[PATCH] mac80211: Fix unresolved mesh frames queued without valid control.vif

[Javier Cardona <javier@cozybit.com>]

Mesh frames that could not be immediately resolved were queued with a NULL
info->control.vif.  This patch moves the call to mesh_nexthop_lookup closer to
the point where it is handed over to ieee80211_tx().  This ensures that the
unresolved frames are ready to be sent once the path is resolved.
---
 net/mac80211/tx.c |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index b9f5be6..56dc8df 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1413,14 +1413,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
 
 	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
 
-	if (ieee80211_vif_is_mesh(&sdata->vif) &&
-	    ieee80211_is_data(hdr->frame_control)) {
-		if (!is_multicast_ether_addr(hdr->addr1))
-			if (mesh_nexthop_lookup(skb, sdata)) {
-				dev_put(sdata->dev);
-				return;
-			}
-	} else if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
+	if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
 		int hdrlen;
 		u16 len_rthdr;
 
@@ -1477,6 +1470,15 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
 
 	info->control.vif = &sdata->vif;
 
+	if (ieee80211_vif_is_mesh(&sdata->vif) &&
+	    ieee80211_is_data(hdr->frame_control) &&
+		!is_multicast_ether_addr(hdr->addr1))
+			if (mesh_nexthop_lookup(skb, sdata)) {
+				/* skb queued: don't free */
+				dev_put(sdata->dev);
+				return;
+			}
+
 	ieee80211_select_queue(local, skb);
 	ieee80211_tx(sdata, skb, false);
 	dev_put(sdata->dev);
-- 
1.5.4.3