package/kernel/mac80211/patches/subsys/359-mac80211-un-schedule-TXQs-on-powersave-start.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Tue, 19 Mar 2019 11:36:12 +0100
   3 Subject: [PATCH] mac80211: un-schedule TXQs on powersave start
   4
   5 Once a station enters powersave, its queues should not be returned by
   6 ieee80211_next_txq() anymore. They will be re-scheduled again after the
   7 station has woken up again
   8
   9 Fixes: 1866760096bf4 ("mac80211: Add TXQ scheduling API")
  10 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  11 ---
  12
  13 --- a/net/mac80211/rx.c
  14 +++ b/net/mac80211/rx.c
  15 @@ -1568,7 +1568,15 @@ static void sta_ps_start(struct sta_info
  16                 return;
  17
  18         for (tid = 0; tid < IEEE80211_NUM_TIDS; tid++) {
  19 -               if (txq_has_queue(sta->sta.txq[tid]))
  20 +               struct ieee80211_txq *txq = sta->sta.txq[tid];
  21 +               struct txq_info *txqi = to_txq_info(txq);
  22 +
  23 +               spin_lock(&local->active_txq_lock[txq->ac]);
  24 +               if (!list_empty(&txqi->schedule_order))
  25 +                       list_del_init(&txqi->schedule_order);
  26 +               spin_unlock(&local->active_txq_lock[txq->ac]);
  27 +
  28 +               if (txq_has_queue(txq))
  29                         set_bit(tid, &sta->txq_buffered_tids);
  30                 else
  31                         clear_bit(tid, &sta->txq_buffered_tids);