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_lock) 42 { 43 __skb_queue_head_init(list); 44 spin_lock_bh(&dev->status_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_lock) 51 { 52 struct ieee80211_hw *hw; 53 struct sk_buff *skb; 54 55 spin_unlock_bh(&dev->status_lock); 56 57 rcu_read_lock(); 58 while ((skb = __skb_dequeue(list)) != NULL) { 59 struct ieee80211_tx_status status = { 60 .skb = skb, 61 .info = IEEE80211_SKB_CB(skb), 62 }; 63 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); 64 struct mt76_wcid *wcid; 65 66 wcid = rcu_dereference(dev->wcid[cb->wcid]); 67 if (wcid) { 68 status.sta = wcid_to_sta(wcid); 69 status.rates = NULL; 70 status.n_rates = 0; 71 } 72 73 hw = mt76_tx_status_get_hw(dev, skb); 74 ieee80211_tx_status_ext(hw, &status); 75 } 76 rcu_read_unlock(); 77 } 78 EXPORT_SYMBOL_GPL(mt76_tx_status_unlock); 79 80 static void 81 __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags, 82 struct sk_buff_head *list) 83 { 84 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 85 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); 86 u8 done = MT_TX_CB_DMA_DONE | MT_TX_CB_TXS_DONE; 87 88 flags |= cb->flags; 89 cb->flags = flags; 90 91 if ((flags & done) != done) 92 return; 93 94 /* Tx status can be unreliable. if it fails, mark the frame as ACKed */ 95 if (flags & MT_TX_CB_TXS_FAILED) { 96 info->status.rates[0].count = 0; 97 info->status.rates[0].idx = -1; 98 info->flags |= IEEE80211_TX_STAT_ACK; 99 } 100 101 __skb_queue_tail(list, skb); 102 } 103 104 void 105 mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, 106 struct sk_buff_head *list) 107 { 108 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_DONE, list); 109 } 110 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_done); 111 112 int 113 mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid, 114 struct sk_buff *skb) 115 { 116 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 117 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); 118 int pid; 119 120 memset(cb, 0, sizeof(*cb)); 121 122 if (!wcid || !rcu_access_pointer(dev->wcid[wcid->idx])) 123 return MT_PACKET_ID_NO_ACK; 124 125 if (info->flags & IEEE80211_TX_CTL_NO_ACK) 126 return MT_PACKET_ID_NO_ACK; 127 128 if (!(info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS | 129 IEEE80211_TX_CTL_RATE_CTRL_PROBE))) 130 return MT_PACKET_ID_NO_SKB; 131 132 spin_lock_bh(&dev->status_lock); 133 134 pid = idr_alloc(&wcid->pktid, skb, MT_PACKET_ID_FIRST, 135 MT_PACKET_ID_MASK, GFP_ATOMIC); 136 if (pid < 0) { 137 pid = MT_PACKET_ID_NO_SKB; 138 goto out; 139 } 140 141 cb->wcid = wcid->idx; 142 cb->pktid = pid; 143 144 if (list_empty(&wcid->list)) 145 list_add_tail(&wcid->list, &dev->wcid_list); 146 147 out: 148 spin_unlock_bh(&dev->status_lock); 149 150 return pid; 151 } 152 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_add); 153 154 struct sk_buff * 155 mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid, 156 struct sk_buff_head *list) 157 { 158 struct sk_buff *skb; 159 int id; 160 161 lockdep_assert_held(&dev->status_lock); 162 163 skb = idr_remove(&wcid->pktid, pktid); 164 if (skb) 165 goto out; 166 167 /* look for stale entries in the wcid idr queue */ 168 idr_for_each_entry(&wcid->pktid, skb, id) { 169 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); 170 171 if (pktid >= 0) { 172 if (!(cb->flags & MT_TX_CB_DMA_DONE)) 173 continue; 174 175 if (time_is_after_jiffies(cb->jiffies + 176 MT_TX_STATUS_SKB_TIMEOUT)) 177 continue; 178 } 179 180 /* It has been too long since DMA_DONE, time out this packet 181 * and stop waiting for TXS callback. 182 */ 183 idr_remove(&wcid->pktid, cb->pktid); 184 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_FAILED | 185 MT_TX_CB_TXS_DONE, list); 186 } 187 188 out: 189 if (idr_is_empty(&wcid->pktid)) 190 list_del_init(&wcid->list); 191 192 return skb; 193 } 194 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_get); 195 196 void 197 mt76_tx_status_check(struct mt76_dev *dev, bool flush) 198 { 199 struct mt76_wcid *wcid, *tmp; 200 struct sk_buff_head list; 201 202 mt76_tx_status_lock(dev, &list); 203 list_for_each_entry_safe(wcid, tmp, &dev->wcid_list, list) 204 mt76_tx_status_skb_get(dev, wcid, flush ? -1 : 0, &list); 205 mt76_tx_status_unlock(dev, &list); 206 } 207 EXPORT_SYMBOL_GPL(mt76_tx_status_check); 208 209 static void 210 mt76_tx_check_non_aql(struct mt76_dev *dev, struct mt76_wcid *wcid, 211 struct sk_buff *skb) 212 { 213 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 214 int pending; 215 216 if (!wcid || info->tx_time_est) 217 return; 218 219 pending = atomic_dec_return(&wcid->non_aql_packets); 220 if (pending < 0) 221 atomic_cmpxchg(&wcid->non_aql_packets, pending, 0); 222 } 223 224 void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *skb, 225 struct list_head *free_list) 226 { 227 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); 228 struct ieee80211_tx_status status = { 229 .skb = skb, 230 .free_list = free_list, 231 }; 232 struct mt76_wcid *wcid = NULL; 233 struct ieee80211_hw *hw; 234 struct sk_buff_head list; 235 236 rcu_read_lock(); 237 238 if (wcid_idx < ARRAY_SIZE(dev->wcid)) 239 wcid = rcu_dereference(dev->wcid[wcid_idx]); 240 241 mt76_tx_check_non_aql(dev, wcid, skb); 242 243 #ifdef CONFIG_NL80211_TESTMODE 244 if (mt76_is_testmode_skb(dev, skb, &hw)) { 245 struct mt76_phy *phy = hw->priv; 246 247 if (skb == phy->test.tx_skb) 248 phy->test.tx_done++; 249 if (phy->test.tx_queued == phy->test.tx_done) 250 wake_up(&dev->tx_wait); 251 252 dev_kfree_skb_any(skb); 253 goto out; 254 } 255 #endif 256 257 if (cb->pktid < MT_PACKET_ID_FIRST) { 258 hw = mt76_tx_status_get_hw(dev, skb); 259 status.sta = wcid_to_sta(wcid); 260 ieee80211_tx_status_ext(hw, &status); 261 goto out; 262 } 263 264 mt76_tx_status_lock(dev, &list); 265 cb->jiffies = jiffies; 266 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_DMA_DONE, &list); 267 mt76_tx_status_unlock(dev, &list); 268 269 out: 270 rcu_read_unlock(); 271 } 272 EXPORT_SYMBOL_GPL(__mt76_tx_complete_skb); 273 274 static int 275 __mt76_tx_queue_skb(struct mt76_phy *phy, int qid, struct sk_buff *skb, 276 struct mt76_wcid *wcid, struct ieee80211_sta *sta, 277 bool *stop) 278 { 279 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 280 struct mt76_queue *q = phy->q_tx[qid]; 281 struct mt76_dev *dev = phy->dev; 282 bool non_aql; 283 int pending; 284 int idx; 285 286 non_aql = !info->tx_time_est; 287 idx = dev->queue_ops->tx_queue_skb(dev, q, skb, wcid, sta); 288 if (idx < 0 || !sta) 289 return idx; 290 291 wcid = (struct mt76_wcid *)sta->drv_priv; 292 q->entry[idx].wcid = wcid->idx; 293 294 if (!non_aql) 295 return idx; 296 297 pending = atomic_inc_return(&wcid->non_aql_packets); 298 if (stop && pending >= MT_MAX_NON_AQL_PKT) 299 *stop = true; 300 301 return idx; 302 } 303 304 void 305 mt76_tx(struct mt76_phy *phy, struct ieee80211_sta *sta, 306 struct mt76_wcid *wcid, struct sk_buff *skb) 307 { 308 struct mt76_dev *dev = phy->dev; 309 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 310 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 311 struct mt76_queue *q; 312 int qid = skb_get_queue_mapping(skb); 313 bool ext_phy = phy != &dev->phy; 314 315 if (mt76_testmode_enabled(phy)) { 316 ieee80211_free_txskb(phy->hw, skb); 317 return; 318 } 319 320 if (WARN_ON(qid >= MT_TXQ_PSD)) { 321 qid = MT_TXQ_BE; 322 skb_set_queue_mapping(skb, qid); 323 } 324 325 if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) && 326 !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) && 327 !ieee80211_is_data(hdr->frame_control) && 328 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) { 329 qid = MT_TXQ_PSD; 330 skb_set_queue_mapping(skb, qid); 331 } 332 333 if (wcid && !(wcid->tx_info & MT_WCID_TX_INFO_SET)) 334 ieee80211_get_tx_rates(info->control.vif, sta, skb, 335 info->control.rates, 1); 336 337 if (ext_phy) 338 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY; 339 340 q = phy->q_tx[qid]; 341 342 spin_lock_bh(&q->lock); 343 __mt76_tx_queue_skb(phy, qid, skb, wcid, sta, NULL); 344 dev->queue_ops->kick(dev, q); 345 spin_unlock_bh(&q->lock); 346 } 347 EXPORT_SYMBOL_GPL(mt76_tx); 348 349 static struct sk_buff * 350 mt76_txq_dequeue(struct mt76_phy *phy, struct mt76_txq *mtxq) 351 { 352 struct ieee80211_txq *txq = mtxq_to_txq(mtxq); 353 struct ieee80211_tx_info *info; 354 bool ext_phy = phy != &phy->dev->phy; 355 struct sk_buff *skb; 356 357 skb = ieee80211_tx_dequeue(phy->hw, txq); 358 if (!skb) 359 return NULL; 360 361 info = IEEE80211_SKB_CB(skb); 362 if (ext_phy) 363 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY; 364 365 return skb; 366 } 367 368 static void 369 mt76_queue_ps_skb(struct mt76_phy *phy, struct ieee80211_sta *sta, 370 struct sk_buff *skb, bool last) 371 { 372 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; 373 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 374 375 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; 376 if (last) 377 info->flags |= IEEE80211_TX_STATUS_EOSP | 378 IEEE80211_TX_CTL_REQ_TX_STATUS; 379 380 mt76_skb_set_moredata(skb, !last); 381 __mt76_tx_queue_skb(phy, MT_TXQ_PSD, skb, wcid, sta, NULL); 382 } 383 384 void 385 mt76_release_buffered_frames(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 386 u16 tids, int nframes, 387 enum ieee80211_frame_release_type reason, 388 bool more_data) 389 { 390 struct mt76_phy *phy = hw->priv; 391 struct mt76_dev *dev = phy->dev; 392 struct sk_buff *last_skb = NULL; 393 struct mt76_queue *hwq = phy->q_tx[MT_TXQ_PSD]; 394 int i; 395 396 spin_lock_bh(&hwq->lock); 397 for (i = 0; tids && nframes; i++, tids >>= 1) { 398 struct ieee80211_txq *txq = sta->txq[i]; 399 struct mt76_txq *mtxq = (struct mt76_txq *)txq->drv_priv; 400 struct sk_buff *skb; 401 402 if (!(tids & 1)) 403 continue; 404 405 do { 406 skb = mt76_txq_dequeue(phy, mtxq); 407 if (!skb) 408 break; 409 410 nframes--; 411 if (last_skb) 412 mt76_queue_ps_skb(phy, sta, last_skb, false); 413 414 last_skb = skb; 415 } while (nframes); 416 } 417 418 if (last_skb) { 419 mt76_queue_ps_skb(phy, sta, last_skb, true); 420 dev->queue_ops->kick(dev, hwq); 421 } else { 422 ieee80211_sta_eosp(sta); 423 } 424 425 spin_unlock_bh(&hwq->lock); 426 } 427 EXPORT_SYMBOL_GPL(mt76_release_buffered_frames); 428 429 static bool 430 mt76_txq_stopped(struct mt76_queue *q) 431 { 432 return q->stopped || q->blocked || 433 q->queued + MT_TXQ_FREE_THR >= q->ndesc; 434 } 435 436 static int 437 mt76_txq_send_burst(struct mt76_phy *phy, struct mt76_queue *q, 438 struct mt76_txq *mtxq, struct mt76_wcid *wcid) 439 { 440 struct mt76_dev *dev = phy->dev; 441 struct ieee80211_txq *txq = mtxq_to_txq(mtxq); 442 enum mt76_txq_id qid = mt76_txq_get_qid(txq); 443 struct ieee80211_tx_info *info; 444 struct sk_buff *skb; 445 int n_frames = 1; 446 bool stop = false; 447 int idx; 448 449 if (test_bit(MT_WCID_FLAG_PS, &wcid->flags)) 450 return 0; 451 452 if (atomic_read(&wcid->non_aql_packets) >= MT_MAX_NON_AQL_PKT) 453 return 0; 454 455 skb = mt76_txq_dequeue(phy, mtxq); 456 if (!skb) 457 return 0; 458 459 info = IEEE80211_SKB_CB(skb); 460 if (!(wcid->tx_info & MT_WCID_TX_INFO_SET)) 461 ieee80211_get_tx_rates(txq->vif, txq->sta, skb, 462 info->control.rates, 1); 463 464 spin_lock(&q->lock); 465 idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop); 466 spin_unlock(&q->lock); 467 if (idx < 0) 468 return idx; 469 470 do { 471 if (test_bit(MT76_RESET, &phy->state)) 472 return -EBUSY; 473 474 if (stop || mt76_txq_stopped(q)) 475 break; 476 477 skb = mt76_txq_dequeue(phy, mtxq); 478 if (!skb) 479 break; 480 481 info = IEEE80211_SKB_CB(skb); 482 if (!(wcid->tx_info & MT_WCID_TX_INFO_SET)) 483 ieee80211_get_tx_rates(txq->vif, txq->sta, skb, 484 info->control.rates, 1); 485 486 spin_lock(&q->lock); 487 idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop); 488 spin_unlock(&q->lock); 489 if (idx < 0) 490 break; 491 492 n_frames++; 493 } while (1); 494 495 spin_lock(&q->lock); 496 dev->queue_ops->kick(dev, q); 497 spin_unlock(&q->lock); 498 499 return n_frames; 500 } 501 502 static int 503 mt76_txq_schedule_list(struct mt76_phy *phy, enum mt76_txq_id qid) 504 { 505 struct mt76_queue *q = phy->q_tx[qid]; 506 struct mt76_dev *dev = phy->dev; 507 struct ieee80211_txq *txq; 508 struct mt76_txq *mtxq; 509 struct mt76_wcid *wcid; 510 int ret = 0; 511 512 while (1) { 513 int n_frames = 0; 514 515 if (test_bit(MT76_RESET, &phy->state)) 516 return -EBUSY; 517 518 if (dev->queue_ops->tx_cleanup && 519 q->queued + 2 * MT_TXQ_FREE_THR >= q->ndesc) { 520 dev->queue_ops->tx_cleanup(dev, q, false); 521 } 522 523 txq = ieee80211_next_txq(phy->hw, qid); 524 if (!txq) 525 break; 526 527 mtxq = (struct mt76_txq *)txq->drv_priv; 528 wcid = rcu_dereference(dev->wcid[mtxq->wcid]); 529 if (!wcid || test_bit(MT_WCID_FLAG_PS, &wcid->flags)) 530 continue; 531 532 if (mtxq->send_bar && mtxq->aggr) { 533 struct ieee80211_txq *txq = mtxq_to_txq(mtxq); 534 struct ieee80211_sta *sta = txq->sta; 535 struct ieee80211_vif *vif = txq->vif; 536 u16 agg_ssn = mtxq->agg_ssn; 537 u8 tid = txq->tid; 538 539 mtxq->send_bar = false; 540 ieee80211_send_bar(vif, sta->addr, tid, agg_ssn); 541 } 542 543 if (!mt76_txq_stopped(q)) 544 n_frames = mt76_txq_send_burst(phy, q, mtxq, wcid); 545 546 ieee80211_return_txq(phy->hw, txq, false); 547 548 if (unlikely(n_frames < 0)) 549 return n_frames; 550 551 ret += n_frames; 552 } 553 554 return ret; 555 } 556 557 void mt76_txq_schedule(struct mt76_phy *phy, enum mt76_txq_id qid) 558 { 559 int len; 560 561 if (qid >= 4) 562 return; 563 564 local_bh_disable(); 565 rcu_read_lock(); 566 567 do { 568 ieee80211_txq_schedule_start(phy->hw, qid); 569 len = mt76_txq_schedule_list(phy, qid); 570 ieee80211_txq_schedule_end(phy->hw, qid); 571 } while (len > 0); 572 573 rcu_read_unlock(); 574 local_bh_enable(); 575 } 576 EXPORT_SYMBOL_GPL(mt76_txq_schedule); 577 578 void mt76_txq_schedule_all(struct mt76_phy *phy) 579 { 580 int i; 581 582 for (i = 0; i <= MT_TXQ_BK; i++) 583 mt76_txq_schedule(phy, i); 584 } 585 EXPORT_SYMBOL_GPL(mt76_txq_schedule_all); 586 587 void mt76_tx_worker_run(struct mt76_dev *dev) 588 { 589 mt76_txq_schedule_all(&dev->phy); 590 if (dev->phy2) 591 mt76_txq_schedule_all(dev->phy2); 592 593 #ifdef CONFIG_NL80211_TESTMODE 594 if (dev->phy.test.tx_pending) 595 mt76_testmode_tx_pending(&dev->phy); 596 if (dev->phy2 && dev->phy2->test.tx_pending) 597 mt76_testmode_tx_pending(dev->phy2); 598 #endif 599 } 600 EXPORT_SYMBOL_GPL(mt76_tx_worker_run); 601 602 void mt76_tx_worker(struct mt76_worker *w) 603 { 604 struct mt76_dev *dev = container_of(w, struct mt76_dev, tx_worker); 605 606 mt76_tx_worker_run(dev); 607 } 608 609 void mt76_stop_tx_queues(struct mt76_phy *phy, struct ieee80211_sta *sta, 610 bool send_bar) 611 { 612 int i; 613 614 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 615 struct ieee80211_txq *txq = sta->txq[i]; 616 struct mt76_queue *hwq; 617 struct mt76_txq *mtxq; 618 619 if (!txq) 620 continue; 621 622 hwq = phy->q_tx[mt76_txq_get_qid(txq)]; 623 mtxq = (struct mt76_txq *)txq->drv_priv; 624 625 spin_lock_bh(&hwq->lock); 626 mtxq->send_bar = mtxq->aggr && send_bar; 627 spin_unlock_bh(&hwq->lock); 628 } 629 } 630 EXPORT_SYMBOL_GPL(mt76_stop_tx_queues); 631 632 void mt76_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 633 { 634 struct mt76_phy *phy = hw->priv; 635 struct mt76_dev *dev = phy->dev; 636 637 if (!test_bit(MT76_STATE_RUNNING, &phy->state)) 638 return; 639 640 mt76_worker_schedule(&dev->tx_worker); 641 } 642 EXPORT_SYMBOL_GPL(mt76_wake_tx_queue); 643 644 u8 mt76_ac_to_hwq(u8 ac) 645 { 646 static const u8 wmm_queue_map[] = { 647 [IEEE80211_AC_BE] = 0, 648 [IEEE80211_AC_BK] = 1, 649 [IEEE80211_AC_VI] = 2, 650 [IEEE80211_AC_VO] = 3, 651 }; 652 653 if (WARN_ON(ac >= IEEE80211_NUM_ACS)) 654 return 0; 655 656 return wmm_queue_map[ac]; 657 } 658 EXPORT_SYMBOL_GPL(mt76_ac_to_hwq); 659 660 int mt76_skb_adjust_pad(struct sk_buff *skb, int pad) 661 { 662 struct sk_buff *iter, *last = skb; 663 664 /* First packet of a A-MSDU burst keeps track of the whole burst 665 * length, need to update length of it and the last packet. 666 */ 667 skb_walk_frags(skb, iter) { 668 last = iter; 669 if (!iter->next) { 670 skb->data_len += pad; 671 skb->len += pad; 672 break; 673 } 674 } 675 676 if (skb_pad(last, pad)) 677 return -ENOMEM; 678 679 __skb_put(last, pad); 680 681 return 0; 682 } 683 EXPORT_SYMBOL_GPL(mt76_skb_adjust_pad); 684 685 void mt76_queue_tx_complete(struct mt76_dev *dev, struct mt76_queue *q, 686 struct mt76_queue_entry *e) 687 { 688 if (e->skb) 689 dev->drv->tx_complete_skb(dev, e); 690 691 spin_lock_bh(&q->lock); 692 q->tail = (q->tail + 1) % q->ndesc; 693 q->queued--; 694 spin_unlock_bh(&q->lock); 695 } 696 EXPORT_SYMBOL_GPL(mt76_queue_tx_complete); 697 698 void __mt76_set_tx_blocked(struct mt76_dev *dev, bool blocked) 699 { 700 struct mt76_phy *phy = &dev->phy, *phy2 = dev->phy2; 701 struct mt76_queue *q, *q2 = NULL; 702 703 q = phy->q_tx[0]; 704 if (blocked == q->blocked) 705 return; 706 707 q->blocked = blocked; 708 if (phy2) { 709 q2 = phy2->q_tx[0]; 710 q2->blocked = blocked; 711 } 712 713 if (!blocked) 714 mt76_worker_schedule(&dev->tx_worker); 715 } 716 EXPORT_SYMBOL_GPL(__mt76_set_tx_blocked); 717 718 int mt76_token_consume(struct mt76_dev *dev, struct mt76_txwi_cache **ptxwi) 719 { 720 int token; 721 722 spin_lock_bh(&dev->token_lock); 723 724 token = idr_alloc(&dev->token, *ptxwi, 0, dev->token_size, GFP_ATOMIC); 725 if (token >= 0) 726 dev->token_count++; 727 728 #ifdef CONFIG_NET_MEDIATEK_SOC_WED 729 if (mtk_wed_device_active(&dev->mmio.wed) && 730 token >= dev->mmio.wed.wlan.token_start) 731 dev->wed_token_count++; 732 #endif 733 734 if (dev->token_count >= dev->token_size - MT76_TOKEN_FREE_THR) 735 __mt76_set_tx_blocked(dev, true); 736 737 spin_unlock_bh(&dev->token_lock); 738 739 return token; 740 } 741 EXPORT_SYMBOL_GPL(mt76_token_consume); 742 743 struct mt76_txwi_cache * 744 mt76_token_release(struct mt76_dev *dev, int token, bool *wake) 745 { 746 struct mt76_txwi_cache *txwi; 747 748 spin_lock_bh(&dev->token_lock); 749 750 txwi = idr_remove(&dev->token, token); 751 if (txwi) { 752 dev->token_count--; 753 754 #ifdef CONFIG_NET_MEDIATEK_SOC_WED 755 if (mtk_wed_device_active(&dev->mmio.wed) && 756 token >= dev->mmio.wed.wlan.token_start && 757 --dev->wed_token_count == 0) 758 wake_up(&dev->tx_wait); 759 #endif 760 } 761 762 if (dev->token_count < dev->token_size - MT76_TOKEN_FREE_THR && 763 dev->phy.q_tx[0]->blocked) 764 *wake = true; 765 766 spin_unlock_bh(&dev->token_lock); 767 768 return txwi; 769 } 770 EXPORT_SYMBOL_GPL(mt76_token_release); 771