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mac80211: drop frames with unexpected DS bits from fast-rx to slow path

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[ Upstream commit b323ac19b7734a1c464b2785a082ee50bccd3b91 ]

Fixes rx for 4-addr packets in AP mode. These may be used for setting
up a 4-addr link for stations that are allowed to do so.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felix Fietkau 2018-02-23 10:06:03 +01:00 committed by Greg Kroah-Hartman
parent dff5da4724
commit 3d82155f85
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/rx.c
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@ -3928,7 +3928,7 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |
IEEE80211_FCTL_TODS)) !=
fast_rx->expected_ds_bits)
goto drop;
return false;
/* assign the key to drop unencrypted frames (later)
* and strip the IV/MIC if necessary