package/kernel/mac80211/patches/334-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/cfg.c
   9 +++ b/net/mac80211/cfg.c
  10 @@ -160,7 +160,6 @@ static int ieee80211_change_iface(struct
  11         if (type == NL80211_IFTYPE_AP_VLAN &&
  12             params && params->use_4addr == 0) {
  13                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  14 -               ieee80211_check_fast_rx_iface(sdata);
  15         } else if (type == NL80211_IFTYPE_STATION &&
  16                    params && params->use_4addr >= 0) {
  17                 sdata->u.mgd.use_4addr = params->use_4addr;
  18 @@ -1574,7 +1573,6 @@ static int ieee80211_change_station(stru
  19                         }
  20
  21                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
  22 -                       __ieee80211_check_fast_rx_iface(vlansdata);
  23                 }
  24
  25                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
  26 --- a/net/mac80211/rx.c
  27 +++ b/net/mac80211/rx.c
  28 @@ -3738,10 +3738,6 @@ void ieee80211_check_fast_rx(struct sta_
  29
  30         switch (sdata->vif.type) {
  31         case NL80211_IFTYPE_STATION:
  32 -               /* 4-addr is harder to deal with, later maybe */
  33 -               if (sdata->u.mgd.use_4addr)
  34 -                       goto clear;
  35 -
  36                 if (sta->sta.tdls) {
  37                         fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
  38                         fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
  39 @@ -3754,6 +3750,13 @@ void ieee80211_check_fast_rx(struct sta_
  40                                 cpu_to_le16(IEEE80211_FCTL_FROMDS);
  41                 }
  42
  43 +               if (sdata->u.mgd.use_4addr && !sta->sta.tdls) {
  44 +                       fastrx.expected_ds_bits |=
  45 +                               cpu_to_le16(IEEE80211_FCTL_TODS);
  46 +                       fastrx.da_offs = offsetof(struct ieee80211_hdr, addr3);
  47 +                       fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
  48 +               }
  49 +
  50                 if (!sdata->u.mgd.powersave)
  51                     break;
  52