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 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. 7 */ 8 9#include "core.h" 10#include "htc.h" 11#include "htt.h" 12#include "txrx.h" 13#include "debug.h" 14#include "trace.h" 15#include "mac.h" 16 17#include <linux/log2.h> 18#include <linux/bitfield.h> 19 20/* when under memory pressure rx ring refill may fail and needs a retry */ 21#define HTT_RX_RING_REFILL_RETRY_MS 50 22 23#define HTT_RX_RING_REFILL_RESCHED_MS 5 24 25/* shortcut to interpret a raw memory buffer as a rx descriptor */ 26#define HTT_RX_BUF_TO_RX_DESC(hw, buf) ath10k_htt_rx_desc_from_raw_buffer(hw, buf) 27 28static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb); 29 30static struct sk_buff * 31ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr) 32{ 33 struct ath10k_skb_rxcb *rxcb; 34 35 hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr) 36 if (rxcb->paddr == paddr) 37 return ATH10K_RXCB_SKB(rxcb); 38 39 WARN_ON_ONCE(1); 40 return NULL; 41} 42 43static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt) 44{ 45 struct sk_buff *skb; 46 struct ath10k_skb_rxcb *rxcb; 47 struct hlist_node *n; 48 int i; 49 50 if (htt->rx_ring.in_ord_rx) { 51 hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) { 52 skb = ATH10K_RXCB_SKB(rxcb); 53 dma_unmap_single(htt->ar->dev, rxcb->paddr, 54 skb->len + skb_tailroom(skb), 55 DMA_FROM_DEVICE); 56 hash_del(&rxcb->hlist); 57 dev_kfree_skb_any(skb); 58 } 59 } else { 60 for (i = 0; i < htt->rx_ring.size; i++) { 61 skb = htt->rx_ring.netbufs_ring[i]; 62 if (!skb) 63 continue; 64 65 rxcb = ATH10K_SKB_RXCB(skb); 66 dma_unmap_single(htt->ar->dev, rxcb->paddr, 67 skb->len + skb_tailroom(skb), 68 DMA_FROM_DEVICE); 69 dev_kfree_skb_any(skb); 70 } 71 } 72 73 htt->rx_ring.fill_cnt = 0; 74 hash_init(htt->rx_ring.skb_table); 75 memset(htt->rx_ring.netbufs_ring, 0, 76 htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0])); 77} 78 79static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt) 80{ 81 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32); 82} 83 84static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt) 85{ 86 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64); 87} 88 89static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt, 90 void *vaddr) 91{ 92 htt->rx_ring.paddrs_ring_32 = vaddr; 93} 94 95static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt, 96 void *vaddr) 97{ 98 htt->rx_ring.paddrs_ring_64 = vaddr; 99} 100 101static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt, 102 dma_addr_t paddr, int idx) 103{ 104 htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr); 105} 106 107static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt, 108 dma_addr_t paddr, int idx) 109{ 110 htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr); 111} 112 113static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx) 114{ 115 htt->rx_ring.paddrs_ring_32[idx] = 0; 116} 117 118static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx) 119{ 120 htt->rx_ring.paddrs_ring_64[idx] = 0; 121} 122 123static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt) 124{ 125 return (void *)htt->rx_ring.paddrs_ring_32; 126} 127 128static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt) 129{ 130 return (void *)htt->rx_ring.paddrs_ring_64; 131} 132 133static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 134{ 135 struct ath10k_hw_params *hw = &htt->ar->hw_params; 136 struct htt_rx_desc *rx_desc; 137 struct ath10k_skb_rxcb *rxcb; 138 struct sk_buff *skb; 139 dma_addr_t paddr; 140 int ret = 0, idx; 141 142 /* The Full Rx Reorder firmware has no way of telling the host 143 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring. 144 * To keep things simple make sure ring is always half empty. This 145 * guarantees there'll be no replenishment overruns possible. 146 */ 147 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2); 148 149 idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); 150 151 if (idx < 0 || idx >= htt->rx_ring.size) { 152 ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n"); 153 idx &= htt->rx_ring.size_mask; 154 ret = -ENOMEM; 155 goto fail; 156 } 157 158 while (num > 0) { 159 skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN); 160 if (!skb) { 161 ret = -ENOMEM; 162 goto fail; 163 } 164 165 if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN)) 166 skb_pull(skb, 167 PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) - 168 skb->data); 169 170 /* Clear rx_desc attention word before posting to Rx ring */ 171 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, skb->data); 172 ath10k_htt_rx_desc_get_attention(hw, rx_desc)->flags = __cpu_to_le32(0); 173 174 paddr = dma_map_single(htt->ar->dev, skb->data, 175 skb->len + skb_tailroom(skb), 176 DMA_FROM_DEVICE); 177 178 if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) { 179 dev_kfree_skb_any(skb); 180 ret = -ENOMEM; 181 goto fail; 182 } 183 184 rxcb = ATH10K_SKB_RXCB(skb); 185 rxcb->paddr = paddr; 186 htt->rx_ring.netbufs_ring[idx] = skb; 187 ath10k_htt_set_paddrs_ring(htt, paddr, idx); 188 htt->rx_ring.fill_cnt++; 189 190 if (htt->rx_ring.in_ord_rx) { 191 hash_add(htt->rx_ring.skb_table, 192 &ATH10K_SKB_RXCB(skb)->hlist, 193 paddr); 194 } 195 196 num--; 197 idx++; 198 idx &= htt->rx_ring.size_mask; 199 } 200 201fail: 202 /* 203 * Make sure the rx buffer is updated before available buffer 204 * index to avoid any potential rx ring corruption. 205 */ 206 mb(); 207 *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx); 208 return ret; 209} 210 211static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 212{ 213 lockdep_assert_held(&htt->rx_ring.lock); 214 return __ath10k_htt_rx_ring_fill_n(htt, num); 215} 216 217static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt) 218{ 219 int ret, num_deficit, num_to_fill; 220 221 /* Refilling the whole RX ring buffer proves to be a bad idea. The 222 * reason is RX may take up significant amount of CPU cycles and starve 223 * other tasks, e.g. TX on an ethernet device while acting as a bridge 224 * with ath10k wlan interface. This ended up with very poor performance 225 * once CPU the host system was overwhelmed with RX on ath10k. 226 * 227 * By limiting the number of refills the replenishing occurs 228 * progressively. This in turns makes use of the fact tasklets are 229 * processed in FIFO order. This means actual RX processing can starve 230 * out refilling. If there's not enough buffers on RX ring FW will not 231 * report RX until it is refilled with enough buffers. This 232 * automatically balances load wrt to CPU power. 233 * 234 * This probably comes at a cost of lower maximum throughput but 235 * improves the average and stability. 236 */ 237 spin_lock_bh(&htt->rx_ring.lock); 238 num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt; 239 num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit); 240 num_deficit -= num_to_fill; 241 ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill); 242 if (ret == -ENOMEM) { 243 /* 244 * Failed to fill it to the desired level - 245 * we'll start a timer and try again next time. 246 * As long as enough buffers are left in the ring for 247 * another A-MPDU rx, no special recovery is needed. 248 */ 249 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 250 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS)); 251 } else if (num_deficit > 0) { 252 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 253 msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS)); 254 } 255 spin_unlock_bh(&htt->rx_ring.lock); 256} 257 258static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t) 259{ 260 struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer); 261 262 ath10k_htt_rx_msdu_buff_replenish(htt); 263} 264 265int ath10k_htt_rx_ring_refill(struct ath10k *ar) 266{ 267 struct ath10k_htt *htt = &ar->htt; 268 int ret; 269 270 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 271 return 0; 272 273 spin_lock_bh(&htt->rx_ring.lock); 274 ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level - 275 htt->rx_ring.fill_cnt)); 276 277 if (ret) 278 ath10k_htt_rx_ring_free(htt); 279 280 spin_unlock_bh(&htt->rx_ring.lock); 281 282 return ret; 283} 284 285void ath10k_htt_rx_free(struct ath10k_htt *htt) 286{ 287 if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 288 return; 289 290 del_timer_sync(&htt->rx_ring.refill_retry_timer); 291 292 skb_queue_purge(&htt->rx_msdus_q); 293 skb_queue_purge(&htt->rx_in_ord_compl_q); 294 skb_queue_purge(&htt->tx_fetch_ind_q); 295 296 spin_lock_bh(&htt->rx_ring.lock); 297 ath10k_htt_rx_ring_free(htt); 298 spin_unlock_bh(&htt->rx_ring.lock); 299 300 dma_free_coherent(htt->ar->dev, 301 ath10k_htt_get_rx_ring_size(htt), 302 ath10k_htt_get_vaddr_ring(htt), 303 htt->rx_ring.base_paddr); 304 305 ath10k_htt_config_paddrs_ring(htt, NULL); 306 307 dma_free_coherent(htt->ar->dev, 308 sizeof(*htt->rx_ring.alloc_idx.vaddr), 309 htt->rx_ring.alloc_idx.vaddr, 310 htt->rx_ring.alloc_idx.paddr); 311 htt->rx_ring.alloc_idx.vaddr = NULL; 312 313 kfree(htt->rx_ring.netbufs_ring); 314 htt->rx_ring.netbufs_ring = NULL; 315} 316 317static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt) 318{ 319 struct ath10k *ar = htt->ar; 320 int idx; 321 struct sk_buff *msdu; 322 323 lockdep_assert_held(&htt->rx_ring.lock); 324 325 if (htt->rx_ring.fill_cnt == 0) { 326 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n"); 327 return NULL; 328 } 329 330 idx = htt->rx_ring.sw_rd_idx.msdu_payld; 331 msdu = htt->rx_ring.netbufs_ring[idx]; 332 htt->rx_ring.netbufs_ring[idx] = NULL; 333 ath10k_htt_reset_paddrs_ring(htt, idx); 334 335 idx++; 336 idx &= htt->rx_ring.size_mask; 337 htt->rx_ring.sw_rd_idx.msdu_payld = idx; 338 htt->rx_ring.fill_cnt--; 339 340 dma_unmap_single(htt->ar->dev, 341 ATH10K_SKB_RXCB(msdu)->paddr, 342 msdu->len + skb_tailroom(msdu), 343 DMA_FROM_DEVICE); 344 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 345 msdu->data, msdu->len + skb_tailroom(msdu)); 346 347 return msdu; 348} 349 350/* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */ 351static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt, 352 struct sk_buff_head *amsdu) 353{ 354 struct ath10k *ar = htt->ar; 355 struct ath10k_hw_params *hw = &ar->hw_params; 356 int msdu_len, msdu_chaining = 0; 357 struct sk_buff *msdu; 358 struct htt_rx_desc *rx_desc; 359 struct rx_attention *rx_desc_attention; 360 struct rx_frag_info_common *rx_desc_frag_info_common; 361 struct rx_msdu_start_common *rx_desc_msdu_start_common; 362 struct rx_msdu_end_common *rx_desc_msdu_end_common; 363 364 lockdep_assert_held(&htt->rx_ring.lock); 365 366 for (;;) { 367 int last_msdu, msdu_len_invalid, msdu_chained; 368 369 msdu = ath10k_htt_rx_netbuf_pop(htt); 370 if (!msdu) { 371 __skb_queue_purge(amsdu); 372 return -ENOENT; 373 } 374 375 __skb_queue_tail(amsdu, msdu); 376 377 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 378 rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc); 379 rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, 380 rx_desc); 381 rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc); 382 rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc); 383 384 /* FIXME: we must report msdu payload since this is what caller 385 * expects now 386 */ 387 skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 388 skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset); 389 390 /* 391 * Sanity check - confirm the HW is finished filling in the 392 * rx data. 393 * If the HW and SW are working correctly, then it's guaranteed 394 * that the HW's MAC DMA is done before this point in the SW. 395 * To prevent the case that we handle a stale Rx descriptor, 396 * just assert for now until we have a way to recover. 397 */ 398 if (!(__le32_to_cpu(rx_desc_attention->flags) 399 & RX_ATTENTION_FLAGS_MSDU_DONE)) { 400 __skb_queue_purge(amsdu); 401 return -EIO; 402 } 403 404 msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags) 405 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR | 406 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR)); 407 msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0), 408 RX_MSDU_START_INFO0_MSDU_LENGTH); 409 msdu_chained = rx_desc_frag_info_common->ring2_more_count; 410 411 if (msdu_len_invalid) 412 msdu_len = 0; 413 414 skb_trim(msdu, 0); 415 skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw))); 416 msdu_len -= msdu->len; 417 418 /* Note: Chained buffers do not contain rx descriptor */ 419 while (msdu_chained--) { 420 msdu = ath10k_htt_rx_netbuf_pop(htt); 421 if (!msdu) { 422 __skb_queue_purge(amsdu); 423 return -ENOENT; 424 } 425 426 __skb_queue_tail(amsdu, msdu); 427 skb_trim(msdu, 0); 428 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE)); 429 msdu_len -= msdu->len; 430 msdu_chaining = 1; 431 } 432 433 last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) & 434 RX_MSDU_END_INFO0_LAST_MSDU; 435 436 /* FIXME: why are we skipping the first part of the rx_desc? */ 437 trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32), 438 hw->rx_desc_ops->rx_desc_size - sizeof(u32)); 439 440 if (last_msdu) 441 break; 442 } 443 444 if (skb_queue_empty(amsdu)) 445 msdu_chaining = -1; 446 447 /* 448 * Don't refill the ring yet. 449 * 450 * First, the elements popped here are still in use - it is not 451 * safe to overwrite them until the matching call to 452 * mpdu_desc_list_next. Second, for efficiency it is preferable to 453 * refill the rx ring with 1 PPDU's worth of rx buffers (something 454 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers 455 * (something like 3 buffers). Consequently, we'll rely on the txrx 456 * SW to tell us when it is done pulling all the PPDU's rx buffers 457 * out of the rx ring, and then refill it just once. 458 */ 459 460 return msdu_chaining; 461} 462 463static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt, 464 u64 paddr) 465{ 466 struct ath10k *ar = htt->ar; 467 struct ath10k_skb_rxcb *rxcb; 468 struct sk_buff *msdu; 469 470 lockdep_assert_held(&htt->rx_ring.lock); 471 472 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr); 473 if (!msdu) 474 return NULL; 475 476 rxcb = ATH10K_SKB_RXCB(msdu); 477 hash_del(&rxcb->hlist); 478 htt->rx_ring.fill_cnt--; 479 480 dma_unmap_single(htt->ar->dev, rxcb->paddr, 481 msdu->len + skb_tailroom(msdu), 482 DMA_FROM_DEVICE); 483 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 484 msdu->data, msdu->len + skb_tailroom(msdu)); 485 486 return msdu; 487} 488 489static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head, 490 struct sk_buff *frag_list, 491 unsigned int frag_len) 492{ 493 skb_shinfo(skb_head)->frag_list = frag_list; 494 skb_head->data_len = frag_len; 495 skb_head->len += skb_head->data_len; 496} 497 498static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt, 499 struct sk_buff *msdu, 500 struct htt_rx_in_ord_msdu_desc **msdu_desc) 501{ 502 struct ath10k *ar = htt->ar; 503 struct ath10k_hw_params *hw = &ar->hw_params; 504 u32 paddr; 505 struct sk_buff *frag_buf; 506 struct sk_buff *prev_frag_buf; 507 u8 last_frag; 508 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc; 509 struct htt_rx_desc *rxd; 510 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 511 512 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 513 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 514 515 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 516 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 517 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 518 amsdu_len -= msdu->len; 519 520 last_frag = ind_desc->reserved; 521 if (last_frag) { 522 if (amsdu_len) { 523 ath10k_warn(ar, "invalid amsdu len %u, left %d", 524 __le16_to_cpu(ind_desc->msdu_len), 525 amsdu_len); 526 } 527 return 0; 528 } 529 530 ind_desc++; 531 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 532 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 533 if (!frag_buf) { 534 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr); 535 return -ENOENT; 536 } 537 538 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 539 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 540 541 amsdu_len -= frag_buf->len; 542 prev_frag_buf = frag_buf; 543 last_frag = ind_desc->reserved; 544 while (!last_frag) { 545 ind_desc++; 546 paddr = __le32_to_cpu(ind_desc->msdu_paddr); 547 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 548 if (!frag_buf) { 549 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x", 550 paddr); 551 prev_frag_buf->next = NULL; 552 return -ENOENT; 553 } 554 555 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 556 last_frag = ind_desc->reserved; 557 amsdu_len -= frag_buf->len; 558 559 prev_frag_buf->next = frag_buf; 560 prev_frag_buf = frag_buf; 561 } 562 563 if (amsdu_len) { 564 ath10k_warn(ar, "invalid amsdu len %u, left %d", 565 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 566 } 567 568 *msdu_desc = ind_desc; 569 570 prev_frag_buf->next = NULL; 571 return 0; 572} 573 574static int 575ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt, 576 struct sk_buff *msdu, 577 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc) 578{ 579 struct ath10k *ar = htt->ar; 580 struct ath10k_hw_params *hw = &ar->hw_params; 581 u64 paddr; 582 struct sk_buff *frag_buf; 583 struct sk_buff *prev_frag_buf; 584 u8 last_frag; 585 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc; 586 struct htt_rx_desc *rxd; 587 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); 588 589 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 590 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 591 592 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 593 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 594 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw))); 595 amsdu_len -= msdu->len; 596 597 last_frag = ind_desc->reserved; 598 if (last_frag) { 599 if (amsdu_len) { 600 ath10k_warn(ar, "invalid amsdu len %u, left %d", 601 __le16_to_cpu(ind_desc->msdu_len), 602 amsdu_len); 603 } 604 return 0; 605 } 606 607 ind_desc++; 608 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 609 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 610 if (!frag_buf) { 611 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr); 612 return -ENOENT; 613 } 614 615 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 616 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); 617 618 amsdu_len -= frag_buf->len; 619 prev_frag_buf = frag_buf; 620 last_frag = ind_desc->reserved; 621 while (!last_frag) { 622 ind_desc++; 623 paddr = __le64_to_cpu(ind_desc->msdu_paddr); 624 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); 625 if (!frag_buf) { 626 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx", 627 paddr); 628 prev_frag_buf->next = NULL; 629 return -ENOENT; 630 } 631 632 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); 633 last_frag = ind_desc->reserved; 634 amsdu_len -= frag_buf->len; 635 636 prev_frag_buf->next = frag_buf; 637 prev_frag_buf = frag_buf; 638 } 639 640 if (amsdu_len) { 641 ath10k_warn(ar, "invalid amsdu len %u, left %d", 642 __le16_to_cpu(ind_desc->msdu_len), amsdu_len); 643 } 644 645 *msdu_desc = ind_desc; 646 647 prev_frag_buf->next = NULL; 648 return 0; 649} 650 651static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt, 652 struct htt_rx_in_ord_ind *ev, 653 struct sk_buff_head *list) 654{ 655 struct ath10k *ar = htt->ar; 656 struct ath10k_hw_params *hw = &ar->hw_params; 657 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32; 658 struct htt_rx_desc *rxd; 659 struct rx_attention *rxd_attention; 660 struct sk_buff *msdu; 661 int msdu_count, ret; 662 bool is_offload; 663 u32 paddr; 664 665 lockdep_assert_held(&htt->rx_ring.lock); 666 667 msdu_count = __le16_to_cpu(ev->msdu_count); 668 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 669 670 while (msdu_count--) { 671 paddr = __le32_to_cpu(msdu_desc->msdu_paddr); 672 673 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 674 if (!msdu) { 675 __skb_queue_purge(list); 676 return -ENOENT; 677 } 678 679 if (!is_offload && ar->monitor_arvif) { 680 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu, 681 &msdu_desc); 682 if (ret) { 683 __skb_queue_purge(list); 684 return ret; 685 } 686 __skb_queue_tail(list, msdu); 687 msdu_desc++; 688 continue; 689 } 690 691 __skb_queue_tail(list, msdu); 692 693 if (!is_offload) { 694 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 695 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 696 697 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 698 699 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 700 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 701 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 702 703 if (!(__le32_to_cpu(rxd_attention->flags) & 704 RX_ATTENTION_FLAGS_MSDU_DONE)) { 705 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 706 return -EIO; 707 } 708 } 709 710 msdu_desc++; 711 } 712 713 return 0; 714} 715 716static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt, 717 struct htt_rx_in_ord_ind *ev, 718 struct sk_buff_head *list) 719{ 720 struct ath10k *ar = htt->ar; 721 struct ath10k_hw_params *hw = &ar->hw_params; 722 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64; 723 struct htt_rx_desc *rxd; 724 struct rx_attention *rxd_attention; 725 struct sk_buff *msdu; 726 int msdu_count, ret; 727 bool is_offload; 728 u64 paddr; 729 730 lockdep_assert_held(&htt->rx_ring.lock); 731 732 msdu_count = __le16_to_cpu(ev->msdu_count); 733 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 734 735 while (msdu_count--) { 736 paddr = __le64_to_cpu(msdu_desc->msdu_paddr); 737 msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 738 if (!msdu) { 739 __skb_queue_purge(list); 740 return -ENOENT; 741 } 742 743 if (!is_offload && ar->monitor_arvif) { 744 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu, 745 &msdu_desc); 746 if (ret) { 747 __skb_queue_purge(list); 748 return ret; 749 } 750 __skb_queue_tail(list, msdu); 751 msdu_desc++; 752 continue; 753 } 754 755 __skb_queue_tail(list, msdu); 756 757 if (!is_offload) { 758 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data); 759 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 760 761 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size); 762 763 skb_put(msdu, hw->rx_desc_ops->rx_desc_size); 764 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size); 765 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 766 767 if (!(__le32_to_cpu(rxd_attention->flags) & 768 RX_ATTENTION_FLAGS_MSDU_DONE)) { 769 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 770 return -EIO; 771 } 772 } 773 774 msdu_desc++; 775 } 776 777 return 0; 778} 779 780int ath10k_htt_rx_alloc(struct ath10k_htt *htt) 781{ 782 struct ath10k *ar = htt->ar; 783 dma_addr_t paddr; 784 void *vaddr, *vaddr_ring; 785 size_t size; 786 struct timer_list *timer = &htt->rx_ring.refill_retry_timer; 787 788 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 789 return 0; 790 791 htt->rx_confused = false; 792 793 /* XXX: The fill level could be changed during runtime in response to 794 * the host processing latency. Is this really worth it? 795 */ 796 htt->rx_ring.size = HTT_RX_RING_SIZE; 797 htt->rx_ring.size_mask = htt->rx_ring.size - 1; 798 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level; 799 800 if (!is_power_of_2(htt->rx_ring.size)) { 801 ath10k_warn(ar, "htt rx ring size is not power of 2\n"); 802 return -EINVAL; 803 } 804 805 htt->rx_ring.netbufs_ring = 806 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *), 807 GFP_KERNEL); 808 if (!htt->rx_ring.netbufs_ring) 809 goto err_netbuf; 810 811 size = ath10k_htt_get_rx_ring_size(htt); 812 813 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL); 814 if (!vaddr_ring) 815 goto err_dma_ring; 816 817 ath10k_htt_config_paddrs_ring(htt, vaddr_ring); 818 htt->rx_ring.base_paddr = paddr; 819 820 vaddr = dma_alloc_coherent(htt->ar->dev, 821 sizeof(*htt->rx_ring.alloc_idx.vaddr), 822 &paddr, GFP_KERNEL); 823 if (!vaddr) 824 goto err_dma_idx; 825 826 htt->rx_ring.alloc_idx.vaddr = vaddr; 827 htt->rx_ring.alloc_idx.paddr = paddr; 828 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask; 829 *htt->rx_ring.alloc_idx.vaddr = 0; 830 831 /* Initialize the Rx refill retry timer */ 832 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0); 833 834 spin_lock_init(&htt->rx_ring.lock); 835 836 htt->rx_ring.fill_cnt = 0; 837 htt->rx_ring.sw_rd_idx.msdu_payld = 0; 838 hash_init(htt->rx_ring.skb_table); 839 840 skb_queue_head_init(&htt->rx_msdus_q); 841 skb_queue_head_init(&htt->rx_in_ord_compl_q); 842 skb_queue_head_init(&htt->tx_fetch_ind_q); 843 atomic_set(&htt->num_mpdus_ready, 0); 844 845 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n", 846 htt->rx_ring.size, htt->rx_ring.fill_level); 847 return 0; 848 849err_dma_idx: 850 dma_free_coherent(htt->ar->dev, 851 ath10k_htt_get_rx_ring_size(htt), 852 vaddr_ring, 853 htt->rx_ring.base_paddr); 854 ath10k_htt_config_paddrs_ring(htt, NULL); 855err_dma_ring: 856 kfree(htt->rx_ring.netbufs_ring); 857 htt->rx_ring.netbufs_ring = NULL; 858err_netbuf: 859 return -ENOMEM; 860} 861 862static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar, 863 enum htt_rx_mpdu_encrypt_type type) 864{ 865 switch (type) { 866 case HTT_RX_MPDU_ENCRYPT_NONE: 867 return 0; 868 case HTT_RX_MPDU_ENCRYPT_WEP40: 869 case HTT_RX_MPDU_ENCRYPT_WEP104: 870 return IEEE80211_WEP_IV_LEN; 871 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 872 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 873 return IEEE80211_TKIP_IV_LEN; 874 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 875 return IEEE80211_CCMP_HDR_LEN; 876 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 877 return IEEE80211_CCMP_256_HDR_LEN; 878 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 879 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 880 return IEEE80211_GCMP_HDR_LEN; 881 case HTT_RX_MPDU_ENCRYPT_WEP128: 882 case HTT_RX_MPDU_ENCRYPT_WAPI: 883 break; 884 } 885 886 ath10k_warn(ar, "unsupported encryption type %d\n", type); 887 return 0; 888} 889 890#define MICHAEL_MIC_LEN 8 891 892static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar, 893 enum htt_rx_mpdu_encrypt_type type) 894{ 895 switch (type) { 896 case HTT_RX_MPDU_ENCRYPT_NONE: 897 case HTT_RX_MPDU_ENCRYPT_WEP40: 898 case HTT_RX_MPDU_ENCRYPT_WEP104: 899 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 900 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 901 return 0; 902 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 903 return IEEE80211_CCMP_MIC_LEN; 904 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 905 return IEEE80211_CCMP_256_MIC_LEN; 906 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 907 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 908 return IEEE80211_GCMP_MIC_LEN; 909 case HTT_RX_MPDU_ENCRYPT_WEP128: 910 case HTT_RX_MPDU_ENCRYPT_WAPI: 911 break; 912 } 913 914 ath10k_warn(ar, "unsupported encryption type %d\n", type); 915 return 0; 916} 917 918static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar, 919 enum htt_rx_mpdu_encrypt_type type) 920{ 921 switch (type) { 922 case HTT_RX_MPDU_ENCRYPT_NONE: 923 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 924 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: 925 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: 926 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: 927 return 0; 928 case HTT_RX_MPDU_ENCRYPT_WEP40: 929 case HTT_RX_MPDU_ENCRYPT_WEP104: 930 return IEEE80211_WEP_ICV_LEN; 931 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 932 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 933 return IEEE80211_TKIP_ICV_LEN; 934 case HTT_RX_MPDU_ENCRYPT_WEP128: 935 case HTT_RX_MPDU_ENCRYPT_WAPI: 936 break; 937 } 938 939 ath10k_warn(ar, "unsupported encryption type %d\n", type); 940 return 0; 941} 942 943struct amsdu_subframe_hdr { 944 u8 dst[ETH_ALEN]; 945 u8 src[ETH_ALEN]; 946 __be16 len; 947} __packed; 948 949#define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63) 950 951static inline u8 ath10k_bw_to_mac80211_bw(u8 bw) 952{ 953 u8 ret = 0; 954 955 switch (bw) { 956 case 0: 957 ret = RATE_INFO_BW_20; 958 break; 959 case 1: 960 ret = RATE_INFO_BW_40; 961 break; 962 case 2: 963 ret = RATE_INFO_BW_80; 964 break; 965 case 3: 966 ret = RATE_INFO_BW_160; 967 break; 968 } 969 970 return ret; 971} 972 973static void ath10k_htt_rx_h_rates(struct ath10k *ar, 974 struct ieee80211_rx_status *status, 975 struct htt_rx_desc *rxd) 976{ 977 struct ath10k_hw_params *hw = &ar->hw_params; 978 struct rx_attention *rxd_attention; 979 struct rx_mpdu_start *rxd_mpdu_start; 980 struct rx_mpdu_end *rxd_mpdu_end; 981 struct rx_msdu_start_common *rxd_msdu_start_common; 982 struct rx_msdu_end_common *rxd_msdu_end_common; 983 struct rx_ppdu_start *rxd_ppdu_start; 984 struct ieee80211_supported_band *sband; 985 u8 cck, rate, bw, sgi, mcs, nss; 986 u8 *rxd_msdu_payload; 987 u8 preamble = 0; 988 u8 group_id; 989 u32 info1, info2, info3; 990 u32 stbc, nsts_su; 991 992 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 993 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 994 rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd); 995 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 996 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 997 rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 998 rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd); 999 1000 info1 = __le32_to_cpu(rxd_ppdu_start->info1); 1001 info2 = __le32_to_cpu(rxd_ppdu_start->info2); 1002 info3 = __le32_to_cpu(rxd_ppdu_start->info3); 1003 1004 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE); 1005 1006 switch (preamble) { 1007 case HTT_RX_LEGACY: 1008 /* To get legacy rate index band is required. Since band can't 1009 * be undefined check if freq is non-zero. 1010 */ 1011 if (!status->freq) 1012 return; 1013 1014 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT; 1015 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE); 1016 rate &= ~RX_PPDU_START_RATE_FLAG; 1017 1018 sband = &ar->mac.sbands[status->band]; 1019 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck); 1020 break; 1021 case HTT_RX_HT: 1022 case HTT_RX_HT_WITH_TXBF: 1023 /* HT-SIG - Table 20-11 in info2 and info3 */ 1024 mcs = info2 & 0x1F; 1025 nss = mcs >> 3; 1026 bw = (info2 >> 7) & 1; 1027 sgi = (info3 >> 7) & 1; 1028 1029 status->rate_idx = mcs; 1030 status->encoding = RX_ENC_HT; 1031 if (sgi) 1032 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1033 if (bw) 1034 status->bw = RATE_INFO_BW_40; 1035 break; 1036 case HTT_RX_VHT: 1037 case HTT_RX_VHT_WITH_TXBF: 1038 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3 1039 * TODO check this 1040 */ 1041 bw = info2 & 3; 1042 sgi = info3 & 1; 1043 stbc = (info2 >> 3) & 1; 1044 group_id = (info2 >> 4) & 0x3F; 1045 1046 if (GROUP_ID_IS_SU_MIMO(group_id)) { 1047 mcs = (info3 >> 4) & 0x0F; 1048 nsts_su = ((info2 >> 10) & 0x07); 1049 if (stbc) 1050 nss = (nsts_su >> 2) + 1; 1051 else 1052 nss = (nsts_su + 1); 1053 } else { 1054 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor 1055 * so it's impossible to decode MCS. Also since 1056 * firmware consumes Group Id Management frames host 1057 * has no knowledge regarding group/user position 1058 * mapping so it's impossible to pick the correct Nsts 1059 * from VHT-SIG-A1. 1060 * 1061 * Bandwidth and SGI are valid so report the rateinfo 1062 * on best-effort basis. 1063 */ 1064 mcs = 0; 1065 nss = 1; 1066 } 1067 1068 if (mcs > 0x09) { 1069 ath10k_warn(ar, "invalid MCS received %u\n", mcs); 1070 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n", 1071 __le32_to_cpu(rxd_attention->flags), 1072 __le32_to_cpu(rxd_mpdu_start->info0), 1073 __le32_to_cpu(rxd_mpdu_start->info1), 1074 __le32_to_cpu(rxd_msdu_start_common->info0), 1075 __le32_to_cpu(rxd_msdu_start_common->info1), 1076 rxd_ppdu_start->info0, 1077 __le32_to_cpu(rxd_ppdu_start->info1), 1078 __le32_to_cpu(rxd_ppdu_start->info2), 1079 __le32_to_cpu(rxd_ppdu_start->info3), 1080 __le32_to_cpu(rxd_ppdu_start->info4)); 1081 1082 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n", 1083 __le32_to_cpu(rxd_msdu_end_common->info0), 1084 __le32_to_cpu(rxd_mpdu_end->info0)); 1085 1086 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, 1087 "rx desc msdu payload: ", 1088 rxd_msdu_payload, 50); 1089 } 1090 1091 status->rate_idx = mcs; 1092 status->nss = nss; 1093 1094 if (sgi) 1095 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1096 1097 status->bw = ath10k_bw_to_mac80211_bw(bw); 1098 status->encoding = RX_ENC_VHT; 1099 break; 1100 default: 1101 break; 1102 } 1103} 1104 1105static struct ieee80211_channel * 1106ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) 1107{ 1108 struct ath10k_hw_params *hw = &ar->hw_params; 1109 struct rx_attention *rxd_attention; 1110 struct rx_msdu_end_common *rxd_msdu_end_common; 1111 struct rx_mpdu_start *rxd_mpdu_start; 1112 struct ath10k_peer *peer; 1113 struct ath10k_vif *arvif; 1114 struct cfg80211_chan_def def; 1115 u16 peer_id; 1116 1117 lockdep_assert_held(&ar->data_lock); 1118 1119 if (!rxd) 1120 return NULL; 1121 1122 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1123 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1124 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1125 1126 if (rxd_attention->flags & 1127 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) 1128 return NULL; 1129 1130 if (!(rxd_msdu_end_common->info0 & 1131 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) 1132 return NULL; 1133 1134 peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1135 RX_MPDU_START_INFO0_PEER_IDX); 1136 1137 peer = ath10k_peer_find_by_id(ar, peer_id); 1138 if (!peer) 1139 return NULL; 1140 1141 arvif = ath10k_get_arvif(ar, peer->vdev_id); 1142 if (WARN_ON_ONCE(!arvif)) 1143 return NULL; 1144 1145 if (ath10k_mac_vif_chan(arvif->vif, &def)) 1146 return NULL; 1147 1148 return def.chan; 1149} 1150 1151static struct ieee80211_channel * 1152ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) 1153{ 1154 struct ath10k_vif *arvif; 1155 struct cfg80211_chan_def def; 1156 1157 lockdep_assert_held(&ar->data_lock); 1158 1159 list_for_each_entry(arvif, &ar->arvifs, list) { 1160 if (arvif->vdev_id == vdev_id && 1161 ath10k_mac_vif_chan(arvif->vif, &def) == 0) 1162 return def.chan; 1163 } 1164 1165 return NULL; 1166} 1167 1168static void 1169ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, 1170 struct ieee80211_chanctx_conf *conf, 1171 void *data) 1172{ 1173 struct cfg80211_chan_def *def = data; 1174 1175 *def = conf->def; 1176} 1177 1178static struct ieee80211_channel * 1179ath10k_htt_rx_h_any_channel(struct ath10k *ar) 1180{ 1181 struct cfg80211_chan_def def = {}; 1182 1183 ieee80211_iter_chan_contexts_atomic(ar->hw, 1184 ath10k_htt_rx_h_any_chan_iter, 1185 &def); 1186 1187 return def.chan; 1188} 1189 1190static bool ath10k_htt_rx_h_channel(struct ath10k *ar, 1191 struct ieee80211_rx_status *status, 1192 struct htt_rx_desc *rxd, 1193 u32 vdev_id) 1194{ 1195 struct ieee80211_channel *ch; 1196 1197 spin_lock_bh(&ar->data_lock); 1198 ch = ar->scan_channel; 1199 if (!ch) 1200 ch = ar->rx_channel; 1201 if (!ch) 1202 ch = ath10k_htt_rx_h_peer_channel(ar, rxd); 1203 if (!ch) 1204 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); 1205 if (!ch) 1206 ch = ath10k_htt_rx_h_any_channel(ar); 1207 if (!ch) 1208 ch = ar->tgt_oper_chan; 1209 spin_unlock_bh(&ar->data_lock); 1210 1211 if (!ch) 1212 return false; 1213 1214 status->band = ch->band; 1215 status->freq = ch->center_freq; 1216 1217 return true; 1218} 1219 1220static void ath10k_htt_rx_h_signal(struct ath10k *ar, 1221 struct ieee80211_rx_status *status, 1222 struct htt_rx_desc *rxd) 1223{ 1224 struct ath10k_hw_params *hw = &ar->hw_params; 1225 struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd); 1226 int i; 1227 1228 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) { 1229 status->chains &= ~BIT(i); 1230 1231 if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) { 1232 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR + 1233 rxd_ppdu_start->rssi_chains[i].pri20_mhz; 1234 1235 status->chains |= BIT(i); 1236 } 1237 } 1238 1239 /* FIXME: Get real NF */ 1240 status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 1241 rxd_ppdu_start->rssi_comb; 1242 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 1243} 1244 1245static void ath10k_htt_rx_h_mactime(struct ath10k *ar, 1246 struct ieee80211_rx_status *status, 1247 struct htt_rx_desc *rxd) 1248{ 1249 struct ath10k_hw_params *hw = &ar->hw_params; 1250 struct rx_ppdu_end_common *rxd_ppdu_end_common; 1251 1252 rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd); 1253 1254 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This 1255 * means all prior MSDUs in a PPDU are reported to mac80211 without the 1256 * TSF. Is it worth holding frames until end of PPDU is known? 1257 * 1258 * FIXME: Can we get/compute 64bit TSF? 1259 */ 1260 status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp); 1261 status->flag |= RX_FLAG_MACTIME_END; 1262} 1263 1264static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, 1265 struct sk_buff_head *amsdu, 1266 struct ieee80211_rx_status *status, 1267 u32 vdev_id) 1268{ 1269 struct sk_buff *first; 1270 struct ath10k_hw_params *hw = &ar->hw_params; 1271 struct htt_rx_desc *rxd; 1272 struct rx_attention *rxd_attention; 1273 bool is_first_ppdu; 1274 bool is_last_ppdu; 1275 1276 if (skb_queue_empty(amsdu)) 1277 return; 1278 1279 first = skb_peek(amsdu); 1280 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1281 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1282 1283 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1284 1285 is_first_ppdu = !!(rxd_attention->flags & 1286 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU)); 1287 is_last_ppdu = !!(rxd_attention->flags & 1288 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU)); 1289 1290 if (is_first_ppdu) { 1291 /* New PPDU starts so clear out the old per-PPDU status. */ 1292 status->freq = 0; 1293 status->rate_idx = 0; 1294 status->nss = 0; 1295 status->encoding = RX_ENC_LEGACY; 1296 status->bw = RATE_INFO_BW_20; 1297 1298 status->flag &= ~RX_FLAG_MACTIME; 1299 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 1300 1301 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST); 1302 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; 1303 status->ampdu_reference = ar->ampdu_reference; 1304 1305 ath10k_htt_rx_h_signal(ar, status, rxd); 1306 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); 1307 ath10k_htt_rx_h_rates(ar, status, rxd); 1308 } 1309 1310 if (is_last_ppdu) { 1311 ath10k_htt_rx_h_mactime(ar, status, rxd); 1312 1313 /* set ampdu last segment flag */ 1314 status->flag |= RX_FLAG_AMPDU_IS_LAST; 1315 ar->ampdu_reference++; 1316 } 1317} 1318 1319static const char * const tid_to_ac[] = { 1320 "BE", 1321 "BK", 1322 "BK", 1323 "BE", 1324 "VI", 1325 "VI", 1326 "VO", 1327 "VO", 1328}; 1329 1330static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) 1331{ 1332 u8 *qc; 1333 int tid; 1334 1335 if (!ieee80211_is_data_qos(hdr->frame_control)) 1336 return ""; 1337 1338 qc = ieee80211_get_qos_ctl(hdr); 1339 tid = *qc & IEEE80211_QOS_CTL_TID_MASK; 1340 if (tid < 8) 1341 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]); 1342 else 1343 snprintf(out, size, "tid %d", tid); 1344 1345 return out; 1346} 1347 1348static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar, 1349 struct ieee80211_rx_status *rx_status, 1350 struct sk_buff *skb) 1351{ 1352 struct ieee80211_rx_status *status; 1353 1354 status = IEEE80211_SKB_RXCB(skb); 1355 *status = *rx_status; 1356 1357 skb_queue_tail(&ar->htt.rx_msdus_q, skb); 1358} 1359 1360static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb) 1361{ 1362 struct ieee80211_rx_status *status; 1363 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 1364 char tid[32]; 1365 1366 status = IEEE80211_SKB_RXCB(skb); 1367 1368 if (!(ar->filter_flags & FIF_FCSFAIL) && 1369 status->flag & RX_FLAG_FAILED_FCS_CRC) { 1370 ar->stats.rx_crc_err_drop++; 1371 dev_kfree_skb_any(skb); 1372 return; 1373 } 1374 1375 ath10k_dbg(ar, ATH10K_DBG_DATA, 1376 "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", 1377 skb, 1378 skb->len, 1379 ieee80211_get_SA(hdr), 1380 ath10k_get_tid(hdr, tid, sizeof(tid)), 1381 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ? 1382 "mcast" : "ucast", 1383 IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)), 1384 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "", 1385 (status->encoding == RX_ENC_HT) ? "ht" : "", 1386 (status->encoding == RX_ENC_VHT) ? "vht" : "", 1387 (status->bw == RATE_INFO_BW_40) ? "40" : "", 1388 (status->bw == RATE_INFO_BW_80) ? "80" : "", 1389 (status->bw == RATE_INFO_BW_160) ? "160" : "", 1390 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "", 1391 status->rate_idx, 1392 status->nss, 1393 status->freq, 1394 status->band, status->flag, 1395 !!(status->flag & RX_FLAG_FAILED_FCS_CRC), 1396 !!(status->flag & RX_FLAG_MMIC_ERROR), 1397 !!(status->flag & RX_FLAG_AMSDU_MORE)); 1398 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ", 1399 skb->data, skb->len); 1400 trace_ath10k_rx_hdr(ar, skb->data, skb->len); 1401 trace_ath10k_rx_payload(ar, skb->data, skb->len); 1402 1403 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 1404} 1405 1406static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar, 1407 struct ieee80211_hdr *hdr) 1408{ 1409 int len = ieee80211_hdrlen(hdr->frame_control); 1410 1411 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING, 1412 ar->running_fw->fw_file.fw_features)) 1413 len = round_up(len, 4); 1414 1415 return len; 1416} 1417 1418static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, 1419 struct sk_buff *msdu, 1420 struct ieee80211_rx_status *status, 1421 enum htt_rx_mpdu_encrypt_type enctype, 1422 bool is_decrypted, 1423 const u8 first_hdr[64]) 1424{ 1425 struct ieee80211_hdr *hdr; 1426 struct ath10k_hw_params *hw = &ar->hw_params; 1427 struct htt_rx_desc *rxd; 1428 struct rx_msdu_end_common *rxd_msdu_end_common; 1429 size_t hdr_len; 1430 size_t crypto_len; 1431 bool is_first; 1432 bool is_last; 1433 bool msdu_limit_err; 1434 int bytes_aligned = ar->hw_params.decap_align_bytes; 1435 u8 *qos; 1436 1437 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1438 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1439 1440 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1441 is_first = !!(rxd_msdu_end_common->info0 & 1442 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1443 is_last = !!(rxd_msdu_end_common->info0 & 1444 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1445 1446 /* Delivered decapped frame: 1447 * [802.11 header] 1448 * [crypto param] <-- can be trimmed if !fcs_err && 1449 * !decrypt_err && !peer_idx_invalid 1450 * [amsdu header] <-- only if A-MSDU 1451 * [rfc1042/llc] 1452 * [payload] 1453 * [FCS] <-- at end, needs to be trimmed 1454 */ 1455 1456 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when 1457 * deaggregate, so that unwanted MSDU-deaggregation is avoided for 1458 * error packets. If limit exceeds, hw sends all remaining MSDUs as 1459 * a single last MSDU with this msdu limit error set. 1460 */ 1461 msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd); 1462 1463 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU 1464 * without first MSDU is expected in that case, and handled later here. 1465 */ 1466 /* This probably shouldn't happen but warn just in case */ 1467 if (WARN_ON_ONCE(!is_first && !msdu_limit_err)) 1468 return; 1469 1470 /* This probably shouldn't happen but warn just in case */ 1471 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err)) 1472 return; 1473 1474 skb_trim(msdu, msdu->len - FCS_LEN); 1475 1476 /* Push original 80211 header */ 1477 if (unlikely(msdu_limit_err)) { 1478 hdr = (struct ieee80211_hdr *)first_hdr; 1479 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1480 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1481 1482 if (ieee80211_is_data_qos(hdr->frame_control)) { 1483 qos = ieee80211_get_qos_ctl(hdr); 1484 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1485 } 1486 1487 if (crypto_len) 1488 memcpy(skb_push(msdu, crypto_len), 1489 (void *)hdr + round_up(hdr_len, bytes_aligned), 1490 crypto_len); 1491 1492 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1493 } 1494 1495 /* In most cases this will be true for sniffed frames. It makes sense 1496 * to deliver them as-is without stripping the crypto param. This is 1497 * necessary for software based decryption. 1498 * 1499 * If there's no error then the frame is decrypted. At least that is 1500 * the case for frames that come in via fragmented rx indication. 1501 */ 1502 if (!is_decrypted) 1503 return; 1504 1505 /* The payload is decrypted so strip crypto params. Start from tail 1506 * since hdr is used to compute some stuff. 1507 */ 1508 1509 hdr = (void *)msdu->data; 1510 1511 /* Tail */ 1512 if (status->flag & RX_FLAG_IV_STRIPPED) { 1513 skb_trim(msdu, msdu->len - 1514 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1515 1516 skb_trim(msdu, msdu->len - 1517 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1518 } else { 1519 /* MIC */ 1520 if (status->flag & RX_FLAG_MIC_STRIPPED) 1521 skb_trim(msdu, msdu->len - 1522 ath10k_htt_rx_crypto_mic_len(ar, enctype)); 1523 1524 /* ICV */ 1525 if (status->flag & RX_FLAG_ICV_STRIPPED) 1526 skb_trim(msdu, msdu->len - 1527 ath10k_htt_rx_crypto_icv_len(ar, enctype)); 1528 } 1529 1530 /* MMIC */ 1531 if ((status->flag & RX_FLAG_MMIC_STRIPPED) && 1532 !ieee80211_has_morefrags(hdr->frame_control) && 1533 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 1534 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN); 1535 1536 /* Head */ 1537 if (status->flag & RX_FLAG_IV_STRIPPED) { 1538 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1539 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1540 1541 memmove((void *)msdu->data + crypto_len, 1542 (void *)msdu->data, hdr_len); 1543 skb_pull(msdu, crypto_len); 1544 } 1545} 1546 1547static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar, 1548 struct sk_buff *msdu, 1549 struct ieee80211_rx_status *status, 1550 const u8 first_hdr[64], 1551 enum htt_rx_mpdu_encrypt_type enctype) 1552{ 1553 struct ath10k_hw_params *hw = &ar->hw_params; 1554 struct ieee80211_hdr *hdr; 1555 struct htt_rx_desc *rxd; 1556 size_t hdr_len; 1557 u8 da[ETH_ALEN]; 1558 u8 sa[ETH_ALEN]; 1559 int l3_pad_bytes; 1560 int bytes_aligned = ar->hw_params.decap_align_bytes; 1561 1562 /* Delivered decapped frame: 1563 * [nwifi 802.11 header] <-- replaced with 802.11 hdr 1564 * [rfc1042/llc] 1565 * 1566 * Note: The nwifi header doesn't have QoS Control and is 1567 * (always?) a 3addr frame. 1568 * 1569 * Note2: There's no A-MSDU subframe header. Even if it's part 1570 * of an A-MSDU. 1571 */ 1572 1573 /* pull decapped header and copy SA & DA */ 1574 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data - 1575 hw->rx_desc_ops->rx_desc_size); 1576 1577 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1578 skb_put(msdu, l3_pad_bytes); 1579 1580 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes); 1581 1582 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr); 1583 ether_addr_copy(da, ieee80211_get_DA(hdr)); 1584 ether_addr_copy(sa, ieee80211_get_SA(hdr)); 1585 skb_pull(msdu, hdr_len); 1586 1587 /* push original 802.11 header */ 1588 hdr = (struct ieee80211_hdr *)first_hdr; 1589 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1590 1591 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1592 memcpy(skb_push(msdu, 1593 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1594 (void *)hdr + round_up(hdr_len, bytes_aligned), 1595 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1596 } 1597 1598 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1599 1600 /* original 802.11 header has a different DA and in 1601 * case of 4addr it may also have different SA 1602 */ 1603 hdr = (struct ieee80211_hdr *)msdu->data; 1604 ether_addr_copy(ieee80211_get_DA(hdr), da); 1605 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1606} 1607 1608static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar, 1609 struct sk_buff *msdu, 1610 enum htt_rx_mpdu_encrypt_type enctype) 1611{ 1612 struct ieee80211_hdr *hdr; 1613 struct ath10k_hw_params *hw = &ar->hw_params; 1614 struct htt_rx_desc *rxd; 1615 struct rx_msdu_end_common *rxd_msdu_end_common; 1616 u8 *rxd_rx_hdr_status; 1617 size_t hdr_len, crypto_len; 1618 void *rfc1042; 1619 bool is_first, is_last, is_amsdu; 1620 int bytes_aligned = ar->hw_params.decap_align_bytes; 1621 1622 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1623 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1624 1625 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 1626 rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1627 hdr = (void *)rxd_rx_hdr_status; 1628 1629 is_first = !!(rxd_msdu_end_common->info0 & 1630 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 1631 is_last = !!(rxd_msdu_end_common->info0 & 1632 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1633 is_amsdu = !(is_first && is_last); 1634 1635 rfc1042 = hdr; 1636 1637 if (is_first) { 1638 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1639 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1640 1641 rfc1042 += round_up(hdr_len, bytes_aligned) + 1642 round_up(crypto_len, bytes_aligned); 1643 } 1644 1645 if (is_amsdu) 1646 rfc1042 += sizeof(struct amsdu_subframe_hdr); 1647 1648 return rfc1042; 1649} 1650 1651static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar, 1652 struct sk_buff *msdu, 1653 struct ieee80211_rx_status *status, 1654 const u8 first_hdr[64], 1655 enum htt_rx_mpdu_encrypt_type enctype) 1656{ 1657 struct ath10k_hw_params *hw = &ar->hw_params; 1658 struct ieee80211_hdr *hdr; 1659 struct ethhdr *eth; 1660 size_t hdr_len; 1661 void *rfc1042; 1662 u8 da[ETH_ALEN]; 1663 u8 sa[ETH_ALEN]; 1664 int l3_pad_bytes; 1665 struct htt_rx_desc *rxd; 1666 int bytes_aligned = ar->hw_params.decap_align_bytes; 1667 1668 /* Delivered decapped frame: 1669 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc 1670 * [payload] 1671 */ 1672 1673 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype); 1674 if (WARN_ON_ONCE(!rfc1042)) 1675 return; 1676 1677 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1678 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1679 1680 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1681 skb_put(msdu, l3_pad_bytes); 1682 skb_pull(msdu, l3_pad_bytes); 1683 1684 /* pull decapped header and copy SA & DA */ 1685 eth = (struct ethhdr *)msdu->data; 1686 ether_addr_copy(da, eth->h_dest); 1687 ether_addr_copy(sa, eth->h_source); 1688 skb_pull(msdu, sizeof(struct ethhdr)); 1689 1690 /* push rfc1042/llc/snap */ 1691 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042, 1692 sizeof(struct rfc1042_hdr)); 1693 1694 /* push original 802.11 header */ 1695 hdr = (struct ieee80211_hdr *)first_hdr; 1696 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1697 1698 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1699 memcpy(skb_push(msdu, 1700 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1701 (void *)hdr + round_up(hdr_len, bytes_aligned), 1702 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1703 } 1704 1705 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1706 1707 /* original 802.11 header has a different DA and in 1708 * case of 4addr it may also have different SA 1709 */ 1710 hdr = (struct ieee80211_hdr *)msdu->data; 1711 ether_addr_copy(ieee80211_get_DA(hdr), da); 1712 ether_addr_copy(ieee80211_get_SA(hdr), sa); 1713} 1714 1715static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar, 1716 struct sk_buff *msdu, 1717 struct ieee80211_rx_status *status, 1718 const u8 first_hdr[64], 1719 enum htt_rx_mpdu_encrypt_type enctype) 1720{ 1721 struct ath10k_hw_params *hw = &ar->hw_params; 1722 struct ieee80211_hdr *hdr; 1723 size_t hdr_len; 1724 int l3_pad_bytes; 1725 struct htt_rx_desc *rxd; 1726 int bytes_aligned = ar->hw_params.decap_align_bytes; 1727 1728 /* Delivered decapped frame: 1729 * [amsdu header] <-- replaced with 802.11 hdr 1730 * [rfc1042/llc] 1731 * [payload] 1732 */ 1733 1734 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1735 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1736 1737 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 1738 1739 skb_put(msdu, l3_pad_bytes); 1740 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes); 1741 1742 hdr = (struct ieee80211_hdr *)first_hdr; 1743 hdr_len = ieee80211_hdrlen(hdr->frame_control); 1744 1745 if (!(status->flag & RX_FLAG_IV_STRIPPED)) { 1746 memcpy(skb_push(msdu, 1747 ath10k_htt_rx_crypto_param_len(ar, enctype)), 1748 (void *)hdr + round_up(hdr_len, bytes_aligned), 1749 ath10k_htt_rx_crypto_param_len(ar, enctype)); 1750 } 1751 1752 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1753} 1754 1755static void ath10k_htt_rx_h_undecap(struct ath10k *ar, 1756 struct sk_buff *msdu, 1757 struct ieee80211_rx_status *status, 1758 u8 first_hdr[64], 1759 enum htt_rx_mpdu_encrypt_type enctype, 1760 bool is_decrypted) 1761{ 1762 struct ath10k_hw_params *hw = &ar->hw_params; 1763 struct htt_rx_desc *rxd; 1764 struct rx_msdu_start_common *rxd_msdu_start_common; 1765 enum rx_msdu_decap_format decap; 1766 1767 /* First msdu's decapped header: 1768 * [802.11 header] <-- padded to 4 bytes long 1769 * [crypto param] <-- padded to 4 bytes long 1770 * [amsdu header] <-- only if A-MSDU 1771 * [rfc1042/llc] 1772 * 1773 * Other (2nd, 3rd, ..) msdu's decapped header: 1774 * [amsdu header] <-- only if A-MSDU 1775 * [rfc1042/llc] 1776 */ 1777 1778 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1779 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 1780 1781 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1782 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 1783 RX_MSDU_START_INFO1_DECAP_FORMAT); 1784 1785 switch (decap) { 1786 case RX_MSDU_DECAP_RAW: 1787 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype, 1788 is_decrypted, first_hdr); 1789 break; 1790 case RX_MSDU_DECAP_NATIVE_WIFI: 1791 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr, 1792 enctype); 1793 break; 1794 case RX_MSDU_DECAP_ETHERNET2_DIX: 1795 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype); 1796 break; 1797 case RX_MSDU_DECAP_8023_SNAP_LLC: 1798 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr, 1799 enctype); 1800 break; 1801 } 1802} 1803 1804static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb) 1805{ 1806 struct htt_rx_desc *rxd; 1807 struct rx_attention *rxd_attention; 1808 struct rx_msdu_start_common *rxd_msdu_start_common; 1809 u32 flags, info; 1810 bool is_ip4, is_ip6; 1811 bool is_tcp, is_udp; 1812 bool ip_csum_ok, tcpudp_csum_ok; 1813 1814 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1815 (void *)skb->data - hw->rx_desc_ops->rx_desc_size); 1816 1817 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1818 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 1819 flags = __le32_to_cpu(rxd_attention->flags); 1820 info = __le32_to_cpu(rxd_msdu_start_common->info1); 1821 1822 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO); 1823 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO); 1824 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO); 1825 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO); 1826 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL); 1827 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL); 1828 1829 if (!is_ip4 && !is_ip6) 1830 return CHECKSUM_NONE; 1831 if (!is_tcp && !is_udp) 1832 return CHECKSUM_NONE; 1833 if (!ip_csum_ok) 1834 return CHECKSUM_NONE; 1835 if (!tcpudp_csum_ok) 1836 return CHECKSUM_NONE; 1837 1838 return CHECKSUM_UNNECESSARY; 1839} 1840 1841static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw, 1842 struct sk_buff *msdu) 1843{ 1844 msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu); 1845} 1846 1847static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, 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; 1855 ehdr = skb->data + 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 1868static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, 1869 struct sk_buff *skb) 1870{ 1871 struct ieee80211_hdr *hdr; 1872 1873 hdr = (struct ieee80211_hdr *)skb->data; 1874 return !is_multicast_ether_addr(hdr->addr1); 1875} 1876 1877static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, 1878 struct sk_buff *skb, 1879 u16 peer_id, 1880 enum htt_rx_mpdu_encrypt_type enctype) 1881{ 1882 struct ath10k_peer *peer; 1883 union htt_rx_pn_t *last_pn, new_pn = {0}; 1884 struct ieee80211_hdr *hdr; 1885 u8 tid, frag_number; 1886 u32 seq; 1887 1888 peer = ath10k_peer_find_by_id(ar, peer_id); 1889 if (!peer) { 1890 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); 1891 return false; 1892 } 1893 1894 hdr = (struct ieee80211_hdr *)skb->data; 1895 if (ieee80211_is_data_qos(hdr->frame_control)) 1896 tid = ieee80211_get_tid(hdr); 1897 else 1898 tid = ATH10K_TXRX_NON_QOS_TID; 1899 1900 last_pn = &peer->frag_tids_last_pn[tid]; 1901 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, enctype); 1902 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; 1903 seq = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)); 1904 1905 if (frag_number == 0) { 1906 last_pn->pn48 = new_pn.pn48; 1907 peer->frag_tids_seq[tid] = seq; 1908 } else { 1909 if (seq != peer->frag_tids_seq[tid]) 1910 return false; 1911 1912 if (new_pn.pn48 != last_pn->pn48 + 1) 1913 return false; 1914 1915 last_pn->pn48 = new_pn.pn48; 1916 } 1917 1918 return true; 1919} 1920 1921static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 1922 struct sk_buff_head *amsdu, 1923 struct ieee80211_rx_status *status, 1924 bool fill_crypt_header, 1925 u8 *rx_hdr, 1926 enum ath10k_pkt_rx_err *err, 1927 u16 peer_id, 1928 bool frag) 1929{ 1930 struct sk_buff *first; 1931 struct sk_buff *last; 1932 struct sk_buff *msdu, *temp; 1933 struct ath10k_hw_params *hw = &ar->hw_params; 1934 struct htt_rx_desc *rxd; 1935 struct rx_attention *rxd_attention; 1936 struct rx_mpdu_start *rxd_mpdu_start; 1937 1938 struct ieee80211_hdr *hdr; 1939 enum htt_rx_mpdu_encrypt_type enctype; 1940 u8 first_hdr[64]; 1941 u8 *qos; 1942 bool has_fcs_err; 1943 bool has_crypto_err; 1944 bool has_tkip_err; 1945 bool has_peer_idx_invalid; 1946 bool is_decrypted; 1947 bool is_mgmt; 1948 u32 attention; 1949 bool frag_pn_check = true, multicast_check = true; 1950 1951 if (skb_queue_empty(amsdu)) 1952 return; 1953 1954 first = skb_peek(amsdu); 1955 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1956 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 1957 1958 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1959 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 1960 1961 is_mgmt = !!(rxd_attention->flags & 1962 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE)); 1963 1964 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 1965 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 1966 1967 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11 1968 * decapped header. It'll be used for undecapping of each MSDU. 1969 */ 1970 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 1971 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1972 1973 if (rx_hdr) 1974 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN); 1975 1976 /* Each A-MSDU subframe will use the original header as the base and be 1977 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl. 1978 */ 1979 hdr = (void *)first_hdr; 1980 1981 if (ieee80211_is_data_qos(hdr->frame_control)) { 1982 qos = ieee80211_get_qos_ctl(hdr); 1983 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1984 } 1985 1986 /* Some attention flags are valid only in the last MSDU. */ 1987 last = skb_peek_tail(amsdu); 1988 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 1989 (void *)last->data - hw->rx_desc_ops->rx_desc_size); 1990 1991 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd); 1992 attention = __le32_to_cpu(rxd_attention->flags); 1993 1994 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR); 1995 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR); 1996 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR); 1997 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID); 1998 1999 /* Note: If hardware captures an encrypted frame that it can't decrypt, 2000 * e.g. due to fcs error, missing peer or invalid key data it will 2001 * report the frame as raw. 2002 */ 2003 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE && 2004 !has_fcs_err && 2005 !has_crypto_err && 2006 !has_peer_idx_invalid); 2007 2008 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */ 2009 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC | 2010 RX_FLAG_MMIC_ERROR | 2011 RX_FLAG_DECRYPTED | 2012 RX_FLAG_IV_STRIPPED | 2013 RX_FLAG_ONLY_MONITOR | 2014 RX_FLAG_MMIC_STRIPPED); 2015 2016 if (has_fcs_err) 2017 status->flag |= RX_FLAG_FAILED_FCS_CRC; 2018 2019 if (has_tkip_err) 2020 status->flag |= RX_FLAG_MMIC_ERROR; 2021 2022 if (err) { 2023 if (has_fcs_err) 2024 *err = ATH10K_PKT_RX_ERR_FCS; 2025 else if (has_tkip_err) 2026 *err = ATH10K_PKT_RX_ERR_TKIP; 2027 else if (has_crypto_err) 2028 *err = ATH10K_PKT_RX_ERR_CRYPT; 2029 else if (has_peer_idx_invalid) 2030 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL; 2031 } 2032 2033 /* Firmware reports all necessary management frames via WMI already. 2034 * They are not reported to monitor interfaces at all so pass the ones 2035 * coming via HTT to monitor interfaces instead. This simplifies 2036 * matters a lot. 2037 */ 2038 if (is_mgmt) 2039 status->flag |= RX_FLAG_ONLY_MONITOR; 2040 2041 if (is_decrypted) { 2042 status->flag |= RX_FLAG_DECRYPTED; 2043 2044 if (likely(!is_mgmt)) 2045 status->flag |= RX_FLAG_MMIC_STRIPPED; 2046 2047 if (fill_crypt_header) 2048 status->flag |= RX_FLAG_MIC_STRIPPED | 2049 RX_FLAG_ICV_STRIPPED; 2050 else 2051 status->flag |= RX_FLAG_IV_STRIPPED; 2052 } 2053 2054 skb_queue_walk(amsdu, msdu) { 2055 if (frag && !fill_crypt_header && is_decrypted && 2056 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) 2057 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar, 2058 msdu, 2059 peer_id, 2060 enctype); 2061 2062 if (frag) 2063 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, 2064 msdu); 2065 2066 if (!frag_pn_check || !multicast_check) { 2067 /* Discard the fragment with invalid PN or multicast DA 2068 */ 2069 temp = msdu->prev; 2070 __skb_unlink(msdu, amsdu); 2071 dev_kfree_skb_any(msdu); 2072 msdu = temp; 2073 frag_pn_check = true; 2074 multicast_check = true; 2075 continue; 2076 } 2077 2078 ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu); 2079 2080 if (frag && !fill_crypt_header && 2081 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2082 status->flag &= ~RX_FLAG_MMIC_STRIPPED; 2083 2084 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, 2085 is_decrypted); 2086 2087 /* Undecapping involves copying the original 802.11 header back 2088 * to sk_buff. If frame is protected and hardware has decrypted 2089 * it then remove the protected bit. 2090 */ 2091 if (!is_decrypted) 2092 continue; 2093 if (is_mgmt) 2094 continue; 2095 2096 if (fill_crypt_header) 2097 continue; 2098 2099 hdr = (void *)msdu->data; 2100 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2101 2102 if (frag && !fill_crypt_header && 2103 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 2104 status->flag &= ~RX_FLAG_IV_STRIPPED & 2105 ~RX_FLAG_MMIC_STRIPPED; 2106 } 2107} 2108 2109static void ath10k_htt_rx_h_enqueue(struct ath10k *ar, 2110 struct sk_buff_head *amsdu, 2111 struct ieee80211_rx_status *status) 2112{ 2113 struct sk_buff *msdu; 2114 struct sk_buff *first_subframe; 2115 2116 first_subframe = skb_peek(amsdu); 2117 2118 while ((msdu = __skb_dequeue(amsdu))) { 2119 /* Setup per-MSDU flags */ 2120 if (skb_queue_empty(amsdu)) 2121 status->flag &= ~RX_FLAG_AMSDU_MORE; 2122 else 2123 status->flag |= RX_FLAG_AMSDU_MORE; 2124 2125 if (msdu == first_subframe) { 2126 first_subframe = NULL; 2127 status->flag &= ~RX_FLAG_ALLOW_SAME_PN; 2128 } else { 2129 status->flag |= RX_FLAG_ALLOW_SAME_PN; 2130 } 2131 2132 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 2133 } 2134} 2135 2136static int ath10k_unchain_msdu(struct sk_buff_head *amsdu, 2137 unsigned long *unchain_cnt) 2138{ 2139 struct sk_buff *skb, *first; 2140 int space; 2141 int total_len = 0; 2142 int amsdu_len = skb_queue_len(amsdu); 2143 2144 /* TODO: Might could optimize this by using 2145 * skb_try_coalesce or similar method to 2146 * decrease copying, or maybe get mac80211 to 2147 * provide a way to just receive a list of 2148 * skb? 2149 */ 2150 2151 first = __skb_dequeue(amsdu); 2152 2153 /* Allocate total length all at once. */ 2154 skb_queue_walk(amsdu, skb) 2155 total_len += skb->len; 2156 2157 space = total_len - skb_tailroom(first); 2158 if ((space > 0) && 2159 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) { 2160 /* TODO: bump some rx-oom error stat */ 2161 /* put it back together so we can free the 2162 * whole list at once. 2163 */ 2164 __skb_queue_head(amsdu, first); 2165 return -1; 2166 } 2167 2168 /* Walk list again, copying contents into 2169 * msdu_head 2170 */ 2171 while ((skb = __skb_dequeue(amsdu))) { 2172 skb_copy_from_linear_data(skb, skb_put(first, skb->len), 2173 skb->len); 2174 dev_kfree_skb_any(skb); 2175 } 2176 2177 __skb_queue_head(amsdu, first); 2178 2179 *unchain_cnt += amsdu_len - 1; 2180 2181 return 0; 2182} 2183 2184static void ath10k_htt_rx_h_unchain(struct ath10k *ar, 2185 struct sk_buff_head *amsdu, 2186 unsigned long *drop_cnt, 2187 unsigned long *unchain_cnt) 2188{ 2189 struct sk_buff *first; 2190 struct ath10k_hw_params *hw = &ar->hw_params; 2191 struct htt_rx_desc *rxd; 2192 struct rx_msdu_start_common *rxd_msdu_start_common; 2193 struct rx_frag_info_common *rxd_frag_info; 2194 enum rx_msdu_decap_format decap; 2195 2196 first = skb_peek(amsdu); 2197 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2198 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2199 2200 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd); 2201 rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd); 2202 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1), 2203 RX_MSDU_START_INFO1_DECAP_FORMAT); 2204 2205 /* FIXME: Current unchaining logic can only handle simple case of raw 2206 * msdu chaining. If decapping is other than raw the chaining may be 2207 * more complex and this isn't handled by the current code. Don't even 2208 * try re-constructing such frames - it'll be pretty much garbage. 2209 */ 2210 if (decap != RX_MSDU_DECAP_RAW || 2211 skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) { 2212 *drop_cnt += skb_queue_len(amsdu); 2213 __skb_queue_purge(amsdu); 2214 return; 2215 } 2216 2217 ath10k_unchain_msdu(amsdu, unchain_cnt); 2218} 2219 2220static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar, 2221 struct sk_buff_head *amsdu) 2222{ 2223 u8 *subframe_hdr; 2224 struct sk_buff *first; 2225 bool is_first, is_last; 2226 struct ath10k_hw_params *hw = &ar->hw_params; 2227 struct htt_rx_desc *rxd; 2228 struct rx_msdu_end_common *rxd_msdu_end_common; 2229 struct rx_mpdu_start *rxd_mpdu_start; 2230 struct ieee80211_hdr *hdr; 2231 size_t hdr_len, crypto_len; 2232 enum htt_rx_mpdu_encrypt_type enctype; 2233 int bytes_aligned = ar->hw_params.decap_align_bytes; 2234 2235 first = skb_peek(amsdu); 2236 2237 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 2238 (void *)first->data - hw->rx_desc_ops->rx_desc_size); 2239 2240 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 2241 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd); 2242 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd); 2243 2244 is_first = !!(rxd_msdu_end_common->info0 & 2245 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 2246 is_last = !!(rxd_msdu_end_common->info0 & 2247 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 2248 2249 /* Return in case of non-aggregated msdu */ 2250 if (is_first && is_last) 2251 return true; 2252 2253 /* First msdu flag is not set for the first msdu of the list */ 2254 if (!is_first) 2255 return false; 2256 2257 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0), 2258 RX_MPDU_START_INFO0_ENCRYPT_TYPE); 2259 2260 hdr_len = ieee80211_hdrlen(hdr->frame_control); 2261 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 2262 2263 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) + 2264 crypto_len; 2265 2266 /* Validate if the amsdu has a proper first subframe. 2267 * There are chances a single msdu can be received as amsdu when 2268 * the unauthenticated amsdu flag of a QoS header 2269 * gets flipped in non-SPP AMSDU's, in such cases the first 2270 * subframe has llc/snap header in place of a valid da. 2271 * return false if the da matches rfc1042 pattern 2272 */ 2273 if (ether_addr_equal(subframe_hdr, rfc1042_header)) 2274 return false; 2275 2276 return true; 2277} 2278 2279static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar, 2280 struct sk_buff_head *amsdu, 2281 struct ieee80211_rx_status *rx_status) 2282{ 2283 if (!rx_status->freq) { 2284 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n"); 2285 return false; 2286 } 2287 2288 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) { 2289 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n"); 2290 return false; 2291 } 2292 2293 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) { 2294 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n"); 2295 return false; 2296 } 2297 2298 return true; 2299} 2300 2301static void ath10k_htt_rx_h_filter(struct ath10k *ar, 2302 struct sk_buff_head *amsdu, 2303 struct ieee80211_rx_status *rx_status, 2304 unsigned long *drop_cnt) 2305{ 2306 if (skb_queue_empty(amsdu)) 2307 return; 2308 2309 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status)) 2310 return; 2311 2312 if (drop_cnt) 2313 *drop_cnt += skb_queue_len(amsdu); 2314 2315 __skb_queue_purge(amsdu); 2316} 2317 2318static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) 2319{ 2320 struct ath10k *ar = htt->ar; 2321 struct ieee80211_rx_status *rx_status = &htt->rx_status; 2322 struct sk_buff_head amsdu; 2323 int ret; 2324 unsigned long drop_cnt = 0; 2325 unsigned long unchain_cnt = 0; 2326 unsigned long drop_cnt_filter = 0; 2327 unsigned long msdus_to_queue, num_msdus; 2328 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX; 2329 u8 first_hdr[RX_HTT_HDR_STATUS_LEN]; 2330 2331 __skb_queue_head_init(&amsdu); 2332 2333 spin_lock_bh(&htt->rx_ring.lock); 2334 if (htt->rx_confused) { 2335 spin_unlock_bh(&htt->rx_ring.lock); 2336 return -EIO; 2337 } 2338 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu); 2339 spin_unlock_bh(&htt->rx_ring.lock); 2340 2341 if (ret < 0) { 2342 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret); 2343 __skb_queue_purge(&amsdu); 2344 /* FIXME: It's probably a good idea to reboot the 2345 * device instead of leaving it inoperable. 2346 */ 2347 htt->rx_confused = true; 2348 return ret; 2349 } 2350 2351 num_msdus = skb_queue_len(&amsdu); 2352 2353 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); 2354 2355 /* only for ret = 1 indicates chained msdus */ 2356 if (ret > 0) 2357 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt); 2358 2359 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter); 2360 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0, 2361 false); 2362 msdus_to_queue = skb_queue_len(&amsdu); 2363 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); 2364 2365 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err, 2366 unchain_cnt, drop_cnt, drop_cnt_filter, 2367 msdus_to_queue); 2368 2369 return 0; 2370} 2371 2372static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc, 2373 union htt_rx_pn_t *pn, 2374 int pn_len_bits) 2375{ 2376 switch (pn_len_bits) { 2377 case 48: 2378 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) + 2379 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32); 2380 break; 2381 case 24: 2382 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0); 2383 break; 2384 } 2385} 2386 2387static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn, 2388 union htt_rx_pn_t *old_pn) 2389{ 2390 return ((new_pn->pn48 & 0xffffffffffffULL) <= 2391 (old_pn->pn48 & 0xffffffffffffULL)); 2392} 2393 2394static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar, 2395 struct ath10k_peer *peer, 2396 struct htt_rx_indication_hl *rx) 2397{ 2398 bool last_pn_valid, pn_invalid = false; 2399 enum htt_txrx_sec_cast_type sec_index; 2400 enum htt_security_types sec_type; 2401 union htt_rx_pn_t new_pn = {0}; 2402 struct htt_hl_rx_desc *rx_desc; 2403 union htt_rx_pn_t *last_pn; 2404 u32 rx_desc_info, tid; 2405 int num_mpdu_ranges; 2406 2407 lockdep_assert_held(&ar->data_lock); 2408 2409 if (!peer) 2410 return false; 2411 2412 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU)) 2413 return false; 2414 2415 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2416 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2417 2418 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2419 rx_desc_info = __le32_to_cpu(rx_desc->info); 2420 2421 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) 2422 return false; 2423 2424 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2425 last_pn_valid = peer->tids_last_pn_valid[tid]; 2426 last_pn = &peer->tids_last_pn[tid]; 2427 2428 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2429 sec_index = HTT_TXRX_SEC_MCAST; 2430 else 2431 sec_index = HTT_TXRX_SEC_UCAST; 2432 2433 sec_type = peer->rx_pn[sec_index].sec_type; 2434 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2435 2436 if (sec_type != HTT_SECURITY_AES_CCMP && 2437 sec_type != HTT_SECURITY_TKIP && 2438 sec_type != HTT_SECURITY_TKIP_NOMIC) 2439 return false; 2440 2441 if (last_pn_valid) 2442 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn); 2443 else 2444 peer->tids_last_pn_valid[tid] = true; 2445 2446 if (!pn_invalid) 2447 last_pn->pn48 = new_pn.pn48; 2448 2449 return pn_invalid; 2450} 2451 2452static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt, 2453 struct htt_rx_indication_hl *rx, 2454 struct sk_buff *skb, 2455 enum htt_rx_pn_check_type check_pn_type, 2456 enum htt_rx_tkip_demic_type tkip_mic_type) 2457{ 2458 struct ath10k *ar = htt->ar; 2459 struct ath10k_peer *peer; 2460 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2461 struct fw_rx_desc_hl *fw_desc; 2462 enum htt_txrx_sec_cast_type sec_index; 2463 enum htt_security_types sec_type; 2464 union htt_rx_pn_t new_pn = {0}; 2465 struct htt_hl_rx_desc *rx_desc; 2466 struct ieee80211_hdr *hdr; 2467 struct ieee80211_rx_status *rx_status; 2468 u16 peer_id; 2469 u8 rx_desc_len; 2470 int num_mpdu_ranges; 2471 size_t tot_hdr_len; 2472 struct ieee80211_channel *ch; 2473 bool pn_invalid, qos, first_msdu; 2474 u32 tid, rx_desc_info; 2475 2476 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2477 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2478 2479 spin_lock_bh(&ar->data_lock); 2480 peer = ath10k_peer_find_by_id(ar, peer_id); 2481 spin_unlock_bh(&ar->data_lock); 2482 if (!peer && peer_id != HTT_INVALID_PEERID) 2483 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id); 2484 2485 if (!peer) 2486 return true; 2487 2488 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2489 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2490 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx); 2491 fw_desc = &rx->fw_desc; 2492 rx_desc_len = fw_desc->len; 2493 2494 if (fw_desc->u.bits.discard) { 2495 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); 2496 goto err; 2497 } 2498 2499 /* I have not yet seen any case where num_mpdu_ranges > 1. 2500 * qcacld does not seem handle that case either, so we introduce the 2501 * same limitation here as well. 2502 */ 2503 if (num_mpdu_ranges > 1) 2504 ath10k_warn(ar, 2505 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n", 2506 num_mpdu_ranges); 2507 2508 if (mpdu_ranges->mpdu_range_status != 2509 HTT_RX_IND_MPDU_STATUS_OK && 2510 mpdu_ranges->mpdu_range_status != 2511 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) { 2512 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n", 2513 mpdu_ranges->mpdu_range_status); 2514 goto err; 2515 } 2516 2517 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; 2518 rx_desc_info = __le32_to_cpu(rx_desc->info); 2519 2520 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) 2521 sec_index = HTT_TXRX_SEC_MCAST; 2522 else 2523 sec_index = HTT_TXRX_SEC_UCAST; 2524 2525 sec_type = peer->rx_pn[sec_index].sec_type; 2526 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU; 2527 2528 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2529 2530 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) { 2531 spin_lock_bh(&ar->data_lock); 2532 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx); 2533 spin_unlock_bh(&ar->data_lock); 2534 2535 if (pn_invalid) 2536 goto err; 2537 } 2538 2539 /* Strip off all headers before the MAC header before delivery to 2540 * mac80211 2541 */ 2542 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) + 2543 sizeof(rx->ppdu) + sizeof(rx->prefix) + 2544 sizeof(rx->fw_desc) + 2545 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len; 2546 2547 skb_pull(skb, tot_hdr_len); 2548 2549 hdr = (struct ieee80211_hdr *)skb->data; 2550 qos = ieee80211_is_data_qos(hdr->frame_control); 2551 2552 rx_status = IEEE80211_SKB_RXCB(skb); 2553 memset(rx_status, 0, sizeof(*rx_status)); 2554 2555 if (rx->ppdu.combined_rssi == 0) { 2556 /* SDIO firmware does not provide signal */ 2557 rx_status->signal = 0; 2558 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; 2559 } else { 2560 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 2561 rx->ppdu.combined_rssi; 2562 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 2563 } 2564 2565 spin_lock_bh(&ar->data_lock); 2566 ch = ar->scan_channel; 2567 if (!ch) 2568 ch = ar->rx_channel; 2569 if (!ch) 2570 ch = ath10k_htt_rx_h_any_channel(ar); 2571 if (!ch) 2572 ch = ar->tgt_oper_chan; 2573 spin_unlock_bh(&ar->data_lock); 2574 2575 if (ch) { 2576 rx_status->band = ch->band; 2577 rx_status->freq = ch->center_freq; 2578 } 2579 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU) 2580 rx_status->flag &= ~RX_FLAG_AMSDU_MORE; 2581 else 2582 rx_status->flag |= RX_FLAG_AMSDU_MORE; 2583 2584 /* Not entirely sure about this, but all frames from the chipset has 2585 * the protected flag set even though they have already been decrypted. 2586 * Unmasking this flag is necessary in order for mac80211 not to drop 2587 * the frame. 2588 * TODO: Verify this is always the case or find out a way to check 2589 * if there has been hw decryption. 2590 */ 2591 if (ieee80211_has_protected(hdr->frame_control)) { 2592 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2593 rx_status->flag |= RX_FLAG_DECRYPTED | 2594 RX_FLAG_IV_STRIPPED | 2595 RX_FLAG_MMIC_STRIPPED; 2596 2597 if (tid < IEEE80211_NUM_TIDS && 2598 first_msdu && 2599 check_pn_type == HTT_RX_PN_CHECK && 2600 (sec_type == HTT_SECURITY_AES_CCMP || 2601 sec_type == HTT_SECURITY_TKIP || 2602 sec_type == HTT_SECURITY_TKIP_NOMIC)) { 2603 u8 offset, *ivp, i; 2604 s8 keyidx = 0; 2605 __le64 pn48 = cpu_to_le64(new_pn.pn48); 2606 2607 hdr = (struct ieee80211_hdr *)skb->data; 2608 offset = ieee80211_hdrlen(hdr->frame_control); 2609 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2610 rx_status->flag &= ~RX_FLAG_IV_STRIPPED; 2611 2612 memmove(skb->data - IEEE80211_CCMP_HDR_LEN, 2613 skb->data, offset); 2614 skb_push(skb, IEEE80211_CCMP_HDR_LEN); 2615 ivp = skb->data + offset; 2616 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN); 2617 /* Ext IV */ 2618 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV; 2619 2620 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { 2621 if (peer->keys[i] && 2622 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE) 2623 keyidx = peer->keys[i]->keyidx; 2624 } 2625 2626 /* Key ID */ 2627 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6; 2628 2629 if (sec_type == HTT_SECURITY_AES_CCMP) { 2630 rx_status->flag |= RX_FLAG_MIC_STRIPPED; 2631 /* pn 0, pn 1 */ 2632 memcpy(skb->data + offset, &pn48, 2); 2633 /* pn 1, pn 3 , pn 34 , pn 5 */ 2634 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2635 } else { 2636 rx_status->flag |= RX_FLAG_ICV_STRIPPED; 2637 /* TSC 0 */ 2638 memcpy(skb->data + offset + 2, &pn48, 1); 2639 /* TSC 1 */ 2640 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1); 2641 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/ 2642 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); 2643 } 2644 } 2645 } 2646 2647 if (tkip_mic_type == HTT_RX_TKIP_MIC) 2648 rx_status->flag &= ~RX_FLAG_IV_STRIPPED & 2649 ~RX_FLAG_MMIC_STRIPPED; 2650 2651 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) 2652 rx_status->flag |= RX_FLAG_MMIC_ERROR; 2653 2654 if (!qos && tid < IEEE80211_NUM_TIDS) { 2655 u8 offset; 2656 __le16 qos_ctrl = 0; 2657 2658 hdr = (struct ieee80211_hdr *)skb->data; 2659 offset = ieee80211_hdrlen(hdr->frame_control); 2660 2661 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA); 2662 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset); 2663 skb_push(skb, IEEE80211_QOS_CTL_LEN); 2664 qos_ctrl = cpu_to_le16(tid); 2665 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN); 2666 } 2667 2668 if (ar->napi.dev) 2669 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 2670 else 2671 ieee80211_rx_ni(ar->hw, skb); 2672 2673 /* We have delivered the skb to the upper layers (mac80211) so we 2674 * must not free it. 2675 */ 2676 return false; 2677err: 2678 /* Tell the caller that it must free the skb since we have not 2679 * consumed it 2680 */ 2681 return true; 2682} 2683 2684static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb, 2685 u16 head_len, 2686 u16 hdr_len) 2687{ 2688 u8 *ivp, *orig_hdr; 2689 2690 orig_hdr = skb->data; 2691 ivp = orig_hdr + hdr_len + head_len; 2692 2693 /* the ExtIV bit is always set to 1 for TKIP */ 2694 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2695 return -EINVAL; 2696 2697 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2698 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2699 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN); 2700 return 0; 2701} 2702 2703static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb, 2704 u16 head_len, 2705 u16 hdr_len) 2706{ 2707 u8 *ivp, *orig_hdr; 2708 2709 orig_hdr = skb->data; 2710 ivp = orig_hdr + hdr_len + head_len; 2711 2712 /* the ExtIV bit is always set to 1 for TKIP */ 2713 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2714 return -EINVAL; 2715 2716 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); 2717 skb_pull(skb, IEEE80211_TKIP_IV_LEN); 2718 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN); 2719 return 0; 2720} 2721 2722static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb, 2723 u16 head_len, 2724 u16 hdr_len) 2725{ 2726 u8 *ivp, *orig_hdr; 2727 2728 orig_hdr = skb->data; 2729 ivp = orig_hdr + hdr_len + head_len; 2730 2731 /* the ExtIV bit is always set to 1 for CCMP */ 2732 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) 2733 return -EINVAL; 2734 2735 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN); 2736 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len); 2737 skb_pull(skb, IEEE80211_CCMP_HDR_LEN); 2738 return 0; 2739} 2740 2741static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb, 2742 u16 head_len, 2743 u16 hdr_len) 2744{ 2745 u8 *orig_hdr; 2746 2747 orig_hdr = skb->data; 2748 2749 memmove(orig_hdr + IEEE80211_WEP_IV_LEN, 2750 orig_hdr, head_len + hdr_len); 2751 skb_pull(skb, IEEE80211_WEP_IV_LEN); 2752 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN); 2753 return 0; 2754} 2755 2756static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt, 2757 struct htt_rx_fragment_indication *rx, 2758 struct sk_buff *skb) 2759{ 2760 struct ath10k *ar = htt->ar; 2761 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC; 2762 enum htt_txrx_sec_cast_type sec_index; 2763 struct htt_rx_indication_hl *rx_hl; 2764 enum htt_security_types sec_type; 2765 u32 tid, frag, seq, rx_desc_info; 2766 union htt_rx_pn_t new_pn = {0}; 2767 struct htt_hl_rx_desc *rx_desc; 2768 u16 peer_id, sc, hdr_space; 2769 union htt_rx_pn_t *last_pn; 2770 struct ieee80211_hdr *hdr; 2771 int ret, num_mpdu_ranges; 2772 struct ath10k_peer *peer; 2773 struct htt_resp *resp; 2774 size_t tot_hdr_len; 2775 2776 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2777 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN); 2778 skb_trim(skb, skb->len - FCS_LEN); 2779 2780 peer_id = __le16_to_cpu(rx->peer_id); 2781 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl); 2782 2783 spin_lock_bh(&ar->data_lock); 2784 peer = ath10k_peer_find_by_id(ar, peer_id); 2785 if (!peer) { 2786 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id); 2787 goto err; 2788 } 2789 2790 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1), 2791 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2792 2793 tot_hdr_len = sizeof(struct htt_resp_hdr) + 2794 sizeof(rx_hl->hdr) + 2795 sizeof(rx_hl->ppdu) + 2796 sizeof(rx_hl->prefix) + 2797 sizeof(rx_hl->fw_desc) + 2798 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges; 2799 2800 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2801 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len); 2802 rx_desc_info = __le32_to_cpu(rx_desc->info); 2803 2804 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); 2805 2806 if (is_multicast_ether_addr(hdr->addr1)) { 2807 /* Discard the fragment with multicast DA */ 2808 goto err; 2809 } 2810 2811 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) { 2812 spin_unlock_bh(&ar->data_lock); 2813 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2814 HTT_RX_NON_PN_CHECK, 2815 HTT_RX_NON_TKIP_MIC); 2816 } 2817 2818 if (ieee80211_has_retry(hdr->frame_control)) 2819 goto err; 2820 2821 hdr_space = ieee80211_hdrlen(hdr->frame_control); 2822 sc = __le16_to_cpu(hdr->seq_ctrl); 2823 seq = IEEE80211_SEQ_TO_SN(sc); 2824 frag = sc & IEEE80211_SCTL_FRAG; 2825 2826 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ? 2827 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST; 2828 sec_type = peer->rx_pn[sec_index].sec_type; 2829 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); 2830 2831 switch (sec_type) { 2832 case HTT_SECURITY_TKIP: 2833 tkip_mic = HTT_RX_TKIP_MIC; 2834 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb, 2835 tot_hdr_len + 2836 rx_hl->fw_desc.len, 2837 hdr_space); 2838 if (ret) 2839 goto err; 2840 break; 2841 case HTT_SECURITY_TKIP_NOMIC: 2842 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb, 2843 tot_hdr_len + 2844 rx_hl->fw_desc.len, 2845 hdr_space); 2846 if (ret) 2847 goto err; 2848 break; 2849 case HTT_SECURITY_AES_CCMP: 2850 ret = ath10k_htt_rx_frag_ccmp_decap(skb, 2851 tot_hdr_len + rx_hl->fw_desc.len, 2852 hdr_space); 2853 if (ret) 2854 goto err; 2855 break; 2856 case HTT_SECURITY_WEP128: 2857 case HTT_SECURITY_WEP104: 2858 case HTT_SECURITY_WEP40: 2859 ret = ath10k_htt_rx_frag_wep_decap(skb, 2860 tot_hdr_len + rx_hl->fw_desc.len, 2861 hdr_space); 2862 if (ret) 2863 goto err; 2864 break; 2865 default: 2866 break; 2867 } 2868 2869 resp = (struct htt_resp *)(skb->data); 2870 2871 if (sec_type != HTT_SECURITY_AES_CCMP && 2872 sec_type != HTT_SECURITY_TKIP && 2873 sec_type != HTT_SECURITY_TKIP_NOMIC) { 2874 spin_unlock_bh(&ar->data_lock); 2875 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2876 HTT_RX_NON_PN_CHECK, 2877 HTT_RX_NON_TKIP_MIC); 2878 } 2879 2880 last_pn = &peer->frag_tids_last_pn[tid]; 2881 2882 if (frag == 0) { 2883 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl)) 2884 goto err; 2885 2886 last_pn->pn48 = new_pn.pn48; 2887 peer->frag_tids_seq[tid] = seq; 2888 } else if (sec_type == HTT_SECURITY_AES_CCMP) { 2889 if (seq != peer->frag_tids_seq[tid]) 2890 goto err; 2891 2892 if (new_pn.pn48 != last_pn->pn48 + 1) 2893 goto err; 2894 2895 last_pn->pn48 = new_pn.pn48; 2896 last_pn = &peer->tids_last_pn[tid]; 2897 last_pn->pn48 = new_pn.pn48; 2898 } 2899 2900 spin_unlock_bh(&ar->data_lock); 2901 2902 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, 2903 HTT_RX_NON_PN_CHECK, tkip_mic); 2904 2905err: 2906 spin_unlock_bh(&ar->data_lock); 2907 2908 /* Tell the caller that it must free the skb since we have not 2909 * consumed it 2910 */ 2911 return true; 2912} 2913 2914static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt, 2915 struct htt_rx_indication *rx) 2916{ 2917 struct ath10k *ar = htt->ar; 2918 struct htt_rx_indication_mpdu_range *mpdu_ranges; 2919 int num_mpdu_ranges; 2920 int i, mpdu_count = 0; 2921 u16 peer_id; 2922 u8 tid; 2923 2924 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 2925 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 2926 peer_id = __le16_to_cpu(rx->hdr.peer_id); 2927 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); 2928 2929 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx); 2930 2931 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ", 2932 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges)); 2933 2934 for (i = 0; i < num_mpdu_ranges; i++) 2935 mpdu_count += mpdu_ranges[i].mpdu_count; 2936 2937 atomic_add(mpdu_count, &htt->num_mpdus_ready); 2938 2939 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges, 2940 num_mpdu_ranges); 2941} 2942 2943static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, 2944 struct sk_buff *skb) 2945{ 2946 struct ath10k_htt *htt = &ar->htt; 2947 struct htt_resp *resp = (struct htt_resp *)skb->data; 2948 struct htt_tx_done tx_done = {}; 2949 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS); 2950 __le16 msdu_id, *msdus; 2951 bool rssi_enabled = false; 2952 u8 msdu_count = 0, num_airtime_records, tid; 2953 int i, htt_pad = 0; 2954 struct htt_data_tx_compl_ppdu_dur *ppdu_info; 2955 struct ath10k_peer *peer; 2956 u16 ppdu_info_offset = 0, peer_id; 2957 u32 tx_duration; 2958 2959 switch (status) { 2960 case HTT_DATA_TX_STATUS_NO_ACK: 2961 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 2962 break; 2963 case HTT_DATA_TX_STATUS_OK: 2964 tx_done.status = HTT_TX_COMPL_STATE_ACK; 2965 break; 2966 case HTT_DATA_TX_STATUS_DISCARD: 2967 case HTT_DATA_TX_STATUS_POSTPONE: 2968 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2969 break; 2970 default: 2971 ath10k_warn(ar, "unhandled tx completion status %d\n", status); 2972 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 2973 break; 2974 } 2975 2976 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n", 2977 resp->data_tx_completion.num_msdus); 2978 2979 msdu_count = resp->data_tx_completion.num_msdus; 2980 msdus = resp->data_tx_completion.msdus; 2981 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp); 2982 2983 if (rssi_enabled) 2984 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params, 2985 resp); 2986 2987 for (i = 0; i < msdu_count; i++) { 2988 msdu_id = msdus[i]; 2989 tx_done.msdu_id = __le16_to_cpu(msdu_id); 2990 2991 if (rssi_enabled) { 2992 /* Total no of MSDUs should be even, 2993 * if odd MSDUs are sent firmware fills 2994 * last msdu id with 0xffff 2995 */ 2996 if (msdu_count & 0x01) { 2997 msdu_id = msdus[msdu_count + i + 1 + htt_pad]; 2998 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 2999 } else { 3000 msdu_id = msdus[msdu_count + i + htt_pad]; 3001 tx_done.ack_rssi = __le16_to_cpu(msdu_id); 3002 } 3003 } 3004 3005 /* kfifo_put: In practice firmware shouldn't fire off per-CE 3006 * interrupt and main interrupt (MSI/-X range case) for the same 3007 * HTC service so it should be safe to use kfifo_put w/o lock. 3008 * 3009 * From kfifo_put() documentation: 3010 * Note that with only one concurrent reader and one concurrent 3011 * writer, you don't need extra locking to use these macro. 3012 */ 3013 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) { 3014 ath10k_txrx_tx_unref(htt, &tx_done); 3015 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) { 3016 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n", 3017 tx_done.msdu_id, tx_done.status); 3018 ath10k_txrx_tx_unref(htt, &tx_done); 3019 } 3020 } 3021 3022 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT)) 3023 return; 3024 3025 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count; 3026 3027 if (rssi_enabled) 3028 ppdu_info_offset += ppdu_info_offset; 3029 3030 if (resp->data_tx_completion.flags2 & 3031 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT)) 3032 ppdu_info_offset += 2; 3033 3034 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset]; 3035 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK, 3036 __le32_to_cpu(ppdu_info->info0)); 3037 3038 for (i = 0; i < num_airtime_records; i++) { 3039 struct htt_data_tx_ppdu_dur *ppdu_dur; 3040 u32 info0; 3041 3042 ppdu_dur = &ppdu_info->ppdu_dur[i]; 3043 info0 = __le32_to_cpu(ppdu_dur->info0); 3044 3045 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK, 3046 info0); 3047 rcu_read_lock(); 3048 spin_lock_bh(&ar->data_lock); 3049 3050 peer = ath10k_peer_find_by_id(ar, peer_id); 3051 if (!peer || !peer->sta) { 3052 spin_unlock_bh(&ar->data_lock); 3053 rcu_read_unlock(); 3054 continue; 3055 } 3056 3057 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) & 3058 IEEE80211_QOS_CTL_TID_MASK; 3059 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration); 3060 3061 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0); 3062 3063 spin_unlock_bh(&ar->data_lock); 3064 rcu_read_unlock(); 3065 } 3066} 3067 3068static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp) 3069{ 3070 struct htt_rx_addba *ev = &resp->rx_addba; 3071 struct ath10k_peer *peer; 3072 struct ath10k_vif *arvif; 3073 u16 info0, tid, peer_id; 3074 3075 info0 = __le16_to_cpu(ev->info0); 3076 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3077 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3078 3079 ath10k_dbg(ar, ATH10K_DBG_HTT, 3080 "htt rx addba tid %u peer_id %u size %u\n", 3081 tid, peer_id, ev->window_size); 3082 3083 spin_lock_bh(&ar->data_lock); 3084 peer = ath10k_peer_find_by_id(ar, peer_id); 3085 if (!peer) { 3086 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3087 peer_id); 3088 spin_unlock_bh(&ar->data_lock); 3089 return; 3090 } 3091 3092 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3093 if (!arvif) { 3094 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3095 peer->vdev_id); 3096 spin_unlock_bh(&ar->data_lock); 3097 return; 3098 } 3099 3100 ath10k_dbg(ar, ATH10K_DBG_HTT, 3101 "htt rx start rx ba session sta %pM tid %u size %u\n", 3102 peer->addr, tid, ev->window_size); 3103 3104 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3105 spin_unlock_bh(&ar->data_lock); 3106} 3107 3108static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp) 3109{ 3110 struct htt_rx_delba *ev = &resp->rx_delba; 3111 struct ath10k_peer *peer; 3112 struct ath10k_vif *arvif; 3113 u16 info0, tid, peer_id; 3114 3115 info0 = __le16_to_cpu(ev->info0); 3116 tid = MS(info0, HTT_RX_BA_INFO0_TID); 3117 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 3118 3119 ath10k_dbg(ar, ATH10K_DBG_HTT, 3120 "htt rx delba tid %u peer_id %u\n", 3121 tid, peer_id); 3122 3123 spin_lock_bh(&ar->data_lock); 3124 peer = ath10k_peer_find_by_id(ar, peer_id); 3125 if (!peer) { 3126 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", 3127 peer_id); 3128 spin_unlock_bh(&ar->data_lock); 3129 return; 3130 } 3131 3132 arvif = ath10k_get_arvif(ar, peer->vdev_id); 3133 if (!arvif) { 3134 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 3135 peer->vdev_id); 3136 spin_unlock_bh(&ar->data_lock); 3137 return; 3138 } 3139 3140 ath10k_dbg(ar, ATH10K_DBG_HTT, 3141 "htt rx stop rx ba session sta %pM tid %u\n", 3142 peer->addr, tid); 3143 3144 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid); 3145 spin_unlock_bh(&ar->data_lock); 3146} 3147 3148static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw, 3149 struct sk_buff_head *list, 3150 struct sk_buff_head *amsdu) 3151{ 3152 struct sk_buff *msdu; 3153 struct htt_rx_desc *rxd; 3154 struct rx_msdu_end_common *rxd_msdu_end_common; 3155 3156 if (skb_queue_empty(list)) 3157 return -ENOBUFS; 3158 3159 if (WARN_ON(!skb_queue_empty(amsdu))) 3160 return -EINVAL; 3161 3162 while ((msdu = __skb_dequeue(list))) { 3163 __skb_queue_tail(amsdu, msdu); 3164 3165 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3166 (void *)msdu->data - 3167 hw->rx_desc_ops->rx_desc_size); 3168 3169 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3170 if (rxd_msdu_end_common->info0 & 3171 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)) 3172 break; 3173 } 3174 3175 msdu = skb_peek_tail(amsdu); 3176 rxd = HTT_RX_BUF_TO_RX_DESC(hw, 3177 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size); 3178 3179 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd); 3180 if (!(rxd_msdu_end_common->info0 & 3181 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) { 3182 skb_queue_splice_init(amsdu, list); 3183 return -EAGAIN; 3184 } 3185 3186 return 0; 3187} 3188 3189static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, 3190 struct sk_buff *skb) 3191{ 3192 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3193 3194 if (!ieee80211_has_protected(hdr->frame_control)) 3195 return; 3196 3197 /* Offloaded frames are already decrypted but firmware insists they are 3198 * protected in the 802.11 header. Strip the flag. Otherwise mac80211 3199 * will drop the frame. 3200 */ 3201 3202 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 3203 status->flag |= RX_FLAG_DECRYPTED | 3204 RX_FLAG_IV_STRIPPED | 3205 RX_FLAG_MMIC_STRIPPED; 3206} 3207 3208static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar, 3209 struct sk_buff_head *list) 3210{ 3211 struct ath10k_htt *htt = &ar->htt; 3212 struct ieee80211_rx_status *status = &htt->rx_status; 3213 struct htt_rx_offload_msdu *rx; 3214 struct sk_buff *msdu; 3215 size_t offset; 3216 3217 while ((msdu = __skb_dequeue(list))) { 3218 /* Offloaded frames don't have Rx descriptor. Instead they have 3219 * a short meta information header. 3220 */ 3221 3222 rx = (void *)msdu->data; 3223 3224 skb_put(msdu, sizeof(*rx)); 3225 skb_pull(msdu, sizeof(*rx)); 3226 3227 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) { 3228 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n"); 3229 dev_kfree_skb_any(msdu); 3230 continue; 3231 } 3232 3233 skb_put(msdu, __le16_to_cpu(rx->msdu_len)); 3234 3235 /* Offloaded rx header length isn't multiple of 2 nor 4 so the 3236 * actual payload is unaligned. Align the frame. Otherwise 3237 * mac80211 complains. This shouldn't reduce performance much 3238 * because these offloaded frames are rare. 3239 */ 3240 offset = 4 - ((unsigned long)msdu->data & 3); 3241 skb_put(msdu, offset); 3242 memmove(msdu->data + offset, msdu->data, msdu->len); 3243 skb_pull(msdu, offset); 3244 3245 /* FIXME: The frame is NWifi. Re-construct QoS Control 3246 * if possible later. 3247 */ 3248 3249 memset(status, 0, sizeof(*status)); 3250 status->flag |= RX_FLAG_NO_SIGNAL_VAL; 3251 3252 ath10k_htt_rx_h_rx_offload_prot(status, msdu); 3253 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); 3254 ath10k_htt_rx_h_queue_msdu(ar, status, msdu); 3255 } 3256} 3257 3258static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) 3259{ 3260 struct ath10k_htt *htt = &ar->htt; 3261 struct htt_resp *resp = (void *)skb->data; 3262 struct ieee80211_rx_status *status = &htt->rx_status; 3263 struct sk_buff_head list; 3264 struct sk_buff_head amsdu; 3265 u16 peer_id; 3266 u16 msdu_count; 3267 u8 vdev_id; 3268 u8 tid; 3269 bool offload; 3270 bool frag; 3271 int ret; 3272 3273 lockdep_assert_held(&htt->rx_ring.lock); 3274 3275 if (htt->rx_confused) 3276 return -EIO; 3277 3278 skb_pull(skb, sizeof(resp->hdr)); 3279 skb_pull(skb, sizeof(resp->rx_in_ord_ind)); 3280 3281 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id); 3282 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count); 3283 vdev_id = resp->rx_in_ord_ind.vdev_id; 3284 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID); 3285 offload = !!(resp->rx_in_ord_ind.info & 3286 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 3287 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK); 3288 3289 ath10k_dbg(ar, ATH10K_DBG_HTT, 3290 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n", 3291 vdev_id, peer_id, tid, offload, frag, msdu_count); 3292 3293 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) { 3294 ath10k_warn(ar, "dropping invalid in order rx indication\n"); 3295 return -EINVAL; 3296 } 3297 3298 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later 3299 * extracted and processed. 3300 */ 3301 __skb_queue_head_init(&list); 3302 if (ar->hw_params.target_64bit) 3303 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind, 3304 &list); 3305 else 3306 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind, 3307 &list); 3308 3309 if (ret < 0) { 3310 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret); 3311 htt->rx_confused = true; 3312 return -EIO; 3313 } 3314 3315 /* Offloaded frames are very different and need to be handled 3316 * separately. 3317 */ 3318 if (offload) 3319 ath10k_htt_rx_h_rx_offload(ar, &list); 3320 3321 while (!skb_queue_empty(&list)) { 3322 __skb_queue_head_init(&amsdu); 3323 ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu); 3324 switch (ret) { 3325 case 0: 3326 /* Note: The in-order indication may report interleaved 3327 * frames from different PPDUs meaning reported rx rate 3328 * to mac80211 isn't accurate/reliable. It's still 3329 * better to report something than nothing though. This 3330 * should still give an idea about rx rate to the user. 3331 */ 3332 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); 3333 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL); 3334 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL, 3335 NULL, peer_id, frag); 3336 ath10k_htt_rx_h_enqueue(ar, &amsdu, status); 3337 break; 3338 case -EAGAIN: 3339 fallthrough; 3340 default: 3341 /* Should not happen. */ 3342 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret); 3343 htt->rx_confused = true; 3344 __skb_queue_purge(&list); 3345 return -EIO; 3346 } 3347 } 3348 return ret; 3349} 3350 3351static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, 3352 const __le32 *resp_ids, 3353 int num_resp_ids) 3354{ 3355 int i; 3356 u32 resp_id; 3357 3358 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n", 3359 num_resp_ids); 3360 3361 for (i = 0; i < num_resp_ids; i++) { 3362 resp_id = le32_to_cpu(resp_ids[i]); 3363 3364 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n", 3365 resp_id); 3366 3367 /* TODO: free resp_id */ 3368 } 3369} 3370 3371static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb) 3372{ 3373 struct ieee80211_hw *hw = ar->hw; 3374 struct ieee80211_txq *txq; 3375 struct htt_resp *resp = (struct htt_resp *)skb->data; 3376 struct htt_tx_fetch_record *record; 3377 size_t len; 3378 size_t max_num_bytes; 3379 size_t max_num_msdus; 3380 size_t num_bytes; 3381 size_t num_msdus; 3382 const __le32 *resp_ids; 3383 u16 num_records; 3384 u16 num_resp_ids; 3385 u16 peer_id; 3386 u8 tid; 3387 int ret; 3388 int i; 3389 bool may_tx; 3390 3391 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n"); 3392 3393 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind); 3394 if (unlikely(skb->len < len)) { 3395 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n"); 3396 return; 3397 } 3398 3399 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records); 3400 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids); 3401 3402 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records; 3403 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids; 3404 3405 if (unlikely(skb->len < len)) { 3406 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n"); 3407 return; 3408 } 3409 3410 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n", 3411 num_records, num_resp_ids, 3412 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num)); 3413 3414 if (!ar->htt.tx_q_state.enabled) { 3415 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n"); 3416 return; 3417 } 3418 3419 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) { 3420 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n"); 3421 return; 3422 } 3423 3424 rcu_read_lock(); 3425 3426 for (i = 0; i < num_records; i++) { 3427 record = &resp->tx_fetch_ind.records[i]; 3428 peer_id = MS(le16_to_cpu(record->info), 3429 HTT_TX_FETCH_RECORD_INFO_PEER_ID); 3430 tid = MS(le16_to_cpu(record->info), 3431 HTT_TX_FETCH_RECORD_INFO_TID); 3432 max_num_msdus = le16_to_cpu(record->num_msdus); 3433 max_num_bytes = le32_to_cpu(record->num_bytes); 3434 3435 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n", 3436 i, peer_id, tid, max_num_msdus, max_num_bytes); 3437 3438 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3439 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3440 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3441 peer_id, tid); 3442 continue; 3443 } 3444 3445 spin_lock_bh(&ar->data_lock); 3446 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3447 spin_unlock_bh(&ar->data_lock); 3448 3449 /* It is okay to release the lock and use txq because RCU read 3450 * lock is held. 3451 */ 3452 3453 if (unlikely(!txq)) { 3454 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3455 peer_id, tid); 3456 continue; 3457 } 3458 3459 num_msdus = 0; 3460 num_bytes = 0; 3461 3462 ieee80211_txq_schedule_start(hw, txq->ac); 3463 may_tx = ieee80211_txq_may_transmit(hw, txq); 3464 while (num_msdus < max_num_msdus && 3465 num_bytes < max_num_bytes) { 3466 if (!may_tx) 3467 break; 3468 3469 ret = ath10k_mac_tx_push_txq(hw, txq); 3470 if (ret < 0) 3471 break; 3472 3473 num_msdus++; 3474 num_bytes += ret; 3475 } 3476 ieee80211_return_txq(hw, txq, false); 3477 ieee80211_txq_schedule_end(hw, txq->ac); 3478 3479 record->num_msdus = cpu_to_le16(num_msdus); 3480 record->num_bytes = cpu_to_le32(num_bytes); 3481 3482 ath10k_htt_tx_txq_recalc(hw, txq); 3483 } 3484 3485 rcu_read_unlock(); 3486 3487 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind); 3488 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids); 3489 3490 ret = ath10k_htt_tx_fetch_resp(ar, 3491 resp->tx_fetch_ind.token, 3492 resp->tx_fetch_ind.fetch_seq_num, 3493 resp->tx_fetch_ind.records, 3494 num_records); 3495 if (unlikely(ret)) { 3496 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n", 3497 le32_to_cpu(resp->tx_fetch_ind.token), ret); 3498 /* FIXME: request fw restart */ 3499 } 3500 3501 ath10k_htt_tx_txq_sync(ar); 3502} 3503 3504static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar, 3505 struct sk_buff *skb) 3506{ 3507 const struct htt_resp *resp = (void *)skb->data; 3508 size_t len; 3509 int num_resp_ids; 3510 3511 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n"); 3512 3513 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm); 3514 if (unlikely(skb->len < len)) { 3515 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n"); 3516 return; 3517 } 3518 3519 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids); 3520 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids; 3521 3522 if (unlikely(skb->len < len)) { 3523 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n"); 3524 return; 3525 } 3526 3527 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, 3528 resp->tx_fetch_confirm.resp_ids, 3529 num_resp_ids); 3530} 3531 3532static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar, 3533 struct sk_buff *skb) 3534{ 3535 const struct htt_resp *resp = (void *)skb->data; 3536 const struct htt_tx_mode_switch_record *record; 3537 struct ieee80211_txq *txq; 3538 struct ath10k_txq *artxq; 3539 size_t len; 3540 size_t num_records; 3541 enum htt_tx_mode_switch_mode mode; 3542 bool enable; 3543 u16 info0; 3544 u16 info1; 3545 u16 threshold; 3546 u16 peer_id; 3547 u8 tid; 3548 int i; 3549 3550 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n"); 3551 3552 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind); 3553 if (unlikely(skb->len < len)) { 3554 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n"); 3555 return; 3556 } 3557 3558 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0); 3559 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1); 3560 3561 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE); 3562 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3563 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE); 3564 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 3565 3566 ath10k_dbg(ar, ATH10K_DBG_HTT, 3567 "htt rx tx mode switch ind info0 0x%04x info1 0x%04x enable %d num records %zd mode %d threshold %u\n", 3568 info0, info1, enable, num_records, mode, threshold); 3569 3570 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records; 3571 3572 if (unlikely(skb->len < len)) { 3573 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n"); 3574 return; 3575 } 3576 3577 switch (mode) { 3578 case HTT_TX_MODE_SWITCH_PUSH: 3579 case HTT_TX_MODE_SWITCH_PUSH_PULL: 3580 break; 3581 default: 3582 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n", 3583 mode); 3584 return; 3585 } 3586 3587 if (!enable) 3588 return; 3589 3590 ar->htt.tx_q_state.enabled = enable; 3591 ar->htt.tx_q_state.mode = mode; 3592 ar->htt.tx_q_state.num_push_allowed = threshold; 3593 3594 rcu_read_lock(); 3595 3596 for (i = 0; i < num_records; i++) { 3597 record = &resp->tx_mode_switch_ind.records[i]; 3598 info0 = le16_to_cpu(record->info0); 3599 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID); 3600 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID); 3601 3602 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 3603 unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 3604 ath10k_warn(ar, "received out of range peer_id %u tid %u\n", 3605 peer_id, tid); 3606 continue; 3607 } 3608 3609 spin_lock_bh(&ar->data_lock); 3610 txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 3611 spin_unlock_bh(&ar->data_lock); 3612 3613 /* It is okay to release the lock and use txq because RCU read 3614 * lock is held. 3615 */ 3616 3617 if (unlikely(!txq)) { 3618 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", 3619 peer_id, tid); 3620 continue; 3621 } 3622 3623 spin_lock_bh(&ar->htt.tx_lock); 3624 artxq = (void *)txq->drv_priv; 3625 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus); 3626 spin_unlock_bh(&ar->htt.tx_lock); 3627 } 3628 3629 rcu_read_unlock(); 3630 3631 ath10k_mac_tx_push_pending(ar); 3632} 3633 3634void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 3635{ 3636 bool release; 3637 3638 release = ath10k_htt_t2h_msg_handler(ar, skb); 3639 3640 /* Free the indication buffer */ 3641 if (release) 3642 dev_kfree_skb_any(skb); 3643} 3644 3645static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate) 3646{ 3647 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, 3648 18, 24, 36, 48, 54}; 3649 int i; 3650 3651 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { 3652 if (rate == legacy_rates[i]) 3653 return i; 3654 } 3655 3656 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate); 3657 return -EINVAL; 3658} 3659 3660static void 3661ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar, 3662 struct ath10k_sta *arsta, 3663 struct ath10k_per_peer_tx_stats *pstats, 3664 s8 legacy_rate_idx) 3665{ 3666 struct rate_info *txrate = &arsta->txrate; 3667 struct ath10k_htt_tx_stats *tx_stats; 3668 int idx, ht_idx, gi, mcs, bw, nss; 3669 unsigned long flags; 3670 3671 if (!arsta->tx_stats) 3672 return; 3673 3674 tx_stats = arsta->tx_stats; 3675 flags = txrate->flags; 3676 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags); 3677 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode); 3678 bw = txrate->bw; 3679 nss = txrate->nss; 3680 ht_idx = mcs + (nss - 1) * 8; 3681 idx = mcs * 8 + 8 * 10 * (nss - 1); 3682 idx += bw * 2 + gi; 3683 3684#define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name] 3685 3686 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) { 3687 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes; 3688 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts; 3689 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes; 3690 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts; 3691 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes; 3692 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts; 3693 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3694 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes; 3695 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts; 3696 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes; 3697 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts; 3698 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes; 3699 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts; 3700 } else { 3701 mcs = legacy_rate_idx; 3702 3703 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes; 3704 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts; 3705 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes; 3706 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts; 3707 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes; 3708 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts; 3709 } 3710 3711 if (ATH10K_HW_AMPDU(pstats->flags)) { 3712 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags); 3713 3714 if (txrate->flags & RATE_INFO_FLAGS_MCS) { 3715 STATS_OP_FMT(AMPDU).ht[0][ht_idx] += 3716 pstats->succ_bytes + pstats->retry_bytes; 3717 STATS_OP_FMT(AMPDU).ht[1][ht_idx] += 3718 pstats->succ_pkts + pstats->retry_pkts; 3719 } else { 3720 STATS_OP_FMT(AMPDU).vht[0][mcs] += 3721 pstats->succ_bytes + pstats->retry_bytes; 3722 STATS_OP_FMT(AMPDU).vht[1][mcs] += 3723 pstats->succ_pkts + pstats->retry_pkts; 3724 } 3725 STATS_OP_FMT(AMPDU).bw[0][bw] += 3726 pstats->succ_bytes + pstats->retry_bytes; 3727 STATS_OP_FMT(AMPDU).nss[0][nss - 1] += 3728 pstats->succ_bytes + pstats->retry_bytes; 3729 STATS_OP_FMT(AMPDU).gi[0][gi] += 3730 pstats->succ_bytes + pstats->retry_bytes; 3731 STATS_OP_FMT(AMPDU).rate_table[0][idx] += 3732 pstats->succ_bytes + pstats->retry_bytes; 3733 STATS_OP_FMT(AMPDU).bw[1][bw] += 3734 pstats->succ_pkts + pstats->retry_pkts; 3735 STATS_OP_FMT(AMPDU).nss[1][nss - 1] += 3736 pstats->succ_pkts + pstats->retry_pkts; 3737 STATS_OP_FMT(AMPDU).gi[1][gi] += 3738 pstats->succ_pkts + pstats->retry_pkts; 3739 STATS_OP_FMT(AMPDU).rate_table[1][idx] += 3740 pstats->succ_pkts + pstats->retry_pkts; 3741 } else { 3742 tx_stats->ack_fails += 3743 ATH10K_HW_BA_FAIL(pstats->flags); 3744 } 3745 3746 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes; 3747 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes; 3748 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes; 3749 3750 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts; 3751 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts; 3752 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts; 3753 3754 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes; 3755 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes; 3756 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes; 3757 3758 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts; 3759 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts; 3760 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts; 3761 3762 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes; 3763 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes; 3764 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes; 3765 3766 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts; 3767 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts; 3768 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts; 3769 3770 if (txrate->flags >= RATE_INFO_FLAGS_MCS) { 3771 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes; 3772 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts; 3773 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes; 3774 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts; 3775 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes; 3776 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts; 3777 } 3778 3779 tx_stats->tx_duration += pstats->duration; 3780} 3781 3782static void 3783ath10k_update_per_peer_tx_stats(struct ath10k *ar, 3784 struct ieee80211_sta *sta, 3785 struct ath10k_per_peer_tx_stats *peer_stats) 3786{ 3787 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; 3788 struct ieee80211_chanctx_conf *conf = NULL; 3789 u8 rate = 0, sgi; 3790 s8 rate_idx = 0; 3791 bool skip_auto_rate; 3792 struct rate_info txrate; 3793 3794 lockdep_assert_held(&ar->data_lock); 3795 3796 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); 3797 txrate.bw = ATH10K_HW_BW(peer_stats->flags); 3798 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); 3799 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); 3800 sgi = ATH10K_HW_GI(peer_stats->flags); 3801 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags); 3802 3803 /* Firmware's rate control skips broadcast/management frames, 3804 * if host has configure fixed rates and in some other special cases. 3805 */ 3806 if (skip_auto_rate) 3807 return; 3808 3809 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) { 3810 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs); 3811 return; 3812 } 3813 3814 if (txrate.flags == WMI_RATE_PREAMBLE_HT && 3815 (txrate.mcs > 7 || txrate.nss < 1)) { 3816 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats", 3817 txrate.mcs, txrate.nss); 3818 return; 3819 } 3820 3821 memset(&arsta->txrate, 0, sizeof(arsta->txrate)); 3822 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status)); 3823 if (txrate.flags == WMI_RATE_PREAMBLE_CCK || 3824 txrate.flags == WMI_RATE_PREAMBLE_OFDM) { 3825 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); 3826 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ 3827 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK) 3828 rate = 5; 3829 rate_idx = ath10k_get_legacy_rate_idx(ar, rate); 3830 if (rate_idx < 0) 3831 return; 3832 arsta->txrate.legacy = rate; 3833 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { 3834 arsta->txrate.flags = RATE_INFO_FLAGS_MCS; 3835 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1); 3836 } else { 3837 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; 3838 arsta->txrate.mcs = txrate.mcs; 3839 } 3840 3841 switch (txrate.flags) { 3842 case WMI_RATE_PREAMBLE_OFDM: 3843 if (arsta->arvif && arsta->arvif->vif) 3844 conf = rcu_dereference(arsta->arvif->vif->bss_conf.chanctx_conf); 3845 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ) 3846 arsta->tx_info.status.rates[0].idx = rate_idx - 4; 3847 break; 3848 case WMI_RATE_PREAMBLE_CCK: 3849 arsta->tx_info.status.rates[0].idx = rate_idx; 3850 if (sgi) 3851 arsta->tx_info.status.rates[0].flags |= 3852 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE | 3853 IEEE80211_TX_RC_SHORT_GI); 3854 break; 3855 case WMI_RATE_PREAMBLE_HT: 3856 arsta->tx_info.status.rates[0].idx = 3857 txrate.mcs + ((txrate.nss - 1) * 8); 3858 if (sgi) 3859 arsta->tx_info.status.rates[0].flags |= 3860 IEEE80211_TX_RC_SHORT_GI; 3861 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS; 3862 break; 3863 case WMI_RATE_PREAMBLE_VHT: 3864 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0], 3865 txrate.mcs, txrate.nss); 3866 if (sgi) 3867 arsta->tx_info.status.rates[0].flags |= 3868 IEEE80211_TX_RC_SHORT_GI; 3869 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS; 3870 break; 3871 } 3872 3873 arsta->txrate.nss = txrate.nss; 3874 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw); 3875 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate); 3876 if (sgi) 3877 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 3878 3879 switch (arsta->txrate.bw) { 3880 case RATE_INFO_BW_40: 3881 arsta->tx_info.status.rates[0].flags |= 3882 IEEE80211_TX_RC_40_MHZ_WIDTH; 3883 break; 3884 case RATE_INFO_BW_80: 3885 arsta->tx_info.status.rates[0].flags |= 3886 IEEE80211_TX_RC_80_MHZ_WIDTH; 3887 break; 3888 case RATE_INFO_BW_160: 3889 arsta->tx_info.status.rates[0].flags |= 3890 IEEE80211_TX_RC_160_MHZ_WIDTH; 3891 break; 3892 } 3893 3894 if (peer_stats->succ_pkts) { 3895 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK; 3896 arsta->tx_info.status.rates[0].count = 1; 3897 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info); 3898 } 3899 3900 if (ar->htt.disable_tx_comp) { 3901 arsta->tx_failed += peer_stats->failed_pkts; 3902 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n", 3903 arsta->tx_failed); 3904 } 3905 3906 arsta->tx_retries += peer_stats->retry_pkts; 3907 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries); 3908 3909 if (ath10k_debug_is_extd_tx_stats_enabled(ar)) 3910 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats, 3911 rate_idx); 3912} 3913 3914static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, 3915 struct sk_buff *skb) 3916{ 3917 struct htt_resp *resp = (struct htt_resp *)skb->data; 3918 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3919 struct htt_per_peer_tx_stats_ind *tx_stats; 3920 struct ieee80211_sta *sta; 3921 struct ath10k_peer *peer; 3922 int peer_id, i; 3923 u8 ppdu_len, num_ppdu; 3924 3925 num_ppdu = resp->peer_tx_stats.num_ppdu; 3926 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); 3927 3928 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { 3929 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); 3930 return; 3931 } 3932 3933 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3934 (resp->peer_tx_stats.payload); 3935 peer_id = __le16_to_cpu(tx_stats->peer_id); 3936 3937 rcu_read_lock(); 3938 spin_lock_bh(&ar->data_lock); 3939 peer = ath10k_peer_find_by_id(ar, peer_id); 3940 if (!peer || !peer->sta) { 3941 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n", 3942 peer_id); 3943 goto out; 3944 } 3945 3946 sta = peer->sta; 3947 for (i = 0; i < num_ppdu; i++) { 3948 tx_stats = (struct htt_per_peer_tx_stats_ind *) 3949 (resp->peer_tx_stats.payload + i * ppdu_len); 3950 3951 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); 3952 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); 3953 p_tx_stats->failed_bytes = 3954 __le32_to_cpu(tx_stats->failed_bytes); 3955 p_tx_stats->ratecode = tx_stats->ratecode; 3956 p_tx_stats->flags = tx_stats->flags; 3957 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); 3958 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); 3959 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); 3960 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration); 3961 3962 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 3963 } 3964 3965out: 3966 spin_unlock_bh(&ar->data_lock); 3967 rcu_read_unlock(); 3968} 3969 3970static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data) 3971{ 3972 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data; 3973 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 3974 struct ath10k_10_2_peer_tx_stats *tx_stats; 3975 struct ieee80211_sta *sta; 3976 struct ath10k_peer *peer; 3977 u16 log_type = __le16_to_cpu(hdr->log_type); 3978 u32 peer_id = 0, i; 3979 3980 if (log_type != ATH_PKTLOG_TYPE_TX_STAT) 3981 return; 3982 3983 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) + 3984 ATH10K_10_2_TX_STATS_OFFSET); 3985 3986 if (!tx_stats->tx_ppdu_cnt) 3987 return; 3988 3989 peer_id = tx_stats->peer_id; 3990 3991 rcu_read_lock(); 3992 spin_lock_bh(&ar->data_lock); 3993 peer = ath10k_peer_find_by_id(ar, peer_id); 3994 if (!peer || !peer->sta) { 3995 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n", 3996 peer_id); 3997 goto out; 3998 } 3999 4000 sta = peer->sta; 4001 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) { 4002 p_tx_stats->succ_bytes = 4003 __le16_to_cpu(tx_stats->success_bytes[i]); 4004 p_tx_stats->retry_bytes = 4005 __le16_to_cpu(tx_stats->retry_bytes[i]); 4006 p_tx_stats->failed_bytes = 4007 __le16_to_cpu(tx_stats->failed_bytes[i]); 4008 p_tx_stats->ratecode = tx_stats->ratecode[i]; 4009 p_tx_stats->flags = tx_stats->flags[i]; 4010 p_tx_stats->succ_pkts = tx_stats->success_pkts[i]; 4011 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i]; 4012 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i]; 4013 4014 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 4015 } 4016 spin_unlock_bh(&ar->data_lock); 4017 rcu_read_unlock(); 4018 4019 return; 4020 4021out: 4022 spin_unlock_bh(&ar->data_lock); 4023 rcu_read_unlock(); 4024} 4025 4026static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type) 4027{ 4028 switch (sec_type) { 4029 case HTT_SECURITY_TKIP: 4030 case HTT_SECURITY_TKIP_NOMIC: 4031 case HTT_SECURITY_AES_CCMP: 4032 return 48; 4033 default: 4034 return 0; 4035 } 4036} 4037 4038static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar, 4039 struct htt_security_indication *ev) 4040{ 4041 enum htt_txrx_sec_cast_type sec_index; 4042 enum htt_security_types sec_type; 4043 struct ath10k_peer *peer; 4044 4045 spin_lock_bh(&ar->data_lock); 4046 4047 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id)); 4048 if (!peer) { 4049 ath10k_warn(ar, "failed to find peer id %d for security indication", 4050 __le16_to_cpu(ev->peer_id)); 4051 goto out; 4052 } 4053 4054 sec_type = MS(ev->flags, HTT_SECURITY_TYPE); 4055 4056 if (ev->flags & HTT_SECURITY_IS_UNICAST) 4057 sec_index = HTT_TXRX_SEC_UCAST; 4058 else 4059 sec_index = HTT_TXRX_SEC_MCAST; 4060 4061 peer->rx_pn[sec_index].sec_type = sec_type; 4062 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type); 4063 4064 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid)); 4065 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn)); 4066 4067out: 4068 spin_unlock_bh(&ar->data_lock); 4069} 4070 4071bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 4072{ 4073 struct ath10k_htt *htt = &ar->htt; 4074 struct htt_resp *resp = (struct htt_resp *)skb->data; 4075 enum htt_t2h_msg_type type; 4076 4077 /* confirm alignment */ 4078 if (!IS_ALIGNED((unsigned long)skb->data, 4)) 4079 ath10k_warn(ar, "unaligned htt message, expect trouble\n"); 4080 4081 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n", 4082 resp->hdr.msg_type); 4083 4084 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) { 4085 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X", 4086 resp->hdr.msg_type, ar->htt.t2h_msg_types_max); 4087 return true; 4088 } 4089 type = ar->htt.t2h_msg_types[resp->hdr.msg_type]; 4090 4091 switch (type) { 4092 case HTT_T2H_MSG_TYPE_VERSION_CONF: { 4093 htt->target_version_major = resp->ver_resp.major; 4094 htt->target_version_minor = resp->ver_resp.minor; 4095 complete(&htt->target_version_received); 4096 break; 4097 } 4098 case HTT_T2H_MSG_TYPE_RX_IND: 4099 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) { 4100 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind); 4101 } else { 4102 skb_queue_tail(&htt->rx_indication_head, skb); 4103 return false; 4104 } 4105 break; 4106 case HTT_T2H_MSG_TYPE_PEER_MAP: { 4107 struct htt_peer_map_event ev = { 4108 .vdev_id = resp->peer_map.vdev_id, 4109 .peer_id = __le16_to_cpu(resp->peer_map.peer_id), 4110 }; 4111 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr)); 4112 ath10k_peer_map_event(htt, &ev); 4113 break; 4114 } 4115 case HTT_T2H_MSG_TYPE_PEER_UNMAP: { 4116 struct htt_peer_unmap_event ev = { 4117 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id), 4118 }; 4119 ath10k_peer_unmap_event(htt, &ev); 4120 break; 4121 } 4122 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: { 4123 struct htt_tx_done tx_done = {}; 4124 struct ath10k_htt *htt = &ar->htt; 4125 struct ath10k_htc *htc = &ar->htc; 4126 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4127 int status = __le32_to_cpu(resp->mgmt_tx_completion.status); 4128 int info = __le32_to_cpu(resp->mgmt_tx_completion.info); 4129 4130 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); 4131 4132 switch (status) { 4133 case HTT_MGMT_TX_STATUS_OK: 4134 tx_done.status = HTT_TX_COMPL_STATE_ACK; 4135 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, 4136 ar->wmi.svc_map) && 4137 (resp->mgmt_tx_completion.flags & 4138 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) { 4139 tx_done.ack_rssi = 4140 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK, 4141 info); 4142 } 4143 break; 4144 case HTT_MGMT_TX_STATUS_RETRY: 4145 tx_done.status = HTT_TX_COMPL_STATE_NOACK; 4146 break; 4147 case HTT_MGMT_TX_STATUS_DROP: 4148 tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 4149 break; 4150 } 4151 4152 if (htt->disable_tx_comp) { 4153 spin_lock_bh(&htc->tx_lock); 4154 ep->tx_credits++; 4155 spin_unlock_bh(&htc->tx_lock); 4156 } 4157 4158 status = ath10k_txrx_tx_unref(htt, &tx_done); 4159 if (!status) { 4160 spin_lock_bh(&htt->tx_lock); 4161 ath10k_htt_tx_mgmt_dec_pending(htt); 4162 spin_unlock_bh(&htt->tx_lock); 4163 } 4164 break; 4165 } 4166 case HTT_T2H_MSG_TYPE_TX_COMPL_IND: 4167 ath10k_htt_rx_tx_compl_ind(htt->ar, skb); 4168 break; 4169 case HTT_T2H_MSG_TYPE_SEC_IND: { 4170 struct ath10k *ar = htt->ar; 4171 struct htt_security_indication *ev = &resp->security_indication; 4172 4173 ath10k_htt_rx_sec_ind_handler(ar, ev); 4174 ath10k_dbg(ar, ATH10K_DBG_HTT, 4175 "sec ind peer_id %d unicast %d type %d\n", 4176 __le16_to_cpu(ev->peer_id), 4177 !!(ev->flags & HTT_SECURITY_IS_UNICAST), 4178 MS(ev->flags, HTT_SECURITY_TYPE)); 4179 complete(&ar->install_key_done); 4180 break; 4181 } 4182 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: { 4183 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4184 skb->data, skb->len); 4185 atomic_inc(&htt->num_mpdus_ready); 4186 4187 return ath10k_htt_rx_proc_rx_frag_ind(htt, 4188 &resp->rx_frag_ind, 4189 skb); 4190 } 4191 case HTT_T2H_MSG_TYPE_TEST: 4192 break; 4193 case HTT_T2H_MSG_TYPE_STATS_CONF: 4194 trace_ath10k_htt_stats(ar, skb->data, skb->len); 4195 break; 4196 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND: 4197 /* Firmware can return tx frames if it's unable to fully 4198 * process them and suspects host may be able to fix it. ath10k 4199 * sends all tx frames as already inspected so this shouldn't 4200 * happen unless fw has a bug. 4201 */ 4202 ath10k_warn(ar, "received an unexpected htt tx inspect event\n"); 4203 break; 4204 case HTT_T2H_MSG_TYPE_RX_ADDBA: 4205 ath10k_htt_rx_addba(ar, resp); 4206 break; 4207 case HTT_T2H_MSG_TYPE_RX_DELBA: 4208 ath10k_htt_rx_delba(ar, resp); 4209 break; 4210 case HTT_T2H_MSG_TYPE_PKTLOG: { 4211 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload, 4212 skb->len - 4213 offsetof(struct htt_resp, 4214 pktlog_msg.payload)); 4215 4216 if (ath10k_peer_stats_enabled(ar)) 4217 ath10k_fetch_10_2_tx_stats(ar, 4218 resp->pktlog_msg.payload); 4219 break; 4220 } 4221 case HTT_T2H_MSG_TYPE_RX_FLUSH: { 4222 /* Ignore this event because mac80211 takes care of Rx 4223 * aggregation reordering. 4224 */ 4225 break; 4226 } 4227 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: { 4228 skb_queue_tail(&htt->rx_in_ord_compl_q, skb); 4229 return false; 4230 } 4231 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: { 4232 struct ath10k_htt *htt = &ar->htt; 4233 struct ath10k_htc *htc = &ar->htc; 4234 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; 4235 u32 msg_word = __le32_to_cpu(*(__le32 *)resp); 4236 int htt_credit_delta; 4237 4238 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word); 4239 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word)) 4240 htt_credit_delta = -htt_credit_delta; 4241 4242 ath10k_dbg(ar, ATH10K_DBG_HTT, 4243 "htt credit update delta %d\n", 4244 htt_credit_delta); 4245 4246 if (htt->disable_tx_comp) { 4247 spin_lock_bh(&htc->tx_lock); 4248 ep->tx_credits += htt_credit_delta; 4249 spin_unlock_bh(&htc->tx_lock); 4250 ath10k_dbg(ar, ATH10K_DBG_HTT, 4251 "htt credit total %d\n", 4252 ep->tx_credits); 4253 ep->ep_ops.ep_tx_credits(htc->ar); 4254 } 4255 break; 4256 } 4257 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: { 4258 u32 phymode = __le32_to_cpu(resp->chan_change.phymode); 4259 u32 freq = __le32_to_cpu(resp->chan_change.freq); 4260 4261 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq); 4262 ath10k_dbg(ar, ATH10K_DBG_HTT, 4263 "htt chan change freq %u phymode %s\n", 4264 freq, ath10k_wmi_phymode_str(phymode)); 4265 break; 4266 } 4267 case HTT_T2H_MSG_TYPE_AGGR_CONF: 4268 break; 4269 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: { 4270 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC); 4271 4272 if (!tx_fetch_ind) { 4273 ath10k_warn(ar, "failed to copy htt tx fetch ind\n"); 4274 break; 4275 } 4276 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind); 4277 break; 4278 } 4279 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM: 4280 ath10k_htt_rx_tx_fetch_confirm(ar, skb); 4281 break; 4282 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: 4283 ath10k_htt_rx_tx_mode_switch_ind(ar, skb); 4284 break; 4285 case HTT_T2H_MSG_TYPE_PEER_STATS: 4286 ath10k_htt_fetch_peer_stats(ar, skb); 4287 break; 4288 case HTT_T2H_MSG_TYPE_EN_STATS: 4289 default: 4290 ath10k_warn(ar, "htt event (%d) not handled\n", 4291 resp->hdr.msg_type); 4292 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 4293 skb->data, skb->len); 4294 break; 4295 } 4296 return true; 4297} 4298EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler); 4299 4300void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, 4301 struct sk_buff *skb) 4302{ 4303 trace_ath10k_htt_pktlog(ar, skb->data, skb->len); 4304 dev_kfree_skb_any(skb); 4305} 4306EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler); 4307 4308static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget) 4309{ 4310 struct sk_buff *skb; 4311 4312 while (quota < budget) { 4313 if (skb_queue_empty(&ar->htt.rx_msdus_q)) 4314 break; 4315 4316 skb = skb_dequeue(&ar->htt.rx_msdus_q); 4317 if (!skb) 4318 break; 4319 ath10k_process_rx(ar, skb); 4320 quota++; 4321 } 4322 4323 return quota; 4324} 4325 4326int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget) 4327{ 4328 struct htt_resp *resp; 4329 struct ath10k_htt *htt = &ar->htt; 4330 struct sk_buff *skb; 4331 bool release; 4332 int quota; 4333 4334 for (quota = 0; quota < budget; quota++) { 4335 skb = skb_dequeue(&htt->rx_indication_head); 4336 if (!skb) 4337 break; 4338 4339 resp = (struct htt_resp *)skb->data; 4340 4341 release = ath10k_htt_rx_proc_rx_ind_hl(htt, 4342 &resp->rx_ind_hl, 4343 skb, 4344 HTT_RX_PN_CHECK, 4345 HTT_RX_NON_TKIP_MIC); 4346 4347 if (release) 4348 dev_kfree_skb_any(skb); 4349 4350 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n", 4351 skb_queue_len(&htt->rx_indication_head)); 4352 } 4353 return quota; 4354} 4355EXPORT_SYMBOL(ath10k_htt_rx_hl_indication); 4356 4357int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) 4358{ 4359 struct ath10k_htt *htt = &ar->htt; 4360 struct htt_tx_done tx_done = {}; 4361 struct sk_buff_head tx_ind_q; 4362 struct sk_buff *skb; 4363 unsigned long flags; 4364 int quota = 0, done, ret; 4365 bool resched_napi = false; 4366 4367 __skb_queue_head_init(&tx_ind_q); 4368 4369 /* Process pending frames before dequeuing more data 4370 * from hardware. 4371 */ 4372 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4373 if (quota == budget) { 4374 resched_napi = true; 4375 goto exit; 4376 } 4377 4378 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) { 4379 spin_lock_bh(&htt->rx_ring.lock); 4380 ret = ath10k_htt_rx_in_ord_ind(ar, skb); 4381 spin_unlock_bh(&htt->rx_ring.lock); 4382 4383 dev_kfree_skb_any(skb); 4384 if (ret == -EIO) { 4385 resched_napi = true; 4386 goto exit; 4387 } 4388 } 4389 4390 while (atomic_read(&htt->num_mpdus_ready)) { 4391 ret = ath10k_htt_rx_handle_amsdu(htt); 4392 if (ret == -EIO) { 4393 resched_napi = true; 4394 goto exit; 4395 } 4396 atomic_dec(&htt->num_mpdus_ready); 4397 } 4398 4399 /* Deliver received data after processing data from hardware */ 4400 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); 4401 4402 /* From NAPI documentation: 4403 * The napi poll() function may also process TX completions, in which 4404 * case if it processes the entire TX ring then it should count that 4405 * work as the rest of the budget. 4406 */ 4407 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo)) 4408 quota = budget; 4409 4410 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized. 4411 * From kfifo_get() documentation: 4412 * Note that with only one concurrent reader and one concurrent writer, 4413 * you don't need extra locking to use these macro. 4414 */ 4415 while (kfifo_get(&htt->txdone_fifo, &tx_done)) 4416 ath10k_txrx_tx_unref(htt, &tx_done); 4417 4418 ath10k_mac_tx_push_pending(ar); 4419 4420 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags); 4421 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q); 4422 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags); 4423 4424 while ((skb = __skb_dequeue(&tx_ind_q))) { 4425 ath10k_htt_rx_tx_fetch_ind(ar, skb); 4426 dev_kfree_skb_any(skb); 4427 } 4428 4429exit: 4430 ath10k_htt_rx_msdu_buff_replenish(htt); 4431 /* In case of rx failure or more data to read, report budget 4432 * to reschedule NAPI poll 4433 */ 4434 done = resched_napi ? budget : quota; 4435 4436 return done; 4437} 4438EXPORT_SYMBOL(ath10k_htt_txrx_compl_task); 4439 4440static const struct ath10k_htt_rx_ops htt_rx_ops_32 = { 4441 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32, 4442 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32, 4443 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32, 4444 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32, 4445 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32, 4446}; 4447 4448static const struct ath10k_htt_rx_ops htt_rx_ops_64 = { 4449 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64, 4450 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64, 4451 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64, 4452 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64, 4453 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64, 4454}; 4455 4456static const struct ath10k_htt_rx_ops htt_rx_ops_hl = { 4457 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl, 4458}; 4459 4460void ath10k_htt_set_rx_ops(struct ath10k_htt *htt) 4461{ 4462 struct ath10k *ar = htt->ar; 4463 4464 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) 4465 htt->rx_ops = &htt_rx_ops_hl; 4466 else if (ar->hw_params.target_64bit) 4467 htt->rx_ops = &htt_rx_ops_64; 4468 else 4469 htt->rx_ops = &htt_rx_ops_32; 4470} 4471