Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

12 files changed, 3029 insertions, 2865 deletions

diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index a169b0201d6..2dc8f2bff27 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -7,6 +7,8 @@ mac80211-y := \
 	sta_info.o \
 	wep.o \
 	wpa.o \
+	scan.o \
+	ht.o \
 	mlme.o \
 	iface.o \
 	rate.o \
@@ -15,6 +17,7 @@ mac80211-y := \
 	aes_ccm.o \
 	cfg.o \
 	rx.o \
+	spectmgmt.o \
 	tx.o \
 	key.o \
 	util.o \
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
new file mode 100644
index 00000000000..4dc35c9dabc
--- /dev/null
+++ b/net/mac80211/ht.c
@@ -0,0 +1,992 @@
+/*
+ * HT handling
+ *
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ * Copyright 2007-2008, Intel Corporation
+ *
+ * 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/ieee80211.h>
+#include <net/wireless.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "wme.h"
+
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+				   struct ieee80211_ht_info *ht_info)
+{
+
+	if (ht_info == NULL)
+		return -EINVAL;
+
+	memset(ht_info, 0, sizeof(*ht_info));
+
+	if (ht_cap_ie) {
+		u8 ampdu_info = ht_cap_ie->ampdu_params_info;
+
+		ht_info->ht_supported = 1;
+		ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
+		ht_info->ampdu_factor =
+			ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
+		ht_info->ampdu_density =
+			(ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
+		memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
+	} else
+		ht_info->ht_supported = 0;
+
+	return 0;
+}
+
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+			struct ieee80211_ht_addt_info *ht_add_info_ie,
+			struct ieee80211_ht_bss_info *bss_info)
+{
+	if (bss_info == NULL)
+		return -EINVAL;
+
+	memset(bss_info, 0, sizeof(*bss_info));
+
+	if (ht_add_info_ie) {
+		u16 op_mode;
+		op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
+
+		bss_info->primary_channel = ht_add_info_ie->control_chan;
+		bss_info->bss_cap = ht_add_info_ie->ht_param;
+		bss_info->bss_op_mode = (u8)(op_mode & 0xff);
+	}
+
+	return 0;
+}
+
+static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
+					 const u8 *da, u16 tid,
+					 u8 dialog_token, u16 start_seq_num,
+					 u16 agg_size, u16 timeout)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u16 capab;
+
+	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+
+	if (!skb) {
+		printk(KERN_ERR "%s: failed to allocate buffer "
+				"for addba request frame\n", sdata->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, da, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
+	else
+		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_ACTION);
+
+	skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
+
+	mgmt->u.action.category = WLAN_CATEGORY_BACK;
+	mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
+
+	mgmt->u.action.u.addba_req.dialog_token = dialog_token;
+	capab = (u16)(1 << 1);		/* bit 1 aggregation policy */
+	capab |= (u16)(tid << 2); 	/* bit 5:2 TID number */
+	capab |= (u16)(agg_size << 6);	/* bit 15:6 max size of aggergation */
+
+	mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
+
+	mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
+	mgmt->u.action.u.addba_req.start_seq_num =
+					cpu_to_le16(start_seq_num << 4);
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
+				      u8 dialog_token, u16 status, u16 policy,
+				      u16 buf_size, u16 timeout)
+{
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct ieee80211_local *local = sdata->local;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u16 capab;
+
+	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer "
+		       "for addba resp frame\n", sdata->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, da, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
+	else
+		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_ACTION);
+
+	skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
+	mgmt->u.action.category = WLAN_CATEGORY_BACK;
+	mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
+	mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
+
+	capab = (u16)(policy << 1);	/* bit 1 aggregation policy */
+	capab |= (u16)(tid << 2); 	/* bit 5:2 TID number */
+	capab |= (u16)(buf_size << 6);	/* bit 15:6 max size of aggregation */
+
+	mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
+	mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
+	mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+static void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
+				 const u8 *da, u16 tid,
+				 u16 initiator, u16 reason_code)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u16 params;
+
+	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+
+	if (!skb) {
+		printk(KERN_ERR "%s: failed to allocate buffer "
+					"for delba frame\n", sdata->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, da, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
+	else
+		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_ACTION);
+
+	skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
+
+	mgmt->u.action.category = WLAN_CATEGORY_BACK;
+	mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
+	params = (u16)(initiator << 11); 	/* bit 11 initiator */
+	params |= (u16)(tid << 12); 		/* bit 15:12 TID number */
+
+	mgmt->u.action.u.delba.params = cpu_to_le16(params);
+	mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct sk_buff *skb;
+	struct ieee80211_bar *bar;
+	u16 bar_control = 0;
+
+	skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom);
+	if (!skb) {
+		printk(KERN_ERR "%s: failed to allocate buffer for "
+			"bar frame\n", sdata->dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar));
+	memset(bar, 0, sizeof(*bar));
+	bar->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
+					 IEEE80211_STYPE_BACK_REQ);
+	memcpy(bar->ra, ra, ETH_ALEN);
+	memcpy(bar->ta, sdata->dev->dev_addr, ETH_ALEN);
+	bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
+	bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
+	bar_control |= (u16)(tid << 12);
+	bar->control = cpu_to_le16(bar_control);
+	bar->start_seq_num = cpu_to_le16(ssn);
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid,
+					u16 initiator, u16 reason)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_hw *hw = &local->hw;
+	struct sta_info *sta;
+	int ret, i;
+	DECLARE_MAC_BUF(mac);
+
+	rcu_read_lock();
+
+	sta = sta_info_get(local, ra);
+	if (!sta) {
+		rcu_read_unlock();
+		return;
+	}
+
+	/* check if TID is in operational state */
+	spin_lock_bh(&sta->lock);
+	if (sta->ampdu_mlme.tid_state_rx[tid]
+				!= HT_AGG_STATE_OPERATIONAL) {
+		spin_unlock_bh(&sta->lock);
+		rcu_read_unlock();
+		return;
+	}
+	sta->ampdu_mlme.tid_state_rx[tid] =
+		HT_AGG_STATE_REQ_STOP_BA_MSK |
+		(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+	spin_unlock_bh(&sta->lock);
+
+	/* stop HW Rx aggregation. ampdu_action existence
+	 * already verified in session init so we add the BUG_ON */
+	BUG_ON(!local->ops->ampdu_action);
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
+				print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
+					ra, tid, NULL);
+	if (ret)
+		printk(KERN_DEBUG "HW problem - can not stop rx "
+				"aggregation for tid %d\n", tid);
+
+	/* shutdown timer has not expired */
+	if (initiator != WLAN_BACK_TIMER)
+		del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+	/* check if this is a self generated aggregation halt */
+	if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
+		ieee80211_send_delba(sdata, ra, tid, 0, reason);
+
+	/* free the reordering buffer */
+	for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
+		if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
+			/* release the reordered frames */
+			dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
+			sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
+			sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
+		}
+	}
+	/* free resources */
+	kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
+	kfree(sta->ampdu_mlme.tid_rx[tid]);
+	sta->ampdu_mlme.tid_rx[tid] = NULL;
+	sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
+
+	rcu_read_unlock();
+}
+
+
+/*
+ * After sending add Block Ack request we activated a timer until
+ * add Block Ack response will arrive from the recipient.
+ * If this timer expires sta_addba_resp_timer_expired will be executed.
+ */
+static void sta_addba_resp_timer_expired(unsigned long data)
+{
+	/* not an elegant detour, but there is no choice as the timer passes
+	 * only one argument, and both sta_info and TID are needed, so init
+	 * flow in sta_info_create gives the TID as data, while the timer_to_id
+	 * array gives the sta through container_of */
+	u16 tid = *(u8 *)data;
+	struct sta_info *temp_sta = container_of((void *)data,
+		struct sta_info, timer_to_tid[tid]);
+
+	struct ieee80211_local *local = temp_sta->local;
+	struct ieee80211_hw *hw = &local->hw;
+	struct sta_info *sta;
+	u8 *state;
+
+	rcu_read_lock();
+
+	sta = sta_info_get(local, temp_sta->addr);
+	if (!sta) {
+		rcu_read_unlock();
+		return;
+	}
+
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+	/* check if the TID waits for addBA response */
+	spin_lock_bh(&sta->lock);
+	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+		spin_unlock_bh(&sta->lock);
+		*state = HT_AGG_STATE_IDLE;
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "timer expired on tid %d but we are not "
+				"expecting addBA response there", tid);
+#endif
+		goto timer_expired_exit;
+	}
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
+#endif
+
+	/* go through the state check in stop_BA_session */
+	*state = HT_AGG_STATE_OPERATIONAL;
+	spin_unlock_bh(&sta->lock);
+	ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
+				     WLAN_BACK_INITIATOR);
+
+timer_expired_exit:
+	rcu_read_unlock();
+}
+
+void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr)
+{
+	struct ieee80211_local *local = sdata->local;
+	int i;
+
+	for (i = 0; i <  STA_TID_NUM; i++) {
+		ieee80211_stop_tx_ba_session(&local->hw, addr, i,
+					     WLAN_BACK_INITIATOR);
+		ieee80211_sta_stop_rx_ba_session(sdata, addr, i,
+						 WLAN_BACK_RECIPIENT,
+						 WLAN_REASON_QSTA_LEAVE_QBSS);
+	}
+}
+
+int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *sdata;
+	u16 start_seq_num;
+	u8 *state;
+	int ret;
+	DECLARE_MAC_BUF(mac);
+
+	if (tid >= STA_TID_NUM)
+		return -EINVAL;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
+				print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	rcu_read_lock();
+
+	sta = sta_info_get(local, ra);
+	if (!sta) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Could not find the station\n");
+#endif
+		ret = -ENOENT;
+		goto exit;
+	}
+
+	spin_lock_bh(&sta->lock);
+
+	/* we have tried too many times, receiver does not want A-MPDU */
+	if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
+		ret = -EBUSY;
+		goto err_unlock_sta;
+	}
+
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+	/* check if the TID is not in aggregation flow already */
+	if (*state != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "BA request denied - session is not "
+				 "idle on tid %u\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		ret = -EAGAIN;
+		goto err_unlock_sta;
+	}
+
+	/* prepare A-MPDU MLME for Tx aggregation */
+	sta->ampdu_mlme.tid_tx[tid] =
+			kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
+	if (!sta->ampdu_mlme.tid_tx[tid]) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
+					tid);
+#endif
+		ret = -ENOMEM;
+		goto err_unlock_sta;
+	}
+	/* Tx timer */
+	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
+			sta_addba_resp_timer_expired;
+	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
+			(unsigned long)&sta->timer_to_tid[tid];
+	init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+
+	/* create a new queue for this aggregation */
+	ret = ieee80211_ht_agg_queue_add(local, sta, tid);
+
+	/* case no queue is available to aggregation
+	 * don't switch to aggregation */
+	if (ret) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "BA request denied - queue unavailable for"
+					" tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		goto err_unlock_queue;
+	}
+	sdata = sta->sdata;
+
+	/* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
+	 * call back right away, it must see that the flow has begun */
+	*state |= HT_ADDBA_REQUESTED_MSK;
+
+	/* This is slightly racy because the queue isn't stopped */
+	start_seq_num = sta->tid_seq[tid];
+
+	if (local->ops->ampdu_action)
+		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
+						ra, tid, &start_seq_num);
+
+	if (ret) {
+		/* No need to requeue the packets in the agg queue, since we
+		 * held the tx lock: no packet could be enqueued to the newly
+		 * allocated queue */
+		ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "BA request denied - HW unavailable for"
+					" tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		*state = HT_AGG_STATE_IDLE;
+		goto err_unlock_queue;
+	}
+
+	/* Will put all the packets in the new SW queue */
+	ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
+	spin_unlock_bh(&sta->lock);
+
+	/* send an addBA request */
+	sta->ampdu_mlme.dialog_token_allocator++;
+	sta->ampdu_mlme.tid_tx[tid]->dialog_token =
+			sta->ampdu_mlme.dialog_token_allocator;
+	sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
+
+
+	ieee80211_send_addba_request(sta->sdata, ra, tid,
+			 sta->ampdu_mlme.tid_tx[tid]->dialog_token,
+			 sta->ampdu_mlme.tid_tx[tid]->ssn,
+			 0x40, 5000);
+	/* activate the timer for the recipient's addBA response */
+	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
+				jiffies + ADDBA_RESP_INTERVAL;
+	add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
+#endif
+	goto exit;
+
+err_unlock_queue:
+	kfree(sta->ampdu_mlme.tid_tx[tid]);
+	sta->ampdu_mlme.tid_tx[tid] = NULL;
+	ret = -EBUSY;
+err_unlock_sta:
+	spin_unlock_bh(&sta->lock);
+exit:
+	rcu_read_unlock();
+	return ret;
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
+
+int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
+				 u8 *ra, u16 tid,
+				 enum ieee80211_back_parties initiator)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sta_info *sta;
+	u8 *state;
+	int ret = 0;
+	DECLARE_MAC_BUF(mac);
+
+	if (tid >= STA_TID_NUM)
+		return -EINVAL;
+
+	rcu_read_lock();
+	sta = sta_info_get(local, ra);
+	if (!sta) {
+		rcu_read_unlock();
+		return -ENOENT;
+	}
+
+	/* check if the TID is in aggregation */
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+	spin_lock_bh(&sta->lock);
+
+	if (*state != HT_AGG_STATE_OPERATIONAL) {
+		ret = -ENOENT;
+		goto stop_BA_exit;
+	}
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
+				print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
+
+	*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
+		(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+
+	if (local->ops->ampdu_action)
+		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
+						ra, tid, NULL);
+
+	/* case HW denied going back to legacy */
+	if (ret) {
+		WARN_ON(ret != -EBUSY);
+		*state = HT_AGG_STATE_OPERATIONAL;
+		ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+		goto stop_BA_exit;
+	}
+
+stop_BA_exit:
+	spin_unlock_bh(&sta->lock);
+	rcu_read_unlock();
+	return ret;
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
+
+void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sta_info *sta;
+	u8 *state;
+	DECLARE_MAC_BUF(mac);
+
+	if (tid >= STA_TID_NUM) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+				tid, STA_TID_NUM);
+#endif
+		return;
+	}
+
+	rcu_read_lock();
+	sta = sta_info_get(local, ra);
+	if (!sta) {
+		rcu_read_unlock();
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Could not find station: %s\n",
+				print_mac(mac, ra));
+#endif
+		return;
+	}
+
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+	spin_lock_bh(&sta->lock);
+
+	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
+				*state);
+#endif
+		spin_unlock_bh(&sta->lock);
+		rcu_read_unlock();
+		return;
+	}
+
+	WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
+
+	*state |= HT_ADDBA_DRV_READY_MSK;
+
+	if (*state == HT_AGG_STATE_OPERATIONAL) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
+#endif
+		ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+	}
+	spin_unlock_bh(&sta->lock);
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
+
+void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct sta_info *sta;
+	u8 *state;
+	int agg_queue;
+	DECLARE_MAC_BUF(mac);
+
+	if (tid >= STA_TID_NUM) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+				tid, STA_TID_NUM);
+#endif
+		return;
+	}
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
+				print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	rcu_read_lock();
+	sta = sta_info_get(local, ra);
+	if (!sta) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "Could not find station: %s\n",
+				print_mac(mac, ra));
+#endif
+		rcu_read_unlock();
+		return;
+	}
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+	/* NOTE: no need to use sta->lock in this state check, as
+	 * ieee80211_stop_tx_ba_session will let only one stop call to
+	 * pass through per sta/tid
+	 */
+	if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
+#endif
+		rcu_read_unlock();
+		return;
+	}
+
+	if (*state & HT_AGG_STATE_INITIATOR_MSK)
+		ieee80211_send_delba(sta->sdata, ra, tid,
+			WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
+
+	agg_queue = sta->tid_to_tx_q[tid];
+
+	ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
+
+	/* We just requeued the all the frames that were in the
+	 * removed queue, and since we might miss a softirq we do
+	 * netif_schedule_queue.  ieee80211_wake_queue is not used
+	 * here as this queue is not necessarily stopped
+	 */
+	netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue));
+	spin_lock_bh(&sta->lock);
+	*state = HT_AGG_STATE_IDLE;
+	sta->ampdu_mlme.addba_req_num[tid] = 0;
+	kfree(sta->ampdu_mlme.tid_tx[tid]);
+	sta->ampdu_mlme.tid_tx[tid] = NULL;
+	spin_unlock_bh(&sta->lock);
+
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
+
+void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+				      const u8 *ra, u16 tid)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_ra_tid *ra_tid;
+	struct sk_buff *skb = dev_alloc_skb(0);
+
+	if (unlikely(!skb)) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_WARNING "%s: Not enough memory, "
+			       "dropping start BA session", skb->dev->name);
+#endif
+		return;
+	}
+	ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+	memcpy(&ra_tid->ra, ra, ETH_ALEN);
+	ra_tid->tid = tid;
+
+	skb->pkt_type = IEEE80211_ADDBA_MSG;
+	skb_queue_tail(&local->skb_queue, skb);
+	tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
+
+void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+				     const u8 *ra, u16 tid)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_ra_tid *ra_tid;
+	struct sk_buff *skb = dev_alloc_skb(0);
+
+	if (unlikely(!skb)) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_WARNING "%s: Not enough memory, "
+			       "dropping stop BA session", skb->dev->name);
+#endif
+		return;
+	}
+	ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+	memcpy(&ra_tid->ra, ra, ETH_ALEN);
+	ra_tid->tid = tid;
+
+	skb->pkt_type = IEEE80211_DELBA_MSG;
+	skb_queue_tail(&local->skb_queue, skb);
+	tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
+
+/*
+ * After accepting the AddBA Request we activated a timer,
+ * resetting it after each frame that arrives from the originator.
+ * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
+ */
+static void sta_rx_agg_session_timer_expired(unsigned long data)
+{
+	/* not an elegant detour, but there is no choice as the timer passes
+	 * only one argument, and various sta_info are needed here, so init
+	 * flow in sta_info_create gives the TID as data, while the timer_to_id
+	 * array gives the sta through container_of */
+	u8 *ptid = (u8 *)data;
+	u8 *timer_to_id = ptid - *ptid;
+	struct sta_info *sta = container_of(timer_to_id, struct sta_info,
+					 timer_to_tid[0]);
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
+#endif
+	ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr,
+					 (u16)*ptid, WLAN_BACK_TIMER,
+					 WLAN_REASON_QSTA_TIMEOUT);
+}
+
+void ieee80211_process_addba_request(struct ieee80211_local *local,
+				     struct sta_info *sta,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len)
+{
+	struct ieee80211_hw *hw = &local->hw;
+	struct ieee80211_conf *conf = &hw->conf;
+	struct tid_ampdu_rx *tid_agg_rx;
+	u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
+	u8 dialog_token;
+	int ret = -EOPNOTSUPP;
+	DECLARE_MAC_BUF(mac);
+
+	/* extract session parameters from addba request frame */
+	dialog_token = mgmt->u.action.u.addba_req.dialog_token;
+	timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
+	start_seq_num =
+		le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
+
+	capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+	ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
+	tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+	buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
+
+	status = WLAN_STATUS_REQUEST_DECLINED;
+
+	/* sanity check for incoming parameters:
+	 * check if configuration can support the BA policy
+	 * and if buffer size does not exceeds max value */
+	if (((ba_policy != 1)
+		&& (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
+		|| (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
+		status = WLAN_STATUS_INVALID_QOS_PARAM;
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_DEBUG "AddBA Req with bad params from "
+				"%s on tid %u. policy %d, buffer size %d\n",
+				print_mac(mac, mgmt->sa), tid, ba_policy,
+				buf_size);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		goto end_no_lock;
+	}
+	/* determine default buffer size */
+	if (buf_size == 0) {
+		struct ieee80211_supported_band *sband;
+
+		sband = local->hw.wiphy->bands[conf->channel->band];
+		buf_size = IEEE80211_MIN_AMPDU_BUF;
+		buf_size = buf_size << sband->ht_info.ampdu_factor;
+	}
+
+
+	/* examine state machine */
+	spin_lock_bh(&sta->lock);
+
+	if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_DEBUG "unexpected AddBA Req from "
+				"%s on tid %u\n",
+				print_mac(mac, mgmt->sa), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		goto end;
+	}
+
+	/* prepare A-MPDU MLME for Rx aggregation */
+	sta->ampdu_mlme.tid_rx[tid] =
+			kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
+	if (!sta->ampdu_mlme.tid_rx[tid]) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
+					tid);
+#endif
+		goto end;
+	}
+	/* rx timer */
+	sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
+				sta_rx_agg_session_timer_expired;
+	sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
+				(unsigned long)&sta->timer_to_tid[tid];
+	init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+	tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
+	/* prepare reordering buffer */
+	tid_agg_rx->reorder_buf =
+		kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC);
+	if (!tid_agg_rx->reorder_buf) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		if (net_ratelimit())
+			printk(KERN_ERR "can not allocate reordering buffer "
+			       "to tid %d\n", tid);
+#endif
+		kfree(sta->ampdu_mlme.tid_rx[tid]);
+		goto end;
+	}
+	memset(tid_agg_rx->reorder_buf, 0,
+		buf_size * sizeof(struct sk_buff *));
+
+	if (local->ops->ampdu_action)
+		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
+					       sta->addr, tid, &start_seq_num);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	if (ret) {
+		kfree(tid_agg_rx->reorder_buf);
+		kfree(tid_agg_rx);
+		sta->ampdu_mlme.tid_rx[tid] = NULL;
+		goto end;
+	}
+
+	/* change state and send addba resp */
+	sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
+	tid_agg_rx->dialog_token = dialog_token;
+	tid_agg_rx->ssn = start_seq_num;
+	tid_agg_rx->head_seq_num = start_seq_num;
+	tid_agg_rx->buf_size = buf_size;
+	tid_agg_rx->timeout = timeout;
+	tid_agg_rx->stored_mpdu_num = 0;
+	status = WLAN_STATUS_SUCCESS;
+end:
+	spin_unlock_bh(&sta->lock);
+
+end_no_lock:
+	ieee80211_send_addba_resp(sta->sdata, sta->addr, tid,
+				  dialog_token, status, 1, buf_size, timeout);
+}
+
+void ieee80211_process_addba_resp(struct ieee80211_local *local,
+				  struct sta_info *sta,
+				  struct ieee80211_mgmt *mgmt,
+				  size_t len)
+{
+	struct ieee80211_hw *hw = &local->hw;
+	u16 capab;
+	u16 tid;
+	u8 *state;
+
+	capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
+	tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+
+	state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+	spin_lock_bh(&sta->lock);
+
+	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+		spin_unlock_bh(&sta->lock);
+		return;
+	}
+
+	if (mgmt->u.action.u.addba_resp.dialog_token !=
+		sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
+		spin_unlock_bh(&sta->lock);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+		return;
+	}
+
+	del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+	if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
+			== WLAN_STATUS_SUCCESS) {
+		*state |= HT_ADDBA_RECEIVED_MSK;
+		sta->ampdu_mlme.addba_req_num[tid] = 0;
+
+		if (*state == HT_AGG_STATE_OPERATIONAL)
+			ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+
+		spin_unlock_bh(&sta->lock);
+	} else {
+		sta->ampdu_mlme.addba_req_num[tid]++;
+		/* this will allow the state check in stop_BA_session */
+		*state = HT_AGG_STATE_OPERATIONAL;
+		spin_unlock_bh(&sta->lock);
+		ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
+					     WLAN_BACK_INITIATOR);
+	}
+}
+
+void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
+			     struct sta_info *sta,
+			     struct ieee80211_mgmt *mgmt, size_t len)
+{
+	struct ieee80211_local *local = sdata->local;
+	u16 tid, params;
+	u16 initiator;
+	DECLARE_MAC_BUF(mac);
+
+	params = le16_to_cpu(mgmt->u.action.u.delba.params);
+	tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
+	initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+	if (net_ratelimit())
+		printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
+			print_mac(mac, mgmt->sa),
+			initiator ? "initiator" : "recipient", tid,
+			mgmt->u.action.u.delba.reason_code);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+	if (initiator == WLAN_BACK_INITIATOR)
+		ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid,
+						 WLAN_BACK_INITIATOR, 0);
+	else { /* WLAN_BACK_RECIPIENT */
+		spin_lock_bh(&sta->lock);
+		sta->ampdu_mlme.tid_state_tx[tid] =
+				HT_AGG_STATE_OPERATIONAL;
+		spin_unlock_bh(&sta->lock);
+		ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
+					     WLAN_BACK_RECIPIENT);
+	}
+}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c68d4df1119..6f334e4c3d6 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -53,6 +53,12 @@ struct ieee80211_local;
  * increased memory use (about 2 kB of RAM per entry). */
 #define IEEE80211_FRAGMENT_MAX 4
 
+/*
+ * Time after which we ignore scan results and no longer report/use
+ * them in any way.
+ */
+#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
+
 struct ieee80211_fragment_entry {
 	unsigned long first_frag_time;
 	unsigned int seq;
@@ -636,7 +642,7 @@ struct ieee80211_local {
 	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_sub_if_data *scan_sdata;
 	struct ieee80211_channel *oper_channel, *scan_channel;
 	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
 	size_t scan_ssid_len;
@@ -903,29 +909,31 @@ int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 				      u32 changed);
 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
-				   struct ieee80211_ht_info *ht_info);
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
-			struct ieee80211_ht_addt_info *ht_add_info_ie,
-			struct ieee80211_ht_bss_info *bss_info);
-void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
-				  u16 tid, u8 dialog_token, u16 start_seq_num,
-				  u16 agg_size, u16 timeout);
-void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
-				u16 initiator, u16 reason_code);
-void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
-
-void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
-				u16 tid, u16 initiator, u16 reason);
-void sta_addba_resp_timer_expired(unsigned long data);
-void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr);
 u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
 			    struct ieee802_11_elems *elems,
 			    enum ieee80211_band band);
-void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
-		int encrypt);
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+			      u8 *ssid, size_t ssid_len);
 void ieee802_11_parse_elems(u8 *start, size_t len,
-				   struct ieee802_11_elems *elems);
+			    struct ieee802_11_elems *elems);
+void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
+int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
+			     u8 *ssid, size_t ssid_len);
+struct ieee80211_sta_bss *
+ieee80211_bss_info_update(struct ieee80211_local *local,
+			  struct ieee80211_rx_status *rx_status,
+			  struct ieee80211_mgmt *mgmt,
+			  size_t len,
+			  struct ieee802_11_elems *elems,
+			  int freq, bool beacon);
+struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
+		     u8 *ssid, u8 ssid_len);
+struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
+		     u8 *ssid, u8 ssid_len);
+void ieee80211_rx_bss_put(struct ieee80211_local *local,
+			  struct ieee80211_sta_bss *bss);
 
 #ifdef CONFIG_MAC80211_MESH
 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
@@ -951,6 +959,34 @@ int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 
+/* HT */
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+				   struct ieee80211_ht_info *ht_info);
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+			struct ieee80211_ht_addt_info *ht_add_info_ie,
+			struct ieee80211_ht_bss_info *bss_info);
+void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
+
+void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
+				u16 tid, u16 initiator, u16 reason);
+void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr);
+void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
+			     struct sta_info *sta,
+			     struct ieee80211_mgmt *mgmt, size_t len);
+void ieee80211_process_addba_resp(struct ieee80211_local *local,
+				  struct sta_info *sta,
+				  struct ieee80211_mgmt *mgmt,
+				  size_t len);
+void ieee80211_process_addba_request(struct ieee80211_local *local,
+				     struct sta_info *sta,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len);
+
+/* Spectrum management */
+void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
+				       struct ieee80211_mgmt *mgmt,
+				       size_t len);
+
 /* utility functions/constants */
 extern void *mac80211_wiphy_privid; /* for wiphy privid */
 extern const unsigned char rfc1042_header[6];
@@ -961,6 +997,9 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
 			     int rate, int erp, int short_preamble);
 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
 				     struct ieee80211_hdr *hdr);
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
+void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+		      int encrypt);
 
 #ifdef CONFIG_MAC80211_NOINLINE
 #define debug_noinline noinline
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 4a623b8e91f..672cec60a2f 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -31,11 +31,11 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
 	int flushed;
 	int i;
 
-	ieee80211_debugfs_remove_netdev(sdata);
-
 	/* free extra data */
 	ieee80211_free_keys(sdata);
 
+	ieee80211_debugfs_remove_netdev(sdata);
+
 	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
 		__skb_queue_purge(&sdata->fragments[i].skb_list);
 	sdata->fragment_next = 0;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 396cfb2d0f4..6a7f4fae18c 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -399,8 +399,15 @@ static int ieee80211_open(struct net_device *dev)
 		atomic_inc(&local->iff_promiscs);
 
 	local->open_count++;
-	if (need_hw_reconfig)
+	if (need_hw_reconfig) {
 		ieee80211_hw_config(local);
+		/*
+		 * set default queue parameters so drivers don't
+		 * need to initialise the hardware if the hardware
+		 * doesn't start up with sane defaults
+		 */
+		ieee80211_set_wmm_default(sdata);
+	}
 
 	/*
 	 * ieee80211_sta_work is disabled while network interface
@@ -551,7 +558,7 @@ static int ieee80211_stop(struct net_device *dev)
 		synchronize_rcu();
 		skb_queue_purge(&sdata->u.sta.skb_queue);
 
-		if (local->scan_dev == sdata->dev) {
+		if (local->scan_sdata == sdata) {
 			if (!local->ops->hw_scan) {
 				local->sta_sw_scanning = 0;
 				cancel_delayed_work(&local->scan_work);
@@ -593,379 +600,6 @@ static int ieee80211_stop(struct net_device *dev)
 	return 0;
 }
 
-int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct sta_info *sta;
-	struct ieee80211_sub_if_data *sdata;
-	u16 start_seq_num;
-	u8 *state;
-	int ret;
-	DECLARE_MAC_BUF(mac);
-
-	if (tid >= STA_TID_NUM)
-		return -EINVAL;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
-				print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, ra);
-	if (!sta) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Could not find the station\n");
-#endif
-		ret = -ENOENT;
-		goto exit;
-	}
-
-	spin_lock_bh(&sta->lock);
-
-	/* we have tried too many times, receiver does not want A-MPDU */
-	if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
-		ret = -EBUSY;
-		goto err_unlock_sta;
-	}
-
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-	/* check if the TID is not in aggregation flow already */
-	if (*state != HT_AGG_STATE_IDLE) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "BA request denied - session is not "
-				 "idle on tid %u\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		ret = -EAGAIN;
-		goto err_unlock_sta;
-	}
-
-	/* prepare A-MPDU MLME for Tx aggregation */
-	sta->ampdu_mlme.tid_tx[tid] =
-			kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
-	if (!sta->ampdu_mlme.tid_tx[tid]) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
-					tid);
-#endif
-		ret = -ENOMEM;
-		goto err_unlock_sta;
-	}
-	/* Tx timer */
-	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
-			sta_addba_resp_timer_expired;
-	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
-			(unsigned long)&sta->timer_to_tid[tid];
-	init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-
-	/* create a new queue for this aggregation */
-	ret = ieee80211_ht_agg_queue_add(local, sta, tid);
-
-	/* case no queue is available to aggregation
-	 * don't switch to aggregation */
-	if (ret) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "BA request denied - queue unavailable for"
-					" tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		goto err_unlock_queue;
-	}
-	sdata = sta->sdata;
-
-	/* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
-	 * call back right away, it must see that the flow has begun */
-	*state |= HT_ADDBA_REQUESTED_MSK;
-
-	/* This is slightly racy because the queue isn't stopped */
-	start_seq_num = sta->tid_seq[tid];
-
-	if (local->ops->ampdu_action)
-		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
-						ra, tid, &start_seq_num);
-
-	if (ret) {
-		/* No need to requeue the packets in the agg queue, since we
-		 * held the tx lock: no packet could be enqueued to the newly
-		 * allocated queue */
-		ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "BA request denied - HW unavailable for"
-					" tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		*state = HT_AGG_STATE_IDLE;
-		goto err_unlock_queue;
-	}
-
-	/* Will put all the packets in the new SW queue */
-	ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
-	spin_unlock_bh(&sta->lock);
-
-	/* send an addBA request */
-	sta->ampdu_mlme.dialog_token_allocator++;
-	sta->ampdu_mlme.tid_tx[tid]->dialog_token =
-			sta->ampdu_mlme.dialog_token_allocator;
-	sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
-
-
-	ieee80211_send_addba_request(sta->sdata, ra, tid,
-			 sta->ampdu_mlme.tid_tx[tid]->dialog_token,
-			 sta->ampdu_mlme.tid_tx[tid]->ssn,
-			 0x40, 5000);
-	/* activate the timer for the recipient's addBA response */
-	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
-				jiffies + ADDBA_RESP_INTERVAL;
-	add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
-#endif
-	goto exit;
-
-err_unlock_queue:
-	kfree(sta->ampdu_mlme.tid_tx[tid]);
-	sta->ampdu_mlme.tid_tx[tid] = NULL;
-	ret = -EBUSY;
-err_unlock_sta:
-	spin_unlock_bh(&sta->lock);
-exit:
-	rcu_read_unlock();
-	return ret;
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
-
-int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
-				 u8 *ra, u16 tid,
-				 enum ieee80211_back_parties initiator)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct sta_info *sta;
-	u8 *state;
-	int ret = 0;
-	DECLARE_MAC_BUF(mac);
-
-	if (tid >= STA_TID_NUM)
-		return -EINVAL;
-
-	rcu_read_lock();
-	sta = sta_info_get(local, ra);
-	if (!sta) {
-		rcu_read_unlock();
-		return -ENOENT;
-	}
-
-	/* check if the TID is in aggregation */
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-	spin_lock_bh(&sta->lock);
-
-	if (*state != HT_AGG_STATE_OPERATIONAL) {
-		ret = -ENOENT;
-		goto stop_BA_exit;
-	}
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
-				print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
-
-	*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
-		(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
-
-	if (local->ops->ampdu_action)
-		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
-						ra, tid, NULL);
-
-	/* case HW denied going back to legacy */
-	if (ret) {
-		WARN_ON(ret != -EBUSY);
-		*state = HT_AGG_STATE_OPERATIONAL;
-		ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
-		goto stop_BA_exit;
-	}
-
-stop_BA_exit:
-	spin_unlock_bh(&sta->lock);
-	rcu_read_unlock();
-	return ret;
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
-
-void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct sta_info *sta;
-	u8 *state;
-	DECLARE_MAC_BUF(mac);
-
-	if (tid >= STA_TID_NUM) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
-				tid, STA_TID_NUM);
-#endif
-		return;
-	}
-
-	rcu_read_lock();
-	sta = sta_info_get(local, ra);
-	if (!sta) {
-		rcu_read_unlock();
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Could not find station: %s\n",
-				print_mac(mac, ra));
-#endif
-		return;
-	}
-
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-	spin_lock_bh(&sta->lock);
-
-	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
-				*state);
-#endif
-		spin_unlock_bh(&sta->lock);
-		rcu_read_unlock();
-		return;
-	}
-
-	WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
-
-	*state |= HT_ADDBA_DRV_READY_MSK;
-
-	if (*state == HT_AGG_STATE_OPERATIONAL) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
-#endif
-		ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
-	}
-	spin_unlock_bh(&sta->lock);
-	rcu_read_unlock();
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
-
-void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct sta_info *sta;
-	u8 *state;
-	int agg_queue;
-	DECLARE_MAC_BUF(mac);
-
-	if (tid >= STA_TID_NUM) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
-				tid, STA_TID_NUM);
-#endif
-		return;
-	}
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
-				print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	rcu_read_lock();
-	sta = sta_info_get(local, ra);
-	if (!sta) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "Could not find station: %s\n",
-				print_mac(mac, ra));
-#endif
-		rcu_read_unlock();
-		return;
-	}
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-
-	/* NOTE: no need to use sta->lock in this state check, as
-	 * ieee80211_stop_tx_ba_session will let only one stop call to
-	 * pass through per sta/tid
-	 */
-	if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
-#endif
-		rcu_read_unlock();
-		return;
-	}
-
-	if (*state & HT_AGG_STATE_INITIATOR_MSK)
-		ieee80211_send_delba(sta->sdata, ra, tid,
-			WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
-
-	agg_queue = sta->tid_to_tx_q[tid];
-
-	ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
-
-	/* We just requeued the all the frames that were in the
-	 * removed queue, and since we might miss a softirq we do
-	 * netif_schedule_queue.  ieee80211_wake_queue is not used
-	 * here as this queue is not necessarily stopped
-	 */
-	netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue));
-	spin_lock_bh(&sta->lock);
-	*state = HT_AGG_STATE_IDLE;
-	sta->ampdu_mlme.addba_req_num[tid] = 0;
-	kfree(sta->ampdu_mlme.tid_tx[tid]);
-	sta->ampdu_mlme.tid_tx[tid] = NULL;
-	spin_unlock_bh(&sta->lock);
-
-	rcu_read_unlock();
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
-
-void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
-				      const u8 *ra, u16 tid)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct ieee80211_ra_tid *ra_tid;
-	struct sk_buff *skb = dev_alloc_skb(0);
-
-	if (unlikely(!skb)) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_WARNING "%s: Not enough memory, "
-			       "dropping start BA session", skb->dev->name);
-#endif
-		return;
-	}
-	ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
-	memcpy(&ra_tid->ra, ra, ETH_ALEN);
-	ra_tid->tid = tid;
-
-	skb->pkt_type = IEEE80211_ADDBA_MSG;
-	skb_queue_tail(&local->skb_queue, skb);
-	tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
-
-void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
-				     const u8 *ra, u16 tid)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
-	struct ieee80211_ra_tid *ra_tid;
-	struct sk_buff *skb = dev_alloc_skb(0);
-
-	if (unlikely(!skb)) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_WARNING "%s: Not enough memory, "
-			       "dropping stop BA session", skb->dev->name);
-#endif
-		return;
-	}
-	ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
-	memcpy(&ra_tid->ra, ra, ETH_ALEN);
-	ra_tid->tid = tid;
-
-	skb->pkt_type = IEEE80211_DELBA_MSG;
-	skb_queue_tail(&local->skb_queue, skb);
-	tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
-
 static void ieee80211_set_multicast_list(struct net_device *dev)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@@ -1140,8 +774,8 @@ u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
 	ht_conf.ht_supported = 1;
 
 	ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
-	ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
-	ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
+	ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS);
+	ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS;
 	ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
 	ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
 	ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index eeb0ce2d5d3..210d6b85240 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -149,7 +149,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
 	pos += ETH_ALEN;
 	memcpy(pos, &dst_dsn, 4);
 
-	ieee80211_sta_tx(sdata, skb, 0);
+	ieee80211_tx_skb(sdata, skb, 0);
 	return 0;
 }
 
@@ -198,7 +198,7 @@ int mesh_path_error_tx(u8 *dst, __le32 dst_dsn, u8 *ra,
 	pos += ETH_ALEN;
 	memcpy(pos, &dst_dsn, 4);
 
-	ieee80211_sta_tx(sdata, skb, 0);
+	ieee80211_tx_skb(sdata, skb, 0);
 	return 0;
 }
 
@@ -581,6 +581,10 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
 	size_t baselen;
 	u32 last_hop_metric;
 
+	/* need action_code */
+	if (len < IEEE80211_MIN_ACTION_SIZE + 1)
+		return;
+
 	baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
 	ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
 			len - baselen, &elems);
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 7714b0e6e4d..7356462dee9 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -217,7 +217,7 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 		memcpy(pos, &reason, 2);
 	}
 
-	ieee80211_sta_tx(sdata, skb, 0);
+	ieee80211_tx_skb(sdata, skb, 0);
 	return 0;
 }
 
@@ -421,6 +421,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 	DECLARE_MAC_BUF(mac);
 #endif
 
+	/* need action_code, aux */
+	if (len < IEEE80211_MIN_ACTION_SIZE + 3)
+		return;
+
 	if (is_multicast_ether_addr(mgmt->da)) {
 		mpl_dbg("Mesh plink: ignore frame from multicast address");
 		return;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index df12e746b03..2c06f6965b7 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -11,11 +11,6 @@
  * published by the Free Software Foundation.
  */
 
-/* TODO:
- * order BSS list by RSSI(?) ("quality of AP")
- * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
- *    SSID)
- */
 #include <linux/delay.h>
 #include <linux/if_ether.h>
 #include <linux/skbuff.h>
@@ -26,9 +21,8 @@
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 #include <net/iw_handler.h>
-#include <asm/types.h>
-
 #include <net/mac80211.h>
+
 #include "ieee80211_i.h"
 #include "rate.h"
 #include "led.h"
@@ -47,10 +41,6 @@
 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
 #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * 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_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
@@ -58,219 +48,396 @@
 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
 
 
-#define ERP_INFO_USE_PROTECTION BIT(1)
+/* utils */
+static int ecw2cw(int ecw)
+{
+	return (1 << ecw) - 1;
+}
 
-/* mgmt header + 1 byte action code */
-#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
+static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie)
+{
+	u8 *end, *pos;
 
-#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
-#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
-#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
-#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
+	pos = bss->ies;
+	if (pos == NULL)
+		return NULL;
+	end = pos + bss->ies_len;
 
-/* next values represent the buffer size for A-MPDU frame.
- * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
-#define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
+	while (pos + 1 < end) {
+		if (pos + 2 + pos[1] > end)
+			break;
+		if (pos[0] == ie)
+			return pos;
+		pos += 2 + pos[1];
+	}
 
-static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
-				     u8 *ssid, size_t ssid_len);
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
-		     u8 *ssid, u8 ssid_len);
-static void ieee80211_rx_bss_put(struct ieee80211_local *local,
-				 struct ieee80211_sta_bss *bss);
-static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata,
-				   struct ieee80211_if_sta *ifsta);
-static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata);
-static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *sdata,
-				    u8 *ssid, size_t ssid_len);
-static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
-				     struct ieee80211_if_sta *ifsta);
-static void sta_rx_agg_session_timer_expired(unsigned long data);
+	return NULL;
+}
 
+static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
+				      struct ieee80211_supported_band *sband,
+				      u64 *rates)
+{
+	int i, j, count;
+	*rates = 0;
+	count = 0;
+	for (i = 0; i < bss->supp_rates_len; i++) {
+		int rate = (bss->supp_rates[i] & 0x7F) * 5;
+
+		for (j = 0; j < sband->n_bitrates; j++)
+			if (sband->bitrates[j].bitrate == rate) {
+				*rates |= BIT(j);
+				count++;
+				break;
+			}
+	}
 
-void ieee802_11_parse_elems(u8 *start, size_t len,
-			    struct ieee802_11_elems *elems)
+	return count;
+}
+
+/* frame sending functions */
+static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
+				struct ieee80211_if_sta *ifsta,
+				int transaction, u8 *extra, size_t extra_len,
+				int encrypt)
 {
-	size_t left = len;
-	u8 *pos = start;
+	struct ieee80211_local *local = sdata->local;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
 
-	memset(elems, 0, sizeof(*elems));
-	elems->ie_start = start;
-	elems->total_len = len;
+	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", sdata->dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	while (left >= 2) {
-		u8 id, elen;
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
+	memset(mgmt, 0, 24 + 6);
+	mgmt->frame_control = cpu_to_le16(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, sdata->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);
 
-		id = *pos++;
-		elen = *pos++;
-		left -= 2;
+	ieee80211_tx_skb(sdata, skb, encrypt);
+}
 
-		if (elen > left)
-			return;
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+			      u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_supported_band *sband;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u8 *pos, *supp_rates, *esupp_rates = NULL;
+	int i;
 
-		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;
-		case WLAN_EID_HT_CAPABILITY:
-			elems->ht_cap_elem = pos;
-			elems->ht_cap_elem_len = elen;
-			break;
-		case WLAN_EID_HT_EXTRA_INFO:
-			elems->ht_info_elem = pos;
-			elems->ht_info_elem_len = elen;
-			break;
-		case WLAN_EID_MESH_ID:
-			elems->mesh_id = pos;
-			elems->mesh_id_len = elen;
-			break;
-		case WLAN_EID_MESH_CONFIG:
-			elems->mesh_config = pos;
-			elems->mesh_config_len = elen;
-			break;
-		case WLAN_EID_PEER_LINK:
-			elems->peer_link = pos;
-			elems->peer_link_len = elen;
-			break;
-		case WLAN_EID_PREQ:
-			elems->preq = pos;
-			elems->preq_len = elen;
-			break;
-		case WLAN_EID_PREP:
-			elems->prep = pos;
-			elems->prep_len = elen;
-			break;
-		case WLAN_EID_PERR:
-			elems->perr = pos;
-			elems->perr_len = elen;
-			break;
-		case WLAN_EID_CHANNEL_SWITCH:
-			elems->ch_switch_elem = pos;
-			elems->ch_switch_elem_len = elen;
-			break;
-		case WLAN_EID_QUIET:
-			if (!elems->quiet_elem) {
-				elems->quiet_elem = pos;
-				elems->quiet_elem_len = elen;
+	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", sdata->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 = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_PROBE_REQ);
+	memcpy(mgmt->sa, sdata->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;
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+	for (i = 0; i < sband->n_bitrates; i++) {
+		struct ieee80211_rate *rate = &sband->bitrates[i];
+		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]++;
+		}
+		*pos = rate->bitrate / 5;
+	}
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
+				 struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u8 *pos, *ies, *ht_add_ie;
+	int i, len, count, rates_len, supp_rates_len;
+	u16 capab;
+	struct ieee80211_sta_bss *bss;
+	int wmm = 0;
+	struct ieee80211_supported_band *sband;
+	u64 rates = 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", sdata->dev->name);
+		return;
+	}
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+	capab = ifsta->capab;
+
+	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
+		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+			capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+			capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+	}
+
+	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
+				   local->hw.conf.channel->center_freq,
+				   ifsta->ssid, ifsta->ssid_len);
+	if (bss) {
+		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+			capab |= WLAN_CAPABILITY_PRIVACY;
+		if (bss->wmm_used)
+			wmm = 1;
+
+		/* get all rates supported by the device and the AP as
+		 * some APs don't like getting a superset of their rates
+		 * in the association request (e.g. D-Link DAP 1353 in
+		 * b-only mode) */
+		rates_len = ieee80211_compatible_rates(bss, sband, &rates);
+
+		if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
+		    (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
+			capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
+
+		ieee80211_rx_bss_put(local, bss);
+	} else {
+		rates = ~0;
+		rates_len = sband->n_bitrates;
+	}
+
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+	if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+		skb_put(skb, 10);
+		mgmt->frame_control = cpu_to_le16(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(local->hw.conf.listen_interval);
+		memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+		       ETH_ALEN);
+	} else {
+		skb_put(skb, 4);
+		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+						  IEEE80211_STYPE_ASSOC_REQ);
+		mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+		mgmt->u.reassoc_req.listen_interval =
+				cpu_to_le16(local->hw.conf.listen_interval);
+	}
+
+	/* 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);
+
+	/* add all rates which were marked to be used above */
+	supp_rates_len = rates_len;
+	if (supp_rates_len > 8)
+		supp_rates_len = 8;
+
+	len = sband->n_bitrates;
+	pos = skb_put(skb, supp_rates_len + 2);
+	*pos++ = WLAN_EID_SUPP_RATES;
+	*pos++ = supp_rates_len;
+
+	count = 0;
+	for (i = 0; i < sband->n_bitrates; i++) {
+		if (BIT(i) & rates) {
+			int rate = sband->bitrates[i].bitrate;
+			*pos++ = (u8) (rate / 5);
+			if (++count == 8)
+				break;
+		}
+	}
+
+	if (rates_len > count) {
+		pos = skb_put(skb, rates_len - count + 2);
+		*pos++ = WLAN_EID_EXT_SUPP_RATES;
+		*pos++ = rates_len - count;
+
+		for (i++; i < sband->n_bitrates; i++) {
+			if (BIT(i) & rates) {
+				int rate = sband->bitrates[i].bitrate;
+				*pos++ = (u8) (rate / 5);
 			}
-			elems->num_of_quiet_elem++;
-			break;
-		case WLAN_EID_COUNTRY:
-			elems->country_elem = pos;
-			elems->country_elem_len = elen;
-			break;
-		case WLAN_EID_PWR_CONSTRAINT:
-			elems->pwr_constr_elem = pos;
-			elems->pwr_constr_elem_len = elen;
-			break;
-		default:
-			break;
 		}
+	}
+
+	if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
+		/* 1. power capabilities */
+		pos = skb_put(skb, 4);
+		*pos++ = WLAN_EID_PWR_CAPABILITY;
+		*pos++ = 2;
+		*pos++ = 0; /* min tx power */
+		*pos++ = local->hw.conf.channel->max_power; /* max tx power */
 
-		left -= elen;
-		pos += elen;
+		/* 2. supported channels */
+		/* TODO: get this in reg domain format */
+		pos = skb_put(skb, 2 * sband->n_channels + 2);
+		*pos++ = WLAN_EID_SUPPORTED_CHANNELS;
+		*pos++ = 2 * sband->n_channels;
+		for (i = 0; i < sband->n_channels; i++) {
+			*pos++ = ieee80211_frequency_to_channel(
+					sband->channels[i].center_freq);
+			*pos++ = 1; /* one channel in the subband*/
+		}
 	}
-}
 
+	if (ifsta->extra_ie) {
+		pos = skb_put(skb, ifsta->extra_ie_len);
+		memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+	}
 
-static u8 * ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie)
-{
-	u8 *end, *pos;
+	if (wmm && (ifsta->flags & IEEE80211_STA_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;
+	}
 
-	pos = bss->ies;
-	if (pos == NULL)
-		return NULL;
-	end = pos + bss->ies_len;
+	/* wmm support is a must to HT */
+	if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
+	    sband->ht_info.ht_supported &&
+	    (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) {
+		struct ieee80211_ht_addt_info *ht_add_info =
+			(struct ieee80211_ht_addt_info *)ht_add_ie;
+		u16 cap = sband->ht_info.cap;
+		__le16 tmp;
+		u32 flags = local->hw.conf.channel->flags;
 
-	while (pos + 1 < end) {
-		if (pos + 2 + pos[1] > end)
+		switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) {
+		case IEEE80211_HT_IE_CHA_SEC_ABOVE:
+			if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
+				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
+				cap &= ~IEEE80211_HT_CAP_SGI_40;
+			}
 			break;
-		if (pos[0] == ie)
-			return pos;
-		pos += 2 + pos[1];
+		case IEEE80211_HT_IE_CHA_SEC_BELOW:
+			if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
+				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
+				cap &= ~IEEE80211_HT_CAP_SGI_40;
+			}
+			break;
+		}
+
+		tmp = cpu_to_le16(cap);
+		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
+		*pos++ = WLAN_EID_HT_CAPABILITY;
+		*pos++ = sizeof(struct ieee80211_ht_cap);
+		memset(pos, 0, sizeof(struct ieee80211_ht_cap));
+		memcpy(pos, &tmp, sizeof(u16));
+		pos += sizeof(u16);
+		/* TODO: needs a define here for << 2 */
+		*pos++ = sband->ht_info.ampdu_factor |
+			 (sband->ht_info.ampdu_density << 2);
+		memcpy(pos, sband->ht_info.supp_mcs_set, 16);
 	}
 
-	return NULL;
+	kfree(ifsta->assocreq_ies);
+	ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
+	ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
+	if (ifsta->assocreq_ies)
+		memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+
+	ieee80211_tx_skb(sdata, skb, 0);
 }
 
 
-static int ecw2cw(int ecw)
+static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+					   u16 stype, u16 reason)
 {
-	return (1 << ecw) - 1;
-}
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	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/disassoc frame\n", sdata->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, sdata->dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
+	skb_put(skb, 2);
+	/* u.deauth.reason_code == u.disassoc.reason_code */
+	mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+/* MLME */
 static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
-					 struct ieee80211_sta_bss *bss,
-					 int ibss)
+					 struct ieee80211_sta_bss *bss)
 {
 	struct ieee80211_local *local = sdata->local;
 	int i, have_higher_than_11mbit = 0;
 
-
 	/* cf. IEEE 802.11 9.2.12 */
 	for (i = 0; i < bss->supp_rates_len; i++)
 		if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
@@ -282,26 +449,7 @@ static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
 	else
 		sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
 
-
-	if (local->ops->conf_tx) {
-		struct ieee80211_tx_queue_params qparam;
-
-		memset(&qparam, 0, sizeof(qparam));
-
-		qparam.aifs = 2;
-
-		if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
-		    !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
-			qparam.cw_min = 31;
-		else
-			qparam.cw_min = 15;
-
-		qparam.cw_max = 1023;
-		qparam.txop = 0;
-
-		for (i = 0; i < local_to_hw(local)->queues; i++)
-			local->ops->conf_tx(local_to_hw(local), i, &qparam);
-	}
+	ieee80211_set_wmm_default(sdata);
 }
 
 static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
@@ -451,50 +599,15 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
 	return changed;
 }
 
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
-				   struct ieee80211_ht_info *ht_info)
+static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata,
+					struct ieee80211_if_sta *ifsta)
 {
-
-	if (ht_info == NULL)
-		return -EINVAL;
-
-	memset(ht_info, 0, sizeof(*ht_info));
-
-	if (ht_cap_ie) {
-		u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
-		ht_info->ht_supported = 1;
-		ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
-		ht_info->ampdu_factor =
-			ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
-		ht_info->ampdu_density =
-			(ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
-		memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
-	} else
-		ht_info->ht_supported = 0;
-
-	return 0;
-}
-
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
-			struct ieee80211_ht_addt_info *ht_add_info_ie,
-			struct ieee80211_ht_bss_info *bss_info)
-{
-	if (bss_info == NULL)
-		return -EINVAL;
-
-	memset(bss_info, 0, sizeof(*bss_info));
-
-	if (ht_add_info_ie) {
-		u16 op_mode;
-		op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
-
-		bss_info->primary_channel = ht_add_info_ie->control_chan;
-		bss_info->bss_cap = ht_add_info_ie->ht_param;
-		bss_info->bss_op_mode = (u8)(op_mode & 0xff);
-	}
-
-	return 0;
+	union iwreq_data wrqu;
+	memset(&wrqu, 0, sizeof(wrqu));
+	if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
+		memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
 }
 
 static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata,
@@ -518,134 +631,54 @@ static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata,
 
 
 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
-				     struct ieee80211_if_sta *ifsta,
-				     bool assoc)
+				     struct ieee80211_if_sta *ifsta)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_conf *conf = &local_to_hw(local)->conf;
-	union iwreq_data wrqu;
 	u32 changed = BSS_CHANGED_ASSOC;
 
-	if (assoc) {
-		struct ieee80211_sta_bss *bss;
-
-		ifsta->flags |= IEEE80211_STA_ASSOCIATED;
-
-		if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
-			return;
-
-		bss = ieee80211_rx_bss_get(local, ifsta->bssid,
-					   conf->channel->center_freq,
-					   ifsta->ssid, ifsta->ssid_len);
-		if (bss) {
-			/* set timing information */
-			sdata->bss_conf.beacon_int = bss->beacon_int;
-			sdata->bss_conf.timestamp = bss->timestamp;
-			sdata->bss_conf.dtim_period = bss->dtim_period;
-
-			changed |= ieee80211_handle_bss_capability(sdata, bss);
+	struct ieee80211_sta_bss *bss;
 
-			ieee80211_rx_bss_put(local, bss);
-		}
+	ifsta->flags |= IEEE80211_STA_ASSOCIATED;
 
-		if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
-			changed |= BSS_CHANGED_HT;
-			sdata->bss_conf.assoc_ht = 1;
-			sdata->bss_conf.ht_conf = &conf->ht_conf;
-			sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
-		}
+	if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+		return;
 
-		ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
-		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(sdata, ifsta);
-	} else {
-		netif_carrier_off(sdata->dev);
-		ieee80211_sta_tear_down_BA_sessions(sdata, ifsta->bssid);
-		ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
-		changed |= ieee80211_reset_erp_info(sdata);
+	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
+				   conf->channel->center_freq,
+				   ifsta->ssid, ifsta->ssid_len);
+	if (bss) {
+		/* set timing information */
+		sdata->bss_conf.beacon_int = bss->beacon_int;
+		sdata->bss_conf.timestamp = bss->timestamp;
+		sdata->bss_conf.dtim_period = bss->dtim_period;
 
-		sdata->bss_conf.assoc_ht = 0;
-		sdata->bss_conf.ht_conf = NULL;
-		sdata->bss_conf.ht_bss_conf = NULL;
+		changed |= ieee80211_handle_bss_capability(sdata, bss);
 
-		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+		ieee80211_rx_bss_put(local, bss);
 	}
-	ifsta->last_probe = jiffies;
-	ieee80211_led_assoc(local, assoc);
-
-	sdata->bss_conf.assoc = assoc;
-	ieee80211_bss_info_change_notify(sdata, changed);
-
-	if (assoc)
-		netif_carrier_on(sdata->dev);
-
-	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
-	wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
-}
 
-static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
-				   struct ieee80211_if_sta *ifsta, int deauth)
-{
-	if (deauth) {
-		ifsta->direct_probe_tries = 0;
-		ifsta->auth_tries = 0;
+	if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+		changed |= BSS_CHANGED_HT;
+		sdata->bss_conf.assoc_ht = 1;
+		sdata->bss_conf.ht_conf = &conf->ht_conf;
+		sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
 	}
-	ifsta->assoc_scan_tries = 0;
-	ifsta->assoc_tries = 0;
-	ieee80211_set_associated(sdata, ifsta, 0);
-}
-
-void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
-		      int encrypt)
-{
-	skb->dev = sdata->local->mdev;
-	skb_set_mac_header(skb, 0);
-	skb_set_network_header(skb, 0);
-	skb_set_transport_header(skb, 0);
 
-	skb->iif = sdata->dev->ifindex;
-	skb->do_not_encrypt = !encrypt;
+	ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
+	memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
+	ieee80211_sta_send_associnfo(sdata, ifsta);
 
-	dev_queue_xmit(skb);
-}
-
-
-static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
-				struct ieee80211_if_sta *ifsta,
-				int transaction, u8 *extra, size_t extra_len,
-				int encrypt)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
+	ifsta->last_probe = jiffies;
+	ieee80211_led_assoc(local, 1);
 
-	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", sdata->dev->name);
-		return;
-	}
-	skb_reserve(skb, local->hw.extra_tx_headroom);
+	sdata->bss_conf.assoc = 1;
+	ieee80211_bss_info_change_notify(sdata, changed);
 
-	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
-	memset(mgmt, 0, 24 + 6);
-	mgmt->frame_control = cpu_to_le16(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, sdata->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);
+	netif_tx_start_all_queues(sdata->dev);
+	netif_carrier_on(sdata->dev);
 
-	ieee80211_sta_tx(sdata, skb, encrypt);
+	ieee80211_sta_send_apinfo(sdata, ifsta);
 }
 
 static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata,
@@ -702,294 +735,76 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata,
 	mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
 }
 
-static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
-				      struct ieee80211_supported_band *sband,
-				      u64 *rates)
-{
-	int i, j, count;
-	*rates = 0;
-	count = 0;
-	for (i = 0; i < bss->supp_rates_len; i++) {
-		int rate = (bss->supp_rates[i] & 0x7F) * 5;
-
-		for (j = 0; j < sband->n_bitrates; j++)
-			if (sband->bitrates[j].bitrate == rate) {
-				*rates |= BIT(j);
-				count++;
-				break;
-			}
-	}
-
-	return count;
-}
-
-static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
-				 struct ieee80211_if_sta *ifsta)
+static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
+				   struct ieee80211_if_sta *ifsta, bool deauth,
+				   bool self_disconnected, u16 reason)
 {
 	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
-	u8 *pos, *ies, *ht_add_ie;
-	int i, len, count, rates_len, supp_rates_len;
-	u16 capab;
-	struct ieee80211_sta_bss *bss;
-	int wmm = 0;
-	struct ieee80211_supported_band *sband;
-	u64 rates = 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", sdata->dev->name);
-		return;
-	}
-	skb_reserve(skb, local->hw.extra_tx_headroom);
-
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
-	capab = ifsta->capab;
-
-	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
-		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
-			capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
-		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
-			capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
-	}
-
-	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
-				   local->hw.conf.channel->center_freq,
-				   ifsta->ssid, ifsta->ssid_len);
-	if (bss) {
-		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
-			capab |= WLAN_CAPABILITY_PRIVACY;
-		if (bss->wmm_used)
-			wmm = 1;
-
-		/* get all rates supported by the device and the AP as
-		 * some APs don't like getting a superset of their rates
-		 * in the association request (e.g. D-Link DAP 1353 in
-		 * b-only mode) */
-		rates_len = ieee80211_compatible_rates(bss, sband, &rates);
-
-		if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
-		    (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
-			capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
-
-		ieee80211_rx_bss_put(local, bss);
-	} else {
-		rates = ~0;
-		rates_len = sband->n_bitrates;
-	}
-
-	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
-	memset(mgmt, 0, 24);
-	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
-	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
-	if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
-		skb_put(skb, 10);
-		mgmt->frame_control = cpu_to_le16(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(local->hw.conf.listen_interval);
-		memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
-		       ETH_ALEN);
-	} else {
-		skb_put(skb, 4);
-		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-						  IEEE80211_STYPE_ASSOC_REQ);
-		mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
-		mgmt->u.reassoc_req.listen_interval =
-				cpu_to_le16(local->hw.conf.listen_interval);
-	}
-
-	/* 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);
-
-	/* add all rates which were marked to be used above */
-	supp_rates_len = rates_len;
-	if (supp_rates_len > 8)
-		supp_rates_len = 8;
+	struct sta_info *sta;
+	u32 changed = BSS_CHANGED_ASSOC;
 
-	len = sband->n_bitrates;
-	pos = skb_put(skb, supp_rates_len + 2);
-	*pos++ = WLAN_EID_SUPP_RATES;
-	*pos++ = supp_rates_len;
+	rcu_read_lock();
 
-	count = 0;
-	for (i = 0; i < sband->n_bitrates; i++) {
-		if (BIT(i) & rates) {
-			int rate = sband->bitrates[i].bitrate;
-			*pos++ = (u8) (rate / 5);
-			if (++count == 8)
-				break;
-		}
+	sta = sta_info_get(local, ifsta->bssid);
+	if (!sta) {
+		rcu_read_unlock();
+		return;
 	}
 
-	if (rates_len > count) {
-		pos = skb_put(skb, rates_len - count + 2);
-		*pos++ = WLAN_EID_EXT_SUPP_RATES;
-		*pos++ = rates_len - count;
-
-		for (i++; i < sband->n_bitrates; i++) {
-			if (BIT(i) & rates) {
-				int rate = sband->bitrates[i].bitrate;
-				*pos++ = (u8) (rate / 5);
-			}
-		}
+	if (deauth) {
+		ifsta->direct_probe_tries = 0;
+		ifsta->auth_tries = 0;
 	}
+	ifsta->assoc_scan_tries = 0;
+	ifsta->assoc_tries = 0;
 
-	if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
-		/* 1. power capabilities */
-		pos = skb_put(skb, 4);
-		*pos++ = WLAN_EID_PWR_CAPABILITY;
-		*pos++ = 2;
-		*pos++ = 0; /* min tx power */
-		*pos++ = local->hw.conf.channel->max_power; /* max tx power */
-
-		/* 2. supported channels */
-		/* TODO: get this in reg domain format */
-		pos = skb_put(skb, 2 * sband->n_channels + 2);
-		*pos++ = WLAN_EID_SUPPORTED_CHANNELS;
-		*pos++ = 2 * sband->n_channels;
-		for (i = 0; i < sband->n_channels; i++) {
-			*pos++ = ieee80211_frequency_to_channel(
-					sband->channels[i].center_freq);
-			*pos++ = 1; /* one channel in the subband*/
-		}
-	}
+	netif_tx_stop_all_queues(sdata->dev);
+	netif_carrier_off(sdata->dev);
 
-	if (ifsta->extra_ie) {
-		pos = skb_put(skb, ifsta->extra_ie_len);
-		memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
-	}
+	ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr);
 
-	if (wmm && (ifsta->flags & IEEE80211_STA_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;
+	if (self_disconnected) {
+		if (deauth)
+			ieee80211_send_deauth_disassoc(sdata,
+				IEEE80211_STYPE_DEAUTH, reason);
+		else
+			ieee80211_send_deauth_disassoc(sdata,
+				IEEE80211_STYPE_DISASSOC, reason);
 	}
 
-	/* wmm support is a must to HT */
-	if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
-	    sband->ht_info.ht_supported &&
-	    (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) {
-		struct ieee80211_ht_addt_info *ht_add_info =
-			(struct ieee80211_ht_addt_info *)ht_add_ie;
-		u16 cap = sband->ht_info.cap;
-		__le16 tmp;
-		u32 flags = local->hw.conf.channel->flags;
-
-		switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) {
-		case IEEE80211_HT_IE_CHA_SEC_ABOVE:
-			if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
-				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
-				cap &= ~IEEE80211_HT_CAP_SGI_40;
-			}
-			break;
-		case IEEE80211_HT_IE_CHA_SEC_BELOW:
-			if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
-				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
-				cap &= ~IEEE80211_HT_CAP_SGI_40;
-			}
-			break;
-		}
+	ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
+	changed |= ieee80211_reset_erp_info(sdata);
 
-		tmp = cpu_to_le16(cap);
-		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
-		*pos++ = WLAN_EID_HT_CAPABILITY;
-		*pos++ = sizeof(struct ieee80211_ht_cap);
-		memset(pos, 0, sizeof(struct ieee80211_ht_cap));
-		memcpy(pos, &tmp, sizeof(u16));
-		pos += sizeof(u16);
-		/* TODO: needs a define here for << 2 */
-		*pos++ = sband->ht_info.ampdu_factor |
-			 (sband->ht_info.ampdu_density << 2);
-		memcpy(pos, sband->ht_info.supp_mcs_set, 16);
-	}
+	if (sdata->bss_conf.assoc_ht)
+		changed |= BSS_CHANGED_HT;
 
-	kfree(ifsta->assocreq_ies);
-	ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
-	ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
-	if (ifsta->assocreq_ies)
-		memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+	sdata->bss_conf.assoc_ht = 0;
+	sdata->bss_conf.ht_conf = NULL;
+	sdata->bss_conf.ht_bss_conf = NULL;
 
-	ieee80211_sta_tx(sdata, skb, 0);
-}
+	ieee80211_led_assoc(local, 0);
+	sdata->bss_conf.assoc = 0;
 
+	ieee80211_sta_send_apinfo(sdata, ifsta);
 
-static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata,
-				  struct ieee80211_if_sta *ifsta, u16 reason)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
+	if (self_disconnected)
+		ifsta->state = IEEE80211_STA_MLME_DISABLED;
 
-	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", sdata->dev->name);
-		return;
-	}
-	skb_reserve(skb, local->hw.extra_tx_headroom);
+	sta_info_unlink(&sta);
 
-	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
-	memset(mgmt, 0, 24);
-	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
-	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_DEAUTH);
-	skb_put(skb, 2);
-	mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+	rcu_read_unlock();
 
-	ieee80211_sta_tx(sdata, skb, 0);
+	sta_info_destroy(sta);
 }
 
-
-static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata,
-				    struct ieee80211_if_sta *ifsta, u16 reason)
+static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
 {
-	struct ieee80211_local *local = sdata->local;
-	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", sdata->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, sdata->dev->dev_addr, ETH_ALEN);
-	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_DISASSOC);
-	skb_put(skb, 2);
-	mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
-
-	ieee80211_sta_tx(sdata, skb, 0);
+	if (!sdata || !sdata->default_key ||
+	    sdata->default_key->conf.alg != ALG_WEP)
+		return 0;
+	return 1;
 }
 
-
 static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata,
 				      struct ieee80211_if_sta *ifsta)
 {
@@ -1020,7 +835,6 @@ static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata,
 	return 1;
 }
 
-
 static void ieee80211_associate(struct ieee80211_sub_if_data *sdata,
 				struct ieee80211_if_sta *ifsta)
 {
@@ -1083,7 +897,6 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata,
 				       "range\n",
 				       sdata->dev->name, print_mac(mac, ifsta->bssid));
 				disassoc = 1;
-				sta_info_unlink(&sta);
 			} else
 				ieee80211_send_probe_req(sdata, ifsta->bssid,
 							 local->scan_ssid,
@@ -1103,86 +916,12 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata,
 
 	rcu_read_unlock();
 
-	if (disassoc && sta)
-		sta_info_destroy(sta);
-
-	if (disassoc) {
-		ifsta->state = IEEE80211_STA_MLME_DISABLED;
-		ieee80211_set_associated(sdata, ifsta, 0);
-	} else {
+	if (disassoc)
+		ieee80211_set_disassoc(sdata, ifsta, true, true,
+					WLAN_REASON_PREV_AUTH_NOT_VALID);
+	else
 		mod_timer(&ifsta->timer, jiffies +
 				      IEEE80211_MONITORING_INTERVAL);
-	}
-}
-
-
-static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
-				     u8 *ssid, size_t ssid_len)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_supported_band *sband;
-	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", sdata->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 = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_PROBE_REQ);
-	memcpy(mgmt->sa, sdata->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;
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
-	for (i = 0; i < sband->n_bitrates; i++) {
-		struct ieee80211_rate *rate = &sband->bitrates[i];
-		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]++;
-		}
-		*pos = rate->bitrate / 5;
-	}
-
-	ieee80211_sta_tx(sdata, skb, 0);
-}
-
-
-static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
-{
-	if (!sdata || !sdata->default_key ||
-	    sdata->default_key->conf.alg != ALG_WEP)
-		return 0;
-	return 1;
 }
 
 
@@ -1211,652 +950,6 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 			    elems.challenge_len + 2, 1);
 }
 
-static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
-					u8 dialog_token, u16 status, u16 policy,
-					u16 buf_size, u16 timeout)
-{
-	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
-	u16 capab;
-
-	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
-	if (!skb) {
-		printk(KERN_DEBUG "%s: failed to allocate buffer "
-		       "for addba resp frame\n", sdata->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, da, ETH_ALEN);
-	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
-		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_ACTION);
-
-	skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
-	mgmt->u.action.category = WLAN_CATEGORY_BACK;
-	mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
-	mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
-
-	capab = (u16)(policy << 1);	/* bit 1 aggregation policy */
-	capab |= (u16)(tid << 2); 	/* bit 5:2 TID number */
-	capab |= (u16)(buf_size << 6);	/* bit 15:6 max size of aggregation */
-
-	mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
-	mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
-	mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
-
-	ieee80211_sta_tx(sdata, skb, 0);
-
-	return;
-}
-
-void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
-				u16 tid, u8 dialog_token, u16 start_seq_num,
-				u16 agg_size, u16 timeout)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
-	u16 capab;
-
-	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
-	if (!skb) {
-		printk(KERN_ERR "%s: failed to allocate buffer "
-				"for addba request frame\n", sdata->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, da, ETH_ALEN);
-	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
-		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_ACTION);
-
-	skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
-
-	mgmt->u.action.category = WLAN_CATEGORY_BACK;
-	mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
-
-	mgmt->u.action.u.addba_req.dialog_token = dialog_token;
-	capab = (u16)(1 << 1);		/* bit 1 aggregation policy */
-	capab |= (u16)(tid << 2); 	/* bit 5:2 TID number */
-	capab |= (u16)(agg_size << 6);	/* bit 15:6 max size of aggergation */
-
-	mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
-
-	mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
-	mgmt->u.action.u.addba_req.start_seq_num =
-					cpu_to_le16(start_seq_num << 4);
-
-	ieee80211_sta_tx(sdata, skb, 0);
-}
-
-static void ieee80211_sta_process_addba_request(struct ieee80211_local *local,
-						struct ieee80211_mgmt *mgmt,
-						size_t len)
-{
-	struct ieee80211_hw *hw = &local->hw;
-	struct ieee80211_conf *conf = &hw->conf;
-	struct sta_info *sta;
-	struct tid_ampdu_rx *tid_agg_rx;
-	u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
-	u8 dialog_token;
-	int ret = -EOPNOTSUPP;
-	DECLARE_MAC_BUF(mac);
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, mgmt->sa);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
-	/* extract session parameters from addba request frame */
-	dialog_token = mgmt->u.action.u.addba_req.dialog_token;
-	timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
-	start_seq_num =
-		le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
-
-	capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
-	ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
-	tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
-	buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
-
-	status = WLAN_STATUS_REQUEST_DECLINED;
-
-	/* sanity check for incoming parameters:
-	 * check if configuration can support the BA policy
-	 * and if buffer size does not exceeds max value */
-	if (((ba_policy != 1)
-		&& (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
-		|| (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
-		status = WLAN_STATUS_INVALID_QOS_PARAM;
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_DEBUG "AddBA Req with bad params from "
-				"%s on tid %u. policy %d, buffer size %d\n",
-				print_mac(mac, mgmt->sa), tid, ba_policy,
-				buf_size);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		goto end_no_lock;
-	}
-	/* determine default buffer size */
-	if (buf_size == 0) {
-		struct ieee80211_supported_band *sband;
-
-		sband = local->hw.wiphy->bands[conf->channel->band];
-		buf_size = IEEE80211_MIN_AMPDU_BUF;
-		buf_size = buf_size << sband->ht_info.ampdu_factor;
-	}
-
-
-	/* examine state machine */
-	spin_lock_bh(&sta->lock);
-
-	if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_DEBUG "unexpected AddBA Req from "
-				"%s on tid %u\n",
-				print_mac(mac, mgmt->sa), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		goto end;
-	}
-
-	/* prepare A-MPDU MLME for Rx aggregation */
-	sta->ampdu_mlme.tid_rx[tid] =
-			kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
-	if (!sta->ampdu_mlme.tid_rx[tid]) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
-					tid);
-#endif
-		goto end;
-	}
-	/* rx timer */
-	sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
-				sta_rx_agg_session_timer_expired;
-	sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
-				(unsigned long)&sta->timer_to_tid[tid];
-	init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
-	tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
-
-	/* prepare reordering buffer */
-	tid_agg_rx->reorder_buf =
-		kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC);
-	if (!tid_agg_rx->reorder_buf) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		if (net_ratelimit())
-			printk(KERN_ERR "can not allocate reordering buffer "
-			       "to tid %d\n", tid);
-#endif
-		kfree(sta->ampdu_mlme.tid_rx[tid]);
-		goto end;
-	}
-	memset(tid_agg_rx->reorder_buf, 0,
-		buf_size * sizeof(struct sk_buff *));
-
-	if (local->ops->ampdu_action)
-		ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
-					       sta->addr, tid, &start_seq_num);
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	if (ret) {
-		kfree(tid_agg_rx->reorder_buf);
-		kfree(tid_agg_rx);
-		sta->ampdu_mlme.tid_rx[tid] = NULL;
-		goto end;
-	}
-
-	/* change state and send addba resp */
-	sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
-	tid_agg_rx->dialog_token = dialog_token;
-	tid_agg_rx->ssn = start_seq_num;
-	tid_agg_rx->head_seq_num = start_seq_num;
-	tid_agg_rx->buf_size = buf_size;
-	tid_agg_rx->timeout = timeout;
-	tid_agg_rx->stored_mpdu_num = 0;
-	status = WLAN_STATUS_SUCCESS;
-end:
-	spin_unlock_bh(&sta->lock);
-
-end_no_lock:
-	ieee80211_send_addba_resp(sta->sdata, sta->addr, tid,
-				  dialog_token, status, 1, buf_size, timeout);
-	rcu_read_unlock();
-}
-
-static void ieee80211_sta_process_addba_resp(struct ieee80211_local *local,
-					     struct ieee80211_mgmt *mgmt,
-					     size_t len)
-{
-	struct ieee80211_hw *hw = &local->hw;
-	struct sta_info *sta;
-	u16 capab;
-	u16 tid;
-	u8 *state;
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, mgmt->sa);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
-	capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
-	tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
-
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-
-	spin_lock_bh(&sta->lock);
-
-	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
-		spin_unlock_bh(&sta->lock);
-		goto addba_resp_exit;
-	}
-
-	if (mgmt->u.action.u.addba_resp.dialog_token !=
-		sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
-		spin_unlock_bh(&sta->lock);
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-		goto addba_resp_exit;
-	}
-
-	del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-	if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
-			== WLAN_STATUS_SUCCESS) {
-		*state |= HT_ADDBA_RECEIVED_MSK;
-		sta->ampdu_mlme.addba_req_num[tid] = 0;
-
-		if (*state == HT_AGG_STATE_OPERATIONAL)
-			ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
-
-		spin_unlock_bh(&sta->lock);
-	} else {
-		sta->ampdu_mlme.addba_req_num[tid]++;
-		/* this will allow the state check in stop_BA_session */
-		*state = HT_AGG_STATE_OPERATIONAL;
-		spin_unlock_bh(&sta->lock);
-		ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
-					     WLAN_BACK_INITIATOR);
-	}
-
-addba_resp_exit:
-	rcu_read_unlock();
-}
-
-void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
-			  u16 initiator, u16 reason_code)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *mgmt;
-	u16 params;
-
-	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
-	if (!skb) {
-		printk(KERN_ERR "%s: failed to allocate buffer "
-					"for delba frame\n", sdata->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, da, ETH_ALEN);
-	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-	if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
-		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_ACTION);
-
-	skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
-
-	mgmt->u.action.category = WLAN_CATEGORY_BACK;
-	mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
-	params = (u16)(initiator << 11); 	/* bit 11 initiator */
-	params |= (u16)(tid << 12); 		/* bit 15:12 TID number */
-
-	mgmt->u.action.u.delba.params = cpu_to_le16(params);
-	mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
-
-	ieee80211_sta_tx(sdata, skb, 0);
-}
-
-void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_bar *bar;
-	u16 bar_control = 0;
-
-	skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom);
-	if (!skb) {
-		printk(KERN_ERR "%s: failed to allocate buffer for "
-			"bar frame\n", sdata->dev->name);
-		return;
-	}
-	skb_reserve(skb, local->hw.extra_tx_headroom);
-	bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar));
-	memset(bar, 0, sizeof(*bar));
-	bar->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
-					 IEEE80211_STYPE_BACK_REQ);
-	memcpy(bar->ra, ra, ETH_ALEN);
-	memcpy(bar->ta, sdata->dev->dev_addr, ETH_ALEN);
-	bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
-	bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
-	bar_control |= (u16)(tid << 12);
-	bar->control = cpu_to_le16(bar_control);
-	bar->start_seq_num = cpu_to_le16(ssn);
-
-	ieee80211_sta_tx(sdata, skb, 0);
-}
-
-void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid,
-					u16 initiator, u16 reason)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_hw *hw = &local->hw;
-	struct sta_info *sta;
-	int ret, i;
-	DECLARE_MAC_BUF(mac);
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, ra);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
-	/* check if TID is in operational state */
-	spin_lock_bh(&sta->lock);
-	if (sta->ampdu_mlme.tid_state_rx[tid]
-				!= HT_AGG_STATE_OPERATIONAL) {
-		spin_unlock_bh(&sta->lock);
-		rcu_read_unlock();
-		return;
-	}
-	sta->ampdu_mlme.tid_state_rx[tid] =
-		HT_AGG_STATE_REQ_STOP_BA_MSK |
-		(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
-	spin_unlock_bh(&sta->lock);
-
-	/* stop HW Rx aggregation. ampdu_action existence
-	 * already verified in session init so we add the BUG_ON */
-	BUG_ON(!local->ops->ampdu_action);
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
-				print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
-					ra, tid, NULL);
-	if (ret)
-		printk(KERN_DEBUG "HW problem - can not stop rx "
-				"aggregation for tid %d\n", tid);
-
-	/* shutdown timer has not expired */
-	if (initiator != WLAN_BACK_TIMER)
-		del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
-	/* check if this is a self generated aggregation halt */
-	if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
-		ieee80211_send_delba(sdata, ra, tid, 0, reason);
-
-	/* free the reordering buffer */
-	for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
-		if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
-			/* release the reordered frames */
-			dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
-			sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
-			sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
-		}
-	}
-	/* free resources */
-	kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
-	kfree(sta->ampdu_mlme.tid_rx[tid]);
-	sta->ampdu_mlme.tid_rx[tid] = NULL;
-	sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
-
-	rcu_read_unlock();
-}
-
-
-static void ieee80211_sta_process_delba(struct ieee80211_sub_if_data *sdata,
-			struct ieee80211_mgmt *mgmt, size_t len)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct sta_info *sta;
-	u16 tid, params;
-	u16 initiator;
-	DECLARE_MAC_BUF(mac);
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, mgmt->sa);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
-	params = le16_to_cpu(mgmt->u.action.u.delba.params);
-	tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
-	initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	if (net_ratelimit())
-		printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
-			print_mac(mac, mgmt->sa),
-			initiator ? "initiator" : "recipient", tid,
-			mgmt->u.action.u.delba.reason_code);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
-	if (initiator == WLAN_BACK_INITIATOR)
-		ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid,
-						 WLAN_BACK_INITIATOR, 0);
-	else { /* WLAN_BACK_RECIPIENT */
-		spin_lock_bh(&sta->lock);
-		sta->ampdu_mlme.tid_state_tx[tid] =
-				HT_AGG_STATE_OPERATIONAL;
-		spin_unlock_bh(&sta->lock);
-		ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
-					     WLAN_BACK_RECIPIENT);
-	}
-	rcu_read_unlock();
-}
-
-/*
- * After sending add Block Ack request we activated a timer until
- * add Block Ack response will arrive from the recipient.
- * If this timer expires sta_addba_resp_timer_expired will be executed.
- */
-void sta_addba_resp_timer_expired(unsigned long data)
-{
-	/* not an elegant detour, but there is no choice as the timer passes
-	 * only one argument, and both sta_info and TID are needed, so init
-	 * flow in sta_info_create gives the TID as data, while the timer_to_id
-	 * array gives the sta through container_of */
-	u16 tid = *(u8 *)data;
-	struct sta_info *temp_sta = container_of((void *)data,
-		struct sta_info, timer_to_tid[tid]);
-
-	struct ieee80211_local *local = temp_sta->local;
-	struct ieee80211_hw *hw = &local->hw;
-	struct sta_info *sta;
-	u8 *state;
-
-	rcu_read_lock();
-
-	sta = sta_info_get(local, temp_sta->addr);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
-	state = &sta->ampdu_mlme.tid_state_tx[tid];
-	/* check if the TID waits for addBA response */
-	spin_lock_bh(&sta->lock);
-	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
-		spin_unlock_bh(&sta->lock);
-		*state = HT_AGG_STATE_IDLE;
-#ifdef CONFIG_MAC80211_HT_DEBUG
-		printk(KERN_DEBUG "timer expired on tid %d but we are not "
-				"expecting addBA response there", tid);
-#endif
-		goto timer_expired_exit;
-	}
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
-#endif
-
-	/* go through the state check in stop_BA_session */
-	*state = HT_AGG_STATE_OPERATIONAL;
-	spin_unlock_bh(&sta->lock);
-	ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
-				     WLAN_BACK_INITIATOR);
-
-timer_expired_exit:
-	rcu_read_unlock();
-}
-
-/*
- * After accepting the AddBA Request we activated a timer,
- * resetting it after each frame that arrives from the originator.
- * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
- */
-static void sta_rx_agg_session_timer_expired(unsigned long data)
-{
-	/* not an elegant detour, but there is no choice as the timer passes
-	 * only one argument, and various sta_info are needed here, so init
-	 * flow in sta_info_create gives the TID as data, while the timer_to_id
-	 * array gives the sta through container_of */
-	u8 *ptid = (u8 *)data;
-	u8 *timer_to_id = ptid - *ptid;
-	struct sta_info *sta = container_of(timer_to_id, struct sta_info,
-					 timer_to_tid[0]);
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-	printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
-#endif
-	ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr,
-					 (u16)*ptid, WLAN_BACK_TIMER,
-					 WLAN_REASON_QSTA_TIMEOUT);
-}
-
-void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr)
-{
-	struct ieee80211_local *local = sdata->local;
-	int i;
-
-	for (i = 0; i <  STA_TID_NUM; i++) {
-		ieee80211_stop_tx_ba_session(&local->hw, addr, i,
-					     WLAN_BACK_INITIATOR);
-		ieee80211_sta_stop_rx_ba_session(sdata, addr, i,
-						 WLAN_BACK_RECIPIENT,
-						 WLAN_REASON_QSTA_LEAVE_QBSS);
-	}
-}
-
-static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
-					struct ieee80211_msrment_ie *request_ie,
-					const u8 *da, const u8 *bssid,
-					u8 dialog_token)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct sk_buff *skb;
-	struct ieee80211_mgmt *msr_report;
-
-	skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
-				sizeof(struct ieee80211_msrment_ie));
-
-	if (!skb) {
-		printk(KERN_ERR "%s: failed to allocate buffer for "
-				"measurement report frame\n", sdata->dev->name);
-		return;
-	}
-
-	skb_reserve(skb, local->hw.extra_tx_headroom);
-	msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
-	memset(msr_report, 0, 24);
-	memcpy(msr_report->da, da, ETH_ALEN);
-	memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
-	memcpy(msr_report->bssid, bssid, ETH_ALEN);
-	msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-						IEEE80211_STYPE_ACTION);
-
-	skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
-	msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
-	msr_report->u.action.u.measurement.action_code =
-				WLAN_ACTION_SPCT_MSR_RPRT;
-	msr_report->u.action.u.measurement.dialog_token = dialog_token;
-
-	msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
-	msr_report->u.action.u.measurement.length =
-			sizeof(struct ieee80211_msrment_ie);
-
-	memset(&msr_report->u.action.u.measurement.msr_elem, 0,
-		sizeof(struct ieee80211_msrment_ie));
-	msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
-	msr_report->u.action.u.measurement.msr_elem.mode |=
-			IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
-	msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
-
-	ieee80211_sta_tx(sdata, skb, 0);
-}
-
-static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata,
-						struct ieee80211_mgmt *mgmt,
-						size_t len)
-{
-	/*
-	 * Ignoring measurement request is spec violation.
-	 * Mandatory measurements must be reported optional
-	 * measurements might be refused or reported incapable
-	 * For now just refuse
-	 * TODO: Answer basic measurement as unmeasured
-	 */
-	ieee80211_send_refuse_measurement_request(sdata,
-			&mgmt->u.action.u.measurement.msr_elem,
-			mgmt->sa, mgmt->bssid,
-			mgmt->u.action.u.measurement.dialog_token);
-}
-
-
 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
 				   struct ieee80211_if_sta *ifsta,
 				   struct ieee80211_mgmt *mgmt,
@@ -1977,7 +1070,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
 				      IEEE80211_RETRY_AUTH_INTERVAL);
 	}
 
-	ieee80211_set_disassoc(sdata, ifsta, 1);
+	ieee80211_set_disassoc(sdata, ifsta, true, false, 0);
 	ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
 }
 
@@ -2007,7 +1100,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
 				      IEEE80211_RETRY_AUTH_INTERVAL);
 	}
 
-	ieee80211_set_disassoc(sdata, ifsta, 0);
+	ieee80211_set_disassoc(sdata, ifsta, false, false, 0);
 }
 
 
@@ -2201,209 +1294,12 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	 * ieee80211_set_associated() will tell the driver */
 	bss_conf->aid = aid;
 	bss_conf->assoc_capability = capab_info;
-	ieee80211_set_associated(sdata, ifsta, 1);
+	ieee80211_set_associated(sdata, ifsta);
 
 	ieee80211_associated(sdata, ifsta);
 }
 
 
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local,
-					struct ieee80211_sta_bss *bss)
-{
-	u8 hash_idx;
-
-	if (bss_mesh_cfg(bss))
-		hash_idx = mesh_id_hash(bss_mesh_id(bss),
-					bss_mesh_id_len(bss));
-	else
-		hash_idx = STA_HASH(bss->bssid);
-
-	bss->hnext = local->sta_bss_hash[hash_idx];
-	local->sta_bss_hash[hash_idx] = bss;
-}
-
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local,
-					struct ieee80211_sta_bss *bss)
-{
-	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 ieee80211_sub_if_data *sdata, u8 *bssid, int freq,
-		     u8 *ssid, u8 ssid_len)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_sta_bss *bss;
-
-	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
-	if (!bss)
-		return NULL;
-	atomic_inc(&bss->users);
-	atomic_inc(&bss->users);
-	memcpy(bss->bssid, bssid, ETH_ALEN);
-	bss->freq = freq;
-	if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
-		memcpy(bss->ssid, ssid, ssid_len);
-		bss->ssid_len = ssid_len;
-	}
-
-	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(local, bss);
-	spin_unlock_bh(&local->sta_bss_lock);
-	return bss;
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
-		     u8 *ssid, u8 ssid_len)
-{
-	struct ieee80211_sta_bss *bss;
-
-	spin_lock_bh(&local->sta_bss_lock);
-	bss = local->sta_bss_hash[STA_HASH(bssid)];
-	while (bss) {
-		if (!bss_mesh_cfg(bss) &&
-		    !memcmp(bss->bssid, bssid, ETH_ALEN) &&
-		    bss->freq == freq &&
-		    bss->ssid_len == ssid_len &&
-		    (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
-			atomic_inc(&bss->users);
-			break;
-		}
-		bss = bss->hnext;
-	}
-	spin_unlock_bh(&local->sta_bss_lock);
-	return bss;
-}
-
-#ifdef CONFIG_MAC80211_MESH
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
-			  u8 *mesh_cfg, int freq)
-{
-	struct ieee80211_sta_bss *bss;
-
-	spin_lock_bh(&local->sta_bss_lock);
-	bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
-	while (bss) {
-		if (bss_mesh_cfg(bss) &&
-		    !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
-		    bss->freq == freq &&
-		    mesh_id_len == bss->mesh_id_len &&
-		    (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
-						 mesh_id_len))) {
-			atomic_inc(&bss->users);
-			break;
-		}
-		bss = bss->hnext;
-	}
-	spin_unlock_bh(&local->sta_bss_lock);
-	return bss;
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
-			  u8 *mesh_cfg, int mesh_config_len, int freq)
-{
-	struct ieee80211_sta_bss *bss;
-
-	if (mesh_config_len != MESH_CFG_LEN)
-		return NULL;
-
-	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
-	if (!bss)
-		return NULL;
-
-	bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
-	if (!bss->mesh_cfg) {
-		kfree(bss);
-		return NULL;
-	}
-
-	if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
-		bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
-		if (!bss->mesh_id) {
-			kfree(bss->mesh_cfg);
-			kfree(bss);
-			return NULL;
-		}
-		memcpy(bss->mesh_id, mesh_id, mesh_id_len);
-	}
-
-	atomic_inc(&bss->users);
-	atomic_inc(&bss->users);
-	memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
-	bss->mesh_id_len = mesh_id_len;
-	bss->freq = freq;
-	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(local, bss);
-	spin_unlock_bh(&local->sta_bss_lock);
-	return bss;
-}
-#endif
-
-static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
-{
-	kfree(bss->ies);
-	kfree(bss_mesh_id(bss));
-	kfree(bss_mesh_cfg(bss));
-	kfree(bss);
-}
-
-
-static void ieee80211_rx_bss_put(struct ieee80211_local *local,
-				 struct ieee80211_sta_bss *bss)
-{
-	local_bh_disable();
-	if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
-		local_bh_enable();
-		return;
-	}
-
-	__ieee80211_rx_bss_hash_del(local, bss);
-	list_del(&bss->list);
-	spin_unlock_bh(&local->sta_bss_lock);
-	ieee80211_rx_bss_free(bss);
-}
-
-
-void ieee80211_rx_bss_list_init(struct ieee80211_local *local)
-{
-	spin_lock_init(&local->sta_bss_lock);
-	INIT_LIST_HEAD(&local->sta_bss_list);
-}
-
-
-void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local)
-{
-	struct ieee80211_sta_bss *bss, *tmp;
-
-	list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
-		ieee80211_rx_bss_put(local, bss);
-}
-
-
 static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 				   struct ieee80211_if_sta *ifsta,
 				   struct ieee80211_sta_bss *bss)
@@ -2508,7 +1404,7 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	}
 	ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
 
-	ieee80211_sta_def_wmm_params(sdata, bss, 1);
+	ieee80211_sta_def_wmm_params(sdata, bss);
 
 	ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED;
 	mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
@@ -2588,21 +1484,29 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 				  struct ieee80211_mgmt *mgmt,
 				  size_t len,
 				  struct ieee80211_rx_status *rx_status,
-				  struct ieee802_11_elems *elems)
+				  struct ieee802_11_elems *elems,
+				  bool beacon)
 {
 	struct ieee80211_local *local = sdata->local;
-	int freq, clen;
+	int freq;
 	struct ieee80211_sta_bss *bss;
 	struct sta_info *sta;
 	struct ieee80211_channel *channel;
 	u64 beacon_timestamp, rx_timestamp;
 	u64 supp_rates = 0;
-	bool beacon = ieee80211_is_beacon(mgmt->frame_control);
 	enum ieee80211_band band = rx_status->band;
 	DECLARE_MAC_BUF(mac);
 	DECLARE_MAC_BUF(mac2);
 
-	beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+	if (elems->ds_params && elems->ds_params_len == 1)
+		freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
+	else
+		freq = rx_status->freq;
+
+	channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+		return;
 
 	if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
 	    elems->mesh_config && mesh_matches_local(elems, sdata)) {
@@ -2612,13 +1516,12 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 				      mesh_peer_accepts_plinks(elems));
 	}
 
-	rcu_read_lock();
-
 	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates &&
 	    memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
-
 		supp_rates = ieee80211_sta_get_rates(local, elems, band);
 
+		rcu_read_lock();
+
 		sta = sta_info_get(local, mgmt->sa);
 		if (sta) {
 			u64 prev_rates;
@@ -2642,95 +1545,18 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 			ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid,
 					       mgmt->sa, supp_rates);
 		}
-	}
-
-	rcu_read_unlock();
-
-	if (elems->ds_params && elems->ds_params_len == 1)
-		freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
-	else
-		freq = rx_status->freq;
-
-	channel = ieee80211_get_channel(local->hw.wiphy, freq);
-
-	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
-		return;
-
-#ifdef CONFIG_MAC80211_MESH
-	if (elems->mesh_config)
-		bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
-				elems->mesh_id_len, elems->mesh_config, freq);
-	else
-#endif
-		bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq,
-					   elems->ssid, elems->ssid_len);
-	if (!bss) {
-#ifdef CONFIG_MAC80211_MESH
-		if (elems->mesh_config)
-			bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id,
-				elems->mesh_id_len, elems->mesh_config,
-				elems->mesh_config_len, freq);
-		else
-#endif
-			bss = ieee80211_rx_bss_add(sdata, mgmt->bssid, freq,
-						  elems->ssid, elems->ssid_len);
-		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
-	}
 
-	/* save the ERP value so that it is available at association time */
-	if (elems->erp_info && elems->erp_info_len >= 1) {
-		bss->erp_value = elems->erp_info[0];
-		bss->has_erp_value = 1;
-	}
-
-	bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
-	bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-
-	if (elems->tim) {
-		struct ieee80211_tim_ie *tim_ie =
-			(struct ieee80211_tim_ie *)elems->tim;
-		bss->dtim_period = tim_ie->dtim_period;
+		rcu_read_unlock();
 	}
 
-	/* set default value for buggy APs */
-	if (!elems->tim || bss->dtim_period == 0)
-		bss->dtim_period = 1;
-
-	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;
-	}
+	bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
+					freq, beacon);
+	if (!bss)
+		return;
 
-	bss->band = band;
+	/* was just updated in ieee80211_bss_info_update */
+	beacon_timestamp = bss->timestamp;
 
-	bss->timestamp = beacon_timestamp;
-	bss->last_update = jiffies;
-	bss->signal = rx_status->signal;
-	bss->noise = rx_status->noise;
-	bss->qual = rx_status->qual;
-	if (!beacon)
-		bss->last_probe_resp = jiffies;
 	/*
 	 * In STA mode, the remaining parameters should not be overridden
 	 * by beacons because they're not necessarily accurate there.
@@ -2741,21 +1567,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		return;
 	}
 
-	if (bss->ies == NULL || bss->ies_len < elems->total_len) {
-		kfree(bss->ies);
-		bss->ies = kmalloc(elems->total_len, GFP_ATOMIC);
-	}
-	if (bss->ies) {
-		memcpy(bss->ies, elems->ie_start, elems->total_len);
-		bss->ies_len = elems->total_len;
-	} else
-		bss->ies_len = 0;
-
-	bss->wmm_used = elems->wmm_param || elems->wmm_info;
-
 	/* check if we need to merge IBSS */
 	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
-	    !local->sta_sw_scanning && !local->sta_hw_scanning &&
 	    bss->capability & WLAN_CAPABILITY_IBSS &&
 	    bss->freq == local->oper_channel->center_freq &&
 	    elems->ssid_len == sdata->u.sta.ssid_len &&
@@ -2832,7 +1645,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
 	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
 				&elems);
 
-	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
+	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
 
 	/* direct probe may be part of the association flow */
 	if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE,
@@ -2863,7 +1676,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 
 	ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
 
-	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
+	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true);
 
 	if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
 		return;
@@ -2876,12 +1689,6 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
 				 elems.wmm_param_len);
 
-	/* Do not send changes to driver if we are scanning. This removes
-	 * requirement that driver's bss_info_changed function needs to be
-	 * atomic. */
-	if (local->sta_sw_scanning || local->sta_hw_scanning)
-		return;
-
 	if (elems.erp_info && elems.erp_info_len >= 1)
 		changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
 	else {
@@ -2975,7 +1782,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
 	printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
 	       sdata->dev->name, print_mac(mac, resp->da));
 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
-	ieee80211_sta_tx(sdata, skb, 0);
+	ieee80211_tx_skb(sdata, skb, 0);
 }
 
 static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
@@ -2984,53 +1791,16 @@ static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
 				     size_t len,
 				     struct ieee80211_rx_status *rx_status)
 {
-	struct ieee80211_local *local = sdata->local;
-
-	if (len < IEEE80211_MIN_ACTION_SIZE)
+	/* currently we only handle mesh interface action frames here */
+	if (!ieee80211_vif_is_mesh(&sdata->vif))
 		return;
 
 	switch (mgmt->u.action.category) {
-	case WLAN_CATEGORY_SPECTRUM_MGMT:
-		if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
-			break;
-		switch (mgmt->u.action.u.chan_switch.action_code) {
-		case WLAN_ACTION_SPCT_MSR_REQ:
-			if (len < (IEEE80211_MIN_ACTION_SIZE +
-				   sizeof(mgmt->u.action.u.measurement)))
-				break;
-			ieee80211_sta_process_measurement_req(sdata, mgmt, len);
-			break;
-		}
-		break;
-	case WLAN_CATEGORY_BACK:
-		switch (mgmt->u.action.u.addba_req.action_code) {
-		case WLAN_ACTION_ADDBA_REQ:
-			if (len < (IEEE80211_MIN_ACTION_SIZE +
-				   sizeof(mgmt->u.action.u.addba_req)))
-				break;
-			ieee80211_sta_process_addba_request(local, mgmt, len);
-			break;
-		case WLAN_ACTION_ADDBA_RESP:
-			if (len < (IEEE80211_MIN_ACTION_SIZE +
-				   sizeof(mgmt->u.action.u.addba_resp)))
-				break;
-			ieee80211_sta_process_addba_resp(local, mgmt, len);
-			break;
-		case WLAN_ACTION_DELBA:
-			if (len < (IEEE80211_MIN_ACTION_SIZE +
-				   sizeof(mgmt->u.action.u.delba)))
-				break;
-			ieee80211_sta_process_delba(sdata, mgmt, len);
-			break;
-		}
-		break;
 	case PLINK_CATEGORY:
-		if (ieee80211_vif_is_mesh(&sdata->vif))
-			mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+		mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
 		break;
 	case MESH_PATH_SEL_CATEGORY:
-		if (ieee80211_vif_is_mesh(&sdata->vif))
-			mesh_rx_path_sel_frame(sdata, mgmt, len);
+		mesh_rx_path_sel_frame(sdata, mgmt, len);
 		break;
 	}
 }
@@ -3120,41 +1890,6 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 }
 
 
-ieee80211_rx_result
-ieee80211_sta_rx_scan(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
-		      struct ieee80211_rx_status *rx_status)
-{
-	struct ieee80211_mgmt *mgmt;
-	__le16 fc;
-
-	if (skb->len < 2)
-		return RX_DROP_UNUSABLE;
-
-	mgmt = (struct ieee80211_mgmt *) skb->data;
-	fc = mgmt->frame_control;
-
-	if (ieee80211_is_ctl(fc))
-		return RX_CONTINUE;
-
-	if (skb->len < 24)
-		return RX_DROP_MONITOR;
-
-	if (ieee80211_is_probe_resp(fc)) {
-		ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status);
-		dev_kfree_skb(skb);
-		return RX_QUEUED;
-	}
-
-	if (ieee80211_is_beacon(fc)) {
-		ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
-		dev_kfree_skb(skb);
-		return RX_QUEUED;
-	}
-
-	return RX_CONTINUE;
-}
-
-
 static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_local *local = sdata->local;
@@ -3259,95 +1994,6 @@ void ieee80211_sta_timer(unsigned long data)
 	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 ieee80211_local *local = sdata->local;
-	struct ieee80211_if_sta *ifsta;
-	struct sk_buff *skb;
-
-	if (!netif_running(sdata->dev))
-		return;
-
-	if (local->sta_sw_scanning || local->sta_hw_scanning)
-		return;
-
-	if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
-		    sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
-		    sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
-		return;
-	ifsta = &sdata->u.sta;
-
-	while ((skb = skb_dequeue(&ifsta->skb_queue)))
-		ieee80211_sta_rx_queued_mgmt(sdata, skb);
-
-#ifdef CONFIG_MAC80211_MESH
-	if (ifsta->preq_queue_len &&
-	    time_after(jiffies,
-		       ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
-		mesh_path_start_discovery(sdata);
-#endif
-
-	if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE &&
-	    ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
-	    ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
-	    test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
-		if (ifsta->scan_ssid_len)
-			ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
-		else
-			ieee80211_sta_start_scan(sdata, NULL, 0);
-		return;
-	}
-
-	if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
-		if (ieee80211_sta_config_auth(sdata, 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_STA_MLME_DISABLED:
-		break;
-	case IEEE80211_STA_MLME_DIRECT_PROBE:
-		ieee80211_direct_probe(sdata, ifsta);
-		break;
-	case IEEE80211_STA_MLME_AUTHENTICATE:
-		ieee80211_authenticate(sdata, ifsta);
-		break;
-	case IEEE80211_STA_MLME_ASSOCIATE:
-		ieee80211_associate(sdata, ifsta);
-		break;
-	case IEEE80211_STA_MLME_ASSOCIATED:
-		ieee80211_associated(sdata, ifsta);
-		break;
-	case IEEE80211_STA_MLME_IBSS_SEARCH:
-		ieee80211_sta_find_ibss(sdata, ifsta);
-		break;
-	case IEEE80211_STA_MLME_IBSS_JOINED:
-		ieee80211_sta_merge_ibss(sdata, ifsta);
-		break;
-#ifdef CONFIG_MAC80211_MESH
-	case IEEE80211_STA_MLME_MESH_UP:
-		ieee80211_mesh_housekeeping(sdata, ifsta);
-		break;
-#endif
-	default:
-		WARN_ON(1);
-		break;
-	}
-
-	if (ieee80211_privacy_mismatch(sdata, ifsta)) {
-		printk(KERN_DEBUG "%s: privacy configuration mismatch and "
-		       "mixed-cell disabled - disassociate\n", sdata->dev->name);
-
-		ieee80211_send_disassoc(sdata, ifsta, WLAN_REASON_UNSPECIFIED);
-		ieee80211_set_disassoc(sdata, ifsta, 0);
-	}
-}
-
-
 static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_if_sta *ifsta)
 {
@@ -3375,6 +2021,7 @@ static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata,
 	ifsta->direct_probe_tries = 0;
 	ifsta->auth_tries = 0;
 	ifsta->assoc_tries = 0;
+	netif_tx_stop_all_queues(sdata->dev);
 	netif_carrier_off(sdata->dev);
 }
 
@@ -3388,9 +2035,14 @@ void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
 		return;
 
 	if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
-				IEEE80211_STA_AUTO_BSSID_SEL)) &&
+			     IEEE80211_STA_AUTO_BSSID_SEL)) &&
 	    (ifsta->flags & (IEEE80211_STA_SSID_SET |
-				IEEE80211_STA_AUTO_SSID_SEL))) {
+			     IEEE80211_STA_AUTO_SSID_SEL))) {
+
+		if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
+			ieee80211_set_disassoc(sdata, ifsta, true, true,
+					       WLAN_REASON_DEAUTH_LEAVING);
+
 		set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
 		queue_work(local->hw.workqueue, &ifsta->work);
 	}
@@ -3426,85 +2078,6 @@ static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
 	return 0;
 }
 
-static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
-				     struct ieee80211_if_sta *ifsta)
-{
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_sta_bss *bss, *selected = NULL;
-	int top_rssi = 0, freq;
-
-	spin_lock_bh(&local->sta_bss_lock);
-	freq = local->oper_channel->center_freq;
-	list_for_each_entry(bss, &local->sta_bss_list, list) {
-		if (!(bss->capability & WLAN_CAPABILITY_ESS))
-			continue;
-
-		if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
-			IEEE80211_STA_AUTO_BSSID_SEL |
-			IEEE80211_STA_AUTO_CHANNEL_SEL)) &&
-		    (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
-		     !!sdata->default_key))
-			continue;
-
-		if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
-		    bss->freq != freq)
-			continue;
-
-		if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
-		    memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
-			continue;
-
-		if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
-		    !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
-			continue;
-
-		if (!selected || top_rssi < bss->signal) {
-			selected = bss;
-			top_rssi = bss->signal;
-		}
-	}
-	if (selected)
-		atomic_inc(&selected->users);
-	spin_unlock_bh(&local->sta_bss_lock);
-
-	if (selected) {
-		ieee80211_set_freq(sdata, selected->freq);
-		if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
-			ieee80211_sta_set_ssid(sdata, selected->ssid,
-					       selected->ssid_len);
-		ieee80211_sta_set_bssid(sdata, selected->bssid);
-		ieee80211_sta_def_wmm_params(sdata, selected, 0);
-
-		/* Send out direct probe if no probe resp was received or
-		 * the one we have is outdated
-		 */
-		if (!selected->last_probe_resp ||
-		    time_after(jiffies, selected->last_probe_resp
-					+ IEEE80211_SCAN_RESULT_EXPIRE))
-			ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
-		else
-			ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
-
-		ieee80211_rx_bss_put(local, selected);
-		ieee80211_sta_reset_auth(sdata, ifsta);
-		return 0;
-	} else {
-		if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
-			ifsta->assoc_scan_tries++;
-			if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
-				ieee80211_sta_start_scan(sdata, NULL, 0);
-			else
-				ieee80211_sta_start_scan(sdata, ifsta->ssid,
-							 ifsta->ssid_len);
-			ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
-			set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
-		} else
-			ifsta->state = IEEE80211_STA_MLME_DISABLED;
-	}
-	return -1;
-}
-
-
 static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_if_sta *ifsta)
 {
@@ -3533,7 +2106,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata,
 	printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
 	       sdata->dev->name, print_mac(mac, bssid));
 
-	bss = ieee80211_rx_bss_add(sdata, bssid,
+	bss = ieee80211_rx_bss_add(local, bssid,
 				   local->hw.conf.channel->center_freq,
 				   sdata->u.sta.ssid, sdata->u.sta.ssid_len);
 	if (!bss)
@@ -3762,544 +2335,6 @@ int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
 }
 
 
-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;
-	__le16 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 = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
-			 IEEE80211_FCTL_TODS);
-	if (powersave)
-		fc |= cpu_to_le16(IEEE80211_FCTL_PM);
-	nullfunc->frame_control = 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, skb, 0);
-}
-
-
-static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
-{
-	if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
-	    ieee80211_vif_is_mesh(&sdata->vif))
-		ieee80211_sta_timer((unsigned long)sdata);
-}
-
-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;
-	memset(&wrqu, 0, sizeof(wrqu));
-	wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
-
-	if (local->sta_hw_scanning) {
-		local->sta_hw_scanning = 0;
-		if (ieee80211_hw_config(local))
-			printk(KERN_DEBUG "%s: failed to restore operational "
-			       "channel after scan\n", dev->name);
-		/* Restart STA timer for HW scan case */
-		rcu_read_lock();
-		list_for_each_entry_rcu(sdata, &local->interfaces, list)
-			ieee80211_restart_sta_timer(sdata);
-		rcu_read_unlock();
-
-		goto done;
-	}
-
-	local->sta_sw_scanning = 0;
-	if (ieee80211_hw_config(local))
-		printk(KERN_DEBUG "%s: failed to restore operational "
-		       "channel after scan\n", dev->name);
-
-
-	netif_tx_lock_bh(local->mdev);
-	netif_addr_lock(local->mdev);
-	local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
-	local->ops->configure_filter(local_to_hw(local),
-				     FIF_BCN_PRBRESP_PROMISC,
-				     &local->filter_flags,
-				     local->mdev->mc_count,
-				     local->mdev->mc_list);
-
-	netif_addr_unlock(local->mdev);
-	netif_tx_unlock_bh(local->mdev);
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-		/* Tell AP we're back */
-		if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
-		    sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
-			ieee80211_send_nullfunc(local, sdata, 0);
-
-		ieee80211_restart_sta_timer(sdata);
-
-		netif_wake_queue(sdata->dev);
-	}
-	rcu_read_unlock();
-
-done:
-	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
-		struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-		if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
-		    (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) &&
-		    !ieee80211_sta_active_ibss(sdata)))
-			ieee80211_sta_find_ibss(sdata, 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_supported_band *sband;
-	struct ieee80211_channel *chan;
-	int skip;
-	unsigned long next_delay = 0;
-
-	if (!local->sta_sw_scanning)
-		return;
-
-	switch (local->scan_state) {
-	case SCAN_SET_CHANNEL:
-		/*
-		 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
-		 * after we successfully scanned the last channel of the last
-		 * band (and the last band is supported by the hw)
-		 */
-		if (local->scan_band < IEEE80211_NUM_BANDS)
-			sband = local->hw.wiphy->bands[local->scan_band];
-		else
-			sband = NULL;
-
-		/*
-		 * If we are at an unsupported band and have more bands
-		 * left to scan, advance to the next supported one.
-		 */
-		while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
-			local->scan_band++;
-			sband = local->hw.wiphy->bands[local->scan_band];
-			local->scan_channel_idx = 0;
-		}
-
-		/* if no more bands/channels left, complete scan */
-		if (!sband || local->scan_channel_idx >= sband->n_channels) {
-			ieee80211_scan_completed(local_to_hw(local));
-			return;
-		}
-		skip = 0;
-		chan = &sband->channels[local->scan_channel_idx];
-
-		if (chan->flags & IEEE80211_CHAN_DISABLED ||
-		    (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
-		     chan->flags & IEEE80211_CHAN_NO_IBSS))
-			skip = 1;
-
-		if (!skip) {
-			local->scan_channel = chan;
-			if (ieee80211_hw_config(local)) {
-				printk(KERN_DEBUG "%s: failed to set freq to "
-				       "%d MHz for scan\n", dev->name,
-				       chan->center_freq);
-				skip = 1;
-			}
-		}
-
-		/* advance state machine to next channel/band */
-		local->scan_channel_idx++;
-		if (local->scan_channel_idx >= sband->n_channels) {
-			/*
-			 * scan_band may end up == IEEE80211_NUM_BANDS, but
-			 * we'll catch that case above and complete the scan
-			 * if that is the case.
-			 */
-			local->scan_band++;
-			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:
-		next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
-		local->scan_state = SCAN_SET_CHANNEL;
-
-		if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
-			break;
-		ieee80211_send_probe_req(sdata, NULL, local->scan_ssid,
-					 local->scan_ssid_len);
-		next_delay = IEEE80211_CHANNEL_TIME;
-		break;
-	}
-
-	if (local->sta_sw_scanning)
-		queue_delayed_work(local->hw.workqueue, &local->scan_work,
-				   next_delay);
-}
-
-
-static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
-				    u8 *ssid, size_t ssid_len)
-{
-	struct ieee80211_local *local = scan_sdata->local;
-	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_sw_scanning || local->sta_hw_scanning) {
-		if (local->scan_dev == scan_sdata->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_hw_scanning = 1;
-			local->scan_dev = scan_sdata->dev;
-		}
-		return rc;
-	}
-
-	local->sta_sw_scanning = 1;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-		netif_stop_queue(sdata->dev);
-		if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
-		    (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
-			ieee80211_send_nullfunc(local, sdata, 1);
-	}
-	rcu_read_unlock();
-
-	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_channel_idx = 0;
-	local->scan_band = IEEE80211_BAND_2GHZ;
-	local->scan_dev = scan_sdata->dev;
-
-	netif_addr_lock_bh(local->mdev);
-	local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
-	local->ops->configure_filter(local_to_hw(local),
-				     FIF_BCN_PRBRESP_PROMISC,
-				     &local->filter_flags,
-				     local->mdev->mc_count,
-				     local->mdev->mc_list);
-	netif_addr_unlock_bh(local->mdev);
-
-	/* 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 ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len)
-{
-	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-	struct ieee80211_local *local = sdata->local;
-
-	if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
-		return ieee80211_sta_start_scan(sdata, ssid, ssid_len);
-
-	if (local->sta_sw_scanning || local->sta_hw_scanning) {
-		if (local->scan_dev == sdata->dev)
-			return 0;
-		return -EBUSY;
-	}
-
-	ifsta->scan_ssid_len = ssid_len;
-	if (ssid_len)
-		memcpy(ifsta->scan_ssid, ssid, ssid_len);
-	set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
-	queue_work(local->hw.workqueue, &ifsta->work);
-	return 0;
-}
-
-
-static void ieee80211_sta_add_scan_ies(struct iw_request_info *info,
-				       struct ieee80211_sta_bss *bss,
-				       char **current_ev, char *end_buf)
-{
-	u8 *pos, *end, *next;
-	struct iw_event iwe;
-
-	if (bss == NULL || bss->ies == NULL)
-		return;
-
-	/*
-	 * If needed, fragment the IEs buffer (at IE boundaries) into short
-	 * enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
-	 */
-	pos = bss->ies;
-	end = pos + bss->ies_len;
-
-	while (end - pos > IW_GENERIC_IE_MAX) {
-		next = pos + 2 + pos[1];
-		while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
-			next = next + 2 + next[1];
-
-		memset(&iwe, 0, sizeof(iwe));
-		iwe.cmd = IWEVGENIE;
-		iwe.u.data.length = next - pos;
-		*current_ev = iwe_stream_add_point(info, *current_ev,
-						   end_buf, &iwe, pos);
-
-		pos = next;
-	}
-
-	if (end > pos) {
-		memset(&iwe, 0, sizeof(iwe));
-		iwe.cmd = IWEVGENIE;
-		iwe.u.data.length = end - pos;
-		*current_ev = iwe_stream_add_point(info, *current_ev,
-						   end_buf, &iwe, pos);
-	}
-}
-
-
-static char *
-ieee80211_sta_scan_result(struct ieee80211_local *local,
-			  struct iw_request_info *info,
-			  struct ieee80211_sta_bss *bss,
-			  char *current_ev, char *end_buf)
-{
-	struct iw_event iwe;
-
-	if (time_after(jiffies,
-		       bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
-		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(info, current_ev, end_buf, &iwe,
-					  IW_EV_ADDR_LEN);
-
-	memset(&iwe, 0, sizeof(iwe));
-	iwe.cmd = SIOCGIWESSID;
-	if (bss_mesh_cfg(bss)) {
-		iwe.u.data.length = bss_mesh_id_len(bss);
-		iwe.u.data.flags = 1;
-		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
-						  &iwe, bss_mesh_id(bss));
-	} else {
-		iwe.u.data.length = bss->ssid_len;
-		iwe.u.data.flags = 1;
-		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
-						  &iwe, bss->ssid);
-	}
-
-	if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
-	    || bss_mesh_cfg(bss)) {
-		memset(&iwe, 0, sizeof(iwe));
-		iwe.cmd = SIOCGIWMODE;
-		if (bss_mesh_cfg(bss))
-			iwe.u.mode = IW_MODE_MESH;
-		else 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(info, current_ev, end_buf,
-						  &iwe, IW_EV_UINT_LEN);
-	}
-
-	memset(&iwe, 0, sizeof(iwe));
-	iwe.cmd = SIOCGIWFREQ;
-	iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
-	iwe.u.freq.e = 0;
-	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
-					  IW_EV_FREQ_LEN);
-
-	memset(&iwe, 0, sizeof(iwe));
-	iwe.cmd = SIOCGIWFREQ;
-	iwe.u.freq.m = bss->freq;
-	iwe.u.freq.e = 6;
-	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
-					  IW_EV_FREQ_LEN);
-	memset(&iwe, 0, sizeof(iwe));
-	iwe.cmd = IWEVQUAL;
-	iwe.u.qual.qual = bss->qual;
-	iwe.u.qual.level = bss->signal;
-	iwe.u.qual.noise = bss->noise;
-	iwe.u.qual.updated = local->wstats_flags;
-	current_ev = iwe_stream_add_event(info, 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(info, current_ev, end_buf,
-					  &iwe, "");
-
-	ieee80211_sta_add_scan_ies(info, bss, &current_ev, end_buf);
-
-	if (bss && bss->supp_rates_len > 0) {
-		/* display all supported rates in readable format */
-		char *p = current_ev + iwe_stream_lcp_len(info);
-		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(info, 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(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			memset(&iwe, 0, sizeof(iwe));
-			iwe.cmd = IWEVCUSTOM;
-			sprintf(buf, " Last beacon: %dms ago",
-				jiffies_to_msecs(jiffies - bss->last_update));
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf, &iwe, buf);
-			kfree(buf);
-		}
-	}
-
-	if (bss_mesh_cfg(bss)) {
-		char *buf;
-		u8 *cfg = bss_mesh_cfg(bss);
-		buf = kmalloc(50, GFP_ATOMIC);
-		if (buf) {
-			memset(&iwe, 0, sizeof(iwe));
-			iwe.cmd = IWEVCUSTOM;
-			sprintf(buf, "Mesh network (version %d)", cfg[0]);
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			sprintf(buf, "Path Selection Protocol ID: "
-				"0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
-							cfg[4]);
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			sprintf(buf, "Path Selection Metric ID: "
-				"0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
-							cfg[8]);
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			sprintf(buf, "Congestion Control Mode ID: "
-				"0x%02X%02X%02X%02X", cfg[9], cfg[10],
-							cfg[11], cfg[12]);
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			sprintf(buf, "Channel Precedence: "
-				"0x%02X%02X%02X%02X", cfg[13], cfg[14],
-							cfg[15], cfg[16]);
-			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(info, current_ev,
-							  end_buf,
-							  &iwe, buf);
-			kfree(buf);
-		}
-	}
-
-	return current_ev;
-}
-
-
-int ieee80211_sta_scan_results(struct ieee80211_local *local,
-			       struct iw_request_info *info,
-			       char *buf, size_t len)
-{
-	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(local, info, bss,
-						       current_ev, end_buf);
-	}
-	spin_unlock_bh(&local->sta_bss_lock);
-	return current_ev - buf;
-}
-
-
 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
 {
 	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
@@ -4367,6 +2402,85 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 }
 
 
+static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
+				     struct ieee80211_if_sta *ifsta)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_sta_bss *bss, *selected = NULL;
+	int top_rssi = 0, freq;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	freq = local->oper_channel->center_freq;
+	list_for_each_entry(bss, &local->sta_bss_list, list) {
+		if (!(bss->capability & WLAN_CAPABILITY_ESS))
+			continue;
+
+		if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
+			IEEE80211_STA_AUTO_BSSID_SEL |
+			IEEE80211_STA_AUTO_CHANNEL_SEL)) &&
+		    (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
+		     !!sdata->default_key))
+			continue;
+
+		if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
+		    bss->freq != freq)
+			continue;
+
+		if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
+		    memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
+			continue;
+
+		if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
+		    !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
+			continue;
+
+		if (!selected || top_rssi < bss->signal) {
+			selected = bss;
+			top_rssi = bss->signal;
+		}
+	}
+	if (selected)
+		atomic_inc(&selected->users);
+	spin_unlock_bh(&local->sta_bss_lock);
+
+	if (selected) {
+		ieee80211_set_freq(sdata, selected->freq);
+		if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
+			ieee80211_sta_set_ssid(sdata, selected->ssid,
+					       selected->ssid_len);
+		ieee80211_sta_set_bssid(sdata, selected->bssid);
+		ieee80211_sta_def_wmm_params(sdata, selected);
+
+		/* Send out direct probe if no probe resp was received or
+		 * the one we have is outdated
+		 */
+		if (!selected->last_probe_resp ||
+		    time_after(jiffies, selected->last_probe_resp
+					+ IEEE80211_SCAN_RESULT_EXPIRE))
+			ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
+		else
+			ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
+
+		ieee80211_rx_bss_put(local, selected);
+		ieee80211_sta_reset_auth(sdata, ifsta);
+		return 0;
+	} else {
+		if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
+			ifsta->assoc_scan_tries++;
+			if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
+				ieee80211_sta_start_scan(sdata, NULL, 0);
+			else
+				ieee80211_sta_start_scan(sdata, ifsta->ssid,
+							 ifsta->ssid_len);
+			ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
+			set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+		} else
+			ifsta->state = IEEE80211_STA_MLME_DISABLED;
+	}
+	return -1;
+}
+
+
 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
 {
 	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
@@ -4378,8 +2492,7 @@ int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason
 	    sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
 		return -EINVAL;
 
-	ieee80211_send_deauth(sdata, ifsta, reason);
-	ieee80211_set_disassoc(sdata, ifsta, 1);
+	ieee80211_set_disassoc(sdata, ifsta, true, true, reason);
 	return 0;
 }
 
@@ -4397,8 +2510,7 @@ int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
 	if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
 		return -1;
 
-	ieee80211_send_disassoc(sdata, ifsta, reason);
-	ieee80211_set_disassoc(sdata, ifsta, 0);
+	ieee80211_set_disassoc(sdata, ifsta, false, true, reason);
 	return 0;
 }
 
@@ -4422,3 +2534,102 @@ void ieee80211_notify_mac(struct ieee80211_hw *hw,
 	}
 }
 EXPORT_SYMBOL(ieee80211_notify_mac);
+
+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 ieee80211_local *local = sdata->local;
+	struct ieee80211_if_sta *ifsta;
+	struct sk_buff *skb;
+
+	if (!netif_running(sdata->dev))
+		return;
+
+	if (local->sta_sw_scanning || local->sta_hw_scanning)
+		return;
+
+	if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+		    sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+		    sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
+		return;
+	ifsta = &sdata->u.sta;
+
+	while ((skb = skb_dequeue(&ifsta->skb_queue)))
+		ieee80211_sta_rx_queued_mgmt(sdata, skb);
+
+#ifdef CONFIG_MAC80211_MESH
+	if (ifsta->preq_queue_len &&
+	    time_after(jiffies,
+		       ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
+		mesh_path_start_discovery(sdata);
+#endif
+
+	if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE &&
+	    ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
+	    ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
+	    test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
+		ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
+		return;
+	}
+
+	if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
+		if (ieee80211_sta_config_auth(sdata, 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_STA_MLME_DISABLED:
+		break;
+	case IEEE80211_STA_MLME_DIRECT_PROBE:
+		ieee80211_direct_probe(sdata, ifsta);
+		break;
+	case IEEE80211_STA_MLME_AUTHENTICATE:
+		ieee80211_authenticate(sdata, ifsta);
+		break;
+	case IEEE80211_STA_MLME_ASSOCIATE:
+		ieee80211_associate(sdata, ifsta);
+		break;
+	case IEEE80211_STA_MLME_ASSOCIATED:
+		ieee80211_associated(sdata, ifsta);
+		break;
+	case IEEE80211_STA_MLME_IBSS_SEARCH:
+		ieee80211_sta_find_ibss(sdata, ifsta);
+		break;
+	case IEEE80211_STA_MLME_IBSS_JOINED:
+		ieee80211_sta_merge_ibss(sdata, ifsta);
+		break;
+#ifdef CONFIG_MAC80211_MESH
+	case IEEE80211_STA_MLME_MESH_UP:
+		ieee80211_mesh_housekeeping(sdata, ifsta);
+		break;
+#endif
+	default:
+		WARN_ON(1);
+		break;
+	}
+
+	if (ieee80211_privacy_mismatch(sdata, ifsta)) {
+		printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+		       "mixed-cell disabled - disassociate\n", sdata->dev->name);
+
+		ieee80211_set_disassoc(sdata, ifsta, false, true,
+					WLAN_REASON_UNSPECIFIED);
+	}
+}
+
+void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
+{
+	struct ieee80211_sub_if_data *sdata = local->scan_sdata;
+	struct ieee80211_if_sta *ifsta;
+
+	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+		ifsta = &sdata->u.sta;
+		if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
+		    (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) &&
+		    !ieee80211_sta_active_ibss(sdata)))
+			ieee80211_sta_find_ibss(sdata, ifsta);
+	}
+}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 7e09b30dd39..d0803797902 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1511,22 +1511,95 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
 }
 
 static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
+{
+	struct ieee80211_local *local = rx->local;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
+	int len = rx->skb->len;
+
+	if (!ieee80211_is_action(mgmt->frame_control))
+		return RX_CONTINUE;
+
+	if (!rx->sta)
+		return RX_DROP_MONITOR;
+
+	if (!(rx->flags & IEEE80211_RX_RA_MATCH))
+		return RX_DROP_MONITOR;
+
+	/* all categories we currently handle have action_code */
+	if (len < IEEE80211_MIN_ACTION_SIZE + 1)
+		return RX_DROP_MONITOR;
+
+	/*
+	 * FIXME: revisit this, I'm sure we should handle most
+	 *	  of these frames in other modes as well!
+	 */
+	if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+	    sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+		return RX_DROP_MONITOR;
+
+	switch (mgmt->u.action.category) {
+	case WLAN_CATEGORY_BACK:
+		switch (mgmt->u.action.u.addba_req.action_code) {
+		case WLAN_ACTION_ADDBA_REQ:
+			if (len < (IEEE80211_MIN_ACTION_SIZE +
+				   sizeof(mgmt->u.action.u.addba_req)))
+				return RX_DROP_MONITOR;
+			ieee80211_process_addba_request(local, rx->sta, mgmt, len);
+			break;
+		case WLAN_ACTION_ADDBA_RESP:
+			if (len < (IEEE80211_MIN_ACTION_SIZE +
+				   sizeof(mgmt->u.action.u.addba_resp)))
+				return RX_DROP_MONITOR;
+			ieee80211_process_addba_resp(local, rx->sta, mgmt, len);
+			break;
+		case WLAN_ACTION_DELBA:
+			if (len < (IEEE80211_MIN_ACTION_SIZE +
+				   sizeof(mgmt->u.action.u.delba)))
+				return RX_DROP_MONITOR;
+			ieee80211_process_delba(sdata, rx->sta, mgmt, len);
+			break;
+		}
+		break;
+	case WLAN_CATEGORY_SPECTRUM_MGMT:
+		if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
+			return RX_DROP_MONITOR;
+		switch (mgmt->u.action.u.measurement.action_code) {
+		case WLAN_ACTION_SPCT_MSR_REQ:
+			if (len < (IEEE80211_MIN_ACTION_SIZE +
+				   sizeof(mgmt->u.action.u.measurement)))
+				return RX_DROP_MONITOR;
+			ieee80211_process_measurement_req(sdata, mgmt, len);
+			break;
+		}
+		break;
+	default:
+		return RX_CONTINUE;
+	}
+
+	rx->sta->rx_packets++;
+	dev_kfree_skb(rx->skb);
+	return RX_QUEUED;
+}
+
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 {
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
 
 	if (!(rx->flags & IEEE80211_RX_RA_MATCH))
 		return RX_DROP_MONITOR;
 
-	sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
-	if ((sdata->vif.type == IEEE80211_IF_TYPE_STA ||
-	     sdata->vif.type == IEEE80211_IF_TYPE_IBSS ||
-	     sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) &&
-	    !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
-		ieee80211_sta_rx_mgmt(sdata, rx->skb, rx->status);
-	else
+	if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+	    sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+	    sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
+		return RX_DROP_MONITOR;
+
+	if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 		return RX_DROP_MONITOR;
 
+	ieee80211_sta_rx_mgmt(sdata, rx->skb, rx->status);
 	return RX_QUEUED;
 }
 
@@ -1689,6 +1762,7 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
 		CALL_RXH(ieee80211_rx_h_mesh_fwding);
 	CALL_RXH(ieee80211_rx_h_data)
 	CALL_RXH(ieee80211_rx_h_ctrl)
+	CALL_RXH(ieee80211_rx_h_action)
 	CALL_RXH(ieee80211_rx_h_mgmt)
 
 #undef CALL_RXH
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
new file mode 100644
index 00000000000..010781b806f
--- /dev/null
+++ b/net/mac80211/scan.c
@@ -0,0 +1,933 @@
+/*
+ * Scanning 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:
+ * order BSS list by RSSI(?) ("quality of AP")
+ * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
+ *    SSID)
+ */
+
+#include <linux/wireless.h>
+#include <linux/if_arp.h>
+#include <net/mac80211.h>
+#include <net/iw_handler.h>
+
+#include "ieee80211_i.h"
+#include "mesh.h"
+
+#define IEEE80211_PROBE_DELAY (HZ / 33)
+#define IEEE80211_CHANNEL_TIME (HZ / 33)
+#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
+
+void ieee80211_rx_bss_list_init(struct ieee80211_local *local)
+{
+	spin_lock_init(&local->sta_bss_lock);
+	INIT_LIST_HEAD(&local->sta_bss_list);
+}
+
+void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local)
+{
+	struct ieee80211_sta_bss *bss, *tmp;
+
+	list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
+		ieee80211_rx_bss_put(local, bss);
+}
+
+struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
+		     u8 *ssid, u8 ssid_len)
+{
+	struct ieee80211_sta_bss *bss;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	bss = local->sta_bss_hash[STA_HASH(bssid)];
+	while (bss) {
+		if (!bss_mesh_cfg(bss) &&
+		    !memcmp(bss->bssid, bssid, ETH_ALEN) &&
+		    bss->freq == freq &&
+		    bss->ssid_len == ssid_len &&
+		    (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
+			atomic_inc(&bss->users);
+			break;
+		}
+		bss = bss->hnext;
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local,
+					struct ieee80211_sta_bss *bss)
+{
+	u8 hash_idx;
+
+	if (bss_mesh_cfg(bss))
+		hash_idx = mesh_id_hash(bss_mesh_id(bss),
+					bss_mesh_id_len(bss));
+	else
+		hash_idx = STA_HASH(bss->bssid);
+
+	bss->hnext = local->sta_bss_hash[hash_idx];
+	local->sta_bss_hash[hash_idx] = bss;
+}
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local,
+					struct ieee80211_sta_bss *bss)
+{
+	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;
+	}
+}
+
+struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
+		     u8 *ssid, u8 ssid_len)
+{
+	struct ieee80211_sta_bss *bss;
+
+	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+	if (!bss)
+		return NULL;
+	atomic_set(&bss->users, 2);
+	memcpy(bss->bssid, bssid, ETH_ALEN);
+	bss->freq = freq;
+	if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
+		memcpy(bss->ssid, ssid, ssid_len);
+		bss->ssid_len = ssid_len;
+	}
+
+	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(local, bss);
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+
+#ifdef CONFIG_MAC80211_MESH
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
+			  u8 *mesh_cfg, int freq)
+{
+	struct ieee80211_sta_bss *bss;
+
+	spin_lock_bh(&local->sta_bss_lock);
+	bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
+	while (bss) {
+		if (bss_mesh_cfg(bss) &&
+		    !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
+		    bss->freq == freq &&
+		    mesh_id_len == bss->mesh_id_len &&
+		    (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
+						 mesh_id_len))) {
+			atomic_inc(&bss->users);
+			break;
+		}
+		bss = bss->hnext;
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
+			  u8 *mesh_cfg, int mesh_config_len, int freq)
+{
+	struct ieee80211_sta_bss *bss;
+
+	if (mesh_config_len != MESH_CFG_LEN)
+		return NULL;
+
+	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+	if (!bss)
+		return NULL;
+
+	bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
+	if (!bss->mesh_cfg) {
+		kfree(bss);
+		return NULL;
+	}
+
+	if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
+		bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
+		if (!bss->mesh_id) {
+			kfree(bss->mesh_cfg);
+			kfree(bss);
+			return NULL;
+		}
+		memcpy(bss->mesh_id, mesh_id, mesh_id_len);
+	}
+
+	atomic_set(&bss->users, 2);
+	memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
+	bss->mesh_id_len = mesh_id_len;
+	bss->freq = freq;
+	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(local, bss);
+	spin_unlock_bh(&local->sta_bss_lock);
+	return bss;
+}
+#endif
+
+static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
+{
+	kfree(bss->ies);
+	kfree(bss_mesh_id(bss));
+	kfree(bss_mesh_cfg(bss));
+	kfree(bss);
+}
+
+void ieee80211_rx_bss_put(struct ieee80211_local *local,
+			  struct ieee80211_sta_bss *bss)
+{
+	local_bh_disable();
+	if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
+		local_bh_enable();
+		return;
+	}
+
+	__ieee80211_rx_bss_hash_del(local, bss);
+	list_del(&bss->list);
+	spin_unlock_bh(&local->sta_bss_lock);
+	ieee80211_rx_bss_free(bss);
+}
+
+struct ieee80211_sta_bss *
+ieee80211_bss_info_update(struct ieee80211_local *local,
+			  struct ieee80211_rx_status *rx_status,
+			  struct ieee80211_mgmt *mgmt,
+			  size_t len,
+			  struct ieee802_11_elems *elems,
+			  int freq, bool beacon)
+{
+	struct ieee80211_sta_bss *bss;
+	int clen;
+
+#ifdef CONFIG_MAC80211_MESH
+	if (elems->mesh_config)
+		bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
+				elems->mesh_id_len, elems->mesh_config, freq);
+	else
+#endif
+		bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq,
+					   elems->ssid, elems->ssid_len);
+	if (!bss) {
+#ifdef CONFIG_MAC80211_MESH
+		if (elems->mesh_config)
+			bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id,
+				elems->mesh_id_len, elems->mesh_config,
+				elems->mesh_config_len, freq);
+		else
+#endif
+			bss = ieee80211_rx_bss_add(local, mgmt->bssid, freq,
+						  elems->ssid, elems->ssid_len);
+		if (!bss)
+			return NULL;
+	} 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
+	}
+
+	/* save the ERP value so that it is available at association time */
+	if (elems->erp_info && elems->erp_info_len >= 1) {
+		bss->erp_value = elems->erp_info[0];
+		bss->has_erp_value = 1;
+	}
+
+	bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
+	bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
+
+	if (elems->tim) {
+		struct ieee80211_tim_ie *tim_ie =
+			(struct ieee80211_tim_ie *)elems->tim;
+		bss->dtim_period = tim_ie->dtim_period;
+	}
+
+	/* set default value for buggy APs */
+	if (!elems->tim || bss->dtim_period == 0)
+		bss->dtim_period = 1;
+
+	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;
+	}
+
+	bss->band = rx_status->band;
+
+	bss->timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+	bss->last_update = jiffies;
+	bss->signal = rx_status->signal;
+	bss->noise = rx_status->noise;
+	bss->qual = rx_status->qual;
+	bss->wmm_used = elems->wmm_param || elems->wmm_info;
+
+	if (!beacon)
+		bss->last_probe_resp = jiffies;
+
+	/*
+	 * For probe responses, or if we don't have any information yet,
+	 * use the IEs from the beacon.
+	 */
+	if (!bss->ies || !beacon) {
+		if (bss->ies == NULL || bss->ies_len < elems->total_len) {
+			kfree(bss->ies);
+			bss->ies = kmalloc(elems->total_len, GFP_ATOMIC);
+		}
+		if (bss->ies) {
+			memcpy(bss->ies, elems->ie_start, elems->total_len);
+			bss->ies_len = elems->total_len;
+		} else
+			bss->ies_len = 0;
+	}
+
+	return bss;
+}
+
+ieee80211_rx_result
+ieee80211_sta_rx_scan(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+		      struct ieee80211_rx_status *rx_status)
+{
+	struct ieee80211_mgmt *mgmt;
+	struct ieee80211_sta_bss *bss;
+	u8 *elements;
+	struct ieee80211_channel *channel;
+	size_t baselen;
+	int freq;
+	__le16 fc;
+	bool presp, beacon = false;
+	struct ieee802_11_elems elems;
+
+	if (skb->len < 2)
+		return RX_DROP_UNUSABLE;
+
+	mgmt = (struct ieee80211_mgmt *) skb->data;
+	fc = mgmt->frame_control;
+
+	if (ieee80211_is_ctl(fc))
+		return RX_CONTINUE;
+
+	if (skb->len < 24)
+		return RX_DROP_MONITOR;
+
+	presp = ieee80211_is_probe_resp(fc);
+	if (presp) {
+		/* ignore ProbeResp to foreign address */
+		if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN))
+			return RX_DROP_MONITOR;
+
+		presp = true;
+		elements = mgmt->u.probe_resp.variable;
+		baselen = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
+	} else {
+		beacon = ieee80211_is_beacon(fc);
+		baselen = offsetof(struct ieee80211_mgmt, u.beacon.variable);
+		elements = mgmt->u.beacon.variable;
+	}
+
+	if (!presp && !beacon)
+		return RX_CONTINUE;
+
+	if (baselen > skb->len)
+		return RX_DROP_MONITOR;
+
+	ieee802_11_parse_elems(elements, skb->len - baselen, &elems);
+
+	if (elems.ds_params && elems.ds_params_len == 1)
+		freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
+	else
+		freq = rx_status->freq;
+
+	channel = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
+
+	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+		return RX_DROP_MONITOR;
+
+	bss = ieee80211_bss_info_update(sdata->local, rx_status,
+					mgmt, skb->len, &elems,
+					freq, beacon);
+	ieee80211_rx_bss_put(sdata->local, bss);
+
+	dev_kfree_skb(skb);
+	return RX_QUEUED;
+}
+
+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;
+	__le16 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 = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+			 IEEE80211_FCTL_TODS);
+	if (powersave)
+		fc |= cpu_to_le16(IEEE80211_FCTL_PM);
+	nullfunc->frame_control = 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_tx_skb(sdata, skb, 0);
+}
+
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+{
+	if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+	    ieee80211_vif_is_mesh(&sdata->vif))
+		ieee80211_sta_timer((unsigned long)sdata);
+}
+
+void ieee80211_scan_completed(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata;
+	union iwreq_data wrqu;
+
+	local->last_scan_completed = jiffies;
+	memset(&wrqu, 0, sizeof(wrqu));
+	wireless_send_event(local->scan_sdata->dev, SIOCGIWSCAN, &wrqu, NULL);
+
+	if (local->sta_hw_scanning) {
+		local->sta_hw_scanning = 0;
+		if (ieee80211_hw_config(local))
+			printk(KERN_DEBUG "%s: failed to restore operational "
+			       "channel after scan\n", wiphy_name(local->hw.wiphy));
+		/* Restart STA timer for HW scan case */
+		rcu_read_lock();
+		list_for_each_entry_rcu(sdata, &local->interfaces, list)
+			ieee80211_restart_sta_timer(sdata);
+		rcu_read_unlock();
+
+		goto done;
+	}
+
+	local->sta_sw_scanning = 0;
+	if (ieee80211_hw_config(local))
+		printk(KERN_DEBUG "%s: failed to restore operational "
+		       "channel after scan\n", wiphy_name(local->hw.wiphy));
+
+
+	netif_tx_lock_bh(local->mdev);
+	netif_addr_lock(local->mdev);
+	local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
+	local->ops->configure_filter(local_to_hw(local),
+				     FIF_BCN_PRBRESP_PROMISC,
+				     &local->filter_flags,
+				     local->mdev->mc_count,
+				     local->mdev->mc_list);
+
+	netif_addr_unlock(local->mdev);
+	netif_tx_unlock_bh(local->mdev);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		/* Tell AP we're back */
+		if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
+			if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
+				ieee80211_send_nullfunc(local, sdata, 0);
+				netif_tx_wake_all_queues(sdata->dev);
+			}
+		} else
+			netif_tx_wake_all_queues(sdata->dev);
+
+		ieee80211_restart_sta_timer(sdata);
+	}
+	rcu_read_unlock();
+
+ done:
+	ieee80211_mlme_notify_scan_completed(local);
+}
+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 ieee80211_sub_if_data *sdata = local->scan_sdata;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *chan;
+	int skip;
+	unsigned long next_delay = 0;
+
+	if (!local->sta_sw_scanning)
+		return;
+
+	switch (local->scan_state) {
+	case SCAN_SET_CHANNEL:
+		/*
+		 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
+		 * after we successfully scanned the last channel of the last
+		 * band (and the last band is supported by the hw)
+		 */
+		if (local->scan_band < IEEE80211_NUM_BANDS)
+			sband = local->hw.wiphy->bands[local->scan_band];
+		else
+			sband = NULL;
+
+		/*
+		 * If we are at an unsupported band and have more bands
+		 * left to scan, advance to the next supported one.
+		 */
+		while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
+			local->scan_band++;
+			sband = local->hw.wiphy->bands[local->scan_band];
+			local->scan_channel_idx = 0;
+		}
+
+		/* if no more bands/channels left, complete scan */
+		if (!sband || local->scan_channel_idx >= sband->n_channels) {
+			ieee80211_scan_completed(local_to_hw(local));
+			return;
+		}
+		skip = 0;
+		chan = &sband->channels[local->scan_channel_idx];
+
+		if (chan->flags & IEEE80211_CHAN_DISABLED ||
+		    (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+		     chan->flags & IEEE80211_CHAN_NO_IBSS))
+			skip = 1;
+
+		if (!skip) {
+			local->scan_channel = chan;
+			if (ieee80211_hw_config(local)) {
+				printk(KERN_DEBUG "%s: failed to set freq to "
+				       "%d MHz for scan\n", wiphy_name(local->hw.wiphy),
+				       chan->center_freq);
+				skip = 1;
+			}
+		}
+
+		/* advance state machine to next channel/band */
+		local->scan_channel_idx++;
+		if (local->scan_channel_idx >= sband->n_channels) {
+			/*
+			 * scan_band may end up == IEEE80211_NUM_BANDS, but
+			 * we'll catch that case above and complete the scan
+			 * if that is the case.
+			 */
+			local->scan_band++;
+			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:
+		next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+		local->scan_state = SCAN_SET_CHANNEL;
+
+		if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+			break;
+		ieee80211_send_probe_req(sdata, NULL, local->scan_ssid,
+					 local->scan_ssid_len);
+		next_delay = IEEE80211_CHANNEL_TIME;
+		break;
+	}
+
+	if (local->sta_sw_scanning)
+		queue_delayed_work(local->hw.workqueue, &local->scan_work,
+				   next_delay);
+}
+
+
+int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
+			     u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_local *local = scan_sdata->local;
+	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_sw_scanning || local->sta_hw_scanning) {
+		if (local->scan_sdata == scan_sdata)
+			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_hw_scanning = 1;
+			local->scan_sdata = scan_sdata;
+		}
+		return rc;
+	}
+
+	local->sta_sw_scanning = 1;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
+			if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
+				netif_tx_stop_all_queues(sdata->dev);
+				ieee80211_send_nullfunc(local, sdata, 1);
+			}
+		} else
+			netif_tx_stop_all_queues(sdata->dev);
+	}
+	rcu_read_unlock();
+
+	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_channel_idx = 0;
+	local->scan_band = IEEE80211_BAND_2GHZ;
+	local->scan_sdata = scan_sdata;
+
+	netif_addr_lock_bh(local->mdev);
+	local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
+	local->ops->configure_filter(local_to_hw(local),
+				     FIF_BCN_PRBRESP_PROMISC,
+				     &local->filter_flags,
+				     local->mdev->mc_count,
+				     local->mdev->mc_list);
+	netif_addr_unlock_bh(local->mdev);
+
+	/* 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 ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_sta *ifsta;
+
+	if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+		return ieee80211_sta_start_scan(sdata, ssid, ssid_len);
+
+	/*
+	 * STA has a state machine that might need to defer scanning
+	 * while it's trying to associate/authenticate, therefore we
+	 * queue it up to the state machine in that case.
+	 */
+
+	if (local->sta_sw_scanning || local->sta_hw_scanning) {
+		if (local->scan_sdata == sdata)
+			return 0;
+		return -EBUSY;
+	}
+
+	ifsta = &sdata->u.sta;
+
+	ifsta->scan_ssid_len = ssid_len;
+	if (ssid_len)
+		memcpy(ifsta->scan_ssid, ssid, ssid_len);
+	set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
+	queue_work(local->hw.workqueue, &ifsta->work);
+
+	return 0;
+}
+
+
+static void ieee80211_sta_add_scan_ies(struct iw_request_info *info,
+				       struct ieee80211_sta_bss *bss,
+				       char **current_ev, char *end_buf)
+{
+	u8 *pos, *end, *next;
+	struct iw_event iwe;
+
+	if (bss == NULL || bss->ies == NULL)
+		return;
+
+	/*
+	 * If needed, fragment the IEs buffer (at IE boundaries) into short
+	 * enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
+	 */
+	pos = bss->ies;
+	end = pos + bss->ies_len;
+
+	while (end - pos > IW_GENERIC_IE_MAX) {
+		next = pos + 2 + pos[1];
+		while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
+			next = next + 2 + next[1];
+
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = next - pos;
+		*current_ev = iwe_stream_add_point(info, *current_ev,
+						   end_buf, &iwe, pos);
+
+		pos = next;
+	}
+
+	if (end > pos) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = end - pos;
+		*current_ev = iwe_stream_add_point(info, *current_ev,
+						   end_buf, &iwe, pos);
+	}
+}
+
+
+static char *
+ieee80211_sta_scan_result(struct ieee80211_local *local,
+			  struct iw_request_info *info,
+			  struct ieee80211_sta_bss *bss,
+			  char *current_ev, char *end_buf)
+{
+	struct iw_event iwe;
+	char *buf;
+
+	if (time_after(jiffies,
+		       bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
+		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(info, current_ev, end_buf, &iwe,
+					  IW_EV_ADDR_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWESSID;
+	if (bss_mesh_cfg(bss)) {
+		iwe.u.data.length = bss_mesh_id_len(bss);
+		iwe.u.data.flags = 1;
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, bss_mesh_id(bss));
+	} else {
+		iwe.u.data.length = bss->ssid_len;
+		iwe.u.data.flags = 1;
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, bss->ssid);
+	}
+
+	if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+	    || bss_mesh_cfg(bss)) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = SIOCGIWMODE;
+		if (bss_mesh_cfg(bss))
+			iwe.u.mode = IW_MODE_MESH;
+		else 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(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
+	}
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
+	iwe.u.freq.e = 0;
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = bss->freq;
+	iwe.u.freq.e = 6;
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = IWEVQUAL;
+	iwe.u.qual.qual = bss->qual;
+	iwe.u.qual.level = bss->signal;
+	iwe.u.qual.noise = bss->noise;
+	iwe.u.qual.updated = local->wstats_flags;
+	current_ev = iwe_stream_add_event(info, 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(info, current_ev, end_buf,
+					  &iwe, "");
+
+	ieee80211_sta_add_scan_ies(info, bss, &current_ev, end_buf);
+
+	if (bss->supp_rates_len > 0) {
+		/* display all supported rates in readable format */
+		char *p = current_ev + iwe_stream_lcp_len(info);
+		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(info, current_ev, p,
+					end_buf, &iwe, IW_EV_PARAM_LEN);
+		}
+		current_ev = p;
+	}
+
+	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(info, current_ev, end_buf,
+						  &iwe, buf);
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVCUSTOM;
+		sprintf(buf, " Last beacon: %dms ago",
+			jiffies_to_msecs(jiffies - bss->last_update));
+		iwe.u.data.length = strlen(buf);
+		current_ev = iwe_stream_add_point(info, current_ev,
+						  end_buf, &iwe, buf);
+		kfree(buf);
+	}
+
+	if (bss_mesh_cfg(bss)) {
+		u8 *cfg = bss_mesh_cfg(bss);
+		buf = kmalloc(50, GFP_ATOMIC);
+		if (buf) {
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = IWEVCUSTOM;
+			sprintf(buf, "Mesh network (version %d)", cfg[0]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Path Selection Protocol ID: "
+				"0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+							cfg[4]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Path Selection Metric ID: "
+				"0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+							cfg[8]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Congestion Control Mode ID: "
+				"0x%02X%02X%02X%02X", cfg[9], cfg[10],
+							cfg[11], cfg[12]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Channel Precedence: "
+				"0x%02X%02X%02X%02X", cfg[13], cfg[14],
+							cfg[15], cfg[16]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			kfree(buf);
+		}
+	}
+
+	return current_ev;
+}
+
+
+int ieee80211_sta_scan_results(struct ieee80211_local *local,
+			       struct iw_request_info *info,
+			       char *buf, size_t len)
+{
+	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(local, info, bss,
+						       current_ev, end_buf);
+	}
+	spin_unlock_bh(&local->sta_bss_lock);
+	return current_ev - buf;
+}
diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c
new file mode 100644
index 00000000000..f72bad636d8
--- /dev/null
+++ b/net/mac80211/spectmgmt.c
@@ -0,0 +1,86 @@
+/*
+ * spectrum management
+ *
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ * Copyright 2007-2008, Intel Corporation
+ * Copyright 2008, 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/ieee80211.h>
+#include <net/wireless.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "wme.h"
+
+static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
+					struct ieee80211_msrment_ie *request_ie,
+					const u8 *da, const u8 *bssid,
+					u8 dialog_token)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *msr_report;
+
+	skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
+				sizeof(struct ieee80211_msrment_ie));
+
+	if (!skb) {
+		printk(KERN_ERR "%s: failed to allocate buffer for "
+				"measurement report frame\n", sdata->dev->name);
+		return;
+	}
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
+	memset(msr_report, 0, 24);
+	memcpy(msr_report->da, da, ETH_ALEN);
+	memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
+	memcpy(msr_report->bssid, bssid, ETH_ALEN);
+	msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+						IEEE80211_STYPE_ACTION);
+
+	skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
+	msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
+	msr_report->u.action.u.measurement.action_code =
+				WLAN_ACTION_SPCT_MSR_RPRT;
+	msr_report->u.action.u.measurement.dialog_token = dialog_token;
+
+	msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
+	msr_report->u.action.u.measurement.length =
+			sizeof(struct ieee80211_msrment_ie);
+
+	memset(&msr_report->u.action.u.measurement.msr_elem, 0,
+		sizeof(struct ieee80211_msrment_ie));
+	msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
+	msr_report->u.action.u.measurement.msr_elem.mode |=
+			IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
+	msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
+
+	ieee80211_tx_skb(sdata, skb, 0);
+}
+
+void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
+				       struct ieee80211_mgmt *mgmt,
+				       size_t len)
+{
+	/*
+	 * Ignoring measurement request is spec violation.
+	 * Mandatory measurements must be reported optional
+	 * measurements might be refused or reported incapable
+	 * For now just refuse
+	 * TODO: Answer basic measurement as unmeasured
+	 */
+	ieee80211_send_refuse_measurement_request(sdata,
+			&mgmt->u.action.u.measurement.msr_elem,
+			mgmt->sa, mgmt->bssid,
+			mgmt->u.action.u.measurement.dialog_token);
+}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index f40c060341a..c3a22ab2ad2 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -428,3 +428,187 @@ void ieee80211_iterate_active_interfaces_atomic(
 	rcu_read_unlock();
 }
 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
+
+void ieee802_11_parse_elems(u8 *start, size_t len,
+			    struct ieee802_11_elems *elems)
+{
+	size_t left = len;
+	u8 *pos = start;
+
+	memset(elems, 0, sizeof(*elems));
+	elems->ie_start = start;
+	elems->total_len = len;
+
+	while (left >= 2) {
+		u8 id, elen;
+
+		id = *pos++;
+		elen = *pos++;
+		left -= 2;
+
+		if (elen > left)
+			return;
+
+		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;
+		case WLAN_EID_HT_CAPABILITY:
+			elems->ht_cap_elem = pos;
+			elems->ht_cap_elem_len = elen;
+			break;
+		case WLAN_EID_HT_EXTRA_INFO:
+			elems->ht_info_elem = pos;
+			elems->ht_info_elem_len = elen;
+			break;
+		case WLAN_EID_MESH_ID:
+			elems->mesh_id = pos;
+			elems->mesh_id_len = elen;
+			break;
+		case WLAN_EID_MESH_CONFIG:
+			elems->mesh_config = pos;
+			elems->mesh_config_len = elen;
+			break;
+		case WLAN_EID_PEER_LINK:
+			elems->peer_link = pos;
+			elems->peer_link_len = elen;
+			break;
+		case WLAN_EID_PREQ:
+			elems->preq = pos;
+			elems->preq_len = elen;
+			break;
+		case WLAN_EID_PREP:
+			elems->prep = pos;
+			elems->prep_len = elen;
+			break;
+		case WLAN_EID_PERR:
+			elems->perr = pos;
+			elems->perr_len = elen;
+			break;
+		case WLAN_EID_CHANNEL_SWITCH:
+			elems->ch_switch_elem = pos;
+			elems->ch_switch_elem_len = elen;
+			break;
+		case WLAN_EID_QUIET:
+			if (!elems->quiet_elem) {
+				elems->quiet_elem = pos;
+				elems->quiet_elem_len = elen;
+			}
+			elems->num_of_quiet_elem++;
+			break;
+		case WLAN_EID_COUNTRY:
+			elems->country_elem = pos;
+			elems->country_elem_len = elen;
+			break;
+		case WLAN_EID_PWR_CONSTRAINT:
+			elems->pwr_constr_elem = pos;
+			elems->pwr_constr_elem_len = elen;
+			break;
+		default:
+			break;
+		}
+
+		left -= elen;
+		pos += elen;
+	}
+}
+
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_tx_queue_params qparam;
+	int i;
+
+	if (!local->ops->conf_tx)
+		return;
+
+	memset(&qparam, 0, sizeof(qparam));
+
+	qparam.aifs = 2;
+
+	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+	    !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+		qparam.cw_min = 31;
+	else
+		qparam.cw_min = 15;
+
+	qparam.cw_max = 1023;
+	qparam.txop = 0;
+
+	for (i = 0; i < local_to_hw(local)->queues; i++)
+		local->ops->conf_tx(local_to_hw(local), i, &qparam);
+}
+
+void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+		      int encrypt)
+{
+	skb->dev = sdata->local->mdev;
+	skb_set_mac_header(skb, 0);
+	skb_set_network_header(skb, 0);
+	skb_set_transport_header(skb, 0);
+
+	skb->iif = sdata->dev->ifindex;
+	skb->do_not_encrypt = !encrypt;
+
+	dev_queue_xmit(skb);
+}