1 /* 2 * Copyright (c) 2016-2021 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_tx.h" 23 #include "dp_peer.h" 24 #include "hal_rx.h" 25 #include "hal_api.h" 26 #include "qdf_nbuf.h" 27 #ifdef MESH_MODE_SUPPORT 28 #include "if_meta_hdr.h" 29 #endif 30 #include "dp_internal.h" 31 #include "dp_ipa.h" 32 #include "dp_hist.h" 33 #include "dp_rx_buffer_pool.h" 34 #ifdef WIFI_MONITOR_SUPPORT 35 #include "dp_htt.h" 36 #include <dp_mon.h> 37 #endif 38 #ifdef FEATURE_WDS 39 #include "dp_txrx_wds.h" 40 #endif 41 42 #ifdef DUP_RX_DESC_WAR 43 void dp_rx_dump_info_and_assert(struct dp_soc *soc, 44 hal_ring_handle_t hal_ring, 45 hal_ring_desc_t ring_desc, 46 struct dp_rx_desc *rx_desc) 47 { 48 void *hal_soc = soc->hal_soc; 49 50 hal_srng_dump_ring_desc(hal_soc, hal_ring, ring_desc); 51 dp_rx_desc_dump(rx_desc); 52 } 53 #else 54 void dp_rx_dump_info_and_assert(struct dp_soc *soc, 55 hal_ring_handle_t hal_ring_hdl, 56 hal_ring_desc_t ring_desc, 57 struct dp_rx_desc *rx_desc) 58 { 59 hal_soc_handle_t hal_soc = soc->hal_soc; 60 61 dp_rx_desc_dump(rx_desc); 62 hal_srng_dump_ring_desc(hal_soc, hal_ring_hdl, ring_desc); 63 hal_srng_dump_ring(hal_soc, hal_ring_hdl); 64 qdf_assert_always(0); 65 } 66 #endif 67 68 #ifndef QCA_HOST_MODE_WIFI_DISABLED 69 #ifdef RX_DESC_SANITY_WAR 70 QDF_STATUS dp_rx_desc_sanity(struct dp_soc *soc, hal_soc_handle_t hal_soc, 71 hal_ring_handle_t hal_ring_hdl, 72 hal_ring_desc_t ring_desc, 73 struct dp_rx_desc *rx_desc) 74 { 75 uint8_t return_buffer_manager; 76 77 if (qdf_unlikely(!rx_desc)) { 78 /* 79 * This is an unlikely case where the cookie obtained 80 * from the ring_desc is invalid and hence we are not 81 * able to find the corresponding rx_desc 82 */ 83 goto fail; 84 } 85 86 return_buffer_manager = hal_rx_ret_buf_manager_get(hal_soc, ring_desc); 87 if (qdf_unlikely(!(return_buffer_manager == 88 HAL_RX_BUF_RBM_SW1_BM(soc->wbm_sw0_bm_id) || 89 return_buffer_manager == 90 HAL_RX_BUF_RBM_SW3_BM(soc->wbm_sw0_bm_id)))) { 91 goto fail; 92 } 93 94 return QDF_STATUS_SUCCESS; 95 96 fail: 97 DP_STATS_INC(soc, rx.err.invalid_cookie, 1); 98 dp_err("Ring Desc:"); 99 hal_srng_dump_ring_desc(hal_soc, hal_ring_hdl, 100 ring_desc); 101 return QDF_STATUS_E_NULL_VALUE; 102 103 } 104 #endif 105 #endif /* QCA_HOST_MODE_WIFI_DISABLED */ 106 107 /** 108 * dp_pdev_frag_alloc_and_map() - Allocate frag for desc buffer and map 109 * 110 * @dp_soc: struct dp_soc * 111 * @nbuf_frag_info_t: nbuf frag info 112 * @dp_pdev: struct dp_pdev * 113 * @rx_desc_pool: Rx desc pool 114 * 115 * Return: QDF_STATUS 116 */ 117 #ifdef DP_RX_MON_MEM_FRAG 118 static inline QDF_STATUS 119 dp_pdev_frag_alloc_and_map(struct dp_soc *dp_soc, 120 struct dp_rx_nbuf_frag_info *nbuf_frag_info_t, 121 struct dp_pdev *dp_pdev, 122 struct rx_desc_pool *rx_desc_pool) 123 { 124 QDF_STATUS ret = QDF_STATUS_E_FAILURE; 125 126 (nbuf_frag_info_t->virt_addr).vaddr = 127 qdf_frag_alloc(rx_desc_pool->buf_size); 128 129 if (!((nbuf_frag_info_t->virt_addr).vaddr)) { 130 dp_err("Frag alloc failed"); 131 DP_STATS_INC(dp_pdev, replenish.frag_alloc_fail, 1); 132 return QDF_STATUS_E_NOMEM; 133 } 134 135 ret = qdf_mem_map_page(dp_soc->osdev, 136 (nbuf_frag_info_t->virt_addr).vaddr, 137 QDF_DMA_FROM_DEVICE, 138 rx_desc_pool->buf_size, 139 &nbuf_frag_info_t->paddr); 140 141 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 142 qdf_frag_free((nbuf_frag_info_t->virt_addr).vaddr); 143 dp_err("Frag map failed"); 144 DP_STATS_INC(dp_pdev, replenish.map_err, 1); 145 return QDF_STATUS_E_FAULT; 146 } 147 148 return QDF_STATUS_SUCCESS; 149 } 150 #else 151 static inline QDF_STATUS 152 dp_pdev_frag_alloc_and_map(struct dp_soc *dp_soc, 153 struct dp_rx_nbuf_frag_info *nbuf_frag_info_t, 154 struct dp_pdev *dp_pdev, 155 struct rx_desc_pool *rx_desc_pool) 156 { 157 return QDF_STATUS_SUCCESS; 158 } 159 #endif /* DP_RX_MON_MEM_FRAG */ 160 161 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY 162 /** 163 * dp_rx_refill_ring_record_entry() - Record an entry into refill_ring history 164 * @soc: Datapath soc structure 165 * @ring_num: Refill ring number 166 * @num_req: number of buffers requested for refill 167 * @num_refill: number of buffers refilled 168 * 169 * Returns: None 170 */ 171 static inline void 172 dp_rx_refill_ring_record_entry(struct dp_soc *soc, uint8_t ring_num, 173 hal_ring_handle_t hal_ring_hdl, 174 uint32_t num_req, uint32_t num_refill) 175 { 176 struct dp_refill_info_record *record; 177 uint32_t idx; 178 uint32_t tp; 179 uint32_t hp; 180 181 if (qdf_unlikely(ring_num >= MAX_PDEV_CNT || 182 !soc->rx_refill_ring_history[ring_num])) 183 return; 184 185 idx = dp_history_get_next_index(&soc->rx_refill_ring_history[ring_num]->index, 186 DP_RX_REFILL_HIST_MAX); 187 188 /* No NULL check needed for record since its an array */ 189 record = &soc->rx_refill_ring_history[ring_num]->entry[idx]; 190 191 hal_get_sw_hptp(soc->hal_soc, hal_ring_hdl, &tp, &hp); 192 record->timestamp = qdf_get_log_timestamp(); 193 record->num_req = num_req; 194 record->num_refill = num_refill; 195 record->hp = hp; 196 record->tp = tp; 197 } 198 #else 199 static inline void 200 dp_rx_refill_ring_record_entry(struct dp_soc *soc, uint8_t ring_num, 201 hal_ring_handle_t hal_ring_hdl, 202 uint32_t num_req, uint32_t num_refill) 203 { 204 } 205 #endif 206 207 /** 208 * dp_pdev_nbuf_alloc_and_map() - Allocate nbuf for desc buffer and map 209 * 210 * @dp_soc: struct dp_soc * 211 * @mac_id: Mac id 212 * @num_entries_avail: num_entries_avail 213 * @nbuf_frag_info_t: nbuf frag info 214 * @dp_pdev: struct dp_pdev * 215 * @rx_desc_pool: Rx desc pool 216 * 217 * Return: QDF_STATUS 218 */ 219 static inline QDF_STATUS 220 dp_pdev_nbuf_alloc_and_map_replenish(struct dp_soc *dp_soc, 221 uint32_t mac_id, 222 uint32_t num_entries_avail, 223 struct dp_rx_nbuf_frag_info *nbuf_frag_info_t, 224 struct dp_pdev *dp_pdev, 225 struct rx_desc_pool *rx_desc_pool) 226 { 227 QDF_STATUS ret = QDF_STATUS_E_FAILURE; 228 229 (nbuf_frag_info_t->virt_addr).nbuf = 230 dp_rx_buffer_pool_nbuf_alloc(dp_soc, 231 mac_id, 232 rx_desc_pool, 233 num_entries_avail); 234 if (!((nbuf_frag_info_t->virt_addr).nbuf)) { 235 dp_err("nbuf alloc failed"); 236 DP_STATS_INC(dp_pdev, replenish.nbuf_alloc_fail, 1); 237 return QDF_STATUS_E_NOMEM; 238 } 239 240 ret = dp_rx_buffer_pool_nbuf_map(dp_soc, rx_desc_pool, 241 nbuf_frag_info_t); 242 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 243 dp_rx_buffer_pool_nbuf_free(dp_soc, 244 (nbuf_frag_info_t->virt_addr).nbuf, mac_id); 245 dp_err("nbuf map failed"); 246 DP_STATS_INC(dp_pdev, replenish.map_err, 1); 247 return QDF_STATUS_E_FAULT; 248 } 249 250 nbuf_frag_info_t->paddr = 251 qdf_nbuf_get_frag_paddr((nbuf_frag_info_t->virt_addr).nbuf, 0); 252 253 dp_ipa_handle_rx_buf_smmu_mapping(dp_soc, 254 (qdf_nbuf_t)((nbuf_frag_info_t->virt_addr).nbuf), 255 rx_desc_pool->buf_size, 256 true); 257 258 ret = dp_check_paddr(dp_soc, &((nbuf_frag_info_t->virt_addr).nbuf), 259 &nbuf_frag_info_t->paddr, 260 rx_desc_pool); 261 if (ret == QDF_STATUS_E_FAILURE) { 262 DP_STATS_INC(dp_pdev, replenish.x86_fail, 1); 263 return QDF_STATUS_E_ADDRNOTAVAIL; 264 } 265 266 return QDF_STATUS_SUCCESS; 267 } 268 269 /* 270 * dp_rx_buffers_replenish() - replenish rxdma ring with rx nbufs 271 * called during dp rx initialization 272 * and at the end of dp_rx_process. 273 * 274 * @soc: core txrx main context 275 * @mac_id: mac_id which is one of 3 mac_ids 276 * @dp_rxdma_srng: dp rxdma circular ring 277 * @rx_desc_pool: Pointer to free Rx descriptor pool 278 * @num_req_buffers: number of buffer to be replenished 279 * @desc_list: list of descs if called from dp_rx_process 280 * or NULL during dp rx initialization or out of buffer 281 * interrupt. 282 * @tail: tail of descs list 283 * @func_name: name of the caller function 284 * Return: return success or failure 285 */ 286 QDF_STATUS __dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id, 287 struct dp_srng *dp_rxdma_srng, 288 struct rx_desc_pool *rx_desc_pool, 289 uint32_t num_req_buffers, 290 union dp_rx_desc_list_elem_t **desc_list, 291 union dp_rx_desc_list_elem_t **tail, 292 const char *func_name) 293 { 294 uint32_t num_alloc_desc; 295 uint16_t num_desc_to_free = 0; 296 struct dp_pdev *dp_pdev = dp_get_pdev_for_lmac_id(dp_soc, mac_id); 297 uint32_t num_entries_avail; 298 uint32_t count; 299 int sync_hw_ptr = 1; 300 struct dp_rx_nbuf_frag_info nbuf_frag_info = {0}; 301 void *rxdma_ring_entry; 302 union dp_rx_desc_list_elem_t *next; 303 QDF_STATUS ret; 304 void *rxdma_srng; 305 306 rxdma_srng = dp_rxdma_srng->hal_srng; 307 308 if (qdf_unlikely(!dp_pdev)) { 309 dp_rx_err("%pK: pdev is null for mac_id = %d", 310 dp_soc, mac_id); 311 return QDF_STATUS_E_FAILURE; 312 } 313 314 if (qdf_unlikely(!rxdma_srng)) { 315 dp_rx_debug("%pK: rxdma srng not initialized", dp_soc); 316 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 317 return QDF_STATUS_E_FAILURE; 318 } 319 320 dp_rx_debug("%pK: requested %d buffers for replenish", 321 dp_soc, num_req_buffers); 322 323 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 324 325 num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc, 326 rxdma_srng, 327 sync_hw_ptr); 328 329 dp_rx_debug("%pK: no of available entries in rxdma ring: %d", 330 dp_soc, num_entries_avail); 331 332 if (!(*desc_list) && (num_entries_avail > 333 ((dp_rxdma_srng->num_entries * 3) / 4))) { 334 num_req_buffers = num_entries_avail; 335 } else if (num_entries_avail < num_req_buffers) { 336 num_desc_to_free = num_req_buffers - num_entries_avail; 337 num_req_buffers = num_entries_avail; 338 } 339 340 if (qdf_unlikely(!num_req_buffers)) { 341 num_desc_to_free = num_req_buffers; 342 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 343 goto free_descs; 344 } 345 346 /* 347 * if desc_list is NULL, allocate the descs from freelist 348 */ 349 if (!(*desc_list)) { 350 num_alloc_desc = dp_rx_get_free_desc_list(dp_soc, mac_id, 351 rx_desc_pool, 352 num_req_buffers, 353 desc_list, 354 tail); 355 356 if (!num_alloc_desc) { 357 dp_rx_err("%pK: no free rx_descs in freelist", dp_soc); 358 DP_STATS_INC(dp_pdev, err.desc_alloc_fail, 359 num_req_buffers); 360 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 361 return QDF_STATUS_E_NOMEM; 362 } 363 364 dp_rx_debug("%pK: %d rx desc allocated", dp_soc, num_alloc_desc); 365 num_req_buffers = num_alloc_desc; 366 } 367 368 369 count = 0; 370 371 while (count < num_req_buffers) { 372 /* Flag is set while pdev rx_desc_pool initialization */ 373 if (qdf_unlikely(rx_desc_pool->rx_mon_dest_frag_enable)) 374 ret = dp_pdev_frag_alloc_and_map(dp_soc, 375 &nbuf_frag_info, 376 dp_pdev, 377 rx_desc_pool); 378 else 379 ret = dp_pdev_nbuf_alloc_and_map_replenish(dp_soc, 380 mac_id, 381 num_entries_avail, &nbuf_frag_info, 382 dp_pdev, rx_desc_pool); 383 384 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 385 if (qdf_unlikely(ret == QDF_STATUS_E_FAULT)) 386 continue; 387 break; 388 } 389 390 count++; 391 392 rxdma_ring_entry = hal_srng_src_get_next(dp_soc->hal_soc, 393 rxdma_srng); 394 qdf_assert_always(rxdma_ring_entry); 395 396 next = (*desc_list)->next; 397 398 /* Flag is set while pdev rx_desc_pool initialization */ 399 if (qdf_unlikely(rx_desc_pool->rx_mon_dest_frag_enable)) 400 dp_rx_desc_frag_prep(&((*desc_list)->rx_desc), 401 &nbuf_frag_info); 402 else 403 dp_rx_desc_prep(&((*desc_list)->rx_desc), 404 &nbuf_frag_info); 405 406 /* rx_desc.in_use should be zero at this time*/ 407 qdf_assert_always((*desc_list)->rx_desc.in_use == 0); 408 409 (*desc_list)->rx_desc.in_use = 1; 410 (*desc_list)->rx_desc.in_err_state = 0; 411 dp_rx_desc_update_dbg_info(&(*desc_list)->rx_desc, 412 func_name, RX_DESC_REPLENISHED); 413 dp_verbose_debug("rx_netbuf=%pK, paddr=0x%llx, cookie=%d", 414 nbuf_frag_info.virt_addr.nbuf, 415 (unsigned long long)(nbuf_frag_info.paddr), 416 (*desc_list)->rx_desc.cookie); 417 418 hal_rxdma_buff_addr_info_set(dp_soc->hal_soc, rxdma_ring_entry, 419 nbuf_frag_info.paddr, 420 (*desc_list)->rx_desc.cookie, 421 rx_desc_pool->owner); 422 423 *desc_list = next; 424 425 } 426 427 dp_rx_refill_ring_record_entry(dp_soc, dp_pdev->lmac_id, rxdma_srng, 428 num_req_buffers, count); 429 430 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 431 432 dp_rx_schedule_refill_thread(dp_soc); 433 434 dp_verbose_debug("replenished buffers %d, rx desc added back to free list %u", 435 count, num_desc_to_free); 436 437 /* No need to count the number of bytes received during replenish. 438 * Therefore set replenish.pkts.bytes as 0. 439 */ 440 DP_STATS_INC_PKT(dp_pdev, replenish.pkts, count, 0); 441 442 free_descs: 443 DP_STATS_INC(dp_pdev, buf_freelist, num_desc_to_free); 444 /* 445 * add any available free desc back to the free list 446 */ 447 if (*desc_list) 448 dp_rx_add_desc_list_to_free_list(dp_soc, desc_list, tail, 449 mac_id, rx_desc_pool); 450 451 return QDF_STATUS_SUCCESS; 452 } 453 454 qdf_export_symbol(__dp_rx_buffers_replenish); 455 456 /* 457 * dp_rx_deliver_raw() - process RAW mode pkts and hand over the 458 * pkts to RAW mode simulation to 459 * decapsulate the pkt. 460 * 461 * @vdev: vdev on which RAW mode is enabled 462 * @nbuf_list: list of RAW pkts to process 463 * @peer: peer object from which the pkt is rx 464 * 465 * Return: void 466 */ 467 void 468 dp_rx_deliver_raw(struct dp_vdev *vdev, qdf_nbuf_t nbuf_list, 469 struct dp_peer *peer) 470 { 471 qdf_nbuf_t deliver_list_head = NULL; 472 qdf_nbuf_t deliver_list_tail = NULL; 473 qdf_nbuf_t nbuf; 474 475 nbuf = nbuf_list; 476 while (nbuf) { 477 qdf_nbuf_t next = qdf_nbuf_next(nbuf); 478 479 DP_RX_LIST_APPEND(deliver_list_head, deliver_list_tail, nbuf); 480 481 DP_STATS_INC(vdev->pdev, rx_raw_pkts, 1); 482 DP_STATS_INC_PKT(peer, rx.raw, 1, qdf_nbuf_len(nbuf)); 483 /* 484 * reset the chfrag_start and chfrag_end bits in nbuf cb 485 * as this is a non-amsdu pkt and RAW mode simulation expects 486 * these bit s to be 0 for non-amsdu pkt. 487 */ 488 if (qdf_nbuf_is_rx_chfrag_start(nbuf) && 489 qdf_nbuf_is_rx_chfrag_end(nbuf)) { 490 qdf_nbuf_set_rx_chfrag_start(nbuf, 0); 491 qdf_nbuf_set_rx_chfrag_end(nbuf, 0); 492 } 493 494 nbuf = next; 495 } 496 497 vdev->osif_rsim_rx_decap(vdev->osif_vdev, &deliver_list_head, 498 &deliver_list_tail, peer->mac_addr.raw); 499 500 vdev->osif_rx(vdev->osif_vdev, deliver_list_head); 501 } 502 503 #ifndef QCA_HOST_MODE_WIFI_DISABLED 504 505 #ifndef FEATURE_WDS 506 void dp_rx_da_learn(struct dp_soc *soc, uint8_t *rx_tlv_hdr, 507 struct dp_peer *ta_peer, qdf_nbuf_t nbuf) 508 { 509 } 510 #endif 511 512 /* 513 * dp_rx_intrabss_fwd() - Implements the Intra-BSS forwarding logic 514 * 515 * @soc: core txrx main context 516 * @ta_peer : source peer entry 517 * @rx_tlv_hdr : start address of rx tlvs 518 * @nbuf : nbuf that has to be intrabss forwarded 519 * 520 * Return: bool: true if it is forwarded else false 521 */ 522 bool 523 dp_rx_intrabss_fwd(struct dp_soc *soc, 524 struct dp_peer *ta_peer, 525 uint8_t *rx_tlv_hdr, 526 qdf_nbuf_t nbuf, 527 struct hal_rx_msdu_metadata msdu_metadata) 528 { 529 uint16_t len; 530 uint8_t is_frag; 531 uint16_t da_peer_id = HTT_INVALID_PEER; 532 struct dp_peer *da_peer = NULL; 533 bool is_da_bss_peer = false; 534 struct dp_ast_entry *ast_entry; 535 qdf_nbuf_t nbuf_copy; 536 uint8_t tid = qdf_nbuf_get_tid_val(nbuf); 537 uint8_t ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf); 538 struct cdp_tid_rx_stats *tid_stats = &ta_peer->vdev->pdev->stats. 539 tid_stats.tid_rx_stats[ring_id][tid]; 540 541 /* check if the destination peer is available in peer table 542 * and also check if the source peer and destination peer 543 * belong to the same vap and destination peer is not bss peer. 544 */ 545 546 if ((qdf_nbuf_is_da_valid(nbuf) && !qdf_nbuf_is_da_mcbc(nbuf))) { 547 if (dp_rx_intrabss_eapol_drop_check(soc, ta_peer, rx_tlv_hdr, 548 nbuf)) 549 return true; 550 551 ast_entry = soc->ast_table[msdu_metadata.da_idx]; 552 if (!ast_entry) 553 return false; 554 555 if (ast_entry->type == CDP_TXRX_AST_TYPE_DA) { 556 ast_entry->is_active = TRUE; 557 return false; 558 } 559 560 da_peer_id = ast_entry->peer_id; 561 562 if (da_peer_id == HTT_INVALID_PEER) 563 return false; 564 /* TA peer cannot be same as peer(DA) on which AST is present 565 * this indicates a change in topology and that AST entries 566 * are yet to be updated. 567 */ 568 if (da_peer_id == ta_peer->peer_id) 569 return false; 570 571 if (ast_entry->vdev_id != ta_peer->vdev->vdev_id) 572 return false; 573 574 da_peer = dp_peer_get_ref_by_id(soc, da_peer_id, 575 DP_MOD_ID_RX); 576 if (!da_peer) 577 return false; 578 579 /* If the source or destination peer in the isolation 580 * list then dont forward instead push to bridge stack. 581 */ 582 if (dp_get_peer_isolation(ta_peer) || 583 dp_get_peer_isolation(da_peer)) { 584 dp_peer_unref_delete(da_peer, DP_MOD_ID_RX); 585 return false; 586 } 587 588 is_da_bss_peer = da_peer->bss_peer; 589 dp_peer_unref_delete(da_peer, DP_MOD_ID_RX); 590 591 if (!is_da_bss_peer) { 592 len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 593 is_frag = qdf_nbuf_is_frag(nbuf); 594 memset(nbuf->cb, 0x0, sizeof(nbuf->cb)); 595 596 /* linearize the nbuf just before we send to 597 * dp_tx_send() 598 */ 599 if (qdf_unlikely(is_frag)) { 600 if (qdf_nbuf_linearize(nbuf) == -ENOMEM) 601 return false; 602 603 nbuf = qdf_nbuf_unshare(nbuf); 604 if (!nbuf) { 605 DP_STATS_INC_PKT(ta_peer, 606 rx.intra_bss.fail, 607 1, 608 len); 609 /* return true even though the pkt is 610 * not forwarded. Basically skb_unshare 611 * failed and we want to continue with 612 * next nbuf. 613 */ 614 tid_stats->fail_cnt[INTRABSS_DROP]++; 615 return true; 616 } 617 } 618 619 if (!dp_tx_send((struct cdp_soc_t *)soc, 620 ta_peer->vdev->vdev_id, nbuf)) { 621 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.pkts, 1, 622 len); 623 return true; 624 } else { 625 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.fail, 1, 626 len); 627 tid_stats->fail_cnt[INTRABSS_DROP]++; 628 return false; 629 } 630 } 631 } 632 /* if it is a broadcast pkt (eg: ARP) and it is not its own 633 * source, then clone the pkt and send the cloned pkt for 634 * intra BSS forwarding and original pkt up the network stack 635 * Note: how do we handle multicast pkts. do we forward 636 * all multicast pkts as is or let a higher layer module 637 * like igmpsnoop decide whether to forward or not with 638 * Mcast enhancement. 639 */ 640 else if (qdf_unlikely((qdf_nbuf_is_da_mcbc(nbuf) && 641 !ta_peer->bss_peer))) { 642 if (dp_rx_intrabss_eapol_drop_check(soc, ta_peer, rx_tlv_hdr, 643 nbuf)) 644 return true; 645 646 if (!dp_rx_check_ndi_mdns_fwding(ta_peer, nbuf)) 647 goto end; 648 649 /* If the source peer in the isolation list 650 * then dont forward instead push to bridge stack 651 */ 652 if (dp_get_peer_isolation(ta_peer)) 653 goto end; 654 655 nbuf_copy = qdf_nbuf_copy(nbuf); 656 if (!nbuf_copy) 657 goto end; 658 659 len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 660 if (dp_tx_send((struct cdp_soc_t *)soc, 661 ta_peer->vdev->vdev_id, nbuf_copy)) { 662 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.fail, 1, len); 663 tid_stats->fail_cnt[INTRABSS_DROP]++; 664 qdf_nbuf_free(nbuf_copy); 665 } else { 666 DP_STATS_INC_PKT(ta_peer, rx.intra_bss.pkts, 1, len); 667 tid_stats->intrabss_cnt++; 668 } 669 } 670 671 end: 672 /* return false as we have to still send the original pkt 673 * up the stack 674 */ 675 return false; 676 } 677 678 #endif /* QCA_HOST_MODE_WIFI_DISABLED */ 679 680 #ifdef MESH_MODE_SUPPORT 681 682 /** 683 * dp_rx_fill_mesh_stats() - Fills the mesh per packet receive stats 684 * 685 * @vdev: DP Virtual device handle 686 * @nbuf: Buffer pointer 687 * @rx_tlv_hdr: start of rx tlv header 688 * @peer: pointer to peer 689 * 690 * This function allocated memory for mesh receive stats and fill the 691 * required stats. Stores the memory address in skb cb. 692 * 693 * Return: void 694 */ 695 696 void dp_rx_fill_mesh_stats(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 697 uint8_t *rx_tlv_hdr, struct dp_peer *peer) 698 { 699 struct mesh_recv_hdr_s *rx_info = NULL; 700 uint32_t pkt_type; 701 uint32_t nss; 702 uint32_t rate_mcs; 703 uint32_t bw; 704 uint8_t primary_chan_num; 705 uint32_t center_chan_freq; 706 struct dp_soc *soc = vdev->pdev->soc; 707 708 /* fill recv mesh stats */ 709 rx_info = qdf_mem_malloc(sizeof(struct mesh_recv_hdr_s)); 710 711 /* upper layers are resposible to free this memory */ 712 713 if (!rx_info) { 714 dp_rx_err("%pK: Memory allocation failed for mesh rx stats", 715 vdev->pdev->soc); 716 DP_STATS_INC(vdev->pdev, mesh_mem_alloc, 1); 717 return; 718 } 719 720 rx_info->rs_flags = MESH_RXHDR_VER1; 721 if (qdf_nbuf_is_rx_chfrag_start(nbuf)) 722 rx_info->rs_flags |= MESH_RX_FIRST_MSDU; 723 724 if (qdf_nbuf_is_rx_chfrag_end(nbuf)) 725 rx_info->rs_flags |= MESH_RX_LAST_MSDU; 726 727 if (hal_rx_tlv_get_is_decrypted(soc->hal_soc, rx_tlv_hdr)) { 728 rx_info->rs_flags |= MESH_RX_DECRYPTED; 729 rx_info->rs_keyix = hal_rx_msdu_get_keyid(soc->hal_soc, 730 rx_tlv_hdr); 731 if (vdev->osif_get_key) 732 vdev->osif_get_key(vdev->osif_vdev, 733 &rx_info->rs_decryptkey[0], 734 &peer->mac_addr.raw[0], 735 rx_info->rs_keyix); 736 } 737 738 rx_info->rs_snr = peer->stats.rx.snr; 739 rx_info->rs_rssi = rx_info->rs_snr + DP_DEFAULT_NOISEFLOOR; 740 741 soc = vdev->pdev->soc; 742 primary_chan_num = hal_rx_tlv_get_freq(soc->hal_soc, rx_tlv_hdr); 743 center_chan_freq = hal_rx_tlv_get_freq(soc->hal_soc, rx_tlv_hdr) >> 16; 744 745 if (soc->cdp_soc.ol_ops && soc->cdp_soc.ol_ops->freq_to_band) { 746 rx_info->rs_band = soc->cdp_soc.ol_ops->freq_to_band( 747 soc->ctrl_psoc, 748 vdev->pdev->pdev_id, 749 center_chan_freq); 750 } 751 rx_info->rs_channel = primary_chan_num; 752 pkt_type = hal_rx_tlv_get_pkt_type(soc->hal_soc, rx_tlv_hdr); 753 rate_mcs = hal_rx_tlv_rate_mcs_get(soc->hal_soc, rx_tlv_hdr); 754 bw = hal_rx_tlv_bw_get(soc->hal_soc, rx_tlv_hdr); 755 nss = hal_rx_msdu_start_nss_get(soc->hal_soc, rx_tlv_hdr); 756 rx_info->rs_ratephy1 = rate_mcs | (nss << 0x8) | (pkt_type << 16) | 757 (bw << 24); 758 759 qdf_nbuf_set_rx_fctx_type(nbuf, (void *)rx_info, CB_FTYPE_MESH_RX_INFO); 760 761 QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_INFO_MED, 762 FL("Mesh rx stats: flags %x, rssi %x, chn %x, rate %x, kix %x, snr %x"), 763 rx_info->rs_flags, 764 rx_info->rs_rssi, 765 rx_info->rs_channel, 766 rx_info->rs_ratephy1, 767 rx_info->rs_keyix, 768 rx_info->rs_snr); 769 770 } 771 772 /** 773 * dp_rx_filter_mesh_packets() - Filters mesh unwanted packets 774 * 775 * @vdev: DP Virtual device handle 776 * @nbuf: Buffer pointer 777 * @rx_tlv_hdr: start of rx tlv header 778 * 779 * This checks if the received packet is matching any filter out 780 * catogery and and drop the packet if it matches. 781 * 782 * Return: status(0 indicates drop, 1 indicate to no drop) 783 */ 784 785 QDF_STATUS dp_rx_filter_mesh_packets(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 786 uint8_t *rx_tlv_hdr) 787 { 788 union dp_align_mac_addr mac_addr; 789 struct dp_soc *soc = vdev->pdev->soc; 790 791 if (qdf_unlikely(vdev->mesh_rx_filter)) { 792 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_FROMDS) 793 if (hal_rx_mpdu_get_fr_ds(soc->hal_soc, 794 rx_tlv_hdr)) 795 return QDF_STATUS_SUCCESS; 796 797 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_TODS) 798 if (hal_rx_mpdu_get_to_ds(soc->hal_soc, 799 rx_tlv_hdr)) 800 return QDF_STATUS_SUCCESS; 801 802 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_NODS) 803 if (!hal_rx_mpdu_get_fr_ds(soc->hal_soc, 804 rx_tlv_hdr) && 805 !hal_rx_mpdu_get_to_ds(soc->hal_soc, 806 rx_tlv_hdr)) 807 return QDF_STATUS_SUCCESS; 808 809 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_RA) { 810 if (hal_rx_mpdu_get_addr1(soc->hal_soc, 811 rx_tlv_hdr, 812 &mac_addr.raw[0])) 813 return QDF_STATUS_E_FAILURE; 814 815 if (!qdf_mem_cmp(&mac_addr.raw[0], 816 &vdev->mac_addr.raw[0], 817 QDF_MAC_ADDR_SIZE)) 818 return QDF_STATUS_SUCCESS; 819 } 820 821 if (vdev->mesh_rx_filter & MESH_FILTER_OUT_TA) { 822 if (hal_rx_mpdu_get_addr2(soc->hal_soc, 823 rx_tlv_hdr, 824 &mac_addr.raw[0])) 825 return QDF_STATUS_E_FAILURE; 826 827 if (!qdf_mem_cmp(&mac_addr.raw[0], 828 &vdev->mac_addr.raw[0], 829 QDF_MAC_ADDR_SIZE)) 830 return QDF_STATUS_SUCCESS; 831 } 832 } 833 834 return QDF_STATUS_E_FAILURE; 835 } 836 837 #else 838 void dp_rx_fill_mesh_stats(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 839 uint8_t *rx_tlv_hdr, struct dp_peer *peer) 840 { 841 } 842 843 QDF_STATUS dp_rx_filter_mesh_packets(struct dp_vdev *vdev, qdf_nbuf_t nbuf, 844 uint8_t *rx_tlv_hdr) 845 { 846 return QDF_STATUS_E_FAILURE; 847 } 848 849 #endif 850 851 #ifdef FEATURE_NAC_RSSI 852 /** 853 * dp_rx_process_invalid_peer(): Function to pass invalid peer list to umac 854 * @soc: DP SOC handle 855 * @mpdu: mpdu for which peer is invalid 856 * @mac_id: mac_id which is one of 3 mac_ids(Assuming mac_id and 857 * pool_id has same mapping) 858 * 859 * return: integer type 860 */ 861 uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t mpdu, 862 uint8_t mac_id) 863 { 864 struct dp_invalid_peer_msg msg; 865 struct dp_vdev *vdev = NULL; 866 struct dp_pdev *pdev = NULL; 867 struct ieee80211_frame *wh; 868 qdf_nbuf_t curr_nbuf, next_nbuf; 869 uint8_t *rx_tlv_hdr = qdf_nbuf_data(mpdu); 870 uint8_t *rx_pkt_hdr = hal_rx_pkt_hdr_get(soc->hal_soc, rx_tlv_hdr); 871 872 if (!HAL_IS_DECAP_FORMAT_RAW(soc->hal_soc, rx_tlv_hdr)) { 873 dp_rx_debug("%pK: Drop decapped frames", soc); 874 goto free; 875 } 876 877 wh = (struct ieee80211_frame *)rx_pkt_hdr; 878 879 if (!DP_FRAME_IS_DATA(wh)) { 880 dp_rx_debug("%pK: NAWDS valid only for data frames", soc); 881 goto free; 882 } 883 884 if (qdf_nbuf_len(mpdu) < sizeof(struct ieee80211_frame)) { 885 dp_rx_err("%pK: Invalid nbuf length", soc); 886 goto free; 887 } 888 889 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 890 891 if (!pdev || qdf_unlikely(pdev->is_pdev_down)) { 892 dp_rx_err("%pK: PDEV %s", soc, !pdev ? "not found" : "down"); 893 goto free; 894 } 895 896 if (dp_monitor_filter_neighbour_peer(pdev, rx_pkt_hdr) == 897 QDF_STATUS_SUCCESS) 898 return 0; 899 900 TAILQ_FOREACH(vdev, &pdev->vdev_list, vdev_list_elem) { 901 if (qdf_mem_cmp(wh->i_addr1, vdev->mac_addr.raw, 902 QDF_MAC_ADDR_SIZE) == 0) { 903 goto out; 904 } 905 } 906 907 if (!vdev) { 908 dp_rx_err("%pK: VDEV not found", soc); 909 goto free; 910 } 911 912 out: 913 msg.wh = wh; 914 qdf_nbuf_pull_head(mpdu, soc->rx_pkt_tlv_size); 915 msg.nbuf = mpdu; 916 msg.vdev_id = vdev->vdev_id; 917 918 /* 919 * NOTE: Only valid for HKv1. 920 * If smart monitor mode is enabled on RE, we are getting invalid 921 * peer frames with RA as STA mac of RE and the TA not matching 922 * with any NAC list or the the BSSID.Such frames need to dropped 923 * in order to avoid HM_WDS false addition. 924 */ 925 if (pdev->soc->cdp_soc.ol_ops->rx_invalid_peer) { 926 if (dp_monitor_drop_inv_peer_pkts(vdev) == QDF_STATUS_SUCCESS) { 927 dp_rx_warn("%pK: Drop inv peer pkts with STA RA:%pm", 928 soc, wh->i_addr1); 929 goto free; 930 } 931 pdev->soc->cdp_soc.ol_ops->rx_invalid_peer( 932 (struct cdp_ctrl_objmgr_psoc *)soc->ctrl_psoc, 933 pdev->pdev_id, &msg); 934 } 935 936 free: 937 /* Drop and free packet */ 938 curr_nbuf = mpdu; 939 while (curr_nbuf) { 940 next_nbuf = qdf_nbuf_next(curr_nbuf); 941 qdf_nbuf_free(curr_nbuf); 942 curr_nbuf = next_nbuf; 943 } 944 945 return 0; 946 } 947 948 /** 949 * dp_rx_process_invalid_peer_wrapper(): Function to wrap invalid peer handler 950 * @soc: DP SOC handle 951 * @mpdu: mpdu for which peer is invalid 952 * @mpdu_done: if an mpdu is completed 953 * @mac_id: mac_id which is one of 3 mac_ids(Assuming mac_id and 954 * pool_id has same mapping) 955 * 956 * return: integer type 957 */ 958 void dp_rx_process_invalid_peer_wrapper(struct dp_soc *soc, 959 qdf_nbuf_t mpdu, bool mpdu_done, 960 uint8_t mac_id) 961 { 962 /* Only trigger the process when mpdu is completed */ 963 if (mpdu_done) 964 dp_rx_process_invalid_peer(soc, mpdu, mac_id); 965 } 966 #else 967 uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t mpdu, 968 uint8_t mac_id) 969 { 970 qdf_nbuf_t curr_nbuf, next_nbuf; 971 struct dp_pdev *pdev; 972 struct dp_vdev *vdev = NULL; 973 struct ieee80211_frame *wh; 974 uint8_t *rx_tlv_hdr = qdf_nbuf_data(mpdu); 975 uint8_t *rx_pkt_hdr = hal_rx_pkt_hdr_get(soc->hal_soc, rx_tlv_hdr); 976 977 wh = (struct ieee80211_frame *)rx_pkt_hdr; 978 979 if (!DP_FRAME_IS_DATA(wh)) { 980 QDF_TRACE_ERROR_RL(QDF_MODULE_ID_DP, 981 "only for data frames"); 982 goto free; 983 } 984 985 if (qdf_nbuf_len(mpdu) < sizeof(struct ieee80211_frame)) { 986 dp_rx_info_rl("%pK: Invalid nbuf length", soc); 987 goto free; 988 } 989 990 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 991 if (!pdev) { 992 dp_rx_info_rl("%pK: PDEV not found", soc); 993 goto free; 994 } 995 996 qdf_spin_lock_bh(&pdev->vdev_list_lock); 997 DP_PDEV_ITERATE_VDEV_LIST(pdev, vdev) { 998 if (qdf_mem_cmp(wh->i_addr1, vdev->mac_addr.raw, 999 QDF_MAC_ADDR_SIZE) == 0) { 1000 qdf_spin_unlock_bh(&pdev->vdev_list_lock); 1001 goto out; 1002 } 1003 } 1004 qdf_spin_unlock_bh(&pdev->vdev_list_lock); 1005 1006 if (!vdev) { 1007 dp_rx_info_rl("%pK: VDEV not found", soc); 1008 goto free; 1009 } 1010 1011 out: 1012 if (soc->cdp_soc.ol_ops->rx_invalid_peer) 1013 soc->cdp_soc.ol_ops->rx_invalid_peer(vdev->vdev_id, wh); 1014 free: 1015 /* reset the head and tail pointers */ 1016 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 1017 if (pdev) { 1018 pdev->invalid_peer_head_msdu = NULL; 1019 pdev->invalid_peer_tail_msdu = NULL; 1020 } 1021 1022 /* Drop and free packet */ 1023 curr_nbuf = mpdu; 1024 while (curr_nbuf) { 1025 next_nbuf = qdf_nbuf_next(curr_nbuf); 1026 qdf_nbuf_free(curr_nbuf); 1027 curr_nbuf = next_nbuf; 1028 } 1029 1030 /* Reset the head and tail pointers */ 1031 pdev = dp_get_pdev_for_lmac_id(soc, mac_id); 1032 if (pdev) { 1033 pdev->invalid_peer_head_msdu = NULL; 1034 pdev->invalid_peer_tail_msdu = NULL; 1035 } 1036 1037 return 0; 1038 } 1039 1040 void dp_rx_process_invalid_peer_wrapper(struct dp_soc *soc, 1041 qdf_nbuf_t mpdu, bool mpdu_done, 1042 uint8_t mac_id) 1043 { 1044 /* Process the nbuf */ 1045 dp_rx_process_invalid_peer(soc, mpdu, mac_id); 1046 } 1047 #endif 1048 1049 #ifndef QCA_HOST_MODE_WIFI_DISABLED 1050 1051 #ifdef RECEIVE_OFFLOAD 1052 /** 1053 * dp_rx_print_offload_info() - Print offload info from RX TLV 1054 * @soc: dp soc handle 1055 * @msdu: MSDU for which the offload info is to be printed 1056 * 1057 * Return: None 1058 */ 1059 static void dp_rx_print_offload_info(struct dp_soc *soc, 1060 qdf_nbuf_t msdu) 1061 { 1062 dp_verbose_debug("----------------------RX DESC LRO/GRO----------------------"); 1063 dp_verbose_debug("lro_eligible 0x%x", 1064 QDF_NBUF_CB_RX_LRO_ELIGIBLE(msdu)); 1065 dp_verbose_debug("pure_ack 0x%x", QDF_NBUF_CB_RX_TCP_PURE_ACK(msdu)); 1066 dp_verbose_debug("chksum 0x%x", QDF_NBUF_CB_RX_TCP_CHKSUM(msdu)); 1067 dp_verbose_debug("TCP seq num 0x%x", QDF_NBUF_CB_RX_TCP_SEQ_NUM(msdu)); 1068 dp_verbose_debug("TCP ack num 0x%x", QDF_NBUF_CB_RX_TCP_ACK_NUM(msdu)); 1069 dp_verbose_debug("TCP window 0x%x", QDF_NBUF_CB_RX_TCP_WIN(msdu)); 1070 dp_verbose_debug("TCP protocol 0x%x", QDF_NBUF_CB_RX_TCP_PROTO(msdu)); 1071 dp_verbose_debug("TCP offset 0x%x", QDF_NBUF_CB_RX_TCP_OFFSET(msdu)); 1072 dp_verbose_debug("toeplitz 0x%x", QDF_NBUF_CB_RX_FLOW_ID(msdu)); 1073 dp_verbose_debug("---------------------------------------------------------"); 1074 } 1075 1076 /** 1077 * dp_rx_fill_gro_info() - Fill GRO info from RX TLV into skb->cb 1078 * @soc: DP SOC handle 1079 * @rx_tlv: RX TLV received for the msdu 1080 * @msdu: msdu for which GRO info needs to be filled 1081 * @rx_ol_pkt_cnt: counter to be incremented for GRO eligible packets 1082 * 1083 * Return: None 1084 */ 1085 void dp_rx_fill_gro_info(struct dp_soc *soc, uint8_t *rx_tlv, 1086 qdf_nbuf_t msdu, uint32_t *rx_ol_pkt_cnt) 1087 { 1088 struct hal_offload_info offload_info; 1089 1090 if (!wlan_cfg_is_gro_enabled(soc->wlan_cfg_ctx)) 1091 return; 1092 1093 if (hal_rx_tlv_get_offload_info(soc->hal_soc, rx_tlv, &offload_info)) 1094 return; 1095 1096 *rx_ol_pkt_cnt = *rx_ol_pkt_cnt + 1; 1097 1098 QDF_NBUF_CB_RX_LRO_ELIGIBLE(msdu) = offload_info.lro_eligible; 1099 QDF_NBUF_CB_RX_TCP_PURE_ACK(msdu) = offload_info.tcp_pure_ack; 1100 QDF_NBUF_CB_RX_TCP_CHKSUM(msdu) = 1101 hal_rx_tlv_get_tcp_chksum(soc->hal_soc, 1102 rx_tlv); 1103 QDF_NBUF_CB_RX_TCP_SEQ_NUM(msdu) = offload_info.tcp_seq_num; 1104 QDF_NBUF_CB_RX_TCP_ACK_NUM(msdu) = offload_info.tcp_ack_num; 1105 QDF_NBUF_CB_RX_TCP_WIN(msdu) = offload_info.tcp_win; 1106 QDF_NBUF_CB_RX_TCP_PROTO(msdu) = offload_info.tcp_proto; 1107 QDF_NBUF_CB_RX_IPV6_PROTO(msdu) = offload_info.ipv6_proto; 1108 QDF_NBUF_CB_RX_TCP_OFFSET(msdu) = offload_info.tcp_offset; 1109 QDF_NBUF_CB_RX_FLOW_ID(msdu) = offload_info.flow_id; 1110 1111 dp_rx_print_offload_info(soc, msdu); 1112 } 1113 #endif /* RECEIVE_OFFLOAD */ 1114 1115 /** 1116 * dp_rx_adjust_nbuf_len() - set appropriate msdu length in nbuf. 1117 * 1118 * @soc: DP soc handle 1119 * @nbuf: pointer to msdu. 1120 * @mpdu_len: mpdu length 1121 * @l3_pad_len: L3 padding length by HW 1122 * 1123 * Return: returns true if nbuf is last msdu of mpdu else retuns false. 1124 */ 1125 static inline bool dp_rx_adjust_nbuf_len(struct dp_soc *soc, 1126 qdf_nbuf_t nbuf, 1127 uint16_t *mpdu_len, 1128 uint32_t l3_pad_len) 1129 { 1130 bool last_nbuf; 1131 uint32_t pkt_hdr_size; 1132 1133 pkt_hdr_size = soc->rx_pkt_tlv_size + l3_pad_len; 1134 1135 if ((*mpdu_len + pkt_hdr_size) > RX_DATA_BUFFER_SIZE) { 1136 qdf_nbuf_set_pktlen(nbuf, RX_DATA_BUFFER_SIZE); 1137 last_nbuf = false; 1138 *mpdu_len -= (RX_DATA_BUFFER_SIZE - pkt_hdr_size); 1139 } else { 1140 qdf_nbuf_set_pktlen(nbuf, (*mpdu_len + pkt_hdr_size)); 1141 last_nbuf = true; 1142 *mpdu_len = 0; 1143 } 1144 1145 return last_nbuf; 1146 } 1147 1148 /** 1149 * dp_get_l3_hdr_pad_len() - get L3 header padding length. 1150 * 1151 * @soc: DP soc handle 1152 * @nbuf: pointer to msdu. 1153 * 1154 * Return: returns padding length in bytes. 1155 */ 1156 static inline uint32_t dp_get_l3_hdr_pad_len(struct dp_soc *soc, 1157 qdf_nbuf_t nbuf) 1158 { 1159 uint32_t l3_hdr_pad = 0; 1160 uint8_t *rx_tlv_hdr; 1161 struct hal_rx_msdu_metadata msdu_metadata; 1162 1163 while (nbuf) { 1164 if (!qdf_nbuf_is_rx_chfrag_cont(nbuf)) { 1165 /* scattered msdu end with continuation is 0 */ 1166 rx_tlv_hdr = qdf_nbuf_data(nbuf); 1167 hal_rx_msdu_metadata_get(soc->hal_soc, 1168 rx_tlv_hdr, 1169 &msdu_metadata); 1170 l3_hdr_pad = msdu_metadata.l3_hdr_pad; 1171 break; 1172 } 1173 nbuf = nbuf->next; 1174 } 1175 1176 return l3_hdr_pad; 1177 } 1178 1179 /** 1180 * dp_rx_sg_create() - create a frag_list for MSDUs which are spread across 1181 * multiple nbufs. 1182 * @soc: DP SOC handle 1183 * @nbuf: pointer to the first msdu of an amsdu. 1184 * 1185 * This function implements the creation of RX frag_list for cases 1186 * where an MSDU is spread across multiple nbufs. 1187 * 1188 * Return: returns the head nbuf which contains complete frag_list. 1189 */ 1190 qdf_nbuf_t dp_rx_sg_create(struct dp_soc *soc, qdf_nbuf_t nbuf) 1191 { 1192 qdf_nbuf_t parent, frag_list, next = NULL; 1193 uint16_t frag_list_len = 0; 1194 uint16_t mpdu_len; 1195 bool last_nbuf; 1196 uint32_t l3_hdr_pad_offset = 0; 1197 1198 /* 1199 * Use msdu len got from REO entry descriptor instead since 1200 * there is case the RX PKT TLV is corrupted while msdu_len 1201 * from REO descriptor is right for non-raw RX scatter msdu. 1202 */ 1203 mpdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1204 1205 /* 1206 * this is a case where the complete msdu fits in one single nbuf. 1207 * in this case HW sets both start and end bit and we only need to 1208 * reset these bits for RAW mode simulator to decap the pkt 1209 */ 1210 if (qdf_nbuf_is_rx_chfrag_start(nbuf) && 1211 qdf_nbuf_is_rx_chfrag_end(nbuf)) { 1212 qdf_nbuf_set_pktlen(nbuf, mpdu_len + soc->rx_pkt_tlv_size); 1213 qdf_nbuf_pull_head(nbuf, soc->rx_pkt_tlv_size); 1214 return nbuf; 1215 } 1216 1217 l3_hdr_pad_offset = dp_get_l3_hdr_pad_len(soc, nbuf); 1218 /* 1219 * This is a case where we have multiple msdus (A-MSDU) spread across 1220 * multiple nbufs. here we create a fraglist out of these nbufs. 1221 * 1222 * the moment we encounter a nbuf with continuation bit set we 1223 * know for sure we have an MSDU which is spread across multiple 1224 * nbufs. We loop through and reap nbufs till we reach last nbuf. 1225 */ 1226 parent = nbuf; 1227 frag_list = nbuf->next; 1228 nbuf = nbuf->next; 1229 1230 /* 1231 * set the start bit in the first nbuf we encounter with continuation 1232 * bit set. This has the proper mpdu length set as it is the first 1233 * msdu of the mpdu. this becomes the parent nbuf and the subsequent 1234 * nbufs will form the frag_list of the parent nbuf. 1235 */ 1236 qdf_nbuf_set_rx_chfrag_start(parent, 1); 1237 /* 1238 * L3 header padding is only needed for the 1st buffer 1239 * in a scattered msdu 1240 */ 1241 last_nbuf = dp_rx_adjust_nbuf_len(soc, parent, &mpdu_len, 1242 l3_hdr_pad_offset); 1243 1244 /* 1245 * MSDU cont bit is set but reported MPDU length can fit 1246 * in to single buffer 1247 * 1248 * Increment error stats and avoid SG list creation 1249 */ 1250 if (last_nbuf) { 1251 DP_STATS_INC(soc, rx.err.msdu_continuation_err, 1); 1252 qdf_nbuf_pull_head(parent, 1253 soc->rx_pkt_tlv_size + l3_hdr_pad_offset); 1254 return parent; 1255 } 1256 1257 /* 1258 * this is where we set the length of the fragments which are 1259 * associated to the parent nbuf. We iterate through the frag_list 1260 * till we hit the last_nbuf of the list. 1261 */ 1262 do { 1263 last_nbuf = dp_rx_adjust_nbuf_len(soc, nbuf, &mpdu_len, 0); 1264 qdf_nbuf_pull_head(nbuf, 1265 soc->rx_pkt_tlv_size); 1266 frag_list_len += qdf_nbuf_len(nbuf); 1267 1268 if (last_nbuf) { 1269 next = nbuf->next; 1270 nbuf->next = NULL; 1271 break; 1272 } 1273 1274 nbuf = nbuf->next; 1275 } while (!last_nbuf); 1276 1277 qdf_nbuf_set_rx_chfrag_start(nbuf, 0); 1278 qdf_nbuf_append_ext_list(parent, frag_list, frag_list_len); 1279 parent->next = next; 1280 1281 qdf_nbuf_pull_head(parent, 1282 soc->rx_pkt_tlv_size + l3_hdr_pad_offset); 1283 return parent; 1284 } 1285 1286 #endif /* QCA_HOST_MODE_WIFI_DISABLED */ 1287 1288 #ifdef QCA_PEER_EXT_STATS 1289 /* 1290 * dp_rx_compute_tid_delay - Computer per TID delay stats 1291 * @peer: DP soc context 1292 * @nbuf: NBuffer 1293 * 1294 * Return: Void 1295 */ 1296 void dp_rx_compute_tid_delay(struct cdp_delay_tid_stats *stats, 1297 qdf_nbuf_t nbuf) 1298 { 1299 struct cdp_delay_rx_stats *rx_delay = &stats->rx_delay; 1300 uint32_t to_stack = qdf_nbuf_get_timedelta_ms(nbuf); 1301 1302 dp_hist_update_stats(&rx_delay->to_stack_delay, to_stack); 1303 } 1304 #endif /* QCA_PEER_EXT_STATS */ 1305 1306 /** 1307 * dp_rx_compute_delay() - Compute and fill in all timestamps 1308 * to pass in correct fields 1309 * 1310 * @vdev: pdev handle 1311 * @tx_desc: tx descriptor 1312 * @tid: tid value 1313 * Return: none 1314 */ 1315 void dp_rx_compute_delay(struct dp_vdev *vdev, qdf_nbuf_t nbuf) 1316 { 1317 uint8_t ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf); 1318 int64_t current_ts = qdf_ktime_to_ms(qdf_ktime_get()); 1319 uint32_t to_stack = qdf_nbuf_get_timedelta_ms(nbuf); 1320 uint8_t tid = qdf_nbuf_get_tid_val(nbuf); 1321 uint32_t interframe_delay = 1322 (uint32_t)(current_ts - vdev->prev_rx_deliver_tstamp); 1323 1324 dp_update_delay_stats(vdev->pdev, to_stack, tid, 1325 CDP_DELAY_STATS_REAP_STACK, ring_id); 1326 /* 1327 * Update interframe delay stats calculated at deliver_data_ol point. 1328 * Value of vdev->prev_rx_deliver_tstamp will be 0 for 1st frame, so 1329 * interframe delay will not be calculate correctly for 1st frame. 1330 * On the other side, this will help in avoiding extra per packet check 1331 * of vdev->prev_rx_deliver_tstamp. 1332 */ 1333 dp_update_delay_stats(vdev->pdev, interframe_delay, tid, 1334 CDP_DELAY_STATS_RX_INTERFRAME, ring_id); 1335 vdev->prev_rx_deliver_tstamp = current_ts; 1336 } 1337 1338 /** 1339 * dp_rx_drop_nbuf_list() - drop an nbuf list 1340 * @pdev: dp pdev reference 1341 * @buf_list: buffer list to be dropepd 1342 * 1343 * Return: int (number of bufs dropped) 1344 */ 1345 static inline int dp_rx_drop_nbuf_list(struct dp_pdev *pdev, 1346 qdf_nbuf_t buf_list) 1347 { 1348 struct cdp_tid_rx_stats *stats = NULL; 1349 uint8_t tid = 0, ring_id = 0; 1350 int num_dropped = 0; 1351 qdf_nbuf_t buf, next_buf; 1352 1353 buf = buf_list; 1354 while (buf) { 1355 ring_id = QDF_NBUF_CB_RX_CTX_ID(buf); 1356 next_buf = qdf_nbuf_queue_next(buf); 1357 tid = qdf_nbuf_get_tid_val(buf); 1358 if (qdf_likely(pdev)) { 1359 stats = &pdev->stats.tid_stats.tid_rx_stats[ring_id][tid]; 1360 stats->fail_cnt[INVALID_PEER_VDEV]++; 1361 stats->delivered_to_stack--; 1362 } 1363 qdf_nbuf_free(buf); 1364 buf = next_buf; 1365 num_dropped++; 1366 } 1367 1368 return num_dropped; 1369 } 1370 1371 #ifdef QCA_SUPPORT_WDS_EXTENDED 1372 /** 1373 * dp_rx_deliver_to_stack_ext() - Deliver to netdev per sta 1374 * @soc: core txrx main context 1375 * @vdev: vdev 1376 * @peer: peer 1377 * @nbuf_head: skb list head 1378 * 1379 * Return: true if packet is delivered to netdev per STA. 1380 */ 1381 static inline bool 1382 dp_rx_deliver_to_stack_ext(struct dp_soc *soc, struct dp_vdev *vdev, 1383 struct dp_peer *peer, qdf_nbuf_t nbuf_head) 1384 { 1385 /* 1386 * When extended WDS is disabled, frames are sent to AP netdevice. 1387 */ 1388 if (qdf_likely(!vdev->wds_ext_enabled)) 1389 return false; 1390 1391 /* 1392 * There can be 2 cases: 1393 * 1. Send frame to parent netdev if its not for netdev per STA 1394 * 2. If frame is meant for netdev per STA: 1395 * a. Send frame to appropriate netdev using registered fp. 1396 * b. If fp is NULL, drop the frames. 1397 */ 1398 if (!peer->wds_ext.init) 1399 return false; 1400 1401 if (peer->osif_rx) 1402 peer->osif_rx(peer->wds_ext.osif_peer, nbuf_head); 1403 else 1404 dp_rx_drop_nbuf_list(vdev->pdev, nbuf_head); 1405 1406 return true; 1407 } 1408 1409 #else 1410 static inline bool 1411 dp_rx_deliver_to_stack_ext(struct dp_soc *soc, struct dp_vdev *vdev, 1412 struct dp_peer *peer, qdf_nbuf_t nbuf_head) 1413 { 1414 return false; 1415 } 1416 #endif 1417 1418 #ifdef PEER_CACHE_RX_PKTS 1419 /** 1420 * dp_rx_flush_rx_cached() - flush cached rx frames 1421 * @peer: peer 1422 * @drop: flag to drop frames or forward to net stack 1423 * 1424 * Return: None 1425 */ 1426 void dp_rx_flush_rx_cached(struct dp_peer *peer, bool drop) 1427 { 1428 struct dp_peer_cached_bufq *bufqi; 1429 struct dp_rx_cached_buf *cache_buf = NULL; 1430 ol_txrx_rx_fp data_rx = NULL; 1431 int num_buff_elem; 1432 QDF_STATUS status; 1433 1434 if (qdf_atomic_inc_return(&peer->flush_in_progress) > 1) { 1435 qdf_atomic_dec(&peer->flush_in_progress); 1436 return; 1437 } 1438 1439 qdf_spin_lock_bh(&peer->peer_info_lock); 1440 if (peer->state >= OL_TXRX_PEER_STATE_CONN && peer->vdev->osif_rx) 1441 data_rx = peer->vdev->osif_rx; 1442 else 1443 drop = true; 1444 qdf_spin_unlock_bh(&peer->peer_info_lock); 1445 1446 bufqi = &peer->bufq_info; 1447 1448 qdf_spin_lock_bh(&bufqi->bufq_lock); 1449 qdf_list_remove_front(&bufqi->cached_bufq, 1450 (qdf_list_node_t **)&cache_buf); 1451 while (cache_buf) { 1452 num_buff_elem = QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST( 1453 cache_buf->buf); 1454 bufqi->entries -= num_buff_elem; 1455 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1456 if (drop) { 1457 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1458 cache_buf->buf); 1459 } else { 1460 /* Flush the cached frames to OSIF DEV */ 1461 status = data_rx(peer->vdev->osif_vdev, cache_buf->buf); 1462 if (status != QDF_STATUS_SUCCESS) 1463 bufqi->dropped = dp_rx_drop_nbuf_list( 1464 peer->vdev->pdev, 1465 cache_buf->buf); 1466 } 1467 qdf_mem_free(cache_buf); 1468 cache_buf = NULL; 1469 qdf_spin_lock_bh(&bufqi->bufq_lock); 1470 qdf_list_remove_front(&bufqi->cached_bufq, 1471 (qdf_list_node_t **)&cache_buf); 1472 } 1473 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1474 qdf_atomic_dec(&peer->flush_in_progress); 1475 } 1476 1477 /** 1478 * dp_rx_enqueue_rx() - cache rx frames 1479 * @peer: peer 1480 * @rx_buf_list: cache buffer list 1481 * 1482 * Return: None 1483 */ 1484 static QDF_STATUS 1485 dp_rx_enqueue_rx(struct dp_peer *peer, qdf_nbuf_t rx_buf_list) 1486 { 1487 struct dp_rx_cached_buf *cache_buf; 1488 struct dp_peer_cached_bufq *bufqi = &peer->bufq_info; 1489 int num_buff_elem; 1490 1491 dp_debug_rl("bufq->curr %d bufq->drops %d", bufqi->entries, 1492 bufqi->dropped); 1493 if (!peer->valid) { 1494 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1495 rx_buf_list); 1496 return QDF_STATUS_E_INVAL; 1497 } 1498 1499 qdf_spin_lock_bh(&bufqi->bufq_lock); 1500 if (bufqi->entries >= bufqi->thresh) { 1501 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1502 rx_buf_list); 1503 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1504 return QDF_STATUS_E_RESOURCES; 1505 } 1506 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1507 1508 num_buff_elem = QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(rx_buf_list); 1509 1510 cache_buf = qdf_mem_malloc_atomic(sizeof(*cache_buf)); 1511 if (!cache_buf) { 1512 QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, 1513 "Failed to allocate buf to cache rx frames"); 1514 bufqi->dropped = dp_rx_drop_nbuf_list(peer->vdev->pdev, 1515 rx_buf_list); 1516 return QDF_STATUS_E_NOMEM; 1517 } 1518 1519 cache_buf->buf = rx_buf_list; 1520 1521 qdf_spin_lock_bh(&bufqi->bufq_lock); 1522 qdf_list_insert_back(&bufqi->cached_bufq, 1523 &cache_buf->node); 1524 bufqi->entries += num_buff_elem; 1525 qdf_spin_unlock_bh(&bufqi->bufq_lock); 1526 1527 return QDF_STATUS_SUCCESS; 1528 } 1529 1530 static inline 1531 bool dp_rx_is_peer_cache_bufq_supported(void) 1532 { 1533 return true; 1534 } 1535 #else 1536 static inline 1537 bool dp_rx_is_peer_cache_bufq_supported(void) 1538 { 1539 return false; 1540 } 1541 1542 static inline QDF_STATUS 1543 dp_rx_enqueue_rx(struct dp_peer *peer, qdf_nbuf_t rx_buf_list) 1544 { 1545 return QDF_STATUS_SUCCESS; 1546 } 1547 #endif 1548 1549 #ifndef DELIVERY_TO_STACK_STATUS_CHECK 1550 /** 1551 * dp_rx_check_delivery_to_stack() - Deliver pkts to network 1552 * using the appropriate call back functions. 1553 * @soc: soc 1554 * @vdev: vdev 1555 * @peer: peer 1556 * @nbuf_head: skb list head 1557 * @nbuf_tail: skb list tail 1558 * 1559 * Return: None 1560 */ 1561 static void dp_rx_check_delivery_to_stack(struct dp_soc *soc, 1562 struct dp_vdev *vdev, 1563 struct dp_peer *peer, 1564 qdf_nbuf_t nbuf_head) 1565 { 1566 if (qdf_unlikely(dp_rx_deliver_to_stack_ext(soc, vdev, 1567 peer, nbuf_head))) 1568 return; 1569 1570 /* Function pointer initialized only when FISA is enabled */ 1571 if (vdev->osif_fisa_rx) 1572 /* on failure send it via regular path */ 1573 vdev->osif_fisa_rx(soc, vdev, nbuf_head); 1574 else 1575 vdev->osif_rx(vdev->osif_vdev, nbuf_head); 1576 } 1577 1578 #else 1579 /** 1580 * dp_rx_check_delivery_to_stack() - Deliver pkts to network 1581 * using the appropriate call back functions. 1582 * @soc: soc 1583 * @vdev: vdev 1584 * @peer: peer 1585 * @nbuf_head: skb list head 1586 * @nbuf_tail: skb list tail 1587 * 1588 * Check the return status of the call back function and drop 1589 * the packets if the return status indicates a failure. 1590 * 1591 * Return: None 1592 */ 1593 static void dp_rx_check_delivery_to_stack(struct dp_soc *soc, 1594 struct dp_vdev *vdev, 1595 struct dp_peer *peer, 1596 qdf_nbuf_t nbuf_head) 1597 { 1598 int num_nbuf = 0; 1599 QDF_STATUS ret_val = QDF_STATUS_E_FAILURE; 1600 1601 /* Function pointer initialized only when FISA is enabled */ 1602 if (vdev->osif_fisa_rx) 1603 /* on failure send it via regular path */ 1604 ret_val = vdev->osif_fisa_rx(soc, vdev, nbuf_head); 1605 else if (vdev->osif_rx) 1606 ret_val = vdev->osif_rx(vdev->osif_vdev, nbuf_head); 1607 1608 if (!QDF_IS_STATUS_SUCCESS(ret_val)) { 1609 num_nbuf = dp_rx_drop_nbuf_list(vdev->pdev, nbuf_head); 1610 DP_STATS_INC(soc, rx.err.rejected, num_nbuf); 1611 if (peer) 1612 DP_STATS_DEC(peer, rx.to_stack.num, num_nbuf); 1613 } 1614 } 1615 #endif /* ifdef DELIVERY_TO_STACK_STATUS_CHECK */ 1616 1617 /* 1618 * dp_rx_validate_rx_callbacks() - validate rx callbacks 1619 * @soc DP soc 1620 * @vdev: DP vdev handle 1621 * @peer: pointer to the peer object 1622 * nbuf_head: skb list head 1623 * 1624 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 1625 * QDF_STATUS_E_FAILURE 1626 */ 1627 static inline QDF_STATUS 1628 dp_rx_validate_rx_callbacks(struct dp_soc *soc, 1629 struct dp_vdev *vdev, 1630 struct dp_peer *peer, 1631 qdf_nbuf_t nbuf_head) 1632 { 1633 int num_nbuf; 1634 1635 if (qdf_unlikely(!vdev || vdev->delete.pending)) { 1636 num_nbuf = dp_rx_drop_nbuf_list(NULL, nbuf_head); 1637 /* 1638 * This is a special case where vdev is invalid, 1639 * so we cannot know the pdev to which this packet 1640 * belonged. Hence we update the soc rx error stats. 1641 */ 1642 DP_STATS_INC(soc, rx.err.invalid_vdev, num_nbuf); 1643 return QDF_STATUS_E_FAILURE; 1644 } 1645 1646 /* 1647 * highly unlikely to have a vdev without a registered rx 1648 * callback function. if so let us free the nbuf_list. 1649 */ 1650 if (qdf_unlikely(!vdev->osif_rx)) { 1651 if (peer && dp_rx_is_peer_cache_bufq_supported()) { 1652 dp_rx_enqueue_rx(peer, nbuf_head); 1653 } else { 1654 num_nbuf = dp_rx_drop_nbuf_list(vdev->pdev, 1655 nbuf_head); 1656 DP_STATS_DEC(peer, rx.to_stack.num, num_nbuf); 1657 } 1658 return QDF_STATUS_E_FAILURE; 1659 } 1660 1661 return QDF_STATUS_SUCCESS; 1662 } 1663 1664 QDF_STATUS dp_rx_deliver_to_stack(struct dp_soc *soc, 1665 struct dp_vdev *vdev, 1666 struct dp_peer *peer, 1667 qdf_nbuf_t nbuf_head, 1668 qdf_nbuf_t nbuf_tail) 1669 { 1670 if (dp_rx_validate_rx_callbacks(soc, vdev, peer, nbuf_head) != 1671 QDF_STATUS_SUCCESS) 1672 return QDF_STATUS_E_FAILURE; 1673 1674 if (qdf_unlikely(vdev->rx_decap_type == htt_cmn_pkt_type_raw) || 1675 (vdev->rx_decap_type == htt_cmn_pkt_type_native_wifi)) { 1676 vdev->osif_rsim_rx_decap(vdev->osif_vdev, &nbuf_head, 1677 &nbuf_tail, peer->mac_addr.raw); 1678 } 1679 1680 dp_rx_check_delivery_to_stack(soc, vdev, peer, nbuf_head); 1681 1682 return QDF_STATUS_SUCCESS; 1683 } 1684 1685 #ifdef QCA_SUPPORT_EAPOL_OVER_CONTROL_PORT 1686 QDF_STATUS dp_rx_eapol_deliver_to_stack(struct dp_soc *soc, 1687 struct dp_vdev *vdev, 1688 struct dp_peer *peer, 1689 qdf_nbuf_t nbuf_head, 1690 qdf_nbuf_t nbuf_tail) 1691 { 1692 if (dp_rx_validate_rx_callbacks(soc, vdev, peer, nbuf_head) != 1693 QDF_STATUS_SUCCESS) 1694 return QDF_STATUS_E_FAILURE; 1695 1696 vdev->osif_rx_eapol(vdev->osif_vdev, nbuf_head); 1697 1698 return QDF_STATUS_SUCCESS; 1699 } 1700 #endif 1701 1702 #ifndef QCA_HOST_MODE_WIFI_DISABLED 1703 #ifdef VDEV_PEER_PROTOCOL_COUNT 1704 #define dp_rx_msdu_stats_update_prot_cnts(vdev_hdl, nbuf, peer) \ 1705 { \ 1706 qdf_nbuf_t nbuf_local; \ 1707 struct dp_peer *peer_local; \ 1708 struct dp_vdev *vdev_local = vdev_hdl; \ 1709 do { \ 1710 if (qdf_likely(!((vdev_local)->peer_protocol_count_track))) \ 1711 break; \ 1712 nbuf_local = nbuf; \ 1713 peer_local = peer; \ 1714 if (qdf_unlikely(qdf_nbuf_is_frag((nbuf_local)))) \ 1715 break; \ 1716 else if (qdf_unlikely(qdf_nbuf_is_raw_frame((nbuf_local)))) \ 1717 break; \ 1718 dp_vdev_peer_stats_update_protocol_cnt((vdev_local), \ 1719 (nbuf_local), \ 1720 (peer_local), 0, 1); \ 1721 } while (0); \ 1722 } 1723 #else 1724 #define dp_rx_msdu_stats_update_prot_cnts(vdev_hdl, nbuf, peer) 1725 #endif 1726 1727 /** 1728 * dp_rx_msdu_stats_update() - update per msdu stats. 1729 * @soc: core txrx main context 1730 * @nbuf: pointer to the first msdu of an amsdu. 1731 * @rx_tlv_hdr: pointer to the start of RX TLV headers. 1732 * @peer: pointer to the peer object. 1733 * @ring_id: reo dest ring number on which pkt is reaped. 1734 * @tid_stats: per tid rx stats. 1735 * 1736 * update all the per msdu stats for that nbuf. 1737 * Return: void 1738 */ 1739 void dp_rx_msdu_stats_update(struct dp_soc *soc, qdf_nbuf_t nbuf, 1740 uint8_t *rx_tlv_hdr, struct dp_peer *peer, 1741 uint8_t ring_id, 1742 struct cdp_tid_rx_stats *tid_stats) 1743 { 1744 bool is_ampdu, is_not_amsdu; 1745 uint32_t sgi, mcs, tid, nss, bw, reception_type, pkt_type; 1746 struct dp_vdev *vdev = peer->vdev; 1747 qdf_ether_header_t *eh; 1748 uint16_t msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1749 1750 dp_rx_msdu_stats_update_prot_cnts(vdev, nbuf, peer); 1751 is_not_amsdu = qdf_nbuf_is_rx_chfrag_start(nbuf) & 1752 qdf_nbuf_is_rx_chfrag_end(nbuf); 1753 1754 DP_STATS_INC_PKT(peer, rx.rcvd_reo[ring_id], 1, msdu_len); 1755 DP_STATS_INCC(peer, rx.non_amsdu_cnt, 1, is_not_amsdu); 1756 DP_STATS_INCC(peer, rx.amsdu_cnt, 1, !is_not_amsdu); 1757 DP_STATS_INCC(peer, rx.rx_retries, 1, qdf_nbuf_is_rx_retry_flag(nbuf)); 1758 1759 tid_stats->msdu_cnt++; 1760 if (qdf_unlikely(qdf_nbuf_is_da_mcbc(nbuf) && 1761 (vdev->rx_decap_type == htt_cmn_pkt_type_ethernet))) { 1762 eh = (qdf_ether_header_t *)qdf_nbuf_data(nbuf); 1763 DP_STATS_INC_PKT(peer, rx.multicast, 1, msdu_len); 1764 tid_stats->mcast_msdu_cnt++; 1765 if (QDF_IS_ADDR_BROADCAST(eh->ether_dhost)) { 1766 DP_STATS_INC_PKT(peer, rx.bcast, 1, msdu_len); 1767 tid_stats->bcast_msdu_cnt++; 1768 } 1769 } 1770 1771 /* 1772 * currently we can return from here as we have similar stats 1773 * updated at per ppdu level instead of msdu level 1774 */ 1775 if (!soc->process_rx_status) 1776 return; 1777 1778 /* 1779 * TODO - For WCN7850 this field is present in ring_desc 1780 * Try to use ring desc instead of tlv. 1781 */ 1782 is_ampdu = hal_rx_mpdu_info_ampdu_flag_get(soc->hal_soc, rx_tlv_hdr); 1783 DP_STATS_INCC(peer, rx.ampdu_cnt, 1, is_ampdu); 1784 DP_STATS_INCC(peer, rx.non_ampdu_cnt, 1, !(is_ampdu)); 1785 1786 sgi = hal_rx_tlv_sgi_get(soc->hal_soc, rx_tlv_hdr); 1787 mcs = hal_rx_tlv_rate_mcs_get(soc->hal_soc, rx_tlv_hdr); 1788 tid = qdf_nbuf_get_tid_val(nbuf); 1789 bw = hal_rx_tlv_bw_get(soc->hal_soc, rx_tlv_hdr); 1790 reception_type = hal_rx_msdu_start_reception_type_get(soc->hal_soc, 1791 rx_tlv_hdr); 1792 nss = hal_rx_msdu_start_nss_get(soc->hal_soc, rx_tlv_hdr); 1793 pkt_type = hal_rx_tlv_get_pkt_type(soc->hal_soc, rx_tlv_hdr); 1794 1795 DP_STATS_INCC(peer, rx.rx_mpdu_cnt[mcs], 1, 1796 ((mcs < MAX_MCS) && QDF_NBUF_CB_RX_CHFRAG_START(nbuf))); 1797 DP_STATS_INCC(peer, rx.rx_mpdu_cnt[MAX_MCS - 1], 1, 1798 ((mcs >= MAX_MCS) && QDF_NBUF_CB_RX_CHFRAG_START(nbuf))); 1799 DP_STATS_INC(peer, rx.bw[bw], 1); 1800 /* 1801 * only if nss > 0 and pkt_type is 11N/AC/AX, 1802 * then increase index [nss - 1] in array counter. 1803 */ 1804 if (nss > 0 && (pkt_type == DOT11_N || 1805 pkt_type == DOT11_AC || 1806 pkt_type == DOT11_AX)) 1807 DP_STATS_INC(peer, rx.nss[nss - 1], 1); 1808 1809 DP_STATS_INC(peer, rx.sgi_count[sgi], 1); 1810 DP_STATS_INCC(peer, rx.err.mic_err, 1, 1811 hal_rx_tlv_mic_err_get(soc->hal_soc, rx_tlv_hdr)); 1812 DP_STATS_INCC(peer, rx.err.decrypt_err, 1, 1813 hal_rx_tlv_decrypt_err_get(soc->hal_soc, rx_tlv_hdr)); 1814 1815 DP_STATS_INC(peer, rx.wme_ac_type[TID_TO_WME_AC(tid)], 1); 1816 DP_STATS_INC(peer, rx.reception_type[reception_type], 1); 1817 1818 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1819 ((mcs >= MAX_MCS_11A) && (pkt_type == DOT11_A))); 1820 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1821 ((mcs <= MAX_MCS_11A) && (pkt_type == DOT11_A))); 1822 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1823 ((mcs >= MAX_MCS_11B) && (pkt_type == DOT11_B))); 1824 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1825 ((mcs <= MAX_MCS_11B) && (pkt_type == DOT11_B))); 1826 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1827 ((mcs >= MAX_MCS_11A) && (pkt_type == DOT11_N))); 1828 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1829 ((mcs <= MAX_MCS_11A) && (pkt_type == DOT11_N))); 1830 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1831 ((mcs >= MAX_MCS_11AC) && (pkt_type == DOT11_AC))); 1832 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1833 ((mcs <= MAX_MCS_11AC) && (pkt_type == DOT11_AC))); 1834 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[MAX_MCS - 1], 1, 1835 ((mcs >= MAX_MCS) && (pkt_type == DOT11_AX))); 1836 DP_STATS_INCC(peer, rx.pkt_type[pkt_type].mcs_count[mcs], 1, 1837 ((mcs < MAX_MCS) && (pkt_type == DOT11_AX))); 1838 } 1839 1840 #ifndef WDS_VENDOR_EXTENSION 1841 int dp_wds_rx_policy_check(uint8_t *rx_tlv_hdr, 1842 struct dp_vdev *vdev, 1843 struct dp_peer *peer) 1844 { 1845 return 1; 1846 } 1847 #endif 1848 1849 #ifdef RX_DESC_DEBUG_CHECK 1850 /** 1851 * dp_rx_desc_nbuf_sanity_check - Add sanity check to catch REO rx_desc paddr 1852 * corruption 1853 * 1854 * @ring_desc: REO ring descriptor 1855 * @rx_desc: Rx descriptor 1856 * 1857 * Return: NONE 1858 */ 1859 QDF_STATUS dp_rx_desc_nbuf_sanity_check(struct dp_soc *soc, 1860 hal_ring_desc_t ring_desc, 1861 struct dp_rx_desc *rx_desc) 1862 { 1863 struct hal_buf_info hbi; 1864 1865 hal_rx_reo_buf_paddr_get(soc->hal_soc, ring_desc, &hbi); 1866 /* Sanity check for possible buffer paddr corruption */ 1867 if (dp_rx_desc_paddr_sanity_check(rx_desc, (&hbi)->paddr)) 1868 return QDF_STATUS_SUCCESS; 1869 1870 return QDF_STATUS_E_FAILURE; 1871 } 1872 1873 /** 1874 * dp_rx_desc_nbuf_len_sanity_check - Add sanity check to catch Rx buffer 1875 * out of bound access from H.W 1876 * 1877 * @soc: DP soc 1878 * @pkt_len: Packet length received from H.W 1879 * 1880 * Return: NONE 1881 */ 1882 static inline void 1883 dp_rx_desc_nbuf_len_sanity_check(struct dp_soc *soc, 1884 uint32_t pkt_len) 1885 { 1886 struct rx_desc_pool *rx_desc_pool; 1887 1888 rx_desc_pool = &soc->rx_desc_buf[0]; 1889 qdf_assert_always(pkt_len <= rx_desc_pool->buf_size); 1890 } 1891 #else 1892 static inline void 1893 dp_rx_desc_nbuf_len_sanity_check(struct dp_soc *soc, uint32_t pkt_len) { } 1894 #endif 1895 1896 #ifdef DP_RX_PKT_NO_PEER_DELIVER 1897 /** 1898 * dp_rx_deliver_to_stack_no_peer() - try deliver rx data even if 1899 * no corresbonding peer found 1900 * @soc: core txrx main context 1901 * @nbuf: pkt skb pointer 1902 * 1903 * This function will try to deliver some RX special frames to stack 1904 * even there is no peer matched found. for instance, LFR case, some 1905 * eapol data will be sent to host before peer_map done. 1906 * 1907 * Return: None 1908 */ 1909 void dp_rx_deliver_to_stack_no_peer(struct dp_soc *soc, qdf_nbuf_t nbuf) 1910 { 1911 uint16_t peer_id; 1912 uint8_t vdev_id; 1913 struct dp_vdev *vdev = NULL; 1914 uint32_t l2_hdr_offset = 0; 1915 uint16_t msdu_len = 0; 1916 uint32_t pkt_len = 0; 1917 uint8_t *rx_tlv_hdr; 1918 uint32_t frame_mask = FRAME_MASK_IPV4_ARP | FRAME_MASK_IPV4_DHCP | 1919 FRAME_MASK_IPV4_EAPOL | FRAME_MASK_IPV6_DHCP; 1920 1921 peer_id = QDF_NBUF_CB_RX_PEER_ID(nbuf); 1922 if (peer_id > soc->max_peers) 1923 goto deliver_fail; 1924 1925 vdev_id = QDF_NBUF_CB_RX_VDEV_ID(nbuf); 1926 vdev = dp_vdev_get_ref_by_id(soc, vdev_id, DP_MOD_ID_RX); 1927 if (!vdev || vdev->delete.pending || !vdev->osif_rx) 1928 goto deliver_fail; 1929 1930 if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) 1931 goto deliver_fail; 1932 1933 rx_tlv_hdr = qdf_nbuf_data(nbuf); 1934 l2_hdr_offset = 1935 hal_rx_msdu_end_l3_hdr_padding_get(soc->hal_soc, rx_tlv_hdr); 1936 1937 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 1938 pkt_len = msdu_len + l2_hdr_offset + soc->rx_pkt_tlv_size; 1939 QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(nbuf) = 1; 1940 1941 qdf_nbuf_set_pktlen(nbuf, pkt_len); 1942 qdf_nbuf_pull_head(nbuf, soc->rx_pkt_tlv_size + l2_hdr_offset); 1943 1944 if (dp_rx_is_special_frame(nbuf, frame_mask)) { 1945 qdf_nbuf_set_exc_frame(nbuf, 1); 1946 if (QDF_STATUS_SUCCESS != 1947 vdev->osif_rx(vdev->osif_vdev, nbuf)) 1948 goto deliver_fail; 1949 DP_STATS_INC(soc, rx.err.pkt_delivered_no_peer, 1); 1950 dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_RX); 1951 return; 1952 } 1953 1954 deliver_fail: 1955 DP_STATS_INC_PKT(soc, rx.err.rx_invalid_peer, 1, 1956 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 1957 qdf_nbuf_free(nbuf); 1958 if (vdev) 1959 dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_RX); 1960 } 1961 #else 1962 void dp_rx_deliver_to_stack_no_peer(struct dp_soc *soc, qdf_nbuf_t nbuf) 1963 { 1964 DP_STATS_INC_PKT(soc, rx.err.rx_invalid_peer, 1, 1965 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 1966 qdf_nbuf_free(nbuf); 1967 } 1968 #endif 1969 1970 /** 1971 * dp_rx_srng_get_num_pending() - get number of pending entries 1972 * @hal_soc: hal soc opaque pointer 1973 * @hal_ring: opaque pointer to the HAL Rx Ring 1974 * @num_entries: number of entries in the hal_ring. 1975 * @near_full: pointer to a boolean. This is set if ring is near full. 1976 * 1977 * The function returns the number of entries in a destination ring which are 1978 * yet to be reaped. The function also checks if the ring is near full. 1979 * If more than half of the ring needs to be reaped, the ring is considered 1980 * approaching full. 1981 * The function useses hal_srng_dst_num_valid_locked to get the number of valid 1982 * entries. It should not be called within a SRNG lock. HW pointer value is 1983 * synced into cached_hp. 1984 * 1985 * Return: Number of pending entries if any 1986 */ 1987 uint32_t dp_rx_srng_get_num_pending(hal_soc_handle_t hal_soc, 1988 hal_ring_handle_t hal_ring_hdl, 1989 uint32_t num_entries, 1990 bool *near_full) 1991 { 1992 uint32_t num_pending = 0; 1993 1994 num_pending = hal_srng_dst_num_valid_locked(hal_soc, 1995 hal_ring_hdl, 1996 true); 1997 1998 if (num_entries && (num_pending >= num_entries >> 1)) 1999 *near_full = true; 2000 else 2001 *near_full = false; 2002 2003 return num_pending; 2004 } 2005 2006 #endif /* QCA_HOST_MODE_WIFI_DISABLED */ 2007 2008 #ifdef WLAN_SUPPORT_RX_FISA 2009 void dp_rx_skip_tlvs(struct dp_soc *soc, qdf_nbuf_t nbuf, uint32_t l3_padding) 2010 { 2011 QDF_NBUF_CB_RX_PACKET_L3_HDR_PAD(nbuf) = l3_padding; 2012 qdf_nbuf_pull_head(nbuf, l3_padding + soc->rx_pkt_tlv_size); 2013 } 2014 2015 /** 2016 * dp_rx_set_hdr_pad() - set l3 padding in nbuf cb 2017 * @nbuf: pkt skb pointer 2018 * @l3_padding: l3 padding 2019 * 2020 * Return: None 2021 */ 2022 static inline 2023 void dp_rx_set_hdr_pad(qdf_nbuf_t nbuf, uint32_t l3_padding) 2024 { 2025 QDF_NBUF_CB_RX_PACKET_L3_HDR_PAD(nbuf) = l3_padding; 2026 } 2027 #else 2028 void dp_rx_skip_tlvs(struct dp_soc *soc, qdf_nbuf_t nbuf, uint32_t l3_padding) 2029 { 2030 qdf_nbuf_pull_head(nbuf, l3_padding + soc->rx_pkt_tlv_size); 2031 } 2032 2033 static inline 2034 void dp_rx_set_hdr_pad(qdf_nbuf_t nbuf, uint32_t l3_padding) 2035 { 2036 } 2037 #endif 2038 2039 #ifndef QCA_HOST_MODE_WIFI_DISABLED 2040 2041 #ifdef DP_RX_DROP_RAW_FRM 2042 /** 2043 * dp_rx_is_raw_frame_dropped() - if raw frame nbuf, free and drop 2044 * @nbuf: pkt skb pointer 2045 * 2046 * Return: true - raw frame, dropped 2047 * false - not raw frame, do nothing 2048 */ 2049 bool dp_rx_is_raw_frame_dropped(qdf_nbuf_t nbuf) 2050 { 2051 if (qdf_nbuf_is_raw_frame(nbuf)) { 2052 qdf_nbuf_free(nbuf); 2053 return true; 2054 } 2055 2056 return false; 2057 } 2058 #endif 2059 2060 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY 2061 /** 2062 * dp_rx_ring_record_entry() - Record an entry into the rx ring history. 2063 * @soc: Datapath soc structure 2064 * @ring_num: REO ring number 2065 * @ring_desc: REO ring descriptor 2066 * 2067 * Returns: None 2068 */ 2069 void 2070 dp_rx_ring_record_entry(struct dp_soc *soc, uint8_t ring_num, 2071 hal_ring_desc_t ring_desc) 2072 { 2073 struct dp_buf_info_record *record; 2074 struct hal_buf_info hbi; 2075 uint32_t idx; 2076 2077 if (qdf_unlikely(!soc->rx_ring_history[ring_num])) 2078 return; 2079 2080 hal_rx_reo_buf_paddr_get(soc->hal_soc, ring_desc, &hbi); 2081 2082 /* buffer_addr_info is the first element of ring_desc */ 2083 hal_rx_buf_cookie_rbm_get(soc->hal_soc, (uint32_t *)ring_desc, 2084 &hbi); 2085 2086 idx = dp_history_get_next_index(&soc->rx_ring_history[ring_num]->index, 2087 DP_RX_HIST_MAX); 2088 2089 /* No NULL check needed for record since its an array */ 2090 record = &soc->rx_ring_history[ring_num]->entry[idx]; 2091 2092 record->timestamp = qdf_get_log_timestamp(); 2093 record->hbi.paddr = hbi.paddr; 2094 record->hbi.sw_cookie = hbi.sw_cookie; 2095 record->hbi.rbm = hbi.rbm; 2096 } 2097 #endif 2098 2099 #ifdef WLAN_DP_FEATURE_SW_LATENCY_MGR 2100 /** 2101 * dp_rx_update_stats() - Update soc level rx packet count 2102 * @soc: DP soc handle 2103 * @nbuf: nbuf received 2104 * 2105 * Returns: none 2106 */ 2107 void dp_rx_update_stats(struct dp_soc *soc, qdf_nbuf_t nbuf) 2108 { 2109 DP_STATS_INC_PKT(soc, rx.ingress, 1, 2110 QDF_NBUF_CB_RX_PKT_LEN(nbuf)); 2111 } 2112 #endif 2113 2114 #ifdef WLAN_FEATURE_PKT_CAPTURE_V2 2115 /** 2116 * dp_rx_deliver_to_pkt_capture() - deliver rx packet to packet capture 2117 * @soc : dp_soc handle 2118 * @pdev: dp_pdev handle 2119 * @peer_id: peer_id of the peer for which completion came 2120 * @ppdu_id: ppdu_id 2121 * @netbuf: Buffer pointer 2122 * 2123 * This function is used to deliver rx packet to packet capture 2124 */ 2125 void dp_rx_deliver_to_pkt_capture(struct dp_soc *soc, struct dp_pdev *pdev, 2126 uint16_t peer_id, uint32_t is_offload, 2127 qdf_nbuf_t netbuf) 2128 { 2129 if (wlan_cfg_get_pkt_capture_mode(soc->wlan_cfg_ctx)) 2130 dp_wdi_event_handler(WDI_EVENT_PKT_CAPTURE_RX_DATA, soc, netbuf, 2131 peer_id, is_offload, pdev->pdev_id); 2132 } 2133 2134 void dp_rx_deliver_to_pkt_capture_no_peer(struct dp_soc *soc, qdf_nbuf_t nbuf, 2135 uint32_t is_offload) 2136 { 2137 if (wlan_cfg_get_pkt_capture_mode(soc->wlan_cfg_ctx)) 2138 dp_wdi_event_handler(WDI_EVENT_PKT_CAPTURE_RX_DATA_NO_PEER, 2139 soc, nbuf, HTT_INVALID_VDEV, 2140 is_offload, 0); 2141 } 2142 #endif 2143 2144 #endif /* QCA_HOST_MODE_WIFI_DISABLED */ 2145 2146 QDF_STATUS dp_rx_vdev_detach(struct dp_vdev *vdev) 2147 { 2148 QDF_STATUS ret; 2149 2150 if (vdev->osif_rx_flush) { 2151 ret = vdev->osif_rx_flush(vdev->osif_vdev, vdev->vdev_id); 2152 if (!QDF_IS_STATUS_SUCCESS(ret)) { 2153 dp_err("Failed to flush rx pkts for vdev %d\n", 2154 vdev->vdev_id); 2155 return ret; 2156 } 2157 } 2158 2159 return QDF_STATUS_SUCCESS; 2160 } 2161 2162 static QDF_STATUS 2163 dp_pdev_nbuf_alloc_and_map(struct dp_soc *dp_soc, 2164 struct dp_rx_nbuf_frag_info *nbuf_frag_info_t, 2165 struct dp_pdev *dp_pdev, 2166 struct rx_desc_pool *rx_desc_pool) 2167 { 2168 QDF_STATUS ret = QDF_STATUS_E_FAILURE; 2169 2170 (nbuf_frag_info_t->virt_addr).nbuf = 2171 qdf_nbuf_alloc(dp_soc->osdev, rx_desc_pool->buf_size, 2172 RX_BUFFER_RESERVATION, 2173 rx_desc_pool->buf_alignment, FALSE); 2174 if (!((nbuf_frag_info_t->virt_addr).nbuf)) { 2175 dp_err("nbuf alloc failed"); 2176 DP_STATS_INC(dp_pdev, replenish.nbuf_alloc_fail, 1); 2177 return ret; 2178 } 2179 2180 ret = qdf_nbuf_map_nbytes_single(dp_soc->osdev, 2181 (nbuf_frag_info_t->virt_addr).nbuf, 2182 QDF_DMA_FROM_DEVICE, 2183 rx_desc_pool->buf_size); 2184 2185 if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) { 2186 qdf_nbuf_free((nbuf_frag_info_t->virt_addr).nbuf); 2187 dp_err("nbuf map failed"); 2188 DP_STATS_INC(dp_pdev, replenish.map_err, 1); 2189 return ret; 2190 } 2191 2192 nbuf_frag_info_t->paddr = 2193 qdf_nbuf_get_frag_paddr((nbuf_frag_info_t->virt_addr).nbuf, 0); 2194 2195 ret = dp_check_paddr(dp_soc, &((nbuf_frag_info_t->virt_addr).nbuf), 2196 &nbuf_frag_info_t->paddr, 2197 rx_desc_pool); 2198 if (ret == QDF_STATUS_E_FAILURE) { 2199 dp_err("nbuf check x86 failed"); 2200 DP_STATS_INC(dp_pdev, replenish.x86_fail, 1); 2201 return ret; 2202 } 2203 2204 return QDF_STATUS_SUCCESS; 2205 } 2206 2207 QDF_STATUS 2208 dp_pdev_rx_buffers_attach(struct dp_soc *dp_soc, uint32_t mac_id, 2209 struct dp_srng *dp_rxdma_srng, 2210 struct rx_desc_pool *rx_desc_pool, 2211 uint32_t num_req_buffers) 2212 { 2213 struct dp_pdev *dp_pdev = dp_get_pdev_for_lmac_id(dp_soc, mac_id); 2214 hal_ring_handle_t rxdma_srng = dp_rxdma_srng->hal_srng; 2215 union dp_rx_desc_list_elem_t *next; 2216 void *rxdma_ring_entry; 2217 qdf_dma_addr_t paddr; 2218 struct dp_rx_nbuf_frag_info *nf_info; 2219 uint32_t nr_descs, nr_nbuf = 0, nr_nbuf_total = 0; 2220 uint32_t buffer_index, nbuf_ptrs_per_page; 2221 qdf_nbuf_t nbuf; 2222 QDF_STATUS ret; 2223 int page_idx, total_pages; 2224 union dp_rx_desc_list_elem_t *desc_list = NULL; 2225 union dp_rx_desc_list_elem_t *tail = NULL; 2226 int sync_hw_ptr = 1; 2227 uint32_t num_entries_avail; 2228 2229 if (qdf_unlikely(!dp_pdev)) { 2230 dp_rx_err("%pK: pdev is null for mac_id = %d", 2231 dp_soc, mac_id); 2232 return QDF_STATUS_E_FAILURE; 2233 } 2234 2235 if (qdf_unlikely(!rxdma_srng)) { 2236 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 2237 return QDF_STATUS_E_FAILURE; 2238 } 2239 2240 dp_debug("requested %u RX buffers for driver attach", num_req_buffers); 2241 2242 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 2243 num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc, 2244 rxdma_srng, 2245 sync_hw_ptr); 2246 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 2247 2248 if (!num_entries_avail) { 2249 dp_err("Num of available entries is zero, nothing to do"); 2250 return QDF_STATUS_E_NOMEM; 2251 } 2252 2253 if (num_entries_avail < num_req_buffers) 2254 num_req_buffers = num_entries_avail; 2255 2256 nr_descs = dp_rx_get_free_desc_list(dp_soc, mac_id, rx_desc_pool, 2257 num_req_buffers, &desc_list, &tail); 2258 if (!nr_descs) { 2259 dp_err("no free rx_descs in freelist"); 2260 DP_STATS_INC(dp_pdev, err.desc_alloc_fail, num_req_buffers); 2261 return QDF_STATUS_E_NOMEM; 2262 } 2263 2264 dp_debug("got %u RX descs for driver attach", nr_descs); 2265 2266 /* 2267 * Try to allocate pointers to the nbuf one page at a time. 2268 * Take pointers that can fit in one page of memory and 2269 * iterate through the total descriptors that need to be 2270 * allocated in order of pages. Reuse the pointers that 2271 * have been allocated to fit in one page across each 2272 * iteration to index into the nbuf. 2273 */ 2274 total_pages = (nr_descs * sizeof(*nf_info)) / PAGE_SIZE; 2275 2276 /* 2277 * Add an extra page to store the remainder if any 2278 */ 2279 if ((nr_descs * sizeof(*nf_info)) % PAGE_SIZE) 2280 total_pages++; 2281 nf_info = qdf_mem_malloc(PAGE_SIZE); 2282 if (!nf_info) { 2283 dp_err("failed to allocate nbuf array"); 2284 DP_STATS_INC(dp_pdev, replenish.rxdma_err, num_req_buffers); 2285 QDF_BUG(0); 2286 return QDF_STATUS_E_NOMEM; 2287 } 2288 nbuf_ptrs_per_page = PAGE_SIZE / sizeof(*nf_info); 2289 2290 for (page_idx = 0; page_idx < total_pages; page_idx++) { 2291 qdf_mem_zero(nf_info, PAGE_SIZE); 2292 2293 for (nr_nbuf = 0; nr_nbuf < nbuf_ptrs_per_page; nr_nbuf++) { 2294 /* 2295 * The last page of buffer pointers may not be required 2296 * completely based on the number of descriptors. Below 2297 * check will ensure we are allocating only the 2298 * required number of descriptors. 2299 */ 2300 if (nr_nbuf_total >= nr_descs) 2301 break; 2302 /* Flag is set while pdev rx_desc_pool initialization */ 2303 if (qdf_unlikely(rx_desc_pool->rx_mon_dest_frag_enable)) 2304 ret = dp_pdev_frag_alloc_and_map(dp_soc, 2305 &nf_info[nr_nbuf], dp_pdev, 2306 rx_desc_pool); 2307 else 2308 ret = dp_pdev_nbuf_alloc_and_map(dp_soc, 2309 &nf_info[nr_nbuf], dp_pdev, 2310 rx_desc_pool); 2311 if (QDF_IS_STATUS_ERROR(ret)) 2312 break; 2313 2314 nr_nbuf_total++; 2315 } 2316 2317 hal_srng_access_start(dp_soc->hal_soc, rxdma_srng); 2318 2319 for (buffer_index = 0; buffer_index < nr_nbuf; buffer_index++) { 2320 rxdma_ring_entry = 2321 hal_srng_src_get_next(dp_soc->hal_soc, 2322 rxdma_srng); 2323 qdf_assert_always(rxdma_ring_entry); 2324 2325 next = desc_list->next; 2326 paddr = nf_info[buffer_index].paddr; 2327 nbuf = nf_info[buffer_index].virt_addr.nbuf; 2328 2329 /* Flag is set while pdev rx_desc_pool initialization */ 2330 if (qdf_unlikely(rx_desc_pool->rx_mon_dest_frag_enable)) 2331 dp_rx_desc_frag_prep(&desc_list->rx_desc, 2332 &nf_info[buffer_index]); 2333 else 2334 dp_rx_desc_prep(&desc_list->rx_desc, 2335 &nf_info[buffer_index]); 2336 desc_list->rx_desc.in_use = 1; 2337 dp_rx_desc_alloc_dbg_info(&desc_list->rx_desc); 2338 dp_rx_desc_update_dbg_info(&desc_list->rx_desc, 2339 __func__, 2340 RX_DESC_REPLENISHED); 2341 2342 hal_rxdma_buff_addr_info_set(dp_soc->hal_soc ,rxdma_ring_entry, paddr, 2343 desc_list->rx_desc.cookie, 2344 rx_desc_pool->owner); 2345 dp_ipa_handle_rx_buf_smmu_mapping( 2346 dp_soc, nbuf, 2347 rx_desc_pool->buf_size, 2348 true); 2349 2350 desc_list = next; 2351 } 2352 2353 dp_rx_refill_ring_record_entry(dp_soc, dp_pdev->lmac_id, 2354 rxdma_srng, nr_nbuf, nr_nbuf); 2355 hal_srng_access_end(dp_soc->hal_soc, rxdma_srng); 2356 } 2357 2358 dp_info("filled %u RX buffers for driver attach", nr_nbuf_total); 2359 qdf_mem_free(nf_info); 2360 2361 if (!nr_nbuf_total) { 2362 dp_err("No nbuf's allocated"); 2363 QDF_BUG(0); 2364 return QDF_STATUS_E_RESOURCES; 2365 } 2366 2367 /* No need to count the number of bytes received during replenish. 2368 * Therefore set replenish.pkts.bytes as 0. 2369 */ 2370 DP_STATS_INC_PKT(dp_pdev, replenish.pkts, nr_nbuf, 0); 2371 2372 return QDF_STATUS_SUCCESS; 2373 } 2374 2375 qdf_export_symbol(dp_pdev_rx_buffers_attach); 2376 2377 /** 2378 * dp_rx_enable_mon_dest_frag() - Enable frag processing for 2379 * monitor destination ring via frag. 2380 * 2381 * Enable this flag only for monitor destination buffer processing 2382 * if DP_RX_MON_MEM_FRAG feature is enabled. 2383 * If flag is set then frag based function will be called for alloc, 2384 * map, prep desc and free ops for desc buffer else normal nbuf based 2385 * function will be called. 2386 * 2387 * @rx_desc_pool: Rx desc pool 2388 * @is_mon_dest_desc: Is it for monitor dest buffer 2389 * 2390 * Return: None 2391 */ 2392 #ifdef DP_RX_MON_MEM_FRAG 2393 void dp_rx_enable_mon_dest_frag(struct rx_desc_pool *rx_desc_pool, 2394 bool is_mon_dest_desc) 2395 { 2396 rx_desc_pool->rx_mon_dest_frag_enable = is_mon_dest_desc; 2397 if (is_mon_dest_desc) 2398 dp_alert("Feature DP_RX_MON_MEM_FRAG for mon_dest is enabled"); 2399 } 2400 #else 2401 void dp_rx_enable_mon_dest_frag(struct rx_desc_pool *rx_desc_pool, 2402 bool is_mon_dest_desc) 2403 { 2404 rx_desc_pool->rx_mon_dest_frag_enable = false; 2405 if (is_mon_dest_desc) 2406 dp_alert("Feature DP_RX_MON_MEM_FRAG for mon_dest is disabled"); 2407 } 2408 #endif 2409 2410 qdf_export_symbol(dp_rx_enable_mon_dest_frag); 2411 2412 /* 2413 * dp_rx_pdev_desc_pool_alloc() - allocate memory for software rx descriptor 2414 * pool 2415 * 2416 * @pdev: core txrx pdev context 2417 * 2418 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2419 * QDF_STATUS_E_NOMEM 2420 */ 2421 QDF_STATUS 2422 dp_rx_pdev_desc_pool_alloc(struct dp_pdev *pdev) 2423 { 2424 struct dp_soc *soc = pdev->soc; 2425 uint32_t rxdma_entries; 2426 uint32_t rx_sw_desc_num; 2427 struct dp_srng *dp_rxdma_srng; 2428 struct rx_desc_pool *rx_desc_pool; 2429 uint32_t status = QDF_STATUS_SUCCESS; 2430 int mac_for_pdev; 2431 2432 mac_for_pdev = pdev->lmac_id; 2433 if (wlan_cfg_get_dp_pdev_nss_enabled(pdev->wlan_cfg_ctx)) { 2434 dp_rx_info("%pK: nss-wifi<4> skip Rx refil %d", 2435 soc, mac_for_pdev); 2436 return status; 2437 } 2438 2439 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2440 rxdma_entries = dp_rxdma_srng->num_entries; 2441 2442 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2443 rx_sw_desc_num = wlan_cfg_get_dp_soc_rx_sw_desc_num(soc->wlan_cfg_ctx); 2444 2445 rx_desc_pool->desc_type = DP_RX_DESC_BUF_TYPE; 2446 status = dp_rx_desc_pool_alloc(soc, 2447 rx_sw_desc_num, 2448 rx_desc_pool); 2449 if (status != QDF_STATUS_SUCCESS) 2450 return status; 2451 2452 return status; 2453 } 2454 2455 /* 2456 * dp_rx_pdev_desc_pool_free() - free software rx descriptor pool 2457 * 2458 * @pdev: core txrx pdev context 2459 */ 2460 void dp_rx_pdev_desc_pool_free(struct dp_pdev *pdev) 2461 { 2462 int mac_for_pdev = pdev->lmac_id; 2463 struct dp_soc *soc = pdev->soc; 2464 struct rx_desc_pool *rx_desc_pool; 2465 2466 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2467 2468 dp_rx_desc_pool_free(soc, rx_desc_pool); 2469 } 2470 2471 /* 2472 * dp_rx_pdev_desc_pool_init() - initialize software rx descriptors 2473 * 2474 * @pdev: core txrx pdev context 2475 * 2476 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2477 * QDF_STATUS_E_NOMEM 2478 */ 2479 QDF_STATUS dp_rx_pdev_desc_pool_init(struct dp_pdev *pdev) 2480 { 2481 int mac_for_pdev = pdev->lmac_id; 2482 struct dp_soc *soc = pdev->soc; 2483 uint32_t rxdma_entries; 2484 uint32_t rx_sw_desc_num; 2485 struct dp_srng *dp_rxdma_srng; 2486 struct rx_desc_pool *rx_desc_pool; 2487 2488 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2489 if (wlan_cfg_get_dp_pdev_nss_enabled(pdev->wlan_cfg_ctx)) { 2490 /** 2491 * If NSS is enabled, rx_desc_pool is already filled. 2492 * Hence, just disable desc_pool frag flag. 2493 */ 2494 dp_rx_enable_mon_dest_frag(rx_desc_pool, false); 2495 2496 dp_rx_info("%pK: nss-wifi<4> skip Rx refil %d", 2497 soc, mac_for_pdev); 2498 return QDF_STATUS_SUCCESS; 2499 } 2500 2501 if (dp_rx_desc_pool_is_allocated(rx_desc_pool) == QDF_STATUS_E_NOMEM) 2502 return QDF_STATUS_E_NOMEM; 2503 2504 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2505 rxdma_entries = dp_rxdma_srng->num_entries; 2506 2507 soc->process_rx_status = CONFIG_PROCESS_RX_STATUS; 2508 2509 rx_sw_desc_num = 2510 wlan_cfg_get_dp_soc_rx_sw_desc_num(soc->wlan_cfg_ctx); 2511 2512 rx_desc_pool->owner = DP_WBM2SW_RBM(soc->wbm_sw0_bm_id); 2513 rx_desc_pool->buf_size = RX_DATA_BUFFER_SIZE; 2514 rx_desc_pool->buf_alignment = RX_DATA_BUFFER_ALIGNMENT; 2515 /* Disable monitor dest processing via frag */ 2516 dp_rx_enable_mon_dest_frag(rx_desc_pool, false); 2517 2518 dp_rx_desc_pool_init(soc, mac_for_pdev, 2519 rx_sw_desc_num, rx_desc_pool); 2520 return QDF_STATUS_SUCCESS; 2521 } 2522 2523 /* 2524 * dp_rx_pdev_desc_pool_deinit() - de-initialize software rx descriptor pools 2525 * @pdev: core txrx pdev context 2526 * 2527 * This function resets the freelist of rx descriptors and destroys locks 2528 * associated with this list of descriptors. 2529 */ 2530 void dp_rx_pdev_desc_pool_deinit(struct dp_pdev *pdev) 2531 { 2532 int mac_for_pdev = pdev->lmac_id; 2533 struct dp_soc *soc = pdev->soc; 2534 struct rx_desc_pool *rx_desc_pool; 2535 2536 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2537 2538 dp_rx_desc_pool_deinit(soc, rx_desc_pool, mac_for_pdev); 2539 } 2540 2541 /* 2542 * dp_rx_pdev_buffers_alloc() - Allocate nbufs (skbs) and replenish RxDMA ring 2543 * 2544 * @pdev: core txrx pdev context 2545 * 2546 * Return: QDF_STATUS - QDF_STATUS_SUCCESS 2547 * QDF_STATUS_E_NOMEM 2548 */ 2549 QDF_STATUS 2550 dp_rx_pdev_buffers_alloc(struct dp_pdev *pdev) 2551 { 2552 int mac_for_pdev = pdev->lmac_id; 2553 struct dp_soc *soc = pdev->soc; 2554 struct dp_srng *dp_rxdma_srng; 2555 struct rx_desc_pool *rx_desc_pool; 2556 uint32_t rxdma_entries; 2557 2558 dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_for_pdev]; 2559 rxdma_entries = dp_rxdma_srng->num_entries; 2560 2561 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2562 2563 /* Initialize RX buffer pool which will be 2564 * used during low memory conditions 2565 */ 2566 dp_rx_buffer_pool_init(soc, mac_for_pdev); 2567 2568 return dp_pdev_rx_buffers_attach(soc, mac_for_pdev, dp_rxdma_srng, 2569 rx_desc_pool, rxdma_entries - 1); 2570 } 2571 2572 /* 2573 * dp_rx_pdev_buffers_free - Free nbufs (skbs) 2574 * 2575 * @pdev: core txrx pdev context 2576 */ 2577 void 2578 dp_rx_pdev_buffers_free(struct dp_pdev *pdev) 2579 { 2580 int mac_for_pdev = pdev->lmac_id; 2581 struct dp_soc *soc = pdev->soc; 2582 struct rx_desc_pool *rx_desc_pool; 2583 2584 rx_desc_pool = &soc->rx_desc_buf[mac_for_pdev]; 2585 2586 dp_rx_desc_nbuf_free(soc, rx_desc_pool); 2587 dp_rx_buffer_pool_deinit(soc, mac_for_pdev); 2588 } 2589 2590 #ifdef DP_RX_SPECIAL_FRAME_NEED 2591 bool dp_rx_deliver_special_frame(struct dp_soc *soc, struct dp_peer *peer, 2592 qdf_nbuf_t nbuf, uint32_t frame_mask, 2593 uint8_t *rx_tlv_hdr) 2594 { 2595 uint32_t l2_hdr_offset = 0; 2596 uint16_t msdu_len = 0; 2597 uint32_t skip_len; 2598 2599 l2_hdr_offset = 2600 hal_rx_msdu_end_l3_hdr_padding_get(soc->hal_soc, rx_tlv_hdr); 2601 2602 if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) { 2603 skip_len = l2_hdr_offset; 2604 } else { 2605 msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); 2606 skip_len = l2_hdr_offset + soc->rx_pkt_tlv_size; 2607 qdf_nbuf_set_pktlen(nbuf, msdu_len + skip_len); 2608 } 2609 2610 QDF_NBUF_CB_RX_NUM_ELEMENTS_IN_LIST(nbuf) = 1; 2611 dp_rx_set_hdr_pad(nbuf, l2_hdr_offset); 2612 qdf_nbuf_pull_head(nbuf, skip_len); 2613 2614 if (dp_rx_is_special_frame(nbuf, frame_mask)) { 2615 dp_info("special frame, mpdu sn 0x%x", 2616 hal_rx_get_rx_sequence(soc->hal_soc, rx_tlv_hdr)); 2617 qdf_nbuf_set_exc_frame(nbuf, 1); 2618 dp_rx_deliver_to_stack(soc, peer->vdev, peer, 2619 nbuf, NULL); 2620 return true; 2621 } 2622 2623 return false; 2624 } 2625 #endif 2626