package/kernel/mac80211/patches/subsys/325-wifi-mac80211-introduce-ieee80211_refresh_tx_agg_ses.patch

   1 From: Ryder Lee <ryder.lee@mediatek.com>
   2 Date: Sat, 18 Feb 2023 01:50:05 +0800
   3 Subject: [PATCH] wifi: mac80211: introduce
   4  ieee80211_refresh_tx_agg_session_timer()
   5
   6 This allows low level drivers to refresh the tx agg session timer, based on
   7 querying stats from the firmware usually. Especially for some mt76 devices
   8 support .net_fill_forward_path would bypass mac80211, which leads to tx BA
   9 session timeout for certain clients.
  10
  11 Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
  12 ---
  13
  14 --- a/include/net/mac80211.h
  15 +++ b/include/net/mac80211.h
  16 @@ -5970,6 +5970,18 @@ void ieee80211_queue_delayed_work(struct
  17                                   unsigned long delay);
  18
  19  /**
  20 + * ieee80211_refresh_tx_agg_session_timer - Refresh a tx agg session timer.
  21 + * @sta: the station for which to start a BA session
  22 + * @tid: the TID to BA on.
  23 + *
  24 + * This function allows low level driver to refresh tx agg session timer
  25 + * to maintain BA session, the session level will still be managed by the
  26 + * mac80211.
  27 + */
  28 +void ieee80211_refresh_tx_agg_session_timer(struct ieee80211_sta *sta,
  29 +                                           u16 tid);
  30 +
  31 +/**
  32   * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
  33   * @sta: the station for which to start a BA session
  34   * @tid: the TID to BA on.
  35 --- a/net/mac80211/agg-tx.c
  36 +++ b/net/mac80211/agg-tx.c
  37 @@ -552,6 +552,23 @@ void ieee80211_tx_ba_session_handle_star
  38         ieee80211_send_addba_with_timeout(sta, tid_tx);
  39  }
  40
  41 +void ieee80211_refresh_tx_agg_session_timer(struct ieee80211_sta *pubsta,
  42 +                                           u16 tid)
  43 +{
  44 +       struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
  45 +       struct tid_ampdu_tx *tid_tx;
  46 +
  47 +       if (WARN_ON_ONCE(tid >= IEEE80211_NUM_TIDS))
  48 +               return;
  49 +
  50 +       tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
  51 +       if (!tid_tx)
  52 +               return;
  53 +
  54 +       tid_tx->last_tx = jiffies;
  55 +}
  56 +EXPORT_SYMBOL(ieee80211_refresh_tx_agg_session_timer);
  57 +
  58  /*
  59   * After accepting the AddBA Response we activated a timer,
  60   * resetting it after each frame that we send.