git.openwrt.org Git - openwrt/staging/linusw.git/blob

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 2 Jul 2021 06:57:53 +0200
   3 Subject: [PATCH] mac80211: fix enabling 4-address mode on a sta vif after
   4  assoc
   5
   6 Notify the driver about the 4-address mode change and also send a nulldata
   7 packet to the AP to notify it about the change
   8
   9 Fixes: 1ff4e8f2dec8 ("mac80211: notify the driver when a sta uses 4-address mode")
  10 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  11 ---
  12
  13 --- a/net/mac80211/cfg.c
  14 +++ b/net/mac80211/cfg.c
  15 @@ -152,6 +152,8 @@ static int ieee80211_change_iface(struct
  16                                   struct vif_params *params)
  17  {
  18         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  19 +       struct ieee80211_local *local = sdata->local;
  20 +       struct sta_info *sta;
  21         int ret;
  22
  23         ret = ieee80211_if_change_type(sdata, type);
  24 @@ -162,7 +164,24 @@ static int ieee80211_change_iface(struct
  25                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  26                 ieee80211_check_fast_rx_iface(sdata);
  27         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
  28 +               struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
  29 +
  30 +               if (params->use_4addr == ifmgd->use_4addr)
  31 +                       return 0;
  32 +
  33                 sdata->u.mgd.use_4addr = params->use_4addr;
  34 +               if (!ifmgd->associated)
  35 +                       return 0;
  36 +
  37 +               mutex_lock(&local->sta_mtx);
  38 +               sta = sta_info_get(sdata, ifmgd->bssid);
  39 +               if (sta)
  40 +                       drv_sta_set_4addr(local, sdata, &sta->sta,
  41 +                                         params->use_4addr);
  42 +               mutex_unlock(&local->sta_mtx);
  43 +
  44 +               if (params->use_4addr)
  45 +                       ieee80211_send_4addr_nullfunc(local, sdata);
  46         }
  47
  48         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
  49 --- a/net/mac80211/ieee80211_i.h
  50 +++ b/net/mac80211/ieee80211_i.h
  51 @@ -2215,6 +2215,8 @@ void ieee80211_dynamic_ps_timer(struct t
  52  void ieee80211_send_nullfunc(struct ieee80211_local *local,
  53                              struct ieee80211_sub_if_data *sdata,
  54                              bool powersave);
  55 +void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
  56 +                                  struct ieee80211_sub_if_data *sdata);
  57  void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
  58                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
  59
  60 --- a/net/mac80211/mlme.c
  61 +++ b/net/mac80211/mlme.c
  62 @@ -1115,8 +1115,8 @@ void ieee80211_send_nullfunc(struct ieee
  63         ieee80211_tx_skb(sdata, skb);
  64  }
  65
  66 -static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
  67 -                                         struct ieee80211_sub_if_data *sdata)
  68 +void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
  69 +                                  struct ieee80211_sub_if_data *sdata)
  70  {
  71         struct sk_buff *skb;
  72         struct ieee80211_hdr *nullfunc;