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

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   4  */
   5
   6 #include "mt76.h"
   7
   8 static int
   9 mt76_txq_get_qid(struct ieee80211_txq *txq)
  10 {
  11         if (!txq->sta)
  12                 return MT_TXQ_BE;
  13
  14         return txq->ac;
  15 }
  16
  17 void
  18 mt76_tx_check_agg_ssn(struct ieee80211_sta *sta, struct sk_buff *skb)
  19 {
  20         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
  21         struct ieee80211_txq *txq;
  22         struct mt76_txq *mtxq;
  23         u8 tid;
  24
  25         if (!sta || !ieee80211_is_data_qos(hdr->frame_control) ||
  26             !ieee80211_is_data_present(hdr->frame_control))
  27                 return;
  28
  29         tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
  30         txq = sta->txq[tid];
  31         mtxq = (struct mt76_txq *)txq->drv_priv;
  32         if (!mtxq->aggr)
  33                 return;
  34
  35         mtxq->agg_ssn = le16_to_cpu(hdr->seq_ctrl) + 0x10;
  36 }
  37 EXPORT_SYMBOL_GPL(mt76_tx_check_agg_ssn);
  38
  39 void
  40 mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
  41                    __acquires(&dev->status_list.lock)
  42 {
  43         __skb_queue_head_init(list);
  44         spin_lock_bh(&dev->status_list.lock);
  45 }
  46 EXPORT_SYMBOL_GPL(mt76_tx_status_lock);
  47
  48 void
  49 mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
  50                       __releases(&dev->status_list.lock)
  51 {
  52         struct ieee80211_hw *hw;
  53         struct sk_buff *skb;
  54
  55         spin_unlock_bh(&dev->status_list.lock);
  56
  57         while ((skb = __skb_dequeue(list)) != NULL) {
  58                 hw = mt76_tx_status_get_hw(dev, skb);
  59                 ieee80211_tx_status(hw, skb);
  60         }
  61
  62 }
  63 EXPORT_SYMBOL_GPL(mt76_tx_status_unlock);
  64
  65 static void
  66 __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags,
  67                           struct sk_buff_head *list)
  68 {
  69         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
  70         struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
  71         u8 done = MT_TX_CB_DMA_DONE | MT_TX_CB_TXS_DONE;
  72
  73         flags |= cb->flags;
  74         cb->flags = flags;
  75
  76         if ((flags & done) != done)
  77                 return;
  78
  79         __skb_unlink(skb, &dev->status_list);
  80
  81         /* Tx status can be unreliable. if it fails, mark the frame as ACKed */
  82         if (flags & MT_TX_CB_TXS_FAILED) {
  83                 ieee80211_tx_info_clear_status(info);
  84                 info->status.rates[0].idx = -1;
  85                 info->flags |= IEEE80211_TX_STAT_ACK;
  86         }
  87
  88         __skb_queue_tail(list, skb);
  89 }
  90
  91 void
  92 mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb,
  93                         struct sk_buff_head *list)
  94 {
  95         __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_DONE, list);
  96 }
  97 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_done);
  98
  99 int
 100 mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 101                        struct sk_buff *skb)
 102 {
 103         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 104         struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
 105         int pid;
 106
 107         if (!wcid)
 108                 return MT_PACKET_ID_NO_ACK;
 109
 110         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 111                 return MT_PACKET_ID_NO_ACK;
 112
 113         if (!(info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
 114                              IEEE80211_TX_CTL_RATE_CTRL_PROBE)))
 115                 return MT_PACKET_ID_NO_SKB;
 116
 117         spin_lock_bh(&dev->status_list.lock);
 118
 119         memset(cb, 0, sizeof(*cb));
 120         wcid->packet_id = (wcid->packet_id + 1) & MT_PACKET_ID_MASK;
 121         if (wcid->packet_id == MT_PACKET_ID_NO_ACK ||
 122             wcid->packet_id == MT_PACKET_ID_NO_SKB)
 123                 wcid->packet_id = MT_PACKET_ID_FIRST;
 124
 125         pid = wcid->packet_id;
 126         cb->wcid = wcid->idx;
 127         cb->pktid = pid;
 128         cb->jiffies = jiffies;
 129
 130         __skb_queue_tail(&dev->status_list, skb);
 131         spin_unlock_bh(&dev->status_list.lock);
 132
 133         return pid;
 134 }
 135 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_add);
 136
 137 struct sk_buff *
 138 mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid,
 139                        struct sk_buff_head *list)
 140 {
 141         struct sk_buff *skb, *tmp;
 142
 143         skb_queue_walk_safe(&dev->status_list, skb, tmp) {
 144                 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
 145
 146                 if (wcid && cb->wcid != wcid->idx)
 147                         continue;
 148
 149                 if (cb->pktid == pktid)
 150                         return skb;
 151
 152                 if (pktid >= 0 && !time_after(jiffies, cb->jiffies +
 153                                               MT_TX_STATUS_SKB_TIMEOUT))
 154                         continue;
 155
 156                 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_FAILED |
 157                                                     MT_TX_CB_TXS_DONE, list);
 158         }
 159
 160         return NULL;
 161 }
 162 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_get);
 163
 164 void
 165 mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid, bool flush)
 166 {
 167         struct sk_buff_head list;
 168
 169         mt76_tx_status_lock(dev, &list);
 170         mt76_tx_status_skb_get(dev, wcid, flush ? -1 : 0, &list);
 171         mt76_tx_status_unlock(dev, &list);
 172 }
 173 EXPORT_SYMBOL_GPL(mt76_tx_status_check);
 174
 175 static void
 176 mt76_tx_check_non_aql(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *skb)
 177 {
 178         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 179         struct mt76_wcid *wcid;
 180         int pending;
 181
 182         if (info->tx_time_est)
 183                 return;
 184
 185         if (wcid_idx >= ARRAY_SIZE(dev->wcid))
 186                 return;
 187
 188         rcu_read_lock();
 189
 190         wcid = rcu_dereference(dev->wcid[wcid_idx]);
 191         if (wcid) {
 192                 pending = atomic_dec_return(&wcid->non_aql_packets);
 193                 if (pending < 0)
 194                         atomic_cmpxchg(&wcid->non_aql_packets, pending, 0);
 195         }
 196
 197         rcu_read_unlock();
 198 }
 199
 200 void mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *skb)
 201 {
 202         struct ieee80211_hw *hw;
 203         struct sk_buff_head list;
 204
 205 #ifdef CONFIG_NL80211_TESTMODE
 206         if (skb == dev->test.tx_skb) {
 207                 dev->test.tx_done++;
 208                 if (dev->test.tx_queued == dev->test.tx_done)
 209                         wake_up(&dev->tx_wait);
 210         }
 211 #endif
 212
 213         mt76_tx_check_non_aql(dev, wcid_idx, skb);
 214
 215         if (!skb->prev) {
 216                 hw = mt76_tx_status_get_hw(dev, skb);
 217                 ieee80211_free_txskb(hw, skb);
 218                 return;
 219         }
 220
 221         mt76_tx_status_lock(dev, &list);
 222         __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_DMA_DONE, &list);
 223         mt76_tx_status_unlock(dev, &list);
 224 }
 225 EXPORT_SYMBOL_GPL(mt76_tx_complete_skb);
 226
 227 static int
 228 __mt76_tx_queue_skb(struct mt76_phy *phy, int qid, struct sk_buff *skb,
 229                     struct mt76_wcid *wcid, struct ieee80211_sta *sta,
 230                     bool *stop)
 231 {
 232         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 233         struct mt76_queue *q = phy->q_tx[qid];
 234         struct mt76_dev *dev = phy->dev;
 235         bool non_aql;
 236         int pending;
 237         int idx;
 238
 239         non_aql = !info->tx_time_est;
 240         idx = dev->queue_ops->tx_queue_skb(dev, q, skb, wcid, sta);
 241         if (idx < 0 || !sta || !non_aql)
 242                 return idx;
 243
 244         wcid = (struct mt76_wcid *)sta->drv_priv;
 245         q->entry[idx].wcid = wcid->idx;
 246         pending = atomic_inc_return(&wcid->non_aql_packets);
 247         if (stop && pending >= MT_MAX_NON_AQL_PKT)
 248                 *stop = true;
 249
 250         return idx;
 251 }
 252
 253 void
 254 mt76_tx(struct mt76_phy *phy, struct ieee80211_sta *sta,
 255         struct mt76_wcid *wcid, struct sk_buff *skb)
 256 {
 257         struct mt76_dev *dev = phy->dev;
 258         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 259         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 260         struct mt76_queue *q;
 261         int qid = skb_get_queue_mapping(skb);
 262         bool ext_phy = phy != &dev->phy;
 263
 264         if (mt76_testmode_enabled(dev)) {
 265                 ieee80211_free_txskb(phy->hw, skb);
 266                 return;
 267         }
 268
 269         if (WARN_ON(qid >= MT_TXQ_PSD)) {
 270                 qid = MT_TXQ_BE;
 271                 skb_set_queue_mapping(skb, qid);
 272         }
 273
 274         if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) &&
 275             !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
 276             !ieee80211_is_data(hdr->frame_control) &&
 277             !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) {
 278                 qid = MT_TXQ_PSD;
 279                 skb_set_queue_mapping(skb, qid);
 280         }
 281
 282         if (!(wcid->tx_info & MT_WCID_TX_INFO_SET))
 283                 ieee80211_get_tx_rates(info->control.vif, sta, skb,
 284                                        info->control.rates, 1);
 285
 286         if (ext_phy)
 287                 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
 288
 289         q = phy->q_tx[qid];
 290
 291         spin_lock_bh(&q->lock);
 292         __mt76_tx_queue_skb(phy, qid, skb, wcid, sta, NULL);
 293         dev->queue_ops->kick(dev, q);
 294         spin_unlock_bh(&q->lock);
 295 }
 296 EXPORT_SYMBOL_GPL(mt76_tx);
 297
 298 static struct sk_buff *
 299 mt76_txq_dequeue(struct mt76_phy *phy, struct mt76_txq *mtxq)
 300 {
 301         struct ieee80211_txq *txq = mtxq_to_txq(mtxq);
 302         struct ieee80211_tx_info *info;
 303         bool ext_phy = phy != &phy->dev->phy;
 304         struct sk_buff *skb;
 305
 306         skb = ieee80211_tx_dequeue(phy->hw, txq);
 307         if (!skb)
 308                 return NULL;
 309
 310         info = IEEE80211_SKB_CB(skb);
 311         if (ext_phy)
 312                 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
 313
 314         return skb;
 315 }
 316
 317 static void
 318 mt76_queue_ps_skb(struct mt76_phy *phy, struct ieee80211_sta *sta,
 319                   struct sk_buff *skb, bool last)
 320 {
 321         struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
 322         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 323
 324         info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
 325         if (last)
 326                 info->flags |= IEEE80211_TX_STATUS_EOSP |
 327                                IEEE80211_TX_CTL_REQ_TX_STATUS;
 328
 329         mt76_skb_set_moredata(skb, !last);
 330         __mt76_tx_queue_skb(phy, MT_TXQ_PSD, skb, wcid, sta, NULL);
 331 }
 332
 333 void
 334 mt76_release_buffered_frames(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
 335                              u16 tids, int nframes,
 336                              enum ieee80211_frame_release_type reason,
 337                              bool more_data)
 338 {
 339         struct mt76_phy *phy = hw->priv;
 340         struct mt76_dev *dev = phy->dev;
 341         struct sk_buff *last_skb = NULL;
 342         struct mt76_queue *hwq = phy->q_tx[MT_TXQ_PSD];
 343         int i;
 344
 345         spin_lock_bh(&hwq->lock);
 346         for (i = 0; tids && nframes; i++, tids >>= 1) {
 347                 struct ieee80211_txq *txq = sta->txq[i];
 348                 struct mt76_txq *mtxq = (struct mt76_txq *)txq->drv_priv;
 349                 struct sk_buff *skb;
 350
 351                 if (!(tids & 1))
 352                         continue;
 353
 354                 do {
 355                         skb = mt76_txq_dequeue(phy, mtxq);
 356                         if (!skb)
 357                                 break;
 358
 359                         nframes--;
 360                         if (last_skb)
 361                                 mt76_queue_ps_skb(phy, sta, last_skb, false);
 362
 363                         last_skb = skb;
 364                 } while (nframes);
 365         }
 366
 367         if (last_skb) {
 368                 mt76_queue_ps_skb(phy, sta, last_skb, true);
 369                 dev->queue_ops->kick(dev, hwq);
 370         } else {
 371                 ieee80211_sta_eosp(sta);
 372         }
 373
 374         spin_unlock_bh(&hwq->lock);
 375 }
 376 EXPORT_SYMBOL_GPL(mt76_release_buffered_frames);
 377
 378 static bool
 379 mt76_txq_stopped(struct mt76_queue *q)
 380 {
 381         return q->stopped || q->blocked ||
 382                q->queued + MT_TXQ_FREE_THR >= q->ndesc;
 383 }
 384
 385 static int
 386 mt76_txq_send_burst(struct mt76_phy *phy, struct mt76_queue *q,
 387                     struct mt76_txq *mtxq)
 388 {
 389         struct mt76_dev *dev = phy->dev;
 390         struct ieee80211_txq *txq = mtxq_to_txq(mtxq);
 391         enum mt76_txq_id qid = mt76_txq_get_qid(txq);
 392         struct mt76_wcid *wcid = mtxq->wcid;
 393         struct ieee80211_tx_info *info;
 394         struct sk_buff *skb;
 395         int n_frames = 1;
 396         bool stop = false;
 397         int idx;
 398
 399         if (test_bit(MT_WCID_FLAG_PS, &wcid->flags))
 400                 return 0;
 401
 402         if (atomic_read(&wcid->non_aql_packets) >= MT_MAX_NON_AQL_PKT)
 403                 return 0;
 404
 405         skb = mt76_txq_dequeue(phy, mtxq);
 406         if (!skb)
 407                 return 0;
 408
 409         info = IEEE80211_SKB_CB(skb);
 410         if (!(wcid->tx_info & MT_WCID_TX_INFO_SET))
 411                 ieee80211_get_tx_rates(txq->vif, txq->sta, skb,
 412                                        info->control.rates, 1);
 413
 414         idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop);
 415         if (idx < 0)
 416                 return idx;
 417
 418         do {
 419                 if (test_bit(MT76_STATE_PM, &phy->state) ||
 420                     test_bit(MT76_RESET, &phy->state))
 421                         return -EBUSY;
 422
 423                 if (stop || mt76_txq_stopped(q))
 424                         break;
 425
 426                 skb = mt76_txq_dequeue(phy, mtxq);
 427                 if (!skb)
 428                         break;
 429
 430                 info = IEEE80211_SKB_CB(skb);
 431                 if (!(wcid->tx_info & MT_WCID_TX_INFO_SET))
 432                         ieee80211_get_tx_rates(txq->vif, txq->sta, skb,
 433                                                info->control.rates, 1);
 434
 435                 idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop);
 436                 if (idx < 0)
 437                         break;
 438
 439                 n_frames++;
 440         } while (1);
 441
 442         dev->queue_ops->kick(dev, q);
 443
 444         return n_frames;
 445 }
 446
 447 static int
 448 mt76_txq_schedule_list(struct mt76_phy *phy, enum mt76_txq_id qid)
 449 {
 450         struct mt76_queue *q = phy->q_tx[qid];
 451         struct mt76_dev *dev = phy->dev;
 452         struct ieee80211_txq *txq;
 453         struct mt76_txq *mtxq;
 454         struct mt76_wcid *wcid;
 455         int ret = 0;
 456
 457         spin_lock_bh(&q->lock);
 458         while (1) {
 459                 if (test_bit(MT76_STATE_PM, &phy->state) ||
 460                     test_bit(MT76_RESET, &phy->state)) {
 461                         ret = -EBUSY;
 462                         break;
 463                 }
 464
 465                 if (dev->queue_ops->tx_cleanup &&
 466                     q->queued + 2 * MT_TXQ_FREE_THR >= q->ndesc) {
 467                         spin_unlock_bh(&q->lock);
 468                         dev->queue_ops->tx_cleanup(dev, q, false);
 469                         spin_lock_bh(&q->lock);
 470                 }
 471
 472                 if (mt76_txq_stopped(q))
 473                         break;
 474
 475                 txq = ieee80211_next_txq(phy->hw, qid);
 476                 if (!txq)
 477                         break;
 478
 479                 mtxq = (struct mt76_txq *)txq->drv_priv;
 480                 wcid = mtxq->wcid;
 481                 if (wcid && test_bit(MT_WCID_FLAG_PS, &wcid->flags))
 482                         continue;
 483
 484                 if (mtxq->send_bar && mtxq->aggr) {
 485                         struct ieee80211_txq *txq = mtxq_to_txq(mtxq);
 486                         struct ieee80211_sta *sta = txq->sta;
 487                         struct ieee80211_vif *vif = txq->vif;
 488                         u16 agg_ssn = mtxq->agg_ssn;
 489                         u8 tid = txq->tid;
 490
 491                         mtxq->send_bar = false;
 492                         spin_unlock_bh(&q->lock);
 493                         ieee80211_send_bar(vif, sta->addr, tid, agg_ssn);
 494                         spin_lock_bh(&q->lock);
 495                 }
 496
 497                 ret += mt76_txq_send_burst(phy, q, mtxq);
 498                 ieee80211_return_txq(phy->hw, txq, false);
 499         }
 500         spin_unlock_bh(&q->lock);
 501
 502         return ret;
 503 }
 504
 505 void mt76_txq_schedule(struct mt76_phy *phy, enum mt76_txq_id qid)
 506 {
 507         int len;
 508
 509         if (qid >= 4)
 510                 return;
 511
 512         rcu_read_lock();
 513
 514         do {
 515                 ieee80211_txq_schedule_start(phy->hw, qid);
 516                 len = mt76_txq_schedule_list(phy, qid);
 517                 ieee80211_txq_schedule_end(phy->hw, qid);
 518         } while (len > 0);
 519
 520         rcu_read_unlock();
 521 }
 522 EXPORT_SYMBOL_GPL(mt76_txq_schedule);
 523
 524 void mt76_txq_schedule_all(struct mt76_phy *phy)
 525 {
 526         int i;
 527
 528         for (i = 0; i <= MT_TXQ_BK; i++)
 529                 mt76_txq_schedule(phy, i);
 530 }
 531 EXPORT_SYMBOL_GPL(mt76_txq_schedule_all);
 532
 533 void mt76_tx_worker(struct mt76_worker *w)
 534 {
 535         struct mt76_dev *dev = container_of(w, struct mt76_dev, tx_worker);
 536
 537         mt76_txq_schedule_all(&dev->phy);
 538         if (dev->phy2)
 539                 mt76_txq_schedule_all(dev->phy2);
 540
 541 #ifdef CONFIG_NL80211_TESTMODE
 542         if (dev->test.tx_pending)
 543                 mt76_testmode_tx_pending(dev);
 544 #endif
 545 }
 546
 547 void mt76_stop_tx_queues(struct mt76_phy *phy, struct ieee80211_sta *sta,
 548                          bool send_bar)
 549 {
 550         int i;
 551
 552         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
 553                 struct ieee80211_txq *txq = sta->txq[i];
 554                 struct mt76_queue *hwq;
 555                 struct mt76_txq *mtxq;
 556
 557                 if (!txq)
 558                         continue;
 559
 560                 hwq = phy->q_tx[mt76_txq_get_qid(txq)];
 561                 mtxq = (struct mt76_txq *)txq->drv_priv;
 562
 563                 spin_lock_bh(&hwq->lock);
 564                 mtxq->send_bar = mtxq->aggr && send_bar;
 565                 spin_unlock_bh(&hwq->lock);
 566         }
 567 }
 568 EXPORT_SYMBOL_GPL(mt76_stop_tx_queues);
 569
 570 void mt76_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
 571 {
 572         struct mt76_phy *phy = hw->priv;
 573         struct mt76_dev *dev = phy->dev;
 574
 575         if (!test_bit(MT76_STATE_RUNNING, &phy->state))
 576                 return;
 577
 578         mt76_worker_schedule(&dev->tx_worker);
 579 }
 580 EXPORT_SYMBOL_GPL(mt76_wake_tx_queue);
 581
 582 u8 mt76_ac_to_hwq(u8 ac)
 583 {
 584         static const u8 wmm_queue_map[] = {
 585                 [IEEE80211_AC_BE] = 0,
 586                 [IEEE80211_AC_BK] = 1,
 587                 [IEEE80211_AC_VI] = 2,
 588                 [IEEE80211_AC_VO] = 3,
 589         };
 590
 591         if (WARN_ON(ac >= IEEE80211_NUM_ACS))
 592                 return 0;
 593
 594         return wmm_queue_map[ac];
 595 }
 596 EXPORT_SYMBOL_GPL(mt76_ac_to_hwq);
 597
 598 int mt76_skb_adjust_pad(struct sk_buff *skb, int pad)
 599 {
 600         struct sk_buff *iter, *last = skb;
 601
 602         /* First packet of a A-MSDU burst keeps track of the whole burst
 603          * length, need to update length of it and the last packet.
 604          */
 605         skb_walk_frags(skb, iter) {
 606                 last = iter;
 607                 if (!iter->next) {
 608                         skb->data_len += pad;
 609                         skb->len += pad;
 610                         break;
 611                 }
 612         }
 613
 614         if (skb_pad(last, pad))
 615                 return -ENOMEM;
 616
 617         __skb_put(last, pad);
 618
 619         return 0;
 620 }
 621 EXPORT_SYMBOL_GPL(mt76_skb_adjust_pad);
 622
 623 void mt76_queue_tx_complete(struct mt76_dev *dev, struct mt76_queue *q,
 624                             struct mt76_queue_entry *e)
 625 {
 626         if (e->skb)
 627                 dev->drv->tx_complete_skb(dev, e);
 628
 629         spin_lock_bh(&q->lock);
 630         q->tail = (q->tail + 1) % q->ndesc;
 631         q->queued--;
 632         spin_unlock_bh(&q->lock);
 633 }
 634 EXPORT_SYMBOL_GPL(mt76_queue_tx_complete);