package/kernel/mac80211/patches/300-pending_work.patch

   1 commit 8c7ae357cc5b6bd037ad2d666e9f3789cf882925
   2 Author: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
   3 Date:   Wed Apr 23 15:07:57 2014 +0530
   4
   5     ath9k: fix race in setting ATH_OP_INVALID
   6
   7     The commit "ath9k: move sc_flags to ath_common" moved setting
   8     ATH_OP_INVALID flag below ieee80211_register_hw. This is causing
   9     the flag never being cleared randomly as the drv_start is called
  10     prior to setting flag. Fix this by setting the flag prior to
  11     register_hw.
  12
  13     Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
  14     Signed-off-by: John W. Linville <linville@tuxdriver.com>
  15
  16 commit c82552c5b0cb1735dbcbad78b1ffc6d3c212dc56
  17 Author: Tim Harvey <tharvey@gateworks.com>
  18 Date:   Mon Apr 21 16:14:57 2014 -0700
  19
  20     ath9k: add a recv budget
  21
  22     Implement a recv budget so that in cases of high traffic we still allow other
  23     taskets to get processed.
  24
  25     Without this, we can encounter a host of issues during high wireless traffic
  26     reception depending on system load including rcu stall's detected (ARM),
  27     soft lockups, failure to service critical tasks such as watchdog resets,
  28     and triggering of the tx stuck tasklet.
  29
  30     The same thing was proposed previously by Ben:
  31      http://www.spinics.net/lists/linux-wireless/msg112891.html
  32
  33     The only difference here is that I make sure only processed packets are counted
  34     in the budget by checking at the end of the rx loop.
  35
  36     Signed-off-by: Tim Harvey <tharvey@gateworks.com>
  37     Acked-by: Felix Fietkau <nbd@openwrt.org>
  38     Signed-off-by: John W. Linville <linville@tuxdriver.com>
  39
  40 commit 3a758134e66ca74a9df792616b5288b2fa2cfd7f
  41 Author: Tim Harvey <tharvey@gateworks.com>
  42 Date:   Mon Apr 21 16:14:56 2014 -0700
  43
  44     ath9k: fix possible hang on flush
  45
  46     If a flush is requested, make sure to clear the descriptor once we've
  47     processed it.
  48
  49     This resolves a hang that will occur if all RX descriptors are full when a
  50     flush is requested.
  51
  52     Signed-off-by: Tim Harvey <tharvey@gateworks.com>
  53     Acked-by: Felix Fietkau <nbd@openwrt.org>
  54     Signed-off-by: John W. Linville <linville@tuxdriver.com>
  55
  56 commit eefb1d6adc4c60d219182b8917e4567484ce07fc
  57 Author: Felix Fietkau <nbd@openwrt.org>
  58 Date:   Mon Apr 28 18:27:41 2014 +0200
  59
  60     ath9k: remove tid->paused flag
  61
  62     There are some corner cases where the driver could get stuck with a full
  63     tid queue that is paused, leading to a software tx queue hang.
  64
  65     Since the tx queueing rework, pausing per-tid queues on aggregation
  66     session setup is no longer necessary. The driver will assign sequence
  67     numbers to buffered frames when a new session is established, in order
  68     to get the correct starting sequence number.
  69
  70     mac80211 prevents new frames from entering the queue during setup.
  71
  72     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  73
  74 commit 98a713933d8495f4078f561c1e651b738dd5b531
  75 Author: Felix Fietkau <nbd@openwrt.org>
  76 Date:   Sun Apr 27 14:49:03 2014 +0200
  77
  78     ath9k_hw: do not lower ANI setting below default on AR913x
  79
  80     When the amount of noise fluctuates strongly, low immunity settings
  81     can sometimes disrupt signal detection on AR913x chips. When that
  82     happens, no OFDM/CCK errors are reported anymore, and ANI tunes the
  83     radio to the lowest immunity settings.
  84     Usually rx/tx fails as well in that case.
  85
  86     To fix this, keep noise immunity settings at or above ANI default level,
  87     which will keep radio parameters at or above INI values.
  88
  89     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  90
  91 commit 7cbb4c021bfd1e656f5b9953a947ab3c64e4e3b0
  92 Author: Felix Fietkau <nbd@openwrt.org>
  93 Date:   Thu Apr 10 10:49:01 2014 +0200
  94
  95     mac80211: exclude AP_VLAN interfaces from tx power calculation
  96
  97     Their power value is initialized to zero. This patch fixes an issue
  98     where the configured power drops to the minimum value when AP_VLAN
  99     interfaces are created/removed.
 100
 101     Cc: stable@vger.kernel.org
 102     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 103
 104 commit 0ca13e26341733bf9577287fb04a3bef0d2f5cc9
 105 Author: Felix Fietkau <nbd@openwrt.org>
 106 Date:   Wed Apr 9 00:07:01 2014 +0200
 107
 108     mac80211: suppress BSS info change notifications for AP_VLAN
 109
 110     Fixes warnings on tx power changes
 111
 112     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 113
 114 commit ec998e5991781ecdaad0911dc64f1c8d3749c308
 115 Author: Felix Fietkau <nbd@openwrt.org>
 116 Date:   Tue Apr 8 23:42:17 2014 +0200
 117
 118     ath9k: fix a scheduling while atomic bug in CSA handling
 119
 120     Commit "ath9k: prepare for multi-interface CSA support" added a call to
 121     ieee80211_iterate_active_interfaces in atomic context (beacon tasklet),
 122     which is crashing.
 123     Use ieee80211_iterate_active_interfaces_atomic instead.
 124
 125     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 126
 127 commit 93f310a38a1d81a4bc8fcd9bf29628bd721cf2ef
 128 Author: Felix Fietkau <nbd@openwrt.org>
 129 Date:   Sun Apr 6 23:35:28 2014 +0200
 130
 131     ath9k_hw: reduce ANI firstep range for older chips
 132
 133     Use 0-8 instead of 0-16, which is closer to the old implementation.
 134     Also drop the overwrite of the firstep_low parameter to improve
 135     stability.
 136
 137     Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 138
 139
 140 --- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
 141 +++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
 142 @@ -1004,11 +1004,9 @@ static bool ar5008_hw_ani_control_new(st
 143         case ATH9K_ANI_FIRSTEP_LEVEL:{
 144                 u32 level = param;
 145
 146 -               value = level * 2;
 147 +               value = level;
 148                 REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
 149                               AR_PHY_FIND_SIG_FIRSTEP, value);
 150 -               REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
 151 -                             AR_PHY_FIND_SIG_FIRSTEP_LOW, value);
 152
 153                 if (level != aniState->firstepLevel) {
 154                         ath_dbg(common, ANI,
 155 --- a/drivers/net/wireless/ath/ath9k/beacon.c
 156 +++ b/drivers/net/wireless/ath/ath9k/beacon.c
 157 @@ -312,10 +312,9 @@ static void ath9k_csa_update_vif(void *d
 158
 159  void ath9k_csa_update(struct ath_softc *sc)
 160  {
 161 -       ieee80211_iterate_active_interfaces(sc->hw,
 162 -                                           IEEE80211_IFACE_ITER_NORMAL,
 163 -                                           ath9k_csa_update_vif,
 164 -                                           sc);
 165 +       ieee80211_iterate_active_interfaces_atomic(sc->hw,
 166 +                                                  IEEE80211_IFACE_ITER_NORMAL,
 167 +                                                  ath9k_csa_update_vif, sc);
 168  }
 169
 170  void ath9k_beacon_tasklet(unsigned long data)
 171 --- a/net/mac80211/main.c
 172 +++ b/net/mac80211/main.c
 173 @@ -152,6 +152,8 @@ static u32 ieee80211_hw_conf_chan(struct
 174         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 175                 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
 176                         continue;
 177 +               if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 178 +                       continue;
 179                 power = min(power, sdata->vif.bss_conf.txpower);
 180         }
 181         rcu_read_unlock();
 182 @@ -203,7 +205,7 @@ void ieee80211_bss_info_change_notify(st
 183  {
 184         struct ieee80211_local *local = sdata->local;
 185
 186 -       if (!changed)
 187 +       if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 188                 return;
 189
 190         drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
 191 --- a/drivers/net/wireless/ath/ath9k/ani.c
 192 +++ b/drivers/net/wireless/ath/ath9k/ani.c
 193 @@ -155,6 +155,9 @@ static void ath9k_hw_set_ofdm_nil(struct
 194                 ATH9K_ANI_RSSI_THR_LOW,
 195                 ATH9K_ANI_RSSI_THR_HIGH);
 196
 197 +       if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_OFDM_DEF_LEVEL)
 198 +               immunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL;
 199 +
 200         if (!scan)
 201                 aniState->ofdmNoiseImmunityLevel = immunityLevel;
 202
 203 @@ -235,6 +238,9 @@ static void ath9k_hw_set_cck_nil(struct
 204                 BEACON_RSSI(ah), ATH9K_ANI_RSSI_THR_LOW,
 205                 ATH9K_ANI_RSSI_THR_HIGH);
 206
 207 +       if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_CCK_DEF_LEVEL)
 208 +               immunityLevel = ATH9K_ANI_CCK_DEF_LEVEL;
 209 +
 210         if (ah->opmode == NL80211_IFTYPE_STATION &&
 211             BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_LOW &&
 212             immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI)
 213 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
 214 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
 215 @@ -251,7 +251,6 @@ struct ath_atx_tid {
 216
 217         s8 bar_index;
 218         bool sched;
 219 -       bool paused;
 220         bool active;
 221  };
 222
 223 --- a/drivers/net/wireless/ath/ath9k/xmit.c
 224 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
 225 @@ -107,9 +107,6 @@ static void ath_tx_queue_tid(struct ath_
 226  {
 227         struct ath_atx_ac *ac = tid->ac;
 228
 229 -       if (tid->paused)
 230 -               return;
 231 -
 232         if (tid->sched)
 233                 return;
 234
 235 @@ -1407,7 +1404,6 @@ int ath_tx_aggr_start(struct ath_softc *
 236         ath_tx_tid_change_state(sc, txtid);
 237
 238         txtid->active = true;
 239 -       txtid->paused = true;
 240         *ssn = txtid->seq_start = txtid->seq_next;
 241         txtid->bar_index = -1;
 242
 243 @@ -1427,7 +1423,6 @@ void ath_tx_aggr_stop(struct ath_softc *
 244
 245         ath_txq_lock(sc, txq);
 246         txtid->active = false;
 247 -       txtid->paused = false;
 248         ath_tx_flush_tid(sc, txtid);
 249         ath_tx_tid_change_state(sc, txtid);
 250         ath_txq_unlock_complete(sc, txq);
 251 @@ -1487,7 +1482,7 @@ void ath_tx_aggr_wakeup(struct ath_softc
 252                 ath_txq_lock(sc, txq);
 253                 ac->clear_ps_filter = true;
 254
 255 -               if (!tid->paused && ath_tid_has_buffered(tid)) {
 256 +               if (ath_tid_has_buffered(tid)) {
 257                         ath_tx_queue_tid(txq, tid);
 258                         ath_txq_schedule(sc, txq);
 259                 }
 260 @@ -1510,7 +1505,6 @@ void ath_tx_aggr_resume(struct ath_softc
 261         ath_txq_lock(sc, txq);
 262
 263         tid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor;
 264 -       tid->paused = false;
 265
 266         if (ath_tid_has_buffered(tid)) {
 267                 ath_tx_queue_tid(txq, tid);
 268 @@ -1544,8 +1538,6 @@ void ath9k_release_buffered_frames(struc
 269                         continue;
 270
 271                 tid = ATH_AN_2_TID(an, i);
 272 -               if (tid->paused)
 273 -                       continue;
 274
 275                 ath_txq_lock(sc, tid->ac->txq);
 276                 while (nframes > 0) {
 277 @@ -1844,9 +1836,6 @@ void ath_txq_schedule(struct ath_softc *
 278                         list_del(&tid->list);
 279                         tid->sched = false;
 280
 281 -                       if (tid->paused)
 282 -                               continue;
 283 -
 284                         if (ath_tx_sched_aggr(sc, txq, tid, &stop))
 285                                 sent = true;
 286
 287 @@ -2698,7 +2687,6 @@ void ath_tx_node_init(struct ath_softc *
 288                 tid->baw_size  = WME_MAX_BA;
 289                 tid->baw_head  = tid->baw_tail = 0;
 290                 tid->sched     = false;
 291 -               tid->paused    = false;
 292                 tid->active        = false;
 293                 __skb_queue_head_init(&tid->buf_q);
 294                 __skb_queue_head_init(&tid->retry_q);
 295 --- a/drivers/net/wireless/ath/ath9k/recv.c
 296 +++ b/drivers/net/wireless/ath/ath9k/recv.c
 297 @@ -975,6 +975,7 @@ int ath_rx_tasklet(struct ath_softc *sc,
 298         u64 tsf = 0;
 299         unsigned long flags;
 300         dma_addr_t new_buf_addr;
 301 +       unsigned int budget = 512;
 302
 303         if (edma)
 304                 dma_type = DMA_BIDIRECTIONAL;
 305 @@ -1113,15 +1114,17 @@ requeue_drop_frag:
 306                 }
 307  requeue:
 308                 list_add_tail(&bf->list, &sc->rx.rxbuf);
 309 -               if (flush)
 310 -                       continue;
 311
 312                 if (edma) {
 313                         ath_rx_edma_buf_link(sc, qtype);
 314                 } else {
 315                         ath_rx_buf_relink(sc, bf);
 316 -                       ath9k_hw_rxena(ah);
 317 +                       if (!flush)
 318 +                               ath9k_hw_rxena(ah);
 319                 }
 320 +
 321 +               if (!budget--)
 322 +                       break;
 323         } while (1);
 324
 325         if (!(ah->imask & ATH9K_INT_RXEOL)) {
 326 --- a/drivers/net/wireless/ath/ath9k/ahb.c
 327 +++ b/drivers/net/wireless/ath/ath9k/ahb.c
 328 @@ -86,7 +86,6 @@ static int ath_ahb_probe(struct platform
 329         int irq;
 330         int ret = 0;
 331         struct ath_hw *ah;
 332 -       struct ath_common *common;
 333         char hw_name[64];
 334
 335         if (!dev_get_platdata(&pdev->dev)) {
 336 @@ -146,9 +145,6 @@ static int ath_ahb_probe(struct platform
 337         wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
 338                    hw_name, (unsigned long)mem, irq);
 339
 340 -       common = ath9k_hw_common(sc->sc_ah);
 341 -       /* Will be cleared in ath9k_start() */
 342 -       set_bit(ATH_OP_INVALID, &common->op_flags);
 343         return 0;
 344
 345   err_irq:
 346 --- a/drivers/net/wireless/ath/ath9k/init.c
 347 +++ b/drivers/net/wireless/ath/ath9k/init.c
 348 @@ -781,6 +781,9 @@ int ath9k_init_device(u16 devid, struct
 349         common = ath9k_hw_common(ah);
 350         ath9k_set_hw_capab(sc, hw);
 351
 352 +       /* Will be cleared in ath9k_start() */
 353 +       set_bit(ATH_OP_INVALID, &common->op_flags);
 354 +
 355         /* Initialize regulatory */
 356         error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
 357                               ath9k_reg_notifier);
 358 --- a/drivers/net/wireless/ath/ath9k/pci.c
 359 +++ b/drivers/net/wireless/ath/ath9k/pci.c
 360 @@ -784,7 +784,6 @@ static int ath_pci_probe(struct pci_dev
 361  {
 362         struct ath_softc *sc;
 363         struct ieee80211_hw *hw;
 364 -       struct ath_common *common;
 365         u8 csz;
 366         u32 val;
 367         int ret = 0;
 368 @@ -877,10 +876,6 @@ static int ath_pci_probe(struct pci_dev
 369         wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
 370                    hw_name, (unsigned long)sc->mem, pdev->irq);
 371
 372 -       /* Will be cleared in ath9k_start() */
 373 -       common = ath9k_hw_common(sc->sc_ah);
 374 -       set_bit(ATH_OP_INVALID, &common->op_flags);
 375 -
 376         return 0;
 377
 378  err_init: