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 = timer_container_of(rtwdev, t, 182 tx_report.purge_timer); 183 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 184 unsigned long flags; 185 186 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 } 195 196 void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn) 197 { 198 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 199 unsigned long flags; 200 u8 *drv_data; 201 202 /* pass sn to tx report handler through driver data */ 203 drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data; 204 *drv_data = sn; 205 206 spin_lock_irqsave(&tx_report->q_lock, flags); 207 __skb_queue_tail(&tx_report->queue, skb); 208 spin_unlock_irqrestore(&tx_report->q_lock, flags); 209 210 mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT); 211 } 212 EXPORT_SYMBOL(rtw_tx_report_enqueue); 213 214 static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev, 215 struct sk_buff *skb, bool acked) 216 { 217 struct ieee80211_tx_info *info; 218 219 info = IEEE80211_SKB_CB(skb); 220 ieee80211_tx_info_clear_status(info); 221 if (acked) 222 info->flags |= IEEE80211_TX_STAT_ACK; 223 else 224 info->flags &= ~IEEE80211_TX_STAT_ACK; 225 226 ieee80211_tx_status_irqsafe(rtwdev->hw, skb); 227 } 228 229 void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src) 230 { 231 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 232 struct rtw_c2h_cmd *c2h; 233 struct sk_buff *cur, *tmp; 234 unsigned long flags; 235 u8 sn, st; 236 u8 *n; 237 238 c2h = get_c2h_from_skb(skb); 239 240 if (src == C2H_CCX_TX_RPT) { 241 sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload); 242 st = GET_CCX_REPORT_STATUS_V0(c2h->payload); 243 } else { 244 sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload); 245 st = GET_CCX_REPORT_STATUS_V1(c2h->payload); 246 } 247 248 spin_lock_irqsave(&tx_report->q_lock, flags); 249 skb_queue_walk_safe(&tx_report->queue, cur, tmp) { 250 n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data; 251 if (*n == sn) { 252 __skb_unlink(cur, &tx_report->queue); 253 rtw_tx_report_tx_status(rtwdev, cur, st == 0); 254 break; 255 } 256 } 257 spin_unlock_irqrestore(&tx_report->q_lock, flags); 258 } 259 260 static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb, 261 u8 lowest_rate, bool ignore_rate) 262 { 263 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 264 struct ieee80211_vif *vif = tx_info->control.vif; 265 bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags); 266 267 if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest) 268 return lowest_rate; 269 270 return __ffs(vif->bss_conf.basic_rates) + lowest_rate; 271 } 272 273 static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev, 274 struct rtw_tx_pkt_info *pkt_info, 275 struct sk_buff *skb, 276 bool ignore_rate) 277 { 278 if (rtwdev->hal.current_band_type == RTW_BAND_2G) { 279 pkt_info->rate_id = RTW_RATEID_B_20M; 280 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M, 281 ignore_rate); 282 } else { 283 pkt_info->rate_id = RTW_RATEID_G; 284 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M, 285 ignore_rate); 286 } 287 288 pkt_info->use_rate = true; 289 pkt_info->dis_rate_fallback = true; 290 } 291 292 static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev, 293 struct rtw_tx_pkt_info *pkt_info, 294 struct sk_buff *skb) 295 { 296 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 297 u8 sec_type = 0; 298 299 if (info && info->control.hw_key) { 300 struct ieee80211_key_conf *key = info->control.hw_key; 301 302 switch (key->cipher) { 303 case WLAN_CIPHER_SUITE_WEP40: 304 case WLAN_CIPHER_SUITE_WEP104: 305 case WLAN_CIPHER_SUITE_TKIP: 306 sec_type = 0x01; 307 break; 308 case WLAN_CIPHER_SUITE_CCMP: 309 sec_type = 0x03; 310 break; 311 default: 312 break; 313 } 314 } 315 316 pkt_info->sec_type = sec_type; 317 } 318 319 static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev, 320 struct rtw_tx_pkt_info *pkt_info, 321 struct ieee80211_sta *sta, 322 struct sk_buff *skb) 323 { 324 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false); 325 pkt_info->dis_qselseq = true; 326 pkt_info->en_hwseq = true; 327 pkt_info->hw_ssn_sel = 0; 328 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 329 } 330 331 static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev, 332 struct rtw_tx_pkt_info *pkt_info, 333 struct ieee80211_sta *sta, 334 struct sk_buff *skb) 335 { 336 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 337 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 338 struct ieee80211_hw *hw = rtwdev->hw; 339 struct rtw_dm_info *dm_info = &rtwdev->dm_info; 340 struct rtw_sta_info *si; 341 u8 fix_rate; 342 u16 seq; 343 u8 ampdu_factor = 0; 344 u8 ampdu_density = 0; 345 bool ampdu_en = false; 346 u8 rate = DESC_RATE6M; 347 u8 rate_id = 6; 348 u8 bw = RTW_CHANNEL_WIDTH_20; 349 bool stbc = false; 350 bool ldpc = false; 351 352 seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 353 354 /* for broadcast/multicast, use default values */ 355 if (!sta) 356 goto out; 357 358 if (info->flags & IEEE80211_TX_CTL_AMPDU) { 359 ampdu_en = true; 360 ampdu_factor = get_tx_ampdu_factor(sta); 361 ampdu_density = get_tx_ampdu_density(sta); 362 } 363 364 if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold) 365 pkt_info->rts = true; 366 367 if (sta->deflink.vht_cap.vht_supported) 368 rate = get_highest_vht_tx_rate(rtwdev, sta); 369 else if (sta->deflink.ht_cap.ht_supported) 370 rate = get_highest_ht_tx_rate(rtwdev, sta); 371 else if (sta->deflink.supp_rates[0] <= 0xf) 372 rate = DESC_RATE11M; 373 else 374 rate = DESC_RATE54M; 375 376 si = (struct rtw_sta_info *)sta->drv_priv; 377 378 bw = si->bw_mode; 379 rate_id = si->rate_id; 380 stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en; 381 ldpc = si->ldpc_en; 382 383 out: 384 pkt_info->seq = seq; 385 pkt_info->ampdu_factor = ampdu_factor; 386 pkt_info->ampdu_density = ampdu_density; 387 pkt_info->ampdu_en = ampdu_en; 388 pkt_info->rate = rate; 389 pkt_info->rate_id = rate_id; 390 pkt_info->bw = bw; 391 pkt_info->stbc = stbc; 392 pkt_info->ldpc = ldpc; 393 394 fix_rate = dm_info->fix_rate; 395 if (fix_rate < DESC_RATE_MAX) { 396 pkt_info->rate = fix_rate; 397 pkt_info->dis_rate_fallback = true; 398 pkt_info->use_rate = true; 399 } 400 } 401 402 void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev, 403 struct rtw_tx_pkt_info *pkt_info, 404 struct ieee80211_sta *sta, 405 struct sk_buff *skb) 406 { 407 const struct rtw_chip_info *chip = rtwdev->chip; 408 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 409 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 410 struct ieee80211_vif *vif = info->control.vif; 411 struct rtw_sta_info *si; 412 struct rtw_vif *rtwvif; 413 __le16 fc = hdr->frame_control; 414 bool bmc; 415 416 if (sta) { 417 si = (struct rtw_sta_info *)sta->drv_priv; 418 pkt_info->mac_id = si->mac_id; 419 } else if (vif) { 420 rtwvif = (struct rtw_vif *)vif->drv_priv; 421 pkt_info->mac_id = rtwvif->mac_id; 422 } 423 424 if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc)) 425 rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb); 426 else if (ieee80211_is_data(fc)) 427 rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb); 428 429 bmc = is_broadcast_ether_addr(hdr->addr1) || 430 is_multicast_ether_addr(hdr->addr1); 431 432 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) 433 rtw_tx_report_enable(rtwdev, pkt_info); 434 435 pkt_info->bmc = bmc; 436 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 437 pkt_info->tx_pkt_size = skb->len; 438 pkt_info->offset = chip->tx_pkt_desc_sz; 439 pkt_info->qsel = skb->priority; 440 pkt_info->ls = true; 441 442 /* maybe merge with tx status ? */ 443 rtw_tx_stats(rtwdev, vif, skb); 444 } 445 446 void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev, 447 struct rtw_tx_pkt_info *pkt_info, 448 struct sk_buff *skb, 449 enum rtw_rsvd_packet_type type) 450 { 451 const struct rtw_chip_info *chip = rtwdev->chip; 452 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 453 bool bmc; 454 455 /* A beacon or dummy reserved page packet indicates that it is the first 456 * reserved page, and the qsel of it will be set in each hci. 457 */ 458 if (type != RSVD_BEACON && type != RSVD_DUMMY) 459 pkt_info->qsel = TX_DESC_QSEL_MGMT; 460 461 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true); 462 463 bmc = is_broadcast_ether_addr(hdr->addr1) || 464 is_multicast_ether_addr(hdr->addr1); 465 pkt_info->bmc = bmc; 466 pkt_info->tx_pkt_size = skb->len; 467 pkt_info->offset = chip->tx_pkt_desc_sz; 468 pkt_info->ls = true; 469 if (type == RSVD_PS_POLL) { 470 pkt_info->nav_use_hdr = true; 471 } else { 472 pkt_info->dis_qselseq = true; 473 pkt_info->en_hwseq = true; 474 pkt_info->hw_ssn_sel = 0; 475 } 476 if (type == RSVD_QOS_NULL) 477 pkt_info->bt_null = true; 478 479 if (type == RSVD_BEACON) { 480 struct rtw_rsvd_page *rsvd_pkt; 481 int hdr_len; 482 483 rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list, 484 struct rtw_rsvd_page, 485 build_list); 486 if (rsvd_pkt && rsvd_pkt->tim_offset != 0) { 487 hdr_len = sizeof(struct ieee80211_hdr_3addr); 488 pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len; 489 } 490 } 491 492 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 493 494 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 495 } 496 497 struct sk_buff * 498 rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev, 499 struct rtw_tx_pkt_info *pkt_info, 500 u8 *buf, u32 size) 501 { 502 const struct rtw_chip_info *chip = rtwdev->chip; 503 struct sk_buff *skb; 504 u32 tx_pkt_desc_sz; 505 u32 length; 506 507 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 508 length = size + tx_pkt_desc_sz; 509 skb = dev_alloc_skb(length); 510 if (!skb) { 511 rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n"); 512 return NULL; 513 } 514 515 skb_reserve(skb, tx_pkt_desc_sz); 516 skb_put_data(skb, buf, size); 517 rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON); 518 519 return skb; 520 } 521 EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get); 522 523 struct sk_buff * 524 rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev, 525 struct rtw_tx_pkt_info *pkt_info, 526 u8 *buf, u32 size) 527 { 528 const struct rtw_chip_info *chip = rtwdev->chip; 529 struct sk_buff *skb; 530 u32 tx_pkt_desc_sz; 531 u32 length; 532 533 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 534 length = size + tx_pkt_desc_sz; 535 skb = dev_alloc_skb(length); 536 if (!skb) { 537 rtw_err(rtwdev, "failed to alloc write data h2c skb\n"); 538 return NULL; 539 } 540 541 skb_reserve(skb, tx_pkt_desc_sz); 542 skb_put_data(skb, buf, size); 543 pkt_info->tx_pkt_size = size; 544 545 return skb; 546 } 547 EXPORT_SYMBOL(rtw_tx_write_data_h2c_get); 548 549 void rtw_tx(struct rtw_dev *rtwdev, 550 struct ieee80211_tx_control *control, 551 struct sk_buff *skb) 552 { 553 struct rtw_tx_pkt_info pkt_info = {0}; 554 int ret; 555 556 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb); 557 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 558 if (ret) { 559 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 560 goto out; 561 } 562 563 rtw_hci_tx_kick_off(rtwdev); 564 565 return; 566 567 out: 568 ieee80211_free_txskb(rtwdev->hw, skb); 569 } 570 571 static void rtw_txq_check_agg(struct rtw_dev *rtwdev, 572 struct rtw_txq *rtwtxq, 573 struct sk_buff *skb) 574 { 575 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 576 struct ieee80211_tx_info *info; 577 struct rtw_sta_info *si; 578 579 if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) { 580 info = IEEE80211_SKB_CB(skb); 581 info->flags |= IEEE80211_TX_CTL_AMPDU; 582 return; 583 } 584 585 if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) 586 return; 587 588 if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags)) 589 return; 590 591 if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE))) 592 return; 593 594 if (!txq->sta) 595 return; 596 597 si = (struct rtw_sta_info *)txq->sta->drv_priv; 598 set_bit(txq->tid, si->tid_ba); 599 600 ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work); 601 } 602 603 static int rtw_txq_push_skb(struct rtw_dev *rtwdev, 604 struct rtw_txq *rtwtxq, 605 struct sk_buff *skb) 606 { 607 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 608 struct rtw_tx_pkt_info pkt_info = {0}; 609 int ret; 610 611 rtw_txq_check_agg(rtwdev, rtwtxq, skb); 612 613 rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb); 614 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 615 if (ret) { 616 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 617 return ret; 618 } 619 return 0; 620 } 621 622 static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev, 623 struct rtw_txq *rtwtxq) 624 { 625 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 626 struct sk_buff *skb; 627 628 skb = ieee80211_tx_dequeue(rtwdev->hw, txq); 629 if (!skb) 630 return NULL; 631 632 return skb; 633 } 634 635 static void rtw_txq_push(struct rtw_dev *rtwdev, 636 struct rtw_txq *rtwtxq, 637 unsigned long frames) 638 { 639 struct sk_buff *skb; 640 int ret; 641 int i; 642 643 rcu_read_lock(); 644 645 for (i = 0; i < frames; i++) { 646 skb = rtw_txq_dequeue(rtwdev, rtwtxq); 647 if (!skb) 648 break; 649 650 ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb); 651 if (ret) { 652 rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret); 653 break; 654 } 655 } 656 657 rcu_read_unlock(); 658 } 659 660 void __rtw_tx_work(struct rtw_dev *rtwdev) 661 { 662 struct rtw_txq *rtwtxq, *tmp; 663 664 spin_lock_bh(&rtwdev->txq_lock); 665 666 list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) { 667 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 668 unsigned long frame_cnt; 669 670 ieee80211_txq_get_depth(txq, &frame_cnt, NULL); 671 rtw_txq_push(rtwdev, rtwtxq, frame_cnt); 672 673 list_del_init(&rtwtxq->list); 674 } 675 676 rtw_hci_tx_kick_off(rtwdev); 677 678 spin_unlock_bh(&rtwdev->txq_lock); 679 } 680 681 void rtw_tx_work(struct work_struct *w) 682 { 683 struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work); 684 685 __rtw_tx_work(rtwdev); 686 } 687 688 void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 689 { 690 struct rtw_txq *rtwtxq; 691 692 if (!txq) 693 return; 694 695 rtwtxq = (struct rtw_txq *)txq->drv_priv; 696 INIT_LIST_HEAD(&rtwtxq->list); 697 } 698 699 void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 700 { 701 struct rtw_txq *rtwtxq; 702 703 if (!txq) 704 return; 705 706 rtwtxq = (struct rtw_txq *)txq->drv_priv; 707 spin_lock_bh(&rtwdev->txq_lock); 708 if (!list_empty(&rtwtxq->list)) 709 list_del_init(&rtwtxq->list); 710 spin_unlock_bh(&rtwdev->txq_lock); 711 } 712 713 static const enum rtw_tx_queue_type ac_to_hwq[] = { 714 [IEEE80211_AC_VO] = RTW_TX_QUEUE_VO, 715 [IEEE80211_AC_VI] = RTW_TX_QUEUE_VI, 716 [IEEE80211_AC_BE] = RTW_TX_QUEUE_BE, 717 [IEEE80211_AC_BK] = RTW_TX_QUEUE_BK, 718 }; 719 720 static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS); 721 722 enum rtw_tx_queue_type rtw_tx_ac_to_hwq(enum ieee80211_ac_numbers ac) 723 { 724 if (WARN_ON(unlikely(ac >= IEEE80211_NUM_ACS))) 725 return RTW_TX_QUEUE_BE; 726 727 return ac_to_hwq[ac]; 728 } 729 EXPORT_SYMBOL(rtw_tx_ac_to_hwq); 730 731 enum rtw_tx_queue_type rtw_tx_queue_mapping(struct sk_buff *skb) 732 { 733 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 734 __le16 fc = hdr->frame_control; 735 u8 q_mapping = skb_get_queue_mapping(skb); 736 enum rtw_tx_queue_type queue; 737 738 if (unlikely(ieee80211_is_beacon(fc))) 739 queue = RTW_TX_QUEUE_BCN; 740 else if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))) 741 queue = RTW_TX_QUEUE_MGMT; 742 else if (is_broadcast_ether_addr(hdr->addr1) || 743 is_multicast_ether_addr(hdr->addr1)) 744 queue = RTW_TX_QUEUE_HI0; 745 else if (WARN_ON_ONCE(q_mapping >= ARRAY_SIZE(ac_to_hwq))) 746 queue = ac_to_hwq[IEEE80211_AC_BE]; 747 else 748 queue = ac_to_hwq[q_mapping]; 749 750 return queue; 751 } 752 EXPORT_SYMBOL(rtw_tx_queue_mapping); 753