| From | Herton Ronaldo Krzesinski <> | Subject | [PATCH 007/241] mac80211: don't inspect Sequence Control field on control frames | Date | Thu, 13 Dec 2012 11:56:12 -0200 |
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3.5.7.2 -stable review patch. If anyone has any objections, please let me know.
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From: Javier Cardona <javier@cozybit.com>
commit f7fbf70ee9db6da6033ae50d100e017ac1f26555 upstream.
Per IEEE Std. 802.11-2012, Sec 8.2.4.4.1, the sequence Control field is not present in control frames. We noticed this problem when processing Block Ack Requests.
Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Javier Lopez <jlopex@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> --- net/mac80211/rx.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 33c49d5..4e4fc93 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1465,6 +1465,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) hdr = (struct ieee80211_hdr *)rx->skb->data; fc = hdr->frame_control; + + if (ieee80211_is_ctl(fc)) + return RX_CONTINUE; + sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; -- 1.7.9.5
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