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

6 files changed, 16 insertions, 36 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 421eaa6..56c24ca 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -965,6 +965,10 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 
 	mutex_lock(&sdata->u.ibss.mtx);
 
+	sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
+	memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
+	sdata->u.ibss.ssid_len = 0;
+
 	active_ibss = ieee80211_sta_active_ibss(sdata);
 
 	if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
@@ -999,8 +1003,6 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 	kfree_skb(skb);
 
 	skb_queue_purge(&sdata->skb_queue);
-	memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
-	sdata->u.ibss.ssid_len = 0;
 
 	del_timer_sync(&sdata->u.ibss.timer);
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 2025af5..090b0ec 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -775,9 +775,6 @@ struct ieee80211_local {
 
 	int tx_headroom; /* required headroom for hardware/radiotap */
 
-	/* count for keys needing tailroom space allocation */
-	int crypto_tx_tailroom_needed_cnt;
-
 	/* Tasklet and skb queue to process calls from IRQ mode. All frames
 	 * added to skb_queue will be processed, but frames in
 	 * skb_queue_unreliable may be dropped if the total length of these
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 31afd712..f825e2f 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -101,11 +101,6 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
 
 	if (!ret) {
 		key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
-
-		if (!((key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) ||
-		      (key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)))
-			key->local->crypto_tx_tailroom_needed_cnt--;
-
 		return 0;
 	}
 
@@ -161,10 +156,6 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
 			  key->conf.keyidx, sta ? sta->addr : bcast_addr, ret);
 
 	key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
-
-	if (!((key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) ||
-	      (key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)))
-		key->local->crypto_tx_tailroom_needed_cnt++;
 }
 
 void ieee80211_key_removed(struct ieee80211_key_conf *key_conf)
@@ -403,10 +394,8 @@ static void __ieee80211_key_destroy(struct ieee80211_key *key)
 		ieee80211_aes_key_free(key->u.ccmp.tfm);
 	if (key->conf.cipher == WLAN_CIPHER_SUITE_AES_CMAC)
 		ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm);
-	if (key->local) {
+	if (key->local)
 		ieee80211_debugfs_key_remove(key);
-		key->local->crypto_tx_tailroom_needed_cnt--;
-	}
 
 	kfree(key);
 }
@@ -468,8 +457,6 @@ int ieee80211_key_link(struct ieee80211_key *key,
 
 	ieee80211_debugfs_key_add(key);
 
-	key->local->crypto_tx_tailroom_needed_cnt++;
-
 	ret = ieee80211_key_enable_hw_accel(key);
 
 	mutex_unlock(&sdata->local->key_mtx);
@@ -511,12 +498,8 @@ void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata)
 
 	mutex_lock(&sdata->local->key_mtx);
 
-	sdata->local->crypto_tx_tailroom_needed_cnt = 0;
-
-	list_for_each_entry(key, &sdata->key_list, list) {
-		sdata->local->crypto_tx_tailroom_needed_cnt++;
+	list_for_each_entry(key, &sdata->key_list, list)
 		ieee80211_key_enable_hw_accel(key);
-	}
 
 	mutex_unlock(&sdata->local->key_mtx);
 }
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 456cccf..d595265 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -232,9 +232,6 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
 		WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
 	}
 
-	ieee80211_stop_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
-
 	/* channel_type change automatically detected */
 	ieee80211_hw_config(local, 0);
 
@@ -248,9 +245,6 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
 		rcu_read_unlock();
 	}
 
-	ieee80211_wake_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
-
 	ht_opmode = le16_to_cpu(hti->operation_mode);
 
 	/* if bss configuration changed store the new one */
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 64e0f75..3104c84 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1480,7 +1480,12 @@ static int ieee80211_skb_resize(struct ieee80211_local *local,
 {
 	int tail_need = 0;
 
-	if (may_encrypt && local->crypto_tx_tailroom_needed_cnt) {
+	/*
+	 * This could be optimised, devices that do full hardware
+	 * crypto (including TKIP MMIC) need no tailroom... But we
+	 * have no drivers for such devices currently.
+	 */
+	if (may_encrypt) {
 		tail_need = IEEE80211_ENCRYPT_TAILROOM;
 		tail_need -= skb_tailroom(skb);
 		tail_need = max_t(int, tail_need, 0);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 88a565f..98fa8eb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3406,11 +3406,11 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 	i = 0;
 	if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
 		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
-			request->ssids[i].ssid_len = nla_len(attr);
-			if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
+			if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
 				err = -EINVAL;
 				goto out_free;
 			}
+			request->ssids[i].ssid_len = nla_len(attr);
 			memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
 			i++;
 		}
@@ -3572,12 +3572,11 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
 	if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
 		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
 				    tmp) {
-			request->ssids[i].ssid_len = nla_len(attr);
-			if (request->ssids[i].ssid_len >
-			    IEEE80211_MAX_SSID_LEN) {
+			if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
 				err = -EINVAL;
 				goto out_free;
 			}
+			request->ssids[i].ssid_len = nla_len(attr);
 			memcpy(request->ssids[i].ssid, nla_data(attr),
 			       nla_len(attr));
 			i++;