package/mac80211/patches/311-pending_work.patch

   1 --- a/drivers/net/wireless/ath/ath9k/mac.c
   2 +++ b/drivers/net/wireless/ath/ath9k/mac.c
   3 @@ -766,14 +766,6 @@ void ath9k_hw_startpcureceive(struct ath
   4  }
   5  EXPORT_SYMBOL(ath9k_hw_startpcureceive);
   6
   7 -void ath9k_hw_stoppcurecv(struct ath_hw *ah)
   8 -{
   9 -       REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
  10 -
  11 -       ath9k_hw_disable_mib_counters(ah);
  12 -}
  13 -EXPORT_SYMBOL(ath9k_hw_stoppcurecv);
  14 -
  15  void ath9k_hw_abortpcurecv(struct ath_hw *ah)
  16  {
  17         REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
  18 --- a/drivers/net/wireless/ath/ath9k/mac.h
  19 +++ b/drivers/net/wireless/ath/ath9k/mac.h
  20 @@ -691,7 +691,6 @@ void ath9k_hw_setuprxdesc(struct ath_hw
  21  bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set);
  22  void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp);
  23  void ath9k_hw_startpcureceive(struct ath_hw *ah, bool is_scanning);
  24 -void ath9k_hw_stoppcurecv(struct ath_hw *ah);
  25  void ath9k_hw_abortpcurecv(struct ath_hw *ah);
  26  bool ath9k_hw_stopdmarecv(struct ath_hw *ah);
  27  int ath9k_hw_beaconq_setup(struct ath_hw *ah);
  28 --- a/drivers/net/wireless/ath/ath9k/recv.c
  29 +++ b/drivers/net/wireless/ath/ath9k/recv.c
  30 @@ -518,7 +518,7 @@ bool ath_stoprecv(struct ath_softc *sc)
  31         bool stopped;
  32
  33         spin_lock_bh(&sc->rx.rxbuflock);
  34 -       ath9k_hw_stoppcurecv(ah);
  35 +       ath9k_hw_abortpcurecv(ah);
  36         ath9k_hw_setrxfilter(ah, 0);
  37         stopped = ath9k_hw_stopdmarecv(ah);
  38
  39 --- a/drivers/net/wireless/ath/ath9k/xmit.c
  40 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
  41 @@ -163,6 +163,7 @@ static void ath_tx_flush_tid(struct ath_
  42                 bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
  43                 list_move_tail(&bf->list, &bf_head);
  44
  45 +               spin_unlock_bh(&txq->axq_lock);
  46                 fi = get_frame_info(bf->bf_mpdu);
  47                 if (fi->retries) {
  48                         ath_tx_update_baw(sc, tid, fi->seqno);
  49 @@ -170,6 +171,7 @@ static void ath_tx_flush_tid(struct ath_
  50                 } else {
  51                         ath_tx_send_normal(sc, txq, tid, &bf_head);
  52                 }
  53 +               spin_lock_bh(&txq->axq_lock);
  54         }
  55
  56         spin_unlock_bh(&txq->axq_lock);
  57 --- a/net/mac80211/ieee80211_i.h
  58 +++ b/net/mac80211/ieee80211_i.h
  59 @@ -349,6 +349,7 @@ struct ieee80211_if_managed {
  60         struct work_struct chswitch_work;
  61         struct work_struct beacon_connection_loss_work;
  62
  63 +       unsigned long beacon_timeout;
  64         unsigned long probe_timeout;
  65         int probe_send_count;
  66
  67 @@ -1269,6 +1270,8 @@ void ieee80211_send_nullfunc(struct ieee
  68                              int powersave);
  69  void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
  70                              struct ieee80211_hdr *hdr);
  71 +void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
  72 +                            struct ieee80211_hdr *hdr);
  73  void ieee80211_beacon_connection_loss_work(struct work_struct *work);
  74
  75  void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
  76 --- a/net/mac80211/mlme.c
  77 +++ b/net/mac80211/mlme.c
  78 @@ -28,13 +28,19 @@
  79  #include "rate.h"
  80  #include "led.h"
  81
  82 +#define IEEE80211_MAX_NULLFUNC_TRIES 2
  83  #define IEEE80211_MAX_PROBE_TRIES 5
  84
  85  /*
  86 - * beacon loss detection timeout
  87 - * XXX: should depend on beacon interval
  88 + * Beacon loss timeout is calculated as N frames times the
  89 + * advertised beacon interval.  This may need to be somewhat
  90 + * higher than what hardware might detect to account for
  91 + * delays in the host processing frames. But since we also
  92 + * probe on beacon miss before declaring the connection lost
  93 + * default to what we want.
  94   */
  95 -#define IEEE80211_BEACON_LOSS_TIME     (2 * HZ)
  96 +#define IEEE80211_BEACON_LOSS_COUNT    7
  97 +
  98  /*
  99   * Time the connection can be idle before we probe
 100   * it to see if we can still talk to the AP.
 101 @@ -121,7 +127,7 @@ void ieee80211_sta_reset_beacon_monitor(
 102                 return;
 103
 104         mod_timer(&sdata->u.mgd.bcn_mon_timer,
 105 -                 round_jiffies_up(jiffies + IEEE80211_BEACON_LOSS_TIME));
 106 +                 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
 107  }
 108
 109  void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
 110 @@ -871,6 +877,9 @@ static void ieee80211_set_associated(str
 111         bss_info_changed |= ieee80211_handle_bss_capability(sdata,
 112                 cbss->capability, bss->has_erp_value, bss->erp_value);
 113
 114 +       sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
 115 +               IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
 116 +
 117         sdata->u.mgd.associated = cbss;
 118         memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
 119
 120 @@ -1026,6 +1035,51 @@ void ieee80211_sta_rx_notify(struct ieee
 121         ieee80211_sta_reset_conn_monitor(sdata);
 122  }
 123
 124 +static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
 125 +{
 126 +       struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 127 +
 128 +       if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
 129 +                             IEEE80211_STA_CONNECTION_POLL)))
 130 +           return;
 131 +
 132 +       ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
 133 +                         IEEE80211_STA_BEACON_POLL);
 134 +       mutex_lock(&sdata->local->iflist_mtx);
 135 +       ieee80211_recalc_ps(sdata->local, -1);
 136 +       mutex_unlock(&sdata->local->iflist_mtx);
 137 +
 138 +       if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
 139 +               return;
 140 +
 141 +       /*
 142 +        * We've received a probe response, but are not sure whether
 143 +        * we have or will be receiving any beacons or data, so let's
 144 +        * schedule the timers again, just in case.
 145 +        */
 146 +       ieee80211_sta_reset_beacon_monitor(sdata);
 147 +
 148 +       mod_timer(&ifmgd->conn_mon_timer,
 149 +                 round_jiffies_up(jiffies +
 150 +                                  IEEE80211_CONNECTION_IDLE_TIME));
 151 +}
 152 +
 153 +void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
 154 +                            struct ieee80211_hdr *hdr)
 155 +{
 156 +       if (!ieee80211_is_data(hdr->frame_control) &&
 157 +           !ieee80211_is_nullfunc(hdr->frame_control))
 158 +           return;
 159 +
 160 +       ieee80211_sta_reset_conn_monitor(sdata);
 161 +
 162 +       if (ieee80211_is_nullfunc(hdr->frame_control) &&
 163 +           sdata->u.mgd.probe_send_count > 0) {
 164 +               sdata->u.mgd.probe_send_count = 0;
 165 +               ieee80211_queue_work(&sdata->local->hw, &sdata->work);
 166 +       }
 167 +}
 168 +
 169  static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
 170  {
 171         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 172 @@ -1041,8 +1095,19 @@ static void ieee80211_mgd_probe_ap_send(
 173         if (ifmgd->probe_send_count >= unicast_limit)
 174                 dst = NULL;
 175
 176 -       ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
 177 -       ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
 178 +       /*
 179 +        * When the hardware reports an accurate Tx ACK status, it's
 180 +        * better to send a nullfunc frame instead of a probe request,
 181 +        * as it will kick us off the AP quickly if we aren't associated
 182 +        * anymore. The timeout will be reset if the frame is ACKed by
 183 +        * the AP.
 184 +        */
 185 +       if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
 186 +               ieee80211_send_nullfunc(sdata->local, sdata, 0);
 187 +       else {
 188 +               ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
 189 +               ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
 190 +       }
 191
 192         ifmgd->probe_send_count++;
 193         ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
 194 @@ -1509,29 +1574,8 @@ static void ieee80211_rx_mgmt_probe_resp
 195         ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
 196
 197         if (ifmgd->associated &&
 198 -           memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0 &&
 199 -           ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
 200 -                           IEEE80211_STA_CONNECTION_POLL)) {
 201 -               ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
 202 -                                 IEEE80211_STA_BEACON_POLL);
 203 -               mutex_lock(&sdata->local->iflist_mtx);
 204 -               ieee80211_recalc_ps(sdata->local, -1);
 205 -               mutex_unlock(&sdata->local->iflist_mtx);
 206 -
 207 -               if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
 208 -                       return;
 209 -
 210 -               /*
 211 -                * We've received a probe response, but are not sure whether
 212 -                * we have or will be receiving any beacons or data, so let's
 213 -                * schedule the timers again, just in case.
 214 -                */
 215 -               ieee80211_sta_reset_beacon_monitor(sdata);
 216 -
 217 -               mod_timer(&ifmgd->conn_mon_timer,
 218 -                         round_jiffies_up(jiffies +
 219 -                                          IEEE80211_CONNECTION_IDLE_TIME));
 220 -       }
 221 +           memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0)
 222 +               ieee80211_reset_ap_probe(sdata);
 223  }
 224
 225  /*
 226 @@ -1881,12 +1925,23 @@ void ieee80211_sta_work(struct ieee80211
 227                             IEEE80211_STA_CONNECTION_POLL) &&
 228             ifmgd->associated) {
 229                 u8 bssid[ETH_ALEN];
 230 +               int max_tries;
 231 +
 232 +               if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
 233 +                       max_tries = IEEE80211_MAX_NULLFUNC_TRIES;
 234 +               else
 235 +                       max_tries = IEEE80211_MAX_PROBE_TRIES;
 236
 237                 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
 238 -               if (time_is_after_jiffies(ifmgd->probe_timeout))
 239 +
 240 +               /* ACK received for nullfunc probing frame */
 241 +               if (!ifmgd->probe_send_count)
 242 +                       ieee80211_reset_ap_probe(sdata);
 243 +
 244 +               else if (time_is_after_jiffies(ifmgd->probe_timeout))
 245                         run_again(ifmgd, ifmgd->probe_timeout);
 246
 247 -               else if (ifmgd->probe_send_count < IEEE80211_MAX_PROBE_TRIES) {
 248 +               else if (ifmgd->probe_send_count < max_tries) {
 249  #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 250                         wiphy_debug(local->hw.wiphy,
 251                                     "%s: No probe response from AP %pM"
 252 @@ -2012,6 +2067,8 @@ void ieee80211_sta_restart(struct ieee80
 253                 add_timer(&ifmgd->timer);
 254         if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))
 255                 add_timer(&ifmgd->chswitch_timer);
 256 +       ieee80211_sta_reset_beacon_monitor(sdata);
 257 +       ieee80211_send_nullfunc(sdata->local, sdata, 0);
 258  }
 259  #endif
 260
 261 --- a/net/mac80211/status.c
 262 +++ b/net/mac80211/status.c
 263 @@ -155,6 +155,10 @@ static void ieee80211_frame_acked(struct
 264
 265                 ieee80211_queue_work(&local->hw, &local->recalc_smps);
 266         }
 267 +
 268 +       if ((sdata->vif.type == NL80211_IFTYPE_STATION) &&
 269 +           (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
 270 +               ieee80211_sta_tx_notify(sdata, (void *) skb->data);
 271  }
 272
 273  void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)