mac80211: use common skb queue

IBSS, managed and mesh modes all have an
skb queue, and in the future we want to
also use it in other modes, so make them
all use a common skb queue already.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 906fc2b..56167a3 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -465,21 +465,11 @@
 		cancel_work_sync(&sdata->u.mgd.monitor_work);
 		cancel_work_sync(&sdata->u.mgd.beacon_connection_loss_work);
 
-		/*
-		 * When we get here, the interface is marked down.
-		 * Call synchronize_rcu() to wait for the RX path
-		 * should it be using the interface and enqueuing
-		 * frames at this very time on another CPU.
-		 */
-		synchronize_rcu();
-		skb_queue_purge(&sdata->u.mgd.skb_queue);
 		/* fall through */
 	case NL80211_IFTYPE_ADHOC:
 		if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 			del_timer_sync(&sdata->u.ibss.timer);
 			cancel_work_sync(&sdata->u.ibss.work);
-			synchronize_rcu();
-			skb_queue_purge(&sdata->u.ibss.skb_queue);
 		}
 		/* fall through */
 	case NL80211_IFTYPE_MESH_POINT:
@@ -495,6 +485,15 @@
 		}
 		/* fall through */
 	default:
+		/*
+		 * When we get here, the interface is marked down.
+		 * Call synchronize_rcu() to wait for the RX path
+		 * should it be using the interface and enqueuing
+		 * frames at this very time on another CPU.
+		 */
+		synchronize_rcu();
+		skb_queue_purge(&sdata->skb_queue);
+
 		if (local->scan_sdata == sdata)
 			ieee80211_scan_cancel(local);
 
@@ -721,6 +720,8 @@
 	/* only monitor differs */
 	sdata->dev->type = ARPHRD_ETHER;
 
+	skb_queue_head_init(&sdata->skb_queue);
+
 	switch (type) {
 	case NL80211_IFTYPE_AP:
 		skb_queue_head_init(&sdata->u.ap.ps_bc_buf);