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[6.1,2/2] wifi: mac80211: do not drop packets smaller than the LLC-SNAP header on fast-rx

Message ID 20221007090509.18503-2-nbd@nbd.name (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series [6.1,1/2] wifi: cfg80211: fix ieee80211_data_to_8023_exthdr handling of small packets | expand

Commit Message

Felix Fietkau Oct. 7, 2022, 9:05 a.m. UTC 
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>
---
 net/mac80211/rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 9183e5f1ad29..589521717c35 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4709,7 +4709,7 @@  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);