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 timeout = RTW_TX_PROBE_TIMEOUT; 200 unsigned long flags; 201 u8 *drv_data; 202 203 /* pass sn to tx report handler through driver data */ 204 drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data; 205 *drv_data = sn; 206 207 spin_lock_irqsave(&tx_report->q_lock, flags); 208 __skb_queue_tail(&tx_report->queue, skb); 209 spin_unlock_irqrestore(&tx_report->q_lock, flags); 210 211 if (rtwdev->chip->id == RTW_CHIP_TYPE_8723D && 212 rtwdev->hci.type == RTW_HCI_TYPE_USB) 213 timeout = msecs_to_jiffies(2500); 214 215 mod_timer(&tx_report->purge_timer, jiffies + timeout); 216 } 217 EXPORT_SYMBOL(rtw_tx_report_enqueue); 218 219 static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev, 220 struct sk_buff *skb, bool acked) 221 { 222 struct ieee80211_tx_info *info; 223 224 info = IEEE80211_SKB_CB(skb); 225 ieee80211_tx_info_clear_status(info); 226 if (acked) 227 info->flags |= IEEE80211_TX_STAT_ACK; 228 else 229 info->flags &= ~IEEE80211_TX_STAT_ACK; 230 231 ieee80211_tx_status_irqsafe(rtwdev->hw, skb); 232 } 233 234 void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src) 235 { 236 struct rtw_tx_report *tx_report = &rtwdev->tx_report; 237 struct rtw_c2h_cmd *c2h; 238 struct sk_buff *cur, *tmp; 239 unsigned long flags; 240 u8 sn, st; 241 u8 *n; 242 243 c2h = get_c2h_from_skb(skb); 244 245 if (src == C2H_CCX_TX_RPT) { 246 sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload); 247 st = GET_CCX_REPORT_STATUS_V0(c2h->payload); 248 } else { 249 sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload); 250 st = GET_CCX_REPORT_STATUS_V1(c2h->payload); 251 } 252 253 spin_lock_irqsave(&tx_report->q_lock, flags); 254 skb_queue_walk_safe(&tx_report->queue, cur, tmp) { 255 n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data; 256 if (*n == sn) { 257 __skb_unlink(cur, &tx_report->queue); 258 rtw_tx_report_tx_status(rtwdev, cur, st == 0); 259 break; 260 } 261 } 262 spin_unlock_irqrestore(&tx_report->q_lock, flags); 263 } 264 265 static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb, 266 u8 lowest_rate, bool ignore_rate) 267 { 268 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 269 struct ieee80211_vif *vif = tx_info->control.vif; 270 bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags); 271 272 if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest) 273 return lowest_rate; 274 275 return __ffs(vif->bss_conf.basic_rates) + lowest_rate; 276 } 277 278 static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev, 279 struct rtw_tx_pkt_info *pkt_info, 280 struct sk_buff *skb, 281 bool ignore_rate) 282 { 283 if (rtwdev->hal.current_band_type == RTW_BAND_2G) { 284 pkt_info->rate_id = RTW_RATEID_B_20M; 285 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M, 286 ignore_rate); 287 } else { 288 pkt_info->rate_id = RTW_RATEID_G; 289 pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M, 290 ignore_rate); 291 } 292 293 pkt_info->use_rate = true; 294 pkt_info->dis_rate_fallback = true; 295 } 296 297 static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev, 298 struct rtw_tx_pkt_info *pkt_info, 299 struct sk_buff *skb) 300 { 301 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 302 u8 sec_type = 0; 303 304 if (info && info->control.hw_key) { 305 struct ieee80211_key_conf *key = info->control.hw_key; 306 307 switch (key->cipher) { 308 case WLAN_CIPHER_SUITE_WEP40: 309 case WLAN_CIPHER_SUITE_WEP104: 310 case WLAN_CIPHER_SUITE_TKIP: 311 sec_type = 0x01; 312 break; 313 case WLAN_CIPHER_SUITE_CCMP: 314 sec_type = 0x03; 315 break; 316 default: 317 break; 318 } 319 } 320 321 pkt_info->sec_type = sec_type; 322 } 323 324 static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev, 325 struct rtw_tx_pkt_info *pkt_info, 326 struct ieee80211_sta *sta, 327 struct sk_buff *skb) 328 { 329 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false); 330 pkt_info->dis_qselseq = true; 331 pkt_info->en_hwseq = true; 332 pkt_info->hw_ssn_sel = 0; 333 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 334 } 335 336 static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev, 337 struct rtw_tx_pkt_info *pkt_info, 338 struct ieee80211_sta *sta, 339 struct sk_buff *skb) 340 { 341 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 342 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 343 struct ieee80211_hw *hw = rtwdev->hw; 344 struct rtw_dm_info *dm_info = &rtwdev->dm_info; 345 struct rtw_sta_info *si; 346 u8 fix_rate; 347 u16 seq; 348 u8 ampdu_factor = 0; 349 u8 ampdu_density = 0; 350 bool ampdu_en = false; 351 u8 rate = DESC_RATE6M; 352 u8 rate_id = 6; 353 u8 bw = RTW_CHANNEL_WIDTH_20; 354 bool stbc = false; 355 bool ldpc = false; 356 357 seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 358 359 /* for broadcast/multicast, use default values */ 360 if (!sta) 361 goto out; 362 363 if (info->flags & IEEE80211_TX_CTL_AMPDU) { 364 ampdu_en = true; 365 ampdu_factor = get_tx_ampdu_factor(sta); 366 ampdu_density = get_tx_ampdu_density(sta); 367 } 368 369 if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold) 370 pkt_info->rts = true; 371 372 if (sta->deflink.vht_cap.vht_supported) 373 rate = get_highest_vht_tx_rate(rtwdev, sta); 374 else if (sta->deflink.ht_cap.ht_supported) 375 rate = get_highest_ht_tx_rate(rtwdev, sta); 376 else if (sta->deflink.supp_rates[0] <= 0xf) 377 rate = DESC_RATE11M; 378 else 379 rate = DESC_RATE54M; 380 381 si = (struct rtw_sta_info *)sta->drv_priv; 382 383 bw = si->bw_mode; 384 rate_id = si->rate_id; 385 stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en; 386 ldpc = si->ldpc_en; 387 388 out: 389 pkt_info->seq = seq; 390 pkt_info->ampdu_factor = ampdu_factor; 391 pkt_info->ampdu_density = ampdu_density; 392 pkt_info->ampdu_en = ampdu_en; 393 pkt_info->rate = rate; 394 pkt_info->rate_id = rate_id; 395 pkt_info->bw = bw; 396 pkt_info->stbc = stbc; 397 pkt_info->ldpc = ldpc; 398 399 fix_rate = dm_info->fix_rate; 400 if (fix_rate < DESC_RATE_MAX) { 401 pkt_info->rate = fix_rate; 402 pkt_info->dis_rate_fallback = true; 403 pkt_info->use_rate = true; 404 } 405 } 406 407 void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev, 408 struct rtw_tx_pkt_info *pkt_info, 409 struct ieee80211_sta *sta, 410 struct sk_buff *skb) 411 { 412 const struct rtw_chip_info *chip = rtwdev->chip; 413 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 414 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 415 struct ieee80211_vif *vif = info->control.vif; 416 struct rtw_sta_info *si; 417 struct rtw_vif *rtwvif; 418 __le16 fc = hdr->frame_control; 419 bool bmc; 420 421 if (sta) { 422 si = (struct rtw_sta_info *)sta->drv_priv; 423 pkt_info->mac_id = si->mac_id; 424 } else if (vif) { 425 rtwvif = (struct rtw_vif *)vif->drv_priv; 426 pkt_info->mac_id = rtwvif->mac_id; 427 } 428 429 if (ieee80211_is_mgmt(fc) || ieee80211_is_any_nullfunc(fc)) 430 rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb); 431 else if (ieee80211_is_data(fc)) 432 rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb); 433 434 bmc = is_broadcast_ether_addr(hdr->addr1) || 435 is_multicast_ether_addr(hdr->addr1); 436 437 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) 438 rtw_tx_report_enable(rtwdev, pkt_info); 439 440 pkt_info->bmc = bmc; 441 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 442 pkt_info->tx_pkt_size = skb->len; 443 pkt_info->offset = chip->tx_pkt_desc_sz; 444 pkt_info->qsel = skb->priority; 445 pkt_info->ls = true; 446 447 /* maybe merge with tx status ? */ 448 rtw_tx_stats(rtwdev, vif, skb); 449 } 450 451 void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev, 452 struct rtw_tx_pkt_info *pkt_info, 453 struct sk_buff *skb, 454 enum rtw_rsvd_packet_type type) 455 { 456 const struct rtw_chip_info *chip = rtwdev->chip; 457 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 458 bool bmc; 459 460 /* A beacon or dummy reserved page packet indicates that it is the first 461 * reserved page, and the qsel of it will be set in each hci. 462 */ 463 if (type != RSVD_BEACON && type != RSVD_DUMMY) 464 pkt_info->qsel = TX_DESC_QSEL_MGMT; 465 466 rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true); 467 468 bmc = is_broadcast_ether_addr(hdr->addr1) || 469 is_multicast_ether_addr(hdr->addr1); 470 pkt_info->bmc = bmc; 471 pkt_info->tx_pkt_size = skb->len; 472 pkt_info->offset = chip->tx_pkt_desc_sz; 473 pkt_info->ls = true; 474 if (type == RSVD_PS_POLL) { 475 pkt_info->nav_use_hdr = true; 476 } else { 477 pkt_info->dis_qselseq = true; 478 pkt_info->en_hwseq = true; 479 pkt_info->hw_ssn_sel = 0; 480 } 481 if (type == RSVD_QOS_NULL) 482 pkt_info->bt_null = true; 483 484 if (type == RSVD_BEACON) { 485 struct rtw_rsvd_page *rsvd_pkt; 486 int hdr_len; 487 488 rsvd_pkt = list_first_entry_or_null(&rtwdev->rsvd_page_list, 489 struct rtw_rsvd_page, 490 build_list); 491 if (rsvd_pkt && rsvd_pkt->tim_offset != 0) { 492 hdr_len = sizeof(struct ieee80211_hdr_3addr); 493 pkt_info->tim_offset = rsvd_pkt->tim_offset - hdr_len; 494 } 495 } 496 497 rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb); 498 499 /* TODO: need to change hw port and hw ssn sel for multiple vifs */ 500 } 501 502 struct sk_buff * 503 rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev, 504 struct rtw_tx_pkt_info *pkt_info, 505 u8 *buf, u32 size) 506 { 507 const struct rtw_chip_info *chip = rtwdev->chip; 508 struct sk_buff *skb; 509 u32 tx_pkt_desc_sz; 510 u32 length; 511 512 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 513 length = size + tx_pkt_desc_sz; 514 skb = dev_alloc_skb(length); 515 if (!skb) { 516 rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n"); 517 return NULL; 518 } 519 520 skb_reserve(skb, tx_pkt_desc_sz); 521 skb_put_data(skb, buf, size); 522 rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON); 523 524 return skb; 525 } 526 EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get); 527 528 struct sk_buff * 529 rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev, 530 struct rtw_tx_pkt_info *pkt_info, 531 u8 *buf, u32 size) 532 { 533 const struct rtw_chip_info *chip = rtwdev->chip; 534 struct sk_buff *skb; 535 u32 tx_pkt_desc_sz; 536 u32 length; 537 538 tx_pkt_desc_sz = chip->tx_pkt_desc_sz; 539 length = size + tx_pkt_desc_sz; 540 skb = dev_alloc_skb(length); 541 if (!skb) { 542 rtw_err(rtwdev, "failed to alloc write data h2c skb\n"); 543 return NULL; 544 } 545 546 skb_reserve(skb, tx_pkt_desc_sz); 547 skb_put_data(skb, buf, size); 548 pkt_info->tx_pkt_size = size; 549 550 return skb; 551 } 552 EXPORT_SYMBOL(rtw_tx_write_data_h2c_get); 553 554 void rtw_tx(struct rtw_dev *rtwdev, 555 struct ieee80211_tx_control *control, 556 struct sk_buff *skb) 557 { 558 struct rtw_tx_pkt_info pkt_info = {0}; 559 int ret; 560 561 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb); 562 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 563 if (ret) { 564 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 565 goto out; 566 } 567 568 rtw_hci_tx_kick_off(rtwdev); 569 570 return; 571 572 out: 573 ieee80211_free_txskb(rtwdev->hw, skb); 574 } 575 576 static void rtw_txq_check_agg(struct rtw_dev *rtwdev, 577 struct rtw_txq *rtwtxq, 578 struct sk_buff *skb) 579 { 580 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 581 struct ieee80211_tx_info *info; 582 struct rtw_sta_info *si; 583 584 if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) { 585 info = IEEE80211_SKB_CB(skb); 586 info->flags |= IEEE80211_TX_CTL_AMPDU; 587 return; 588 } 589 590 if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) 591 return; 592 593 if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags)) 594 return; 595 596 if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE))) 597 return; 598 599 if (!txq->sta) 600 return; 601 602 si = (struct rtw_sta_info *)txq->sta->drv_priv; 603 set_bit(txq->tid, si->tid_ba); 604 605 ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work); 606 } 607 608 static int rtw_txq_push_skb(struct rtw_dev *rtwdev, 609 struct rtw_txq *rtwtxq, 610 struct sk_buff *skb) 611 { 612 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 613 struct rtw_tx_pkt_info pkt_info = {0}; 614 int ret; 615 616 rtw_txq_check_agg(rtwdev, rtwtxq, skb); 617 618 rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb); 619 ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb); 620 if (ret) { 621 rtw_err(rtwdev, "failed to write TX skb to HCI\n"); 622 ieee80211_free_txskb(rtwdev->hw, skb); 623 return ret; 624 } 625 return 0; 626 } 627 628 static void rtw_txq_push(struct rtw_dev *rtwdev, 629 struct rtw_txq *rtwtxq, 630 unsigned long frames) 631 { 632 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 633 struct sk_buff *skb; 634 unsigned long i; 635 int ret; 636 637 rcu_read_lock(); 638 639 for (i = 0; i < frames; i++) { 640 skb = ieee80211_tx_dequeue(rtwdev->hw, txq); 641 if (!skb) 642 break; 643 644 ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb); 645 if (ret) { 646 rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret); 647 break; 648 } 649 } 650 651 rcu_read_unlock(); 652 } 653 654 void __rtw_tx_work(struct rtw_dev *rtwdev) 655 { 656 struct rtw_txq *rtwtxq, *tmp; 657 658 spin_lock_bh(&rtwdev->txq_lock); 659 660 list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) { 661 struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq); 662 unsigned long frame_cnt; 663 664 ieee80211_txq_get_depth(txq, &frame_cnt, NULL); 665 rtw_txq_push(rtwdev, rtwtxq, frame_cnt); 666 667 list_del_init(&rtwtxq->list); 668 } 669 670 rtw_hci_tx_kick_off(rtwdev); 671 672 spin_unlock_bh(&rtwdev->txq_lock); 673 } 674 675 void rtw_tx_work(struct work_struct *w) 676 { 677 struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work); 678 679 __rtw_tx_work(rtwdev); 680 } 681 682 void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 683 { 684 struct rtw_txq *rtwtxq; 685 686 if (!txq) 687 return; 688 689 rtwtxq = (struct rtw_txq *)txq->drv_priv; 690 INIT_LIST_HEAD(&rtwtxq->list); 691 } 692 693 void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq) 694 { 695 struct rtw_txq *rtwtxq; 696 697 if (!txq) 698 return; 699 700 rtwtxq = (struct rtw_txq *)txq->drv_priv; 701 spin_lock_bh(&rtwdev->txq_lock); 702 if (!list_empty(&rtwtxq->list)) 703 list_del_init(&rtwtxq->list); 704 spin_unlock_bh(&rtwdev->txq_lock); 705 } 706 707 static const enum rtw_tx_queue_type ac_to_hwq[] = { 708 [IEEE80211_AC_VO] = RTW_TX_QUEUE_VO, 709 [IEEE80211_AC_VI] = RTW_TX_QUEUE_VI, 710 [IEEE80211_AC_BE] = RTW_TX_QUEUE_BE, 711 [IEEE80211_AC_BK] = RTW_TX_QUEUE_BK, 712 }; 713 714 static_assert(ARRAY_SIZE(ac_to_hwq) == IEEE80211_NUM_ACS); 715 716 enum rtw_tx_queue_type rtw_tx_ac_to_hwq(enum ieee80211_ac_numbers ac) 717 { 718 if (WARN_ON(unlikely(ac >= IEEE80211_NUM_ACS))) 719 return RTW_TX_QUEUE_BE; 720 721 return ac_to_hwq[ac]; 722 } 723 EXPORT_SYMBOL(rtw_tx_ac_to_hwq); 724 725 enum rtw_tx_queue_type rtw_tx_queue_mapping(struct sk_buff *skb) 726 { 727 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 728 __le16 fc = hdr->frame_control; 729 u8 q_mapping = skb_get_queue_mapping(skb); 730 enum rtw_tx_queue_type queue; 731 732 if (unlikely(ieee80211_is_beacon(fc))) 733 queue = RTW_TX_QUEUE_BCN; 734 else if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))) 735 queue = RTW_TX_QUEUE_MGMT; 736 else if (is_broadcast_ether_addr(hdr->addr1) || 737 is_multicast_ether_addr(hdr->addr1)) 738 queue = RTW_TX_QUEUE_HI0; 739 else if (WARN_ON_ONCE(q_mapping >= ARRAY_SIZE(ac_to_hwq))) 740 queue = ac_to_hwq[IEEE80211_AC_BE]; 741 else 742 queue = ac_to_hwq[q_mapping]; 743 744 return queue; 745 } 746 EXPORT_SYMBOL(rtw_tx_queue_mapping); 747