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 ath10k_htt_config_paddrs_ring(htt, NULL); 305 306 dma_free_coherent(htt->ar->dev, 307 sizeof(*htt->rx_ring.alloc_idx.vaddr), 308 htt->rx_ring.alloc_idx.vaddr, 309 htt->rx_ring.alloc_idx.paddr); 310 htt->rx_ring.alloc_idx.vaddr = NULL; 311 312 kfree(htt->rx_ring.netbufs_ring); 313 htt->rx_ring.netbufs_ring = NULL; 314 } 315 316 static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt) 317 { 318 struct ath10k *ar = htt->ar; 319 int idx; 320 struct sk_buff *msdu; 321 322 lockdep_assert_held(&htt->rx_ring.lock); 323 324 if (htt->rx_ring.fill_cnt == 0) { 325 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n"); 326 return NULL; 327 } 328 329 idx = htt->rx_ring.sw_rd_idx.msdu_payld; 330 msdu = htt->rx_ring.netbufs_ring[idx]; 331 htt->rx_ring.netbufs_ring[idx] = NULL; 332 ath10k_htt_reset_paddrs_ring(htt, idx); 333 334 idx++; 335 idx &= htt->rx_ring.size_mask; 336 htt->rx_ring.sw_rd_idx.msdu_payld = idx; 337 htt->rx_ring.fill_cnt--; 338 339 dma_unmap_single(htt->ar->dev, 340 ATH10K_SKB_RXCB(msdu)->paddr, 341 msdu->len + skb_tailroom(msdu), 342 DMA_FROM_DEVICE); 343 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 344 msdu->data, msdu->len + skb_tailroom(msdu)); 345 346 return msdu; 347 } 348 349 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */ 350 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt, 351 struct sk_buff_head *amsdu) 352 { 353 struct ath10k *ar = htt->ar; 354 struct ath10k_hw_params *hw = &ar->hw_params; 355 int msdu_len, msdu_chaining = 0; 356 struct sk_buff *msdu; 357 struct htt_rx_desc *rx_desc; 358 struct rx_attention *rx_desc_attention; 359 struct rx_frag_info_common *rx_desc_frag_info_common; 360 struct rx_msdu_start_common *rx_desc_msdu_start_common; 361 struct rx_msdu_end_common *rx_desc_msdu_end_common; 362 363 lockdep_assert_held(&htt->rx_ring.lock); 364 365 for (;;) { 366 int last_msdu, msdu_len_invalid, msdu_chained; 367 368 msdu = ath10k_htt_rx_netbuf_pop(htt); 369 if (!msdu) { 370 __skb_queue_purge(amsdu); 371 return -ENOENT; 372 } 373 374 __skb_queue_tail(amsdu, msdu); 375 376 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 377 rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc); 378 rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, 379 rx_desc); 380 rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc); 381 rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc); 382 383 /* FIXME: we must report msdu payload since this is what caller 384 * expects now 385 */ 386 skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 387 skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 388 389 /* 390 * Sanity check - confirm the HW is finished filling in the 391 * rx data. 392 * If the HW and SW are working correctly, then it's guaranteed 393 * that the HW's MAC DMA is done before this point in the SW. 394 * To prevent the case that we handle a stale Rx descriptor, 395 * just assert for now until we have a way to recover. 396 */ 397 if (!(__le32_to_cpu(rx_desc_attention->flags) 398 & RX_ATTENTION_FLAGS_MSDU_DONE)) { 399 __skb_queue_purge(amsdu); 400 return -EIO; 401 } 402 403 msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags) 404 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR | 405 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR)); 406 msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0), 407 RX_MSDU_START_INFO0_MSDU_LENGTH); 408 msdu_chained = rx_desc_frag_info_common->ring2_more_count; 409 410 if (msdu_len_invalid) 411 msdu_len = 0; 412 413 skb_trim(msdu, 0); 414 skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw))); 415 msdu_len -= msdu->len; 416 417 /* Note: Chained buffers do not contain rx descriptor */ 418 while (msdu_chained--) { 419 msdu = ath10k_htt_rx_netbuf_pop(htt); 420 if (!msdu) { 421 __skb_queue_purge(amsdu); 422 return -ENOENT; 423 } 424 425 __skb_queue_tail(amsdu, msdu); 426 skb_trim(msdu, 0); 427 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE)); 428 msdu_len -= msdu->len; 429 msdu_chaining = 1; 430 } 431 432 last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) & 433 RX_MSDU_END_INFO0_LAST_MSDU; 434 435 /* FIXME: why are we skipping the first part of the rx_desc? */ 436 trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32), 437 hw->rx_desc_ops->rx_desc_size - sizeof(u32)); 438 439 if (last_msdu) 440 break; 441 } 442 443 if (skb_queue_empty(amsdu)) 444 msdu_chaining = -1; 445 446 /* 447 * Don't refill the ring yet. 448 * 449 * First, the elements popped here are still in use - it is not 450 * safe to overwrite them until the matching call to 451 * mpdu_desc_list_next. Second, for efficiency it is preferable to 452 * refill the rx ring with 1 PPDU's worth of rx buffers (something 453 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers 454 * (something like 3 buffers). Consequently, we'll rely on the txrx 455 * SW to tell us when it is done pulling all the PPDU's rx buffers 456 * out of the rx ring, and then refill it just once. 457 */ 458 459 return msdu_chaining; 460 } 461 462 static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt, 463 u64 paddr) 464 { 465 struct ath10k *ar = htt->ar; 466 struct ath10k_skb_rxcb *rxcb; 467 struct sk_buff *msdu; 468 469 lockdep_assert_held(&htt->rx_ring.lock); 470 471 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr); 472 if (!msdu) 473 return NULL; 474 475 rxcb = ATH10K_SKB_RXCB(msdu); 476 hash_del(&rxcb->hlist); 477 htt->rx_ring.fill_cnt--; 478 479 dma_unmap_single(htt->ar->dev, rxcb->paddr, 480 msdu->len + skb_tailroom(msdu), 481 DMA_FROM_DEVICE); 482 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 483 msdu->data, msdu->len + skb_tailroom(msdu)); 484 485 return msdu; 486 } 487 488 static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head, 489 struct sk_buff *frag_list, 490 unsigned int frag_len) 491 { 492 skb_shinfo(skb_head)->frag_list = frag_list; 493 skb_head->data_len = frag_len; 494 skb_head->len += skb_head->data_len; 495 } 496 497 static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt, 498 struct sk_buff *msdu, 499 struct htt_rx_in_ord_msdu_desc **msdu_desc) 500 { 501 struct ath10k *ar = htt->ar; 502 struct ath10k_hw_params *hw = &ar->hw_params; 503 u32 paddr; 504 struct sk_buff *frag_buf; 505 struct sk_buff *prev_frag_buf; 506 u8 last_frag; 507 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc; 508 struct htt_rx_desc *rxd; 509 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 510 511 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 512 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 513 514 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 515 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 516 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 517 amsdu_len -= msdu->len; 518 519 last_frag = ind_desc->reserved; 520 if (last_frag) { 521 if (amsdu_len) { 522 ath10k_warn(ar, "invalid amsdu len %u, left %d", 523 __le16_to_cpu(ind_desc->msdu_len), 524 amsdu_len); 525 } 526 return 0; 527 } 528 529 ind_desc++; 530 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 531 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 532 if (!frag_buf) { 533 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr); 534 return -ENOENT; 535 } 536 537 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 538 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 539 540 amsdu_len -= frag_buf->len; 541 prev_frag_buf = frag_buf; 542 last_frag = ind_desc->reserved; 543 while (!last_frag) { 544 ind_desc++; 545 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 546 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 547 if (!frag_buf) { 548 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x", 549 paddr); 550 prev_frag_buf->next = NULL; 551 return -ENOENT; 552 } 553 554 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 555 last_frag = ind_desc->reserved; 556 amsdu_len -= frag_buf->len; 557 558 prev_frag_buf->next = frag_buf; 559 prev_frag_buf = frag_buf; 560 } 561 562 if (amsdu_len) { 563 ath10k_warn(ar, "invalid amsdu len %u, left %d", 564 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 565 } 566 567 *msdu_desc = ind_desc; 568 569 prev_frag_buf->next = NULL; 570 return 0; 571 } 572 573 static int 574 ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt, 575 struct sk_buff *msdu, 576 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc) 577 { 578 struct ath10k *ar = htt->ar; 579 struct ath10k_hw_params *hw = &ar->hw_params; 580 u64 paddr; 581 struct sk_buff *frag_buf; 582 struct sk_buff *prev_frag_buf; 583 u8 last_frag; 584 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc; 585 struct htt_rx_desc *rxd; 586 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 587 588 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 589 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 590 591 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 592 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 593 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 594 amsdu_len -= msdu->len; 595 596 last_frag = ind_desc->reserved; 597 if (last_frag) { 598 if (amsdu_len) { 599 ath10k_warn(ar, "invalid amsdu len %u, left %d", 600 __le16_to_cpu(ind_desc->msdu_len), 601 amsdu_len); 602 } 603 return 0; 604 } 605 606 ind_desc++; 607 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 608 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 609 if (!frag_buf) { 610 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr); 611 return -ENOENT; 612 } 613 614 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 615 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 616 617 amsdu_len -= frag_buf->len; 618 prev_frag_buf = frag_buf; 619 last_frag = ind_desc->reserved; 620 while (!last_frag) { 621 ind_desc++; 622 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 623 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 624 if (!frag_buf) { 625 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx", 626 paddr); 627 prev_frag_buf->next = NULL; 628 return -ENOENT; 629 } 630 631 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 632 last_frag = ind_desc->reserved; 633 amsdu_len -= frag_buf->len; 634 635 prev_frag_buf->next = frag_buf; 636 prev_frag_buf = frag_buf; 637 } 638 639 if (amsdu_len) { 640 ath10k_warn(ar, "invalid amsdu len %u, left %d", 641 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 642 } 643 644 *msdu_desc = ind_desc; 645 646 prev_frag_buf->next = NULL; 647 return 0; 648 } 649 650 static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt, 651 struct htt_rx_in_ord_ind *ev, 652 struct sk_buff_head *list) 653 { 654 struct ath10k *ar = htt->ar; 655 struct ath10k_hw_params *hw = &ar->hw_params; 656 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32; 657 struct htt_rx_desc *rxd; 658 struct rx_attention *rxd_attention; 659 struct sk_buff *msdu; 660 int msdu_count, ret; 661 bool is_offload; 662 u32 paddr; 663 664 lockdep_assert_held(&htt->rx_ring.lock); 665 666 msdu_count = __le16_to_cpu(ev->msdu_count); 667 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 668 669 while (msdu_count--) { 670 paddr = __le32_to_cpu(msdu_desc->msdu_paddr); 671 672 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 673 if (!msdu) { 674 __skb_queue_purge(list); 675 return -ENOENT; 676 } 677 678 if (!is_offload && ar->monitor_arvif) { 679 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu, 680 &msdu_desc); 681 if (ret) { 682 __skb_queue_purge(list); 683 return ret; 684 } 685 __skb_queue_tail(list, msdu); 686 msdu_desc++; 687 continue; 688 } 689 690 __skb_queue_tail(list, msdu); 691 692 if (!is_offload) { 693 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 694 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 695 696 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 697 698 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 699 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 700 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 701 702 if (!(__le32_to_cpu(rxd_attention->flags) & 703 RX_ATTENTION_FLAGS_MSDU_DONE)) { 704 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 705 return -EIO; 706 } 707 } 708 709 msdu_desc++; 710 } 711 712 return 0; 713 } 714 715 static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt, 716 struct htt_rx_in_ord_ind *ev, 717 struct sk_buff_head *list) 718 { 719 struct ath10k *ar = htt->ar; 720 struct ath10k_hw_params *hw = &ar->hw_params; 721 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64; 722 struct htt_rx_desc *rxd; 723 struct rx_attention *rxd_attention; 724 struct sk_buff *msdu; 725 int msdu_count, ret; 726 bool is_offload; 727 u64 paddr; 728 729 lockdep_assert_held(&htt->rx_ring.lock); 730 731 msdu_count = __le16_to_cpu(ev->msdu_count); 732 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 733 734 while (msdu_count--) { 735 paddr = __le64_to_cpu(msdu_desc->msdu_paddr); 736 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 737 if (!msdu) { 738 __skb_queue_purge(list); 739 return -ENOENT; 740 } 741 742 if (!is_offload && ar->monitor_arvif) { 743 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu, 744 &msdu_desc); 745 if (ret) { 746 __skb_queue_purge(list); 747 return ret; 748 } 749 __skb_queue_tail(list, msdu); 750 msdu_desc++; 751 continue; 752 } 753 754 __skb_queue_tail(list, msdu); 755 756 if (!is_offload) { 757 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 758 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 759 760 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 761 762 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 763 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 764 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 765 766 if (!(__le32_to_cpu(rxd_attention->flags) & 767 RX_ATTENTION_FLAGS_MSDU_DONE)) { 768 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 769 return -EIO; 770 } 771 } 772 773 msdu_desc++; 774 } 775 776 return 0; 777 } 778 779 int ath10k_htt_rx_alloc(struct ath10k_htt *htt) 780 { 781 struct ath10k *ar = htt->ar; 782 dma_addr_t paddr; 783 void *vaddr, *vaddr_ring; 784 size_t size; 785 struct timer_list *timer = &htt->rx_ring.refill_retry_timer; 786 787 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 788 return 0; 789 790 htt->rx_confused = false; 791 792 /* XXX: The fill level could be changed during runtime in response to 793 * the host processing latency. Is this really worth it? 794 */ 795 htt->rx_ring.size = HTT_RX_RING_SIZE; 796 htt->rx_ring.size_mask = htt->rx_ring.size - 1; 797 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level; 798 799 if (!is_power_of_2(htt->rx_ring.size)) { 800 ath10k_warn(ar, "htt rx ring size is not power of 2\n"); 801 return -EINVAL; 802 } 803 804 htt->rx_ring.netbufs_ring = 805 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *), 806 GFP_KERNEL); 807 if (!htt->rx_ring.netbufs_ring) 808 goto err_netbuf; 809 810 size = ath10k_htt_get_rx_ring_size(htt); 811 812 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL); 813 if (!vaddr_ring) 814 goto err_dma_ring; 815 816 ath10k_htt_config_paddrs_ring(htt, vaddr_ring); 817 htt->rx_ring.base_paddr = paddr; 818 819 vaddr = dma_alloc_coherent(htt->ar->dev, 820 sizeof(*htt->rx_ring.alloc_idx.vaddr), 821 &paddr, GFP_KERNEL); 822 if (!vaddr) 823 goto err_dma_idx; 824 825 htt->rx_ring.alloc_idx.vaddr = vaddr; 826 htt->rx_ring.alloc_idx.paddr = paddr; 827 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask; 828 *htt->rx_ring.alloc_idx.vaddr = 0; 829 830 /* Initialize the Rx refill retry timer */ 831 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0); 832 833 spin_lock_init(&htt->rx_ring.lock); 834 835 htt->rx_ring.fill_cnt = 0; 836 htt->rx_ring.sw_rd_idx.msdu_payld = 0; 837 hash_init(htt->rx_ring.skb_table); 838 839 skb_queue_head_init(&htt->rx_msdus_q); 840 skb_queue_head_init(&htt->rx_in_ord_compl_q); 841 skb_queue_head_init(&htt->tx_fetch_ind_q); 842 atomic_set(&htt->num_mpdus_ready, 0); 843 844 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n", 845 htt->rx_ring.size, htt->rx_ring.fill_level); 846 return 0; 847 848 err_dma_idx: 849 dma_free_coherent(htt->ar->dev, 850 ath10k_htt_get_rx_ring_size(htt), 851 vaddr_ring, 852 htt->rx_ring.base_paddr); 853 ath10k_htt_config_paddrs_ring(htt, NULL); 854 err_dma_ring: 855 kfree(htt->rx_ring.netbufs_ring); 856 htt->rx_ring.netbufs_ring = NULL; 857 err_netbuf: 858 return -ENOMEM; 859 } 860 861 static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar, 862 enum htt_rx_mpdu_encrypt_type type) 863 { 864 switch (type) { 865 case HTT_RX_MPDU_ENCRYPT_NONE: 866 return 0; 867 case HTT_RX_MPDU_ENCRYPT_WEP40: 868 case HTT_RX_MPDU_ENCRYPT_WEP104: 869 return IEEE80211_WEP_IV_LEN; 870 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 871 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 872 return IEEE80211_TKIP_IV_LEN; 873 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 874 return IEEE80211_CCMP_HDR_LEN; 875 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 876 return IEEE80211_CCMP_256_HDR_LEN; 877 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 878 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 879 return IEEE80211_GCMP_HDR_LEN; 880 case HTT_RX_MPDU_ENCRYPT_WEP128: 881 case HTT_RX_MPDU_ENCRYPT_WAPI: 882 break; 883 } 884 885 ath10k_warn(ar, "unsupported encryption type %d\n", type); 886 return 0; 887 } 888 889 #define MICHAEL_MIC_LEN 8 890 891 static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar, 892 enum htt_rx_mpdu_encrypt_type type) 893 { 894 switch (type) { 895 case HTT_RX_MPDU_ENCRYPT_NONE: 896 case HTT_RX_MPDU_ENCRYPT_WEP40: 897 case HTT_RX_MPDU_ENCRYPT_WEP104: 898 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 899 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 900 return 0; 901 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 902 return IEEE80211_CCMP_MIC_LEN; 903 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 904 return IEEE80211_CCMP_256_MIC_LEN; 905 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 906 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 907 return IEEE80211_GCMP_MIC_LEN; 908 case HTT_RX_MPDU_ENCRYPT_WEP128: 909 case HTT_RX_MPDU_ENCRYPT_WAPI: 910 break; 911 } 912 913 ath10k_warn(ar, "unsupported encryption type %d\n", type); 914 return 0; 915 } 916 917 static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar, 918 enum htt_rx_mpdu_encrypt_type type) 919 { 920 switch (type) { 921 case HTT_RX_MPDU_ENCRYPT_NONE: 922 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 923 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 924 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 925 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 926 return 0; 927 case HTT_RX_MPDU_ENCRYPT_WEP40: 928 case HTT_RX_MPDU_ENCRYPT_WEP104: 929 return IEEE80211_WEP_ICV_LEN; 930 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 931 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 932 return IEEE80211_TKIP_ICV_LEN; 933 case HTT_RX_MPDU_ENCRYPT_WEP128: 934 case HTT_RX_MPDU_ENCRYPT_WAPI: 935 break; 936 } 937 938 ath10k_warn(ar, "unsupported encryption type %d\n", type); 939 return 0; 940 } 941 942 struct amsdu_subframe_hdr { 943 u8 dst[ETH_ALEN]; 944 u8 src[ETH_ALEN]; 945 __be16 len; 946 } __packed; 947 948 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63) 949 950 static inline u8 ath10k_bw_to_mac80211_bw(u8 bw) 951 { 952 u8 ret = 0; 953 954 switch (bw) { 955 case 0: 956 ret = RATE_INFO_BW_20; 957 break; 958 case 1: 959 ret = RATE_INFO_BW_40; 960 break; 961 case 2: 962 ret = RATE_INFO_BW_80; 963 break; 964 case 3: 965 ret = RATE_INFO_BW_160; 966 break; 967 } 968 969 return ret; 970 } 971 972 static void ath10k_htt_rx_h_rates(struct ath10k *ar, 973 struct ieee80211_rx_status *status, 974 struct htt_rx_desc *rxd) 975 { 976 struct ath10k_hw_params *hw = &ar->hw_params; 977 struct rx_attention *rxd_attention; 978 struct rx_mpdu_start *rxd_mpdu_start; 979 struct rx_mpdu_end *rxd_mpdu_end; 980 struct rx_msdu_start_common *rxd_msdu_start_common; 981 struct rx_msdu_end_common *rxd_msdu_end_common; 982 struct rx_ppdu_start *rxd_ppdu_start; 983 struct ieee80211_supported_band *sband; 984 u8 cck, rate, bw, sgi, mcs, nss; 985 u8 *rxd_msdu_payload; 986 u8 preamble = 0; 987 u8 group_id; 988 u32 info1, info2, info3; 989 u32 stbc, nsts_su; 990 991 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 992 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 993 rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd); 994 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 995 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 996 rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 997 rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd); 998 999 info1 = __le32_to_cpu(rxd_ppdu_start->info1); 1000 info2 = __le32_to_cpu(rxd_ppdu_start->info2); 1001 info3 = __le32_to_cpu(rxd_ppdu_start->info3); 1002 1003 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE); 1004 1005 switch (preamble) { 1006 case HTT_RX_LEGACY: 1007 /* To get legacy rate index band is required. Since band can't 1008 * be undefined check if freq is non-zero. 1009 */ 1010 if (!status->freq) 1011 return; 1012 1013 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT; 1014 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE); 1015 rate &= ~RX_PPDU_START_RATE_FLAG; 1016 1017 sband = &ar->mac.sbands[status->band]; 1018 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck); 1019 break; 1020 case HTT_RX_HT: 1021 case HTT_RX_HT_WITH_TXBF: 1022 /* HT-SIG - Table 20-11 in info2 and info3 */ 1023 mcs = info2 & 0x1F; 1024 nss = mcs >> 3; 1025 bw = (info2 >> 7) & 1; 1026 sgi = (info3 >> 7) & 1; 1027 1028 status->rate_idx = mcs; 1029 status->encoding = RX_ENC_HT; 1030 if (sgi) 1031 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1032 if (bw) 1033 status->bw = RATE_INFO_BW_40; 1034 break; 1035 case HTT_RX_VHT: 1036 case HTT_RX_VHT_WITH_TXBF: 1037 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3 1038 * TODO check this 1039 */ 1040 bw = info2 & 3; 1041 sgi = info3 & 1; 1042 stbc = (info2 >> 3) & 1; 1043 group_id = (info2 >> 4) & 0x3F; 1044 1045 if (GROUP_ID_IS_SU_MIMO(group_id)) { 1046 mcs = (info3 >> 4) & 0x0F; 1047 nsts_su = ((info2 >> 10) & 0x07); 1048 if (stbc) 1049 nss = (nsts_su >> 2) + 1; 1050 else 1051 nss = (nsts_su + 1); 1052 } else { 1053 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor 1054 * so it's impossible to decode MCS. Also since 1055 * firmware consumes Group Id Management frames host 1056 * has no knowledge regarding group/user position 1057 * mapping so it's impossible to pick the correct Nsts 1058 * from VHT-SIG-A1. 1059 * 1060 * Bandwidth and SGI are valid so report the rateinfo 1061 * on best-effort basis. 1062 */ 1063 mcs = 0; 1064 nss = 1; 1065 } 1066 1067 if (mcs > 0x09) { 1068 ath10k_warn(ar, "invalid MCS received %u\n", mcs); 1069 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n", 1070 __le32_to_cpu(rxd_attention->flags), 1071 __le32_to_cpu(rxd_mpdu_start->info0), 1072 __le32_to_cpu(rxd_mpdu_start->info1), 1073 __le32_to_cpu(rxd_msdu_start_common->info0), 1074 __le32_to_cpu(rxd_msdu_start_common->info1), 1075 rxd_ppdu_start->info0, 1076 __le32_to_cpu(rxd_ppdu_start->info1), 1077 __le32_to_cpu(rxd_ppdu_start->info2), 1078 __le32_to_cpu(rxd_ppdu_start->info3), 1079 __le32_to_cpu(rxd_ppdu_start->info4)); 1080 1081 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n", 1082 __le32_to_cpu(rxd_msdu_end_common->info0), 1083 __le32_to_cpu(rxd_mpdu_end->info0)); 1084 1085 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, 1086 "rx desc msdu payload: ", 1087 rxd_msdu_payload, 50); 1088 } 1089 1090 status->rate_idx = mcs; 1091 status->nss = nss; 1092 1093 if (sgi) 1094 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1095 1096 status->bw = ath10k_bw_to_mac80211_bw(bw); 1097 status->encoding = RX_ENC_VHT; 1098 break; 1099 default: 1100 break; 1101 } 1102 } 1103 1104 static struct ieee80211_channel * 1105 ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) 1106 { 1107 struct ath10k_hw_params *hw = &ar->hw_params; 1108 struct rx_attention *rxd_attention; 1109 struct rx_msdu_end_common *rxd_msdu_end_common; 1110 struct rx_mpdu_start *rxd_mpdu_start; 1111 struct ath10k_peer *peer; 1112 struct ath10k_vif *arvif; 1113 struct cfg80211_chan_def def; 1114 u16 peer_id; 1115 1116 lockdep_assert_held(&ar->data_lock); 1117 1118 if (!rxd) 1119 return NULL; 1120 1121 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1122 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1123 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1124 1125 if (rxd_attention->flags & 1126 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) 1127 return NULL; 1128 1129 if (!(rxd_msdu_end_common->info0 & 1130 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) 1131 return NULL; 1132 1133 peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1134 RX_MPDU_START_INFO0_PEER_IDX); 1135 1136 peer = ath10k_peer_find_by_id(ar, peer_id); 1137 if (!peer) 1138 return NULL; 1139 1140 arvif = ath10k_get_arvif(ar, peer->vdev_id); 1141 if (WARN_ON_ONCE(!arvif)) 1142 return NULL; 1143 1144 if (ath10k_mac_vif_chan(arvif->vif, &def)) 1145 return NULL; 1146 1147 return def.chan; 1148 } 1149 1150 static struct ieee80211_channel * 1151 ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) 1152 { 1153 struct ath10k_vif *arvif; 1154 struct cfg80211_chan_def def; 1155 1156 lockdep_assert_held(&ar->data_lock); 1157 1158 list_for_each_entry(arvif, &ar->arvifs, list) { 1159 if (arvif->vdev_id == vdev_id && 1160 ath10k_mac_vif_chan(arvif->vif, &def) == 0) 1161 return def.chan; 1162 } 1163 1164 return NULL; 1165 } 1166 1167 static void 1168 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, 1169 struct ieee80211_chanctx_conf *conf, 1170 void *data) 1171 { 1172 struct cfg80211_chan_def *def = data; 1173 1174 *def = conf->def; 1175 } 1176 1177 static struct ieee80211_channel * 1178 ath10k_htt_rx_h_any_channel(struct ath10k *ar) 1179 { 1180 struct cfg80211_chan_def def = {}; 1181 1182 ieee80211_iter_chan_contexts_atomic(ar->hw, 1183 ath10k_htt_rx_h_any_chan_iter, 1184 &def); 1185 1186 return def.chan; 1187 } 1188 1189 static bool ath10k_htt_rx_h_channel(struct ath10k *ar, 1190 struct ieee80211_rx_status *status, 1191 struct htt_rx_desc *rxd, 1192 u32 vdev_id) 1193 { 1194 struct ieee80211_channel *ch; 1195 1196 spin_lock_bh(&ar->data_lock); 1197 ch = ar->scan_channel; 1198 if (!ch) 1199 ch = ar->rx_channel; 1200 if (!ch) 1201 ch = ath10k_htt_rx_h_peer_channel(ar, rxd); 1202 if (!ch) 1203 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); 1204 if (!ch) 1205 ch = ath10k_htt_rx_h_any_channel(ar); 1206 if (!ch) 1207 ch = ar->tgt_oper_chan; 1208 spin_unlock_bh(&ar->data_lock); 1209 1210 if (!ch) 1211 return false; 1212 1213 status->band = ch->band; 1214 status->freq = ch->center_freq; 1215 1216 return true; 1217 } 1218 1219 static void ath10k_htt_rx_h_signal(struct ath10k *ar, 1220 struct ieee80211_rx_status *status, 1221 struct htt_rx_desc *rxd) 1222 { 1223 struct ath10k_hw_params *hw = &ar->hw_params; 1224 struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 1225 int i; 1226 1227 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) { 1228 status->chains &= ~BIT(i); 1229 1230 if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) { 1231 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR + 1232 rxd_ppdu_start->rssi_chains[i].pri20_mhz; 1233 1234 status->chains |= BIT(i); 1235 } 1236 } 1237 1238 /* FIXME: Get real NF */ 1239 status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 1240 rxd_ppdu_start->rssi_comb; 1241 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 1242 } 1243 1244 static void ath10k_htt_rx_h_mactime(struct ath10k *ar, 1245 struct ieee80211_rx_status *status, 1246 struct htt_rx_desc *rxd) 1247 { 1248 struct ath10k_hw_params *hw = &ar->hw_params; 1249 struct rx_ppdu_end_common *rxd_ppdu_end_common; 1250 1251 rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd); 1252 1253 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This 1254 * means all prior MSDUs in a PPDU are reported to mac80211 without the 1255 * TSF. Is it worth holding frames until end of PPDU is known? 1256 * 1257 * FIXME: Can we get/compute 64bit TSF? 1258 */ 1259 status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp); 1260 status->flag |= RX_FLAG_MACTIME_END; 1261 } 1262 1263 static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, 1264 struct sk_buff_head *amsdu, 1265 struct ieee80211_rx_status *status, 1266 u32 vdev_id) 1267 { 1268 struct sk_buff *first; 1269 struct ath10k_hw_params *hw = &ar->hw_params; 1270 struct htt_rx_desc *rxd; 1271 struct rx_attention *rxd_attention; 1272 bool is_first_ppdu; 1273 bool is_last_ppdu; 1274 1275 if (skb_queue_empty(amsdu)) 1276 return; 1277 1278 first = skb_peek(amsdu); 1279 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1280 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1281 1282 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1283 1284 is_first_ppdu = !!(rxd_attention->flags & 1285 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU)); 1286 is_last_ppdu = !!(rxd_attention->flags & 1287 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU)); 1288 1289 if (is_first_ppdu) { 1290 /* New PPDU starts so clear out the old per-PPDU status. */ 1291 status->freq = 0; 1292 status->rate_idx = 0; 1293 status->nss = 0; 1294 status->encoding = RX_ENC_LEGACY; 1295 status->bw = RATE_INFO_BW_20; 1296 1297 status->flag &= ~RX_FLAG_MACTIME_END; 1298 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 1299 1300 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST); 1301 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; 1302 status->ampdu_reference = ar->ampdu_reference; 1303 1304 ath10k_htt_rx_h_signal(ar, status, rxd); 1305 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); 1306 ath10k_htt_rx_h_rates(ar, status, rxd); 1307 } 1308 1309 if (is_last_ppdu) { 1310 ath10k_htt_rx_h_mactime(ar, status, rxd); 1311 1312 /* set ampdu last segment flag */ 1313 status->flag |= RX_FLAG_AMPDU_IS_LAST; 1314 ar->ampdu_reference++; 1315 } 1316 } 1317 1318 static const char * const tid_to_ac[] = { 1319 "BE", 1320 "BK", 1321 "BK", 1322 "BE", 1323 "VI", 1324 "VI", 1325 "VO", 1326 "VO", 1327 }; 1328 1329 static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) 1330 { 1331 u8 *qc; 1332 int tid; 1333 1334 if (!ieee80211_is_data_qos(hdr->frame_control)) 1335 return ""; 1336 1337 qc = ieee80211_get_qos_ctl(hdr); 1338 tid = *qc & IEEE80211_QOS_CTL_TID_MASK; 1339 if (tid < 8) 1340 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]); 1341 else 1342 snprintf(out, size, "tid %d", tid); 1343 1344 return out; 1345 } 1346 1347 static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar, 1348 struct ieee80211_rx_status *rx_status, 1349 struct sk_buff *skb) 1350 { 1351 struct ieee80211_rx_status *status; 1352 1353 status = IEEE80211_SKB_RXCB(skb); 1354 *status = *rx_status; 1355 1356 skb_queue_tail(&ar->htt.rx_msdus_q, skb); 1357 } 1358 1359 static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb) 1360 { 1361 struct ieee80211_rx_status *status; 1362 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 1363 char tid[32]; 1364 1365 status = IEEE80211_SKB_RXCB(skb); 1366 1367 if (!(ar->filter_flags & FIF_FCSFAIL) && 1368 status->flag & RX_FLAG_FAILED_FCS_CRC) { 1369 ar->stats.rx_crc_err_drop++; 1370 dev_kfree_skb_any(skb); 1371 return; 1372 } 1373 1374 ath10k_dbg(ar, ATH10K_DBG_DATA, 1375 "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", 1376 skb, 1377 skb->len, 1378 ieee80211_get_SA(hdr), 1379 ath10k_get_tid(hdr, tid, sizeof(tid)), 1380 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ? 1381 "mcast" : "ucast", 1382 (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4, 1383 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "", 1384 (status->encoding == RX_ENC_HT) ? "ht" : "", 1385 (status->encoding == RX_ENC_VHT) ? "vht" : "", 1386 (status->bw == RATE_INFO_BW_40) ? "40" : "", 1387 (status->bw == RATE_INFO_BW_80) ? "80" : "", 1388 (status->bw == RATE_INFO_BW_160) ? "160" : "", 1389 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "", 1390 status->rate_idx, 1391 status->nss, 1392 status->freq, 1393 status->band, status->flag, 1394 !!(status->flag & RX_FLAG_FAILED_FCS_CRC), 1395 !!(status->flag & RX_FLAG_MMIC_ERROR), 1396 !!(status->flag & RX_FLAG_AMSDU_MORE)); 1397 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ", 1398 skb->data, skb->len); 1399 trace_ath10k_rx_hdr(ar, skb->data, skb->len); 1400 trace_ath10k_rx_payload(ar, skb->data, skb->len); 1401 1402 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 1403 } 1404 1405 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar, 1406 struct ieee80211_hdr *hdr) 1407 { 1408 int len = ieee80211_hdrlen(hdr->frame_control); 1409 1410 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING, 1411 ar->running_fw->fw_file.fw_features)) 1412 len = round_up(len, 4); 1413 1414 return len; 1415 } 1416 1417 static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, 1418 struct sk_buff *msdu, 1419 struct ieee80211_rx_status *status, 1420 enum htt_rx_mpdu_encrypt_type enctype, 1421 bool is_decrypted, 1422 const u8 first_hdr[64]) 1423 { 1424 struct ieee80211_hdr *hdr; 1425 struct ath10k_hw_params *hw = &ar->hw_params; 1426 struct htt_rx_desc *rxd; 1427 struct rx_msdu_end_common *rxd_msdu_end_common; 1428 size_t hdr_len; 1429 size_t crypto_len; 1430 bool is_first; 1431 bool is_last; 1432 bool msdu_limit_err; 1433 int bytes_aligned = ar->hw_params.decap_align_bytes; 1434 u8 *qos; 1435 1436 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1437 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1438 1439 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1440 is_first = !!(rxd_msdu_end_common->info0 & 1441 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1442 is_last = !!(rxd_msdu_end_common->info0 & 1443 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1444 1445 /* Delivered decapped frame: 1446 * [802.11 header] 1447 * [crypto param] <-- can be trimmed if !fcs_err && 1448 * !decrypt_err && !peer_idx_invalid 1449 * [amsdu header] <-- only if A-MSDU 1450 * [rfc1042/llc] 1451 * [payload] 1452 * [FCS] <-- at end, needs to be trimmed 1453 */ 1454 1455 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when 1456 * deaggregate, so that unwanted MSDU-deaggregation is avoided for 1457 * error packets. If limit exceeds, hw sends all remaining MSDUs as 1458 * a single last MSDU with this msdu limit error set. 1459 */ 1460 msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd); 1461 1462 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU 1463 * without first MSDU is expected in that case, and handled later here. 1464 */ 1465 /* This probably shouldn't happen but warn just in case */ 1466 if (WARN_ON_ONCE(!is_first && !msdu_limit_err)) 1467 return; 1468 1469 /* This probably shouldn't happen but warn just in case */ 1470 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err)) 1471 return; 1472 1473 skb_trim(msdu, msdu->len - FCS_LEN); 1474 1475 /* Push original 80211 header */ 1476 if (unlikely(msdu_limit_err)) { 1477 hdr = (struct ieee80211_hdr *)first_hdr; 1478 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1479 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1480 1481 if (ieee80211_is_data_qos(hdr->frame_control)) { 1482 qos = ieee80211_get_qos_ctl(hdr); 1483 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1484 } 1485 1486 if (crypto_len) 1487 memcpy(skb_push(msdu, crypto_len), 1488 (void *)hdr + round_up(hdr_len, bytes_aligned), 1489 crypto_len); 1490 1491 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1492 } 1493 1494 /* In most cases this will be true for sniffed frames. It makes sense 1495 * to deliver them as-is without stripping the crypto param. This is 1496 * necessary for software based decryption. 1497 * 1498 * If there's no error then the frame is decrypted. At least that is 1499 * the case for frames that come in via fragmented rx indication. 1500 */ 1501 if (!is_decrypted) 1502 return; 1503 1504 /* The payload is decrypted so strip crypto params. Start from tail 1505 * since hdr is used to compute some stuff. 1506 */ 1507 1508 hdr = (void *)msdu->data; 1509 1510 /* Tail */ 1511 if (status->flag & RX_FLAG_IV_STRIPPED) { 1512 skb_trim(msdu, msdu->len - 1513 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1514 1515 skb_trim(msdu, msdu->len - 1516 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1517 } else { 1518 /* MIC */ 1519 if (status->flag & RX_FLAG_MIC_STRIPPED) 1520 skb_trim(msdu, msdu->len - 1521 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1522 1523 /* ICV */ 1524 if (status->flag & RX_FLAG_ICV_STRIPPED) 1525 skb_trim(msdu, msdu->len - 1526 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1527 } 1528 1529 /* MMIC */ 1530 if ((status->flag & RX_FLAG_MMIC_STRIPPED) && 1531 !ieee80211_has_morefrags(hdr->frame_control) && 1532 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 1533 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN); 1534 1535 /* Head */ 1536 if (status->flag & RX_FLAG_IV_STRIPPED) { 1537 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1538 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1539 1540 memmove((void *)msdu->data + crypto_len, 1541 (void *)msdu->data, hdr_len); 1542 skb_pull(msdu, crypto_len); 1543 } 1544 } 1545 1546 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar, 1547 struct sk_buff *msdu, 1548 struct ieee80211_rx_status *status, 1549 const u8 first_hdr[64], 1550 enum htt_rx_mpdu_encrypt_type enctype) 1551 { 1552 struct ath10k_hw_params *hw = &ar->hw_params; 1553 struct ieee80211_hdr *hdr; 1554 struct htt_rx_desc *rxd; 1555 size_t hdr_len; 1556 u8 da[ETH_ALEN]; 1557 u8 sa[ETH_ALEN]; 1558 int l3_pad_bytes; 1559 int bytes_aligned = ar->hw_params.decap_align_bytes; 1560 1561 /* Delivered decapped frame: 1562 * [nwifi 802.11 header] <-- replaced with 802.11 hdr 1563 * [rfc1042/llc] 1564 * 1565 * Note: The nwifi header doesn't have QoS Control and is 1566 * (always?) a 3addr frame. 1567 * 1568 * Note2: There's no A-MSDU subframe header. Even if it's part 1569 * of an A-MSDU. 1570 */ 1571 1572 /* pull decapped header and copy SA & DA */ 1573 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data - 1574 hw->rx_desc_ops->rx_desc_size); 1575 1576 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1577 skb_put(msdu, l3_pad_bytes); 1578 1579 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes); 1580 1581 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr); 1582 ether_addr_copy(da, ieee80211_get_DA(hdr)); 1583 ether_addr_copy(sa, ieee80211_get_SA(hdr)); 1584 skb_pull(msdu, hdr_len); 1585 1586 /* push original 802.11 header */ 1587 hdr = (struct ieee80211_hdr *)first_hdr; 1588 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1589 1590 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1591 memcpy(skb_push(msdu, 1592 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1593 (void *)hdr + round_up(hdr_len, bytes_aligned), 1594 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1595 } 1596 1597 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1598 1599 /* original 802.11 header has a different DA and in 1600 * case of 4addr it may also have different SA 1601 */ 1602 hdr = (struct ieee80211_hdr *)msdu->data; 1603 ether_addr_copy(ieee80211_get_DA(hdr), da); 1604 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1605 } 1606 1607 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar, 1608 struct sk_buff *msdu, 1609 enum htt_rx_mpdu_encrypt_type enctype) 1610 { 1611 struct ieee80211_hdr *hdr; 1612 struct ath10k_hw_params *hw = &ar->hw_params; 1613 struct htt_rx_desc *rxd; 1614 struct rx_msdu_end_common *rxd_msdu_end_common; 1615 u8 *rxd_rx_hdr_status; 1616 size_t hdr_len, crypto_len; 1617 void *rfc1042; 1618 bool is_first, is_last, is_amsdu; 1619 int bytes_aligned = ar->hw_params.decap_align_bytes; 1620 1621 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1622 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1623 1624 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1625 rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1626 hdr = (void *)rxd_rx_hdr_status; 1627 1628 is_first = !!(rxd_msdu_end_common->info0 & 1629 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1630 is_last = !!(rxd_msdu_end_common->info0 & 1631 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1632 is_amsdu = !(is_first && is_last); 1633 1634 rfc1042 = hdr; 1635 1636 if (is_first) { 1637 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1638 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1639 1640 rfc1042 += round_up(hdr_len, bytes_aligned) + 1641 round_up(crypto_len, bytes_aligned); 1642 } 1643 1644 if (is_amsdu) 1645 rfc1042 += sizeof(struct amsdu_subframe_hdr); 1646 1647 return rfc1042; 1648 } 1649 1650 static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar, 1651 struct sk_buff *msdu, 1652 struct ieee80211_rx_status *status, 1653 const u8 first_hdr[64], 1654 enum htt_rx_mpdu_encrypt_type enctype) 1655 { 1656 struct ath10k_hw_params *hw = &ar->hw_params; 1657 struct ieee80211_hdr *hdr; 1658 struct ethhdr *eth; 1659 size_t hdr_len; 1660 void *rfc1042; 1661 u8 da[ETH_ALEN]; 1662 u8 sa[ETH_ALEN]; 1663 int l3_pad_bytes; 1664 struct htt_rx_desc *rxd; 1665 int bytes_aligned = ar->hw_params.decap_align_bytes; 1666 1667 /* Delivered decapped frame: 1668 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc 1669 * [payload] 1670 */ 1671 1672 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype); 1673 if (WARN_ON_ONCE(!rfc1042)) 1674 return; 1675 1676 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1677 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1678 1679 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1680 skb_put(msdu, l3_pad_bytes); 1681 skb_pull(msdu, l3_pad_bytes); 1682 1683 /* pull decapped header and copy SA & DA */ 1684 eth = (struct ethhdr *)msdu->data; 1685 ether_addr_copy(da, eth->h_dest); 1686 ether_addr_copy(sa, eth->h_source); 1687 skb_pull(msdu, sizeof(struct ethhdr)); 1688 1689 /* push rfc1042/llc/snap */ 1690 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042, 1691 sizeof(struct rfc1042_hdr)); 1692 1693 /* push original 802.11 header */ 1694 hdr = (struct ieee80211_hdr *)first_hdr; 1695 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1696 1697 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1698 memcpy(skb_push(msdu, 1699 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1700 (void *)hdr + round_up(hdr_len, bytes_aligned), 1701 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1702 } 1703 1704 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1705 1706 /* original 802.11 header has a different DA and in 1707 * case of 4addr it may also have different SA 1708 */ 1709 hdr = (struct ieee80211_hdr *)msdu->data; 1710 ether_addr_copy(ieee80211_get_DA(hdr), da); 1711 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1712 } 1713 1714 static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar, 1715 struct sk_buff *msdu, 1716 struct ieee80211_rx_status *status, 1717 const u8 first_hdr[64], 1718 enum htt_rx_mpdu_encrypt_type enctype) 1719 { 1720 struct ath10k_hw_params *hw = &ar->hw_params; 1721 struct ieee80211_hdr *hdr; 1722 size_t hdr_len; 1723 int l3_pad_bytes; 1724 struct htt_rx_desc *rxd; 1725 int bytes_aligned = ar->hw_params.decap_align_bytes; 1726 1727 /* Delivered decapped frame: 1728 * [amsdu header] <-- replaced with 802.11 hdr 1729 * [rfc1042/llc] 1730 * [payload] 1731 */ 1732 1733 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1734 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1735 1736 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1737 1738 skb_put(msdu, l3_pad_bytes); 1739 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes); 1740 1741 hdr = (struct ieee80211_hdr *)first_hdr; 1742 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1743 1744 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1745 memcpy(skb_push(msdu, 1746 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1747 (void *)hdr + round_up(hdr_len, bytes_aligned), 1748 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1749 } 1750 1751 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1752 } 1753 1754 static void ath10k_htt_rx_h_undecap(struct ath10k *ar, 1755 struct sk_buff *msdu, 1756 struct ieee80211_rx_status *status, 1757 u8 first_hdr[64], 1758 enum htt_rx_mpdu_encrypt_type enctype, 1759 bool is_decrypted) 1760 { 1761 struct ath10k_hw_params *hw = &ar->hw_params; 1762 struct htt_rx_desc *rxd; 1763 struct rx_msdu_start_common *rxd_msdu_start_common; 1764 enum rx_msdu_decap_format decap; 1765 1766 /* First msdu's decapped header: 1767 * [802.11 header] <-- padded to 4 bytes long 1768 * [crypto param] <-- padded to 4 bytes long 1769 * [amsdu header] <-- only if A-MSDU 1770 * [rfc1042/llc] 1771 * 1772 * Other (2nd, 3rd, ..) msdu's decapped header: 1773 * [amsdu header] <-- only if A-MSDU 1774 * [rfc1042/llc] 1775 */ 1776 1777 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1778 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1779 1780 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1781 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 1782 RX_MSDU_START_INFO1_DECAP_FORMAT); 1783 1784 switch (decap) { 1785 case RX_MSDU_DECAP_RAW: 1786 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype, 1787 is_decrypted, first_hdr); 1788 break; 1789 case RX_MSDU_DECAP_NATIVE_WIFI: 1790 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr, 1791 enctype); 1792 break; 1793 case RX_MSDU_DECAP_ETHERNET2_DIX: 1794 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype); 1795 break; 1796 case RX_MSDU_DECAP_8023_SNAP_LLC: 1797 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr, 1798 enctype); 1799 break; 1800 } 1801 } 1802 1803 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb) 1804 { 1805 struct htt_rx_desc *rxd; 1806 struct rx_attention *rxd_attention; 1807 struct rx_msdu_start_common *rxd_msdu_start_common; 1808 u32 flags, info; 1809 bool is_ip4, is_ip6; 1810 bool is_tcp, is_udp; 1811 bool ip_csum_ok, tcpudp_csum_ok; 1812 1813 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1814 (void *)skb->data - hw->rx_desc_ops->rx_desc_size); 1815 1816 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1817 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1818 flags = __le32_to_cpu(rxd_attention->flags); 1819 info = __le32_to_cpu(rxd_msdu_start_common->info1); 1820 1821 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO); 1822 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO); 1823 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO); 1824 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO); 1825 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL); 1826 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL); 1827 1828 if (!is_ip4 && !is_ip6) 1829 return CHECKSUM_NONE; 1830 if (!is_tcp && !is_udp) 1831 return CHECKSUM_NONE; 1832 if (!ip_csum_ok) 1833 return CHECKSUM_NONE; 1834 if (!tcpudp_csum_ok) 1835 return CHECKSUM_NONE; 1836 1837 return CHECKSUM_UNNECESSARY; 1838 } 1839 1840 static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw, 1841 struct sk_buff *msdu) 1842 { 1843 msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu); 1844 } 1845 1846 static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, 1847 u16 offset, 1848 enum htt_rx_mpdu_encrypt_type enctype) 1849 { 1850 struct ieee80211_hdr *hdr; 1851 u64 pn = 0; 1852 u8 *ehdr; 1853 1854 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1855 ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control); 1856 1857 if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) { 1858 pn = ehdr[0]; 1859 pn |= (u64)ehdr[1] << 8; 1860 pn |= (u64)ehdr[4] << 16; 1861 pn |= (u64)ehdr[5] << 24; 1862 pn |= (u64)ehdr[6] << 32; 1863 pn |= (u64)ehdr[7] << 40; 1864 } 1865 return pn; 1866 } 1867 1868 static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, 1869 struct sk_buff *skb, 1870 u16 offset) 1871 { 1872 struct ieee80211_hdr *hdr; 1873 1874 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1875 return !is_multicast_ether_addr(hdr->addr1); 1876 } 1877 1878 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, 1879 struct sk_buff *skb, 1880 u16 peer_id, 1881 u16 offset, 1882 enum htt_rx_mpdu_encrypt_type enctype) 1883 { 1884 struct ath10k_peer *peer; 1885 union htt_rx_pn_t *last_pn, new_pn = {0}; 1886 struct ieee80211_hdr *hdr; 1887 u8 tid, frag_number; 1888 u32 seq; 1889 1890 peer = ath10k_peer_find_by_id(ar, peer_id); 1891 if (!peer) { 1892 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); 1893 return false; 1894 } 1895 1896 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1897 if (ieee80211_is_data_qos(hdr->frame_control)) 1898 tid = ieee80211_get_tid(hdr); 1899 else 1900 tid = ATH10K_TXRX_NON_QOS_TID; 1901 1902 last_pn = &peer->frag_tids_last_pn[tid]; 1903 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype); 1904 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; 1905 seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 1906 1907 if (frag_number == 0) { 1908 last_pn->pn48 = new_pn.pn48; 1909 peer->frag_tids_seq[tid] = seq; 1910 } else { 1911 if (seq != peer->frag_tids_seq[tid]) 1912 return false; 1913 1914 if (new_pn.pn48 != last_pn->pn48 + 1) 1915 return false; 1916 1917 last_pn->pn48 = new_pn.pn48; 1918 } 1919 1920 return true; 1921 } 1922 1923 static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 1924 struct sk_buff_head *amsdu, 1925 struct ieee80211_rx_status *status, 1926 bool fill_crypt_header, 1927 u8 *rx_hdr, 1928 enum ath10k_pkt_rx_err *err, 1929 u16 peer_id, 1930 bool frag) 1931 { 1932 struct sk_buff *first; 1933 struct sk_buff *last; 1934 struct sk_buff *msdu, *temp; 1935 struct ath10k_hw_params *hw = &ar->hw_params; 1936 struct htt_rx_desc *rxd; 1937 struct rx_attention *rxd_attention; 1938 struct rx_mpdu_start *rxd_mpdu_start; 1939 1940 struct ieee80211_hdr *hdr; 1941 enum htt_rx_mpdu_encrypt_type enctype; 1942 u8 first_hdr[64]; 1943 u8 *qos; 1944 bool has_fcs_err; 1945 bool has_crypto_err; 1946 bool has_tkip_err; 1947 bool has_peer_idx_invalid; 1948 bool is_decrypted; 1949 bool is_mgmt; 1950 u32 attention; 1951 bool frag_pn_check = true, multicast_check = true; 1952 1953 if (skb_queue_empty(amsdu)) 1954 return; 1955 1956 first = skb_peek(amsdu); 1957 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1958 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1959 1960 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1961 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1962 1963 is_mgmt = !!(rxd_attention->flags & 1964 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE)); 1965 1966 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1967 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 1968 1969 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11 1970 * decapped header. It'll be used for undecapping of each MSDU. 1971 */ 1972 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1973 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1974 1975 if (rx_hdr) 1976 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1977 1978 /* Each A-MSDU subframe will use the original header as the base and be 1979 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl. 1980 */ 1981 hdr = (void *)first_hdr; 1982 1983 if (ieee80211_is_data_qos(hdr->frame_control)) { 1984 qos = ieee80211_get_qos_ctl(hdr); 1985 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1986 } 1987 1988 /* Some attention flags are valid only in the last MSDU. */ 1989 last = skb_peek_tail(amsdu); 1990 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1991 (void *)last->data - hw->rx_desc_ops->rx_desc_size); 1992 1993 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1994 attention = __le32_to_cpu(rxd_attention->flags); 1995 1996 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR); 1997 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR); 1998 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR); 1999 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID); 2000 2001 /* Note: If hardware captures an encrypted frame that it can't decrypt, 2002 * e.g. due to fcs error, missing peer or invalid key data it will 2003 * report the frame as raw. 2004 */ 2005 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE && 2006 !has_fcs_err && 2007 !has_crypto_err && 2008 !has_peer_idx_invalid); 2009 2010 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */ 2011 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC | 2012 RX_FLAG_MMIC_ERROR | 2013 RX_FLAG_DECRYPTED | 2014 RX_FLAG_IV_STRIPPED | 2015 RX_FLAG_ONLY_MONITOR | 2016 RX_FLAG_MMIC_STRIPPED); 2017 2018 if (has_fcs_err) 2019 status->flag |= RX_FLAG_FAILED_FCS_CRC; 2020 2021 if (has_tkip_err) 2022 status->flag |= RX_FLAG_MMIC_ERROR; 2023 2024 if (err) { 2025 if (has_fcs_err) 2026 *err = ATH10K_PKT_RX_ERR_FCS; 2027 else if (has_tkip_err) 2028 *err = ATH10K_PKT_RX_ERR_TKIP; 2029 else if (has_crypto_err) 2030 *err = ATH10K_PKT_RX_ERR_CRYPT; 2031 else if (has_peer_idx_invalid) 2032 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL; 2033 } 2034 2035 /* Firmware reports all necessary management frames via WMI already. 2036 * They are not reported to monitor interfaces at all so pass the ones 2037 * coming via HTT to monitor interfaces instead. This simplifies 2038 * matters a lot. 2039 */ 2040 if (is_mgmt) 2041 status->flag |= RX_FLAG_ONLY_MONITOR; 2042 2043 if (is_decrypted) { 2044 status->flag |= RX_FLAG_DECRYPTED; 2045 2046 if (likely(!is_mgmt)) 2047 status->flag |= RX_FLAG_MMIC_STRIPPED; 2048 2049 if (fill_crypt_header) 2050 status->flag |= RX_FLAG_MIC_STRIPPED | 2051 RX_FLAG_ICV_STRIPPED; 2052 else 2053 status->flag |= RX_FLAG_IV_STRIPPED; 2054 } 2055 2056 skb_queue_walk(amsdu, msdu) { 2057 if (frag && !fill_crypt_header && is_decrypted && 2058 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) 2059 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar, 2060 msdu, 2061 peer_id, 2062 0, 2063 enctype); 2064 2065 if (frag) 2066 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, 2067 msdu, 2068 0); 2069 2070 if (!frag_pn_check || !multicast_check) { 2071 /* Discard the fragment with invalid PN or multicast DA 2072 */ 2073 temp = msdu->prev; 2074 __skb_unlink(msdu, amsdu); 2075 dev_kfree_skb_any(msdu); 2076 msdu = temp; 2077 frag_pn_check = true; 2078 multicast_check = true; 2079 continue; 2080 } 2081 2082 ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu); 2083 2084 if (frag && !fill_crypt_header && 2085 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2086 status->flag &= ~RX_FLAG_MMIC_STRIPPED; 2087 2088 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, 2089 is_decrypted); 2090 2091 /* Undecapping involves copying the original 802.11 header back 2092 * to sk_buff. If frame is protected and hardware has decrypted 2093 * it then remove the protected bit. 2094 */ 2095 if (!is_decrypted) 2096 continue; 2097 if (is_mgmt) 2098 continue; 2099 2100 if (fill_crypt_header) 2101 continue; 2102 2103 hdr = (void *)msdu->data; 2104 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2105 2106 if (frag && !fill_crypt_header && 2107 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2108 status->flag &= ~RX_FLAG_IV_STRIPPED & 2109 ~RX_FLAG_MMIC_STRIPPED; 2110 } 2111 } 2112 2113 static void ath10k_htt_rx_h_enqueue(struct ath10k *ar, 2114 struct sk_buff_head *amsdu, 2115 struct ieee80211_rx_status *status) 2116 { 2117 struct sk_buff *msdu; 2118 struct sk_buff *first_subframe; 2119 2120 first_subframe = skb_peek(amsdu); 2121 2122 while ((msdu = __skb_dequeue(amsdu))) { 2123 /* Setup per-MSDU flags */ 2124 if (skb_queue_empty(amsdu)) 2125 status->flag &= ~RX_FLAG_AMSDU_MORE; 2126 else 2127 status->flag |= RX_FLAG_AMSDU_MORE; 2128 2129 if (msdu == first_subframe) { 2130 first_subframe = NULL; 2131 status->flag &= ~RX_FLAG_ALLOW_SAME_PN; 2132 } else { 2133 status->flag |= RX_FLAG_ALLOW_SAME_PN; 2134 } 2135 2136 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 2137 } 2138 } 2139 2140 static int ath10k_unchain_msdu(struct sk_buff_head *amsdu, 2141 unsigned long *unchain_cnt) 2142 { 2143 struct sk_buff *skb, *first; 2144 int space; 2145 int total_len = 0; 2146 int amsdu_len = skb_queue_len(amsdu); 2147 2148 /* TODO: Might could optimize this by using 2149 * skb_try_coalesce or similar method to 2150 * decrease copying, or maybe get mac80211 to 2151 * provide a way to just receive a list of 2152 * skb? 2153 */ 2154 2155 first = __skb_dequeue(amsdu); 2156 2157 /* Allocate total length all at once. */ 2158 skb_queue_walk(amsdu, skb) 2159 total_len += skb->len; 2160 2161 space = total_len - skb_tailroom(first); 2162 if ((space > 0) && 2163 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) { 2164 /* TODO: bump some rx-oom error stat */ 2165 /* put it back together so we can free the 2166 * whole list at once. 2167 */ 2168 __skb_queue_head(amsdu, first); 2169 return -1; 2170 } 2171 2172 /* Walk list again, copying contents into 2173 * msdu_head 2174 */ 2175 while ((skb = __skb_dequeue(amsdu))) { 2176 skb_copy_from_linear_data(skb, skb_put(first, skb->len), 2177 skb->len); 2178 dev_kfree_skb_any(skb); 2179 } 2180 2181 __skb_queue_head(amsdu, first); 2182 2183 *unchain_cnt += amsdu_len - 1; 2184 2185 return 0; 2186 } 2187 2188 static void ath10k_htt_rx_h_unchain(struct ath10k *ar, 2189 struct sk_buff_head *amsdu, 2190 unsigned long *drop_cnt, 2191 unsigned long *unchain_cnt) 2192 { 2193 struct sk_buff *first; 2194 struct ath10k_hw_params *hw = &ar->hw_params; 2195 struct htt_rx_desc *rxd; 2196 struct rx_msdu_start_common *rxd_msdu_start_common; 2197 struct rx_frag_info_common *rxd_frag_info; 2198 enum rx_msdu_decap_format decap; 2199 2200 first = skb_peek(amsdu); 2201 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2202 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2203 2204 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 2205 rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd); 2206 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 2207 RX_MSDU_START_INFO1_DECAP_FORMAT); 2208 2209 /* FIXME: Current unchaining logic can only handle simple case of raw 2210 * msdu chaining. If decapping is other than raw the chaining may be 2211 * more complex and this isn't handled by the current code. Don't even 2212 * try re-constructing such frames - it'll be pretty much garbage. 2213 */ 2214 if (decap != RX_MSDU_DECAP_RAW || 2215 skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) { 2216 *drop_cnt += skb_queue_len(amsdu); 2217 __skb_queue_purge(amsdu); 2218 return; 2219 } 2220 2221 ath10k_unchain_msdu(amsdu, unchain_cnt); 2222 } 2223 2224 static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar, 2225 struct sk_buff_head *amsdu) 2226 { 2227 u8 *subframe_hdr; 2228 struct sk_buff *first; 2229 bool is_first, is_last; 2230 struct ath10k_hw_params *hw = &ar->hw_params; 2231 struct htt_rx_desc *rxd; 2232 struct rx_msdu_end_common *rxd_msdu_end_common; 2233 struct rx_mpdu_start *rxd_mpdu_start; 2234 struct ieee80211_hdr *hdr; 2235 size_t hdr_len, crypto_len; 2236 enum htt_rx_mpdu_encrypt_type enctype; 2237 int bytes_aligned = ar->hw_params.decap_align_bytes; 2238 2239 first = skb_peek(amsdu); 2240 2241 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2242 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2243 2244 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 2245 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 2246 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 2247 2248 is_first = !!(rxd_msdu_end_common->info0 & 2249 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 2250 is_last = !!(rxd_msdu_end_common->info0 & 2251 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 2252 2253 /* Return in case of non-aggregated msdu */ 2254 if (is_first && is_last) 2255 return true; 2256 2257 /* First msdu flag is not set for the first msdu of the list */ 2258 if (!is_first) 2259 return false; 2260 2261 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 2262 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 2263 2264 hdr_len = ieee80211_hdrlen(hdr->frame_control); 2265 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 2266 2267 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) + 2268 crypto_len; 2269 2270 /* Validate if the amsdu has a proper first subframe. 2271 * There are chances a single msdu can be received as amsdu when 2272 * the unauthenticated amsdu flag of a QoS header 2273 * gets flipped in non-SPP AMSDU's, in such cases the first 2274 * subframe has llc/snap header in place of a valid da. 2275 * return false if the da matches rfc1042 pattern 2276 */ 2277 if (ether_addr_equal(subframe_hdr, rfc1042_header)) 2278 return false; 2279 2280 return true; 2281 } 2282 2283 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar, 2284 struct sk_buff_head *amsdu, 2285 struct ieee80211_rx_status *rx_status) 2286 { 2287 if (!rx_status->freq) { 2288 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n"); 2289 return false; 2290 } 2291 2292 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) { 2293 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n"); 2294 return false; 2295 } 2296 2297 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) { 2298 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n"); 2299 return false; 2300 } 2301 2302 return true; 2303 } 2304 2305 static void ath10k_htt_rx_h_filter(struct ath10k *ar, 2306 struct sk_buff_head *amsdu, 2307 struct ieee80211_rx_status *rx_status, 2308 unsigned long *drop_cnt) 2309 { 2310 if (skb_queue_empty(amsdu)) 2311 return; 2312 2313 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status)) 2314 return; 2315 2316 if (drop_cnt) 2317 *drop_cnt += skb_queue_len(amsdu); 2318 2319 __skb_queue_purge(amsdu); 2320 } 2321 2322 static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) 2323 { 2324 struct ath10k *ar = htt->ar; 2325 struct ieee80211_rx_status *rx_status = &htt->rx_status; 2326 struct sk_buff_head amsdu; 2327 int ret; 2328 unsigned long drop_cnt = 0; 2329 unsigned long unchain_cnt = 0; 2330 unsigned long drop_cnt_filter = 0; 2331 unsigned long msdus_to_queue, num_msdus; 2332 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX; 2333 u8 first_hdr[RX_HTT_HDR_STATUS_LEN]; 2334 2335 __skb_queue_head_init(&amsdu); 2336 2337 spin_lock_bh(&htt->rx_ring.lock); 2338 if (htt->rx_confused) { 2339 spin_unlock_bh(&htt->rx_ring.lock); 2340 return -EIO; 2341 } 2342 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu); 2343 spin_unlock_bh(&htt->rx_ring.lock); 2344 2345 if (ret < 0) { 2346 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret); 2347 __skb_queue_purge(&amsdu); 2348 /* FIXME: It's probably a good idea to reboot the 2349 * device instead of leaving it inoperable. 2350 */ 2351 htt->rx_confused = true; 2352 return ret; 2353 } 2354 2355 num_msdus = skb_queue_len(&amsdu); 2356 2357 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); 2358 2359 /* only for ret = 1 indicates chained msdus */ 2360 if (ret > 0) 2361 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt); 2362 2363 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter); 2364 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0, 2365 false); 2366 msdus_to_queue = skb_queue_len(&amsdu); 2367 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); 2368 2369 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err, 2370 unchain_cnt, drop_cnt, drop_cnt_filter, 2371 msdus_to_queue); 2372 2373 return 0; 2374 } 2375 2376 static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc, 2377 union htt_rx_pn_t *pn, 2378 int pn_len_bits) 2379 { 2380 switch (pn_len_bits) { 2381 case 48: 2382 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) + 2383 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32); 2384 break; 2385 case 24: 2386 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0); 2387 break; 2388 } 2389 } 2390 2391 static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn, 2392 union htt_rx_pn_t *old_pn) 2393 { 2394 return ((new_pn->pn48 & 0xffffffffffffULL) <= 2395 (old_pn->pn48 & 0xffffffffffffULL)); 2396 } 2397 2398 static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar, 2399 struct ath10k_peer *peer, 2400 struct htt_rx_indication_hl *rx) 2401 { 2402 bool last_pn_valid, pn_invalid = false; 2403 enum htt_txrx_sec_cast_type sec_index; 2404 enum htt_security_types sec_type; 2405 union htt_rx_pn_t new_pn = {0}; 2406 struct htt_hl_rx_desc *rx_desc; 2407 union htt_rx_pn_t *last_pn; 2408 u32 rx_desc_info, tid; 2409 int num_mpdu_ranges; 2410 2411 lockdep_assert_held(&ar->data_lock); 2412 2413 if (!peer) 2414 return false; 2415 2416 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU)) 2417 return false; 2418 2419 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2420 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2421 2422 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2423 rx_desc_info = __le32_to_cpu(rx_desc->info); 2424 2425 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) 2426 return false; 2427 2428 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2429 last_pn_valid = peer->tids_last_pn_valid[tid]; 2430 last_pn = &peer->tids_last_pn[tid]; 2431 2432 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2433 sec_index = HTT_TXRX_SEC_MCAST; 2434 else 2435 sec_index = HTT_TXRX_SEC_UCAST; 2436 2437 sec_type = peer->rx_pn[sec_index].sec_type; 2438 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2439 2440 if (sec_type != HTT_SECURITY_AES_CCMP && 2441 sec_type != HTT_SECURITY_TKIP && 2442 sec_type != HTT_SECURITY_TKIP_NOMIC) 2443 return false; 2444 2445 if (last_pn_valid) 2446 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn); 2447 else 2448 peer->tids_last_pn_valid[tid] = true; 2449 2450 if (!pn_invalid) 2451 last_pn->pn48 = new_pn.pn48; 2452 2453 return pn_invalid; 2454 } 2455 2456 static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt, 2457 struct htt_rx_indication_hl *rx, 2458 struct sk_buff *skb, 2459 enum htt_rx_pn_check_type check_pn_type, 2460 enum htt_rx_tkip_demic_type tkip_mic_type) 2461 { 2462 struct ath10k *ar = htt->ar; 2463 struct ath10k_peer *peer; 2464 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2465 struct fw_rx_desc_hl *fw_desc; 2466 enum htt_txrx_sec_cast_type sec_index; 2467 enum htt_security_types sec_type; 2468 union htt_rx_pn_t new_pn = {0}; 2469 struct htt_hl_rx_desc *rx_desc; 2470 struct ieee80211_hdr *hdr; 2471 struct ieee80211_rx_status *rx_status; 2472 u16 peer_id; 2473 u8 rx_desc_len; 2474 int num_mpdu_ranges; 2475 size_t tot_hdr_len; 2476 struct ieee80211_channel *ch; 2477 bool pn_invalid, qos, first_msdu; 2478 u32 tid, rx_desc_info; 2479 2480 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2481 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2482 2483 spin_lock_bh(&ar->data_lock); 2484 peer = ath10k_peer_find_by_id(ar, peer_id); 2485 spin_unlock_bh(&ar->data_lock); 2486 if (!peer && peer_id != HTT_INVALID_PEERID) 2487 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id); 2488 2489 if (!peer) 2490 return true; 2491 2492 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2493 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2494 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx); 2495 fw_desc = &rx->fw_desc; 2496 rx_desc_len = fw_desc->len; 2497 2498 if (fw_desc->u.bits.discard) { 2499 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); 2500 goto err; 2501 } 2502 2503 /* I have not yet seen any case where num_mpdu_ranges > 1. 2504 * qcacld does not seem handle that case either, so we introduce the 2505 * same limitation here as well. 2506 */ 2507 if (num_mpdu_ranges > 1) 2508 ath10k_warn(ar, 2509 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n", 2510 num_mpdu_ranges); 2511 2512 if (mpdu_ranges->mpdu_range_status != 2513 HTT_RX_IND_MPDU_STATUS_OK && 2514 mpdu_ranges->mpdu_range_status != 2515 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) { 2516 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n", 2517 mpdu_ranges->mpdu_range_status); 2518 goto err; 2519 } 2520 2521 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2522 rx_desc_info = __le32_to_cpu(rx_desc->info); 2523 2524 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2525 sec_index = HTT_TXRX_SEC_MCAST; 2526 else 2527 sec_index = HTT_TXRX_SEC_UCAST; 2528 2529 sec_type = peer->rx_pn[sec_index].sec_type; 2530 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU; 2531 2532 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2533 2534 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) { 2535 spin_lock_bh(&ar->data_lock); 2536 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx); 2537 spin_unlock_bh(&ar->data_lock); 2538 2539 if (pn_invalid) 2540 goto err; 2541 } 2542 2543 /* Strip off all headers before the MAC header before delivery to 2544 * mac80211 2545 */ 2546 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) + 2547 sizeof(rx->ppdu) + sizeof(rx->prefix) + 2548 sizeof(rx->fw_desc) + 2549 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len; 2550 2551 skb_pull(skb, tot_hdr_len); 2552 2553 hdr = (struct ieee80211_hdr *)skb->data; 2554 qos = ieee80211_is_data_qos(hdr->frame_control); 2555 2556 rx_status = IEEE80211_SKB_RXCB(skb); 2557 memset(rx_status, 0, sizeof(*rx_status)); 2558 2559 if (rx->ppdu.combined_rssi == 0) { 2560 /* SDIO firmware does not provide signal */ 2561 rx_status->signal = 0; 2562 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; 2563 } else { 2564 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 2565 rx->ppdu.combined_rssi; 2566 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 2567 } 2568 2569 spin_lock_bh(&ar->data_lock); 2570 ch = ar->scan_channel; 2571 if (!ch) 2572 ch = ar->rx_channel; 2573 if (!ch) 2574 ch = ath10k_htt_rx_h_any_channel(ar); 2575 if (!ch) 2576 ch = ar->tgt_oper_chan; 2577 spin_unlock_bh(&ar->data_lock); 2578 2579 if (ch) { 2580 rx_status->band = ch->band; 2581 rx_status->freq = ch->center_freq; 2582 } 2583 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU) 2584 rx_status->flag &= ~RX_FLAG_AMSDU_MORE; 2585 else 2586 rx_status->flag |= RX_FLAG_AMSDU_MORE; 2587 2588 /* Not entirely sure about this, but all frames from the chipset has 2589 * the protected flag set even though they have already been decrypted. 2590 * Unmasking this flag is necessary in order for mac80211 not to drop 2591 * the frame. 2592 * TODO: Verify this is always the case or find out a way to check 2593 * if there has been hw decryption. 2594 */ 2595 if (ieee80211_has_protected(hdr->frame_control)) { 2596 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2597 rx_status->flag |= RX_FLAG_DECRYPTED | 2598 RX_FLAG_IV_STRIPPED | 2599 RX_FLAG_MMIC_STRIPPED; 2600 2601 if (tid < IEEE80211_NUM_TIDS && 2602 first_msdu && 2603 check_pn_type == HTT_RX_PN_CHECK && 2604 (sec_type == HTT_SECURITY_AES_CCMP || 2605 sec_type == HTT_SECURITY_TKIP || 2606 sec_type == HTT_SECURITY_TKIP_NOMIC)) { 2607 u8 offset, *ivp, i; 2608 s8 keyidx = 0; 2609 __le64 pn48 = cpu_to_le64(new_pn.pn48); 2610 2611 hdr = (struct ieee80211_hdr *)skb->data; 2612 offset = ieee80211_hdrlen(hdr->frame_control); 2613 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2614 rx_status->flag &= ~RX_FLAG_IV_STRIPPED; 2615 2616 memmove(skb->data - IEEE80211_CCMP_HDR_LEN, 2617 skb->data, offset); 2618 skb_push(skb, IEEE80211_CCMP_HDR_LEN); 2619 ivp = skb->data + offset; 2620 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN); 2621 /* Ext IV */ 2622 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV; 2623 2624 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { 2625 if (peer->keys[i] && 2626 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE) 2627 keyidx = peer->keys[i]->keyidx; 2628 } 2629 2630 /* Key ID */ 2631 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6; 2632 2633 if (sec_type == HTT_SECURITY_AES_CCMP) { 2634 rx_status->flag |= RX_FLAG_MIC_STRIPPED; 2635 /* pn 0, pn 1 */ 2636 memcpy(skb->data + offset, &pn48, 2); 2637 /* pn 1, pn 3 , pn 34 , pn 5 */ 2638 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2639 } else { 2640 rx_status->flag |= RX_FLAG_ICV_STRIPPED; 2641 /* TSC 0 */ 2642 memcpy(skb->data + offset + 2, &pn48, 1); 2643 /* TSC 1 */ 2644 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1); 2645 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/ 2646 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2647 } 2648 } 2649 } 2650 2651 if (tkip_mic_type == HTT_RX_TKIP_MIC) 2652 rx_status->flag &= ~RX_FLAG_IV_STRIPPED & 2653 ~RX_FLAG_MMIC_STRIPPED; 2654 2655 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) 2656 rx_status->flag |= RX_FLAG_MMIC_ERROR; 2657 2658 if (!qos && tid < IEEE80211_NUM_TIDS) { 2659 u8 offset; 2660 __le16 qos_ctrl = 0; 2661 2662 hdr = (struct ieee80211_hdr *)skb->data; 2663 offset = ieee80211_hdrlen(hdr->frame_control); 2664 2665 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA); 2666 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset); 2667 skb_push(skb, IEEE80211_QOS_CTL_LEN); 2668 qos_ctrl = cpu_to_le16(tid); 2669 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN); 2670 } 2671 2672 if (ar->napi.dev) 2673 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 2674 else 2675 ieee80211_rx_ni(ar->hw, skb); 2676 2677 /* We have delivered the skb to the upper layers (mac80211) so we 2678 * must not free it. 2679 */ 2680 return false; 2681 err: 2682 /* Tell the caller that it must free the skb since we have not 2683 * consumed it 2684 */ 2685 return true; 2686 } 2687 2688 static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb, 2689 u16 head_len, 2690 u16 hdr_len) 2691 { 2692 u8 *ivp, *orig_hdr; 2693 2694 orig_hdr = skb->data; 2695 ivp = orig_hdr + hdr_len + head_len; 2696 2697 /* the ExtIV bit is always set to 1 for TKIP */ 2698 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2699 return -EINVAL; 2700 2701 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2702 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2703 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN); 2704 return 0; 2705 } 2706 2707 static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb, 2708 u16 head_len, 2709 u16 hdr_len) 2710 { 2711 u8 *ivp, *orig_hdr; 2712 2713 orig_hdr = skb->data; 2714 ivp = orig_hdr + hdr_len + head_len; 2715 2716 /* the ExtIV bit is always set to 1 for TKIP */ 2717 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2718 return -EINVAL; 2719 2720 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2721 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2722 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN); 2723 return 0; 2724 } 2725 2726 static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb, 2727 u16 head_len, 2728 u16 hdr_len) 2729 { 2730 u8 *ivp, *orig_hdr; 2731 2732 orig_hdr = skb->data; 2733 ivp = orig_hdr + hdr_len + head_len; 2734 2735 /* the ExtIV bit is always set to 1 for CCMP */ 2736 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2737 return -EINVAL; 2738 2739 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN); 2740 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len); 2741 skb_pull(skb, IEEE80211_CCMP_HDR_LEN); 2742 return 0; 2743 } 2744 2745 static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb, 2746 u16 head_len, 2747 u16 hdr_len) 2748 { 2749 u8 *orig_hdr; 2750 2751 orig_hdr = skb->data; 2752 2753 memmove(orig_hdr + IEEE80211_WEP_IV_LEN, 2754 orig_hdr, head_len + hdr_len); 2755 skb_pull(skb, IEEE80211_WEP_IV_LEN); 2756 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN); 2757 return 0; 2758 } 2759 2760 static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt, 2761 struct htt_rx_fragment_indication *rx, 2762 struct sk_buff *skb) 2763 { 2764 struct ath10k *ar = htt->ar; 2765 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC; 2766 enum htt_txrx_sec_cast_type sec_index; 2767 struct htt_rx_indication_hl *rx_hl; 2768 enum htt_security_types sec_type; 2769 u32 tid, frag, seq, rx_desc_info; 2770 union htt_rx_pn_t new_pn = {0}; 2771 struct htt_hl_rx_desc *rx_desc; 2772 u16 peer_id, sc, hdr_space; 2773 union htt_rx_pn_t *last_pn; 2774 struct ieee80211_hdr *hdr; 2775 int ret, num_mpdu_ranges; 2776 struct ath10k_peer *peer; 2777 struct htt_resp *resp; 2778 size_t tot_hdr_len; 2779 2780 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2781 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2782 skb_trim(skb, skb->len - FCS_LEN); 2783 2784 peer_id = __le16_to_cpu(rx->peer_id); 2785 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl); 2786 2787 spin_lock_bh(&ar->data_lock); 2788 peer = ath10k_peer_find_by_id(ar, peer_id); 2789 if (!peer) { 2790 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id); 2791 goto err; 2792 } 2793 2794 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1), 2795 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2796 2797 tot_hdr_len = sizeof(struct htt_resp_hdr) + 2798 sizeof(rx_hl->hdr) + 2799 sizeof(rx_hl->ppdu) + 2800 sizeof(rx_hl->prefix) + 2801 sizeof(rx_hl->fw_desc) + 2802 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges; 2803 2804 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2805 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len); 2806 rx_desc_info = __le32_to_cpu(rx_desc->info); 2807 2808 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); 2809 2810 if (is_multicast_ether_addr(hdr->addr1)) { 2811 /* Discard the fragment with multicast DA */ 2812 goto err; 2813 } 2814 2815 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) { 2816 spin_unlock_bh(&ar->data_lock); 2817 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2818 HTT_RX_NON_PN_CHECK, 2819 HTT_RX_NON_TKIP_MIC); 2820 } 2821 2822 if (ieee80211_has_retry(hdr->frame_control)) 2823 goto err; 2824 2825 hdr_space = ieee80211_hdrlen(hdr->frame_control); 2826 sc = __le16_to_cpu(hdr->seq_ctrl); 2827 seq = (sc & IEEE80211_SCTL_SEQ) >> 4; 2828 frag = sc & IEEE80211_SCTL_FRAG; 2829 2830 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ? 2831 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST; 2832 sec_type = peer->rx_pn[sec_index].sec_type; 2833 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2834 2835 switch (sec_type) { 2836 case HTT_SECURITY_TKIP: 2837 tkip_mic = HTT_RX_TKIP_MIC; 2838 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb, 2839 tot_hdr_len + 2840 rx_hl->fw_desc.len, 2841 hdr_space); 2842 if (ret) 2843 goto err; 2844 break; 2845 case HTT_SECURITY_TKIP_NOMIC: 2846 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb, 2847 tot_hdr_len + 2848 rx_hl->fw_desc.len, 2849 hdr_space); 2850 if (ret) 2851 goto err; 2852 break; 2853 case HTT_SECURITY_AES_CCMP: 2854 ret = ath10k_htt_rx_frag_ccmp_decap(skb, 2855 tot_hdr_len + rx_hl->fw_desc.len, 2856 hdr_space); 2857 if (ret) 2858 goto err; 2859 break; 2860 case HTT_SECURITY_WEP128: 2861 case HTT_SECURITY_WEP104: 2862 case HTT_SECURITY_WEP40: 2863 ret = ath10k_htt_rx_frag_wep_decap(skb, 2864 tot_hdr_len + rx_hl->fw_desc.len, 2865 hdr_space); 2866 if (ret) 2867 goto err; 2868 break; 2869 default: 2870 break; 2871 } 2872 2873 resp = (struct htt_resp *)(skb->data); 2874 2875 if (sec_type != HTT_SECURITY_AES_CCMP && 2876 sec_type != HTT_SECURITY_TKIP && 2877 sec_type != HTT_SECURITY_TKIP_NOMIC) { 2878 spin_unlock_bh(&ar->data_lock); 2879 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2880 HTT_RX_NON_PN_CHECK, 2881 HTT_RX_NON_TKIP_MIC); 2882 } 2883 2884 last_pn = &peer->frag_tids_last_pn[tid]; 2885 2886 if (frag == 0) { 2887 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl)) 2888 goto err; 2889 2890 last_pn->pn48 = new_pn.pn48; 2891 peer->frag_tids_seq[tid] = seq; 2892 } else if (sec_type == HTT_SECURITY_AES_CCMP) { 2893 if (seq != peer->frag_tids_seq[tid]) 2894 goto err; 2895 2896 if (new_pn.pn48 != last_pn->pn48 + 1) 2897 goto err; 2898 2899 last_pn->pn48 = new_pn.pn48; 2900 last_pn = &peer->tids_last_pn[tid]; 2901 last_pn->pn48 = new_pn.pn48; 2902 } 2903 2904 spin_unlock_bh(&ar->data_lock); 2905 2906 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2907 HTT_RX_NON_PN_CHECK, tkip_mic); 2908 2909 err: 2910 spin_unlock_bh(&ar->data_lock); 2911 2912 /* Tell the caller that it must free the skb since we have not 2913 * consumed it 2914 */ 2915 return true; 2916 } 2917 2918 static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt, 2919 struct htt_rx_indication *rx) 2920 { 2921 struct ath10k *ar = htt->ar; 2922 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2923 int num_mpdu_ranges; 2924 int i, mpdu_count = 0; 2925 u16 peer_id; 2926 u8 tid; 2927 2928 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2929 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2930 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2931 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2932 2933 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx); 2934 2935 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ", 2936 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges)); 2937 2938 for (i = 0; i < num_mpdu_ranges; i++) 2939 mpdu_count += mpdu_ranges[i].mpdu_count; 2940 2941 atomic_add(mpdu_count, &htt->num_mpdus_ready); 2942 2943 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges, 2944 num_mpdu_ranges); 2945 } 2946 2947 static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, 2948 struct sk_buff *skb) 2949 { 2950 struct ath10k_htt *htt = &ar->htt; 2951 struct htt_resp *resp = (struct htt_resp *)skb->data; 2952 struct htt_tx_done tx_done = {}; 2953 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS); 2954 __le16 msdu_id, *msdus; 2955 bool rssi_enabled = false; 2956 u8 msdu_count = 0, num_airtime_records, tid; 2957 int i, htt_pad = 0; 2958 struct htt_data_tx_compl_ppdu_dur *ppdu_info; 2959 struct ath10k_peer *peer; 2960 u16 ppdu_info_offset = 0, peer_id; 2961 u32 tx_duration; 2962 2963 switch (status) { 2964 case HTT_DATA_TX_STATUS_NO_ACK: 2965 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 2966 break; 2967 case HTT_DATA_TX_STATUS_OK: 2968 tx_done.status = HTT_TX_COMPL_STATE_ACK; 2969 break; 2970 case HTT_DATA_TX_STATUS_DISCARD: 2971 case HTT_DATA_TX_STATUS_POSTPONE: 2972 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL: 2973 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2974 break; 2975 default: 2976 ath10k_warn(ar, "unhandled tx completion status %d\n", status); 2977 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2978 break; 2979 } 2980 2981 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n", 2982 resp->data_tx_completion.num_msdus); 2983 2984 msdu_count = resp->data_tx_completion.num_msdus; 2985 msdus = resp->data_tx_completion.msdus; 2986 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp); 2987 2988 if (rssi_enabled) 2989 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params, 2990 resp); 2991 2992 for (i = 0; i < msdu_count; i++) { 2993 msdu_id = msdus[i]; 2994 tx_done.msdu_id = __le16_to_cpu(msdu_id); 2995 2996 if (rssi_enabled) { 2997 /* Total no of MSDUs should be even, 2998 * if odd MSDUs are sent firmware fills 2999 * last msdu id with 0xffff 3000 */ 3001 if (msdu_count & 0x01) { 3002 msdu_id = msdus[msdu_count + i + 1 + htt_pad]; 3003 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 3004 } else { 3005 msdu_id = msdus[msdu_count + i + htt_pad]; 3006 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 3007 } 3008 } 3009 3010 /* kfifo_put: In practice firmware shouldn't fire off per-CE 3011 * interrupt and main interrupt (MSI/-X range case) for the same 3012 * HTC service so it should be safe to use kfifo_put w/o lock. 3013 * 3014 * From kfifo_put() documentation: 3015 * Note that with only one concurrent reader and one concurrent 3016 * writer, you don't need extra locking to use these macro. 3017 */ 3018 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) { 3019 ath10k_txrx_tx_unref(htt, &tx_done); 3020 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) { 3021 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n", 3022 tx_done.msdu_id, tx_done.status); 3023 ath10k_txrx_tx_unref(htt, &tx_done); 3024 } 3025 } 3026 3027 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT)) 3028 return; 3029 3030 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count; 3031 3032 if (rssi_enabled) 3033 ppdu_info_offset += ppdu_info_offset; 3034 3035 if (resp->data_tx_completion.flags2 & 3036 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT)) 3037 ppdu_info_offset += 2; 3038 3039 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset]; 3040 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK, 3041 __le32_to_cpu(ppdu_info->info0)); 3042 3043 for (i = 0; i < num_airtime_records; i++) { 3044 struct htt_data_tx_ppdu_dur *ppdu_dur; 3045 u32 info0; 3046 3047 ppdu_dur = &ppdu_info->ppdu_dur[i]; 3048 info0 = __le32_to_cpu(ppdu_dur->info0); 3049 3050 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK, 3051 info0); 3052 rcu_read_lock(); 3053 spin_lock_bh(&ar->data_lock); 3054 3055 peer = ath10k_peer_find_by_id(ar, peer_id); 3056 if (!peer || !peer->sta) { 3057 spin_unlock_bh(&ar->data_lock); 3058 rcu_read_unlock(); 3059 continue; 3060 } 3061 3062 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) & 3063 IEEE80211_QOS_CTL_TID_MASK; 3064 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration); 3065 3066 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0); 3067 3068 spin_unlock_bh(&ar->data_lock); 3069 rcu_read_unlock(); 3070 } 3071 } 3072 3073 static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp) 3074 { 3075 struct htt_rx_addba *ev = &resp->rx_addba; 3076 struct ath10k_peer *peer; 3077 struct ath10k_vif *arvif; 3078 u16 info0, tid, peer_id; 3079 3080 info0 = __le16_to_cpu(ev->info0); 3081 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3082 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3083 3084 ath10k_dbg(ar, ATH10K_DBG_HTT, 3085 "htt rx addba tid %u peer_id %u size %u\n", 3086 tid, peer_id, ev->window_size); 3087 3088 spin_lock_bh(&ar->data_lock); 3089 peer = ath10k_peer_find_by_id(ar, peer_id); 3090 if (!peer) { 3091 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3092 peer_id); 3093 spin_unlock_bh(&ar->data_lock); 3094 return; 3095 } 3096 3097 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3098 if (!arvif) { 3099 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3100 peer->vdev_id); 3101 spin_unlock_bh(&ar->data_lock); 3102 return; 3103 } 3104 3105 ath10k_dbg(ar, ATH10K_DBG_HTT, 3106 "htt rx start rx ba session sta %pM tid %u size %u\n", 3107 peer->addr, tid, ev->window_size); 3108 3109 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3110 spin_unlock_bh(&ar->data_lock); 3111 } 3112 3113 static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp) 3114 { 3115 struct htt_rx_delba *ev = &resp->rx_delba; 3116 struct ath10k_peer *peer; 3117 struct ath10k_vif *arvif; 3118 u16 info0, tid, peer_id; 3119 3120 info0 = __le16_to_cpu(ev->info0); 3121 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3122 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3123 3124 ath10k_dbg(ar, ATH10K_DBG_HTT, 3125 "htt rx delba tid %u peer_id %u\n", 3126 tid, peer_id); 3127 3128 spin_lock_bh(&ar->data_lock); 3129 peer = ath10k_peer_find_by_id(ar, peer_id); 3130 if (!peer) { 3131 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3132 peer_id); 3133 spin_unlock_bh(&ar->data_lock); 3134 return; 3135 } 3136 3137 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3138 if (!arvif) { 3139 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3140 peer->vdev_id); 3141 spin_unlock_bh(&ar->data_lock); 3142 return; 3143 } 3144 3145 ath10k_dbg(ar, ATH10K_DBG_HTT, 3146 "htt rx stop rx ba session sta %pM tid %u\n", 3147 peer->addr, tid); 3148 3149 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3150 spin_unlock_bh(&ar->data_lock); 3151 } 3152 3153 static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw, 3154 struct sk_buff_head *list, 3155 struct sk_buff_head *amsdu) 3156 { 3157 struct sk_buff *msdu; 3158 struct htt_rx_desc *rxd; 3159 struct rx_msdu_end_common *rxd_msdu_end_common; 3160 3161 if (skb_queue_empty(list)) 3162 return -ENOBUFS; 3163 3164 if (WARN_ON(!skb_queue_empty(amsdu))) 3165 return -EINVAL; 3166 3167 while ((msdu = __skb_dequeue(list))) { 3168 __skb_queue_tail(amsdu, msdu); 3169 3170 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3171 (void *)msdu->data - 3172 hw->rx_desc_ops->rx_desc_size); 3173 3174 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3175 if (rxd_msdu_end_common->info0 & 3176 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)) 3177 break; 3178 } 3179 3180 msdu = skb_peek_tail(amsdu); 3181 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3182 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 3183 3184 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3185 if (!(rxd_msdu_end_common->info0 & 3186 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) { 3187 skb_queue_splice_init(amsdu, list); 3188 return -EAGAIN; 3189 } 3190 3191 return 0; 3192 } 3193 3194 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, 3195 struct sk_buff *skb) 3196 { 3197 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3198 3199 if (!ieee80211_has_protected(hdr->frame_control)) 3200 return; 3201 3202 /* Offloaded frames are already decrypted but firmware insists they are 3203 * protected in the 802.11 header. Strip the flag. Otherwise mac80211 3204 * will drop the frame. 3205 */ 3206 3207 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 3208 status->flag |= RX_FLAG_DECRYPTED | 3209 RX_FLAG_IV_STRIPPED | 3210 RX_FLAG_MMIC_STRIPPED; 3211 } 3212 3213 static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar, 3214 struct sk_buff_head *list) 3215 { 3216 struct ath10k_htt *htt = &ar->htt; 3217 struct ieee80211_rx_status *status = &htt->rx_status; 3218 struct htt_rx_offload_msdu *rx; 3219 struct sk_buff *msdu; 3220 size_t offset; 3221 3222 while ((msdu = __skb_dequeue(list))) { 3223 /* Offloaded frames don't have Rx descriptor. Instead they have 3224 * a short meta information header. 3225 */ 3226 3227 rx = (void *)msdu->data; 3228 3229 skb_put(msdu, sizeof(*rx)); 3230 skb_pull(msdu, sizeof(*rx)); 3231 3232 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) { 3233 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n"); 3234 dev_kfree_skb_any(msdu); 3235 continue; 3236 } 3237 3238 skb_put(msdu, __le16_to_cpu(rx->msdu_len)); 3239 3240 /* Offloaded rx header length isn't multiple of 2 nor 4 so the 3241 * actual payload is unaligned. Align the frame. Otherwise 3242 * mac80211 complains. This shouldn't reduce performance much 3243 * because these offloaded frames are rare. 3244 */ 3245 offset = 4 - ((unsigned long)msdu->data & 3); 3246 skb_put(msdu, offset); 3247 memmove(msdu->data + offset, msdu->data, msdu->len); 3248 skb_pull(msdu, offset); 3249 3250 /* FIXME: The frame is NWifi. Re-construct QoS Control 3251 * if possible later. 3252 */ 3253 3254 memset(status, 0, sizeof(*status)); 3255 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 3256 3257 ath10k_htt_rx_h_rx_offload_prot(status, msdu); 3258 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); 3259 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 3260 } 3261 } 3262 3263 static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) 3264 { 3265 struct ath10k_htt *htt = &ar->htt; 3266 struct htt_resp *resp = (void *)skb->data; 3267 struct ieee80211_rx_status *status = &htt->rx_status; 3268 struct sk_buff_head list; 3269 struct sk_buff_head amsdu; 3270 u16 peer_id; 3271 u16 msdu_count; 3272 u8 vdev_id; 3273 u8 tid; 3274 bool offload; 3275 bool frag; 3276 int ret; 3277 3278 lockdep_assert_held(&htt->rx_ring.lock); 3279 3280 if (htt->rx_confused) 3281 return -EIO; 3282 3283 skb_pull(skb, sizeof(resp->hdr)); 3284 skb_pull(skb, sizeof(resp->rx_in_ord_ind)); 3285 3286 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id); 3287 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count); 3288 vdev_id = resp->rx_in_ord_ind.vdev_id; 3289 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID); 3290 offload = !!(resp->rx_in_ord_ind.info & 3291 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 3292 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK); 3293 3294 ath10k_dbg(ar, ATH10K_DBG_HTT, 3295 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n", 3296 vdev_id, peer_id, tid, offload, frag, msdu_count); 3297 3298 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) { 3299 ath10k_warn(ar, "dropping invalid in order rx indication\n"); 3300 return -EINVAL; 3301 } 3302 3303 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later 3304 * extracted and processed. 3305 */ 3306 __skb_queue_head_init(&list); 3307 if (ar->hw_params.target_64bit) 3308 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind, 3309 &list); 3310 else 3311 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind, 3312 &list); 3313 3314 if (ret < 0) { 3315 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret); 3316 htt->rx_confused = true; 3317 return -EIO; 3318 } 3319 3320 /* Offloaded frames are very different and need to be handled 3321 * separately. 3322 */ 3323 if (offload) 3324 ath10k_htt_rx_h_rx_offload(ar, &list); 3325 3326 while (!skb_queue_empty(&list)) { 3327 __skb_queue_head_init(&amsdu); 3328 ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu); 3329 switch (ret) { 3330 case 0: 3331 /* Note: The in-order indication may report interleaved 3332 * frames from different PPDUs meaning reported rx rate 3333 * to mac80211 isn't accurate/reliable. It's still 3334 * better to report something than nothing though. This 3335 * should still give an idea about rx rate to the user. 3336 */ 3337 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); 3338 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL); 3339 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL, 3340 NULL, peer_id, frag); 3341 ath10k_htt_rx_h_enqueue(ar, &amsdu, status); 3342 break; 3343 case -EAGAIN: 3344 fallthrough; 3345 default: 3346 /* Should not happen. */ 3347 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret); 3348 htt->rx_confused = true; 3349 __skb_queue_purge(&list); 3350 return -EIO; 3351 } 3352 } 3353 return ret; 3354 } 3355 3356 static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, 3357 const __le32 *resp_ids, 3358 int num_resp_ids) 3359 { 3360 int i; 3361 u32 resp_id; 3362 3363 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n", 3364 num_resp_ids); 3365 3366 for (i = 0; i < num_resp_ids; i++) { 3367 resp_id = le32_to_cpu(resp_ids[i]); 3368 3369 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n", 3370 resp_id); 3371 3372 /* TODO: free resp_id */ 3373 } 3374 } 3375 3376 static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb) 3377 { 3378 struct ieee80211_hw *hw = ar->hw; 3379 struct ieee80211_txq *txq; 3380 struct htt_resp *resp = (struct htt_resp *)skb->data; 3381 struct htt_tx_fetch_record *record; 3382 size_t len; 3383 size_t max_num_bytes; 3384 size_t max_num_msdus; 3385 size_t num_bytes; 3386 size_t num_msdus; 3387 const __le32 *resp_ids; 3388 u16 num_records; 3389 u16 num_resp_ids; 3390 u16 peer_id; 3391 u8 tid; 3392 int ret; 3393 int i; 3394 bool may_tx; 3395 3396 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n"); 3397 3398 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind); 3399 if (unlikely(skb->len < len)) { 3400 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n"); 3401 return; 3402 } 3403 3404 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records); 3405 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids); 3406 3407 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records; 3408 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids; 3409 3410 if (unlikely(skb->len < len)) { 3411 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n"); 3412 return; 3413 } 3414 3415 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n", 3416 num_records, num_resp_ids, 3417 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num)); 3418 3419 if (!ar->htt.tx_q_state.enabled) { 3420 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n"); 3421 return; 3422 } 3423 3424 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) { 3425 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n"); 3426 return; 3427 } 3428 3429 rcu_read_lock(); 3430 3431 for (i = 0; i < num_records; i++) { 3432 record = &resp->tx_fetch_ind.records[i]; 3433 peer_id = MS(le16_to_cpu(record->info), 3434 HTT_TX_FETCH_RECORD_INFO_PEER_ID); 3435 tid = MS(le16_to_cpu(record->info), 3436 HTT_TX_FETCH_RECORD_INFO_TID); 3437 max_num_msdus = le16_to_cpu(record->num_msdus); 3438 max_num_bytes = le32_to_cpu(record->num_bytes); 3439 3440 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n", 3441 i, peer_id, tid, max_num_msdus, max_num_bytes); 3442 3443 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3444 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3445 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3446 peer_id, tid); 3447 continue; 3448 } 3449 3450 spin_lock_bh(&ar->data_lock); 3451 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3452 spin_unlock_bh(&ar->data_lock); 3453 3454 /* It is okay to release the lock and use txq because RCU read 3455 * lock is held. 3456 */ 3457 3458 if (unlikely(!txq)) { 3459 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3460 peer_id, tid); 3461 continue; 3462 } 3463 3464 num_msdus = 0; 3465 num_bytes = 0; 3466 3467 ieee80211_txq_schedule_start(hw, txq->ac); 3468 may_tx = ieee80211_txq_may_transmit(hw, txq); 3469 while (num_msdus < max_num_msdus && 3470 num_bytes < max_num_bytes) { 3471 if (!may_tx) 3472 break; 3473 3474 ret = ath10k_mac_tx_push_txq(hw, txq); 3475 if (ret < 0) 3476 break; 3477 3478 num_msdus++; 3479 num_bytes += ret; 3480 } 3481 ieee80211_return_txq(hw, txq, false); 3482 ieee80211_txq_schedule_end(hw, txq->ac); 3483 3484 record->num_msdus = cpu_to_le16(num_msdus); 3485 record->num_bytes = cpu_to_le32(num_bytes); 3486 3487 ath10k_htt_tx_txq_recalc(hw, txq); 3488 } 3489 3490 rcu_read_unlock(); 3491 3492 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind); 3493 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids); 3494 3495 ret = ath10k_htt_tx_fetch_resp(ar, 3496 resp->tx_fetch_ind.token, 3497 resp->tx_fetch_ind.fetch_seq_num, 3498 resp->tx_fetch_ind.records, 3499 num_records); 3500 if (unlikely(ret)) { 3501 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n", 3502 le32_to_cpu(resp->tx_fetch_ind.token), ret); 3503 /* FIXME: request fw restart */ 3504 } 3505 3506 ath10k_htt_tx_txq_sync(ar); 3507 } 3508 3509 static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar, 3510 struct sk_buff *skb) 3511 { 3512 const struct htt_resp *resp = (void *)skb->data; 3513 size_t len; 3514 int num_resp_ids; 3515 3516 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n"); 3517 3518 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm); 3519 if (unlikely(skb->len < len)) { 3520 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n"); 3521 return; 3522 } 3523 3524 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids); 3525 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids; 3526 3527 if (unlikely(skb->len < len)) { 3528 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n"); 3529 return; 3530 } 3531 3532 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, 3533 resp->tx_fetch_confirm.resp_ids, 3534 num_resp_ids); 3535 } 3536 3537 static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar, 3538 struct sk_buff *skb) 3539 { 3540 const struct htt_resp *resp = (void *)skb->data; 3541 const struct htt_tx_mode_switch_record *record; 3542 struct ieee80211_txq *txq; 3543 struct ath10k_txq *artxq; 3544 size_t len; 3545 size_t num_records; 3546 enum htt_tx_mode_switch_mode mode; 3547 bool enable; 3548 u16 info0; 3549 u16 info1; 3550 u16 threshold; 3551 u16 peer_id; 3552 u8 tid; 3553 int i; 3554 3555 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n"); 3556 3557 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind); 3558 if (unlikely(skb->len < len)) { 3559 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n"); 3560 return; 3561 } 3562 3563 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0); 3564 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1); 3565 3566 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE); 3567 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3568 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE); 3569 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3570 3571 ath10k_dbg(ar, ATH10K_DBG_HTT, 3572 "htt rx tx mode switch ind info0 0x%04x info1 0x%04x enable %d num records %zd mode %d threshold %u\n", 3573 info0, info1, enable, num_records, mode, threshold); 3574 3575 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records; 3576 3577 if (unlikely(skb->len < len)) { 3578 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n"); 3579 return; 3580 } 3581 3582 switch (mode) { 3583 case HTT_TX_MODE_SWITCH_PUSH: 3584 case HTT_TX_MODE_SWITCH_PUSH_PULL: 3585 break; 3586 default: 3587 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n", 3588 mode); 3589 return; 3590 } 3591 3592 if (!enable) 3593 return; 3594 3595 ar->htt.tx_q_state.enabled = enable; 3596 ar->htt.tx_q_state.mode = mode; 3597 ar->htt.tx_q_state.num_push_allowed = threshold; 3598 3599 rcu_read_lock(); 3600 3601 for (i = 0; i < num_records; i++) { 3602 record = &resp->tx_mode_switch_ind.records[i]; 3603 info0 = le16_to_cpu(record->info0); 3604 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID); 3605 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID); 3606 3607 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3608 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3609 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3610 peer_id, tid); 3611 continue; 3612 } 3613 3614 spin_lock_bh(&ar->data_lock); 3615 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3616 spin_unlock_bh(&ar->data_lock); 3617 3618 /* It is okay to release the lock and use txq because RCU read 3619 * lock is held. 3620 */ 3621 3622 if (unlikely(!txq)) { 3623 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3624 peer_id, tid); 3625 continue; 3626 } 3627 3628 spin_lock_bh(&ar->htt.tx_lock); 3629 artxq = (void *)txq->drv_priv; 3630 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus); 3631 spin_unlock_bh(&ar->htt.tx_lock); 3632 } 3633 3634 rcu_read_unlock(); 3635 3636 ath10k_mac_tx_push_pending(ar); 3637 } 3638 3639 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 3640 { 3641 bool release; 3642 3643 release = ath10k_htt_t2h_msg_handler(ar, skb); 3644 3645 /* Free the indication buffer */ 3646 if (release) 3647 dev_kfree_skb_any(skb); 3648 } 3649 3650 static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate) 3651 { 3652 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, 3653 18, 24, 36, 48, 54}; 3654 int i; 3655 3656 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { 3657 if (rate == legacy_rates[i]) 3658 return i; 3659 } 3660 3661 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate); 3662 return -EINVAL; 3663 } 3664 3665 static void 3666 ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar, 3667 struct ath10k_sta *arsta, 3668 struct ath10k_per_peer_tx_stats *pstats, 3669 s8 legacy_rate_idx) 3670 { 3671 struct rate_info *txrate = &arsta->txrate; 3672 struct ath10k_htt_tx_stats *tx_stats; 3673 int idx, ht_idx, gi, mcs, bw, nss; 3674 unsigned long flags; 3675 3676 if (!arsta->tx_stats) 3677 return; 3678 3679 tx_stats = arsta->tx_stats; 3680 flags = txrate->flags; 3681 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags); 3682 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode); 3683 bw = txrate->bw; 3684 nss = txrate->nss; 3685 ht_idx = mcs + (nss - 1) * 8; 3686 idx = mcs * 8 + 8 * 10 * (nss - 1); 3687 idx += bw * 2 + gi; 3688 3689 #define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name] 3690 3691 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) { 3692 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes; 3693 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts; 3694 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes; 3695 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts; 3696 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes; 3697 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts; 3698 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3699 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes; 3700 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts; 3701 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes; 3702 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts; 3703 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes; 3704 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts; 3705 } else { 3706 mcs = legacy_rate_idx; 3707 3708 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes; 3709 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts; 3710 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes; 3711 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts; 3712 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes; 3713 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts; 3714 } 3715 3716 if (ATH10K_HW_AMPDU(pstats->flags)) { 3717 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags); 3718 3719 if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3720 STATS_OP_FMT(AMPDU).ht[0][ht_idx] += 3721 pstats->succ_bytes + pstats->retry_bytes; 3722 STATS_OP_FMT(AMPDU).ht[1][ht_idx] += 3723 pstats->succ_pkts + pstats->retry_pkts; 3724 } else { 3725 STATS_OP_FMT(AMPDU).vht[0][mcs] += 3726 pstats->succ_bytes + pstats->retry_bytes; 3727 STATS_OP_FMT(AMPDU).vht[1][mcs] += 3728 pstats->succ_pkts + pstats->retry_pkts; 3729 } 3730 STATS_OP_FMT(AMPDU).bw[0][bw] += 3731 pstats->succ_bytes + pstats->retry_bytes; 3732 STATS_OP_FMT(AMPDU).nss[0][nss - 1] += 3733 pstats->succ_bytes + pstats->retry_bytes; 3734 STATS_OP_FMT(AMPDU).gi[0][gi] += 3735 pstats->succ_bytes + pstats->retry_bytes; 3736 STATS_OP_FMT(AMPDU).rate_table[0][idx] += 3737 pstats->succ_bytes + pstats->retry_bytes; 3738 STATS_OP_FMT(AMPDU).bw[1][bw] += 3739 pstats->succ_pkts + pstats->retry_pkts; 3740 STATS_OP_FMT(AMPDU).nss[1][nss - 1] += 3741 pstats->succ_pkts + pstats->retry_pkts; 3742 STATS_OP_FMT(AMPDU).gi[1][gi] += 3743 pstats->succ_pkts + pstats->retry_pkts; 3744 STATS_OP_FMT(AMPDU).rate_table[1][idx] += 3745 pstats->succ_pkts + pstats->retry_pkts; 3746 } else { 3747 tx_stats->ack_fails += 3748 ATH10K_HW_BA_FAIL(pstats->flags); 3749 } 3750 3751 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes; 3752 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes; 3753 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes; 3754 3755 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts; 3756 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts; 3757 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts; 3758 3759 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes; 3760 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes; 3761 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes; 3762 3763 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts; 3764 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts; 3765 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts; 3766 3767 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes; 3768 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes; 3769 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes; 3770 3771 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts; 3772 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts; 3773 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts; 3774 3775 if (txrate->flags >= RATE_INFO_FLAGS_MCS) { 3776 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes; 3777 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts; 3778 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes; 3779 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts; 3780 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes; 3781 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts; 3782 } 3783 3784 tx_stats->tx_duration += pstats->duration; 3785 } 3786 3787 static void 3788 ath10k_update_per_peer_tx_stats(struct ath10k *ar, 3789 struct ieee80211_sta *sta, 3790 struct ath10k_per_peer_tx_stats *peer_stats) 3791 { 3792 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; 3793 struct ieee80211_chanctx_conf *conf = NULL; 3794 u8 rate = 0, sgi; 3795 s8 rate_idx = 0; 3796 bool skip_auto_rate; 3797 struct rate_info txrate; 3798 3799 lockdep_assert_held(&ar->data_lock); 3800 3801 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); 3802 txrate.bw = ATH10K_HW_BW(peer_stats->flags); 3803 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); 3804 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); 3805 sgi = ATH10K_HW_GI(peer_stats->flags); 3806 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags); 3807 3808 /* Firmware's rate control skips broadcast/management frames, 3809 * if host has configure fixed rates and in some other special cases. 3810 */ 3811 if (skip_auto_rate) 3812 return; 3813 3814 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) { 3815 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs); 3816 return; 3817 } 3818 3819 if (txrate.flags == WMI_RATE_PREAMBLE_HT && 3820 (txrate.mcs > 7 || txrate.nss < 1)) { 3821 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats", 3822 txrate.mcs, txrate.nss); 3823 return; 3824 } 3825 3826 memset(&arsta->txrate, 0, sizeof(arsta->txrate)); 3827 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status)); 3828 if (txrate.flags == WMI_RATE_PREAMBLE_CCK || 3829 txrate.flags == WMI_RATE_PREAMBLE_OFDM) { 3830 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); 3831 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ 3832 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK) 3833 rate = 5; 3834 rate_idx = ath10k_get_legacy_rate_idx(ar, rate); 3835 if (rate_idx < 0) 3836 return; 3837 arsta->txrate.legacy = rate; 3838 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { 3839 arsta->txrate.flags = RATE_INFO_FLAGS_MCS; 3840 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1); 3841 } else { 3842 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; 3843 arsta->txrate.mcs = txrate.mcs; 3844 } 3845 3846 switch (txrate.flags) { 3847 case WMI_RATE_PREAMBLE_OFDM: 3848 if (arsta->arvif && arsta->arvif->vif) 3849 conf = rcu_dereference(arsta->arvif->vif->bss_conf.chanctx_conf); 3850 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ) 3851 arsta->tx_info.status.rates[0].idx = rate_idx - 4; 3852 break; 3853 case WMI_RATE_PREAMBLE_CCK: 3854 arsta->tx_info.status.rates[0].idx = rate_idx; 3855 if (sgi) 3856 arsta->tx_info.status.rates[0].flags |= 3857 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE | 3858 IEEE80211_TX_RC_SHORT_GI); 3859 break; 3860 case WMI_RATE_PREAMBLE_HT: 3861 arsta->tx_info.status.rates[0].idx = 3862 txrate.mcs + ((txrate.nss - 1) * 8); 3863 if (sgi) 3864 arsta->tx_info.status.rates[0].flags |= 3865 IEEE80211_TX_RC_SHORT_GI; 3866 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS; 3867 break; 3868 case WMI_RATE_PREAMBLE_VHT: 3869 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0], 3870 txrate.mcs, txrate.nss); 3871 if (sgi) 3872 arsta->tx_info.status.rates[0].flags |= 3873 IEEE80211_TX_RC_SHORT_GI; 3874 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS; 3875 break; 3876 } 3877 3878 arsta->txrate.nss = txrate.nss; 3879 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw); 3880 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate); 3881 if (sgi) 3882 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 3883 3884 switch (arsta->txrate.bw) { 3885 case RATE_INFO_BW_40: 3886 arsta->tx_info.status.rates[0].flags |= 3887 IEEE80211_TX_RC_40_MHZ_WIDTH; 3888 break; 3889 case RATE_INFO_BW_80: 3890 arsta->tx_info.status.rates[0].flags |= 3891 IEEE80211_TX_RC_80_MHZ_WIDTH; 3892 break; 3893 case RATE_INFO_BW_160: 3894 arsta->tx_info.status.rates[0].flags |= 3895 IEEE80211_TX_RC_160_MHZ_WIDTH; 3896 break; 3897 } 3898 3899 if (peer_stats->succ_pkts) { 3900 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK; 3901 arsta->tx_info.status.rates[0].count = 1; 3902 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info); 3903 } 3904 3905 if (ar->htt.disable_tx_comp) { 3906 arsta->tx_failed += peer_stats->failed_pkts; 3907 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n", 3908 arsta->tx_failed); 3909 } 3910 3911 arsta->tx_retries += peer_stats->retry_pkts; 3912 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries); 3913 3914 if (ath10k_debug_is_extd_tx_stats_enabled(ar)) 3915 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats, 3916 rate_idx); 3917 } 3918 3919 static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, 3920 struct sk_buff *skb) 3921 { 3922 struct htt_resp *resp = (struct htt_resp *)skb->data; 3923 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3924 struct htt_per_peer_tx_stats_ind *tx_stats; 3925 struct ieee80211_sta *sta; 3926 struct ath10k_peer *peer; 3927 int peer_id, i; 3928 u8 ppdu_len, num_ppdu; 3929 3930 num_ppdu = resp->peer_tx_stats.num_ppdu; 3931 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); 3932 3933 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { 3934 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); 3935 return; 3936 } 3937 3938 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3939 (resp->peer_tx_stats.payload); 3940 peer_id = __le16_to_cpu(tx_stats->peer_id); 3941 3942 rcu_read_lock(); 3943 spin_lock_bh(&ar->data_lock); 3944 peer = ath10k_peer_find_by_id(ar, peer_id); 3945 if (!peer || !peer->sta) { 3946 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n", 3947 peer_id); 3948 goto out; 3949 } 3950 3951 sta = peer->sta; 3952 for (i = 0; i < num_ppdu; i++) { 3953 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3954 (resp->peer_tx_stats.payload + i * ppdu_len); 3955 3956 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); 3957 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); 3958 p_tx_stats->failed_bytes = 3959 __le32_to_cpu(tx_stats->failed_bytes); 3960 p_tx_stats->ratecode = tx_stats->ratecode; 3961 p_tx_stats->flags = tx_stats->flags; 3962 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); 3963 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); 3964 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); 3965 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration); 3966 3967 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 3968 } 3969 3970 out: 3971 spin_unlock_bh(&ar->data_lock); 3972 rcu_read_unlock(); 3973 } 3974 3975 static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data) 3976 { 3977 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data; 3978 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3979 struct ath10k_10_2_peer_tx_stats *tx_stats; 3980 struct ieee80211_sta *sta; 3981 struct ath10k_peer *peer; 3982 u16 log_type = __le16_to_cpu(hdr->log_type); 3983 u32 peer_id = 0, i; 3984 3985 if (log_type != ATH_PKTLOG_TYPE_TX_STAT) 3986 return; 3987 3988 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) + 3989 ATH10K_10_2_TX_STATS_OFFSET); 3990 3991 if (!tx_stats->tx_ppdu_cnt) 3992 return; 3993 3994 peer_id = tx_stats->peer_id; 3995 3996 rcu_read_lock(); 3997 spin_lock_bh(&ar->data_lock); 3998 peer = ath10k_peer_find_by_id(ar, peer_id); 3999 if (!peer || !peer->sta) { 4000 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n", 4001 peer_id); 4002 goto out; 4003 } 4004 4005 sta = peer->sta; 4006 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) { 4007 p_tx_stats->succ_bytes = 4008 __le16_to_cpu(tx_stats->success_bytes[i]); 4009 p_tx_stats->retry_bytes = 4010 __le16_to_cpu(tx_stats->retry_bytes[i]); 4011 p_tx_stats->failed_bytes = 4012 __le16_to_cpu(tx_stats->failed_bytes[i]); 4013 p_tx_stats->ratecode = tx_stats->ratecode[i]; 4014 p_tx_stats->flags = tx_stats->flags[i]; 4015 p_tx_stats->succ_pkts = tx_stats->success_pkts[i]; 4016 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i]; 4017 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i]; 4018 4019 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 4020 } 4021 spin_unlock_bh(&ar->data_lock); 4022 rcu_read_unlock(); 4023 4024 return; 4025 4026 out: 4027 spin_unlock_bh(&ar->data_lock); 4028 rcu_read_unlock(); 4029 } 4030 4031 static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type) 4032 { 4033 switch (sec_type) { 4034 case HTT_SECURITY_TKIP: 4035 case HTT_SECURITY_TKIP_NOMIC: 4036 case HTT_SECURITY_AES_CCMP: 4037 return 48; 4038 default: 4039 return 0; 4040 } 4041 } 4042 4043 static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar, 4044 struct htt_security_indication *ev) 4045 { 4046 enum htt_txrx_sec_cast_type sec_index; 4047 enum htt_security_types sec_type; 4048 struct ath10k_peer *peer; 4049 4050 spin_lock_bh(&ar->data_lock); 4051 4052 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id)); 4053 if (!peer) { 4054 ath10k_warn(ar, "failed to find peer id %d for security indication", 4055 __le16_to_cpu(ev->peer_id)); 4056 goto out; 4057 } 4058 4059 sec_type = MS(ev->flags, HTT_SECURITY_TYPE); 4060 4061 if (ev->flags & HTT_SECURITY_IS_UNICAST) 4062 sec_index = HTT_TXRX_SEC_UCAST; 4063 else 4064 sec_index = HTT_TXRX_SEC_MCAST; 4065 4066 peer->rx_pn[sec_index].sec_type = sec_type; 4067 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type); 4068 4069 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid)); 4070 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn)); 4071 4072 out: 4073 spin_unlock_bh(&ar->data_lock); 4074 } 4075 4076 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 4077 { 4078 struct ath10k_htt *htt = &ar->htt; 4079 struct htt_resp *resp = (struct htt_resp *)skb->data; 4080 enum htt_t2h_msg_type type; 4081 4082 /* confirm alignment */ 4083 if (!IS_ALIGNED((unsigned long)skb->data, 4)) 4084 ath10k_warn(ar, "unaligned htt message, expect trouble\n"); 4085 4086 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n", 4087 resp->hdr.msg_type); 4088 4089 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) { 4090 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X", 4091 resp->hdr.msg_type, ar->htt.t2h_msg_types_max); 4092 return true; 4093 } 4094 type = ar->htt.t2h_msg_types[resp->hdr.msg_type]; 4095 4096 switch (type) { 4097 case HTT_T2H_MSG_TYPE_VERSION_CONF: { 4098 htt->target_version_major = resp->ver_resp.major; 4099 htt->target_version_minor = resp->ver_resp.minor; 4100 complete(&htt->target_version_received); 4101 break; 4102 } 4103 case HTT_T2H_MSG_TYPE_RX_IND: 4104 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) { 4105 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind); 4106 } else { 4107 skb_queue_tail(&htt->rx_indication_head, skb); 4108 return false; 4109 } 4110 break; 4111 case HTT_T2H_MSG_TYPE_PEER_MAP: { 4112 struct htt_peer_map_event ev = { 4113 .vdev_id = resp->peer_map.vdev_id, 4114 .peer_id = __le16_to_cpu(resp->peer_map.peer_id), 4115 }; 4116 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr)); 4117 ath10k_peer_map_event(htt, &ev); 4118 break; 4119 } 4120 case HTT_T2H_MSG_TYPE_PEER_UNMAP: { 4121 struct htt_peer_unmap_event ev = { 4122 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id), 4123 }; 4124 ath10k_peer_unmap_event(htt, &ev); 4125 break; 4126 } 4127 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: { 4128 struct htt_tx_done tx_done = {}; 4129 struct ath10k_htt *htt = &ar->htt; 4130 struct ath10k_htc *htc = &ar->htc; 4131 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4132 int status = __le32_to_cpu(resp->mgmt_tx_completion.status); 4133 int info = __le32_to_cpu(resp->mgmt_tx_completion.info); 4134 4135 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); 4136 4137 switch (status) { 4138 case HTT_MGMT_TX_STATUS_OK: 4139 tx_done.status = HTT_TX_COMPL_STATE_ACK; 4140 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, 4141 ar->wmi.svc_map) && 4142 (resp->mgmt_tx_completion.flags & 4143 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) { 4144 tx_done.ack_rssi = 4145 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK, 4146 info); 4147 } 4148 break; 4149 case HTT_MGMT_TX_STATUS_RETRY: 4150 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 4151 break; 4152 case HTT_MGMT_TX_STATUS_DROP: 4153 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 4154 break; 4155 } 4156 4157 if (htt->disable_tx_comp) { 4158 spin_lock_bh(&htc->tx_lock); 4159 ep->tx_credits++; 4160 spin_unlock_bh(&htc->tx_lock); 4161 } 4162 4163 status = ath10k_txrx_tx_unref(htt, &tx_done); 4164 if (!status) { 4165 spin_lock_bh(&htt->tx_lock); 4166 ath10k_htt_tx_mgmt_dec_pending(htt); 4167 spin_unlock_bh(&htt->tx_lock); 4168 } 4169 break; 4170 } 4171 case HTT_T2H_MSG_TYPE_TX_COMPL_IND: 4172 ath10k_htt_rx_tx_compl_ind(htt->ar, skb); 4173 break; 4174 case HTT_T2H_MSG_TYPE_SEC_IND: { 4175 struct ath10k *ar = htt->ar; 4176 struct htt_security_indication *ev = &resp->security_indication; 4177 4178 ath10k_htt_rx_sec_ind_handler(ar, ev); 4179 ath10k_dbg(ar, ATH10K_DBG_HTT, 4180 "sec ind peer_id %d unicast %d type %d\n", 4181 __le16_to_cpu(ev->peer_id), 4182 !!(ev->flags & HTT_SECURITY_IS_UNICAST), 4183 MS(ev->flags, HTT_SECURITY_TYPE)); 4184 complete(&ar->install_key_done); 4185 break; 4186 } 4187 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: { 4188 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4189 skb->data, skb->len); 4190 atomic_inc(&htt->num_mpdus_ready); 4191 4192 return ath10k_htt_rx_proc_rx_frag_ind(htt, 4193 &resp->rx_frag_ind, 4194 skb); 4195 } 4196 case HTT_T2H_MSG_TYPE_TEST: 4197 break; 4198 case HTT_T2H_MSG_TYPE_STATS_CONF: 4199 trace_ath10k_htt_stats(ar, skb->data, skb->len); 4200 break; 4201 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND: 4202 /* Firmware can return tx frames if it's unable to fully 4203 * process them and suspects host may be able to fix it. ath10k 4204 * sends all tx frames as already inspected so this shouldn't 4205 * happen unless fw has a bug. 4206 */ 4207 ath10k_warn(ar, "received an unexpected htt tx inspect event\n"); 4208 break; 4209 case HTT_T2H_MSG_TYPE_RX_ADDBA: 4210 ath10k_htt_rx_addba(ar, resp); 4211 break; 4212 case HTT_T2H_MSG_TYPE_RX_DELBA: 4213 ath10k_htt_rx_delba(ar, resp); 4214 break; 4215 case HTT_T2H_MSG_TYPE_PKTLOG: { 4216 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload, 4217 skb->len - 4218 offsetof(struct htt_resp, 4219 pktlog_msg.payload)); 4220 4221 if (ath10k_peer_stats_enabled(ar)) 4222 ath10k_fetch_10_2_tx_stats(ar, 4223 resp->pktlog_msg.payload); 4224 break; 4225 } 4226 case HTT_T2H_MSG_TYPE_RX_FLUSH: { 4227 /* Ignore this event because mac80211 takes care of Rx 4228 * aggregation reordering. 4229 */ 4230 break; 4231 } 4232 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: { 4233 skb_queue_tail(&htt->rx_in_ord_compl_q, skb); 4234 return false; 4235 } 4236 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: { 4237 struct ath10k_htt *htt = &ar->htt; 4238 struct ath10k_htc *htc = &ar->htc; 4239 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4240 u32 msg_word = __le32_to_cpu(*(__le32 *)resp); 4241 int htt_credit_delta; 4242 4243 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word); 4244 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word)) 4245 htt_credit_delta = -htt_credit_delta; 4246 4247 ath10k_dbg(ar, ATH10K_DBG_HTT, 4248 "htt credit update delta %d\n", 4249 htt_credit_delta); 4250 4251 if (htt->disable_tx_comp) { 4252 spin_lock_bh(&htc->tx_lock); 4253 ep->tx_credits += htt_credit_delta; 4254 spin_unlock_bh(&htc->tx_lock); 4255 ath10k_dbg(ar, ATH10K_DBG_HTT, 4256 "htt credit total %d\n", 4257 ep->tx_credits); 4258 ep->ep_ops.ep_tx_credits(htc->ar); 4259 } 4260 break; 4261 } 4262 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: { 4263 u32 phymode = __le32_to_cpu(resp->chan_change.phymode); 4264 u32 freq = __le32_to_cpu(resp->chan_change.freq); 4265 4266 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq); 4267 ath10k_dbg(ar, ATH10K_DBG_HTT, 4268 "htt chan change freq %u phymode %s\n", 4269 freq, ath10k_wmi_phymode_str(phymode)); 4270 break; 4271 } 4272 case HTT_T2H_MSG_TYPE_AGGR_CONF: 4273 break; 4274 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: { 4275 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC); 4276 4277 if (!tx_fetch_ind) { 4278 ath10k_warn(ar, "failed to copy htt tx fetch ind\n"); 4279 break; 4280 } 4281 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind); 4282 break; 4283 } 4284 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM: 4285 ath10k_htt_rx_tx_fetch_confirm(ar, skb); 4286 break; 4287 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: 4288 ath10k_htt_rx_tx_mode_switch_ind(ar, skb); 4289 break; 4290 case HTT_T2H_MSG_TYPE_PEER_STATS: 4291 ath10k_htt_fetch_peer_stats(ar, skb); 4292 break; 4293 case HTT_T2H_MSG_TYPE_EN_STATS: 4294 default: 4295 ath10k_warn(ar, "htt event (%d) not handled\n", 4296 resp->hdr.msg_type); 4297 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4298 skb->data, skb->len); 4299 break; 4300 } 4301 return true; 4302 } 4303 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler); 4304 4305 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, 4306 struct sk_buff *skb) 4307 { 4308 trace_ath10k_htt_pktlog(ar, skb->data, skb->len); 4309 dev_kfree_skb_any(skb); 4310 } 4311 EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler); 4312 4313 static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget) 4314 { 4315 struct sk_buff *skb; 4316 4317 while (quota < budget) { 4318 if (skb_queue_empty(&ar->htt.rx_msdus_q)) 4319 break; 4320 4321 skb = skb_dequeue(&ar->htt.rx_msdus_q); 4322 if (!skb) 4323 break; 4324 ath10k_process_rx(ar, skb); 4325 quota++; 4326 } 4327 4328 return quota; 4329 } 4330 4331 int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget) 4332 { 4333 struct htt_resp *resp; 4334 struct ath10k_htt *htt = &ar->htt; 4335 struct sk_buff *skb; 4336 bool release; 4337 int quota; 4338 4339 for (quota = 0; quota < budget; quota++) { 4340 skb = skb_dequeue(&htt->rx_indication_head); 4341 if (!skb) 4342 break; 4343 4344 resp = (struct htt_resp *)skb->data; 4345 4346 release = ath10k_htt_rx_proc_rx_ind_hl(htt, 4347 &resp->rx_ind_hl, 4348 skb, 4349 HTT_RX_PN_CHECK, 4350 HTT_RX_NON_TKIP_MIC); 4351 4352 if (release) 4353 dev_kfree_skb_any(skb); 4354 4355 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n", 4356 skb_queue_len(&htt->rx_indication_head)); 4357 } 4358 return quota; 4359 } 4360 EXPORT_SYMBOL(ath10k_htt_rx_hl_indication); 4361 4362 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) 4363 { 4364 struct ath10k_htt *htt = &ar->htt; 4365 struct htt_tx_done tx_done = {}; 4366 struct sk_buff_head tx_ind_q; 4367 struct sk_buff *skb; 4368 unsigned long flags; 4369 int quota = 0, done, ret; 4370 bool resched_napi = false; 4371 4372 __skb_queue_head_init(&tx_ind_q); 4373 4374 /* Process pending frames before dequeuing more data 4375 * from hardware. 4376 */ 4377 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4378 if (quota == budget) { 4379 resched_napi = true; 4380 goto exit; 4381 } 4382 4383 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) { 4384 spin_lock_bh(&htt->rx_ring.lock); 4385 ret = ath10k_htt_rx_in_ord_ind(ar, skb); 4386 spin_unlock_bh(&htt->rx_ring.lock); 4387 4388 dev_kfree_skb_any(skb); 4389 if (ret == -EIO) { 4390 resched_napi = true; 4391 goto exit; 4392 } 4393 } 4394 4395 while (atomic_read(&htt->num_mpdus_ready)) { 4396 ret = ath10k_htt_rx_handle_amsdu(htt); 4397 if (ret == -EIO) { 4398 resched_napi = true; 4399 goto exit; 4400 } 4401 atomic_dec(&htt->num_mpdus_ready); 4402 } 4403 4404 /* Deliver received data after processing data from hardware */ 4405 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4406 4407 /* From NAPI documentation: 4408 * The napi poll() function may also process TX completions, in which 4409 * case if it processes the entire TX ring then it should count that 4410 * work as the rest of the budget. 4411 */ 4412 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo)) 4413 quota = budget; 4414 4415 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized. 4416 * From kfifo_get() documentation: 4417 * Note that with only one concurrent reader and one concurrent writer, 4418 * you don't need extra locking to use these macro. 4419 */ 4420 while (kfifo_get(&htt->txdone_fifo, &tx_done)) 4421 ath10k_txrx_tx_unref(htt, &tx_done); 4422 4423 ath10k_mac_tx_push_pending(ar); 4424 4425 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags); 4426 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q); 4427 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags); 4428 4429 while ((skb = __skb_dequeue(&tx_ind_q))) { 4430 ath10k_htt_rx_tx_fetch_ind(ar, skb); 4431 dev_kfree_skb_any(skb); 4432 } 4433 4434 exit: 4435 ath10k_htt_rx_msdu_buff_replenish(htt); 4436 /* In case of rx failure or more data to read, report budget 4437 * to reschedule NAPI poll 4438 */ 4439 done = resched_napi ? budget : quota; 4440 4441 return done; 4442 } 4443 EXPORT_SYMBOL(ath10k_htt_txrx_compl_task); 4444 4445 static const struct ath10k_htt_rx_ops htt_rx_ops_32 = { 4446 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32, 4447 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32, 4448 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32, 4449 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32, 4450 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32, 4451 }; 4452 4453 static const struct ath10k_htt_rx_ops htt_rx_ops_64 = { 4454 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64, 4455 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64, 4456 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64, 4457 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64, 4458 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64, 4459 }; 4460 4461 static const struct ath10k_htt_rx_ops htt_rx_ops_hl = { 4462 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl, 4463 }; 4464 4465 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt) 4466 { 4467 struct ath10k *ar = htt->ar; 4468 4469 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 4470 htt->rx_ops = &htt_rx_ops_hl; 4471 else if (ar->hw_params.target_64bit) 4472 htt->rx_ops = &htt_rx_ops_64; 4473 else 4474 htt->rx_ops = &htt_rx_ops_32; 4475 } 4476