package/kernel/mac80211/patches/319-v4.17-0001-mac80211-drop-frames-with-unexpected-DS-bits-from-fa.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 23 Feb 2018 09:59:35 +0100
   3 Subject: [PATCH] mac80211: drop frames with unexpected DS bits from
   4  fast-rx to slow path
   5
   6 Fixes rx for 4-addr packets in AP mode
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 ---
  10
  11 --- a/net/mac80211/rx.c
  12 +++ b/net/mac80211/rx.c
  13 @@ -3928,7 +3928,7 @@ static bool ieee80211_invoke_fast_rx(str
  14         if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |
  15                                               IEEE80211_FCTL_TODS)) !=
  16             fast_rx->expected_ds_bits)
  17 -               goto drop;
  18 +               return false;
  19
  20         /* assign the key to drop unencrypted frames (later)
  21          * and strip the IV/MIC if necessary