1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2018-2019 Realtek Corporation 3 */ 4 5 #include "main.h" 6 #include "tx.h" 7 #include "fw.h" 8 #include "ps.h" 9 #include "debug.h" 10 11 static 12 void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, 13 struct sk_buff *skb) 14 { 15 struct ieee80211_hdr *hdr; 16 struct rtw_vif *rtwvif; 17 18 hdr = (struct ieee80211_hdr *)skb->data; 19 20 if (!ieee80211_is_data(hdr->frame_control)) 21 return; 22 23 if (!is_broadcast_ether_addr(hdr->addr1) && 24 !is_multicast_ether_addr(hdr->addr1)) { 25 rtwdev->stats.tx_unicast += skb->len; 26 rtwdev->stats.tx_cnt++; 27 if (vif) { 28 rtwvif = (struct rtw_vif *)vif->drv_priv; 29 rtwvif->stats.tx_unicast += skb->len; 30 rtwvif->stats.tx_cnt++; 31 } 32 } 33 } 34 35 void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb) 36 { 37 __le32 *txdesc = (__le32 *)skb->data; 38 39 SET_TX_DESC_TXPKTSIZE(txdesc, pkt_info->tx_pkt_size); 40 SET_TX_DESC_OFFSET(txdesc, pkt_info->offset); 41 SET_TX_DESC_PKT_OFFSET(txdesc, pkt_info->pkt_offset); 42 SET_TX_DESC_QSEL(txdesc, pkt_info->qsel); 43 SET_TX_DESC_BMC(txdesc, pkt_info->bmc); 44 SET_TX_DESC_RATE_ID(txdesc, pkt_info->rate_id); 45 SET_TX_DESC_DATARATE(txdesc, pkt_info->rate); 46 SET_TX_DESC_DISDATAFB(txdesc, pkt_info->dis_rate_fallback); 47 SET_TX_DESC_USE_RATE(txdesc, pkt_info->use_rate); 48 SET_TX_DESC_SEC_TYPE(txdesc, pkt_info->sec_type); 49 SET_TX_DESC_DATA_BW(txdesc, pkt_info->bw); 50 SET_TX_DESC_SW_SEQ(txdesc, pkt_info->seq); 51 SET_TX_DESC_MAX_AGG_NUM(txdesc, pkt_info->ampdu_factor); 52 SET_TX_DESC_AMPDU_DENSITY(txdesc, pkt_info->ampdu_density); 53 SET_TX_DESC_DATA_STBC(txdesc, pkt_info->stbc); 54 SET_TX_DESC_DATA_LDPC(txdesc, pkt_info->ldpc); 55 SET_TX_DESC_AGG_EN(txdesc, pkt_info->ampdu_en); 56 SET_TX_DESC_LS(txdesc, pkt_info->ls); 57 SET_TX_DESC_DATA_SHORT(txdesc, pkt_info->short_gi); 58 SET_TX_DESC_SPE_RPT(txdesc, pkt_info->report); 59 SET_TX_DESC_SW_DEFINE(txdesc, pkt_info->sn); 60 SET_TX_DESC_USE_RTS(txdesc, pkt_info->rts); 61 if (pkt_info->rts) { 62 SET_TX_DESC_RTSRATE(txdesc, DESC_RATE24M); 63 SET_TX_DESC_DATA_RTS_SHORT(txdesc, 1); 64 } 65 SET_TX_DESC_DISQSELSEQ(txdesc, pkt_info->dis_qselseq); 66 SET_TX_DESC_EN_HWSEQ(txdesc, pkt_info->en_hwseq); 67 SET_TX_DESC_HW_SSN_SEL(txdesc, pkt_info->hw_ssn_sel); 68 SET_TX_DESC_NAVUSEHDR(txdesc, pkt_info->nav_use_hdr); 69 SET_TX_DESC_BT_NULL(txdesc, pkt_info->bt_null); 70 if (pkt_info->tim_offset) { 71 SET_TX_DESC_TIM_EN(txdesc, 1); 72 SET_TX_DESC_TIM_OFFSET(txdesc, pkt_info->tim_offset); 73 } 74 } 75 EXPORT_SYMBOL(rtw_tx_fill_tx_desc); 76 77 static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta) 78 { 79 u8 exp = sta->deflink.ht_cap.ampdu_factor; 80 81 /* the least ampdu factor is 8K, and the value in the tx desc is the 82 * max aggregation num, which represents val * 2 packets can be 83 * aggregated in an AMPDU, so here we should use 8/2=4 as the base 84 */ 85 return (BIT(2) << exp) - 1; 86 } 87 88 static u8 get_tx_ampdu_density(struct ieee80211_sta *sta) 89 { 90 return sta->deflink.ht_cap.ampdu_density; 91 } 92 93 static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev, 94 struct ieee80211_sta *sta) 95 { 96 u8 rate; 97 98 if (rtwdev->hal.rf_type == RF_2T2R && sta->deflink.ht_cap.mcs.rx_mask[1] != 0) 99 rate = DESC_RATEMCS15; 100 else 101 rate = DESC_RATEMCS7; 102 103 return rate; 104 } 105 106 static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev, 107 struct ieee80211_sta *sta) 108 { 109 struct rtw_efuse *efuse = &rtwdev->efuse; 110 u8 rate; 111 u16 tx_mcs_map; 112 113 tx_mcs_map = le16_to_cpu(sta->deflink.vht_cap.vht_mcs.tx_mcs_map); 114 if (efuse->hw_cap.nss == 1) { 115 switch (tx_mcs_map & 0x3) { 116 case IEEE80211_VHT_MCS_SUPPORT_0_7: 117 rate = DESC_RATEVHT1SS_MCS7; 118 break; 119 case IEEE80211_VHT_MCS_SUPPORT_0_8: 120 rate = DESC_RATEVHT1SS_MCS8; 121 break; 122 default: 123 case IEEE80211_VHT_MCS_SUPPORT_0_9: 124 rate = DESC_RATEVHT1SS_MCS9; 125 break; 126 } 127 } else if (efuse->hw_cap.nss >= 2) { 128 switch ((tx_mcs_map & 0xc) >> 2) { 129 case IEEE80211_VHT_MCS_SUPPORT_0_7: 130 rate = DESC_RATEVHT2SS_MCS7; 131 break; 132 case IEEE80211_VHT_MCS_SUPPORT_0_8: 133 rate = DESC_RATEVHT2SS_MCS8; 134 break; 135 default: 136 case IEEE80211_VHT_MCS_SUPPORT_0_9: 137 rate = DESC_RATEVHT2SS_MCS9; 138 break; 139 } 140 } else { 141 rate = DESC_RATEVHT1SS_MCS9; 142 } 143 144 return rate; 145 } 146 147 static void rtw_tx_report_enable(struct rtw_dev *rtwdev, 148 struct rtw_tx_pkt_info *pkt_info) 149 { 150 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 151 152 /* [11:8], reserved, fills with zero 153 * [7:2], tx report sequence number 154 * [1:0], firmware use, fills with zero 155 */ 156 pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc; 157 pkt_info->report = true; 158 } 159 160 void rtw_tx_report_purge_timer(struct timer_list *t) 161 { 162 struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer); 163 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 164 unsigned long flags; 165 166 if (skb_queue_len(&tx_report->queue) == 0) 167 return; 168 169 rtw_warn(rtwdev, "failed to get tx report from firmware\n"); 170 171 spin_lock_irqsave(&tx_report->q_lock, flags); 172 skb_queue_purge(&tx_report->queue); 173 spin_unlock_irqrestore(&tx_report->q_lock, flags); 174 } 175 176 void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn) 177 { 178 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 179 unsigned long flags; 180 u8 *drv_data; 181 182 /* pass sn to tx report handler through driver data */ 183 drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data; 184 *drv_data = sn; 185 186 spin_lock_irqsave(&tx_report->q_lock, flags); 187 __skb_queue_tail(&tx_report->queue, skb); 188 spin_unlock_irqrestore(&tx_report->q_lock, flags); 189 190 mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT); 191 } 192 EXPORT_SYMBOL(rtw_tx_report_enqueue); 193 194 static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev, 195 struct sk_buff *skb, bool acked) 196 { 197 struct ieee80211_tx_info *info; 198 199 info = IEEE80211_SKB_CB(skb); 200 ieee80211_tx_info_clear_status(info); 201 if (acked) 202 info->flags |= IEEE80211_TX_STAT_ACK; 203 else 204 info->flags &= ~IEEE80211_TX_STAT_ACK; 205 206 ieee80211_tx_status_irqsafe(rtwdev->hw, skb); 207 } 208 209 void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src) 210 { 211 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 212 struct rtw_c2h_cmd *c2h; 213 struct sk_buff *cur, *tmp; 214 unsigned long flags; 215 u8 sn, st; 216 u8 *n; 217 218 c2h = get_c2h_from_skb(skb); 219 220 if (src == C2H_CCX_TX_RPT) { 221 sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload); 222 st = GET_CCX_REPORT_STATUS_V0(c2h->payload); 223 } else { 224 sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload); 225 st = GET_CCX_REPORT_STATUS_V1(c2h->payload); 226 } 227 228 spin_lock_irqsave(&tx_report->q_lock, flags); 229 skb_queue_walk_safe(&tx_report->queue, cur, tmp) { 230 n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data; 231 if (*n == sn) { 232 __skb_unlink(cur, &tx_report->queue); 233 rtw_tx_report_tx_status(rtwdev, cur, st == 0); 234 break; 235 } 236 } 237 spin_unlock_irqrestore(&tx_report->q_lock, flags); 238 } 239 240 static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb, 241 u8 lowest_rate, bool ignore_rate) 242 { 243 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 244 struct ieee80211_vif *vif = tx_info->control.vif; 245 bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags); 246 247 if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest) 248 return lowest_rate; 249 250 return __ffs(vif->bss_conf.basic_rates) + lowest_rate; 251 } 252 253 static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev, 254 struct rtw_tx_pkt_info *pkt_info, 255 struct sk_buff *skb, 256 bool ignore_rate) 257 { 258 if (rtwdev->hal.current_band_type == RTW_BAND_2G) { 259 pkt_info->rate_id = RTW_RATEID_B_20M; 260 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M, 261 ignore_rate); 262 } else { 263 pkt_info->rate_id = RTW_RATEID_G; 264 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M, 265 ignore_rate); 266 } 267 268 pkt_info->use_rate = true; 269 pkt_info->dis_rate_fallback = true; 270 } 271 272 static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev, 273 struct rtw_tx_pkt_info *pkt_info, 274 struct sk_buff *skb) 275 { 276 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 277 u8 sec_type = 0; 278 279 if (info && info->control.hw_key) { 280 struct ieee80211_key_conf *key = info->control.hw_key; 281 282 switch (key->cipher) { 283 case WLAN_CIPHER_SUITE_WEP40: 284 case WLAN_CIPHER_SUITE_WEP104: 285 case WLAN_CIPHER_SUITE_TKIP: 286 sec_type = 0x01; 287 break; 288 case WLAN_CIPHER_SUITE_CCMP: 289 sec_type = 0x03; 290 break; 291 default: 292 break; 293 } 294 } 295 296 pkt_info->sec_type = sec_type; 297 } 298 299 static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev, 300 struct rtw_tx_pkt_info *pkt_info, 301 struct ieee80211_sta *sta, 302 struct sk_buff *skb) 303 { 304 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false); 305 pkt_info->dis_qselseq = true; 306 pkt_info->en_hwseq = true; 307 pkt_info->hw_ssn_sel = 0; 308 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 309 } 310 311 static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev, 312 struct rtw_tx_pkt_info *pkt_info, 313 struct ieee80211_sta *sta, 314 struct sk_buff *skb) 315 { 316 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 317 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 318 struct ieee80211_hw *hw = rtwdev->hw; 319 struct rtw_dm_info *dm_info = &rtwdev->dm_info; 320 struct rtw_sta_info *si; 321 u8 fix_rate; 322 u16 seq; 323 u8 ampdu_factor = 0; 324 u8 ampdu_density = 0; 325 bool ampdu_en = false; 326 u8 rate = DESC_RATE6M; 327 u8 rate_id = 6; 328 u8 bw = RTW_CHANNEL_WIDTH_20; 329 bool stbc = false; 330 bool ldpc = false; 331 332 seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 333 334 /* for broadcast/multicast, use default values */ 335 if (!sta) 336 goto out; 337 338 if (info->flags & IEEE80211_TX_CTL_AMPDU) { 339 ampdu_en = true; 340 ampdu_factor = get_tx_ampdu_factor(sta); 341 ampdu_density = get_tx_ampdu_density(sta); 342 } 343 344 if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold) 345 pkt_info->rts = true; 346 347 if (sta->deflink.vht_cap.vht_supported) 348 rate = get_highest_vht_tx_rate(rtwdev, sta); 349 else if (sta->deflink.ht_cap.ht_supported) 350 rate = get_highest_ht_tx_rate(rtwdev, sta); 351 else if (sta->deflink.supp_rates[0] <= 0xf) 352 rate = DESC_RATE11M; 353 else 354 rate = DESC_RATE54M; 355 356 si = (struct rtw_sta_info *)sta->drv_priv; 357 358 bw = si->bw_mode; 359 rate_id = si->rate_id; 360 stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en; 361 ldpc = si->ldpc_en; 362 363 out: 364 pkt_info->seq = seq; 365 pkt_info->ampdu_factor = ampdu_factor; 366 pkt_info->ampdu_density = ampdu_density; 367 pkt_info->ampdu_en = ampdu_en; 368 pkt_info->rate = rate; 369 pkt_info->rate_id = rate_id; 370 pkt_info->bw = bw; 371 pkt_info->stbc = stbc; 372 pkt_info->ldpc = ldpc; 373 374 fix_rate = dm_info->fix_rate; 375 if (fix_rate < DESC_RATE_MAX) { 376 pkt_info->rate = fix_rate; 377 pkt_info->dis_rate_fallback = true; 378 pkt_info->use_rate = true; 379 } 380 } 381 382 void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev, 383 struct rtw_tx_pkt_info *pkt_info, 384 struct ieee80211_sta *sta, 385 struct sk_buff *skb) 386 { 387 struct rtw_chip_info *chip = rtwdev->chip; 388 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 389 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 390 struct rtw_sta_info *si; 391 struct ieee80211_vif *vif = NULL; 392 __le16 fc = hdr->frame_control; 393 bool bmc; 394 395 if (sta) { 396 si = (struct rtw_sta_info *)sta->drv_priv; 397 vif = si->vif; 398 } 399 400 if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc)) 401 rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb); 402 else if (ieee80211_is_data(fc)) 403 rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb); 404 405 bmc = is_broadcast_ether_addr(hdr->addr1) || 406 is_multicast_ether_addr(hdr->addr1); 407 408 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) 409 rtw_tx_report_enable(rtwdev, pkt_info); 410 411 pkt_info->bmc = bmc; 412 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 413 pkt_info->tx_pkt_size = skb->len; 414 pkt_info->offset = chip->tx_pkt_desc_sz; 415 pkt_info->qsel = skb->priority; 416 pkt_info->ls = true; 417 418 /* maybe merge with tx status ? */ 419 rtw_tx_stats(rtwdev, vif, skb); 420 } 421 422 void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev, 423 struct rtw_tx_pkt_info *pkt_info, 424 struct sk_buff *skb, 425 enum rtw_rsvd_packet_type type) 426 { 427 struct rtw_chip_info *chip = rtwdev->chip; 428 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 429 bool bmc; 430 431 /* A beacon or dummy reserved page packet indicates that it is the first 432 * reserved page, and the qsel of it will be set in each hci. 433 */ 434 if (type != RSVD_BEACON && type != RSVD_DUMMY) 435 pkt_info->qsel = TX_DESC_QSEL_MGMT; 436 437 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true); 438 439 bmc = is_broadcast_ether_addr(hdr->addr1) || 440 is_multicast_ether_addr(hdr->addr1); 441 pkt_info->bmc = bmc; 442 pkt_info->tx_pkt_size = skb->len; 443 pkt_info->offset = chip->tx_pkt_desc_sz; 444 pkt_info->ls = true; 445 if (type == RSVD_PS_POLL) { 446 pkt_info->nav_use_hdr = true; 447 } else { 448 pkt_info->dis_qselseq = true; 449 pkt_info->en_hwseq = true; 450 pkt_info->hw_ssn_sel = 0; 451 } 452 if (type == RSVD_QOS_NULL) 453 pkt_info->bt_null = true; 454 455 if (type == RSVD_BEACON) { 456 struct rtw_rsvd_page *rsvd_pkt; 457 int hdr_len; 458 459 rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list, 460 struct rtw_rsvd_page, 461 build_list); 462 if (rsvd_pkt && rsvd_pkt->tim_offset != 0) { 463 hdr_len = sizeof(struct ieee80211_hdr_3addr); 464 pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len; 465 } 466 } 467 468 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 469 470 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 471 } 472 473 struct sk_buff * 474 rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev, 475 struct rtw_tx_pkt_info *pkt_info, 476 u8 *buf, u32 size) 477 { 478 struct rtw_chip_info *chip = rtwdev->chip; 479 struct sk_buff *skb; 480 u32 tx_pkt_desc_sz; 481 u32 length; 482 483 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 484 length = size + tx_pkt_desc_sz; 485 skb = dev_alloc_skb(length); 486 if (!skb) { 487 rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n"); 488 return NULL; 489 } 490 491 skb_reserve(skb, tx_pkt_desc_sz); 492 skb_put_data(skb, buf, size); 493 rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON); 494 495 return skb; 496 } 497 EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get); 498 499 struct sk_buff * 500 rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev, 501 struct rtw_tx_pkt_info *pkt_info, 502 u8 *buf, u32 size) 503 { 504 struct rtw_chip_info *chip = rtwdev->chip; 505 struct sk_buff *skb; 506 u32 tx_pkt_desc_sz; 507 u32 length; 508 509 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 510 length = size + tx_pkt_desc_sz; 511 skb = dev_alloc_skb(length); 512 if (!skb) { 513 rtw_err(rtwdev, "failed to alloc write data h2c skb\n"); 514 return NULL; 515 } 516 517 skb_reserve(skb, tx_pkt_desc_sz); 518 skb_put_data(skb, buf, size); 519 pkt_info->tx_pkt_size = size; 520 521 return skb; 522 } 523 EXPORT_SYMBOL(rtw_tx_write_data_h2c_get); 524 525 void rtw_tx(struct rtw_dev *rtwdev, 526 struct ieee80211_tx_control *control, 527 struct sk_buff *skb) 528 { 529 struct rtw_tx_pkt_info pkt_info = {0}; 530 int ret; 531 532 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb); 533 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 534 if (ret) { 535 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 536 goto out; 537 } 538 539 rtw_hci_tx_kick_off(rtwdev); 540 541 return; 542 543 out: 544 ieee80211_free_txskb(rtwdev->hw, skb); 545 } 546 547 static void rtw_txq_check_agg(struct rtw_dev *rtwdev, 548 struct rtw_txq *rtwtxq, 549 struct sk_buff *skb) 550 { 551 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 552 struct ieee80211_tx_info *info; 553 struct rtw_sta_info *si; 554 555 if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) { 556 info = IEEE80211_SKB_CB(skb); 557 info->flags |= IEEE80211_TX_CTL_AMPDU; 558 return; 559 } 560 561 if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) 562 return; 563 564 if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags)) 565 return; 566 567 if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE))) 568 return; 569 570 if (!txq->sta) 571 return; 572 573 si = (struct rtw_sta_info *)txq->sta->drv_priv; 574 set_bit(txq->tid, si->tid_ba); 575 576 ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work); 577 } 578 579 static int rtw_txq_push_skb(struct rtw_dev *rtwdev, 580 struct rtw_txq *rtwtxq, 581 struct sk_buff *skb) 582 { 583 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 584 struct rtw_tx_pkt_info pkt_info = {0}; 585 int ret; 586 587 rtw_txq_check_agg(rtwdev, rtwtxq, skb); 588 589 rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb); 590 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 591 if (ret) { 592 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 593 return ret; 594 } 595 rtwtxq->last_push = jiffies; 596 597 return 0; 598 } 599 600 static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev, 601 struct rtw_txq *rtwtxq) 602 { 603 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 604 struct sk_buff *skb; 605 606 skb = ieee80211_tx_dequeue(rtwdev->hw, txq); 607 if (!skb) 608 return NULL; 609 610 return skb; 611 } 612 613 static void rtw_txq_push(struct rtw_dev *rtwdev, 614 struct rtw_txq *rtwtxq, 615 unsigned long frames) 616 { 617 struct sk_buff *skb; 618 int ret; 619 int i; 620 621 rcu_read_lock(); 622 623 for (i = 0; i < frames; i++) { 624 skb = rtw_txq_dequeue(rtwdev, rtwtxq); 625 if (!skb) 626 break; 627 628 ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb); 629 if (ret) { 630 rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret); 631 break; 632 } 633 } 634 635 rcu_read_unlock(); 636 } 637 638 void rtw_tx_work(struct work_struct *w) 639 { 640 struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work); 641 struct rtw_txq *rtwtxq, *tmp; 642 643 spin_lock_bh(&rtwdev->txq_lock); 644 645 list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) { 646 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 647 unsigned long frame_cnt; 648 unsigned long byte_cnt; 649 650 ieee80211_txq_get_depth(txq, &frame_cnt, &byte_cnt); 651 rtw_txq_push(rtwdev, rtwtxq, frame_cnt); 652 653 list_del_init(&rtwtxq->list); 654 } 655 656 rtw_hci_tx_kick_off(rtwdev); 657 658 spin_unlock_bh(&rtwdev->txq_lock); 659 } 660 661 void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 662 { 663 struct rtw_txq *rtwtxq; 664 665 if (!txq) 666 return; 667 668 rtwtxq = (struct rtw_txq *)txq->drv_priv; 669 INIT_LIST_HEAD(&rtwtxq->list); 670 } 671 672 void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 673 { 674 struct rtw_txq *rtwtxq; 675 676 if (!txq) 677 return; 678 679 rtwtxq = (struct rtw_txq *)txq->drv_priv; 680 spin_lock_bh(&rtwdev->txq_lock); 681 if (!list_empty(&rtwtxq->list)) 682 list_del_init(&rtwtxq->list); 683 spin_unlock_bh(&rtwdev->txq_lock); 684 } 685