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

32 files changed, 3216 insertions, 2149 deletions

diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 3503a3d2131..0e3ab88bb70 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -9,6 +9,7 @@ mac80211-y := \
 	wpa.o \
 	scan.o \
 	ht.o agg-tx.o agg-rx.o \
+	ibss.o \
 	mlme.o \
 	iface.o \
 	rate.o \
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 3112bfd441b..a95affc9462 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -129,7 +129,6 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
 				      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;
@@ -151,8 +150,9 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
 	if (sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
+		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
+
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_ACTION);
 
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 1232d9f01ca..1df116d4d6e 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -49,7 +49,6 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
 					 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;
@@ -69,8 +68,8 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
 	if (sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
+		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
 
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_ACTION);
@@ -132,9 +131,24 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
 
 	state = &sta->ampdu_mlme.tid_state_tx[tid];
 
-	if (local->hw.ampdu_queues)
-		ieee80211_stop_queue(&local->hw, sta->tid_to_tx_q[tid]);
+	if (local->hw.ampdu_queues) {
+		if (initiator) {
+			/*
+			 * Stop the AC queue to avoid issues where we send
+			 * unaggregated frames already before the delba.
+			 */
+			ieee80211_stop_queue_by_reason(&local->hw,
+				local->hw.queues + sta->tid_to_tx_q[tid],
+				IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+		}
 
+		/*
+		 * Pretend the driver woke the queue, just in case
+		 * it disabled it before the session was stopped.
+		 */
+		ieee80211_wake_queue(
+			&local->hw, local->hw.queues + sta->tid_to_tx_q[tid]);
+	}
 	*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
 		(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
 
@@ -144,8 +158,6 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
 	/* HW shall not deny going back to legacy */
 	if (WARN_ON(ret)) {
 		*state = HT_AGG_STATE_OPERATIONAL;
-		if (local->hw.ampdu_queues)
-			ieee80211_wake_queue(&local->hw, sta->tid_to_tx_q[tid]);
 	}
 
 	return ret;
@@ -189,14 +201,19 @@ static void sta_addba_resp_timer_expired(unsigned long data)
 	spin_unlock_bh(&sta->lock);
 }
 
+static inline int ieee80211_ac_from_tid(int tid)
+{
+	return ieee802_1d_to_ac[tid & 7];
+}
+
 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 = 0;
+	int i, qn = -1, ret = 0;
+	u16 start_seq_num;
 
 	if (WARN_ON(!local->ops->ampdu_action))
 		return -EINVAL;
@@ -209,6 +226,13 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 	       ra, tid);
 #endif /* CONFIG_MAC80211_HT_DEBUG */
 
+	if (hw->ampdu_queues && ieee80211_ac_from_tid(tid) == 0) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+		printk(KERN_DEBUG "rejecting on voice AC\n");
+#endif
+		return -EINVAL;
+	}
+
 	rcu_read_lock();
 
 	sta = sta_info_get(local, ra);
@@ -217,7 +241,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 		printk(KERN_DEBUG "Could not find the station\n");
 #endif
 		ret = -ENOENT;
-		goto exit;
+		goto unlock;
 	}
 
 	/*
@@ -230,11 +254,13 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 	    sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 	    sta->sdata->vif.type != NL80211_IFTYPE_AP) {
 		ret = -EINVAL;
-		goto exit;
+		goto unlock;
 	}
 
 	spin_lock_bh(&sta->lock);
 
+	sdata = sta->sdata;
+
 	/* 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;
@@ -252,6 +278,42 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 		goto err_unlock_sta;
 	}
 
+	if (hw->ampdu_queues) {
+		spin_lock(&local->queue_stop_reason_lock);
+		/* reserve a new queue for this session */
+		for (i = 0; i < local->hw.ampdu_queues; i++) {
+			if (local->ampdu_ac_queue[i] < 0) {
+				qn = i;
+				local->ampdu_ac_queue[qn] =
+					ieee80211_ac_from_tid(tid);
+				break;
+			}
+		}
+		spin_unlock(&local->queue_stop_reason_lock);
+
+		if (qn < 0) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+			printk(KERN_DEBUG "BA request denied - "
+			       "queue unavailable for tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+			ret = -ENOSPC;
+			goto err_unlock_sta;
+		}
+
+		/*
+		 * If we successfully allocate the session, we can't have
+		 * anything going on on the queue this TID maps into, so
+		 * stop it for now. This is a "virtual" stop using the same
+		 * mechanism that drivers will use.
+		 *
+		 * XXX: queue up frames for this session in the sta_info
+		 *	struct instead to avoid hitting all other STAs.
+		 */
+		ieee80211_stop_queue_by_reason(
+			&local->hw, hw->queues + qn,
+			IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+	}
+
 	/* prepare A-MPDU MLME for Tx aggregation */
 	sta->ampdu_mlme.tid_tx[tid] =
 			kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
@@ -262,8 +324,9 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 					tid);
 #endif
 		ret = -ENOMEM;
-		goto err_unlock_sta;
+		goto err_return_queue;
 	}
+
 	/* Tx timer */
 	sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
 			sta_addba_resp_timer_expired;
@@ -271,49 +334,25 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 			(unsigned long)&sta->timer_to_tid[tid];
 	init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
 
-	if (hw->ampdu_queues) {
-		/* 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];
 
 	ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
 				       &sta->sta, 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 */
-		if (hw->ampdu_queues)
-			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;
+		goto err_free;
 	}
+	sta->tid_to_tx_q[tid] = qn;
 
-	/* Will put all the packets in the new SW queue */
-	if (hw->ampdu_queues)
-		ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
 	spin_unlock_bh(&sta->lock);
 
 	/* send an addBA request */
@@ -322,7 +361,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 			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,
@@ -334,15 +372,24 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 #ifdef CONFIG_MAC80211_HT_DEBUG
 	printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
 #endif
-	goto exit;
+	goto unlock;
 
-err_unlock_queue:
+ err_free:
 	kfree(sta->ampdu_mlme.tid_tx[tid]);
 	sta->ampdu_mlme.tid_tx[tid] = NULL;
-	ret = -EBUSY;
-err_unlock_sta:
+ err_return_queue:
+	if (qn >= 0) {
+		/* We failed, so start queue again right away. */
+		ieee80211_wake_queue_by_reason(hw, hw->queues + qn,
+			IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+		/* give queue back to pool */
+		spin_lock(&local->queue_stop_reason_lock);
+		local->ampdu_ac_queue[qn] = -1;
+		spin_unlock(&local->queue_stop_reason_lock);
+	}
+ err_unlock_sta:
 	spin_unlock_bh(&sta->lock);
-exit:
+ unlock:
 	rcu_read_unlock();
 	return ret;
 }
@@ -375,7 +422,7 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 	state = &sta->ampdu_mlme.tid_state_tx[tid];
 	spin_lock_bh(&sta->lock);
 
-	if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+	if (WARN_ON(!(*state & HT_ADDBA_REQUESTED_MSK))) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
 		printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
 				*state);
@@ -385,7 +432,8 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 		return;
 	}
 
-	WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
+	if (WARN_ON(*state & HT_ADDBA_DRV_READY_MSK))
+		goto out;
 
 	*state |= HT_ADDBA_DRV_READY_MSK;
 
@@ -393,9 +441,18 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
 #ifdef CONFIG_MAC80211_HT_DEBUG
 		printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
 #endif
-		if (hw->ampdu_queues)
-			ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+		if (hw->ampdu_queues) {
+			/*
+			 * Wake up this queue, we stopped it earlier,
+			 * this will in turn wake the entire AC.
+			 */
+			ieee80211_wake_queue_by_reason(hw,
+				hw->queues + sta->tid_to_tx_q[tid],
+				IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+		}
 	}
+
+ out:
 	spin_unlock_bh(&sta->lock);
 	rcu_read_unlock();
 }
@@ -485,7 +542,6 @@ 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;
 
 	if (tid >= STA_TID_NUM) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
@@ -527,19 +583,19 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
 		ieee80211_send_delba(sta->sdata, ra, tid,
 			WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
 
-	if (hw->ampdu_queues) {
-		agg_queue = sta->tid_to_tx_q[tid];
-		ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
+	spin_lock_bh(&sta->lock);
 
-		/* 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
+	if (*state & HT_AGG_STATE_INITIATOR_MSK &&
+	    hw->ampdu_queues) {
+		/*
+		 * Wake up this queue, we stopped it earlier,
+		 * this will in turn wake the entire AC.
 		 */
-		netif_schedule_queue(netdev_get_tx_queue(local->mdev,
-							 agg_queue));
+		ieee80211_wake_queue_by_reason(hw,
+			hw->queues + sta->tid_to_tx_q[tid],
+			IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
 	}
-	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]);
@@ -613,12 +669,21 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
 #endif /* CONFIG_MAC80211_HT_DEBUG */
 	if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
 			== WLAN_STATUS_SUCCESS) {
+		u8 curstate = *state;
+
 		*state |= HT_ADDBA_RECEIVED_MSK;
-		sta->ampdu_mlme.addba_req_num[tid] = 0;
 
-		if (*state == HT_AGG_STATE_OPERATIONAL &&
-		    local->hw.ampdu_queues)
-			ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+		if (hw->ampdu_queues && *state != curstate &&
+		    *state == HT_AGG_STATE_OPERATIONAL) {
+			/*
+			 * Wake up this queue, we stopped it earlier,
+			 * this will in turn wake the entire AC.
+			 */
+			ieee80211_wake_queue_by_reason(hw,
+				hw->queues + sta->tid_to_tx_q[tid],
+				IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+		}
+		sta->ampdu_mlme.addba_req_num[tid] = 0;
 
 		if (local->ops->ampdu_action) {
 			(void)local->ops->ampdu_action(hw,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c8d969be440..c43129efc3b 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -341,11 +341,15 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 	sinfo->filled = STATION_INFO_INACTIVE_TIME |
 			STATION_INFO_RX_BYTES |
 			STATION_INFO_TX_BYTES |
+			STATION_INFO_RX_PACKETS |
+			STATION_INFO_TX_PACKETS |
 			STATION_INFO_TX_BITRATE;
 
 	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 	sinfo->rx_bytes = sta->rx_bytes;
 	sinfo->tx_bytes = sta->tx_bytes;
+	sinfo->rx_packets = sta->rx_packets;
+	sinfo->tx_packets = sta->tx_packets;
 
 	if (sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 		sinfo->filled |= STATION_INFO_SIGNAL;
@@ -1180,45 +1184,45 @@ static int set_mgmt_extra_ie_sta(struct ieee80211_sub_if_data *sdata,
 				 u8 subtype, u8 *ies, size_t ies_len)
 {
 	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
 	switch (subtype) {
 	case IEEE80211_STYPE_PROBE_REQ >> 4:
 		if (local->ops->hw_scan)
 			break;
-		kfree(ifsta->ie_probereq);
-		ifsta->ie_probereq = ies;
-		ifsta->ie_probereq_len = ies_len;
+		kfree(ifmgd->ie_probereq);
+		ifmgd->ie_probereq = ies;
+		ifmgd->ie_probereq_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_PROBE_RESP >> 4:
-		kfree(ifsta->ie_proberesp);
-		ifsta->ie_proberesp = ies;
-		ifsta->ie_proberesp_len = ies_len;
+		kfree(ifmgd->ie_proberesp);
+		ifmgd->ie_proberesp = ies;
+		ifmgd->ie_proberesp_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_AUTH >> 4:
-		kfree(ifsta->ie_auth);
-		ifsta->ie_auth = ies;
-		ifsta->ie_auth_len = ies_len;
+		kfree(ifmgd->ie_auth);
+		ifmgd->ie_auth = ies;
+		ifmgd->ie_auth_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_ASSOC_REQ >> 4:
-		kfree(ifsta->ie_assocreq);
-		ifsta->ie_assocreq = ies;
-		ifsta->ie_assocreq_len = ies_len;
+		kfree(ifmgd->ie_assocreq);
+		ifmgd->ie_assocreq = ies;
+		ifmgd->ie_assocreq_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_REASSOC_REQ >> 4:
-		kfree(ifsta->ie_reassocreq);
-		ifsta->ie_reassocreq = ies;
-		ifsta->ie_reassocreq_len = ies_len;
+		kfree(ifmgd->ie_reassocreq);
+		ifmgd->ie_reassocreq = ies;
+		ifmgd->ie_reassocreq_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_DEAUTH >> 4:
-		kfree(ifsta->ie_deauth);
-		ifsta->ie_deauth = ies;
-		ifsta->ie_deauth_len = ies_len;
+		kfree(ifmgd->ie_deauth);
+		ifmgd->ie_deauth = ies;
+		ifmgd->ie_deauth_len = ies_len;
 		return 0;
 	case IEEE80211_STYPE_DISASSOC >> 4:
-		kfree(ifsta->ie_disassoc);
-		ifsta->ie_disassoc = ies;
-		ifsta->ie_disassoc_len = ies_len;
+		kfree(ifmgd->ie_disassoc);
+		ifmgd->ie_disassoc = ies;
+		ifmgd->ie_disassoc_len = ies_len;
 		return 0;
 	}
 
@@ -1248,7 +1252,6 @@ static int ieee80211_set_mgmt_extra_ie(struct wiphy *wiphy,
 
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
 		ret = set_mgmt_extra_ie_sta(sdata, params->subtype,
 					    ies, ies_len);
 		break;
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index c5421930172..e3420329f4e 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -94,31 +94,31 @@ IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
 IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
 IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
 
-/* STA/IBSS attributes */
-IEEE80211_IF_FILE(state, u.sta.state, DEC);
-IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
-IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
-IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
-IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
-IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
-IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
-IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
-IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
-IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
-IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
-IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
-IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
+/* STA attributes */
+IEEE80211_IF_FILE(state, u.mgd.state, DEC);
+IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
+IEEE80211_IF_FILE(prev_bssid, u.mgd.prev_bssid, MAC);
+IEEE80211_IF_FILE(ssid_len, u.mgd.ssid_len, SIZE);
+IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
+IEEE80211_IF_FILE(ap_capab, u.mgd.ap_capab, HEX);
+IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
+IEEE80211_IF_FILE(extra_ie_len, u.mgd.extra_ie_len, SIZE);
+IEEE80211_IF_FILE(auth_tries, u.mgd.auth_tries, DEC);
+IEEE80211_IF_FILE(assoc_tries, u.mgd.assoc_tries, DEC);
+IEEE80211_IF_FILE(auth_algs, u.mgd.auth_algs, HEX);
+IEEE80211_IF_FILE(auth_alg, u.mgd.auth_alg, DEC);
+IEEE80211_IF_FILE(auth_transaction, u.mgd.auth_transaction, DEC);
 
 static ssize_t ieee80211_if_fmt_flags(
 	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 {
 	return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
-		 sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
-		 sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
-		 sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
-		 sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
-		 sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
-		 sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
+		 sdata->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
 		 sdata->vif.bss_conf.use_cts_prot ? "CTS prot\n" : "");
 }
 __IEEE80211_IF_FILE(flags);
@@ -283,9 +283,11 @@ static void add_files(struct ieee80211_sub_if_data *sdata)
 #endif
 		break;
 	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
 		add_sta_files(sdata);
 		break;
+	case NL80211_IFTYPE_ADHOC:
+		/* XXX */
+		break;
 	case NL80211_IFTYPE_AP:
 		add_ap_files(sdata);
 		break;
@@ -418,9 +420,11 @@ static void del_files(struct ieee80211_sub_if_data *sdata)
 #endif
 		break;
 	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
 		del_sta_files(sdata);
 		break;
+	case NL80211_IFTYPE_ADHOC:
+		/* XXX */
+		break;
 	case NL80211_IFTYPE_AP:
 		del_ap_files(sdata);
 		break;
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 82ea0b63a38..4e3c72f20de 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -17,6 +17,7 @@
 #include <net/wireless.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
+#include "rate.h"
 
 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
 				       struct ieee80211_ht_cap *ht_cap_ie,
@@ -93,7 +94,9 @@ u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_bss_ht_conf ht;
+	struct sta_info *sta;
 	u32 changed = 0;
 	bool enable_ht = true, ht_changed;
 	enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
@@ -136,6 +139,16 @@ u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
 	if (ht_changed) {
                 /* channel_type change automatically detected */
 		ieee80211_hw_config(local, 0);
+
+		rcu_read_lock();
+
+		sta = sta_info_get(local, ifmgd->bssid);
+		if (sta)
+			rate_control_rate_update(local, sband, sta,
+						 IEEE80211_RC_HT_CHANGED);
+
+		rcu_read_unlock();
+
         }
 
 	/* disable HT */
@@ -169,7 +182,6 @@ void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
 			  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;
@@ -190,8 +202,9 @@ void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
 	if (sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
-	else
-		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
+		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
+
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_ACTION);
 
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
new file mode 100644
index 00000000000..a96ce9dfc6b
--- /dev/null
+++ b/net/mac80211/ibss.c
@@ -0,0 +1,905 @@
+/*
+ * IBSS mode implementation
+ * Copyright 2003-2008, Jouni Malinen <j@w1.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>
+ * Copyright 2009, 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/delay.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+
+#include "ieee80211_i.h"
+#include "rate.h"
+
+#define IEEE80211_SCAN_INTERVAL (2 * HZ)
+#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
+#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
+
+#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_MERGE_DELAY 0x400000
+#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+
+#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
+
+
+static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
+					struct ieee80211_mgmt *mgmt,
+					size_t len)
+{
+	u16 auth_alg, auth_transaction, status_code;
+
+	if (len < 24 + 6)
+		return;
+
+	auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+	auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+	status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+	/*
+	 * IEEE 802.11 standard does not require authentication in IBSS
+	 * networks and most implementations do not seem to use it.
+	 * However, try to reply to authentication attempts if someone
+	 * has actually implemented this.
+	 */
+	if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1)
+		ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0,
+				    sdata->u.ibss.bssid, 0);
+}
+
+static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
+				     const u8 *bssid, const int beacon_int,
+				     const int freq,
+				     const size_t supp_rates_len,
+				     const u8 *supp_rates,
+				     const u16 capability)
+{
+	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+	struct ieee80211_local *local = sdata->local;
+	int res = 0, rates, i, j;
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u8 *pos;
+	struct ieee80211_supported_band *sband;
+	union iwreq_data wrqu;
+
+	if (local->ops->reset_tsf) {
+		/* Reset own TSF to allow time synchronization work. */
+		local->ops->reset_tsf(local_to_hw(local));
+	}
+
+	if ((ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) &&
+	   memcmp(ifibss->bssid, bssid, ETH_ALEN) == 0)
+		return res;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+		       "response\n", sdata->dev->name);
+		return -ENOMEM;
+	}
+
+	if (!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) {
+		/* Remove possible STA entries from other IBSS networks. */
+		sta_info_flush_delayed(sdata);
+	}
+
+	memcpy(ifibss->bssid, bssid, ETH_ALEN);
+	res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
+	if (res)
+		return res;
+
+	local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10;
+
+	sdata->drop_unencrypted = capability &
+		WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+
+	res = ieee80211_set_freq(sdata, freq);
+
+	if (res)
+		return res;
+
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+	/* Build IBSS probe response */
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	mgmt = (struct ieee80211_mgmt *)
+		skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+	memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_PROBE_RESP);
+	memset(mgmt->da, 0xff, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
+	mgmt->u.beacon.beacon_int =
+		cpu_to_le16(local->hw.conf.beacon_int);
+	mgmt->u.beacon.capab_info = cpu_to_le16(capability);
+
+	pos = skb_put(skb, 2 + ifibss->ssid_len);
+	*pos++ = WLAN_EID_SSID;
+	*pos++ = ifibss->ssid_len;
+	memcpy(pos, ifibss->ssid, ifibss->ssid_len);
+
+	rates = supp_rates_len;
+	if (rates > 8)
+		rates = 8;
+	pos = skb_put(skb, 2 + rates);
+	*pos++ = WLAN_EID_SUPP_RATES;
+	*pos++ = rates;
+	memcpy(pos, supp_rates, rates);
+
+	if (sband->band == IEEE80211_BAND_2GHZ) {
+		pos = skb_put(skb, 2 + 1);
+		*pos++ = WLAN_EID_DS_PARAMS;
+		*pos++ = 1;
+		*pos++ = ieee80211_frequency_to_channel(freq);
+	}