package/kernel/mac80211/patches/561-ath9k_split_tid_queue.patch

   1 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
   2 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
   3 @@ -241,6 +241,7 @@ struct ath_buf {
   4  struct ath_atx_tid {
   5         struct list_head list;
   6         struct sk_buff_head buf_q;
   7 +       struct sk_buff_head retry_q;
   8         struct ath_node *an;
   9         struct ath_atx_ac *ac;
  10         unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
  11 --- a/drivers/net/wireless/ath/ath9k/xmit.c
  12 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
  13 @@ -170,12 +170,18 @@ static void ath_txq_skb_done(struct ath_
  14
  15  static bool ath_tid_has_buffered(struct ath_atx_tid *tid)
  16  {
  17 -       return !skb_queue_empty(&tid->buf_q);
  18 +       return !skb_queue_empty(&tid->buf_q) || !skb_queue_empty(&tid->retry_q);
  19  }
  20
  21  static struct sk_buff *ath_tid_dequeue(struct ath_atx_tid *tid)
  22  {
  23 -       return __skb_dequeue(&tid->buf_q);
  24 +       struct sk_buff *skb;
  25 +
  26 +       skb = __skb_dequeue(&tid->retry_q);
  27 +       if (!skb)
  28 +               skb = __skb_dequeue(&tid->buf_q);
  29 +
  30 +       return skb;
  31  }
  32
  33  static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
  34 @@ -593,7 +599,7 @@ static void ath_tx_complete_aggr(struct
  35                 if (an->sleeping)
  36                         ieee80211_sta_set_buffered(sta, tid->tidno, true);
  37
  38 -               skb_queue_splice(&bf_pending, &tid->buf_q);
  39 +               skb_queue_splice_tail(&bf_pending, &tid->retry_q);
  40                 if (!an->sleeping) {
  41                         ath_tx_queue_tid(txq, tid);
  42
  43 @@ -833,7 +839,10 @@ ath_tx_get_tid_subframe(struct ath_softc
  44         u16 seqno;
  45
  46         while (1) {
  47 -               *q = &tid->buf_q;
  48 +               *q = &tid->retry_q;
  49 +               if (skb_queue_empty(*q))
  50 +                       *q = &tid->buf_q;
  51 +
  52                 skb = skb_peek(*q);
  53                 if (!skb)
  54                         break;
  55 @@ -2608,6 +2617,7 @@ void ath_tx_node_init(struct ath_softc *
  56                 tid->paused    = false;
  57                 tid->active        = false;
  58                 __skb_queue_head_init(&tid->buf_q);
  59 +               __skb_queue_head_init(&tid->retry_q);
  60                 acno = TID_TO_WME_AC(tidno);
  61                 tid->ac = &an->ac[acno];
  62         }