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 (skb_queue_len(&tx_report->queue) == 0) 186 return; 187 188 rtw_warn(rtwdev, "failed to get tx report from firmware\n"); 189 190 spin_lock_irqsave(&tx_report->q_lock, flags); 191 skb_queue_purge(&tx_report->queue); 192 spin_unlock_irqrestore(&tx_report->q_lock, flags); 193 } 194 195 void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn) 196 { 197 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 198 unsigned long flags; 199 u8 *drv_data; 200 201 /* pass sn to tx report handler through driver data */ 202 drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data; 203 *drv_data = sn; 204 205 spin_lock_irqsave(&tx_report->q_lock, flags); 206 __skb_queue_tail(&tx_report->queue, skb); 207 spin_unlock_irqrestore(&tx_report->q_lock, flags); 208 209 mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT); 210 } 211 EXPORT_SYMBOL(rtw_tx_report_enqueue); 212 213 static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev, 214 struct sk_buff *skb, bool acked) 215 { 216 struct ieee80211_tx_info *info; 217 218 info = IEEE80211_SKB_CB(skb); 219 ieee80211_tx_info_clear_status(info); 220 if (acked) 221 info->flags |= IEEE80211_TX_STAT_ACK; 222 else 223 info->flags &= ~IEEE80211_TX_STAT_ACK; 224 225 ieee80211_tx_status_irqsafe(rtwdev->hw, skb); 226 } 227 228 void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src) 229 { 230 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 231 struct rtw_c2h_cmd *c2h; 232 struct sk_buff *cur, *tmp; 233 unsigned long flags; 234 u8 sn, st; 235 u8 *n; 236 237 c2h = get_c2h_from_skb(skb); 238 239 if (src == C2H_CCX_TX_RPT) { 240 sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload); 241 st = GET_CCX_REPORT_STATUS_V0(c2h->payload); 242 } else { 243 sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload); 244 st = GET_CCX_REPORT_STATUS_V1(c2h->payload); 245 } 246 247 spin_lock_irqsave(&tx_report->q_lock, flags); 248 skb_queue_walk_safe(&tx_report->queue, cur, tmp) { 249 n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data; 250 if (*n == sn) { 251 __skb_unlink(cur, &tx_report->queue); 252 rtw_tx_report_tx_status(rtwdev, cur, st == 0); 253 break; 254 } 255 } 256 spin_unlock_irqrestore(&tx_report->q_lock, flags); 257 } 258 259 static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb, 260 u8 lowest_rate, bool ignore_rate) 261 { 262 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 263 struct ieee80211_vif *vif = tx_info->control.vif; 264 bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags); 265 266 if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest) 267 return lowest_rate; 268 269 return __ffs(vif->bss_conf.basic_rates) + lowest_rate; 270 } 271 272 static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev, 273 struct rtw_tx_pkt_info *pkt_info, 274 struct sk_buff *skb, 275 bool ignore_rate) 276 { 277 if (rtwdev->hal.current_band_type == RTW_BAND_2G) { 278 pkt_info->rate_id = RTW_RATEID_B_20M; 279 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M, 280 ignore_rate); 281 } else { 282 pkt_info->rate_id = RTW_RATEID_G; 283 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M, 284 ignore_rate); 285 } 286 287 pkt_info->use_rate = true; 288 pkt_info->dis_rate_fallback = true; 289 } 290 291 static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev, 292 struct rtw_tx_pkt_info *pkt_info, 293 struct sk_buff *skb) 294 { 295 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 296 u8 sec_type = 0; 297 298 if (info && info->control.hw_key) { 299 struct ieee80211_key_conf *key = info->control.hw_key; 300 301 switch (key->cipher) { 302 case WLAN_CIPHER_SUITE_WEP40: 303 case WLAN_CIPHER_SUITE_WEP104: 304 case WLAN_CIPHER_SUITE_TKIP: 305 sec_type = 0x01; 306 break; 307 case WLAN_CIPHER_SUITE_CCMP: 308 sec_type = 0x03; 309 break; 310 default: 311 break; 312 } 313 } 314 315 pkt_info->sec_type = sec_type; 316 } 317 318 static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev, 319 struct rtw_tx_pkt_info *pkt_info, 320 struct ieee80211_sta *sta, 321 struct sk_buff *skb) 322 { 323 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false); 324 pkt_info->dis_qselseq = true; 325 pkt_info->en_hwseq = true; 326 pkt_info->hw_ssn_sel = 0; 327 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 328 } 329 330 static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev, 331 struct rtw_tx_pkt_info *pkt_info, 332 struct ieee80211_sta *sta, 333 struct sk_buff *skb) 334 { 335 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 336 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 337 struct ieee80211_hw *hw = rtwdev->hw; 338 struct rtw_dm_info *dm_info = &rtwdev->dm_info; 339 struct rtw_sta_info *si; 340 u8 fix_rate; 341 u16 seq; 342 u8 ampdu_factor = 0; 343 u8 ampdu_density = 0; 344 bool ampdu_en = false; 345 u8 rate = DESC_RATE6M; 346 u8 rate_id = 6; 347 u8 bw = RTW_CHANNEL_WIDTH_20; 348 bool stbc = false; 349 bool ldpc = false; 350 351 seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 352 353 /* for broadcast/multicast, use default values */ 354 if (!sta) 355 goto out; 356 357 if (info->flags & IEEE80211_TX_CTL_AMPDU) { 358 ampdu_en = true; 359 ampdu_factor = get_tx_ampdu_factor(sta); 360 ampdu_density = get_tx_ampdu_density(sta); 361 } 362 363 if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold) 364 pkt_info->rts = true; 365 366 if (sta->deflink.vht_cap.vht_supported) 367 rate = get_highest_vht_tx_rate(rtwdev, sta); 368 else if (sta->deflink.ht_cap.ht_supported) 369 rate = get_highest_ht_tx_rate(rtwdev, sta); 370 else if (sta->deflink.supp_rates[0] <= 0xf) 371 rate = DESC_RATE11M; 372 else 373 rate = DESC_RATE54M; 374 375 si = (struct rtw_sta_info *)sta->drv_priv; 376 377 bw = si->bw_mode; 378 rate_id = si->rate_id; 379 stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en; 380 ldpc = si->ldpc_en; 381 382 out: 383 pkt_info->seq = seq; 384 pkt_info->ampdu_factor = ampdu_factor; 385 pkt_info->ampdu_density = ampdu_density; 386 pkt_info->ampdu_en = ampdu_en; 387 pkt_info->rate = rate; 388 pkt_info->rate_id = rate_id; 389 pkt_info->bw = bw; 390 pkt_info->stbc = stbc; 391 pkt_info->ldpc = ldpc; 392 393 fix_rate = dm_info->fix_rate; 394 if (fix_rate < DESC_RATE_MAX) { 395 pkt_info->rate = fix_rate; 396 pkt_info->dis_rate_fallback = true; 397 pkt_info->use_rate = true; 398 } 399 } 400 401 void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev, 402 struct rtw_tx_pkt_info *pkt_info, 403 struct ieee80211_sta *sta, 404 struct sk_buff *skb) 405 { 406 const struct rtw_chip_info *chip = rtwdev->chip; 407 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 408 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 409 struct ieee80211_vif *vif = info->control.vif; 410 struct rtw_sta_info *si; 411 struct rtw_vif *rtwvif; 412 __le16 fc = hdr->frame_control; 413 bool bmc; 414 415 if (sta) { 416 si = (struct rtw_sta_info *)sta->drv_priv; 417 pkt_info->mac_id = si->mac_id; 418 } else if (vif) { 419 rtwvif = (struct rtw_vif *)vif->drv_priv; 420 pkt_info->mac_id = rtwvif->mac_id; 421 } 422 423 if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc)) 424 rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb); 425 else if (ieee80211_is_data(fc)) 426 rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb); 427 428 bmc = is_broadcast_ether_addr(hdr->addr1) || 429 is_multicast_ether_addr(hdr->addr1); 430 431 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) 432 rtw_tx_report_enable(rtwdev, pkt_info); 433 434 pkt_info->bmc = bmc; 435 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 436 pkt_info->tx_pkt_size = skb->len; 437 pkt_info->offset = chip->tx_pkt_desc_sz; 438 pkt_info->qsel = skb->priority; 439 pkt_info->ls = true; 440 441 /* maybe merge with tx status ? */ 442 rtw_tx_stats(rtwdev, vif, skb); 443 } 444 445 void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev, 446 struct rtw_tx_pkt_info *pkt_info, 447 struct sk_buff *skb, 448 enum rtw_rsvd_packet_type type) 449 { 450 const struct rtw_chip_info *chip = rtwdev->chip; 451 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 452 bool bmc; 453 454 /* A beacon or dummy reserved page packet indicates that it is the first 455 * reserved page, and the qsel of it will be set in each hci. 456 */ 457 if (type != RSVD_BEACON && type != RSVD_DUMMY) 458 pkt_info->qsel = TX_DESC_QSEL_MGMT; 459 460 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true); 461 462 bmc = is_broadcast_ether_addr(hdr->addr1) || 463 is_multicast_ether_addr(hdr->addr1); 464 pkt_info->bmc = bmc; 465 pkt_info->tx_pkt_size = skb->len; 466 pkt_info->offset = chip->tx_pkt_desc_sz; 467 pkt_info->ls = true; 468 if (type == RSVD_PS_POLL) { 469 pkt_info->nav_use_hdr = true; 470 } else { 471 pkt_info->dis_qselseq = true; 472 pkt_info->en_hwseq = true; 473 pkt_info->hw_ssn_sel = 0; 474 } 475 if (type == RSVD_QOS_NULL) 476 pkt_info->bt_null = true; 477 478 if (type == RSVD_BEACON) { 479 struct rtw_rsvd_page *rsvd_pkt; 480 int hdr_len; 481 482 rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list, 483 struct rtw_rsvd_page, 484 build_list); 485 if (rsvd_pkt && rsvd_pkt->tim_offset != 0) { 486 hdr_len = sizeof(struct ieee80211_hdr_3addr); 487 pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len; 488 } 489 } 490 491 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 492 493 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 494 } 495 496 struct sk_buff * 497 rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev, 498 struct rtw_tx_pkt_info *pkt_info, 499 u8 *buf, u32 size) 500 { 501 const struct rtw_chip_info *chip = rtwdev->chip; 502 struct sk_buff *skb; 503 u32 tx_pkt_desc_sz; 504 u32 length; 505 506 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 507 length = size + tx_pkt_desc_sz; 508 skb = dev_alloc_skb(length); 509 if (!skb) { 510 rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n"); 511 return NULL; 512 } 513 514 skb_reserve(skb, tx_pkt_desc_sz); 515 skb_put_data(skb, buf, size); 516 rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON); 517 518 return skb; 519 } 520 EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get); 521 522 struct sk_buff * 523 rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev, 524 struct rtw_tx_pkt_info *pkt_info, 525 u8 *buf, u32 size) 526 { 527 const struct rtw_chip_info *chip = rtwdev->chip; 528 struct sk_buff *skb; 529 u32 tx_pkt_desc_sz; 530 u32 length; 531 532 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 533 length = size + tx_pkt_desc_sz; 534 skb = dev_alloc_skb(length); 535 if (!skb) { 536 rtw_err(rtwdev, "failed to alloc write data h2c skb\n"); 537 return NULL; 538 } 539 540 skb_reserve(skb, tx_pkt_desc_sz); 541 skb_put_data(skb, buf, size); 542 pkt_info->tx_pkt_size = size; 543 544 return skb; 545 } 546 EXPORT_SYMBOL(rtw_tx_write_data_h2c_get); 547 548 void rtw_tx(struct rtw_dev *rtwdev, 549 struct ieee80211_tx_control *control, 550 struct sk_buff *skb) 551 { 552 struct rtw_tx_pkt_info pkt_info = {0}; 553 int ret; 554 555 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb); 556 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 557 if (ret) { 558 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 559 goto out; 560 } 561 562 rtw_hci_tx_kick_off(rtwdev); 563 564 return; 565 566 out: 567 ieee80211_free_txskb(rtwdev->hw, skb); 568 } 569 570 static void rtw_txq_check_agg(struct rtw_dev *rtwdev, 571 struct rtw_txq *rtwtxq, 572 struct sk_buff *skb) 573 { 574 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 575 struct ieee80211_tx_info *info; 576 struct rtw_sta_info *si; 577 578 if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) { 579 info = IEEE80211_SKB_CB(skb); 580 info->flags |= IEEE80211_TX_CTL_AMPDU; 581 return; 582 } 583 584 if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) 585 return; 586 587 if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags)) 588 return; 589 590 if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE))) 591 return; 592 593 if (!txq->sta) 594 return; 595 596 si = (struct rtw_sta_info *)txq->sta->drv_priv; 597 set_bit(txq->tid, si->tid_ba); 598 599 ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work); 600 } 601 602 static int rtw_txq_push_skb(struct rtw_dev *rtwdev, 603 struct rtw_txq *rtwtxq, 604 struct sk_buff *skb) 605 { 606 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 607 struct rtw_tx_pkt_info pkt_info = {0}; 608 int ret; 609 610 rtw_txq_check_agg(rtwdev, rtwtxq, skb); 611 612 rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb); 613 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 614 if (ret) { 615 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 616 return ret; 617 } 618 return 0; 619 } 620 621 static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev, 622 struct rtw_txq *rtwtxq) 623 { 624 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 625 struct sk_buff *skb; 626 627 skb = ieee80211_tx_dequeue(rtwdev->hw, txq); 628 if (!skb) 629 return NULL; 630 631 return skb; 632 } 633 634 static void rtw_txq_push(struct rtw_dev *rtwdev, 635 struct rtw_txq *rtwtxq, 636 unsigned long frames) 637 { 638 struct sk_buff *skb; 639 int ret; 640 int i; 641 642 rcu_read_lock(); 643 644 for (i = 0; i < frames; i++) { 645 skb = rtw_txq_dequeue(rtwdev, rtwtxq); 646 if (!skb) 647 break; 648 649 ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb); 650 if (ret) { 651 rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret); 652 break; 653 } 654 } 655 656 rcu_read_unlock(); 657 } 658 659 void __rtw_tx_work(struct rtw_dev *rtwdev) 660 { 661 struct rtw_txq *rtwtxq, *tmp; 662 663 spin_lock_bh(&rtwdev->txq_lock); 664 665 list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) { 666 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 667 unsigned long frame_cnt; 668 669 ieee80211_txq_get_depth(txq, &frame_cnt, NULL); 670 rtw_txq_push(rtwdev, rtwtxq, frame_cnt); 671 672 list_del_init(&rtwtxq->list); 673 } 674 675 rtw_hci_tx_kick_off(rtwdev); 676 677 spin_unlock_bh(&rtwdev->txq_lock); 678 } 679 680 void rtw_tx_work(struct work_struct *w) 681 { 682 struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work); 683 684 __rtw_tx_work(rtwdev); 685 } 686 687 void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 688 { 689 struct rtw_txq *rtwtxq; 690 691 if (!txq) 692 return; 693 694 rtwtxq = (struct rtw_txq *)txq->drv_priv; 695 INIT_LIST_HEAD(&rtwtxq->list); 696 } 697 698 void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 699 { 700 struct rtw_txq *rtwtxq; 701 702 if (!txq) 703 return; 704 705 rtwtxq = (struct rtw_txq *)txq->drv_priv; 706 spin_lock_bh(&rtwdev->txq_lock); 707 if (!list_empty(&rtwtxq->list)) 708 list_del_init(&rtwtxq->list); 709 spin_unlock_bh(&rtwdev->txq_lock); 710 } 711 712 static const enum rtw_tx_queue_type ac_to_hwq[] = { 713 [IEEE80211_AC_VO] = RTW_TX_QUEUE_VO, 714 [IEEE80211_AC_VI] = RTW_TX_QUEUE_VI, 715 [IEEE80211_AC_BE] = RTW_TX_QUEUE_BE, 716 [IEEE80211_AC_BK] = RTW_TX_QUEUE_BK, 717 }; 718 719 static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS); 720 721 enum rtw_tx_queue_type rtw_tx_ac_to_hwq(enum ieee80211_ac_numbers ac) 722 { 723 if (WARN_ON(unlikely(ac >= IEEE80211_NUM_ACS))) 724 return RTW_TX_QUEUE_BE; 725 726 return ac_to_hwq[ac]; 727 } 728 EXPORT_SYMBOL(rtw_tx_ac_to_hwq); 729 730 enum rtw_tx_queue_type rtw_tx_queue_mapping(struct sk_buff *skb) 731 { 732 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 733 __le16 fc = hdr->frame_control; 734 u8 q_mapping = skb_get_queue_mapping(skb); 735 enum rtw_tx_queue_type queue; 736 737 if (unlikely(ieee80211_is_beacon(fc))) 738 queue = RTW_TX_QUEUE_BCN; 739 else if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))) 740 queue = RTW_TX_QUEUE_MGMT; 741 else if (is_broadcast_ether_addr(hdr->addr1) || 742 is_multicast_ether_addr(hdr->addr1)) 743 queue = RTW_TX_QUEUE_HI0; 744 else if (WARN_ON_ONCE(q_mapping >= ARRAY_SIZE(ac_to_hwq))) 745 queue = ac_to_hwq[IEEE80211_AC_BE]; 746 else 747 queue = ac_to_hwq[q_mapping]; 748 749 return queue; 750 } 751 EXPORT_SYMBOL(rtw_tx_queue_mapping); 752