package/mac80211/patches/541-ath9k_sw_retry_reduce.patch

   1 --- a/drivers/net/wireless/ath/ath9k/xmit.c
   2 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
   3 @@ -264,14 +264,17 @@ static void ath_tid_drain(struct ath_sof
   4  }
   5
   6  static void ath_tx_set_retry(struct ath_softc *sc, struct ath_txq *txq,
   7 -                            struct sk_buff *skb)
   8 +                            struct sk_buff *skb, int count)
   9  {
  10         struct ath_frame_info *fi = get_frame_info(skb);
  11         struct ath_buf *bf = fi->bf;
  12         struct ieee80211_hdr *hdr;
  13 +       int prev = fi->retries;
  14
  15         TX_STAT_INC(txq->axq_qnum, a_retries);
  16 -       if (fi->retries++ > 0)
  17 +       fi->retries += count;
  18 +
  19 +       if (prev > 0)
  20                 return;
  21
  22         hdr = (struct ieee80211_hdr *)skb->data;
  23 @@ -387,6 +390,7 @@ static void ath_tx_complete_aggr(struct
  24         int nframes;
  25         u8 tidno;
  26         bool flush = !!(ts->ts_status & ATH9K_TX_FLUSH);
  27 +       int i, retries;
  28
  29         skb = bf->bf_mpdu;
  30         hdr = (struct ieee80211_hdr *)skb->data;
  31 @@ -395,6 +399,10 @@ static void ath_tx_complete_aggr(struct
  32
  33         memcpy(rates, tx_info->control.rates, sizeof(rates));
  34
  35 +       retries = ts->ts_longretry + 1;
  36 +       for (i = 0; i < ts->ts_rateindex; i++)
  37 +               retries += rates[i].count;
  38 +
  39         rcu_read_lock();
  40
  41         sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
  42 @@ -481,7 +489,8 @@ static void ath_tx_complete_aggr(struct
  43                                 txpending = 1;
  44                         } else if (fi->retries < ATH_MAX_SW_RETRIES) {
  45                                 if (txok || !an->sleeping)
  46 -                                       ath_tx_set_retry(sc, txq, bf->bf_mpdu);
  47 +                                       ath_tx_set_retry(sc, txq, bf->bf_mpdu,
  48 +                                                        retries);
  49
  50                                 txpending = 1;
  51                         } else {
  52 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
  53 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
  54 @@ -546,7 +546,7 @@ struct ath_ant_comb {
  55  #define DEFAULT_CACHELINE       32
  56  #define ATH_REGCLASSIDS_MAX     10
  57  #define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
  58 -#define ATH_MAX_SW_RETRIES      10
  59 +#define ATH_MAX_SW_RETRIES      20
  60  #define ATH_CHAN_MAX            255
  61
  62  #define ATH_TXPOWER_MAX         100     /* .5 dBm units */