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_dev *rtwdev, 36 struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb) 37 { 38 struct rtw_tx_desc *tx_desc = (struct rtw_tx_desc *)skb->data; 39 bool more_data = false; 40 41 if (pkt_info->qsel == TX_DESC_QSEL_HIGH) 42 more_data = true; 43 44 tx_desc->w0 = le32_encode_bits(pkt_info->tx_pkt_size, RTW_TX_DESC_W0_TXPKTSIZE) | 45 le32_encode_bits(pkt_info->offset, RTW_TX_DESC_W0_OFFSET) | 46 le32_encode_bits(pkt_info->bmc, RTW_TX_DESC_W0_BMC) | 47 le32_encode_bits(pkt_info->ls, RTW_TX_DESC_W0_LS) | 48 le32_encode_bits(pkt_info->dis_qselseq, RTW_TX_DESC_W0_DISQSELSEQ); 49 50 tx_desc->w1 = le32_encode_bits(pkt_info->mac_id, RTW_TX_DESC_W1_MACID) | 51 le32_encode_bits(pkt_info->qsel, RTW_TX_DESC_W1_QSEL) | 52 le32_encode_bits(pkt_info->rate_id, RTW_TX_DESC_W1_RATE_ID) | 53 le32_encode_bits(pkt_info->sec_type, RTW_TX_DESC_W1_SEC_TYPE) | 54 le32_encode_bits(pkt_info->pkt_offset, RTW_TX_DESC_W1_PKT_OFFSET) | 55 le32_encode_bits(more_data, RTW_TX_DESC_W1_MORE_DATA); 56 57 tx_desc->w2 = le32_encode_bits(pkt_info->ampdu_en, RTW_TX_DESC_W2_AGG_EN) | 58 le32_encode_bits(pkt_info->report, RTW_TX_DESC_W2_SPE_RPT) | 59 le32_encode_bits(pkt_info->ampdu_density, RTW_TX_DESC_W2_AMPDU_DEN) | 60 le32_encode_bits(pkt_info->bt_null, RTW_TX_DESC_W2_BT_NULL); 61 62 tx_desc->w3 = le32_encode_bits(pkt_info->hw_ssn_sel, RTW_TX_DESC_W3_HW_SSN_SEL) | 63 le32_encode_bits(pkt_info->use_rate, RTW_TX_DESC_W3_USE_RATE) | 64 le32_encode_bits(pkt_info->dis_rate_fallback, RTW_TX_DESC_W3_DISDATAFB) | 65 le32_encode_bits(pkt_info->rts, RTW_TX_DESC_W3_USE_RTS) | 66 le32_encode_bits(pkt_info->nav_use_hdr, RTW_TX_DESC_W3_NAVUSEHDR) | 67 le32_encode_bits(pkt_info->ampdu_factor, RTW_TX_DESC_W3_MAX_AGG_NUM); 68 69 tx_desc->w4 = le32_encode_bits(pkt_info->rate, RTW_TX_DESC_W4_DATARATE); 70 71 if (rtwdev->chip->old_datarate_fb_limit) 72 tx_desc->w4 |= le32_encode_bits(0x1f, RTW_TX_DESC_W4_DATARATE_FB_LIMIT); 73 74 tx_desc->w5 = le32_encode_bits(pkt_info->short_gi, RTW_TX_DESC_W5_DATA_SHORT) | 75 le32_encode_bits(pkt_info->bw, RTW_TX_DESC_W5_DATA_BW) | 76 le32_encode_bits(pkt_info->ldpc, RTW_TX_DESC_W5_DATA_LDPC) | 77 le32_encode_bits(pkt_info->stbc, RTW_TX_DESC_W5_DATA_STBC); 78 79 tx_desc->w6 = le32_encode_bits(pkt_info->sn, RTW_TX_DESC_W6_SW_DEFINE); 80 81 tx_desc->w8 = le32_encode_bits(pkt_info->en_hwseq, RTW_TX_DESC_W8_EN_HWSEQ); 82 83 tx_desc->w9 = le32_encode_bits(pkt_info->seq, RTW_TX_DESC_W9_SW_SEQ); 84 85 if (pkt_info->rts) { 86 tx_desc->w4 |= le32_encode_bits(DESC_RATE24M, RTW_TX_DESC_W4_RTSRATE); 87 tx_desc->w5 |= le32_encode_bits(1, RTW_TX_DESC_W5_DATA_RTS_SHORT); 88 } 89 90 if (pkt_info->tim_offset) 91 tx_desc->w9 |= le32_encode_bits(1, RTW_TX_DESC_W9_TIM_EN) | 92 le32_encode_bits(pkt_info->tim_offset, RTW_TX_DESC_W9_TIM_OFFSET); 93 } 94 EXPORT_SYMBOL(rtw_tx_fill_tx_desc); 95 96 static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta) 97 { 98 u8 exp = sta->deflink.ht_cap.ampdu_factor; 99 100 /* the least ampdu factor is 8K, and the value in the tx desc is the 101 * max aggregation num, which represents val * 2 packets can be 102 * aggregated in an AMPDU, so here we should use 8/2=4 as the base 103 */ 104 return (BIT(2) << exp) - 1; 105 } 106 107 static u8 get_tx_ampdu_density(struct ieee80211_sta *sta) 108 { 109 return sta->deflink.ht_cap.ampdu_density; 110 } 111 112 static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev, 113 struct ieee80211_sta *sta) 114 { 115 u8 rate; 116 117 if (rtwdev->hal.rf_type == RF_2T2R && sta->deflink.ht_cap.mcs.rx_mask[1] != 0) 118 rate = DESC_RATEMCS15; 119 else 120 rate = DESC_RATEMCS7; 121 122 return rate; 123 } 124 125 static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev, 126 struct ieee80211_sta *sta) 127 { 128 struct rtw_efuse *efuse = &rtwdev->efuse; 129 u8 rate; 130 u16 tx_mcs_map; 131 132 tx_mcs_map = le16_to_cpu(sta->deflink.vht_cap.vht_mcs.tx_mcs_map); 133 if (efuse->hw_cap.nss == 1) { 134 switch (tx_mcs_map & 0x3) { 135 case IEEE80211_VHT_MCS_SUPPORT_0_7: 136 rate = DESC_RATEVHT1SS_MCS7; 137 break; 138 case IEEE80211_VHT_MCS_SUPPORT_0_8: 139 rate = DESC_RATEVHT1SS_MCS8; 140 break; 141 default: 142 case IEEE80211_VHT_MCS_SUPPORT_0_9: 143 rate = DESC_RATEVHT1SS_MCS9; 144 break; 145 } 146 } else if (efuse->hw_cap.nss >= 2) { 147 switch ((tx_mcs_map & 0xc) >> 2) { 148 case IEEE80211_VHT_MCS_SUPPORT_0_7: 149 rate = DESC_RATEVHT2SS_MCS7; 150 break; 151 case IEEE80211_VHT_MCS_SUPPORT_0_8: 152 rate = DESC_RATEVHT2SS_MCS8; 153 break; 154 default: 155 case IEEE80211_VHT_MCS_SUPPORT_0_9: 156 rate = DESC_RATEVHT2SS_MCS9; 157 break; 158 } 159 } else { 160 rate = DESC_RATEVHT1SS_MCS9; 161 } 162 163 return rate; 164 } 165 166 static void rtw_tx_report_enable(struct rtw_dev *rtwdev, 167 struct rtw_tx_pkt_info *pkt_info) 168 { 169 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 170 171 /* [11:8], reserved, fills with zero 172 * [7:2], tx report sequence number 173 * [1:0], firmware use, fills with zero 174 */ 175 pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc; 176 pkt_info->report = true; 177 } 178 179 void rtw_tx_report_purge_timer(struct timer_list *t) 180 { 181 struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer); 182 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 183 unsigned long flags; 184 185 #if defined(__linux__) 186 if (skb_queue_len(&tx_report->queue) == 0) 187 return; 188 189 rtw_warn(rtwdev, "failed to get tx report from firmware\n"); 190 191 spin_lock_irqsave(&tx_report->q_lock, flags); 192 skb_queue_purge(&tx_report->queue); 193 spin_unlock_irqrestore(&tx_report->q_lock, flags); 194 #elif defined(__FreeBSD__) 195 uint32_t qlen; 196 197 spin_lock_irqsave(&tx_report->q_lock, flags); 198 qlen = skb_queue_len(&tx_report->queue); 199 if (qlen > 0) 200 skb_queue_purge(&tx_report->queue); 201 spin_unlock_irqrestore(&tx_report->q_lock, flags); 202 203 /* 204 * XXX while there could be a new enqueue in the queue 205 * simply not yet processed given the timer is updated without 206 * locks after enqueue in rtw_tx_report_enqueue(), the numbers 207 * seen can be in the 100s. We revert to rtw_dbg from 208 * Linux git 584dce175f0461d5d9d63952a1e7955678c91086 . 209 */ 210 rtw_dbg(rtwdev, RTW_DBG_TX, "failed to get tx report from firmware: " 211 "txreport qlen %u\n", qlen); 212 #endif 213 } 214 215 void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn) 216 { 217 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 218 unsigned long flags; 219 u8 *drv_data; 220 221 /* pass sn to tx report handler through driver data */ 222 drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data; 223 *drv_data = sn; 224 225 spin_lock_irqsave(&tx_report->q_lock, flags); 226 __skb_queue_tail(&tx_report->queue, skb); 227 spin_unlock_irqrestore(&tx_report->q_lock, flags); 228 229 mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT); 230 } 231 EXPORT_SYMBOL(rtw_tx_report_enqueue); 232 233 static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev, 234 struct sk_buff *skb, bool acked) 235 { 236 struct ieee80211_tx_info *info; 237 238 info = IEEE80211_SKB_CB(skb); 239 ieee80211_tx_info_clear_status(info); 240 if (acked) 241 info->flags |= IEEE80211_TX_STAT_ACK; 242 else 243 info->flags &= ~IEEE80211_TX_STAT_ACK; 244 245 ieee80211_tx_status_irqsafe(rtwdev->hw, skb); 246 } 247 248 void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src) 249 { 250 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 251 struct rtw_c2h_cmd *c2h; 252 struct sk_buff *cur, *tmp; 253 unsigned long flags; 254 u8 sn, st; 255 u8 *n; 256 257 c2h = get_c2h_from_skb(skb); 258 259 if (src == C2H_CCX_TX_RPT) { 260 sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload); 261 st = GET_CCX_REPORT_STATUS_V0(c2h->payload); 262 } else { 263 sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload); 264 st = GET_CCX_REPORT_STATUS_V1(c2h->payload); 265 } 266 267 spin_lock_irqsave(&tx_report->q_lock, flags); 268 skb_queue_walk_safe(&tx_report->queue, cur, tmp) { 269 n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data; 270 if (*n == sn) { 271 __skb_unlink(cur, &tx_report->queue); 272 rtw_tx_report_tx_status(rtwdev, cur, st == 0); 273 break; 274 } 275 } 276 spin_unlock_irqrestore(&tx_report->q_lock, flags); 277 } 278 279 static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb, 280 u8 lowest_rate, bool ignore_rate) 281 { 282 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 283 struct ieee80211_vif *vif = tx_info->control.vif; 284 bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags); 285 286 if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest) 287 return lowest_rate; 288 289 return __ffs(vif->bss_conf.basic_rates) + lowest_rate; 290 } 291 292 static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev, 293 struct rtw_tx_pkt_info *pkt_info, 294 struct sk_buff *skb, 295 bool ignore_rate) 296 { 297 if (rtwdev->hal.current_band_type == RTW_BAND_2G) { 298 pkt_info->rate_id = RTW_RATEID_B_20M; 299 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M, 300 ignore_rate); 301 } else { 302 pkt_info->rate_id = RTW_RATEID_G; 303 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M, 304 ignore_rate); 305 } 306 307 pkt_info->use_rate = true; 308 pkt_info->dis_rate_fallback = true; 309 } 310 311 static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev, 312 struct rtw_tx_pkt_info *pkt_info, 313 struct sk_buff *skb) 314 { 315 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 316 u8 sec_type = 0; 317 318 if (info && info->control.hw_key) { 319 struct ieee80211_key_conf *key = info->control.hw_key; 320 321 switch (key->cipher) { 322 case WLAN_CIPHER_SUITE_WEP40: 323 case WLAN_CIPHER_SUITE_WEP104: 324 case WLAN_CIPHER_SUITE_TKIP: 325 sec_type = 0x01; 326 break; 327 case WLAN_CIPHER_SUITE_CCMP: 328 sec_type = 0x03; 329 break; 330 default: 331 break; 332 } 333 } 334 335 pkt_info->sec_type = sec_type; 336 } 337 338 static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev, 339 struct rtw_tx_pkt_info *pkt_info, 340 struct ieee80211_sta *sta, 341 struct sk_buff *skb) 342 { 343 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false); 344 pkt_info->dis_qselseq = true; 345 pkt_info->en_hwseq = true; 346 pkt_info->hw_ssn_sel = 0; 347 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 348 } 349 350 static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev, 351 struct rtw_tx_pkt_info *pkt_info, 352 struct ieee80211_sta *sta, 353 struct sk_buff *skb) 354 { 355 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 356 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 357 struct ieee80211_hw *hw = rtwdev->hw; 358 struct rtw_dm_info *dm_info = &rtwdev->dm_info; 359 struct rtw_sta_info *si; 360 u8 fix_rate; 361 u16 seq; 362 u8 ampdu_factor = 0; 363 u8 ampdu_density = 0; 364 bool ampdu_en = false; 365 u8 rate = DESC_RATE6M; 366 u8 rate_id = 6; 367 u8 bw = RTW_CHANNEL_WIDTH_20; 368 bool stbc = false; 369 bool ldpc = false; 370 371 seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 372 373 /* for broadcast/multicast, use default values */ 374 if (!sta) 375 goto out; 376 377 if (info->flags & IEEE80211_TX_CTL_AMPDU) { 378 ampdu_en = true; 379 ampdu_factor = get_tx_ampdu_factor(sta); 380 ampdu_density = get_tx_ampdu_density(sta); 381 } 382 383 if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold) 384 pkt_info->rts = true; 385 386 if (sta->deflink.vht_cap.vht_supported) 387 rate = get_highest_vht_tx_rate(rtwdev, sta); 388 else if (sta->deflink.ht_cap.ht_supported) 389 rate = get_highest_ht_tx_rate(rtwdev, sta); 390 else if (sta->deflink.supp_rates[0] <= 0xf) 391 rate = DESC_RATE11M; 392 else 393 rate = DESC_RATE54M; 394 395 si = (struct rtw_sta_info *)sta->drv_priv; 396 397 bw = si->bw_mode; 398 rate_id = si->rate_id; 399 stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en; 400 ldpc = si->ldpc_en; 401 402 out: 403 pkt_info->seq = seq; 404 pkt_info->ampdu_factor = ampdu_factor; 405 pkt_info->ampdu_density = ampdu_density; 406 pkt_info->ampdu_en = ampdu_en; 407 pkt_info->rate = rate; 408 pkt_info->rate_id = rate_id; 409 pkt_info->bw = bw; 410 pkt_info->stbc = stbc; 411 pkt_info->ldpc = ldpc; 412 413 fix_rate = dm_info->fix_rate; 414 if (fix_rate < DESC_RATE_MAX) { 415 pkt_info->rate = fix_rate; 416 pkt_info->dis_rate_fallback = true; 417 pkt_info->use_rate = true; 418 } 419 } 420 421 void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev, 422 struct rtw_tx_pkt_info *pkt_info, 423 struct ieee80211_sta *sta, 424 struct sk_buff *skb) 425 { 426 const struct rtw_chip_info *chip = rtwdev->chip; 427 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 428 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 429 struct ieee80211_vif *vif = info->control.vif; 430 struct rtw_sta_info *si; 431 struct rtw_vif *rtwvif; 432 __le16 fc = hdr->frame_control; 433 bool bmc; 434 435 if (sta) { 436 si = (struct rtw_sta_info *)sta->drv_priv; 437 pkt_info->mac_id = si->mac_id; 438 } else if (vif) { 439 rtwvif = (struct rtw_vif *)vif->drv_priv; 440 pkt_info->mac_id = rtwvif->mac_id; 441 } 442 443 if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc)) 444 rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb); 445 else if (ieee80211_is_data(fc)) 446 rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb); 447 448 bmc = is_broadcast_ether_addr(hdr->addr1) || 449 is_multicast_ether_addr(hdr->addr1); 450 451 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) 452 rtw_tx_report_enable(rtwdev, pkt_info); 453 454 pkt_info->bmc = bmc; 455 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 456 pkt_info->tx_pkt_size = skb->len; 457 pkt_info->offset = chip->tx_pkt_desc_sz; 458 pkt_info->qsel = skb->priority; 459 pkt_info->ls = true; 460 461 /* maybe merge with tx status ? */ 462 rtw_tx_stats(rtwdev, vif, skb); 463 } 464 465 void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev, 466 struct rtw_tx_pkt_info *pkt_info, 467 struct sk_buff *skb, 468 enum rtw_rsvd_packet_type type) 469 { 470 const struct rtw_chip_info *chip = rtwdev->chip; 471 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 472 bool bmc; 473 474 /* A beacon or dummy reserved page packet indicates that it is the first 475 * reserved page, and the qsel of it will be set in each hci. 476 */ 477 if (type != RSVD_BEACON && type != RSVD_DUMMY) 478 pkt_info->qsel = TX_DESC_QSEL_MGMT; 479 480 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true); 481 482 bmc = is_broadcast_ether_addr(hdr->addr1) || 483 is_multicast_ether_addr(hdr->addr1); 484 pkt_info->bmc = bmc; 485 pkt_info->tx_pkt_size = skb->len; 486 pkt_info->offset = chip->tx_pkt_desc_sz; 487 pkt_info->ls = true; 488 if (type == RSVD_PS_POLL) { 489 pkt_info->nav_use_hdr = true; 490 } else { 491 pkt_info->dis_qselseq = true; 492 pkt_info->en_hwseq = true; 493 pkt_info->hw_ssn_sel = 0; 494 } 495 if (type == RSVD_QOS_NULL) 496 pkt_info->bt_null = true; 497 498 if (type == RSVD_BEACON) { 499 struct rtw_rsvd_page *rsvd_pkt; 500 int hdr_len; 501 502 rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list, 503 struct rtw_rsvd_page, 504 build_list); 505 if (rsvd_pkt && rsvd_pkt->tim_offset != 0) { 506 hdr_len = sizeof(struct ieee80211_hdr_3addr); 507 pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len; 508 } 509 } 510 511 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 512 513 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 514 } 515 516 struct sk_buff * 517 rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev, 518 struct rtw_tx_pkt_info *pkt_info, 519 u8 *buf, u32 size) 520 { 521 const struct rtw_chip_info *chip = rtwdev->chip; 522 struct sk_buff *skb; 523 u32 tx_pkt_desc_sz; 524 u32 length; 525 526 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 527 length = size + tx_pkt_desc_sz; 528 skb = dev_alloc_skb(length); 529 if (!skb) { 530 rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n"); 531 return NULL; 532 } 533 534 skb_reserve(skb, tx_pkt_desc_sz); 535 skb_put_data(skb, buf, size); 536 rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON); 537 538 return skb; 539 } 540 EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get); 541 542 struct sk_buff * 543 rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev, 544 struct rtw_tx_pkt_info *pkt_info, 545 u8 *buf, u32 size) 546 { 547 const struct rtw_chip_info *chip = rtwdev->chip; 548 struct sk_buff *skb; 549 u32 tx_pkt_desc_sz; 550 u32 length; 551 552 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 553 length = size + tx_pkt_desc_sz; 554 skb = dev_alloc_skb(length); 555 if (!skb) { 556 rtw_err(rtwdev, "failed to alloc write data h2c skb\n"); 557 return NULL; 558 } 559 560 skb_reserve(skb, tx_pkt_desc_sz); 561 skb_put_data(skb, buf, size); 562 pkt_info->tx_pkt_size = size; 563 564 return skb; 565 } 566 EXPORT_SYMBOL(rtw_tx_write_data_h2c_get); 567 568 void rtw_tx(struct rtw_dev *rtwdev, 569 struct ieee80211_tx_control *control, 570 struct sk_buff *skb) 571 { 572 struct rtw_tx_pkt_info pkt_info = {0}; 573 int ret; 574 575 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb); 576 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 577 if (ret) { 578 #if defined(__linux__) 579 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 580 #elif defined(__FreeBSD__) 581 rtw_err(rtwdev, "%s: failed to write TX skb to HCI: %d\n", __func__, ret); 582 #endif 583 goto out; 584 } 585 586 rtw_hci_tx_kick_off(rtwdev); 587 588 return; 589 590 out: 591 ieee80211_free_txskb(rtwdev->hw, skb); 592 } 593 594 static void rtw_txq_check_agg(struct rtw_dev *rtwdev, 595 struct rtw_txq *rtwtxq, 596 struct sk_buff *skb) 597 { 598 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 599 struct ieee80211_tx_info *info; 600 struct rtw_sta_info *si; 601 602 if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) { 603 info = IEEE80211_SKB_CB(skb); 604 info->flags |= IEEE80211_TX_CTL_AMPDU; 605 return; 606 } 607 608 if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) 609 return; 610 611 if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags)) 612 return; 613 614 if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE))) 615 return; 616 617 if (!txq->sta) 618 return; 619 620 si = (struct rtw_sta_info *)txq->sta->drv_priv; 621 set_bit(txq->tid, si->tid_ba); 622 623 ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work); 624 } 625 626 static int rtw_txq_push_skb(struct rtw_dev *rtwdev, 627 struct rtw_txq *rtwtxq, 628 struct sk_buff *skb) 629 { 630 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 631 struct rtw_tx_pkt_info pkt_info = {0}; 632 int ret; 633 634 rtw_txq_check_agg(rtwdev, rtwtxq, skb); 635 636 rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb); 637 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 638 if (ret) { 639 #if defined(__linux__) 640 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 641 #elif defined(__FreeBSD__) 642 rtw_err(rtwdev, "%s: failed to write TX skb to HCI: %d\n", __func__, ret); 643 #endif 644 return ret; 645 } 646 return 0; 647 } 648 649 static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev, 650 struct rtw_txq *rtwtxq) 651 { 652 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 653 struct sk_buff *skb; 654 655 skb = ieee80211_tx_dequeue(rtwdev->hw, txq); 656 if (!skb) 657 return NULL; 658 659 return skb; 660 } 661 662 static void rtw_txq_push(struct rtw_dev *rtwdev, 663 struct rtw_txq *rtwtxq, 664 unsigned long frames) 665 { 666 struct sk_buff *skb; 667 int ret; 668 int i; 669 670 rcu_read_lock(); 671 672 for (i = 0; i < frames; i++) { 673 skb = rtw_txq_dequeue(rtwdev, rtwtxq); 674 if (!skb) 675 break; 676 677 ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb); 678 if (ret) { 679 #if defined(__FreeBSD__) 680 dev_kfree_skb_any(skb); 681 rtw_err(rtwdev, "failed to push skb, ret %d\n", ret); 682 #else 683 rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret); 684 #endif 685 break; 686 } 687 } 688 689 rcu_read_unlock(); 690 } 691 692 void __rtw_tx_work(struct rtw_dev *rtwdev) 693 { 694 struct rtw_txq *rtwtxq, *tmp; 695 696 spin_lock_bh(&rtwdev->txq_lock); 697 698 list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) { 699 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 700 unsigned long frame_cnt; 701 702 ieee80211_txq_get_depth(txq, &frame_cnt, NULL); 703 rtw_txq_push(rtwdev, rtwtxq, frame_cnt); 704 705 list_del_init(&rtwtxq->list); 706 } 707 708 rtw_hci_tx_kick_off(rtwdev); 709 710 spin_unlock_bh(&rtwdev->txq_lock); 711 } 712 713 void rtw_tx_work(struct work_struct *w) 714 { 715 struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work); 716 717 __rtw_tx_work(rtwdev); 718 } 719 720 void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 721 { 722 struct rtw_txq *rtwtxq; 723 724 if (!txq) 725 return; 726 727 rtwtxq = (struct rtw_txq *)txq->drv_priv; 728 INIT_LIST_HEAD(&rtwtxq->list); 729 } 730 731 void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 732 { 733 struct rtw_txq *rtwtxq; 734 735 if (!txq) 736 return; 737 738 rtwtxq = (struct rtw_txq *)txq->drv_priv; 739 spin_lock_bh(&rtwdev->txq_lock); 740 if (!list_empty(&rtwtxq->list)) 741 list_del_init(&rtwtxq->list); 742 spin_unlock_bh(&rtwdev->txq_lock); 743 } 744 745 static const enum rtw_tx_queue_type ac_to_hwq[] = { 746 [IEEE80211_AC_VO] = RTW_TX_QUEUE_VO, 747 [IEEE80211_AC_VI] = RTW_TX_QUEUE_VI, 748 [IEEE80211_AC_BE] = RTW_TX_QUEUE_BE, 749 [IEEE80211_AC_BK] = RTW_TX_QUEUE_BK, 750 }; 751 752 #if defined(__linux__) 753 static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS); 754 #elif defined(__FreeBSD__) 755 rtw88_static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS); 756 #endif 757 758 enum rtw_tx_queue_type rtw_tx_ac_to_hwq(enum ieee80211_ac_numbers ac) 759 { 760 if (WARN_ON(unlikely(ac >= IEEE80211_NUM_ACS))) 761 return RTW_TX_QUEUE_BE; 762 763 return ac_to_hwq[ac]; 764 } 765 EXPORT_SYMBOL(rtw_tx_ac_to_hwq); 766 767 enum rtw_tx_queue_type rtw_tx_queue_mapping(struct sk_buff *skb) 768 { 769 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 770 __le16 fc = hdr->frame_control; 771 u8 q_mapping = skb_get_queue_mapping(skb); 772 enum rtw_tx_queue_type queue; 773 774 if (unlikely(ieee80211_is_beacon(fc))) 775 queue = RTW_TX_QUEUE_BCN; 776 else if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))) 777 queue = RTW_TX_QUEUE_MGMT; 778 else if (is_broadcast_ether_addr(hdr->addr1) || 779 is_multicast_ether_addr(hdr->addr1)) 780 queue = RTW_TX_QUEUE_HI0; 781 else if (WARN_ON_ONCE(q_mapping >= ARRAY_SIZE(ac_to_hwq))) 782 queue = ac_to_hwq[IEEE80211_AC_BE]; 783 else 784 queue = ac_to_hwq[q_mapping]; 785 786 return queue; 787 } 788 EXPORT_SYMBOL(rtw_tx_queue_mapping); 789