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mac80211: Fix Public Action frame RX in AP mode 

[ Upstream commit 1ec7bae8be ]

Public Action frames use special rules for how the BSSID field (Address
3) is set. A wildcard BSSID is used in cases where the transmitter and
recipient are not members of the same BSS. As such, we need to accept
Public Action frames with wildcard BSSID.

Commit db8e173245 ("mac80211: ignore frames between TDLS peers when
operating as AP") added a rule that drops Action frames to TDLS-peers
based on an Action frame having different DA (Address 1) and BSSID
(Address 3) values. This is not correct since it misses the possibility
of BSSID being a wildcard BSSID in which case the Address 1 would not
necessarily match.

Fix this by allowing mac80211 to accept wildcard BSSID in an Action
frame when in AP mode.

Fixes: db8e173245 ("mac80211: ignore frames between TDLS peers when operating as AP")
Cc: stable@vger.kernel.org
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
wifi-calibration
Jouni Malinen 2016-03-01 00:29:00 +02:00 committed by Sasha Levin
parent 87e0016ccb
commit 7ce08a0c99
1 changed files with 1 additions and 0 deletions
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net/mac80211/rx.c
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@ -3377,6 +3377,7 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx,
return false;
/* ignore action frames to TDLS-peers */
if (ieee80211_is_action(hdr->frame_control) &&
!is_broadcast_ether_addr(bssid) &&
!ether_addr_equal(bssid, hdr->addr1))
return false;
}