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wifi: mac80211: do not drop packets smaller than the LLC-SNAP header on fast-rx

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Since STP TCN frames are only 7 bytes, the pskb_may_pull call returns an error.
Instead of dropping those packets, bump them back to the slow path for proper
processing.

Fixes: 49ddf8e6e234 ("mac80211: add fast-rx path")
Reported-by: Chad Monroe <chad.monroe@smartrg.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2022-10-07 11:05:09 +02:00 committed by Johannes Berg
parent 6b430f72b2
commit f5369dcf5c
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/rx.c
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@ -4708,7 +4708,7 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
if (!(status->rx_flags & IEEE80211_RX_AMSDU)) {
if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
goto drop;
return false;
payload = (void *)(skb->data + snap_offs);