1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2005-2011 Atheros Communications Inc. 4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc. 5 * Copyright (c) 2018, The Linux Foundation. All rights reserved. 6 */ 7 8 #include "core.h" 9 #include "htc.h" 10 #include "htt.h" 11 #include "txrx.h" 12 #include "debug.h" 13 #include "trace.h" 14 #include "mac.h" 15 16 #include <linux/log2.h> 17 #include <linux/bitfield.h> 18 19 /* when under memory pressure rx ring refill may fail and needs a retry */ 20 #define HTT_RX_RING_REFILL_RETRY_MS 50 21 22 #define HTT_RX_RING_REFILL_RESCHED_MS 5 23 24 /* shortcut to interpret a raw memory buffer as a rx descriptor */ 25 #define HTT_RX_BUF_TO_RX_DESC(hw, buf) ath10k_htt_rx_desc_from_raw_buffer(hw, buf) 26 27 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb); 28 29 static struct sk_buff * 30 ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr) 31 { 32 struct ath10k_skb_rxcb *rxcb; 33 34 hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr) 35 if (rxcb->paddr == paddr) 36 return ATH10K_RXCB_SKB(rxcb); 37 38 WARN_ON_ONCE(1); 39 return NULL; 40 } 41 42 static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt) 43 { 44 struct sk_buff *skb; 45 struct ath10k_skb_rxcb *rxcb; 46 struct hlist_node *n; 47 int i; 48 49 if (htt->rx_ring.in_ord_rx) { 50 hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) { 51 skb = ATH10K_RXCB_SKB(rxcb); 52 dma_unmap_single(htt->ar->dev, rxcb->paddr, 53 skb->len + skb_tailroom(skb), 54 DMA_FROM_DEVICE); 55 hash_del(&rxcb->hlist); 56 dev_kfree_skb_any(skb); 57 } 58 } else { 59 for (i = 0; i < htt->rx_ring.size; i++) { 60 skb = htt->rx_ring.netbufs_ring[i]; 61 if (!skb) 62 continue; 63 64 rxcb = ATH10K_SKB_RXCB(skb); 65 dma_unmap_single(htt->ar->dev, rxcb->paddr, 66 skb->len + skb_tailroom(skb), 67 DMA_FROM_DEVICE); 68 dev_kfree_skb_any(skb); 69 } 70 } 71 72 htt->rx_ring.fill_cnt = 0; 73 hash_init(htt->rx_ring.skb_table); 74 memset(htt->rx_ring.netbufs_ring, 0, 75 htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0])); 76 } 77 78 static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt) 79 { 80 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32); 81 } 82 83 static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt) 84 { 85 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64); 86 } 87 88 static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt, 89 void *vaddr) 90 { 91 htt->rx_ring.paddrs_ring_32 = vaddr; 92 } 93 94 static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt, 95 void *vaddr) 96 { 97 htt->rx_ring.paddrs_ring_64 = vaddr; 98 } 99 100 static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt, 101 dma_addr_t paddr, int idx) 102 { 103 htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr); 104 } 105 106 static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt, 107 dma_addr_t paddr, int idx) 108 { 109 htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr); 110 } 111 112 static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx) 113 { 114 htt->rx_ring.paddrs_ring_32[idx] = 0; 115 } 116 117 static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx) 118 { 119 htt->rx_ring.paddrs_ring_64[idx] = 0; 120 } 121 122 static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt) 123 { 124 return (void *)htt->rx_ring.paddrs_ring_32; 125 } 126 127 static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt) 128 { 129 return (void *)htt->rx_ring.paddrs_ring_64; 130 } 131 132 static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 133 { 134 struct ath10k_hw_params *hw = &htt->ar->hw_params; 135 struct htt_rx_desc *rx_desc; 136 struct ath10k_skb_rxcb *rxcb; 137 struct sk_buff *skb; 138 dma_addr_t paddr; 139 int ret = 0, idx; 140 141 /* The Full Rx Reorder firmware has no way of telling the host 142 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring. 143 * To keep things simple make sure ring is always half empty. This 144 * guarantees there'll be no replenishment overruns possible. 145 */ 146 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2); 147 148 idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); 149 150 if (idx < 0 || idx >= htt->rx_ring.size) { 151 ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n"); 152 idx &= htt->rx_ring.size_mask; 153 ret = -ENOMEM; 154 goto fail; 155 } 156 157 while (num > 0) { 158 skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN); 159 if (!skb) { 160 ret = -ENOMEM; 161 goto fail; 162 } 163 164 if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN)) 165 skb_pull(skb, 166 PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) - 167 skb->data); 168 169 /* Clear rx_desc attention word before posting to Rx ring */ 170 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, skb->data); 171 ath10k_htt_rx_desc_get_attention(hw, rx_desc)->flags = __cpu_to_le32(0); 172 173 paddr = dma_map_single(htt->ar->dev, skb->data, 174 skb->len + skb_tailroom(skb), 175 DMA_FROM_DEVICE); 176 177 if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) { 178 dev_kfree_skb_any(skb); 179 ret = -ENOMEM; 180 goto fail; 181 } 182 183 rxcb = ATH10K_SKB_RXCB(skb); 184 rxcb->paddr = paddr; 185 htt->rx_ring.netbufs_ring[idx] = skb; 186 ath10k_htt_set_paddrs_ring(htt, paddr, idx); 187 htt->rx_ring.fill_cnt++; 188 189 if (htt->rx_ring.in_ord_rx) { 190 hash_add(htt->rx_ring.skb_table, 191 &ATH10K_SKB_RXCB(skb)->hlist, 192 paddr); 193 } 194 195 num--; 196 idx++; 197 idx &= htt->rx_ring.size_mask; 198 } 199 200 fail: 201 /* 202 * Make sure the rx buffer is updated before available buffer 203 * index to avoid any potential rx ring corruption. 204 */ 205 mb(); 206 *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx); 207 return ret; 208 } 209 210 static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 211 { 212 lockdep_assert_held(&htt->rx_ring.lock); 213 return __ath10k_htt_rx_ring_fill_n(htt, num); 214 } 215 216 static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt) 217 { 218 int ret, num_deficit, num_to_fill; 219 220 /* Refilling the whole RX ring buffer proves to be a bad idea. The 221 * reason is RX may take up significant amount of CPU cycles and starve 222 * other tasks, e.g. TX on an ethernet device while acting as a bridge 223 * with ath10k wlan interface. This ended up with very poor performance 224 * once CPU the host system was overwhelmed with RX on ath10k. 225 * 226 * By limiting the number of refills the replenishing occurs 227 * progressively. This in turns makes use of the fact tasklets are 228 * processed in FIFO order. This means actual RX processing can starve 229 * out refilling. If there's not enough buffers on RX ring FW will not 230 * report RX until it is refilled with enough buffers. This 231 * automatically balances load wrt to CPU power. 232 * 233 * This probably comes at a cost of lower maximum throughput but 234 * improves the average and stability. 235 */ 236 spin_lock_bh(&htt->rx_ring.lock); 237 num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt; 238 num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit); 239 num_deficit -= num_to_fill; 240 ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill); 241 if (ret == -ENOMEM) { 242 /* 243 * Failed to fill it to the desired level - 244 * we'll start a timer and try again next time. 245 * As long as enough buffers are left in the ring for 246 * another A-MPDU rx, no special recovery is needed. 247 */ 248 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 249 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS)); 250 } else if (num_deficit > 0) { 251 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 252 msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS)); 253 } 254 spin_unlock_bh(&htt->rx_ring.lock); 255 } 256 257 static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t) 258 { 259 struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer); 260 261 ath10k_htt_rx_msdu_buff_replenish(htt); 262 } 263 264 int ath10k_htt_rx_ring_refill(struct ath10k *ar) 265 { 266 struct ath10k_htt *htt = &ar->htt; 267 int ret; 268 269 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 270 return 0; 271 272 spin_lock_bh(&htt->rx_ring.lock); 273 ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level - 274 htt->rx_ring.fill_cnt)); 275 276 if (ret) 277 ath10k_htt_rx_ring_free(htt); 278 279 spin_unlock_bh(&htt->rx_ring.lock); 280 281 return ret; 282 } 283 284 void ath10k_htt_rx_free(struct ath10k_htt *htt) 285 { 286 if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 287 return; 288 289 del_timer_sync(&htt->rx_ring.refill_retry_timer); 290 291 skb_queue_purge(&htt->rx_msdus_q); 292 skb_queue_purge(&htt->rx_in_ord_compl_q); 293 skb_queue_purge(&htt->tx_fetch_ind_q); 294 295 spin_lock_bh(&htt->rx_ring.lock); 296 ath10k_htt_rx_ring_free(htt); 297 spin_unlock_bh(&htt->rx_ring.lock); 298 299 dma_free_coherent(htt->ar->dev, 300 ath10k_htt_get_rx_ring_size(htt), 301 ath10k_htt_get_vaddr_ring(htt), 302 htt->rx_ring.base_paddr); 303 304 dma_free_coherent(htt->ar->dev, 305 sizeof(*htt->rx_ring.alloc_idx.vaddr), 306 htt->rx_ring.alloc_idx.vaddr, 307 htt->rx_ring.alloc_idx.paddr); 308 309 kfree(htt->rx_ring.netbufs_ring); 310 } 311 312 static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt) 313 { 314 struct ath10k *ar = htt->ar; 315 int idx; 316 struct sk_buff *msdu; 317 318 lockdep_assert_held(&htt->rx_ring.lock); 319 320 if (htt->rx_ring.fill_cnt == 0) { 321 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n"); 322 return NULL; 323 } 324 325 idx = htt->rx_ring.sw_rd_idx.msdu_payld; 326 msdu = htt->rx_ring.netbufs_ring[idx]; 327 htt->rx_ring.netbufs_ring[idx] = NULL; 328 ath10k_htt_reset_paddrs_ring(htt, idx); 329 330 idx++; 331 idx &= htt->rx_ring.size_mask; 332 htt->rx_ring.sw_rd_idx.msdu_payld = idx; 333 htt->rx_ring.fill_cnt--; 334 335 dma_unmap_single(htt->ar->dev, 336 ATH10K_SKB_RXCB(msdu)->paddr, 337 msdu->len + skb_tailroom(msdu), 338 DMA_FROM_DEVICE); 339 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 340 msdu->data, msdu->len + skb_tailroom(msdu)); 341 342 return msdu; 343 } 344 345 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */ 346 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt, 347 struct sk_buff_head *amsdu) 348 { 349 struct ath10k *ar = htt->ar; 350 struct ath10k_hw_params *hw = &ar->hw_params; 351 int msdu_len, msdu_chaining = 0; 352 struct sk_buff *msdu; 353 struct htt_rx_desc *rx_desc; 354 struct rx_attention *rx_desc_attention; 355 struct rx_frag_info_common *rx_desc_frag_info_common; 356 struct rx_msdu_start_common *rx_desc_msdu_start_common; 357 struct rx_msdu_end_common *rx_desc_msdu_end_common; 358 359 lockdep_assert_held(&htt->rx_ring.lock); 360 361 for (;;) { 362 int last_msdu, msdu_len_invalid, msdu_chained; 363 364 msdu = ath10k_htt_rx_netbuf_pop(htt); 365 if (!msdu) { 366 __skb_queue_purge(amsdu); 367 return -ENOENT; 368 } 369 370 __skb_queue_tail(amsdu, msdu); 371 372 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 373 rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc); 374 rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, 375 rx_desc); 376 rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc); 377 rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc); 378 379 /* FIXME: we must report msdu payload since this is what caller 380 * expects now 381 */ 382 skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 383 skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 384 385 /* 386 * Sanity check - confirm the HW is finished filling in the 387 * rx data. 388 * If the HW and SW are working correctly, then it's guaranteed 389 * that the HW's MAC DMA is done before this point in the SW. 390 * To prevent the case that we handle a stale Rx descriptor, 391 * just assert for now until we have a way to recover. 392 */ 393 if (!(__le32_to_cpu(rx_desc_attention->flags) 394 & RX_ATTENTION_FLAGS_MSDU_DONE)) { 395 __skb_queue_purge(amsdu); 396 return -EIO; 397 } 398 399 msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags) 400 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR | 401 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR)); 402 msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0), 403 RX_MSDU_START_INFO0_MSDU_LENGTH); 404 msdu_chained = rx_desc_frag_info_common->ring2_more_count; 405 406 if (msdu_len_invalid) 407 msdu_len = 0; 408 409 skb_trim(msdu, 0); 410 skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw))); 411 msdu_len -= msdu->len; 412 413 /* Note: Chained buffers do not contain rx descriptor */ 414 while (msdu_chained--) { 415 msdu = ath10k_htt_rx_netbuf_pop(htt); 416 if (!msdu) { 417 __skb_queue_purge(amsdu); 418 return -ENOENT; 419 } 420 421 __skb_queue_tail(amsdu, msdu); 422 skb_trim(msdu, 0); 423 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE)); 424 msdu_len -= msdu->len; 425 msdu_chaining = 1; 426 } 427 428 last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) & 429 RX_MSDU_END_INFO0_LAST_MSDU; 430 431 /* FIXME: why are we skipping the first part of the rx_desc? */ 432 trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32), 433 hw->rx_desc_ops->rx_desc_size - sizeof(u32)); 434 435 if (last_msdu) 436 break; 437 } 438 439 if (skb_queue_empty(amsdu)) 440 msdu_chaining = -1; 441 442 /* 443 * Don't refill the ring yet. 444 * 445 * First, the elements popped here are still in use - it is not 446 * safe to overwrite them until the matching call to 447 * mpdu_desc_list_next. Second, for efficiency it is preferable to 448 * refill the rx ring with 1 PPDU's worth of rx buffers (something 449 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers 450 * (something like 3 buffers). Consequently, we'll rely on the txrx 451 * SW to tell us when it is done pulling all the PPDU's rx buffers 452 * out of the rx ring, and then refill it just once. 453 */ 454 455 return msdu_chaining; 456 } 457 458 static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt, 459 u64 paddr) 460 { 461 struct ath10k *ar = htt->ar; 462 struct ath10k_skb_rxcb *rxcb; 463 struct sk_buff *msdu; 464 465 lockdep_assert_held(&htt->rx_ring.lock); 466 467 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr); 468 if (!msdu) 469 return NULL; 470 471 rxcb = ATH10K_SKB_RXCB(msdu); 472 hash_del(&rxcb->hlist); 473 htt->rx_ring.fill_cnt--; 474 475 dma_unmap_single(htt->ar->dev, rxcb->paddr, 476 msdu->len + skb_tailroom(msdu), 477 DMA_FROM_DEVICE); 478 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 479 msdu->data, msdu->len + skb_tailroom(msdu)); 480 481 return msdu; 482 } 483 484 static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head, 485 struct sk_buff *frag_list, 486 unsigned int frag_len) 487 { 488 skb_shinfo(skb_head)->frag_list = frag_list; 489 skb_head->data_len = frag_len; 490 skb_head->len += skb_head->data_len; 491 } 492 493 static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt, 494 struct sk_buff *msdu, 495 struct htt_rx_in_ord_msdu_desc **msdu_desc) 496 { 497 struct ath10k *ar = htt->ar; 498 struct ath10k_hw_params *hw = &ar->hw_params; 499 u32 paddr; 500 struct sk_buff *frag_buf; 501 struct sk_buff *prev_frag_buf; 502 u8 last_frag; 503 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc; 504 struct htt_rx_desc *rxd; 505 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 506 507 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 508 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 509 510 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 511 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 512 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 513 amsdu_len -= msdu->len; 514 515 last_frag = ind_desc->reserved; 516 if (last_frag) { 517 if (amsdu_len) { 518 ath10k_warn(ar, "invalid amsdu len %u, left %d", 519 __le16_to_cpu(ind_desc->msdu_len), 520 amsdu_len); 521 } 522 return 0; 523 } 524 525 ind_desc++; 526 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 527 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 528 if (!frag_buf) { 529 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr); 530 return -ENOENT; 531 } 532 533 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 534 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 535 536 amsdu_len -= frag_buf->len; 537 prev_frag_buf = frag_buf; 538 last_frag = ind_desc->reserved; 539 while (!last_frag) { 540 ind_desc++; 541 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 542 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 543 if (!frag_buf) { 544 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x", 545 paddr); 546 prev_frag_buf->next = NULL; 547 return -ENOENT; 548 } 549 550 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 551 last_frag = ind_desc->reserved; 552 amsdu_len -= frag_buf->len; 553 554 prev_frag_buf->next = frag_buf; 555 prev_frag_buf = frag_buf; 556 } 557 558 if (amsdu_len) { 559 ath10k_warn(ar, "invalid amsdu len %u, left %d", 560 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 561 } 562 563 *msdu_desc = ind_desc; 564 565 prev_frag_buf->next = NULL; 566 return 0; 567 } 568 569 static int 570 ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt, 571 struct sk_buff *msdu, 572 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc) 573 { 574 struct ath10k *ar = htt->ar; 575 struct ath10k_hw_params *hw = &ar->hw_params; 576 u64 paddr; 577 struct sk_buff *frag_buf; 578 struct sk_buff *prev_frag_buf; 579 u8 last_frag; 580 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc; 581 struct htt_rx_desc *rxd; 582 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 583 584 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 585 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 586 587 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 588 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 589 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 590 amsdu_len -= msdu->len; 591 592 last_frag = ind_desc->reserved; 593 if (last_frag) { 594 if (amsdu_len) { 595 ath10k_warn(ar, "invalid amsdu len %u, left %d", 596 __le16_to_cpu(ind_desc->msdu_len), 597 amsdu_len); 598 } 599 return 0; 600 } 601 602 ind_desc++; 603 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 604 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 605 if (!frag_buf) { 606 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr); 607 return -ENOENT; 608 } 609 610 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 611 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 612 613 amsdu_len -= frag_buf->len; 614 prev_frag_buf = frag_buf; 615 last_frag = ind_desc->reserved; 616 while (!last_frag) { 617 ind_desc++; 618 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 619 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 620 if (!frag_buf) { 621 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx", 622 paddr); 623 prev_frag_buf->next = NULL; 624 return -ENOENT; 625 } 626 627 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 628 last_frag = ind_desc->reserved; 629 amsdu_len -= frag_buf->len; 630 631 prev_frag_buf->next = frag_buf; 632 prev_frag_buf = frag_buf; 633 } 634 635 if (amsdu_len) { 636 ath10k_warn(ar, "invalid amsdu len %u, left %d", 637 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 638 } 639 640 *msdu_desc = ind_desc; 641 642 prev_frag_buf->next = NULL; 643 return 0; 644 } 645 646 static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt, 647 struct htt_rx_in_ord_ind *ev, 648 struct sk_buff_head *list) 649 { 650 struct ath10k *ar = htt->ar; 651 struct ath10k_hw_params *hw = &ar->hw_params; 652 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32; 653 struct htt_rx_desc *rxd; 654 struct rx_attention *rxd_attention; 655 struct sk_buff *msdu; 656 int msdu_count, ret; 657 bool is_offload; 658 u32 paddr; 659 660 lockdep_assert_held(&htt->rx_ring.lock); 661 662 msdu_count = __le16_to_cpu(ev->msdu_count); 663 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 664 665 while (msdu_count--) { 666 paddr = __le32_to_cpu(msdu_desc->msdu_paddr); 667 668 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 669 if (!msdu) { 670 __skb_queue_purge(list); 671 return -ENOENT; 672 } 673 674 if (!is_offload && ar->monitor_arvif) { 675 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu, 676 &msdu_desc); 677 if (ret) { 678 __skb_queue_purge(list); 679 return ret; 680 } 681 __skb_queue_tail(list, msdu); 682 msdu_desc++; 683 continue; 684 } 685 686 __skb_queue_tail(list, msdu); 687 688 if (!is_offload) { 689 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 690 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 691 692 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 693 694 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 695 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 696 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 697 698 if (!(__le32_to_cpu(rxd_attention->flags) & 699 RX_ATTENTION_FLAGS_MSDU_DONE)) { 700 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 701 return -EIO; 702 } 703 } 704 705 msdu_desc++; 706 } 707 708 return 0; 709 } 710 711 static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt, 712 struct htt_rx_in_ord_ind *ev, 713 struct sk_buff_head *list) 714 { 715 struct ath10k *ar = htt->ar; 716 struct ath10k_hw_params *hw = &ar->hw_params; 717 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64; 718 struct htt_rx_desc *rxd; 719 struct rx_attention *rxd_attention; 720 struct sk_buff *msdu; 721 int msdu_count, ret; 722 bool is_offload; 723 u64 paddr; 724 725 lockdep_assert_held(&htt->rx_ring.lock); 726 727 msdu_count = __le16_to_cpu(ev->msdu_count); 728 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 729 730 while (msdu_count--) { 731 paddr = __le64_to_cpu(msdu_desc->msdu_paddr); 732 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 733 if (!msdu) { 734 __skb_queue_purge(list); 735 return -ENOENT; 736 } 737 738 if (!is_offload && ar->monitor_arvif) { 739 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu, 740 &msdu_desc); 741 if (ret) { 742 __skb_queue_purge(list); 743 return ret; 744 } 745 __skb_queue_tail(list, msdu); 746 msdu_desc++; 747 continue; 748 } 749 750 __skb_queue_tail(list, msdu); 751 752 if (!is_offload) { 753 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 754 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 755 756 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 757 758 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 759 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 760 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 761 762 if (!(__le32_to_cpu(rxd_attention->flags) & 763 RX_ATTENTION_FLAGS_MSDU_DONE)) { 764 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 765 return -EIO; 766 } 767 } 768 769 msdu_desc++; 770 } 771 772 return 0; 773 } 774 775 int ath10k_htt_rx_alloc(struct ath10k_htt *htt) 776 { 777 struct ath10k *ar = htt->ar; 778 dma_addr_t paddr; 779 void *vaddr, *vaddr_ring; 780 size_t size; 781 struct timer_list *timer = &htt->rx_ring.refill_retry_timer; 782 783 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 784 return 0; 785 786 htt->rx_confused = false; 787 788 /* XXX: The fill level could be changed during runtime in response to 789 * the host processing latency. Is this really worth it? 790 */ 791 htt->rx_ring.size = HTT_RX_RING_SIZE; 792 htt->rx_ring.size_mask = htt->rx_ring.size - 1; 793 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level; 794 795 if (!is_power_of_2(htt->rx_ring.size)) { 796 ath10k_warn(ar, "htt rx ring size is not power of 2\n"); 797 return -EINVAL; 798 } 799 800 htt->rx_ring.netbufs_ring = 801 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *), 802 GFP_KERNEL); 803 if (!htt->rx_ring.netbufs_ring) 804 goto err_netbuf; 805 806 size = ath10k_htt_get_rx_ring_size(htt); 807 808 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL); 809 if (!vaddr_ring) 810 goto err_dma_ring; 811 812 ath10k_htt_config_paddrs_ring(htt, vaddr_ring); 813 htt->rx_ring.base_paddr = paddr; 814 815 vaddr = dma_alloc_coherent(htt->ar->dev, 816 sizeof(*htt->rx_ring.alloc_idx.vaddr), 817 &paddr, GFP_KERNEL); 818 if (!vaddr) 819 goto err_dma_idx; 820 821 htt->rx_ring.alloc_idx.vaddr = vaddr; 822 htt->rx_ring.alloc_idx.paddr = paddr; 823 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask; 824 *htt->rx_ring.alloc_idx.vaddr = 0; 825 826 /* Initialize the Rx refill retry timer */ 827 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0); 828 829 spin_lock_init(&htt->rx_ring.lock); 830 831 htt->rx_ring.fill_cnt = 0; 832 htt->rx_ring.sw_rd_idx.msdu_payld = 0; 833 hash_init(htt->rx_ring.skb_table); 834 835 skb_queue_head_init(&htt->rx_msdus_q); 836 skb_queue_head_init(&htt->rx_in_ord_compl_q); 837 skb_queue_head_init(&htt->tx_fetch_ind_q); 838 atomic_set(&htt->num_mpdus_ready, 0); 839 840 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n", 841 htt->rx_ring.size, htt->rx_ring.fill_level); 842 return 0; 843 844 err_dma_idx: 845 dma_free_coherent(htt->ar->dev, 846 ath10k_htt_get_rx_ring_size(htt), 847 vaddr_ring, 848 htt->rx_ring.base_paddr); 849 err_dma_ring: 850 kfree(htt->rx_ring.netbufs_ring); 851 err_netbuf: 852 return -ENOMEM; 853 } 854 855 static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar, 856 enum htt_rx_mpdu_encrypt_type type) 857 { 858 switch (type) { 859 case HTT_RX_MPDU_ENCRYPT_NONE: 860 return 0; 861 case HTT_RX_MPDU_ENCRYPT_WEP40: 862 case HTT_RX_MPDU_ENCRYPT_WEP104: 863 return IEEE80211_WEP_IV_LEN; 864 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 865 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 866 return IEEE80211_TKIP_IV_LEN; 867 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 868 return IEEE80211_CCMP_HDR_LEN; 869 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 870 return IEEE80211_CCMP_256_HDR_LEN; 871 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 872 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 873 return IEEE80211_GCMP_HDR_LEN; 874 case HTT_RX_MPDU_ENCRYPT_WEP128: 875 case HTT_RX_MPDU_ENCRYPT_WAPI: 876 break; 877 } 878 879 ath10k_warn(ar, "unsupported encryption type %d\n", type); 880 return 0; 881 } 882 883 #define MICHAEL_MIC_LEN 8 884 885 static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar, 886 enum htt_rx_mpdu_encrypt_type type) 887 { 888 switch (type) { 889 case HTT_RX_MPDU_ENCRYPT_NONE: 890 case HTT_RX_MPDU_ENCRYPT_WEP40: 891 case HTT_RX_MPDU_ENCRYPT_WEP104: 892 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 893 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 894 return 0; 895 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 896 return IEEE80211_CCMP_MIC_LEN; 897 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 898 return IEEE80211_CCMP_256_MIC_LEN; 899 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 900 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 901 return IEEE80211_GCMP_MIC_LEN; 902 case HTT_RX_MPDU_ENCRYPT_WEP128: 903 case HTT_RX_MPDU_ENCRYPT_WAPI: 904 break; 905 } 906 907 ath10k_warn(ar, "unsupported encryption type %d\n", type); 908 return 0; 909 } 910 911 static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar, 912 enum htt_rx_mpdu_encrypt_type type) 913 { 914 switch (type) { 915 case HTT_RX_MPDU_ENCRYPT_NONE: 916 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 917 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 918 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 919 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 920 return 0; 921 case HTT_RX_MPDU_ENCRYPT_WEP40: 922 case HTT_RX_MPDU_ENCRYPT_WEP104: 923 return IEEE80211_WEP_ICV_LEN; 924 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 925 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 926 return IEEE80211_TKIP_ICV_LEN; 927 case HTT_RX_MPDU_ENCRYPT_WEP128: 928 case HTT_RX_MPDU_ENCRYPT_WAPI: 929 break; 930 } 931 932 ath10k_warn(ar, "unsupported encryption type %d\n", type); 933 return 0; 934 } 935 936 struct amsdu_subframe_hdr { 937 u8 dst[ETH_ALEN]; 938 u8 src[ETH_ALEN]; 939 __be16 len; 940 } __packed; 941 942 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63) 943 944 static inline u8 ath10k_bw_to_mac80211_bw(u8 bw) 945 { 946 u8 ret = 0; 947 948 switch (bw) { 949 case 0: 950 ret = RATE_INFO_BW_20; 951 break; 952 case 1: 953 ret = RATE_INFO_BW_40; 954 break; 955 case 2: 956 ret = RATE_INFO_BW_80; 957 break; 958 case 3: 959 ret = RATE_INFO_BW_160; 960 break; 961 } 962 963 return ret; 964 } 965 966 static void ath10k_htt_rx_h_rates(struct ath10k *ar, 967 struct ieee80211_rx_status *status, 968 struct htt_rx_desc *rxd) 969 { 970 struct ath10k_hw_params *hw = &ar->hw_params; 971 struct rx_attention *rxd_attention; 972 struct rx_mpdu_start *rxd_mpdu_start; 973 struct rx_mpdu_end *rxd_mpdu_end; 974 struct rx_msdu_start_common *rxd_msdu_start_common; 975 struct rx_msdu_end_common *rxd_msdu_end_common; 976 struct rx_ppdu_start *rxd_ppdu_start; 977 struct ieee80211_supported_band *sband; 978 u8 cck, rate, bw, sgi, mcs, nss; 979 u8 *rxd_msdu_payload; 980 u8 preamble = 0; 981 u8 group_id; 982 u32 info1, info2, info3; 983 u32 stbc, nsts_su; 984 985 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 986 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 987 rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd); 988 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 989 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 990 rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 991 rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd); 992 993 info1 = __le32_to_cpu(rxd_ppdu_start->info1); 994 info2 = __le32_to_cpu(rxd_ppdu_start->info2); 995 info3 = __le32_to_cpu(rxd_ppdu_start->info3); 996 997 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE); 998 999 switch (preamble) { 1000 case HTT_RX_LEGACY: 1001 /* To get legacy rate index band is required. Since band can't 1002 * be undefined check if freq is non-zero. 1003 */ 1004 if (!status->freq) 1005 return; 1006 1007 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT; 1008 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE); 1009 rate &= ~RX_PPDU_START_RATE_FLAG; 1010 1011 sband = &ar->mac.sbands[status->band]; 1012 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck); 1013 break; 1014 case HTT_RX_HT: 1015 case HTT_RX_HT_WITH_TXBF: 1016 /* HT-SIG - Table 20-11 in info2 and info3 */ 1017 mcs = info2 & 0x1F; 1018 nss = mcs >> 3; 1019 bw = (info2 >> 7) & 1; 1020 sgi = (info3 >> 7) & 1; 1021 1022 status->rate_idx = mcs; 1023 status->encoding = RX_ENC_HT; 1024 if (sgi) 1025 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1026 if (bw) 1027 status->bw = RATE_INFO_BW_40; 1028 break; 1029 case HTT_RX_VHT: 1030 case HTT_RX_VHT_WITH_TXBF: 1031 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3 1032 * TODO check this 1033 */ 1034 bw = info2 & 3; 1035 sgi = info3 & 1; 1036 stbc = (info2 >> 3) & 1; 1037 group_id = (info2 >> 4) & 0x3F; 1038 1039 if (GROUP_ID_IS_SU_MIMO(group_id)) { 1040 mcs = (info3 >> 4) & 0x0F; 1041 nsts_su = ((info2 >> 10) & 0x07); 1042 if (stbc) 1043 nss = (nsts_su >> 2) + 1; 1044 else 1045 nss = (nsts_su + 1); 1046 } else { 1047 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor 1048 * so it's impossible to decode MCS. Also since 1049 * firmware consumes Group Id Management frames host 1050 * has no knowledge regarding group/user position 1051 * mapping so it's impossible to pick the correct Nsts 1052 * from VHT-SIG-A1. 1053 * 1054 * Bandwidth and SGI are valid so report the rateinfo 1055 * on best-effort basis. 1056 */ 1057 mcs = 0; 1058 nss = 1; 1059 } 1060 1061 if (mcs > 0x09) { 1062 ath10k_warn(ar, "invalid MCS received %u\n", mcs); 1063 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n", 1064 __le32_to_cpu(rxd_attention->flags), 1065 __le32_to_cpu(rxd_mpdu_start->info0), 1066 __le32_to_cpu(rxd_mpdu_start->info1), 1067 __le32_to_cpu(rxd_msdu_start_common->info0), 1068 __le32_to_cpu(rxd_msdu_start_common->info1), 1069 rxd_ppdu_start->info0, 1070 __le32_to_cpu(rxd_ppdu_start->info1), 1071 __le32_to_cpu(rxd_ppdu_start->info2), 1072 __le32_to_cpu(rxd_ppdu_start->info3), 1073 __le32_to_cpu(rxd_ppdu_start->info4)); 1074 1075 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n", 1076 __le32_to_cpu(rxd_msdu_end_common->info0), 1077 __le32_to_cpu(rxd_mpdu_end->info0)); 1078 1079 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, 1080 "rx desc msdu payload: ", 1081 rxd_msdu_payload, 50); 1082 } 1083 1084 status->rate_idx = mcs; 1085 status->nss = nss; 1086 1087 if (sgi) 1088 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1089 1090 status->bw = ath10k_bw_to_mac80211_bw(bw); 1091 status->encoding = RX_ENC_VHT; 1092 break; 1093 default: 1094 break; 1095 } 1096 } 1097 1098 static struct ieee80211_channel * 1099 ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) 1100 { 1101 struct ath10k_hw_params *hw = &ar->hw_params; 1102 struct rx_attention *rxd_attention; 1103 struct rx_msdu_end_common *rxd_msdu_end_common; 1104 struct rx_mpdu_start *rxd_mpdu_start; 1105 struct ath10k_peer *peer; 1106 struct ath10k_vif *arvif; 1107 struct cfg80211_chan_def def; 1108 u16 peer_id; 1109 1110 lockdep_assert_held(&ar->data_lock); 1111 1112 if (!rxd) 1113 return NULL; 1114 1115 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1116 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1117 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1118 1119 if (rxd_attention->flags & 1120 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) 1121 return NULL; 1122 1123 if (!(rxd_msdu_end_common->info0 & 1124 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) 1125 return NULL; 1126 1127 peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1128 RX_MPDU_START_INFO0_PEER_IDX); 1129 1130 peer = ath10k_peer_find_by_id(ar, peer_id); 1131 if (!peer) 1132 return NULL; 1133 1134 arvif = ath10k_get_arvif(ar, peer->vdev_id); 1135 if (WARN_ON_ONCE(!arvif)) 1136 return NULL; 1137 1138 if (ath10k_mac_vif_chan(arvif->vif, &def)) 1139 return NULL; 1140 1141 return def.chan; 1142 } 1143 1144 static struct ieee80211_channel * 1145 ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) 1146 { 1147 struct ath10k_vif *arvif; 1148 struct cfg80211_chan_def def; 1149 1150 lockdep_assert_held(&ar->data_lock); 1151 1152 list_for_each_entry(arvif, &ar->arvifs, list) { 1153 if (arvif->vdev_id == vdev_id && 1154 ath10k_mac_vif_chan(arvif->vif, &def) == 0) 1155 return def.chan; 1156 } 1157 1158 return NULL; 1159 } 1160 1161 static void 1162 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, 1163 struct ieee80211_chanctx_conf *conf, 1164 void *data) 1165 { 1166 struct cfg80211_chan_def *def = data; 1167 1168 *def = conf->def; 1169 } 1170 1171 static struct ieee80211_channel * 1172 ath10k_htt_rx_h_any_channel(struct ath10k *ar) 1173 { 1174 struct cfg80211_chan_def def = {}; 1175 1176 ieee80211_iter_chan_contexts_atomic(ar->hw, 1177 ath10k_htt_rx_h_any_chan_iter, 1178 &def); 1179 1180 return def.chan; 1181 } 1182 1183 static bool ath10k_htt_rx_h_channel(struct ath10k *ar, 1184 struct ieee80211_rx_status *status, 1185 struct htt_rx_desc *rxd, 1186 u32 vdev_id) 1187 { 1188 struct ieee80211_channel *ch; 1189 1190 spin_lock_bh(&ar->data_lock); 1191 ch = ar->scan_channel; 1192 if (!ch) 1193 ch = ar->rx_channel; 1194 if (!ch) 1195 ch = ath10k_htt_rx_h_peer_channel(ar, rxd); 1196 if (!ch) 1197 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); 1198 if (!ch) 1199 ch = ath10k_htt_rx_h_any_channel(ar); 1200 if (!ch) 1201 ch = ar->tgt_oper_chan; 1202 spin_unlock_bh(&ar->data_lock); 1203 1204 if (!ch) 1205 return false; 1206 1207 status->band = ch->band; 1208 status->freq = ch->center_freq; 1209 1210 return true; 1211 } 1212 1213 static void ath10k_htt_rx_h_signal(struct ath10k *ar, 1214 struct ieee80211_rx_status *status, 1215 struct htt_rx_desc *rxd) 1216 { 1217 struct ath10k_hw_params *hw = &ar->hw_params; 1218 struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 1219 int i; 1220 1221 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) { 1222 status->chains &= ~BIT(i); 1223 1224 if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) { 1225 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR + 1226 rxd_ppdu_start->rssi_chains[i].pri20_mhz; 1227 1228 status->chains |= BIT(i); 1229 } 1230 } 1231 1232 /* FIXME: Get real NF */ 1233 status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 1234 rxd_ppdu_start->rssi_comb; 1235 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 1236 } 1237 1238 static void ath10k_htt_rx_h_mactime(struct ath10k *ar, 1239 struct ieee80211_rx_status *status, 1240 struct htt_rx_desc *rxd) 1241 { 1242 struct ath10k_hw_params *hw = &ar->hw_params; 1243 struct rx_ppdu_end_common *rxd_ppdu_end_common; 1244 1245 rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd); 1246 1247 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This 1248 * means all prior MSDUs in a PPDU are reported to mac80211 without the 1249 * TSF. Is it worth holding frames until end of PPDU is known? 1250 * 1251 * FIXME: Can we get/compute 64bit TSF? 1252 */ 1253 status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp); 1254 status->flag |= RX_FLAG_MACTIME_END; 1255 } 1256 1257 static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, 1258 struct sk_buff_head *amsdu, 1259 struct ieee80211_rx_status *status, 1260 u32 vdev_id) 1261 { 1262 struct sk_buff *first; 1263 struct ath10k_hw_params *hw = &ar->hw_params; 1264 struct htt_rx_desc *rxd; 1265 struct rx_attention *rxd_attention; 1266 bool is_first_ppdu; 1267 bool is_last_ppdu; 1268 1269 if (skb_queue_empty(amsdu)) 1270 return; 1271 1272 first = skb_peek(amsdu); 1273 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1274 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1275 1276 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1277 1278 is_first_ppdu = !!(rxd_attention->flags & 1279 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU)); 1280 is_last_ppdu = !!(rxd_attention->flags & 1281 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU)); 1282 1283 if (is_first_ppdu) { 1284 /* New PPDU starts so clear out the old per-PPDU status. */ 1285 status->freq = 0; 1286 status->rate_idx = 0; 1287 status->nss = 0; 1288 status->encoding = RX_ENC_LEGACY; 1289 status->bw = RATE_INFO_BW_20; 1290 1291 status->flag &= ~RX_FLAG_MACTIME_END; 1292 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 1293 1294 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST); 1295 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; 1296 status->ampdu_reference = ar->ampdu_reference; 1297 1298 ath10k_htt_rx_h_signal(ar, status, rxd); 1299 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); 1300 ath10k_htt_rx_h_rates(ar, status, rxd); 1301 } 1302 1303 if (is_last_ppdu) { 1304 ath10k_htt_rx_h_mactime(ar, status, rxd); 1305 1306 /* set ampdu last segment flag */ 1307 status->flag |= RX_FLAG_AMPDU_IS_LAST; 1308 ar->ampdu_reference++; 1309 } 1310 } 1311 1312 static const char * const tid_to_ac[] = { 1313 "BE", 1314 "BK", 1315 "BK", 1316 "BE", 1317 "VI", 1318 "VI", 1319 "VO", 1320 "VO", 1321 }; 1322 1323 static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) 1324 { 1325 u8 *qc; 1326 int tid; 1327 1328 if (!ieee80211_is_data_qos(hdr->frame_control)) 1329 return ""; 1330 1331 qc = ieee80211_get_qos_ctl(hdr); 1332 tid = *qc & IEEE80211_QOS_CTL_TID_MASK; 1333 if (tid < 8) 1334 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]); 1335 else 1336 snprintf(out, size, "tid %d", tid); 1337 1338 return out; 1339 } 1340 1341 static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar, 1342 struct ieee80211_rx_status *rx_status, 1343 struct sk_buff *skb) 1344 { 1345 struct ieee80211_rx_status *status; 1346 1347 status = IEEE80211_SKB_RXCB(skb); 1348 *status = *rx_status; 1349 1350 skb_queue_tail(&ar->htt.rx_msdus_q, skb); 1351 } 1352 1353 static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb) 1354 { 1355 struct ieee80211_rx_status *status; 1356 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 1357 char tid[32]; 1358 1359 status = IEEE80211_SKB_RXCB(skb); 1360 1361 if (!(ar->filter_flags & FIF_FCSFAIL) && 1362 status->flag & RX_FLAG_FAILED_FCS_CRC) { 1363 ar->stats.rx_crc_err_drop++; 1364 dev_kfree_skb_any(skb); 1365 return; 1366 } 1367 1368 ath10k_dbg(ar, ATH10K_DBG_DATA, 1369 "rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n", 1370 skb, 1371 skb->len, 1372 ieee80211_get_SA(hdr), 1373 ath10k_get_tid(hdr, tid, sizeof(tid)), 1374 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ? 1375 "mcast" : "ucast", 1376 (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4, 1377 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "", 1378 (status->encoding == RX_ENC_HT) ? "ht" : "", 1379 (status->encoding == RX_ENC_VHT) ? "vht" : "", 1380 (status->bw == RATE_INFO_BW_40) ? "40" : "", 1381 (status->bw == RATE_INFO_BW_80) ? "80" : "", 1382 (status->bw == RATE_INFO_BW_160) ? "160" : "", 1383 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "", 1384 status->rate_idx, 1385 status->nss, 1386 status->freq, 1387 status->band, status->flag, 1388 !!(status->flag & RX_FLAG_FAILED_FCS_CRC), 1389 !!(status->flag & RX_FLAG_MMIC_ERROR), 1390 !!(status->flag & RX_FLAG_AMSDU_MORE)); 1391 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ", 1392 skb->data, skb->len); 1393 trace_ath10k_rx_hdr(ar, skb->data, skb->len); 1394 trace_ath10k_rx_payload(ar, skb->data, skb->len); 1395 1396 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 1397 } 1398 1399 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar, 1400 struct ieee80211_hdr *hdr) 1401 { 1402 int len = ieee80211_hdrlen(hdr->frame_control); 1403 1404 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING, 1405 ar->running_fw->fw_file.fw_features)) 1406 len = round_up(len, 4); 1407 1408 return len; 1409 } 1410 1411 static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, 1412 struct sk_buff *msdu, 1413 struct ieee80211_rx_status *status, 1414 enum htt_rx_mpdu_encrypt_type enctype, 1415 bool is_decrypted, 1416 const u8 first_hdr[64]) 1417 { 1418 struct ieee80211_hdr *hdr; 1419 struct ath10k_hw_params *hw = &ar->hw_params; 1420 struct htt_rx_desc *rxd; 1421 struct rx_msdu_end_common *rxd_msdu_end_common; 1422 size_t hdr_len; 1423 size_t crypto_len; 1424 bool is_first; 1425 bool is_last; 1426 bool msdu_limit_err; 1427 int bytes_aligned = ar->hw_params.decap_align_bytes; 1428 u8 *qos; 1429 1430 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1431 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1432 1433 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1434 is_first = !!(rxd_msdu_end_common->info0 & 1435 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1436 is_last = !!(rxd_msdu_end_common->info0 & 1437 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1438 1439 /* Delivered decapped frame: 1440 * [802.11 header] 1441 * [crypto param] <-- can be trimmed if !fcs_err && 1442 * !decrypt_err && !peer_idx_invalid 1443 * [amsdu header] <-- only if A-MSDU 1444 * [rfc1042/llc] 1445 * [payload] 1446 * [FCS] <-- at end, needs to be trimmed 1447 */ 1448 1449 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when 1450 * deaggregate, so that unwanted MSDU-deaggregation is avoided for 1451 * error packets. If limit exceeds, hw sends all remaining MSDUs as 1452 * a single last MSDU with this msdu limit error set. 1453 */ 1454 msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd); 1455 1456 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU 1457 * without first MSDU is expected in that case, and handled later here. 1458 */ 1459 /* This probably shouldn't happen but warn just in case */ 1460 if (WARN_ON_ONCE(!is_first && !msdu_limit_err)) 1461 return; 1462 1463 /* This probably shouldn't happen but warn just in case */ 1464 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err)) 1465 return; 1466 1467 skb_trim(msdu, msdu->len - FCS_LEN); 1468 1469 /* Push original 80211 header */ 1470 if (unlikely(msdu_limit_err)) { 1471 hdr = (struct ieee80211_hdr *)first_hdr; 1472 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1473 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1474 1475 if (ieee80211_is_data_qos(hdr->frame_control)) { 1476 qos = ieee80211_get_qos_ctl(hdr); 1477 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1478 } 1479 1480 if (crypto_len) 1481 memcpy(skb_push(msdu, crypto_len), 1482 (void *)hdr + round_up(hdr_len, bytes_aligned), 1483 crypto_len); 1484 1485 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1486 } 1487 1488 /* In most cases this will be true for sniffed frames. It makes sense 1489 * to deliver them as-is without stripping the crypto param. This is 1490 * necessary for software based decryption. 1491 * 1492 * If there's no error then the frame is decrypted. At least that is 1493 * the case for frames that come in via fragmented rx indication. 1494 */ 1495 if (!is_decrypted) 1496 return; 1497 1498 /* The payload is decrypted so strip crypto params. Start from tail 1499 * since hdr is used to compute some stuff. 1500 */ 1501 1502 hdr = (void *)msdu->data; 1503 1504 /* Tail */ 1505 if (status->flag & RX_FLAG_IV_STRIPPED) { 1506 skb_trim(msdu, msdu->len - 1507 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1508 1509 skb_trim(msdu, msdu->len - 1510 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1511 } else { 1512 /* MIC */ 1513 if (status->flag & RX_FLAG_MIC_STRIPPED) 1514 skb_trim(msdu, msdu->len - 1515 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1516 1517 /* ICV */ 1518 if (status->flag & RX_FLAG_ICV_STRIPPED) 1519 skb_trim(msdu, msdu->len - 1520 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1521 } 1522 1523 /* MMIC */ 1524 if ((status->flag & RX_FLAG_MMIC_STRIPPED) && 1525 !ieee80211_has_morefrags(hdr->frame_control) && 1526 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 1527 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN); 1528 1529 /* Head */ 1530 if (status->flag & RX_FLAG_IV_STRIPPED) { 1531 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1532 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1533 1534 memmove((void *)msdu->data + crypto_len, 1535 (void *)msdu->data, hdr_len); 1536 skb_pull(msdu, crypto_len); 1537 } 1538 } 1539 1540 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar, 1541 struct sk_buff *msdu, 1542 struct ieee80211_rx_status *status, 1543 const u8 first_hdr[64], 1544 enum htt_rx_mpdu_encrypt_type enctype) 1545 { 1546 struct ath10k_hw_params *hw = &ar->hw_params; 1547 struct ieee80211_hdr *hdr; 1548 struct htt_rx_desc *rxd; 1549 size_t hdr_len; 1550 u8 da[ETH_ALEN]; 1551 u8 sa[ETH_ALEN]; 1552 int l3_pad_bytes; 1553 int bytes_aligned = ar->hw_params.decap_align_bytes; 1554 1555 /* Delivered decapped frame: 1556 * [nwifi 802.11 header] <-- replaced with 802.11 hdr 1557 * [rfc1042/llc] 1558 * 1559 * Note: The nwifi header doesn't have QoS Control and is 1560 * (always?) a 3addr frame. 1561 * 1562 * Note2: There's no A-MSDU subframe header. Even if it's part 1563 * of an A-MSDU. 1564 */ 1565 1566 /* pull decapped header and copy SA & DA */ 1567 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data - 1568 hw->rx_desc_ops->rx_desc_size); 1569 1570 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1571 skb_put(msdu, l3_pad_bytes); 1572 1573 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes); 1574 1575 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr); 1576 ether_addr_copy(da, ieee80211_get_DA(hdr)); 1577 ether_addr_copy(sa, ieee80211_get_SA(hdr)); 1578 skb_pull(msdu, hdr_len); 1579 1580 /* push original 802.11 header */ 1581 hdr = (struct ieee80211_hdr *)first_hdr; 1582 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1583 1584 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1585 memcpy(skb_push(msdu, 1586 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1587 (void *)hdr + round_up(hdr_len, bytes_aligned), 1588 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1589 } 1590 1591 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1592 1593 /* original 802.11 header has a different DA and in 1594 * case of 4addr it may also have different SA 1595 */ 1596 hdr = (struct ieee80211_hdr *)msdu->data; 1597 ether_addr_copy(ieee80211_get_DA(hdr), da); 1598 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1599 } 1600 1601 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar, 1602 struct sk_buff *msdu, 1603 enum htt_rx_mpdu_encrypt_type enctype) 1604 { 1605 struct ieee80211_hdr *hdr; 1606 struct ath10k_hw_params *hw = &ar->hw_params; 1607 struct htt_rx_desc *rxd; 1608 struct rx_msdu_end_common *rxd_msdu_end_common; 1609 u8 *rxd_rx_hdr_status; 1610 size_t hdr_len, crypto_len; 1611 void *rfc1042; 1612 bool is_first, is_last, is_amsdu; 1613 int bytes_aligned = ar->hw_params.decap_align_bytes; 1614 1615 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1616 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1617 1618 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1619 rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1620 hdr = (void *)rxd_rx_hdr_status; 1621 1622 is_first = !!(rxd_msdu_end_common->info0 & 1623 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1624 is_last = !!(rxd_msdu_end_common->info0 & 1625 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1626 is_amsdu = !(is_first && is_last); 1627 1628 rfc1042 = hdr; 1629 1630 if (is_first) { 1631 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1632 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1633 1634 rfc1042 += round_up(hdr_len, bytes_aligned) + 1635 round_up(crypto_len, bytes_aligned); 1636 } 1637 1638 if (is_amsdu) 1639 rfc1042 += sizeof(struct amsdu_subframe_hdr); 1640 1641 return rfc1042; 1642 } 1643 1644 static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar, 1645 struct sk_buff *msdu, 1646 struct ieee80211_rx_status *status, 1647 const u8 first_hdr[64], 1648 enum htt_rx_mpdu_encrypt_type enctype) 1649 { 1650 struct ath10k_hw_params *hw = &ar->hw_params; 1651 struct ieee80211_hdr *hdr; 1652 struct ethhdr *eth; 1653 size_t hdr_len; 1654 void *rfc1042; 1655 u8 da[ETH_ALEN]; 1656 u8 sa[ETH_ALEN]; 1657 int l3_pad_bytes; 1658 struct htt_rx_desc *rxd; 1659 int bytes_aligned = ar->hw_params.decap_align_bytes; 1660 1661 /* Delivered decapped frame: 1662 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc 1663 * [payload] 1664 */ 1665 1666 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype); 1667 if (WARN_ON_ONCE(!rfc1042)) 1668 return; 1669 1670 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1671 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1672 1673 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1674 skb_put(msdu, l3_pad_bytes); 1675 skb_pull(msdu, l3_pad_bytes); 1676 1677 /* pull decapped header and copy SA & DA */ 1678 eth = (struct ethhdr *)msdu->data; 1679 ether_addr_copy(da, eth->h_dest); 1680 ether_addr_copy(sa, eth->h_source); 1681 skb_pull(msdu, sizeof(struct ethhdr)); 1682 1683 /* push rfc1042/llc/snap */ 1684 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042, 1685 sizeof(struct rfc1042_hdr)); 1686 1687 /* push original 802.11 header */ 1688 hdr = (struct ieee80211_hdr *)first_hdr; 1689 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1690 1691 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1692 memcpy(skb_push(msdu, 1693 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1694 (void *)hdr + round_up(hdr_len, bytes_aligned), 1695 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1696 } 1697 1698 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1699 1700 /* original 802.11 header has a different DA and in 1701 * case of 4addr it may also have different SA 1702 */ 1703 hdr = (struct ieee80211_hdr *)msdu->data; 1704 ether_addr_copy(ieee80211_get_DA(hdr), da); 1705 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1706 } 1707 1708 static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar, 1709 struct sk_buff *msdu, 1710 struct ieee80211_rx_status *status, 1711 const u8 first_hdr[64], 1712 enum htt_rx_mpdu_encrypt_type enctype) 1713 { 1714 struct ath10k_hw_params *hw = &ar->hw_params; 1715 struct ieee80211_hdr *hdr; 1716 size_t hdr_len; 1717 int l3_pad_bytes; 1718 struct htt_rx_desc *rxd; 1719 int bytes_aligned = ar->hw_params.decap_align_bytes; 1720 1721 /* Delivered decapped frame: 1722 * [amsdu header] <-- replaced with 802.11 hdr 1723 * [rfc1042/llc] 1724 * [payload] 1725 */ 1726 1727 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1728 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1729 1730 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1731 1732 skb_put(msdu, l3_pad_bytes); 1733 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes); 1734 1735 hdr = (struct ieee80211_hdr *)first_hdr; 1736 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1737 1738 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1739 memcpy(skb_push(msdu, 1740 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1741 (void *)hdr + round_up(hdr_len, bytes_aligned), 1742 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1743 } 1744 1745 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1746 } 1747 1748 static void ath10k_htt_rx_h_undecap(struct ath10k *ar, 1749 struct sk_buff *msdu, 1750 struct ieee80211_rx_status *status, 1751 u8 first_hdr[64], 1752 enum htt_rx_mpdu_encrypt_type enctype, 1753 bool is_decrypted) 1754 { 1755 struct ath10k_hw_params *hw = &ar->hw_params; 1756 struct htt_rx_desc *rxd; 1757 struct rx_msdu_start_common *rxd_msdu_start_common; 1758 enum rx_msdu_decap_format decap; 1759 1760 /* First msdu's decapped header: 1761 * [802.11 header] <-- padded to 4 bytes long 1762 * [crypto param] <-- padded to 4 bytes long 1763 * [amsdu header] <-- only if A-MSDU 1764 * [rfc1042/llc] 1765 * 1766 * Other (2nd, 3rd, ..) msdu's decapped header: 1767 * [amsdu header] <-- only if A-MSDU 1768 * [rfc1042/llc] 1769 */ 1770 1771 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1772 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1773 1774 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1775 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 1776 RX_MSDU_START_INFO1_DECAP_FORMAT); 1777 1778 switch (decap) { 1779 case RX_MSDU_DECAP_RAW: 1780 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype, 1781 is_decrypted, first_hdr); 1782 break; 1783 case RX_MSDU_DECAP_NATIVE_WIFI: 1784 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr, 1785 enctype); 1786 break; 1787 case RX_MSDU_DECAP_ETHERNET2_DIX: 1788 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype); 1789 break; 1790 case RX_MSDU_DECAP_8023_SNAP_LLC: 1791 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr, 1792 enctype); 1793 break; 1794 } 1795 } 1796 1797 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb) 1798 { 1799 struct htt_rx_desc *rxd; 1800 struct rx_attention *rxd_attention; 1801 struct rx_msdu_start_common *rxd_msdu_start_common; 1802 u32 flags, info; 1803 bool is_ip4, is_ip6; 1804 bool is_tcp, is_udp; 1805 bool ip_csum_ok, tcpudp_csum_ok; 1806 1807 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1808 (void *)skb->data - hw->rx_desc_ops->rx_desc_size); 1809 1810 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1811 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1812 flags = __le32_to_cpu(rxd_attention->flags); 1813 info = __le32_to_cpu(rxd_msdu_start_common->info1); 1814 1815 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO); 1816 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO); 1817 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO); 1818 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO); 1819 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL); 1820 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL); 1821 1822 if (!is_ip4 && !is_ip6) 1823 return CHECKSUM_NONE; 1824 if (!is_tcp && !is_udp) 1825 return CHECKSUM_NONE; 1826 if (!ip_csum_ok) 1827 return CHECKSUM_NONE; 1828 if (!tcpudp_csum_ok) 1829 return CHECKSUM_NONE; 1830 1831 return CHECKSUM_UNNECESSARY; 1832 } 1833 1834 static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw, 1835 struct sk_buff *msdu) 1836 { 1837 msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu); 1838 } 1839 1840 static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, 1841 u16 offset, 1842 enum htt_rx_mpdu_encrypt_type enctype) 1843 { 1844 struct ieee80211_hdr *hdr; 1845 u64 pn = 0; 1846 u8 *ehdr; 1847 1848 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1849 ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control); 1850 1851 if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) { 1852 pn = ehdr[0]; 1853 pn |= (u64)ehdr[1] << 8; 1854 pn |= (u64)ehdr[4] << 16; 1855 pn |= (u64)ehdr[5] << 24; 1856 pn |= (u64)ehdr[6] << 32; 1857 pn |= (u64)ehdr[7] << 40; 1858 } 1859 return pn; 1860 } 1861 1862 static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, 1863 struct sk_buff *skb, 1864 u16 offset) 1865 { 1866 struct ieee80211_hdr *hdr; 1867 1868 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1869 return !is_multicast_ether_addr(hdr->addr1); 1870 } 1871 1872 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, 1873 struct sk_buff *skb, 1874 u16 peer_id, 1875 u16 offset, 1876 enum htt_rx_mpdu_encrypt_type enctype) 1877 { 1878 struct ath10k_peer *peer; 1879 union htt_rx_pn_t *last_pn, new_pn = {0}; 1880 struct ieee80211_hdr *hdr; 1881 u8 tid, frag_number; 1882 u32 seq; 1883 1884 peer = ath10k_peer_find_by_id(ar, peer_id); 1885 if (!peer) { 1886 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); 1887 return false; 1888 } 1889 1890 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1891 if (ieee80211_is_data_qos(hdr->frame_control)) 1892 tid = ieee80211_get_tid(hdr); 1893 else 1894 tid = ATH10K_TXRX_NON_QOS_TID; 1895 1896 last_pn = &peer->frag_tids_last_pn[tid]; 1897 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype); 1898 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; 1899 seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 1900 1901 if (frag_number == 0) { 1902 last_pn->pn48 = new_pn.pn48; 1903 peer->frag_tids_seq[tid] = seq; 1904 } else { 1905 if (seq != peer->frag_tids_seq[tid]) 1906 return false; 1907 1908 if (new_pn.pn48 != last_pn->pn48 + 1) 1909 return false; 1910 1911 last_pn->pn48 = new_pn.pn48; 1912 } 1913 1914 return true; 1915 } 1916 1917 static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 1918 struct sk_buff_head *amsdu, 1919 struct ieee80211_rx_status *status, 1920 bool fill_crypt_header, 1921 u8 *rx_hdr, 1922 enum ath10k_pkt_rx_err *err, 1923 u16 peer_id, 1924 bool frag) 1925 { 1926 struct sk_buff *first; 1927 struct sk_buff *last; 1928 struct sk_buff *msdu, *temp; 1929 struct ath10k_hw_params *hw = &ar->hw_params; 1930 struct htt_rx_desc *rxd; 1931 struct rx_attention *rxd_attention; 1932 struct rx_mpdu_start *rxd_mpdu_start; 1933 1934 struct ieee80211_hdr *hdr; 1935 enum htt_rx_mpdu_encrypt_type enctype; 1936 u8 first_hdr[64]; 1937 u8 *qos; 1938 bool has_fcs_err; 1939 bool has_crypto_err; 1940 bool has_tkip_err; 1941 bool has_peer_idx_invalid; 1942 bool is_decrypted; 1943 bool is_mgmt; 1944 u32 attention; 1945 bool frag_pn_check = true, multicast_check = true; 1946 1947 if (skb_queue_empty(amsdu)) 1948 return; 1949 1950 first = skb_peek(amsdu); 1951 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1952 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1953 1954 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1955 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1956 1957 is_mgmt = !!(rxd_attention->flags & 1958 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE)); 1959 1960 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1961 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 1962 1963 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11 1964 * decapped header. It'll be used for undecapping of each MSDU. 1965 */ 1966 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1967 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1968 1969 if (rx_hdr) 1970 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1971 1972 /* Each A-MSDU subframe will use the original header as the base and be 1973 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl. 1974 */ 1975 hdr = (void *)first_hdr; 1976 1977 if (ieee80211_is_data_qos(hdr->frame_control)) { 1978 qos = ieee80211_get_qos_ctl(hdr); 1979 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1980 } 1981 1982 /* Some attention flags are valid only in the last MSDU. */ 1983 last = skb_peek_tail(amsdu); 1984 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1985 (void *)last->data - hw->rx_desc_ops->rx_desc_size); 1986 1987 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1988 attention = __le32_to_cpu(rxd_attention->flags); 1989 1990 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR); 1991 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR); 1992 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR); 1993 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID); 1994 1995 /* Note: If hardware captures an encrypted frame that it can't decrypt, 1996 * e.g. due to fcs error, missing peer or invalid key data it will 1997 * report the frame as raw. 1998 */ 1999 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE && 2000 !has_fcs_err && 2001 !has_crypto_err && 2002 !has_peer_idx_invalid); 2003 2004 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */ 2005 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC | 2006 RX_FLAG_MMIC_ERROR | 2007 RX_FLAG_DECRYPTED | 2008 RX_FLAG_IV_STRIPPED | 2009 RX_FLAG_ONLY_MONITOR | 2010 RX_FLAG_MMIC_STRIPPED); 2011 2012 if (has_fcs_err) 2013 status->flag |= RX_FLAG_FAILED_FCS_CRC; 2014 2015 if (has_tkip_err) 2016 status->flag |= RX_FLAG_MMIC_ERROR; 2017 2018 if (err) { 2019 if (has_fcs_err) 2020 *err = ATH10K_PKT_RX_ERR_FCS; 2021 else if (has_tkip_err) 2022 *err = ATH10K_PKT_RX_ERR_TKIP; 2023 else if (has_crypto_err) 2024 *err = ATH10K_PKT_RX_ERR_CRYPT; 2025 else if (has_peer_idx_invalid) 2026 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL; 2027 } 2028 2029 /* Firmware reports all necessary management frames via WMI already. 2030 * They are not reported to monitor interfaces at all so pass the ones 2031 * coming via HTT to monitor interfaces instead. This simplifies 2032 * matters a lot. 2033 */ 2034 if (is_mgmt) 2035 status->flag |= RX_FLAG_ONLY_MONITOR; 2036 2037 if (is_decrypted) { 2038 status->flag |= RX_FLAG_DECRYPTED; 2039 2040 if (likely(!is_mgmt)) 2041 status->flag |= RX_FLAG_MMIC_STRIPPED; 2042 2043 if (fill_crypt_header) 2044 status->flag |= RX_FLAG_MIC_STRIPPED | 2045 RX_FLAG_ICV_STRIPPED; 2046 else 2047 status->flag |= RX_FLAG_IV_STRIPPED; 2048 } 2049 2050 skb_queue_walk(amsdu, msdu) { 2051 if (frag && !fill_crypt_header && is_decrypted && 2052 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) 2053 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar, 2054 msdu, 2055 peer_id, 2056 0, 2057 enctype); 2058 2059 if (frag) 2060 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, 2061 msdu, 2062 0); 2063 2064 if (!frag_pn_check || !multicast_check) { 2065 /* Discard the fragment with invalid PN or multicast DA 2066 */ 2067 temp = msdu->prev; 2068 __skb_unlink(msdu, amsdu); 2069 dev_kfree_skb_any(msdu); 2070 msdu = temp; 2071 frag_pn_check = true; 2072 multicast_check = true; 2073 continue; 2074 } 2075 2076 ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu); 2077 2078 if (frag && !fill_crypt_header && 2079 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2080 status->flag &= ~RX_FLAG_MMIC_STRIPPED; 2081 2082 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, 2083 is_decrypted); 2084 2085 /* Undecapping involves copying the original 802.11 header back 2086 * to sk_buff. If frame is protected and hardware has decrypted 2087 * it then remove the protected bit. 2088 */ 2089 if (!is_decrypted) 2090 continue; 2091 if (is_mgmt) 2092 continue; 2093 2094 if (fill_crypt_header) 2095 continue; 2096 2097 hdr = (void *)msdu->data; 2098 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2099 2100 if (frag && !fill_crypt_header && 2101 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2102 status->flag &= ~RX_FLAG_IV_STRIPPED & 2103 ~RX_FLAG_MMIC_STRIPPED; 2104 } 2105 } 2106 2107 static void ath10k_htt_rx_h_enqueue(struct ath10k *ar, 2108 struct sk_buff_head *amsdu, 2109 struct ieee80211_rx_status *status) 2110 { 2111 struct sk_buff *msdu; 2112 struct sk_buff *first_subframe; 2113 2114 first_subframe = skb_peek(amsdu); 2115 2116 while ((msdu = __skb_dequeue(amsdu))) { 2117 /* Setup per-MSDU flags */ 2118 if (skb_queue_empty(amsdu)) 2119 status->flag &= ~RX_FLAG_AMSDU_MORE; 2120 else 2121 status->flag |= RX_FLAG_AMSDU_MORE; 2122 2123 if (msdu == first_subframe) { 2124 first_subframe = NULL; 2125 status->flag &= ~RX_FLAG_ALLOW_SAME_PN; 2126 } else { 2127 status->flag |= RX_FLAG_ALLOW_SAME_PN; 2128 } 2129 2130 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 2131 } 2132 } 2133 2134 static int ath10k_unchain_msdu(struct sk_buff_head *amsdu, 2135 unsigned long *unchain_cnt) 2136 { 2137 struct sk_buff *skb, *first; 2138 int space; 2139 int total_len = 0; 2140 int amsdu_len = skb_queue_len(amsdu); 2141 2142 /* TODO: Might could optimize this by using 2143 * skb_try_coalesce or similar method to 2144 * decrease copying, or maybe get mac80211 to 2145 * provide a way to just receive a list of 2146 * skb? 2147 */ 2148 2149 first = __skb_dequeue(amsdu); 2150 2151 /* Allocate total length all at once. */ 2152 skb_queue_walk(amsdu, skb) 2153 total_len += skb->len; 2154 2155 space = total_len - skb_tailroom(first); 2156 if ((space > 0) && 2157 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) { 2158 /* TODO: bump some rx-oom error stat */ 2159 /* put it back together so we can free the 2160 * whole list at once. 2161 */ 2162 __skb_queue_head(amsdu, first); 2163 return -1; 2164 } 2165 2166 /* Walk list again, copying contents into 2167 * msdu_head 2168 */ 2169 while ((skb = __skb_dequeue(amsdu))) { 2170 skb_copy_from_linear_data(skb, skb_put(first, skb->len), 2171 skb->len); 2172 dev_kfree_skb_any(skb); 2173 } 2174 2175 __skb_queue_head(amsdu, first); 2176 2177 *unchain_cnt += amsdu_len - 1; 2178 2179 return 0; 2180 } 2181 2182 static void ath10k_htt_rx_h_unchain(struct ath10k *ar, 2183 struct sk_buff_head *amsdu, 2184 unsigned long *drop_cnt, 2185 unsigned long *unchain_cnt) 2186 { 2187 struct sk_buff *first; 2188 struct ath10k_hw_params *hw = &ar->hw_params; 2189 struct htt_rx_desc *rxd; 2190 struct rx_msdu_start_common *rxd_msdu_start_common; 2191 struct rx_frag_info_common *rxd_frag_info; 2192 enum rx_msdu_decap_format decap; 2193 2194 first = skb_peek(amsdu); 2195 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2196 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2197 2198 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 2199 rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd); 2200 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 2201 RX_MSDU_START_INFO1_DECAP_FORMAT); 2202 2203 /* FIXME: Current unchaining logic can only handle simple case of raw 2204 * msdu chaining. If decapping is other than raw the chaining may be 2205 * more complex and this isn't handled by the current code. Don't even 2206 * try re-constructing such frames - it'll be pretty much garbage. 2207 */ 2208 if (decap != RX_MSDU_DECAP_RAW || 2209 skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) { 2210 *drop_cnt += skb_queue_len(amsdu); 2211 __skb_queue_purge(amsdu); 2212 return; 2213 } 2214 2215 ath10k_unchain_msdu(amsdu, unchain_cnt); 2216 } 2217 2218 static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar, 2219 struct sk_buff_head *amsdu) 2220 { 2221 u8 *subframe_hdr; 2222 struct sk_buff *first; 2223 bool is_first, is_last; 2224 struct ath10k_hw_params *hw = &ar->hw_params; 2225 struct htt_rx_desc *rxd; 2226 struct rx_msdu_end_common *rxd_msdu_end_common; 2227 struct rx_mpdu_start *rxd_mpdu_start; 2228 struct ieee80211_hdr *hdr; 2229 size_t hdr_len, crypto_len; 2230 enum htt_rx_mpdu_encrypt_type enctype; 2231 int bytes_aligned = ar->hw_params.decap_align_bytes; 2232 2233 first = skb_peek(amsdu); 2234 2235 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2236 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2237 2238 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 2239 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 2240 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 2241 2242 is_first = !!(rxd_msdu_end_common->info0 & 2243 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 2244 is_last = !!(rxd_msdu_end_common->info0 & 2245 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 2246 2247 /* Return in case of non-aggregated msdu */ 2248 if (is_first && is_last) 2249 return true; 2250 2251 /* First msdu flag is not set for the first msdu of the list */ 2252 if (!is_first) 2253 return false; 2254 2255 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 2256 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 2257 2258 hdr_len = ieee80211_hdrlen(hdr->frame_control); 2259 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 2260 2261 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) + 2262 crypto_len; 2263 2264 /* Validate if the amsdu has a proper first subframe. 2265 * There are chances a single msdu can be received as amsdu when 2266 * the unauthenticated amsdu flag of a QoS header 2267 * gets flipped in non-SPP AMSDU's, in such cases the first 2268 * subframe has llc/snap header in place of a valid da. 2269 * return false if the da matches rfc1042 pattern 2270 */ 2271 if (ether_addr_equal(subframe_hdr, rfc1042_header)) 2272 return false; 2273 2274 return true; 2275 } 2276 2277 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar, 2278 struct sk_buff_head *amsdu, 2279 struct ieee80211_rx_status *rx_status) 2280 { 2281 if (!rx_status->freq) { 2282 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n"); 2283 return false; 2284 } 2285 2286 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) { 2287 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n"); 2288 return false; 2289 } 2290 2291 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) { 2292 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n"); 2293 return false; 2294 } 2295 2296 return true; 2297 } 2298 2299 static void ath10k_htt_rx_h_filter(struct ath10k *ar, 2300 struct sk_buff_head *amsdu, 2301 struct ieee80211_rx_status *rx_status, 2302 unsigned long *drop_cnt) 2303 { 2304 if (skb_queue_empty(amsdu)) 2305 return; 2306 2307 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status)) 2308 return; 2309 2310 if (drop_cnt) 2311 *drop_cnt += skb_queue_len(amsdu); 2312 2313 __skb_queue_purge(amsdu); 2314 } 2315 2316 static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) 2317 { 2318 struct ath10k *ar = htt->ar; 2319 struct ieee80211_rx_status *rx_status = &htt->rx_status; 2320 struct sk_buff_head amsdu; 2321 int ret; 2322 unsigned long drop_cnt = 0; 2323 unsigned long unchain_cnt = 0; 2324 unsigned long drop_cnt_filter = 0; 2325 unsigned long msdus_to_queue, num_msdus; 2326 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX; 2327 u8 first_hdr[RX_HTT_HDR_STATUS_LEN]; 2328 2329 __skb_queue_head_init(&amsdu); 2330 2331 spin_lock_bh(&htt->rx_ring.lock); 2332 if (htt->rx_confused) { 2333 spin_unlock_bh(&htt->rx_ring.lock); 2334 return -EIO; 2335 } 2336 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu); 2337 spin_unlock_bh(&htt->rx_ring.lock); 2338 2339 if (ret < 0) { 2340 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret); 2341 __skb_queue_purge(&amsdu); 2342 /* FIXME: It's probably a good idea to reboot the 2343 * device instead of leaving it inoperable. 2344 */ 2345 htt->rx_confused = true; 2346 return ret; 2347 } 2348 2349 num_msdus = skb_queue_len(&amsdu); 2350 2351 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); 2352 2353 /* only for ret = 1 indicates chained msdus */ 2354 if (ret > 0) 2355 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt); 2356 2357 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter); 2358 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0, 2359 false); 2360 msdus_to_queue = skb_queue_len(&amsdu); 2361 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); 2362 2363 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err, 2364 unchain_cnt, drop_cnt, drop_cnt_filter, 2365 msdus_to_queue); 2366 2367 return 0; 2368 } 2369 2370 static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc, 2371 union htt_rx_pn_t *pn, 2372 int pn_len_bits) 2373 { 2374 switch (pn_len_bits) { 2375 case 48: 2376 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) + 2377 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32); 2378 break; 2379 case 24: 2380 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0); 2381 break; 2382 } 2383 } 2384 2385 static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn, 2386 union htt_rx_pn_t *old_pn) 2387 { 2388 return ((new_pn->pn48 & 0xffffffffffffULL) <= 2389 (old_pn->pn48 & 0xffffffffffffULL)); 2390 } 2391 2392 static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar, 2393 struct ath10k_peer *peer, 2394 struct htt_rx_indication_hl *rx) 2395 { 2396 bool last_pn_valid, pn_invalid = false; 2397 enum htt_txrx_sec_cast_type sec_index; 2398 enum htt_security_types sec_type; 2399 union htt_rx_pn_t new_pn = {0}; 2400 struct htt_hl_rx_desc *rx_desc; 2401 union htt_rx_pn_t *last_pn; 2402 u32 rx_desc_info, tid; 2403 int num_mpdu_ranges; 2404 2405 lockdep_assert_held(&ar->data_lock); 2406 2407 if (!peer) 2408 return false; 2409 2410 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU)) 2411 return false; 2412 2413 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2414 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2415 2416 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2417 rx_desc_info = __le32_to_cpu(rx_desc->info); 2418 2419 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) 2420 return false; 2421 2422 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2423 last_pn_valid = peer->tids_last_pn_valid[tid]; 2424 last_pn = &peer->tids_last_pn[tid]; 2425 2426 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2427 sec_index = HTT_TXRX_SEC_MCAST; 2428 else 2429 sec_index = HTT_TXRX_SEC_UCAST; 2430 2431 sec_type = peer->rx_pn[sec_index].sec_type; 2432 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2433 2434 if (sec_type != HTT_SECURITY_AES_CCMP && 2435 sec_type != HTT_SECURITY_TKIP && 2436 sec_type != HTT_SECURITY_TKIP_NOMIC) 2437 return false; 2438 2439 if (last_pn_valid) 2440 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn); 2441 else 2442 peer->tids_last_pn_valid[tid] = true; 2443 2444 if (!pn_invalid) 2445 last_pn->pn48 = new_pn.pn48; 2446 2447 return pn_invalid; 2448 } 2449 2450 static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt, 2451 struct htt_rx_indication_hl *rx, 2452 struct sk_buff *skb, 2453 enum htt_rx_pn_check_type check_pn_type, 2454 enum htt_rx_tkip_demic_type tkip_mic_type) 2455 { 2456 struct ath10k *ar = htt->ar; 2457 struct ath10k_peer *peer; 2458 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2459 struct fw_rx_desc_hl *fw_desc; 2460 enum htt_txrx_sec_cast_type sec_index; 2461 enum htt_security_types sec_type; 2462 union htt_rx_pn_t new_pn = {0}; 2463 struct htt_hl_rx_desc *rx_desc; 2464 struct ieee80211_hdr *hdr; 2465 struct ieee80211_rx_status *rx_status; 2466 u16 peer_id; 2467 u8 rx_desc_len; 2468 int num_mpdu_ranges; 2469 size_t tot_hdr_len; 2470 struct ieee80211_channel *ch; 2471 bool pn_invalid, qos, first_msdu; 2472 u32 tid, rx_desc_info; 2473 2474 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2475 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2476 2477 spin_lock_bh(&ar->data_lock); 2478 peer = ath10k_peer_find_by_id(ar, peer_id); 2479 spin_unlock_bh(&ar->data_lock); 2480 if (!peer && peer_id != HTT_INVALID_PEERID) 2481 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id); 2482 2483 if (!peer) 2484 return true; 2485 2486 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2487 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2488 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx); 2489 fw_desc = &rx->fw_desc; 2490 rx_desc_len = fw_desc->len; 2491 2492 if (fw_desc->u.bits.discard) { 2493 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); 2494 goto err; 2495 } 2496 2497 /* I have not yet seen any case where num_mpdu_ranges > 1. 2498 * qcacld does not seem handle that case either, so we introduce the 2499 * same limitiation here as well. 2500 */ 2501 if (num_mpdu_ranges > 1) 2502 ath10k_warn(ar, 2503 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n", 2504 num_mpdu_ranges); 2505 2506 if (mpdu_ranges->mpdu_range_status != 2507 HTT_RX_IND_MPDU_STATUS_OK && 2508 mpdu_ranges->mpdu_range_status != 2509 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) { 2510 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n", 2511 mpdu_ranges->mpdu_range_status); 2512 goto err; 2513 } 2514 2515 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2516 rx_desc_info = __le32_to_cpu(rx_desc->info); 2517 2518 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2519 sec_index = HTT_TXRX_SEC_MCAST; 2520 else 2521 sec_index = HTT_TXRX_SEC_UCAST; 2522 2523 sec_type = peer->rx_pn[sec_index].sec_type; 2524 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU; 2525 2526 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2527 2528 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) { 2529 spin_lock_bh(&ar->data_lock); 2530 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx); 2531 spin_unlock_bh(&ar->data_lock); 2532 2533 if (pn_invalid) 2534 goto err; 2535 } 2536 2537 /* Strip off all headers before the MAC header before delivery to 2538 * mac80211 2539 */ 2540 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) + 2541 sizeof(rx->ppdu) + sizeof(rx->prefix) + 2542 sizeof(rx->fw_desc) + 2543 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len; 2544 2545 skb_pull(skb, tot_hdr_len); 2546 2547 hdr = (struct ieee80211_hdr *)skb->data; 2548 qos = ieee80211_is_data_qos(hdr->frame_control); 2549 2550 rx_status = IEEE80211_SKB_RXCB(skb); 2551 memset(rx_status, 0, sizeof(*rx_status)); 2552 2553 if (rx->ppdu.combined_rssi == 0) { 2554 /* SDIO firmware does not provide signal */ 2555 rx_status->signal = 0; 2556 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; 2557 } else { 2558 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 2559 rx->ppdu.combined_rssi; 2560 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 2561 } 2562 2563 spin_lock_bh(&ar->data_lock); 2564 ch = ar->scan_channel; 2565 if (!ch) 2566 ch = ar->rx_channel; 2567 if (!ch) 2568 ch = ath10k_htt_rx_h_any_channel(ar); 2569 if (!ch) 2570 ch = ar->tgt_oper_chan; 2571 spin_unlock_bh(&ar->data_lock); 2572 2573 if (ch) { 2574 rx_status->band = ch->band; 2575 rx_status->freq = ch->center_freq; 2576 } 2577 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU) 2578 rx_status->flag &= ~RX_FLAG_AMSDU_MORE; 2579 else 2580 rx_status->flag |= RX_FLAG_AMSDU_MORE; 2581 2582 /* Not entirely sure about this, but all frames from the chipset has 2583 * the protected flag set even though they have already been decrypted. 2584 * Unmasking this flag is necessary in order for mac80211 not to drop 2585 * the frame. 2586 * TODO: Verify this is always the case or find out a way to check 2587 * if there has been hw decryption. 2588 */ 2589 if (ieee80211_has_protected(hdr->frame_control)) { 2590 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2591 rx_status->flag |= RX_FLAG_DECRYPTED | 2592 RX_FLAG_IV_STRIPPED | 2593 RX_FLAG_MMIC_STRIPPED; 2594 2595 if (tid < IEEE80211_NUM_TIDS && 2596 first_msdu && 2597 check_pn_type == HTT_RX_PN_CHECK && 2598 (sec_type == HTT_SECURITY_AES_CCMP || 2599 sec_type == HTT_SECURITY_TKIP || 2600 sec_type == HTT_SECURITY_TKIP_NOMIC)) { 2601 u8 offset, *ivp, i; 2602 s8 keyidx = 0; 2603 __le64 pn48 = cpu_to_le64(new_pn.pn48); 2604 2605 hdr = (struct ieee80211_hdr *)skb->data; 2606 offset = ieee80211_hdrlen(hdr->frame_control); 2607 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2608 rx_status->flag &= ~RX_FLAG_IV_STRIPPED; 2609 2610 memmove(skb->data - IEEE80211_CCMP_HDR_LEN, 2611 skb->data, offset); 2612 skb_push(skb, IEEE80211_CCMP_HDR_LEN); 2613 ivp = skb->data + offset; 2614 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN); 2615 /* Ext IV */ 2616 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV; 2617 2618 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { 2619 if (peer->keys[i] && 2620 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE) 2621 keyidx = peer->keys[i]->keyidx; 2622 } 2623 2624 /* Key ID */ 2625 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6; 2626 2627 if (sec_type == HTT_SECURITY_AES_CCMP) { 2628 rx_status->flag |= RX_FLAG_MIC_STRIPPED; 2629 /* pn 0, pn 1 */ 2630 memcpy(skb->data + offset, &pn48, 2); 2631 /* pn 1, pn 3 , pn 34 , pn 5 */ 2632 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2633 } else { 2634 rx_status->flag |= RX_FLAG_ICV_STRIPPED; 2635 /* TSC 0 */ 2636 memcpy(skb->data + offset + 2, &pn48, 1); 2637 /* TSC 1 */ 2638 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1); 2639 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/ 2640 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2641 } 2642 } 2643 } 2644 2645 if (tkip_mic_type == HTT_RX_TKIP_MIC) 2646 rx_status->flag &= ~RX_FLAG_IV_STRIPPED & 2647 ~RX_FLAG_MMIC_STRIPPED; 2648 2649 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) 2650 rx_status->flag |= RX_FLAG_MMIC_ERROR; 2651 2652 if (!qos && tid < IEEE80211_NUM_TIDS) { 2653 u8 offset; 2654 __le16 qos_ctrl = 0; 2655 2656 hdr = (struct ieee80211_hdr *)skb->data; 2657 offset = ieee80211_hdrlen(hdr->frame_control); 2658 2659 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA); 2660 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset); 2661 skb_push(skb, IEEE80211_QOS_CTL_LEN); 2662 qos_ctrl = cpu_to_le16(tid); 2663 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN); 2664 } 2665 2666 if (ar->napi.dev) 2667 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 2668 else 2669 ieee80211_rx_ni(ar->hw, skb); 2670 2671 /* We have delivered the skb to the upper layers (mac80211) so we 2672 * must not free it. 2673 */ 2674 return false; 2675 err: 2676 /* Tell the caller that it must free the skb since we have not 2677 * consumed it 2678 */ 2679 return true; 2680 } 2681 2682 static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb, 2683 u16 head_len, 2684 u16 hdr_len) 2685 { 2686 u8 *ivp, *orig_hdr; 2687 2688 orig_hdr = skb->data; 2689 ivp = orig_hdr + hdr_len + head_len; 2690 2691 /* the ExtIV bit is always set to 1 for TKIP */ 2692 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2693 return -EINVAL; 2694 2695 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2696 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2697 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN); 2698 return 0; 2699 } 2700 2701 static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb, 2702 u16 head_len, 2703 u16 hdr_len) 2704 { 2705 u8 *ivp, *orig_hdr; 2706 2707 orig_hdr = skb->data; 2708 ivp = orig_hdr + hdr_len + head_len; 2709 2710 /* the ExtIV bit is always set to 1 for TKIP */ 2711 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2712 return -EINVAL; 2713 2714 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2715 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2716 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN); 2717 return 0; 2718 } 2719 2720 static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb, 2721 u16 head_len, 2722 u16 hdr_len) 2723 { 2724 u8 *ivp, *orig_hdr; 2725 2726 orig_hdr = skb->data; 2727 ivp = orig_hdr + hdr_len + head_len; 2728 2729 /* the ExtIV bit is always set to 1 for CCMP */ 2730 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2731 return -EINVAL; 2732 2733 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN); 2734 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len); 2735 skb_pull(skb, IEEE80211_CCMP_HDR_LEN); 2736 return 0; 2737 } 2738 2739 static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb, 2740 u16 head_len, 2741 u16 hdr_len) 2742 { 2743 u8 *orig_hdr; 2744 2745 orig_hdr = skb->data; 2746 2747 memmove(orig_hdr + IEEE80211_WEP_IV_LEN, 2748 orig_hdr, head_len + hdr_len); 2749 skb_pull(skb, IEEE80211_WEP_IV_LEN); 2750 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN); 2751 return 0; 2752 } 2753 2754 static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt, 2755 struct htt_rx_fragment_indication *rx, 2756 struct sk_buff *skb) 2757 { 2758 struct ath10k *ar = htt->ar; 2759 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC; 2760 enum htt_txrx_sec_cast_type sec_index; 2761 struct htt_rx_indication_hl *rx_hl; 2762 enum htt_security_types sec_type; 2763 u32 tid, frag, seq, rx_desc_info; 2764 union htt_rx_pn_t new_pn = {0}; 2765 struct htt_hl_rx_desc *rx_desc; 2766 u16 peer_id, sc, hdr_space; 2767 union htt_rx_pn_t *last_pn; 2768 struct ieee80211_hdr *hdr; 2769 int ret, num_mpdu_ranges; 2770 struct ath10k_peer *peer; 2771 struct htt_resp *resp; 2772 size_t tot_hdr_len; 2773 2774 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2775 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2776 skb_trim(skb, skb->len - FCS_LEN); 2777 2778 peer_id = __le16_to_cpu(rx->peer_id); 2779 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl); 2780 2781 spin_lock_bh(&ar->data_lock); 2782 peer = ath10k_peer_find_by_id(ar, peer_id); 2783 if (!peer) { 2784 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id); 2785 goto err; 2786 } 2787 2788 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1), 2789 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2790 2791 tot_hdr_len = sizeof(struct htt_resp_hdr) + 2792 sizeof(rx_hl->hdr) + 2793 sizeof(rx_hl->ppdu) + 2794 sizeof(rx_hl->prefix) + 2795 sizeof(rx_hl->fw_desc) + 2796 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges; 2797 2798 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2799 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len); 2800 rx_desc_info = __le32_to_cpu(rx_desc->info); 2801 2802 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); 2803 2804 if (is_multicast_ether_addr(hdr->addr1)) { 2805 /* Discard the fragment with multicast DA */ 2806 goto err; 2807 } 2808 2809 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) { 2810 spin_unlock_bh(&ar->data_lock); 2811 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2812 HTT_RX_NON_PN_CHECK, 2813 HTT_RX_NON_TKIP_MIC); 2814 } 2815 2816 if (ieee80211_has_retry(hdr->frame_control)) 2817 goto err; 2818 2819 hdr_space = ieee80211_hdrlen(hdr->frame_control); 2820 sc = __le16_to_cpu(hdr->seq_ctrl); 2821 seq = (sc & IEEE80211_SCTL_SEQ) >> 4; 2822 frag = sc & IEEE80211_SCTL_FRAG; 2823 2824 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ? 2825 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST; 2826 sec_type = peer->rx_pn[sec_index].sec_type; 2827 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2828 2829 switch (sec_type) { 2830 case HTT_SECURITY_TKIP: 2831 tkip_mic = HTT_RX_TKIP_MIC; 2832 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb, 2833 tot_hdr_len + 2834 rx_hl->fw_desc.len, 2835 hdr_space); 2836 if (ret) 2837 goto err; 2838 break; 2839 case HTT_SECURITY_TKIP_NOMIC: 2840 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb, 2841 tot_hdr_len + 2842 rx_hl->fw_desc.len, 2843 hdr_space); 2844 if (ret) 2845 goto err; 2846 break; 2847 case HTT_SECURITY_AES_CCMP: 2848 ret = ath10k_htt_rx_frag_ccmp_decap(skb, 2849 tot_hdr_len + rx_hl->fw_desc.len, 2850 hdr_space); 2851 if (ret) 2852 goto err; 2853 break; 2854 case HTT_SECURITY_WEP128: 2855 case HTT_SECURITY_WEP104: 2856 case HTT_SECURITY_WEP40: 2857 ret = ath10k_htt_rx_frag_wep_decap(skb, 2858 tot_hdr_len + rx_hl->fw_desc.len, 2859 hdr_space); 2860 if (ret) 2861 goto err; 2862 break; 2863 default: 2864 break; 2865 } 2866 2867 resp = (struct htt_resp *)(skb->data); 2868 2869 if (sec_type != HTT_SECURITY_AES_CCMP && 2870 sec_type != HTT_SECURITY_TKIP && 2871 sec_type != HTT_SECURITY_TKIP_NOMIC) { 2872 spin_unlock_bh(&ar->data_lock); 2873 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2874 HTT_RX_NON_PN_CHECK, 2875 HTT_RX_NON_TKIP_MIC); 2876 } 2877 2878 last_pn = &peer->frag_tids_last_pn[tid]; 2879 2880 if (frag == 0) { 2881 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl)) 2882 goto err; 2883 2884 last_pn->pn48 = new_pn.pn48; 2885 peer->frag_tids_seq[tid] = seq; 2886 } else if (sec_type == HTT_SECURITY_AES_CCMP) { 2887 if (seq != peer->frag_tids_seq[tid]) 2888 goto err; 2889 2890 if (new_pn.pn48 != last_pn->pn48 + 1) 2891 goto err; 2892 2893 last_pn->pn48 = new_pn.pn48; 2894 last_pn = &peer->tids_last_pn[tid]; 2895 last_pn->pn48 = new_pn.pn48; 2896 } 2897 2898 spin_unlock_bh(&ar->data_lock); 2899 2900 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2901 HTT_RX_NON_PN_CHECK, tkip_mic); 2902 2903 err: 2904 spin_unlock_bh(&ar->data_lock); 2905 2906 /* Tell the caller that it must free the skb since we have not 2907 * consumed it 2908 */ 2909 return true; 2910 } 2911 2912 static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt, 2913 struct htt_rx_indication *rx) 2914 { 2915 struct ath10k *ar = htt->ar; 2916 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2917 int num_mpdu_ranges; 2918 int i, mpdu_count = 0; 2919 u16 peer_id; 2920 u8 tid; 2921 2922 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2923 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2924 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2925 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2926 2927 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx); 2928 2929 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ", 2930 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges)); 2931 2932 for (i = 0; i < num_mpdu_ranges; i++) 2933 mpdu_count += mpdu_ranges[i].mpdu_count; 2934 2935 atomic_add(mpdu_count, &htt->num_mpdus_ready); 2936 2937 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges, 2938 num_mpdu_ranges); 2939 } 2940 2941 static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, 2942 struct sk_buff *skb) 2943 { 2944 struct ath10k_htt *htt = &ar->htt; 2945 struct htt_resp *resp = (struct htt_resp *)skb->data; 2946 struct htt_tx_done tx_done = {}; 2947 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS); 2948 __le16 msdu_id, *msdus; 2949 bool rssi_enabled = false; 2950 u8 msdu_count = 0, num_airtime_records, tid; 2951 int i, htt_pad = 0; 2952 struct htt_data_tx_compl_ppdu_dur *ppdu_info; 2953 struct ath10k_peer *peer; 2954 u16 ppdu_info_offset = 0, peer_id; 2955 u32 tx_duration; 2956 2957 switch (status) { 2958 case HTT_DATA_TX_STATUS_NO_ACK: 2959 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 2960 break; 2961 case HTT_DATA_TX_STATUS_OK: 2962 tx_done.status = HTT_TX_COMPL_STATE_ACK; 2963 break; 2964 case HTT_DATA_TX_STATUS_DISCARD: 2965 case HTT_DATA_TX_STATUS_POSTPONE: 2966 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL: 2967 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2968 break; 2969 default: 2970 ath10k_warn(ar, "unhandled tx completion status %d\n", status); 2971 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2972 break; 2973 } 2974 2975 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n", 2976 resp->data_tx_completion.num_msdus); 2977 2978 msdu_count = resp->data_tx_completion.num_msdus; 2979 msdus = resp->data_tx_completion.msdus; 2980 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp); 2981 2982 if (rssi_enabled) 2983 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params, 2984 resp); 2985 2986 for (i = 0; i < msdu_count; i++) { 2987 msdu_id = msdus[i]; 2988 tx_done.msdu_id = __le16_to_cpu(msdu_id); 2989 2990 if (rssi_enabled) { 2991 /* Total no of MSDUs should be even, 2992 * if odd MSDUs are sent firmware fills 2993 * last msdu id with 0xffff 2994 */ 2995 if (msdu_count & 0x01) { 2996 msdu_id = msdus[msdu_count + i + 1 + htt_pad]; 2997 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 2998 } else { 2999 msdu_id = msdus[msdu_count + i + htt_pad]; 3000 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 3001 } 3002 } 3003 3004 /* kfifo_put: In practice firmware shouldn't fire off per-CE 3005 * interrupt and main interrupt (MSI/-X range case) for the same 3006 * HTC service so it should be safe to use kfifo_put w/o lock. 3007 * 3008 * From kfifo_put() documentation: 3009 * Note that with only one concurrent reader and one concurrent 3010 * writer, you don't need extra locking to use these macro. 3011 */ 3012 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) { 3013 ath10k_txrx_tx_unref(htt, &tx_done); 3014 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) { 3015 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n", 3016 tx_done.msdu_id, tx_done.status); 3017 ath10k_txrx_tx_unref(htt, &tx_done); 3018 } 3019 } 3020 3021 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT)) 3022 return; 3023 3024 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count; 3025 3026 if (rssi_enabled) 3027 ppdu_info_offset += ppdu_info_offset; 3028 3029 if (resp->data_tx_completion.flags2 & 3030 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT)) 3031 ppdu_info_offset += 2; 3032 3033 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset]; 3034 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK, 3035 __le32_to_cpu(ppdu_info->info0)); 3036 3037 for (i = 0; i < num_airtime_records; i++) { 3038 struct htt_data_tx_ppdu_dur *ppdu_dur; 3039 u32 info0; 3040 3041 ppdu_dur = &ppdu_info->ppdu_dur[i]; 3042 info0 = __le32_to_cpu(ppdu_dur->info0); 3043 3044 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK, 3045 info0); 3046 rcu_read_lock(); 3047 spin_lock_bh(&ar->data_lock); 3048 3049 peer = ath10k_peer_find_by_id(ar, peer_id); 3050 if (!peer || !peer->sta) { 3051 spin_unlock_bh(&ar->data_lock); 3052 rcu_read_unlock(); 3053 continue; 3054 } 3055 3056 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) & 3057 IEEE80211_QOS_CTL_TID_MASK; 3058 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration); 3059 3060 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0); 3061 3062 spin_unlock_bh(&ar->data_lock); 3063 rcu_read_unlock(); 3064 } 3065 } 3066 3067 static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp) 3068 { 3069 struct htt_rx_addba *ev = &resp->rx_addba; 3070 struct ath10k_peer *peer; 3071 struct ath10k_vif *arvif; 3072 u16 info0, tid, peer_id; 3073 3074 info0 = __le16_to_cpu(ev->info0); 3075 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3076 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3077 3078 ath10k_dbg(ar, ATH10K_DBG_HTT, 3079 "htt rx addba tid %u peer_id %u size %u\n", 3080 tid, peer_id, ev->window_size); 3081 3082 spin_lock_bh(&ar->data_lock); 3083 peer = ath10k_peer_find_by_id(ar, peer_id); 3084 if (!peer) { 3085 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3086 peer_id); 3087 spin_unlock_bh(&ar->data_lock); 3088 return; 3089 } 3090 3091 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3092 if (!arvif) { 3093 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3094 peer->vdev_id); 3095 spin_unlock_bh(&ar->data_lock); 3096 return; 3097 } 3098 3099 ath10k_dbg(ar, ATH10K_DBG_HTT, 3100 "htt rx start rx ba session sta %pM tid %u size %u\n", 3101 peer->addr, tid, ev->window_size); 3102 3103 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3104 spin_unlock_bh(&ar->data_lock); 3105 } 3106 3107 static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp) 3108 { 3109 struct htt_rx_delba *ev = &resp->rx_delba; 3110 struct ath10k_peer *peer; 3111 struct ath10k_vif *arvif; 3112 u16 info0, tid, peer_id; 3113 3114 info0 = __le16_to_cpu(ev->info0); 3115 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3116 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3117 3118 ath10k_dbg(ar, ATH10K_DBG_HTT, 3119 "htt rx delba tid %u peer_id %u\n", 3120 tid, peer_id); 3121 3122 spin_lock_bh(&ar->data_lock); 3123 peer = ath10k_peer_find_by_id(ar, peer_id); 3124 if (!peer) { 3125 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3126 peer_id); 3127 spin_unlock_bh(&ar->data_lock); 3128 return; 3129 } 3130 3131 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3132 if (!arvif) { 3133 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3134 peer->vdev_id); 3135 spin_unlock_bh(&ar->data_lock); 3136 return; 3137 } 3138 3139 ath10k_dbg(ar, ATH10K_DBG_HTT, 3140 "htt rx stop rx ba session sta %pM tid %u\n", 3141 peer->addr, tid); 3142 3143 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3144 spin_unlock_bh(&ar->data_lock); 3145 } 3146 3147 static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw, 3148 struct sk_buff_head *list, 3149 struct sk_buff_head *amsdu) 3150 { 3151 struct sk_buff *msdu; 3152 struct htt_rx_desc *rxd; 3153 struct rx_msdu_end_common *rxd_msdu_end_common; 3154 3155 if (skb_queue_empty(list)) 3156 return -ENOBUFS; 3157 3158 if (WARN_ON(!skb_queue_empty(amsdu))) 3159 return -EINVAL; 3160 3161 while ((msdu = __skb_dequeue(list))) { 3162 __skb_queue_tail(amsdu, msdu); 3163 3164 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3165 (void *)msdu->data - 3166 hw->rx_desc_ops->rx_desc_size); 3167 3168 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3169 if (rxd_msdu_end_common->info0 & 3170 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)) 3171 break; 3172 } 3173 3174 msdu = skb_peek_tail(amsdu); 3175 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3176 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 3177 3178 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3179 if (!(rxd_msdu_end_common->info0 & 3180 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) { 3181 skb_queue_splice_init(amsdu, list); 3182 return -EAGAIN; 3183 } 3184 3185 return 0; 3186 } 3187 3188 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, 3189 struct sk_buff *skb) 3190 { 3191 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3192 3193 if (!ieee80211_has_protected(hdr->frame_control)) 3194 return; 3195 3196 /* Offloaded frames are already decrypted but firmware insists they are 3197 * protected in the 802.11 header. Strip the flag. Otherwise mac80211 3198 * will drop the frame. 3199 */ 3200 3201 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 3202 status->flag |= RX_FLAG_DECRYPTED | 3203 RX_FLAG_IV_STRIPPED | 3204 RX_FLAG_MMIC_STRIPPED; 3205 } 3206 3207 static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar, 3208 struct sk_buff_head *list) 3209 { 3210 struct ath10k_htt *htt = &ar->htt; 3211 struct ieee80211_rx_status *status = &htt->rx_status; 3212 struct htt_rx_offload_msdu *rx; 3213 struct sk_buff *msdu; 3214 size_t offset; 3215 3216 while ((msdu = __skb_dequeue(list))) { 3217 /* Offloaded frames don't have Rx descriptor. Instead they have 3218 * a short meta information header. 3219 */ 3220 3221 rx = (void *)msdu->data; 3222 3223 skb_put(msdu, sizeof(*rx)); 3224 skb_pull(msdu, sizeof(*rx)); 3225 3226 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) { 3227 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n"); 3228 dev_kfree_skb_any(msdu); 3229 continue; 3230 } 3231 3232 skb_put(msdu, __le16_to_cpu(rx->msdu_len)); 3233 3234 /* Offloaded rx header length isn't multiple of 2 nor 4 so the 3235 * actual payload is unaligned. Align the frame. Otherwise 3236 * mac80211 complains. This shouldn't reduce performance much 3237 * because these offloaded frames are rare. 3238 */ 3239 offset = 4 - ((unsigned long)msdu->data & 3); 3240 skb_put(msdu, offset); 3241 memmove(msdu->data + offset, msdu->data, msdu->len); 3242 skb_pull(msdu, offset); 3243 3244 /* FIXME: The frame is NWifi. Re-construct QoS Control 3245 * if possible later. 3246 */ 3247 3248 memset(status, 0, sizeof(*status)); 3249 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 3250 3251 ath10k_htt_rx_h_rx_offload_prot(status, msdu); 3252 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); 3253 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 3254 } 3255 } 3256 3257 static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) 3258 { 3259 struct ath10k_htt *htt = &ar->htt; 3260 struct htt_resp *resp = (void *)skb->data; 3261 struct ieee80211_rx_status *status = &htt->rx_status; 3262 struct sk_buff_head list; 3263 struct sk_buff_head amsdu; 3264 u16 peer_id; 3265 u16 msdu_count; 3266 u8 vdev_id; 3267 u8 tid; 3268 bool offload; 3269 bool frag; 3270 int ret; 3271 3272 lockdep_assert_held(&htt->rx_ring.lock); 3273 3274 if (htt->rx_confused) 3275 return -EIO; 3276 3277 skb_pull(skb, sizeof(resp->hdr)); 3278 skb_pull(skb, sizeof(resp->rx_in_ord_ind)); 3279 3280 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id); 3281 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count); 3282 vdev_id = resp->rx_in_ord_ind.vdev_id; 3283 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID); 3284 offload = !!(resp->rx_in_ord_ind.info & 3285 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 3286 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK); 3287 3288 ath10k_dbg(ar, ATH10K_DBG_HTT, 3289 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n", 3290 vdev_id, peer_id, tid, offload, frag, msdu_count); 3291 3292 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) { 3293 ath10k_warn(ar, "dropping invalid in order rx indication\n"); 3294 return -EINVAL; 3295 } 3296 3297 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later 3298 * extracted and processed. 3299 */ 3300 __skb_queue_head_init(&list); 3301 if (ar->hw_params.target_64bit) 3302 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind, 3303 &list); 3304 else 3305 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind, 3306 &list); 3307 3308 if (ret < 0) { 3309 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret); 3310 htt->rx_confused = true; 3311 return -EIO; 3312 } 3313 3314 /* Offloaded frames are very different and need to be handled 3315 * separately. 3316 */ 3317 if (offload) 3318 ath10k_htt_rx_h_rx_offload(ar, &list); 3319 3320 while (!skb_queue_empty(&list)) { 3321 __skb_queue_head_init(&amsdu); 3322 ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu); 3323 switch (ret) { 3324 case 0: 3325 /* Note: The in-order indication may report interleaved 3326 * frames from different PPDUs meaning reported rx rate 3327 * to mac80211 isn't accurate/reliable. It's still 3328 * better to report something than nothing though. This 3329 * should still give an idea about rx rate to the user. 3330 */ 3331 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); 3332 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL); 3333 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL, 3334 NULL, peer_id, frag); 3335 ath10k_htt_rx_h_enqueue(ar, &amsdu, status); 3336 break; 3337 case -EAGAIN: 3338 fallthrough; 3339 default: 3340 /* Should not happen. */ 3341 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret); 3342 htt->rx_confused = true; 3343 __skb_queue_purge(&list); 3344 return -EIO; 3345 } 3346 } 3347 return ret; 3348 } 3349 3350 static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, 3351 const __le32 *resp_ids, 3352 int num_resp_ids) 3353 { 3354 int i; 3355 u32 resp_id; 3356 3357 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n", 3358 num_resp_ids); 3359 3360 for (i = 0; i < num_resp_ids; i++) { 3361 resp_id = le32_to_cpu(resp_ids[i]); 3362 3363 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n", 3364 resp_id); 3365 3366 /* TODO: free resp_id */ 3367 } 3368 } 3369 3370 static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb) 3371 { 3372 struct ieee80211_hw *hw = ar->hw; 3373 struct ieee80211_txq *txq; 3374 struct htt_resp *resp = (struct htt_resp *)skb->data; 3375 struct htt_tx_fetch_record *record; 3376 size_t len; 3377 size_t max_num_bytes; 3378 size_t max_num_msdus; 3379 size_t num_bytes; 3380 size_t num_msdus; 3381 const __le32 *resp_ids; 3382 u16 num_records; 3383 u16 num_resp_ids; 3384 u16 peer_id; 3385 u8 tid; 3386 int ret; 3387 int i; 3388 bool may_tx; 3389 3390 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n"); 3391 3392 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind); 3393 if (unlikely(skb->len < len)) { 3394 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n"); 3395 return; 3396 } 3397 3398 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records); 3399 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids); 3400 3401 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records; 3402 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids; 3403 3404 if (unlikely(skb->len < len)) { 3405 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n"); 3406 return; 3407 } 3408 3409 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n", 3410 num_records, num_resp_ids, 3411 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num)); 3412 3413 if (!ar->htt.tx_q_state.enabled) { 3414 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n"); 3415 return; 3416 } 3417 3418 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) { 3419 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n"); 3420 return; 3421 } 3422 3423 rcu_read_lock(); 3424 3425 for (i = 0; i < num_records; i++) { 3426 record = &resp->tx_fetch_ind.records[i]; 3427 peer_id = MS(le16_to_cpu(record->info), 3428 HTT_TX_FETCH_RECORD_INFO_PEER_ID); 3429 tid = MS(le16_to_cpu(record->info), 3430 HTT_TX_FETCH_RECORD_INFO_TID); 3431 max_num_msdus = le16_to_cpu(record->num_msdus); 3432 max_num_bytes = le32_to_cpu(record->num_bytes); 3433 3434 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n", 3435 i, peer_id, tid, max_num_msdus, max_num_bytes); 3436 3437 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3438 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3439 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3440 peer_id, tid); 3441 continue; 3442 } 3443 3444 spin_lock_bh(&ar->data_lock); 3445 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3446 spin_unlock_bh(&ar->data_lock); 3447 3448 /* It is okay to release the lock and use txq because RCU read 3449 * lock is held. 3450 */ 3451 3452 if (unlikely(!txq)) { 3453 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3454 peer_id, tid); 3455 continue; 3456 } 3457 3458 num_msdus = 0; 3459 num_bytes = 0; 3460 3461 ieee80211_txq_schedule_start(hw, txq->ac); 3462 may_tx = ieee80211_txq_may_transmit(hw, txq); 3463 while (num_msdus < max_num_msdus && 3464 num_bytes < max_num_bytes) { 3465 if (!may_tx) 3466 break; 3467 3468 ret = ath10k_mac_tx_push_txq(hw, txq); 3469 if (ret < 0) 3470 break; 3471 3472 num_msdus++; 3473 num_bytes += ret; 3474 } 3475 ieee80211_return_txq(hw, txq, false); 3476 ieee80211_txq_schedule_end(hw, txq->ac); 3477 3478 record->num_msdus = cpu_to_le16(num_msdus); 3479 record->num_bytes = cpu_to_le32(num_bytes); 3480 3481 ath10k_htt_tx_txq_recalc(hw, txq); 3482 } 3483 3484 rcu_read_unlock(); 3485 3486 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind); 3487 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids); 3488 3489 ret = ath10k_htt_tx_fetch_resp(ar, 3490 resp->tx_fetch_ind.token, 3491 resp->tx_fetch_ind.fetch_seq_num, 3492 resp->tx_fetch_ind.records, 3493 num_records); 3494 if (unlikely(ret)) { 3495 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n", 3496 le32_to_cpu(resp->tx_fetch_ind.token), ret); 3497 /* FIXME: request fw restart */ 3498 } 3499 3500 ath10k_htt_tx_txq_sync(ar); 3501 } 3502 3503 static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar, 3504 struct sk_buff *skb) 3505 { 3506 const struct htt_resp *resp = (void *)skb->data; 3507 size_t len; 3508 int num_resp_ids; 3509 3510 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n"); 3511 3512 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm); 3513 if (unlikely(skb->len < len)) { 3514 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n"); 3515 return; 3516 } 3517 3518 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids); 3519 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids; 3520 3521 if (unlikely(skb->len < len)) { 3522 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n"); 3523 return; 3524 } 3525 3526 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, 3527 resp->tx_fetch_confirm.resp_ids, 3528 num_resp_ids); 3529 } 3530 3531 static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar, 3532 struct sk_buff *skb) 3533 { 3534 const struct htt_resp *resp = (void *)skb->data; 3535 const struct htt_tx_mode_switch_record *record; 3536 struct ieee80211_txq *txq; 3537 struct ath10k_txq *artxq; 3538 size_t len; 3539 size_t num_records; 3540 enum htt_tx_mode_switch_mode mode; 3541 bool enable; 3542 u16 info0; 3543 u16 info1; 3544 u16 threshold; 3545 u16 peer_id; 3546 u8 tid; 3547 int i; 3548 3549 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n"); 3550 3551 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind); 3552 if (unlikely(skb->len < len)) { 3553 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n"); 3554 return; 3555 } 3556 3557 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0); 3558 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1); 3559 3560 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE); 3561 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3562 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE); 3563 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3564 3565 ath10k_dbg(ar, ATH10K_DBG_HTT, 3566 "htt rx tx mode switch ind info0 0x%04hx info1 0x%04x enable %d num records %zd mode %d threshold %u\n", 3567 info0, info1, enable, num_records, mode, threshold); 3568 3569 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records; 3570 3571 if (unlikely(skb->len < len)) { 3572 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n"); 3573 return; 3574 } 3575 3576 switch (mode) { 3577 case HTT_TX_MODE_SWITCH_PUSH: 3578 case HTT_TX_MODE_SWITCH_PUSH_PULL: 3579 break; 3580 default: 3581 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n", 3582 mode); 3583 return; 3584 } 3585 3586 if (!enable) 3587 return; 3588 3589 ar->htt.tx_q_state.enabled = enable; 3590 ar->htt.tx_q_state.mode = mode; 3591 ar->htt.tx_q_state.num_push_allowed = threshold; 3592 3593 rcu_read_lock(); 3594 3595 for (i = 0; i < num_records; i++) { 3596 record = &resp->tx_mode_switch_ind.records[i]; 3597 info0 = le16_to_cpu(record->info0); 3598 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID); 3599 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID); 3600 3601 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3602 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3603 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3604 peer_id, tid); 3605 continue; 3606 } 3607 3608 spin_lock_bh(&ar->data_lock); 3609 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3610 spin_unlock_bh(&ar->data_lock); 3611 3612 /* It is okay to release the lock and use txq because RCU read 3613 * lock is held. 3614 */ 3615 3616 if (unlikely(!txq)) { 3617 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3618 peer_id, tid); 3619 continue; 3620 } 3621 3622 spin_lock_bh(&ar->htt.tx_lock); 3623 artxq = (void *)txq->drv_priv; 3624 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus); 3625 spin_unlock_bh(&ar->htt.tx_lock); 3626 } 3627 3628 rcu_read_unlock(); 3629 3630 ath10k_mac_tx_push_pending(ar); 3631 } 3632 3633 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 3634 { 3635 bool release; 3636 3637 release = ath10k_htt_t2h_msg_handler(ar, skb); 3638 3639 /* Free the indication buffer */ 3640 if (release) 3641 dev_kfree_skb_any(skb); 3642 } 3643 3644 static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate) 3645 { 3646 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, 3647 18, 24, 36, 48, 54}; 3648 int i; 3649 3650 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { 3651 if (rate == legacy_rates[i]) 3652 return i; 3653 } 3654 3655 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate); 3656 return -EINVAL; 3657 } 3658 3659 static void 3660 ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar, 3661 struct ath10k_sta *arsta, 3662 struct ath10k_per_peer_tx_stats *pstats, 3663 s8 legacy_rate_idx) 3664 { 3665 struct rate_info *txrate = &arsta->txrate; 3666 struct ath10k_htt_tx_stats *tx_stats; 3667 int idx, ht_idx, gi, mcs, bw, nss; 3668 unsigned long flags; 3669 3670 if (!arsta->tx_stats) 3671 return; 3672 3673 tx_stats = arsta->tx_stats; 3674 flags = txrate->flags; 3675 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags); 3676 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode); 3677 bw = txrate->bw; 3678 nss = txrate->nss; 3679 ht_idx = mcs + (nss - 1) * 8; 3680 idx = mcs * 8 + 8 * 10 * (nss - 1); 3681 idx += bw * 2 + gi; 3682 3683 #define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name] 3684 3685 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) { 3686 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes; 3687 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts; 3688 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes; 3689 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts; 3690 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes; 3691 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts; 3692 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3693 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes; 3694 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts; 3695 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes; 3696 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts; 3697 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes; 3698 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts; 3699 } else { 3700 mcs = legacy_rate_idx; 3701 3702 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes; 3703 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts; 3704 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes; 3705 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts; 3706 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes; 3707 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts; 3708 } 3709 3710 if (ATH10K_HW_AMPDU(pstats->flags)) { 3711 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags); 3712 3713 if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3714 STATS_OP_FMT(AMPDU).ht[0][ht_idx] += 3715 pstats->succ_bytes + pstats->retry_bytes; 3716 STATS_OP_FMT(AMPDU).ht[1][ht_idx] += 3717 pstats->succ_pkts + pstats->retry_pkts; 3718 } else { 3719 STATS_OP_FMT(AMPDU).vht[0][mcs] += 3720 pstats->succ_bytes + pstats->retry_bytes; 3721 STATS_OP_FMT(AMPDU).vht[1][mcs] += 3722 pstats->succ_pkts + pstats->retry_pkts; 3723 } 3724 STATS_OP_FMT(AMPDU).bw[0][bw] += 3725 pstats->succ_bytes + pstats->retry_bytes; 3726 STATS_OP_FMT(AMPDU).nss[0][nss - 1] += 3727 pstats->succ_bytes + pstats->retry_bytes; 3728 STATS_OP_FMT(AMPDU).gi[0][gi] += 3729 pstats->succ_bytes + pstats->retry_bytes; 3730 STATS_OP_FMT(AMPDU).rate_table[0][idx] += 3731 pstats->succ_bytes + pstats->retry_bytes; 3732 STATS_OP_FMT(AMPDU).bw[1][bw] += 3733 pstats->succ_pkts + pstats->retry_pkts; 3734 STATS_OP_FMT(AMPDU).nss[1][nss - 1] += 3735 pstats->succ_pkts + pstats->retry_pkts; 3736 STATS_OP_FMT(AMPDU).gi[1][gi] += 3737 pstats->succ_pkts + pstats->retry_pkts; 3738 STATS_OP_FMT(AMPDU).rate_table[1][idx] += 3739 pstats->succ_pkts + pstats->retry_pkts; 3740 } else { 3741 tx_stats->ack_fails += 3742 ATH10K_HW_BA_FAIL(pstats->flags); 3743 } 3744 3745 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes; 3746 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes; 3747 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes; 3748 3749 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts; 3750 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts; 3751 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts; 3752 3753 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes; 3754 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes; 3755 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes; 3756 3757 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts; 3758 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts; 3759 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts; 3760 3761 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes; 3762 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes; 3763 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes; 3764 3765 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts; 3766 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts; 3767 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts; 3768 3769 if (txrate->flags >= RATE_INFO_FLAGS_MCS) { 3770 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes; 3771 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts; 3772 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes; 3773 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts; 3774 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes; 3775 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts; 3776 } 3777 3778 tx_stats->tx_duration += pstats->duration; 3779 } 3780 3781 static void 3782 ath10k_update_per_peer_tx_stats(struct ath10k *ar, 3783 struct ieee80211_sta *sta, 3784 struct ath10k_per_peer_tx_stats *peer_stats) 3785 { 3786 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; 3787 struct ieee80211_chanctx_conf *conf = NULL; 3788 u8 rate = 0, sgi; 3789 s8 rate_idx = 0; 3790 bool skip_auto_rate; 3791 struct rate_info txrate; 3792 3793 lockdep_assert_held(&ar->data_lock); 3794 3795 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); 3796 txrate.bw = ATH10K_HW_BW(peer_stats->flags); 3797 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); 3798 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); 3799 sgi = ATH10K_HW_GI(peer_stats->flags); 3800 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags); 3801 3802 /* Firmware's rate control skips broadcast/management frames, 3803 * if host has configure fixed rates and in some other special cases. 3804 */ 3805 if (skip_auto_rate) 3806 return; 3807 3808 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) { 3809 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs); 3810 return; 3811 } 3812 3813 if (txrate.flags == WMI_RATE_PREAMBLE_HT && 3814 (txrate.mcs > 7 || txrate.nss < 1)) { 3815 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats", 3816 txrate.mcs, txrate.nss); 3817 return; 3818 } 3819 3820 memset(&arsta->txrate, 0, sizeof(arsta->txrate)); 3821 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status)); 3822 if (txrate.flags == WMI_RATE_PREAMBLE_CCK || 3823 txrate.flags == WMI_RATE_PREAMBLE_OFDM) { 3824 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); 3825 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ 3826 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK) 3827 rate = 5; 3828 rate_idx = ath10k_get_legacy_rate_idx(ar, rate); 3829 if (rate_idx < 0) 3830 return; 3831 arsta->txrate.legacy = rate; 3832 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { 3833 arsta->txrate.flags = RATE_INFO_FLAGS_MCS; 3834 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1); 3835 } else { 3836 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; 3837 arsta->txrate.mcs = txrate.mcs; 3838 } 3839 3840 switch (txrate.flags) { 3841 case WMI_RATE_PREAMBLE_OFDM: 3842 if (arsta->arvif && arsta->arvif->vif) 3843 conf = rcu_dereference(arsta->arvif->vif->chanctx_conf); 3844 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ) 3845 arsta->tx_info.status.rates[0].idx = rate_idx - 4; 3846 break; 3847 case WMI_RATE_PREAMBLE_CCK: 3848 arsta->tx_info.status.rates[0].idx = rate_idx; 3849 if (sgi) 3850 arsta->tx_info.status.rates[0].flags |= 3851 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE | 3852 IEEE80211_TX_RC_SHORT_GI); 3853 break; 3854 case WMI_RATE_PREAMBLE_HT: 3855 arsta->tx_info.status.rates[0].idx = 3856 txrate.mcs + ((txrate.nss - 1) * 8); 3857 if (sgi) 3858 arsta->tx_info.status.rates[0].flags |= 3859 IEEE80211_TX_RC_SHORT_GI; 3860 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS; 3861 break; 3862 case WMI_RATE_PREAMBLE_VHT: 3863 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0], 3864 txrate.mcs, txrate.nss); 3865 if (sgi) 3866 arsta->tx_info.status.rates[0].flags |= 3867 IEEE80211_TX_RC_SHORT_GI; 3868 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS; 3869 break; 3870 } 3871 3872 arsta->txrate.nss = txrate.nss; 3873 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw); 3874 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate); 3875 if (sgi) 3876 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 3877 3878 switch (arsta->txrate.bw) { 3879 case RATE_INFO_BW_40: 3880 arsta->tx_info.status.rates[0].flags |= 3881 IEEE80211_TX_RC_40_MHZ_WIDTH; 3882 break; 3883 case RATE_INFO_BW_80: 3884 arsta->tx_info.status.rates[0].flags |= 3885 IEEE80211_TX_RC_80_MHZ_WIDTH; 3886 break; 3887 } 3888 3889 if (peer_stats->succ_pkts) { 3890 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK; 3891 arsta->tx_info.status.rates[0].count = 1; 3892 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info); 3893 } 3894 3895 if (ar->htt.disable_tx_comp) { 3896 arsta->tx_failed += peer_stats->failed_pkts; 3897 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n", 3898 arsta->tx_failed); 3899 } 3900 3901 arsta->tx_retries += peer_stats->retry_pkts; 3902 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries); 3903 3904 if (ath10k_debug_is_extd_tx_stats_enabled(ar)) 3905 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats, 3906 rate_idx); 3907 } 3908 3909 static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, 3910 struct sk_buff *skb) 3911 { 3912 struct htt_resp *resp = (struct htt_resp *)skb->data; 3913 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3914 struct htt_per_peer_tx_stats_ind *tx_stats; 3915 struct ieee80211_sta *sta; 3916 struct ath10k_peer *peer; 3917 int peer_id, i; 3918 u8 ppdu_len, num_ppdu; 3919 3920 num_ppdu = resp->peer_tx_stats.num_ppdu; 3921 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); 3922 3923 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { 3924 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); 3925 return; 3926 } 3927 3928 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3929 (resp->peer_tx_stats.payload); 3930 peer_id = __le16_to_cpu(tx_stats->peer_id); 3931 3932 rcu_read_lock(); 3933 spin_lock_bh(&ar->data_lock); 3934 peer = ath10k_peer_find_by_id(ar, peer_id); 3935 if (!peer || !peer->sta) { 3936 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n", 3937 peer_id); 3938 goto out; 3939 } 3940 3941 sta = peer->sta; 3942 for (i = 0; i < num_ppdu; i++) { 3943 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3944 (resp->peer_tx_stats.payload + i * ppdu_len); 3945 3946 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); 3947 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); 3948 p_tx_stats->failed_bytes = 3949 __le32_to_cpu(tx_stats->failed_bytes); 3950 p_tx_stats->ratecode = tx_stats->ratecode; 3951 p_tx_stats->flags = tx_stats->flags; 3952 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); 3953 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); 3954 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); 3955 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration); 3956 3957 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 3958 } 3959 3960 out: 3961 spin_unlock_bh(&ar->data_lock); 3962 rcu_read_unlock(); 3963 } 3964 3965 static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data) 3966 { 3967 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data; 3968 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3969 struct ath10k_10_2_peer_tx_stats *tx_stats; 3970 struct ieee80211_sta *sta; 3971 struct ath10k_peer *peer; 3972 u16 log_type = __le16_to_cpu(hdr->log_type); 3973 u32 peer_id = 0, i; 3974 3975 if (log_type != ATH_PKTLOG_TYPE_TX_STAT) 3976 return; 3977 3978 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) + 3979 ATH10K_10_2_TX_STATS_OFFSET); 3980 3981 if (!tx_stats->tx_ppdu_cnt) 3982 return; 3983 3984 peer_id = tx_stats->peer_id; 3985 3986 rcu_read_lock(); 3987 spin_lock_bh(&ar->data_lock); 3988 peer = ath10k_peer_find_by_id(ar, peer_id); 3989 if (!peer || !peer->sta) { 3990 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n", 3991 peer_id); 3992 goto out; 3993 } 3994 3995 sta = peer->sta; 3996 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) { 3997 p_tx_stats->succ_bytes = 3998 __le16_to_cpu(tx_stats->success_bytes[i]); 3999 p_tx_stats->retry_bytes = 4000 __le16_to_cpu(tx_stats->retry_bytes[i]); 4001 p_tx_stats->failed_bytes = 4002 __le16_to_cpu(tx_stats->failed_bytes[i]); 4003 p_tx_stats->ratecode = tx_stats->ratecode[i]; 4004 p_tx_stats->flags = tx_stats->flags[i]; 4005 p_tx_stats->succ_pkts = tx_stats->success_pkts[i]; 4006 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i]; 4007 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i]; 4008 4009 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 4010 } 4011 spin_unlock_bh(&ar->data_lock); 4012 rcu_read_unlock(); 4013 4014 return; 4015 4016 out: 4017 spin_unlock_bh(&ar->data_lock); 4018 rcu_read_unlock(); 4019 } 4020 4021 static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type) 4022 { 4023 switch (sec_type) { 4024 case HTT_SECURITY_TKIP: 4025 case HTT_SECURITY_TKIP_NOMIC: 4026 case HTT_SECURITY_AES_CCMP: 4027 return 48; 4028 default: 4029 return 0; 4030 } 4031 } 4032 4033 static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar, 4034 struct htt_security_indication *ev) 4035 { 4036 enum htt_txrx_sec_cast_type sec_index; 4037 enum htt_security_types sec_type; 4038 struct ath10k_peer *peer; 4039 4040 spin_lock_bh(&ar->data_lock); 4041 4042 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id)); 4043 if (!peer) { 4044 ath10k_warn(ar, "failed to find peer id %d for security indication", 4045 __le16_to_cpu(ev->peer_id)); 4046 goto out; 4047 } 4048 4049 sec_type = MS(ev->flags, HTT_SECURITY_TYPE); 4050 4051 if (ev->flags & HTT_SECURITY_IS_UNICAST) 4052 sec_index = HTT_TXRX_SEC_UCAST; 4053 else 4054 sec_index = HTT_TXRX_SEC_MCAST; 4055 4056 peer->rx_pn[sec_index].sec_type = sec_type; 4057 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type); 4058 4059 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid)); 4060 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn)); 4061 4062 out: 4063 spin_unlock_bh(&ar->data_lock); 4064 } 4065 4066 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 4067 { 4068 struct ath10k_htt *htt = &ar->htt; 4069 struct htt_resp *resp = (struct htt_resp *)skb->data; 4070 enum htt_t2h_msg_type type; 4071 4072 /* confirm alignment */ 4073 if (!IS_ALIGNED((unsigned long)skb->data, 4)) 4074 ath10k_warn(ar, "unaligned htt message, expect trouble\n"); 4075 4076 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n", 4077 resp->hdr.msg_type); 4078 4079 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) { 4080 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X", 4081 resp->hdr.msg_type, ar->htt.t2h_msg_types_max); 4082 return true; 4083 } 4084 type = ar->htt.t2h_msg_types[resp->hdr.msg_type]; 4085 4086 switch (type) { 4087 case HTT_T2H_MSG_TYPE_VERSION_CONF: { 4088 htt->target_version_major = resp->ver_resp.major; 4089 htt->target_version_minor = resp->ver_resp.minor; 4090 complete(&htt->target_version_received); 4091 break; 4092 } 4093 case HTT_T2H_MSG_TYPE_RX_IND: 4094 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) { 4095 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind); 4096 } else { 4097 skb_queue_tail(&htt->rx_indication_head, skb); 4098 return false; 4099 } 4100 break; 4101 case HTT_T2H_MSG_TYPE_PEER_MAP: { 4102 struct htt_peer_map_event ev = { 4103 .vdev_id = resp->peer_map.vdev_id, 4104 .peer_id = __le16_to_cpu(resp->peer_map.peer_id), 4105 }; 4106 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr)); 4107 ath10k_peer_map_event(htt, &ev); 4108 break; 4109 } 4110 case HTT_T2H_MSG_TYPE_PEER_UNMAP: { 4111 struct htt_peer_unmap_event ev = { 4112 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id), 4113 }; 4114 ath10k_peer_unmap_event(htt, &ev); 4115 break; 4116 } 4117 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: { 4118 struct htt_tx_done tx_done = {}; 4119 struct ath10k_htt *htt = &ar->htt; 4120 struct ath10k_htc *htc = &ar->htc; 4121 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4122 int status = __le32_to_cpu(resp->mgmt_tx_completion.status); 4123 int info = __le32_to_cpu(resp->mgmt_tx_completion.info); 4124 4125 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); 4126 4127 switch (status) { 4128 case HTT_MGMT_TX_STATUS_OK: 4129 tx_done.status = HTT_TX_COMPL_STATE_ACK; 4130 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, 4131 ar->wmi.svc_map) && 4132 (resp->mgmt_tx_completion.flags & 4133 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) { 4134 tx_done.ack_rssi = 4135 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK, 4136 info); 4137 } 4138 break; 4139 case HTT_MGMT_TX_STATUS_RETRY: 4140 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 4141 break; 4142 case HTT_MGMT_TX_STATUS_DROP: 4143 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 4144 break; 4145 } 4146 4147 if (htt->disable_tx_comp) { 4148 spin_lock_bh(&htc->tx_lock); 4149 ep->tx_credits++; 4150 spin_unlock_bh(&htc->tx_lock); 4151 } 4152 4153 status = ath10k_txrx_tx_unref(htt, &tx_done); 4154 if (!status) { 4155 spin_lock_bh(&htt->tx_lock); 4156 ath10k_htt_tx_mgmt_dec_pending(htt); 4157 spin_unlock_bh(&htt->tx_lock); 4158 } 4159 break; 4160 } 4161 case HTT_T2H_MSG_TYPE_TX_COMPL_IND: 4162 ath10k_htt_rx_tx_compl_ind(htt->ar, skb); 4163 break; 4164 case HTT_T2H_MSG_TYPE_SEC_IND: { 4165 struct ath10k *ar = htt->ar; 4166 struct htt_security_indication *ev = &resp->security_indication; 4167 4168 ath10k_htt_rx_sec_ind_handler(ar, ev); 4169 ath10k_dbg(ar, ATH10K_DBG_HTT, 4170 "sec ind peer_id %d unicast %d type %d\n", 4171 __le16_to_cpu(ev->peer_id), 4172 !!(ev->flags & HTT_SECURITY_IS_UNICAST), 4173 MS(ev->flags, HTT_SECURITY_TYPE)); 4174 complete(&ar->install_key_done); 4175 break; 4176 } 4177 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: { 4178 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4179 skb->data, skb->len); 4180 atomic_inc(&htt->num_mpdus_ready); 4181 4182 return ath10k_htt_rx_proc_rx_frag_ind(htt, 4183 &resp->rx_frag_ind, 4184 skb); 4185 } 4186 case HTT_T2H_MSG_TYPE_TEST: 4187 break; 4188 case HTT_T2H_MSG_TYPE_STATS_CONF: 4189 trace_ath10k_htt_stats(ar, skb->data, skb->len); 4190 break; 4191 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND: 4192 /* Firmware can return tx frames if it's unable to fully 4193 * process them and suspects host may be able to fix it. ath10k 4194 * sends all tx frames as already inspected so this shouldn't 4195 * happen unless fw has a bug. 4196 */ 4197 ath10k_warn(ar, "received an unexpected htt tx inspect event\n"); 4198 break; 4199 case HTT_T2H_MSG_TYPE_RX_ADDBA: 4200 ath10k_htt_rx_addba(ar, resp); 4201 break; 4202 case HTT_T2H_MSG_TYPE_RX_DELBA: 4203 ath10k_htt_rx_delba(ar, resp); 4204 break; 4205 case HTT_T2H_MSG_TYPE_PKTLOG: { 4206 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload, 4207 skb->len - 4208 offsetof(struct htt_resp, 4209 pktlog_msg.payload)); 4210 4211 if (ath10k_peer_stats_enabled(ar)) 4212 ath10k_fetch_10_2_tx_stats(ar, 4213 resp->pktlog_msg.payload); 4214 break; 4215 } 4216 case HTT_T2H_MSG_TYPE_RX_FLUSH: { 4217 /* Ignore this event because mac80211 takes care of Rx 4218 * aggregation reordering. 4219 */ 4220 break; 4221 } 4222 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: { 4223 skb_queue_tail(&htt->rx_in_ord_compl_q, skb); 4224 return false; 4225 } 4226 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: { 4227 struct ath10k_htt *htt = &ar->htt; 4228 struct ath10k_htc *htc = &ar->htc; 4229 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4230 u32 msg_word = __le32_to_cpu(*(__le32 *)resp); 4231 int htt_credit_delta; 4232 4233 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word); 4234 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word)) 4235 htt_credit_delta = -htt_credit_delta; 4236 4237 ath10k_dbg(ar, ATH10K_DBG_HTT, 4238 "htt credit update delta %d\n", 4239 htt_credit_delta); 4240 4241 if (htt->disable_tx_comp) { 4242 spin_lock_bh(&htc->tx_lock); 4243 ep->tx_credits += htt_credit_delta; 4244 spin_unlock_bh(&htc->tx_lock); 4245 ath10k_dbg(ar, ATH10K_DBG_HTT, 4246 "htt credit total %d\n", 4247 ep->tx_credits); 4248 ep->ep_ops.ep_tx_credits(htc->ar); 4249 } 4250 break; 4251 } 4252 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: { 4253 u32 phymode = __le32_to_cpu(resp->chan_change.phymode); 4254 u32 freq = __le32_to_cpu(resp->chan_change.freq); 4255 4256 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq); 4257 ath10k_dbg(ar, ATH10K_DBG_HTT, 4258 "htt chan change freq %u phymode %s\n", 4259 freq, ath10k_wmi_phymode_str(phymode)); 4260 break; 4261 } 4262 case HTT_T2H_MSG_TYPE_AGGR_CONF: 4263 break; 4264 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: { 4265 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC); 4266 4267 if (!tx_fetch_ind) { 4268 ath10k_warn(ar, "failed to copy htt tx fetch ind\n"); 4269 break; 4270 } 4271 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind); 4272 break; 4273 } 4274 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM: 4275 ath10k_htt_rx_tx_fetch_confirm(ar, skb); 4276 break; 4277 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: 4278 ath10k_htt_rx_tx_mode_switch_ind(ar, skb); 4279 break; 4280 case HTT_T2H_MSG_TYPE_PEER_STATS: 4281 ath10k_htt_fetch_peer_stats(ar, skb); 4282 break; 4283 case HTT_T2H_MSG_TYPE_EN_STATS: 4284 default: 4285 ath10k_warn(ar, "htt event (%d) not handled\n", 4286 resp->hdr.msg_type); 4287 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4288 skb->data, skb->len); 4289 break; 4290 } 4291 return true; 4292 } 4293 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler); 4294 4295 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, 4296 struct sk_buff *skb) 4297 { 4298 trace_ath10k_htt_pktlog(ar, skb->data, skb->len); 4299 dev_kfree_skb_any(skb); 4300 } 4301 EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler); 4302 4303 static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget) 4304 { 4305 struct sk_buff *skb; 4306 4307 while (quota < budget) { 4308 if (skb_queue_empty(&ar->htt.rx_msdus_q)) 4309 break; 4310 4311 skb = skb_dequeue(&ar->htt.rx_msdus_q); 4312 if (!skb) 4313 break; 4314 ath10k_process_rx(ar, skb); 4315 quota++; 4316 } 4317 4318 return quota; 4319 } 4320 4321 int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget) 4322 { 4323 struct htt_resp *resp; 4324 struct ath10k_htt *htt = &ar->htt; 4325 struct sk_buff *skb; 4326 bool release; 4327 int quota; 4328 4329 for (quota = 0; quota < budget; quota++) { 4330 skb = skb_dequeue(&htt->rx_indication_head); 4331 if (!skb) 4332 break; 4333 4334 resp = (struct htt_resp *)skb->data; 4335 4336 release = ath10k_htt_rx_proc_rx_ind_hl(htt, 4337 &resp->rx_ind_hl, 4338 skb, 4339 HTT_RX_PN_CHECK, 4340 HTT_RX_NON_TKIP_MIC); 4341 4342 if (release) 4343 dev_kfree_skb_any(skb); 4344 4345 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n", 4346 skb_queue_len(&htt->rx_indication_head)); 4347 } 4348 return quota; 4349 } 4350 EXPORT_SYMBOL(ath10k_htt_rx_hl_indication); 4351 4352 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) 4353 { 4354 struct ath10k_htt *htt = &ar->htt; 4355 struct htt_tx_done tx_done = {}; 4356 struct sk_buff_head tx_ind_q; 4357 struct sk_buff *skb; 4358 unsigned long flags; 4359 int quota = 0, done, ret; 4360 bool resched_napi = false; 4361 4362 __skb_queue_head_init(&tx_ind_q); 4363 4364 /* Process pending frames before dequeuing more data 4365 * from hardware. 4366 */ 4367 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4368 if (quota == budget) { 4369 resched_napi = true; 4370 goto exit; 4371 } 4372 4373 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) { 4374 spin_lock_bh(&htt->rx_ring.lock); 4375 ret = ath10k_htt_rx_in_ord_ind(ar, skb); 4376 spin_unlock_bh(&htt->rx_ring.lock); 4377 4378 dev_kfree_skb_any(skb); 4379 if (ret == -EIO) { 4380 resched_napi = true; 4381 goto exit; 4382 } 4383 } 4384 4385 while (atomic_read(&htt->num_mpdus_ready)) { 4386 ret = ath10k_htt_rx_handle_amsdu(htt); 4387 if (ret == -EIO) { 4388 resched_napi = true; 4389 goto exit; 4390 } 4391 atomic_dec(&htt->num_mpdus_ready); 4392 } 4393 4394 /* Deliver received data after processing data from hardware */ 4395 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4396 4397 /* From NAPI documentation: 4398 * The napi poll() function may also process TX completions, in which 4399 * case if it processes the entire TX ring then it should count that 4400 * work as the rest of the budget. 4401 */ 4402 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo)) 4403 quota = budget; 4404 4405 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized. 4406 * From kfifo_get() documentation: 4407 * Note that with only one concurrent reader and one concurrent writer, 4408 * you don't need extra locking to use these macro. 4409 */ 4410 while (kfifo_get(&htt->txdone_fifo, &tx_done)) 4411 ath10k_txrx_tx_unref(htt, &tx_done); 4412 4413 ath10k_mac_tx_push_pending(ar); 4414 4415 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags); 4416 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q); 4417 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags); 4418 4419 while ((skb = __skb_dequeue(&tx_ind_q))) { 4420 ath10k_htt_rx_tx_fetch_ind(ar, skb); 4421 dev_kfree_skb_any(skb); 4422 } 4423 4424 exit: 4425 ath10k_htt_rx_msdu_buff_replenish(htt); 4426 /* In case of rx failure or more data to read, report budget 4427 * to reschedule NAPI poll 4428 */ 4429 done = resched_napi ? budget : quota; 4430 4431 return done; 4432 } 4433 EXPORT_SYMBOL(ath10k_htt_txrx_compl_task); 4434 4435 static const struct ath10k_htt_rx_ops htt_rx_ops_32 = { 4436 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32, 4437 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32, 4438 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32, 4439 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32, 4440 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32, 4441 }; 4442 4443 static const struct ath10k_htt_rx_ops htt_rx_ops_64 = { 4444 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64, 4445 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64, 4446 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64, 4447 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64, 4448 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64, 4449 }; 4450 4451 static const struct ath10k_htt_rx_ops htt_rx_ops_hl = { 4452 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl, 4453 }; 4454 4455 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt) 4456 { 4457 struct ath10k *ar = htt->ar; 4458 4459 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 4460 htt->rx_ops = &htt_rx_ops_hl; 4461 else if (ar->hw_params.target_64bit) 4462 htt->rx_ops = &htt_rx_ops_64; 4463 else 4464 htt->rx_ops = &htt_rx_ops_32; 4465 } 4466