15e3dd157SKalle Valo /* 25e3dd157SKalle Valo * Copyright (c) 2005-2011 Atheros Communications Inc. 35e3dd157SKalle Valo * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. 45e3dd157SKalle Valo * 55e3dd157SKalle Valo * Permission to use, copy, modify, and/or distribute this software for any 65e3dd157SKalle Valo * purpose with or without fee is hereby granted, provided that the above 75e3dd157SKalle Valo * copyright notice and this permission notice appear in all copies. 85e3dd157SKalle Valo * 95e3dd157SKalle Valo * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 105e3dd157SKalle Valo * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 115e3dd157SKalle Valo * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 125e3dd157SKalle Valo * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 135e3dd157SKalle Valo * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 145e3dd157SKalle Valo * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 155e3dd157SKalle Valo * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 165e3dd157SKalle Valo */ 175e3dd157SKalle Valo 18edb8236dSMichal Kazior #include "core.h" 195e3dd157SKalle Valo #include "htc.h" 205e3dd157SKalle Valo #include "htt.h" 215e3dd157SKalle Valo #include "txrx.h" 225e3dd157SKalle Valo #include "debug.h" 23a9bf0506SKalle Valo #include "trace.h" 24aa5b4fbcSMichal Kazior #include "mac.h" 255e3dd157SKalle Valo 265e3dd157SKalle Valo #include <linux/log2.h> 275e3dd157SKalle Valo 28c545070eSMichal Kazior #define HTT_RX_RING_SIZE HTT_RX_RING_SIZE_MAX 29c545070eSMichal Kazior #define HTT_RX_RING_FILL_LEVEL (((HTT_RX_RING_SIZE) / 2) - 1) 305e3dd157SKalle Valo 315e3dd157SKalle Valo /* when under memory pressure rx ring refill may fail and needs a retry */ 325e3dd157SKalle Valo #define HTT_RX_RING_REFILL_RETRY_MS 50 335e3dd157SKalle Valo 345c86d97bSRajkumar Manoharan #define HTT_RX_RING_REFILL_RESCHED_MS 5 355c86d97bSRajkumar Manoharan 36f6dc2095SMichal Kazior static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb); 37f6dc2095SMichal Kazior 38c545070eSMichal Kazior static struct sk_buff * 39c545070eSMichal Kazior ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u32 paddr) 40c545070eSMichal Kazior { 41c545070eSMichal Kazior struct ath10k_skb_rxcb *rxcb; 42c545070eSMichal Kazior 43c545070eSMichal Kazior hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr) 44c545070eSMichal Kazior if (rxcb->paddr == paddr) 45c545070eSMichal Kazior return ATH10K_RXCB_SKB(rxcb); 46c545070eSMichal Kazior 47c545070eSMichal Kazior WARN_ON_ONCE(1); 48c545070eSMichal Kazior return NULL; 49c545070eSMichal Kazior } 50c545070eSMichal Kazior 515e3dd157SKalle Valo static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt) 525e3dd157SKalle Valo { 535e3dd157SKalle Valo struct sk_buff *skb; 54c545070eSMichal Kazior struct ath10k_skb_rxcb *rxcb; 55c545070eSMichal Kazior struct hlist_node *n; 565e3dd157SKalle Valo int i; 575e3dd157SKalle Valo 58c545070eSMichal Kazior if (htt->rx_ring.in_ord_rx) { 59c545070eSMichal Kazior hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) { 60c545070eSMichal Kazior skb = ATH10K_RXCB_SKB(rxcb); 61c545070eSMichal Kazior dma_unmap_single(htt->ar->dev, rxcb->paddr, 62c545070eSMichal Kazior skb->len + skb_tailroom(skb), 63c545070eSMichal Kazior DMA_FROM_DEVICE); 64c545070eSMichal Kazior hash_del(&rxcb->hlist); 65c545070eSMichal Kazior dev_kfree_skb_any(skb); 66c545070eSMichal Kazior } 67c545070eSMichal Kazior } else { 68c545070eSMichal Kazior for (i = 0; i < htt->rx_ring.size; i++) { 695e3dd157SKalle Valo skb = htt->rx_ring.netbufs_ring[i]; 70c545070eSMichal Kazior if (!skb) 71c545070eSMichal Kazior continue; 72c545070eSMichal Kazior 73c545070eSMichal Kazior rxcb = ATH10K_SKB_RXCB(skb); 74c545070eSMichal Kazior dma_unmap_single(htt->ar->dev, rxcb->paddr, 755e3dd157SKalle Valo skb->len + skb_tailroom(skb), 765e3dd157SKalle Valo DMA_FROM_DEVICE); 775e3dd157SKalle Valo dev_kfree_skb_any(skb); 785e3dd157SKalle Valo } 79c545070eSMichal Kazior } 805e3dd157SKalle Valo 815e3dd157SKalle Valo htt->rx_ring.fill_cnt = 0; 82c545070eSMichal Kazior hash_init(htt->rx_ring.skb_table); 83c545070eSMichal Kazior memset(htt->rx_ring.netbufs_ring, 0, 84c545070eSMichal Kazior htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0])); 855e3dd157SKalle Valo } 865e3dd157SKalle Valo 875e3dd157SKalle Valo static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 885e3dd157SKalle Valo { 895e3dd157SKalle Valo struct htt_rx_desc *rx_desc; 90c545070eSMichal Kazior struct ath10k_skb_rxcb *rxcb; 915e3dd157SKalle Valo struct sk_buff *skb; 925e3dd157SKalle Valo dma_addr_t paddr; 935e3dd157SKalle Valo int ret = 0, idx; 945e3dd157SKalle Valo 95c545070eSMichal Kazior /* The Full Rx Reorder firmware has no way of telling the host 96c545070eSMichal Kazior * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring. 97c545070eSMichal Kazior * To keep things simple make sure ring is always half empty. This 98c545070eSMichal Kazior * guarantees there'll be no replenishment overruns possible. 99c545070eSMichal Kazior */ 100c545070eSMichal Kazior BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2); 101c545070eSMichal Kazior 1028cc7f26cSKalle Valo idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); 1035e3dd157SKalle Valo while (num > 0) { 1045e3dd157SKalle Valo skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN); 1055e3dd157SKalle Valo if (!skb) { 1065e3dd157SKalle Valo ret = -ENOMEM; 1075e3dd157SKalle Valo goto fail; 1085e3dd157SKalle Valo } 1095e3dd157SKalle Valo 1105e3dd157SKalle Valo if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN)) 1115e3dd157SKalle Valo skb_pull(skb, 1125e3dd157SKalle Valo PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) - 1135e3dd157SKalle Valo skb->data); 1145e3dd157SKalle Valo 1155e3dd157SKalle Valo /* Clear rx_desc attention word before posting to Rx ring */ 1165e3dd157SKalle Valo rx_desc = (struct htt_rx_desc *)skb->data; 1175e3dd157SKalle Valo rx_desc->attention.flags = __cpu_to_le32(0); 1185e3dd157SKalle Valo 1195e3dd157SKalle Valo paddr = dma_map_single(htt->ar->dev, skb->data, 1205e3dd157SKalle Valo skb->len + skb_tailroom(skb), 1215e3dd157SKalle Valo DMA_FROM_DEVICE); 1225e3dd157SKalle Valo 1235e3dd157SKalle Valo if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) { 1245e3dd157SKalle Valo dev_kfree_skb_any(skb); 1255e3dd157SKalle Valo ret = -ENOMEM; 1265e3dd157SKalle Valo goto fail; 1275e3dd157SKalle Valo } 1285e3dd157SKalle Valo 129c545070eSMichal Kazior rxcb = ATH10K_SKB_RXCB(skb); 130c545070eSMichal Kazior rxcb->paddr = paddr; 1315e3dd157SKalle Valo htt->rx_ring.netbufs_ring[idx] = skb; 1325e3dd157SKalle Valo htt->rx_ring.paddrs_ring[idx] = __cpu_to_le32(paddr); 1335e3dd157SKalle Valo htt->rx_ring.fill_cnt++; 1345e3dd157SKalle Valo 135c545070eSMichal Kazior if (htt->rx_ring.in_ord_rx) { 136c545070eSMichal Kazior hash_add(htt->rx_ring.skb_table, 137c545070eSMichal Kazior &ATH10K_SKB_RXCB(skb)->hlist, 138c545070eSMichal Kazior (u32)paddr); 139c545070eSMichal Kazior } 140c545070eSMichal Kazior 1415e3dd157SKalle Valo num--; 1425e3dd157SKalle Valo idx++; 1435e3dd157SKalle Valo idx &= htt->rx_ring.size_mask; 1445e3dd157SKalle Valo } 1455e3dd157SKalle Valo 1465e3dd157SKalle Valo fail: 1475de6dfc8SVasanthakumar Thiagarajan /* 1485de6dfc8SVasanthakumar Thiagarajan * Make sure the rx buffer is updated before available buffer 1495de6dfc8SVasanthakumar Thiagarajan * index to avoid any potential rx ring corruption. 1505de6dfc8SVasanthakumar Thiagarajan */ 1515de6dfc8SVasanthakumar Thiagarajan mb(); 1528cc7f26cSKalle Valo *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx); 1535e3dd157SKalle Valo return ret; 1545e3dd157SKalle Valo } 1555e3dd157SKalle Valo 1565e3dd157SKalle Valo static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) 1575e3dd157SKalle Valo { 1585e3dd157SKalle Valo lockdep_assert_held(&htt->rx_ring.lock); 1595e3dd157SKalle Valo return __ath10k_htt_rx_ring_fill_n(htt, num); 1605e3dd157SKalle Valo } 1615e3dd157SKalle Valo 1625e3dd157SKalle Valo static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt) 1635e3dd157SKalle Valo { 1646e712d42SMichal Kazior int ret, num_deficit, num_to_fill; 1655e3dd157SKalle Valo 1666e712d42SMichal Kazior /* Refilling the whole RX ring buffer proves to be a bad idea. The 1676e712d42SMichal Kazior * reason is RX may take up significant amount of CPU cycles and starve 1686e712d42SMichal Kazior * other tasks, e.g. TX on an ethernet device while acting as a bridge 1696e712d42SMichal Kazior * with ath10k wlan interface. This ended up with very poor performance 1706e712d42SMichal Kazior * once CPU the host system was overwhelmed with RX on ath10k. 1716e712d42SMichal Kazior * 1726e712d42SMichal Kazior * By limiting the number of refills the replenishing occurs 1736e712d42SMichal Kazior * progressively. This in turns makes use of the fact tasklets are 1746e712d42SMichal Kazior * processed in FIFO order. This means actual RX processing can starve 1756e712d42SMichal Kazior * out refilling. If there's not enough buffers on RX ring FW will not 1766e712d42SMichal Kazior * report RX until it is refilled with enough buffers. This 1776e712d42SMichal Kazior * automatically balances load wrt to CPU power. 1786e712d42SMichal Kazior * 1796e712d42SMichal Kazior * This probably comes at a cost of lower maximum throughput but 1803eafdfd6SBen Greear * improves the average and stability. */ 1815e3dd157SKalle Valo spin_lock_bh(&htt->rx_ring.lock); 1826e712d42SMichal Kazior num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt; 1836e712d42SMichal Kazior num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit); 1846e712d42SMichal Kazior num_deficit -= num_to_fill; 1855e3dd157SKalle Valo ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill); 1865e3dd157SKalle Valo if (ret == -ENOMEM) { 1875e3dd157SKalle Valo /* 1885e3dd157SKalle Valo * Failed to fill it to the desired level - 1895e3dd157SKalle Valo * we'll start a timer and try again next time. 1905e3dd157SKalle Valo * As long as enough buffers are left in the ring for 1915e3dd157SKalle Valo * another A-MPDU rx, no special recovery is needed. 1925e3dd157SKalle Valo */ 1935e3dd157SKalle Valo mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 1945e3dd157SKalle Valo msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS)); 1956e712d42SMichal Kazior } else if (num_deficit > 0) { 1965c86d97bSRajkumar Manoharan mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + 1975c86d97bSRajkumar Manoharan msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS)); 1985e3dd157SKalle Valo } 1995e3dd157SKalle Valo spin_unlock_bh(&htt->rx_ring.lock); 2005e3dd157SKalle Valo } 2015e3dd157SKalle Valo 2025e3dd157SKalle Valo static void ath10k_htt_rx_ring_refill_retry(unsigned long arg) 2035e3dd157SKalle Valo { 2045e3dd157SKalle Valo struct ath10k_htt *htt = (struct ath10k_htt *)arg; 205af762c0bSKalle Valo 2065e3dd157SKalle Valo ath10k_htt_rx_msdu_buff_replenish(htt); 2075e3dd157SKalle Valo } 2085e3dd157SKalle Valo 209c545070eSMichal Kazior int ath10k_htt_rx_ring_refill(struct ath10k *ar) 2103e841fd0SMichal Kazior { 211c545070eSMichal Kazior struct ath10k_htt *htt = &ar->htt; 212c545070eSMichal Kazior int ret; 2133e841fd0SMichal Kazior 214c545070eSMichal Kazior spin_lock_bh(&htt->rx_ring.lock); 215c545070eSMichal Kazior ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level - 216c545070eSMichal Kazior htt->rx_ring.fill_cnt)); 217c545070eSMichal Kazior spin_unlock_bh(&htt->rx_ring.lock); 2183e841fd0SMichal Kazior 219c545070eSMichal Kazior if (ret) 220c545070eSMichal Kazior ath10k_htt_rx_ring_free(htt); 221c545070eSMichal Kazior 222c545070eSMichal Kazior return ret; 2233e841fd0SMichal Kazior } 2243e841fd0SMichal Kazior 22595bf21f9SMichal Kazior void ath10k_htt_rx_free(struct ath10k_htt *htt) 2265e3dd157SKalle Valo { 2275e3dd157SKalle Valo del_timer_sync(&htt->rx_ring.refill_retry_timer); 2286c5151a9SMichal Kazior 2296c5151a9SMichal Kazior skb_queue_purge(&htt->rx_compl_q); 230c545070eSMichal Kazior skb_queue_purge(&htt->rx_in_ord_compl_q); 231426e10eaSMichal Kazior skb_queue_purge(&htt->tx_fetch_ind_q); 2325e3dd157SKalle Valo 233c545070eSMichal Kazior ath10k_htt_rx_ring_free(htt); 2345e3dd157SKalle Valo 2355e3dd157SKalle Valo dma_free_coherent(htt->ar->dev, 2365e3dd157SKalle Valo (htt->rx_ring.size * 2375e3dd157SKalle Valo sizeof(htt->rx_ring.paddrs_ring)), 2385e3dd157SKalle Valo htt->rx_ring.paddrs_ring, 2395e3dd157SKalle Valo htt->rx_ring.base_paddr); 2405e3dd157SKalle Valo 2415e3dd157SKalle Valo dma_free_coherent(htt->ar->dev, 2425e3dd157SKalle Valo sizeof(*htt->rx_ring.alloc_idx.vaddr), 2435e3dd157SKalle Valo htt->rx_ring.alloc_idx.vaddr, 2445e3dd157SKalle Valo htt->rx_ring.alloc_idx.paddr); 2455e3dd157SKalle Valo 2465e3dd157SKalle Valo kfree(htt->rx_ring.netbufs_ring); 2475e3dd157SKalle Valo } 2485e3dd157SKalle Valo 2495e3dd157SKalle Valo static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt) 2505e3dd157SKalle Valo { 2517aa7a72aSMichal Kazior struct ath10k *ar = htt->ar; 2525e3dd157SKalle Valo int idx; 2535e3dd157SKalle Valo struct sk_buff *msdu; 2545e3dd157SKalle Valo 25545967089SMichal Kazior lockdep_assert_held(&htt->rx_ring.lock); 2565e3dd157SKalle Valo 2578d60ee87SMichal Kazior if (htt->rx_ring.fill_cnt == 0) { 2587aa7a72aSMichal Kazior ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n"); 2598d60ee87SMichal Kazior return NULL; 2608d60ee87SMichal Kazior } 2615e3dd157SKalle Valo 2625e3dd157SKalle Valo idx = htt->rx_ring.sw_rd_idx.msdu_payld; 2635e3dd157SKalle Valo msdu = htt->rx_ring.netbufs_ring[idx]; 2643e841fd0SMichal Kazior htt->rx_ring.netbufs_ring[idx] = NULL; 265c545070eSMichal Kazior htt->rx_ring.paddrs_ring[idx] = 0; 2665e3dd157SKalle Valo 2675e3dd157SKalle Valo idx++; 2685e3dd157SKalle Valo idx &= htt->rx_ring.size_mask; 2695e3dd157SKalle Valo htt->rx_ring.sw_rd_idx.msdu_payld = idx; 2705e3dd157SKalle Valo htt->rx_ring.fill_cnt--; 2715e3dd157SKalle Valo 2724de02806SMichal Kazior dma_unmap_single(htt->ar->dev, 2738582bf3bSMichal Kazior ATH10K_SKB_RXCB(msdu)->paddr, 2744de02806SMichal Kazior msdu->len + skb_tailroom(msdu), 2754de02806SMichal Kazior DMA_FROM_DEVICE); 2764de02806SMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 2774de02806SMichal Kazior msdu->data, msdu->len + skb_tailroom(msdu)); 2784de02806SMichal Kazior 2795e3dd157SKalle Valo return msdu; 2805e3dd157SKalle Valo } 2815e3dd157SKalle Valo 282d84dd60fSJanusz Dziedzic /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */ 2835e3dd157SKalle Valo static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt, 284f0e2770fSMichal Kazior struct sk_buff_head *amsdu) 2855e3dd157SKalle Valo { 2867aa7a72aSMichal Kazior struct ath10k *ar = htt->ar; 2875e3dd157SKalle Valo int msdu_len, msdu_chaining = 0; 2889aa505d2SMichal Kazior struct sk_buff *msdu; 2895e3dd157SKalle Valo struct htt_rx_desc *rx_desc; 2905e3dd157SKalle Valo 29145967089SMichal Kazior lockdep_assert_held(&htt->rx_ring.lock); 29245967089SMichal Kazior 2939aa505d2SMichal Kazior for (;;) { 2945e3dd157SKalle Valo int last_msdu, msdu_len_invalid, msdu_chained; 2955e3dd157SKalle Valo 2969aa505d2SMichal Kazior msdu = ath10k_htt_rx_netbuf_pop(htt); 2979aa505d2SMichal Kazior if (!msdu) { 2989aa505d2SMichal Kazior __skb_queue_purge(amsdu); 299e0bd7513SMichal Kazior return -ENOENT; 3009aa505d2SMichal Kazior } 3019aa505d2SMichal Kazior 3029aa505d2SMichal Kazior __skb_queue_tail(amsdu, msdu); 3039aa505d2SMichal Kazior 3045e3dd157SKalle Valo rx_desc = (struct htt_rx_desc *)msdu->data; 3055e3dd157SKalle Valo 3065e3dd157SKalle Valo /* FIXME: we must report msdu payload since this is what caller 3075e3dd157SKalle Valo * expects now */ 3085e3dd157SKalle Valo skb_put(msdu, offsetof(struct htt_rx_desc, msdu_payload)); 3095e3dd157SKalle Valo skb_pull(msdu, offsetof(struct htt_rx_desc, msdu_payload)); 3105e3dd157SKalle Valo 3115e3dd157SKalle Valo /* 3125e3dd157SKalle Valo * Sanity check - confirm the HW is finished filling in the 3135e3dd157SKalle Valo * rx data. 3145e3dd157SKalle Valo * If the HW and SW are working correctly, then it's guaranteed 3155e3dd157SKalle Valo * that the HW's MAC DMA is done before this point in the SW. 3165e3dd157SKalle Valo * To prevent the case that we handle a stale Rx descriptor, 3175e3dd157SKalle Valo * just assert for now until we have a way to recover. 3185e3dd157SKalle Valo */ 3195e3dd157SKalle Valo if (!(__le32_to_cpu(rx_desc->attention.flags) 3205e3dd157SKalle Valo & RX_ATTENTION_FLAGS_MSDU_DONE)) { 3219aa505d2SMichal Kazior __skb_queue_purge(amsdu); 322e0bd7513SMichal Kazior return -EIO; 3235e3dd157SKalle Valo } 3245e3dd157SKalle Valo 3255e3dd157SKalle Valo msdu_len_invalid = !!(__le32_to_cpu(rx_desc->attention.flags) 3265e3dd157SKalle Valo & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR | 3275e3dd157SKalle Valo RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR)); 3281f5dbfbbSPeter Oh msdu_len = MS(__le32_to_cpu(rx_desc->msdu_start.common.info0), 3295e3dd157SKalle Valo RX_MSDU_START_INFO0_MSDU_LENGTH); 3305e3dd157SKalle Valo msdu_chained = rx_desc->frag_info.ring2_more_count; 3315e3dd157SKalle Valo 3325e3dd157SKalle Valo if (msdu_len_invalid) 3335e3dd157SKalle Valo msdu_len = 0; 3345e3dd157SKalle Valo 3355e3dd157SKalle Valo skb_trim(msdu, 0); 3365e3dd157SKalle Valo skb_put(msdu, min(msdu_len, HTT_RX_MSDU_SIZE)); 3375e3dd157SKalle Valo msdu_len -= msdu->len; 3385e3dd157SKalle Valo 3399aa505d2SMichal Kazior /* Note: Chained buffers do not contain rx descriptor */ 3405e3dd157SKalle Valo while (msdu_chained--) { 3419aa505d2SMichal Kazior msdu = ath10k_htt_rx_netbuf_pop(htt); 3429aa505d2SMichal Kazior if (!msdu) { 3439aa505d2SMichal Kazior __skb_queue_purge(amsdu); 344e0bd7513SMichal Kazior return -ENOENT; 345b30595aeSMichal Kazior } 346b30595aeSMichal Kazior 3479aa505d2SMichal Kazior __skb_queue_tail(amsdu, msdu); 3489aa505d2SMichal Kazior skb_trim(msdu, 0); 3499aa505d2SMichal Kazior skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE)); 3509aa505d2SMichal Kazior msdu_len -= msdu->len; 351ede9c8e0SMichal Kazior msdu_chaining = 1; 3525e3dd157SKalle Valo } 3535e3dd157SKalle Valo 3541f5dbfbbSPeter Oh last_msdu = __le32_to_cpu(rx_desc->msdu_end.common.info0) & 3555e3dd157SKalle Valo RX_MSDU_END_INFO0_LAST_MSDU; 3565e3dd157SKalle Valo 357b04e204fSMichal Kazior trace_ath10k_htt_rx_desc(ar, &rx_desc->attention, 358a0883cf7SRajkumar Manoharan sizeof(*rx_desc) - sizeof(u32)); 3599aa505d2SMichal Kazior 3609aa505d2SMichal Kazior if (last_msdu) 3615e3dd157SKalle Valo break; 362d8bb26b9SKalle Valo } 363d8bb26b9SKalle Valo 3649aa505d2SMichal Kazior if (skb_queue_empty(amsdu)) 365d84dd60fSJanusz Dziedzic msdu_chaining = -1; 366d84dd60fSJanusz Dziedzic 3675e3dd157SKalle Valo /* 3685e3dd157SKalle Valo * Don't refill the ring yet. 3695e3dd157SKalle Valo * 3705e3dd157SKalle Valo * First, the elements popped here are still in use - it is not 3715e3dd157SKalle Valo * safe to overwrite them until the matching call to 3725e3dd157SKalle Valo * mpdu_desc_list_next. Second, for efficiency it is preferable to 3735e3dd157SKalle Valo * refill the rx ring with 1 PPDU's worth of rx buffers (something 3745e3dd157SKalle Valo * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers 3755e3dd157SKalle Valo * (something like 3 buffers). Consequently, we'll rely on the txrx 3765e3dd157SKalle Valo * SW to tell us when it is done pulling all the PPDU's rx buffers 3775e3dd157SKalle Valo * out of the rx ring, and then refill it just once. 3785e3dd157SKalle Valo */ 3795e3dd157SKalle Valo 3805e3dd157SKalle Valo return msdu_chaining; 3815e3dd157SKalle Valo } 3825e3dd157SKalle Valo 383c545070eSMichal Kazior static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt, 384c545070eSMichal Kazior u32 paddr) 385c545070eSMichal Kazior { 386c545070eSMichal Kazior struct ath10k *ar = htt->ar; 387c545070eSMichal Kazior struct ath10k_skb_rxcb *rxcb; 388c545070eSMichal Kazior struct sk_buff *msdu; 389c545070eSMichal Kazior 390c545070eSMichal Kazior lockdep_assert_held(&htt->rx_ring.lock); 391c545070eSMichal Kazior 392c545070eSMichal Kazior msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr); 393c545070eSMichal Kazior if (!msdu) 394c545070eSMichal Kazior return NULL; 395c545070eSMichal Kazior 396c545070eSMichal Kazior rxcb = ATH10K_SKB_RXCB(msdu); 397c545070eSMichal Kazior hash_del(&rxcb->hlist); 398c545070eSMichal Kazior htt->rx_ring.fill_cnt--; 399c545070eSMichal Kazior 400c545070eSMichal Kazior dma_unmap_single(htt->ar->dev, rxcb->paddr, 401c545070eSMichal Kazior msdu->len + skb_tailroom(msdu), 402c545070eSMichal Kazior DMA_FROM_DEVICE); 403c545070eSMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", 404c545070eSMichal Kazior msdu->data, msdu->len + skb_tailroom(msdu)); 405c545070eSMichal Kazior 406c545070eSMichal Kazior return msdu; 407c545070eSMichal Kazior } 408c545070eSMichal Kazior 409c545070eSMichal Kazior static int ath10k_htt_rx_pop_paddr_list(struct ath10k_htt *htt, 410c545070eSMichal Kazior struct htt_rx_in_ord_ind *ev, 411c545070eSMichal Kazior struct sk_buff_head *list) 412c545070eSMichal Kazior { 413c545070eSMichal Kazior struct ath10k *ar = htt->ar; 414c545070eSMichal Kazior struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs; 415c545070eSMichal Kazior struct htt_rx_desc *rxd; 416c545070eSMichal Kazior struct sk_buff *msdu; 417c545070eSMichal Kazior int msdu_count; 418c545070eSMichal Kazior bool is_offload; 419c545070eSMichal Kazior u32 paddr; 420c545070eSMichal Kazior 421c545070eSMichal Kazior lockdep_assert_held(&htt->rx_ring.lock); 422c545070eSMichal Kazior 423c545070eSMichal Kazior msdu_count = __le16_to_cpu(ev->msdu_count); 424c545070eSMichal Kazior is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 425c545070eSMichal Kazior 426c545070eSMichal Kazior while (msdu_count--) { 427c545070eSMichal Kazior paddr = __le32_to_cpu(msdu_desc->msdu_paddr); 428c545070eSMichal Kazior 429c545070eSMichal Kazior msdu = ath10k_htt_rx_pop_paddr(htt, paddr); 430c545070eSMichal Kazior if (!msdu) { 431c545070eSMichal Kazior __skb_queue_purge(list); 432c545070eSMichal Kazior return -ENOENT; 433c545070eSMichal Kazior } 434c545070eSMichal Kazior 435c545070eSMichal Kazior __skb_queue_tail(list, msdu); 436c545070eSMichal Kazior 437c545070eSMichal Kazior if (!is_offload) { 438c545070eSMichal Kazior rxd = (void *)msdu->data; 439c545070eSMichal Kazior 440c545070eSMichal Kazior trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd)); 441c545070eSMichal Kazior 442c545070eSMichal Kazior skb_put(msdu, sizeof(*rxd)); 443c545070eSMichal Kazior skb_pull(msdu, sizeof(*rxd)); 444c545070eSMichal Kazior skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); 445c545070eSMichal Kazior 446c545070eSMichal Kazior if (!(__le32_to_cpu(rxd->attention.flags) & 447c545070eSMichal Kazior RX_ATTENTION_FLAGS_MSDU_DONE)) { 448c545070eSMichal Kazior ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); 449c545070eSMichal Kazior return -EIO; 450c545070eSMichal Kazior } 451c545070eSMichal Kazior } 452c545070eSMichal Kazior 453c545070eSMichal Kazior msdu_desc++; 454c545070eSMichal Kazior } 455c545070eSMichal Kazior 456c545070eSMichal Kazior return 0; 457c545070eSMichal Kazior } 458c545070eSMichal Kazior 45995bf21f9SMichal Kazior int ath10k_htt_rx_alloc(struct ath10k_htt *htt) 4605e3dd157SKalle Valo { 4617aa7a72aSMichal Kazior struct ath10k *ar = htt->ar; 4625e3dd157SKalle Valo dma_addr_t paddr; 4635e3dd157SKalle Valo void *vaddr; 464bd8bdbb6SKalle Valo size_t size; 4655e3dd157SKalle Valo struct timer_list *timer = &htt->rx_ring.refill_retry_timer; 4665e3dd157SKalle Valo 46751fc7d74SMichal Kazior htt->rx_confused = false; 46851fc7d74SMichal Kazior 469fe2407a8SMichal Kazior /* XXX: The fill level could be changed during runtime in response to 470fe2407a8SMichal Kazior * the host processing latency. Is this really worth it? 471fe2407a8SMichal Kazior */ 472fe2407a8SMichal Kazior htt->rx_ring.size = HTT_RX_RING_SIZE; 473fe2407a8SMichal Kazior htt->rx_ring.size_mask = htt->rx_ring.size - 1; 474fe2407a8SMichal Kazior htt->rx_ring.fill_level = HTT_RX_RING_FILL_LEVEL; 475fe2407a8SMichal Kazior 4765e3dd157SKalle Valo if (!is_power_of_2(htt->rx_ring.size)) { 4777aa7a72aSMichal Kazior ath10k_warn(ar, "htt rx ring size is not power of 2\n"); 4785e3dd157SKalle Valo return -EINVAL; 4795e3dd157SKalle Valo } 4805e3dd157SKalle Valo 4815e3dd157SKalle Valo htt->rx_ring.netbufs_ring = 4823e841fd0SMichal Kazior kzalloc(htt->rx_ring.size * sizeof(struct sk_buff *), 4835e3dd157SKalle Valo GFP_KERNEL); 4845e3dd157SKalle Valo if (!htt->rx_ring.netbufs_ring) 4855e3dd157SKalle Valo goto err_netbuf; 4865e3dd157SKalle Valo 487bd8bdbb6SKalle Valo size = htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring); 488bd8bdbb6SKalle Valo 489d6cb23b5SFelix Fietkau vaddr = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL); 4905e3dd157SKalle Valo if (!vaddr) 4915e3dd157SKalle Valo goto err_dma_ring; 4925e3dd157SKalle Valo 4935e3dd157SKalle Valo htt->rx_ring.paddrs_ring = vaddr; 4945e3dd157SKalle Valo htt->rx_ring.base_paddr = paddr; 4955e3dd157SKalle Valo 4965e3dd157SKalle Valo vaddr = dma_alloc_coherent(htt->ar->dev, 4975e3dd157SKalle Valo sizeof(*htt->rx_ring.alloc_idx.vaddr), 498d6cb23b5SFelix Fietkau &paddr, GFP_KERNEL); 4995e3dd157SKalle Valo if (!vaddr) 5005e3dd157SKalle Valo goto err_dma_idx; 5015e3dd157SKalle Valo 5025e3dd157SKalle Valo htt->rx_ring.alloc_idx.vaddr = vaddr; 5035e3dd157SKalle Valo htt->rx_ring.alloc_idx.paddr = paddr; 504c545070eSMichal Kazior htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask; 5055e3dd157SKalle Valo *htt->rx_ring.alloc_idx.vaddr = 0; 5065e3dd157SKalle Valo 5075e3dd157SKalle Valo /* Initialize the Rx refill retry timer */ 5085e3dd157SKalle Valo setup_timer(timer, ath10k_htt_rx_ring_refill_retry, (unsigned long)htt); 5095e3dd157SKalle Valo 5105e3dd157SKalle Valo spin_lock_init(&htt->rx_ring.lock); 5115e3dd157SKalle Valo 5125e3dd157SKalle Valo htt->rx_ring.fill_cnt = 0; 513c545070eSMichal Kazior htt->rx_ring.sw_rd_idx.msdu_payld = 0; 514c545070eSMichal Kazior hash_init(htt->rx_ring.skb_table); 5155e3dd157SKalle Valo 5166c5151a9SMichal Kazior skb_queue_head_init(&htt->rx_compl_q); 517c545070eSMichal Kazior skb_queue_head_init(&htt->rx_in_ord_compl_q); 518426e10eaSMichal Kazior skb_queue_head_init(&htt->tx_fetch_ind_q); 5193128b3d8SRajkumar Manoharan atomic_set(&htt->num_mpdus_ready, 0); 5206c5151a9SMichal Kazior 5217aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n", 5225e3dd157SKalle Valo htt->rx_ring.size, htt->rx_ring.fill_level); 5235e3dd157SKalle Valo return 0; 5245e3dd157SKalle Valo 5255e3dd157SKalle Valo err_dma_idx: 5265e3dd157SKalle Valo dma_free_coherent(htt->ar->dev, 5275e3dd157SKalle Valo (htt->rx_ring.size * 5285e3dd157SKalle Valo sizeof(htt->rx_ring.paddrs_ring)), 5295e3dd157SKalle Valo htt->rx_ring.paddrs_ring, 5305e3dd157SKalle Valo htt->rx_ring.base_paddr); 5315e3dd157SKalle Valo err_dma_ring: 5325e3dd157SKalle Valo kfree(htt->rx_ring.netbufs_ring); 5335e3dd157SKalle Valo err_netbuf: 5345e3dd157SKalle Valo return -ENOMEM; 5355e3dd157SKalle Valo } 5365e3dd157SKalle Valo 5377aa7a72aSMichal Kazior static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar, 5387aa7a72aSMichal Kazior enum htt_rx_mpdu_encrypt_type type) 5395e3dd157SKalle Valo { 5405e3dd157SKalle Valo switch (type) { 541890d3b2aSMichal Kazior case HTT_RX_MPDU_ENCRYPT_NONE: 542890d3b2aSMichal Kazior return 0; 5435e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_WEP40: 5445e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_WEP104: 545890d3b2aSMichal Kazior return IEEE80211_WEP_IV_LEN; 5465e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 5475e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 548890d3b2aSMichal Kazior return IEEE80211_TKIP_IV_LEN; 5495e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 550890d3b2aSMichal Kazior return IEEE80211_CCMP_HDR_LEN; 551890d3b2aSMichal Kazior case HTT_RX_MPDU_ENCRYPT_WEP128: 552890d3b2aSMichal Kazior case HTT_RX_MPDU_ENCRYPT_WAPI: 553890d3b2aSMichal Kazior break; 554890d3b2aSMichal Kazior } 555890d3b2aSMichal Kazior 556890d3b2aSMichal Kazior ath10k_warn(ar, "unsupported encryption type %d\n", type); 5575e3dd157SKalle Valo return 0; 5585e3dd157SKalle Valo } 5595e3dd157SKalle Valo 560890d3b2aSMichal Kazior #define MICHAEL_MIC_LEN 8 5615e3dd157SKalle Valo 5627aa7a72aSMichal Kazior static int ath10k_htt_rx_crypto_tail_len(struct ath10k *ar, 5637aa7a72aSMichal Kazior enum htt_rx_mpdu_encrypt_type type) 5645e3dd157SKalle Valo { 5655e3dd157SKalle Valo switch (type) { 5665e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_NONE: 567890d3b2aSMichal Kazior return 0; 5685e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_WEP40: 5695e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_WEP104: 570890d3b2aSMichal Kazior return IEEE80211_WEP_ICV_LEN; 5715e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: 5725e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: 573890d3b2aSMichal Kazior return IEEE80211_TKIP_ICV_LEN; 5745e3dd157SKalle Valo case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: 575890d3b2aSMichal Kazior return IEEE80211_CCMP_MIC_LEN; 576890d3b2aSMichal Kazior case HTT_RX_MPDU_ENCRYPT_WEP128: 577890d3b2aSMichal Kazior case HTT_RX_MPDU_ENCRYPT_WAPI: 578890d3b2aSMichal Kazior break; 5795e3dd157SKalle Valo } 5805e3dd157SKalle Valo 581890d3b2aSMichal Kazior ath10k_warn(ar, "unsupported encryption type %d\n", type); 5825e3dd157SKalle Valo return 0; 5835e3dd157SKalle Valo } 5845e3dd157SKalle Valo 585f6dc2095SMichal Kazior struct amsdu_subframe_hdr { 586f6dc2095SMichal Kazior u8 dst[ETH_ALEN]; 587f6dc2095SMichal Kazior u8 src[ETH_ALEN]; 588f6dc2095SMichal Kazior __be16 len; 589f6dc2095SMichal Kazior } __packed; 590f6dc2095SMichal Kazior 5916986fdd6SMichal Kazior #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63) 5926986fdd6SMichal Kazior 59387326c97SJanusz Dziedzic static void ath10k_htt_rx_h_rates(struct ath10k *ar, 594b9fd8a84SMichal Kazior struct ieee80211_rx_status *status, 595b9fd8a84SMichal Kazior struct htt_rx_desc *rxd) 59673539b40SJanusz Dziedzic { 5975528e032SMichal Kazior struct ieee80211_supported_band *sband; 5985528e032SMichal Kazior u8 cck, rate, bw, sgi, mcs, nss; 59973539b40SJanusz Dziedzic u8 preamble = 0; 6006986fdd6SMichal Kazior u8 group_id; 601b9fd8a84SMichal Kazior u32 info1, info2, info3; 60273539b40SJanusz Dziedzic 603b9fd8a84SMichal Kazior info1 = __le32_to_cpu(rxd->ppdu_start.info1); 604b9fd8a84SMichal Kazior info2 = __le32_to_cpu(rxd->ppdu_start.info2); 605b9fd8a84SMichal Kazior info3 = __le32_to_cpu(rxd->ppdu_start.info3); 606b9fd8a84SMichal Kazior 607b9fd8a84SMichal Kazior preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE); 60873539b40SJanusz Dziedzic 60973539b40SJanusz Dziedzic switch (preamble) { 61073539b40SJanusz Dziedzic case HTT_RX_LEGACY: 6115528e032SMichal Kazior /* To get legacy rate index band is required. Since band can't 6125528e032SMichal Kazior * be undefined check if freq is non-zero. 6135528e032SMichal Kazior */ 6145528e032SMichal Kazior if (!status->freq) 6155528e032SMichal Kazior return; 6165528e032SMichal Kazior 617b9fd8a84SMichal Kazior cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT; 618b9fd8a84SMichal Kazior rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE); 6195528e032SMichal Kazior rate &= ~RX_PPDU_START_RATE_FLAG; 62073539b40SJanusz Dziedzic 6215528e032SMichal Kazior sband = &ar->mac.sbands[status->band]; 6224b7f353bSYanbo Li status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck); 62373539b40SJanusz Dziedzic break; 62473539b40SJanusz Dziedzic case HTT_RX_HT: 62573539b40SJanusz Dziedzic case HTT_RX_HT_WITH_TXBF: 626b9fd8a84SMichal Kazior /* HT-SIG - Table 20-11 in info2 and info3 */ 627b9fd8a84SMichal Kazior mcs = info2 & 0x1F; 62873539b40SJanusz Dziedzic nss = mcs >> 3; 629b9fd8a84SMichal Kazior bw = (info2 >> 7) & 1; 630b9fd8a84SMichal Kazior sgi = (info3 >> 7) & 1; 63173539b40SJanusz Dziedzic 63273539b40SJanusz Dziedzic status->rate_idx = mcs; 63373539b40SJanusz Dziedzic status->flag |= RX_FLAG_HT; 63473539b40SJanusz Dziedzic if (sgi) 63573539b40SJanusz Dziedzic status->flag |= RX_FLAG_SHORT_GI; 63673539b40SJanusz Dziedzic if (bw) 63773539b40SJanusz Dziedzic status->flag |= RX_FLAG_40MHZ; 63873539b40SJanusz Dziedzic break; 63973539b40SJanusz Dziedzic case HTT_RX_VHT: 64073539b40SJanusz Dziedzic case HTT_RX_VHT_WITH_TXBF: 641b9fd8a84SMichal Kazior /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3 64273539b40SJanusz Dziedzic TODO check this */ 643b9fd8a84SMichal Kazior bw = info2 & 3; 644b9fd8a84SMichal Kazior sgi = info3 & 1; 6456986fdd6SMichal Kazior group_id = (info2 >> 4) & 0x3F; 6466986fdd6SMichal Kazior 6476986fdd6SMichal Kazior if (GROUP_ID_IS_SU_MIMO(group_id)) { 6486986fdd6SMichal Kazior mcs = (info3 >> 4) & 0x0F; 6496986fdd6SMichal Kazior nss = ((info2 >> 10) & 0x07) + 1; 6506986fdd6SMichal Kazior } else { 6516986fdd6SMichal Kazior /* Hardware doesn't decode VHT-SIG-B into Rx descriptor 6526986fdd6SMichal Kazior * so it's impossible to decode MCS. Also since 6536986fdd6SMichal Kazior * firmware consumes Group Id Management frames host 6546986fdd6SMichal Kazior * has no knowledge regarding group/user position 6556986fdd6SMichal Kazior * mapping so it's impossible to pick the correct Nsts 6566986fdd6SMichal Kazior * from VHT-SIG-A1. 6576986fdd6SMichal Kazior * 6586986fdd6SMichal Kazior * Bandwidth and SGI are valid so report the rateinfo 6596986fdd6SMichal Kazior * on best-effort basis. 6606986fdd6SMichal Kazior */ 6616986fdd6SMichal Kazior mcs = 0; 6626986fdd6SMichal Kazior nss = 1; 6636986fdd6SMichal Kazior } 66473539b40SJanusz Dziedzic 6656ccea107SManikanta Pubbisetty if (mcs > 0x09) { 6666ccea107SManikanta Pubbisetty ath10k_warn(ar, "invalid MCS received %u\n", mcs); 6676ccea107SManikanta Pubbisetty ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n", 6686ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->attention.flags), 6696ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->mpdu_start.info0), 6706ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->mpdu_start.info1), 6716ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->msdu_start.common.info0), 6726ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->msdu_start.common.info1), 6736ccea107SManikanta Pubbisetty rxd->ppdu_start.info0, 6746ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->ppdu_start.info1), 6756ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->ppdu_start.info2), 6766ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->ppdu_start.info3), 6776ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->ppdu_start.info4)); 6786ccea107SManikanta Pubbisetty 6796ccea107SManikanta Pubbisetty ath10k_warn(ar, "msdu end %08x mpdu end %08x\n", 6806ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->msdu_end.common.info0), 6816ccea107SManikanta Pubbisetty __le32_to_cpu(rxd->mpdu_end.info0)); 6826ccea107SManikanta Pubbisetty 6836ccea107SManikanta Pubbisetty ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, 6846ccea107SManikanta Pubbisetty "rx desc msdu payload: ", 6856ccea107SManikanta Pubbisetty rxd->msdu_payload, 50); 6866ccea107SManikanta Pubbisetty } 6876ccea107SManikanta Pubbisetty 68873539b40SJanusz Dziedzic status->rate_idx = mcs; 68973539b40SJanusz Dziedzic status->vht_nss = nss; 69073539b40SJanusz Dziedzic 69173539b40SJanusz Dziedzic if (sgi) 69273539b40SJanusz Dziedzic status->flag |= RX_FLAG_SHORT_GI; 69373539b40SJanusz Dziedzic 69473539b40SJanusz Dziedzic switch (bw) { 69573539b40SJanusz Dziedzic /* 20MHZ */ 69673539b40SJanusz Dziedzic case 0: 69773539b40SJanusz Dziedzic break; 69873539b40SJanusz Dziedzic /* 40MHZ */ 69973539b40SJanusz Dziedzic case 1: 70073539b40SJanusz Dziedzic status->flag |= RX_FLAG_40MHZ; 70173539b40SJanusz Dziedzic break; 70273539b40SJanusz Dziedzic /* 80MHZ */ 70373539b40SJanusz Dziedzic case 2: 70473539b40SJanusz Dziedzic status->vht_flag |= RX_VHT_FLAG_80MHZ; 705bc1efd73SSebastian Gottschall break; 706bc1efd73SSebastian Gottschall case 3: 707bc1efd73SSebastian Gottschall status->vht_flag |= RX_VHT_FLAG_160MHZ; 708bc1efd73SSebastian Gottschall break; 70973539b40SJanusz Dziedzic } 71073539b40SJanusz Dziedzic 71173539b40SJanusz Dziedzic status->flag |= RX_FLAG_VHT; 71273539b40SJanusz Dziedzic break; 71373539b40SJanusz Dziedzic default: 71473539b40SJanusz Dziedzic break; 71573539b40SJanusz Dziedzic } 71673539b40SJanusz Dziedzic } 71773539b40SJanusz Dziedzic 718500ff9f9SMichal Kazior static struct ieee80211_channel * 719500ff9f9SMichal Kazior ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) 720500ff9f9SMichal Kazior { 721500ff9f9SMichal Kazior struct ath10k_peer *peer; 722500ff9f9SMichal Kazior struct ath10k_vif *arvif; 723500ff9f9SMichal Kazior struct cfg80211_chan_def def; 724500ff9f9SMichal Kazior u16 peer_id; 725500ff9f9SMichal Kazior 726500ff9f9SMichal Kazior lockdep_assert_held(&ar->data_lock); 727500ff9f9SMichal Kazior 728500ff9f9SMichal Kazior if (!rxd) 729500ff9f9SMichal Kazior return NULL; 730500ff9f9SMichal Kazior 731500ff9f9SMichal Kazior if (rxd->attention.flags & 732500ff9f9SMichal Kazior __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) 733500ff9f9SMichal Kazior return NULL; 734500ff9f9SMichal Kazior 7351f5dbfbbSPeter Oh if (!(rxd->msdu_end.common.info0 & 736500ff9f9SMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) 737500ff9f9SMichal Kazior return NULL; 738500ff9f9SMichal Kazior 739500ff9f9SMichal Kazior peer_id = MS(__le32_to_cpu(rxd->mpdu_start.info0), 740500ff9f9SMichal Kazior RX_MPDU_START_INFO0_PEER_IDX); 741500ff9f9SMichal Kazior 742500ff9f9SMichal Kazior peer = ath10k_peer_find_by_id(ar, peer_id); 743500ff9f9SMichal Kazior if (!peer) 744500ff9f9SMichal Kazior return NULL; 745500ff9f9SMichal Kazior 746500ff9f9SMichal Kazior arvif = ath10k_get_arvif(ar, peer->vdev_id); 747500ff9f9SMichal Kazior if (WARN_ON_ONCE(!arvif)) 748500ff9f9SMichal Kazior return NULL; 749500ff9f9SMichal Kazior 750569fba2cSMohammed Shafi Shajakhan if (ath10k_mac_vif_chan(arvif->vif, &def)) 751500ff9f9SMichal Kazior return NULL; 752500ff9f9SMichal Kazior 753500ff9f9SMichal Kazior return def.chan; 754500ff9f9SMichal Kazior } 755500ff9f9SMichal Kazior 756500ff9f9SMichal Kazior static struct ieee80211_channel * 757500ff9f9SMichal Kazior ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) 758500ff9f9SMichal Kazior { 759500ff9f9SMichal Kazior struct ath10k_vif *arvif; 760500ff9f9SMichal Kazior struct cfg80211_chan_def def; 761500ff9f9SMichal Kazior 762500ff9f9SMichal Kazior lockdep_assert_held(&ar->data_lock); 763500ff9f9SMichal Kazior 764500ff9f9SMichal Kazior list_for_each_entry(arvif, &ar->arvifs, list) { 765500ff9f9SMichal Kazior if (arvif->vdev_id == vdev_id && 766500ff9f9SMichal Kazior ath10k_mac_vif_chan(arvif->vif, &def) == 0) 767500ff9f9SMichal Kazior return def.chan; 768500ff9f9SMichal Kazior } 769500ff9f9SMichal Kazior 770500ff9f9SMichal Kazior return NULL; 771500ff9f9SMichal Kazior } 772500ff9f9SMichal Kazior 773500ff9f9SMichal Kazior static void 774500ff9f9SMichal Kazior ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, 775500ff9f9SMichal Kazior struct ieee80211_chanctx_conf *conf, 776500ff9f9SMichal Kazior void *data) 777500ff9f9SMichal Kazior { 778500ff9f9SMichal Kazior struct cfg80211_chan_def *def = data; 779500ff9f9SMichal Kazior 780500ff9f9SMichal Kazior *def = conf->def; 781500ff9f9SMichal Kazior } 782500ff9f9SMichal Kazior 783500ff9f9SMichal Kazior static struct ieee80211_channel * 784500ff9f9SMichal Kazior ath10k_htt_rx_h_any_channel(struct ath10k *ar) 785500ff9f9SMichal Kazior { 786500ff9f9SMichal Kazior struct cfg80211_chan_def def = {}; 787500ff9f9SMichal Kazior 788500ff9f9SMichal Kazior ieee80211_iter_chan_contexts_atomic(ar->hw, 789500ff9f9SMichal Kazior ath10k_htt_rx_h_any_chan_iter, 790500ff9f9SMichal Kazior &def); 791500ff9f9SMichal Kazior 792500ff9f9SMichal Kazior return def.chan; 793500ff9f9SMichal Kazior } 794500ff9f9SMichal Kazior 79536653f05SJanusz Dziedzic static bool ath10k_htt_rx_h_channel(struct ath10k *ar, 796500ff9f9SMichal Kazior struct ieee80211_rx_status *status, 797500ff9f9SMichal Kazior struct htt_rx_desc *rxd, 798500ff9f9SMichal Kazior u32 vdev_id) 79936653f05SJanusz Dziedzic { 80036653f05SJanusz Dziedzic struct ieee80211_channel *ch; 80136653f05SJanusz Dziedzic 80236653f05SJanusz Dziedzic spin_lock_bh(&ar->data_lock); 80336653f05SJanusz Dziedzic ch = ar->scan_channel; 80436653f05SJanusz Dziedzic if (!ch) 80536653f05SJanusz Dziedzic ch = ar->rx_channel; 806500ff9f9SMichal Kazior if (!ch) 807500ff9f9SMichal Kazior ch = ath10k_htt_rx_h_peer_channel(ar, rxd); 808500ff9f9SMichal Kazior if (!ch) 809500ff9f9SMichal Kazior ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); 810500ff9f9SMichal Kazior if (!ch) 811500ff9f9SMichal Kazior ch = ath10k_htt_rx_h_any_channel(ar); 8122ce9b25cSRajkumar Manoharan if (!ch) 8132ce9b25cSRajkumar Manoharan ch = ar->tgt_oper_chan; 81436653f05SJanusz Dziedzic spin_unlock_bh(&ar->data_lock); 81536653f05SJanusz Dziedzic 81636653f05SJanusz Dziedzic if (!ch) 81736653f05SJanusz Dziedzic return false; 81836653f05SJanusz Dziedzic 81936653f05SJanusz Dziedzic status->band = ch->band; 82036653f05SJanusz Dziedzic status->freq = ch->center_freq; 82136653f05SJanusz Dziedzic 82236653f05SJanusz Dziedzic return true; 82336653f05SJanusz Dziedzic } 82436653f05SJanusz Dziedzic 825b9fd8a84SMichal Kazior static void ath10k_htt_rx_h_signal(struct ath10k *ar, 826b9fd8a84SMichal Kazior struct ieee80211_rx_status *status, 827b9fd8a84SMichal Kazior struct htt_rx_desc *rxd) 828b9fd8a84SMichal Kazior { 829b9fd8a84SMichal Kazior /* FIXME: Get real NF */ 830b9fd8a84SMichal Kazior status->signal = ATH10K_DEFAULT_NOISE_FLOOR + 831b9fd8a84SMichal Kazior rxd->ppdu_start.rssi_comb; 832b9fd8a84SMichal Kazior status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; 833b9fd8a84SMichal Kazior } 834b9fd8a84SMichal Kazior 835b9fd8a84SMichal Kazior static void ath10k_htt_rx_h_mactime(struct ath10k *ar, 836b9fd8a84SMichal Kazior struct ieee80211_rx_status *status, 837b9fd8a84SMichal Kazior struct htt_rx_desc *rxd) 838b9fd8a84SMichal Kazior { 839b9fd8a84SMichal Kazior /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This 840b9fd8a84SMichal Kazior * means all prior MSDUs in a PPDU are reported to mac80211 without the 841b9fd8a84SMichal Kazior * TSF. Is it worth holding frames until end of PPDU is known? 842b9fd8a84SMichal Kazior * 843b9fd8a84SMichal Kazior * FIXME: Can we get/compute 64bit TSF? 844b9fd8a84SMichal Kazior */ 8453ec79e3aSMichal Kazior status->mactime = __le32_to_cpu(rxd->ppdu_end.common.tsf_timestamp); 846b9fd8a84SMichal Kazior status->flag |= RX_FLAG_MACTIME_END; 847b9fd8a84SMichal Kazior } 848b9fd8a84SMichal Kazior 849b9fd8a84SMichal Kazior static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, 850b9fd8a84SMichal Kazior struct sk_buff_head *amsdu, 851500ff9f9SMichal Kazior struct ieee80211_rx_status *status, 852500ff9f9SMichal Kazior u32 vdev_id) 853b9fd8a84SMichal Kazior { 854b9fd8a84SMichal Kazior struct sk_buff *first; 855b9fd8a84SMichal Kazior struct htt_rx_desc *rxd; 856b9fd8a84SMichal Kazior bool is_first_ppdu; 857b9fd8a84SMichal Kazior bool is_last_ppdu; 858b9fd8a84SMichal Kazior 859b9fd8a84SMichal Kazior if (skb_queue_empty(amsdu)) 860b9fd8a84SMichal Kazior return; 861b9fd8a84SMichal Kazior 862b9fd8a84SMichal Kazior first = skb_peek(amsdu); 863b9fd8a84SMichal Kazior rxd = (void *)first->data - sizeof(*rxd); 864b9fd8a84SMichal Kazior 865b9fd8a84SMichal Kazior is_first_ppdu = !!(rxd->attention.flags & 866b9fd8a84SMichal Kazior __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU)); 867b9fd8a84SMichal Kazior is_last_ppdu = !!(rxd->attention.flags & 868b9fd8a84SMichal Kazior __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU)); 869b9fd8a84SMichal Kazior 870b9fd8a84SMichal Kazior if (is_first_ppdu) { 871b9fd8a84SMichal Kazior /* New PPDU starts so clear out the old per-PPDU status. */ 872b9fd8a84SMichal Kazior status->freq = 0; 873b9fd8a84SMichal Kazior status->rate_idx = 0; 874b9fd8a84SMichal Kazior status->vht_nss = 0; 875b9fd8a84SMichal Kazior status->vht_flag &= ~RX_VHT_FLAG_80MHZ; 876b9fd8a84SMichal Kazior status->flag &= ~(RX_FLAG_HT | 877b9fd8a84SMichal Kazior RX_FLAG_VHT | 878b9fd8a84SMichal Kazior RX_FLAG_SHORT_GI | 879b9fd8a84SMichal Kazior RX_FLAG_40MHZ | 880b9fd8a84SMichal Kazior RX_FLAG_MACTIME_END); 881b9fd8a84SMichal Kazior status->flag |= RX_FLAG_NO_SIGNAL_VAL; 882b9fd8a84SMichal Kazior 883b9fd8a84SMichal Kazior ath10k_htt_rx_h_signal(ar, status, rxd); 884500ff9f9SMichal Kazior ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); 885b9fd8a84SMichal Kazior ath10k_htt_rx_h_rates(ar, status, rxd); 886b9fd8a84SMichal Kazior } 887b9fd8a84SMichal Kazior 888b9fd8a84SMichal Kazior if (is_last_ppdu) 889b9fd8a84SMichal Kazior ath10k_htt_rx_h_mactime(ar, status, rxd); 890b9fd8a84SMichal Kazior } 891b9fd8a84SMichal Kazior 89276f5329aSJanusz Dziedzic static const char * const tid_to_ac[] = { 89376f5329aSJanusz Dziedzic "BE", 89476f5329aSJanusz Dziedzic "BK", 89576f5329aSJanusz Dziedzic "BK", 89676f5329aSJanusz Dziedzic "BE", 89776f5329aSJanusz Dziedzic "VI", 89876f5329aSJanusz Dziedzic "VI", 89976f5329aSJanusz Dziedzic "VO", 90076f5329aSJanusz Dziedzic "VO", 90176f5329aSJanusz Dziedzic }; 90276f5329aSJanusz Dziedzic 90376f5329aSJanusz Dziedzic static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) 90476f5329aSJanusz Dziedzic { 90576f5329aSJanusz Dziedzic u8 *qc; 90676f5329aSJanusz Dziedzic int tid; 90776f5329aSJanusz Dziedzic 90876f5329aSJanusz Dziedzic if (!ieee80211_is_data_qos(hdr->frame_control)) 90976f5329aSJanusz Dziedzic return ""; 91076f5329aSJanusz Dziedzic 91176f5329aSJanusz Dziedzic qc = ieee80211_get_qos_ctl(hdr); 91276f5329aSJanusz Dziedzic tid = *qc & IEEE80211_QOS_CTL_TID_MASK; 91376f5329aSJanusz Dziedzic if (tid < 8) 91476f5329aSJanusz Dziedzic snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]); 91576f5329aSJanusz Dziedzic else 91676f5329aSJanusz Dziedzic snprintf(out, size, "tid %d", tid); 91776f5329aSJanusz Dziedzic 91876f5329aSJanusz Dziedzic return out; 91976f5329aSJanusz Dziedzic } 92076f5329aSJanusz Dziedzic 92185f6d7cfSJanusz Dziedzic static void ath10k_process_rx(struct ath10k *ar, 92285f6d7cfSJanusz Dziedzic struct ieee80211_rx_status *rx_status, 92385f6d7cfSJanusz Dziedzic struct sk_buff *skb) 92473539b40SJanusz Dziedzic { 92573539b40SJanusz Dziedzic struct ieee80211_rx_status *status; 92676f5329aSJanusz Dziedzic struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 92776f5329aSJanusz Dziedzic char tid[32]; 92873539b40SJanusz Dziedzic 92985f6d7cfSJanusz Dziedzic status = IEEE80211_SKB_RXCB(skb); 93085f6d7cfSJanusz Dziedzic *status = *rx_status; 93173539b40SJanusz Dziedzic 9327aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_DATA, 933bc1efd73SSebastian Gottschall "rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%llx fcs-err %i mic-err %i amsdu-more %i\n", 93485f6d7cfSJanusz Dziedzic skb, 93585f6d7cfSJanusz Dziedzic skb->len, 93676f5329aSJanusz Dziedzic ieee80211_get_SA(hdr), 93776f5329aSJanusz Dziedzic ath10k_get_tid(hdr, tid, sizeof(tid)), 93876f5329aSJanusz Dziedzic is_multicast_ether_addr(ieee80211_get_DA(hdr)) ? 93976f5329aSJanusz Dziedzic "mcast" : "ucast", 94076f5329aSJanusz Dziedzic (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4, 941026441c9SMohammed Shafi Shajakhan (status->flag & (RX_FLAG_HT | RX_FLAG_VHT)) == 0 ? 942026441c9SMohammed Shafi Shajakhan "legacy" : "", 94373539b40SJanusz Dziedzic status->flag & RX_FLAG_HT ? "ht" : "", 94473539b40SJanusz Dziedzic status->flag & RX_FLAG_VHT ? "vht" : "", 94573539b40SJanusz Dziedzic status->flag & RX_FLAG_40MHZ ? "40" : "", 94673539b40SJanusz Dziedzic status->vht_flag & RX_VHT_FLAG_80MHZ ? "80" : "", 947bc1efd73SSebastian Gottschall status->vht_flag & RX_VHT_FLAG_160MHZ ? "160" : "", 94873539b40SJanusz Dziedzic status->flag & RX_FLAG_SHORT_GI ? "sgi " : "", 94973539b40SJanusz Dziedzic status->rate_idx, 95073539b40SJanusz Dziedzic status->vht_nss, 95173539b40SJanusz Dziedzic status->freq, 95287326c97SJanusz Dziedzic status->band, status->flag, 95378433f96SJanusz Dziedzic !!(status->flag & RX_FLAG_FAILED_FCS_CRC), 95476f5329aSJanusz Dziedzic !!(status->flag & RX_FLAG_MMIC_ERROR), 95576f5329aSJanusz Dziedzic !!(status->flag & RX_FLAG_AMSDU_MORE)); 9567aa7a72aSMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ", 95785f6d7cfSJanusz Dziedzic skb->data, skb->len); 9585ce8e7fdSRajkumar Manoharan trace_ath10k_rx_hdr(ar, skb->data, skb->len); 9595ce8e7fdSRajkumar Manoharan trace_ath10k_rx_payload(ar, skb->data, skb->len); 96073539b40SJanusz Dziedzic 9613c97f5deSRajkumar Manoharan ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); 96273539b40SJanusz Dziedzic } 96373539b40SJanusz Dziedzic 96448f4ca34SMichal Kazior static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar, 96548f4ca34SMichal Kazior struct ieee80211_hdr *hdr) 966d960c369SMichal Kazior { 96748f4ca34SMichal Kazior int len = ieee80211_hdrlen(hdr->frame_control); 96848f4ca34SMichal Kazior 96948f4ca34SMichal Kazior if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING, 970c4cdf753SKalle Valo ar->running_fw->fw_file.fw_features)) 97148f4ca34SMichal Kazior len = round_up(len, 4); 97248f4ca34SMichal Kazior 97348f4ca34SMichal Kazior return len; 974d960c369SMichal Kazior } 975d960c369SMichal Kazior 976581c25f8SMichal Kazior static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, 977581c25f8SMichal Kazior struct sk_buff *msdu, 978581c25f8SMichal Kazior struct ieee80211_rx_status *status, 979581c25f8SMichal Kazior enum htt_rx_mpdu_encrypt_type enctype, 980581c25f8SMichal Kazior bool is_decrypted) 9815e3dd157SKalle Valo { 982f6dc2095SMichal Kazior struct ieee80211_hdr *hdr; 983581c25f8SMichal Kazior struct htt_rx_desc *rxd; 984581c25f8SMichal Kazior size_t hdr_len; 985581c25f8SMichal Kazior size_t crypto_len; 986581c25f8SMichal Kazior bool is_first; 987581c25f8SMichal Kazior bool is_last; 9885e3dd157SKalle Valo 989581c25f8SMichal Kazior rxd = (void *)msdu->data - sizeof(*rxd); 9901f5dbfbbSPeter Oh is_first = !!(rxd->msdu_end.common.info0 & 991581c25f8SMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 9921f5dbfbbSPeter Oh is_last = !!(rxd->msdu_end.common.info0 & 993581c25f8SMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 9949aa505d2SMichal Kazior 995581c25f8SMichal Kazior /* Delivered decapped frame: 996581c25f8SMichal Kazior * [802.11 header] 997581c25f8SMichal Kazior * [crypto param] <-- can be trimmed if !fcs_err && 998581c25f8SMichal Kazior * !decrypt_err && !peer_idx_invalid 999581c25f8SMichal Kazior * [amsdu header] <-- only if A-MSDU 1000581c25f8SMichal Kazior * [rfc1042/llc] 1001581c25f8SMichal Kazior * [payload] 1002581c25f8SMichal Kazior * [FCS] <-- at end, needs to be trimmed 1003581c25f8SMichal Kazior */ 10045e3dd157SKalle Valo 1005581c25f8SMichal Kazior /* This probably shouldn't happen but warn just in case */ 1006581c25f8SMichal Kazior if (unlikely(WARN_ON_ONCE(!is_first))) 1007581c25f8SMichal Kazior return; 1008581c25f8SMichal Kazior 1009581c25f8SMichal Kazior /* This probably shouldn't happen but warn just in case */ 1010581c25f8SMichal Kazior if (unlikely(WARN_ON_ONCE(!(is_first && is_last)))) 1011581c25f8SMichal Kazior return; 1012581c25f8SMichal Kazior 1013581c25f8SMichal Kazior skb_trim(msdu, msdu->len - FCS_LEN); 1014581c25f8SMichal Kazior 1015581c25f8SMichal Kazior /* In most cases this will be true for sniffed frames. It makes sense 1016ccec9038SDavid Liu * to deliver them as-is without stripping the crypto param. This is 1017ccec9038SDavid Liu * necessary for software based decryption. 1018581c25f8SMichal Kazior * 1019581c25f8SMichal Kazior * If there's no error then the frame is decrypted. At least that is 1020581c25f8SMichal Kazior * the case for frames that come in via fragmented rx indication. 1021581c25f8SMichal Kazior */ 1022581c25f8SMichal Kazior if (!is_decrypted) 1023581c25f8SMichal Kazior return; 1024581c25f8SMichal Kazior 1025581c25f8SMichal Kazior /* The payload is decrypted so strip crypto params. Start from tail 1026581c25f8SMichal Kazior * since hdr is used to compute some stuff. 1027581c25f8SMichal Kazior */ 1028581c25f8SMichal Kazior 1029581c25f8SMichal Kazior hdr = (void *)msdu->data; 1030581c25f8SMichal Kazior 1031581c25f8SMichal Kazior /* Tail */ 103260549cabSGrzegorz Bajorski if (status->flag & RX_FLAG_IV_STRIPPED) 103360549cabSGrzegorz Bajorski skb_trim(msdu, msdu->len - 103460549cabSGrzegorz Bajorski ath10k_htt_rx_crypto_tail_len(ar, enctype)); 1035581c25f8SMichal Kazior 1036581c25f8SMichal Kazior /* MMIC */ 103760549cabSGrzegorz Bajorski if ((status->flag & RX_FLAG_MMIC_STRIPPED) && 103860549cabSGrzegorz Bajorski !ieee80211_has_morefrags(hdr->frame_control) && 1039581c25f8SMichal Kazior enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) 1040581c25f8SMichal Kazior skb_trim(msdu, msdu->len - 8); 1041581c25f8SMichal Kazior 1042581c25f8SMichal Kazior /* Head */ 104360549cabSGrzegorz Bajorski if (status->flag & RX_FLAG_IV_STRIPPED) { 1044f6dc2095SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1045581c25f8SMichal Kazior crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 10465e3dd157SKalle Valo 1047581c25f8SMichal Kazior memmove((void *)msdu->data + crypto_len, 1048581c25f8SMichal Kazior (void *)msdu->data, hdr_len); 1049581c25f8SMichal Kazior skb_pull(msdu, crypto_len); 10505e3dd157SKalle Valo } 105160549cabSGrzegorz Bajorski } 10525e3dd157SKalle Valo 1053581c25f8SMichal Kazior static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar, 1054581c25f8SMichal Kazior struct sk_buff *msdu, 1055581c25f8SMichal Kazior struct ieee80211_rx_status *status, 1056581c25f8SMichal Kazior const u8 first_hdr[64]) 1057581c25f8SMichal Kazior { 1058581c25f8SMichal Kazior struct ieee80211_hdr *hdr; 10599e19e132SVasanthakumar Thiagarajan struct htt_rx_desc *rxd; 1060581c25f8SMichal Kazior size_t hdr_len; 1061581c25f8SMichal Kazior u8 da[ETH_ALEN]; 1062581c25f8SMichal Kazior u8 sa[ETH_ALEN]; 10639e19e132SVasanthakumar Thiagarajan int l3_pad_bytes; 1064581c25f8SMichal Kazior 1065581c25f8SMichal Kazior /* Delivered decapped frame: 1066581c25f8SMichal Kazior * [nwifi 802.11 header] <-- replaced with 802.11 hdr 1067581c25f8SMichal Kazior * [rfc1042/llc] 1068581c25f8SMichal Kazior * 1069581c25f8SMichal Kazior * Note: The nwifi header doesn't have QoS Control and is 1070581c25f8SMichal Kazior * (always?) a 3addr frame. 1071581c25f8SMichal Kazior * 1072581c25f8SMichal Kazior * Note2: There's no A-MSDU subframe header. Even if it's part 1073581c25f8SMichal Kazior * of an A-MSDU. 1074581c25f8SMichal Kazior */ 1075581c25f8SMichal Kazior 107672bdeb86SMichal Kazior /* pull decapped header and copy SA & DA */ 10779e19e132SVasanthakumar Thiagarajan rxd = (void *)msdu->data - sizeof(*rxd); 10789e19e132SVasanthakumar Thiagarajan 10799e19e132SVasanthakumar Thiagarajan l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 10809e19e132SVasanthakumar Thiagarajan skb_put(msdu, l3_pad_bytes); 10819e19e132SVasanthakumar Thiagarajan 10829e19e132SVasanthakumar Thiagarajan hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes); 1083b8d55fcaSYanbo Li 108448f4ca34SMichal Kazior hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr); 1085b25f32cbSKalle Valo ether_addr_copy(da, ieee80211_get_DA(hdr)); 1086b25f32cbSKalle Valo ether_addr_copy(sa, ieee80211_get_SA(hdr)); 1087581c25f8SMichal Kazior skb_pull(msdu, hdr_len); 1088784f69d3SMichal Kazior 1089784f69d3SMichal Kazior /* push original 802.11 header */ 1090581c25f8SMichal Kazior hdr = (struct ieee80211_hdr *)first_hdr; 1091784f69d3SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1092581c25f8SMichal Kazior memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1093784f69d3SMichal Kazior 109472bdeb86SMichal Kazior /* original 802.11 header has a different DA and in 109572bdeb86SMichal Kazior * case of 4addr it may also have different SA 109672bdeb86SMichal Kazior */ 1097581c25f8SMichal Kazior hdr = (struct ieee80211_hdr *)msdu->data; 1098b25f32cbSKalle Valo ether_addr_copy(ieee80211_get_DA(hdr), da); 1099b25f32cbSKalle Valo ether_addr_copy(ieee80211_get_SA(hdr), sa); 11005e3dd157SKalle Valo } 11015e3dd157SKalle Valo 1102581c25f8SMichal Kazior static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar, 1103581c25f8SMichal Kazior struct sk_buff *msdu, 1104581c25f8SMichal Kazior enum htt_rx_mpdu_encrypt_type enctype) 11055e3dd157SKalle Valo { 11065e3dd157SKalle Valo struct ieee80211_hdr *hdr; 1107581c25f8SMichal Kazior struct htt_rx_desc *rxd; 1108581c25f8SMichal Kazior size_t hdr_len, crypto_len; 1109e3fbf8d2SMichal Kazior void *rfc1042; 1110581c25f8SMichal Kazior bool is_first, is_last, is_amsdu; 11112f38c3c0SVasanthakumar Thiagarajan int bytes_aligned = ar->hw_params.decap_align_bytes; 11125e3dd157SKalle Valo 1113581c25f8SMichal Kazior rxd = (void *)msdu->data - sizeof(*rxd); 1114581c25f8SMichal Kazior hdr = (void *)rxd->rx_hdr_status; 11155e3dd157SKalle Valo 11161f5dbfbbSPeter Oh is_first = !!(rxd->msdu_end.common.info0 & 1117581c25f8SMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); 11181f5dbfbbSPeter Oh is_last = !!(rxd->msdu_end.common.info0 & 1119581c25f8SMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); 1120581c25f8SMichal Kazior is_amsdu = !(is_first && is_last); 1121e3fbf8d2SMichal Kazior 1122e3fbf8d2SMichal Kazior rfc1042 = hdr; 1123e3fbf8d2SMichal Kazior 1124581c25f8SMichal Kazior if (is_first) { 1125581c25f8SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1126581c25f8SMichal Kazior crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); 1127e3fbf8d2SMichal Kazior 11282f38c3c0SVasanthakumar Thiagarajan rfc1042 += round_up(hdr_len, bytes_aligned) + 11292f38c3c0SVasanthakumar Thiagarajan round_up(crypto_len, bytes_aligned); 11305e3dd157SKalle Valo } 11315e3dd157SKalle Valo 1132581c25f8SMichal Kazior if (is_amsdu) 1133581c25f8SMichal Kazior rfc1042 += sizeof(struct amsdu_subframe_hdr); 1134f6dc2095SMichal Kazior 1135581c25f8SMichal Kazior return rfc1042; 1136581c25f8SMichal Kazior } 1137581c25f8SMichal Kazior 1138581c25f8SMichal Kazior static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar, 1139581c25f8SMichal Kazior struct sk_buff *msdu, 1140581c25f8SMichal Kazior struct ieee80211_rx_status *status, 1141581c25f8SMichal Kazior const u8 first_hdr[64], 1142581c25f8SMichal Kazior enum htt_rx_mpdu_encrypt_type enctype) 1143581c25f8SMichal Kazior { 1144581c25f8SMichal Kazior struct ieee80211_hdr *hdr; 1145581c25f8SMichal Kazior struct ethhdr *eth; 1146581c25f8SMichal Kazior size_t hdr_len; 1147581c25f8SMichal Kazior void *rfc1042; 1148581c25f8SMichal Kazior u8 da[ETH_ALEN]; 1149581c25f8SMichal Kazior u8 sa[ETH_ALEN]; 11509e19e132SVasanthakumar Thiagarajan int l3_pad_bytes; 11519e19e132SVasanthakumar Thiagarajan struct htt_rx_desc *rxd; 1152581c25f8SMichal Kazior 1153581c25f8SMichal Kazior /* Delivered decapped frame: 1154581c25f8SMichal Kazior * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc 1155581c25f8SMichal Kazior * [payload] 1156581c25f8SMichal Kazior */ 1157581c25f8SMichal Kazior 1158581c25f8SMichal Kazior rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype); 1159581c25f8SMichal Kazior if (WARN_ON_ONCE(!rfc1042)) 1160581c25f8SMichal Kazior return; 1161581c25f8SMichal Kazior 11629e19e132SVasanthakumar Thiagarajan rxd = (void *)msdu->data - sizeof(*rxd); 11639e19e132SVasanthakumar Thiagarajan l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 11649e19e132SVasanthakumar Thiagarajan skb_put(msdu, l3_pad_bytes); 11659e19e132SVasanthakumar Thiagarajan skb_pull(msdu, l3_pad_bytes); 11669e19e132SVasanthakumar Thiagarajan 1167581c25f8SMichal Kazior /* pull decapped header and copy SA & DA */ 1168581c25f8SMichal Kazior eth = (struct ethhdr *)msdu->data; 1169581c25f8SMichal Kazior ether_addr_copy(da, eth->h_dest); 1170581c25f8SMichal Kazior ether_addr_copy(sa, eth->h_source); 1171581c25f8SMichal Kazior skb_pull(msdu, sizeof(struct ethhdr)); 1172581c25f8SMichal Kazior 1173581c25f8SMichal Kazior /* push rfc1042/llc/snap */ 1174581c25f8SMichal Kazior memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042, 1175581c25f8SMichal Kazior sizeof(struct rfc1042_hdr)); 1176581c25f8SMichal Kazior 1177581c25f8SMichal Kazior /* push original 802.11 header */ 1178581c25f8SMichal Kazior hdr = (struct ieee80211_hdr *)first_hdr; 1179581c25f8SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1180581c25f8SMichal Kazior memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1181581c25f8SMichal Kazior 1182581c25f8SMichal Kazior /* original 802.11 header has a different DA and in 1183581c25f8SMichal Kazior * case of 4addr it may also have different SA 1184581c25f8SMichal Kazior */ 1185581c25f8SMichal Kazior hdr = (struct ieee80211_hdr *)msdu->data; 1186581c25f8SMichal Kazior ether_addr_copy(ieee80211_get_DA(hdr), da); 1187581c25f8SMichal Kazior ether_addr_copy(ieee80211_get_SA(hdr), sa); 1188581c25f8SMichal Kazior } 1189581c25f8SMichal Kazior 1190581c25f8SMichal Kazior static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar, 1191581c25f8SMichal Kazior struct sk_buff *msdu, 1192581c25f8SMichal Kazior struct ieee80211_rx_status *status, 1193581c25f8SMichal Kazior const u8 first_hdr[64]) 1194581c25f8SMichal Kazior { 1195581c25f8SMichal Kazior struct ieee80211_hdr *hdr; 1196581c25f8SMichal Kazior size_t hdr_len; 11979e19e132SVasanthakumar Thiagarajan int l3_pad_bytes; 11989e19e132SVasanthakumar Thiagarajan struct htt_rx_desc *rxd; 1199581c25f8SMichal Kazior 1200581c25f8SMichal Kazior /* Delivered decapped frame: 1201581c25f8SMichal Kazior * [amsdu header] <-- replaced with 802.11 hdr 1202581c25f8SMichal Kazior * [rfc1042/llc] 1203581c25f8SMichal Kazior * [payload] 1204581c25f8SMichal Kazior */ 1205581c25f8SMichal Kazior 12069e19e132SVasanthakumar Thiagarajan rxd = (void *)msdu->data - sizeof(*rxd); 12079e19e132SVasanthakumar Thiagarajan l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); 12089e19e132SVasanthakumar Thiagarajan 12099e19e132SVasanthakumar Thiagarajan skb_put(msdu, l3_pad_bytes); 12109e19e132SVasanthakumar Thiagarajan skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes); 1211581c25f8SMichal Kazior 1212581c25f8SMichal Kazior hdr = (struct ieee80211_hdr *)first_hdr; 1213581c25f8SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1214581c25f8SMichal Kazior memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); 1215581c25f8SMichal Kazior } 1216581c25f8SMichal Kazior 1217581c25f8SMichal Kazior static void ath10k_htt_rx_h_undecap(struct ath10k *ar, 1218581c25f8SMichal Kazior struct sk_buff *msdu, 1219581c25f8SMichal Kazior struct ieee80211_rx_status *status, 1220581c25f8SMichal Kazior u8 first_hdr[64], 1221581c25f8SMichal Kazior enum htt_rx_mpdu_encrypt_type enctype, 1222581c25f8SMichal Kazior bool is_decrypted) 1223581c25f8SMichal Kazior { 1224581c25f8SMichal Kazior struct htt_rx_desc *rxd; 1225581c25f8SMichal Kazior enum rx_msdu_decap_format decap; 1226581c25f8SMichal Kazior 1227581c25f8SMichal Kazior /* First msdu's decapped header: 1228581c25f8SMichal Kazior * [802.11 header] <-- padded to 4 bytes long 1229581c25f8SMichal Kazior * [crypto param] <-- padded to 4 bytes long 1230581c25f8SMichal Kazior * [amsdu header] <-- only if A-MSDU 1231581c25f8SMichal Kazior * [rfc1042/llc] 1232581c25f8SMichal Kazior * 1233581c25f8SMichal Kazior * Other (2nd, 3rd, ..) msdu's decapped header: 1234581c25f8SMichal Kazior * [amsdu header] <-- only if A-MSDU 1235581c25f8SMichal Kazior * [rfc1042/llc] 1236581c25f8SMichal Kazior */ 1237581c25f8SMichal Kazior 1238581c25f8SMichal Kazior rxd = (void *)msdu->data - sizeof(*rxd); 12391f5dbfbbSPeter Oh decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1), 1240581c25f8SMichal Kazior RX_MSDU_START_INFO1_DECAP_FORMAT); 1241581c25f8SMichal Kazior 1242581c25f8SMichal Kazior switch (decap) { 1243581c25f8SMichal Kazior case RX_MSDU_DECAP_RAW: 1244581c25f8SMichal Kazior ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype, 1245581c25f8SMichal Kazior is_decrypted); 1246581c25f8SMichal Kazior break; 1247581c25f8SMichal Kazior case RX_MSDU_DECAP_NATIVE_WIFI: 1248581c25f8SMichal Kazior ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr); 1249581c25f8SMichal Kazior break; 1250581c25f8SMichal Kazior case RX_MSDU_DECAP_ETHERNET2_DIX: 1251581c25f8SMichal Kazior ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype); 1252581c25f8SMichal Kazior break; 1253581c25f8SMichal Kazior case RX_MSDU_DECAP_8023_SNAP_LLC: 1254581c25f8SMichal Kazior ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr); 1255581c25f8SMichal Kazior break; 1256581c25f8SMichal Kazior } 12575e3dd157SKalle Valo } 12585e3dd157SKalle Valo 1259605f81aaSMichal Kazior static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb) 1260605f81aaSMichal Kazior { 1261605f81aaSMichal Kazior struct htt_rx_desc *rxd; 1262605f81aaSMichal Kazior u32 flags, info; 1263605f81aaSMichal Kazior bool is_ip4, is_ip6; 1264605f81aaSMichal Kazior bool is_tcp, is_udp; 1265605f81aaSMichal Kazior bool ip_csum_ok, tcpudp_csum_ok; 1266605f81aaSMichal Kazior 1267605f81aaSMichal Kazior rxd = (void *)skb->data - sizeof(*rxd); 1268605f81aaSMichal Kazior flags = __le32_to_cpu(rxd->attention.flags); 12691f5dbfbbSPeter Oh info = __le32_to_cpu(rxd->msdu_start.common.info1); 1270605f81aaSMichal Kazior 1271605f81aaSMichal Kazior is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO); 1272605f81aaSMichal Kazior is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO); 1273605f81aaSMichal Kazior is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO); 1274605f81aaSMichal Kazior is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO); 1275605f81aaSMichal Kazior ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL); 1276605f81aaSMichal Kazior tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL); 1277605f81aaSMichal Kazior 1278605f81aaSMichal Kazior if (!is_ip4 && !is_ip6) 1279605f81aaSMichal Kazior return CHECKSUM_NONE; 1280605f81aaSMichal Kazior if (!is_tcp && !is_udp) 1281605f81aaSMichal Kazior return CHECKSUM_NONE; 1282605f81aaSMichal Kazior if (!ip_csum_ok) 1283605f81aaSMichal Kazior return CHECKSUM_NONE; 1284605f81aaSMichal Kazior if (!tcpudp_csum_ok) 1285605f81aaSMichal Kazior return CHECKSUM_NONE; 1286605f81aaSMichal Kazior 1287605f81aaSMichal Kazior return CHECKSUM_UNNECESSARY; 1288605f81aaSMichal Kazior } 1289605f81aaSMichal Kazior 1290581c25f8SMichal Kazior static void ath10k_htt_rx_h_csum_offload(struct sk_buff *msdu) 1291581c25f8SMichal Kazior { 1292581c25f8SMichal Kazior msdu->ip_summed = ath10k_htt_rx_get_csum_state(msdu); 1293581c25f8SMichal Kazior } 1294581c25f8SMichal Kazior 1295581c25f8SMichal Kazior static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 1296581c25f8SMichal Kazior struct sk_buff_head *amsdu, 1297581c25f8SMichal Kazior struct ieee80211_rx_status *status) 1298581c25f8SMichal Kazior { 1299581c25f8SMichal Kazior struct sk_buff *first; 1300581c25f8SMichal Kazior struct sk_buff *last; 1301581c25f8SMichal Kazior struct sk_buff *msdu; 1302581c25f8SMichal Kazior struct htt_rx_desc *rxd; 1303581c25f8SMichal Kazior struct ieee80211_hdr *hdr; 1304581c25f8SMichal Kazior enum htt_rx_mpdu_encrypt_type enctype; 1305581c25f8SMichal Kazior u8 first_hdr[64]; 1306581c25f8SMichal Kazior u8 *qos; 1307581c25f8SMichal Kazior size_t hdr_len; 1308581c25f8SMichal Kazior bool has_fcs_err; 1309581c25f8SMichal Kazior bool has_crypto_err; 1310581c25f8SMichal Kazior bool has_tkip_err; 1311581c25f8SMichal Kazior bool has_peer_idx_invalid; 1312581c25f8SMichal Kazior bool is_decrypted; 131360549cabSGrzegorz Bajorski bool is_mgmt; 1314581c25f8SMichal Kazior u32 attention; 1315581c25f8SMichal Kazior 1316581c25f8SMichal Kazior if (skb_queue_empty(amsdu)) 1317581c25f8SMichal Kazior return; 1318581c25f8SMichal Kazior 1319581c25f8SMichal Kazior first = skb_peek(amsdu); 1320581c25f8SMichal Kazior rxd = (void *)first->data - sizeof(*rxd); 1321581c25f8SMichal Kazior 132260549cabSGrzegorz Bajorski is_mgmt = !!(rxd->attention.flags & 132360549cabSGrzegorz Bajorski __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE)); 132460549cabSGrzegorz Bajorski 1325581c25f8SMichal Kazior enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0), 1326581c25f8SMichal Kazior RX_MPDU_START_INFO0_ENCRYPT_TYPE); 1327581c25f8SMichal Kazior 1328581c25f8SMichal Kazior /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11 1329581c25f8SMichal Kazior * decapped header. It'll be used for undecapping of each MSDU. 1330581c25f8SMichal Kazior */ 1331581c25f8SMichal Kazior hdr = (void *)rxd->rx_hdr_status; 1332581c25f8SMichal Kazior hdr_len = ieee80211_hdrlen(hdr->frame_control); 1333581c25f8SMichal Kazior memcpy(first_hdr, hdr, hdr_len); 1334581c25f8SMichal Kazior 1335581c25f8SMichal Kazior /* Each A-MSDU subframe will use the original header as the base and be 1336581c25f8SMichal Kazior * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl. 1337581c25f8SMichal Kazior */ 1338581c25f8SMichal Kazior hdr = (void *)first_hdr; 1339581c25f8SMichal Kazior qos = ieee80211_get_qos_ctl(hdr); 1340581c25f8SMichal Kazior qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; 1341581c25f8SMichal Kazior 1342581c25f8SMichal Kazior /* Some attention flags are valid only in the last MSDU. */ 1343581c25f8SMichal Kazior last = skb_peek_tail(amsdu); 1344581c25f8SMichal Kazior rxd = (void *)last->data - sizeof(*rxd); 1345581c25f8SMichal Kazior attention = __le32_to_cpu(rxd->attention.flags); 1346581c25f8SMichal Kazior 1347581c25f8SMichal Kazior has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR); 1348581c25f8SMichal Kazior has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR); 1349581c25f8SMichal Kazior has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR); 1350581c25f8SMichal Kazior has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID); 1351581c25f8SMichal Kazior 1352581c25f8SMichal Kazior /* Note: If hardware captures an encrypted frame that it can't decrypt, 1353581c25f8SMichal Kazior * e.g. due to fcs error, missing peer or invalid key data it will 1354581c25f8SMichal Kazior * report the frame as raw. 1355581c25f8SMichal Kazior */ 1356581c25f8SMichal Kazior is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE && 1357581c25f8SMichal Kazior !has_fcs_err && 1358581c25f8SMichal Kazior !has_crypto_err && 1359581c25f8SMichal Kazior !has_peer_idx_invalid); 1360581c25f8SMichal Kazior 1361581c25f8SMichal Kazior /* Clear per-MPDU flags while leaving per-PPDU flags intact. */ 1362581c25f8SMichal Kazior status->flag &= ~(RX_FLAG_FAILED_FCS_CRC | 1363581c25f8SMichal Kazior RX_FLAG_MMIC_ERROR | 1364581c25f8SMichal Kazior RX_FLAG_DECRYPTED | 1365581c25f8SMichal Kazior RX_FLAG_IV_STRIPPED | 136660549cabSGrzegorz Bajorski RX_FLAG_ONLY_MONITOR | 1367581c25f8SMichal Kazior RX_FLAG_MMIC_STRIPPED); 1368581c25f8SMichal Kazior 1369581c25f8SMichal Kazior if (has_fcs_err) 1370581c25f8SMichal Kazior status->flag |= RX_FLAG_FAILED_FCS_CRC; 1371581c25f8SMichal Kazior 1372581c25f8SMichal Kazior if (has_tkip_err) 1373581c25f8SMichal Kazior status->flag |= RX_FLAG_MMIC_ERROR; 1374581c25f8SMichal Kazior 137560549cabSGrzegorz Bajorski /* Firmware reports all necessary management frames via WMI already. 137660549cabSGrzegorz Bajorski * They are not reported to monitor interfaces at all so pass the ones 137760549cabSGrzegorz Bajorski * coming via HTT to monitor interfaces instead. This simplifies 137860549cabSGrzegorz Bajorski * matters a lot. 137960549cabSGrzegorz Bajorski */ 138060549cabSGrzegorz Bajorski if (is_mgmt) 138160549cabSGrzegorz Bajorski status->flag |= RX_FLAG_ONLY_MONITOR; 138260549cabSGrzegorz Bajorski 138360549cabSGrzegorz Bajorski if (is_decrypted) { 138460549cabSGrzegorz Bajorski status->flag |= RX_FLAG_DECRYPTED; 138560549cabSGrzegorz Bajorski 138660549cabSGrzegorz Bajorski if (likely(!is_mgmt)) 138760549cabSGrzegorz Bajorski status->flag |= RX_FLAG_IV_STRIPPED | 1388581c25f8SMichal Kazior RX_FLAG_MMIC_STRIPPED; 138960549cabSGrzegorz Bajorski } 1390581c25f8SMichal Kazior 1391581c25f8SMichal Kazior skb_queue_walk(amsdu, msdu) { 1392581c25f8SMichal Kazior ath10k_htt_rx_h_csum_offload(msdu); 1393581c25f8SMichal Kazior ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, 1394581c25f8SMichal Kazior is_decrypted); 1395581c25f8SMichal Kazior 1396581c25f8SMichal Kazior /* Undecapping involves copying the original 802.11 header back 1397581c25f8SMichal Kazior * to sk_buff. If frame is protected and hardware has decrypted 1398581c25f8SMichal Kazior * it then remove the protected bit. 1399581c25f8SMichal Kazior */ 1400581c25f8SMichal Kazior if (!is_decrypted) 1401581c25f8SMichal Kazior continue; 140260549cabSGrzegorz Bajorski if (is_mgmt) 140360549cabSGrzegorz Bajorski continue; 1404581c25f8SMichal Kazior 1405581c25f8SMichal Kazior hdr = (void *)msdu->data; 1406581c25f8SMichal Kazior hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1407581c25f8SMichal Kazior } 1408581c25f8SMichal Kazior } 1409581c25f8SMichal Kazior 1410581c25f8SMichal Kazior static void ath10k_htt_rx_h_deliver(struct ath10k *ar, 1411581c25f8SMichal Kazior struct sk_buff_head *amsdu, 1412581c25f8SMichal Kazior struct ieee80211_rx_status *status) 1413581c25f8SMichal Kazior { 1414581c25f8SMichal Kazior struct sk_buff *msdu; 1415581c25f8SMichal Kazior 1416581c25f8SMichal Kazior while ((msdu = __skb_dequeue(amsdu))) { 1417581c25f8SMichal Kazior /* Setup per-MSDU flags */ 1418581c25f8SMichal Kazior if (skb_queue_empty(amsdu)) 1419581c25f8SMichal Kazior status->flag &= ~RX_FLAG_AMSDU_MORE; 1420581c25f8SMichal Kazior else 1421581c25f8SMichal Kazior status->flag |= RX_FLAG_AMSDU_MORE; 1422581c25f8SMichal Kazior 1423581c25f8SMichal Kazior ath10k_process_rx(ar, status, msdu); 1424581c25f8SMichal Kazior } 1425581c25f8SMichal Kazior } 1426581c25f8SMichal Kazior 14279aa505d2SMichal Kazior static int ath10k_unchain_msdu(struct sk_buff_head *amsdu) 1428bfa35368SBen Greear { 14299aa505d2SMichal Kazior struct sk_buff *skb, *first; 1430bfa35368SBen Greear int space; 1431bfa35368SBen Greear int total_len = 0; 1432bfa35368SBen Greear 1433bfa35368SBen Greear /* TODO: Might could optimize this by using 1434bfa35368SBen Greear * skb_try_coalesce or similar method to 1435bfa35368SBen Greear * decrease copying, or maybe get mac80211 to 1436bfa35368SBen Greear * provide a way to just receive a list of 1437bfa35368SBen Greear * skb? 1438bfa35368SBen Greear */ 1439bfa35368SBen Greear 14409aa505d2SMichal Kazior first = __skb_dequeue(amsdu); 1441bfa35368SBen Greear 1442bfa35368SBen Greear /* Allocate total length all at once. */ 14439aa505d2SMichal Kazior skb_queue_walk(amsdu, skb) 14449aa505d2SMichal Kazior total_len += skb->len; 1445bfa35368SBen Greear 14469aa505d2SMichal Kazior space = total_len - skb_tailroom(first); 1447bfa35368SBen Greear if ((space > 0) && 14489aa505d2SMichal Kazior (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) { 1449bfa35368SBen Greear /* TODO: bump some rx-oom error stat */ 1450bfa35368SBen Greear /* put it back together so we can free the 1451bfa35368SBen Greear * whole list at once. 1452bfa35368SBen Greear */ 14539aa505d2SMichal Kazior __skb_queue_head(amsdu, first); 1454bfa35368SBen Greear return -1; 1455bfa35368SBen Greear } 1456bfa35368SBen Greear 1457bfa35368SBen Greear /* Walk list again, copying contents into 1458bfa35368SBen Greear * msdu_head 1459bfa35368SBen Greear */ 14609aa505d2SMichal Kazior while ((skb = __skb_dequeue(amsdu))) { 14619aa505d2SMichal Kazior skb_copy_from_linear_data(skb, skb_put(first, skb->len), 14629aa505d2SMichal Kazior skb->len); 14639aa505d2SMichal Kazior dev_kfree_skb_any(skb); 1464bfa35368SBen Greear } 1465bfa35368SBen Greear 14669aa505d2SMichal Kazior __skb_queue_head(amsdu, first); 1467bfa35368SBen Greear return 0; 1468bfa35368SBen Greear } 1469bfa35368SBen Greear 1470581c25f8SMichal Kazior static void ath10k_htt_rx_h_unchain(struct ath10k *ar, 14717543d116SMohammed Shafi Shajakhan struct sk_buff_head *amsdu) 14722acc4eb2SJanusz Dziedzic { 1473581c25f8SMichal Kazior struct sk_buff *first; 1474581c25f8SMichal Kazior struct htt_rx_desc *rxd; 1475581c25f8SMichal Kazior enum rx_msdu_decap_format decap; 14767aa7a72aSMichal Kazior 1477581c25f8SMichal Kazior first = skb_peek(amsdu); 1478581c25f8SMichal Kazior rxd = (void *)first->data - sizeof(*rxd); 14791f5dbfbbSPeter Oh decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1), 1480581c25f8SMichal Kazior RX_MSDU_START_INFO1_DECAP_FORMAT); 1481581c25f8SMichal Kazior 1482581c25f8SMichal Kazior /* FIXME: Current unchaining logic can only handle simple case of raw 1483581c25f8SMichal Kazior * msdu chaining. If decapping is other than raw the chaining may be 1484581c25f8SMichal Kazior * more complex and this isn't handled by the current code. Don't even 1485581c25f8SMichal Kazior * try re-constructing such frames - it'll be pretty much garbage. 1486581c25f8SMichal Kazior */ 1487581c25f8SMichal Kazior if (decap != RX_MSDU_DECAP_RAW || 1488581c25f8SMichal Kazior skb_queue_len(amsdu) != 1 + rxd->frag_info.ring2_more_count) { 1489581c25f8SMichal Kazior __skb_queue_purge(amsdu); 1490581c25f8SMichal Kazior return; 1491581c25f8SMichal Kazior } 1492581c25f8SMichal Kazior 1493581c25f8SMichal Kazior ath10k_unchain_msdu(amsdu); 1494581c25f8SMichal Kazior } 1495581c25f8SMichal Kazior 1496581c25f8SMichal Kazior static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar, 1497581c25f8SMichal Kazior struct sk_buff_head *amsdu, 1498581c25f8SMichal Kazior struct ieee80211_rx_status *rx_status) 1499581c25f8SMichal Kazior { 1500581c25f8SMichal Kazior /* FIXME: It might be a good idea to do some fuzzy-testing to drop 1501581c25f8SMichal Kazior * invalid/dangerous frames. 1502581c25f8SMichal Kazior */ 1503581c25f8SMichal Kazior 1504581c25f8SMichal Kazior if (!rx_status->freq) { 1505581c25f8SMichal Kazior ath10k_warn(ar, "no channel configured; ignoring frame(s)!\n"); 15062acc4eb2SJanusz Dziedzic return false; 15072acc4eb2SJanusz Dziedzic } 15082acc4eb2SJanusz Dziedzic 1509581c25f8SMichal Kazior if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) { 1510581c25f8SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n"); 15112acc4eb2SJanusz Dziedzic return false; 15122acc4eb2SJanusz Dziedzic } 15132acc4eb2SJanusz Dziedzic 15142acc4eb2SJanusz Dziedzic return true; 15152acc4eb2SJanusz Dziedzic } 15162acc4eb2SJanusz Dziedzic 1517581c25f8SMichal Kazior static void ath10k_htt_rx_h_filter(struct ath10k *ar, 1518581c25f8SMichal Kazior struct sk_buff_head *amsdu, 1519581c25f8SMichal Kazior struct ieee80211_rx_status *rx_status) 1520581c25f8SMichal Kazior { 1521581c25f8SMichal Kazior if (skb_queue_empty(amsdu)) 1522581c25f8SMichal Kazior return; 1523581c25f8SMichal Kazior 1524581c25f8SMichal Kazior if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status)) 1525581c25f8SMichal Kazior return; 1526581c25f8SMichal Kazior 1527581c25f8SMichal Kazior __skb_queue_purge(amsdu); 1528581c25f8SMichal Kazior } 1529581c25f8SMichal Kazior 153018235664SRajkumar Manoharan static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) 153118235664SRajkumar Manoharan { 153218235664SRajkumar Manoharan struct ath10k *ar = htt->ar; 1533237e15dfSAshok Raj Nagarajan struct ieee80211_rx_status *rx_status = &htt->rx_status; 153418235664SRajkumar Manoharan struct sk_buff_head amsdu; 15353c97f5deSRajkumar Manoharan int ret, num_msdus; 153618235664SRajkumar Manoharan 153718235664SRajkumar Manoharan __skb_queue_head_init(&amsdu); 153818235664SRajkumar Manoharan 153918235664SRajkumar Manoharan spin_lock_bh(&htt->rx_ring.lock); 154018235664SRajkumar Manoharan if (htt->rx_confused) { 154118235664SRajkumar Manoharan spin_unlock_bh(&htt->rx_ring.lock); 154218235664SRajkumar Manoharan return -EIO; 154318235664SRajkumar Manoharan } 154418235664SRajkumar Manoharan ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu); 154518235664SRajkumar Manoharan spin_unlock_bh(&htt->rx_ring.lock); 154618235664SRajkumar Manoharan 154718235664SRajkumar Manoharan if (ret < 0) { 154818235664SRajkumar Manoharan ath10k_warn(ar, "rx ring became corrupted: %d\n", ret); 154918235664SRajkumar Manoharan __skb_queue_purge(&amsdu); 155018235664SRajkumar Manoharan /* FIXME: It's probably a good idea to reboot the 155118235664SRajkumar Manoharan * device instead of leaving it inoperable. 155218235664SRajkumar Manoharan */ 155318235664SRajkumar Manoharan htt->rx_confused = true; 155418235664SRajkumar Manoharan return ret; 155518235664SRajkumar Manoharan } 155618235664SRajkumar Manoharan 15573c97f5deSRajkumar Manoharan num_msdus = skb_queue_len(&amsdu); 1558237e15dfSAshok Raj Nagarajan ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); 15597543d116SMohammed Shafi Shajakhan 15607543d116SMohammed Shafi Shajakhan /* only for ret = 1 indicates chained msdus */ 15617543d116SMohammed Shafi Shajakhan if (ret > 0) 15627543d116SMohammed Shafi Shajakhan ath10k_htt_rx_h_unchain(ar, &amsdu); 15637543d116SMohammed Shafi Shajakhan 1564237e15dfSAshok Raj Nagarajan ath10k_htt_rx_h_filter(ar, &amsdu, rx_status); 1565237e15dfSAshok Raj Nagarajan ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status); 1566237e15dfSAshok Raj Nagarajan ath10k_htt_rx_h_deliver(ar, &amsdu, rx_status); 156718235664SRajkumar Manoharan 15683c97f5deSRajkumar Manoharan return num_msdus; 156918235664SRajkumar Manoharan } 157018235664SRajkumar Manoharan 15713128b3d8SRajkumar Manoharan static void ath10k_htt_rx_proc_rx_ind(struct ath10k_htt *htt, 15725e3dd157SKalle Valo struct htt_rx_indication *rx) 15735e3dd157SKalle Valo { 15747aa7a72aSMichal Kazior struct ath10k *ar = htt->ar; 15755e3dd157SKalle Valo struct htt_rx_indication_mpdu_range *mpdu_ranges; 15765e3dd157SKalle Valo int num_mpdu_ranges; 157718235664SRajkumar Manoharan int i, mpdu_count = 0; 15785e3dd157SKalle Valo 15795e3dd157SKalle Valo num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), 15805e3dd157SKalle Valo HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); 15815e3dd157SKalle Valo mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx); 15825e3dd157SKalle Valo 15837aa7a72aSMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ", 15845e3dd157SKalle Valo rx, sizeof(*rx) + 15855e3dd157SKalle Valo (sizeof(struct htt_rx_indication_mpdu_range) * 15865e3dd157SKalle Valo num_mpdu_ranges)); 15875e3dd157SKalle Valo 1588d540690dSMichal Kazior for (i = 0; i < num_mpdu_ranges; i++) 1589d540690dSMichal Kazior mpdu_count += mpdu_ranges[i].mpdu_count; 1590d540690dSMichal Kazior 15913128b3d8SRajkumar Manoharan atomic_add(mpdu_count, &htt->num_mpdus_ready); 15925e3dd157SKalle Valo } 15935e3dd157SKalle Valo 159459465fe4SRajkumar Manoharan static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, 15956c5151a9SMichal Kazior struct sk_buff *skb) 15966c5151a9SMichal Kazior { 15976c5151a9SMichal Kazior struct ath10k_htt *htt = &ar->htt; 15986c5151a9SMichal Kazior struct htt_resp *resp = (struct htt_resp *)skb->data; 15996c5151a9SMichal Kazior struct htt_tx_done tx_done = {}; 16006c5151a9SMichal Kazior int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS); 16016c5151a9SMichal Kazior __le16 msdu_id; 16026c5151a9SMichal Kazior int i; 16036c5151a9SMichal Kazior 16046c5151a9SMichal Kazior switch (status) { 16056c5151a9SMichal Kazior case HTT_DATA_TX_STATUS_NO_ACK: 160659465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_NOACK; 16076c5151a9SMichal Kazior break; 16086c5151a9SMichal Kazior case HTT_DATA_TX_STATUS_OK: 160959465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_ACK; 16106c5151a9SMichal Kazior break; 16116c5151a9SMichal Kazior case HTT_DATA_TX_STATUS_DISCARD: 16126c5151a9SMichal Kazior case HTT_DATA_TX_STATUS_POSTPONE: 16136c5151a9SMichal Kazior case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL: 161459465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 16156c5151a9SMichal Kazior break; 16166c5151a9SMichal Kazior default: 16177aa7a72aSMichal Kazior ath10k_warn(ar, "unhandled tx completion status %d\n", status); 161859465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 16196c5151a9SMichal Kazior break; 16206c5151a9SMichal Kazior } 16216c5151a9SMichal Kazior 16227aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n", 16236c5151a9SMichal Kazior resp->data_tx_completion.num_msdus); 16246c5151a9SMichal Kazior 16256c5151a9SMichal Kazior for (i = 0; i < resp->data_tx_completion.num_msdus; i++) { 16266c5151a9SMichal Kazior msdu_id = resp->data_tx_completion.msdus[i]; 16276c5151a9SMichal Kazior tx_done.msdu_id = __le16_to_cpu(msdu_id); 162859465fe4SRajkumar Manoharan 162959465fe4SRajkumar Manoharan /* kfifo_put: In practice firmware shouldn't fire off per-CE 163059465fe4SRajkumar Manoharan * interrupt and main interrupt (MSI/-X range case) for the same 163159465fe4SRajkumar Manoharan * HTC service so it should be safe to use kfifo_put w/o lock. 163259465fe4SRajkumar Manoharan * 163359465fe4SRajkumar Manoharan * From kfifo_put() documentation: 163459465fe4SRajkumar Manoharan * Note that with only one concurrent reader and one concurrent 163559465fe4SRajkumar Manoharan * writer, you don't need extra locking to use these macro. 163659465fe4SRajkumar Manoharan */ 163759465fe4SRajkumar Manoharan if (!kfifo_put(&htt->txdone_fifo, tx_done)) { 163859465fe4SRajkumar Manoharan ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n", 163959465fe4SRajkumar Manoharan tx_done.msdu_id, tx_done.status); 16406c5151a9SMichal Kazior ath10k_txrx_tx_unref(htt, &tx_done); 16416c5151a9SMichal Kazior } 16426c5151a9SMichal Kazior } 164359465fe4SRajkumar Manoharan } 16446c5151a9SMichal Kazior 1645aa5b4fbcSMichal Kazior static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp) 1646aa5b4fbcSMichal Kazior { 1647aa5b4fbcSMichal Kazior struct htt_rx_addba *ev = &resp->rx_addba; 1648aa5b4fbcSMichal Kazior struct ath10k_peer *peer; 1649aa5b4fbcSMichal Kazior struct ath10k_vif *arvif; 1650aa5b4fbcSMichal Kazior u16 info0, tid, peer_id; 1651aa5b4fbcSMichal Kazior 1652aa5b4fbcSMichal Kazior info0 = __le16_to_cpu(ev->info0); 1653aa5b4fbcSMichal Kazior tid = MS(info0, HTT_RX_BA_INFO0_TID); 1654aa5b4fbcSMichal Kazior peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 1655aa5b4fbcSMichal Kazior 16567aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 1657aa5b4fbcSMichal Kazior "htt rx addba tid %hu peer_id %hu size %hhu\n", 1658aa5b4fbcSMichal Kazior tid, peer_id, ev->window_size); 1659aa5b4fbcSMichal Kazior 1660aa5b4fbcSMichal Kazior spin_lock_bh(&ar->data_lock); 1661aa5b4fbcSMichal Kazior peer = ath10k_peer_find_by_id(ar, peer_id); 1662aa5b4fbcSMichal Kazior if (!peer) { 16637aa7a72aSMichal Kazior ath10k_warn(ar, "received addba event for invalid peer_id: %hu\n", 1664aa5b4fbcSMichal Kazior peer_id); 1665aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1666aa5b4fbcSMichal Kazior return; 1667aa5b4fbcSMichal Kazior } 1668aa5b4fbcSMichal Kazior 1669aa5b4fbcSMichal Kazior arvif = ath10k_get_arvif(ar, peer->vdev_id); 1670aa5b4fbcSMichal Kazior if (!arvif) { 16717aa7a72aSMichal Kazior ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 1672aa5b4fbcSMichal Kazior peer->vdev_id); 1673aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1674aa5b4fbcSMichal Kazior return; 1675aa5b4fbcSMichal Kazior } 1676aa5b4fbcSMichal Kazior 16777aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 1678aa5b4fbcSMichal Kazior "htt rx start rx ba session sta %pM tid %hu size %hhu\n", 1679aa5b4fbcSMichal Kazior peer->addr, tid, ev->window_size); 1680aa5b4fbcSMichal Kazior 1681aa5b4fbcSMichal Kazior ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid); 1682aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1683aa5b4fbcSMichal Kazior } 1684aa5b4fbcSMichal Kazior 1685aa5b4fbcSMichal Kazior static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp) 1686aa5b4fbcSMichal Kazior { 1687aa5b4fbcSMichal Kazior struct htt_rx_delba *ev = &resp->rx_delba; 1688aa5b4fbcSMichal Kazior struct ath10k_peer *peer; 1689aa5b4fbcSMichal Kazior struct ath10k_vif *arvif; 1690aa5b4fbcSMichal Kazior u16 info0, tid, peer_id; 1691aa5b4fbcSMichal Kazior 1692aa5b4fbcSMichal Kazior info0 = __le16_to_cpu(ev->info0); 1693aa5b4fbcSMichal Kazior tid = MS(info0, HTT_RX_BA_INFO0_TID); 1694aa5b4fbcSMichal Kazior peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); 1695aa5b4fbcSMichal Kazior 16967aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 1697aa5b4fbcSMichal Kazior "htt rx delba tid %hu peer_id %hu\n", 1698aa5b4fbcSMichal Kazior tid, peer_id); 1699aa5b4fbcSMichal Kazior 1700aa5b4fbcSMichal Kazior spin_lock_bh(&ar->data_lock); 1701aa5b4fbcSMichal Kazior peer = ath10k_peer_find_by_id(ar, peer_id); 1702aa5b4fbcSMichal Kazior if (!peer) { 17037aa7a72aSMichal Kazior ath10k_warn(ar, "received addba event for invalid peer_id: %hu\n", 1704aa5b4fbcSMichal Kazior peer_id); 1705aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1706aa5b4fbcSMichal Kazior return; 1707aa5b4fbcSMichal Kazior } 1708aa5b4fbcSMichal Kazior 1709aa5b4fbcSMichal Kazior arvif = ath10k_get_arvif(ar, peer->vdev_id); 1710aa5b4fbcSMichal Kazior if (!arvif) { 17117aa7a72aSMichal Kazior ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", 1712aa5b4fbcSMichal Kazior peer->vdev_id); 1713aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1714aa5b4fbcSMichal Kazior return; 1715aa5b4fbcSMichal Kazior } 1716aa5b4fbcSMichal Kazior 17177aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 1718aa5b4fbcSMichal Kazior "htt rx stop rx ba session sta %pM tid %hu\n", 1719aa5b4fbcSMichal Kazior peer->addr, tid); 1720aa5b4fbcSMichal Kazior 1721aa5b4fbcSMichal Kazior ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid); 1722aa5b4fbcSMichal Kazior spin_unlock_bh(&ar->data_lock); 1723aa5b4fbcSMichal Kazior } 1724aa5b4fbcSMichal Kazior 1725c545070eSMichal Kazior static int ath10k_htt_rx_extract_amsdu(struct sk_buff_head *list, 1726c545070eSMichal Kazior struct sk_buff_head *amsdu) 1727c545070eSMichal Kazior { 1728c545070eSMichal Kazior struct sk_buff *msdu; 1729c545070eSMichal Kazior struct htt_rx_desc *rxd; 1730c545070eSMichal Kazior 1731c545070eSMichal Kazior if (skb_queue_empty(list)) 1732c545070eSMichal Kazior return -ENOBUFS; 1733c545070eSMichal Kazior 1734c545070eSMichal Kazior if (WARN_ON(!skb_queue_empty(amsdu))) 1735c545070eSMichal Kazior return -EINVAL; 1736c545070eSMichal Kazior 1737c545070eSMichal Kazior while ((msdu = __skb_dequeue(list))) { 1738c545070eSMichal Kazior __skb_queue_tail(amsdu, msdu); 1739c545070eSMichal Kazior 1740c545070eSMichal Kazior rxd = (void *)msdu->data - sizeof(*rxd); 17411f5dbfbbSPeter Oh if (rxd->msdu_end.common.info0 & 1742c545070eSMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)) 1743c545070eSMichal Kazior break; 1744c545070eSMichal Kazior } 1745c545070eSMichal Kazior 1746c545070eSMichal Kazior msdu = skb_peek_tail(amsdu); 1747c545070eSMichal Kazior rxd = (void *)msdu->data - sizeof(*rxd); 17481f5dbfbbSPeter Oh if (!(rxd->msdu_end.common.info0 & 1749c545070eSMichal Kazior __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) { 1750c545070eSMichal Kazior skb_queue_splice_init(amsdu, list); 1751c545070eSMichal Kazior return -EAGAIN; 1752c545070eSMichal Kazior } 1753c545070eSMichal Kazior 1754c545070eSMichal Kazior return 0; 1755c545070eSMichal Kazior } 1756c545070eSMichal Kazior 1757c545070eSMichal Kazior static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, 1758c545070eSMichal Kazior struct sk_buff *skb) 1759c545070eSMichal Kazior { 1760c545070eSMichal Kazior struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 1761c545070eSMichal Kazior 1762c545070eSMichal Kazior if (!ieee80211_has_protected(hdr->frame_control)) 1763c545070eSMichal Kazior return; 1764c545070eSMichal Kazior 1765c545070eSMichal Kazior /* Offloaded frames are already decrypted but firmware insists they are 1766c545070eSMichal Kazior * protected in the 802.11 header. Strip the flag. Otherwise mac80211 1767c545070eSMichal Kazior * will drop the frame. 1768c545070eSMichal Kazior */ 1769c545070eSMichal Kazior 1770c545070eSMichal Kazior hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1771c545070eSMichal Kazior status->flag |= RX_FLAG_DECRYPTED | 1772c545070eSMichal Kazior RX_FLAG_IV_STRIPPED | 1773c545070eSMichal Kazior RX_FLAG_MMIC_STRIPPED; 1774c545070eSMichal Kazior } 1775c545070eSMichal Kazior 17763c97f5deSRajkumar Manoharan static int ath10k_htt_rx_h_rx_offload(struct ath10k *ar, 1777c545070eSMichal Kazior struct sk_buff_head *list) 1778c545070eSMichal Kazior { 1779c545070eSMichal Kazior struct ath10k_htt *htt = &ar->htt; 1780c545070eSMichal Kazior struct ieee80211_rx_status *status = &htt->rx_status; 1781c545070eSMichal Kazior struct htt_rx_offload_msdu *rx; 1782c545070eSMichal Kazior struct sk_buff *msdu; 1783c545070eSMichal Kazior size_t offset; 17843c97f5deSRajkumar Manoharan int num_msdu = 0; 1785c545070eSMichal Kazior 1786c545070eSMichal Kazior while ((msdu = __skb_dequeue(list))) { 1787c545070eSMichal Kazior /* Offloaded frames don't have Rx descriptor. Instead they have 1788c545070eSMichal Kazior * a short meta information header. 1789c545070eSMichal Kazior */ 1790c545070eSMichal Kazior 1791c545070eSMichal Kazior rx = (void *)msdu->data; 1792c545070eSMichal Kazior 1793c545070eSMichal Kazior skb_put(msdu, sizeof(*rx)); 1794c545070eSMichal Kazior skb_pull(msdu, sizeof(*rx)); 1795c545070eSMichal Kazior 1796c545070eSMichal Kazior if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) { 1797c545070eSMichal Kazior ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n"); 1798c545070eSMichal Kazior dev_kfree_skb_any(msdu); 1799c545070eSMichal Kazior continue; 1800c545070eSMichal Kazior } 1801c545070eSMichal Kazior 1802c545070eSMichal Kazior skb_put(msdu, __le16_to_cpu(rx->msdu_len)); 1803c545070eSMichal Kazior 1804c545070eSMichal Kazior /* Offloaded rx header length isn't multiple of 2 nor 4 so the 1805c545070eSMichal Kazior * actual payload is unaligned. Align the frame. Otherwise 1806c545070eSMichal Kazior * mac80211 complains. This shouldn't reduce performance much 1807c545070eSMichal Kazior * because these offloaded frames are rare. 1808c545070eSMichal Kazior */ 1809c545070eSMichal Kazior offset = 4 - ((unsigned long)msdu->data & 3); 1810c545070eSMichal Kazior skb_put(msdu, offset); 1811c545070eSMichal Kazior memmove(msdu->data + offset, msdu->data, msdu->len); 1812c545070eSMichal Kazior skb_pull(msdu, offset); 1813c545070eSMichal Kazior 1814c545070eSMichal Kazior /* FIXME: The frame is NWifi. Re-construct QoS Control 1815c545070eSMichal Kazior * if possible later. 1816c545070eSMichal Kazior */ 1817c545070eSMichal Kazior 1818c545070eSMichal Kazior memset(status, 0, sizeof(*status)); 1819c545070eSMichal Kazior status->flag |= RX_FLAG_NO_SIGNAL_VAL; 1820c545070eSMichal Kazior 1821c545070eSMichal Kazior ath10k_htt_rx_h_rx_offload_prot(status, msdu); 1822500ff9f9SMichal Kazior ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); 1823c545070eSMichal Kazior ath10k_process_rx(ar, status, msdu); 18243c97f5deSRajkumar Manoharan num_msdu++; 1825c545070eSMichal Kazior } 18263c97f5deSRajkumar Manoharan return num_msdu; 1827c545070eSMichal Kazior } 1828c545070eSMichal Kazior 18293c97f5deSRajkumar Manoharan static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) 1830c545070eSMichal Kazior { 1831c545070eSMichal Kazior struct ath10k_htt *htt = &ar->htt; 1832c545070eSMichal Kazior struct htt_resp *resp = (void *)skb->data; 1833c545070eSMichal Kazior struct ieee80211_rx_status *status = &htt->rx_status; 1834c545070eSMichal Kazior struct sk_buff_head list; 1835c545070eSMichal Kazior struct sk_buff_head amsdu; 1836c545070eSMichal Kazior u16 peer_id; 1837c545070eSMichal Kazior u16 msdu_count; 1838c545070eSMichal Kazior u8 vdev_id; 1839c545070eSMichal Kazior u8 tid; 1840c545070eSMichal Kazior bool offload; 1841c545070eSMichal Kazior bool frag; 18423c97f5deSRajkumar Manoharan int ret, num_msdus = 0; 1843c545070eSMichal Kazior 1844c545070eSMichal Kazior lockdep_assert_held(&htt->rx_ring.lock); 1845c545070eSMichal Kazior 1846c545070eSMichal Kazior if (htt->rx_confused) 18473c97f5deSRajkumar Manoharan return -EIO; 1848c545070eSMichal Kazior 1849c545070eSMichal Kazior skb_pull(skb, sizeof(resp->hdr)); 1850c545070eSMichal Kazior skb_pull(skb, sizeof(resp->rx_in_ord_ind)); 1851c545070eSMichal Kazior 1852c545070eSMichal Kazior peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id); 1853c545070eSMichal Kazior msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count); 1854c545070eSMichal Kazior vdev_id = resp->rx_in_ord_ind.vdev_id; 1855c545070eSMichal Kazior tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID); 1856c545070eSMichal Kazior offload = !!(resp->rx_in_ord_ind.info & 1857c545070eSMichal Kazior HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); 1858c545070eSMichal Kazior frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK); 1859c545070eSMichal Kazior 1860c545070eSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 1861c545070eSMichal Kazior "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n", 1862c545070eSMichal Kazior vdev_id, peer_id, tid, offload, frag, msdu_count); 1863c545070eSMichal Kazior 1864c545070eSMichal Kazior if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs)) { 1865c545070eSMichal Kazior ath10k_warn(ar, "dropping invalid in order rx indication\n"); 18663c97f5deSRajkumar Manoharan return -EINVAL; 1867c545070eSMichal Kazior } 1868c545070eSMichal Kazior 1869c545070eSMichal Kazior /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later 1870c545070eSMichal Kazior * extracted and processed. 1871c545070eSMichal Kazior */ 1872c545070eSMichal Kazior __skb_queue_head_init(&list); 1873c545070eSMichal Kazior ret = ath10k_htt_rx_pop_paddr_list(htt, &resp->rx_in_ord_ind, &list); 1874c545070eSMichal Kazior if (ret < 0) { 1875c545070eSMichal Kazior ath10k_warn(ar, "failed to pop paddr list: %d\n", ret); 1876c545070eSMichal Kazior htt->rx_confused = true; 18773c97f5deSRajkumar Manoharan return -EIO; 1878c545070eSMichal Kazior } 1879c545070eSMichal Kazior 1880c545070eSMichal Kazior /* Offloaded frames are very different and need to be handled 1881c545070eSMichal Kazior * separately. 1882c545070eSMichal Kazior */ 1883c545070eSMichal Kazior if (offload) 18843c97f5deSRajkumar Manoharan num_msdus = ath10k_htt_rx_h_rx_offload(ar, &list); 1885c545070eSMichal Kazior 1886c545070eSMichal Kazior while (!skb_queue_empty(&list)) { 1887c545070eSMichal Kazior __skb_queue_head_init(&amsdu); 1888c545070eSMichal Kazior ret = ath10k_htt_rx_extract_amsdu(&list, &amsdu); 1889c545070eSMichal Kazior switch (ret) { 1890c545070eSMichal Kazior case 0: 1891c545070eSMichal Kazior /* Note: The in-order indication may report interleaved 1892c545070eSMichal Kazior * frames from different PPDUs meaning reported rx rate 1893c545070eSMichal Kazior * to mac80211 isn't accurate/reliable. It's still 1894c545070eSMichal Kazior * better to report something than nothing though. This 1895c545070eSMichal Kazior * should still give an idea about rx rate to the user. 1896c545070eSMichal Kazior */ 18973c97f5deSRajkumar Manoharan num_msdus += skb_queue_len(&amsdu); 1898500ff9f9SMichal Kazior ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); 1899c545070eSMichal Kazior ath10k_htt_rx_h_filter(ar, &amsdu, status); 1900c545070eSMichal Kazior ath10k_htt_rx_h_mpdu(ar, &amsdu, status); 1901c545070eSMichal Kazior ath10k_htt_rx_h_deliver(ar, &amsdu, status); 1902c545070eSMichal Kazior break; 1903c545070eSMichal Kazior case -EAGAIN: 1904c545070eSMichal Kazior /* fall through */ 1905c545070eSMichal Kazior default: 1906c545070eSMichal Kazior /* Should not happen. */ 1907c545070eSMichal Kazior ath10k_warn(ar, "failed to extract amsdu: %d\n", ret); 1908c545070eSMichal Kazior htt->rx_confused = true; 1909c545070eSMichal Kazior __skb_queue_purge(&list); 19103c97f5deSRajkumar Manoharan return -EIO; 1911c545070eSMichal Kazior } 1912c545070eSMichal Kazior } 19133c97f5deSRajkumar Manoharan return num_msdus; 1914c545070eSMichal Kazior } 1915c545070eSMichal Kazior 1916839ae637SMichal Kazior static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, 1917839ae637SMichal Kazior const __le32 *resp_ids, 1918839ae637SMichal Kazior int num_resp_ids) 1919839ae637SMichal Kazior { 1920839ae637SMichal Kazior int i; 1921839ae637SMichal Kazior u32 resp_id; 1922839ae637SMichal Kazior 1923839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n", 1924839ae637SMichal Kazior num_resp_ids); 1925839ae637SMichal Kazior 1926839ae637SMichal Kazior for (i = 0; i < num_resp_ids; i++) { 1927839ae637SMichal Kazior resp_id = le32_to_cpu(resp_ids[i]); 1928839ae637SMichal Kazior 1929839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n", 1930839ae637SMichal Kazior resp_id); 1931839ae637SMichal Kazior 1932839ae637SMichal Kazior /* TODO: free resp_id */ 1933839ae637SMichal Kazior } 1934839ae637SMichal Kazior } 1935839ae637SMichal Kazior 1936839ae637SMichal Kazior static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb) 1937839ae637SMichal Kazior { 1938426e10eaSMichal Kazior struct ieee80211_hw *hw = ar->hw; 1939426e10eaSMichal Kazior struct ieee80211_txq *txq; 1940839ae637SMichal Kazior struct htt_resp *resp = (struct htt_resp *)skb->data; 1941839ae637SMichal Kazior struct htt_tx_fetch_record *record; 1942839ae637SMichal Kazior size_t len; 1943839ae637SMichal Kazior size_t max_num_bytes; 1944839ae637SMichal Kazior size_t max_num_msdus; 1945426e10eaSMichal Kazior size_t num_bytes; 1946426e10eaSMichal Kazior size_t num_msdus; 1947839ae637SMichal Kazior const __le32 *resp_ids; 1948839ae637SMichal Kazior u16 num_records; 1949839ae637SMichal Kazior u16 num_resp_ids; 1950839ae637SMichal Kazior u16 peer_id; 1951839ae637SMichal Kazior u8 tid; 1952426e10eaSMichal Kazior int ret; 1953839ae637SMichal Kazior int i; 1954839ae637SMichal Kazior 1955839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n"); 1956839ae637SMichal Kazior 1957839ae637SMichal Kazior len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind); 1958839ae637SMichal Kazior if (unlikely(skb->len < len)) { 1959839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n"); 1960839ae637SMichal Kazior return; 1961839ae637SMichal Kazior } 1962839ae637SMichal Kazior 1963839ae637SMichal Kazior num_records = le16_to_cpu(resp->tx_fetch_ind.num_records); 1964839ae637SMichal Kazior num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids); 1965839ae637SMichal Kazior 1966839ae637SMichal Kazior len += sizeof(resp->tx_fetch_ind.records[0]) * num_records; 1967839ae637SMichal Kazior len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids; 1968839ae637SMichal Kazior 1969839ae637SMichal Kazior if (unlikely(skb->len < len)) { 1970839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n"); 1971839ae637SMichal Kazior return; 1972839ae637SMichal Kazior } 1973839ae637SMichal Kazior 1974839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %hu num resps %hu seq %hu\n", 1975839ae637SMichal Kazior num_records, num_resp_ids, 1976839ae637SMichal Kazior le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num)); 1977839ae637SMichal Kazior 1978426e10eaSMichal Kazior if (!ar->htt.tx_q_state.enabled) { 1979426e10eaSMichal Kazior ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n"); 1980426e10eaSMichal Kazior return; 1981426e10eaSMichal Kazior } 1982426e10eaSMichal Kazior 1983426e10eaSMichal Kazior if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) { 1984426e10eaSMichal Kazior ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n"); 1985426e10eaSMichal Kazior return; 1986426e10eaSMichal Kazior } 1987426e10eaSMichal Kazior 1988426e10eaSMichal Kazior rcu_read_lock(); 1989839ae637SMichal Kazior 1990839ae637SMichal Kazior for (i = 0; i < num_records; i++) { 1991839ae637SMichal Kazior record = &resp->tx_fetch_ind.records[i]; 1992839ae637SMichal Kazior peer_id = MS(le16_to_cpu(record->info), 1993839ae637SMichal Kazior HTT_TX_FETCH_RECORD_INFO_PEER_ID); 1994839ae637SMichal Kazior tid = MS(le16_to_cpu(record->info), 1995839ae637SMichal Kazior HTT_TX_FETCH_RECORD_INFO_TID); 1996839ae637SMichal Kazior max_num_msdus = le16_to_cpu(record->num_msdus); 1997839ae637SMichal Kazior max_num_bytes = le32_to_cpu(record->num_bytes); 1998839ae637SMichal Kazior 1999839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %hu tid %hhu msdus %zu bytes %zu\n", 2000839ae637SMichal Kazior i, peer_id, tid, max_num_msdus, max_num_bytes); 2001839ae637SMichal Kazior 2002839ae637SMichal Kazior if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 2003839ae637SMichal Kazior unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 2004839ae637SMichal Kazior ath10k_warn(ar, "received out of range peer_id %hu tid %hhu\n", 2005839ae637SMichal Kazior peer_id, tid); 2006839ae637SMichal Kazior continue; 2007839ae637SMichal Kazior } 2008839ae637SMichal Kazior 2009426e10eaSMichal Kazior spin_lock_bh(&ar->data_lock); 2010426e10eaSMichal Kazior txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 2011426e10eaSMichal Kazior spin_unlock_bh(&ar->data_lock); 2012426e10eaSMichal Kazior 2013426e10eaSMichal Kazior /* It is okay to release the lock and use txq because RCU read 2014426e10eaSMichal Kazior * lock is held. 2015426e10eaSMichal Kazior */ 2016426e10eaSMichal Kazior 2017426e10eaSMichal Kazior if (unlikely(!txq)) { 2018426e10eaSMichal Kazior ath10k_warn(ar, "failed to lookup txq for peer_id %hu tid %hhu\n", 2019426e10eaSMichal Kazior peer_id, tid); 2020426e10eaSMichal Kazior continue; 2021839ae637SMichal Kazior } 2022839ae637SMichal Kazior 2023426e10eaSMichal Kazior num_msdus = 0; 2024426e10eaSMichal Kazior num_bytes = 0; 2025426e10eaSMichal Kazior 2026426e10eaSMichal Kazior while (num_msdus < max_num_msdus && 2027426e10eaSMichal Kazior num_bytes < max_num_bytes) { 2028426e10eaSMichal Kazior ret = ath10k_mac_tx_push_txq(hw, txq); 2029426e10eaSMichal Kazior if (ret < 0) 2030426e10eaSMichal Kazior break; 2031426e10eaSMichal Kazior 2032426e10eaSMichal Kazior num_msdus++; 2033426e10eaSMichal Kazior num_bytes += ret; 2034426e10eaSMichal Kazior } 2035426e10eaSMichal Kazior 2036426e10eaSMichal Kazior record->num_msdus = cpu_to_le16(num_msdus); 2037426e10eaSMichal Kazior record->num_bytes = cpu_to_le32(num_bytes); 2038426e10eaSMichal Kazior 2039426e10eaSMichal Kazior ath10k_htt_tx_txq_recalc(hw, txq); 2040426e10eaSMichal Kazior } 2041426e10eaSMichal Kazior 2042426e10eaSMichal Kazior rcu_read_unlock(); 2043426e10eaSMichal Kazior 2044839ae637SMichal Kazior resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind); 2045839ae637SMichal Kazior ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids); 2046839ae637SMichal Kazior 2047426e10eaSMichal Kazior ret = ath10k_htt_tx_fetch_resp(ar, 2048426e10eaSMichal Kazior resp->tx_fetch_ind.token, 2049426e10eaSMichal Kazior resp->tx_fetch_ind.fetch_seq_num, 2050426e10eaSMichal Kazior resp->tx_fetch_ind.records, 2051426e10eaSMichal Kazior num_records); 2052426e10eaSMichal Kazior if (unlikely(ret)) { 2053426e10eaSMichal Kazior ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n", 2054426e10eaSMichal Kazior le32_to_cpu(resp->tx_fetch_ind.token), ret); 2055426e10eaSMichal Kazior /* FIXME: request fw restart */ 2056426e10eaSMichal Kazior } 2057426e10eaSMichal Kazior 2058426e10eaSMichal Kazior ath10k_htt_tx_txq_sync(ar); 2059839ae637SMichal Kazior } 2060839ae637SMichal Kazior 2061839ae637SMichal Kazior static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar, 2062839ae637SMichal Kazior struct sk_buff *skb) 2063839ae637SMichal Kazior { 2064839ae637SMichal Kazior const struct htt_resp *resp = (void *)skb->data; 2065839ae637SMichal Kazior size_t len; 2066839ae637SMichal Kazior int num_resp_ids; 2067839ae637SMichal Kazior 2068839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n"); 2069839ae637SMichal Kazior 2070839ae637SMichal Kazior len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm); 2071839ae637SMichal Kazior if (unlikely(skb->len < len)) { 2072839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n"); 2073839ae637SMichal Kazior return; 2074839ae637SMichal Kazior } 2075839ae637SMichal Kazior 2076839ae637SMichal Kazior num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids); 2077839ae637SMichal Kazior len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids; 2078839ae637SMichal Kazior 2079839ae637SMichal Kazior if (unlikely(skb->len < len)) { 2080839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n"); 2081839ae637SMichal Kazior return; 2082839ae637SMichal Kazior } 2083839ae637SMichal Kazior 2084839ae637SMichal Kazior ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, 2085839ae637SMichal Kazior resp->tx_fetch_confirm.resp_ids, 2086839ae637SMichal Kazior num_resp_ids); 2087839ae637SMichal Kazior } 2088839ae637SMichal Kazior 2089839ae637SMichal Kazior static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar, 2090839ae637SMichal Kazior struct sk_buff *skb) 2091839ae637SMichal Kazior { 2092839ae637SMichal Kazior const struct htt_resp *resp = (void *)skb->data; 2093839ae637SMichal Kazior const struct htt_tx_mode_switch_record *record; 2094426e10eaSMichal Kazior struct ieee80211_txq *txq; 2095426e10eaSMichal Kazior struct ath10k_txq *artxq; 2096839ae637SMichal Kazior size_t len; 2097839ae637SMichal Kazior size_t num_records; 2098839ae637SMichal Kazior enum htt_tx_mode_switch_mode mode; 2099839ae637SMichal Kazior bool enable; 2100839ae637SMichal Kazior u16 info0; 2101839ae637SMichal Kazior u16 info1; 2102839ae637SMichal Kazior u16 threshold; 2103839ae637SMichal Kazior u16 peer_id; 2104839ae637SMichal Kazior u8 tid; 2105839ae637SMichal Kazior int i; 2106839ae637SMichal Kazior 2107839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n"); 2108839ae637SMichal Kazior 2109839ae637SMichal Kazior len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind); 2110839ae637SMichal Kazior if (unlikely(skb->len < len)) { 2111839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n"); 2112839ae637SMichal Kazior return; 2113839ae637SMichal Kazior } 2114839ae637SMichal Kazior 2115839ae637SMichal Kazior info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0); 2116839ae637SMichal Kazior info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1); 2117839ae637SMichal Kazior 2118839ae637SMichal Kazior enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE); 2119839ae637SMichal Kazior num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 2120839ae637SMichal Kazior mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE); 2121839ae637SMichal Kazior threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); 2122839ae637SMichal Kazior 2123839ae637SMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 2124839ae637SMichal Kazior "htt rx tx mode switch ind info0 0x%04hx info1 0x%04hx enable %d num records %zd mode %d threshold %hu\n", 2125839ae637SMichal Kazior info0, info1, enable, num_records, mode, threshold); 2126839ae637SMichal Kazior 2127839ae637SMichal Kazior len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records; 2128839ae637SMichal Kazior 2129839ae637SMichal Kazior if (unlikely(skb->len < len)) { 2130839ae637SMichal Kazior ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n"); 2131839ae637SMichal Kazior return; 2132839ae637SMichal Kazior } 2133839ae637SMichal Kazior 2134839ae637SMichal Kazior switch (mode) { 2135839ae637SMichal Kazior case HTT_TX_MODE_SWITCH_PUSH: 2136839ae637SMichal Kazior case HTT_TX_MODE_SWITCH_PUSH_PULL: 2137839ae637SMichal Kazior break; 2138839ae637SMichal Kazior default: 2139839ae637SMichal Kazior ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n", 2140839ae637SMichal Kazior mode); 2141839ae637SMichal Kazior return; 2142839ae637SMichal Kazior } 2143839ae637SMichal Kazior 2144839ae637SMichal Kazior if (!enable) 2145839ae637SMichal Kazior return; 2146839ae637SMichal Kazior 2147426e10eaSMichal Kazior ar->htt.tx_q_state.enabled = enable; 2148426e10eaSMichal Kazior ar->htt.tx_q_state.mode = mode; 2149426e10eaSMichal Kazior ar->htt.tx_q_state.num_push_allowed = threshold; 2150426e10eaSMichal Kazior 2151426e10eaSMichal Kazior rcu_read_lock(); 2152839ae637SMichal Kazior 2153839ae637SMichal Kazior for (i = 0; i < num_records; i++) { 2154839ae637SMichal Kazior record = &resp->tx_mode_switch_ind.records[i]; 2155839ae637SMichal Kazior info0 = le16_to_cpu(record->info0); 2156839ae637SMichal Kazior peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID); 2157839ae637SMichal Kazior tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID); 2158839ae637SMichal Kazior 2159839ae637SMichal Kazior if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || 2160839ae637SMichal Kazior unlikely(tid >= ar->htt.tx_q_state.num_tids)) { 2161839ae637SMichal Kazior ath10k_warn(ar, "received out of range peer_id %hu tid %hhu\n", 2162839ae637SMichal Kazior peer_id, tid); 2163839ae637SMichal Kazior continue; 2164839ae637SMichal Kazior } 2165839ae637SMichal Kazior 2166426e10eaSMichal Kazior spin_lock_bh(&ar->data_lock); 2167426e10eaSMichal Kazior txq = ath10k_mac_txq_lookup(ar, peer_id, tid); 2168426e10eaSMichal Kazior spin_unlock_bh(&ar->data_lock); 2169426e10eaSMichal Kazior 2170426e10eaSMichal Kazior /* It is okay to release the lock and use txq because RCU read 2171426e10eaSMichal Kazior * lock is held. 2172426e10eaSMichal Kazior */ 2173426e10eaSMichal Kazior 2174426e10eaSMichal Kazior if (unlikely(!txq)) { 2175426e10eaSMichal Kazior ath10k_warn(ar, "failed to lookup txq for peer_id %hu tid %hhu\n", 2176426e10eaSMichal Kazior peer_id, tid); 2177426e10eaSMichal Kazior continue; 2178839ae637SMichal Kazior } 2179839ae637SMichal Kazior 2180426e10eaSMichal Kazior spin_lock_bh(&ar->htt.tx_lock); 2181426e10eaSMichal Kazior artxq = (void *)txq->drv_priv; 2182426e10eaSMichal Kazior artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus); 2183426e10eaSMichal Kazior spin_unlock_bh(&ar->htt.tx_lock); 2184426e10eaSMichal Kazior } 2185426e10eaSMichal Kazior 2186426e10eaSMichal Kazior rcu_read_unlock(); 2187426e10eaSMichal Kazior 2188426e10eaSMichal Kazior ath10k_mac_tx_push_pending(ar); 2189839ae637SMichal Kazior } 2190839ae637SMichal Kazior 2191e3a91f87SRajkumar Manoharan void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 2192e3a91f87SRajkumar Manoharan { 2193e3a91f87SRajkumar Manoharan bool release; 2194e3a91f87SRajkumar Manoharan 2195e3a91f87SRajkumar Manoharan release = ath10k_htt_t2h_msg_handler(ar, skb); 2196e3a91f87SRajkumar Manoharan 2197e3a91f87SRajkumar Manoharan /* Free the indication buffer */ 2198e3a91f87SRajkumar Manoharan if (release) 2199e3a91f87SRajkumar Manoharan dev_kfree_skb_any(skb); 2200e3a91f87SRajkumar Manoharan } 2201e3a91f87SRajkumar Manoharan 2202cec17c38SAnilkumar Kolli static inline bool is_valid_legacy_rate(u8 rate) 2203cec17c38SAnilkumar Kolli { 2204cec17c38SAnilkumar Kolli static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, 2205cec17c38SAnilkumar Kolli 18, 24, 36, 48, 54}; 2206cec17c38SAnilkumar Kolli int i; 2207cec17c38SAnilkumar Kolli 2208cec17c38SAnilkumar Kolli for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { 2209cec17c38SAnilkumar Kolli if (rate == legacy_rates[i]) 2210cec17c38SAnilkumar Kolli return true; 2211cec17c38SAnilkumar Kolli } 2212cec17c38SAnilkumar Kolli 2213cec17c38SAnilkumar Kolli return false; 2214cec17c38SAnilkumar Kolli } 2215cec17c38SAnilkumar Kolli 2216cec17c38SAnilkumar Kolli static void 2217cec17c38SAnilkumar Kolli ath10k_update_per_peer_tx_stats(struct ath10k *ar, 2218cec17c38SAnilkumar Kolli struct ieee80211_sta *sta, 2219cec17c38SAnilkumar Kolli struct ath10k_per_peer_tx_stats *peer_stats) 2220cec17c38SAnilkumar Kolli { 2221cec17c38SAnilkumar Kolli struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; 2222cec17c38SAnilkumar Kolli u8 rate = 0, sgi; 2223cec17c38SAnilkumar Kolli struct rate_info txrate; 2224cec17c38SAnilkumar Kolli 2225cec17c38SAnilkumar Kolli lockdep_assert_held(&ar->data_lock); 2226cec17c38SAnilkumar Kolli 2227cec17c38SAnilkumar Kolli txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); 2228cec17c38SAnilkumar Kolli txrate.bw = ATH10K_HW_BW(peer_stats->flags); 2229cec17c38SAnilkumar Kolli txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); 2230cec17c38SAnilkumar Kolli txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); 2231cec17c38SAnilkumar Kolli sgi = ATH10K_HW_GI(peer_stats->flags); 2232cec17c38SAnilkumar Kolli 2233cec17c38SAnilkumar Kolli if (((txrate.flags == WMI_RATE_PREAMBLE_HT) || 2234cec17c38SAnilkumar Kolli (txrate.flags == WMI_RATE_PREAMBLE_VHT)) && txrate.mcs > 9) { 2235cec17c38SAnilkumar Kolli ath10k_warn(ar, "Invalid mcs %hhd peer stats", txrate.mcs); 2236cec17c38SAnilkumar Kolli return; 2237cec17c38SAnilkumar Kolli } 2238cec17c38SAnilkumar Kolli 2239cec17c38SAnilkumar Kolli if (txrate.flags == WMI_RATE_PREAMBLE_CCK || 2240cec17c38SAnilkumar Kolli txrate.flags == WMI_RATE_PREAMBLE_OFDM) { 2241cec17c38SAnilkumar Kolli rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); 2242cec17c38SAnilkumar Kolli 2243cec17c38SAnilkumar Kolli if (!is_valid_legacy_rate(rate)) { 2244cec17c38SAnilkumar Kolli ath10k_warn(ar, "Invalid legacy rate %hhd peer stats", 2245cec17c38SAnilkumar Kolli rate); 2246cec17c38SAnilkumar Kolli return; 2247cec17c38SAnilkumar Kolli } 2248cec17c38SAnilkumar Kolli 2249cec17c38SAnilkumar Kolli /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ 2250cec17c38SAnilkumar Kolli rate *= 10; 2251cec17c38SAnilkumar Kolli if (rate == 60 && txrate.flags == WMI_RATE_PREAMBLE_CCK) 2252cec17c38SAnilkumar Kolli rate = rate - 5; 2253cd591027SMohammed Shafi Shajakhan arsta->txrate.legacy = rate; 2254cec17c38SAnilkumar Kolli } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { 2255cec17c38SAnilkumar Kolli arsta->txrate.flags = RATE_INFO_FLAGS_MCS; 2256cec17c38SAnilkumar Kolli arsta->txrate.mcs = txrate.mcs; 2257cec17c38SAnilkumar Kolli } else { 2258cec17c38SAnilkumar Kolli arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; 2259cec17c38SAnilkumar Kolli arsta->txrate.mcs = txrate.mcs; 2260cec17c38SAnilkumar Kolli } 2261cec17c38SAnilkumar Kolli 2262cec17c38SAnilkumar Kolli if (sgi) 2263cec17c38SAnilkumar Kolli arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 2264cec17c38SAnilkumar Kolli 2265cec17c38SAnilkumar Kolli arsta->txrate.nss = txrate.nss; 2266cec17c38SAnilkumar Kolli arsta->txrate.bw = txrate.bw + RATE_INFO_BW_20; 2267cec17c38SAnilkumar Kolli } 2268cec17c38SAnilkumar Kolli 2269cec17c38SAnilkumar Kolli static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, 2270cec17c38SAnilkumar Kolli struct sk_buff *skb) 2271cec17c38SAnilkumar Kolli { 2272cec17c38SAnilkumar Kolli struct htt_resp *resp = (struct htt_resp *)skb->data; 2273cec17c38SAnilkumar Kolli struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; 2274cec17c38SAnilkumar Kolli struct htt_per_peer_tx_stats_ind *tx_stats; 2275cec17c38SAnilkumar Kolli struct ieee80211_sta *sta; 2276cec17c38SAnilkumar Kolli struct ath10k_peer *peer; 2277cec17c38SAnilkumar Kolli int peer_id, i; 2278cec17c38SAnilkumar Kolli u8 ppdu_len, num_ppdu; 2279cec17c38SAnilkumar Kolli 2280cec17c38SAnilkumar Kolli num_ppdu = resp->peer_tx_stats.num_ppdu; 2281cec17c38SAnilkumar Kolli ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); 2282cec17c38SAnilkumar Kolli 2283cec17c38SAnilkumar Kolli if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { 2284cec17c38SAnilkumar Kolli ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); 2285cec17c38SAnilkumar Kolli return; 2286cec17c38SAnilkumar Kolli } 2287cec17c38SAnilkumar Kolli 2288cec17c38SAnilkumar Kolli tx_stats = (struct htt_per_peer_tx_stats_ind *) 2289cec17c38SAnilkumar Kolli (resp->peer_tx_stats.payload); 2290cec17c38SAnilkumar Kolli peer_id = __le16_to_cpu(tx_stats->peer_id); 2291cec17c38SAnilkumar Kolli 2292cec17c38SAnilkumar Kolli rcu_read_lock(); 2293cec17c38SAnilkumar Kolli spin_lock_bh(&ar->data_lock); 2294cec17c38SAnilkumar Kolli peer = ath10k_peer_find_by_id(ar, peer_id); 2295cec17c38SAnilkumar Kolli if (!peer) { 2296cec17c38SAnilkumar Kolli ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n", 2297cec17c38SAnilkumar Kolli peer_id); 2298cec17c38SAnilkumar Kolli goto out; 2299cec17c38SAnilkumar Kolli } 2300cec17c38SAnilkumar Kolli 2301cec17c38SAnilkumar Kolli sta = peer->sta; 2302cec17c38SAnilkumar Kolli for (i = 0; i < num_ppdu; i++) { 2303cec17c38SAnilkumar Kolli tx_stats = (struct htt_per_peer_tx_stats_ind *) 2304cec17c38SAnilkumar Kolli (resp->peer_tx_stats.payload + i * ppdu_len); 2305cec17c38SAnilkumar Kolli 2306cec17c38SAnilkumar Kolli p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); 2307cec17c38SAnilkumar Kolli p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); 2308cec17c38SAnilkumar Kolli p_tx_stats->failed_bytes = 2309cec17c38SAnilkumar Kolli __le32_to_cpu(tx_stats->failed_bytes); 2310cec17c38SAnilkumar Kolli p_tx_stats->ratecode = tx_stats->ratecode; 2311cec17c38SAnilkumar Kolli p_tx_stats->flags = tx_stats->flags; 2312cec17c38SAnilkumar Kolli p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); 2313cec17c38SAnilkumar Kolli p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); 2314cec17c38SAnilkumar Kolli p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); 2315cec17c38SAnilkumar Kolli 2316cec17c38SAnilkumar Kolli ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); 2317cec17c38SAnilkumar Kolli } 2318cec17c38SAnilkumar Kolli 2319cec17c38SAnilkumar Kolli out: 2320cec17c38SAnilkumar Kolli spin_unlock_bh(&ar->data_lock); 2321cec17c38SAnilkumar Kolli rcu_read_unlock(); 2322cec17c38SAnilkumar Kolli } 2323cec17c38SAnilkumar Kolli 2324e3a91f87SRajkumar Manoharan bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) 23255e3dd157SKalle Valo { 2326edb8236dSMichal Kazior struct ath10k_htt *htt = &ar->htt; 23275e3dd157SKalle Valo struct htt_resp *resp = (struct htt_resp *)skb->data; 23288348db29SRajkumar Manoharan enum htt_t2h_msg_type type; 23295e3dd157SKalle Valo 23305e3dd157SKalle Valo /* confirm alignment */ 23315e3dd157SKalle Valo if (!IS_ALIGNED((unsigned long)skb->data, 4)) 23327aa7a72aSMichal Kazior ath10k_warn(ar, "unaligned htt message, expect trouble\n"); 23335e3dd157SKalle Valo 23347aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n", 23355e3dd157SKalle Valo resp->hdr.msg_type); 23368348db29SRajkumar Manoharan 23378348db29SRajkumar Manoharan if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) { 23388348db29SRajkumar Manoharan ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X", 23398348db29SRajkumar Manoharan resp->hdr.msg_type, ar->htt.t2h_msg_types_max); 2340e3a91f87SRajkumar Manoharan return true; 23418348db29SRajkumar Manoharan } 23428348db29SRajkumar Manoharan type = ar->htt.t2h_msg_types[resp->hdr.msg_type]; 23438348db29SRajkumar Manoharan 23448348db29SRajkumar Manoharan switch (type) { 23455e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_VERSION_CONF: { 23465e3dd157SKalle Valo htt->target_version_major = resp->ver_resp.major; 23475e3dd157SKalle Valo htt->target_version_minor = resp->ver_resp.minor; 23485e3dd157SKalle Valo complete(&htt->target_version_received); 23495e3dd157SKalle Valo break; 23505e3dd157SKalle Valo } 23516c5151a9SMichal Kazior case HTT_T2H_MSG_TYPE_RX_IND: 23523128b3d8SRajkumar Manoharan ath10k_htt_rx_proc_rx_ind(htt, &resp->rx_ind); 23533128b3d8SRajkumar Manoharan break; 23545e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_PEER_MAP: { 23555e3dd157SKalle Valo struct htt_peer_map_event ev = { 23565e3dd157SKalle Valo .vdev_id = resp->peer_map.vdev_id, 23575e3dd157SKalle Valo .peer_id = __le16_to_cpu(resp->peer_map.peer_id), 23585e3dd157SKalle Valo }; 23595e3dd157SKalle Valo memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr)); 23605e3dd157SKalle Valo ath10k_peer_map_event(htt, &ev); 23615e3dd157SKalle Valo break; 23625e3dd157SKalle Valo } 23635e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_PEER_UNMAP: { 23645e3dd157SKalle Valo struct htt_peer_unmap_event ev = { 23655e3dd157SKalle Valo .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id), 23665e3dd157SKalle Valo }; 23675e3dd157SKalle Valo ath10k_peer_unmap_event(htt, &ev); 23685e3dd157SKalle Valo break; 23695e3dd157SKalle Valo } 23705e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: { 23715e3dd157SKalle Valo struct htt_tx_done tx_done = {}; 23725e3dd157SKalle Valo int status = __le32_to_cpu(resp->mgmt_tx_completion.status); 23735e3dd157SKalle Valo 237459465fe4SRajkumar Manoharan tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); 23755e3dd157SKalle Valo 23765e3dd157SKalle Valo switch (status) { 23775e3dd157SKalle Valo case HTT_MGMT_TX_STATUS_OK: 237859465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_ACK; 23795e3dd157SKalle Valo break; 23805e3dd157SKalle Valo case HTT_MGMT_TX_STATUS_RETRY: 238159465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_NOACK; 23825e3dd157SKalle Valo break; 23835e3dd157SKalle Valo case HTT_MGMT_TX_STATUS_DROP: 238459465fe4SRajkumar Manoharan tx_done.status = HTT_TX_COMPL_STATE_DISCARD; 23855e3dd157SKalle Valo break; 23865e3dd157SKalle Valo } 23875e3dd157SKalle Valo 2388cac08552SRajkumar Manoharan status = ath10k_txrx_tx_unref(htt, &tx_done); 2389cac08552SRajkumar Manoharan if (!status) { 2390cac08552SRajkumar Manoharan spin_lock_bh(&htt->tx_lock); 2391cac08552SRajkumar Manoharan ath10k_htt_tx_mgmt_dec_pending(htt); 2392cac08552SRajkumar Manoharan spin_unlock_bh(&htt->tx_lock); 2393cac08552SRajkumar Manoharan } 23945e3dd157SKalle Valo break; 23955e3dd157SKalle Valo } 23966c5151a9SMichal Kazior case HTT_T2H_MSG_TYPE_TX_COMPL_IND: 239759465fe4SRajkumar Manoharan ath10k_htt_rx_tx_compl_ind(htt->ar, skb); 239859465fe4SRajkumar Manoharan break; 23995e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_SEC_IND: { 24005e3dd157SKalle Valo struct ath10k *ar = htt->ar; 24015e3dd157SKalle Valo struct htt_security_indication *ev = &resp->security_indication; 24025e3dd157SKalle Valo 24037aa7a72aSMichal Kazior ath10k_dbg(ar, ATH10K_DBG_HTT, 24045e3dd157SKalle Valo "sec ind peer_id %d unicast %d type %d\n", 24055e3dd157SKalle Valo __le16_to_cpu(ev->peer_id), 24065e3dd157SKalle Valo !!(ev->flags & HTT_SECURITY_IS_UNICAST), 24075e3dd157SKalle Valo MS(ev->flags, HTT_SECURITY_TYPE)); 24085e3dd157SKalle Valo complete(&ar->install_key_done); 24095e3dd157SKalle Valo break; 24105e3dd157SKalle Valo } 24115e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_RX_FRAG_IND: { 24127aa7a72aSMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 24135e3dd157SKalle Valo skb->data, skb->len); 24143c97f5deSRajkumar Manoharan atomic_inc(&htt->num_mpdus_ready); 24155e3dd157SKalle Valo break; 24165e3dd157SKalle Valo } 24175e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_TEST: 24185e3dd157SKalle Valo break; 24195e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_STATS_CONF: 2420d35a6c18SMichal Kazior trace_ath10k_htt_stats(ar, skb->data, skb->len); 2421a9bf0506SKalle Valo break; 2422a9bf0506SKalle Valo case HTT_T2H_MSG_TYPE_TX_INSPECT_IND: 2423708b9bdeSMichal Kazior /* Firmware can return tx frames if it's unable to fully 2424708b9bdeSMichal Kazior * process them and suspects host may be able to fix it. ath10k 2425708b9bdeSMichal Kazior * sends all tx frames as already inspected so this shouldn't 2426708b9bdeSMichal Kazior * happen unless fw has a bug. 2427708b9bdeSMichal Kazior */ 24287aa7a72aSMichal Kazior ath10k_warn(ar, "received an unexpected htt tx inspect event\n"); 2429708b9bdeSMichal Kazior break; 24305e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_RX_ADDBA: 2431aa5b4fbcSMichal Kazior ath10k_htt_rx_addba(ar, resp); 2432aa5b4fbcSMichal Kazior break; 24335e3dd157SKalle Valo case HTT_T2H_MSG_TYPE_RX_DELBA: 2434aa5b4fbcSMichal Kazior ath10k_htt_rx_delba(ar, resp); 2435aa5b4fbcSMichal Kazior break; 2436bfdd7937SRajkumar Manoharan case HTT_T2H_MSG_TYPE_PKTLOG: { 2437bfdd7937SRajkumar Manoharan trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload, 243834293f75SAshok Raj Nagarajan skb->len - 243934293f75SAshok Raj Nagarajan offsetof(struct htt_resp, 244034293f75SAshok Raj Nagarajan pktlog_msg.payload)); 2441bfdd7937SRajkumar Manoharan break; 2442bfdd7937SRajkumar Manoharan } 2443aa5b4fbcSMichal Kazior case HTT_T2H_MSG_TYPE_RX_FLUSH: { 2444aa5b4fbcSMichal Kazior /* Ignore this event because mac80211 takes care of Rx 2445aa5b4fbcSMichal Kazior * aggregation reordering. 2446aa5b4fbcSMichal Kazior */ 2447aa5b4fbcSMichal Kazior break; 2448aa5b4fbcSMichal Kazior } 2449c545070eSMichal Kazior case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: { 24503c97f5deSRajkumar Manoharan __skb_queue_tail(&htt->rx_in_ord_compl_q, skb); 2451e3a91f87SRajkumar Manoharan return false; 2452c545070eSMichal Kazior } 2453c545070eSMichal Kazior case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: 24548348db29SRajkumar Manoharan break; 24552ce9b25cSRajkumar Manoharan case HTT_T2H_MSG_TYPE_CHAN_CHANGE: { 24562ce9b25cSRajkumar Manoharan u32 phymode = __le32_to_cpu(resp->chan_change.phymode); 24572ce9b25cSRajkumar Manoharan u32 freq = __le32_to_cpu(resp->chan_change.freq); 24582ce9b25cSRajkumar Manoharan 24592ce9b25cSRajkumar Manoharan ar->tgt_oper_chan = 24602ce9b25cSRajkumar Manoharan __ieee80211_get_channel(ar->hw->wiphy, freq); 24612ce9b25cSRajkumar Manoharan ath10k_dbg(ar, ATH10K_DBG_HTT, 24622ce9b25cSRajkumar Manoharan "htt chan change freq %u phymode %s\n", 24632ce9b25cSRajkumar Manoharan freq, ath10k_wmi_phymode_str(phymode)); 2464c545070eSMichal Kazior break; 24652ce9b25cSRajkumar Manoharan } 2466ccec9038SDavid Liu case HTT_T2H_MSG_TYPE_AGGR_CONF: 2467ccec9038SDavid Liu break; 2468b2fdbccdSRajkumar Manoharan case HTT_T2H_MSG_TYPE_TX_FETCH_IND: { 2469b2fdbccdSRajkumar Manoharan struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC); 2470b2fdbccdSRajkumar Manoharan 2471b2fdbccdSRajkumar Manoharan if (!tx_fetch_ind) { 2472b2fdbccdSRajkumar Manoharan ath10k_warn(ar, "failed to copy htt tx fetch ind\n"); 2473b2fdbccdSRajkumar Manoharan break; 2474b2fdbccdSRajkumar Manoharan } 2475b2fdbccdSRajkumar Manoharan skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind); 2476b2fdbccdSRajkumar Manoharan break; 2477b2fdbccdSRajkumar Manoharan } 2478df94e702SMichal Kazior case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM: 2479839ae637SMichal Kazior ath10k_htt_rx_tx_fetch_confirm(ar, skb); 2480839ae637SMichal Kazior break; 2481df94e702SMichal Kazior case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: 2482839ae637SMichal Kazior ath10k_htt_rx_tx_mode_switch_ind(ar, skb); 24839b158736SMichal Kazior break; 2484cec17c38SAnilkumar Kolli case HTT_T2H_MSG_TYPE_PEER_STATS: 2485cec17c38SAnilkumar Kolli ath10k_htt_fetch_peer_stats(ar, skb); 2486cec17c38SAnilkumar Kolli break; 24879b158736SMichal Kazior case HTT_T2H_MSG_TYPE_EN_STATS: 24885e3dd157SKalle Valo default: 24892358a544SMichal Kazior ath10k_warn(ar, "htt event (%d) not handled\n", 24905e3dd157SKalle Valo resp->hdr.msg_type); 24917aa7a72aSMichal Kazior ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", 24925e3dd157SKalle Valo skb->data, skb->len); 24935e3dd157SKalle Valo break; 24945e3dd157SKalle Valo }; 2495e3a91f87SRajkumar Manoharan return true; 24965e3dd157SKalle Valo } 24973f0f7ed4SRajkumar Manoharan EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler); 24986c5151a9SMichal Kazior 2499afb0bf7fSVivek Natarajan void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, 2500afb0bf7fSVivek Natarajan struct sk_buff *skb) 2501afb0bf7fSVivek Natarajan { 250253a5c9bcSAshok Raj Nagarajan trace_ath10k_htt_pktlog(ar, skb->data, skb->len); 2503afb0bf7fSVivek Natarajan dev_kfree_skb_any(skb); 2504afb0bf7fSVivek Natarajan } 2505afb0bf7fSVivek Natarajan EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler); 2506afb0bf7fSVivek Natarajan 25073c97f5deSRajkumar Manoharan int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) 25086c5151a9SMichal Kazior { 25093c97f5deSRajkumar Manoharan struct ath10k_htt *htt = &ar->htt; 251059465fe4SRajkumar Manoharan struct htt_tx_done tx_done = {}; 2511426e10eaSMichal Kazior struct sk_buff_head tx_ind_q; 25126c5151a9SMichal Kazior struct sk_buff *skb; 2513d742c969SMichal Kazior unsigned long flags; 25143c97f5deSRajkumar Manoharan int quota = 0, done, num_rx_msdus; 25153c97f5deSRajkumar Manoharan bool resched_napi = false; 25166c5151a9SMichal Kazior 2517426e10eaSMichal Kazior __skb_queue_head_init(&tx_ind_q); 2518da6416caSRajkumar Manoharan 25193c97f5deSRajkumar Manoharan /* Since in-ord-ind can deliver more than 1 A-MSDU in single event, 25203c97f5deSRajkumar Manoharan * process it first to utilize full available quota. 25213c97f5deSRajkumar Manoharan */ 25223c97f5deSRajkumar Manoharan while (quota < budget) { 25233c97f5deSRajkumar Manoharan if (skb_queue_empty(&htt->rx_in_ord_compl_q)) 25243c97f5deSRajkumar Manoharan break; 2525da6416caSRajkumar Manoharan 25263c97f5deSRajkumar Manoharan skb = __skb_dequeue(&htt->rx_in_ord_compl_q); 25273c97f5deSRajkumar Manoharan if (!skb) { 25283c97f5deSRajkumar Manoharan resched_napi = true; 25293c97f5deSRajkumar Manoharan goto exit; 25303c97f5deSRajkumar Manoharan } 25313c97f5deSRajkumar Manoharan 25323c97f5deSRajkumar Manoharan spin_lock_bh(&htt->rx_ring.lock); 25333c97f5deSRajkumar Manoharan num_rx_msdus = ath10k_htt_rx_in_ord_ind(ar, skb); 25343c97f5deSRajkumar Manoharan spin_unlock_bh(&htt->rx_ring.lock); 25353c97f5deSRajkumar Manoharan if (num_rx_msdus < 0) { 25363c97f5deSRajkumar Manoharan resched_napi = true; 25373c97f5deSRajkumar Manoharan goto exit; 25383c97f5deSRajkumar Manoharan } 25393c97f5deSRajkumar Manoharan 25403c97f5deSRajkumar Manoharan dev_kfree_skb_any(skb); 25413c97f5deSRajkumar Manoharan if (num_rx_msdus > 0) 25423c97f5deSRajkumar Manoharan quota += num_rx_msdus; 25433c97f5deSRajkumar Manoharan 25443c97f5deSRajkumar Manoharan if ((quota > ATH10K_NAPI_QUOTA_LIMIT) && 25453c97f5deSRajkumar Manoharan !skb_queue_empty(&htt->rx_in_ord_compl_q)) { 25463c97f5deSRajkumar Manoharan resched_napi = true; 25473c97f5deSRajkumar Manoharan goto exit; 25483c97f5deSRajkumar Manoharan } 25493c97f5deSRajkumar Manoharan } 25503c97f5deSRajkumar Manoharan 25513c97f5deSRajkumar Manoharan while (quota < budget) { 25523c97f5deSRajkumar Manoharan /* no more data to receive */ 25533c97f5deSRajkumar Manoharan if (!atomic_read(&htt->num_mpdus_ready)) 25543c97f5deSRajkumar Manoharan break; 25553c97f5deSRajkumar Manoharan 25563c97f5deSRajkumar Manoharan num_rx_msdus = ath10k_htt_rx_handle_amsdu(htt); 25573c97f5deSRajkumar Manoharan if (num_rx_msdus < 0) { 25583c97f5deSRajkumar Manoharan resched_napi = true; 25593c97f5deSRajkumar Manoharan goto exit; 25603c97f5deSRajkumar Manoharan } 25613c97f5deSRajkumar Manoharan 25623c97f5deSRajkumar Manoharan quota += num_rx_msdus; 25633c97f5deSRajkumar Manoharan atomic_dec(&htt->num_mpdus_ready); 25643c97f5deSRajkumar Manoharan if ((quota > ATH10K_NAPI_QUOTA_LIMIT) && 25653c97f5deSRajkumar Manoharan atomic_read(&htt->num_mpdus_ready)) { 25663c97f5deSRajkumar Manoharan resched_napi = true; 25673c97f5deSRajkumar Manoharan goto exit; 25683c97f5deSRajkumar Manoharan } 25693c97f5deSRajkumar Manoharan } 25703c97f5deSRajkumar Manoharan 25713c97f5deSRajkumar Manoharan /* From NAPI documentation: 25723c97f5deSRajkumar Manoharan * The napi poll() function may also process TX completions, in which 25733c97f5deSRajkumar Manoharan * case if it processes the entire TX ring then it should count that 25743c97f5deSRajkumar Manoharan * work as the rest of the budget. 25753c97f5deSRajkumar Manoharan */ 25763c97f5deSRajkumar Manoharan if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo)) 25773c97f5deSRajkumar Manoharan quota = budget; 2578426e10eaSMichal Kazior 257959465fe4SRajkumar Manoharan /* kfifo_get: called only within txrx_tasklet so it's neatly serialized. 258059465fe4SRajkumar Manoharan * From kfifo_get() documentation: 258159465fe4SRajkumar Manoharan * Note that with only one concurrent reader and one concurrent writer, 258259465fe4SRajkumar Manoharan * you don't need extra locking to use these macro. 258359465fe4SRajkumar Manoharan */ 258459465fe4SRajkumar Manoharan while (kfifo_get(&htt->txdone_fifo, &tx_done)) 258559465fe4SRajkumar Manoharan ath10k_txrx_tx_unref(htt, &tx_done); 25866c5151a9SMichal Kazior 258718f53fe0SRajkumar Manoharan ath10k_mac_tx_push_pending(ar); 258818f53fe0SRajkumar Manoharan 25893c97f5deSRajkumar Manoharan spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags); 25903c97f5deSRajkumar Manoharan skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q); 25913c97f5deSRajkumar Manoharan spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags); 25923c97f5deSRajkumar Manoharan 2593426e10eaSMichal Kazior while ((skb = __skb_dequeue(&tx_ind_q))) { 2594426e10eaSMichal Kazior ath10k_htt_rx_tx_fetch_ind(ar, skb); 25956c5151a9SMichal Kazior dev_kfree_skb_any(skb); 25966c5151a9SMichal Kazior } 25976c5151a9SMichal Kazior 25983c97f5deSRajkumar Manoharan exit: 25995c86d97bSRajkumar Manoharan ath10k_htt_rx_msdu_buff_replenish(htt); 26003c97f5deSRajkumar Manoharan /* In case of rx failure or more data to read, report budget 26013c97f5deSRajkumar Manoharan * to reschedule NAPI poll 26023c97f5deSRajkumar Manoharan */ 26033c97f5deSRajkumar Manoharan done = resched_napi ? budget : quota; 26043c97f5deSRajkumar Manoharan 26053c97f5deSRajkumar Manoharan return done; 26066c5151a9SMichal Kazior } 26073c97f5deSRajkumar Manoharan EXPORT_SYMBOL(ath10k_htt_txrx_compl_task); 2608