/* * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved. * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for * any purpose with or without fee is hereby granted, provided that the * above copyright notice and this permission notice appear in all * copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ #include "cdp_txrx_cmn_struct.h" #include "hal_hw_headers.h" #include "dp_types.h" #include "dp_rx.h" #include "dp_li_rx.h" #include "dp_peer.h" #include "hal_rx.h" #include "hal_li_rx.h" #include "hal_api.h" #include "hal_li_api.h" #include "qdf_nbuf.h" #ifdef MESH_MODE_SUPPORT #include "if_meta_hdr.h" #endif #include "dp_internal.h" #include "dp_ipa.h" #ifdef WIFI_MONITOR_SUPPORT #include #endif #ifdef FEATURE_WDS #include "dp_txrx_wds.h" #endif #include "dp_hist.h" #include "dp_rx_buffer_pool.h" #include "dp_li.h" static inline bool is_sa_da_idx_valid(uint32_t max_ast, qdf_nbuf_t nbuf, struct hal_rx_msdu_metadata msdu_info) { if ((qdf_nbuf_is_sa_valid(nbuf) && (msdu_info.sa_idx > max_ast)) || (!qdf_nbuf_is_da_mcbc(nbuf) && qdf_nbuf_is_da_valid(nbuf) && (msdu_info.da_idx > max_ast))) return false; return true; } #ifndef QCA_HOST_MODE_WIFI_DISABLED #if defined(FEATURE_MCL_REPEATER) && defined(FEATURE_MEC) /** * dp_rx_mec_check_wrapper() - wrapper to dp_rx_mcast_echo_check * @soc: core DP main context * @peer: dp peer handler * @rx_tlv_hdr: start of the rx TLV header * @nbuf: pkt buffer * * Return: bool (true if it is a looped back pkt else false) */ static inline bool dp_rx_mec_check_wrapper(struct dp_soc *soc, struct dp_txrx_peer *txrx_peer, uint8_t *rx_tlv_hdr, qdf_nbuf_t nbuf) { return dp_rx_mcast_echo_check(soc, txrx_peer, rx_tlv_hdr, nbuf); } #else static inline bool dp_rx_mec_check_wrapper(struct dp_soc *soc, struct dp_txrx_peer *txrx_peer, uint8_t *rx_tlv_hdr, qdf_nbuf_t nbuf) { return false; } #endif #endif #ifndef QCA_HOST_MODE_WIFI_DISABLE static bool dp_rx_intrabss_ucast_check_li(struct dp_soc *soc, qdf_nbuf_t nbuf, struct dp_txrx_peer *ta_txrx_peer, struct hal_rx_msdu_metadata *msdu_metadata, uint8_t *p_tx_vdev_id) { uint16_t da_peer_id; struct dp_txrx_peer *da_peer; struct dp_ast_entry *ast_entry; dp_txrx_ref_handle txrx_ref_handle = NULL; if (!qdf_nbuf_is_da_valid(nbuf) || qdf_nbuf_is_da_mcbc(nbuf)) return false; ast_entry = soc->ast_table[msdu_metadata->da_idx]; if (!ast_entry) return false; if (ast_entry->type == CDP_TXRX_AST_TYPE_DA) { ast_entry->is_active = TRUE; return false; } da_peer_id = ast_entry->peer_id; /* TA peer cannot be same as peer(DA) on which AST is present * this indicates a change in topology and that AST entries * are yet to be updated. */ if (da_peer_id == ta_txrx_peer->peer_id || da_peer_id == HTT_INVALID_PEER) return false; da_peer = dp_txrx_peer_get_ref_by_id(soc, da_peer_id, &txrx_ref_handle, DP_MOD_ID_RX); if (!da_peer) return false; *p_tx_vdev_id = da_peer->vdev->vdev_id; /* If the source or destination peer in the isolation * list then dont forward instead push to bridge stack. */ if (dp_get_peer_isolation(ta_txrx_peer) || dp_get_peer_isolation(da_peer) || da_peer->vdev->vdev_id != ta_txrx_peer->vdev->vdev_id) { dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX); return false; } if (da_peer->bss_peer) { dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX); return false; } dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX); return true; } /* * dp_rx_intrabss_fwd_li() - Implements the Intra-BSS forwarding logic * * @soc: core txrx main context * @ta_txrx_peer : source peer entry * @rx_tlv_hdr : start address of rx tlvs * @nbuf : nbuf that has to be intrabss forwarded * * Return: bool: true if it is forwarded else false */ static bool dp_rx_intrabss_fwd_li(struct dp_soc *soc, struct dp_txrx_peer *ta_txrx_peer, uint8_t *rx_tlv_hdr, qdf_nbuf_t nbuf, struct hal_rx_msdu_metadata msdu_metadata, struct cdp_tid_rx_stats *tid_stats) { uint8_t tx_vdev_id; /* if it is a broadcast pkt (eg: ARP) and it is not its own * source, then clone the pkt and send the cloned pkt for * intra BSS forwarding and original pkt up the network stack * Note: how do we handle multicast pkts. do we forward * all multicast pkts as is or let a higher layer module * like igmpsnoop decide whether to forward or not with * Mcast enhancement. */ if (qdf_nbuf_is_da_mcbc(nbuf) && !ta_txrx_peer->bss_peer) return dp_rx_intrabss_mcbc_fwd(soc, ta_txrx_peer, rx_tlv_hdr, nbuf, tid_stats); if (dp_rx_intrabss_eapol_drop_check(soc, ta_txrx_peer, rx_tlv_hdr, nbuf)) return true; if (dp_rx_intrabss_ucast_check_li(soc, nbuf, ta_txrx_peer, &msdu_metadata, &tx_vdev_id)) return dp_rx_intrabss_ucast_fwd(soc, ta_txrx_peer, tx_vdev_id, rx_tlv_hdr, nbuf, tid_stats); return false; } #endif /** * dp_rx_process_li() - Brain of the Rx processing functionality * Called from the bottom half (tasklet/NET_RX_SOFTIRQ) * @int_ctx: per interrupt context * @hal_ring: opaque pointer to the HAL Rx Ring, which will be serviced * @reo_ring_num: ring number (0, 1, 2 or 3) of the reo ring. * @quota: No. of units (packets) that can be serviced in one shot. * * This function implements the core of Rx functionality. This is * expected to handle only non-error frames. * * Return: uint32_t: No. of elements processed */ uint32_t dp_rx_process_li(struct dp_intr *int_ctx, hal_ring_handle_t hal_ring_hdl, uint8_t reo_ring_num, uint32_t quota) { hal_ring_desc_t ring_desc; hal_ring_desc_t last_prefetched_hw_desc; hal_soc_handle_t hal_soc; struct dp_rx_desc *rx_desc = NULL; struct dp_rx_desc *last_prefetched_sw_desc = NULL; qdf_nbuf_t nbuf, next; bool near_full; union dp_rx_desc_list_elem_t *head[MAX_PDEV_CNT]; union dp_rx_desc_list_elem_t *tail[MAX_PDEV_CNT]; uint32_t num_pending = 0; uint32_t rx_bufs_used = 0, rx_buf_cookie; uint16_t msdu_len = 0; uint16_t peer_id; uint8_t vdev_id; struct dp_txrx_peer *txrx_peer; dp_txrx_ref_handle txrx_ref_handle = NULL; struct dp_vdev *vdev; uint32_t pkt_len = 0; struct hal_rx_mpdu_desc_info mpdu_desc_info; struct hal_rx_msdu_desc_info msdu_desc_info; enum hal_reo_error_status error; uint32_t peer_mdata; uint8_t *rx_tlv_hdr; uint32_t rx_bufs_reaped[MAX_PDEV_CNT]; uint8_t mac_id = 0; struct dp_pdev *rx_pdev; struct dp_srng *dp_rxdma_srng; struct rx_desc_pool *rx_desc_pool; struct dp_soc *soc = int_ctx->soc; struct cdp_tid_rx_stats *tid_stats; qdf_nbuf_t nbuf_head; qdf_nbuf_t nbuf_tail; qdf_nbuf_t deliver_list_head; qdf_nbuf_t deliver_list_tail; uint32_t num_rx_bufs_reaped = 0; uint32_t intr_id; struct hif_opaque_softc *scn; int32_t tid = 0; bool is_prev_msdu_last = true; uint32_t rx_ol_pkt_cnt = 0; uint32_t num_entries = 0; struct hal_rx_msdu_metadata msdu_metadata; QDF_STATUS status; qdf_nbuf_t ebuf_head; qdf_nbuf_t ebuf_tail; uint8_t pkt_capture_offload = 0; int max_reap_limit; uint32_t old_tid; uint32_t peer_ext_stats; uint32_t dsf; uint32_t max_ast; uint64_t current_time = 0; DP_HIST_INIT(); qdf_assert_always(soc && hal_ring_hdl); hal_soc = soc->hal_soc; qdf_assert_always(hal_soc); scn = soc->hif_handle; intr_id = int_ctx->dp_intr_id; num_entries = hal_srng_get_num_entries(hal_soc, hal_ring_hdl); dp_runtime_pm_mark_last_busy(soc); more_data: /* reset local variables here to be re-used in the function */ nbuf_head = NULL; nbuf_tail = NULL; deliver_list_head = NULL; deliver_list_tail = NULL; txrx_peer = NULL; vdev = NULL; num_rx_bufs_reaped = 0; ebuf_head = NULL; ebuf_tail = NULL; max_reap_limit = dp_rx_get_loop_pkt_limit(soc); qdf_mem_zero(rx_bufs_reaped, sizeof(rx_bufs_reaped)); qdf_mem_zero(&mpdu_desc_info, sizeof(mpdu_desc_info)); qdf_mem_zero(&msdu_desc_info, sizeof(msdu_desc_info)); qdf_mem_zero(head, sizeof(head)); qdf_mem_zero(tail, sizeof(tail)); old_tid = 0xff; dsf = 0; peer_ext_stats = 0; max_ast = 0; rx_pdev = NULL; tid_stats = NULL; dp_pkt_get_timestamp(¤t_time); if (qdf_unlikely(dp_rx_srng_access_start(int_ctx, soc, hal_ring_hdl))) { /* * Need API to convert from hal_ring pointer to * Ring Type / Ring Id combo */ DP_STATS_INC(soc, rx.err.hal_ring_access_fail, 1); QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, FL("HAL RING Access Failed -- %pK"), hal_ring_hdl); goto done; } if (!num_pending) num_pending = hal_srng_dst_num_valid(hal_soc, hal_ring_hdl, 0); dp_srng_dst_inv_cached_descs(soc, hal_ring_hdl, num_pending); if (num_pending > quota) num_pending = quota; last_prefetched_hw_desc = dp_srng_dst_prefetch(hal_soc, hal_ring_hdl, num_pending); peer_ext_stats = wlan_cfg_is_peer_ext_stats_enabled(soc->wlan_cfg_ctx); max_ast = wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx); /* * start reaping the buffers from reo ring and queue * them in per vdev queue. * Process the received pkts in a different per vdev loop. */ while (qdf_likely(num_pending)) { ring_desc = dp_srng_dst_get_next(soc, hal_ring_hdl); if (qdf_unlikely(!ring_desc)) break; error = HAL_RX_ERROR_STATUS_GET(ring_desc); if (qdf_unlikely(error == HAL_REO_ERROR_DETECTED)) { dp_rx_err("%pK: HAL RING 0x%pK:error %d", soc, hal_ring_hdl, error); DP_STATS_INC(soc, rx.err.hal_reo_error[reo_ring_num], 1); /* Don't know how to deal with this -- assert */ qdf_assert(0); } dp_rx_ring_record_entry(soc, reo_ring_num, ring_desc); rx_buf_cookie = HAL_RX_REO_BUF_COOKIE_GET(ring_desc); status = dp_rx_cookie_check_and_invalidate(ring_desc); if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { DP_STATS_INC(soc, rx.err.stale_cookie, 1); break; } rx_desc = dp_rx_cookie_2_va_rxdma_buf(soc, rx_buf_cookie); status = dp_rx_desc_sanity(soc, hal_soc, hal_ring_hdl, ring_desc, rx_desc); if (QDF_IS_STATUS_ERROR(status)) { if (qdf_unlikely(rx_desc && rx_desc->nbuf)) { qdf_assert_always(!rx_desc->unmapped); dp_rx_nbuf_unmap(soc, rx_desc, reo_ring_num); rx_desc->unmapped = 1; dp_rx_buffer_pool_nbuf_free(soc, rx_desc->nbuf, rx_desc->pool_id); dp_rx_add_to_free_desc_list( &head[rx_desc->pool_id], &tail[rx_desc->pool_id], rx_desc); } continue; } /* * this is a unlikely scenario where the host is reaping * a descriptor which it already reaped just a while ago * but is yet to replenish it back to HW. * In this case host will dump the last 128 descriptors * including the software descriptor rx_desc and assert. */ if (qdf_unlikely(!rx_desc->in_use)) { DP_STATS_INC(soc, rx.err.hal_reo_dest_dup, 1); dp_info_rl("Reaping rx_desc not in use!"); dp_rx_dump_info_and_assert(soc, hal_ring_hdl, ring_desc, rx_desc); /* ignore duplicate RX desc and continue to process */ /* Pop out the descriptor */ continue; } status = dp_rx_desc_nbuf_sanity_check(soc, ring_desc, rx_desc); if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { DP_STATS_INC(soc, rx.err.nbuf_sanity_fail, 1); dp_info_rl("Nbuf sanity check failure!"); dp_rx_dump_info_and_assert(soc, hal_ring_hdl, ring_desc, rx_desc); rx_desc->in_err_state = 1; continue; } if (qdf_unlikely(!dp_rx_desc_check_magic(rx_desc))) { dp_err("Invalid rx_desc cookie=%d", rx_buf_cookie); DP_STATS_INC(soc, rx.err.rx_desc_invalid_magic, 1); dp_rx_dump_info_and_assert(soc, hal_ring_hdl, ring_desc, rx_desc); } /* Get MPDU DESC info */ hal_rx_mpdu_desc_info_get_li(ring_desc, &mpdu_desc_info); /* Get MSDU DESC info */ hal_rx_msdu_desc_info_get_li(ring_desc, &msdu_desc_info); if (qdf_unlikely(msdu_desc_info.msdu_flags & HAL_MSDU_F_MSDU_CONTINUATION)) { /* previous msdu has end bit set, so current one is * the new MPDU */ if (is_prev_msdu_last) { /* For new MPDU check if we can read complete * MPDU by comparing the number of buffers * available and number of buffers needed to * reap this MPDU */ if ((msdu_desc_info.msdu_len / (RX_DATA_BUFFER_SIZE - soc->rx_pkt_tlv_size) + 1) > num_pending) { DP_STATS_INC(soc, rx.msdu_scatter_wait_break, 1); dp_rx_cookie_reset_invalid_bit( ring_desc); /* As we are going to break out of the * loop because of unavailability of * descs to form complete SG, we need to * reset the TP in the REO destination * ring. */ hal_srng_dst_dec_tp(hal_soc, hal_ring_hdl); break; } is_prev_msdu_last = false; } } if (mpdu_desc_info.mpdu_flags & HAL_MPDU_F_RETRY_BIT) qdf_nbuf_set_rx_retry_flag(rx_desc->nbuf, 1); if (qdf_unlikely(mpdu_desc_info.mpdu_flags & HAL_MPDU_F_RAW_AMPDU)) qdf_nbuf_set_raw_frame(rx_desc->nbuf, 1); if (!is_prev_msdu_last && msdu_desc_info.msdu_flags & HAL_MSDU_F_LAST_MSDU_IN_MPDU) is_prev_msdu_last = true; rx_bufs_reaped[rx_desc->pool_id]++; peer_mdata = mpdu_desc_info.peer_meta_data; QDF_NBUF_CB_RX_PEER_ID(rx_desc->nbuf) = dp_rx_peer_metadata_peer_id_get_li(soc, peer_mdata); QDF_NBUF_CB_RX_VDEV_ID(rx_desc->nbuf) = DP_PEER_METADATA_VDEV_ID_GET_LI(peer_mdata); /* to indicate whether this msdu is rx offload */ pkt_capture_offload = DP_PEER_METADATA_OFFLOAD_GET_LI(peer_mdata); /* * save msdu flags first, last and continuation msdu in * nbuf->cb, also save mcbc, is_da_valid, is_sa_valid and * length to nbuf->cb. This ensures the info required for * per pkt processing is always in the same cache line. * This helps in improving throughput for smaller pkt * sizes. */ if (msdu_desc_info.msdu_flags & HAL_MSDU_F_FIRST_MSDU_IN_MPDU) qdf_nbuf_set_rx_chfrag_start(rx_desc->nbuf, 1); if (msdu_desc_info.msdu_flags & HAL_MSDU_F_MSDU_CONTINUATION) qdf_nbuf_set_rx_chfrag_cont(rx_desc->nbuf, 1); if (msdu_desc_info.msdu_flags & HAL_MSDU_F_LAST_MSDU_IN_MPDU) qdf_nbuf_set_rx_chfrag_end(rx_desc->nbuf, 1); if (msdu_desc_info.msdu_flags & HAL_MSDU_F_DA_IS_MCBC) qdf_nbuf_set_da_mcbc(rx_desc->nbuf, 1); if (msdu_desc_info.msdu_flags & HAL_MSDU_F_DA_IS_VALID) qdf_nbuf_set_da_valid(rx_desc->nbuf, 1); if (msdu_desc_info.msdu_flags & HAL_MSDU_F_SA_IS_VALID) qdf_nbuf_set_sa_valid(rx_desc->nbuf, 1); qdf_nbuf_set_tid_val(rx_desc->nbuf, HAL_RX_REO_QUEUE_NUMBER_GET(ring_desc)); /* set reo dest indication */ qdf_nbuf_set_rx_reo_dest_ind_or_sw_excpt( rx_desc->nbuf, HAL_RX_REO_MSDU_REO_DST_IND_GET(ring_desc)); QDF_NBUF_CB_RX_PKT_LEN(rx_desc->nbuf) = msdu_desc_info.msdu_len; QDF_NBUF_CB_RX_CTX_ID(rx_desc->nbuf) = reo_ring_num; /* * move unmap after scattered msdu waiting break logic * in case double skb unmap happened. */ dp_rx_nbuf_unmap(soc, rx_desc, reo_ring_num); rx_desc->unmapped = 1; DP_RX_PROCESS_NBUF(soc, nbuf_head, nbuf_tail, ebuf_head, ebuf_tail, rx_desc); quota -= 1; num_pending -= 1; dp_rx_add_to_free_desc_list(&head[rx_desc->pool_id], &tail[rx_desc->pool_id], rx_desc); num_rx_bufs_reaped++; dp_rx_prefetch_hw_sw_nbuf_desc(soc, hal_soc, num_pending, hal_ring_hdl, &last_prefetched_hw_desc, &last_prefetched_sw_desc); /* * only if complete msdu is received for scatter case, * then allow break. */ if (is_prev_msdu_last && dp_rx_reap_loop_pkt_limit_hit(soc, num_rx_bufs_reaped, max_reap_limit)) break; } done: dp_rx_srng_access_end(int_ctx, soc, hal_ring_hdl); dp_rx_per_core_stats_update(soc, reo_ring_num, num_rx_bufs_reaped); for (mac_id = 0; mac_id < MAX_PDEV_CNT; mac_id++) { /* * continue with next mac_id if no pkts were reaped * from that pool */ if (!rx_bufs_reaped[mac_id]) continue; dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_id]; rx_desc_pool = &soc->rx_desc_buf[mac_id]; dp_rx_buffers_replenish_simple(soc, mac_id, dp_rxdma_srng, rx_desc_pool, rx_bufs_reaped[mac_id], &head[mac_id], &tail[mac_id]); } dp_verbose_debug("replenished %u\n", rx_bufs_reaped[0]); /* Peer can be NULL is case of LFR */ if (qdf_likely(txrx_peer)) vdev = NULL; /* * BIG loop where each nbuf is dequeued from global queue, * processed and queued back on a per vdev basis. These nbufs * are sent to stack as and when we run out of nbufs * or a new nbuf dequeued from global queue has a different * vdev when compared to previous nbuf. */ nbuf = nbuf_head; while (nbuf) { next = nbuf->next; dp_rx_prefetch_nbuf_data(nbuf, next); if (qdf_unlikely(dp_rx_is_raw_frame_dropped(nbuf))) { nbuf = next; DP_STATS_INC(soc, rx.err.raw_frm_drop, 1); continue; } rx_tlv_hdr = qdf_nbuf_data(nbuf); vdev_id = QDF_NBUF_CB_RX_VDEV_ID(nbuf); peer_id = QDF_NBUF_CB_RX_PEER_ID(nbuf); if (dp_rx_is_list_ready(deliver_list_head, vdev, txrx_peer, peer_id, vdev_id)) { dp_rx_deliver_to_stack(soc, vdev, txrx_peer, deliver_list_head, deliver_list_tail); deliver_list_head = NULL; deliver_list_tail = NULL; } /* Get TID from struct cb->tid_val, save to tid */ if (qdf_nbuf_is_rx_chfrag_start(nbuf)) { tid = qdf_nbuf_get_tid_val(nbuf); if (tid >= CDP_MAX_DATA_TIDS) { DP_STATS_INC(soc, rx.err.rx_invalid_tid_err, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } } if (qdf_unlikely(!txrx_peer)) { txrx_peer = dp_rx_get_txrx_peer_and_vdev(soc, nbuf, peer_id, &txrx_ref_handle, pkt_capture_offload, &vdev, &rx_pdev, &dsf, &old_tid); if (qdf_unlikely(!txrx_peer) || qdf_unlikely(!vdev)) { nbuf = next; continue; } } else if (txrx_peer && txrx_peer->peer_id != peer_id) { dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX); txrx_peer = dp_rx_get_txrx_peer_and_vdev(soc, nbuf, peer_id, &txrx_ref_handle, pkt_capture_offload, &vdev, &rx_pdev, &dsf, &old_tid); if (qdf_unlikely(!txrx_peer) || qdf_unlikely(!vdev)) { nbuf = next; continue; } } if (txrx_peer) { QDF_NBUF_CB_DP_TRACE_PRINT(nbuf) = false; qdf_dp_trace_set_track(nbuf, QDF_RX); QDF_NBUF_CB_RX_DP_TRACE(nbuf) = 1; QDF_NBUF_CB_RX_PACKET_TRACK(nbuf) = QDF_NBUF_RX_PKT_DATA_TRACK; } rx_bufs_used++; /* when hlos tid override is enabled, save tid in * skb->priority */ if (qdf_unlikely(vdev->skip_sw_tid_classification & DP_TXRX_HLOS_TID_OVERRIDE_ENABLED)) qdf_nbuf_set_priority(nbuf, tid); DP_RX_TID_SAVE(nbuf, tid); if (qdf_unlikely(dsf) || qdf_unlikely(peer_ext_stats) || dp_rx_pkt_tracepoints_enabled()) qdf_nbuf_set_timestamp(nbuf); if (qdf_likely(old_tid != tid)) { tid_stats = &rx_pdev->stats.tid_stats.tid_rx_stats[reo_ring_num][tid]; old_tid = tid; } /* * Check if DMA completed -- msdu_done is the last bit * to be written */ if (qdf_likely(!qdf_nbuf_is_rx_chfrag_cont(nbuf))) { if (qdf_unlikely(!hal_rx_attn_msdu_done_get_li( rx_tlv_hdr))) { dp_err_rl("MSDU DONE failure"); DP_STATS_INC(soc, rx.err.msdu_done_fail, 1); hal_rx_dump_pkt_tlvs(hal_soc, rx_tlv_hdr, QDF_TRACE_LEVEL_INFO); tid_stats->fail_cnt[MSDU_DONE_FAILURE]++; qdf_assert(0); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } else if (qdf_unlikely(hal_rx_attn_msdu_len_err_get_li( rx_tlv_hdr))) { DP_STATS_INC(soc, rx.err.msdu_len_err, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } } DP_HIST_PACKET_COUNT_INC(vdev->pdev->pdev_id); /* * First IF condition: * 802.11 Fragmented pkts are reinjected to REO * HW block as SG pkts and for these pkts we only * need to pull the RX TLVS header length. * Second IF condition: * The below condition happens when an MSDU is spread * across multiple buffers. This can happen in two cases * 1. The nbuf size is smaller then the received msdu. * ex: we have set the nbuf size to 2048 during * nbuf_alloc. but we received an msdu which is * 2304 bytes in size then this msdu is spread * across 2 nbufs. * * 2. AMSDUs when RAW mode is enabled. * ex: 1st MSDU is in 1st nbuf and 2nd MSDU is spread * across 1st nbuf and 2nd nbuf and last MSDU is * spread across 2nd nbuf and 3rd nbuf. * * for these scenarios let us create a skb frag_list and * append these buffers till the last MSDU of the AMSDU * Third condition: * This is the most likely case, we receive 802.3 pkts * decapsulated by HW, here we need to set the pkt length. */ hal_rx_msdu_metadata_get(hal_soc, rx_tlv_hdr, &msdu_metadata); if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) { bool is_mcbc, is_sa_vld, is_da_vld; is_mcbc = hal_rx_msdu_end_da_is_mcbc_get(soc->hal_soc, rx_tlv_hdr); is_sa_vld = hal_rx_msdu_end_sa_is_valid_get(soc->hal_soc, rx_tlv_hdr); is_da_vld = hal_rx_msdu_end_da_is_valid_get(soc->hal_soc, rx_tlv_hdr); qdf_nbuf_set_da_mcbc(nbuf, is_mcbc); qdf_nbuf_set_da_valid(nbuf, is_da_vld); qdf_nbuf_set_sa_valid(nbuf, is_sa_vld); qdf_nbuf_pull_head(nbuf, soc->rx_pkt_tlv_size); } else if (qdf_nbuf_is_rx_chfrag_cont(nbuf)) { msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); nbuf = dp_rx_sg_create(soc, nbuf); next = nbuf->next; if (qdf_nbuf_is_raw_frame(nbuf)) { DP_STATS_INC(vdev->pdev, rx_raw_pkts, 1); DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.raw, 1, msdu_len); } else { dp_rx_nbuf_free(nbuf); DP_STATS_INC(soc, rx.err.scatter_msdu, 1); dp_info_rl("scatter msdu len %d, dropped", msdu_len); nbuf = next; continue; } } else { msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf); pkt_len = msdu_len + msdu_metadata.l3_hdr_pad + soc->rx_pkt_tlv_size; qdf_nbuf_set_pktlen(nbuf, pkt_len); dp_rx_skip_tlvs(soc, nbuf, msdu_metadata.l3_hdr_pad); } /* * process frame for mulitpass phrase processing */ if (qdf_unlikely(vdev->multipass_en)) { if (dp_rx_multipass_process(txrx_peer, nbuf, tid) == false) { DP_PEER_PER_PKT_STATS_INC(txrx_peer, rx.multipass_rx_pkt_drop, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } } if (!dp_wds_rx_policy_check(rx_tlv_hdr, vdev, txrx_peer)) { dp_rx_err("%pK: Policy Check Drop pkt", soc); DP_PEER_PER_PKT_STATS_INC(txrx_peer, rx.policy_check_drop, 1); tid_stats->fail_cnt[POLICY_CHECK_DROP]++; /* Drop & free packet */ dp_rx_nbuf_free(nbuf); /* Statistics */ nbuf = next; continue; } if (qdf_unlikely(txrx_peer && (txrx_peer->nawds_enabled) && (qdf_nbuf_is_da_mcbc(nbuf)) && (hal_rx_get_mpdu_mac_ad4_valid(soc->hal_soc, rx_tlv_hdr) == false))) { tid_stats->fail_cnt[NAWDS_MCAST_DROP]++; DP_PEER_PER_PKT_STATS_INC(txrx_peer, rx.nawds_mcast_drop, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } /* * Drop non-EAPOL frames from unauthorized peer. */ if (qdf_likely(txrx_peer) && qdf_unlikely(!txrx_peer->authorize) && !qdf_nbuf_is_raw_frame(nbuf)) { bool is_eapol = qdf_nbuf_is_ipv4_eapol_pkt(nbuf) || qdf_nbuf_is_ipv4_wapi_pkt(nbuf); if (!is_eapol) { DP_PEER_PER_PKT_STATS_INC(txrx_peer, rx.peer_unauth_rx_pkt_drop, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } } if (soc->process_rx_status) dp_rx_cksum_offload(vdev->pdev, nbuf, rx_tlv_hdr); /* Update the protocol tag in SKB based on CCE metadata */ dp_rx_update_protocol_tag(soc, vdev, nbuf, rx_tlv_hdr, reo_ring_num, false, true); /* Update the flow tag in SKB based on FSE metadata */ dp_rx_update_flow_tag(soc, vdev, nbuf, rx_tlv_hdr, true); dp_rx_msdu_stats_update(soc, nbuf, rx_tlv_hdr, txrx_peer, reo_ring_num, tid_stats); if (qdf_unlikely(vdev->mesh_vdev)) { if (dp_rx_filter_mesh_packets(vdev, nbuf, rx_tlv_hdr) == QDF_STATUS_SUCCESS) { dp_rx_info("%pK: mesh pkt filtered", soc); tid_stats->fail_cnt[MESH_FILTER_DROP]++; DP_STATS_INC(vdev->pdev, dropped.mesh_filter, 1); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } dp_rx_fill_mesh_stats(vdev, nbuf, rx_tlv_hdr, txrx_peer); } if (qdf_likely(vdev->rx_decap_type == htt_cmn_pkt_type_ethernet) && qdf_likely(!vdev->mesh_vdev)) { /* Due to HW issue, sometimes we see that the sa_idx * and da_idx are invalid with sa_valid and da_valid * bits set * * in this case we also see that value of * sa_sw_peer_id is set as 0 * * Drop the packet if sa_idx and da_idx OOB or * sa_sw_peerid is 0 */ if (!is_sa_da_idx_valid(max_ast, nbuf, msdu_metadata)) { dp_rx_nbuf_free(nbuf); nbuf = next; DP_STATS_INC(soc, rx.err.invalid_sa_da_idx, 1); continue; } if (qdf_unlikely(dp_rx_mec_check_wrapper(soc, txrx_peer, rx_tlv_hdr, nbuf))) { /* this is a looped back MCBC pkt,drop it */ DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.mec_drop, 1, QDF_NBUF_CB_RX_PKT_LEN(nbuf)); dp_rx_nbuf_free(nbuf); nbuf = next; continue; } /* WDS Source Port Learning */ if (qdf_likely(vdev->wds_enabled)) dp_rx_wds_srcport_learn(soc, rx_tlv_hdr, txrx_peer, nbuf, msdu_metadata); /* Intrabss-fwd */ if (dp_rx_check_ap_bridge(vdev)) if (dp_rx_intrabss_fwd_li(soc, txrx_peer, rx_tlv_hdr, nbuf, msdu_metadata, tid_stats)) { nbuf = next; tid_stats->intrabss_cnt++; continue; /* Get next desc */ } } dp_rx_fill_gro_info(soc, rx_tlv_hdr, nbuf, &rx_ol_pkt_cnt); dp_rx_mark_first_packet_after_wow_wakeup(vdev->pdev, rx_tlv_hdr, nbuf); dp_rx_update_stats(soc, nbuf); dp_pkt_add_timestamp(txrx_peer->vdev, QDF_PKT_RX_DRIVER_ENTRY, current_time, nbuf); DP_RX_LIST_APPEND(deliver_list_head, deliver_list_tail, nbuf); DP_PEER_STATS_FLAT_INC_PKT(txrx_peer, to_stack, 1, QDF_NBUF_CB_RX_PKT_LEN(nbuf)); if (qdf_unlikely(txrx_peer->in_twt)) DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.to_stack_twt, 1, QDF_NBUF_CB_RX_PKT_LEN(nbuf)); tid_stats->delivered_to_stack++; nbuf = next; } if (qdf_likely(deliver_list_head)) { if (qdf_likely(txrx_peer)) { dp_rx_deliver_to_pkt_capture(soc, vdev->pdev, peer_id, pkt_capture_offload, deliver_list_head); if (!pkt_capture_offload) dp_rx_deliver_to_stack(soc, vdev, txrx_peer, deliver_list_head, deliver_list_tail); } else { nbuf = deliver_list_head; while (nbuf) { next = nbuf->next; nbuf->next = NULL; dp_rx_deliver_to_stack_no_peer(soc, nbuf); nbuf = next; } } } if (qdf_likely(txrx_peer)) dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX); if (dp_rx_enable_eol_data_check(soc) && rx_bufs_used) { if (quota) { num_pending = dp_rx_srng_get_num_pending(hal_soc, hal_ring_hdl, num_entries, &near_full); if (num_pending) { DP_STATS_INC(soc, rx.hp_oos2, 1); if (!hif_exec_should_yield(scn, intr_id)) goto more_data; if (qdf_unlikely(near_full)) { DP_STATS_INC(soc, rx.near_full, 1); goto more_data; } } } if (vdev && vdev->osif_fisa_flush) vdev->osif_fisa_flush(soc, reo_ring_num); if (vdev && vdev->osif_gro_flush && rx_ol_pkt_cnt) { vdev->osif_gro_flush(vdev->osif_vdev, reo_ring_num); } } /* Update histogram statistics by looping through pdev's */ DP_RX_HIST_STATS_PER_PDEV(); return rx_bufs_used; /* Assume no scale factor for now */ } QDF_STATUS dp_rx_desc_pool_init_li(struct dp_soc *soc, struct rx_desc_pool *rx_desc_pool, uint32_t pool_id) { return dp_rx_desc_pool_init_generic(soc, rx_desc_pool, pool_id); } void dp_rx_desc_pool_deinit_li(struct dp_soc *soc, struct rx_desc_pool *rx_desc_pool, uint32_t pool_id) { } QDF_STATUS dp_wbm_get_rx_desc_from_hal_desc_li( struct dp_soc *soc, void *ring_desc, struct dp_rx_desc **r_rx_desc) { struct hal_buf_info buf_info = {0}; hal_soc_handle_t hal_soc = soc->hal_soc; /* only cookie and rbm will be valid in buf_info */ hal_rx_buf_cookie_rbm_get(hal_soc, (uint32_t *)ring_desc, &buf_info); if (qdf_unlikely(buf_info.rbm != HAL_RX_BUF_RBM_SW3_BM(soc->wbm_sw0_bm_id))) { /* TODO */ /* Call appropriate handler */ DP_STATS_INC(soc, rx.err.invalid_rbm, 1); dp_rx_err("%pK: Invalid RBM %d", soc, buf_info.rbm); return QDF_STATUS_E_INVAL; } *r_rx_desc = dp_rx_cookie_2_va_rxdma_buf(soc, buf_info.sw_cookie); return QDF_STATUS_SUCCESS; }