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mac80211: Only process mesh config header on frames that RA_MATCH

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

Cc: stable@vger.kernel.org
Reported-by: Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Javier Cardona 2012-10-24 12:43:30 -07:00 committed by Johannes Berg
parent 9690fb169b
commit 555cb715be
1 changed files with 2 additions and 4 deletions
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6
net/mac80211/rx.c
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@ -1897,7 +1897,8 @@ 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)
@ -1941,9 +1942,6 @@ 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;