package/kernel/mac80211/patches/subsys/343-v6.1-wifi-mac80211-fix-decap-offload-for-stations-on-AP_V.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Wed, 28 Sep 2022 13:50:34 +0200
   3 Subject: [PATCH] wifi: mac80211: fix decap offload for stations on AP_VLAN
   4  interfaces
   5
   6 Since AP_VLAN interfaces are not passed to the driver, check offload_flags
   7 on the bss vif instead.
   8
   9 Reported-by: Howard Hsu <howard-yh.hsu@mediatek.com>
  10 Fixes: 80a915ec4427 ("mac80211: add rx decapsulation offload support")
  11 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  12 ---
  13
  14 --- a/net/mac80211/rx.c
  15 +++ b/net/mac80211/rx.c
  16 @@ -4267,6 +4267,7 @@ void ieee80211_check_fast_rx(struct sta_
  17                 .vif_type = sdata->vif.type,
  18                 .control_port_protocol = sdata->control_port_protocol,
  19         }, *old, *new = NULL;
  20 +       u32 offload_flags;
  21         bool set_offload = false;
  22         bool assign = false;
  23         bool offload;
  24 @@ -4382,10 +4383,10 @@ void ieee80211_check_fast_rx(struct sta_
  25         if (assign)
  26                 new = kmemdup(&fastrx, sizeof(fastrx), GFP_KERNEL);
  27
  28 -       offload = assign &&
  29 -                 (sdata->vif.offload_flags & IEEE80211_OFFLOAD_DECAP_ENABLED);
  30 +       offload_flags = get_bss_sdata(sdata)->vif.offload_flags;
  31 +       offload = offload_flags & IEEE80211_OFFLOAD_DECAP_ENABLED;
  32
  33 -       if (offload)
  34 +       if (assign && offload)
  35                 set_offload = !test_and_set_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);
  36         else
  37                 set_offload = test_and_clear_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);