summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/realtek/rtw88/tx.c
blob: c02ac673be321dbb171234c2c6300185dfacbada (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019  Realtek Corporation
 */

#include "main.h"
#include "tx.h"
#include "fw.h"
#include "ps.h"
#include "debug.h"

static
void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
		  struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct rtw_vif *rtwvif;

	hdr = (struct ieee80211_hdr *)skb->data;

	if (!ieee80211_is_data(hdr->frame_control))
		return;

	if (!is_broadcast_ether_addr(hdr->addr1) &&
	    !is_multicast_ether_addr(hdr->addr1)) {
		rtwdev->stats.tx_unicast += skb->len;
		rtwdev->stats.tx_cnt++;
		if (vif) {
			rtwvif = (struct rtw_vif *)vif->drv_priv;
			rtwvif->stats.tx_unicast += skb->len;
			rtwvif->stats.tx_cnt++;
		}
	}
}

void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
{
	struct rtw_tx_desc *tx_desc = (struct rtw_tx_desc *)skb->data;
	bool more_data = false;

	if (pkt_info->qsel == TX_DESC_QSEL_HIGH)
		more_data = true;

	tx_desc->w0 = le32_encode_bits(pkt_info->tx_pkt_size, RTW_TX_DESC_W0_TXPKTSIZE) |
		      le32_encode_bits(pkt_info->offset, RTW_TX_DESC_W0_OFFSET) |
		      le32_encode_bits(pkt_info->bmc, RTW_TX_DESC_W0_BMC) |
		      le32_encode_bits(pkt_info->ls, RTW_TX_DESC_W0_LS) |
		      le32_encode_bits(pkt_info->dis_qselseq, RTW_TX_DESC_W0_DISQSELSEQ);

	tx_desc->w1 = le32_encode_bits(pkt_info->qsel, RTW_TX_DESC_W1_QSEL) |
		      le32_encode_bits(pkt_info->rate_id, RTW_TX_DESC_W1_RATE_ID) |
		      le32_encode_bits(pkt_info->sec_type, RTW_TX_DESC_W1_SEC_TYPE) |
		      le32_encode_bits(pkt_info->pkt_offset, RTW_TX_DESC_W1_PKT_OFFSET) |
		      le32_encode_bits(more_data, RTW_TX_DESC_W1_MORE_DATA);

	tx_desc->w2 = le32_encode_bits(pkt_info->ampdu_en, RTW_TX_DESC_W2_AGG_EN) |
		      le32_encode_bits(pkt_info->report, RTW_TX_DESC_W2_SPE_RPT) |
		      le32_encode_bits(pkt_info->ampdu_density, RTW_TX_DESC_W2_AMPDU_DEN) |
		      le32_encode_bits(pkt_info->bt_null, RTW_TX_DESC_W2_BT_NULL);

	tx_desc->w3 = le32_encode_bits(pkt_info->hw_ssn_sel, RTW_TX_DESC_W3_HW_SSN_SEL) |
		      le32_encode_bits(pkt_info->use_rate, RTW_TX_DESC_W3_USE_RATE) |
		      le32_encode_bits(pkt_info->dis_rate_fallback, RTW_TX_DESC_W3_DISDATAFB) |
		      le32_encode_bits(pkt_info->rts, RTW_TX_DESC_W3_USE_RTS) |
		      le32_encode_bits(pkt_info->nav_use_hdr, RTW_TX_DESC_W3_NAVUSEHDR) |
		      le32_encode_bits(pkt_info->ampdu_factor, RTW_TX_DESC_W3_MAX_AGG_NUM);

	tx_desc->w4 = le32_encode_bits(pkt_info->rate, RTW_TX_DESC_W4_DATARATE);

	tx_desc->w5 = le32_encode_bits(pkt_info->short_gi, RTW_TX_DESC_W5_DATA_SHORT) |
		      le32_encode_bits(pkt_info->bw, RTW_TX_DESC_W5_DATA_BW) |
		      le32_encode_bits(pkt_info->ldpc, RTW_TX_DESC_W5_DATA_LDPC) |
		      le32_encode_bits(pkt_info->stbc, RTW_TX_DESC_W5_DATA_STBC);

	tx_desc->w6 = le32_encode_bits(pkt_info->sn, RTW_TX_DESC_W6_SW_DEFINE);

	tx_desc->w8 = le32_encode_bits(pkt_info->en_hwseq, RTW_TX_DESC_W8_EN_HWSEQ);

	tx_desc->w9 = le32_encode_bits(pkt_info->seq, RTW_TX_DESC_W9_SW_SEQ);

	if (pkt_info->rts) {
		tx_desc->w4 |= le32_encode_bits(DESC_RATE24M, RTW_TX_DESC_W4_RTSRATE);
		tx_desc->w5 |= le32_encode_bits(1, RTW_TX_DESC_W5_DATA_RTS_SHORT);
	}

	if (pkt_info->tim_offset)
		tx_desc->w9 |= le32_encode_bits(1, RTW_TX_DESC_W9_TIM_EN) |
			       le32_encode_bits(pkt_info->tim_offset, RTW_TX_DESC_W9_TIM_OFFSET);
}
EXPORT_SYMBOL(rtw_tx_fill_tx_desc);

static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta)
{
	u8 exp = sta->deflink.ht_cap.ampdu_factor;

	/* the least ampdu factor is 8K, and the value in the tx desc is the
	 * max aggregation num, which represents val * 2 packets can be
	 * aggregated in an AMPDU, so here we should use 8/2=4 as the base
	 */
	return (BIT(2) << exp) - 1;
}

static u8 get_tx_ampdu_density(struct ieee80211_sta *sta)
{
	return sta->deflink.ht_cap.ampdu_density;
}

static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev,
				 struct ieee80211_sta *sta)
{
	u8 rate;

	if (rtwdev->hal.rf_type == RF_2T2R && sta->deflink.ht_cap.mcs.rx_mask[1] != 0)
		rate = DESC_RATEMCS15;
	else
		rate = DESC_RATEMCS7;

	return rate;
}

static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev,
				  struct ieee80211_sta *sta)
{
	struct rtw_efuse *efuse = &rtwdev->efuse;
	u8 rate;
	u16 tx_mcs_map;

	tx_mcs_map = le16_to_cpu(sta->deflink.vht_cap.vht_mcs.tx_mcs_map);
	if (efuse->hw_cap.nss == 1) {
		switch (tx_mcs_map & 0x3) {
		case IEEE80211_VHT_MCS_SUPPORT_0_7:
			rate = DESC_RATEVHT1SS_MCS7;
			break;
		case IEEE80211_VHT_MCS_SUPPORT_0_8:
			rate = DESC_RATEVHT1SS_MCS8;
			break;
		default:
		case IEEE80211_VHT_MCS_SUPPORT_0_9:
			rate = DESC_RATEVHT1SS_MCS9;
			break;
		}
	} else if (efuse->hw_cap.nss >= 2) {
		switch ((tx_mcs_map & 0xc) >> 2) {
		case IEEE80211_VHT_MCS_SUPPORT_0_7:
			rate = DESC_RATEVHT2SS_MCS7;
			break;
		case IEEE80211_VHT_MCS_SUPPORT_0_8:
			rate = DESC_RATEVHT2SS_MCS8;
			break;
		default:
		case IEEE80211_VHT_MCS_SUPPORT_0_9:
			rate = DESC_RATEVHT2SS_MCS9;
			break;
		}
	} else {
		rate = DESC_RATEVHT1SS_MCS9;
	}

	return rate;
}

static void rtw_tx_report_enable(struct rtw_dev *rtwdev,
				 struct rtw_tx_pkt_info *pkt_info)
{
	struct rtw_tx_report *tx_report = &rtwdev->tx_report;

	/* [11:8], reserved, fills with zero
	 * [7:2],  tx report sequence number
	 * [1:0],  firmware use, fills with zero
	 */
	pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc;
	pkt_info->report = true;
}

void rtw_tx_report_purge_timer(struct timer_list *t)
{
	struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer);
	struct rtw_tx_report *tx_report = &rtwdev->tx_report;
	unsigned long flags;

	if (skb_queue_len(&tx_report->queue) == 0)
		return;

	rtw_warn(rtwdev, "failed to get tx report from firmware\n");

	spin_lock_irqsave(&tx_report->q_lock, flags);
	skb_queue_purge(&tx_report->queue);
	spin_unlock_irqrestore(&tx_report->q_lock, flags);
}

void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn)
{
	struct rtw_tx_report *tx_report = &rtwdev->tx_report;
	unsigned long flags;
	u8 *drv_data;

	/* pass sn to tx report handler through driver data */
	drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data;
	*drv_data = sn;

	spin_lock_irqsave(&tx_report->q_lock, flags);
	__skb_queue_tail(&tx_report->queue, skb);
	spin_unlock_irqrestore(&tx_report->q_lock, flags);

	mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT);
}
EXPORT_SYMBOL(rtw_tx_report_enqueue);

static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev,
				    struct sk_buff *skb, bool acked)
{
	struct ieee80211_tx_info *info;

	info = IEEE80211_SKB_CB(skb);
	ieee80211_tx_info_clear_status(info);
	if (acked)
		info->flags |= IEEE80211_TX_STAT_ACK;
	else
		info->flags &= ~IEEE80211_TX_STAT_ACK;

	ieee80211_tx_status_irqsafe(rtwdev->hw, skb);
}

void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src)
{
	struct rtw_tx_report *tx_report = &rtwdev->tx_report;
	struct rtw_c2h_cmd *c2h;
	struct sk_buff *cur, *tmp;
	unsigned long flags;
	u8 sn, st;
	u8 *n;

	c2h = get_c2h_from_skb(skb);

	if (src == C2H_CCX_TX_RPT) {
		sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload);
		st = GET_CCX_REPORT_STATUS_V0(c2h->payload);
	} else {
		sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload);
		st = GET_CCX_REPORT_STATUS_V1(c2h->payload);
	}

	spin_lock_irqsave(&tx_report->q_lock, flags);
	skb_queue_walk_safe(&tx_report->queue, cur, tmp) {
		n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data;
		if (*n == sn) {
			__skb_unlink(cur, &tx_report->queue);
			rtw_tx_report_tx_status(rtwdev, cur, st == 0);
			break;
		}
	}
	spin_unlock_irqrestore(&tx_report->q_lock, flags);
}

static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb,
			    u8 lowest_rate, bool ignore_rate)
{
	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = tx_info->control.vif;
	bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags);

	if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest)
		return lowest_rate;

	return __ffs(vif->bss_conf.basic_rates) + lowest_rate;
}

static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev,
					struct rtw_tx_pkt_info *pkt_info,
					struct sk_buff *skb,
					bool ignore_rate)
{
	if (rtwdev->hal.current_band_type == RTW_BAND_2G) {
		pkt_info->rate_id = RTW_RATEID_B_20M;
		pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M,
						   ignore_rate);
	} else {
		pkt_info->rate_id = RTW_RATEID_G;
		pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M,
						   ignore_rate);
	}

	pkt_info->use_rate = true;
	pkt_info->dis_rate_fallback = true;
}

static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev,
				       struct rtw_tx_pkt_info *pkt_info,
				       struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	u8 sec_type = 0;

	if (info && info->control.hw_key) {
		struct ieee80211_key_conf *key = info->control.hw_key;

		switch (key->cipher) {
		case WLAN_CIPHER_SUITE_WEP40:
		case WLAN_CIPHER_SUITE_WEP104:
		case WLAN_CIPHER_SUITE_TKIP:
			sec_type = 0x01;
			break;
		case WLAN_CIPHER_SUITE_CCMP:
			sec_type = 0x03;
			break;
		default:
			break;
		}
	}

	pkt_info->sec_type = sec_type;
}

static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev,
					struct rtw_tx_pkt_info *pkt_info,
					struct ieee80211_sta *sta,
					struct sk_buff *skb)
{
	rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false);
	pkt_info->dis_qselseq = true;
	pkt_info->en_hwseq = true;
	pkt_info->hw_ssn_sel = 0;
	/* TODO: need to change hw port and hw ssn sel for multiple vifs */
}

static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev,
					struct rtw_tx_pkt_info *pkt_info,
					struct ieee80211_sta *sta,
					struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hw *hw = rtwdev->hw;
	struct rtw_dm_info *dm_info = &rtwdev->dm_info;
	struct rtw_sta_info *si;
	u8 fix_rate;
	u16 seq;
	u8 ampdu_factor = 0;
	u8 ampdu_density = 0;
	bool ampdu_en = false;
	u8 rate = DESC_RATE6M;
	u8 rate_id = 6;
	u8 bw = RTW_CHANNEL_WIDTH_20;
	bool stbc = false;
	bool ldpc = false;

	seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;

	/* for broadcast/multicast, use default values */
	if (!sta)
		goto out;

	if (info->flags & IEEE80211_TX_CTL_AMPDU) {
		ampdu_en = true;
		ampdu_factor = get_tx_ampdu_factor(sta);
		ampdu_density = get_tx_ampdu_density(sta);
	}

	if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold)
		pkt_info->rts = true;

	if (sta->deflink.vht_cap.vht_supported)
		rate = get_highest_vht_tx_rate(rtwdev, sta);
	else if (sta->deflink.ht_cap.ht_supported)
		rate = get_highest_ht_tx_rate(rtwdev, sta);
	else if (sta->deflink.supp_rates[0] <= 0xf)
		rate = DESC_RATE11M;
	else
		rate = DESC_RATE54M;

	si = (struct rtw_sta_info *)sta->drv_priv;

	bw = si->bw_mode;
	rate_id = si->rate_id;
	stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en;
	ldpc = si->ldpc_en;

out:
	pkt_info->seq = seq;
	pkt_info->ampdu_factor = ampdu_factor;
	pkt_info->ampdu_density = ampdu_density;
	pkt_info->ampdu_en = ampdu_en;
	pkt_info->rate = rate;
	pkt_info->rate_id = rate_id;
	pkt_info->bw = bw;
	pkt_info->stbc = stbc;
	pkt_info->ldpc = ldpc;

	fix_rate = dm_info->fix_rate;
	if (fix_rate < DESC_RATE_MAX) {
		pkt_info->rate = fix_rate;
		pkt_info->dis_rate_fallback = true;
		pkt_info->use_rate = true;
	}
}

void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev,
			    struct rtw_tx_pkt_info *pkt_info,
			    struct ieee80211_sta *sta,
			    struct sk_buff *skb)
{
	const struct rtw_chip_info *chip = rtwdev->chip;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct rtw_sta_info *si;
	struct ieee80211_vif *vif = NULL;
	__le16 fc = hdr->frame_control;
	bool bmc;

	if (sta) {
		si = (struct rtw_sta_info *)sta->drv_priv;
		vif = si->vif;
	}

	if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc))
		rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb);
	else if (ieee80211_is_data(fc))
		rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb);

	bmc = is_broadcast_ether_addr(hdr->addr1) ||
	      is_multicast_ether_addr(hdr->addr1);

	if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
		rtw_tx_report_enable(rtwdev, pkt_info);

	pkt_info->bmc = bmc;
	rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);
	pkt_info->tx_pkt_size = skb->len;
	pkt_info->offset = chip->tx_pkt_desc_sz;
	pkt_info->qsel = skb->priority;
	pkt_info->ls = true;

	/* maybe merge with tx status ? */
	rtw_tx_stats(rtwdev, vif, skb);
}

void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev,
				      struct rtw_tx_pkt_info *pkt_info,
				      struct sk_buff *skb,
				      enum rtw_rsvd_packet_type type)
{
	const struct rtw_chip_info *chip = rtwdev->chip;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	bool bmc;

	/* A beacon or dummy reserved page packet indicates that it is the first
	 * reserved page, and the qsel of it will be set in each hci.
	 */
	if (type != RSVD_BEACON && type != RSVD_DUMMY)
		pkt_info->qsel = TX_DESC_QSEL_MGMT;

	rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true);

	bmc = is_broadcast_ether_addr(hdr->addr1) ||
	      is_multicast_ether_addr(hdr->addr1);
	pkt_info->bmc = bmc;
	pkt_info->tx_pkt_size = skb->len;
	pkt_info->offset = chip->tx_pkt_desc_sz;
	pkt_info->ls = true;
	if (type == RSVD_PS_POLL) {
		pkt_info->nav_use_hdr = true;
	} else {
		pkt_info->dis_qselseq = true;
		pkt_info->en_hwseq = true;
		pkt_info->hw_ssn_sel = 0;
	}
	if (type == RSVD_QOS_NULL)
		pkt_info->bt_null = true;

	if (type == RSVD_BEACON) {
		struct rtw_rsvd_page *rsvd_pkt;
		int hdr_len;

		rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list,
						    struct rtw_rsvd_page,
						    build_list);
		if (rsvd_pkt && rsvd_pkt->tim_offset != 0) {
			hdr_len = sizeof(struct ieee80211_hdr_3addr);
			pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len;
		}
	}

	rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);

	/* TODO: need to change hw port and hw ssn sel for multiple vifs */
}

struct sk_buff *
rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev,
				struct rtw_tx_pkt_info *pkt_info,
				u8 *buf, u32 size)
{
	const struct rtw_chip_info *chip = rtwdev->chip;
	struct sk_buff *skb;
	u32 tx_pkt_desc_sz;
	u32 length;

	tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
	length = size + tx_pkt_desc_sz;
	skb = dev_alloc_skb(length);
	if (!skb) {
		rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n");
		return NULL;
	}

	skb_reserve(skb, tx_pkt_desc_sz);
	skb_put_data(skb, buf, size);
	rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON);

	return skb;
}
EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get);

struct sk_buff *
rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev,
			  struct rtw_tx_pkt_info *pkt_info,
			  u8 *buf, u32 size)
{
	const struct rtw_chip_info *chip = rtwdev->chip;
	struct sk_buff *skb;
	u32 tx_pkt_desc_sz;
	u32 length;

	tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
	length = size + tx_pkt_desc_sz;
	skb = dev_alloc_skb(length);
	if (!skb) {
		rtw_err(rtwdev, "failed to alloc write data h2c skb\n");
		return NULL;
	}

	skb_reserve(skb, tx_pkt_desc_sz);
	skb_put_data(skb, buf, size);
	pkt_info->tx_pkt_size = size;

	return skb;
}
EXPORT_SYMBOL(rtw_tx_write_data_h2c_get);

void rtw_tx(struct rtw_dev *rtwdev,
	    struct ieee80211_tx_control *control,
	    struct sk_buff *skb)
{
	struct rtw_tx_pkt_info pkt_info = {0};
	int ret;

	rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb);
	ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
	if (ret) {
		rtw_err(rtwdev, "failed to write TX skb to HCI\n");
		goto out;
	}

	rtw_hci_tx_kick_off(rtwdev);

	return;

out:
	ieee80211_free_txskb(rtwdev->hw, skb);
}

static void rtw_txq_check_agg(struct rtw_dev *rtwdev,
			      struct rtw_txq *rtwtxq,
			      struct sk_buff *skb)
{
	struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
	struct ieee80211_tx_info *info;
	struct rtw_sta_info *si;

	if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) {
		info = IEEE80211_SKB_CB(skb);
		info->flags |= IEEE80211_TX_CTL_AMPDU;
		return;
	}

	if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
		return;

	if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags))
		return;

	if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
		return;

	if (!txq->sta)
		return;

	si = (struct rtw_sta_info *)txq->sta->drv_priv;
	set_bit(txq->tid, si->tid_ba);

	ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work);
}

static int rtw_txq_push_skb(struct rtw_dev *rtwdev,
			    struct rtw_txq *rtwtxq,
			    struct sk_buff *skb)
{
	struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
	struct rtw_tx_pkt_info pkt_info = {0};
	int ret;

	rtw_txq_check_agg(rtwdev, rtwtxq, skb);

	rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb);
	ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
	if (ret) {
		rtw_err(rtwdev, "failed to write TX skb to HCI\n");
		return ret;
	}
	return 0;
}

static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev,
				       struct rtw_txq *rtwtxq)
{
	struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
	struct sk_buff *skb;

	skb = ieee80211_tx_dequeue(rtwdev->hw, txq);
	if (!skb)
		return NULL;

	return skb;
}

static void rtw_txq_push(struct rtw_dev *rtwdev,
			 struct rtw_txq *rtwtxq,
			 unsigned long frames)
{
	struct sk_buff *skb;
	int ret;
	int i;

	rcu_read_lock();

	for (i = 0; i < frames; i++) {
		skb = rtw_txq_dequeue(rtwdev, rtwtxq);
		if (!skb)
			break;

		ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb);
		if (ret) {
			rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret);
			break;
		}
	}

	rcu_read_unlock();
}

void __rtw_tx_work(struct rtw_dev *rtwdev)
{
	struct rtw_txq *rtwtxq, *tmp;

	spin_lock_bh(&rtwdev->txq_lock);

	list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) {
		struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
		unsigned long frame_cnt;

		ieee80211_txq_get_depth(txq, &frame_cnt, NULL);
		rtw_txq_push(rtwdev, rtwtxq, frame_cnt);

		list_del_init(&rtwtxq->list);
	}

	rtw_hci_tx_kick_off(rtwdev);

	spin_unlock_bh(&rtwdev->txq_lock);
}

void rtw_tx_work(struct work_struct *w)
{
	struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work);

	__rtw_tx_work(rtwdev);
}

void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
{
	struct rtw_txq *rtwtxq;

	if (!txq)
		return;

	rtwtxq = (struct rtw_txq *)txq->drv_priv;
	INIT_LIST_HEAD(&rtwtxq->list);
}

void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
{
	struct rtw_txq *rtwtxq;

	if (!txq)
		return;

	rtwtxq = (struct rtw_txq *)txq->drv_priv;
	spin_lock_bh(&rtwdev->txq_lock);
	if (!list_empty(&rtwtxq->list))
		list_del_init(&rtwtxq->list);
	spin_unlock_bh(&rtwdev->txq_lock);
}

static const enum rtw_tx_queue_type ac_to_hwq[] = {
	[IEEE80211_AC_VO] = RTW_TX_QUEUE_VO,
	[IEEE80211_AC_VI] = RTW_TX_QUEUE_VI,
	[IEEE80211_AC_BE] = RTW_TX_QUEUE_BE,
	[IEEE80211_AC_BK] = RTW_TX_QUEUE_BK,
};

static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS);

enum rtw_tx_queue_type rtw_tx_ac_to_hwq(enum ieee80211_ac_numbers ac)
{
	if (WARN_ON(unlikely(ac >= IEEE80211_NUM_ACS)))
		return RTW_TX_QUEUE_BE;

	return ac_to_hwq[ac];
}
EXPORT_SYMBOL(rtw_tx_ac_to_hwq);

enum rtw_tx_queue_type rtw_tx_queue_mapping(struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	__le16 fc = hdr->frame_control;
	u8 q_mapping = skb_get_queue_mapping(skb);
	enum rtw_tx_queue_type queue;

	if (unlikely(ieee80211_is_beacon(fc)))
		queue = RTW_TX_QUEUE_BCN;
	else if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)))
		queue = RTW_TX_QUEUE_MGMT;
	else if (is_broadcast_ether_addr(hdr->addr1) ||
		 is_multicast_ether_addr(hdr->addr1))
		queue = RTW_TX_QUEUE_HI0;
	else if (WARN_ON_ONCE(q_mapping >= ARRAY_SIZE(ac_to_hwq)))
		queue = ac_to_hwq[IEEE80211_AC_BE];
	else
		queue = ac_to_hwq[q_mapping];

	return queue;
}
EXPORT_SYMBOL(rtw_tx_queue_mapping);