1 /* 2 * Copyright (c) 2016-2020 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include "hal_hw_headers.h" 20 #include "dp_types.h" 21 #include "dp_rx.h" 22 #include "dp_peer.h" 23 #include "hal_rx.h" 24 #include "hal_api.h" 25 #include "qdf_nbuf.h" 26 #ifdef MESH_MODE_SUPPORT 27 #include "if_meta_hdr.h" 28 #endif 29 #include "dp_internal.h" 30 #include "dp_rx_mon.h" 31 #include "dp_ipa.h" 32 #ifdef FEATURE_WDS 33 #include "dp_txrx_wds.h" 34 #endif 35 36 #ifdef ATH_RX_PRI_SAVE 37 #define DP_RX_TID_SAVE(_nbuf, _tid) \ 38 (qdf_nbuf_set_priority(_nbuf, _tid)) 39 #else 40 #define DP_RX_TID_SAVE(_nbuf, _tid) 41 #endif 42 43 #ifdef DP_RX_DISABLE_NDI_MDNS_FORWARDING 44 static inline 45 bool dp_rx_check_ndi_mdns_fwding(struct dp_peer *ta_peer, qdf_nbuf_t nbuf) 46 { 47 if (ta_peer->vdev->opmode == wlan_op_mode_ndi && 48 qdf_nbuf_is_ipv6_mdns_pkt(nbuf)) { 49 DP_STATS_INC(ta_peer, rx.intra_bss.mdns_no_fwd, 1); 50 return false; 51 } 52 return true; 53 } 54 #else 55 static inline 56 bool dp_rx_check_ndi_mdns_fwding(struct dp_peer *ta_peer, qdf_nbuf_t nbuf) 57 { 58 return true; 59 } 60 #endif 61 static inline bool dp_rx_check_ap_bridge(struct dp_vdev *vdev) 62 { 63 return vdev->ap_bridge_enabled; 64 } 65 66 #ifdef DUP_RX_DESC_WAR 67 void dp_rx_dump_info_and_assert(struct dp_soc *soc, 68 hal_ring_handle_t hal_ring, 69 hal_ring_desc_t ring_desc, 70 struct dp_rx_desc *rx_desc) 71 { 72 void *hal_soc = soc->hal_soc; 73 74 hal_srng_dump_ring_desc(hal_soc, hal_ring, ring_desc); 75 dp_rx_desc_dump(rx_desc); 76 } 77 #else 78 void dp_rx_dump_info_and_assert(struct dp_soc *soc, 79 hal_ring_handle_t hal_ring_hdl, 80 hal_ring_desc_t ring_desc, 81 struct dp_rx_desc *rx_desc) 82 { 83 hal_soc_handle_t hal_soc = soc->hal_soc; 84 85 dp_rx_desc_dump(rx_desc); 86 hal_srng_dump_ring_desc(hal_soc, hal_ring_hdl, ring_desc); 87 hal_srng_dump_ring(hal_soc, hal_ring_hdl); 88 qdf_assert_always(0); 89 } 90 #endif 91 92 #ifdef RX_DESC_SANITY_WAR 93 static inline 94 QDF_STATUS dp_rx_desc_sanity(struct dp_soc *soc, hal_soc_handle_t hal_soc, 95 hal_ring_handle_t hal_ring_hdl, 96 hal_ring_desc_t ring_desc, 97 struct dp_rx_desc *rx_desc) 98 { 99 uint8_t return_buffer_manager; 100 101 if (qdf_unlikely(!rx_desc)) { 102 /* 103 * This is an unlikely case where the cookie obtained 104 * from the ring_desc is invalid and hence we are not 105 * able to find the corresponding rx_desc 106 */ 107 goto fail; 108 } 109 110 return_buffer_manager = hal_rx_ret_buf_manager_get(ring_desc); 111 if (qdf_unlikely(!(return_buffer_manager == HAL_RX_BUF_RBM_SW1_BM || 112 return_buffer_manager == HAL_RX_BUF_RBM_SW3_BM))) { 113 goto fail; 114 } 115 116 return QDF_STATUS_SUCCESS; 117 118 fail: 119 DP_STATS_INC(soc, rx.err.invalid_cookie, 1); 120 dp_err("Ring Desc:"); 121 hal_srng_dump_ring_desc(hal_soc, hal_ring_hdl, 122 ring_desc); 123 return QDF_STATUS_E_NULL_VALUE; 124 125 } 126 #else 127 static inline 128 QDF_STATUS dp_rx_desc_sanity(struct dp_soc *soc, hal_soc_handle_t hal_soc, 129 hal_ring_handle_t hal_ring_hdl, 130 hal_ring_desc_t ring_desc, 131 struct dp_rx_desc *rx_desc) 132 { 133 return QDF_STATUS_SUCCESS; 134 } 135 #endif 136 137 /* 138 * dp_rx_buffers_replenish() - replenish rxdma ring with rx nbufs 139 * called during dp rx initialization 140 * and at the end of dp_rx_process. 141 * 142 * @soc: core txrx main context 143 * @mac_id: mac_id which is one of 3 mac_ids 144 * @dp_rxdma_srng: dp rxdma circular ring 145 * @rx_desc_pool: Pointer to free Rx descriptor pool 146 * @num_req_buffers: number of buffer to be replenished 147 * @desc_list: list of descs if called from dp_rx_process 148 * or NULL during dp rx initialization or out of buffer 149 * interrupt. 150 * @tail: tail of descs list 151 * @func_name: name of the caller function 152 * Return: return success or failure 153 */ 154 QDF_STATUS __dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id, 155 struct dp_srng *dp_rxdma_srng, 156 struct rx_desc_pool *rx_desc_pool, 157 uint32_t num_req_buffers, 158 union dp_rx_desc_list_elem_t **desc_list, 159 union dp_rx_desc_list_elem_t **tail, 160 const char *func_name) 161 { 162 uint32_t num_alloc_desc; 163 uint16_t num_desc_to_free = 0; 164 struct dp_pdev *dp_pdev = dp_get_pdev_for_lmac_id(dp_soc, mac_id); 165 uint32_t num_entries_avail; 166 uint32_t count; 167 int sync_hw_ptr = 1; 168 qdf_dma_addr_t paddr; 169 qdf_nbuf_t rx_netbuf; 170 void *rxdma_ring_entry; 171 union dp_rx_desc_list_elem_t *next; 172 QDF_STATUS ret; 173 uint16_t buf_size = rx_desc_pool->buf_size; 174 uint8_t buf_alignment = rx_desc_pool->buf_alignment; 175 176 void *rxdma_srng; 177 178 rxdma_srng = dp_rxdma_srng->hal_srng; 179 180 if (!rxdma_srng) { 181 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 182 "rxdma srng not initialized"); 183 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 184 return QDF_STATUS_E_FAILURE; 185 } 186 187 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 188 "requested %d buffers for replenish", num_req_buffers); 189 190 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 191 num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc, 192 rxdma_srng, 193 sync_hw_ptr); 194 195 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 196 "no of available entries in rxdma ring: %d", 197 num_entries_avail); 198 199 if (!(*desc_list) && (num_entries_avail > 200 ((dp_rxdma_srng->num_entries * 3) / 4))) { 201 num_req_buffers = num_entries_avail; 202 } else if (num_entries_avail < num_req_buffers) { 203 num_desc_to_free = num_req_buffers - num_entries_avail; 204 num_req_buffers = num_entries_avail; 205 } 206 207 if (qdf_unlikely(!num_req_buffers)) { 208 num_desc_to_free = num_req_buffers; 209 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 210 goto free_descs; 211 } 212 213 /* 214 * if desc_list is NULL, allocate the descs from freelist 215 */ 216 if (!(*desc_list)) { 217 num_alloc_desc = dp_rx_get_free_desc_list(dp_soc, mac_id, 218 rx_desc_pool, 219 num_req_buffers, 220 desc_list, 221 tail); 222 223 if (!num_alloc_desc) { 224 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 225 "no free rx_descs in freelist"); 226 DP_STATS_INC(dp_pdev, err.desc_alloc_fail, 227 num_req_buffers); 228 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 229 return QDF_STATUS_E_NOMEM; 230 } 231 232 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 233 "%d rx desc allocated", num_alloc_desc); 234 num_req_buffers = num_alloc_desc; 235 } 236 237 238 count = 0; 239 240 while (count < num_req_buffers) { 241 rx_netbuf = qdf_nbuf_alloc(dp_soc->osdev, 242 buf_size, 243 RX_BUFFER_RESERVATION, 244 buf_alignment, 245 FALSE); 246 247 if (qdf_unlikely(!rx_netbuf)) { 248 DP_STATS_INC(dp_pdev, replenish.nbuf_alloc_fail, 1); 249 break; 250 } 251 252 ret = qdf_nbuf_map_nbytes_single(dp_soc->osdev, rx_netbuf, 253 QDF_DMA_FROM_DEVICE, buf_size); 254 255 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 256 qdf_nbuf_free(rx_netbuf); 257 DP_STATS_INC(dp_pdev, replenish.map_err, 1); 258 continue; 259 } 260 261 paddr = qdf_nbuf_get_frag_paddr(rx_netbuf, 0); 262 263 dp_ipa_handle_rx_buf_smmu_mapping(dp_soc, rx_netbuf, true); 264 /* 265 * check if the physical address of nbuf->data is 266 * less then 0x50000000 then free the nbuf and try 267 * allocating new nbuf. We can try for 100 times. 268 * this is a temp WAR till we fix it properly. 269 */ 270 ret = check_x86_paddr(dp_soc, &rx_netbuf, &paddr, rx_desc_pool); 271 if (ret == QDF_STATUS_E_FAILURE) { 272 DP_STATS_INC(dp_pdev, replenish.x86_fail, 1); 273 break; 274 } 275 276 count++; 277 278 rxdma_ring_entry = hal_srng_src_get_next(dp_soc->hal_soc, 279 rxdma_srng); 280 qdf_assert_always(rxdma_ring_entry); 281 282 next = (*desc_list)->next; 283 284 dp_rx_desc_prep(&((*desc_list)->rx_desc), rx_netbuf); 285 286 /* rx_desc.in_use should be zero at this time*/ 287 qdf_assert_always((*desc_list)->rx_desc.in_use == 0); 288 289 (*desc_list)->rx_desc.in_use = 1; 290 dp_rx_desc_update_dbg_info(&(*desc_list)->rx_desc, 291 func_name, RX_DESC_REPLENISHED); 292 dp_verbose_debug("rx_netbuf=%pK, buf=%pK, paddr=0x%llx, cookie=%d", 293 rx_netbuf, qdf_nbuf_data(rx_netbuf), 294 (unsigned long long)paddr, 295 (*desc_list)->rx_desc.cookie); 296 297 hal_rxdma_buff_addr_info_set(rxdma_ring_entry, paddr, 298 (*desc_list)->rx_desc.cookie, 299 rx_desc_pool->owner); 300 301 *desc_list = next; 302 303 } 304 305 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 306 307 dp_verbose_debug("replenished buffers %d, rx desc added back to free list %u", 308 count, num_desc_to_free); 309 310 /* No need to count the number of bytes received during replenish. 311 * Therefore set replenish.pkts.bytes as 0. 312 */ 313 DP_STATS_INC_PKT(dp_pdev, replenish.pkts, count, 0); 314 315 free_descs: 316 DP_STATS_INC(dp_pdev, buf_freelist, num_desc_to_free); 317 /* 318 * add any available free desc back to the free list 319 */ 320 if (*desc_list) 321 dp_rx_add_desc_list_to_free_list(dp_soc, desc_list, tail, 322 mac_id, rx_desc_pool); 323 324 return QDF_STATUS_SUCCESS; 325 } 326 327 /* 328 * dp_rx_deliver_raw() - process RAW mode pkts and hand over the 329 * pkts to RAW mode simulation to 330 * decapsulate the pkt. 331 * 332 * @vdev: vdev on which RAW mode is enabled 333 * @nbuf_list: list of RAW pkts to process 334 * @peer: peer object from which the pkt is rx 335 * 336 * Return: void 337 */ 338 void 339 dp_rx_deliver_raw(struct dp_vdev *vdev, qdf_nbuf_t nbuf_list, 340 struct dp_peer *peer) 341 { 342 qdf_nbuf_t deliver_list_head = NULL; 343 qdf_nbuf_t deliver_list_tail = NULL; 344 qdf_nbuf_t nbuf; 345 346 nbuf = nbuf_list; 347 while (nbuf) { 348 qdf_nbuf_t next = qdf_nbuf_next(nbuf); 349 350 DP_RX_LIST_APPEND(deliver_list_head, deliver_list_tail, nbuf); 351 352 DP_STATS_INC(vdev->pdev, rx_raw_pkts, 1); 353 DP_STATS_INC_PKT(peer, rx.raw, 1, qdf_nbuf_len(nbuf)); 354 /* 355 * reset the chfrag_start and chfrag_end bits in nbuf cb 356 * as this is a non-amsdu pkt and RAW mode simulation expects 357 * these bit s to be 0 for non-amsdu pkt. 358 */ 359 if (qdf_nbuf_is_rx_chfrag_start(nbuf) && 360 qdf_nbuf_is_rx_chfrag_end(nbuf)) { 361 qdf_nbuf_set_rx_chfrag_start(nbuf, 0); 362 qdf_nbuf_set_rx_chfrag_end(nbuf, 0); 363 } 364 365 nbuf = next; 366 } 367 368 vdev->osif_rsim_rx_decap(vdev->osif_vdev, &deliver_list_head, 369 &deliver_list_tail, peer->mac_addr.raw); 370 371 vdev->osif_rx(vdev->osif_vdev, deliver_list_head); 372 } 373 374 375 #ifdef DP_LFR 376 /* 377 * In case of LFR, data of a new peer might be sent up 378 * even before peer is added. 379 */ 380 static inline struct dp_vdev * 381 dp_get_vdev_from_peer(struct dp_soc *soc, 382 uint16_t peer_id, 383 struct dp_peer *peer, 384 struct hal_rx_mpdu_desc_info mpdu_desc_info) 385 { 386 struct dp_vdev *vdev; 387 uint8_t vdev_id; 388 389 if (unlikely(!peer)) { 390 if (peer_id != HTT_INVALID_PEER) { 391 vdev_id = DP_PEER_METADATA_VDEV_ID_GET( 392 mpdu_desc_info.peer_meta_data); 393 QDF_TRACE(QDF_MODULE_ID_DP, 394 QDF_TRACE_LEVEL_DEBUG, 395 FL("PeerID %d not found use vdevID %d"), 396 peer_id, vdev_id); 397 vdev = dp_get_vdev_from_soc_vdev_id_wifi3(soc, 398 vdev_id); 399 } else { 400 QDF_TRACE(QDF_MODULE_ID_DP, 401 QDF_TRACE_LEVEL_DEBUG, 402 FL("Invalid PeerID %d"), 403 peer_id); 404 return NULL; 405 } 406 } else { 407 vdev = peer->vdev; 408 } 409 return vdev; 410 } 411 #else 412 static inline struct dp_vdev * 413 dp_get_vdev_from_peer(struct dp_soc *soc, 414 uint16_t peer_id, 415 struct dp_peer *peer, 416 struct hal_rx_mpdu_desc_info mpdu_desc_info) 417 { 418 if (unlikely(!peer)) { 419 QDF_TRACE(QDF_MODULE_ID_DP, 420 QDF_TRACE_LEVEL_DEBUG, 421 FL("Peer not found for peerID %d"), 422 peer_id); 423 return NULL; 424 } else { 425 return peer->vdev; 426 } 427 } 428 #endif 429 430 #ifndef FEATURE_WDS 431 static void 432 dp_rx_da_learn(struct dp_soc *soc, 433 uint8_t *rx_tlv_hdr, 434 struct dp_peer *ta_peer, 435 qdf_nbuf_t nbuf) 436 { 437 } 438 #endif 439 /* 440 * dp_rx_intrabss_fwd() - Implements the Intra-BSS forwarding logic 441 * 442 * @soc: core txrx main context 443 * @ta_peer : source peer entry 444 * @rx_tlv_hdr : start address of rx tlvs 445 * @nbuf : nbuf that has to be intrabss forwarded 446 * 447 * Return: bool: true if it is forwarded else false 448 */ 449 static bool 450 dp_rx_intrabss_fwd(struct dp_soc *soc, 451 struct dp_peer *ta_peer, 452 uint8_t *rx_tlv_hdr, 453 qdf_nbuf_t nbuf, 454 struct hal_rx_msdu_metadata msdu_metadata) 455 { 456 uint16_t len; 457 uint8_t is_frag; 458 struct dp_peer *da_peer; 459 struct dp_ast_entry *ast_entry; 460 qdf_nbuf_t nbuf_copy; 461 uint8_t tid = qdf_nbuf_get_tid_val(nbuf); 462 uint8_t ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf); 463 struct cdp_tid_rx_stats *tid_stats = &ta_peer->vdev->pdev->stats. 464 tid_stats.tid_rx_stats[ring_id][tid]; 465 466 /* check if the destination peer is available in peer table 467 * and also check if the source peer and destination peer 468 * belong to the same vap and destination peer is not bss peer. 469 */ 470 471 if ((qdf_nbuf_is_da_valid(nbuf) && !qdf_nbuf_is_da_mcbc(nbuf))) { 472 473 ast_entry = soc->ast_table[msdu_metadata.da_idx]; 474 if (!ast_entry) 475 return false; 476 477 if (ast_entry->type == CDP_TXRX_AST_TYPE_DA) { 478 ast_entry->is_active = TRUE; 479 return false; 480 } 481 482 da_peer = ast_entry->peer; 483 484 if (!da_peer) 485 return false; 486 /* TA peer cannot be same as peer(DA) on which AST is present 487 * this indicates a change in topology and that AST entries 488 * are yet to be updated. 489 */ 490 if (da_peer == ta_peer) 491 return false; 492 493 if (da_peer->vdev == ta_peer->vdev && !da_peer->bss_peer) { 494 len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 495 is_frag = qdf_nbuf_is_frag(nbuf); 496 memset(nbuf->cb, 0x0, sizeof(nbuf->cb)); 497 498 /* If the source or destination peer in the isolation 499 * list then dont forward instead push to bridge stack. 500 */ 501 if (dp_get_peer_isolation(ta_peer) || 502 dp_get_peer_isolation(da_peer)) 503 return false; 504 505 /* linearize the nbuf just before we send to 506 * dp_tx_send() 507 */ 508 if (qdf_unlikely(is_frag)) { 509 if (qdf_nbuf_linearize(nbuf) == -ENOMEM) 510 return false; 511 512 nbuf = qdf_nbuf_unshare(nbuf); 513 if (!nbuf) { 514 DP_STATS_INC_PKT(ta_peer, 515 rx.intra_bss.fail, 516 1, 517 len); 518 /* return true even though the pkt is 519 * not forwarded. Basically skb_unshare 520 * failed and we want to continue with 521 * next nbuf. 522 */ 523 tid_stats->fail_cnt[INTRABSS_DROP]++; 524 return true; 525 } 526 } 527 528 if (!dp_tx_send((struct cdp_soc_t *)soc, 529 ta_peer->vdev->vdev_id, nbuf)) { 530 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.pkts, 1, 531 len); 532 return true; 533 } else { 534 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.fail, 1, 535 len); 536 tid_stats->fail_cnt[INTRABSS_DROP]++; 537 return false; 538 } 539 } 540 } 541 /* if it is a broadcast pkt (eg: ARP) and it is not its own 542 * source, then clone the pkt and send the cloned pkt for 543 * intra BSS forwarding and original pkt up the network stack 544 * Note: how do we handle multicast pkts. do we forward 545 * all multicast pkts as is or let a higher layer module 546 * like igmpsnoop decide whether to forward or not with 547 * Mcast enhancement. 548 */ 549 else if (qdf_unlikely((qdf_nbuf_is_da_mcbc(nbuf) && 550 !ta_peer->bss_peer))) { 551 if (!dp_rx_check_ndi_mdns_fwding(ta_peer, nbuf)) 552 goto end; 553 554 /* If the source peer in the isolation list 555 * then dont forward instead push to bridge stack 556 */ 557 if (dp_get_peer_isolation(ta_peer)) 558 goto end; 559 560 nbuf_copy = qdf_nbuf_copy(nbuf); 561 if (!nbuf_copy) 562 goto end; 563 564 len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 565 memset(nbuf_copy->cb, 0x0, sizeof(nbuf_copy->cb)); 566 567 /* Set cb->ftype to intrabss FWD */ 568 qdf_nbuf_set_tx_ftype(nbuf_copy, CB_FTYPE_INTRABSS_FWD); 569 if (dp_tx_send((struct cdp_soc_t *)soc, 570 ta_peer->vdev->vdev_id, nbuf_copy)) { 571 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.fail, 1, len); 572 tid_stats->fail_cnt[INTRABSS_DROP]++; 573 qdf_nbuf_free(nbuf_copy); 574 } else { 575 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.pkts, 1, len); 576 tid_stats->intrabss_cnt++; 577 } 578 } 579 580 end: 581 /* return false as we have to still send the original pkt 582 * up the stack 583 */ 584 return false; 585 } 586 587 #ifdef MESH_MODE_SUPPORT 588 589 /** 590 * dp_rx_fill_mesh_stats() - Fills the mesh per packet receive stats 591 * 592 * @vdev: DP Virtual device handle 593 * @nbuf: Buffer pointer 594 * @rx_tlv_hdr: start of rx tlv header 595 * @peer: pointer to peer 596 * 597 * This function allocated memory for mesh receive stats and fill the 598 * required stats. Stores the memory address in skb cb. 599 * 600 * Return: void 601 */ 602 603 void dp_rx_fill_mesh_stats(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 604 uint8_t *rx_tlv_hdr, struct dp_peer *peer) 605 { 606 struct mesh_recv_hdr_s *rx_info = NULL; 607 uint32_t pkt_type; 608 uint32_t nss; 609 uint32_t rate_mcs; 610 uint32_t bw; 611 uint8_t primary_chan_num; 612 uint32_t center_chan_freq; 613 struct dp_soc *soc; 614 615 /* fill recv mesh stats */ 616 rx_info = qdf_mem_malloc(sizeof(struct mesh_recv_hdr_s)); 617 618 /* upper layers are resposible to free this memory */ 619 620 if (!rx_info) { 621 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 622 "Memory allocation failed for mesh rx stats"); 623 DP_STATS_INC(vdev->pdev, mesh_mem_alloc, 1); 624 return; 625 } 626 627 rx_info->rs_flags = MESH_RXHDR_VER1; 628 if (qdf_nbuf_is_rx_chfrag_start(nbuf)) 629 rx_info->rs_flags |= MESH_RX_FIRST_MSDU; 630 631 if (qdf_nbuf_is_rx_chfrag_end(nbuf)) 632 rx_info->rs_flags |= MESH_RX_LAST_MSDU; 633 634 if (hal_rx_attn_msdu_get_is_decrypted(rx_tlv_hdr)) { 635 rx_info->rs_flags |= MESH_RX_DECRYPTED; 636 rx_info->rs_keyix = hal_rx_msdu_get_keyid(rx_tlv_hdr); 637 if (vdev->osif_get_key) 638 vdev->osif_get_key(vdev->osif_vdev, 639 &rx_info->rs_decryptkey[0], 640 &peer->mac_addr.raw[0], 641 rx_info->rs_keyix); 642 } 643 644 rx_info->rs_rssi = hal_rx_msdu_start_get_rssi(rx_tlv_hdr); 645 646 soc = vdev->pdev->soc; 647 primary_chan_num = hal_rx_msdu_start_get_freq(rx_tlv_hdr); 648 center_chan_freq = hal_rx_msdu_start_get_freq(rx_tlv_hdr) >> 16; 649 650 if (soc->cdp_soc.ol_ops && soc->cdp_soc.ol_ops->freq_to_band) { 651 rx_info->rs_band = soc->cdp_soc.ol_ops->freq_to_band( 652 soc->ctrl_psoc, 653 vdev->pdev->pdev_id, 654 center_chan_freq); 655 } 656 rx_info->rs_channel = primary_chan_num; 657 pkt_type = hal_rx_msdu_start_get_pkt_type(rx_tlv_hdr); 658 rate_mcs = hal_rx_msdu_start_rate_mcs_get(rx_tlv_hdr); 659 bw = hal_rx_msdu_start_bw_get(rx_tlv_hdr); 660 nss = hal_rx_msdu_start_nss_get(vdev->pdev->soc->hal_soc, rx_tlv_hdr); 661 rx_info->rs_ratephy1 = rate_mcs | (nss << 0x8) | (pkt_type << 16) | 662 (bw << 24); 663 664 qdf_nbuf_set_rx_fctx_type(nbuf, (void *)rx_info, CB_FTYPE_MESH_RX_INFO); 665 666 QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_INFO_MED, 667 FL("Mesh rx stats: flags %x, rssi %x, chn %x, rate %x, kix %x"), 668 rx_info->rs_flags, 669 rx_info->rs_rssi, 670 rx_info->rs_channel, 671 rx_info->rs_ratephy1, 672 rx_info->rs_keyix); 673 674 } 675 676 /** 677 * dp_rx_filter_mesh_packets() - Filters mesh unwanted packets 678 * 679 * @vdev: DP Virtual device handle 680 * @nbuf: Buffer pointer 681 * @rx_tlv_hdr: start of rx tlv header 682 * 683 * This checks if the received packet is matching any filter out 684 * catogery and and drop the packet if it matches. 685 * 686 * Return: status(0 indicates drop, 1 indicate to no drop) 687 */ 688 689 QDF_STATUS dp_rx_filter_mesh_packets(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 690 uint8_t *rx_tlv_hdr) 691 { 692 union dp_align_mac_addr mac_addr; 693 struct dp_soc *soc = vdev->pdev->soc; 694 695 if (qdf_unlikely(vdev->mesh_rx_filter)) { 696 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_FROMDS) 697 if (hal_rx_mpdu_get_fr_ds(soc->hal_soc, 698 rx_tlv_hdr)) 699 return QDF_STATUS_SUCCESS; 700 701 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_TODS) 702 if (hal_rx_mpdu_get_to_ds(soc->hal_soc, 703 rx_tlv_hdr)) 704 return QDF_STATUS_SUCCESS; 705 706 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_NODS) 707 if (!hal_rx_mpdu_get_fr_ds(soc->hal_soc, 708 rx_tlv_hdr) && 709 !hal_rx_mpdu_get_to_ds(soc->hal_soc, 710 rx_tlv_hdr)) 711 return QDF_STATUS_SUCCESS; 712 713 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_RA) { 714 if (hal_rx_mpdu_get_addr1(soc->hal_soc, 715 rx_tlv_hdr, 716 &mac_addr.raw[0])) 717 return QDF_STATUS_E_FAILURE; 718 719 if (!qdf_mem_cmp(&mac_addr.raw[0], 720 &vdev->mac_addr.raw[0], 721 QDF_MAC_ADDR_SIZE)) 722 return QDF_STATUS_SUCCESS; 723 } 724 725 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_TA) { 726 if (hal_rx_mpdu_get_addr2(soc->hal_soc, 727 rx_tlv_hdr, 728 &mac_addr.raw[0])) 729 return QDF_STATUS_E_FAILURE; 730 731 if (!qdf_mem_cmp(&mac_addr.raw[0], 732 &vdev->mac_addr.raw[0], 733 QDF_MAC_ADDR_SIZE)) 734 return QDF_STATUS_SUCCESS; 735 } 736 } 737 738 return QDF_STATUS_E_FAILURE; 739 } 740 741 #else 742 void dp_rx_fill_mesh_stats(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 743 uint8_t *rx_tlv_hdr, struct dp_peer *peer) 744 { 745 } 746 747 QDF_STATUS dp_rx_filter_mesh_packets(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 748 uint8_t *rx_tlv_hdr) 749 { 750 return QDF_STATUS_E_FAILURE; 751 } 752 753 #endif 754 755 #ifdef FEATURE_NAC_RSSI 756 /** 757 * dp_rx_nac_filter(): Function to perform filtering of non-associated 758 * clients 759 * @pdev: DP pdev handle 760 * @rx_pkt_hdr: Rx packet Header 761 * 762 * return: dp_vdev* 763 */ 764 static 765 struct dp_vdev *dp_rx_nac_filter(struct dp_pdev *pdev, 766 uint8_t *rx_pkt_hdr) 767 { 768 struct ieee80211_frame *wh; 769 struct dp_neighbour_peer *peer = NULL; 770 771 wh = (struct ieee80211_frame *)rx_pkt_hdr; 772 773 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) != IEEE80211_FC1_DIR_TODS) 774 return NULL; 775 776 qdf_spin_lock_bh(&pdev->neighbour_peer_mutex); 777 TAILQ_FOREACH(peer, &pdev->neighbour_peers_list, 778 neighbour_peer_list_elem) { 779 if (qdf_mem_cmp(&peer->neighbour_peers_macaddr.raw[0], 780 wh->i_addr2, QDF_MAC_ADDR_SIZE) == 0) { 781 QDF_TRACE( 782 QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 783 FL("NAC configuration matched for mac-%2x:%2x:%2x:%2x:%2x:%2x"), 784 peer->neighbour_peers_macaddr.raw[0], 785 peer->neighbour_peers_macaddr.raw[1], 786 peer->neighbour_peers_macaddr.raw[2], 787 peer->neighbour_peers_macaddr.raw[3], 788 peer->neighbour_peers_macaddr.raw[4], 789 peer->neighbour_peers_macaddr.raw[5]); 790 791 qdf_spin_unlock_bh(&pdev->neighbour_peer_mutex); 792 793 return pdev->monitor_vdev; 794 } 795 } 796 qdf_spin_unlock_bh(&pdev->neighbour_peer_mutex); 797 798 return NULL; 799 } 800 801 /** 802 * dp_rx_process_invalid_peer(): Function to pass invalid peer list to umac 803 * @soc: DP SOC handle 804 * @mpdu: mpdu for which peer is invalid 805 * @mac_id: mac_id which is one of 3 mac_ids(Assuming mac_id and 806 * pool_id has same mapping) 807 * 808 * return: integer type 809 */ 810 uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t mpdu, 811 uint8_t mac_id) 812 { 813 struct dp_invalid_peer_msg msg; 814 struct dp_vdev *vdev = NULL; 815 struct dp_pdev *pdev = NULL; 816 struct ieee80211_frame *wh; 817 qdf_nbuf_t curr_nbuf, next_nbuf; 818 uint8_t *rx_tlv_hdr = qdf_nbuf_data(mpdu); 819 uint8_t *rx_pkt_hdr = hal_rx_pkt_hdr_get(rx_tlv_hdr); 820 821 rx_pkt_hdr = hal_rx_pkt_hdr_get(rx_tlv_hdr); 822 823 if (!HAL_IS_DECAP_FORMAT_RAW(soc->hal_soc, rx_tlv_hdr)) { 824 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 825 "Drop decapped frames"); 826 goto free; 827 } 828 829 wh = (struct ieee80211_frame *)rx_pkt_hdr; 830 831 if (!DP_FRAME_IS_DATA(wh)) { 832 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG, 833 "NAWDS valid only for data frames"); 834 goto free; 835 } 836 837 if (qdf_nbuf_len(mpdu) < sizeof(struct ieee80211_frame)) { 838 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 839 "Invalid nbuf length"); 840 goto free; 841 } 842 843 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 844 845 if (!pdev || qdf_unlikely(pdev->is_pdev_down)) { 846 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 847 "PDEV %s", !pdev ? "not found" : "down"); 848 goto free; 849 } 850 851 if (pdev->filter_neighbour_peers) { 852 /* Next Hop scenario not yet handle */ 853 vdev = dp_rx_nac_filter(pdev, rx_pkt_hdr); 854 if (vdev) { 855 dp_rx_mon_deliver(soc, pdev->pdev_id, 856 pdev->invalid_peer_head_msdu, 857 pdev->invalid_peer_tail_msdu); 858 859 pdev->invalid_peer_head_msdu = NULL; 860 pdev->invalid_peer_tail_msdu = NULL; 861 862 return 0; 863 } 864 } 865 866 TAILQ_FOREACH(vdev, &pdev->vdev_list, vdev_list_elem) { 867 868 if (qdf_mem_cmp(wh->i_addr1, vdev->mac_addr.raw, 869 QDF_MAC_ADDR_SIZE) == 0) { 870 goto out; 871 } 872 } 873 874 if (!vdev) { 875 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 876 "VDEV not found"); 877 goto free; 878 } 879 880 out: 881 msg.wh = wh; 882 qdf_nbuf_pull_head(mpdu, RX_PKT_TLVS_LEN); 883 msg.nbuf = mpdu; 884 msg.vdev_id = vdev->vdev_id; 885 if (pdev->soc->cdp_soc.ol_ops->rx_invalid_peer) 886 pdev->soc->cdp_soc.ol_ops->rx_invalid_peer( 887 (struct cdp_ctrl_objmgr_psoc *)soc->ctrl_psoc, 888 pdev->pdev_id, &msg); 889 890 free: 891 /* Drop and free packet */ 892 curr_nbuf = mpdu; 893 while (curr_nbuf) { 894 next_nbuf = qdf_nbuf_next(curr_nbuf); 895 qdf_nbuf_free(curr_nbuf); 896 curr_nbuf = next_nbuf; 897 } 898 899 return 0; 900 } 901 902 /** 903 * dp_rx_process_invalid_peer_wrapper(): Function to wrap invalid peer handler 904 * @soc: DP SOC handle 905 * @mpdu: mpdu for which peer is invalid 906 * @mpdu_done: if an mpdu is completed 907 * @mac_id: mac_id which is one of 3 mac_ids(Assuming mac_id and 908 * pool_id has same mapping) 909 * 910 * return: integer type 911 */ 912 void dp_rx_process_invalid_peer_wrapper(struct dp_soc *soc, 913 qdf_nbuf_t mpdu, bool mpdu_done, 914 uint8_t mac_id) 915 { 916 /* Only trigger the process when mpdu is completed */ 917 if (mpdu_done) 918 dp_rx_process_invalid_peer(soc, mpdu, mac_id); 919 } 920 #else 921 uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t mpdu, 922 uint8_t mac_id) 923 { 924 qdf_nbuf_t curr_nbuf, next_nbuf; 925 struct dp_pdev *pdev; 926 struct dp_vdev *vdev = NULL; 927 struct ieee80211_frame *wh; 928 uint8_t *rx_tlv_hdr = qdf_nbuf_data(mpdu); 929 uint8_t *rx_pkt_hdr = hal_rx_pkt_hdr_get(rx_tlv_hdr); 930 931 wh = (struct ieee80211_frame *)rx_pkt_hdr; 932 933 if (!DP_FRAME_IS_DATA(wh)) { 934 QDF_TRACE_ERROR_RL(QDF_MODULE_ID_DP, 935 "only for data frames"); 936 goto free; 937 } 938 939 if (qdf_nbuf_len(mpdu) < sizeof(struct ieee80211_frame)) { 940 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 941 "Invalid nbuf length"); 942 goto free; 943 } 944 945 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 946 if (!pdev) { 947 QDF_TRACE(QDF_MODULE_ID_DP, 948 QDF_TRACE_LEVEL_ERROR, 949 "PDEV not found"); 950 goto free; 951 } 952 953 qdf_spin_lock_bh(&pdev->vdev_list_lock); 954 DP_PDEV_ITERATE_VDEV_LIST(pdev, vdev) { 955 if (qdf_mem_cmp(wh->i_addr1, vdev->mac_addr.raw, 956 QDF_MAC_ADDR_SIZE) == 0) { 957 qdf_spin_unlock_bh(&pdev->vdev_list_lock); 958 goto out; 959 } 960 } 961 qdf_spin_unlock_bh(&pdev->vdev_list_lock); 962 963 if (!vdev) { 964 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 965 "VDEV not found"); 966 goto free; 967 } 968 969 out: 970 if (soc->cdp_soc.ol_ops->rx_invalid_peer) 971 soc->cdp_soc.ol_ops->rx_invalid_peer(vdev->vdev_id, wh); 972 free: 973 /* reset the head and tail pointers */ 974 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 975 if (pdev) { 976 pdev->invalid_peer_head_msdu = NULL; 977 pdev->invalid_peer_tail_msdu = NULL; 978 } 979 980 /* Drop and free packet */ 981 curr_nbuf = mpdu; 982 while (curr_nbuf) { 983 next_nbuf = qdf_nbuf_next(curr_nbuf); 984 qdf_nbuf_free(curr_nbuf); 985 curr_nbuf = next_nbuf; 986 } 987 988 /* Reset the head and tail pointers */ 989 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 990 if (pdev) { 991 pdev->invalid_peer_head_msdu = NULL; 992 pdev->invalid_peer_tail_msdu = NULL; 993 } 994 995 return 0; 996 } 997 998 void dp_rx_process_invalid_peer_wrapper(struct dp_soc *soc, 999 qdf_nbuf_t mpdu, bool mpdu_done, 1000 uint8_t mac_id) 1001 { 1002 /* Process the nbuf */ 1003 dp_rx_process_invalid_peer(soc, mpdu, mac_id); 1004 } 1005 #endif 1006 1007 #ifdef RECEIVE_OFFLOAD 1008 /** 1009 * dp_rx_print_offload_info() - Print offload info from RX TLV 1010 * @soc: dp soc handle 1011 * @rx_tlv: RX TLV for which offload information is to be printed 1012 * 1013 * Return: None 1014 */ 1015 static void dp_rx_print_offload_info(struct dp_soc *soc, uint8_t *rx_tlv) 1016 { 1017 dp_verbose_debug("----------------------RX DESC LRO/GRO----------------------"); 1018 dp_verbose_debug("lro_eligible 0x%x", HAL_RX_TLV_GET_LRO_ELIGIBLE(rx_tlv)); 1019 dp_verbose_debug("pure_ack 0x%x", HAL_RX_TLV_GET_TCP_PURE_ACK(rx_tlv)); 1020 dp_verbose_debug("chksum 0x%x", hal_rx_tlv_get_tcp_chksum(soc->hal_soc, 1021 rx_tlv)); 1022 dp_verbose_debug("TCP seq num 0x%x", HAL_RX_TLV_GET_TCP_SEQ(rx_tlv)); 1023 dp_verbose_debug("TCP ack num 0x%x", HAL_RX_TLV_GET_TCP_ACK(rx_tlv)); 1024 dp_verbose_debug("TCP window 0x%x", HAL_RX_TLV_GET_TCP_WIN(rx_tlv)); 1025 dp_verbose_debug("TCP protocol 0x%x", HAL_RX_TLV_GET_TCP_PROTO(rx_tlv)); 1026 dp_verbose_debug("TCP offset 0x%x", HAL_RX_TLV_GET_TCP_OFFSET(rx_tlv)); 1027 dp_verbose_debug("toeplitz 0x%x", HAL_RX_TLV_GET_FLOW_ID_TOEPLITZ(rx_tlv)); 1028 dp_verbose_debug("---------------------------------------------------------"); 1029 } 1030 1031 /** 1032 * dp_rx_fill_gro_info() - Fill GRO info from RX TLV into skb->cb 1033 * @soc: DP SOC handle 1034 * @rx_tlv: RX TLV received for the msdu 1035 * @msdu: msdu for which GRO info needs to be filled 1036 * @rx_ol_pkt_cnt: counter to be incremented for GRO eligible packets 1037 * 1038 * Return: None 1039 */ 1040 static 1041 void dp_rx_fill_gro_info(struct dp_soc *soc, uint8_t *rx_tlv, 1042 qdf_nbuf_t msdu, uint32_t *rx_ol_pkt_cnt) 1043 { 1044 if (!wlan_cfg_is_gro_enabled(soc->wlan_cfg_ctx)) 1045 return; 1046 1047 /* Filling up RX offload info only for TCP packets */ 1048 if (!HAL_RX_TLV_GET_TCP_PROTO(rx_tlv)) 1049 return; 1050 1051 *rx_ol_pkt_cnt = *rx_ol_pkt_cnt + 1; 1052 1053 QDF_NBUF_CB_RX_LRO_ELIGIBLE(msdu) = 1054 HAL_RX_TLV_GET_LRO_ELIGIBLE(rx_tlv); 1055 QDF_NBUF_CB_RX_TCP_PURE_ACK(msdu) = 1056 HAL_RX_TLV_GET_TCP_PURE_ACK(rx_tlv); 1057 QDF_NBUF_CB_RX_TCP_CHKSUM(msdu) = 1058 hal_rx_tlv_get_tcp_chksum(soc->hal_soc, 1059 rx_tlv); 1060 QDF_NBUF_CB_RX_TCP_SEQ_NUM(msdu) = 1061 HAL_RX_TLV_GET_TCP_SEQ(rx_tlv); 1062 QDF_NBUF_CB_RX_TCP_ACK_NUM(msdu) = 1063 HAL_RX_TLV_GET_TCP_ACK(rx_tlv); 1064 QDF_NBUF_CB_RX_TCP_WIN(msdu) = 1065 HAL_RX_TLV_GET_TCP_WIN(rx_tlv); 1066 QDF_NBUF_CB_RX_TCP_PROTO(msdu) = 1067 HAL_RX_TLV_GET_TCP_PROTO(rx_tlv); 1068 QDF_NBUF_CB_RX_IPV6_PROTO(msdu) = 1069 HAL_RX_TLV_GET_IPV6(rx_tlv); 1070 QDF_NBUF_CB_RX_TCP_OFFSET(msdu) = 1071 HAL_RX_TLV_GET_TCP_OFFSET(rx_tlv); 1072 QDF_NBUF_CB_RX_FLOW_ID(msdu) = 1073 HAL_RX_TLV_GET_FLOW_ID_TOEPLITZ(rx_tlv); 1074 1075 dp_rx_print_offload_info(soc, rx_tlv); 1076 } 1077 #else 1078 static void dp_rx_fill_gro_info(struct dp_soc *soc, uint8_t *rx_tlv, 1079 qdf_nbuf_t msdu, uint32_t *rx_ol_pkt_cnt) 1080 { 1081 } 1082 #endif /* RECEIVE_OFFLOAD */ 1083 1084 /** 1085 * dp_rx_adjust_nbuf_len() - set appropriate msdu length in nbuf. 1086 * 1087 * @nbuf: pointer to msdu. 1088 * @mpdu_len: mpdu length 1089 * 1090 * Return: returns true if nbuf is last msdu of mpdu else retuns false. 1091 */ 1092 static inline bool dp_rx_adjust_nbuf_len(qdf_nbuf_t nbuf, uint16_t *mpdu_len) 1093 { 1094 bool last_nbuf; 1095 1096 if (*mpdu_len > (RX_DATA_BUFFER_SIZE - RX_PKT_TLVS_LEN)) { 1097 qdf_nbuf_set_pktlen(nbuf, RX_DATA_BUFFER_SIZE); 1098 last_nbuf = false; 1099 } else { 1100 qdf_nbuf_set_pktlen(nbuf, (*mpdu_len + RX_PKT_TLVS_LEN)); 1101 last_nbuf = true; 1102 } 1103 1104 *mpdu_len -= (RX_DATA_BUFFER_SIZE - RX_PKT_TLVS_LEN); 1105 1106 return last_nbuf; 1107 } 1108 1109 /** 1110 * dp_rx_sg_create() - create a frag_list for MSDUs which are spread across 1111 * multiple nbufs. 1112 * @nbuf: pointer to the first msdu of an amsdu. 1113 * 1114 * This function implements the creation of RX frag_list for cases 1115 * where an MSDU is spread across multiple nbufs. 1116 * 1117 * Return: returns the head nbuf which contains complete frag_list. 1118 */ 1119 qdf_nbuf_t dp_rx_sg_create(qdf_nbuf_t nbuf) 1120 { 1121 qdf_nbuf_t parent, frag_list, next = NULL; 1122 uint16_t frag_list_len = 0; 1123 uint16_t mpdu_len; 1124 bool last_nbuf; 1125 1126 /* 1127 * Use msdu len got from REO entry descriptor instead since 1128 * there is case the RX PKT TLV is corrupted while msdu_len 1129 * from REO descriptor is right for non-raw RX scatter msdu. 1130 */ 1131 mpdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1132 /* 1133 * this is a case where the complete msdu fits in one single nbuf. 1134 * in this case HW sets both start and end bit and we only need to 1135 * reset these bits for RAW mode simulator to decap the pkt 1136 */ 1137 if (qdf_nbuf_is_rx_chfrag_start(nbuf) && 1138 qdf_nbuf_is_rx_chfrag_end(nbuf)) { 1139 qdf_nbuf_set_pktlen(nbuf, mpdu_len + RX_PKT_TLVS_LEN); 1140 qdf_nbuf_pull_head(nbuf, RX_PKT_TLVS_LEN); 1141 return nbuf; 1142 } 1143 1144 /* 1145 * This is a case where we have multiple msdus (A-MSDU) spread across 1146 * multiple nbufs. here we create a fraglist out of these nbufs. 1147 * 1148 * the moment we encounter a nbuf with continuation bit set we 1149 * know for sure we have an MSDU which is spread across multiple 1150 * nbufs. We loop through and reap nbufs till we reach last nbuf. 1151 */ 1152 parent = nbuf; 1153 frag_list = nbuf->next; 1154 nbuf = nbuf->next; 1155 1156 /* 1157 * set the start bit in the first nbuf we encounter with continuation 1158 * bit set. This has the proper mpdu length set as it is the first 1159 * msdu of the mpdu. this becomes the parent nbuf and the subsequent 1160 * nbufs will form the frag_list of the parent nbuf. 1161 */ 1162 qdf_nbuf_set_rx_chfrag_start(parent, 1); 1163 last_nbuf = dp_rx_adjust_nbuf_len(parent, &mpdu_len); 1164 1165 /* 1166 * this is where we set the length of the fragments which are 1167 * associated to the parent nbuf. We iterate through the frag_list 1168 * till we hit the last_nbuf of the list. 1169 */ 1170 do { 1171 last_nbuf = dp_rx_adjust_nbuf_len(nbuf, &mpdu_len); 1172 qdf_nbuf_pull_head(nbuf, RX_PKT_TLVS_LEN); 1173 frag_list_len += qdf_nbuf_len(nbuf); 1174 1175 if (last_nbuf) { 1176 next = nbuf->next; 1177 nbuf->next = NULL; 1178 break; 1179 } 1180 1181 nbuf = nbuf->next; 1182 } while (!last_nbuf); 1183 1184 qdf_nbuf_set_rx_chfrag_start(nbuf, 0); 1185 qdf_nbuf_append_ext_list(parent, frag_list, frag_list_len); 1186 parent->next = next; 1187 1188 qdf_nbuf_pull_head(parent, RX_PKT_TLVS_LEN); 1189 return parent; 1190 } 1191 1192 /** 1193 * dp_rx_compute_delay() - Compute and fill in all timestamps 1194 * to pass in correct fields 1195 * 1196 * @vdev: pdev handle 1197 * @tx_desc: tx descriptor 1198 * @tid: tid value 1199 * Return: none 1200 */ 1201 void dp_rx_compute_delay(struct dp_vdev *vdev, qdf_nbuf_t nbuf) 1202 { 1203 uint8_t ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf); 1204 int64_t current_ts = qdf_ktime_to_ms(qdf_ktime_get()); 1205 uint32_t to_stack = qdf_nbuf_get_timedelta_ms(nbuf); 1206 uint8_t tid = qdf_nbuf_get_tid_val(nbuf); 1207 uint32_t interframe_delay = 1208 (uint32_t)(current_ts - vdev->prev_rx_deliver_tstamp); 1209 1210 dp_update_delay_stats(vdev->pdev, to_stack, tid, 1211 CDP_DELAY_STATS_REAP_STACK, ring_id); 1212 /* 1213 * Update interframe delay stats calculated at deliver_data_ol point. 1214 * Value of vdev->prev_rx_deliver_tstamp will be 0 for 1st frame, so 1215 * interframe delay will not be calculate correctly for 1st frame. 1216 * On the other side, this will help in avoiding extra per packet check 1217 * of vdev->prev_rx_deliver_tstamp. 1218 */ 1219 dp_update_delay_stats(vdev->pdev, interframe_delay, tid, 1220 CDP_DELAY_STATS_RX_INTERFRAME, ring_id); 1221 vdev->prev_rx_deliver_tstamp = current_ts; 1222 } 1223 1224 /** 1225 * dp_rx_drop_nbuf_list() - drop an nbuf list 1226 * @pdev: dp pdev reference 1227 * @buf_list: buffer list to be dropepd 1228 * 1229 * Return: int (number of bufs dropped) 1230 */ 1231 static inline int dp_rx_drop_nbuf_list(struct dp_pdev *pdev, 1232 qdf_nbuf_t buf_list) 1233 { 1234 struct cdp_tid_rx_stats *stats = NULL; 1235 uint8_t tid = 0, ring_id = 0; 1236 int num_dropped = 0; 1237 qdf_nbuf_t buf, next_buf; 1238 1239 buf = buf_list; 1240 while (buf) { 1241 ring_id = QDF_NBUF_CB_RX_CTX_ID(buf); 1242 next_buf = qdf_nbuf_queue_next(buf); 1243 tid = qdf_nbuf_get_tid_val(buf); 1244 if (qdf_likely(pdev)) { 1245 stats = &pdev->stats.tid_stats.tid_rx_stats[ring_id][tid]; 1246 stats->fail_cnt[INVALID_PEER_VDEV]++; 1247 stats->delivered_to_stack--; 1248 } 1249 qdf_nbuf_free(buf); 1250 buf = next_buf; 1251 num_dropped++; 1252 } 1253 1254 return num_dropped; 1255 } 1256 1257 #ifdef PEER_CACHE_RX_PKTS 1258 /** 1259 * dp_rx_flush_rx_cached() - flush cached rx frames 1260 * @peer: peer 1261 * @drop: flag to drop frames or forward to net stack 1262 * 1263 * Return: None 1264 */ 1265 void dp_rx_flush_rx_cached(struct dp_peer *peer, bool drop) 1266 { 1267 struct dp_peer_cached_bufq *bufqi; 1268 struct dp_rx_cached_buf *cache_buf = NULL; 1269 ol_txrx_rx_fp data_rx = NULL; 1270 int num_buff_elem; 1271 QDF_STATUS status; 1272 1273 if (qdf_atomic_inc_return(&peer->flush_in_progress) > 1) { 1274 qdf_atomic_dec(&peer->flush_in_progress); 1275 return; 1276 } 1277 1278 qdf_spin_lock_bh(&peer->peer_info_lock); 1279 if (peer->state >= OL_TXRX_PEER_STATE_CONN && peer->vdev->osif_rx) 1280 data_rx = peer->vdev->osif_rx; 1281 else 1282 drop = true; 1283 qdf_spin_unlock_bh(&peer->peer_info_lock); 1284 1285 bufqi = &peer->bufq_info; 1286 1287 qdf_spin_lock_bh(&bufqi->bufq_lock); 1288 qdf_list_remove_front(&bufqi->cached_bufq, 1289 (qdf_list_node_t **)&cache_buf); 1290 while (cache_buf) { 1291 num_buff_elem = QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST( 1292 cache_buf->buf); 1293 bufqi->entries -= num_buff_elem; 1294 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1295 if (drop) { 1296 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1297 cache_buf->buf); 1298 } else { 1299 /* Flush the cached frames to OSIF DEV */ 1300 status = data_rx(peer->vdev->osif_vdev, cache_buf->buf); 1301 if (status != QDF_STATUS_SUCCESS) 1302 bufqi->dropped = dp_rx_drop_nbuf_list( 1303 peer->vdev->pdev, 1304 cache_buf->buf); 1305 } 1306 qdf_mem_free(cache_buf); 1307 cache_buf = NULL; 1308 qdf_spin_lock_bh(&bufqi->bufq_lock); 1309 qdf_list_remove_front(&bufqi->cached_bufq, 1310 (qdf_list_node_t **)&cache_buf); 1311 } 1312 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1313 qdf_atomic_dec(&peer->flush_in_progress); 1314 } 1315 1316 /** 1317 * dp_rx_enqueue_rx() - cache rx frames 1318 * @peer: peer 1319 * @rx_buf_list: cache buffer list 1320 * 1321 * Return: None 1322 */ 1323 static QDF_STATUS 1324 dp_rx_enqueue_rx(struct dp_peer *peer, qdf_nbuf_t rx_buf_list) 1325 { 1326 struct dp_rx_cached_buf *cache_buf; 1327 struct dp_peer_cached_bufq *bufqi = &peer->bufq_info; 1328 int num_buff_elem; 1329 1330 dp_debug_rl("bufq->curr %d bufq->drops %d", bufqi->entries, 1331 bufqi->dropped); 1332 if (!peer->valid) { 1333 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1334 rx_buf_list); 1335 return QDF_STATUS_E_INVAL; 1336 } 1337 1338 qdf_spin_lock_bh(&bufqi->bufq_lock); 1339 if (bufqi->entries >= bufqi->thresh) { 1340 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1341 rx_buf_list); 1342 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1343 return QDF_STATUS_E_RESOURCES; 1344 } 1345 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1346 1347 num_buff_elem = QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(rx_buf_list); 1348 1349 cache_buf = qdf_mem_malloc_atomic(sizeof(*cache_buf)); 1350 if (!cache_buf) { 1351 QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, 1352 "Failed to allocate buf to cache rx frames"); 1353 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1354 rx_buf_list); 1355 return QDF_STATUS_E_NOMEM; 1356 } 1357 1358 cache_buf->buf = rx_buf_list; 1359 1360 qdf_spin_lock_bh(&bufqi->bufq_lock); 1361 qdf_list_insert_back(&bufqi->cached_bufq, 1362 &cache_buf->node); 1363 bufqi->entries += num_buff_elem; 1364 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1365 1366 return QDF_STATUS_SUCCESS; 1367 } 1368 1369 static inline 1370 bool dp_rx_is_peer_cache_bufq_supported(void) 1371 { 1372 return true; 1373 } 1374 #else 1375 static inline 1376 bool dp_rx_is_peer_cache_bufq_supported(void) 1377 { 1378 return false; 1379 } 1380 1381 static inline QDF_STATUS 1382 dp_rx_enqueue_rx(struct dp_peer *peer, qdf_nbuf_t rx_buf_list) 1383 { 1384 return QDF_STATUS_SUCCESS; 1385 } 1386 #endif 1387 1388 #ifndef DELIVERY_TO_STACK_STATUS_CHECK 1389 /** 1390 * dp_rx_check_delivery_to_stack() - Deliver pkts to network 1391 * using the appropriate call back functions. 1392 * @soc: soc 1393 * @vdev: vdev 1394 * @peer: peer 1395 * @nbuf_head: skb list head 1396 * @nbuf_tail: skb list tail 1397 * 1398 * Return: None 1399 */ 1400 static void dp_rx_check_delivery_to_stack(struct dp_soc *soc, 1401 struct dp_vdev *vdev, 1402 struct dp_peer *peer, 1403 qdf_nbuf_t nbuf_head) 1404 { 1405 /* Function pointer initialized only when FISA is enabled */ 1406 if (vdev->osif_fisa_rx) 1407 /* on failure send it via regular path */ 1408 vdev->osif_fisa_rx(soc, vdev, nbuf_head); 1409 else 1410 vdev->osif_rx(vdev->osif_vdev, nbuf_head); 1411 } 1412 1413 #else 1414 /** 1415 * dp_rx_check_delivery_to_stack() - Deliver pkts to network 1416 * using the appropriate call back functions. 1417 * @soc: soc 1418 * @vdev: vdev 1419 * @peer: peer 1420 * @nbuf_head: skb list head 1421 * @nbuf_tail: skb list tail 1422 * 1423 * Check the return status of the call back function and drop 1424 * the packets if the return status indicates a failure. 1425 * 1426 * Return: None 1427 */ 1428 static void dp_rx_check_delivery_to_stack(struct dp_soc *soc, 1429 struct dp_vdev *vdev, 1430 struct dp_peer *peer, 1431 qdf_nbuf_t nbuf_head) 1432 { 1433 int num_nbuf = 0; 1434 QDF_STATUS ret_val = QDF_STATUS_E_FAILURE; 1435 1436 /* Function pointer initialized only when FISA is enabled */ 1437 if (vdev->osif_fisa_rx) 1438 /* on failure send it via regular path */ 1439 ret_val = vdev->osif_fisa_rx(soc, vdev, nbuf_head); 1440 else if (vdev->osif_rx) 1441 ret_val = vdev->osif_rx(vdev->osif_vdev, nbuf_head); 1442 1443 if (!QDF_IS_STATUS_SUCCESS(ret_val)) { 1444 num_nbuf = dp_rx_drop_nbuf_list(vdev->pdev, nbuf_head); 1445 DP_STATS_INC(soc, rx.err.rejected, num_nbuf); 1446 if (peer) 1447 DP_STATS_DEC(peer, rx.to_stack.num, num_nbuf); 1448 } 1449 } 1450 #endif /* ifdef DELIVERY_TO_STACK_STATUS_CHECK */ 1451 1452 void dp_rx_deliver_to_stack(struct dp_soc *soc, 1453 struct dp_vdev *vdev, 1454 struct dp_peer *peer, 1455 qdf_nbuf_t nbuf_head, 1456 qdf_nbuf_t nbuf_tail) 1457 { 1458 int num_nbuf = 0; 1459 1460 if (qdf_unlikely(!vdev || vdev->delete.pending)) { 1461 num_nbuf = dp_rx_drop_nbuf_list(NULL, nbuf_head); 1462 /* 1463 * This is a special case where vdev is invalid, 1464 * so we cannot know the pdev to which this packet 1465 * belonged. Hence we update the soc rx error stats. 1466 */ 1467 DP_STATS_INC(soc, rx.err.invalid_vdev, num_nbuf); 1468 return; 1469 } 1470 1471 /* 1472 * highly unlikely to have a vdev without a registered rx 1473 * callback function. if so let us free the nbuf_list. 1474 */ 1475 if (qdf_unlikely(!vdev->osif_rx)) { 1476 if (peer && dp_rx_is_peer_cache_bufq_supported()) { 1477 dp_rx_enqueue_rx(peer, nbuf_head); 1478 } else { 1479 num_nbuf = dp_rx_drop_nbuf_list(vdev->pdev, 1480 nbuf_head); 1481 DP_STATS_DEC(peer, rx.to_stack.num, num_nbuf); 1482 } 1483 return; 1484 } 1485 1486 if (qdf_unlikely(vdev->rx_decap_type == htt_cmn_pkt_type_raw) || 1487 (vdev->rx_decap_type == htt_cmn_pkt_type_native_wifi)) { 1488 vdev->osif_rsim_rx_decap(vdev->osif_vdev, &nbuf_head, 1489 &nbuf_tail, peer->mac_addr.raw); 1490 } 1491 1492 dp_rx_check_delivery_to_stack(soc, vdev, peer, nbuf_head); 1493 } 1494 1495 /** 1496 * dp_rx_cksum_offload() - set the nbuf checksum as defined by hardware. 1497 * @nbuf: pointer to the first msdu of an amsdu. 1498 * @rx_tlv_hdr: pointer to the start of RX TLV headers. 1499 * 1500 * The ipsumed field of the skb is set based on whether HW validated the 1501 * IP/TCP/UDP checksum. 1502 * 1503 * Return: void 1504 */ 1505 static inline void dp_rx_cksum_offload(struct dp_pdev *pdev, 1506 qdf_nbuf_t nbuf, 1507 uint8_t *rx_tlv_hdr) 1508 { 1509 qdf_nbuf_rx_cksum_t cksum = {0}; 1510 bool ip_csum_err = hal_rx_attn_ip_cksum_fail_get(rx_tlv_hdr); 1511 bool tcp_udp_csum_er = hal_rx_attn_tcp_udp_cksum_fail_get(rx_tlv_hdr); 1512 1513 if (qdf_likely(!ip_csum_err && !tcp_udp_csum_er)) { 1514 cksum.l4_result = QDF_NBUF_RX_CKSUM_TCP_UDP_UNNECESSARY; 1515 qdf_nbuf_set_rx_cksum(nbuf, &cksum); 1516 } else { 1517 DP_STATS_INCC(pdev, err.ip_csum_err, 1, ip_csum_err); 1518 DP_STATS_INCC(pdev, err.tcp_udp_csum_err, 1, tcp_udp_csum_er); 1519 } 1520 } 1521 1522 #ifdef VDEV_PEER_PROTOCOL_COUNT 1523 #define dp_rx_msdu_stats_update_prot_cnts(vdev_hdl, nbuf, peer) \ 1524 { \ 1525 qdf_nbuf_t nbuf_local; \ 1526 struct dp_peer *peer_local; \ 1527 struct dp_vdev *vdev_local = vdev_hdl; \ 1528 do { \ 1529 if (qdf_likely(!((vdev_local)->peer_protocol_count_track))) \ 1530 break; \ 1531 nbuf_local = nbuf; \ 1532 peer_local = peer; \ 1533 if (qdf_unlikely(qdf_nbuf_is_frag((nbuf_local)))) \ 1534 break; \ 1535 else if (qdf_unlikely(qdf_nbuf_is_raw_frame((nbuf_local)))) \ 1536 break; \ 1537 dp_vdev_peer_stats_update_protocol_cnt((vdev_local), \ 1538 (nbuf_local), \ 1539 (peer_local), 0, 1); \ 1540 } while (0); \ 1541 } 1542 #else 1543 #define dp_rx_msdu_stats_update_prot_cnts(vdev_hdl, nbuf, peer) 1544 #endif 1545 1546 /** 1547 * dp_rx_msdu_stats_update() - update per msdu stats. 1548 * @soc: core txrx main context 1549 * @nbuf: pointer to the first msdu of an amsdu. 1550 * @rx_tlv_hdr: pointer to the start of RX TLV headers. 1551 * @peer: pointer to the peer object. 1552 * @ring_id: reo dest ring number on which pkt is reaped. 1553 * @tid_stats: per tid rx stats. 1554 * 1555 * update all the per msdu stats for that nbuf. 1556 * Return: void 1557 */ 1558 static void dp_rx_msdu_stats_update(struct dp_soc *soc, 1559 qdf_nbuf_t nbuf, 1560 uint8_t *rx_tlv_hdr, 1561 struct dp_peer *peer, 1562 uint8_t ring_id, 1563 struct cdp_tid_rx_stats *tid_stats) 1564 { 1565 bool is_ampdu, is_not_amsdu; 1566 uint32_t sgi, mcs, tid, nss, bw, reception_type, pkt_type; 1567 struct dp_vdev *vdev = peer->vdev; 1568 qdf_ether_header_t *eh; 1569 uint16_t msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1570 1571 dp_rx_msdu_stats_update_prot_cnts(vdev, nbuf, peer); 1572 is_not_amsdu = qdf_nbuf_is_rx_chfrag_start(nbuf) & 1573 qdf_nbuf_is_rx_chfrag_end(nbuf); 1574 1575 DP_STATS_INC_PKT(peer, rx.rcvd_reo[ring_id], 1, msdu_len); 1576 DP_STATS_INCC(peer, rx.non_amsdu_cnt, 1, is_not_amsdu); 1577 DP_STATS_INCC(peer, rx.amsdu_cnt, 1, !is_not_amsdu); 1578 DP_STATS_INCC(peer, rx.rx_retries, 1, qdf_nbuf_is_rx_retry_flag(nbuf)); 1579 1580 tid_stats->msdu_cnt++; 1581 if (qdf_unlikely(qdf_nbuf_is_da_mcbc(nbuf) && 1582 (vdev->rx_decap_type == htt_cmn_pkt_type_ethernet))) { 1583 eh = (qdf_ether_header_t *)qdf_nbuf_data(nbuf); 1584 DP_STATS_INC_PKT(peer, rx.multicast, 1, msdu_len); 1585 tid_stats->mcast_msdu_cnt++; 1586 if (QDF_IS_ADDR_BROADCAST(eh->ether_dhost)) { 1587 DP_STATS_INC_PKT(peer, rx.bcast, 1, msdu_len); 1588 tid_stats->bcast_msdu_cnt++; 1589 } 1590 } 1591 1592 /* 1593 * currently we can return from here as we have similar stats 1594 * updated at per ppdu level instead of msdu level 1595 */ 1596 if (!soc->process_rx_status) 1597 return; 1598 1599 is_ampdu = hal_rx_mpdu_info_ampdu_flag_get(rx_tlv_hdr); 1600 DP_STATS_INCC(peer, rx.ampdu_cnt, 1, is_ampdu); 1601 DP_STATS_INCC(peer, rx.non_ampdu_cnt, 1, !(is_ampdu)); 1602 1603 sgi = hal_rx_msdu_start_sgi_get(rx_tlv_hdr); 1604 mcs = hal_rx_msdu_start_rate_mcs_get(rx_tlv_hdr); 1605 tid = qdf_nbuf_get_tid_val(nbuf); 1606 bw = hal_rx_msdu_start_bw_get(rx_tlv_hdr); 1607 reception_type = hal_rx_msdu_start_reception_type_get(soc->hal_soc, 1608 rx_tlv_hdr); 1609 nss = hal_rx_msdu_start_nss_get(soc->hal_soc, rx_tlv_hdr); 1610 pkt_type = hal_rx_msdu_start_get_pkt_type(rx_tlv_hdr); 1611 1612 DP_STATS_INCC(peer, rx.rx_mpdu_cnt[mcs], 1, 1613 ((mcs < MAX_MCS) && QDF_NBUF_CB_RX_CHFRAG_START(nbuf))); 1614 DP_STATS_INCC(peer, rx.rx_mpdu_cnt[MAX_MCS - 1], 1, 1615 ((mcs >= MAX_MCS) && QDF_NBUF_CB_RX_CHFRAG_START(nbuf))); 1616 DP_STATS_INC(peer, rx.bw[bw], 1); 1617 /* 1618 * only if nss > 0 and pkt_type is 11N/AC/AX, 1619 * then increase index [nss - 1] in array counter. 1620 */ 1621 if (nss > 0 && (pkt_type == DOT11_N || 1622 pkt_type == DOT11_AC || 1623 pkt_type == DOT11_AX)) 1624 DP_STATS_INC(peer, rx.nss[nss - 1], 1); 1625 1626 DP_STATS_INC(peer, rx.sgi_count[sgi], 1); 1627 DP_STATS_INCC(peer, rx.err.mic_err, 1, 1628 hal_rx_mpdu_end_mic_err_get(rx_tlv_hdr)); 1629 DP_STATS_INCC(peer, rx.err.decrypt_err, 1, 1630 hal_rx_mpdu_end_decrypt_err_get(rx_tlv_hdr)); 1631 1632 DP_STATS_INC(peer, rx.wme_ac_type[TID_TO_WME_AC(tid)], 1); 1633 DP_STATS_INC(peer, rx.reception_type[reception_type], 1); 1634 1635 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1636 ((mcs >= MAX_MCS_11A) && (pkt_type == DOT11_A))); 1637 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1638 ((mcs <= MAX_MCS_11A) && (pkt_type == DOT11_A))); 1639 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1640 ((mcs >= MAX_MCS_11B) && (pkt_type == DOT11_B))); 1641 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1642 ((mcs <= MAX_MCS_11B) && (pkt_type == DOT11_B))); 1643 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1644 ((mcs >= MAX_MCS_11A) && (pkt_type == DOT11_N))); 1645 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1646 ((mcs <= MAX_MCS_11A) && (pkt_type == DOT11_N))); 1647 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1648 ((mcs >= MAX_MCS_11AC) && (pkt_type == DOT11_AC))); 1649 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1650 ((mcs <= MAX_MCS_11AC) && (pkt_type == DOT11_AC))); 1651 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1652 ((mcs >= MAX_MCS) && (pkt_type == DOT11_AX))); 1653 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1654 ((mcs < MAX_MCS) && (pkt_type == DOT11_AX))); 1655 1656 if ((soc->process_rx_status) && 1657 hal_rx_attn_first_mpdu_get(rx_tlv_hdr)) { 1658 #if defined(FEATURE_PERPKT_INFO) && WDI_EVENT_ENABLE 1659 if (!vdev->pdev) 1660 return; 1661 1662 dp_wdi_event_handler(WDI_EVENT_UPDATE_DP_STATS, vdev->pdev->soc, 1663 &peer->stats, peer->peer_id, 1664 UPDATE_PEER_STATS, 1665 vdev->pdev->pdev_id); 1666 #endif 1667 1668 } 1669 } 1670 1671 static inline bool is_sa_da_idx_valid(struct dp_soc *soc, 1672 uint8_t *rx_tlv_hdr, 1673 qdf_nbuf_t nbuf, 1674 struct hal_rx_msdu_metadata msdu_info) 1675 { 1676 if ((qdf_nbuf_is_sa_valid(nbuf) && 1677 (msdu_info.sa_idx > wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx))) || 1678 (!qdf_nbuf_is_da_mcbc(nbuf) && 1679 qdf_nbuf_is_da_valid(nbuf) && 1680 (msdu_info.da_idx > wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx)))) 1681 return false; 1682 1683 return true; 1684 } 1685 1686 #ifndef WDS_VENDOR_EXTENSION 1687 int dp_wds_rx_policy_check(uint8_t *rx_tlv_hdr, 1688 struct dp_vdev *vdev, 1689 struct dp_peer *peer) 1690 { 1691 return 1; 1692 } 1693 #endif 1694 1695 #ifdef RX_DESC_DEBUG_CHECK 1696 /** 1697 * dp_rx_desc_nbuf_sanity_check - Add sanity check to catch REO rx_desc paddr 1698 * corruption 1699 * 1700 * @ring_desc: REO ring descriptor 1701 * @rx_desc: Rx descriptor 1702 * 1703 * Return: NONE 1704 */ 1705 static inline 1706 void dp_rx_desc_nbuf_sanity_check(hal_ring_desc_t ring_desc, 1707 struct dp_rx_desc *rx_desc) 1708 { 1709 struct hal_buf_info hbi; 1710 1711 hal_rx_reo_buf_paddr_get(ring_desc, &hbi); 1712 /* Sanity check for possible buffer paddr corruption */ 1713 qdf_assert_always((&hbi)->paddr == 1714 qdf_nbuf_get_frag_paddr(rx_desc->nbuf, 0)); 1715 } 1716 #else 1717 static inline 1718 void dp_rx_desc_nbuf_sanity_check(hal_ring_desc_t ring_desc, 1719 struct dp_rx_desc *rx_desc) 1720 { 1721 } 1722 #endif 1723 1724 #ifdef WLAN_FEATURE_RX_SOFTIRQ_TIME_LIMIT 1725 static inline 1726 bool dp_rx_reap_loop_pkt_limit_hit(struct dp_soc *soc, int num_reaped) 1727 { 1728 bool limit_hit = false; 1729 struct wlan_cfg_dp_soc_ctxt *cfg = soc->wlan_cfg_ctx; 1730 1731 limit_hit = 1732 (num_reaped >= cfg->rx_reap_loop_pkt_limit) ? true : false; 1733 1734 if (limit_hit) 1735 DP_STATS_INC(soc, rx.reap_loop_pkt_limit_hit, 1) 1736 1737 return limit_hit; 1738 } 1739 1740 static inline bool dp_rx_enable_eol_data_check(struct dp_soc *soc) 1741 { 1742 return soc->wlan_cfg_ctx->rx_enable_eol_data_check; 1743 } 1744 1745 #else 1746 static inline 1747 bool dp_rx_reap_loop_pkt_limit_hit(struct dp_soc *soc, int num_reaped) 1748 { 1749 return false; 1750 } 1751 1752 static inline bool dp_rx_enable_eol_data_check(struct dp_soc *soc) 1753 { 1754 return false; 1755 } 1756 1757 #endif /* WLAN_FEATURE_RX_SOFTIRQ_TIME_LIMIT */ 1758 1759 #ifdef DP_RX_PKT_NO_PEER_DELIVER 1760 /** 1761 * dp_rx_deliver_to_stack_no_peer() - try deliver rx data even if 1762 * no corresbonding peer found 1763 * @soc: core txrx main context 1764 * @nbuf: pkt skb pointer 1765 * 1766 * This function will try to deliver some RX special frames to stack 1767 * even there is no peer matched found. for instance, LFR case, some 1768 * eapol data will be sent to host before peer_map done. 1769 * 1770 * Return: None 1771 */ 1772 static 1773 void dp_rx_deliver_to_stack_no_peer(struct dp_soc *soc, qdf_nbuf_t nbuf) 1774 { 1775 uint16_t peer_id; 1776 uint8_t vdev_id; 1777 struct dp_vdev *vdev; 1778 uint32_t l2_hdr_offset = 0; 1779 uint16_t msdu_len = 0; 1780 uint32_t pkt_len = 0; 1781 uint8_t *rx_tlv_hdr; 1782 uint32_t frame_mask = FRAME_MASK_IPV4_ARP | FRAME_MASK_IPV4_DHCP | 1783 FRAME_MASK_IPV4_EAPOL | FRAME_MASK_IPV6_DHCP; 1784 1785 peer_id = QDF_NBUF_CB_RX_PEER_ID(nbuf); 1786 if (peer_id > soc->max_peers) 1787 goto deliver_fail; 1788 1789 vdev_id = QDF_NBUF_CB_RX_VDEV_ID(nbuf); 1790 vdev = dp_get_vdev_from_soc_vdev_id_wifi3(soc, vdev_id); 1791 if (!vdev || vdev->delete.pending || !vdev->osif_rx) 1792 goto deliver_fail; 1793 1794 if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) 1795 goto deliver_fail; 1796 1797 rx_tlv_hdr = qdf_nbuf_data(nbuf); 1798 l2_hdr_offset = 1799 hal_rx_msdu_end_l3_hdr_padding_get(soc->hal_soc, rx_tlv_hdr); 1800 1801 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1802 pkt_len = msdu_len + l2_hdr_offset + RX_PKT_TLVS_LEN; 1803 QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(nbuf) = 1; 1804 1805 qdf_nbuf_set_pktlen(nbuf, pkt_len); 1806 qdf_nbuf_pull_head(nbuf, 1807 RX_PKT_TLVS_LEN + 1808 l2_hdr_offset); 1809 1810 if (dp_rx_is_special_frame(nbuf, frame_mask)) { 1811 qdf_nbuf_set_exc_frame(nbuf, 1); 1812 if (QDF_STATUS_SUCCESS != 1813 vdev->osif_rx(vdev->osif_vdev, nbuf)) 1814 goto deliver_fail; 1815 DP_STATS_INC(soc, rx.err.pkt_delivered_no_peer, 1); 1816 return; 1817 } 1818 1819 deliver_fail: 1820 DP_STATS_INC_PKT(soc, rx.err.rx_invalid_peer, 1, 1821 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 1822 qdf_nbuf_free(nbuf); 1823 } 1824 #else 1825 static inline 1826 void dp_rx_deliver_to_stack_no_peer(struct dp_soc *soc, qdf_nbuf_t nbuf) 1827 { 1828 DP_STATS_INC_PKT(soc, rx.err.rx_invalid_peer, 1, 1829 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 1830 qdf_nbuf_free(nbuf); 1831 } 1832 #endif 1833 1834 /** 1835 * dp_rx_srng_get_num_pending() - get number of pending entries 1836 * @hal_soc: hal soc opaque pointer 1837 * @hal_ring: opaque pointer to the HAL Rx Ring 1838 * @num_entries: number of entries in the hal_ring. 1839 * @near_full: pointer to a boolean. This is set if ring is near full. 1840 * 1841 * The function returns the number of entries in a destination ring which are 1842 * yet to be reaped. The function also checks if the ring is near full. 1843 * If more than half of the ring needs to be reaped, the ring is considered 1844 * approaching full. 1845 * The function useses hal_srng_dst_num_valid_locked to get the number of valid 1846 * entries. It should not be called within a SRNG lock. HW pointer value is 1847 * synced into cached_hp. 1848 * 1849 * Return: Number of pending entries if any 1850 */ 1851 static 1852 uint32_t dp_rx_srng_get_num_pending(hal_soc_handle_t hal_soc, 1853 hal_ring_handle_t hal_ring_hdl, 1854 uint32_t num_entries, 1855 bool *near_full) 1856 { 1857 uint32_t num_pending = 0; 1858 1859 num_pending = hal_srng_dst_num_valid_locked(hal_soc, 1860 hal_ring_hdl, 1861 true); 1862 1863 if (num_entries && (num_pending >= num_entries >> 1)) 1864 *near_full = true; 1865 else 1866 *near_full = false; 1867 1868 return num_pending; 1869 } 1870 1871 #ifdef WLAN_SUPPORT_RX_FISA 1872 void dp_rx_skip_tlvs(qdf_nbuf_t nbuf, uint32_t l3_padding) 1873 { 1874 QDF_NBUF_CB_RX_PACKET_L3_HDR_PAD(nbuf) = l3_padding; 1875 qdf_nbuf_pull_head(nbuf, l3_padding + RX_PKT_TLVS_LEN); 1876 } 1877 1878 /** 1879 * dp_rx_set_hdr_pad() - set l3 padding in nbuf cb 1880 * @nbuf: pkt skb pointer 1881 * @l3_padding: l3 padding 1882 * 1883 * Return: None 1884 */ 1885 static inline 1886 void dp_rx_set_hdr_pad(qdf_nbuf_t nbuf, uint32_t l3_padding) 1887 { 1888 QDF_NBUF_CB_RX_PACKET_L3_HDR_PAD(nbuf) = l3_padding; 1889 } 1890 #else 1891 void dp_rx_skip_tlvs(qdf_nbuf_t nbuf, uint32_t l3_padding) 1892 { 1893 qdf_nbuf_pull_head(nbuf, l3_padding + RX_PKT_TLVS_LEN); 1894 } 1895 1896 static inline 1897 void dp_rx_set_hdr_pad(qdf_nbuf_t nbuf, uint32_t l3_padding) 1898 { 1899 } 1900 #endif 1901 1902 1903 /** 1904 * dp_rx_process() - Brain of the Rx processing functionality 1905 * Called from the bottom half (tasklet/NET_RX_SOFTIRQ) 1906 * @int_ctx: per interrupt context 1907 * @hal_ring: opaque pointer to the HAL Rx Ring, which will be serviced 1908 * @reo_ring_num: ring number (0, 1, 2 or 3) of the reo ring. 1909 * @quota: No. of units (packets) that can be serviced in one shot. 1910 * 1911 * This function implements the core of Rx functionality. This is 1912 * expected to handle only non-error frames. 1913 * 1914 * Return: uint32_t: No. of elements processed 1915 */ 1916 uint32_t dp_rx_process(struct dp_intr *int_ctx, hal_ring_handle_t hal_ring_hdl, 1917 uint8_t reo_ring_num, uint32_t quota) 1918 { 1919 hal_ring_desc_t ring_desc; 1920 hal_soc_handle_t hal_soc; 1921 struct dp_rx_desc *rx_desc = NULL; 1922 qdf_nbuf_t nbuf, next; 1923 bool near_full; 1924 union dp_rx_desc_list_elem_t *head[MAX_PDEV_CNT]; 1925 union dp_rx_desc_list_elem_t *tail[MAX_PDEV_CNT]; 1926 uint32_t num_pending; 1927 uint32_t rx_bufs_used = 0, rx_buf_cookie; 1928 uint16_t msdu_len = 0; 1929 uint16_t peer_id; 1930 uint8_t vdev_id; 1931 struct dp_peer *peer; 1932 struct dp_vdev *vdev; 1933 uint32_t pkt_len = 0; 1934 struct hal_rx_mpdu_desc_info mpdu_desc_info; 1935 struct hal_rx_msdu_desc_info msdu_desc_info; 1936 enum hal_reo_error_status error; 1937 uint32_t peer_mdata; 1938 uint8_t *rx_tlv_hdr; 1939 uint32_t rx_bufs_reaped[MAX_PDEV_CNT]; 1940 uint8_t mac_id = 0; 1941 struct dp_pdev *rx_pdev; 1942 struct dp_srng *dp_rxdma_srng; 1943 struct rx_desc_pool *rx_desc_pool; 1944 struct dp_soc *soc = int_ctx->soc; 1945 uint8_t ring_id = 0; 1946 uint8_t core_id = 0; 1947 struct cdp_tid_rx_stats *tid_stats; 1948 qdf_nbuf_t nbuf_head; 1949 qdf_nbuf_t nbuf_tail; 1950 qdf_nbuf_t deliver_list_head; 1951 qdf_nbuf_t deliver_list_tail; 1952 uint32_t num_rx_bufs_reaped = 0; 1953 uint32_t intr_id; 1954 struct hif_opaque_softc *scn; 1955 int32_t tid = 0; 1956 bool is_prev_msdu_last = true; 1957 uint32_t num_entries_avail = 0; 1958 uint32_t rx_ol_pkt_cnt = 0; 1959 uint32_t num_entries = 0; 1960 struct hal_rx_msdu_metadata msdu_metadata; 1961 QDF_STATUS status; 1962 1963 DP_HIST_INIT(); 1964 1965 qdf_assert_always(soc && hal_ring_hdl); 1966 hal_soc = soc->hal_soc; 1967 qdf_assert_always(hal_soc); 1968 1969 scn = soc->hif_handle; 1970 hif_pm_runtime_mark_dp_rx_busy(scn); 1971 intr_id = int_ctx->dp_intr_id; 1972 num_entries = hal_srng_get_num_entries(hal_soc, hal_ring_hdl); 1973 1974 more_data: 1975 /* reset local variables here to be re-used in the function */ 1976 nbuf_head = NULL; 1977 nbuf_tail = NULL; 1978 deliver_list_head = NULL; 1979 deliver_list_tail = NULL; 1980 peer = NULL; 1981 vdev = NULL; 1982 num_rx_bufs_reaped = 0; 1983 1984 qdf_mem_zero(rx_bufs_reaped, sizeof(rx_bufs_reaped)); 1985 qdf_mem_zero(&mpdu_desc_info, sizeof(mpdu_desc_info)); 1986 qdf_mem_zero(&msdu_desc_info, sizeof(msdu_desc_info)); 1987 qdf_mem_zero(head, sizeof(head)); 1988 qdf_mem_zero(tail, sizeof(tail)); 1989 1990 if (qdf_unlikely(dp_rx_srng_access_start(int_ctx, soc, hal_ring_hdl))) { 1991 1992 /* 1993 * Need API to convert from hal_ring pointer to 1994 * Ring Type / Ring Id combo 1995 */ 1996 DP_STATS_INC(soc, rx.err.hal_ring_access_fail, 1); 1997 QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, 1998 FL("HAL RING Access Failed -- %pK"), hal_ring_hdl); 1999 goto done; 2000 } 2001 2002 /* 2003 * start reaping the buffers from reo ring and queue 2004 * them in per vdev queue. 2005 * Process the received pkts in a different per vdev loop. 2006 */ 2007 while (qdf_likely(quota && 2008 (ring_desc = hal_srng_dst_peek(hal_soc, 2009 hal_ring_hdl)))) { 2010 2011 error = HAL_RX_ERROR_STATUS_GET(ring_desc); 2012 ring_id = hal_srng_ring_id_get(hal_ring_hdl); 2013 2014 if (qdf_unlikely(error == HAL_REO_ERROR_DETECTED)) { 2015 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 2016 FL("HAL RING 0x%pK:error %d"), hal_ring_hdl, error); 2017 DP_STATS_INC(soc, rx.err.hal_reo_error[ring_id], 1); 2018 /* Don't know how to deal with this -- assert */ 2019 qdf_assert(0); 2020 } 2021 2022 rx_buf_cookie = HAL_RX_REO_BUF_COOKIE_GET(ring_desc); 2023 2024 rx_desc = dp_rx_cookie_2_va_rxdma_buf(soc, rx_buf_cookie); 2025 status = dp_rx_desc_sanity(soc, hal_soc, hal_ring_hdl, 2026 ring_desc, rx_desc); 2027 if (QDF_IS_STATUS_ERROR(status)) { 2028 if (qdf_unlikely(rx_desc && rx_desc->nbuf)) { 2029 qdf_assert_always(rx_desc->unmapped); 2030 qdf_nbuf_unmap_nbytes_single( 2031 soc->osdev, 2032 rx_desc->nbuf, 2033 QDF_DMA_FROM_DEVICE, 2034 RX_DATA_BUFFER_SIZE); 2035 rx_desc->unmapped = 1; 2036 qdf_nbuf_free(rx_desc->nbuf); 2037 dp_rx_add_to_free_desc_list( 2038 &head[rx_desc->pool_id], 2039 &tail[rx_desc->pool_id], 2040 rx_desc); 2041 } 2042 hal_srng_dst_get_next(hal_soc, hal_ring_hdl); 2043 continue; 2044 } 2045 2046 /* 2047 * this is a unlikely scenario where the host is reaping 2048 * a descriptor which it already reaped just a while ago 2049 * but is yet to replenish it back to HW. 2050 * In this case host will dump the last 128 descriptors 2051 * including the software descriptor rx_desc and assert. 2052 */ 2053 2054 if (qdf_unlikely(!rx_desc->in_use)) { 2055 DP_STATS_INC(soc, rx.err.hal_reo_dest_dup, 1); 2056 dp_info_rl("Reaping rx_desc not in use!"); 2057 dp_rx_dump_info_and_assert(soc, hal_ring_hdl, 2058 ring_desc, rx_desc); 2059 /* ignore duplicate RX desc and continue to process */ 2060 /* Pop out the descriptor */ 2061 hal_srng_dst_get_next(hal_soc, hal_ring_hdl); 2062 continue; 2063 } 2064 2065 dp_rx_desc_nbuf_sanity_check(ring_desc, rx_desc); 2066 2067 if (qdf_unlikely(!dp_rx_desc_check_magic(rx_desc))) { 2068 dp_err("Invalid rx_desc cookie=%d", rx_buf_cookie); 2069 DP_STATS_INC(soc, rx.err.rx_desc_invalid_magic, 1); 2070 dp_rx_dump_info_and_assert(soc, hal_ring_hdl, 2071 ring_desc, rx_desc); 2072 } 2073 2074 /* Get MPDU DESC info */ 2075 hal_rx_mpdu_desc_info_get(ring_desc, &mpdu_desc_info); 2076 2077 /* Get MSDU DESC info */ 2078 hal_rx_msdu_desc_info_get(ring_desc, &msdu_desc_info); 2079 2080 if (qdf_unlikely(msdu_desc_info.msdu_flags & 2081 HAL_MSDU_F_MSDU_CONTINUATION)) { 2082 /* previous msdu has end bit set, so current one is 2083 * the new MPDU 2084 */ 2085 if (is_prev_msdu_last) { 2086 /* Get number of entries available in HW ring */ 2087 num_entries_avail = 2088 hal_srng_dst_num_valid(hal_soc, 2089 hal_ring_hdl, 1); 2090 2091 /* For new MPDU check if we can read complete 2092 * MPDU by comparing the number of buffers 2093 * available and number of buffers needed to 2094 * reap this MPDU 2095 */ 2096 if (((msdu_desc_info.msdu_len / 2097 (RX_DATA_BUFFER_SIZE - RX_PKT_TLVS_LEN) + 2098 1)) > num_entries_avail) { 2099 DP_STATS_INC( 2100 soc, 2101 rx.msdu_scatter_wait_break, 2102 1); 2103 break; 2104 } 2105 is_prev_msdu_last = false; 2106 } 2107 2108 } 2109 2110 core_id = smp_processor_id(); 2111 DP_STATS_INC(soc, rx.ring_packets[core_id][ring_id], 1); 2112 2113 if (mpdu_desc_info.mpdu_flags & HAL_MPDU_F_RETRY_BIT) 2114 qdf_nbuf_set_rx_retry_flag(rx_desc->nbuf, 1); 2115 2116 if (qdf_unlikely(mpdu_desc_info.mpdu_flags & 2117 HAL_MPDU_F_RAW_AMPDU)) 2118 qdf_nbuf_set_raw_frame(rx_desc->nbuf, 1); 2119 2120 if (!is_prev_msdu_last && 2121 msdu_desc_info.msdu_flags & HAL_MSDU_F_LAST_MSDU_IN_MPDU) 2122 is_prev_msdu_last = true; 2123 2124 /* Pop out the descriptor*/ 2125 hal_srng_dst_get_next(hal_soc, hal_ring_hdl); 2126 2127 rx_bufs_reaped[rx_desc->pool_id]++; 2128 peer_mdata = mpdu_desc_info.peer_meta_data; 2129 QDF_NBUF_CB_RX_PEER_ID(rx_desc->nbuf) = 2130 DP_PEER_METADATA_PEER_ID_GET(peer_mdata); 2131 QDF_NBUF_CB_RX_VDEV_ID(rx_desc->nbuf) = 2132 DP_PEER_METADATA_VDEV_ID_GET(peer_mdata); 2133 2134 /* 2135 * save msdu flags first, last and continuation msdu in 2136 * nbuf->cb, also save mcbc, is_da_valid, is_sa_valid and 2137 * length to nbuf->cb. This ensures the info required for 2138 * per pkt processing is always in the same cache line. 2139 * This helps in improving throughput for smaller pkt 2140 * sizes. 2141 */ 2142 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_FIRST_MSDU_IN_MPDU) 2143 qdf_nbuf_set_rx_chfrag_start(rx_desc->nbuf, 1); 2144 2145 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_MSDU_CONTINUATION) 2146 qdf_nbuf_set_rx_chfrag_cont(rx_desc->nbuf, 1); 2147 2148 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_LAST_MSDU_IN_MPDU) 2149 qdf_nbuf_set_rx_chfrag_end(rx_desc->nbuf, 1); 2150 2151 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_DA_IS_MCBC) 2152 qdf_nbuf_set_da_mcbc(rx_desc->nbuf, 1); 2153 2154 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_DA_IS_VALID) 2155 qdf_nbuf_set_da_valid(rx_desc->nbuf, 1); 2156 2157 if (msdu_desc_info.msdu_flags & HAL_MSDU_F_SA_IS_VALID) 2158 qdf_nbuf_set_sa_valid(rx_desc->nbuf, 1); 2159 2160 qdf_nbuf_set_tid_val(rx_desc->nbuf, 2161 HAL_RX_REO_QUEUE_NUMBER_GET(ring_desc)); 2162 2163 QDF_NBUF_CB_RX_PKT_LEN(rx_desc->nbuf) = msdu_desc_info.msdu_len; 2164 2165 QDF_NBUF_CB_RX_CTX_ID(rx_desc->nbuf) = reo_ring_num; 2166 2167 /* 2168 * move unmap after scattered msdu waiting break logic 2169 * in case double skb unmap happened. 2170 */ 2171 rx_desc_pool = &soc->rx_desc_buf[rx_desc->pool_id]; 2172 qdf_nbuf_unmap_nbytes_single(soc->osdev, rx_desc->nbuf, 2173 QDF_DMA_FROM_DEVICE, 2174 rx_desc_pool->buf_size); 2175 rx_desc->unmapped = 1; 2176 DP_RX_LIST_APPEND(nbuf_head, nbuf_tail, rx_desc->nbuf); 2177 2178 /* 2179 * if continuation bit is set then we have MSDU spread 2180 * across multiple buffers, let us not decrement quota 2181 * till we reap all buffers of that MSDU. 2182 */ 2183 if (qdf_likely(!qdf_nbuf_is_rx_chfrag_cont(rx_desc->nbuf))) 2184 quota -= 1; 2185 2186 dp_rx_add_to_free_desc_list(&head[rx_desc->pool_id], 2187 &tail[rx_desc->pool_id], 2188 rx_desc); 2189 2190 num_rx_bufs_reaped++; 2191 /* 2192 * only if complete msdu is received for scatter case, 2193 * then allow break. 2194 */ 2195 if (is_prev_msdu_last && 2196 dp_rx_reap_loop_pkt_limit_hit(soc, num_rx_bufs_reaped)) 2197 break; 2198 } 2199 done: 2200 dp_rx_srng_access_end(int_ctx, soc, hal_ring_hdl); 2201 2202 for (mac_id = 0; mac_id < MAX_PDEV_CNT; mac_id++) { 2203 /* 2204 * continue with next mac_id if no pkts were reaped 2205 * from that pool 2206 */ 2207 if (!rx_bufs_reaped[mac_id]) 2208 continue; 2209 2210 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_id]; 2211 2212 rx_desc_pool = &soc->rx_desc_buf[mac_id]; 2213 2214 dp_rx_buffers_replenish(soc, mac_id, dp_rxdma_srng, 2215 rx_desc_pool, rx_bufs_reaped[mac_id], 2216 &head[mac_id], &tail[mac_id]); 2217 } 2218 2219 dp_verbose_debug("replenished %u\n", rx_bufs_reaped[0]); 2220 /* Peer can be NULL is case of LFR */ 2221 if (qdf_likely(peer)) 2222 vdev = NULL; 2223 2224 /* 2225 * BIG loop where each nbuf is dequeued from global queue, 2226 * processed and queued back on a per vdev basis. These nbufs 2227 * are sent to stack as and when we run out of nbufs 2228 * or a new nbuf dequeued from global queue has a different 2229 * vdev when compared to previous nbuf. 2230 */ 2231 nbuf = nbuf_head; 2232 while (nbuf) { 2233 next = nbuf->next; 2234 rx_tlv_hdr = qdf_nbuf_data(nbuf); 2235 vdev_id = QDF_NBUF_CB_RX_VDEV_ID(nbuf); 2236 2237 if (deliver_list_head && vdev && (vdev->vdev_id != vdev_id)) { 2238 dp_rx_deliver_to_stack(soc, vdev, peer, 2239 deliver_list_head, 2240 deliver_list_tail); 2241 deliver_list_head = NULL; 2242 deliver_list_tail = NULL; 2243 } 2244 2245 /* Get TID from struct cb->tid_val, save to tid */ 2246 if (qdf_nbuf_is_rx_chfrag_start(nbuf)) 2247 tid = qdf_nbuf_get_tid_val(nbuf); 2248 2249 peer_id = QDF_NBUF_CB_RX_PEER_ID(nbuf); 2250 peer = dp_peer_find_by_id(soc, peer_id); 2251 2252 if (peer) { 2253 QDF_NBUF_CB_DP_TRACE_PRINT(nbuf) = false; 2254 qdf_dp_trace_set_track(nbuf, QDF_RX); 2255 QDF_NBUF_CB_RX_DP_TRACE(nbuf) = 1; 2256 QDF_NBUF_CB_RX_PACKET_TRACK(nbuf) = 2257 QDF_NBUF_RX_PKT_DATA_TRACK; 2258 } 2259 2260 rx_bufs_used++; 2261 2262 if (qdf_likely(peer)) { 2263 vdev = peer->vdev; 2264 } else { 2265 nbuf->next = NULL; 2266 dp_rx_deliver_to_stack_no_peer(soc, nbuf); 2267 nbuf = next; 2268 continue; 2269 } 2270 2271 if (qdf_unlikely(!vdev)) { 2272 qdf_nbuf_free(nbuf); 2273 nbuf = next; 2274 DP_STATS_INC(soc, rx.err.invalid_vdev, 1); 2275 dp_peer_unref_del_find_by_id(peer); 2276 continue; 2277 } 2278 2279 rx_pdev = vdev->pdev; 2280 DP_RX_TID_SAVE(nbuf, tid); 2281 if (qdf_unlikely(rx_pdev->delay_stats_flag)) 2282 qdf_nbuf_set_timestamp(nbuf); 2283 2284 ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf); 2285 tid_stats = 2286 &rx_pdev->stats.tid_stats.tid_rx_stats[ring_id][tid]; 2287 2288 /* 2289 * Check if DMA completed -- msdu_done is the last bit 2290 * to be written 2291 */ 2292 if (qdf_unlikely(!qdf_nbuf_is_rx_chfrag_cont(nbuf) && 2293 !hal_rx_attn_msdu_done_get(rx_tlv_hdr))) { 2294 dp_err("MSDU DONE failure"); 2295 DP_STATS_INC(soc, rx.err.msdu_done_fail, 1); 2296 hal_rx_dump_pkt_tlvs(hal_soc, rx_tlv_hdr, 2297 QDF_TRACE_LEVEL_INFO); 2298 tid_stats->fail_cnt[MSDU_DONE_FAILURE]++; 2299 qdf_nbuf_free(nbuf); 2300 qdf_assert(0); 2301 nbuf = next; 2302 continue; 2303 } 2304 2305 DP_HIST_PACKET_COUNT_INC(vdev->pdev->pdev_id); 2306 /* 2307 * First IF condition: 2308 * 802.11 Fragmented pkts are reinjected to REO 2309 * HW block as SG pkts and for these pkts we only 2310 * need to pull the RX TLVS header length. 2311 * Second IF condition: 2312 * The below condition happens when an MSDU is spread 2313 * across multiple buffers. This can happen in two cases 2314 * 1. The nbuf size is smaller then the received msdu. 2315 * ex: we have set the nbuf size to 2048 during 2316 * nbuf_alloc. but we received an msdu which is 2317 * 2304 bytes in size then this msdu is spread 2318 * across 2 nbufs. 2319 * 2320 * 2. AMSDUs when RAW mode is enabled. 2321 * ex: 1st MSDU is in 1st nbuf and 2nd MSDU is spread 2322 * across 1st nbuf and 2nd nbuf and last MSDU is 2323 * spread across 2nd nbuf and 3rd nbuf. 2324 * 2325 * for these scenarios let us create a skb frag_list and 2326 * append these buffers till the last MSDU of the AMSDU 2327 * Third condition: 2328 * This is the most likely case, we receive 802.3 pkts 2329 * decapsulated by HW, here we need to set the pkt length. 2330 */ 2331 hal_rx_msdu_metadata_get(hal_soc, rx_tlv_hdr, &msdu_metadata); 2332 if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) { 2333 bool is_mcbc, is_sa_vld, is_da_vld; 2334 2335 is_mcbc = hal_rx_msdu_end_da_is_mcbc_get(soc->hal_soc, 2336 rx_tlv_hdr); 2337 is_sa_vld = 2338 hal_rx_msdu_end_sa_is_valid_get(soc->hal_soc, 2339 rx_tlv_hdr); 2340 is_da_vld = 2341 hal_rx_msdu_end_da_is_valid_get(soc->hal_soc, 2342 rx_tlv_hdr); 2343 2344 qdf_nbuf_set_da_mcbc(nbuf, is_mcbc); 2345 qdf_nbuf_set_da_valid(nbuf, is_da_vld); 2346 qdf_nbuf_set_sa_valid(nbuf, is_sa_vld); 2347 2348 qdf_nbuf_pull_head(nbuf, RX_PKT_TLVS_LEN); 2349 } else if (qdf_nbuf_is_rx_chfrag_cont(nbuf)) { 2350 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 2351 nbuf = dp_rx_sg_create(nbuf); 2352 next = nbuf->next; 2353 2354 if (qdf_nbuf_is_raw_frame(nbuf)) { 2355 DP_STATS_INC(vdev->pdev, rx_raw_pkts, 1); 2356 DP_STATS_INC_PKT(peer, rx.raw, 1, msdu_len); 2357 } else { 2358 qdf_nbuf_free(nbuf); 2359 DP_STATS_INC(soc, rx.err.scatter_msdu, 1); 2360 dp_info_rl("scatter msdu len %d, dropped", 2361 msdu_len); 2362 nbuf = next; 2363 dp_peer_unref_del_find_by_id(peer); 2364 continue; 2365 } 2366 } else { 2367 2368 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 2369 pkt_len = msdu_len + 2370 msdu_metadata.l3_hdr_pad + 2371 RX_PKT_TLVS_LEN; 2372 2373 qdf_nbuf_set_pktlen(nbuf, pkt_len); 2374 dp_rx_skip_tlvs(nbuf, msdu_metadata.l3_hdr_pad); 2375 } 2376 2377 /* 2378 * process frame for mulitpass phrase processing 2379 */ 2380 if (qdf_unlikely(vdev->multipass_en)) { 2381 if (dp_rx_multipass_process(peer, nbuf, tid) == false) { 2382 DP_STATS_INC(peer, rx.multipass_rx_pkt_drop, 1); 2383 qdf_nbuf_free(nbuf); 2384 nbuf = next; 2385 dp_peer_unref_del_find_by_id(peer); 2386 continue; 2387 } 2388 } 2389 2390 if (!dp_wds_rx_policy_check(rx_tlv_hdr, vdev, peer)) { 2391 QDF_TRACE(QDF_MODULE_ID_DP, 2392 QDF_TRACE_LEVEL_ERROR, 2393 FL("Policy Check Drop pkt")); 2394 tid_stats->fail_cnt[POLICY_CHECK_DROP]++; 2395 /* Drop & free packet */ 2396 qdf_nbuf_free(nbuf); 2397 /* Statistics */ 2398 nbuf = next; 2399 dp_peer_unref_del_find_by_id(peer); 2400 continue; 2401 } 2402 2403 if (qdf_unlikely(peer && (peer->nawds_enabled) && 2404 (qdf_nbuf_is_da_mcbc(nbuf)) && 2405 (hal_rx_get_mpdu_mac_ad4_valid(soc->hal_soc, 2406 rx_tlv_hdr) == 2407 false))) { 2408 tid_stats->fail_cnt[NAWDS_MCAST_DROP]++; 2409 DP_STATS_INC(peer, rx.nawds_mcast_drop, 1); 2410 qdf_nbuf_free(nbuf); 2411 nbuf = next; 2412 dp_peer_unref_del_find_by_id(peer); 2413 continue; 2414 } 2415 2416 if (soc->process_rx_status) 2417 dp_rx_cksum_offload(vdev->pdev, nbuf, rx_tlv_hdr); 2418 2419 /* Update the protocol tag in SKB based on CCE metadata */ 2420 dp_rx_update_protocol_tag(soc, vdev, nbuf, rx_tlv_hdr, 2421 reo_ring_num, false, true); 2422 2423 /* Update the flow tag in SKB based on FSE metadata */ 2424 dp_rx_update_flow_tag(soc, vdev, nbuf, rx_tlv_hdr, true); 2425 2426 dp_rx_msdu_stats_update(soc, nbuf, rx_tlv_hdr, peer, 2427 ring_id, tid_stats); 2428 2429 if (qdf_unlikely(vdev->mesh_vdev)) { 2430 if (dp_rx_filter_mesh_packets(vdev, nbuf, rx_tlv_hdr) 2431 == QDF_STATUS_SUCCESS) { 2432 QDF_TRACE(QDF_MODULE_ID_DP, 2433 QDF_TRACE_LEVEL_INFO_MED, 2434 FL("mesh pkt filtered")); 2435 tid_stats->fail_cnt[MESH_FILTER_DROP]++; 2436 DP_STATS_INC(vdev->pdev, dropped.mesh_filter, 2437 1); 2438 2439 qdf_nbuf_free(nbuf); 2440 nbuf = next; 2441 dp_peer_unref_del_find_by_id(peer); 2442 continue; 2443 } 2444 dp_rx_fill_mesh_stats(vdev, nbuf, rx_tlv_hdr, peer); 2445 } 2446 2447 if (qdf_likely(vdev->rx_decap_type == 2448 htt_cmn_pkt_type_ethernet) && 2449 qdf_likely(!vdev->mesh_vdev)) { 2450 /* WDS Destination Address Learning */ 2451 dp_rx_da_learn(soc, rx_tlv_hdr, peer, nbuf); 2452 2453 /* Due to HW issue, sometimes we see that the sa_idx 2454 * and da_idx are invalid with sa_valid and da_valid 2455 * bits set 2456 * 2457 * in this case we also see that value of 2458 * sa_sw_peer_id is set as 0 2459 * 2460 * Drop the packet if sa_idx and da_idx OOB or 2461 * sa_sw_peerid is 0 2462 */ 2463 if (!is_sa_da_idx_valid(soc, rx_tlv_hdr, nbuf, 2464 msdu_metadata)) { 2465 qdf_nbuf_free(nbuf); 2466 nbuf = next; 2467 DP_STATS_INC(soc, rx.err.invalid_sa_da_idx, 1); 2468 dp_peer_unref_del_find_by_id(peer); 2469 continue; 2470 } 2471 /* WDS Source Port Learning */ 2472 if (qdf_likely(vdev->wds_enabled)) 2473 dp_rx_wds_srcport_learn(soc, 2474 rx_tlv_hdr, 2475 peer, 2476 nbuf, 2477 msdu_metadata); 2478 2479 /* Intrabss-fwd */ 2480 if (dp_rx_check_ap_bridge(vdev)) 2481 if (dp_rx_intrabss_fwd(soc, 2482 peer, 2483 rx_tlv_hdr, 2484 nbuf, 2485 msdu_metadata)) { 2486 nbuf = next; 2487 dp_peer_unref_del_find_by_id(peer); 2488 tid_stats->intrabss_cnt++; 2489 continue; /* Get next desc */ 2490 } 2491 } 2492 2493 dp_rx_fill_gro_info(soc, rx_tlv_hdr, nbuf, &rx_ol_pkt_cnt); 2494 2495 DP_RX_LIST_APPEND(deliver_list_head, 2496 deliver_list_tail, 2497 nbuf); 2498 DP_STATS_INC_PKT(peer, rx.to_stack, 1, 2499 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 2500 2501 tid_stats->delivered_to_stack++; 2502 nbuf = next; 2503 dp_peer_unref_del_find_by_id(peer); 2504 } 2505 2506 if (qdf_likely(deliver_list_head)) { 2507 if (qdf_likely(peer)) 2508 dp_rx_deliver_to_stack(soc, vdev, peer, 2509 deliver_list_head, 2510 deliver_list_tail); 2511 else { 2512 nbuf = deliver_list_head; 2513 while (nbuf) { 2514 next = nbuf->next; 2515 nbuf->next = NULL; 2516 dp_rx_deliver_to_stack_no_peer(soc, nbuf); 2517 nbuf = next; 2518 } 2519 } 2520 } 2521 2522 if (dp_rx_enable_eol_data_check(soc) && rx_bufs_used) { 2523 if (quota) { 2524 num_pending = 2525 dp_rx_srng_get_num_pending(hal_soc, 2526 hal_ring_hdl, 2527 num_entries, 2528 &near_full); 2529 if (num_pending) { 2530 DP_STATS_INC(soc, rx.hp_oos2, 1); 2531 2532 if (!hif_exec_should_yield(scn, intr_id)) 2533 goto more_data; 2534 2535 if (qdf_unlikely(near_full)) { 2536 DP_STATS_INC(soc, rx.near_full, 1); 2537 goto more_data; 2538 } 2539 } 2540 } 2541 2542 if (vdev && vdev->osif_fisa_flush) 2543 vdev->osif_fisa_flush(soc, reo_ring_num); 2544 2545 if (vdev && vdev->osif_gro_flush && rx_ol_pkt_cnt) { 2546 vdev->osif_gro_flush(vdev->osif_vdev, 2547 reo_ring_num); 2548 } 2549 } 2550 2551 /* Update histogram statistics by looping through pdev's */ 2552 DP_RX_HIST_STATS_PER_PDEV(); 2553 2554 return rx_bufs_used; /* Assume no scale factor for now */ 2555 } 2556 2557 QDF_STATUS dp_rx_vdev_detach(struct dp_vdev *vdev) 2558 { 2559 QDF_STATUS ret; 2560 2561 if (vdev->osif_rx_flush) { 2562 ret = vdev->osif_rx_flush(vdev->osif_vdev, vdev->vdev_id); 2563 if (!QDF_IS_STATUS_SUCCESS(ret)) { 2564 dp_err("Failed to flush rx pkts for vdev %d\n", 2565 vdev->vdev_id); 2566 return ret; 2567 } 2568 } 2569 2570 return QDF_STATUS_SUCCESS; 2571 } 2572 2573 static QDF_STATUS 2574 dp_pdev_nbuf_alloc_and_map(struct dp_soc *dp_soc, qdf_nbuf_t *nbuf, 2575 struct dp_pdev *dp_pdev, 2576 struct rx_desc_pool *rx_desc_pool) 2577 { 2578 qdf_dma_addr_t paddr; 2579 QDF_STATUS ret = QDF_STATUS_E_FAILURE; 2580 2581 *nbuf = qdf_nbuf_alloc(dp_soc->osdev, rx_desc_pool->buf_size, 2582 RX_BUFFER_RESERVATION, 2583 rx_desc_pool->buf_alignment, FALSE); 2584 if (!(*nbuf)) { 2585 dp_err("nbuf alloc failed"); 2586 DP_STATS_INC(dp_pdev, replenish.nbuf_alloc_fail, 1); 2587 return ret; 2588 } 2589 2590 ret = qdf_nbuf_map_nbytes_single(dp_soc->osdev, *nbuf, 2591 QDF_DMA_FROM_DEVICE, 2592 rx_desc_pool->buf_size); 2593 2594 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 2595 qdf_nbuf_free(*nbuf); 2596 dp_err("nbuf map failed"); 2597 DP_STATS_INC(dp_pdev, replenish.map_err, 1); 2598 return ret; 2599 } 2600 2601 paddr = qdf_nbuf_get_frag_paddr(*nbuf, 0); 2602 2603 ret = check_x86_paddr(dp_soc, nbuf, &paddr, rx_desc_pool); 2604 if (ret == QDF_STATUS_E_FAILURE) { 2605 qdf_nbuf_unmap_nbytes_single(dp_soc->osdev, *nbuf, 2606 QDF_DMA_FROM_DEVICE, 2607 rx_desc_pool->buf_size); 2608 qdf_nbuf_free(*nbuf); 2609 dp_err("nbuf check x86 failed"); 2610 DP_STATS_INC(dp_pdev, replenish.x86_fail, 1); 2611 return ret; 2612 } 2613 2614 return QDF_STATUS_SUCCESS; 2615 } 2616 2617 QDF_STATUS 2618 dp_pdev_rx_buffers_attach(struct dp_soc *dp_soc, uint32_t mac_id, 2619 struct dp_srng *dp_rxdma_srng, 2620 struct rx_desc_pool *rx_desc_pool, 2621 uint32_t num_req_buffers) 2622 { 2623 struct dp_pdev *dp_pdev = dp_get_pdev_for_lmac_id(dp_soc, mac_id); 2624 hal_ring_handle_t rxdma_srng = dp_rxdma_srng->hal_srng; 2625 union dp_rx_desc_list_elem_t *next; 2626 void *rxdma_ring_entry; 2627 qdf_dma_addr_t paddr; 2628 qdf_nbuf_t *rx_nbuf_arr; 2629 uint32_t nr_descs, nr_nbuf = 0, nr_nbuf_total = 0; 2630 uint32_t buffer_index, nbuf_ptrs_per_page; 2631 qdf_nbuf_t nbuf; 2632 QDF_STATUS ret; 2633 int page_idx, total_pages; 2634 union dp_rx_desc_list_elem_t *desc_list = NULL; 2635 union dp_rx_desc_list_elem_t *tail = NULL; 2636 int sync_hw_ptr = 1; 2637 uint32_t num_entries_avail; 2638 2639 if (qdf_unlikely(!rxdma_srng)) { 2640 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 2641 return QDF_STATUS_E_FAILURE; 2642 } 2643 2644 dp_debug("requested %u RX buffers for driver attach", num_req_buffers); 2645 2646 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 2647 num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc, 2648 rxdma_srng, 2649 sync_hw_ptr); 2650 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 2651 2652 if (!num_entries_avail) { 2653 dp_err("Num of available entries is zero, nothing to do"); 2654 return QDF_STATUS_E_NOMEM; 2655 } 2656 2657 if (num_entries_avail < num_req_buffers) 2658 num_req_buffers = num_entries_avail; 2659 2660 nr_descs = dp_rx_get_free_desc_list(dp_soc, mac_id, rx_desc_pool, 2661 num_req_buffers, &desc_list, &tail); 2662 if (!nr_descs) { 2663 dp_err("no free rx_descs in freelist"); 2664 DP_STATS_INC(dp_pdev, err.desc_alloc_fail, num_req_buffers); 2665 return QDF_STATUS_E_NOMEM; 2666 } 2667 2668 dp_debug("got %u RX descs for driver attach", nr_descs); 2669 2670 /* 2671 * Try to allocate pointers to the nbuf one page at a time. 2672 * Take pointers that can fit in one page of memory and 2673 * iterate through the total descriptors that need to be 2674 * allocated in order of pages. Reuse the pointers that 2675 * have been allocated to fit in one page across each 2676 * iteration to index into the nbuf. 2677 */ 2678 total_pages = (nr_descs * sizeof(*rx_nbuf_arr)) / PAGE_SIZE; 2679 2680 /* 2681 * Add an extra page to store the remainder if any 2682 */ 2683 if ((nr_descs * sizeof(*rx_nbuf_arr)) % PAGE_SIZE) 2684 total_pages++; 2685 rx_nbuf_arr = qdf_mem_malloc(PAGE_SIZE); 2686 if (!rx_nbuf_arr) { 2687 dp_err("failed to allocate nbuf array"); 2688 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 2689 QDF_BUG(0); 2690 return QDF_STATUS_E_NOMEM; 2691 } 2692 nbuf_ptrs_per_page = PAGE_SIZE / sizeof(*rx_nbuf_arr); 2693 2694 for (page_idx = 0; page_idx < total_pages; page_idx++) { 2695 qdf_mem_zero(rx_nbuf_arr, PAGE_SIZE); 2696 2697 for (nr_nbuf = 0; nr_nbuf < nbuf_ptrs_per_page; nr_nbuf++) { 2698 /* 2699 * The last page of buffer pointers may not be required 2700 * completely based on the number of descriptors. Below 2701 * check will ensure we are allocating only the 2702 * required number of descriptors. 2703 */ 2704 if (nr_nbuf_total >= nr_descs) 2705 break; 2706 ret = dp_pdev_nbuf_alloc_and_map(dp_soc, 2707 &rx_nbuf_arr[nr_nbuf], 2708 dp_pdev, rx_desc_pool); 2709 if (QDF_IS_STATUS_ERROR(ret)) 2710 break; 2711 2712 nr_nbuf_total++; 2713 } 2714 2715 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 2716 2717 for (buffer_index = 0; buffer_index < nr_nbuf; buffer_index++) { 2718 rxdma_ring_entry = 2719 hal_srng_src_get_next(dp_soc->hal_soc, 2720 rxdma_srng); 2721 qdf_assert_always(rxdma_ring_entry); 2722 2723 next = desc_list->next; 2724 nbuf = rx_nbuf_arr[buffer_index]; 2725 paddr = qdf_nbuf_get_frag_paddr(nbuf, 0); 2726 2727 dp_rx_desc_prep(&desc_list->rx_desc, nbuf); 2728 desc_list->rx_desc.in_use = 1; 2729 dp_rx_desc_alloc_dbg_info(&desc_list->rx_desc); 2730 dp_rx_desc_update_dbg_info(&desc_list->rx_desc, 2731 __func__, 2732 RX_DESC_REPLENISHED); 2733 2734 hal_rxdma_buff_addr_info_set(rxdma_ring_entry, paddr, 2735 desc_list->rx_desc.cookie, 2736 rx_desc_pool->owner); 2737 2738 dp_ipa_handle_rx_buf_smmu_mapping(dp_soc, nbuf, true); 2739 2740 desc_list = next; 2741 } 2742 2743 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 2744 } 2745 2746 dp_info("filled %u RX buffers for driver attach", nr_nbuf_total); 2747 qdf_mem_free(rx_nbuf_arr); 2748 2749 if (!nr_nbuf_total) { 2750 dp_err("No nbuf's allocated"); 2751 QDF_BUG(0); 2752 return QDF_STATUS_E_RESOURCES; 2753 } 2754 2755 /* No need to count the number of bytes received during replenish. 2756 * Therefore set replenish.pkts.bytes as 0. 2757 */ 2758 DP_STATS_INC_PKT(dp_pdev, replenish.pkts, nr_nbuf, 0); 2759 2760 return QDF_STATUS_SUCCESS; 2761 } 2762 2763 /* 2764 * dp_rx_pdev_desc_pool_alloc() - allocate memory for software rx descriptor 2765 * pool 2766 * 2767 * @pdev: core txrx pdev context 2768 * 2769 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2770 * QDF_STATUS_E_NOMEM 2771 */ 2772 QDF_STATUS 2773 dp_rx_pdev_desc_pool_alloc(struct dp_pdev *pdev) 2774 { 2775 struct dp_soc *soc = pdev->soc; 2776 uint32_t rxdma_entries; 2777 uint32_t rx_sw_desc_weight; 2778 struct dp_srng *dp_rxdma_srng; 2779 struct rx_desc_pool *rx_desc_pool; 2780 uint32_t status = QDF_STATUS_SUCCESS; 2781 int mac_for_pdev; 2782 2783 mac_for_pdev = pdev->lmac_id; 2784 if (wlan_cfg_get_dp_pdev_nss_enabled(pdev->wlan_cfg_ctx)) { 2785 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO, 2786 "nss-wifi<4> skip Rx refil %d", mac_for_pdev); 2787 return status; 2788 } 2789 2790 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2791 rxdma_entries = dp_rxdma_srng->num_entries; 2792 2793 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2794 rx_sw_desc_weight = wlan_cfg_get_dp_soc_rx_sw_desc_weight(soc->wlan_cfg_ctx); 2795 2796 status = dp_rx_desc_pool_alloc(soc, 2797 rx_sw_desc_weight * rxdma_entries, 2798 rx_desc_pool); 2799 if (status != QDF_STATUS_SUCCESS) 2800 return status; 2801 2802 return status; 2803 } 2804 2805 /* 2806 * dp_rx_pdev_desc_pool_free() - free software rx descriptor pool 2807 * 2808 * @pdev: core txrx pdev context 2809 */ 2810 void dp_rx_pdev_desc_pool_free(struct dp_pdev *pdev) 2811 { 2812 int mac_for_pdev = pdev->lmac_id; 2813 struct dp_soc *soc = pdev->soc; 2814 struct rx_desc_pool *rx_desc_pool; 2815 2816 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2817 2818 dp_rx_desc_pool_free(soc, rx_desc_pool); 2819 } 2820 2821 /* 2822 * dp_rx_pdev_desc_pool_init() - initialize software rx descriptors 2823 * 2824 * @pdev: core txrx pdev context 2825 * 2826 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2827 * QDF_STATUS_E_NOMEM 2828 */ 2829 QDF_STATUS dp_rx_pdev_desc_pool_init(struct dp_pdev *pdev) 2830 { 2831 int mac_for_pdev = pdev->lmac_id; 2832 struct dp_soc *soc = pdev->soc; 2833 uint32_t rxdma_entries; 2834 uint32_t rx_sw_desc_weight; 2835 struct dp_srng *dp_rxdma_srng; 2836 struct rx_desc_pool *rx_desc_pool; 2837 2838 if (wlan_cfg_get_dp_pdev_nss_enabled(pdev->wlan_cfg_ctx)) { 2839 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO, 2840 "nss-wifi<4> skip Rx refil %d", mac_for_pdev); 2841 return QDF_STATUS_SUCCESS; 2842 } 2843 2844 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2845 if (dp_rx_desc_pool_is_allocated(rx_desc_pool) == QDF_STATUS_E_NOMEM) 2846 return QDF_STATUS_E_NOMEM; 2847 2848 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2849 rxdma_entries = dp_rxdma_srng->num_entries; 2850 2851 soc->process_rx_status = CONFIG_PROCESS_RX_STATUS; 2852 2853 rx_sw_desc_weight = 2854 wlan_cfg_get_dp_soc_rx_sw_desc_weight(soc->wlan_cfg_ctx); 2855 2856 rx_desc_pool->owner = DP_WBM2SW_RBM; 2857 rx_desc_pool->buf_size = RX_DATA_BUFFER_SIZE; 2858 rx_desc_pool->buf_alignment = RX_DATA_BUFFER_ALIGNMENT; 2859 2860 dp_rx_desc_pool_init(soc, mac_for_pdev, 2861 rx_sw_desc_weight * rxdma_entries, 2862 rx_desc_pool); 2863 return QDF_STATUS_SUCCESS; 2864 } 2865 2866 /* 2867 * dp_rx_pdev_desc_pool_deinit() - de-initialize software rx descriptor pools 2868 * @pdev: core txrx pdev context 2869 * 2870 * This function resets the freelist of rx descriptors and destroys locks 2871 * associated with this list of descriptors. 2872 */ 2873 void dp_rx_pdev_desc_pool_deinit(struct dp_pdev *pdev) 2874 { 2875 int mac_for_pdev = pdev->lmac_id; 2876 struct dp_soc *soc = pdev->soc; 2877 struct rx_desc_pool *rx_desc_pool; 2878 2879 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2880 2881 dp_rx_desc_pool_deinit(soc, rx_desc_pool); 2882 } 2883 2884 /* 2885 * dp_rx_pdev_buffers_alloc() - Allocate nbufs (skbs) and replenish RxDMA ring 2886 * 2887 * @pdev: core txrx pdev context 2888 * 2889 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2890 * QDF_STATUS_E_NOMEM 2891 */ 2892 QDF_STATUS 2893 dp_rx_pdev_buffers_alloc(struct dp_pdev *pdev) 2894 { 2895 int mac_for_pdev = pdev->lmac_id; 2896 struct dp_soc *soc = pdev->soc; 2897 struct dp_srng *dp_rxdma_srng; 2898 struct rx_desc_pool *rx_desc_pool; 2899 uint32_t rxdma_entries; 2900 2901 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2902 rxdma_entries = dp_rxdma_srng->num_entries; 2903 2904 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2905 2906 return dp_pdev_rx_buffers_attach(soc, mac_for_pdev, dp_rxdma_srng, 2907 rx_desc_pool, rxdma_entries - 1); 2908 } 2909 2910 /* 2911 * dp_rx_pdev_buffers_free - Free nbufs (skbs) 2912 * 2913 * @pdev: core txrx pdev context 2914 */ 2915 void 2916 dp_rx_pdev_buffers_free(struct dp_pdev *pdev) 2917 { 2918 int mac_for_pdev = pdev->lmac_id; 2919 struct dp_soc *soc = pdev->soc; 2920 struct rx_desc_pool *rx_desc_pool; 2921 2922 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2923 2924 dp_rx_desc_nbuf_free(soc, rx_desc_pool); 2925 } 2926 2927 /* 2928 * dp_rx_nbuf_prepare() - prepare RX nbuf 2929 * @soc: core txrx main context 2930 * @pdev: core txrx pdev context 2931 * 2932 * This function alloc & map nbuf for RX dma usage, retry it if failed 2933 * until retry times reaches max threshold or succeeded. 2934 * 2935 * Return: qdf_nbuf_t pointer if succeeded, NULL if failed. 2936 */ 2937 qdf_nbuf_t 2938 dp_rx_nbuf_prepare(struct dp_soc *soc, struct dp_pdev *pdev) 2939 { 2940 uint8_t *buf; 2941 int32_t nbuf_retry_count; 2942 QDF_STATUS ret; 2943 qdf_nbuf_t nbuf = NULL; 2944 2945 for (nbuf_retry_count = 0; nbuf_retry_count < 2946 QDF_NBUF_ALLOC_MAP_RETRY_THRESHOLD; 2947 nbuf_retry_count++) { 2948 /* Allocate a new skb */ 2949 nbuf = qdf_nbuf_alloc(soc->osdev, 2950 RX_DATA_BUFFER_SIZE, 2951 RX_BUFFER_RESERVATION, 2952 RX_DATA_BUFFER_ALIGNMENT, 2953 FALSE); 2954 2955 if (!nbuf) { 2956 DP_STATS_INC(pdev, 2957 replenish.nbuf_alloc_fail, 1); 2958 continue; 2959 } 2960 2961 buf = qdf_nbuf_data(nbuf); 2962 2963 memset(buf, 0, RX_DATA_BUFFER_SIZE); 2964 2965 ret = qdf_nbuf_map_nbytes_single(soc->osdev, nbuf, 2966 QDF_DMA_FROM_DEVICE, 2967 RX_DATA_BUFFER_SIZE); 2968 2969 /* nbuf map failed */ 2970 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 2971 qdf_nbuf_free(nbuf); 2972 DP_STATS_INC(pdev, replenish.map_err, 1); 2973 continue; 2974 } 2975 /* qdf_nbuf alloc and map succeeded */ 2976 break; 2977 } 2978 2979 /* qdf_nbuf still alloc or map failed */ 2980 if (qdf_unlikely(nbuf_retry_count >= 2981 QDF_NBUF_ALLOC_MAP_RETRY_THRESHOLD)) 2982 return NULL; 2983 2984 return nbuf; 2985 } 2986 2987 #ifdef DP_RX_SPECIAL_FRAME_NEED 2988 bool dp_rx_deliver_special_frame(struct dp_soc *soc, struct dp_peer *peer, 2989 qdf_nbuf_t nbuf, uint32_t frame_mask, 2990 uint8_t *rx_tlv_hdr) 2991 { 2992 uint32_t l2_hdr_offset = 0; 2993 uint16_t msdu_len = 0; 2994 uint32_t skip_len; 2995 2996 l2_hdr_offset = 2997 hal_rx_msdu_end_l3_hdr_padding_get(soc->hal_soc, rx_tlv_hdr); 2998 2999 if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) { 3000 skip_len = l2_hdr_offset; 3001 } else { 3002 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 3003 skip_len = l2_hdr_offset + RX_PKT_TLVS_LEN; 3004 qdf_nbuf_set_pktlen(nbuf, msdu_len + skip_len); 3005 } 3006 3007 QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(nbuf) = 1; 3008 dp_rx_set_hdr_pad(nbuf, l2_hdr_offset); 3009 qdf_nbuf_pull_head(nbuf, skip_len); 3010 3011 if (dp_rx_is_special_frame(nbuf, frame_mask)) { 3012 qdf_nbuf_set_exc_frame(nbuf, 1); 3013 dp_rx_deliver_to_stack(soc, peer->vdev, peer, 3014 nbuf, NULL); 3015 return true; 3016 } 3017 3018 return false; 3019 } 3020 #endif 3021