1 // SPDX-License-Identifier: ISC
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
9 mt76_txq_get_qid(struct ieee80211_txq *txq)
18 mt76_tx_check_agg_ssn(struct ieee80211_sta *sta, struct sk_buff *skb)
20 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
21 struct ieee80211_txq *txq;
22 struct mt76_txq *mtxq;
25 if (!sta || !ieee80211_is_data_qos(hdr->frame_control) ||
26 !ieee80211_is_data_present(hdr->frame_control))
29 tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
31 mtxq = (struct mt76_txq *)txq->drv_priv;
35 mtxq->agg_ssn = le16_to_cpu(hdr->seq_ctrl) + 0x10;
37 EXPORT_SYMBOL_GPL(mt76_tx_check_agg_ssn);
40 mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
41 __acquires(&dev->status_list.lock)
43 __skb_queue_head_init(list);
44 spin_lock_bh(&dev->status_list.lock);
46 EXPORT_SYMBOL_GPL(mt76_tx_status_lock);
49 mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
50 __releases(&dev->status_list.lock)
52 struct ieee80211_hw *hw;
55 spin_unlock_bh(&dev->status_list.lock);
57 while ((skb = __skb_dequeue(list)) != NULL) {
58 hw = mt76_tx_status_get_hw(dev, skb);
59 ieee80211_tx_status(hw, skb);
63 EXPORT_SYMBOL_GPL(mt76_tx_status_unlock);
66 __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags,
67 struct sk_buff_head *list)
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;
76 if ((flags & done) != done)
79 __skb_unlink(skb, &dev->status_list);
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;
88 __skb_queue_tail(list, skb);
92 mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb,
93 struct sk_buff_head *list)
95 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_DONE, list);
97 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_done);
100 mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
103 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
104 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
108 return MT_PACKET_ID_NO_ACK;
110 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
111 return MT_PACKET_ID_NO_ACK;
113 if (!(info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
114 IEEE80211_TX_CTL_RATE_CTRL_PROBE)))
115 return MT_PACKET_ID_NO_SKB;
117 spin_lock_bh(&dev->status_list.lock);
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;
125 pid = wcid->packet_id;
126 cb->wcid = wcid->idx;
128 cb->jiffies = jiffies;
130 __skb_queue_tail(&dev->status_list, skb);
131 spin_unlock_bh(&dev->status_list.lock);
135 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_add);
138 mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid,
139 struct sk_buff_head *list)
141 struct sk_buff *skb, *tmp;
143 skb_queue_walk_safe(&dev->status_list, skb, tmp) {
144 struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
146 if (wcid && cb->wcid != wcid->idx)
149 if (cb->pktid == pktid)
152 if (pktid >= 0 && !time_after(jiffies, cb->jiffies +
153 MT_TX_STATUS_SKB_TIMEOUT))
156 __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_FAILED |
157 MT_TX_CB_TXS_DONE, list);
162 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_get);
165 mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid, bool flush)
167 struct sk_buff_head list;
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);
173 EXPORT_SYMBOL_GPL(mt76_tx_status_check);
176 mt76_tx_check_non_aql(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *skb)
178 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
179 struct mt76_wcid *wcid;
182 if (info->tx_time_est)
185 if (wcid_idx >= ARRAY_SIZE(dev->wcid))
190 wcid = rcu_dereference(dev->wcid[wcid_idx]);
192 pending = atomic_dec_return(&wcid->non_aql_packets);
194 atomic_cmpxchg(&wcid->non_aql_packets, pending, 0);
200 void mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *skb)
202 struct ieee80211_hw *hw;
203 struct sk_buff_head list;
205 #ifdef CONFIG_NL80211_TESTMODE
206 if (skb == dev->test.tx_skb) {
208 if (dev->test.tx_queued == dev->test.tx_done)
209 wake_up(&dev->tx_wait);
213 mt76_tx_check_non_aql(dev, wcid_idx, skb);
216 hw = mt76_tx_status_get_hw(dev, skb);
217 ieee80211_free_txskb(hw, skb);
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);
225 EXPORT_SYMBOL_GPL(mt76_tx_complete_skb);
228 __mt76_tx_queue_skb(struct mt76_phy *phy, int qid, struct sk_buff *skb,
229 struct mt76_wcid *wcid, struct ieee80211_sta *sta,
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;
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)
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)
254 mt76_tx(struct mt76_phy *phy, struct ieee80211_sta *sta,
255 struct mt76_wcid *wcid, struct sk_buff *skb)
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;
264 if (mt76_testmode_enabled(dev)) {
265 ieee80211_free_txskb(phy->hw, skb);
269 if (WARN_ON(qid >= MT_TXQ_PSD)) {
271 skb_set_queue_mapping(skb, qid);
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)) {
279 skb_set_queue_mapping(skb, qid);
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);
287 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
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);
296 EXPORT_SYMBOL_GPL(mt76_tx);
298 static struct sk_buff *
299 mt76_txq_dequeue(struct mt76_phy *phy, struct mt76_txq *mtxq)
301 struct ieee80211_txq *txq = mtxq_to_txq(mtxq);
302 struct ieee80211_tx_info *info;
303 bool ext_phy = phy != &phy->dev->phy;
306 skb = ieee80211_tx_dequeue(phy->hw, txq);
310 info = IEEE80211_SKB_CB(skb);
312 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
318 mt76_queue_ps_skb(struct mt76_phy *phy, struct ieee80211_sta *sta,
319 struct sk_buff *skb, bool last)
321 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
322 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
324 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
326 info->flags |= IEEE80211_TX_STATUS_EOSP |
327 IEEE80211_TX_CTL_REQ_TX_STATUS;
329 mt76_skb_set_moredata(skb, !last);
330 __mt76_tx_queue_skb(phy, MT_TXQ_PSD, skb, wcid, sta, NULL);
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,
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];
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;
355 skb = mt76_txq_dequeue(phy, mtxq);
361 mt76_queue_ps_skb(phy, sta, last_skb, false);
368 mt76_queue_ps_skb(phy, sta, last_skb, true);
369 dev->queue_ops->kick(dev, hwq);
371 ieee80211_sta_eosp(sta);
374 spin_unlock_bh(&hwq->lock);
376 EXPORT_SYMBOL_GPL(mt76_release_buffered_frames);
379 mt76_txq_stopped(struct mt76_queue *q)
381 return q->stopped || q->blocked ||
382 q->queued + MT_TXQ_FREE_THR >= q->ndesc;
386 mt76_txq_send_burst(struct mt76_phy *phy, struct mt76_queue *q,
387 struct mt76_txq *mtxq)
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;
399 if (test_bit(MT_WCID_FLAG_PS, &wcid->flags))
402 if (atomic_read(&wcid->non_aql_packets) >= MT_MAX_NON_AQL_PKT)
405 skb = mt76_txq_dequeue(phy, mtxq);
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);
414 idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop);
419 if (test_bit(MT76_STATE_PM, &phy->state) ||
420 test_bit(MT76_RESET, &phy->state))
423 if (stop || mt76_txq_stopped(q))
426 skb = mt76_txq_dequeue(phy, mtxq);
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);
435 idx = __mt76_tx_queue_skb(phy, qid, skb, wcid, txq->sta, &stop);
442 dev->queue_ops->kick(dev, q);
448 mt76_txq_schedule_list(struct mt76_phy *phy, enum mt76_txq_id qid)
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;
457 spin_lock_bh(&q->lock);
459 if (test_bit(MT76_STATE_PM, &phy->state) ||
460 test_bit(MT76_RESET, &phy->state)) {
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);
472 if (mt76_txq_stopped(q))
475 txq = ieee80211_next_txq(phy->hw, qid);
479 mtxq = (struct mt76_txq *)txq->drv_priv;
481 if (wcid && test_bit(MT_WCID_FLAG_PS, &wcid->flags))
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;
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);
497 ret += mt76_txq_send_burst(phy, q, mtxq);
498 ieee80211_return_txq(phy->hw, txq, false);
500 spin_unlock_bh(&q->lock);
505 void mt76_txq_schedule(struct mt76_phy *phy, enum mt76_txq_id qid)
507 struct mt76_queue *q;
518 ieee80211_txq_schedule_start(phy->hw, qid);
519 len = mt76_txq_schedule_list(phy, qid);
520 ieee80211_txq_schedule_end(phy->hw, qid);
525 EXPORT_SYMBOL_GPL(mt76_txq_schedule);
527 void mt76_txq_schedule_all(struct mt76_phy *phy)
531 for (i = 0; i <= MT_TXQ_BK; i++)
532 mt76_txq_schedule(phy, i);
534 EXPORT_SYMBOL_GPL(mt76_txq_schedule_all);
536 void mt76_tx_worker(struct mt76_worker *w)
538 struct mt76_dev *dev = container_of(w, struct mt76_dev, tx_worker);
540 mt76_txq_schedule_all(&dev->phy);
542 mt76_txq_schedule_all(dev->phy2);
544 #ifdef CONFIG_NL80211_TESTMODE
545 if (dev->test.tx_pending)
546 mt76_testmode_tx_pending(dev);
550 void mt76_stop_tx_queues(struct mt76_phy *phy, struct ieee80211_sta *sta,
555 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
556 struct ieee80211_txq *txq = sta->txq[i];
557 struct mt76_queue *hwq;
558 struct mt76_txq *mtxq;
563 hwq = phy->q_tx[mt76_txq_get_qid(txq)];
564 mtxq = (struct mt76_txq *)txq->drv_priv;
566 spin_lock_bh(&hwq->lock);
567 mtxq->send_bar = mtxq->aggr && send_bar;
568 spin_unlock_bh(&hwq->lock);
571 EXPORT_SYMBOL_GPL(mt76_stop_tx_queues);
573 void mt76_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
575 struct mt76_phy *phy = hw->priv;
576 struct mt76_dev *dev = phy->dev;
578 if (!test_bit(MT76_STATE_RUNNING, &phy->state))
581 mt76_worker_schedule(&dev->tx_worker);
583 EXPORT_SYMBOL_GPL(mt76_wake_tx_queue);
585 u8 mt76_ac_to_hwq(u8 ac)
587 static const u8 wmm_queue_map[] = {
588 [IEEE80211_AC_BE] = 0,
589 [IEEE80211_AC_BK] = 1,
590 [IEEE80211_AC_VI] = 2,
591 [IEEE80211_AC_VO] = 3,
594 if (WARN_ON(ac >= IEEE80211_NUM_ACS))
597 return wmm_queue_map[ac];
599 EXPORT_SYMBOL_GPL(mt76_ac_to_hwq);
601 int mt76_skb_adjust_pad(struct sk_buff *skb, int pad)
603 struct sk_buff *iter, *last = skb;
605 /* First packet of a A-MSDU burst keeps track of the whole burst
606 * length, need to update length of it and the last packet.
608 skb_walk_frags(skb, iter) {
611 skb->data_len += pad;
617 if (skb_pad(last, pad))
620 __skb_put(last, pad);
624 EXPORT_SYMBOL_GPL(mt76_skb_adjust_pad);
626 void mt76_queue_tx_complete(struct mt76_dev *dev, struct mt76_queue *q,
627 struct mt76_queue_entry *e)
630 dev->drv->tx_complete_skb(dev, e);
632 spin_lock_bh(&q->lock);
633 q->tail = (q->tail + 1) % q->ndesc;
635 spin_unlock_bh(&q->lock);
637 EXPORT_SYMBOL_GPL(mt76_queue_tx_complete);