[ 3.5.y.z extended stable ] Patch "mac80211: Only process mesh config header on frames that" has been added to staging queue

Herton Ronaldo Krzesinski herton.krzesinski at canonical.com
Wed Dec 5 22:29:35 UTC 2012

This is a note to let you know that I have just added a patch titled

    mac80211: Only process mesh config header on frames that

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



>From 78f74332b671f5dc3c0622265a6e649ac95f7462 Mon Sep 17 00:00:00 2001
From: Javier Cardona <javier at cozybit.com>
Date: Wed, 24 Oct 2012 12:43:30 -0700
Subject: [PATCH] mac80211: Only process mesh config header on frames that
X-Extended-Stable: 3.5

commit 555cb715be8ef98b8ec362b23dfc254d432a35b1 upstream.

Doing otherwise is wrong, and may wreak havoc on the mpp tables,
specially if the frame is encrypted.

Reported-by: Chaoxing Lin <Chaoxing.Lin at ultra-3eti.com>
Signed-off-by: Javier Cardona <javier at cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
 net/mac80211/rx.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 965e6ec..33c49d5 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1900,7 +1900,8 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	    mesh_rmc_check(hdr->addr3, mesh_hdr, rx->sdata))
 		return RX_DROP_MONITOR;

-	if (!ieee80211_is_data(hdr->frame_control))
+	if (!ieee80211_is_data(hdr->frame_control) ||
+	    !(status->rx_flags & IEEE80211_RX_RA_MATCH))
 		return RX_CONTINUE;

 	if (!mesh_hdr->ttl)
@@ -1944,9 +1945,6 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	skb_set_queue_mapping(skb, q);

-	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
-		goto out;
 	if (!--mesh_hdr->ttl) {
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_ttl);
 		return RX_DROP_MONITOR;

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