package/kernel/mac80211/patches/319-v4.17-0004-mac80211-support-station-4-addr-mode-fast-rx.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 23 Feb 2018 10:05:08 +0100
   3 Subject: [PATCH] mac80211: support station 4-addr mode fast-rx
   4
   5 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   6 ---
   7
   8 --- a/net/mac80211/rx.c
   9 +++ b/net/mac80211/rx.c
  10 @@ -3738,10 +3738,6 @@ void ieee80211_check_fast_rx(struct sta_
  11
  12         switch (sdata->vif.type) {
  13         case NL80211_IFTYPE_STATION:
  14 -               /* 4-addr is harder to deal with, later maybe */
  15 -               if (sdata->u.mgd.use_4addr)
  16 -                       goto clear;
  17 -
  18                 if (sta->sta.tdls) {
  19                         fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
  20                         fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
  21 @@ -3754,6 +3750,13 @@ void ieee80211_check_fast_rx(struct sta_
  22                                 cpu_to_le16(IEEE80211_FCTL_FROMDS);
  23                 }
  24
  25 +               if (sdata->u.mgd.use_4addr && !sta->sta.tdls) {
  26 +                       fastrx.expected_ds_bits |=
  27 +                               cpu_to_le16(IEEE80211_FCTL_TODS);
  28 +                       fastrx.da_offs = offsetof(struct ieee80211_hdr, addr3);
  29 +                       fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
  30 +               }
  31 +
  32                 if (!sdata->u.mgd.powersave)
  33                     break;
  34