drivers/net/wireless/mediatek/mt76/mac80211.c

   1 /*
   2  * Copyright (C) 2016 Felix Fietkau <[email protected]>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/of.h>
  17 #include "mt76.h"
  18
  19 #define CHAN2G(_idx, _freq) {                   \
  20         .band = NL80211_BAND_2GHZ,              \
  21         .center_freq = (_freq),                 \
  22         .hw_value = (_idx),                     \
  23         .max_power = 30,                        \
  24 }
  25
  26 #define CHAN5G(_idx, _freq) {                   \
  27         .band = NL80211_BAND_5GHZ,              \
  28         .center_freq = (_freq),                 \
  29         .hw_value = (_idx),                     \
  30         .max_power = 30,                        \
  31 }
  32
  33 static const struct ieee80211_channel mt76_channels_2ghz[] = {
  34         CHAN2G(1, 2412),
  35         CHAN2G(2, 2417),
  36         CHAN2G(3, 2422),
  37         CHAN2G(4, 2427),
  38         CHAN2G(5, 2432),
  39         CHAN2G(6, 2437),
  40         CHAN2G(7, 2442),
  41         CHAN2G(8, 2447),
  42         CHAN2G(9, 2452),
  43         CHAN2G(10, 2457),
  44         CHAN2G(11, 2462),
  45         CHAN2G(12, 2467),
  46         CHAN2G(13, 2472),
  47         CHAN2G(14, 2484),
  48 };
  49
  50 static const struct ieee80211_channel mt76_channels_5ghz[] = {
  51         CHAN5G(36, 5180),
  52         CHAN5G(40, 5200),
  53         CHAN5G(44, 5220),
  54         CHAN5G(48, 5240),
  55
  56         CHAN5G(52, 5260),
  57         CHAN5G(56, 5280),
  58         CHAN5G(60, 5300),
  59         CHAN5G(64, 5320),
  60
  61         CHAN5G(100, 5500),
  62         CHAN5G(104, 5520),
  63         CHAN5G(108, 5540),
  64         CHAN5G(112, 5560),
  65         CHAN5G(116, 5580),
  66         CHAN5G(120, 5600),
  67         CHAN5G(124, 5620),
  68         CHAN5G(128, 5640),
  69         CHAN5G(132, 5660),
  70         CHAN5G(136, 5680),
  71         CHAN5G(140, 5700),
  72
  73         CHAN5G(149, 5745),
  74         CHAN5G(153, 5765),
  75         CHAN5G(157, 5785),
  76         CHAN5G(161, 5805),
  77         CHAN5G(165, 5825),
  78 };
  79
  80 static const struct ieee80211_tpt_blink mt76_tpt_blink[] = {
  81         { .throughput =   0 * 1024, .blink_time = 334 },
  82         { .throughput =   1 * 1024, .blink_time = 260 },
  83         { .throughput =   5 * 1024, .blink_time = 220 },
  84         { .throughput =  10 * 1024, .blink_time = 190 },
  85         { .throughput =  20 * 1024, .blink_time = 170 },
  86         { .throughput =  50 * 1024, .blink_time = 150 },
  87         { .throughput =  70 * 1024, .blink_time = 130 },
  88         { .throughput = 100 * 1024, .blink_time = 110 },
  89         { .throughput = 200 * 1024, .blink_time =  80 },
  90         { .throughput = 300 * 1024, .blink_time =  50 },
  91 };
  92
  93 static int mt76_led_init(struct mt76_dev *dev)
  94 {
  95         struct device_node *np = dev->dev->of_node;
  96         struct ieee80211_hw *hw = dev->hw;
  97         int led_pin;
  98
  99         if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set)
 100                 return 0;
 101
 102         snprintf(dev->led_name, sizeof(dev->led_name),
 103                  "mt76-%s", wiphy_name(hw->wiphy));
 104
 105         dev->led_cdev.name = dev->led_name;
 106         dev->led_cdev.default_trigger =
 107                 ieee80211_create_tpt_led_trigger(hw,
 108                                         IEEE80211_TPT_LEDTRIG_FL_RADIO,
 109                                         mt76_tpt_blink,
 110                                         ARRAY_SIZE(mt76_tpt_blink));
 111
 112         np = of_get_child_by_name(np, "led");
 113         if (np) {
 114                 if (!of_property_read_u32(np, "led-sources", &led_pin))
 115                         dev->led_pin = led_pin;
 116                 dev->led_al = of_property_read_bool(np, "led-active-low");
 117         }
 118
 119         return devm_led_classdev_register(dev->dev, &dev->led_cdev);
 120 }
 121
 122 static void mt76_init_stream_cap(struct mt76_dev *dev,
 123                                  struct ieee80211_supported_band *sband,
 124                                  bool vht)
 125 {
 126         struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
 127         int i, nstream = __sw_hweight8(dev->antenna_mask);
 128         struct ieee80211_sta_vht_cap *vht_cap;
 129         u16 mcs_map = 0;
 130
 131         if (nstream > 1)
 132                 ht_cap->cap |= IEEE80211_HT_CAP_TX_STBC;
 133         else
 134                 ht_cap->cap &= ~IEEE80211_HT_CAP_TX_STBC;
 135
 136         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
 137                 ht_cap->mcs.rx_mask[i] = i < nstream ? 0xff : 0;
 138
 139         if (!vht)
 140                 return;
 141
 142         vht_cap = &sband->vht_cap;
 143         if (nstream > 1)
 144                 vht_cap->cap |= IEEE80211_VHT_CAP_TXSTBC;
 145         else
 146                 vht_cap->cap &= ~IEEE80211_VHT_CAP_TXSTBC;
 147
 148         for (i = 0; i < 8; i++) {
 149                 if (i < nstream)
 150                         mcs_map |= (IEEE80211_VHT_MCS_SUPPORT_0_9 << (i * 2));
 151                 else
 152                         mcs_map |=
 153                                 (IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2));
 154         }
 155         vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
 156         vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
 157 }
 158
 159 void mt76_set_stream_caps(struct mt76_dev *dev, bool vht)
 160 {
 161         if (dev->cap.has_2ghz)
 162                 mt76_init_stream_cap(dev, &dev->sband_2g.sband, false);
 163         if (dev->cap.has_5ghz)
 164                 mt76_init_stream_cap(dev, &dev->sband_5g.sband, vht);
 165 }
 166 EXPORT_SYMBOL_GPL(mt76_set_stream_caps);
 167
 168 static int
 169 mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
 170                 const struct ieee80211_channel *chan, int n_chan,
 171                 struct ieee80211_rate *rates, int n_rates, bool vht)
 172 {
 173         struct ieee80211_supported_band *sband = &msband->sband;
 174         struct ieee80211_sta_ht_cap *ht_cap;
 175         struct ieee80211_sta_vht_cap *vht_cap;
 176         void *chanlist;
 177         int size;
 178
 179         size = n_chan * sizeof(*chan);
 180         chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
 181         if (!chanlist)
 182                 return -ENOMEM;
 183
 184         msband->chan = devm_kcalloc(dev->dev, n_chan, sizeof(*msband->chan),
 185                                     GFP_KERNEL);
 186         if (!msband->chan)
 187                 return -ENOMEM;
 188
 189         sband->channels = chanlist;
 190         sband->n_channels = n_chan;
 191         sband->bitrates = rates;
 192         sband->n_bitrates = n_rates;
 193         dev->chandef.chan = &sband->channels[0];
 194
 195         ht_cap = &sband->ht_cap;
 196         ht_cap->ht_supported = true;
 197         ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 198                        IEEE80211_HT_CAP_GRN_FLD |
 199                        IEEE80211_HT_CAP_SGI_20 |
 200                        IEEE80211_HT_CAP_SGI_40 |
 201                        (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
 202
 203         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 204         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 205         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
 206
 207         mt76_init_stream_cap(dev, sband, vht);
 208
 209         if (!vht)
 210                 return 0;
 211
 212         vht_cap = &sband->vht_cap;
 213         vht_cap->vht_supported = true;
 214         vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC |
 215                         IEEE80211_VHT_CAP_RXSTBC_1 |
 216                         IEEE80211_VHT_CAP_SHORT_GI_80 |
 217                         (3 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
 218
 219         return 0;
 220 }
 221
 222 static int
 223 mt76_init_sband_2g(struct mt76_dev *dev, struct ieee80211_rate *rates,
 224                    int n_rates)
 225 {
 226         dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = &dev->sband_2g.sband;
 227
 228         return mt76_init_sband(dev, &dev->sband_2g,
 229                                mt76_channels_2ghz,
 230                                ARRAY_SIZE(mt76_channels_2ghz),
 231                                rates, n_rates, false);
 232 }
 233
 234 static int
 235 mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
 236                    int n_rates, bool vht)
 237 {
 238         dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = &dev->sband_5g.sband;
 239
 240         return mt76_init_sband(dev, &dev->sband_5g,
 241                                mt76_channels_5ghz,
 242                                ARRAY_SIZE(mt76_channels_5ghz),
 243                                rates, n_rates, vht);
 244 }
 245
 246 static void
 247 mt76_check_sband(struct mt76_dev *dev, int band)
 248 {
 249         struct ieee80211_supported_band *sband = dev->hw->wiphy->bands[band];
 250         bool found = false;
 251         int i;
 252
 253         if (!sband)
 254                 return;
 255
 256         for (i = 0; i < sband->n_channels; i++) {
 257                 if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED)
 258                         continue;
 259
 260                 found = true;
 261                 break;
 262         }
 263
 264         if (found)
 265                 return;
 266
 267         sband->n_channels = 0;
 268         dev->hw->wiphy->bands[band] = NULL;
 269 }
 270
 271 struct mt76_dev *
 272 mt76_alloc_device(unsigned int size, const struct ieee80211_ops *ops)
 273 {
 274         struct ieee80211_hw *hw;
 275         struct mt76_dev *dev;
 276
 277         hw = ieee80211_alloc_hw(size, ops);
 278         if (!hw)
 279                 return NULL;
 280
 281         dev = hw->priv;
 282         dev->hw = hw;
 283         spin_lock_init(&dev->rx_lock);
 284         spin_lock_init(&dev->lock);
 285         spin_lock_init(&dev->cc_lock);
 286         mutex_init(&dev->mutex);
 287         init_waitqueue_head(&dev->tx_wait);
 288
 289         return dev;
 290 }
 291 EXPORT_SYMBOL_GPL(mt76_alloc_device);
 292
 293 int mt76_register_device(struct mt76_dev *dev, bool vht,
 294                          struct ieee80211_rate *rates, int n_rates)
 295 {
 296         struct ieee80211_hw *hw = dev->hw;
 297         struct wiphy *wiphy = hw->wiphy;
 298         int ret;
 299
 300         dev_set_drvdata(dev->dev, dev);
 301
 302         INIT_LIST_HEAD(&dev->txwi_cache);
 303
 304         SET_IEEE80211_DEV(hw, dev->dev);
 305         SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
 306
 307         wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
 308
 309         wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
 310
 311         wiphy->available_antennas_tx = dev->antenna_mask;
 312         wiphy->available_antennas_rx = dev->antenna_mask;
 313
 314         hw->txq_data_size = sizeof(struct mt76_txq);
 315         hw->max_tx_fragments = 16;
 316
 317         ieee80211_hw_set(hw, SIGNAL_DBM);
 318         ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
 319         ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
 320         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 321         ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
 322         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 323         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 324         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 325         ieee80211_hw_set(hw, TX_AMSDU);
 326         ieee80211_hw_set(hw, TX_FRAG_LIST);
 327         ieee80211_hw_set(hw, MFP_CAPABLE);
 328         ieee80211_hw_set(hw, AP_LINK_PS);
 329
 330         wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 331
 332         if (dev->cap.has_2ghz) {
 333                 ret = mt76_init_sband_2g(dev, rates, n_rates);
 334                 if (ret)
 335                         return ret;
 336         }
 337
 338         if (dev->cap.has_5ghz) {
 339                 ret = mt76_init_sband_5g(dev, rates + 4, n_rates - 4, vht);
 340                 if (ret)
 341                         return ret;
 342         }
 343
 344         wiphy_read_of_freq_limits(dev->hw->wiphy);
 345         mt76_check_sband(dev, NL80211_BAND_2GHZ);
 346         mt76_check_sband(dev, NL80211_BAND_5GHZ);
 347
 348         if (IS_ENABLED(CONFIG_MT76_LEDS)) {
 349                 ret = mt76_led_init(dev);
 350                 if (ret)
 351                         return ret;
 352         }
 353
 354         return ieee80211_register_hw(hw);
 355 }
 356 EXPORT_SYMBOL_GPL(mt76_register_device);
 357
 358 void mt76_unregister_device(struct mt76_dev *dev)
 359 {
 360         struct ieee80211_hw *hw = dev->hw;
 361
 362         ieee80211_unregister_hw(hw);
 363         mt76_tx_free(dev);
 364 }
 365 EXPORT_SYMBOL_GPL(mt76_unregister_device);
 366
 367 void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
 368 {
 369         if (!test_bit(MT76_STATE_RUNNING, &dev->state)) {
 370                 dev_kfree_skb(skb);
 371                 return;
 372         }
 373
 374         __skb_queue_tail(&dev->rx_skb[q], skb);
 375 }
 376 EXPORT_SYMBOL_GPL(mt76_rx);
 377
 378 static bool mt76_has_tx_pending(struct mt76_dev *dev)
 379 {
 380         int i;
 381
 382         for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++) {
 383                 if (dev->q_tx[i].queued)
 384                         return true;
 385         }
 386
 387         return false;
 388 }
 389
 390 void mt76_set_channel(struct mt76_dev *dev)
 391 {
 392         struct ieee80211_hw *hw = dev->hw;
 393         struct cfg80211_chan_def *chandef = &hw->conf.chandef;
 394         struct mt76_channel_state *state;
 395         bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
 396         int timeout = HZ / 5;
 397
 398         if (offchannel)
 399                 set_bit(MT76_OFFCHANNEL, &dev->state);
 400         else
 401                 clear_bit(MT76_OFFCHANNEL, &dev->state);
 402
 403         wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(dev), timeout);
 404
 405         if (dev->drv->update_survey)
 406                 dev->drv->update_survey(dev);
 407
 408         dev->chandef = *chandef;
 409
 410         if (!offchannel)
 411                 dev->main_chan = chandef->chan;
 412
 413         if (chandef->chan != dev->main_chan) {
 414                 state = mt76_channel_state(dev, chandef->chan);
 415                 memset(state, 0, sizeof(*state));
 416         }
 417 }
 418 EXPORT_SYMBOL_GPL(mt76_set_channel);
 419
 420 int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 421                     struct survey_info *survey)
 422 {
 423         struct mt76_dev *dev = hw->priv;
 424         struct mt76_sband *sband;
 425         struct ieee80211_channel *chan;
 426         struct mt76_channel_state *state;
 427         int ret = 0;
 428
 429         if (idx == 0 && dev->drv->update_survey)
 430                 dev->drv->update_survey(dev);
 431
 432         sband = &dev->sband_2g;
 433         if (idx >= sband->sband.n_channels) {
 434                 idx -= sband->sband.n_channels;
 435                 sband = &dev->sband_5g;
 436         }
 437
 438         if (idx >= sband->sband.n_channels)
 439                 return -ENOENT;
 440
 441         chan = &sband->sband.channels[idx];
 442         state = mt76_channel_state(dev, chan);
 443
 444         memset(survey, 0, sizeof(*survey));
 445         survey->channel = chan;
 446         survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY;
 447         if (chan == dev->main_chan)
 448                 survey->filled |= SURVEY_INFO_IN_USE;
 449
 450         spin_lock_bh(&dev->cc_lock);
 451         survey->time = div_u64(state->cc_active, 1000);
 452         survey->time_busy = div_u64(state->cc_busy, 1000);
 453         spin_unlock_bh(&dev->cc_lock);
 454
 455         return ret;
 456 }
 457 EXPORT_SYMBOL_GPL(mt76_get_survey);
 458
 459 void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
 460                          struct ieee80211_key_conf *key)
 461 {
 462         struct ieee80211_key_seq seq;
 463         int i;
 464
 465         wcid->rx_check_pn = false;
 466
 467         if (!key)
 468                 return;
 469
 470         if (key->cipher == WLAN_CIPHER_SUITE_CCMP)
 471                 wcid->rx_check_pn = true;
 472
 473         for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
 474                 ieee80211_get_key_rx_seq(key, i, &seq);
 475                 memcpy(wcid->rx_key_pn[i], seq.ccmp.pn, sizeof(seq.ccmp.pn));
 476         }
 477 }
 478 EXPORT_SYMBOL(mt76_wcid_key_setup);
 479
 480 struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb)
 481 {
 482         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 483         struct mt76_rx_status mstat;
 484
 485         mstat = *((struct mt76_rx_status *) skb->cb);
 486         memset(status, 0, sizeof(*status));
 487
 488         status->flag = mstat.flag;
 489         status->freq = mstat.freq;
 490         status->enc_flags = mstat.enc_flags;
 491         status->encoding = mstat.encoding;
 492         status->bw = mstat.bw;
 493         status->rate_idx = mstat.rate_idx;
 494         status->nss = mstat.nss;
 495         status->band = mstat.band;
 496         status->signal = mstat.signal;
 497         status->chains = mstat.chains;
 498
 499         BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
 500         BUILD_BUG_ON(sizeof(status->chain_signal) != sizeof(mstat.chain_signal));
 501         memcpy(status->chain_signal, mstat.chain_signal, sizeof(mstat.chain_signal));
 502
 503         return wcid_to_sta(mstat.wcid);
 504 }
 505 EXPORT_SYMBOL(mt76_rx_convert);
 506
 507 static int
 508 mt76_check_ccmp_pn(struct sk_buff *skb)
 509 {
 510         struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
 511         struct mt76_wcid *wcid = status->wcid;
 512         struct ieee80211_hdr *hdr;
 513         int ret;
 514
 515         if (!(status->flag & RX_FLAG_DECRYPTED))
 516                 return 0;
 517
 518         if (!wcid || !wcid->rx_check_pn)
 519                 return 0;
 520
 521         if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
 522                 /*
 523                  * Validate the first fragment both here and in mac80211
 524                  * All further fragments will be validated by mac80211 only.
 525                  */
 526                 hdr = (struct ieee80211_hdr *) skb->data;
 527                 if (ieee80211_is_frag(hdr) &&
 528                     !ieee80211_is_first_frag(hdr->frame_control))
 529                         return 0;
 530         }
 531
 532         BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0]));
 533         ret = memcmp(status->iv, wcid->rx_key_pn[status->tid],
 534                      sizeof(status->iv));
 535         if (ret <= 0)
 536                 return -EINVAL; /* replay */
 537
 538         memcpy(wcid->rx_key_pn[status->tid], status->iv, sizeof(status->iv));
 539
 540         if (status->flag & RX_FLAG_IV_STRIPPED)
 541                 status->flag |= RX_FLAG_PN_VALIDATED;
 542
 543         return 0;
 544 }
 545
 546 static void
 547 mt76_check_ps(struct mt76_dev *dev, struct sk_buff *skb)
 548 {
 549         struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
 550         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 551         struct ieee80211_sta *sta;
 552         struct mt76_wcid *wcid = status->wcid;
 553         bool ps;
 554
 555         if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
 556                 sta = ieee80211_find_sta_by_ifaddr(dev->hw, hdr->addr2, NULL);
 557                 if (sta)
 558                         wcid = status->wcid = (struct mt76_wcid *) sta->drv_priv;
 559         }
 560
 561         if (!wcid || !wcid->sta)
 562                 return;
 563
 564         sta = container_of((void *) wcid, struct ieee80211_sta, drv_priv);
 565
 566         if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags))
 567                 return;
 568
 569         if (ieee80211_is_pspoll(hdr->frame_control)) {
 570                 ieee80211_sta_pspoll(sta);
 571                 return;
 572         }
 573
 574         if (ieee80211_has_morefrags(hdr->frame_control) ||
 575                 !(ieee80211_is_mgmt(hdr->frame_control) ||
 576                   ieee80211_is_data(hdr->frame_control)))
 577                 return;
 578
 579         ps = ieee80211_has_pm(hdr->frame_control);
 580
 581         if (ps && (ieee80211_is_data_qos(hdr->frame_control) ||
 582                    ieee80211_is_qos_nullfunc(hdr->frame_control)))
 583                 ieee80211_sta_uapsd_trigger(sta, status->tid);
 584
 585         if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps)
 586                 return;
 587
 588         if (ps)
 589                 set_bit(MT_WCID_FLAG_PS, &wcid->flags);
 590         else
 591                 clear_bit(MT_WCID_FLAG_PS, &wcid->flags);
 592
 593         dev->drv->sta_ps(dev, sta, ps);
 594         ieee80211_sta_ps_transition(sta, ps);
 595 }
 596
 597 void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
 598                       struct napi_struct *napi)
 599 {
 600         struct ieee80211_sta *sta;
 601         struct sk_buff *skb;
 602
 603         spin_lock(&dev->rx_lock);
 604         while ((skb = __skb_dequeue(frames)) != NULL) {
 605                 if (mt76_check_ccmp_pn(skb)) {
 606                         dev_kfree_skb(skb);
 607                         continue;
 608                 }
 609
 610                 sta = mt76_rx_convert(skb);
 611                 ieee80211_rx_napi(dev->hw, sta, skb, napi);
 612         }
 613         spin_unlock(&dev->rx_lock);
 614 }
 615
 616 void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q,
 617                            struct napi_struct *napi)
 618 {
 619         struct sk_buff_head frames;
 620         struct sk_buff *skb;
 621
 622         __skb_queue_head_init(&frames);
 623
 624         while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL) {
 625                 mt76_check_ps(dev, skb);
 626                 mt76_rx_aggr_reorder(skb, &frames);
 627         }
 628
 629         mt76_rx_complete(dev, &frames, napi);
 630 }
 631 EXPORT_SYMBOL_GPL(mt76_rx_poll_complete);