT_PSK) {
+				sdata->u.sta.key_mgmt =
+					IEEE80211_KEY_MGMT_WPA_PSK;
+			} else {
+				sdata->u.sta.key_mgmt =
+					IEEE80211_KEY_MGMT_NONE;
+			}
+		}
+		break;
+	case IW_AUTH_80211_AUTH_ALG:
+		if (sdata->type == IEEE80211_IF_TYPE_STA ||
+		    sdata->type == IEEE80211_IF_TYPE_IBSS)
+			sdata->u.sta.auth_algs = data->value;
+		else
+			ret = -EOPNOTSUPP;
+		break;
+	case IW_AUTH_PRIVACY_INVOKED:
+		if (local->ops->set_privacy_invoked)
+			ret = local->ops->set_privacy_invoked(
+					local_to_hw(local), data->value);
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+	return ret;
+}
+
+/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
+static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct iw_statistics *wstats = &local->wstats;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct sta_info *sta = NULL;
+
+	if (sdata->type == IEEE80211_IF_TYPE_STA ||
+	    sdata->type == IEEE80211_IF_TYPE_IBSS)
+		sta = sta_info_get(local, sdata->u.sta.bssid);
+	if (!sta) {
+		wstats->discard.fragment = 0;
+		wstats->discard.misc = 0;
+		wstats->qual.qual = 0;
+		wstats->qual.level = 0;
+		wstats->qual.noise = 0;
+		wstats->qual.updated = IW_QUAL_ALL_INVALID;
+	} else {
+		wstats->qual.level = sta->last_rssi;
+		wstats->qual.qual = sta->last_signal;
+		wstats->qual.noise = sta->last_noise;
+		wstats->qual.updated = local->wstats_flags;
+		sta_info_put(sta);
+	}
+	return wstats;
+}
+
+static int ieee80211_ioctl_giwauth(struct net_device *dev,
+				   struct iw_request_info *info,
+				   struct iw_param *data, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	int ret = 0;
+
+	switch (data->flags & IW_AUTH_INDEX) {
+	case IW_AUTH_80211_AUTH_ALG:
+		if (sdata->type == IEEE80211_IF_TYPE_STA ||
+		    sdata->type == IEEE80211_IF_TYPE_IBSS)
+			data->value = sdata->u.sta.auth_algs;
+		else
+			ret = -EOPNOTSUPP;
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+	return ret;
+}
+
+
+static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
+					struct iw_request_info *info,
+					struct iw_point *erq, char *extra)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
+	int alg, idx, i;
+
+	switch (ext->alg) {
+	case IW_ENCODE_ALG_NONE:
+		alg = ALG_NONE;
+		break;
+	case IW_ENCODE_ALG_WEP:
+		alg = ALG_WEP;
+		break;
+	case IW_ENCODE_ALG_TKIP:
+		alg = ALG_TKIP;
+		break;
+	case IW_ENCODE_ALG_CCMP:
+		alg = ALG_CCMP;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	if (erq->flags & IW_ENCODE_DISABLED)
+		alg = ALG_NONE;
+
+	idx = erq->flags & IW_ENCODE_INDEX;
+	if (idx < 1 || idx > 4) {
+		idx = -1;
+		if (!sdata->default_key)
+			idx = 0;
+		else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+			if (sdata->default_key == sdata->keys[i]) {
+				idx = i;
+				break;
+			}
+		}
+		if (idx < 0)
+			return -EINVAL;
+	} else
+		idx--;
+
+	return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
+					ext->ext_flags &
+					IW_ENCODE_EXT_SET_TX_KEY,
+					ext->key, ext->key_len);
+}
+
+
+static const struct iw_priv_args ieee80211_ioctl_priv[] = {
+	{ PRISM2_IOCTL_PRISM2_PARAM,
+	  IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "param" },
+	{ PRISM2_IOCTL_GET_PRISM2_PARAM,
+	  IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+	  IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_param" },
+};
+
+/* Structures to export the Wireless Handlers */
+
+static const iw_handler ieee80211_handler[] =
+{
+	(iw_handler) NULL,				/* SIOCSIWCOMMIT */
+	(iw_handler) ieee80211_ioctl_giwname,		/* SIOCGIWNAME */
+	(iw_handler) NULL,				/* SIOCSIWNWID */
+	(iw_handler) NULL,				/* SIOCGIWNWID */
+	(iw_handler) ieee80211_ioctl_siwfreq,		/* SIOCSIWFREQ */
+	(iw_handler) ieee80211_ioctl_giwfreq,		/* SIOCGIWFREQ */
+	(iw_handler) ieee80211_ioctl_siwmode,		/* SIOCSIWMODE */
+	(iw_handler) ieee80211_ioctl_giwmode,		/* SIOCGIWMODE */
+	(iw_handler) NULL,				/* SIOCSIWSENS */
+	(iw_handler) NULL,				/* SIOCGIWSENS */
+	(iw_handler) NULL /* not used */,		/* SIOCSIWRANGE */
+	(iw_handler) ieee80211_ioctl_giwrange,		/* SIOCGIWRANGE */
+	(iw_handler) NULL /* not used */,		/* SIOCSIWPRIV */
+	(iw_handler) NULL /* kernel code */,		/* SIOCGIWPRIV */
+	(iw_handler) NULL /* not used */,		/* SIOCSIWSTATS */
+	(iw_handler) NULL /* kernel code */,		/* SIOCGIWSTATS */
+	iw_handler_set_spy,				/* SIOCSIWSPY */
+	iw_handler_get_spy,				/* SIOCGIWSPY */
+	iw_handler_set_thrspy,				/* SIOCSIWTHRSPY */
+	iw_handler_get_thrspy,				/* SIOCGIWTHRSPY */
+	(iw_handler) ieee80211_ioctl_siwap,		/* SIOCSIWAP */
+	(iw_handler) ieee80211_ioctl_giwap,		/* SIOCGIWAP */
+	(iw_handler) ieee80211_ioctl_siwmlme,		/* SIOCSIWMLME */
+	(iw_handler) NULL,				/* SIOCGIWAPLIST */
+	(iw_handler) ieee80211_ioctl_siwscan,		/* SIOCSIWSCAN */
+	(iw_handler) ieee80211_ioctl_giwscan,		/* SIOCGIWSCAN */
+	(iw_handler) ieee80211_ioctl_siwessid,		/* SIOCSIWESSID */
+	(iw_handler) ieee80211_ioctl_giwessid,		/* SIOCGIWESSID */
+	(iw_handler) NULL,				/* SIOCSIWNICKN */
+	(iw_handler) NULL,				/* SIOCGIWNICKN */
+	(iw_handler) NULL,				/* -- hole -- */
+	(iw_handler) NULL,				/* -- hole -- */
+	(iw_handler) NULL,				/* SIOCSIWRATE */
+	(iw_handler) NULL,				/* SIOCGIWRATE */
+	(iw_handler) ieee80211_ioctl_siwrts,		/* SIOCSIWRTS */
+	(iw_handler) ieee80211_ioctl_giwrts,		/* SIOCGIWRTS */
+	(iw_handler) ieee80211_ioctl_siwfrag,		/* SIOCSIWFRAG */
+	(iw_handler) ieee80211_ioctl_giwfrag,		/* SIOCGIWFRAG */
+	(iw_handler) NULL,				/* SIOCSIWTXPOW */
+	(iw_handler) NULL,				/* SIOCGIWTXPOW */
+	(iw_handler) ieee80211_ioctl_siwretry,		/* SIOCSIWRETRY */
+	(iw_handler) ieee80211_ioctl_giwretry,		/* SIOCGIWRETRY */
+	(iw_handler) ieee80211_ioctl_siwencode,		/* SIOCSIWENCODE */
+	(iw_handler) ieee80211_ioctl_giwencode,		/* SIOCGIWENCODE */
+	(iw_handler) NULL,				/* SIOCSIWPOWER */
+	(iw_handler) NULL,				/* SIOCGIWPOWER */
+	(iw_handler) NULL,				/* -- hole -- */
+	(iw_handler) NULL,				/* -- hole -- */
+	(iw_handler) ieee80211_ioctl_siwgenie,		/* SIOCSIWGENIE */
+	(iw_handler) NULL,				/* SIOCGIWGENIE */
+	(iw_handler) ieee80211_ioctl_siwauth,		/* SIOCSIWAUTH */
+	(iw_handler) ieee80211_ioctl_giwauth,		/* SIOCGIWAUTH */
+	(iw_handler) ieee80211_ioctl_siwencodeext,	/* SIOCSIWENCODEEXT */
+	(iw_handler) NULL,				/* SIOCGIWENCODEEXT */
+	(iw_handler) NULL,				/* SIOCSIWPMKSA */
+	(iw_handler) NULL,				/* -- hole -- */
+};
+
+static const iw_handler ieee80211_private_handler[] =
+{							/* SIOCIWFIRSTPRIV + */
+	(iw_handler) ieee80211_ioctl_prism2_param,	/* 0 */
+	(iw_handler) ieee80211_ioctl_get_prism2_param,	/* 1 */
+};
+
+const struct iw_handler_def ieee80211_iw_handler_def =
+{
+	.num_standard	= ARRAY_SIZE(ieee80211_handler),
+	.num_private	= ARRAY_SIZE(ieee80211_private_handler),
+	.num_private_args = ARRAY_SIZE(ieee80211_ioctl_priv),
+	.standard	= (iw_handler *) ieee80211_handler,
+	.private	= (iw_handler *) ieee80211_private_handler,
+	.private_args	= (struct iw_priv_args *) ieee80211_ioctl_priv,
+	.get_wireless_stats = ieee80211_get_wireless_stats,
+};
diff --git a/net/mac80211/ieee80211_key.h b/net/mac80211/ieee80211_key.h
new file mode 100644
index 0000000..da67d87
--- /dev/null
+++ b/net/mac80211/ieee80211_key.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_KEY_H
+#define IEEE80211_KEY_H
+
+#include <linux/types.h>
+#include <linux/kref.h>
+#include <linux/crypto.h>
+#include <net/mac80211.h>
+
+/* ALG_TKIP
+ * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
+ * Temporal Encryption Key (128 bits)
+ * Temporal Authenticator Tx MIC Key (64 bits)
+ * Temporal Authenticator Rx MIC Key (64 bits)
+ */
+
+#define WEP_IV_LEN 4
+#define WEP_ICV_LEN 4
+
+#define ALG_TKIP_KEY_LEN 32
+/* Starting offsets for each key */
+#define ALG_TKIP_TEMP_ENCR_KEY 0
+#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
+#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
+#define TKIP_IV_LEN 8
+#define TKIP_ICV_LEN 4
+
+#define ALG_CCMP_KEY_LEN 16
+#define CCMP_HDR_LEN 8
+#define CCMP_MIC_LEN 8
+#define CCMP_TK_LEN 16
+#define CCMP_PN_LEN 6
+
+#define NUM_RX_DATA_QUEUES 17
+
+struct ieee80211_key {
+	struct kref kref;
+
+	int hw_key_idx; /* filled and used by low-level driver */
+	ieee80211_key_alg alg;
+	union {
+		struct {
+			/* last used TSC */
+			u32 iv32;
+			u16 iv16;
+			u16 p1k[5];
+			int tx_initialized;
+
+			/* last received RSC */
+			u32 iv32_rx[NUM_RX_DATA_QUEUES];
+			u16 iv16_rx[NUM_RX_DATA_QUEUES];
+			u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
+			int rx_initialized[NUM_RX_DATA_QUEUES];
+		} tkip;
+		struct {
+			u8 tx_pn[6];
+			u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+			struct crypto_cipher *tfm;
+			u32 replays; /* dot11RSNAStatsCCMPReplays */
+			/* scratch buffers for virt_to_page() (crypto API) */
+#ifndef AES_BLOCK_LEN
+#define AES_BLOCK_LEN 16
+#endif
+			u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
+			u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
+		} ccmp;
+	} u;
+	int tx_rx_count; /* number of times this key has been used */
+	int keylen;
+
+	/* if the low level driver can provide hardware acceleration it should
+	 * clear this flag */
+	unsigned int force_sw_encrypt:1;
+	unsigned int default_tx_key:1; /* This key is the new default TX key
+					* (used only for broadcast keys). */
+	s8 keyidx; /* WEP key index */
+
+	u8 key[0];
+};
+
+#endif /* IEEE80211_KEY_H */
diff --git a/net/mac80211/ieee80211_led.c b/net/mac80211/ieee80211_led.c
new file mode 100644
index 0000000..719d75b
--- /dev/null
+++ b/net/mac80211/ieee80211_led.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* just for IFNAMSIZ */
+#include <linux/if.h>
+#include "ieee80211_led.h"
+
+void ieee80211_led_rx(struct ieee80211_local *local)
+{
+	if (unlikely(!local->rx_led))
+		return;
+	if (local->rx_led_counter++ % 2 == 0)
+		led_trigger_event(local->rx_led, LED_OFF);
+	else
+		led_trigger_event(local->rx_led, LED_FULL);
+}
+
+/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
+void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+	if (unlikely(!local->tx_led))
+		return;
+	/* not sure how this is supposed to work ... */
+	local->tx_led_counter += 2*q-1;
+	if (local->tx_led_counter % 2 == 0)
+		led_trigger_event(local->tx_led, LED_OFF);
+	else
+		led_trigger_event(local->tx_led, LED_FULL);
+}
+
+void ieee80211_led_init(struct ieee80211_local *local)
+{
+	local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+	if (!local->rx_led)
+		return;
+	snprintf(local->rx_led_name, sizeof(local->rx_led_name),
+		 "%srx", wiphy_name(local->hw.wiphy));
+	local->rx_led->name = local->rx_led_name;
+	if (led_trigger_register(local->rx_led)) {
+		kfree(local->rx_led);
+		local->rx_led = NULL;
+	}
+
+	local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+	if (!local->tx_led)
+		return;
+	snprintf(local->tx_led_name, sizeof(local->tx_led_name),
+		 "%stx", wiphy_name(local->hw.wiphy));
+	local->tx_led->name = local->tx_led_name;
+	if (led_trigger_register(local->tx_led)) {
+		kfree(local->tx_led);
+		local->tx_led = NULL;
+	}
+}
+
+void ieee80211_led_exit(struct ieee80211_local *local)
+{
+	if (local->tx_led) {
+		led_trigger_unregister(local->tx_led);
+		kfree(local->tx_led);
+	}
+	if (local->rx_led) {
+		led_trigger_unregister(local->rx_led);
+		kfree(local->rx_led);
+	}
+}
+
+char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	if (local->tx_led)
+		return local->tx_led_name;
+	return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
+
+char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	if (local->rx_led)
+		return local->rx_led_name;
+	return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
diff --git a/net/mac80211/ieee80211_led.h b/net/mac80211/ieee80211_led.h
new file mode 100644
index 0000000..5c8ab82
--- /dev/null
+++ b/net/mac80211/ieee80211_led.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/leds.h>
+#include "ieee80211_i.h"
+
+#ifdef CONFIG_MAC80211_LEDS
+extern void ieee80211_led_rx(struct ieee80211_local *local);
+extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
+extern void ieee80211_led_init(struct ieee80211_local *local);
+extern void ieee80211_led_exit(struct ieee80211_local *local);
+#else
+static inline void ieee80211_led_rx(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+}
+static inline void ieee80211_led_init(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_exit(struct ieee80211_local *local)
+{
+}
+#endif
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
new file mode 100644
index 0000000..16e8508
--- /dev/null
+++ b/net/mac80211/ieee80211_rate.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include "ieee80211_rate.h"
+#include "ieee80211_i.h"
+
+struct rate_control_alg {
+	struct list_head list;
+	struct rate_control_ops *ops;
+};
+
+static LIST_HEAD(rate_ctrl_algs);
+static DEFINE_MUTEX(rate_ctrl_mutex);
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops)
+{
+	struct rate_control_alg *alg;
+
+	alg = kmalloc(sizeof(*alg), GFP_KERNEL);
+	if (alg == NULL) {
+		return -ENOMEM;
+	}
+	memset(alg, 0, sizeof(*alg));
+	alg->ops = ops;
+
+	mutex_lock(&rate_ctrl_mutex);
+	list_add_tail(&alg->list, &rate_ctrl_algs);
+	mutex_unlock(&rate_ctrl_mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_rate_control_register);
+
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
+{
+	struct rate_control_alg *alg;
+
+	mutex_lock(&rate_ctrl_mutex);
+	list_for_each_entry(alg, &rate_ctrl_algs, list) {
+		if (alg->ops == ops) {
+			list_del(&alg->list);
+			break;
+		}
+	}
+	mutex_unlock(&rate_ctrl_mutex);
+	kfree(alg);
+}
+EXPORT_SYMBOL(ieee80211_rate_control_unregister);
+
+static struct rate_control_ops *
+ieee80211_try_rate_control_ops_get(const char *name)
+{
+	struct rate_control_alg *alg;
+	struct rate_control_ops *ops = NULL;
+
+	mutex_lock(&rate_ctrl_mutex);
+	list_for_each_entry(alg, &rate_ctrl_algs, list) {
+		if (!name || !strcmp(alg->ops->name, name))
+			if (try_module_get(alg->ops->module)) {
+				ops = alg->ops;
+				break;
+			}
+	}
+	mutex_unlock(&rate_ctrl_mutex);
+	return ops;
+}
+
+/* Get the rate control algorithm. If `name' is NULL, get the first
+ * available algorithm. */
+static struct rate_control_ops *
+ieee80211_rate_control_ops_get(const char *name)
+{
+	struct rate_control_ops *ops;
+
+	ops = ieee80211_try_rate_control_ops_get(name);
+	if (!ops) {
+		request_module("rc80211_%s", name ? name : "default");
+		ops = ieee80211_try_rate_control_ops_get(name);
+	}
+	return ops;
+}
+
+static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
+{
+	module_put(ops->module);
+}
+
+struct rate_control_ref *rate_control_alloc(const char *name,
+					    struct ieee80211_local *local)
+{
+	struct rate_control_ref *ref;
+
+	ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
+	if (!ref)
+		goto fail_ref;
+	kref_init(&ref->kref);
+	ref->ops = ieee80211_rate_control_ops_get(name);
+	if (!ref->ops)
+		goto fail_ops;
+	ref->priv = ref->ops->alloc(local);
+	if (!ref->priv)
+		goto fail_priv;
+	return ref;
+
+fail_priv:
+	ieee80211_rate_control_ops_put(ref->ops);
+fail_ops:
+	kfree(ref);
+fail_ref:
+	return NULL;
+}
+
+static void rate_control_release(struct kref *kref)
+{
+	struct rate_control_ref *ctrl_ref;
+
+	ctrl_ref = container_of(kref, struct rate_control_ref, kref);
+	ctrl_ref->ops->free(ctrl_ref->priv);
+	ieee80211_rate_control_ops_put(ctrl_ref->ops);
+	kfree(ctrl_ref);
+}
+
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
+{
+	kref_get(&ref->kref);
+	return ref;
+}
+
+void rate_control_put(struct rate_control_ref *ref)
+{
+	kref_put(&ref->kref, rate_control_release);
+}
diff --git a/net/mac80211/ieee80211_rate.h b/net/mac80211/ieee80211_rate.h
new file mode 100644
index 0000000..710f568
--- /dev/null
+++ b/net/mac80211/ieee80211_rate.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_RATE_H
+#define IEEE80211_RATE_H
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+#define RATE_CONTROL_NUM_DOWN 20
+#define RATE_CONTROL_NUM_UP   15
+
+
+struct rate_control_extra {
+	/* values from rate_control_get_rate() to the caller: */
+	struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
+				       * probing */
+	struct ieee80211_rate *nonerp;
+
+	/* parameters from the caller to rate_control_get_rate(): */
+	struct ieee80211_hw_mode *mode;
+	int mgmt_data; /* this is data frame that is used for management
+			* (e.g., IEEE 802.1X EAPOL) */
+	u16 ethertype;
+};
+
+
+struct rate_control_ops {
+	struct module *module;
+	const char *name;
+	void (*tx_status)(void *priv, struct net_device *dev,
+			  struct sk_buff *skb,
+			  struct ieee80211_tx_status *status);
+	struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
+					   struct sk_buff *skb,
+					   struct rate_control_extra *extra);
+	void (*rate_init)(void *priv, void *priv_sta,
+			  struct ieee80211_local *local, struct sta_info *sta);
+	void (*clear)(void *priv);
+
+	void *(*alloc)(struct ieee80211_local *local);
+	void (*free)(void *priv);
+	void *(*alloc_sta)(void *priv, gfp_t gfp);
+	void (*free_sta)(void *priv, void *priv_sta);
+
+	int (*add_attrs)(void *priv, struct kobject *kobj);
+	void (*remove_attrs)(void *priv, struct kobject *kobj);
+};
+
+struct rate_control_ref {
+	struct rate_control_ops *ops;
+	void *priv;
+	struct kref kref;
+};
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops);
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+
+/* Get a reference to the rate control algorithm. If `name' is NULL, get the
+ * first available algorithm. */
+struct rate_control_ref *rate_control_alloc(const char *name,
+					    struct ieee80211_local *local);
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
+void rate_control_put(struct rate_control_ref *ref);
+
+static inline void rate_control_tx_status(struct ieee80211_local *local,
+					  struct net_device *dev,
+					  struct sk_buff *skb,
+					  struct ieee80211_tx_status *status)
+{
+	struct rate_control_ref *ref = local->rate_ctrl;
+	ref->ops->tx_status(ref->priv, dev, skb, status);
+}
+
+
+static inline struct ieee80211_rate *
+rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
+		      struct sk_buff *skb, struct rate_control_extra *extra)
+{
+	struct rate_control_ref *ref = local->rate_ctrl;
+	return ref->ops->get_rate(ref->priv, dev, skb, extra);
+}
+
+
+static inline void rate_control_rate_init(struct sta_info *sta,
+					  struct ieee80211_local *local)
+{
+	struct rate_control_ref *ref = sta->rate_ctrl;
+	ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
+}
+
+
+static inline void rate_control_clear(struct ieee80211_local *local)
+{
+	struct rate_control_ref *ref = local->rate_ctrl;
+	ref->ops->clear(ref->priv);
+}
+
+static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
+					   gfp_t gfp)
+{
+	return ref->ops->alloc_sta(ref->priv, gfp);
+}
+
+static inline void rate_control_free_sta(struct rate_control_ref *ref,
+					 void *priv)
+{
+	ref->ops->free_sta(ref->priv, priv);
+}
+
+#endif /* IEEE80211_RATE_H */
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
new file mode 100644
index 0000000..822917d
--- /dev/null
+++ b/net/mac80211/ieee80211_sta.c
@@ -0,0 +1,3060 @@
+/*
+ * BSS client mode implementation
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* TODO:
+ * BSS table: use <BSSID,SSID> as the key to support multi-SSID APs
+ * order BSS list by RSSI(?) ("quality of AP")
+ * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
+ *    SSID)
+ */
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <asm/types.h>
+#include <asm/delay.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "hostapd_ioctl.h"
+
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
+#define IEEE80211_PROBE_INTERVAL (60 * HZ)
+#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
+#define IEEE80211_SCAN_INTERVAL (2 * HZ)
+#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
+#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
+
+#define IEEE80211_PROBE_DELAY (HZ / 33)
+#define IEEE80211_CHANNEL_TIME (HZ / 33)
+#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
+#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
+#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+
+#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
+
+
+#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
+
+#define ERP_INFO_USE_PROTECTION BIT(1)
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+				     u8 *ssid, size_t ssid_len);
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid);
+static void ieee80211_rx_bss_put(struct net_device *dev,
+				 struct ieee80211_sta_bss *bss);
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta);
+static int ieee80211_sta_wep_configured(struct net_device *dev);
+static int ieee80211_sta_start_scan(struct net_device *dev,
+				    u8 *ssid, size_t ssid_len);
+static int ieee80211_sta_config_auth(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta);
+
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+	u8 *ssid;
+	u8 ssid_len;
+	u8 *supp_rates;
+	u8 supp_rates_len;
+	u8 *fh_params;
+	u8 fh_params_len;
+	u8 *ds_params;
+	u8 ds_params_len;
+	u8 *cf_params;
+	u8 cf_params_len;
+	u8 *tim;
+	u8 tim_len;
+	u8 *ibss_params;
+	u8 ibss_params_len;
+	u8 *challenge;
+	u8 challenge_len;
+	u8 *wpa;
+	u8 wpa_len;
+	u8 *rsn;
+	u8 rsn_len;
+	u8 *erp_info;
+	u8 erp_info_len;
+	u8 *ext_supp_rates;
+	u8 ext_supp_rates_len;
+	u8 *wmm_info;
+	u8 wmm_info_len;
+	u8 *wmm_param;
+	u8 wmm_param_len;
+};
+
+typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
+
+
+static ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
+				       struct ieee802_11_elems *elems)
+{
+	size_t left = len;
+	u8 *pos = start;
+	int unknown = 0;
+
+	memset(elems, 0, sizeof(*elems));
+
+	while (left >= 2) {
+		u8 id, elen;
+
+		id = *pos++;
+		elen = *pos++;
+		left -= 2;
+
+		if (elen > left) {
+#if 0
+			if (net_ratelimit())
+				printk(KERN_DEBUG "IEEE 802.11 element parse "
+				       "failed (id=%d elen=%d left=%d)\n",
+				       id, elen, left);
+#endif
+			return ParseFailed;
+		}
+
+		switch (id) {
+		case WLAN_EID_SSID:
+			elems->ssid = pos;
+			elems->ssid_len = elen;
+			break;
+		case WLAN_EID_SUPP_RATES:
+			elems->supp_rates = pos;
+			elems->supp_rates_len = elen;
+			break;
+		case WLAN_EID_FH_PARAMS:
+			elems->fh_params = pos;
+			elems->fh_params_len = elen;
+			break;
+		case WLAN_EID_DS_PARAMS:
+			elems->ds_params = pos;
+			elems->ds_params_len = elen;
+			break;
+		case WLAN_EID_CF_PARAMS:
+			elems->cf_params = pos;
+			elems->cf_params_len = elen;
+			break;
+		case WLAN_EID_TIM:
+			elems->tim = pos;
+			elems->tim_len = elen;
+			break;
+		case WLAN_EID_IBSS_PARAMS:
+			elems->ibss_params = pos;
+			elems->ibss_params_len = elen;
+			break;
+		case WLAN_EID_CHALLENGE:
+			elems->challenge = pos;
+			elems->challenge_len = elen;
+			break;
+		case WLAN_EID_WPA:
+			if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+			    pos[2] == 0xf2) {
+				/* Microsoft OUI (00:50:F2) */
+				if (pos[3] == 1) {
+					/* OUI Type 1 - WPA IE */
+					elems->wpa = pos;
+					elems->wpa_len = elen;
+				} else if (elen >= 5 && pos[3] == 2) {
+					if (pos[4] == 0) {
+						elems->wmm_info = pos;
+						elems->wmm_info_len = elen;
+					} else if (pos[4] == 1) {
+						elems->wmm_param = pos;
+						elems->wmm_param_len = elen;
+					}
+				}
+			}
+			break;
+		case WLAN_EID_RSN:
+			elems->rsn = pos;
+			elems->rsn_len = elen;
+			break;
+		case WLAN_EID_ERP_INFO:
+			elems->erp_info = pos;
+			elems->erp_info_len = elen;
+			break;
+		case WLAN_EID_EXT_SUPP_RATES:
+			elems->ext_supp_rates = pos;
+			elems->ext_supp_rates_len = elen;
+			break;
+		default:
+#if 0
+			printk(KERN_DEBUG "IEEE 802.11 element parse ignored "
+				      "unknown element (id=%d elen=%d)\n",
+				      id, elen);
+#endif
+			unknown++;
+			break;
+		}
+
+		left -= elen;
+		pos += elen;
+	}
+
+	/* Do not trigger error if left == 1 as Apple Airport base stations
+	 * send AssocResps that are one spurious byte too long. */
+
+	return unknown ? ParseUnknown : ParseOK;
+}
+
+
+
+
+static int ecw2cw(int ecw)
+{
+	int cw = 1;
+	while (ecw > 0) {
+		cw <<= 1;
+		ecw--;
+	}
+	return cw - 1;
+}
+
+
+static void ieee80211_sta_wmm_params(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta,
+				     u8 *wmm_param, size_t wmm_param_len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_tx_queue_params params;
+	size_t left;
+	int count;
+	u8 *pos;
+
+	if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+		return;
+	count = wmm_param[6] & 0x0f;
+	if (count == ifsta->wmm_last_param_set)
+		return;
+	ifsta->wmm_last_param_set = count;
+
+	pos = wmm_param + 8;
+	left = wmm_param_len - 8;
+
+	memset(&params, 0, sizeof(params));
+
+	if (!local->ops->conf_tx)
+		return;
+
+	local->wmm_acm = 0;
+	for (; left >= 4; left -= 4, pos += 4) {
+		int aci = (pos[0] >> 5) & 0x03;
+		int acm = (pos[0] >> 4) & 0x01;
+		int queue;
+
+		switch (aci) {
+		case 1:
+			queue = IEEE80211_TX_QUEUE_DATA3;
+			if (acm) {
+				local->wmm_acm |= BIT(0) | BIT(3);
+			}
+			break;
+		case 2:
+			queue = IEEE80211_TX_QUEUE_DATA1;
+			if (acm) {
+				local->wmm_acm |= BIT(4) | BIT(5);
+			}
+			break;
+		case 3:
+			queue = IEEE80211_TX_QUEUE_DATA0;
+			if (acm) {
+				local->wmm_acm |= BIT(6) | BIT(7);
+			}
+			break;
+		case 0:
+		default:
+			queue = IEEE80211_TX_QUEUE_DATA2;
+			if (acm) {
+				local->wmm_acm |= BIT(1) | BIT(2);
+			}
+			break;
+		}
+
+		params.aifs = pos[0] & 0x0f;
+		params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+		params.cw_min = ecw2cw(pos[1] & 0x0f);
+		/* TXOP is in units of 32 usec; burst_time in 0.1 ms */
+		params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
+		printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+		       "cWmin=%d cWmax=%d burst=%d\n",
+		       dev->name, queue, aci, acm, params.aifs, params.cw_min,
+		       params.cw_max, params.burst_time);
+		/* TODO: handle ACM (block TX, fallback to next lowest allowed
+		 * AC for now) */
+		if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
+			printk(KERN_DEBUG "%s: failed to set TX queue "
+			       "parameters for queue %d\n", dev->name, queue);
+		}
+	}
+}
+
+
+static void ieee80211_sta_send_associnfo(struct net_device *dev,
+					 struct ieee80211_if_sta *ifsta)
+{
+	char *buf;
+	size_t len;
+	int i;
+	union iwreq_data wrqu;
+
+	if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
+		return;
+
+	buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
+				ifsta->assocresp_ies_len), GFP_ATOMIC);
+	if (!buf)
+		return;
+
+	len = sprintf(buf, "ASSOCINFO(");
+	if (ifsta->assocreq_ies) {
+		len += sprintf(buf + len, "ReqIEs=");
+		for (i = 0; i < ifsta->assocreq_ies_len; i++) {
+			len += sprintf(buf + len, "%02x",
+				       ifsta->assocreq_ies[i]);
+		}
+	}
+	if (ifsta->assocresp_ies) {
+		if (ifsta->assocreq_ies)
+			len += sprintf(buf + len, " ");
+		len += sprintf(buf + len, "RespIEs=");
+		for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+			len += sprintf(buf + len, "%02x",
+				       ifsta->assocresp_ies[i]);
+		}
+	}
+	len += sprintf(buf + len, ")");
+
+	if (len > IW_CUSTOM_MAX) {
+		len = sprintf(buf, "ASSOCRESPIE=");
+		for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+			len += sprintf(buf + len, "%02x",
+				       ifsta->assocresp_ies[i]);
+		}
+	}
+
+	memset(&wrqu, 0, sizeof(wrqu));
+	wrqu.data.length = len;
+	wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+
+	kfree(buf);
+}
+
+
+static void ieee80211_set_associated(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta, int assoc)
+{
+	union iwreq_data wrqu;
+
+	if (ifsta->associated == assoc)
+		return;
+
+	ifsta->associated = assoc;
+
+	if (assoc) {
+		struct ieee80211_sub_if_data *sdata;
+		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+		if (sdata->type != IEEE80211_IF_TYPE_STA)
+			return;
+		netif_carrier_on(dev);
+		ifsta->prev_bssid_set = 1;
+		memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
+		memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
+		ieee80211_sta_send_associnfo(dev, ifsta);
+	} else {
+		netif_carrier_off(dev);
+		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+	}
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+	ifsta->last_probe = jiffies;
+}
+
+static void ieee80211_set_disassoc(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta, int deauth)
+{
+	if (deauth)
+		ifsta->auth_tries = 0;
+	ifsta->assoc_tries = 0;
+	ieee80211_set_associated(dev, ifsta, 0);
+}
+
+static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+			     int encrypt)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_tx_packet_data *pkt_data;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	skb->dev = sdata->local->mdev;
+	skb_set_mac_header(skb, 0);
+	skb_set_network_header(skb, 0);
+	skb_set_transport_header(skb, 0);
+
+	pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+	memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+	pkt_data->ifindex = sdata->dev->ifindex;
+	pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
+	pkt_data->do_not_encrypt = !encrypt;
+
+	dev_queue_xmit(skb);
+}
+
+
+static void ieee80211_send_auth(struct net_device *dev,
+				struct ieee80211_if_sta *ifsta,
+				int transaction, u8 *extra, size_t extra_len,
+				int encrypt)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+			    sizeof(*mgmt) + 6 + extra_len);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
+		       "frame\n", dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
+	memset(mgmt, 0, 24 + 6);
+	mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					   IEEE80211_STYPE_AUTH);
+	if (encrypt)
+		mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
+	mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
+	ifsta->auth_transaction = transaction + 1;
+	mgmt->u.auth.status_code = cpu_to_le16(0);
+	if (extra)
+		memcpy(skb_put(skb, extra_len), extra, extra_len);
+
+	ieee80211_sta_tx(dev, skb, encrypt);
+}
+
+
+static void ieee80211_authenticate(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta)
+{
+	ifsta->auth_tries++;
+	if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
+		printk(KERN_DEBUG "%s: authentication with AP " MAC_FMT
+		       " timed out\n",
+		       dev->name, MAC_ARG(ifsta->bssid));
+		ifsta->state = IEEE80211_DISABLED;
+		return;
+	}
+
+	ifsta->state = IEEE80211_AUTHENTICATE;
+	printk(KERN_DEBUG "%s: authenticate with AP " MAC_FMT "\n",
+	       dev->name, MAC_ARG(ifsta->bssid));
+
+	ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
+
+	mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
+}
+
+
+static void ieee80211_send_assoc(struct net_device *dev,
+				 struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u8 *pos, *ies;
+	int i, len;
+	u16 capab;
+	struct ieee80211_sta_bss *bss;
+	int wmm = 0;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+			    sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
+			    ifsta->ssid_len);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
+		       "frame\n", dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mode = local->oper_hw_mode;
+	capab = ifsta->capab;
+	if (mode->mode == MODE_IEEE80211G) {
+		capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
+			WLAN_CAPABILITY_SHORT_PREAMBLE;
+	}
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+	if (bss) {
+		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+			capab |= WLAN_CAPABILITY_PRIVACY;
+		if (bss->wmm_ie) {
+			wmm = 1;
+		}
+		ieee80211_rx_bss_put(dev, bss);
+	}
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+	if (ifsta->prev_bssid_set) {
+		skb_put(skb, 10);
+		mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+						   IEEE80211_STYPE_REASSOC_REQ);
+		mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
+		mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
+		memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+		       ETH_ALEN);
+	} else {
+		skb_put(skb, 4);
+		mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+						   IEEE80211_STYPE_ASSOC_REQ);
+		mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+		mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
+	}
+
+	/* SSID */
+	ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
+	*pos++ = WLAN_EID_SSID;
+	*pos++ = ifsta->ssid_len;
+	memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+	len = mode->num_rates;
+	if (len > 8)
+		len = 8;
+	pos = skb_put(skb, len + 2);
+	*pos++ = WLAN_EID_SUPP_RATES;
+	*pos++ = len;
+	for (i = 0; i < len; i++) {
+		int rate = mode->rates[i].rate;
+		if (mode->mode == MODE_ATHEROS_TURBO)
+			rate /= 2;
+		*pos++ = (u8) (rate / 5);
+	}
+
+	if (mode->num_rates > len) {
+		pos = skb_put(skb, mode->num_rates - len + 2);
+		*pos++ = WLAN_EID_EXT_SUPP_RATES;
+		*pos++ = mode->num_rates - len;
+		for (i = len; i < mode->num_rates; i++) {
+			int rate = mode->rates[i].rate;
+			if (mode->mode == MODE_ATHEROS_TURBO)
+				rate /= 2;
+			*pos++ = (u8) (rate / 5);
+		}
+	}
+
+	if (ifsta->extra_ie) {
+		pos = skb_put(skb, ifsta->extra_ie_len);
+		memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+	}
+
+	if (wmm && ifsta->wmm_enabled) {
+		pos = skb_put(skb, 9);
+		*pos++ = WLAN_EID_VENDOR_SPECIFIC;
+		*pos++ = 7; /* len */
+		*pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
+		*pos++ = 0x50;
+		*pos++ = 0xf2;
+		*pos++ = 2; /* WME */
+		*pos++ = 0; /* WME info */
+		*pos++ = 1; /* WME ver */
+		*pos++ = 0;
+	}
+
+	kfree(ifsta->assocreq_ies);
+	ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
+	ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_ATOMIC);
+	if (ifsta->assocreq_ies)
+		memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+
+	ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_deauth(struct net_device *dev,
+				  struct ieee80211_if_sta *ifsta, u16 reason)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
+		       "frame\n", dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					   IEEE80211_STYPE_DEAUTH);
+	skb_put(skb, 2);
+	mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+	ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_disassoc(struct net_device *dev,
+				    struct ieee80211_if_sta *ifsta, u16 reason)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
+		       "frame\n", dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					   IEEE80211_STYPE_DISASSOC);
+	skb_put(skb, 2);
+	mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+
+	ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_privacy_mismatch(struct net_device *dev,
+				      struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_sta_bss *bss;
+	int res = 0;
+
+	if (!ifsta || ifsta->mixed_cell ||
+	    ifsta->key_mgmt != IEEE80211_KEY_MGMT_NONE)
+		return 0;
+
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+	if (!bss)
+		return 0;
+
+	if (ieee80211_sta_wep_configured(dev) !=
+	    !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
+		res = 1;
+
+	ieee80211_rx_bss_put(dev, bss);
+
+	return res;
+}
+
+
+static void ieee80211_associate(struct net_device *dev,
+				struct ieee80211_if_sta *ifsta)
+{
+	ifsta->assoc_tries++;
+	if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
+		printk(KERN_DEBUG "%s: association with AP " MAC_FMT
+		       " timed out\n",
+		       dev->name, MAC_ARG(ifsta->bssid));
+		ifsta->state = IEEE80211_DISABLED;
+		return;
+	}
+
+	ifsta->state = IEEE80211_ASSOCIATE;
+	printk(KERN_DEBUG "%s: associate with AP " MAC_FMT "\n",
+	       dev->name, MAC_ARG(ifsta->bssid));
+	if (ieee80211_privacy_mismatch(dev, ifsta)) {
+		printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
+		       "mixed-cell disabled - abort association\n", dev->name);
+		ifsta->state = IEEE80211_DISABLED;
+		return;
+	}
+
+	ieee80211_send_assoc(dev, ifsta);
+
+	mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
+}
+
+
+static void ieee80211_associated(struct net_device *dev,
+				 struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	int disassoc;
+
+	/* TODO: start monitoring current AP signal quality and number of
+	 * missed beacons. Scan other channels every now and then and search
+	 * for better APs. */
+	/* TODO: remove expired BSSes */
+
+	ifsta->state = IEEE80211_ASSOCIATED;
+
+	sta = sta_info_get(local, ifsta->bssid);
+	if (!sta) {
+		printk(KERN_DEBUG "%s: No STA entry for own AP " MAC_FMT "\n",
+		       dev->name, MAC_ARG(ifsta->bssid));
+		disassoc = 1;
+	} else {
+		disassoc = 0;
+		if (time_after(jiffies,
+			       sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
+			if (ifsta->probereq_poll) {
+				printk(KERN_DEBUG "%s: No ProbeResp from "
+				       "current AP " MAC_FMT " - assume out of "
+				       "range\n",
+				       dev->name, MAC_ARG(ifsta->bssid));
+				disassoc = 1;
+				sta_info_free(sta, 0);
+				ifsta->probereq_poll = 0;
+			} else {
+				ieee80211_send_probe_req(dev, ifsta->bssid,
+							 local->scan_ssid,
+							 local->scan_ssid_len);
+				ifsta->probereq_poll = 1;
+			}
+		} else {
+			ifsta->probereq_poll = 0;
+			if (time_after(jiffies, ifsta->last_probe +
+				       IEEE80211_PROBE_INTERVAL)) {
+				ifsta->last_probe = jiffies;
+				ieee80211_send_probe_req(dev, ifsta->bssid,
+							 ifsta->ssid,
+							 ifsta->ssid_len);
+			}
+		}
+		sta_info_put(sta);
+	}
+	if (disassoc) {
+		union iwreq_data wrqu;
+		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+		wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+		mod_timer(&ifsta->timer, jiffies +
+				      IEEE80211_MONITORING_INTERVAL + 30 * HZ);
+	} else {
+		mod_timer(&ifsta->timer, jiffies +
+				      IEEE80211_MONITORING_INTERVAL);
+	}
+}
+
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+				     u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u8 *pos, *supp_rates, *esupp_rates = NULL;
+	int i;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+		       "request\n", dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					   IEEE80211_STYPE_PROBE_REQ);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	if (dst) {
+		memcpy(mgmt->da, dst, ETH_ALEN);
+		memcpy(mgmt->bssid, dst, ETH_ALEN);
+	} else {
+		memset(mgmt->da, 0xff, ETH_ALEN);
+		memset(mgmt->bssid, 0xff, ETH_ALEN);
+	}
+	pos = skb_put(skb, 2 + ssid_len);
+	*pos++ = WLAN_EID_SSID;
+	*pos++ = ssid_len;
+	memcpy(pos, ssid, ssid_len);
+
+	supp_rates = skb_put(skb, 2);
+	supp_rates[0] = WLAN_EID_SUPP_RATES;
+	supp_rates[1] = 0;
+	mode = local->oper_hw_mode;
+	for (i = 0; i < mode->num_rates; i++) {
+		struct ieee80211_rate *rate = &mode->rates[i];
+		if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
+			continue;
+		if (esupp_rates) {
+			pos = skb_put(skb, 1);
+			esupp_rates[1]++;
+		} else if (supp_rates[1] == 8) {
+			esupp_rates = skb_put(skb, 3);
+			esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
+			esupp_rates[1] = 1;
+			pos = &esupp_rates[2];
+		} else {
+			pos = skb_put(skb, 1);
+			supp_rates[1]++;
+		}
+		if (mode->mode == MODE_ATHEROS_TURBO)
+			*pos = rate->rate / 10;
+		else
+			*pos = rate->rate / 5;
+	}
+
+	ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_sta_wep_configured(struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (!sdata || !sdata->default_key ||
+	    sdata->default_key->alg != ALG_WEP)
+		return 0;
+	return 1;
+}
+
+
+static void ieee80211_auth_completed(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta)
+{
+	printk(KERN_DEBUG "%s: authenticated\n", dev->name);
+	ifsta->authenticated = 1;
+	ieee80211_associate(dev, ifsta);
+}
+
+
+static void ieee80211_auth_challenge(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len)
+{
+	u8 *pos;
+	struct ieee802_11_elems elems;
+
+	printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
+	pos = mgmt->u.auth.variable;
+	if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
+	    == ParseFailed) {
+		printk(KERN_DEBUG "%s: failed to parse Auth(challenge)\n",
+		       dev->name);
+		return;
+	}
+	if (!elems.challenge) {
+		printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
+		       "frame\n", dev->name);
+		return;
+	}
+	ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
+			    elems.challenge_len + 2, 1);
+}
+
+
+static void ieee80211_rx_mgmt_auth(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta,
+				   struct ieee80211_mgmt *mgmt,
+				   size_t len)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	u16 auth_alg, auth_transaction, status_code;
+
+	if (ifsta->state != IEEE80211_AUTHENTICATE &&
+	    sdata->type != IEEE80211_IF_TYPE_IBSS) {
+		printk(KERN_DEBUG "%s: authentication frame received from "
+		       MAC_FMT ", but not in authenticate state - ignored\n",
+		       dev->name, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (len < 24 + 6) {
+		printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
+		       "received from " MAC_FMT " - ignored\n",
+		       dev->name, len, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
+	    memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+		printk(KERN_DEBUG "%s: authentication frame received from "
+		       "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
+		       "ignored\n", dev->name, MAC_ARG(mgmt->sa),
+		       MAC_ARG(mgmt->bssid));
+		return;
+	}
+
+	if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
+	    memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
+		printk(KERN_DEBUG "%s: authentication frame received from "
+		       "unknown BSSID (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
+		       "ignored\n", dev->name, MAC_ARG(mgmt->sa),
+		       MAC_ARG(mgmt->bssid));
+		return;
+	}
+
+	auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+	auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+	status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+	printk(KERN_DEBUG "%s: RX authentication from " MAC_FMT " (alg=%d "
+	       "transaction=%d status=%d)\n",
+	       dev->name, MAC_ARG(mgmt->sa), auth_alg,
+	       auth_transaction, status_code);
+
+	if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		/* IEEE 802.11 standard does not require authentication in IBSS
+		 * networks and most implementations do not seem to use it.
+		 * However, try to reply to authentication attempts if someone
+		 * has actually implemented this.
+		 * TODO: Could implement shared key authentication. */
+		if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
+			printk(KERN_DEBUG "%s: unexpected IBSS authentication "
+			       "frame (alg=%d transaction=%d)\n",
+			       dev->name, auth_alg, auth_transaction);
+			return;
+		}
+		ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
+	}
+
+	if (auth_alg != ifsta->auth_alg ||
+	    auth_transaction != ifsta->auth_transaction) {
+		printk(KERN_DEBUG "%s: unexpected authentication frame "
+		       "(alg=%d transaction=%d)\n",
+		       dev->name, auth_alg, auth_transaction);
+		return;
+	}
+
+	if (status_code != WLAN_STATUS_SUCCESS) {
+		printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
+		       "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
+		if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
+			u8 algs[3];
+			const int num_algs = ARRAY_SIZE(algs);
+			int i, pos;
+			algs[0] = algs[1] = algs[2] = 0xff;
+			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+				algs[0] = WLAN_AUTH_OPEN;
+			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+				algs[1] = WLAN_AUTH_SHARED_KEY;
+			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+				algs[2] = WLAN_AUTH_LEAP;
+			if (ifsta->auth_alg == WLAN_AUTH_OPEN)
+				pos = 0;
+			else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
+				pos = 1;
+			else
+				pos = 2;
+			for (i = 0; i < num_algs; i++) {
+				pos++;
+				if (pos >= num_algs)
+					pos = 0;
+				if (algs[pos] == ifsta->auth_alg ||
+				    algs[pos] == 0xff)
+					continue;
+				if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
+				    !ieee80211_sta_wep_configured(dev))
+					continue;
+				ifsta->auth_alg = algs[pos];
+				printk(KERN_DEBUG "%s: set auth_alg=%d for "
+				       "next try\n",
+				       dev->name, ifsta->auth_alg);
+				break;
+			}
+		}
+		return;
+	}
+
+	switch (ifsta->auth_alg) {
+	case WLAN_AUTH_OPEN:
+	case WLAN_AUTH_LEAP:
+		ieee80211_auth_completed(dev, ifsta);
+		break;
+	case WLAN_AUTH_SHARED_KEY:
+		if (ifsta->auth_transaction == 4)
+			ieee80211_auth_completed(dev, ifsta);
+		else
+			ieee80211_auth_challenge(dev, ifsta, mgmt, len);
+		break;
+	}
+}
+
+
+static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len)
+{
+	u16 reason_code;
+
+	if (len < 24 + 2) {
+		printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
+		       "received from " MAC_FMT " - ignored\n",
+		       dev->name, len, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+		printk(KERN_DEBUG "%s: deauthentication frame received from "
+		       "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
+		       "ignored\n", dev->name, MAC_ARG(mgmt->sa),
+		       MAC_ARG(mgmt->bssid));
+		return;
+	}
+
+	reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+
+	printk(KERN_DEBUG "%s: RX deauthentication from " MAC_FMT
+	       " (reason=%d)\n",
+	       dev->name, MAC_ARG(mgmt->sa), reason_code);
+
+	if (ifsta->authenticated) {
+		printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
+	}
+
+	if (ifsta->state == IEEE80211_AUTHENTICATE ||
+	    ifsta->state == IEEE80211_ASSOCIATE ||
+	    ifsta->state == IEEE80211_ASSOCIATED) {
+		ifsta->state = IEEE80211_AUTHENTICATE;
+		mod_timer(&ifsta->timer, jiffies +
+				      IEEE80211_RETRY_AUTH_INTERVAL);
+	}
+
+	ieee80211_set_disassoc(dev, ifsta, 1);
+	ifsta->authenticated = 0;
+}
+
+
+static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
+				       struct ieee80211_if_sta *ifsta,
+				       struct ieee80211_mgmt *mgmt,
+				       size_t len)
+{
+	u16 reason_code;
+
+	if (len < 24 + 2) {
+		printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
+		       "received from " MAC_FMT " - ignored\n",
+		       dev->name, len, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+		printk(KERN_DEBUG "%s: disassociation frame received from "
+		       "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
+		       "ignored\n", dev->name, MAC_ARG(mgmt->sa),
+		       MAC_ARG(mgmt->bssid));
+		return;
+	}
+
+	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+
+	printk(KERN_DEBUG "%s: RX disassociation from " MAC_FMT
+	       " (reason=%d)\n",
+	       dev->name, MAC_ARG(mgmt->sa), reason_code);
+
+	if (ifsta->associated)
+		printk(KERN_DEBUG "%s: disassociated\n", dev->name);
+
+	if (ifsta->state == IEEE80211_ASSOCIATED) {
+		ifsta->state = IEEE80211_ASSOCIATE;
+		mod_timer(&ifsta->timer, jiffies +
+				      IEEE80211_RETRY_AUTH_INTERVAL);
+	}
+
+	ieee80211_set_disassoc(dev, ifsta, 0);
+}
+
+
+static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
+					 struct ieee80211_if_sta *ifsta,
+					 struct ieee80211_mgmt *mgmt,
+					 size_t len,
+					 int reassoc)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw_mode *mode;
+	struct sta_info *sta;
+	u32 rates;
+	u16 capab_info, status_code, aid;
+	struct ieee802_11_elems elems;
+	u8 *pos;
+	int i, j;
+
+	/* AssocResp and ReassocResp have identical structure, so process both
+	 * of them in this function. */
+
+	if (ifsta->state != IEEE80211_ASSOCIATE) {
+		printk(KERN_DEBUG "%s: association frame received from "
+		       MAC_FMT ", but not in associate state - ignored\n",
+		       dev->name, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (len < 24 + 6) {
+		printk(KERN_DEBUG "%s: too short (%zd) association frame "
+		       "received from " MAC_FMT " - ignored\n",
+		       dev->name, len, MAC_ARG(mgmt->sa));
+		return;
+	}
+
+	if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+		printk(KERN_DEBUG "%s: association frame received from "
+		       "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
+		       "ignored\n", dev->name, MAC_ARG(mgmt->sa),
+		       MAC_ARG(mgmt->bssid));
+		return;
+	}
+
+	capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+	aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+	if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
+		printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
+		       "set\n", dev->name, aid);
+	aid &= ~(BIT(15) | BIT(14));
+
+	printk(KERN_DEBUG "%s: RX %sssocResp from " MAC_FMT " (capab=0x%x "
+	       "status=%d aid=%d)\n",
+	       dev->name, reassoc ? "Rea" : "A", MAC_ARG(mgmt->sa),
+	       capab_info, status_code, aid);
+
+	if (status_code != WLAN_STATUS_SUCCESS) {
+		printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
+		       dev->name, status_code);
+		return;
+	}
+
+	pos = mgmt->u.assoc_resp.variable;
+	if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
+	    == ParseFailed) {
+		printk(KERN_DEBUG "%s: failed to parse AssocResp\n",
+		       dev->name);
+		return;
+	}
+
+	if (!elems.supp_rates) {
+		printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
+		       dev->name);
+		return;
+	}
+
+	printk(KERN_DEBUG "%s: associated\n", dev->name);
+	ifsta->aid = aid;
+	ifsta->ap_capab = capab_info;
+
+	kfree(ifsta->assocresp_ies);
+	ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
+	ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_ATOMIC);
+	if (ifsta->assocresp_ies)
+		memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
+
+	ieee80211_set_associated(dev, ifsta, 1);
+
+	/* Add STA entry for the AP */
+	sta = sta_info_get(local, ifsta->bssid);
+	if (!sta) {
+		struct ieee80211_sta_bss *bss;
+		sta = sta_info_add(local, dev, ifsta->bssid, GFP_ATOMIC);
+		if (!sta) {
+			printk(KERN_DEBUG "%s: failed to add STA entry for the"
+			       " AP\n", dev->name);
+			return;
+		}
+		bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+		if (bss) {
+			sta->last_rssi = bss->rssi;
+			sta->last_signal = bss->signal;
+			sta->last_noise = bss->noise;
+			ieee80211_rx_bss_put(dev, bss);
+		}
+	}
+
+	sta->dev = dev;
+	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
+	sta->assoc_ap = 1;
+
+	rates = 0;
+	mode = local->oper_hw_mode;
+	for (i = 0; i < elems.supp_rates_len; i++) {
+		int rate = (elems.supp_rates[i] & 0x7f) * 5;
+		if (mode->mode == MODE_ATHEROS_TURBO)
+			rate *= 2;
+		for (j = 0; j < mode->num_rates; j++)
+			if (mode->rates[j].rate == rate)
+				rates |= BIT(j);
+	}
+	for (i = 0; i < elems.ext_supp_rates_len; i++) {
+		int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
+		if (mode->mode == MODE_ATHEROS_TURBO)
+			rate *= 2;
+		for (j = 0; j < mode->num_rates; j++)
+			if (mode->rates[j].rate == rate)
+				rates |= BIT(j);
+	}
+	sta->supp_rates = rates;
+
+	rate_control_rate_init(sta, local);
+
+	if (elems.wmm_param && ifsta->wmm_enabled) {
+		sta->flags |= WLAN_STA_WME;
+		ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+					 elems.wmm_param_len);
+	}
+
+
+	sta_info_put(sta);
+
+	ieee80211_associated(dev, ifsta);
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
+					struct ieee80211_sta_bss *bss)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
+	local->sta_bss_hash[STA_HASH(bss->bssid)] = bss;
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
+					struct ieee80211_sta_bss *bss)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *b, *prev = NULL;
+	b = local->sta_bss_hash[STA_HASH(bss->bssid)];
+	while (b) {
+		if (b == bss) {
+			if (!prev)
+				local->sta_bss_hash[STA_HASH(bss->bssid)] =
+					bss->hnext;
+			else
+				prev->hnext = bss->hnext;
+			break;
+		}
+		prev = b;
+		b = b->hnext;
+	}
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *bss;
+
+	bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
+	if (!bss)
+		return NULL;
+	memset(bss, 0, sizeof(*bss));
+	atomic_inc(&bss->users);
+	atomic_inc(&bss->users);
+	memcpy(bss->bssid, bssid, ETH_ALEN);
+
+	spin_lock_bh(&local->sta_bss_lock);
+	/* TODO: order by RSSI? */
+	list_add_tail(&bss->list, &local->sta_bss_list);
+	__ieee80211_rx_bss_hash_add(dev, bss);
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *bss;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	bss = local->sta_bss_hash[STA_HASH(bssid)];
+	while (bss) {
+		if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0) {
+			atomic_inc(&bss->users);
+			break;
+		}
+		bss = bss->hnext;
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+
+
+static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
+{
+	kfree(bss->wpa_ie);
+	kfree(bss->rsn_ie);
+	kfree(bss->wmm_ie);
+	kfree(bss);
+}
+
+
+static void ieee80211_rx_bss_put(struct net_device *dev,
+				 struct ieee80211_sta_bss *bss)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	if (!atomic_dec_and_test(&bss->users))
+		return;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	__ieee80211_rx_bss_hash_del(dev, bss);
+	list_del(&bss->list);
+	spin_unlock_bh(&local->sta_bss_lock);
+	ieee80211_rx_bss_free(bss);
+}
+
+
+void ieee80211_rx_bss_list_init(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	spin_lock_init(&local->sta_bss_lock);
+	INIT_LIST_HEAD(&local->sta_bss_list);
+}
+
+
+void ieee80211_rx_bss_list_deinit(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *bss, *tmp;
+
+	list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
+		ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static void ieee80211_rx_bss_info(struct net_device *dev,
+				  struct ieee80211_mgmt *mgmt,
+				  size_t len,
+				  struct ieee80211_rx_status *rx_status,
+				  int beacon)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee802_11_elems elems;
+	size_t baselen;
+	int channel, invalid = 0, clen;
+	struct ieee80211_sta_bss *bss;
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	u64 timestamp;
+
+	if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
+		return; /* ignore ProbeResp to foreign address */
+
+#if 0
+	printk(KERN_DEBUG "%s: RX %s from " MAC_FMT " to " MAC_FMT "\n",
+	       dev->name, beacon ? "Beacon" : "Probe Response",
+	       MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da));
+#endif
+
+	baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+	if (baselen > len)
+		return;
+
+	timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+
+	if (sdata->type == IEEE80211_IF_TYPE_IBSS && beacon &&
+	    memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+		static unsigned long last_tsf_debug = 0;
+		u64 tsf;
+		if (local->ops->get_tsf)
+			tsf = local->ops->get_tsf(local_to_hw(local));
+		else
+			tsf = -1LLU;
+		if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
+			printk(KERN_DEBUG "RX beacon SA=" MAC_FMT " BSSID="
+			       MAC_FMT " TSF=0x%llx BCN=0x%llx diff=%lld "
+			       "@%lu\n",
+			       MAC_ARG(mgmt->sa), MAC_ARG(mgmt->bssid),
+			       (unsigned long long)tsf,
+			       (unsigned long long)timestamp,
+			       (unsigned long long)(tsf - timestamp),
+			       jiffies);
+			last_tsf_debug = jiffies;
+		}
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+	}
+
+	if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
+				   &elems) == ParseFailed)
+		invalid = 1;
+
+	if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
+	    memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
+	    (sta = sta_info_get(local, mgmt->sa))) {
+		struct ieee80211_hw_mode *mode;
+		struct ieee80211_rate *rates;
+		size_t num_rates;
+		u32 supp_rates, prev_rates;
+		int i, j;
+
+		mode = local->sta_scanning ?
+		       local->scan_hw_mode : local->oper_hw_mode;
+		rates = mode->rates;
+		num_rates = mode->num_rates;
+
+		supp_rates = 0;
+		for (i = 0; i < elems.supp_rates_len +
+			     elems.ext_supp_rates_len; i++) {
+			u8 rate = 0;
+			int own_rate;
+			if (i < elems.supp_rates_len)
+				rate = elems.supp_rates[i];
+			else if (elems.ext_supp_rates)
+				rate = elems.ext_supp_rates
+					[i - elems.supp_rates_len];
+			own_rate = 5 * (rate & 0x7f);
+			if (mode->mode == MODE_ATHEROS_TURBO)
+				own_rate *= 2;
+			for (j = 0; j < num_rates; j++)
+				if (rates[j].rate == own_rate)
+					supp_rates |= BIT(j);
+		}
+
+		prev_rates = sta->supp_rates;
+		sta->supp_rates &= supp_rates;
+		if (sta->supp_rates == 0) {
+			/* No matching rates - this should not really happen.
+			 * Make sure that at least one rate is marked
+			 * supported to avoid issues with TX rate ctrl. */
+			sta->supp_rates = sdata->u.sta.supp_rates_bits;
+		}
+		if (sta->supp_rates != prev_rates) {
+			printk(KERN_DEBUG "%s: updated supp_rates set for "
+			       MAC_FMT " based on beacon info (0x%x & 0x%x -> "
+			       "0x%x)\n",
+			       dev->name, MAC_ARG(sta->addr), prev_rates,
+			       supp_rates, sta->supp_rates);
+		}
+		sta_info_put(sta);
+	}
+
+	if (!elems.ssid)
+		return;
+
+	if (elems.ds_params && elems.ds_params_len == 1)
+		channel = elems.ds_params[0];
+	else
+		channel = rx_status->channel;
+
+	bss = ieee80211_rx_bss_get(dev, mgmt->bssid);
+	if (!bss) {
+		bss = ieee80211_rx_bss_add(dev, mgmt->bssid);
+		if (!bss)
+			return;
+	} else {
+#if 0
+		/* TODO: order by RSSI? */
+		spin_lock_bh(&local->sta_bss_lock);
+		list_move_tail(&bss->list, &local->sta_bss_list);
+		spin_unlock_bh(&local->sta_bss_lock);
+#endif
+	}
+
+	if (bss->probe_resp && beacon) {
+		/* Do not allow beacon to override data from Probe Response. */
+		ieee80211_rx_bss_put(dev, bss);
+		return;
+	}
+
+	bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
+	bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
+	if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) {
+		memcpy(bss->ssid, elems.ssid, elems.ssid_len);
+		bss->ssid_len = elems.ssid_len;
+	}
+
+	bss->supp_rates_len = 0;
+	if (elems.supp_rates) {
+		clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+		if (clen > elems.supp_rates_len)
+			clen = elems.supp_rates_len;
+		memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
+		       clen);
+		bss->supp_rates_len += clen;
+	}
+	if (elems.ext_supp_rates) {
+		clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+		if (clen > elems.ext_supp_rates_len)
+			clen = elems.ext_supp_rates_len;
+		memcpy(&bss->supp_rates[bss->supp_rates_len],
+		       elems.ext_supp_rates, clen);
+		bss->supp_rates_len += clen;
+	}
+
+	if (elems.wpa &&
+	    (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
+	     memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
+		kfree(bss->wpa_ie);
+		bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
+		if (bss->wpa_ie) {
+			memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
+			bss->wpa_ie_len = elems.wpa_len + 2;
+		} else
+			bss->wpa_ie_len = 0;
+	} else if (!elems.wpa && bss->wpa_ie) {
+		kfree(bss->wpa_ie);
+		bss->wpa_ie = NULL;
+		bss->wpa_ie_len = 0;
+	}
+
+	if (elems.rsn &&
+	    (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
+	     memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
+		kfree(bss->rsn_ie);
+		bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
+		if (bss->rsn_ie) {
+			memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
+			bss->rsn_ie_len = elems.rsn_len + 2;
+		} else
+			bss->rsn_ie_len = 0;
+	} else if (!elems.rsn && bss->rsn_ie) {
+		kfree(bss->rsn_ie);
+		bss->rsn_ie = NULL;
+		bss->rsn_ie_len = 0;
+	}
+
+	if (elems.wmm_param &&
+	    (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
+	     memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
+		kfree(bss->wmm_ie);
+		bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
+		if (bss->wmm_ie) {
+			memcpy(bss->wmm_ie, elems.wmm_param - 2,
+			       elems.wmm_param_len + 2);
+			bss->wmm_ie_len = elems.wmm_param_len + 2;
+		} else
+			bss->wmm_ie_len = 0;
+	} else if (!elems.wmm_param && bss->wmm_ie) {
+		kfree(bss->wmm_ie);
+		bss->wmm_ie = NULL;
+		bss->wmm_ie_len = 0;
+	}
+
+
+	bss->hw_mode = rx_status->phymode;
+	bss->channel = channel;
+	bss->freq = rx_status->freq;
+	if (channel != rx_status->channel &&
+	    (bss->hw_mode == MODE_IEEE80211G ||
+	     bss->hw_mode == MODE_IEEE80211B) &&
+	    channel >= 1 && channel <= 14) {
+		static const int freq_list[] = {
+			2412, 2417, 2422, 2427, 2432, 2437, 2442,
+			2447, 2452, 2457, 2462, 2467, 2472, 2484
+		};
+		/* IEEE 802.11g/b mode can receive packets from neighboring
+		 * channels, so map the channel into frequency. */
+		bss->freq = freq_list[channel - 1];
+	}
+	bss->timestamp = timestamp;
+	bss->last_update = jiffies;
+	bss->rssi = rx_status->ssi;
+	bss->signal = rx_status->signal;
+	bss->noise = rx_status->noise;
+	if (!beacon)
+		bss->probe_resp++;
+	ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
+					 struct ieee80211_mgmt *mgmt,
+					 size_t len,
+					 struct ieee80211_rx_status *rx_status)
+{
+	ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
+}
+
+
+static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len,
+				     struct ieee80211_rx_status *rx_status)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_sta *ifsta;
+	int use_protection;
+	size_t baselen;
+	struct ieee802_11_elems elems;
+
+	ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type != IEEE80211_IF_TYPE_STA)
+		return;
+	ifsta = &sdata->u.sta;
+
+	if (!ifsta->associated ||
+	    memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+		return;
+
+	/* Process beacon from the current BSS */
+	baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+	if (baselen > len)
+		return;
+
+	if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
+				   &elems) == ParseFailed)
+		return;
+
+	use_protection = 0;
+	if (elems.erp_info && elems.erp_info_len >= 1) {
+		use_protection =
+			(elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
+	}
+
+	if (use_protection != !!ifsta->use_protection) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
+			       MAC_FMT ")\n",
+			       dev->name,
+			       use_protection ? "enabled" : "disabled",
+			       MAC_ARG(ifsta->bssid));
+		}
+		ifsta->use_protection = use_protection ? 1 : 0;
+		local->cts_protect_erp_frames = use_protection;
+	}
+
+	if (elems.wmm_param && ifsta->wmm_enabled) {
+		ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+					 elems.wmm_param_len);
+	}
+}
+
+
+static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
+					struct ieee80211_if_sta *ifsta,
+					struct ieee80211_mgmt *mgmt,
+					size_t len,
+					struct ieee80211_rx_status *rx_status)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	int tx_last_beacon;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *resp;
+	u8 *pos, *end;
+
+	if (sdata->type != IEEE80211_IF_TYPE_IBSS ||
+	    ifsta->state != IEEE80211_IBSS_JOINED ||
+	    len < 24 + 2 || !ifsta->probe_resp)
+		return;
+
+	if (local->ops->tx_last_beacon)
+		tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
+	else
+		tx_last_beacon = 1;
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+	printk(KERN_DEBUG "%s: RX ProbeReq SA=" MAC_FMT " DA=" MAC_FMT " BSSID="
+	       MAC_FMT " (tx_last_beacon=%d)\n",
+	       dev->name, MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da),
+	       MAC_ARG(mgmt->bssid), tx_last_beacon);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+	if (!tx_last_beacon)
+		return;
+
+	if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
+	    memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
+		return;
+
+	end = ((u8 *) mgmt) + len;
+	pos = mgmt->u.probe_req.variable;
+	if (pos[0] != WLAN_EID_SSID ||
+	    pos + 2 + pos[1] > end) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
+			       "from " MAC_FMT "\n",
+			       dev->name, MAC_ARG(mgmt->sa));
+		}
+		return;
+	}
+	if (pos[1] != 0 &&
+	    (pos[1] != ifsta->ssid_len ||
+	     memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
+		/* Ignore ProbeReq for foreign SSID */
+		return;
+	}
+
+	/* Reply with ProbeResp */
+	skb = skb_copy(ifsta->probe_resp, GFP_ATOMIC);
+	if (!skb)
+		return;
+
+	resp = (struct ieee80211_mgmt *) skb->data;
+	memcpy(resp->da, mgmt->sa, ETH_ALEN);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+	printk(KERN_DEBUG "%s: Sending ProbeResp to " MAC_FMT "\n",
+	       dev->name, MAC_ARG(resp->da));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+	ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_sta *ifsta;
+	struct ieee80211_mgmt *mgmt;
+	u16 fc;
+
+	if (skb->len < 24)
+		goto fail;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	ifsta = &sdata->u.sta;
+
+	mgmt = (struct ieee80211_mgmt *) skb->data;
+	fc = le16_to_cpu(mgmt->frame_control);
+
+	switch (fc & IEEE80211_FCTL_STYPE) {
+	case IEEE80211_STYPE_PROBE_REQ:
+	case IEEE80211_STYPE_PROBE_RESP:
+	case IEEE80211_STYPE_BEACON:
+		memcpy(skb->cb, rx_status, sizeof(*rx_status));
+	case IEEE80211_STYPE_AUTH:
+	case IEEE80211_STYPE_ASSOC_RESP:
+	case IEEE80211_STYPE_REASSOC_RESP:
+	case IEEE80211_STYPE_DEAUTH:
+	case IEEE80211_STYPE_DISASSOC:
+		skb_queue_tail(&ifsta->skb_queue, skb);
+		queue_work(local->hw.workqueue, &ifsta->work);
+		return;
+	default:
+		printk(KERN_DEBUG "%s: received unknown management frame - "
+		       "stype=%d\n", dev->name,
+		       (fc & IEEE80211_FCTL_STYPE) >> 4);
+		break;
+	}
+
+ fail:
+	kfree_skb(skb);
+}
+
+
+static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
+					 struct sk_buff *skb)
+{
+	struct ieee80211_rx_status *rx_status;
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_sta *ifsta;
+	struct ieee80211_mgmt *mgmt;
+	u16 fc;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	ifsta = &sdata->u.sta;
+
+	rx_status = (struct ieee80211_rx_status *) skb->cb;
+	mgmt = (struct ieee80211_mgmt *) skb->data;
+	fc = le16_to_cpu(mgmt->frame_control);
+
+	switch (fc & IEEE80211_FCTL_STYPE) {
+	case IEEE80211_STYPE_PROBE_REQ:
+		ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
+					    rx_status);
+		break;
+	case IEEE80211_STYPE_PROBE_RESP:
+		ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
+		break;
+	case IEEE80211_STYPE_BEACON:
+		ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
+		break;
+	case IEEE80211_STYPE_AUTH:
+		ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
+		break;
+	case IEEE80211_STYPE_ASSOC_RESP:
+		ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 0);
+		break;
+	case IEEE80211_STYPE_REASSOC_RESP:
+		ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 1);
+		break;
+	case IEEE80211_STYPE_DEAUTH:
+		ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
+		break;
+	case IEEE80211_STYPE_DISASSOC:
+		ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
+		break;
+	}
+
+	kfree_skb(skb);
+}
+
+
+void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status)
+{
+	struct ieee80211_mgmt *mgmt;
+	u16 fc;
+
+	if (skb->len < 24) {
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	mgmt = (struct ieee80211_mgmt *) skb->data;
+	fc = le16_to_cpu(mgmt->frame_control);
+
+	if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+		if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
+			ieee80211_rx_mgmt_probe_resp(dev, mgmt,
+						     skb->len, rx_status);
+		} else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
+			ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
+						 rx_status);
+		}
+	}
+
+	dev_kfree_skb(skb);
+}
+
+
+static int ieee80211_sta_active_ibss(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	int active = 0;
+	struct sta_info *sta;
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		if (sta->dev == dev &&
+		    time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
+			       jiffies)) {
+			active++;
+			break;
+		}
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	return active;
+}
+
+
+static void ieee80211_sta_expire(struct net_device *dev)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta, *tmp;
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
+		if (time_after(jiffies, sta->last_rx +
+			       IEEE80211_IBSS_INACTIVITY_LIMIT)) {
+			printk(KERN_DEBUG "%s: expiring inactive STA " MAC_FMT
+			       "\n", dev->name, MAC_ARG(sta->addr));
+			sta_info_free(sta, 1);
+		}
+	spin_unlock_bh(&local->sta_lock);
+}
+
+
+static void ieee80211_sta_merge_ibss(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta)
+{
+	mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+	ieee80211_sta_expire(dev);
+	if (ieee80211_sta_active_ibss(dev))
+		return;
+
+	printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
+	       "IBSS networks with same SSID (merge)\n", dev->name);
+	ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
+}
+
+
+void ieee80211_sta_timer(unsigned long data)
+{
+	struct ieee80211_sub_if_data *sdata =
+		(struct ieee80211_sub_if_data *) data;
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct ieee80211_local *local = wdev_priv(&sdata->wdev);
+
+	set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+	queue_work(local->hw.workqueue, &ifsta->work);
+}
+
+
+void ieee80211_sta_work(struct work_struct *work)
+{
+	struct ieee80211_sub_if_data *sdata =
+		container_of(work, struct ieee80211_sub_if_data, u.sta.work);
+	struct net_device *dev = sdata->dev;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_if_sta *ifsta;
+	struct sk_buff *skb;
+
+	if (!netif_running(dev))
+		return;
+
+	if (local->sta_scanning)
+		return;
+
+	if (sdata->type != IEEE80211_IF_TYPE_STA &&
+	    sdata->type != IEEE80211_IF_TYPE_IBSS) {
+		printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
+		       "(type=%d)\n", dev->name, sdata->type);
+		return;
+	}
+	ifsta = &sdata->u.sta;
+
+	while ((skb = skb_dequeue(&ifsta->skb_queue)))
+		ieee80211_sta_rx_queued_mgmt(dev, skb);
+
+	if (ifsta->state != IEEE80211_AUTHENTICATE &&
+	    ifsta->state != IEEE80211_ASSOCIATE &&
+	    test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
+		ieee80211_sta_start_scan(dev, NULL, 0);
+		return;
+	}
+
+	if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
+		if (ieee80211_sta_config_auth(dev, ifsta))
+			return;
+		clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+	} else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
+		return;
+
+	switch (ifsta->state) {
+	case IEEE80211_DISABLED:
+		break;
+	case IEEE80211_AUTHENTICATE:
+		ieee80211_authenticate(dev, ifsta);
+		break;
+	case IEEE80211_ASSOCIATE:
+		ieee80211_associate(dev, ifsta);
+		break;
+	case IEEE80211_ASSOCIATED:
+		ieee80211_associated(dev, ifsta);
+		break;
+	case IEEE80211_IBSS_SEARCH:
+		ieee80211_sta_find_ibss(dev, ifsta);
+		break;
+	case IEEE80211_IBSS_JOINED:
+		ieee80211_sta_merge_ibss(dev, ifsta);
+		break;
+	default:
+		printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
+		       ifsta->state);
+		break;
+	}
+
+	if (ieee80211_privacy_mismatch(dev, ifsta)) {
+		printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+		       "mixed-cell disabled - disassociate\n", dev->name);
+
+		ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
+		ieee80211_set_disassoc(dev, ifsta, 0);
+	}
+}
+
+
+static void ieee80211_sta_reset_auth(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (local->ops->reset_tsf) {
+		/* Reset own TSF to allow time synchronization work. */
+		local->ops->reset_tsf(local_to_hw(local));
+	}
+
+	ifsta->wmm_last_param_set = -1; /* allow any WMM update */
+
+
+	if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+		ifsta->auth_alg = WLAN_AUTH_OPEN;
+	else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+		ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
+	else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+		ifsta->auth_alg = WLAN_AUTH_LEAP;
+	else
+		ifsta->auth_alg = WLAN_AUTH_OPEN;
+	printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
+	       ifsta->auth_alg);
+	ifsta->auth_transaction = -1;
+	ifsta->associated = ifsta->auth_tries = ifsta->assoc_tries = 0;
+	netif_carrier_off(dev);
+}
+
+
+void ieee80211_sta_req_auth(struct net_device *dev,
+			    struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (sdata->type != IEEE80211_IF_TYPE_STA)
+		return;
+
+	if ((ifsta->bssid_set || ifsta->auto_bssid_sel) &&
+	    (ifsta->ssid_set || ifsta->auto_ssid_sel)) {
+		set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+		queue_work(local->hw.workqueue, &ifsta->work);
+	}
+}
+
+static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
+				    const char *ssid, int ssid_len)
+{
+	int tmp, hidden_ssid;
+
+	if (!memcmp(ifsta->ssid, ssid, ssid_len))
+		return 1;
+
+	if (ifsta->auto_bssid_sel)
+		return 0;
+
+	hidden_ssid = 1;
+	tmp = ssid_len;
+	while (tmp--) {
+		if (ssid[tmp] != '\0') {
+			hidden_ssid = 0;
+			break;
+		}
+	}
+
+	if (hidden_ssid && ifsta->ssid_len == ssid_len)
+		return 1;
+
+	if (ssid_len == 1 && ssid[0] == ' ')
+		return 1;
+
+	return 0;
+}
+
+static int ieee80211_sta_config_auth(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_sta_bss *bss, *selected = NULL;
+	int top_rssi = 0, freq;
+
+	rtnl_lock();
+
+	if (!ifsta->auto_channel_sel && !ifsta->auto_bssid_sel &&
+	    !ifsta->auto_ssid_sel) {
+		ifsta->state = IEEE80211_AUTHENTICATE;
+		rtnl_unlock();
+		ieee80211_sta_reset_auth(dev, ifsta);
+		return 0;
+	}
+
+	spin_lock_bh(&local->sta_bss_lock);
+	freq = local->oper_channel->freq;
+	list_for_each_entry(bss, &local->sta_bss_list, list) {
+		if (!(bss->capability & WLAN_CAPABILITY_ESS))
+			continue;
+
+		if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
+		    !!sdata->default_key)
+			continue;
+
+		if (!ifsta->auto_channel_sel && bss->freq != freq)
+			continue;
+
+		if (!ifsta->auto_bssid_sel &&
+		    memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
+			continue;
+
+		if (!ifsta->auto_ssid_sel &&
+		    !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
+			continue;
+
+		if (!selected || top_rssi < bss->rssi) {
+			selected = bss;
+			top_rssi = bss->rssi;
+		}
+	}
+	if (selected)
+		atomic_inc(&selected->users);
+	spin_unlock_bh(&local->sta_bss_lock);
+
+	if (selected) {
+		ieee80211_set_channel(local, -1, selected->freq);
+		if (!ifsta->ssid_set)
+			ieee80211_sta_set_ssid(dev, selected->ssid,
+					       selected->ssid_len);
+		ieee80211_sta_set_bssid(dev, selected->bssid);
+		ieee80211_rx_bss_put(dev, selected);
+		ifsta->state = IEEE80211_AUTHENTICATE;
+		rtnl_unlock();
+		ieee80211_sta_reset_auth(dev, ifsta);
+		return 0;
+	} else {
+		if (ifsta->state != IEEE80211_AUTHENTICATE) {
+			ieee80211_sta_start_scan(dev, NULL, 0);
+			ifsta->state = IEEE80211_AUTHENTICATE;
+			set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+		} else
+			ifsta->state = IEEE80211_DISABLED;
+	}
+	rtnl_unlock();
+	return -1;
+}
+
+static int ieee80211_sta_join_ibss(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta,
+				   struct ieee80211_sta_bss *bss)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	int res, rates, i, j;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	struct ieee80211_tx_control control;
+	struct ieee80211_rate *rate;
+	struct ieee80211_hw_mode *mode;
+	struct rate_control_extra extra;
+	u8 *pos;
+	struct ieee80211_sub_if_data *sdata;
+
+	/* Remove possible STA entries from other IBSS networks. */
+	sta_info_flush(local, NULL);
+
+	if (local->ops->reset_tsf) {
+		/* Reset own TSF to allow time synchronization work. */
+		local->ops->reset_tsf(local_to_hw(local));
+	}
+	memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+	res = ieee80211_if_config(dev);
+	if (res)
+		return res;
+
+	local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	sdata->drop_unencrypted = bss->capability &
+		WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+
+	res = ieee80211_set_channel(local, -1, bss->freq);
+
+	if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
+		printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
+		       "(%d MHz)\n", dev->name, local->hw.conf.channel,
+		       local->hw.conf.freq);
+		return -1;
+	}
+
+	/* Set beacon template based on scan results */
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+	do {
+		if (!skb)
+			break;
+
+		skb_reserve(skb, local->hw.extra_tx_headroom);
+
+		mgmt = (struct ieee80211_mgmt *)
+			skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+		memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+		mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+						   IEEE80211_STYPE_BEACON);
+		memset(mgmt->da, 0xff, ETH_ALEN);
+		memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+		mgmt->u.beacon.beacon_int =
+			cpu_to_le16(local->hw.conf.beacon_int);
+		mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
+
+		pos = skb_put(skb, 2 + ifsta->ssid_len);
+		*pos++ = WLAN_EID_SSID;
+		*pos++ = ifsta->ssid_len;
+		memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+		rates = bss->supp_rates_len;
+		if (rates > 8)
+			rates = 8;
+		pos = skb_put(skb, 2 + rates);
+		*pos++ = WLAN_EID_SUPP_RATES;
+		*pos++ = rates;
+		memcpy(pos, bss->supp_rates, rates);
+
+		pos = skb_put(skb, 2 + 1);
+		*pos++ = WLAN_EID_DS_PARAMS;
+		*pos++ = 1;
+		*pos++ = bss->channel;
+
+		pos = skb_put(skb, 2 + 2);
+		*pos++ = WLAN_EID_IBSS_PARAMS;
+		*pos++ = 2;
+		/* FIX: set ATIM window based on scan results */
+		*pos++ = 0;
+		*pos++ = 0;
+
+		if (bss->supp_rates_len > 8) {
+			rates = bss->supp_rates_len - 8;
+			pos = skb_put(skb, 2 + rates);
+			*pos++ = WLAN_EID_EXT_SUPP_RATES;
+			*pos++ = rates;
+			memcpy(pos, &bss->supp_rates[8], rates);
+		}
+
+		memset(&control, 0, sizeof(control));
+		memset(&extra, 0, sizeof(extra));
+		extra.mode = local->oper_hw_mode;
+		rate = rate_control_get_rate(local, dev, skb, &extra);
+		if (!rate) {
+			printk(KERN_DEBUG "%s: Failed to determine TX rate "
+			       "for IBSS beacon\n", dev->name);
+			break;
+		}
+		control.tx_rate = (local->short_preamble &&
+				   (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
+			rate->val2 : rate->val;
+		control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+		control.power_level = local->hw.conf.power_level;
+		control.flags |= IEEE80211_TXCTL_NO_ACK;
+		control.retry_limit = 1;
+
+		ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
+		if (ifsta->probe_resp) {
+			mgmt = (struct ieee80211_mgmt *)
+				ifsta->probe_resp->data;
+			mgmt->frame_control =
+				IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					     IEEE80211_STYPE_PROBE_RESP);
+		} else {
+			printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
+			       "template for IBSS\n", dev->name);
+		}
+
+		if (local->ops->beacon_update &&
+		    local->ops->beacon_update(local_to_hw(local),
+					     skb, &control) == 0) {
+			printk(KERN_DEBUG "%s: Configured IBSS beacon "
+			       "template based on scan results\n", dev->name);
+			skb = NULL;
+		}
+
+		rates = 0;
+		mode = local->oper_hw_mode;
+		for (i = 0; i < bss->supp_rates_len; i++) {
+			int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
+			if (mode->mode == MODE_ATHEROS_TURBO)
+				bitrate *= 2;
+			for (j = 0; j < mode->num_rates; j++)
+				if (mode->rates[j].rate == bitrate)
+					rates |= BIT(j);
+		}
+		ifsta->supp_rates_bits = rates;
+	} while (0);
+
+	if (skb) {
+		printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
+		       "template\n", dev->name);
+		dev_kfree_skb(skb);
+	}
+
+	ifsta->state = IEEE80211_IBSS_JOINED;
+	mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+	ieee80211_rx_bss_put(dev, bss);
+
+	return res;
+}
+
+
+static int ieee80211_sta_create_ibss(struct net_device *dev,
+				     struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *bss;
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_hw_mode *mode;
+	u8 bssid[ETH_ALEN], *pos;
+	int i;
+
+#if 0
+	/* Easier testing, use fixed BSSID. */
+	memset(bssid, 0xfe, ETH_ALEN);
+#else
+	/* Generate random, not broadcast, locally administered BSSID. Mix in
+	 * own MAC address to make sure that devices that do not have proper
+	 * random number generator get different BSSID. */
+	get_random_bytes(bssid, ETH_ALEN);
+	for (i = 0; i < ETH_ALEN; i++)
+		bssid[i] ^= dev->dev_addr[i];
+	bssid[0] &= ~0x01;
+	bssid[0] |= 0x02;
+#endif
+
+	printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID " MAC_FMT "\n",
+	       dev->name, MAC_ARG(bssid));
+
+	bss = ieee80211_rx_bss_add(dev, bssid);
+	if (!bss)
+		return -ENOMEM;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	mode = local->oper_hw_mode;
+
+	if (local->hw.conf.beacon_int == 0)
+		local->hw.conf.beacon_int = 100;
+	bss->beacon_int = local->hw.conf.beacon_int;
+	bss->hw_mode = local->hw.conf.phymode;
+	bss->channel = local->hw.conf.channel;
+	bss->freq = local->hw.conf.freq;
+	bss->last_update = jiffies;
+	bss->capability = WLAN_CAPABILITY_IBSS;
+	if (sdata->default_key) {
+		bss->capability |= WLAN_CAPABILITY_PRIVACY;
+	} else
+		sdata->drop_unencrypted = 0;
+	bss->supp_rates_len = mode->num_rates;
+	pos = bss->supp_rates;
+	for (i = 0; i < mode->num_rates; i++) {
+		int rate = mode->rates[i].rate;
+		if (mode->mode == MODE_ATHEROS_TURBO)
+			rate /= 2;
+		*pos++ = (u8) (rate / 5);
+	}
+
+	return ieee80211_sta_join_ibss(dev, ifsta, bss);
+}
+
+
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+				   struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sta_bss *bss;
+	int found = 0;
+	u8 bssid[ETH_ALEN];
+	int active_ibss;
+
+	if (ifsta->ssid_len == 0)
+		return -EINVAL;
+
+	active_ibss = ieee80211_sta_active_ibss(dev);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+	printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
+	       dev->name, active_ibss);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+	spin_lock_bh(&local->sta_bss_lock);
+	list_for_each_entry(bss, &local->sta_bss_list, list) {
+		if (ifsta->ssid_len != bss->ssid_len ||
+		    memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
+		    || !(bss->capability & WLAN_CAPABILITY_IBSS))
+			continue;
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+		printk(KERN_DEBUG "   bssid=" MAC_FMT " found\n",
+		       MAC_ARG(bss->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+		memcpy(bssid, bss->bssid, ETH_ALEN);
+		found = 1;
+		if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
+			break;
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+	printk(KERN_DEBUG "   sta_find_ibss: selected " MAC_FMT " current "
+	       MAC_FMT "\n", MAC_ARG(bssid), MAC_ARG(ifsta->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+	if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
+	    (bss = ieee80211_rx_bss_get(dev, bssid))) {
+		printk(KERN_DEBUG "%s: Selected IBSS BSSID " MAC_FMT
+		       " based on configured SSID\n",
+		       dev->name, MAC_ARG(bssid));
+		return ieee80211_sta_join_ibss(dev, ifsta, bss);
+	}
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+	printk(KERN_DEBUG "   did not try to join ibss\n");
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+	/* Selected IBSS not found in current scan results - try to scan */
+	if (ifsta->state == IEEE80211_IBSS_JOINED &&
+	    !ieee80211_sta_active_ibss(dev)) {
+		mod_timer(&ifsta->timer, jiffies +
+				      IEEE80211_IBSS_MERGE_INTERVAL);
+	} else if (time_after(jiffies, local->last_scan_completed +
+			      IEEE80211_SCAN_INTERVAL)) {
+		printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
+		       "join\n", dev->name);
+		return ieee80211_sta_req_scan(dev, ifsta->ssid,
+					      ifsta->ssid_len);
+	} else if (ifsta->state != IEEE80211_IBSS_JOINED) {
+		int interval = IEEE80211_SCAN_INTERVAL;
+
+		if (time_after(jiffies, ifsta->ibss_join_req +
+			       IEEE80211_IBSS_JOIN_TIMEOUT)) {
+			if (ifsta->create_ibss &&
+			    local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
+				return ieee80211_sta_create_ibss(dev, ifsta);
+			if (ifsta->create_ibss) {
+				printk(KERN_DEBUG "%s: IBSS not allowed on the"
+				       " configured channel %d (%d MHz)\n",
+				       dev->name, local->hw.conf.channel,
+				       local->hw.conf.freq);
+			}
+
+			/* No IBSS found - decrease scan interval and continue
+			 * scanning. */
+			interval = IEEE80211_SCAN_INTERVAL_SLOW;
+		}
+
+		ifsta->state = IEEE80211_IBSS_SEARCH;
+		mod_timer(&ifsta->timer, jiffies + interval);
+		return 0;
+	}
+
+	return 0;
+}
+
+
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_sta *ifsta;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (len > IEEE80211_MAX_SSID_LEN)
+		return -EINVAL;
+
+	/* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
+	 * not defined. */
+	if (local->ops->conf_tx) {
+		struct ieee80211_tx_queue_params qparam;
+		int i;
+
+		memset(&qparam, 0, sizeof(qparam));
+		/* TODO: are these ok defaults for all hw_modes? */
+		qparam.aifs = 2;
+		qparam.cw_min =
+			local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
+		qparam.cw_max = 1023;
+		qparam.burst_time = 0;
+		for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
+		{
+			local->ops->conf_tx(local_to_hw(local),
+					   i + IEEE80211_TX_QUEUE_DATA0,
+					   &qparam);
+		}
+		/* IBSS uses different parameters for Beacon sending */
+		qparam.cw_min++;
+		qparam.cw_min *= 2;
+		qparam.cw_min--;
+		local->ops->conf_tx(local_to_hw(local),
+				   IEEE80211_TX_QUEUE_BEACON, &qparam);
+	}
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	ifsta = &sdata->u.sta;
+
+	if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
+		ifsta->prev_bssid_set = 0;
+	memcpy(ifsta->ssid, ssid, len);
+	memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
+	ifsta->ssid_len = len;
+
+	ifsta->ssid_set = len ? 1 : 0;
+	if (sdata->type == IEEE80211_IF_TYPE_IBSS && !ifsta->bssid_set) {
+		ifsta->ibss_join_req = jiffies;
+		ifsta->state = IEEE80211_IBSS_SEARCH;
+		return ieee80211_sta_find_ibss(dev, ifsta);
+	}
+	return 0;
+}
+
+
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
+	*len = ifsta->ssid_len;
+	return 0;
+}
+
+
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_sta *ifsta;
+	int res;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	ifsta = &sdata->u.sta;
+
+	if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+		memcpy(ifsta->bssid, bssid, ETH_ALEN);
+		res = ieee80211_if_config(dev);
+		if (res) {
+			printk(KERN_DEBUG "%s: Failed to config new BSSID to "
+			       "the low-level driver\n", dev->name);
+			return res;
+		}
+	}
+
+	if (!is_valid_ether_addr(bssid))
+		ifsta->bssid_set = 0;
+	else
+		ifsta->bssid_set = 1;
+	return 0;
+}
+
+
+static void ieee80211_send_nullfunc(struct ieee80211_local *local,
+				    struct ieee80211_sub_if_data *sdata,
+				    int powersave)
+{
+	struct sk_buff *skb;
+	struct ieee80211_hdr *nullfunc;
+	u16 fc;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
+		       "frame\n", sdata->dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+	memset(nullfunc, 0, 24);
+	fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+	     IEEE80211_FCTL_TODS;
+	if (powersave)
+		fc |= IEEE80211_FCTL_PM;
+	nullfunc->frame_control = cpu_to_le16(fc);
+	memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
+	memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
+	memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
+
+	ieee80211_sta_tx(sdata->dev, skb, 0);
+}
+
+
+void ieee80211_scan_completed(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct net_device *dev = local->scan_dev;
+	struct ieee80211_sub_if_data *sdata;
+	union iwreq_data wrqu;
+
+	local->last_scan_completed = jiffies;
+	wmb();
+	local->sta_scanning = 0;
+
+	if (ieee80211_hw_config(local))
+		printk(KERN_DEBUG "%s: failed to restore operational"
+		       "channel after scan\n", dev->name);
+
+	if (!(local->hw.flags & IEEE80211_HW_NO_PROBE_FILTERING) &&
+	    ieee80211_if_config(dev))
+		printk(KERN_DEBUG "%s: failed to restore operational"
+		       "BSSID after scan\n", dev->name);
+
+	memset(&wrqu, 0, sizeof(wrqu));
+	wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		if (sdata->type == IEEE80211_IF_TYPE_STA) {
+			if (sdata->u.sta.associated)
+				ieee80211_send_nullfunc(local, sdata, 0);
+			ieee80211_sta_timer((unsigned long)sdata);
+		}
+		netif_wake_queue(sdata->dev);
+	}
+	read_unlock(&local->sub_if_lock);
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
+		struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+		if (!ifsta->bssid_set ||
+		    (!ifsta->state == IEEE80211_IBSS_JOINED &&
+		    !ieee80211_sta_active_ibss(dev)))
+			ieee80211_sta_find_ibss(dev, ifsta);
+	}
+}
+EXPORT_SYMBOL(ieee80211_scan_completed);
+
+void ieee80211_sta_scan_work(struct work_struct *work)
+{
+	struct ieee80211_local *local =
+		container_of(work, struct ieee80211_local, scan_work.work);
+	struct net_device *dev = local->scan_dev;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_hw_mode *mode;
+	struct ieee80211_channel *chan;
+	int skip;
+	unsigned long next_delay = 0;
+
+	if (!local->sta_scanning)
+		return;
+
+	switch (local->scan_state) {
+	case SCAN_SET_CHANNEL:
+		mode = local->scan_hw_mode;
+		if (local->scan_hw_mode->list.next == &local->modes_list &&
+		    local->scan_channel_idx >= mode->num_channels) {
+			ieee80211_scan_completed(local_to_hw(local));
+			return;
+		}
+		skip = !(local->enabled_modes & (1 << mode->mode));
+		chan = &mode->channels[local->scan_channel_idx];
+		if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
+		    (sdata->type == IEEE80211_IF_TYPE_IBSS &&
+		     !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
+		    (local->hw_modes & local->enabled_modes &
+		     (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
+			skip = 1;
+
+		if (!skip) {
+#if 0
+			printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
+			       dev->name, chan->chan, chan->freq);
+#endif
+
+			local->scan_channel = chan;
+			if (ieee80211_hw_config(local)) {
+				printk(KERN_DEBUG "%s: failed to set channel "
+				       "%d (%d MHz) for scan\n", dev->name,
+				       chan->chan, chan->freq);
+				skip = 1;
+			}
+		}
+
+		local->scan_channel_idx++;
+		if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
+			if (local->scan_hw_mode->list.next != &local->modes_list) {
+				local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
+								 struct ieee80211_hw_mode,
+								 list);
+				local->scan_channel_idx = 0;
+			}
+		}
+
+		if (skip)
+			break;
+
+		next_delay = IEEE80211_PROBE_DELAY +
+			     usecs_to_jiffies(local->hw.channel_change_time);
+		local->scan_state = SCAN_SEND_PROBE;
+		break;
+	case SCAN_SEND_PROBE:
+		if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
+			ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+						 local->scan_ssid_len);
+			next_delay = IEEE80211_CHANNEL_TIME;
+		} else
+			next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+		local->scan_state = SCAN_SET_CHANNEL;
+		break;
+	}
+
+	if (local->sta_scanning)
+		queue_delayed_work(local->hw.workqueue, &local->scan_work,
+				   next_delay);
+}
+
+
+static int ieee80211_sta_start_scan(struct net_device *dev,
+				    u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+
+	if (ssid_len > IEEE80211_MAX_SSID_LEN)
+		return -EINVAL;
+
+	/* MLME-SCAN.request (page 118)  page 144 (11.1.3.1)
+	 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
+	 * BSSID: MACAddress
+	 * SSID
+	 * ScanType: ACTIVE, PASSIVE
+	 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
+	 *    a Probe frame during active scanning
+	 * ChannelList
+	 * MinChannelTime (>= ProbeDelay), in TU
+	 * MaxChannelTime: (>= MinChannelTime), in TU
+	 */
+
+	 /* MLME-SCAN.confirm
+	  * BSSDescriptionSet
+	  * ResultCode: SUCCESS, INVALID_PARAMETERS
+	 */
+
+	if (local->sta_scanning) {
+		if (local->scan_dev == dev)
+			return 0;
+		return -EBUSY;
+	}
+
+	if (local->ops->hw_scan) {
+		int rc = local->ops->hw_scan(local_to_hw(local),
+					    ssid, ssid_len);
+		if (!rc) {
+			local->sta_scanning = 1;
+			local->scan_dev = dev;
+		}
+		return rc;
+	}
+
+	local->sta_scanning = 1;
+
+	read_lock(&local->sub_if_lock);
+	list_for_each_entry(sdata, &local->sub_if_list, list) {
+		netif_stop_queue(sdata->dev);
+		if (sdata->type == IEEE80211_IF_TYPE_STA &&
+		    sdata->u.sta.associated)
+			ieee80211_send_nullfunc(local, sdata, 1);
+	}
+	read_unlock(&local->sub_if_lock);
+
+	if (ssid) {
+		local->scan_ssid_len = ssid_len;
+		memcpy(local->scan_ssid, ssid, ssid_len);
+	} else
+		local->scan_ssid_len = 0;
+	local->scan_state = SCAN_SET_CHANNEL;
+	local->scan_hw_mode = list_entry(local->modes_list.next,
+					 struct ieee80211_hw_mode,
+					 list);
+	local->scan_channel_idx = 0;
+	local->scan_dev = dev;
+
+	if (!(local->hw.flags & IEEE80211_HW_NO_PROBE_FILTERING) &&
+	    ieee80211_if_config(dev))
+		printk(KERN_DEBUG "%s: failed to set BSSID for scan\n",
+		       dev->name);
+
+	/* TODO: start scan as soon as all nullfunc frames are ACKed */
+	queue_delayed_work(local->hw.workqueue, &local->scan_work,
+			   IEEE80211_CHANNEL_TIME);
+
+	return 0;
+}
+
+
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+	if (sdata->type != IEEE80211_IF_TYPE_STA)
+		return ieee80211_sta_start_scan(dev, ssid, ssid_len);
+
+	if (local->sta_scanning) {
+		if (local->scan_dev == dev)
+			return 0;
+		return -EBUSY;
+	}
+
+	set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
+	queue_work(local->hw.workqueue, &ifsta->work);
+	return 0;
+}
+
+static char *
+ieee80211_sta_scan_result(struct net_device *dev,
+			  struct ieee80211_sta_bss *bss,
+			  char *current_ev, char *end_buf)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct iw_event iwe;
+
+	if (time_after(jiffies,
+		       bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
+		return current_ev;
+
+	if (!(local->enabled_modes & (1 << bss->hw_mode)))
+		return current_ev;
+
+	if (local->scan_flags & IEEE80211_SCAN_WPA_ONLY &&
+	    !bss->wpa_ie && !bss->rsn_ie)
+		return current_ev;
+
+	if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID &&
+	    (local->scan_ssid_len != bss->ssid_len ||
+	     memcmp(local->scan_ssid, bss->ssid, bss->ssid_len) != 0))
+		return current_ev;
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWAP;
+	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+	memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+					  IW_EV_ADDR_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWESSID;
+	iwe.u.data.length = bss->ssid_len;
+	iwe.u.data.flags = 1;
+	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+					  bss->ssid);
+
+	if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = SIOCGIWMODE;
+		if (bss->capability & WLAN_CAPABILITY_ESS)
+			iwe.u.mode = IW_MODE_MASTER;
+		else
+			iwe.u.mode = IW_MODE_ADHOC;
+		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+						  IW_EV_UINT_LEN);
+	}
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = bss->channel;
+	iwe.u.freq.e = 0;
+	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+	iwe.u.freq.m = bss->freq * 100000;
+	iwe.u.freq.e = 1;
+	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = IWEVQUAL;
+	iwe.u.qual.qual = bss->signal;
+	iwe.u.qual.level = bss->rssi;
+	iwe.u.qual.noise = bss->noise;
+	iwe.u.qual.updated = local->wstats_flags;
+	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+					  IW_EV_QUAL_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWENCODE;
+	if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+		iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+	else
+		iwe.u.data.flags = IW_ENCODE_DISABLED;
+	iwe.u.data.length = 0;
+	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
+
+	if (bss && bss->wpa_ie) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = bss->wpa_ie_len;
+		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+						  bss->wpa_ie);
+	}
+
+	if (bss && bss->rsn_ie) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = bss->rsn_ie_len;
+		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+						  bss->rsn_ie);
+	}
+
+	if (bss && bss->supp_rates_len > 0) {
+		/* display all supported rates in readable format */
+		char *p = current_ev + IW_EV_LCP_LEN;
+		int i;
+
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = SIOCGIWRATE;
+		/* Those two flags are ignored... */
+		iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+
+		for (i = 0; i < bss->supp_rates_len; i++) {
+			iwe.u.bitrate.value = ((bss->supp_rates[i] &
+							0x7f) * 500000);
+			p = iwe_stream_add_value(current_ev, p,
+					end_buf, &iwe, IW_EV_PARAM_LEN);
+		}
+		current_ev = p;
+	}
+
+	if (bss) {
+		char *buf;
+		buf = kmalloc(30, GFP_ATOMIC);
+		if (buf) {
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = IWEVCUSTOM;
+			sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(current_ev, end_buf,
+							  &iwe, buf);
+			kfree(buf);
+		}
+	}
+
+	do {
+		char *buf;
+
+		if (!(local->scan_flags & IEEE80211_SCAN_EXTRA_INFO))
+			break;
+
+		buf = kmalloc(100, GFP_ATOMIC);
+		if (!buf)
+			break;
+
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVCUSTOM;
+		sprintf(buf, "bcn_int=%d", bss->beacon_int);
+		iwe.u.data.length = strlen(buf);
+		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+						  buf);
+
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVCUSTOM;
+		sprintf(buf, "capab=0x%04x", bss->capability);
+		iwe.u.data.length = strlen(buf);
+		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+						  buf);
+
+		kfree(buf);
+		break;
+	} while (0);
+
+	return current_ev;
+}
+
+
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	char *current_ev = buf;
+	char *end_buf = buf + len;
+	struct ieee80211_sta_bss *bss;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	list_for_each_entry(bss, &local->sta_bss_list, list) {
+		if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
+			spin_unlock_bh(&local->sta_bss_lock);
+			return -E2BIG;
+		}
+		current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
+						       end_buf);
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+	return current_ev - buf;
+}
+
+
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	kfree(ifsta->extra_ie);
+	if (len == 0) {
+		ifsta->extra_ie = NULL;
+		ifsta->extra_ie_len = 0;
+		return 0;
+	}
+	ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
+	if (!ifsta->extra_ie) {
+		ifsta->extra_ie_len = 0;
+		return -ENOMEM;
+	}
+	memcpy(ifsta->extra_ie, ie, len);
+	ifsta->extra_ie_len = len;
+	return 0;
+}
+
+
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+					 struct sk_buff *skb, u8 *bssid,
+					 u8 *addr)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *sdata = NULL;
+
+	/* TODO: Could consider removing the least recently used entry and
+	 * allow new one to be added. */
+	if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: No room for a new IBSS STA "
+			       "entry " MAC_FMT "\n", dev->name, MAC_ARG(addr));
+		}
+		return NULL;
+	}
+
+	printk(KERN_DEBUG "%s: Adding new IBSS station " MAC_FMT " (dev=%s)\n",
+	       local->mdev->name, MAC_ARG(addr), dev->name);
+
+	sta = sta_info_add(local, dev, addr, GFP_ATOMIC);
+	if (!sta)
+		return NULL;
+
+	sta->supp_rates = sdata->u.sta.supp_rates_bits;
+
+	rate_control_rate_init(sta, local);
+
+	return sta; /* caller will call sta_info_put() */
+}
+
+
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+	printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
+	       dev->name, reason);
+
+	if (sdata->type != IEEE80211_IF_TYPE_STA &&
+	    sdata->type != IEEE80211_IF_TYPE_IBSS)
+		return -EINVAL;
+
+	ieee80211_send_deauth(dev, ifsta, reason);
+	ieee80211_set_disassoc(dev, ifsta, 1);
+	return 0;
+}
+
+
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+	printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
+	       dev->name, reason);
+
+	if (sdata->type != IEEE80211_IF_TYPE_STA)
+		return -EINVAL;
+
+	if (!ifsta->associated)
+		return -1;
+
+	ieee80211_send_disassoc(dev, ifsta, reason);
+	ieee80211_set_disassoc(dev, ifsta, 0);
+	return 0;
+}
diff --git a/net/mac80211/michael.c b/net/mac80211/michael.c
new file mode 100644
index 0000000..0f844f7
--- /dev/null
+++ b/net/mac80211/michael.c
@@ -0,0 +1,104 @@
+/*
+ * Michael MIC implementation - optimized for TKIP MIC operations
+ * Copyright 2002-2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+
+#include "michael.h"
+
+static inline u32 rotr(u32 val, int bits)
+{
+	return (val >> bits) | (val << (32 - bits));
+}
+
+
+static inline u32 rotl(u32 val, int bits)
+{
+	return (val << bits) | (val >> (32 - bits));
+}
+
+
+static inline u32 xswap(u32 val)
+{
+	return ((val & 0xff00ff00) >> 8) | ((val & 0x00ff00ff) << 8);
+}
+
+
+#define michael_block(l, r) \
+do { \
+	r ^= rotl(l, 17); \
+	l += r; \
+	r ^= xswap(l); \
+	l += r; \
+	r ^= rotl(l, 3); \
+	l += r; \
+	r ^= rotr(l, 2); \
+	l += r; \
+} while (0)
+
+
+static inline u32 michael_get32(u8 *data)
+{
+	return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
+}
+
+
+static inline void michael_put32(u32 val, u8 *data)
+{
+	data[0] = val & 0xff;
+	data[1] = (val >> 8) & 0xff;
+	data[2] = (val >> 16) & 0xff;
+	data[3] = (val >> 24) & 0xff;
+}
+
+
+void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority,
+		 u8 *data, size_t data_len, u8 *mic)
+{
+	u32 l, r, val;
+	size_t block, blocks, left;
+
+	l = michael_get32(key);
+	r = michael_get32(key + 4);
+
+	/* A pseudo header (DA, SA, Priority, 0, 0, 0) is used in Michael MIC
+	 * calculation, but it is _not_ transmitted */
+	l ^= michael_get32(da);
+	michael_block(l, r);
+	l ^= da[4] | (da[5] << 8) | (sa[0] << 16) | (sa[1] << 24);
+	michael_block(l, r);
+	l ^= michael_get32(&sa[2]);
+	michael_block(l, r);
+	l ^= priority;
+	michael_block(l, r);
+
+	/* Real data */
+	blocks = data_len / 4;
+	left = data_len % 4;
+
+	for (block = 0; block < blocks; block++) {
+		l ^= michael_get32(&data[block * 4]);
+		michael_block(l, r);
+	}
+
+	/* Partial block of 0..3 bytes and padding: 0x5a + 4..7 zeros to make
+	 * total length a multiple of 4. */
+	val = 0x5a;
+	while (left > 0) {
+		val <<= 8;
+		left--;
+		val |= data[blocks * 4 + left];
+	}
+	l ^= val;
+	michael_block(l, r);
+	/* last block is zero, so l ^ 0 = l */
+	michael_block(l, r);
+
+	michael_put32(l, mic);
+	michael_put32(r, mic + 4);
+}
diff --git a/net/mac80211/michael.h b/net/mac80211/michael.h
new file mode 100644
index 0000000..2e6aeba
--- /dev/null
+++ b/net/mac80211/michael.h
@@ -0,0 +1,20 @@
+/*
+ * Michael MIC implementation - optimized for TKIP MIC operations
+ * Copyright 2002-2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef MICHAEL_H
+#define MICHAEL_H
+
+#include <linux/types.h>
+
+#define MICHAEL_MIC_LEN 8
+
+void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority,
+		 u8 *data, size_t data_len, u8 *mic);
+
+#endif /* MICHAEL_H */
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
new file mode 100644
index 0000000..68bddae
--- /dev/null
+++ b/net/mac80211/rc80211_simple.c
@@ -0,0 +1,361 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/compiler.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+
+
+/* This is a minimal implementation of TX rate controlling that can be used
+ * as the default when no improved mechanisms are available. */
+
+
+#define RATE_CONTROL_EMERG_DEC 2
+#define RATE_CONTROL_INTERVAL (HZ / 20)
+#define RATE_CONTROL_MIN_TX 10
+
+MODULE_ALIAS("rc80211_default");
+
+static void rate_control_rate_inc(struct ieee80211_local *local,
+				  struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_hw_mode *mode;
+	int i = sta->txrate;
+	int maxrate;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+	if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
+		/* forced unicast rate - do not change STA rate */
+		return;
+	}
+
+	mode = local->oper_hw_mode;
+	maxrate = sdata->bss ? sdata->bss->max_ratectrl_rateidx : -1;
+
+	if (i > mode->num_rates)
+		i = mode->num_rates - 2;
+
+	while (i + 1 < mode->num_rates) {
+		i++;
+		if (sta->supp_rates & BIT(i) &&
+		    mode->rates[i].flags & IEEE80211_RATE_SUPPORTED &&
+		    (maxrate < 0 || i <= maxrate)) {
+			sta->txrate = i;
+			break;
+		}
+	}
+}
+
+
+static void rate_control_rate_dec(struct ieee80211_local *local,
+				  struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_hw_mode *mode;
+	int i = sta->txrate;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+	if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
+		/* forced unicast rate - do not change STA rate */
+		return;
+	}
+
+	mode = local->oper_hw_mode;
+	if (i > mode->num_rates)
+		i = mode->num_rates;
+
+	while (i > 0) {
+		i--;
+		if (sta->supp_rates & BIT(i) &&
+		    mode->rates[i].flags & IEEE80211_RATE_SUPPORTED) {
+			sta->txrate = i;
+			break;
+		}
+	}
+}
+
+
+static struct ieee80211_rate *
+rate_control_lowest_rate(struct ieee80211_local *local,
+			 struct ieee80211_hw_mode *mode)
+{
+	int i;
+
+	for (i = 0; i < mode->num_rates; i++) {
+		struct ieee80211_rate *rate = &mode->rates[i];
+
+		if (rate->flags & IEEE80211_RATE_SUPPORTED)
+			return rate;
+	}
+
+	printk(KERN_DEBUG "rate_control_lowest_rate - no supported rates "
+	       "found\n");
+	return &mode->rates[0];
+}
+
+
+struct global_rate_control {
+	int dummy;
+};
+
+struct sta_rate_control {
+	unsigned long last_rate_change;
+	u32 tx_num_failures;
+	u32 tx_num_xmit;
+
+	unsigned long avg_rate_update;
+	u32 tx_avg_rate_sum;
+	u32 tx_avg_rate_num;
+};
+
+
+static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
+					  struct sk_buff *skb,
+					  struct ieee80211_tx_status *status)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct sta_info *sta;
+	struct sta_rate_control *srctrl;
+
+	sta = sta_info_get(local, hdr->addr1);
+
+	if (!sta)
+	    return;
+
+	srctrl = sta->rate_ctrl_priv;
+	srctrl->tx_num_xmit++;
+	if (status->excessive_retries) {
+		sta->antenna_sel_tx = sta->antenna_sel_tx == 1 ? 2 : 1;
+		sta->antenna_sel_rx = sta->antenna_sel_rx == 1 ? 2 : 1;
+		if (local->sta_antenna_sel == STA_ANTENNA_SEL_SW_CTRL_DEBUG) {
+			printk(KERN_DEBUG "%s: " MAC_FMT " TX antenna --> %d "
+			       "RX antenna --> %d (@%lu)\n",
+			       dev->name, MAC_ARG(hdr->addr1),
+			       sta->antenna_sel_tx, sta->antenna_sel_rx, jiffies);
+		}
+		srctrl->tx_num_failures++;
+		sta->tx_retry_failed++;
+		sta->tx_num_consecutive_failures++;
+		sta->tx_num_mpdu_fail++;
+	} else {
+		sta->last_ack_rssi[0] = sta->last_ack_rssi[1];
+		sta->last_ack_rssi[1] = sta->last_ack_rssi[2];
+		sta->last_ack_rssi[2] = status->ack_signal;
+		sta->tx_num_consecutive_failures = 0;
+		sta->tx_num_mpdu_ok++;
+	}
+	sta->tx_retry_count += status->retry_count;
+	sta->tx_num_mpdu_fail += status->retry_count;
+
+	if (time_after(jiffies,
+		       srctrl->last_rate_change + RATE_CONTROL_INTERVAL) &&
+		srctrl->tx_num_xmit > RATE_CONTROL_MIN_TX) {
+		u32 per_failed;
+		srctrl->last_rate_change = jiffies;
+
+		per_failed = (100 * sta->tx_num_mpdu_fail) /
+			(sta->tx_num_mpdu_fail + sta->tx_num_mpdu_ok);
+		/* TODO: calculate average per_failed to make adjusting
+		 * parameters easier */
+#if 0
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "MPDU fail=%d ok=%d per_failed=%d\n",
+			       sta->tx_num_mpdu_fail, sta->tx_num_mpdu_ok,
+			       per_failed);
+		}
+#endif
+
+		if (per_failed > local->rate_ctrl_num_down) {
+			rate_control_rate_dec(local, sta);
+		} else if (per_failed < local->rate_ctrl_num_up) {
+			rate_control_rate_inc(local, sta);
+		}
+		srctrl->tx_avg_rate_sum += status->control.rate->rate;
+		srctrl->tx_avg_rate_num++;
+		srctrl->tx_num_failures = 0;
+		srctrl->tx_num_xmit = 0;
+	} else if (sta->tx_num_consecutive_failures >=
+		   RATE_CONTROL_EMERG_DEC) {
+		rate_control_rate_dec(local, sta);
+	}
+
+	if (srctrl->avg_rate_update + 60 * HZ < jiffies) {
+		srctrl->avg_rate_update = jiffies;
+		if (srctrl->tx_avg_rate_num > 0) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+			printk(KERN_DEBUG "%s: STA " MAC_FMT " Average rate: "
+			       "%d (%d/%d)\n",
+			       dev->name, MAC_ARG(sta->addr),
+			       srctrl->tx_avg_rate_sum /
+			       srctrl->tx_avg_rate_num,
+			       srctrl->tx_avg_rate_sum,
+			       srctrl->tx_avg_rate_num);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+			srctrl->tx_avg_rate_sum = 0;
+			srctrl->tx_avg_rate_num = 0;
+		}
+	}
+
+	sta_info_put(sta);
+}
+
+
+static struct ieee80211_rate *
+rate_control_simple_get_rate(void *priv, struct net_device *dev,
+			     struct sk_buff *skb,
+			     struct rate_control_extra *extra)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_hw_mode *mode = extra->mode;
+	struct sta_info *sta;
+	int rateidx, nonerp_idx;
+	u16 fc;
+
+	memset(extra, 0, sizeof(*extra));
+
+	fc = le16_to_cpu(hdr->frame_control);
+	if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+	    (hdr->addr1[0] & 0x01)) {
+		/* Send management frames and broadcast/multicast data using
+		 * lowest rate. */
+		/* TODO: this could probably be improved.. */
+		return rate_control_lowest_rate(local, mode);
+	}
+
+	sta = sta_info_get(local, hdr->addr1);
+
+	if (!sta)
+		return rate_control_lowest_rate(local, mode);
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
+		sta->txrate = sdata->bss->force_unicast_rateidx;
+
+	rateidx = sta->txrate;
+
+	if (rateidx >= mode->num_rates)
+		rateidx = mode->num_rates - 1;
+
+	sta->last_txrate = rateidx;
+	nonerp_idx = rateidx;
+	while (nonerp_idx > 0 &&
+	       ((mode->rates[nonerp_idx].flags & IEEE80211_RATE_ERP) ||
+		!(mode->rates[nonerp_idx].flags & IEEE80211_RATE_SUPPORTED) ||
+		!(sta->supp_rates & BIT(nonerp_idx))))
+		nonerp_idx--;
+	extra->nonerp = &mode->rates[nonerp_idx];
+
+	sta_info_put(sta);
+
+	return &mode->rates[rateidx];
+}
+
+
+static void rate_control_simple_rate_init(void *priv, void *priv_sta,
+					  struct ieee80211_local *local,
+					  struct sta_info *sta)
+{
+	struct ieee80211_hw_mode *mode;
+	int i;
+	sta->txrate = 0;
+	mode = local->oper_hw_mode;
+	/* TODO: what is a good starting rate for STA? About middle? Maybe not
+	 * the lowest or the highest rate.. Could consider using RSSI from
+	 * previous packets? Need to have IEEE 802.1X auth succeed immediately
+	 * after assoc.. */
+	for (i = 0; i < mode->num_rates; i++) {
+		if ((sta->supp_rates & BIT(i)) &&
+		    (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED))
+			sta->txrate = i;
+	}
+}
+
+
+static void * rate_control_simple_alloc(struct ieee80211_local *local)
+{
+	struct global_rate_control *rctrl;
+
+	rctrl = kzalloc(sizeof(*rctrl), GFP_ATOMIC);
+
+	return rctrl;
+}
+
+
+static void rate_control_simple_free(void *priv)
+{
+	struct global_rate_control *rctrl = priv;
+	kfree(rctrl);
+}
+
+
+static void rate_control_simple_clear(void *priv)
+{
+}
+
+
+static void * rate_control_simple_alloc_sta(void *priv, gfp_t gfp)
+{
+	struct sta_rate_control *rctrl;
+
+	rctrl = kzalloc(sizeof(*rctrl), gfp);
+
+	return rctrl;
+}
+
+
+static void rate_control_simple_free_sta(void *priv, void *priv_sta)
+{
+	struct sta_rate_control *rctrl = priv_sta;
+	kfree(rctrl);
+}
+
+
+static struct rate_control_ops rate_control_simple = {
+	.module = THIS_MODULE,
+	.name = "simple",
+	.tx_status = rate_control_simple_tx_status,
+	.get_rate = rate_control_simple_get_rate,
+	.rate_init = rate_control_simple_rate_init,
+	.clear = rate_control_simple_clear,
+	.alloc = rate_control_simple_alloc,
+	.free = rate_control_simple_free,
+	.alloc_sta = rate_control_simple_alloc_sta,
+	.free_sta = rate_control_simple_free_sta,
+};
+
+
+static int __init rate_control_simple_init(void)
+{
+	return ieee80211_rate_control_register(&rate_control_simple);
+}
+
+
+static void __exit rate_control_simple_exit(void)
+{
+	ieee80211_rate_control_unregister(&rate_control_simple);
+}
+
+
+module_init(rate_control_simple_init);
+module_exit(rate_control_simple_exit);
+
+MODULE_DESCRIPTION("Simple rate control algorithm for ieee80211");
+MODULE_LICENSE("GPL");
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
new file mode 100644
index 0000000..cddaf57
--- /dev/null
+++ b/net/mac80211/sta_info.c
@@ -0,0 +1,386 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "sta_info.h"
+
+/* Caller must hold local->sta_lock */
+static void sta_info_hash_add(struct ieee80211_local *local,
+			      struct sta_info *sta)
+{
+	sta->hnext = local->sta_hash[STA_HASH(sta->addr)];
+	local->sta_hash[STA_HASH(sta->addr)] = sta;
+}
+
+
+/* Caller must hold local->sta_lock */
+static void sta_info_hash_del(struct ieee80211_local *local,
+			      struct sta_info *sta)
+{
+	struct sta_info *s;
+
+	s = local->sta_hash[STA_HASH(sta->addr)];
+	if (!s)
+		return;
+	if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
+		local->sta_hash[STA_HASH(sta->addr)] = s->hnext;
+		return;
+	}
+
+	while (s->hnext && memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
+		s = s->hnext;
+	if (s->hnext)
+		s->hnext = s->hnext->hnext;
+	else
+		printk(KERN_ERR "%s: could not remove STA " MAC_FMT " from "
+		       "hash table\n", local->mdev->name, MAC_ARG(sta->addr));
+}
+
+static inline void __sta_info_get(struct sta_info *sta)
+{
+	kref_get(&sta->kref);
+}
+
+struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
+{
+	struct sta_info *sta;
+
+	spin_lock_bh(&local->sta_lock);
+	sta = local->sta_hash[STA_HASH(addr)];
+	while (sta) {
+		if (memcmp(sta->addr, addr, ETH_ALEN) == 0) {
+			__sta_info_get(sta);
+			break;
+		}
+		sta = sta->hnext;
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	return sta;
+}
+EXPORT_SYMBOL(sta_info_get);
+
+int sta_info_min_txrate_get(struct ieee80211_local *local)
+{
+	struct sta_info *sta;
+	struct ieee80211_hw_mode *mode;
+	int min_txrate = 9999999;
+	int i;
+
+	spin_lock_bh(&local->sta_lock);
+	mode = local->oper_hw_mode;
+	for (i = 0; i < STA_HASH_SIZE; i++) {
+		sta = local->sta_hash[i];
+		while (sta) {
+			if (sta->txrate < min_txrate)
+				min_txrate = sta->txrate;
+			sta = sta->hnext;
+		}
+	}
+	spin_unlock_bh(&local->sta_lock);
+	if (min_txrate == 9999999)
+		min_txrate = 0;
+
+	return mode->rates[min_txrate].rate;
+}
+
+
+static void sta_info_release(struct kref *kref)
+{
+	struct sta_info *sta = container_of(kref, struct sta_info, kref);
+	struct ieee80211_local *local = sta->local;
+	struct sk_buff *skb;
+
+	/* free sta structure; it has already been removed from
+	 * hash table etc. external structures. Make sure that all
+	 * buffered frames are release (one might have been added
+	 * after sta_info_free() was called). */
+	while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+		local->total_ps_buffered--;
+		dev_kfree_skb_any(skb);
+	}
+	while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+		dev_kfree_skb_any(skb);
+	}
+	rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv);
+	rate_control_put(sta->rate_ctrl);
+	kfree(sta);
+}
+
+
+void sta_info_put(struct sta_info *sta)
+{
+	kref_put(&sta->kref, sta_info_release);
+}
+EXPORT_SYMBOL(sta_info_put);
+
+
+struct sta_info * sta_info_add(struct ieee80211_local *local,
+			       struct net_device *dev, u8 *addr, gfp_t gfp)
+{
+	struct sta_info *sta;
+
+	sta = kzalloc(sizeof(*sta), gfp);
+	if (!sta)
+		return NULL;
+
+	kref_init(&sta->kref);
+
+	sta->rate_ctrl = rate_control_get(local->rate_ctrl);
+	sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, gfp);
+	if (!sta->rate_ctrl_priv) {
+		rate_control_put(sta->rate_ctrl);
+		kref_put(&sta->kref, sta_info_release);
+		kfree(sta);
+		return NULL;
+	}
+
+	memcpy(sta->addr, addr, ETH_ALEN);
+	sta->local = local;
+	sta->dev = dev;
+	skb_queue_head_init(&sta->ps_tx_buf);
+	skb_queue_head_init(&sta->tx_filtered);
+	__sta_info_get(sta);	/* sta used by caller, decremented by
+				 * sta_info_put() */
+	spin_lock_bh(&local->sta_lock);
+	list_add(&sta->list, &local->sta_list);
+	local->num_sta++;
+	sta_info_hash_add(local, sta);
+	spin_unlock_bh(&local->sta_lock);
+	if (local->ops->sta_table_notification)
+		local->ops->sta_table_notification(local_to_hw(local),
+						  local->num_sta);
+	sta->key_idx_compression = HW_KEY_IDX_INVALID;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	printk(KERN_DEBUG "%s: Added STA " MAC_FMT "\n",
+	       local->mdev->name, MAC_ARG(addr));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+	return sta;
+}
+
+static void sta_info_remove(struct sta_info *sta)
+{
+	struct ieee80211_local *local = sta->local;
+	struct ieee80211_sub_if_data *sdata;
+
+	sta_info_hash_del(local, sta);
+	list_del(&sta->list);
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+	if (sta->flags & WLAN_STA_PS) {
+		sta->flags &= ~WLAN_STA_PS;
+		if (sdata->bss)
+			atomic_dec(&sdata->bss->num_sta_ps);
+	}
+	local->num_sta--;
+	sta_info_remove_aid_ptr(sta);
+}
+
+void sta_info_free(struct sta_info *sta, int locked)
+{
+	struct sk_buff *skb;
+	struct ieee80211_local *local = sta->local;
+
+	if (!locked) {
+		spin_lock_bh(&local->sta_lock);
+		sta_info_remove(sta);
+		spin_unlock_bh(&local->sta_lock);
+	} else {
+		sta_info_remove(sta);
+	}
+	if (local->ops->sta_table_notification)
+		local->ops->sta_table_notification(local_to_hw(local),
+						  local->num_sta);
+
+	while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+		local->total_ps_buffered--;
+		dev_kfree_skb_any(skb);
+	}
+	while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+		dev_kfree_skb_any(skb);
+	}
+
+	if (sta->key) {
+		if (local->ops->set_key) {
+			struct ieee80211_key_conf *key;
+			key = ieee80211_key_data2conf(local, sta->key);
+			if (key) {
+				local->ops->set_key(local_to_hw(local),
+						   DISABLE_KEY,
+						   sta->addr, key, sta->aid);
+				kfree(key);
+			}
+		}
+	} else if (sta->key_idx_compression != HW_KEY_IDX_INVALID) {
+		struct ieee80211_key_conf conf;
+		memset(&conf, 0, sizeof(conf));
+		conf.hw_key_idx = sta->key_idx_compression;
+		conf.alg = ALG_NULL;
+		conf.flags |= IEEE80211_KEY_FORCE_SW_ENCRYPT;
+		local->ops->set_key(local_to_hw(local), DISABLE_KEY,
+				   sta->addr, &conf, sta->aid);
+		sta->key_idx_compression = HW_KEY_IDX_INVALID;
+	}
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+	printk(KERN_DEBUG "%s: Removed STA " MAC_FMT "\n",
+	       local->mdev->name, MAC_ARG(sta->addr));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+	if (sta->key) {
+		ieee80211_key_free(sta->key);
+		sta->key = NULL;
+	}
+
+	sta_info_put(sta);
+}
+
+
+static inline int sta_info_buffer_expired(struct ieee80211_local *local,
+					  struct sta_info *sta,
+					  struct sk_buff *skb)
+{
+	struct ieee80211_tx_packet_data *pkt_data;
+	int timeout;
+
+	if (!skb)
+		return 0;
+
+	pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+
+	/* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
+	timeout = (sta->listen_interval * local->hw.conf.beacon_int * 32 /
+		   15625) * HZ;
+	if (timeout < STA_TX_BUFFER_EXPIRE)
+		timeout = STA_TX_BUFFER_EXPIRE;
+	return time_after(jiffies, pkt_data->jiffies + timeout);
+}
+
+
+static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
+					     struct sta_info *sta)
+{
+	unsigned long flags;
+	struct sk_buff *skb;
+
+	if (skb_queue_empty(&sta->ps_tx_buf))
+		return;
+
+	for (;;) {
+		spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
+		skb = skb_peek(&sta->ps_tx_buf);
+		if (sta_info_buffer_expired(local, sta, skb)) {
+			skb = __skb_dequeue(&sta->ps_tx_buf);
+			if (skb_queue_empty(&sta->ps_tx_buf))
+				sta->flags &= ~WLAN_STA_TIM;
+		} else
+			skb = NULL;
+		spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags);
+
+		if (skb) {
+			local->total_ps_buffered--;
+			printk(KERN_DEBUG "Buffered frame expired (STA "
+			       MAC_FMT ")\n", MAC_ARG(sta->addr));
+			dev_kfree_skb(skb);
+		} else
+			break;
+	}
+}
+
+
+static void sta_info_cleanup(unsigned long data)
+{
+	struct ieee80211_local *local = (struct ieee80211_local *) data;
+	struct sta_info *sta;
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		__sta_info_get(sta);
+		sta_info_cleanup_expire_buffered(local, sta);
+		sta_info_put(sta);
+	}
+	spin_unlock_bh(&local->sta_lock);
+
+	local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+	add_timer(&local->sta_cleanup);
+}
+
+void sta_info_init(struct ieee80211_local *local)
+{
+	spin_lock_init(&local->sta_lock);
+	INIT_LIST_HEAD(&local->sta_list);
+	INIT_LIST_HEAD(&local->deleted_sta_list);
+
+	init_timer(&local->sta_cleanup);
+	local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+	local->sta_cleanup.data = (unsigned long) local;
+	local->sta_cleanup.function = sta_info_cleanup;
+}
+
+int sta_info_start(struct ieee80211_local *local)
+{
+	add_timer(&local->sta_cleanup);
+	return 0;
+}
+
+void sta_info_stop(struct ieee80211_local *local)
+{
+	struct sta_info *sta, *tmp;
+
+	del_timer(&local->sta_cleanup);
+
+	list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
+		/*  We don't need locking at this point. */
+		sta_info_free(sta, 0);
+	}
+}
+
+void sta_info_remove_aid_ptr(struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	if (sta->aid <= 0)
+		return;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+	if (sdata->local->ops->set_tim)
+		sdata->local->ops->set_tim(local_to_hw(sdata->local),
+					  sta->aid, 0);
+	if (sdata->bss)
+		__bss_tim_clear(sdata->bss, sta->aid);
+}
+
+
+/**
+ * sta_info_flush - flush matching STA entries from the STA table
+ * @local: local interface data
+ * @dev: matching rule for the net device (sta->dev) or %NULL to match all STAs
+ */
+void sta_info_flush(struct ieee80211_local *local, struct net_device *dev)
+{
+	struct sta_info *sta, *tmp;
+
+	spin_lock_bh(&local->sta_lock);
+	list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
+		if (!dev || dev == sta->dev)
+			sta_info_free(sta, 1);
+	spin_unlock_bh(&local->sta_lock);
+}
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
new file mode 100644
index 0000000..f26e1c2
--- /dev/null
+++ b/net/mac80211/sta_info.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2002-2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef STA_INFO_H
+#define STA_INFO_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/kref.h>
+#include "ieee80211_key.h"
+
+/* Stations flags (struct sta_info::flags) */
+#define WLAN_STA_AUTH BIT(0)
+#define WLAN_STA_ASSOC BIT(1)
+#define WLAN_STA_PS BIT(2)
+#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
+#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
+#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
+				    * controlling whether STA is authorized to
+				    * send and receive non-IEEE 802.1X frames
+				    */
+#define WLAN_STA_SHORT_PREAMBLE BIT(7)
+#define WLAN_STA_WME BIT(9)
+#define WLAN_STA_WDS BIT(27)
+
+
+struct sta_info {
+	struct kref kref;
+	struct list_head list;
+	struct sta_info *hnext; /* next entry in hash table list */
+
+	struct ieee80211_local *local;
+
+	u8 addr[ETH_ALEN];
+	u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
+	u32 flags; /* WLAN_STA_ */
+
+	struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
+					* power saving state */
+	int pspoll; /* whether STA has send a PS Poll frame */
+	struct sk_buff_head tx_filtered; /* buffer of TX frames that were
+					  * already given to low-level driver,
+					  * but were filtered */
+	int clear_dst_mask;
+
+	unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
+	unsigned long rx_bytes, tx_bytes;
+	unsigned long tx_retry_failed, tx_retry_count;
+	unsigned long tx_filtered_count;
+
+	unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
+
+	unsigned long last_rx;
+	u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
+	int txrate; /* index in local->curr_rates */
+	int last_txrate; /* last rate used to send a frame to this STA */
+	int last_nonerp_idx;
+
+	struct net_device *dev; /* which net device is this station associated
+				 * to */
+
+	struct ieee80211_key *key;
+
+	u32 tx_num_consecutive_failures;
+	u32 tx_num_mpdu_ok;
+	u32 tx_num_mpdu_fail;
+
+	struct rate_control_ref *rate_ctrl;
+	void *rate_ctrl_priv;
+
+	/* last received seq/frag number from this STA (per RX queue) */
+	__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
+	unsigned long num_duplicates; /* number of duplicate frames received
+				       * from this STA */
+	unsigned long tx_fragments; /* number of transmitted MPDUs */
+	unsigned long rx_fragments; /* number of received MPDUs */
+	unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
+
+	int last_rssi; /* RSSI of last received frame from this STA */
+	int last_signal; /* signal of last received frame from this STA */
+	int last_noise; /* noise of last received frame from this STA */
+	int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
+	unsigned long last_ack;
+	int channel_use;
+	int channel_use_raw;
+
+	u8 antenna_sel_tx;
+	u8 antenna_sel_rx;
+
+
+	int key_idx_compression; /* key table index for compression and TX
+				  * filtering; used only if sta->key is not
+				  * set */
+
+	int assoc_ap; /* whether this is an AP that we are
+		       * associated with as a client */
+
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+
+	int vlan_id;
+
+	u16 listen_interval;
+};
+
+
+/* Maximum number of concurrently registered stations */
+#define MAX_STA_COUNT 2007
+
+#define STA_HASH_SIZE 256
+#define STA_HASH(sta) (sta[5])
+
+
+/* Maximum number of frames to buffer per power saving station */
+#define STA_MAX_TX_BUFFER 128
+
+/* Minimum buffered frame expiry time. If STA uses listen interval that is
+ * smaller than this value, the minimum value here is used instead. */
+#define STA_TX_BUFFER_EXPIRE (10 * HZ)
+
+/* How often station data is cleaned up (e.g., expiration of buffered frames)
+ */
+#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
+
+struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
+int sta_info_min_txrate_get(struct ieee80211_local *local);
+void sta_info_put(struct sta_info *sta);
+struct sta_info * sta_info_add(struct ieee80211_local *local,
+			       struct net_device *dev, u8 *addr, gfp_t gfp);
+void sta_info_free(struct sta_info *sta, int locked);
+void sta_info_init(struct ieee80211_local *local);
+int sta_info_start(struct ieee80211_local *local);
+void sta_info_stop(struct ieee80211_local *local);
+void sta_info_remove_aid_ptr(struct sta_info *sta);
+void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
+
+#endif /* STA_INFO_H */
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
new file mode 100644
index 0000000..4162172
--- /dev/null
+++ b/net/mac80211/tkip.c
@@ -0,0 +1,341 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/netdevice.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_key.h"
+#include "tkip.h"
+#include "wep.h"
+
+
+/* TKIP key mixing functions */
+
+
+#define PHASE1_LOOP_COUNT 8
+
+
+/* 2-byte by 2-byte subset of the full AES S-box table; second part of this
+ * table is identical to first part but byte-swapped */
+static const u16 tkip_sbox[256] =
+{
+	0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
+	0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
+	0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
+	0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
+	0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
+	0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
+	0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
+	0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
+	0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
+	0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
+	0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
+	0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
+	0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
+	0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
+	0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
+	0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
+	0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
+	0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
+	0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
+	0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
+	0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
+	0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
+	0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
+	0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
+	0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
+	0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
+	0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
+	0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
+	0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
+	0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
+	0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
+	0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
+};
+
+
+static inline u16 Mk16(u8 x, u8 y)
+{
+	return ((u16) x << 8) | (u16) y;
+}
+
+
+static inline u8 Hi8(u16 v)
+{
+	return v >> 8;
+}
+
+
+static inline u8 Lo8(u16 v)
+{
+	return v & 0xff;
+}
+
+
+static inline u16 Hi16(u32 v)
+{
+	return v >> 16;
+}
+
+
+static inline u16 Lo16(u32 v)
+{
+	return v & 0xffff;
+}
+
+
+static inline u16 RotR1(u16 v)
+{
+	return (v >> 1) | ((v & 0x0001) << 15);
+}
+
+
+static inline u16 tkip_S(u16 val)
+{
+	u16 a = tkip_sbox[Hi8(val)];
+
+	return tkip_sbox[Lo8(val)] ^ Hi8(a) ^ (Lo8(a) << 8);
+}
+
+
+
+/* P1K := Phase1(TA, TK, TSC)
+ * TA = transmitter address (48 bits)
+ * TK = dot11DefaultKeyValue or dot11KeyMappingValue (128 bits)
+ * TSC = TKIP sequence counter (48 bits, only 32 msb bits used)
+ * P1K: 80 bits
+ */
+static void tkip_mixing_phase1(const u8 *ta, const u8 *tk, u32 tsc_IV32,
+			       u16 *p1k)
+{
+	int i, j;
+
+	p1k[0] = Lo16(tsc_IV32);
+	p1k[1] = Hi16(tsc_IV32);
+	p1k[2] = Mk16(ta[1], ta[0]);
+	p1k[3] = Mk16(ta[3], ta[2]);
+	p1k[4] = Mk16(ta[5], ta[4]);
+
+	for (i = 0; i < PHASE1_LOOP_COUNT; i++) {
+		j = 2 * (i & 1);
+		p1k[0] += tkip_S(p1k[4] ^ Mk16(tk[ 1 + j], tk[ 0 + j]));
+		p1k[1] += tkip_S(p1k[0] ^ Mk16(tk[ 5 + j], tk[ 4 + j]));
+		p1k[2] += tkip_S(p1k[1] ^ Mk16(tk[ 9 + j], tk[ 8 + j]));
+		p1k[3] += tkip_S(p1k[2] ^ Mk16(tk[13 + j], tk[12 + j]));
+		p1k[4] += tkip_S(p1k[3] ^ Mk16(tk[ 1 + j], tk[ 0 + j])) + i;
+	}
+}
+
+
+static void tkip_mixing_phase2(const u16 *p1k, const u8 *tk, u16 tsc_IV16,
+			       u8 *rc4key)
+{
+	u16 ppk[6];
+	int i;
+
+	ppk[0] = p1k[0];
+	ppk[1] = p1k[1];
+	ppk[2] = p1k[2];
+	ppk[3] = p1k[3];
+	ppk[4] = p1k[4];
+	ppk[5] = p1k[4] + tsc_IV16;
+
+	ppk[0] += tkip_S(ppk[5] ^ Mk16(tk[ 1], tk[ 0]));
+	ppk[1] += tkip_S(ppk[0] ^ Mk16(tk[ 3], tk[ 2]));
+	ppk[2] += tkip_S(ppk[1] ^ Mk16(tk[ 5], tk[ 4]));
+	ppk[3] += tkip_S(ppk[2] ^ Mk16(tk[ 7], tk[ 6]));
+	ppk[4] += tkip_S(ppk[3] ^ Mk16(tk[ 9], tk[ 8]));
+	ppk[5] += tkip_S(ppk[4] ^ Mk16(tk[11], tk[10]));
+	ppk[0] +=  RotR1(ppk[5] ^ Mk16(tk[13], tk[12]));
+	ppk[1] +=  RotR1(ppk[0] ^ Mk16(tk[15], tk[14]));
+	ppk[2] +=  RotR1(ppk[1]);
+	ppk[3] +=  RotR1(ppk[2]);
+	ppk[4] +=  RotR1(ppk[3]);
+	ppk[5] +=  RotR1(ppk[4]);
+
+	rc4key[0] = Hi8(tsc_IV16);
+	rc4key[1] = (Hi8(tsc_IV16) | 0x20) & 0x7f;
+	rc4key[2] = Lo8(tsc_IV16);
+	rc4key[3] = Lo8((ppk[5] ^ Mk16(tk[1], tk[0])) >> 1);
+
+	for (i = 0; i < 6; i++) {
+		rc4key[4 + 2 * i] = Lo8(ppk[i]);
+		rc4key[5 + 2 * i] = Hi8(ppk[i]);
+	}
+}
+
+
+/* Add TKIP IV and Ext. IV at @pos. @iv0, @iv1, and @iv2 are the first octets
+ * of the IV. Returns pointer to the octet following IVs (i.e., beginning of
+ * the packet payload). */
+u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
+			   u8 iv0, u8 iv1, u8 iv2)
+{
+	*pos++ = iv0;
+	*pos++ = iv1;
+	*pos++ = iv2;
+	*pos++ = (key->keyidx << 6) | (1 << 5) /* Ext IV */;
+	*pos++ = key->u.tkip.iv32 & 0xff;
+	*pos++ = (key->u.tkip.iv32 >> 8) & 0xff;
+	*pos++ = (key->u.tkip.iv32 >> 16) & 0xff;
+	*pos++ = (key->u.tkip.iv32 >> 24) & 0xff;
+	return pos;
+}
+
+
+void ieee80211_tkip_gen_phase1key(struct ieee80211_key *key, u8 *ta,
+				  u16 *phase1key)
+{
+	tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+			   key->u.tkip.iv32, phase1key);
+}
+
+void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
+			       u8 *rc4key)
+{
+	/* Calculate per-packet key */
+	if (key->u.tkip.iv16 == 0 || !key->u.tkip.tx_initialized) {
+		/* IV16 wrapped around - perform TKIP phase 1 */
+		tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+				   key->u.tkip.iv32, key->u.tkip.p1k);
+		key->u.tkip.tx_initialized = 1;
+	}
+
+	tkip_mixing_phase2(key->u.tkip.p1k, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+			   key->u.tkip.iv16, rc4key);
+}
+
+/* Encrypt packet payload with TKIP using @key. @pos is a pointer to the
+ * beginning of the buffer containing payload. This payload must include
+ * headroom of eight octets for IV and Ext. IV and taildroom of four octets
+ * for ICV. @payload_len is the length of payload (_not_ including extra
+ * headroom and tailroom). @ta is the transmitter addresses. */
+void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm,
+				 struct ieee80211_key *key,
+				 u8 *pos, size_t payload_len, u8 *ta)
+{
+	u8 rc4key[16];
+
+	ieee80211_tkip_gen_rc4key(key, ta, rc4key);
+	pos = ieee80211_tkip_add_iv(pos, key, rc4key[0], rc4key[1], rc4key[2]);
+	ieee80211_wep_encrypt_data(tfm, rc4key, 16, pos, payload_len);
+}
+
+
+/* Decrypt packet payload with TKIP using @key. @pos is a pointer to the
+ * beginning of the buffer containing IEEE 802.11 header payload, i.e.,
+ * including IV, Ext. IV, real data, Michael MIC, ICV. @payload_len is the
+ * length of payload, including IV, Ext. IV, MIC, ICV.  */
+int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
+				struct ieee80211_key *key,
+				u8 *payload, size_t payload_len, u8 *ta,
+				int only_iv, int queue)
+{
+	u32 iv32;
+	u32 iv16;
+	u8 rc4key[16], keyid, *pos = payload;
+	int res;
+
+	if (payload_len < 12)
+		return -1;
+
+	iv16 = (pos[0] << 8) | pos[2];
+	keyid = pos[3];
+	iv32 = pos[4] | (pos[5] << 8) | (pos[6] << 16) | (pos[7] << 24);
+	pos += 8;
+#ifdef CONFIG_TKIP_DEBUG
+	{
+		int i;
+		printk(KERN_DEBUG "TKIP decrypt: data(len=%zd)", payload_len);
+		for (i = 0; i < payload_len; i++)
+			printk(" %02x", payload[i]);
+		printk("\n");
+		printk(KERN_DEBUG "TKIP decrypt: iv16=%04x iv32=%08x\n",
+		       iv16, iv32);
+	}
+#endif /* CONFIG_TKIP_DEBUG */
+
+	if (!(keyid & (1 << 5)))
+		return TKIP_DECRYPT_NO_EXT_IV;
+
+	if ((keyid >> 6) != key->keyidx)
+		return TKIP_DECRYPT_INVALID_KEYIDX;
+
+	if (key->u.tkip.rx_initialized[queue] &&
+	    (iv32 < key->u.tkip.iv32_rx[queue] ||
+	     (iv32 == key->u.tkip.iv32_rx[queue] &&
+	      iv16 <= key->u.tkip.iv16_rx[queue]))) {
+#ifdef CONFIG_TKIP_DEBUG
+		printk(KERN_DEBUG "TKIP replay detected for RX frame from "
+		       MAC_FMT " (RX IV (%04x,%02x) <= prev. IV (%04x,%02x)\n",
+		       MAC_ARG(ta),
+		       iv32, iv16, key->u.tkip.iv32_rx[queue],
+		       key->u.tkip.iv16_rx[queue]);
+#endif /* CONFIG_TKIP_DEBUG */
+		return TKIP_DECRYPT_REPLAY;
+	}
+
+	if (only_iv) {
+		res = TKIP_DECRYPT_OK;
+		key->u.tkip.rx_initialized[queue] = 1;
+		goto done;
+	}
+
+	if (!key->u.tkip.rx_initialized[queue] ||
+	    key->u.tkip.iv32_rx[queue] != iv32) {
+		key->u.tkip.rx_initialized[queue] = 1;
+		/* IV16 wrapped around - perform TKIP phase 1 */
+		tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+				   iv32, key->u.tkip.p1k_rx[queue]);
+#ifdef CONFIG_TKIP_DEBUG
+		{
+			int i;
+			printk(KERN_DEBUG "TKIP decrypt: Phase1 TA=" MAC_FMT
+			       " TK=", MAC_ARG(ta));
+			for (i = 0; i < 16; i++)
+				printk("%02x ",
+				       key->key[ALG_TKIP_TEMP_ENCR_KEY + i]);
+			printk("\n");
+			printk(KERN_DEBUG "TKIP decrypt: P1K=");
+			for (i = 0; i < 5; i++)
+				printk("%04x ", key->u.tkip.p1k_rx[queue][i]);
+			printk("\n");
+		}
+#endif /* CONFIG_TKIP_DEBUG */
+	}
+
+	tkip_mixing_phase2(key->u.tkip.p1k_rx[queue],
+			   &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+			   iv16, rc4key);
+#ifdef CONFIG_TKIP_DEBUG
+	{
+		int i;
+		printk(KERN_DEBUG "TKIP decrypt: Phase2 rc4key=");
+		for (i = 0; i < 16; i++)
+			printk("%02x ", rc4key[i]);
+		printk("\n");
+	}
+#endif /* CONFIG_TKIP_DEBUG */
+
+	res = ieee80211_wep_decrypt_data(tfm, rc4key, 16, pos, payload_len - 12);
+ done:
+	if (res == TKIP_DECRYPT_OK) {
+		/* FIX: these should be updated only after Michael MIC has been
+		 * verified */
+		/* Record previously received IV */
+		key->u.tkip.iv32_rx[queue] = iv32;
+		key->u.tkip.iv16_rx[queue] = iv16;
+	}
+
+	return res;
+}
+
+
diff --git a/net/mac80211/tkip.h b/net/mac80211/tkip.h
new file mode 100644
index 0000000..a0d181a
--- /dev/null
+++ b/net/mac80211/tkip.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef TKIP_H
+#define TKIP_H
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include "ieee80211_key.h"
+
+u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
+			   u8 iv0, u8 iv1, u8 iv2);
+void ieee80211_tkip_gen_phase1key(struct ieee80211_key *key, u8 *ta,
+				  u16 *phase1key);
+void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
+			       u8 *rc4key);
+void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm,
+				 struct ieee80211_key *key,
+				 u8 *pos, size_t payload_len, u8 *ta);
+enum {
+	TKIP_DECRYPT_OK = 0,
+	TKIP_DECRYPT_NO_EXT_IV = -1,
+	TKIP_DECRYPT_INVALID_KEYIDX = -2,
+	TKIP_DECRYPT_REPLAY = -3,
+};
+int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
+				struct ieee80211_key *key,
+				u8 *payload, size_t payload_len, u8 *ta,
+				int only_iv, int queue);
+
+#endif /* TKIP_H */
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
new file mode 100644
index 0000000..1ad3d75
--- /dev/null
+++ b/net/mac80211/wep.c
@@ -0,0 +1,328 @@
+/*
+ * Software WEP encryption implementation
+ * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/random.h>
+#include <linux/compiler.h>
+#include <linux/crc32.h>
+#include <linux/crypto.h>
+#include <linux/err.h>
+#include <linux/mm.h>
+#include <asm/scatterlist.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "wep.h"
+
+
+int ieee80211_wep_init(struct ieee80211_local *local)
+{
+	/* start WEP IV from a random value */
+	get_random_bytes(&local->wep_iv, WEP_IV_LEN);
+
+	local->wep_tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
+						CRYPTO_ALG_ASYNC);
+	if (IS_ERR(local->wep_tx_tfm))
+		return -ENOMEM;
+
+	local->wep_rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
+						CRYPTO_ALG_ASYNC);
+	if (IS_ERR(local->wep_rx_tfm)) {
+		crypto_free_blkcipher(local->wep_tx_tfm);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void ieee80211_wep_free(struct ieee80211_local *local)
+{
+	crypto_free_blkcipher(local->wep_tx_tfm);
+	crypto_free_blkcipher(local->wep_rx_tfm);
+}
+
+static inline int ieee80211_wep_weak_iv(u32 iv, int keylen)
+{
+	/* Fluhrer, Mantin, and Shamir have reported weaknesses in the
+	 * key scheduling algorithm of RC4. At least IVs (KeyByte + 3,
+	 * 0xff, N) can be used to speedup attacks, so avoid using them. */
+	if ((iv & 0xff00) == 0xff00) {
+		u8 B = (iv >> 16) & 0xff;
+		if (B >= 3 && B < 3 + keylen)
+			return 1;
+	}
+	return 0;
+}
+
+
+void ieee80211_wep_get_iv(struct ieee80211_local *local,
+			  struct ieee80211_key *key, u8 *iv)
+{
+	local->wep_iv++;
+	if (ieee80211_wep_weak_iv(local->wep_iv, key->keylen))
+		local->wep_iv += 0x0100;
+
+	if (!iv)
+		return;
+
+	*iv++ = (local->wep_iv >> 16) & 0xff;
+	*iv++ = (local->wep_iv >> 8) & 0xff;
+	*iv++ = local->wep_iv & 0xff;
+	*iv++ = key->keyidx << 6;
+}
+
+
+u8 * ieee80211_wep_add_iv(struct ieee80211_local *local,
+			  struct sk_buff *skb,
+			  struct ieee80211_key *key)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+	u8 *newhdr;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	fc |= IEEE80211_FCTL_PROTECTED;
+	hdr->frame_control = cpu_to_le16(fc);
+
+	if ((skb_headroom(skb) < WEP_IV_LEN ||
+	     skb_tailroom(skb) < WEP_ICV_LEN)) {
+		I802_DEBUG_INC(local->tx_expand_skb_head);
+		if (unlikely(pskb_expand_head(skb, WEP_IV_LEN, WEP_ICV_LEN,
+					      GFP_ATOMIC)))
+			return NULL;
+	}
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+	newhdr = skb_push(skb, WEP_IV_LEN);
+	memmove(newhdr, newhdr + WEP_IV_LEN, hdrlen);
+	ieee80211_wep_get_iv(local, key, newhdr + hdrlen);
+	return newhdr + hdrlen;
+}
+
+
+void ieee80211_wep_remove_iv(struct ieee80211_local *local,
+			     struct sk_buff *skb,
+			     struct ieee80211_key *key)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+	memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
+	skb_pull(skb, WEP_IV_LEN);
+}
+
+
+/* Perform WEP encryption using given key. data buffer must have tailroom
+ * for 4-byte ICV. data_len must not include this ICV. Note: this function
+ * does _not_ add IV. data = RC4(data | CRC32(data)) */
+void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
+				size_t klen, u8 *data, size_t data_len)
+{
+	struct blkcipher_desc desc = { .tfm = tfm };
+	struct scatterlist sg;
+	__le32 *icv;
+
+	icv = (__le32 *)(data + data_len);
+	*icv = cpu_to_le32(~crc32_le(~0, data, data_len));
+
+	crypto_blkcipher_setkey(tfm, rc4key, klen);
+	sg.page = virt_to_page(data);
+	sg.offset = offset_in_page(data);
+	sg.length = data_len + WEP_ICV_LEN;
+	crypto_blkcipher_encrypt(&desc, &sg, &sg, sg.length);
+}
+
+
+/* Perform WEP encryption on given skb. 4 bytes of extra space (IV) in the
+ * beginning of the buffer 4 bytes of extra space (ICV) in the end of the
+ * buffer will be added. Both IV and ICV will be transmitted, so the
+ * payload length increases with 8 bytes.
+ *
+ * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
+ */
+int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_key *key)
+{
+	u32 klen;
+	u8 *rc4key, *iv;
+	size_t len;
+
+	if (!key || key->alg != ALG_WEP)
+		return -1;
+
+	klen = 3 + key->keylen;
+	rc4key = kmalloc(klen, GFP_ATOMIC);
+	if (!rc4key)
+		return -1;
+
+	iv = ieee80211_wep_add_iv(local, skb, key);
+	if (!iv) {
+		kfree(rc4key);
+		return -1;
+	}
+
+	len = skb->len - (iv + WEP_IV_LEN - skb->data);
+
+	/* Prepend 24-bit IV to RC4 key */
+	memcpy(rc4key, iv, 3);
+
+	/* Copy rest of the WEP key (the secret part) */
+	memcpy(rc4key + 3, key->key, key->keylen);
+
+	/* Add room for ICV */
+	skb_put(skb, WEP_ICV_LEN);
+
+	ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, klen,
+				   iv + WEP_IV_LEN, len);
+
+	kfree(rc4key);
+
+	return 0;
+}
+
+
+/* Perform WEP decryption using given key. data buffer includes encrypted
+ * payload, including 4-byte ICV, but _not_ IV. data_len must not include ICV.
+ * Return 0 on success and -1 on ICV mismatch. */
+int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
+			       size_t klen, u8 *data, size_t data_len)
+{
+	struct blkcipher_desc desc = { .tfm = tfm };
+	struct scatterlist sg;
+	__le32 crc;
+
+	crypto_blkcipher_setkey(tfm, rc4key, klen);
+	sg.page = virt_to_page(data);
+	sg.offset = offset_in_page(data);
+	sg.length = data_len + WEP_ICV_LEN;
+	crypto_blkcipher_decrypt(&desc, &sg, &sg, sg.length);
+
+	crc = cpu_to_le32(~crc32_le(~0, data, data_len));
+	if (memcmp(&crc, data + data_len, WEP_ICV_LEN) != 0)
+		/* ICV mismatch */
+		return -1;
+
+	return 0;
+}
+
+
+/* Perform WEP decryption on given skb. Buffer includes whole WEP part of
+ * the frame: IV (4 bytes), encrypted payload (including SNAP header),
+ * ICV (4 bytes). skb->len includes both IV and ICV.
+ *
+ * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
+ * failure. If frame is OK, IV and ICV will be removed, i.e., decrypted payload
+ * is moved to the beginning of the skb and skb length will be reduced.
+ */
+int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_key *key)
+{
+	u32 klen;
+	u8 *rc4key;
+	u8 keyidx;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+	size_t len;
+	int ret = 0;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	if (!(fc & IEEE80211_FCTL_PROTECTED))
+		return -1;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	if (skb->len < 8 + hdrlen)
+		return -1;
+
+	len = skb->len - hdrlen - 8;
+
+	keyidx = skb->data[hdrlen + 3] >> 6;
+
+	if (!key || keyidx != key->keyidx || key->alg != ALG_WEP)
+		return -1;
+
+	klen = 3 + key->keylen;
+
+	rc4key = kmalloc(klen, GFP_ATOMIC);
+	if (!rc4key)
+		return -1;
+
+	/* Prepend 24-bit IV to RC4 key */
+	memcpy(rc4key, skb->data + hdrlen, 3);
+
+	/* Copy rest of the WEP key (the secret part) */
+	memcpy(rc4key + 3, key->key, key->keylen);
+
+	if (ieee80211_wep_decrypt_data(local->wep_rx_tfm, rc4key, klen,
+				       skb->data + hdrlen + WEP_IV_LEN,
+				       len)) {
+		printk(KERN_DEBUG "WEP decrypt failed (ICV)\n");
+		ret = -1;
+	}
+
+	kfree(rc4key);
+
+	/* Trim ICV */
+	skb_trim(skb, skb->len - WEP_ICV_LEN);
+
+	/* Remove IV */
+	memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
+	skb_pull(skb, WEP_IV_LEN);
+
+	return ret;
+}
+
+
+int ieee80211_wep_get_keyidx(struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	if (!(fc & IEEE80211_FCTL_PROTECTED))
+		return -1;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	if (skb->len < 8 + hdrlen)
+		return -1;
+
+	return skb->data[hdrlen + 3] >> 6;
+}
+
+
+u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 fc;
+	int hdrlen;
+	u8 *ivpos;
+	u32 iv;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	if (!(fc & IEEE80211_FCTL_PROTECTED))
+		return NULL;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+	ivpos = skb->data + hdrlen;
+	iv = (ivpos[0] << 16) | (ivpos[1] << 8) | ivpos[2];
+
+	if (ieee80211_wep_weak_iv(iv, key->keylen))
+		return ivpos;
+
+	return NULL;
+}
diff --git a/net/mac80211/wep.h b/net/mac80211/wep.h
new file mode 100644
index 0000000..bfe29e8
--- /dev/null
+++ b/net/mac80211/wep.h
@@ -0,0 +1,40 @@
+/*
+ * Software WEP encryption implementation
+ * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef WEP_H
+#define WEP_H
+
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include "ieee80211_i.h"
+#include "ieee80211_key.h"
+
+int ieee80211_wep_init(struct ieee80211_local *local);
+void ieee80211_wep_free(struct ieee80211_local *local);
+void ieee80211_wep_get_iv(struct ieee80211_local *local,
+			  struct ieee80211_key *key, u8 *iv);
+u8 * ieee80211_wep_add_iv(struct ieee80211_local *local,
+			  struct sk_buff *skb,
+			  struct ieee80211_key *key);
+void ieee80211_wep_remove_iv(struct ieee80211_local *local,
+			     struct sk_buff *skb,
+			     struct ieee80211_key *key);
+void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
+				size_t klen, u8 *data, size_t data_len);
+int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
+			       size_t klen, u8 *data, size_t data_len);
+int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_key *key);
+int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_key *key);
+int ieee80211_wep_get_keyidx(struct sk_buff *skb);
+u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key);
+
+#endif /* WEP_H */
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
new file mode 100644
index 0000000..89ce815
--- /dev/null
+++ b/net/mac80211/wme.c
@@ -0,0 +1,678 @@
+/*
+ * Copyright 2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/types.h>
+#include <net/ip.h>
+#include <net/pkt_sched.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "wme.h"
+
+static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
+{
+	return (fc & 0x8C) == 0x88;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
+{
+	u8 *data = rx->skb->data;
+	int tid;
+
+	/* does the frame have a qos control field? */
+	if (WLAN_FC_IS_QOS_DATA(rx->fc)) {
+		u8 *qc = data + ieee80211_get_hdrlen(rx->fc) - QOS_CONTROL_LEN;
+		/* frame has qos control */
+		tid = qc[0] & QOS_CONTROL_TID_MASK;
+	} else {
+		if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
+			/* Separate TID for management frames */
+			tid = NUM_RX_DATA_QUEUES - 1;
+		} else {
+			/* no qos control present */
+			tid = 0; /* 802.1d - Best Effort */
+		}
+	}
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	I802_DEBUG_INC(rx->local->wme_rx_queue[tid]);
+	if (rx->sta) {
+		I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]);
+	}
+#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+
+	rx->u.rx.queue = tid;
+	/* Set skb->priority to 1d tag if highest order bit of TID is not set.
+	 * For now, set skb->priority to 0 for other cases. */
+	rx->skb->priority = (tid > 7) ? 0 : tid;
+
+	return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx)
+{
+	u16 fc = rx->fc;
+	u8 *data = rx->skb->data;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data;
+
+	if (!WLAN_FC_IS_QOS_DATA(fc))
+		return TXRX_CONTINUE;
+
+	/* remove the qos control field, update frame type and meta-data */
+	memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2);
+	hdr = (struct ieee80211_hdr *) skb_pull(rx->skb, 2);
+	/* change frame type to non QOS */
+	rx->fc = fc &= ~IEEE80211_STYPE_QOS_DATA;
+	hdr->frame_control = cpu_to_le16(fc);
+
+	return TXRX_CONTINUE;
+}
+
+
+#ifdef CONFIG_NET_SCHED
+/* maximum number of hardware queues we support. */
+#define TC_80211_MAX_QUEUES 8
+
+struct ieee80211_sched_data
+{
+	struct tcf_proto *filter_list;
+	struct Qdisc *queues[TC_80211_MAX_QUEUES];
+	struct sk_buff_head requeued[TC_80211_MAX_QUEUES];
+};
+
+
+/* given a data frame determine the 802.1p/1d tag to use */
+static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
+{
+	struct iphdr *ip;
+	int dscp;
+	int offset;
+
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct tcf_result res = { -1, 0 };
+
+	/* if there is a user set filter list, call out to that */
+	if (q->filter_list) {
+		tc_classify(skb, q->filter_list, &res);
+		if (res.class != -1)
+			return res.class;
+	}
+
+	/* skb->priority values from 256->263 are magic values to
+	 * directly indicate a specific 802.1d priority.
+	 * This is used to allow 802.1d priority to be passed directly in
+	 * from VLAN tags, etc. */
+	if (skb->priority >= 256 && skb->priority <= 263)
+		return skb->priority - 256;
+
+	/* check there is a valid IP header present */
+	offset = ieee80211_get_hdrlen_from_skb(skb) + 8 /* LLC + proto */;
+	if (skb->protocol != __constant_htons(ETH_P_IP) ||
+	    skb->len < offset + sizeof(*ip))
+		return 0;
+
+	ip = (struct iphdr *) (skb->data + offset);
+
+	dscp = ip->tos & 0xfc;
+	if (dscp & 0x1c)
+		return 0;
+	return dscp >> 5;
+}
+
+
+static inline int wme_downgrade_ac(struct sk_buff *skb)
+{
+	switch (skb->priority) {
+	case 6:
+	case 7:
+		skb->priority = 5; /* VO -> VI */
+		return 0;
+	case 4:
+	case 5:
+		skb->priority = 3; /* VI -> BE */
+		return 0;
+	case 0:
+	case 3:
+		skb->priority = 2; /* BE -> BK */
+		return 0;
+	default:
+		return -1;
+	}
+}
+
+
+/* positive return value indicates which queue to use
+ * negative return value indicates to drop the frame */
+static inline int classify80211(struct sk_buff *skb, struct Qdisc *qd)
+{
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_tx_packet_data *pkt_data =
+		(struct ieee80211_tx_packet_data *) skb->cb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	unsigned short fc = le16_to_cpu(hdr->frame_control);
+	int qos;
+	const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
+
+	/* see if frame is data or non data frame */
+	if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) {
+		/* management frames go on AC_VO queue, but are sent
+		* without QoS control fields */
+		return IEEE80211_TX_QUEUE_DATA0;
+	}
+
+	if (unlikely(pkt_data->mgmt_iface)) {
+		/* Data frames from hostapd (mainly, EAPOL) use AC_VO
+		* and they will include QoS control fields if
+		* the target STA is using WME. */
+		skb->priority = 7;
+		return ieee802_1d_to_ac[skb->priority];
+	}
+
+	/* is this a QoS frame? */
+	qos = fc & IEEE80211_STYPE_QOS_DATA;
+
+	if (!qos) {
+		skb->priority = 0; /* required for correct WPA/11i MIC */
+		return ieee802_1d_to_ac[skb->priority];
+	}
+
+	/* use the data classifier to determine what 802.1d tag the
+	* data frame has */
+	skb->priority = classify_1d(skb, qd);
+
+	/* incase we are a client verify acm is not set for this ac */
+	while (unlikely(local->wmm_acm & BIT(skb->priority))) {
+		if (wme_downgrade_ac(skb)) {
+			/* No AC with lower priority has acm=0,
+			* drop packet. */
+			return -1;
+		}
+	}
+
+	/* look up which queue to use for frames with this 1d tag */
+	return ieee802_1d_to_ac[skb->priority];
+}
+
+
+static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
+{
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_tx_packet_data *pkt_data =
+		(struct ieee80211_tx_packet_data *) skb->cb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	unsigned short fc = le16_to_cpu(hdr->frame_control);
+	struct Qdisc *qdisc;
+	int err, queue;
+
+	if (pkt_data->requeue) {
+		skb_queue_tail(&q->requeued[pkt_data->queue], skb);
+		qd->q.qlen++;
+		return 0;
+	}
+
+	queue = classify80211(skb, qd);
+
+	/* now we know the 1d priority, fill in the QoS header if there is one
+	 */
+	if (WLAN_FC_IS_QOS_DATA(fc)) {
+		u8 *p = skb->data + ieee80211_get_hdrlen(fc) - 2;
+		u8 qos_hdr = skb->priority & QOS_CONTROL_TAG1D_MASK;
+		if (local->wifi_wme_noack_test)
+			qos_hdr |= QOS_CONTROL_ACK_POLICY_NOACK <<
+					QOS_CONTROL_ACK_POLICY_SHIFT;
+		/* qos header is 2 bytes, second reserved */
+		*p = qos_hdr;
+		p++;
+		*p = 0;
+	}
+
+	if (unlikely(queue >= local->hw.queues)) {
+#if 0
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s - queue=%d (hw does not "
+			       "support) -> %d\n",
+			       __func__, queue, local->hw.queues - 1);
+		}
+#endif
+		queue = local->hw.queues - 1;
+	}
+
+	if (unlikely(queue < 0)) {
+			kfree_skb(skb);
+			err = NET_XMIT_DROP;
+	} else {
+		pkt_data->queue = (unsigned int) queue;
+		qdisc = q->queues[queue];
+		err = qdisc->enqueue(skb, qdisc);
+		if (err == NET_XMIT_SUCCESS) {
+			qd->q.qlen++;
+			qd->bstats.bytes += skb->len;
+			qd->bstats.packets++;
+			return NET_XMIT_SUCCESS;
+		}
+	}
+	qd->qstats.drops++;
+	return err;
+}
+
+
+/* TODO: clean up the cases where master_hard_start_xmit
+ * returns non 0 - it shouldn't ever do that. Once done we
+ * can remove this function */
+static int wme_qdiscop_requeue(struct sk_buff *skb, struct Qdisc* qd)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_tx_packet_data *pkt_data =
+		(struct ieee80211_tx_packet_data *) skb->cb;
+	struct Qdisc *qdisc;
+	int err;
+
+	/* we recorded which queue to use earlier! */
+	qdisc = q->queues[pkt_data->queue];
+
+	if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) {
+		qd->q.qlen++;
+		return 0;
+	}
+	qd->qstats.drops++;
+	return err;
+}
+
+
+static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct net_device *dev = qd->dev;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	struct sk_buff *skb;
+	struct Qdisc *qdisc;
+	int queue;
+
+	/* check all the h/w queues in numeric/priority order */
+	for (queue = 0; queue < hw->queues; queue++) {
+		/* see if there is room in this hardware queue */
+		if (test_bit(IEEE80211_LINK_STATE_XOFF,
+			     &local->state[queue]) ||
+		    test_bit(IEEE80211_LINK_STATE_PENDING,
+			     &local->state[queue]))
+			continue;
+
+		/* there is space - try and get a frame */
+		skb = skb_dequeue(&q->requeued[queue]);
+		if (skb) {
+			qd->q.qlen--;
+			return skb;
+		}
+
+		qdisc = q->queues[queue];
+		skb = qdisc->dequeue(qdisc);
+		if (skb) {
+			qd->q.qlen--;
+			return skb;
+		}
+	}
+	/* returning a NULL here when all the h/w queues are full means we
+	 * never need to call netif_stop_queue in the driver */
+	return NULL;
+}
+
+
+static void wme_qdiscop_reset(struct Qdisc* qd)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	int queue;
+
+	/* QUESTION: should we have some hardware flush functionality here? */
+
+	for (queue = 0; queue < hw->queues; queue++) {
+		skb_queue_purge(&q->requeued[queue]);
+		qdisc_reset(q->queues[queue]);
+	}
+	qd->q.qlen = 0;
+}
+
+
+static void wme_qdiscop_destroy(struct Qdisc* qd)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	int queue;
+
+	tcf_destroy_chain(q->filter_list);
+	q->filter_list = NULL;
+
+	for (queue=0; queue < hw->queues; queue++) {
+		skb_queue_purge(&q->requeued[queue]);
+		qdisc_destroy(q->queues[queue]);
+		q->queues[queue] = &noop_qdisc;
+	}
+}
+
+
+/* called whenever parameters are updated on existing qdisc */
+static int wme_qdiscop_tune(struct Qdisc *qd, struct rtattr *opt)
+{
+/*	struct ieee80211_sched_data *q = qdisc_priv(qd);
+*/
+	/* check our options block is the right size */
+	/* copy any options to our local structure */
+/*	Ignore options block for now - always use static mapping
+	struct tc_ieee80211_qopt *qopt = RTA_DATA(opt);
+
+	if (opt->rta_len < RTA_LENGTH(sizeof(*qopt)))
+		return -EINVAL;
+	memcpy(q->tag2queue, qopt->tag2queue, sizeof(qopt->tag2queue));
+*/
+	return 0;
+}
+
+
+/* called during initial creation of qdisc on device */
+static int wme_qdiscop_init(struct Qdisc *qd, struct rtattr *opt)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct net_device *dev = qd->dev;
+	struct ieee80211_local *local;
+	int queues;
+	int err = 0, i;
+
+	/* check that device is a mac80211 device */
+	if (!dev->ieee80211_ptr ||
+	    dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
+		return -EINVAL;
+
+	/* check this device is an ieee80211 master type device */
+	if (dev->type != ARPHRD_IEEE80211)
+		return -EINVAL;
+
+	/* check that there is no qdisc currently attached to device
+	 * this ensures that we will be the root qdisc. (I can't find a better
+	 * way to test this explicitly) */
+	if (dev->qdisc_sleeping != &noop_qdisc)
+		return -EINVAL;
+
+	if (qd->flags & TCQ_F_INGRESS)
+		return -EINVAL;
+
+	local = wdev_priv(dev->ieee80211_ptr);
+	queues = local->hw.queues;
+
+	/* if options were passed in, set them */
+	if (opt) {
+		err = wme_qdiscop_tune(qd, opt);
+	}
+
+	/* create child queues */
+	for (i = 0; i < queues; i++) {
+		skb_queue_head_init(&q->requeued[i]);
+		q->queues[i] = qdisc_create_dflt(qd->dev, &pfifo_qdisc_ops,
+						 qd->handle);
+		if (q->queues[i] == 0) {
+			q->queues[i] = &noop_qdisc;
+			printk(KERN_ERR "%s child qdisc %i creation failed", dev->name, i);
+		}
+	}
+
+	return err;
+}
+
+static int wme_qdiscop_dump(struct Qdisc *qd, struct sk_buff *skb)
+{
+/*	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	unsigned char *p = skb->tail;
+	struct tc_ieee80211_qopt opt;
+
+	memcpy(&opt.tag2queue, q->tag2queue, TC_80211_MAX_TAG + 1);
+	RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
+*/	return skb->len;
+/*
+rtattr_failure:
+	skb_trim(skb, p - skb->data);*/
+	return -1;
+}
+
+
+static int wme_classop_graft(struct Qdisc *qd, unsigned long arg,
+			     struct Qdisc *new, struct Qdisc **old)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	unsigned long queue = arg - 1;
+
+	if (queue >= hw->queues)
+		return -EINVAL;
+
+	if (!new)
+		new = &noop_qdisc;
+
+	sch_tree_lock(qd);
+	*old = q->queues[queue];
+	q->queues[queue] = new;
+	qdisc_reset(*old);
+	sch_tree_unlock(qd);
+
+	return 0;
+}
+
+
+static struct Qdisc *
+wme_classop_leaf(struct Qdisc *qd, unsigned long arg)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	unsigned long queue = arg - 1;
+
+	if (queue >= hw->queues)
+		return NULL;
+
+	return q->queues[queue];
+}
+
+
+static unsigned long wme_classop_get(struct Qdisc *qd, u32 classid)
+{
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	unsigned long queue = TC_H_MIN(classid);
+
+	if (queue - 1 >= hw->queues)
+		return 0;
+
+	return queue;
+}
+
+
+static unsigned long wme_classop_bind(struct Qdisc *qd, unsigned long parent,
+				      u32 classid)
+{
+	return wme_classop_get(qd, classid);
+}
+
+
+static void wme_classop_put(struct Qdisc *q, unsigned long cl)
+{
+}
+
+
+static int wme_classop_change(struct Qdisc *qd, u32 handle, u32 parent,
+			      struct rtattr **tca, unsigned long *arg)
+{
+	unsigned long cl = *arg;
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+
+	if (cl - 1 > hw->queues)
+		return -ENOENT;
+
+	/* TODO: put code to program hardware queue parameters here,
+	 * to allow programming from tc command line */
+
+	return 0;
+}
+
+
+/* we don't support deleting hardware queues
+ * when we add WMM-SA support - TSPECs may be deleted here */
+static int wme_classop_delete(struct Qdisc *qd, unsigned long cl)
+{
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+
+	if (cl - 1 > hw->queues)
+		return -ENOENT;
+	return 0;
+}
+
+
+static int wme_classop_dump_class(struct Qdisc *qd, unsigned long cl,
+				  struct sk_buff *skb, struct tcmsg *tcm)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+
+	if (cl - 1 > hw->queues)
+		return -ENOENT;
+	tcm->tcm_handle = TC_H_MIN(cl);
+	tcm->tcm_parent = qd->handle;
+	tcm->tcm_info = q->queues[cl-1]->handle; /* do we need this? */
+	return 0;
+}
+
+
+static void wme_classop_walk(struct Qdisc *qd, struct qdisc_walker *arg)
+{
+	struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = &local->hw;
+	int queue;
+
+	if (arg->stop)
+		return;
+
+	for (queue = 0; queue < hw->queues; queue++) {
+		if (arg->count < arg->skip) {
+			arg->count++;
+			continue;
+		}
+		/* we should return classids for our internal queues here
+		 * as well as the external ones */
+		if (arg->fn(qd, queue+1, arg) < 0) {
+			arg->stop = 1;
+			break;
+		}
+		arg->count++;
+	}
+}
+
+
+static struct tcf_proto ** wme_classop_find_tcf(struct Qdisc *qd,
+						unsigned long cl)
+{
+	struct ieee80211_sched_data *q = qdisc_priv(qd);
+
+	if (cl)
+		return NULL;
+
+	return &q->filter_list;
+}
+
+
+/* this qdisc is classful (i.e. has classes, some of which may have leaf qdiscs attached)
+ * - these are the operations on the classes */
+static struct Qdisc_class_ops class_ops =
+{
+	.graft = wme_classop_graft,
+	.leaf = wme_classop_leaf,
+
+	.get = wme_classop_get,
+	.put = wme_classop_put,
+	.change = wme_classop_change,
+	.delete = wme_classop_delete,
+	.walk = wme_classop_walk,
+
+	.tcf_chain = wme_classop_find_tcf,
+	.bind_tcf = wme_classop_bind,
+	.unbind_tcf = wme_classop_put,
+
+	.dump = wme_classop_dump_class,
+};
+
+
+/* queueing discipline operations */
+static struct Qdisc_ops wme_qdisc_ops =
+{
+	.next = NULL,
+	.cl_ops = &class_ops,
+	.id = "ieee80211",
+	.priv_size = sizeof(struct ieee80211_sched_data),
+
+	.enqueue = wme_qdiscop_enqueue,
+	.dequeue = wme_qdiscop_dequeue,
+	.requeue = wme_qdiscop_requeue,
+	.drop = NULL, /* drop not needed since we are always the root qdisc */
+
+	.init = wme_qdiscop_init,
+	.reset = wme_qdiscop_reset,
+	.destroy = wme_qdiscop_destroy,
+	.change = wme_qdiscop_tune,
+
+	.dump = wme_qdiscop_dump,
+};
+
+
+void ieee80211_install_qdisc(struct net_device *dev)
+{
+	struct Qdisc *qdisc;
+
+	qdisc = qdisc_create_dflt(dev, &wme_qdisc_ops, TC_H_ROOT);
+	if (!qdisc) {
+		printk(KERN_ERR "%s: qdisc installation failed\n", dev->name);
+		return;
+	}
+
+	/* same handle as would be allocated by qdisc_alloc_handle() */
+	qdisc->handle = 0x80010000;
+
+	qdisc_lock_tree(dev);
+	list_add_tail(&qdisc->list, &dev->qdisc_list);
+	dev->qdisc_sleeping = qdisc;
+	qdisc_unlock_tree(dev);
+}
+
+
+int ieee80211_qdisc_installed(struct net_device *dev)
+{
+	return dev->qdisc_sleeping->ops == &wme_qdisc_ops;
+}
+
+
+int ieee80211_wme_register(void)
+{
+	return register_qdisc(&wme_qdisc_ops);
+}
+
+
+void ieee80211_wme_unregister(void)
+{
+	unregister_qdisc(&wme_qdisc_ops);
+}
+#endif /* CONFIG_NET_SCHED */
diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h
new file mode 100644
index 0000000..f0bff10
--- /dev/null
+++ b/net/mac80211/wme.h
@@ -0,0 +1,57 @@
+/*
+ * IEEE 802.11 driver (80211.o) - QoS datatypes
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _WME_H
+#define _WME_H
+
+#include <linux/netdevice.h>
+#include "ieee80211_i.h"
+
+#define QOS_CONTROL_LEN 2
+
+#define QOS_CONTROL_ACK_POLICY_NORMAL 0
+#define QOS_CONTROL_ACK_POLICY_NOACK 1
+
+#define QOS_CONTROL_TID_MASK 0x0f
+#define QOS_CONTROL_ACK_POLICY_SHIFT 5
+
+#define QOS_CONTROL_TAG1D_MASK 0x07
+
+ieee80211_txrx_result
+ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx);
+
+#ifdef CONFIG_NET_SCHED
+void ieee80211_install_qdisc(struct net_device *dev);
+int ieee80211_qdisc_installed(struct net_device *dev);
+
+int ieee80211_wme_register(void);
+void ieee80211_wme_unregister(void);
+#else
+static inline void ieee80211_install_qdisc(struct net_device *dev)
+{
+}
+static inline int ieee80211_qdisc_installed(struct net_device *dev)
+{
+	return 0;
+}
+
+static inline int ieee80211_wme_register(void)
+{
+	return 0;
+}
+static inline void ieee80211_wme_unregister(void)
+{
+}
+#endif /* CONFIG_NET_SCHED */
+
+#endif /* _WME_H */
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
new file mode 100644
index 0000000..783af32
--- /dev/null
+++ b/net/mac80211/wpa.c
@@ -0,0 +1,660 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/compiler.h>
+#include <net/iw_handler.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_common.h"
+#include "ieee80211_i.h"
+#include "michael.h"
+#include "tkip.h"
+#include "aes_ccm.h"
+#include "wpa.h"
+
+static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
+				  u8 *qos_tid, u8 **data, size_t *data_len)
+{
+	struct ieee80211_hdr *hdr;
+	size_t hdrlen;
+	u16 fc;
+	int a4_included;
+	u8 *pos;
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	fc = le16_to_cpu(hdr->frame_control);
+
+	hdrlen = 24;
+	if ((fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) ==
+	    (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
+		hdrlen += ETH_ALEN;
+		*sa = hdr->addr4;
+		*da = hdr->addr3;
+	} else if (fc & IEEE80211_FCTL_FROMDS) {
+		*sa = hdr->addr3;
+		*da = hdr->addr1;
+	} else if (fc & IEEE80211_FCTL_TODS) {
+		*sa = hdr->addr2;
+		*da = hdr->addr3;
+	} else {
+		*sa = hdr->addr2;
+		*da = hdr->addr1;
+	}
+
+	if (fc & 0x80)
+		hdrlen += 2;
+
+	*data = skb->data + hdrlen;
+	*data_len = skb->len - hdrlen;
+
+	a4_included = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+		(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
+	if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+	    fc & IEEE80211_STYPE_QOS_DATA) {
+		pos = (u8 *) &hdr->addr4;
+		if (a4_included)
+			pos += 6;
+		*qos_tid = pos[0] & 0x0f;
+		*qos_tid |= 0x80; /* qos_included flag */
+	} else
+		*qos_tid = 0;
+
+	return skb->len < hdrlen ? -1 : 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
+{
+	u8 *data, *sa, *da, *key, *mic, qos_tid;
+	size_t data_len;
+	u16 fc;
+	struct sk_buff *skb = tx->skb;
+	int authenticator;
+	int wpa_test = 0;
+
+	fc = tx->fc;
+
+	if (!tx->key || tx->key->alg != ALG_TKIP || skb->len < 24 ||
+	    !WLAN_FC_DATA_PRESENT(fc))
+		return TXRX_CONTINUE;
+
+	if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len))
+		return TXRX_DROP;
+
+	if (!tx->key->force_sw_encrypt &&
+	    !tx->fragmented &&
+	    !(tx->local->hw.flags & IEEE80211_HW_TKIP_INCLUDE_MMIC) &&
+	    !wpa_test) {
+		/* hwaccel - with no need for preallocated room for Michael MIC
+		 */
+		return TXRX_CONTINUE;
+	}
+
+	if (skb_tailroom(skb) < MICHAEL_MIC_LEN) {
+		I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+		if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN,
+					      MICHAEL_MIC_LEN + TKIP_ICV_LEN,
+					      GFP_ATOMIC))) {
+			printk(KERN_DEBUG "%s: failed to allocate more memory "
+			       "for Michael MIC\n", tx->dev->name);
+			return TXRX_DROP;
+		}
+	}
+
+#if 0
+	authenticator = fc & IEEE80211_FCTL_FROMDS; /* FIX */
+#else
+	authenticator = 1;
+#endif
+	key = &tx->key->key[authenticator ? ALG_TKIP_TEMP_AUTH_TX_MIC_KEY :
+			    ALG_TKIP_TEMP_AUTH_RX_MIC_KEY];
+	mic = skb_put(skb, MICHAEL_MIC_LEN);
+	michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+
+	return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
+{
+	u8 *data, *sa, *da, *key = NULL, qos_tid;
+	size_t data_len;
+	u16 fc;
+	u8 mic[MICHAEL_MIC_LEN];
+	struct sk_buff *skb = rx->skb;
+	int authenticator = 1, wpa_test = 0;
+
+	fc = rx->fc;
+
+	/* If device handles decryption totally, skip this check */
+	if ((rx->local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP) ||
+	    (rx->local->hw.flags & IEEE80211_HW_DEVICE_STRIPS_MIC))
+		return TXRX_CONTINUE;
+
+	if (!rx->key || rx->key->alg != ALG_TKIP ||
+	    !(rx->fc & IEEE80211_FCTL_PROTECTED) || !WLAN_FC_DATA_PRESENT(fc))
+		return TXRX_CONTINUE;
+
+	if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+	    !rx->key->force_sw_encrypt) {
+		if (rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
+			if (skb->len < MICHAEL_MIC_LEN)
+				return TXRX_DROP;
+		}
+		/* Need to verify Michael MIC sometimes in software even when
+		 * hwaccel is used. Atheros ar5212: fragmented frames and QoS
+		 * frames. */
+		if (!rx->fragmented && !wpa_test)
+			goto remove_mic;
+	}
+
+	if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len)
+	    || data_len < MICHAEL_MIC_LEN)
+		return TXRX_DROP;
+
+	data_len -= MICHAEL_MIC_LEN;
+
+#if 0
+	authenticator = fc & IEEE80211_FCTL_TODS; /* FIX */
+#else
+	authenticator = 1;
+#endif
+	key = &rx->key->key[authenticator ? ALG_TKIP_TEMP_AUTH_RX_MIC_KEY :
+			    ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
+	michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+	if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
+		if (!rx->u.rx.ra_match)
+			return TXRX_DROP;
+
+		printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
+		       MAC_FMT "\n", rx->dev->name, MAC_ARG(sa));
+
+		do {
+			struct ieee80211_hdr *hdr;
+			union iwreq_data wrqu;
+			char *buf = kmalloc(128, GFP_ATOMIC);
+			if (!buf)
+				break;
+
+			/* TODO: needed parameters: count, key type, TSC */
+			hdr = (struct ieee80211_hdr *) skb->data;
+			sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+				"keyid=%d %scast addr=" MAC_FMT ")",
+				rx->key->keyidx,
+				hdr->addr1[0] & 0x01 ? "broad" : "uni",
+				MAC_ARG(hdr->addr2));
+			memset(&wrqu, 0, sizeof(wrqu));
+			wrqu.data.length = strlen(buf);
+			wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
+			kfree(buf);
+		} while (0);
+
+		if (!rx->local->apdev)
+			return TXRX_DROP;
+
+		ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+				  ieee80211_msg_michael_mic_failure);
+
+		return TXRX_QUEUED;
+	}
+
+ remove_mic:
+	/* remove Michael MIC from payload */
+	skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
+
+	return TXRX_CONTINUE;
+}
+
+
+static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
+			    struct sk_buff *skb, int test)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_key *key = tx->key;
+	int hdrlen, len, tailneed;
+	u16 fc;
+	u8 *pos;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+	len = skb->len - hdrlen;
+
+	tailneed = !tx->key->force_sw_encrypt ? 0 : TKIP_ICV_LEN;
+	if ((skb_headroom(skb) < TKIP_IV_LEN ||
+	     skb_tailroom(skb) < tailneed)) {
+		I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+		if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN, tailneed,
+					      GFP_ATOMIC)))
+			return -1;
+	}
+
+	pos = skb_push(skb, TKIP_IV_LEN);
+	memmove(pos, pos + TKIP_IV_LEN, hdrlen);
+	pos += hdrlen;
+
+	/* Increase IV for the frame */
+	key->u.tkip.iv16++;
+	if (key->u.tkip.iv16 == 0)
+		key->u.tkip.iv32++;
+
+	if (!tx->key->force_sw_encrypt) {
+		u32 flags = tx->local->hw.flags;
+		hdr = (struct ieee80211_hdr *)skb->data;
+
+		/* hwaccel - with preallocated room for IV */
+		ieee80211_tkip_add_iv(pos, key,
+				      (u8) (key->u.tkip.iv16 >> 8),
+				      (u8) (((key->u.tkip.iv16 >> 8) | 0x20) &
+					    0x7f),
+				      (u8) key->u.tkip.iv16);
+
+		if (flags & IEEE80211_HW_TKIP_REQ_PHASE2_KEY)
+			ieee80211_tkip_gen_rc4key(key, hdr->addr2,
+						  tx->u.tx.control->tkip_key);
+		else if (flags & IEEE80211_HW_TKIP_REQ_PHASE1_KEY) {
+			if (key->u.tkip.iv16 == 0 ||
+			    !key->u.tkip.tx_initialized) {
+				ieee80211_tkip_gen_phase1key(key, hdr->addr2,
+					    (u16 *)tx->u.tx.control->tkip_key);
+				key->u.tkip.tx_initialized = 1;
+				tx->u.tx.control->flags |=
+					    IEEE80211_TXCTL_TKIP_NEW_PHASE1_KEY;
+			} else
+				tx->u.tx.control->flags &=
+					    ~IEEE80211_TXCTL_TKIP_NEW_PHASE1_KEY;
+		}
+
+		tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+		return 0;
+	}
+
+	/* Add room for ICV */
+	skb_put(skb, TKIP_ICV_LEN);
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm,
+				    key, pos, len, hdr->addr2);
+	return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_tkip_encrypt(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+	u16 fc;
+	struct ieee80211_key *key = tx->key;
+	struct sk_buff *skb = tx->skb;
+	int wpa_test = 0, test = 0;
+
+	fc = le16_to_cpu(hdr->frame_control);
+
+	if (!key || key->alg != ALG_TKIP || !WLAN_FC_DATA_PRESENT(fc))
+		return TXRX_CONTINUE;
+
+	tx->u.tx.control->icv_len = TKIP_ICV_LEN;
+	tx->u.tx.control->iv_len = TKIP_IV_LEN;
+	ieee80211_tx_set_iswep(tx);
+
+	if (!tx->key->force_sw_encrypt &&
+	    !(tx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
+	    !wpa_test) {
+		/* hwaccel - with no need for preallocated room for IV/ICV */
+		tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+		return TXRX_CONTINUE;
+	}
+
+	if (tkip_encrypt_skb(tx, skb, test) < 0)
+		return TXRX_DROP;
+
+	if (tx->u.tx.extra_frag) {
+		int i;
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+			    < 0)
+				return TXRX_DROP;
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_tkip_decrypt(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+	u16 fc;
+	int hdrlen, res, hwaccel = 0, wpa_test = 0;
+	struct ieee80211_key *key = rx->key;
+	struct sk_buff *skb = rx->skb;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	if (!rx->key || rx->key->alg != ALG_TKIP ||
+	    !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+	    (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+		return TXRX_CONTINUE;
+
+	if (!rx->sta || skb->len - hdrlen < 12)
+		return TXRX_DROP;
+
+	if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+	    !rx->key->force_sw_encrypt) {
+		if (!(rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV)) {
+			/* Hardware takes care of all processing, including
+			 * replay protection, so no need to continue here. */
+			return TXRX_CONTINUE;
+		}
+
+		/* let TKIP code verify IV, but skip decryption */
+		hwaccel = 1;
+	}
+
+	res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm,
+					  key, skb->data + hdrlen,
+					  skb->len - hdrlen, rx->sta->addr,
+					  hwaccel, rx->u.rx.queue);
+	if (res != TKIP_DECRYPT_OK || wpa_test) {
+		printk(KERN_DEBUG "%s: TKIP decrypt failed for RX frame from "
+		       MAC_FMT " (res=%d)\n",
+		       rx->dev->name, MAC_ARG(rx->sta->addr), res);
+		return TXRX_DROP;
+	}
+
+	/* Trim ICV */
+	skb_trim(skb, skb->len - TKIP_ICV_LEN);
+
+	/* Remove IV */
+	memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
+	skb_pull(skb, TKIP_IV_LEN);
+
+	return TXRX_CONTINUE;
+}
+
+
+static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
+				int encrypted)
+{
+	u16 fc;
+	int a4_included, qos_included;
+	u8 qos_tid, *fc_pos, *data, *sa, *da;
+	int len_a;
+	size_t data_len;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+
+	fc_pos = (u8 *) &hdr->frame_control;
+	fc = fc_pos[0] ^ (fc_pos[1] << 8);
+	a4_included = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+		(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
+
+	ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len);
+	data_len -= CCMP_HDR_LEN + (encrypted ? CCMP_MIC_LEN : 0);
+	if (qos_tid & 0x80) {
+		qos_included = 1;
+		qos_tid &= 0x0f;
+	} else
+		qos_included = 0;
+	/* First block, b_0 */
+
+	b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
+	/* Nonce: QoS Priority | A2 | PN */
+	b_0[1] = qos_tid;
+	memcpy(&b_0[2], hdr->addr2, 6);
+	memcpy(&b_0[8], pn, CCMP_PN_LEN);
+	/* l(m) */
+	b_0[14] = (data_len >> 8) & 0xff;
+	b_0[15] = data_len & 0xff;
+
+
+	/* AAD (extra authenticate-only data) / masked 802.11 header
+	 * FC | A1 | A2 | A3 | SC | [A4] | [QC] */
+
+	len_a = a4_included ? 28 : 22;
+	if (qos_included)
+		len_a += 2;
+
+	aad[0] = 0; /* (len_a >> 8) & 0xff; */
+	aad[1] = len_a & 0xff;
+	/* Mask FC: zero subtype b4 b5 b6 */
+	aad[2] = fc_pos[0] & ~(BIT(4) | BIT(5) | BIT(6));
+	/* Retry, PwrMgt, MoreData; set Protected */
+	aad[3] = (fc_pos[1] & ~(BIT(3) | BIT(4) | BIT(5))) | BIT(6);
+	memcpy(&aad[4], &hdr->addr1, 18);
+
+	/* Mask Seq#, leave Frag# */
+	aad[22] = *((u8 *) &hdr->seq_ctrl) & 0x0f;
+	aad[23] = 0;
+	if (a4_included) {
+		memcpy(&aad[24], hdr->addr4, 6);
+		aad[30] = 0;
+		aad[31] = 0;
+	} else
+		memset(&aad[24], 0, 8);
+	if (qos_included) {
+		u8 *dpos = &aad[a4_included ? 30 : 24];
+
+		/* Mask QoS Control field */
+		dpos[0] = qos_tid;
+		dpos[1] = 0;
+	}
+}
+
+
+static inline void ccmp_pn2hdr(u8 *hdr, u8 *pn, int key_id)
+{
+	hdr[0] = pn[5];
+	hdr[1] = pn[4];
+	hdr[2] = 0;
+	hdr[3] = 0x20 | (key_id << 6);
+	hdr[4] = pn[3];
+	hdr[5] = pn[2];
+	hdr[6] = pn[1];
+	hdr[7] = pn[0];
+}
+
+
+static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
+{
+	pn[0] = hdr[7];
+	pn[1] = hdr[6];
+	pn[2] = hdr[5];
+	pn[3] = hdr[4];
+	pn[4] = hdr[1];
+	pn[5] = hdr[0];
+	return (hdr[3] >> 6) & 0x03;
+}
+
+
+static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
+			    struct sk_buff *skb, int test)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_key *key = tx->key;
+	int hdrlen, len, tailneed;
+	u16 fc;
+	u8 *pos, *pn, *b_0, *aad, *scratch;
+	int i;
+
+	scratch = key->u.ccmp.tx_crypto_buf;
+	b_0 = scratch + 3 * AES_BLOCK_LEN;
+	aad = scratch + 4 * AES_BLOCK_LEN;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+	len = skb->len - hdrlen;
+
+	tailneed = !key->force_sw_encrypt ? 0 : CCMP_MIC_LEN;
+
+	if ((skb_headroom(skb) < CCMP_HDR_LEN ||
+	     skb_tailroom(skb) < tailneed)) {
+		I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+		if (unlikely(pskb_expand_head(skb, CCMP_HDR_LEN, tailneed,
+					      GFP_ATOMIC)))
+			return -1;
+	}
+
+	pos = skb_push(skb, CCMP_HDR_LEN);
+	memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
+	hdr = (struct ieee80211_hdr *) pos;
+	pos += hdrlen;
+
+	/* PN = PN + 1 */
+	pn = key->u.ccmp.tx_pn;
+
+	for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+		pn[i]++;
+		if (pn[i])
+			break;
+	}
+
+	ccmp_pn2hdr(pos, pn, key->keyidx);
+
+	if (!key->force_sw_encrypt) {
+		/* hwaccel - with preallocated room for CCMP header */
+		tx->u.tx.control->key_idx = key->hw_key_idx;
+		return 0;
+	}
+
+	pos += CCMP_HDR_LEN;
+	ccmp_special_blocks(skb, pn, b_0, aad, 0);
+	ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, b_0, aad, pos, len,
+				  pos, skb_put(skb, CCMP_MIC_LEN));
+
+	return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_ccmp_encrypt(struct ieee80211_txrx_data *tx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+	struct ieee80211_key *key = tx->key;
+	u16 fc;
+	struct sk_buff *skb = tx->skb;
+	int test = 0;
+
+	fc = le16_to_cpu(hdr->frame_control);
+
+	if (!key || key->alg != ALG_CCMP || !WLAN_FC_DATA_PRESENT(fc))
+		return TXRX_CONTINUE;
+
+	tx->u.tx.control->icv_len = CCMP_MIC_LEN;
+	tx->u.tx.control->iv_len = CCMP_HDR_LEN;
+	ieee80211_tx_set_iswep(tx);
+
+	if (!tx->key->force_sw_encrypt &&
+	    !(tx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV)) {
+		/* hwaccel - with no need for preallocated room for CCMP "
+		 * header or MIC fields */
+		tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+		return TXRX_CONTINUE;
+	}
+
+	if (ccmp_encrypt_skb(tx, skb, test) < 0)
+		return TXRX_DROP;
+
+	if (tx->u.tx.extra_frag) {
+		int i;
+
+		for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+			if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+			    < 0)
+				return TXRX_DROP;
+		}
+	}
+
+	return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_ccmp_decrypt(struct ieee80211_txrx_data *rx)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+	u16 fc;
+	int hdrlen;
+	struct ieee80211_key *key = rx->key;
+	struct sk_buff *skb = rx->skb;
+	u8 pn[CCMP_PN_LEN];
+	int data_len;
+
+	fc = le16_to_cpu(hdr->frame_control);
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	if (!key || key->alg != ALG_CCMP ||
+	    !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+	    (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+		return TXRX_CONTINUE;
+
+	data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
+	if (!rx->sta || data_len < 0)
+		return TXRX_DROP;
+
+	if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+	    !key->force_sw_encrypt &&
+	    !(rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV))
+		return TXRX_CONTINUE;
+
+	(void) ccmp_hdr2pn(pn, skb->data + hdrlen);
+
+	if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) {
+#ifdef CONFIG_MAC80211_DEBUG
+		u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue];
+		printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from "
+		       MAC_FMT " (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN "
+		       "%02x%02x%02x%02x%02x%02x)\n", rx->dev->name,
+		       MAC_ARG(rx->sta->addr),
+		       pn[0], pn[1], pn[2], pn[3], pn[4], pn[5],
+		       ppn[0], ppn[1], ppn[2], ppn[3], ppn[4], ppn[5]);
+#endif /* CONFIG_MAC80211_DEBUG */
+		key->u.ccmp.replays++;
+		return TXRX_DROP;
+	}
+
+	if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+	    !key->force_sw_encrypt) {
+		/* hwaccel has already decrypted frame and verified MIC */
+	} else {
+		u8 *scratch, *b_0, *aad;
+
+		scratch = key->u.ccmp.rx_crypto_buf;
+		b_0 = scratch + 3 * AES_BLOCK_LEN;
+		aad = scratch + 4 * AES_BLOCK_LEN;
+
+		ccmp_special_blocks(skb, pn, b_0, aad, 1);
+
+		if (ieee80211_aes_ccm_decrypt(
+			    key->u.ccmp.tfm, scratch, b_0, aad,
+			    skb->data + hdrlen + CCMP_HDR_LEN, data_len,
+			    skb->data + skb->len - CCMP_MIC_LEN,
+			    skb->data + hdrlen + CCMP_HDR_LEN)) {
+			printk(KERN_DEBUG "%s: CCMP decrypt failed for RX "
+			       "frame from " MAC_FMT "\n", rx->dev->name,
+			       MAC_ARG(rx->sta->addr));
+			return TXRX_DROP;
+		}
+	}
+
+	memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN);
+
+	/* Remove CCMP header and MIC */
+	skb_trim(skb, skb->len - CCMP_MIC_LEN);
+	memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
+	skb_pull(skb, CCMP_HDR_LEN);
+
+	return TXRX_CONTINUE;
+}
+
diff --git a/net/mac80211/wpa.h b/net/mac80211/wpa.h
new file mode 100644
index 0000000..da3b959
--- /dev/null
+++ b/net/mac80211/wpa.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef WPA_H
+#define WPA_H
+
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include "ieee80211_i.h"
+
+ieee80211_txrx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_tx_h_tkip_encrypt(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_tkip_decrypt(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_tx_h_ccmp_encrypt(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_ccmp_decrypt(struct ieee80211_txrx_data *rx);
+
+#endif /* WPA_H */