package/mac80211/patches/531-ath9k_fix_ap_ps_buffering.patch

   1 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
   2 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
   3 @@ -205,6 +205,7 @@ struct ath_atx_ac {
   4         int sched;
   5         struct list_head list;
   6         struct list_head tid_q;
   7 +       bool clear_ps_filter;
   8  };
   9
  10  struct ath_frame_info {
  11 @@ -262,6 +263,8 @@ struct ath_node {
  12         struct ath_atx_ac ac[WME_NUM_AC];
  13         u16 maxampdu;
  14         u8 mpdudensity;
  15 +
  16 +       bool sleeping;
  17  };
  18
  19  #define AGGR_CLEANUP         BIT(1)
  20 @@ -343,6 +346,9 @@ int ath_tx_aggr_start(struct ath_softc *
  21  void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
  22  void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
  23
  24 +void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
  25 +bool ath_tx_aggr_sleep(struct ath_softc *sc, struct ath_node *an);
  26 +
  27  /********/
  28  /* VIFs */
  29  /********/
  30 --- a/drivers/net/wireless/ath/ath9k/main.c
  31 +++ b/drivers/net/wireless/ath/ath9k/main.c
  32 @@ -1791,6 +1791,27 @@ static int ath9k_sta_remove(struct ieee8
  33         return 0;
  34  }
  35
  36 +static void ath9k_sta_notify(struct ieee80211_hw *hw,
  37 +                        struct ieee80211_vif *vif,
  38 +                        enum sta_notify_cmd cmd,
  39 +                        struct ieee80211_sta *sta)
  40 +{
  41 +       struct ath_softc *sc = hw->priv;
  42 +       struct ath_node *an = (struct ath_node *) sta->drv_priv;
  43 +
  44 +       switch (cmd) {
  45 +       case STA_NOTIFY_SLEEP:
  46 +               an->sleeping = true;
  47 +               if (ath_tx_aggr_sleep(sc, an))
  48 +                       ieee80211_sta_set_tim(sta);
  49 +               break;
  50 +       case STA_NOTIFY_AWAKE:
  51 +               an->sleeping = false;
  52 +               ath_tx_aggr_wakeup(sc, an);
  53 +               break;
  54 +       }
  55 +}
  56 +
  57  static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
  58                          const struct ieee80211_tx_queue_params *params)
  59  {
  60 @@ -2130,6 +2151,7 @@ struct ieee80211_ops ath9k_ops = {
  61         .configure_filter   = ath9k_configure_filter,
  62         .sta_add            = ath9k_sta_add,
  63         .sta_remove         = ath9k_sta_remove,
  64 +       .sta_notify         = ath9k_sta_notify,
  65         .conf_tx            = ath9k_conf_tx,
  66         .bss_info_changed   = ath9k_bss_info_changed,
  67         .set_key            = ath9k_set_key,
  68 --- a/drivers/net/wireless/ath/ath9k/xmit.c
  69 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
  70 @@ -357,6 +357,7 @@ static void ath_tx_complete_aggr(struct
  71         struct ath_frame_info *fi;
  72         int nframes;
  73         u8 tidno;
  74 +       bool clear_filter;
  75
  76         skb = bf->bf_mpdu;
  77         hdr = (struct ieee80211_hdr *)skb->data;
  78 @@ -442,7 +443,11 @@ static void ath_tx_complete_aggr(struct
  79                         acked_cnt++;
  80                 } else {
  81                         if (!(tid->state & AGGR_CLEANUP) && retry) {
  82 -                               if (fi->retries < ATH_MAX_SW_RETRIES) {
  83 +                               if (ts->ts_status & ATH9K_TXERR_FILT) {
  84 +                                       if (!an->sleeping)
  85 +                                               clear_filter = true;
  86 +                                       txpending = 1;
  87 +                               } else if (fi->retries < ATH_MAX_SW_RETRIES) {
  88                                         ath_tx_set_retry(sc, txq, bf->bf_mpdu);
  89                                         txpending = 1;
  90                                 } else {
  91 @@ -496,6 +501,7 @@ static void ath_tx_complete_aggr(struct
  92                                 !txfail, sendbar);
  93                 } else {
  94                         /* retry the un-acked ones */
  95 +                       ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, false);
  96                         if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) {
  97                                 if (bf->bf_next == NULL && bf_last->bf_stale) {
  98                                         struct ath_buf *tbf;
  99 @@ -547,6 +553,8 @@ static void ath_tx_complete_aggr(struct
 100         /* prepend un-acked frames to the beginning of the pending frame queue */
 101         if (!list_empty(&bf_pending)) {
 102                 spin_lock_bh(&txq->axq_lock);
 103 +               if (clear_filter)
 104 +                       tid->ac->clear_ps_filter = true;
 105                 list_splice(&bf_pending, &tid->buf_q);
 106                 ath_tx_queue_tid(txq, tid);
 107                 spin_unlock_bh(&txq->axq_lock);
 108 @@ -816,6 +824,11 @@ static void ath_tx_sched_aggr(struct ath
 109                 bf = list_first_entry(&bf_q, struct ath_buf, list);
 110                 bf->bf_lastbf = list_entry(bf_q.prev, struct ath_buf, list);
 111
 112 +               if (tid->ac->clear_ps_filter) {
 113 +                       tid->ac->clear_ps_filter = false;
 114 +                       ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, true);
 115 +               }
 116 +
 117                 /* if only one frame, send as non-aggregate */
 118                 if (bf == bf->bf_lastbf) {
 119                         fi = get_frame_info(bf->bf_mpdu);
 120 @@ -896,6 +909,67 @@ void ath_tx_aggr_stop(struct ath_softc *
 121         ath_tx_flush_tid(sc, txtid);
 122  }
 123
 124 +bool ath_tx_aggr_sleep(struct ath_softc *sc, struct ath_node *an)
 125 +{
 126 +       struct ath_atx_tid *tid;
 127 +       struct ath_atx_ac *ac;
 128 +       struct ath_txq *txq;
 129 +       bool buffered = false;
 130 +       int tidno;
 131 +
 132 +       for (tidno = 0, tid = &an->tid[tidno];
 133 +            tidno < WME_NUM_TID; tidno++, tid++) {
 134 +
 135 +               if (!tid->sched)
 136 +                       continue;
 137 +
 138 +               ac = tid->ac;
 139 +               txq = ac->txq;
 140 +
 141 +               spin_lock_bh(&txq->axq_lock);
 142 +
 143 +               if (!list_empty(&tid->buf_q))
 144 +                       buffered = true;
 145 +
 146 +               tid->sched = false;
 147 +               list_del(&tid->list);
 148 +
 149 +               if (ac->sched) {
 150 +                       ac->sched = false;
 151 +                       list_del(&ac->list);
 152 +               }
 153 +
 154 +               spin_unlock_bh(&txq->axq_lock);
 155 +       }
 156 +
 157 +       return buffered;
 158 +}
 159 +
 160 +void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an)
 161 +{
 162 +       struct ath_atx_tid *tid;
 163 +       struct ath_atx_ac *ac;
 164 +       struct ath_txq *txq;
 165 +       int tidno;
 166 +
 167 +       for (tidno = 0, tid = &an->tid[tidno];
 168 +            tidno < WME_NUM_TID; tidno++, tid++) {
 169 +
 170 +               ac = tid->ac;
 171 +               txq = ac->txq;
 172 +
 173 +               spin_lock_bh(&txq->axq_lock);
 174 +               ac->clear_ps_filter = true;
 175 +
 176 +               if (!list_empty(&tid->buf_q) && !tid->paused) {
 177 +                       ath_tx_queue_tid(txq, tid);
 178 +                       ath_txq_schedule(sc, txq);
 179 +               }
 180 +
 181 +               spin_unlock_bh(&txq->axq_lock);
 182 +       }
 183 +}
 184 +
 185  void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
 186  {
 187         struct ath_atx_tid *txtid;
 188 @@ -1492,7 +1566,6 @@ static int setup_tx_flags(struct sk_buff
 189         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 190         int flags = 0;
 191
 192 -       flags |= ATH9K_TXDESC_CLRDMASK; /* needed for crypto errors */
 193         flags |= ATH9K_TXDESC_INTREQ;
 194
 195         if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
 196 @@ -1755,6 +1828,9 @@ static void ath_tx_start_dma(struct ath_
 197                 if (txctl->paprd)
 198                         bf->bf_state.bfs_paprd_timestamp = jiffies;
 199
 200 +               if (tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
 201 +                       ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, true);
 202 +
 203                 ath_tx_send_normal(sc, txctl->txq, tid, &bf_head);
 204         }
 205
 206 --- a/drivers/net/wireless/ath/ath9k/hw-ops.h
 207 +++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
 208 @@ -128,6 +128,11 @@ static inline void ath9k_hw_set11n_virtu
 209         ath9k_hw_ops(ah)->set11n_virtualmorefrag(ah, ds, vmf);
 210  }
 211
 212 +static inline void ath9k_hw_set_clrdmask(struct ath_hw *ah, void *ds, bool val)
 213 +{
 214 +       ath9k_hw_ops(ah)->set_clrdmask(ah, ds, val);
 215 +}
 216 +
 217  /* Private hardware call ops */
 218
 219  /* PHY ops */
 220 --- a/drivers/net/wireless/ath/ath9k/hw.h
 221 +++ b/drivers/net/wireless/ath/ath9k/hw.h
 222 @@ -642,6 +642,7 @@ struct ath_hw_ops {
 223                                      u32 burstDuration);
 224         void (*set11n_virtualmorefrag)(struct ath_hw *ah, void *ds,
 225                                        u32 vmf);
 226 +       void (*set_clrdmask)(struct ath_hw *ah, void *ds, bool val);
 227  };
 228
 229  struct ath_nf_limits {
 230 --- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
 231 +++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
 232 @@ -290,7 +290,6 @@ static void ar9002_hw_set11n_txdesc(stru
 233                 | (flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
 234                 | SM(txPower, AR_XmitPower)
 235                 | (flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
 236 -               | (flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
 237                 | (flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
 238                 | (keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0);
 239
 240 @@ -311,6 +310,16 @@ static void ar9002_hw_set11n_txdesc(stru
 241         }
 242  }
 243
 244 +static void ar9002_hw_set_clrdmask(struct ath_hw *ah, void *ds, bool val)
 245 +{
 246 +       struct ar5416_desc *ads = AR5416DESC(ds);
 247 +
 248 +       if (val)
 249 +               ads->ds_ctl0 |= AR_ClrDestMask;
 250 +       else
 251 +               ads->ds_ctl0 &= ~AR_ClrDestMask;
 252 +}
 253 +
 254  static void ar9002_hw_set11n_ratescenario(struct ath_hw *ah, void *ds,
 255                                           void *lastds,
 256                                           u32 durUpdateEn, u32 rtsctsRate,
 257 @@ -460,4 +469,5 @@ void ar9002_hw_attach_mac_ops(struct ath
 258         ops->clr11n_aggr = ar9002_hw_clr11n_aggr;
 259         ops->set11n_burstduration = ar9002_hw_set11n_burstduration;
 260         ops->set11n_virtualmorefrag = ar9002_hw_set11n_virtualmorefrag;
 261 +       ops->set_clrdmask = ar9002_hw_set_clrdmask;
 262  }
 263 --- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
 264 +++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
 265 @@ -329,7 +329,6 @@ static void ar9003_hw_set11n_txdesc(stru
 266                 | (flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
 267                 | SM(txpower, AR_XmitPower)
 268                 | (flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
 269 -               | (flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
 270                 | (keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0)
 271                 | (flags & ATH9K_TXDESC_LOWRXCHAIN ? AR_LowRxChain : 0);
 272
 273 @@ -350,6 +349,16 @@ static void ar9003_hw_set11n_txdesc(stru
 274         ads->ctl22 = 0;
 275  }
 276
 277 +static void ar9003_hw_set_clrdmask(struct ath_hw *ah, void *ds, bool val)
 278 +{
 279 +       struct ar9003_txc *ads = (struct ar9003_txc *) ds;
 280 +
 281 +       if (val)
 282 +               ads->ctl11 |= AR_ClrDestMask;
 283 +       else
 284 +               ads->ctl11 &= ~AR_ClrDestMask;
 285 +}
 286 +
 287  static void ar9003_hw_set11n_ratescenario(struct ath_hw *ah, void *ds,
 288                                           void *lastds,
 289                                           u32 durUpdateEn, u32 rtsctsRate,
 290 @@ -522,6 +531,7 @@ void ar9003_hw_attach_mac_ops(struct ath
 291         ops->clr11n_aggr = ar9003_hw_clr11n_aggr;
 292         ops->set11n_burstduration = ar9003_hw_set11n_burstduration;
 293         ops->set11n_virtualmorefrag = ar9003_hw_set11n_virtualmorefrag;
 294 +       ops->set_clrdmask = ar9003_hw_set_clrdmask;
 295  }
 296
 297  void ath9k_hw_set_rx_bufsize(struct ath_hw *ah, u16 buf_size)
 298 --- a/drivers/net/wireless/ath/ath9k/mac.h
 299 +++ b/drivers/net/wireless/ath/ath9k/mac.h
 300 @@ -239,7 +239,6 @@ struct ath_desc {
 301         void *ds_vdata;
 302  } __packed __aligned(4);
 303
 304 -#define ATH9K_TXDESC_CLRDMASK          0x0001
 305  #define ATH9K_TXDESC_NOACK             0x0002
 306  #define ATH9K_TXDESC_RTSENA            0x0004
 307  #define ATH9K_TXDESC_CTSENA            0x0008