package/kernel/mac80211/patches/subsys/326-mac80211-notify-the-driver-when-a-sta-uses-4-address.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 21 Aug 2020 05:51:58 +0200
   3 Subject: [PATCH] mac80211: notify the driver when a sta uses 4-address
   4  mode
   5
   6 This is needed for encapsulation offload of 4-address mode packets
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 ---
  10
  11 --- a/include/net/mac80211.h
  12 +++ b/include/net/mac80211.h
  13 @@ -3843,6 +3843,8 @@ enum ieee80211_reconfig_type {
  14   *     This callback may sleep.
  15   * @update_vif_config: Update virtual interface offload flags
  16   *     This callback may sleep.
  17 + * @sta_set_4addr: Called to notify the driver when a station starts/stops using
  18 + *     4-address mode
  19   */
  20  struct ieee80211_ops {
  21         void (*tx)(struct ieee80211_hw *hw,
  22 @@ -4156,6 +4158,8 @@ struct ieee80211_ops {
  23                                 struct ieee80211_sta *sta, u8 tids);
  24         void (*update_vif_offload)(struct ieee80211_hw *hw,
  25                                    struct ieee80211_vif *vif);
  26 +       void (*sta_set_4addr)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
  27 +                             struct ieee80211_sta *sta, bool enabled);
  28  };
  29
  30  /**
  31 --- a/net/mac80211/cfg.c
  32 +++ b/net/mac80211/cfg.c
  33 @@ -1696,6 +1696,7 @@ static int ieee80211_change_station(stru
  34
  35                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
  36                         __ieee80211_check_fast_rx_iface(vlansdata);
  37 +                       drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
  38                 }
  39
  40                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
  41 --- a/net/mac80211/driver-ops.h
  42 +++ b/net/mac80211/driver-ops.h
  43 @@ -1399,4 +1399,18 @@ static inline void drv_update_vif_offloa
  44         trace_drv_return_void(local);
  45  }
  46
  47 +static inline void drv_sta_set_4addr(struct ieee80211_local *local,
  48 +                                    struct ieee80211_sub_if_data *sdata,
  49 +                                    struct ieee80211_sta *sta, bool enabled)
  50 +{
  51 +       sdata = get_bss_sdata(sdata);
  52 +       if (!check_sdata_in_driver(sdata))
  53 +               return;
  54 +
  55 +       trace_drv_sta_set_4addr(local, sdata, sta, enabled);
  56 +       if (local->ops->sta_set_4addr)
  57 +               local->ops->sta_set_4addr(&local->hw, &sdata->vif, sta, enabled);
  58 +       trace_drv_return_void(local);
  59 +}
  60 +
  61  #endif /* __MAC80211_DRIVER_OPS */
  62 --- a/net/mac80211/mlme.c
  63 +++ b/net/mac80211/mlme.c
  64 @@ -3523,6 +3523,9 @@ static bool ieee80211_assoc_success(stru
  65                 goto out;
  66         }
  67
  68 +       if (sdata->wdev.use_4addr)
  69 +               drv_sta_set_4addr(local, sdata, &sta->sta, true);
  70 +
  71         mutex_unlock(&sdata->local->sta_mtx);
  72
  73         /*
  74 --- a/net/mac80211/trace.h
  75 +++ b/net/mac80211/trace.h
  76 @@ -2740,6 +2740,33 @@ DEFINE_EVENT(local_sdata_addr_evt, drv_u
  77         TP_ARGS(local, sdata)
  78  );
  79
  80 +TRACE_EVENT(drv_sta_set_4addr,
  81 +       TP_PROTO(struct ieee80211_local *local,
  82 +                struct ieee80211_sub_if_data *sdata,
  83 +                struct ieee80211_sta *sta, bool enabled),
  84 +
  85 +       TP_ARGS(local, sdata, sta, enabled),
  86 +
  87 +       TP_STRUCT__entry(
  88 +               LOCAL_ENTRY
  89 +               VIF_ENTRY
  90 +               STA_ENTRY
  91 +               __field(bool, enabled)
  92 +       ),
  93 +
  94 +       TP_fast_assign(
  95 +               LOCAL_ASSIGN;
  96 +               VIF_ASSIGN;
  97 +               STA_ASSIGN;
  98 +               __entry->enabled = enabled;
  99 +       ),
 100 +
 101 +       TP_printk(
 102 +               LOCAL_PR_FMT  VIF_PR_FMT  STA_PR_FMT " enabled:%d",
 103 +               LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->enabled
 104 +       )
 105 +);
 106 +
 107  #endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
 108
 109  #undef TRACE_INCLUDE_PATH