package/mac80211/patches/540-ath9k_sw_retry_reduce.patch

   1 --- a/drivers/net/wireless/ath/ath9k/xmit.c
   2 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
   3 @@ -248,13 +248,16 @@ 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 ieee80211_hdr *hdr;
  12 +       int prev = fi->retries;
  13
  14         TX_STAT_INC(txq->axq_qnum, a_retries);
  15 -       if (fi->retries++ > 0)
  16 +       fi->retries += count;
  17 +
  18 +       if (prev > 0)
  19                 return;
  20
  21         hdr = (struct ieee80211_hdr *)skb->data;
  22 @@ -359,6 +362,7 @@ static void ath_tx_complete_aggr(struct
  23         int nframes;
  24         u8 tidno;
  25         bool clear_filter;
  26 +       int i, retries;
  27
  28         skb = bf->bf_mpdu;
  29         hdr = (struct ieee80211_hdr *)skb->data;
  30 @@ -367,6 +371,10 @@ static void ath_tx_complete_aggr(struct
  31
  32         memcpy(rates, tx_info->control.rates, sizeof(rates));
  33
  34 +       retries = ts->ts_longretry + 1;
  35 +       for (i = 0; i < ts->ts_rateindex; i++)
  36 +               retries += rates[i].count;
  37 +
  38         rcu_read_lock();
  39
  40         sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
  41 @@ -451,7 +459,8 @@ static void ath_tx_complete_aggr(struct
  42                         } else if (fi->retries < ATH_MAX_SW_RETRIES) {
  43                                 if (!(ts->ts_status & ATH9K_TXERR_FILT) ||
  44                                     !an->sleeping)
  45 -                                       ath_tx_set_retry(sc, txq, bf->bf_mpdu);
  46 +                                       ath_tx_set_retry(sc, txq, bf->bf_mpdu,
  47 +                                                        retries);
  48
  49                                 clear_filter = true;
  50                                 txpending = 1;
  51 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
  52 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
  53 @@ -538,7 +538,7 @@ struct ath_ant_comb {
  54  #define DEFAULT_CACHELINE       32
  55  #define ATH_REGCLASSIDS_MAX     10
  56  #define ATH_CABQ_READY_TIME     80      /* % of beacon interval */
  57 -#define ATH_MAX_SW_RETRIES      10
  58 +#define ATH_MAX_SW_RETRIES      20
  59  #define ATH_CHAN_MAX            255
  60
  61  #define ATH_TXPOWER_MAX         100     /* .5 dBm units */