package/mac80211/patches/520-mac80211_drv_tim_override.patch

   1 --- a/include/net/mac80211.h
   2 +++ b/include/net/mac80211.h
   3 @@ -2216,6 +2216,18 @@ static inline int ieee80211_sta_ps_trans
   4  #define IEEE80211_TX_STATUS_HEADROOM   13
   5
   6  /**
   7 + * ieee80211_sta_set_tim - set the TIM bit for a sleeping station
   8 + *
   9 + * If a driver buffers frames for a powersave station instead of passing
  10 + * them back to mac80211 for retransmission, the station needs to be told
  11 + * to wake up using the TIM bitmap in the beacon.
  12 + *
  13 + * This function sets the station's TIM bit - it will be cleared when the
  14 + * station wakes up.
  15 + */
  16 +void ieee80211_sta_set_tim(struct ieee80211_sta *sta);
  17 +
  18 +/**
  19   * ieee80211_tx_status - transmit status callback
  20   *
  21   * Call this function for all transmitted frames after they have been
  22 --- a/net/mac80211/sta_info.c
  23 +++ b/net/mac80211/sta_info.c
  24 @@ -609,7 +609,8 @@ static bool sta_info_cleanup_expire_buff
  25  #endif
  26                 dev_kfree_skb(skb);
  27
  28 -               if (skb_queue_empty(&sta->ps_tx_buf))
  29 +               if (skb_queue_empty(&sta->ps_tx_buf) &&
  30 +                   !test_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF))
  31                         sta_info_clear_tim_bit(sta);
  32         }
  33
  34 @@ -902,6 +903,7 @@ void ieee80211_sta_ps_deliver_wakeup(str
  35         struct ieee80211_local *local = sdata->local;
  36         int sent, buffered;
  37
  38 +       clear_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
  39         if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
  40                 drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
  41
  42 @@ -994,3 +996,12 @@ void ieee80211_sta_block_awake(struct ie
  43                 ieee80211_queue_work(hw, &sta->drv_unblock_wk);
  44  }
  45  EXPORT_SYMBOL(ieee80211_sta_block_awake);
  46 +
  47 +void ieee80211_sta_set_tim(struct ieee80211_sta *pubsta)
  48 +{
  49 +       struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
  50 +
  51 +       set_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
  52 +       sta_info_set_tim_bit(sta);
  53 +}
  54 +EXPORT_SYMBOL(ieee80211_sta_set_tim);
  55 --- a/net/mac80211/sta_info.h
  56 +++ b/net/mac80211/sta_info.h
  57 @@ -43,6 +43,8 @@
  58   *     be in the queues
  59   * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
  60   *     station in power-save mode, reply when the driver unblocks.
  61 + * @WLAN_STA_PS_DRIVER_BUF: Station has frames pending in driver internal
  62 + *     buffers. Automatically cleared on station wake-up.
  63   */
  64  enum ieee80211_sta_info_flags {
  65         WLAN_STA_AUTH           = 1<<0,
  66 @@ -58,6 +60,7 @@ enum ieee80211_sta_info_flags {
  67         WLAN_STA_BLOCK_BA       = 1<<11,
  68         WLAN_STA_PS_DRIVER      = 1<<12,
  69         WLAN_STA_PSPOLL         = 1<<13,
  70 +       WLAN_STA_PS_DRIVER_BUF  = 1<<14,
  71  };
  72
  73  #define STA_TID_NUM 16