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4340 lines
118 KiB
4340 lines
118 KiB
// SPDX-License-Identifier: ISC |
|
/* |
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* Copyright (c) 2005-2011 Atheros Communications Inc. |
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* Copyright (c) 2011-2017 Qualcomm Atheros, Inc. |
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* Copyright (c) 2018, The Linux Foundation. All rights reserved. |
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*/ |
|
|
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#include "core.h" |
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#include "htc.h" |
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#include "htt.h" |
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#include "txrx.h" |
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#include "debug.h" |
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#include "trace.h" |
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#include "mac.h" |
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|
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#include <linux/log2.h> |
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#include <linux/bitfield.h> |
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|
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/* when under memory pressure rx ring refill may fail and needs a retry */ |
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#define HTT_RX_RING_REFILL_RETRY_MS 50 |
|
|
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#define HTT_RX_RING_REFILL_RESCHED_MS 5 |
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|
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static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb); |
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|
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static struct sk_buff * |
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ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr) |
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{ |
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struct ath10k_skb_rxcb *rxcb; |
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|
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hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr) |
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if (rxcb->paddr == paddr) |
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return ATH10K_RXCB_SKB(rxcb); |
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|
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WARN_ON_ONCE(1); |
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return NULL; |
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} |
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|
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static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt) |
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{ |
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struct sk_buff *skb; |
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struct ath10k_skb_rxcb *rxcb; |
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struct hlist_node *n; |
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int i; |
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|
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if (htt->rx_ring.in_ord_rx) { |
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hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) { |
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skb = ATH10K_RXCB_SKB(rxcb); |
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dma_unmap_single(htt->ar->dev, rxcb->paddr, |
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skb->len + skb_tailroom(skb), |
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DMA_FROM_DEVICE); |
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hash_del(&rxcb->hlist); |
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dev_kfree_skb_any(skb); |
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} |
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} else { |
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for (i = 0; i < htt->rx_ring.size; i++) { |
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skb = htt->rx_ring.netbufs_ring[i]; |
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if (!skb) |
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continue; |
|
|
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rxcb = ATH10K_SKB_RXCB(skb); |
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dma_unmap_single(htt->ar->dev, rxcb->paddr, |
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skb->len + skb_tailroom(skb), |
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DMA_FROM_DEVICE); |
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dev_kfree_skb_any(skb); |
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} |
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} |
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|
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htt->rx_ring.fill_cnt = 0; |
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hash_init(htt->rx_ring.skb_table); |
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memset(htt->rx_ring.netbufs_ring, 0, |
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htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0])); |
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} |
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|
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static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt) |
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{ |
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return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32); |
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} |
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|
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static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt) |
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{ |
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return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64); |
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} |
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|
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static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt, |
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void *vaddr) |
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{ |
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htt->rx_ring.paddrs_ring_32 = vaddr; |
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} |
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|
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static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt, |
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void *vaddr) |
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{ |
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htt->rx_ring.paddrs_ring_64 = vaddr; |
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} |
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|
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static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt, |
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dma_addr_t paddr, int idx) |
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{ |
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htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr); |
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} |
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|
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static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt, |
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dma_addr_t paddr, int idx) |
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{ |
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htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr); |
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} |
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|
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static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx) |
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{ |
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htt->rx_ring.paddrs_ring_32[idx] = 0; |
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} |
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|
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static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx) |
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{ |
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htt->rx_ring.paddrs_ring_64[idx] = 0; |
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} |
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|
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static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt) |
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{ |
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return (void *)htt->rx_ring.paddrs_ring_32; |
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} |
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|
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static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt) |
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{ |
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return (void *)htt->rx_ring.paddrs_ring_64; |
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} |
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|
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static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) |
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{ |
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struct htt_rx_desc *rx_desc; |
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struct ath10k_skb_rxcb *rxcb; |
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struct sk_buff *skb; |
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dma_addr_t paddr; |
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int ret = 0, idx; |
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|
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/* The Full Rx Reorder firmware has no way of telling the host |
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* implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring. |
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* To keep things simple make sure ring is always half empty. This |
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* guarantees there'll be no replenishment overruns possible. |
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*/ |
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BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2); |
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|
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idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); |
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|
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if (idx < 0 || idx >= htt->rx_ring.size) { |
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ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n"); |
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idx &= htt->rx_ring.size_mask; |
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ret = -ENOMEM; |
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goto fail; |
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} |
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|
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while (num > 0) { |
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skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN); |
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if (!skb) { |
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ret = -ENOMEM; |
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goto fail; |
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} |
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|
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if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN)) |
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skb_pull(skb, |
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PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) - |
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skb->data); |
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|
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/* Clear rx_desc attention word before posting to Rx ring */ |
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rx_desc = (struct htt_rx_desc *)skb->data; |
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rx_desc->attention.flags = __cpu_to_le32(0); |
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|
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paddr = dma_map_single(htt->ar->dev, skb->data, |
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skb->len + skb_tailroom(skb), |
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DMA_FROM_DEVICE); |
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|
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if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) { |
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dev_kfree_skb_any(skb); |
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ret = -ENOMEM; |
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goto fail; |
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} |
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rxcb = ATH10K_SKB_RXCB(skb); |
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rxcb->paddr = paddr; |
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htt->rx_ring.netbufs_ring[idx] = skb; |
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ath10k_htt_set_paddrs_ring(htt, paddr, idx); |
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htt->rx_ring.fill_cnt++; |
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|
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if (htt->rx_ring.in_ord_rx) { |
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hash_add(htt->rx_ring.skb_table, |
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&ATH10K_SKB_RXCB(skb)->hlist, |
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paddr); |
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} |
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|
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num--; |
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idx++; |
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idx &= htt->rx_ring.size_mask; |
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} |
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|
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fail: |
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/* |
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* Make sure the rx buffer is updated before available buffer |
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* index to avoid any potential rx ring corruption. |
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*/ |
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mb(); |
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*htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx); |
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return ret; |
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} |
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|
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static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) |
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{ |
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lockdep_assert_held(&htt->rx_ring.lock); |
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return __ath10k_htt_rx_ring_fill_n(htt, num); |
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} |
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|
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static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt) |
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{ |
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int ret, num_deficit, num_to_fill; |
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|
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/* Refilling the whole RX ring buffer proves to be a bad idea. The |
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* reason is RX may take up significant amount of CPU cycles and starve |
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* other tasks, e.g. TX on an ethernet device while acting as a bridge |
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* with ath10k wlan interface. This ended up with very poor performance |
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* once CPU the host system was overwhelmed with RX on ath10k. |
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* |
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* By limiting the number of refills the replenishing occurs |
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* progressively. This in turns makes use of the fact tasklets are |
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* processed in FIFO order. This means actual RX processing can starve |
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* out refilling. If there's not enough buffers on RX ring FW will not |
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* report RX until it is refilled with enough buffers. This |
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* automatically balances load wrt to CPU power. |
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* |
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* This probably comes at a cost of lower maximum throughput but |
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* improves the average and stability. |
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*/ |
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spin_lock_bh(&htt->rx_ring.lock); |
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num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt; |
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num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit); |
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num_deficit -= num_to_fill; |
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ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill); |
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if (ret == -ENOMEM) { |
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/* |
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* Failed to fill it to the desired level - |
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* we'll start a timer and try again next time. |
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* As long as enough buffers are left in the ring for |
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* another A-MPDU rx, no special recovery is needed. |
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*/ |
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mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + |
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msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS)); |
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} else if (num_deficit > 0) { |
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mod_timer(&htt->rx_ring.refill_retry_timer, jiffies + |
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msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS)); |
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} |
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spin_unlock_bh(&htt->rx_ring.lock); |
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} |
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|
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static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t) |
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{ |
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struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer); |
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|
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ath10k_htt_rx_msdu_buff_replenish(htt); |
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} |
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int ath10k_htt_rx_ring_refill(struct ath10k *ar) |
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{ |
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struct ath10k_htt *htt = &ar->htt; |
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int ret; |
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if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) |
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return 0; |
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spin_lock_bh(&htt->rx_ring.lock); |
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ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level - |
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htt->rx_ring.fill_cnt)); |
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if (ret) |
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ath10k_htt_rx_ring_free(htt); |
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spin_unlock_bh(&htt->rx_ring.lock); |
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return ret; |
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} |
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void ath10k_htt_rx_free(struct ath10k_htt *htt) |
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{ |
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if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) |
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return; |
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del_timer_sync(&htt->rx_ring.refill_retry_timer); |
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skb_queue_purge(&htt->rx_msdus_q); |
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skb_queue_purge(&htt->rx_in_ord_compl_q); |
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skb_queue_purge(&htt->tx_fetch_ind_q); |
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spin_lock_bh(&htt->rx_ring.lock); |
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ath10k_htt_rx_ring_free(htt); |
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spin_unlock_bh(&htt->rx_ring.lock); |
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dma_free_coherent(htt->ar->dev, |
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ath10k_htt_get_rx_ring_size(htt), |
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ath10k_htt_get_vaddr_ring(htt), |
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htt->rx_ring.base_paddr); |
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dma_free_coherent(htt->ar->dev, |
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sizeof(*htt->rx_ring.alloc_idx.vaddr), |
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htt->rx_ring.alloc_idx.vaddr, |
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htt->rx_ring.alloc_idx.paddr); |
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|
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kfree(htt->rx_ring.netbufs_ring); |
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} |
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static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt) |
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{ |
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struct ath10k *ar = htt->ar; |
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int idx; |
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struct sk_buff *msdu; |
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lockdep_assert_held(&htt->rx_ring.lock); |
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|
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if (htt->rx_ring.fill_cnt == 0) { |
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ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n"); |
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return NULL; |
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} |
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|
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idx = htt->rx_ring.sw_rd_idx.msdu_payld; |
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msdu = htt->rx_ring.netbufs_ring[idx]; |
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htt->rx_ring.netbufs_ring[idx] = NULL; |
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ath10k_htt_reset_paddrs_ring(htt, idx); |
|
|
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idx++; |
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idx &= htt->rx_ring.size_mask; |
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htt->rx_ring.sw_rd_idx.msdu_payld = idx; |
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htt->rx_ring.fill_cnt--; |
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|
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dma_unmap_single(htt->ar->dev, |
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ATH10K_SKB_RXCB(msdu)->paddr, |
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msdu->len + skb_tailroom(msdu), |
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DMA_FROM_DEVICE); |
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ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", |
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msdu->data, msdu->len + skb_tailroom(msdu)); |
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|
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return msdu; |
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} |
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|
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/* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */ |
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static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt, |
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struct sk_buff_head *amsdu) |
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{ |
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struct ath10k *ar = htt->ar; |
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int msdu_len, msdu_chaining = 0; |
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struct sk_buff *msdu; |
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struct htt_rx_desc *rx_desc; |
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|
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lockdep_assert_held(&htt->rx_ring.lock); |
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|
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for (;;) { |
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int last_msdu, msdu_len_invalid, msdu_chained; |
|
|
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msdu = ath10k_htt_rx_netbuf_pop(htt); |
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if (!msdu) { |
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__skb_queue_purge(amsdu); |
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return -ENOENT; |
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} |
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|
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__skb_queue_tail(amsdu, msdu); |
|
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rx_desc = (struct htt_rx_desc *)msdu->data; |
|
|
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/* FIXME: we must report msdu payload since this is what caller |
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* expects now |
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*/ |
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skb_put(msdu, offsetof(struct htt_rx_desc, msdu_payload)); |
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skb_pull(msdu, offsetof(struct htt_rx_desc, msdu_payload)); |
|
|
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/* |
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* Sanity check - confirm the HW is finished filling in the |
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* rx data. |
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* If the HW and SW are working correctly, then it's guaranteed |
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* that the HW's MAC DMA is done before this point in the SW. |
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* To prevent the case that we handle a stale Rx descriptor, |
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* just assert for now until we have a way to recover. |
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*/ |
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if (!(__le32_to_cpu(rx_desc->attention.flags) |
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& RX_ATTENTION_FLAGS_MSDU_DONE)) { |
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__skb_queue_purge(amsdu); |
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return -EIO; |
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} |
|
|
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msdu_len_invalid = !!(__le32_to_cpu(rx_desc->attention.flags) |
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& (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR | |
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RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR)); |
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msdu_len = MS(__le32_to_cpu(rx_desc->msdu_start.common.info0), |
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RX_MSDU_START_INFO0_MSDU_LENGTH); |
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msdu_chained = rx_desc->frag_info.ring2_more_count; |
|
|
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if (msdu_len_invalid) |
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msdu_len = 0; |
|
|
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skb_trim(msdu, 0); |
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skb_put(msdu, min(msdu_len, HTT_RX_MSDU_SIZE)); |
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msdu_len -= msdu->len; |
|
|
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/* Note: Chained buffers do not contain rx descriptor */ |
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while (msdu_chained--) { |
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msdu = ath10k_htt_rx_netbuf_pop(htt); |
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if (!msdu) { |
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__skb_queue_purge(amsdu); |
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return -ENOENT; |
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} |
|
|
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__skb_queue_tail(amsdu, msdu); |
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skb_trim(msdu, 0); |
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skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE)); |
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msdu_len -= msdu->len; |
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msdu_chaining = 1; |
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} |
|
|
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last_msdu = __le32_to_cpu(rx_desc->msdu_end.common.info0) & |
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RX_MSDU_END_INFO0_LAST_MSDU; |
|
|
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trace_ath10k_htt_rx_desc(ar, &rx_desc->attention, |
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sizeof(*rx_desc) - sizeof(u32)); |
|
|
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if (last_msdu) |
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break; |
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} |
|
|
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if (skb_queue_empty(amsdu)) |
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msdu_chaining = -1; |
|
|
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/* |
|
* Don't refill the ring yet. |
|
* |
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* First, the elements popped here are still in use - it is not |
|
* safe to overwrite them until the matching call to |
|
* mpdu_desc_list_next. Second, for efficiency it is preferable to |
|
* refill the rx ring with 1 PPDU's worth of rx buffers (something |
|
* like 32 x 3 buffers), rather than one MPDU's worth of rx buffers |
|
* (something like 3 buffers). Consequently, we'll rely on the txrx |
|
* SW to tell us when it is done pulling all the PPDU's rx buffers |
|
* out of the rx ring, and then refill it just once. |
|
*/ |
|
|
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return msdu_chaining; |
|
} |
|
|
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static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt, |
|
u64 paddr) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct ath10k_skb_rxcb *rxcb; |
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struct sk_buff *msdu; |
|
|
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lockdep_assert_held(&htt->rx_ring.lock); |
|
|
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msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr); |
|
if (!msdu) |
|
return NULL; |
|
|
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rxcb = ATH10K_SKB_RXCB(msdu); |
|
hash_del(&rxcb->hlist); |
|
htt->rx_ring.fill_cnt--; |
|
|
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dma_unmap_single(htt->ar->dev, rxcb->paddr, |
|
msdu->len + skb_tailroom(msdu), |
|
DMA_FROM_DEVICE); |
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ", |
|
msdu->data, msdu->len + skb_tailroom(msdu)); |
|
|
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return msdu; |
|
} |
|
|
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static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head, |
|
struct sk_buff *frag_list, |
|
unsigned int frag_len) |
|
{ |
|
skb_shinfo(skb_head)->frag_list = frag_list; |
|
skb_head->data_len = frag_len; |
|
skb_head->len += skb_head->data_len; |
|
} |
|
|
|
static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt, |
|
struct sk_buff *msdu, |
|
struct htt_rx_in_ord_msdu_desc **msdu_desc) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
u32 paddr; |
|
struct sk_buff *frag_buf; |
|
struct sk_buff *prev_frag_buf; |
|
u8 last_frag; |
|
struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc; |
|
struct htt_rx_desc *rxd; |
|
int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); |
|
|
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rxd = (void *)msdu->data; |
|
trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd)); |
|
|
|
skb_put(msdu, sizeof(struct htt_rx_desc)); |
|
skb_pull(msdu, sizeof(struct htt_rx_desc)); |
|
skb_put(msdu, min(amsdu_len, HTT_RX_MSDU_SIZE)); |
|
amsdu_len -= msdu->len; |
|
|
|
last_frag = ind_desc->reserved; |
|
if (last_frag) { |
|
if (amsdu_len) { |
|
ath10k_warn(ar, "invalid amsdu len %u, left %d", |
|
__le16_to_cpu(ind_desc->msdu_len), |
|
amsdu_len); |
|
} |
|
return 0; |
|
} |
|
|
|
ind_desc++; |
|
paddr = __le32_to_cpu(ind_desc->msdu_paddr); |
|
frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!frag_buf) { |
|
ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr); |
|
return -ENOENT; |
|
} |
|
|
|
skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); |
|
ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); |
|
|
|
amsdu_len -= frag_buf->len; |
|
prev_frag_buf = frag_buf; |
|
last_frag = ind_desc->reserved; |
|
while (!last_frag) { |
|
ind_desc++; |
|
paddr = __le32_to_cpu(ind_desc->msdu_paddr); |
|
frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!frag_buf) { |
|
ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x", |
|
paddr); |
|
prev_frag_buf->next = NULL; |
|
return -ENOENT; |
|
} |
|
|
|
skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); |
|
last_frag = ind_desc->reserved; |
|
amsdu_len -= frag_buf->len; |
|
|
|
prev_frag_buf->next = frag_buf; |
|
prev_frag_buf = frag_buf; |
|
} |
|
|
|
if (amsdu_len) { |
|
ath10k_warn(ar, "invalid amsdu len %u, left %d", |
|
__le16_to_cpu(ind_desc->msdu_len), amsdu_len); |
|
} |
|
|
|
*msdu_desc = ind_desc; |
|
|
|
prev_frag_buf->next = NULL; |
|
return 0; |
|
} |
|
|
|
static int |
|
ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt, |
|
struct sk_buff *msdu, |
|
struct htt_rx_in_ord_msdu_desc_ext **msdu_desc) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
u64 paddr; |
|
struct sk_buff *frag_buf; |
|
struct sk_buff *prev_frag_buf; |
|
u8 last_frag; |
|
struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc; |
|
struct htt_rx_desc *rxd; |
|
int amsdu_len = __le16_to_cpu(ind_desc->msdu_len); |
|
|
|
rxd = (void *)msdu->data; |
|
trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd)); |
|
|
|
skb_put(msdu, sizeof(struct htt_rx_desc)); |
|
skb_pull(msdu, sizeof(struct htt_rx_desc)); |
|
skb_put(msdu, min(amsdu_len, HTT_RX_MSDU_SIZE)); |
|
amsdu_len -= msdu->len; |
|
|
|
last_frag = ind_desc->reserved; |
|
if (last_frag) { |
|
if (amsdu_len) { |
|
ath10k_warn(ar, "invalid amsdu len %u, left %d", |
|
__le16_to_cpu(ind_desc->msdu_len), |
|
amsdu_len); |
|
} |
|
return 0; |
|
} |
|
|
|
ind_desc++; |
|
paddr = __le64_to_cpu(ind_desc->msdu_paddr); |
|
frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!frag_buf) { |
|
ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr); |
|
return -ENOENT; |
|
} |
|
|
|
skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); |
|
ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len); |
|
|
|
amsdu_len -= frag_buf->len; |
|
prev_frag_buf = frag_buf; |
|
last_frag = ind_desc->reserved; |
|
while (!last_frag) { |
|
ind_desc++; |
|
paddr = __le64_to_cpu(ind_desc->msdu_paddr); |
|
frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!frag_buf) { |
|
ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx", |
|
paddr); |
|
prev_frag_buf->next = NULL; |
|
return -ENOENT; |
|
} |
|
|
|
skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE)); |
|
last_frag = ind_desc->reserved; |
|
amsdu_len -= frag_buf->len; |
|
|
|
prev_frag_buf->next = frag_buf; |
|
prev_frag_buf = frag_buf; |
|
} |
|
|
|
if (amsdu_len) { |
|
ath10k_warn(ar, "invalid amsdu len %u, left %d", |
|
__le16_to_cpu(ind_desc->msdu_len), amsdu_len); |
|
} |
|
|
|
*msdu_desc = ind_desc; |
|
|
|
prev_frag_buf->next = NULL; |
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt, |
|
struct htt_rx_in_ord_ind *ev, |
|
struct sk_buff_head *list) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32; |
|
struct htt_rx_desc *rxd; |
|
struct sk_buff *msdu; |
|
int msdu_count, ret; |
|
bool is_offload; |
|
u32 paddr; |
|
|
|
lockdep_assert_held(&htt->rx_ring.lock); |
|
|
|
msdu_count = __le16_to_cpu(ev->msdu_count); |
|
is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); |
|
|
|
while (msdu_count--) { |
|
paddr = __le32_to_cpu(msdu_desc->msdu_paddr); |
|
|
|
msdu = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!msdu) { |
|
__skb_queue_purge(list); |
|
return -ENOENT; |
|
} |
|
|
|
if (!is_offload && ar->monitor_arvif) { |
|
ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu, |
|
&msdu_desc); |
|
if (ret) { |
|
__skb_queue_purge(list); |
|
return ret; |
|
} |
|
__skb_queue_tail(list, msdu); |
|
msdu_desc++; |
|
continue; |
|
} |
|
|
|
__skb_queue_tail(list, msdu); |
|
|
|
if (!is_offload) { |
|
rxd = (void *)msdu->data; |
|
|
|
trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd)); |
|
|
|
skb_put(msdu, sizeof(*rxd)); |
|
skb_pull(msdu, sizeof(*rxd)); |
|
skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); |
|
|
|
if (!(__le32_to_cpu(rxd->attention.flags) & |
|
RX_ATTENTION_FLAGS_MSDU_DONE)) { |
|
ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); |
|
return -EIO; |
|
} |
|
} |
|
|
|
msdu_desc++; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt, |
|
struct htt_rx_in_ord_ind *ev, |
|
struct sk_buff_head *list) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64; |
|
struct htt_rx_desc *rxd; |
|
struct sk_buff *msdu; |
|
int msdu_count, ret; |
|
bool is_offload; |
|
u64 paddr; |
|
|
|
lockdep_assert_held(&htt->rx_ring.lock); |
|
|
|
msdu_count = __le16_to_cpu(ev->msdu_count); |
|
is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); |
|
|
|
while (msdu_count--) { |
|
paddr = __le64_to_cpu(msdu_desc->msdu_paddr); |
|
msdu = ath10k_htt_rx_pop_paddr(htt, paddr); |
|
if (!msdu) { |
|
__skb_queue_purge(list); |
|
return -ENOENT; |
|
} |
|
|
|
if (!is_offload && ar->monitor_arvif) { |
|
ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu, |
|
&msdu_desc); |
|
if (ret) { |
|
__skb_queue_purge(list); |
|
return ret; |
|
} |
|
__skb_queue_tail(list, msdu); |
|
msdu_desc++; |
|
continue; |
|
} |
|
|
|
__skb_queue_tail(list, msdu); |
|
|
|
if (!is_offload) { |
|
rxd = (void *)msdu->data; |
|
|
|
trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd)); |
|
|
|
skb_put(msdu, sizeof(*rxd)); |
|
skb_pull(msdu, sizeof(*rxd)); |
|
skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len)); |
|
|
|
if (!(__le32_to_cpu(rxd->attention.flags) & |
|
RX_ATTENTION_FLAGS_MSDU_DONE)) { |
|
ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n"); |
|
return -EIO; |
|
} |
|
} |
|
|
|
msdu_desc++; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int ath10k_htt_rx_alloc(struct ath10k_htt *htt) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
dma_addr_t paddr; |
|
void *vaddr, *vaddr_ring; |
|
size_t size; |
|
struct timer_list *timer = &htt->rx_ring.refill_retry_timer; |
|
|
|
if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) |
|
return 0; |
|
|
|
htt->rx_confused = false; |
|
|
|
/* XXX: The fill level could be changed during runtime in response to |
|
* the host processing latency. Is this really worth it? |
|
*/ |
|
htt->rx_ring.size = HTT_RX_RING_SIZE; |
|
htt->rx_ring.size_mask = htt->rx_ring.size - 1; |
|
htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level; |
|
|
|
if (!is_power_of_2(htt->rx_ring.size)) { |
|
ath10k_warn(ar, "htt rx ring size is not power of 2\n"); |
|
return -EINVAL; |
|
} |
|
|
|
htt->rx_ring.netbufs_ring = |
|
kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *), |
|
GFP_KERNEL); |
|
if (!htt->rx_ring.netbufs_ring) |
|
goto err_netbuf; |
|
|
|
size = ath10k_htt_get_rx_ring_size(htt); |
|
|
|
vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL); |
|
if (!vaddr_ring) |
|
goto err_dma_ring; |
|
|
|
ath10k_htt_config_paddrs_ring(htt, vaddr_ring); |
|
htt->rx_ring.base_paddr = paddr; |
|
|
|
vaddr = dma_alloc_coherent(htt->ar->dev, |
|
sizeof(*htt->rx_ring.alloc_idx.vaddr), |
|
&paddr, GFP_KERNEL); |
|
if (!vaddr) |
|
goto err_dma_idx; |
|
|
|
htt->rx_ring.alloc_idx.vaddr = vaddr; |
|
htt->rx_ring.alloc_idx.paddr = paddr; |
|
htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask; |
|
*htt->rx_ring.alloc_idx.vaddr = 0; |
|
|
|
/* Initialize the Rx refill retry timer */ |
|
timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0); |
|
|
|
spin_lock_init(&htt->rx_ring.lock); |
|
|
|
htt->rx_ring.fill_cnt = 0; |
|
htt->rx_ring.sw_rd_idx.msdu_payld = 0; |
|
hash_init(htt->rx_ring.skb_table); |
|
|
|
skb_queue_head_init(&htt->rx_msdus_q); |
|
skb_queue_head_init(&htt->rx_in_ord_compl_q); |
|
skb_queue_head_init(&htt->tx_fetch_ind_q); |
|
atomic_set(&htt->num_mpdus_ready, 0); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n", |
|
htt->rx_ring.size, htt->rx_ring.fill_level); |
|
return 0; |
|
|
|
err_dma_idx: |
|
dma_free_coherent(htt->ar->dev, |
|
ath10k_htt_get_rx_ring_size(htt), |
|
vaddr_ring, |
|
htt->rx_ring.base_paddr); |
|
err_dma_ring: |
|
kfree(htt->rx_ring.netbufs_ring); |
|
err_netbuf: |
|
return -ENOMEM; |
|
} |
|
|
|
static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar, |
|
enum htt_rx_mpdu_encrypt_type type) |
|
{ |
|
switch (type) { |
|
case HTT_RX_MPDU_ENCRYPT_NONE: |
|
return 0; |
|
case HTT_RX_MPDU_ENCRYPT_WEP40: |
|
case HTT_RX_MPDU_ENCRYPT_WEP104: |
|
return IEEE80211_WEP_IV_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: |
|
return IEEE80211_TKIP_IV_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: |
|
return IEEE80211_CCMP_HDR_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: |
|
return IEEE80211_CCMP_256_HDR_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: |
|
return IEEE80211_GCMP_HDR_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_WEP128: |
|
case HTT_RX_MPDU_ENCRYPT_WAPI: |
|
break; |
|
} |
|
|
|
ath10k_warn(ar, "unsupported encryption type %d\n", type); |
|
return 0; |
|
} |
|
|
|
#define MICHAEL_MIC_LEN 8 |
|
|
|
static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar, |
|
enum htt_rx_mpdu_encrypt_type type) |
|
{ |
|
switch (type) { |
|
case HTT_RX_MPDU_ENCRYPT_NONE: |
|
case HTT_RX_MPDU_ENCRYPT_WEP40: |
|
case HTT_RX_MPDU_ENCRYPT_WEP104: |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: |
|
return 0; |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: |
|
return IEEE80211_CCMP_MIC_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: |
|
return IEEE80211_CCMP_256_MIC_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: |
|
return IEEE80211_GCMP_MIC_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_WEP128: |
|
case HTT_RX_MPDU_ENCRYPT_WAPI: |
|
break; |
|
} |
|
|
|
ath10k_warn(ar, "unsupported encryption type %d\n", type); |
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar, |
|
enum htt_rx_mpdu_encrypt_type type) |
|
{ |
|
switch (type) { |
|
case HTT_RX_MPDU_ENCRYPT_NONE: |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2: |
|
case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2: |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2: |
|
case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2: |
|
return 0; |
|
case HTT_RX_MPDU_ENCRYPT_WEP40: |
|
case HTT_RX_MPDU_ENCRYPT_WEP104: |
|
return IEEE80211_WEP_ICV_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC: |
|
case HTT_RX_MPDU_ENCRYPT_TKIP_WPA: |
|
return IEEE80211_TKIP_ICV_LEN; |
|
case HTT_RX_MPDU_ENCRYPT_WEP128: |
|
case HTT_RX_MPDU_ENCRYPT_WAPI: |
|
break; |
|
} |
|
|
|
ath10k_warn(ar, "unsupported encryption type %d\n", type); |
|
return 0; |
|
} |
|
|
|
struct amsdu_subframe_hdr { |
|
u8 dst[ETH_ALEN]; |
|
u8 src[ETH_ALEN]; |
|
__be16 len; |
|
} __packed; |
|
|
|
#define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63) |
|
|
|
static inline u8 ath10k_bw_to_mac80211_bw(u8 bw) |
|
{ |
|
u8 ret = 0; |
|
|
|
switch (bw) { |
|
case 0: |
|
ret = RATE_INFO_BW_20; |
|
break; |
|
case 1: |
|
ret = RATE_INFO_BW_40; |
|
break; |
|
case 2: |
|
ret = RATE_INFO_BW_80; |
|
break; |
|
case 3: |
|
ret = RATE_INFO_BW_160; |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static void ath10k_htt_rx_h_rates(struct ath10k *ar, |
|
struct ieee80211_rx_status *status, |
|
struct htt_rx_desc *rxd) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
u8 cck, rate, bw, sgi, mcs, nss; |
|
u8 preamble = 0; |
|
u8 group_id; |
|
u32 info1, info2, info3; |
|
u32 stbc, nsts_su; |
|
|
|
info1 = __le32_to_cpu(rxd->ppdu_start.info1); |
|
info2 = __le32_to_cpu(rxd->ppdu_start.info2); |
|
info3 = __le32_to_cpu(rxd->ppdu_start.info3); |
|
|
|
preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE); |
|
|
|
switch (preamble) { |
|
case HTT_RX_LEGACY: |
|
/* To get legacy rate index band is required. Since band can't |
|
* be undefined check if freq is non-zero. |
|
*/ |
|
if (!status->freq) |
|
return; |
|
|
|
cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT; |
|
rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE); |
|
rate &= ~RX_PPDU_START_RATE_FLAG; |
|
|
|
sband = &ar->mac.sbands[status->band]; |
|
status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck); |
|
break; |
|
case HTT_RX_HT: |
|
case HTT_RX_HT_WITH_TXBF: |
|
/* HT-SIG - Table 20-11 in info2 and info3 */ |
|
mcs = info2 & 0x1F; |
|
nss = mcs >> 3; |
|
bw = (info2 >> 7) & 1; |
|
sgi = (info3 >> 7) & 1; |
|
|
|
status->rate_idx = mcs; |
|
status->encoding = RX_ENC_HT; |
|
if (sgi) |
|
status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
|
if (bw) |
|
status->bw = RATE_INFO_BW_40; |
|
break; |
|
case HTT_RX_VHT: |
|
case HTT_RX_VHT_WITH_TXBF: |
|
/* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3 |
|
* TODO check this |
|
*/ |
|
bw = info2 & 3; |
|
sgi = info3 & 1; |
|
stbc = (info2 >> 3) & 1; |
|
group_id = (info2 >> 4) & 0x3F; |
|
|
|
if (GROUP_ID_IS_SU_MIMO(group_id)) { |
|
mcs = (info3 >> 4) & 0x0F; |
|
nsts_su = ((info2 >> 10) & 0x07); |
|
if (stbc) |
|
nss = (nsts_su >> 2) + 1; |
|
else |
|
nss = (nsts_su + 1); |
|
} else { |
|
/* Hardware doesn't decode VHT-SIG-B into Rx descriptor |
|
* so it's impossible to decode MCS. Also since |
|
* firmware consumes Group Id Management frames host |
|
* has no knowledge regarding group/user position |
|
* mapping so it's impossible to pick the correct Nsts |
|
* from VHT-SIG-A1. |
|
* |
|
* Bandwidth and SGI are valid so report the rateinfo |
|
* on best-effort basis. |
|
*/ |
|
mcs = 0; |
|
nss = 1; |
|
} |
|
|
|
if (mcs > 0x09) { |
|
ath10k_warn(ar, "invalid MCS received %u\n", mcs); |
|
ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n", |
|
__le32_to_cpu(rxd->attention.flags), |
|
__le32_to_cpu(rxd->mpdu_start.info0), |
|
__le32_to_cpu(rxd->mpdu_start.info1), |
|
__le32_to_cpu(rxd->msdu_start.common.info0), |
|
__le32_to_cpu(rxd->msdu_start.common.info1), |
|
rxd->ppdu_start.info0, |
|
__le32_to_cpu(rxd->ppdu_start.info1), |
|
__le32_to_cpu(rxd->ppdu_start.info2), |
|
__le32_to_cpu(rxd->ppdu_start.info3), |
|
__le32_to_cpu(rxd->ppdu_start.info4)); |
|
|
|
ath10k_warn(ar, "msdu end %08x mpdu end %08x\n", |
|
__le32_to_cpu(rxd->msdu_end.common.info0), |
|
__le32_to_cpu(rxd->mpdu_end.info0)); |
|
|
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, |
|
"rx desc msdu payload: ", |
|
rxd->msdu_payload, 50); |
|
} |
|
|
|
status->rate_idx = mcs; |
|
status->nss = nss; |
|
|
|
if (sgi) |
|
status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
|
|
|
status->bw = ath10k_bw_to_mac80211_bw(bw); |
|
status->encoding = RX_ENC_VHT; |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
static struct ieee80211_channel * |
|
ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) |
|
{ |
|
struct ath10k_peer *peer; |
|
struct ath10k_vif *arvif; |
|
struct cfg80211_chan_def def; |
|
u16 peer_id; |
|
|
|
lockdep_assert_held(&ar->data_lock); |
|
|
|
if (!rxd) |
|
return NULL; |
|
|
|
if (rxd->attention.flags & |
|
__cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) |
|
return NULL; |
|
|
|
if (!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) |
|
return NULL; |
|
|
|
peer_id = MS(__le32_to_cpu(rxd->mpdu_start.info0), |
|
RX_MPDU_START_INFO0_PEER_IDX); |
|
|
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer) |
|
return NULL; |
|
|
|
arvif = ath10k_get_arvif(ar, peer->vdev_id); |
|
if (WARN_ON_ONCE(!arvif)) |
|
return NULL; |
|
|
|
if (ath10k_mac_vif_chan(arvif->vif, &def)) |
|
return NULL; |
|
|
|
return def.chan; |
|
} |
|
|
|
static struct ieee80211_channel * |
|
ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) |
|
{ |
|
struct ath10k_vif *arvif; |
|
struct cfg80211_chan_def def; |
|
|
|
lockdep_assert_held(&ar->data_lock); |
|
|
|
list_for_each_entry(arvif, &ar->arvifs, list) { |
|
if (arvif->vdev_id == vdev_id && |
|
ath10k_mac_vif_chan(arvif->vif, &def) == 0) |
|
return def.chan; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static void |
|
ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, |
|
struct ieee80211_chanctx_conf *conf, |
|
void *data) |
|
{ |
|
struct cfg80211_chan_def *def = data; |
|
|
|
*def = conf->def; |
|
} |
|
|
|
static struct ieee80211_channel * |
|
ath10k_htt_rx_h_any_channel(struct ath10k *ar) |
|
{ |
|
struct cfg80211_chan_def def = {}; |
|
|
|
ieee80211_iter_chan_contexts_atomic(ar->hw, |
|
ath10k_htt_rx_h_any_chan_iter, |
|
&def); |
|
|
|
return def.chan; |
|
} |
|
|
|
static bool ath10k_htt_rx_h_channel(struct ath10k *ar, |
|
struct ieee80211_rx_status *status, |
|
struct htt_rx_desc *rxd, |
|
u32 vdev_id) |
|
{ |
|
struct ieee80211_channel *ch; |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
ch = ar->scan_channel; |
|
if (!ch) |
|
ch = ar->rx_channel; |
|
if (!ch) |
|
ch = ath10k_htt_rx_h_peer_channel(ar, rxd); |
|
if (!ch) |
|
ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); |
|
if (!ch) |
|
ch = ath10k_htt_rx_h_any_channel(ar); |
|
if (!ch) |
|
ch = ar->tgt_oper_chan; |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
if (!ch) |
|
return false; |
|
|
|
status->band = ch->band; |
|
status->freq = ch->center_freq; |
|
|
|
return true; |
|
} |
|
|
|
static void ath10k_htt_rx_h_signal(struct ath10k *ar, |
|
struct ieee80211_rx_status *status, |
|
struct htt_rx_desc *rxd) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) { |
|
status->chains &= ~BIT(i); |
|
|
|
if (rxd->ppdu_start.rssi_chains[i].pri20_mhz != 0x80) { |
|
status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR + |
|
rxd->ppdu_start.rssi_chains[i].pri20_mhz; |
|
|
|
status->chains |= BIT(i); |
|
} |
|
} |
|
|
|
/* FIXME: Get real NF */ |
|
status->signal = ATH10K_DEFAULT_NOISE_FLOOR + |
|
rxd->ppdu_start.rssi_comb; |
|
status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; |
|
} |
|
|
|
static void ath10k_htt_rx_h_mactime(struct ath10k *ar, |
|
struct ieee80211_rx_status *status, |
|
struct htt_rx_desc *rxd) |
|
{ |
|
/* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This |
|
* means all prior MSDUs in a PPDU are reported to mac80211 without the |
|
* TSF. Is it worth holding frames until end of PPDU is known? |
|
* |
|
* FIXME: Can we get/compute 64bit TSF? |
|
*/ |
|
status->mactime = __le32_to_cpu(rxd->ppdu_end.common.tsf_timestamp); |
|
status->flag |= RX_FLAG_MACTIME_END; |
|
} |
|
|
|
static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
struct ieee80211_rx_status *status, |
|
u32 vdev_id) |
|
{ |
|
struct sk_buff *first; |
|
struct htt_rx_desc *rxd; |
|
bool is_first_ppdu; |
|
bool is_last_ppdu; |
|
|
|
if (skb_queue_empty(amsdu)) |
|
return; |
|
|
|
first = skb_peek(amsdu); |
|
rxd = (void *)first->data - sizeof(*rxd); |
|
|
|
is_first_ppdu = !!(rxd->attention.flags & |
|
__cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU)); |
|
is_last_ppdu = !!(rxd->attention.flags & |
|
__cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU)); |
|
|
|
if (is_first_ppdu) { |
|
/* New PPDU starts so clear out the old per-PPDU status. */ |
|
status->freq = 0; |
|
status->rate_idx = 0; |
|
status->nss = 0; |
|
status->encoding = RX_ENC_LEGACY; |
|
status->bw = RATE_INFO_BW_20; |
|
|
|
status->flag &= ~RX_FLAG_MACTIME_END; |
|
status->flag |= RX_FLAG_NO_SIGNAL_VAL; |
|
|
|
status->flag &= ~(RX_FLAG_AMPDU_IS_LAST); |
|
status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; |
|
status->ampdu_reference = ar->ampdu_reference; |
|
|
|
ath10k_htt_rx_h_signal(ar, status, rxd); |
|
ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); |
|
ath10k_htt_rx_h_rates(ar, status, rxd); |
|
} |
|
|
|
if (is_last_ppdu) { |
|
ath10k_htt_rx_h_mactime(ar, status, rxd); |
|
|
|
/* set ampdu last segment flag */ |
|
status->flag |= RX_FLAG_AMPDU_IS_LAST; |
|
ar->ampdu_reference++; |
|
} |
|
} |
|
|
|
static const char * const tid_to_ac[] = { |
|
"BE", |
|
"BK", |
|
"BK", |
|
"BE", |
|
"VI", |
|
"VI", |
|
"VO", |
|
"VO", |
|
}; |
|
|
|
static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) |
|
{ |
|
u8 *qc; |
|
int tid; |
|
|
|
if (!ieee80211_is_data_qos(hdr->frame_control)) |
|
return ""; |
|
|
|
qc = ieee80211_get_qos_ctl(hdr); |
|
tid = *qc & IEEE80211_QOS_CTL_TID_MASK; |
|
if (tid < 8) |
|
snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]); |
|
else |
|
snprintf(out, size, "tid %d", tid); |
|
|
|
return out; |
|
} |
|
|
|
static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar, |
|
struct ieee80211_rx_status *rx_status, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_rx_status *status; |
|
|
|
status = IEEE80211_SKB_RXCB(skb); |
|
*status = *rx_status; |
|
|
|
skb_queue_tail(&ar->htt.rx_msdus_q, skb); |
|
} |
|
|
|
static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_rx_status *status; |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
|
char tid[32]; |
|
|
|
status = IEEE80211_SKB_RXCB(skb); |
|
|
|
if (!(ar->filter_flags & FIF_FCSFAIL) && |
|
status->flag & RX_FLAG_FAILED_FCS_CRC) { |
|
ar->stats.rx_crc_err_drop++; |
|
dev_kfree_skb_any(skb); |
|
return; |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_DATA, |
|
"rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n", |
|
skb, |
|
skb->len, |
|
ieee80211_get_SA(hdr), |
|
ath10k_get_tid(hdr, tid, sizeof(tid)), |
|
is_multicast_ether_addr(ieee80211_get_DA(hdr)) ? |
|
"mcast" : "ucast", |
|
(__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4, |
|
(status->encoding == RX_ENC_LEGACY) ? "legacy" : "", |
|
(status->encoding == RX_ENC_HT) ? "ht" : "", |
|
(status->encoding == RX_ENC_VHT) ? "vht" : "", |
|
(status->bw == RATE_INFO_BW_40) ? "40" : "", |
|
(status->bw == RATE_INFO_BW_80) ? "80" : "", |
|
(status->bw == RATE_INFO_BW_160) ? "160" : "", |
|
status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "", |
|
status->rate_idx, |
|
status->nss, |
|
status->freq, |
|
status->band, status->flag, |
|
!!(status->flag & RX_FLAG_FAILED_FCS_CRC), |
|
!!(status->flag & RX_FLAG_MMIC_ERROR), |
|
!!(status->flag & RX_FLAG_AMSDU_MORE)); |
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ", |
|
skb->data, skb->len); |
|
trace_ath10k_rx_hdr(ar, skb->data, skb->len); |
|
trace_ath10k_rx_payload(ar, skb->data, skb->len); |
|
|
|
ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); |
|
} |
|
|
|
static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar, |
|
struct ieee80211_hdr *hdr) |
|
{ |
|
int len = ieee80211_hdrlen(hdr->frame_control); |
|
|
|
if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING, |
|
ar->running_fw->fw_file.fw_features)) |
|
len = round_up(len, 4); |
|
|
|
return len; |
|
} |
|
|
|
static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
struct ieee80211_rx_status *status, |
|
enum htt_rx_mpdu_encrypt_type enctype, |
|
bool is_decrypted, |
|
const u8 first_hdr[64]) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
struct htt_rx_desc *rxd; |
|
size_t hdr_len; |
|
size_t crypto_len; |
|
bool is_first; |
|
bool is_last; |
|
bool msdu_limit_err; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
u8 *qos; |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
is_first = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); |
|
is_last = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); |
|
|
|
/* Delivered decapped frame: |
|
* [802.11 header] |
|
* [crypto param] <-- can be trimmed if !fcs_err && |
|
* !decrypt_err && !peer_idx_invalid |
|
* [amsdu header] <-- only if A-MSDU |
|
* [rfc1042/llc] |
|
* [payload] |
|
* [FCS] <-- at end, needs to be trimmed |
|
*/ |
|
|
|
/* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when |
|
* deaggregate, so that unwanted MSDU-deaggregation is avoided for |
|
* error packets. If limit exceeds, hw sends all remaining MSDUs as |
|
* a single last MSDU with this msdu limit error set. |
|
*/ |
|
msdu_limit_err = ath10k_rx_desc_msdu_limit_error(&ar->hw_params, rxd); |
|
|
|
/* If MSDU limit error happens, then don't warn on, the partial raw MSDU |
|
* without first MSDU is expected in that case, and handled later here. |
|
*/ |
|
/* This probably shouldn't happen but warn just in case */ |
|
if (WARN_ON_ONCE(!is_first && !msdu_limit_err)) |
|
return; |
|
|
|
/* This probably shouldn't happen but warn just in case */ |
|
if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err)) |
|
return; |
|
|
|
skb_trim(msdu, msdu->len - FCS_LEN); |
|
|
|
/* Push original 80211 header */ |
|
if (unlikely(msdu_limit_err)) { |
|
hdr = (struct ieee80211_hdr *)first_hdr; |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); |
|
|
|
if (ieee80211_is_data_qos(hdr->frame_control)) { |
|
qos = ieee80211_get_qos_ctl(hdr); |
|
qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
|
} |
|
|
|
if (crypto_len) |
|
memcpy(skb_push(msdu, crypto_len), |
|
(void *)hdr + round_up(hdr_len, bytes_aligned), |
|
crypto_len); |
|
|
|
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); |
|
} |
|
|
|
/* In most cases this will be true for sniffed frames. It makes sense |
|
* to deliver them as-is without stripping the crypto param. This is |
|
* necessary for software based decryption. |
|
* |
|
* If there's no error then the frame is decrypted. At least that is |
|
* the case for frames that come in via fragmented rx indication. |
|
*/ |
|
if (!is_decrypted) |
|
return; |
|
|
|
/* The payload is decrypted so strip crypto params. Start from tail |
|
* since hdr is used to compute some stuff. |
|
*/ |
|
|
|
hdr = (void *)msdu->data; |
|
|
|
/* Tail */ |
|
if (status->flag & RX_FLAG_IV_STRIPPED) { |
|
skb_trim(msdu, msdu->len - |
|
ath10k_htt_rx_crypto_mic_len(ar, enctype)); |
|
|
|
skb_trim(msdu, msdu->len - |
|
ath10k_htt_rx_crypto_icv_len(ar, enctype)); |
|
} else { |
|
/* MIC */ |
|
if (status->flag & RX_FLAG_MIC_STRIPPED) |
|
skb_trim(msdu, msdu->len - |
|
ath10k_htt_rx_crypto_mic_len(ar, enctype)); |
|
|
|
/* ICV */ |
|
if (status->flag & RX_FLAG_ICV_STRIPPED) |
|
skb_trim(msdu, msdu->len - |
|
ath10k_htt_rx_crypto_icv_len(ar, enctype)); |
|
} |
|
|
|
/* MMIC */ |
|
if ((status->flag & RX_FLAG_MMIC_STRIPPED) && |
|
!ieee80211_has_morefrags(hdr->frame_control) && |
|
enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) |
|
skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN); |
|
|
|
/* Head */ |
|
if (status->flag & RX_FLAG_IV_STRIPPED) { |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); |
|
|
|
memmove((void *)msdu->data + crypto_len, |
|
(void *)msdu->data, hdr_len); |
|
skb_pull(msdu, crypto_len); |
|
} |
|
} |
|
|
|
static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
struct ieee80211_rx_status *status, |
|
const u8 first_hdr[64], |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
struct htt_rx_desc *rxd; |
|
size_t hdr_len; |
|
u8 da[ETH_ALEN]; |
|
u8 sa[ETH_ALEN]; |
|
int l3_pad_bytes; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
|
|
/* Delivered decapped frame: |
|
* [nwifi 802.11 header] <-- replaced with 802.11 hdr |
|
* [rfc1042/llc] |
|
* |
|
* Note: The nwifi header doesn't have QoS Control and is |
|
* (always?) a 3addr frame. |
|
* |
|
* Note2: There's no A-MSDU subframe header. Even if it's part |
|
* of an A-MSDU. |
|
*/ |
|
|
|
/* pull decapped header and copy SA & DA */ |
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
|
|
l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); |
|
skb_put(msdu, l3_pad_bytes); |
|
|
|
hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes); |
|
|
|
hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr); |
|
ether_addr_copy(da, ieee80211_get_DA(hdr)); |
|
ether_addr_copy(sa, ieee80211_get_SA(hdr)); |
|
skb_pull(msdu, hdr_len); |
|
|
|
/* push original 802.11 header */ |
|
hdr = (struct ieee80211_hdr *)first_hdr; |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
|
|
if (!(status->flag & RX_FLAG_IV_STRIPPED)) { |
|
memcpy(skb_push(msdu, |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)), |
|
(void *)hdr + round_up(hdr_len, bytes_aligned), |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)); |
|
} |
|
|
|
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); |
|
|
|
/* original 802.11 header has a different DA and in |
|
* case of 4addr it may also have different SA |
|
*/ |
|
hdr = (struct ieee80211_hdr *)msdu->data; |
|
ether_addr_copy(ieee80211_get_DA(hdr), da); |
|
ether_addr_copy(ieee80211_get_SA(hdr), sa); |
|
} |
|
|
|
static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
struct htt_rx_desc *rxd; |
|
size_t hdr_len, crypto_len; |
|
void *rfc1042; |
|
bool is_first, is_last, is_amsdu; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
hdr = (void *)rxd->rx_hdr_status; |
|
|
|
is_first = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); |
|
is_last = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); |
|
is_amsdu = !(is_first && is_last); |
|
|
|
rfc1042 = hdr; |
|
|
|
if (is_first) { |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); |
|
|
|
rfc1042 += round_up(hdr_len, bytes_aligned) + |
|
round_up(crypto_len, bytes_aligned); |
|
} |
|
|
|
if (is_amsdu) |
|
rfc1042 += sizeof(struct amsdu_subframe_hdr); |
|
|
|
return rfc1042; |
|
} |
|
|
|
static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
struct ieee80211_rx_status *status, |
|
const u8 first_hdr[64], |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
struct ethhdr *eth; |
|
size_t hdr_len; |
|
void *rfc1042; |
|
u8 da[ETH_ALEN]; |
|
u8 sa[ETH_ALEN]; |
|
int l3_pad_bytes; |
|
struct htt_rx_desc *rxd; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
|
|
/* Delivered decapped frame: |
|
* [eth header] <-- replaced with 802.11 hdr & rfc1042/llc |
|
* [payload] |
|
*/ |
|
|
|
rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype); |
|
if (WARN_ON_ONCE(!rfc1042)) |
|
return; |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); |
|
skb_put(msdu, l3_pad_bytes); |
|
skb_pull(msdu, l3_pad_bytes); |
|
|
|
/* pull decapped header and copy SA & DA */ |
|
eth = (struct ethhdr *)msdu->data; |
|
ether_addr_copy(da, eth->h_dest); |
|
ether_addr_copy(sa, eth->h_source); |
|
skb_pull(msdu, sizeof(struct ethhdr)); |
|
|
|
/* push rfc1042/llc/snap */ |
|
memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042, |
|
sizeof(struct rfc1042_hdr)); |
|
|
|
/* push original 802.11 header */ |
|
hdr = (struct ieee80211_hdr *)first_hdr; |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
|
|
if (!(status->flag & RX_FLAG_IV_STRIPPED)) { |
|
memcpy(skb_push(msdu, |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)), |
|
(void *)hdr + round_up(hdr_len, bytes_aligned), |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)); |
|
} |
|
|
|
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); |
|
|
|
/* original 802.11 header has a different DA and in |
|
* case of 4addr it may also have different SA |
|
*/ |
|
hdr = (struct ieee80211_hdr *)msdu->data; |
|
ether_addr_copy(ieee80211_get_DA(hdr), da); |
|
ether_addr_copy(ieee80211_get_SA(hdr), sa); |
|
} |
|
|
|
static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
struct ieee80211_rx_status *status, |
|
const u8 first_hdr[64], |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
size_t hdr_len; |
|
int l3_pad_bytes; |
|
struct htt_rx_desc *rxd; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
|
|
/* Delivered decapped frame: |
|
* [amsdu header] <-- replaced with 802.11 hdr |
|
* [rfc1042/llc] |
|
* [payload] |
|
*/ |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd); |
|
|
|
skb_put(msdu, l3_pad_bytes); |
|
skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes); |
|
|
|
hdr = (struct ieee80211_hdr *)first_hdr; |
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
|
|
if (!(status->flag & RX_FLAG_IV_STRIPPED)) { |
|
memcpy(skb_push(msdu, |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)), |
|
(void *)hdr + round_up(hdr_len, bytes_aligned), |
|
ath10k_htt_rx_crypto_param_len(ar, enctype)); |
|
} |
|
|
|
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len); |
|
} |
|
|
|
static void ath10k_htt_rx_h_undecap(struct ath10k *ar, |
|
struct sk_buff *msdu, |
|
struct ieee80211_rx_status *status, |
|
u8 first_hdr[64], |
|
enum htt_rx_mpdu_encrypt_type enctype, |
|
bool is_decrypted) |
|
{ |
|
struct htt_rx_desc *rxd; |
|
enum rx_msdu_decap_format decap; |
|
|
|
/* First msdu's decapped header: |
|
* [802.11 header] <-- padded to 4 bytes long |
|
* [crypto param] <-- padded to 4 bytes long |
|
* [amsdu header] <-- only if A-MSDU |
|
* [rfc1042/llc] |
|
* |
|
* Other (2nd, 3rd, ..) msdu's decapped header: |
|
* [amsdu header] <-- only if A-MSDU |
|
* [rfc1042/llc] |
|
*/ |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1), |
|
RX_MSDU_START_INFO1_DECAP_FORMAT); |
|
|
|
switch (decap) { |
|
case RX_MSDU_DECAP_RAW: |
|
ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype, |
|
is_decrypted, first_hdr); |
|
break; |
|
case RX_MSDU_DECAP_NATIVE_WIFI: |
|
ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr, |
|
enctype); |
|
break; |
|
case RX_MSDU_DECAP_ETHERNET2_DIX: |
|
ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype); |
|
break; |
|
case RX_MSDU_DECAP_8023_SNAP_LLC: |
|
ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr, |
|
enctype); |
|
break; |
|
} |
|
} |
|
|
|
static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb) |
|
{ |
|
struct htt_rx_desc *rxd; |
|
u32 flags, info; |
|
bool is_ip4, is_ip6; |
|
bool is_tcp, is_udp; |
|
bool ip_csum_ok, tcpudp_csum_ok; |
|
|
|
rxd = (void *)skb->data - sizeof(*rxd); |
|
flags = __le32_to_cpu(rxd->attention.flags); |
|
info = __le32_to_cpu(rxd->msdu_start.common.info1); |
|
|
|
is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO); |
|
is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO); |
|
is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO); |
|
is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO); |
|
ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL); |
|
tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL); |
|
|
|
if (!is_ip4 && !is_ip6) |
|
return CHECKSUM_NONE; |
|
if (!is_tcp && !is_udp) |
|
return CHECKSUM_NONE; |
|
if (!ip_csum_ok) |
|
return CHECKSUM_NONE; |
|
if (!tcpudp_csum_ok) |
|
return CHECKSUM_NONE; |
|
|
|
return CHECKSUM_UNNECESSARY; |
|
} |
|
|
|
static void ath10k_htt_rx_h_csum_offload(struct sk_buff *msdu) |
|
{ |
|
msdu->ip_summed = ath10k_htt_rx_get_csum_state(msdu); |
|
} |
|
|
|
static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, |
|
u16 offset, |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
u64 pn = 0; |
|
u8 *ehdr; |
|
|
|
hdr = (struct ieee80211_hdr *)(skb->data + offset); |
|
ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control); |
|
|
|
if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) { |
|
pn = ehdr[0]; |
|
pn |= (u64)ehdr[1] << 8; |
|
pn |= (u64)ehdr[4] << 16; |
|
pn |= (u64)ehdr[5] << 24; |
|
pn |= (u64)ehdr[6] << 32; |
|
pn |= (u64)ehdr[7] << 40; |
|
} |
|
return pn; |
|
} |
|
|
|
static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, |
|
struct sk_buff *skb, |
|
u16 offset) |
|
{ |
|
struct ieee80211_hdr *hdr; |
|
|
|
hdr = (struct ieee80211_hdr *)(skb->data + offset); |
|
return !is_multicast_ether_addr(hdr->addr1); |
|
} |
|
|
|
static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, |
|
struct sk_buff *skb, |
|
u16 peer_id, |
|
u16 offset, |
|
enum htt_rx_mpdu_encrypt_type enctype) |
|
{ |
|
struct ath10k_peer *peer; |
|
union htt_rx_pn_t *last_pn, new_pn = {0}; |
|
struct ieee80211_hdr *hdr; |
|
u8 tid, frag_number; |
|
u32 seq; |
|
|
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); |
|
return false; |
|
} |
|
|
|
hdr = (struct ieee80211_hdr *)(skb->data + offset); |
|
if (ieee80211_is_data_qos(hdr->frame_control)) |
|
tid = ieee80211_get_tid(hdr); |
|
else |
|
tid = ATH10K_TXRX_NON_QOS_TID; |
|
|
|
last_pn = &peer->frag_tids_last_pn[tid]; |
|
new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype); |
|
frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
|
seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; |
|
|
|
if (frag_number == 0) { |
|
last_pn->pn48 = new_pn.pn48; |
|
peer->frag_tids_seq[tid] = seq; |
|
} else { |
|
if (seq != peer->frag_tids_seq[tid]) |
|
return false; |
|
|
|
if (new_pn.pn48 != last_pn->pn48 + 1) |
|
return false; |
|
|
|
last_pn->pn48 = new_pn.pn48; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
struct ieee80211_rx_status *status, |
|
bool fill_crypt_header, |
|
u8 *rx_hdr, |
|
enum ath10k_pkt_rx_err *err, |
|
u16 peer_id, |
|
bool frag) |
|
{ |
|
struct sk_buff *first; |
|
struct sk_buff *last; |
|
struct sk_buff *msdu, *temp; |
|
struct htt_rx_desc *rxd; |
|
struct ieee80211_hdr *hdr; |
|
enum htt_rx_mpdu_encrypt_type enctype; |
|
u8 first_hdr[64]; |
|
u8 *qos; |
|
bool has_fcs_err; |
|
bool has_crypto_err; |
|
bool has_tkip_err; |
|
bool has_peer_idx_invalid; |
|
bool is_decrypted; |
|
bool is_mgmt; |
|
u32 attention; |
|
bool frag_pn_check = true, multicast_check = true; |
|
|
|
if (skb_queue_empty(amsdu)) |
|
return; |
|
|
|
first = skb_peek(amsdu); |
|
rxd = (void *)first->data - sizeof(*rxd); |
|
|
|
is_mgmt = !!(rxd->attention.flags & |
|
__cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE)); |
|
|
|
enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0), |
|
RX_MPDU_START_INFO0_ENCRYPT_TYPE); |
|
|
|
/* First MSDU's Rx descriptor in an A-MSDU contains full 802.11 |
|
* decapped header. It'll be used for undecapping of each MSDU. |
|
*/ |
|
hdr = (void *)rxd->rx_hdr_status; |
|
memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN); |
|
|
|
if (rx_hdr) |
|
memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN); |
|
|
|
/* Each A-MSDU subframe will use the original header as the base and be |
|
* reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl. |
|
*/ |
|
hdr = (void *)first_hdr; |
|
|
|
if (ieee80211_is_data_qos(hdr->frame_control)) { |
|
qos = ieee80211_get_qos_ctl(hdr); |
|
qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
|
} |
|
|
|
/* Some attention flags are valid only in the last MSDU. */ |
|
last = skb_peek_tail(amsdu); |
|
rxd = (void *)last->data - sizeof(*rxd); |
|
attention = __le32_to_cpu(rxd->attention.flags); |
|
|
|
has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR); |
|
has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR); |
|
has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR); |
|
has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID); |
|
|
|
/* Note: If hardware captures an encrypted frame that it can't decrypt, |
|
* e.g. due to fcs error, missing peer or invalid key data it will |
|
* report the frame as raw. |
|
*/ |
|
is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE && |
|
!has_fcs_err && |
|
!has_crypto_err && |
|
!has_peer_idx_invalid); |
|
|
|
/* Clear per-MPDU flags while leaving per-PPDU flags intact. */ |
|
status->flag &= ~(RX_FLAG_FAILED_FCS_CRC | |
|
RX_FLAG_MMIC_ERROR | |
|
RX_FLAG_DECRYPTED | |
|
RX_FLAG_IV_STRIPPED | |
|
RX_FLAG_ONLY_MONITOR | |
|
RX_FLAG_MMIC_STRIPPED); |
|
|
|
if (has_fcs_err) |
|
status->flag |= RX_FLAG_FAILED_FCS_CRC; |
|
|
|
if (has_tkip_err) |
|
status->flag |= RX_FLAG_MMIC_ERROR; |
|
|
|
if (err) { |
|
if (has_fcs_err) |
|
*err = ATH10K_PKT_RX_ERR_FCS; |
|
else if (has_tkip_err) |
|
*err = ATH10K_PKT_RX_ERR_TKIP; |
|
else if (has_crypto_err) |
|
*err = ATH10K_PKT_RX_ERR_CRYPT; |
|
else if (has_peer_idx_invalid) |
|
*err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL; |
|
} |
|
|
|
/* Firmware reports all necessary management frames via WMI already. |
|
* They are not reported to monitor interfaces at all so pass the ones |
|
* coming via HTT to monitor interfaces instead. This simplifies |
|
* matters a lot. |
|
*/ |
|
if (is_mgmt) |
|
status->flag |= RX_FLAG_ONLY_MONITOR; |
|
|
|
if (is_decrypted) { |
|
status->flag |= RX_FLAG_DECRYPTED; |
|
|
|
if (likely(!is_mgmt)) |
|
status->flag |= RX_FLAG_MMIC_STRIPPED; |
|
|
|
if (fill_crypt_header) |
|
status->flag |= RX_FLAG_MIC_STRIPPED | |
|
RX_FLAG_ICV_STRIPPED; |
|
else |
|
status->flag |= RX_FLAG_IV_STRIPPED; |
|
} |
|
|
|
skb_queue_walk(amsdu, msdu) { |
|
if (frag && !fill_crypt_header && is_decrypted && |
|
enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) |
|
frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar, |
|
msdu, |
|
peer_id, |
|
0, |
|
enctype); |
|
|
|
if (frag) |
|
multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, |
|
msdu, |
|
0); |
|
|
|
if (!frag_pn_check || !multicast_check) { |
|
/* Discard the fragment with invalid PN or multicast DA |
|
*/ |
|
temp = msdu->prev; |
|
__skb_unlink(msdu, amsdu); |
|
dev_kfree_skb_any(msdu); |
|
msdu = temp; |
|
frag_pn_check = true; |
|
multicast_check = true; |
|
continue; |
|
} |
|
|
|
ath10k_htt_rx_h_csum_offload(msdu); |
|
|
|
if (frag && !fill_crypt_header && |
|
enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) |
|
status->flag &= ~RX_FLAG_MMIC_STRIPPED; |
|
|
|
ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, |
|
is_decrypted); |
|
|
|
/* Undecapping involves copying the original 802.11 header back |
|
* to sk_buff. If frame is protected and hardware has decrypted |
|
* it then remove the protected bit. |
|
*/ |
|
if (!is_decrypted) |
|
continue; |
|
if (is_mgmt) |
|
continue; |
|
|
|
if (fill_crypt_header) |
|
continue; |
|
|
|
hdr = (void *)msdu->data; |
|
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
|
|
|
if (frag && !fill_crypt_header && |
|
enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA) |
|
status->flag &= ~RX_FLAG_IV_STRIPPED & |
|
~RX_FLAG_MMIC_STRIPPED; |
|
} |
|
} |
|
|
|
static void ath10k_htt_rx_h_enqueue(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
struct ieee80211_rx_status *status) |
|
{ |
|
struct sk_buff *msdu; |
|
struct sk_buff *first_subframe; |
|
|
|
first_subframe = skb_peek(amsdu); |
|
|
|
while ((msdu = __skb_dequeue(amsdu))) { |
|
/* Setup per-MSDU flags */ |
|
if (skb_queue_empty(amsdu)) |
|
status->flag &= ~RX_FLAG_AMSDU_MORE; |
|
else |
|
status->flag |= RX_FLAG_AMSDU_MORE; |
|
|
|
if (msdu == first_subframe) { |
|
first_subframe = NULL; |
|
status->flag &= ~RX_FLAG_ALLOW_SAME_PN; |
|
} else { |
|
status->flag |= RX_FLAG_ALLOW_SAME_PN; |
|
} |
|
|
|
ath10k_htt_rx_h_queue_msdu(ar, status, msdu); |
|
} |
|
} |
|
|
|
static int ath10k_unchain_msdu(struct sk_buff_head *amsdu, |
|
unsigned long *unchain_cnt) |
|
{ |
|
struct sk_buff *skb, *first; |
|
int space; |
|
int total_len = 0; |
|
int amsdu_len = skb_queue_len(amsdu); |
|
|
|
/* TODO: Might could optimize this by using |
|
* skb_try_coalesce or similar method to |
|
* decrease copying, or maybe get mac80211 to |
|
* provide a way to just receive a list of |
|
* skb? |
|
*/ |
|
|
|
first = __skb_dequeue(amsdu); |
|
|
|
/* Allocate total length all at once. */ |
|
skb_queue_walk(amsdu, skb) |
|
total_len += skb->len; |
|
|
|
space = total_len - skb_tailroom(first); |
|
if ((space > 0) && |
|
(pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) { |
|
/* TODO: bump some rx-oom error stat */ |
|
/* put it back together so we can free the |
|
* whole list at once. |
|
*/ |
|
__skb_queue_head(amsdu, first); |
|
return -1; |
|
} |
|
|
|
/* Walk list again, copying contents into |
|
* msdu_head |
|
*/ |
|
while ((skb = __skb_dequeue(amsdu))) { |
|
skb_copy_from_linear_data(skb, skb_put(first, skb->len), |
|
skb->len); |
|
dev_kfree_skb_any(skb); |
|
} |
|
|
|
__skb_queue_head(amsdu, first); |
|
|
|
*unchain_cnt += amsdu_len - 1; |
|
|
|
return 0; |
|
} |
|
|
|
static void ath10k_htt_rx_h_unchain(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
unsigned long *drop_cnt, |
|
unsigned long *unchain_cnt) |
|
{ |
|
struct sk_buff *first; |
|
struct htt_rx_desc *rxd; |
|
enum rx_msdu_decap_format decap; |
|
|
|
first = skb_peek(amsdu); |
|
rxd = (void *)first->data - sizeof(*rxd); |
|
decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1), |
|
RX_MSDU_START_INFO1_DECAP_FORMAT); |
|
|
|
/* FIXME: Current unchaining logic can only handle simple case of raw |
|
* msdu chaining. If decapping is other than raw the chaining may be |
|
* more complex and this isn't handled by the current code. Don't even |
|
* try re-constructing such frames - it'll be pretty much garbage. |
|
*/ |
|
if (decap != RX_MSDU_DECAP_RAW || |
|
skb_queue_len(amsdu) != 1 + rxd->frag_info.ring2_more_count) { |
|
*drop_cnt += skb_queue_len(amsdu); |
|
__skb_queue_purge(amsdu); |
|
return; |
|
} |
|
|
|
ath10k_unchain_msdu(amsdu, unchain_cnt); |
|
} |
|
|
|
static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar, |
|
struct sk_buff_head *amsdu) |
|
{ |
|
u8 *subframe_hdr; |
|
struct sk_buff *first; |
|
bool is_first, is_last; |
|
struct htt_rx_desc *rxd; |
|
struct ieee80211_hdr *hdr; |
|
size_t hdr_len, crypto_len; |
|
enum htt_rx_mpdu_encrypt_type enctype; |
|
int bytes_aligned = ar->hw_params.decap_align_bytes; |
|
|
|
first = skb_peek(amsdu); |
|
|
|
rxd = (void *)first->data - sizeof(*rxd); |
|
hdr = (void *)rxd->rx_hdr_status; |
|
|
|
is_first = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)); |
|
is_last = !!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)); |
|
|
|
/* Return in case of non-aggregated msdu */ |
|
if (is_first && is_last) |
|
return true; |
|
|
|
/* First msdu flag is not set for the first msdu of the list */ |
|
if (!is_first) |
|
return false; |
|
|
|
enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0), |
|
RX_MPDU_START_INFO0_ENCRYPT_TYPE); |
|
|
|
hdr_len = ieee80211_hdrlen(hdr->frame_control); |
|
crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype); |
|
|
|
subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) + |
|
crypto_len; |
|
|
|
/* Validate if the amsdu has a proper first subframe. |
|
* There are chances a single msdu can be received as amsdu when |
|
* the unauthenticated amsdu flag of a QoS header |
|
* gets flipped in non-SPP AMSDU's, in such cases the first |
|
* subframe has llc/snap header in place of a valid da. |
|
* return false if the da matches rfc1042 pattern |
|
*/ |
|
if (ether_addr_equal(subframe_hdr, rfc1042_header)) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
struct ieee80211_rx_status *rx_status) |
|
{ |
|
if (!rx_status->freq) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n"); |
|
return false; |
|
} |
|
|
|
if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n"); |
|
return false; |
|
} |
|
|
|
if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n"); |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
static void ath10k_htt_rx_h_filter(struct ath10k *ar, |
|
struct sk_buff_head *amsdu, |
|
struct ieee80211_rx_status *rx_status, |
|
unsigned long *drop_cnt) |
|
{ |
|
if (skb_queue_empty(amsdu)) |
|
return; |
|
|
|
if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status)) |
|
return; |
|
|
|
if (drop_cnt) |
|
*drop_cnt += skb_queue_len(amsdu); |
|
|
|
__skb_queue_purge(amsdu); |
|
} |
|
|
|
static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct ieee80211_rx_status *rx_status = &htt->rx_status; |
|
struct sk_buff_head amsdu; |
|
int ret; |
|
unsigned long drop_cnt = 0; |
|
unsigned long unchain_cnt = 0; |
|
unsigned long drop_cnt_filter = 0; |
|
unsigned long msdus_to_queue, num_msdus; |
|
enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX; |
|
u8 first_hdr[RX_HTT_HDR_STATUS_LEN]; |
|
|
|
__skb_queue_head_init(&amsdu); |
|
|
|
spin_lock_bh(&htt->rx_ring.lock); |
|
if (htt->rx_confused) { |
|
spin_unlock_bh(&htt->rx_ring.lock); |
|
return -EIO; |
|
} |
|
ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu); |
|
spin_unlock_bh(&htt->rx_ring.lock); |
|
|
|
if (ret < 0) { |
|
ath10k_warn(ar, "rx ring became corrupted: %d\n", ret); |
|
__skb_queue_purge(&amsdu); |
|
/* FIXME: It's probably a good idea to reboot the |
|
* device instead of leaving it inoperable. |
|
*/ |
|
htt->rx_confused = true; |
|
return ret; |
|
} |
|
|
|
num_msdus = skb_queue_len(&amsdu); |
|
|
|
ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); |
|
|
|
/* only for ret = 1 indicates chained msdus */ |
|
if (ret > 0) |
|
ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt); |
|
|
|
ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter); |
|
ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0, |
|
false); |
|
msdus_to_queue = skb_queue_len(&amsdu); |
|
ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); |
|
|
|
ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err, |
|
unchain_cnt, drop_cnt, drop_cnt_filter, |
|
msdus_to_queue); |
|
|
|
return 0; |
|
} |
|
|
|
static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc, |
|
union htt_rx_pn_t *pn, |
|
int pn_len_bits) |
|
{ |
|
switch (pn_len_bits) { |
|
case 48: |
|
pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) + |
|
((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32); |
|
break; |
|
case 24: |
|
pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0); |
|
break; |
|
} |
|
} |
|
|
|
static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn, |
|
union htt_rx_pn_t *old_pn) |
|
{ |
|
return ((new_pn->pn48 & 0xffffffffffffULL) <= |
|
(old_pn->pn48 & 0xffffffffffffULL)); |
|
} |
|
|
|
static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar, |
|
struct ath10k_peer *peer, |
|
struct htt_rx_indication_hl *rx) |
|
{ |
|
bool last_pn_valid, pn_invalid = false; |
|
enum htt_txrx_sec_cast_type sec_index; |
|
enum htt_security_types sec_type; |
|
union htt_rx_pn_t new_pn = {0}; |
|
struct htt_hl_rx_desc *rx_desc; |
|
union htt_rx_pn_t *last_pn; |
|
u32 rx_desc_info, tid; |
|
int num_mpdu_ranges; |
|
|
|
lockdep_assert_held(&ar->data_lock); |
|
|
|
if (!peer) |
|
return false; |
|
|
|
if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU)) |
|
return false; |
|
|
|
num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), |
|
HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); |
|
|
|
rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; |
|
rx_desc_info = __le32_to_cpu(rx_desc->info); |
|
|
|
if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) |
|
return false; |
|
|
|
tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); |
|
last_pn_valid = peer->tids_last_pn_valid[tid]; |
|
last_pn = &peer->tids_last_pn[tid]; |
|
|
|
if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) |
|
sec_index = HTT_TXRX_SEC_MCAST; |
|
else |
|
sec_index = HTT_TXRX_SEC_UCAST; |
|
|
|
sec_type = peer->rx_pn[sec_index].sec_type; |
|
ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); |
|
|
|
if (sec_type != HTT_SECURITY_AES_CCMP && |
|
sec_type != HTT_SECURITY_TKIP && |
|
sec_type != HTT_SECURITY_TKIP_NOMIC) |
|
return false; |
|
|
|
if (last_pn_valid) |
|
pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn); |
|
else |
|
peer->tids_last_pn_valid[tid] = true; |
|
|
|
if (!pn_invalid) |
|
last_pn->pn48 = new_pn.pn48; |
|
|
|
return pn_invalid; |
|
} |
|
|
|
static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt, |
|
struct htt_rx_indication_hl *rx, |
|
struct sk_buff *skb, |
|
enum htt_rx_pn_check_type check_pn_type, |
|
enum htt_rx_tkip_demic_type tkip_mic_type) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct ath10k_peer *peer; |
|
struct htt_rx_indication_mpdu_range *mpdu_ranges; |
|
struct fw_rx_desc_hl *fw_desc; |
|
enum htt_txrx_sec_cast_type sec_index; |
|
enum htt_security_types sec_type; |
|
union htt_rx_pn_t new_pn = {0}; |
|
struct htt_hl_rx_desc *rx_desc; |
|
struct ieee80211_hdr *hdr; |
|
struct ieee80211_rx_status *rx_status; |
|
u16 peer_id; |
|
u8 rx_desc_len; |
|
int num_mpdu_ranges; |
|
size_t tot_hdr_len; |
|
struct ieee80211_channel *ch; |
|
bool pn_invalid, qos, first_msdu; |
|
u32 tid, rx_desc_info; |
|
|
|
peer_id = __le16_to_cpu(rx->hdr.peer_id); |
|
tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
spin_unlock_bh(&ar->data_lock); |
|
if (!peer && peer_id != HTT_INVALID_PEERID) |
|
ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id); |
|
|
|
if (!peer) |
|
return true; |
|
|
|
num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), |
|
HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); |
|
mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx); |
|
fw_desc = &rx->fw_desc; |
|
rx_desc_len = fw_desc->len; |
|
|
|
if (fw_desc->u.bits.discard) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); |
|
goto err; |
|
} |
|
|
|
/* I have not yet seen any case where num_mpdu_ranges > 1. |
|
* qcacld does not seem handle that case either, so we introduce the |
|
* same limitiation here as well. |
|
*/ |
|
if (num_mpdu_ranges > 1) |
|
ath10k_warn(ar, |
|
"Unsupported number of MPDU ranges: %d, ignoring all but the first\n", |
|
num_mpdu_ranges); |
|
|
|
if (mpdu_ranges->mpdu_range_status != |
|
HTT_RX_IND_MPDU_STATUS_OK && |
|
mpdu_ranges->mpdu_range_status != |
|
HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n", |
|
mpdu_ranges->mpdu_range_status); |
|
goto err; |
|
} |
|
|
|
rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges]; |
|
rx_desc_info = __le32_to_cpu(rx_desc->info); |
|
|
|
if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST)) |
|
sec_index = HTT_TXRX_SEC_MCAST; |
|
else |
|
sec_index = HTT_TXRX_SEC_UCAST; |
|
|
|
sec_type = peer->rx_pn[sec_index].sec_type; |
|
first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU; |
|
|
|
ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); |
|
|
|
if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) { |
|
spin_lock_bh(&ar->data_lock); |
|
pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx); |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
if (pn_invalid) |
|
goto err; |
|
} |
|
|
|
/* Strip off all headers before the MAC header before delivery to |
|
* mac80211 |
|
*/ |
|
tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) + |
|
sizeof(rx->ppdu) + sizeof(rx->prefix) + |
|
sizeof(rx->fw_desc) + |
|
sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len; |
|
|
|
skb_pull(skb, tot_hdr_len); |
|
|
|
hdr = (struct ieee80211_hdr *)skb->data; |
|
qos = ieee80211_is_data_qos(hdr->frame_control); |
|
|
|
rx_status = IEEE80211_SKB_RXCB(skb); |
|
memset(rx_status, 0, sizeof(*rx_status)); |
|
|
|
if (rx->ppdu.combined_rssi == 0) { |
|
/* SDIO firmware does not provide signal */ |
|
rx_status->signal = 0; |
|
rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; |
|
} else { |
|
rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR + |
|
rx->ppdu.combined_rssi; |
|
rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL; |
|
} |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
ch = ar->scan_channel; |
|
if (!ch) |
|
ch = ar->rx_channel; |
|
if (!ch) |
|
ch = ath10k_htt_rx_h_any_channel(ar); |
|
if (!ch) |
|
ch = ar->tgt_oper_chan; |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
if (ch) { |
|
rx_status->band = ch->band; |
|
rx_status->freq = ch->center_freq; |
|
} |
|
if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU) |
|
rx_status->flag &= ~RX_FLAG_AMSDU_MORE; |
|
else |
|
rx_status->flag |= RX_FLAG_AMSDU_MORE; |
|
|
|
/* Not entirely sure about this, but all frames from the chipset has |
|
* the protected flag set even though they have already been decrypted. |
|
* Unmasking this flag is necessary in order for mac80211 not to drop |
|
* the frame. |
|
* TODO: Verify this is always the case or find out a way to check |
|
* if there has been hw decryption. |
|
*/ |
|
if (ieee80211_has_protected(hdr->frame_control)) { |
|
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
|
rx_status->flag |= RX_FLAG_DECRYPTED | |
|
RX_FLAG_IV_STRIPPED | |
|
RX_FLAG_MMIC_STRIPPED; |
|
|
|
if (tid < IEEE80211_NUM_TIDS && |
|
first_msdu && |
|
check_pn_type == HTT_RX_PN_CHECK && |
|
(sec_type == HTT_SECURITY_AES_CCMP || |
|
sec_type == HTT_SECURITY_TKIP || |
|
sec_type == HTT_SECURITY_TKIP_NOMIC)) { |
|
u8 offset, *ivp, i; |
|
s8 keyidx = 0; |
|
__le64 pn48 = cpu_to_le64(new_pn.pn48); |
|
|
|
hdr = (struct ieee80211_hdr *)skb->data; |
|
offset = ieee80211_hdrlen(hdr->frame_control); |
|
hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
|
rx_status->flag &= ~RX_FLAG_IV_STRIPPED; |
|
|
|
memmove(skb->data - IEEE80211_CCMP_HDR_LEN, |
|
skb->data, offset); |
|
skb_push(skb, IEEE80211_CCMP_HDR_LEN); |
|
ivp = skb->data + offset; |
|
memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN); |
|
/* Ext IV */ |
|
ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV; |
|
|
|
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { |
|
if (peer->keys[i] && |
|
peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
|
keyidx = peer->keys[i]->keyidx; |
|
} |
|
|
|
/* Key ID */ |
|
ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6; |
|
|
|
if (sec_type == HTT_SECURITY_AES_CCMP) { |
|
rx_status->flag |= RX_FLAG_MIC_STRIPPED; |
|
/* pn 0, pn 1 */ |
|
memcpy(skb->data + offset, &pn48, 2); |
|
/* pn 1, pn 3 , pn 34 , pn 5 */ |
|
memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); |
|
} else { |
|
rx_status->flag |= RX_FLAG_ICV_STRIPPED; |
|
/* TSC 0 */ |
|
memcpy(skb->data + offset + 2, &pn48, 1); |
|
/* TSC 1 */ |
|
memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1); |
|
/* TSC 2 , TSC 3 , TSC 4 , TSC 5*/ |
|
memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4); |
|
} |
|
} |
|
} |
|
|
|
if (tkip_mic_type == HTT_RX_TKIP_MIC) |
|
rx_status->flag &= ~RX_FLAG_IV_STRIPPED & |
|
~RX_FLAG_MMIC_STRIPPED; |
|
|
|
if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) |
|
rx_status->flag |= RX_FLAG_MMIC_ERROR; |
|
|
|
if (!qos && tid < IEEE80211_NUM_TIDS) { |
|
u8 offset; |
|
__le16 qos_ctrl = 0; |
|
|
|
hdr = (struct ieee80211_hdr *)skb->data; |
|
offset = ieee80211_hdrlen(hdr->frame_control); |
|
|
|
hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
|
memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset); |
|
skb_push(skb, IEEE80211_QOS_CTL_LEN); |
|
qos_ctrl = cpu_to_le16(tid); |
|
memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN); |
|
} |
|
|
|
if (ar->napi.dev) |
|
ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi); |
|
else |
|
ieee80211_rx_ni(ar->hw, skb); |
|
|
|
/* We have delivered the skb to the upper layers (mac80211) so we |
|
* must not free it. |
|
*/ |
|
return false; |
|
err: |
|
/* Tell the caller that it must free the skb since we have not |
|
* consumed it |
|
*/ |
|
return true; |
|
} |
|
|
|
static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb, |
|
u16 head_len, |
|
u16 hdr_len) |
|
{ |
|
u8 *ivp, *orig_hdr; |
|
|
|
orig_hdr = skb->data; |
|
ivp = orig_hdr + hdr_len + head_len; |
|
|
|
/* the ExtIV bit is always set to 1 for TKIP */ |
|
if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) |
|
return -EINVAL; |
|
|
|
memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); |
|
skb_pull(skb, IEEE80211_TKIP_IV_LEN); |
|
skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN); |
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb, |
|
u16 head_len, |
|
u16 hdr_len) |
|
{ |
|
u8 *ivp, *orig_hdr; |
|
|
|
orig_hdr = skb->data; |
|
ivp = orig_hdr + hdr_len + head_len; |
|
|
|
/* the ExtIV bit is always set to 1 for TKIP */ |
|
if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) |
|
return -EINVAL; |
|
|
|
memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len); |
|
skb_pull(skb, IEEE80211_TKIP_IV_LEN); |
|
skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN); |
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb, |
|
u16 head_len, |
|
u16 hdr_len) |
|
{ |
|
u8 *ivp, *orig_hdr; |
|
|
|
orig_hdr = skb->data; |
|
ivp = orig_hdr + hdr_len + head_len; |
|
|
|
/* the ExtIV bit is always set to 1 for CCMP */ |
|
if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV)) |
|
return -EINVAL; |
|
|
|
skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN); |
|
memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len); |
|
skb_pull(skb, IEEE80211_CCMP_HDR_LEN); |
|
return 0; |
|
} |
|
|
|
static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb, |
|
u16 head_len, |
|
u16 hdr_len) |
|
{ |
|
u8 *orig_hdr; |
|
|
|
orig_hdr = skb->data; |
|
|
|
memmove(orig_hdr + IEEE80211_WEP_IV_LEN, |
|
orig_hdr, head_len + hdr_len); |
|
skb_pull(skb, IEEE80211_WEP_IV_LEN); |
|
skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN); |
|
return 0; |
|
} |
|
|
|
static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt, |
|
struct htt_rx_fragment_indication *rx, |
|
struct sk_buff *skb) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC; |
|
enum htt_txrx_sec_cast_type sec_index; |
|
struct htt_rx_indication_hl *rx_hl; |
|
enum htt_security_types sec_type; |
|
u32 tid, frag, seq, rx_desc_info; |
|
union htt_rx_pn_t new_pn = {0}; |
|
struct htt_hl_rx_desc *rx_desc; |
|
u16 peer_id, sc, hdr_space; |
|
union htt_rx_pn_t *last_pn; |
|
struct ieee80211_hdr *hdr; |
|
int ret, num_mpdu_ranges; |
|
struct ath10k_peer *peer; |
|
struct htt_resp *resp; |
|
size_t tot_hdr_len; |
|
|
|
resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN); |
|
skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN); |
|
skb_trim(skb, skb->len - FCS_LEN); |
|
|
|
peer_id = __le16_to_cpu(rx->peer_id); |
|
rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl); |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id); |
|
goto err; |
|
} |
|
|
|
num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1), |
|
HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); |
|
|
|
tot_hdr_len = sizeof(struct htt_resp_hdr) + |
|
sizeof(rx_hl->hdr) + |
|
sizeof(rx_hl->ppdu) + |
|
sizeof(rx_hl->prefix) + |
|
sizeof(rx_hl->fw_desc) + |
|
sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges; |
|
|
|
tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); |
|
rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len); |
|
rx_desc_info = __le32_to_cpu(rx_desc->info); |
|
|
|
hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); |
|
|
|
if (is_multicast_ether_addr(hdr->addr1)) { |
|
/* Discard the fragment with multicast DA */ |
|
goto err; |
|
} |
|
|
|
if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) { |
|
spin_unlock_bh(&ar->data_lock); |
|
return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, |
|
HTT_RX_NON_PN_CHECK, |
|
HTT_RX_NON_TKIP_MIC); |
|
} |
|
|
|
if (ieee80211_has_retry(hdr->frame_control)) |
|
goto err; |
|
|
|
hdr_space = ieee80211_hdrlen(hdr->frame_control); |
|
sc = __le16_to_cpu(hdr->seq_ctrl); |
|
seq = (sc & IEEE80211_SCTL_SEQ) >> 4; |
|
frag = sc & IEEE80211_SCTL_FRAG; |
|
|
|
sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ? |
|
HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST; |
|
sec_type = peer->rx_pn[sec_index].sec_type; |
|
ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len); |
|
|
|
switch (sec_type) { |
|
case HTT_SECURITY_TKIP: |
|
tkip_mic = HTT_RX_TKIP_MIC; |
|
ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb, |
|
tot_hdr_len + |
|
rx_hl->fw_desc.len, |
|
hdr_space); |
|
if (ret) |
|
goto err; |
|
break; |
|
case HTT_SECURITY_TKIP_NOMIC: |
|
ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb, |
|
tot_hdr_len + |
|
rx_hl->fw_desc.len, |
|
hdr_space); |
|
if (ret) |
|
goto err; |
|
break; |
|
case HTT_SECURITY_AES_CCMP: |
|
ret = ath10k_htt_rx_frag_ccmp_decap(skb, |
|
tot_hdr_len + rx_hl->fw_desc.len, |
|
hdr_space); |
|
if (ret) |
|
goto err; |
|
break; |
|
case HTT_SECURITY_WEP128: |
|
case HTT_SECURITY_WEP104: |
|
case HTT_SECURITY_WEP40: |
|
ret = ath10k_htt_rx_frag_wep_decap(skb, |
|
tot_hdr_len + rx_hl->fw_desc.len, |
|
hdr_space); |
|
if (ret) |
|
goto err; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
resp = (struct htt_resp *)(skb->data); |
|
|
|
if (sec_type != HTT_SECURITY_AES_CCMP && |
|
sec_type != HTT_SECURITY_TKIP && |
|
sec_type != HTT_SECURITY_TKIP_NOMIC) { |
|
spin_unlock_bh(&ar->data_lock); |
|
return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, |
|
HTT_RX_NON_PN_CHECK, |
|
HTT_RX_NON_TKIP_MIC); |
|
} |
|
|
|
last_pn = &peer->frag_tids_last_pn[tid]; |
|
|
|
if (frag == 0) { |
|
if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl)) |
|
goto err; |
|
|
|
last_pn->pn48 = new_pn.pn48; |
|
peer->frag_tids_seq[tid] = seq; |
|
} else if (sec_type == HTT_SECURITY_AES_CCMP) { |
|
if (seq != peer->frag_tids_seq[tid]) |
|
goto err; |
|
|
|
if (new_pn.pn48 != last_pn->pn48 + 1) |
|
goto err; |
|
|
|
last_pn->pn48 = new_pn.pn48; |
|
last_pn = &peer->tids_last_pn[tid]; |
|
last_pn->pn48 = new_pn.pn48; |
|
} |
|
|
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, |
|
HTT_RX_NON_PN_CHECK, tkip_mic); |
|
|
|
err: |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
/* Tell the caller that it must free the skb since we have not |
|
* consumed it |
|
*/ |
|
return true; |
|
} |
|
|
|
static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt, |
|
struct htt_rx_indication *rx) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
struct htt_rx_indication_mpdu_range *mpdu_ranges; |
|
int num_mpdu_ranges; |
|
int i, mpdu_count = 0; |
|
u16 peer_id; |
|
u8 tid; |
|
|
|
num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1), |
|
HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES); |
|
peer_id = __le16_to_cpu(rx->hdr.peer_id); |
|
tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID); |
|
|
|
mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx); |
|
|
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ", |
|
rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges)); |
|
|
|
for (i = 0; i < num_mpdu_ranges; i++) |
|
mpdu_count += mpdu_ranges[i].mpdu_count; |
|
|
|
atomic_add(mpdu_count, &htt->num_mpdus_ready); |
|
|
|
ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges, |
|
num_mpdu_ranges); |
|
} |
|
|
|
static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, |
|
struct sk_buff *skb) |
|
{ |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct htt_resp *resp = (struct htt_resp *)skb->data; |
|
struct htt_tx_done tx_done = {}; |
|
int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS); |
|
__le16 msdu_id, *msdus; |
|
bool rssi_enabled = false; |
|
u8 msdu_count = 0, num_airtime_records, tid; |
|
int i, htt_pad = 0; |
|
struct htt_data_tx_compl_ppdu_dur *ppdu_info; |
|
struct ath10k_peer *peer; |
|
u16 ppdu_info_offset = 0, peer_id; |
|
u32 tx_duration; |
|
|
|
switch (status) { |
|
case HTT_DATA_TX_STATUS_NO_ACK: |
|
tx_done.status = HTT_TX_COMPL_STATE_NOACK; |
|
break; |
|
case HTT_DATA_TX_STATUS_OK: |
|
tx_done.status = HTT_TX_COMPL_STATE_ACK; |
|
break; |
|
case HTT_DATA_TX_STATUS_DISCARD: |
|
case HTT_DATA_TX_STATUS_POSTPONE: |
|
case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL: |
|
tx_done.status = HTT_TX_COMPL_STATE_DISCARD; |
|
break; |
|
default: |
|
ath10k_warn(ar, "unhandled tx completion status %d\n", status); |
|
tx_done.status = HTT_TX_COMPL_STATE_DISCARD; |
|
break; |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n", |
|
resp->data_tx_completion.num_msdus); |
|
|
|
msdu_count = resp->data_tx_completion.num_msdus; |
|
msdus = resp->data_tx_completion.msdus; |
|
rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp); |
|
|
|
if (rssi_enabled) |
|
htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params, |
|
resp); |
|
|
|
for (i = 0; i < msdu_count; i++) { |
|
msdu_id = msdus[i]; |
|
tx_done.msdu_id = __le16_to_cpu(msdu_id); |
|
|
|
if (rssi_enabled) { |
|
/* Total no of MSDUs should be even, |
|
* if odd MSDUs are sent firmware fills |
|
* last msdu id with 0xffff |
|
*/ |
|
if (msdu_count & 0x01) { |
|
msdu_id = msdus[msdu_count + i + 1 + htt_pad]; |
|
tx_done.ack_rssi = __le16_to_cpu(msdu_id); |
|
} else { |
|
msdu_id = msdus[msdu_count + i + htt_pad]; |
|
tx_done.ack_rssi = __le16_to_cpu(msdu_id); |
|
} |
|
} |
|
|
|
/* kfifo_put: In practice firmware shouldn't fire off per-CE |
|
* interrupt and main interrupt (MSI/-X range case) for the same |
|
* HTC service so it should be safe to use kfifo_put w/o lock. |
|
* |
|
* From kfifo_put() documentation: |
|
* Note that with only one concurrent reader and one concurrent |
|
* writer, you don't need extra locking to use these macro. |
|
*/ |
|
if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) { |
|
ath10k_txrx_tx_unref(htt, &tx_done); |
|
} else if (!kfifo_put(&htt->txdone_fifo, tx_done)) { |
|
ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n", |
|
tx_done.msdu_id, tx_done.status); |
|
ath10k_txrx_tx_unref(htt, &tx_done); |
|
} |
|
} |
|
|
|
if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT)) |
|
return; |
|
|
|
ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count; |
|
|
|
if (rssi_enabled) |
|
ppdu_info_offset += ppdu_info_offset; |
|
|
|
if (resp->data_tx_completion.flags2 & |
|
(HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT)) |
|
ppdu_info_offset += 2; |
|
|
|
ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset]; |
|
num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK, |
|
__le32_to_cpu(ppdu_info->info0)); |
|
|
|
for (i = 0; i < num_airtime_records; i++) { |
|
struct htt_data_tx_ppdu_dur *ppdu_dur; |
|
u32 info0; |
|
|
|
ppdu_dur = &ppdu_info->ppdu_dur[i]; |
|
info0 = __le32_to_cpu(ppdu_dur->info0); |
|
|
|
peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK, |
|
info0); |
|
rcu_read_lock(); |
|
spin_lock_bh(&ar->data_lock); |
|
|
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer || !peer->sta) { |
|
spin_unlock_bh(&ar->data_lock); |
|
rcu_read_unlock(); |
|
continue; |
|
} |
|
|
|
tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) & |
|
IEEE80211_QOS_CTL_TID_MASK; |
|
tx_duration = __le32_to_cpu(ppdu_dur->tx_duration); |
|
|
|
ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0); |
|
|
|
spin_unlock_bh(&ar->data_lock); |
|
rcu_read_unlock(); |
|
} |
|
} |
|
|
|
static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp) |
|
{ |
|
struct htt_rx_addba *ev = &resp->rx_addba; |
|
struct ath10k_peer *peer; |
|
struct ath10k_vif *arvif; |
|
u16 info0, tid, peer_id; |
|
|
|
info0 = __le16_to_cpu(ev->info0); |
|
tid = MS(info0, HTT_RX_BA_INFO0_TID); |
|
peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx addba tid %u peer_id %u size %u\n", |
|
tid, peer_id, ev->window_size); |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer) { |
|
ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", |
|
peer_id); |
|
spin_unlock_bh(&ar->data_lock); |
|
return; |
|
} |
|
|
|
arvif = ath10k_get_arvif(ar, peer->vdev_id); |
|
if (!arvif) { |
|
ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", |
|
peer->vdev_id); |
|
spin_unlock_bh(&ar->data_lock); |
|
return; |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx start rx ba session sta %pM tid %u size %u\n", |
|
peer->addr, tid, ev->window_size); |
|
|
|
ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid); |
|
spin_unlock_bh(&ar->data_lock); |
|
} |
|
|
|
static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp) |
|
{ |
|
struct htt_rx_delba *ev = &resp->rx_delba; |
|
struct ath10k_peer *peer; |
|
struct ath10k_vif *arvif; |
|
u16 info0, tid, peer_id; |
|
|
|
info0 = __le16_to_cpu(ev->info0); |
|
tid = MS(info0, HTT_RX_BA_INFO0_TID); |
|
peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx delba tid %u peer_id %u\n", |
|
tid, peer_id); |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer) { |
|
ath10k_warn(ar, "received addba event for invalid peer_id: %u\n", |
|
peer_id); |
|
spin_unlock_bh(&ar->data_lock); |
|
return; |
|
} |
|
|
|
arvif = ath10k_get_arvif(ar, peer->vdev_id); |
|
if (!arvif) { |
|
ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n", |
|
peer->vdev_id); |
|
spin_unlock_bh(&ar->data_lock); |
|
return; |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx stop rx ba session sta %pM tid %u\n", |
|
peer->addr, tid); |
|
|
|
ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid); |
|
spin_unlock_bh(&ar->data_lock); |
|
} |
|
|
|
static int ath10k_htt_rx_extract_amsdu(struct sk_buff_head *list, |
|
struct sk_buff_head *amsdu) |
|
{ |
|
struct sk_buff *msdu; |
|
struct htt_rx_desc *rxd; |
|
|
|
if (skb_queue_empty(list)) |
|
return -ENOBUFS; |
|
|
|
if (WARN_ON(!skb_queue_empty(amsdu))) |
|
return -EINVAL; |
|
|
|
while ((msdu = __skb_dequeue(list))) { |
|
__skb_queue_tail(amsdu, msdu); |
|
|
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
if (rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU)) |
|
break; |
|
} |
|
|
|
msdu = skb_peek_tail(amsdu); |
|
rxd = (void *)msdu->data - sizeof(*rxd); |
|
if (!(rxd->msdu_end.common.info0 & |
|
__cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) { |
|
skb_queue_splice_init(amsdu, list); |
|
return -EAGAIN; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
|
|
|
if (!ieee80211_has_protected(hdr->frame_control)) |
|
return; |
|
|
|
/* Offloaded frames are already decrypted but firmware insists they are |
|
* protected in the 802.11 header. Strip the flag. Otherwise mac80211 |
|
* will drop the frame. |
|
*/ |
|
|
|
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
|
status->flag |= RX_FLAG_DECRYPTED | |
|
RX_FLAG_IV_STRIPPED | |
|
RX_FLAG_MMIC_STRIPPED; |
|
} |
|
|
|
static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar, |
|
struct sk_buff_head *list) |
|
{ |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct ieee80211_rx_status *status = &htt->rx_status; |
|
struct htt_rx_offload_msdu *rx; |
|
struct sk_buff *msdu; |
|
size_t offset; |
|
|
|
while ((msdu = __skb_dequeue(list))) { |
|
/* Offloaded frames don't have Rx descriptor. Instead they have |
|
* a short meta information header. |
|
*/ |
|
|
|
rx = (void *)msdu->data; |
|
|
|
skb_put(msdu, sizeof(*rx)); |
|
skb_pull(msdu, sizeof(*rx)); |
|
|
|
if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) { |
|
ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n"); |
|
dev_kfree_skb_any(msdu); |
|
continue; |
|
} |
|
|
|
skb_put(msdu, __le16_to_cpu(rx->msdu_len)); |
|
|
|
/* Offloaded rx header length isn't multiple of 2 nor 4 so the |
|
* actual payload is unaligned. Align the frame. Otherwise |
|
* mac80211 complains. This shouldn't reduce performance much |
|
* because these offloaded frames are rare. |
|
*/ |
|
offset = 4 - ((unsigned long)msdu->data & 3); |
|
skb_put(msdu, offset); |
|
memmove(msdu->data + offset, msdu->data, msdu->len); |
|
skb_pull(msdu, offset); |
|
|
|
/* FIXME: The frame is NWifi. Re-construct QoS Control |
|
* if possible later. |
|
*/ |
|
|
|
memset(status, 0, sizeof(*status)); |
|
status->flag |= RX_FLAG_NO_SIGNAL_VAL; |
|
|
|
ath10k_htt_rx_h_rx_offload_prot(status, msdu); |
|
ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); |
|
ath10k_htt_rx_h_queue_msdu(ar, status, msdu); |
|
} |
|
} |
|
|
|
static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) |
|
{ |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct htt_resp *resp = (void *)skb->data; |
|
struct ieee80211_rx_status *status = &htt->rx_status; |
|
struct sk_buff_head list; |
|
struct sk_buff_head amsdu; |
|
u16 peer_id; |
|
u16 msdu_count; |
|
u8 vdev_id; |
|
u8 tid; |
|
bool offload; |
|
bool frag; |
|
int ret; |
|
|
|
lockdep_assert_held(&htt->rx_ring.lock); |
|
|
|
if (htt->rx_confused) |
|
return -EIO; |
|
|
|
skb_pull(skb, sizeof(resp->hdr)); |
|
skb_pull(skb, sizeof(resp->rx_in_ord_ind)); |
|
|
|
peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id); |
|
msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count); |
|
vdev_id = resp->rx_in_ord_ind.vdev_id; |
|
tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID); |
|
offload = !!(resp->rx_in_ord_ind.info & |
|
HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK); |
|
frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n", |
|
vdev_id, peer_id, tid, offload, frag, msdu_count); |
|
|
|
if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) { |
|
ath10k_warn(ar, "dropping invalid in order rx indication\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* The event can deliver more than 1 A-MSDU. Each A-MSDU is later |
|
* extracted and processed. |
|
*/ |
|
__skb_queue_head_init(&list); |
|
if (ar->hw_params.target_64bit) |
|
ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind, |
|
&list); |
|
else |
|
ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind, |
|
&list); |
|
|
|
if (ret < 0) { |
|
ath10k_warn(ar, "failed to pop paddr list: %d\n", ret); |
|
htt->rx_confused = true; |
|
return -EIO; |
|
} |
|
|
|
/* Offloaded frames are very different and need to be handled |
|
* separately. |
|
*/ |
|
if (offload) |
|
ath10k_htt_rx_h_rx_offload(ar, &list); |
|
|
|
while (!skb_queue_empty(&list)) { |
|
__skb_queue_head_init(&amsdu); |
|
ret = ath10k_htt_rx_extract_amsdu(&list, &amsdu); |
|
switch (ret) { |
|
case 0: |
|
/* Note: The in-order indication may report interleaved |
|
* frames from different PPDUs meaning reported rx rate |
|
* to mac80211 isn't accurate/reliable. It's still |
|
* better to report something than nothing though. This |
|
* should still give an idea about rx rate to the user. |
|
*/ |
|
ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); |
|
ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL); |
|
ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL, |
|
NULL, peer_id, frag); |
|
ath10k_htt_rx_h_enqueue(ar, &amsdu, status); |
|
break; |
|
case -EAGAIN: |
|
fallthrough; |
|
default: |
|
/* Should not happen. */ |
|
ath10k_warn(ar, "failed to extract amsdu: %d\n", ret); |
|
htt->rx_confused = true; |
|
__skb_queue_purge(&list); |
|
return -EIO; |
|
} |
|
} |
|
return ret; |
|
} |
|
|
|
static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, |
|
const __le32 *resp_ids, |
|
int num_resp_ids) |
|
{ |
|
int i; |
|
u32 resp_id; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n", |
|
num_resp_ids); |
|
|
|
for (i = 0; i < num_resp_ids; i++) { |
|
resp_id = le32_to_cpu(resp_ids[i]); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n", |
|
resp_id); |
|
|
|
/* TODO: free resp_id */ |
|
} |
|
} |
|
|
|
static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hw *hw = ar->hw; |
|
struct ieee80211_txq *txq; |
|
struct htt_resp *resp = (struct htt_resp *)skb->data; |
|
struct htt_tx_fetch_record *record; |
|
size_t len; |
|
size_t max_num_bytes; |
|
size_t max_num_msdus; |
|
size_t num_bytes; |
|
size_t num_msdus; |
|
const __le32 *resp_ids; |
|
u16 num_records; |
|
u16 num_resp_ids; |
|
u16 peer_id; |
|
u8 tid; |
|
int ret; |
|
int i; |
|
bool may_tx; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n"); |
|
|
|
len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind); |
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n"); |
|
return; |
|
} |
|
|
|
num_records = le16_to_cpu(resp->tx_fetch_ind.num_records); |
|
num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids); |
|
|
|
len += sizeof(resp->tx_fetch_ind.records[0]) * num_records; |
|
len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids; |
|
|
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n"); |
|
return; |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n", |
|
num_records, num_resp_ids, |
|
le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num)); |
|
|
|
if (!ar->htt.tx_q_state.enabled) { |
|
ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n"); |
|
return; |
|
} |
|
|
|
if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) { |
|
ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n"); |
|
return; |
|
} |
|
|
|
rcu_read_lock(); |
|
|
|
for (i = 0; i < num_records; i++) { |
|
record = &resp->tx_fetch_ind.records[i]; |
|
peer_id = MS(le16_to_cpu(record->info), |
|
HTT_TX_FETCH_RECORD_INFO_PEER_ID); |
|
tid = MS(le16_to_cpu(record->info), |
|
HTT_TX_FETCH_RECORD_INFO_TID); |
|
max_num_msdus = le16_to_cpu(record->num_msdus); |
|
max_num_bytes = le32_to_cpu(record->num_bytes); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n", |
|
i, peer_id, tid, max_num_msdus, max_num_bytes); |
|
|
|
if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || |
|
unlikely(tid >= ar->htt.tx_q_state.num_tids)) { |
|
ath10k_warn(ar, "received out of range peer_id %u tid %u\n", |
|
peer_id, tid); |
|
continue; |
|
} |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
txq = ath10k_mac_txq_lookup(ar, peer_id, tid); |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
/* It is okay to release the lock and use txq because RCU read |
|
* lock is held. |
|
*/ |
|
|
|
if (unlikely(!txq)) { |
|
ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", |
|
peer_id, tid); |
|
continue; |
|
} |
|
|
|
num_msdus = 0; |
|
num_bytes = 0; |
|
|
|
ieee80211_txq_schedule_start(hw, txq->ac); |
|
may_tx = ieee80211_txq_may_transmit(hw, txq); |
|
while (num_msdus < max_num_msdus && |
|
num_bytes < max_num_bytes) { |
|
if (!may_tx) |
|
break; |
|
|
|
ret = ath10k_mac_tx_push_txq(hw, txq); |
|
if (ret < 0) |
|
break; |
|
|
|
num_msdus++; |
|
num_bytes += ret; |
|
} |
|
ieee80211_return_txq(hw, txq, false); |
|
ieee80211_txq_schedule_end(hw, txq->ac); |
|
|
|
record->num_msdus = cpu_to_le16(num_msdus); |
|
record->num_bytes = cpu_to_le32(num_bytes); |
|
|
|
ath10k_htt_tx_txq_recalc(hw, txq); |
|
} |
|
|
|
rcu_read_unlock(); |
|
|
|
resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind); |
|
ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids); |
|
|
|
ret = ath10k_htt_tx_fetch_resp(ar, |
|
resp->tx_fetch_ind.token, |
|
resp->tx_fetch_ind.fetch_seq_num, |
|
resp->tx_fetch_ind.records, |
|
num_records); |
|
if (unlikely(ret)) { |
|
ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n", |
|
le32_to_cpu(resp->tx_fetch_ind.token), ret); |
|
/* FIXME: request fw restart */ |
|
} |
|
|
|
ath10k_htt_tx_txq_sync(ar); |
|
} |
|
|
|
static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar, |
|
struct sk_buff *skb) |
|
{ |
|
const struct htt_resp *resp = (void *)skb->data; |
|
size_t len; |
|
int num_resp_ids; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n"); |
|
|
|
len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm); |
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n"); |
|
return; |
|
} |
|
|
|
num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids); |
|
len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids; |
|
|
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n"); |
|
return; |
|
} |
|
|
|
ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, |
|
resp->tx_fetch_confirm.resp_ids, |
|
num_resp_ids); |
|
} |
|
|
|
static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar, |
|
struct sk_buff *skb) |
|
{ |
|
const struct htt_resp *resp = (void *)skb->data; |
|
const struct htt_tx_mode_switch_record *record; |
|
struct ieee80211_txq *txq; |
|
struct ath10k_txq *artxq; |
|
size_t len; |
|
size_t num_records; |
|
enum htt_tx_mode_switch_mode mode; |
|
bool enable; |
|
u16 info0; |
|
u16 info1; |
|
u16 threshold; |
|
u16 peer_id; |
|
u8 tid; |
|
int i; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n"); |
|
|
|
len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind); |
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n"); |
|
return; |
|
} |
|
|
|
info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0); |
|
info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1); |
|
|
|
enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE); |
|
num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); |
|
mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE); |
|
threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt rx tx mode switch ind info0 0x%04hx info1 0x%04x enable %d num records %zd mode %d threshold %u\n", |
|
info0, info1, enable, num_records, mode, threshold); |
|
|
|
len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records; |
|
|
|
if (unlikely(skb->len < len)) { |
|
ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n"); |
|
return; |
|
} |
|
|
|
switch (mode) { |
|
case HTT_TX_MODE_SWITCH_PUSH: |
|
case HTT_TX_MODE_SWITCH_PUSH_PULL: |
|
break; |
|
default: |
|
ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n", |
|
mode); |
|
return; |
|
} |
|
|
|
if (!enable) |
|
return; |
|
|
|
ar->htt.tx_q_state.enabled = enable; |
|
ar->htt.tx_q_state.mode = mode; |
|
ar->htt.tx_q_state.num_push_allowed = threshold; |
|
|
|
rcu_read_lock(); |
|
|
|
for (i = 0; i < num_records; i++) { |
|
record = &resp->tx_mode_switch_ind.records[i]; |
|
info0 = le16_to_cpu(record->info0); |
|
peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID); |
|
tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID); |
|
|
|
if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) || |
|
unlikely(tid >= ar->htt.tx_q_state.num_tids)) { |
|
ath10k_warn(ar, "received out of range peer_id %u tid %u\n", |
|
peer_id, tid); |
|
continue; |
|
} |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
txq = ath10k_mac_txq_lookup(ar, peer_id, tid); |
|
spin_unlock_bh(&ar->data_lock); |
|
|
|
/* It is okay to release the lock and use txq because RCU read |
|
* lock is held. |
|
*/ |
|
|
|
if (unlikely(!txq)) { |
|
ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n", |
|
peer_id, tid); |
|
continue; |
|
} |
|
|
|
spin_lock_bh(&ar->htt.tx_lock); |
|
artxq = (void *)txq->drv_priv; |
|
artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus); |
|
spin_unlock_bh(&ar->htt.tx_lock); |
|
} |
|
|
|
rcu_read_unlock(); |
|
|
|
ath10k_mac_tx_push_pending(ar); |
|
} |
|
|
|
void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) |
|
{ |
|
bool release; |
|
|
|
release = ath10k_htt_t2h_msg_handler(ar, skb); |
|
|
|
/* Free the indication buffer */ |
|
if (release) |
|
dev_kfree_skb_any(skb); |
|
} |
|
|
|
static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate) |
|
{ |
|
static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, |
|
18, 24, 36, 48, 54}; |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { |
|
if (rate == legacy_rates[i]) |
|
return i; |
|
} |
|
|
|
ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate); |
|
return -EINVAL; |
|
} |
|
|
|
static void |
|
ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar, |
|
struct ath10k_sta *arsta, |
|
struct ath10k_per_peer_tx_stats *pstats, |
|
s8 legacy_rate_idx) |
|
{ |
|
struct rate_info *txrate = &arsta->txrate; |
|
struct ath10k_htt_tx_stats *tx_stats; |
|
int idx, ht_idx, gi, mcs, bw, nss; |
|
unsigned long flags; |
|
|
|
if (!arsta->tx_stats) |
|
return; |
|
|
|
tx_stats = arsta->tx_stats; |
|
flags = txrate->flags; |
|
gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags); |
|
mcs = ATH10K_HW_MCS_RATE(pstats->ratecode); |
|
bw = txrate->bw; |
|
nss = txrate->nss; |
|
ht_idx = mcs + (nss - 1) * 8; |
|
idx = mcs * 8 + 8 * 10 * (nss - 1); |
|
idx += bw * 2 + gi; |
|
|
|
#define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name] |
|
|
|
if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) { |
|
STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts; |
|
STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts; |
|
STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts; |
|
} else if (txrate->flags & RATE_INFO_FLAGS_MCS) { |
|
STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts; |
|
STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts; |
|
STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts; |
|
} else { |
|
mcs = legacy_rate_idx; |
|
|
|
STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts; |
|
STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts; |
|
STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts; |
|
} |
|
|
|
if (ATH10K_HW_AMPDU(pstats->flags)) { |
|
tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags); |
|
|
|
if (txrate->flags & RATE_INFO_FLAGS_MCS) { |
|
STATS_OP_FMT(AMPDU).ht[0][ht_idx] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).ht[1][ht_idx] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
} else { |
|
STATS_OP_FMT(AMPDU).vht[0][mcs] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).vht[1][mcs] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
} |
|
STATS_OP_FMT(AMPDU).bw[0][bw] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).nss[0][nss - 1] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).gi[0][gi] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).rate_table[0][idx] += |
|
pstats->succ_bytes + pstats->retry_bytes; |
|
STATS_OP_FMT(AMPDU).bw[1][bw] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
STATS_OP_FMT(AMPDU).nss[1][nss - 1] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
STATS_OP_FMT(AMPDU).gi[1][gi] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
STATS_OP_FMT(AMPDU).rate_table[1][idx] += |
|
pstats->succ_pkts + pstats->retry_pkts; |
|
} else { |
|
tx_stats->ack_fails += |
|
ATH10K_HW_BA_FAIL(pstats->flags); |
|
} |
|
|
|
STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes; |
|
|
|
STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts; |
|
STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts; |
|
STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts; |
|
|
|
STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes; |
|
|
|
STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts; |
|
STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts; |
|
STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts; |
|
|
|
STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes; |
|
|
|
STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts; |
|
STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts; |
|
STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts; |
|
|
|
if (txrate->flags >= RATE_INFO_FLAGS_MCS) { |
|
STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes; |
|
STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts; |
|
STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes; |
|
STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts; |
|
STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes; |
|
STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts; |
|
} |
|
|
|
tx_stats->tx_duration += pstats->duration; |
|
} |
|
|
|
static void |
|
ath10k_update_per_peer_tx_stats(struct ath10k *ar, |
|
struct ieee80211_sta *sta, |
|
struct ath10k_per_peer_tx_stats *peer_stats) |
|
{ |
|
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; |
|
struct ieee80211_chanctx_conf *conf = NULL; |
|
u8 rate = 0, sgi; |
|
s8 rate_idx = 0; |
|
bool skip_auto_rate; |
|
struct rate_info txrate; |
|
|
|
lockdep_assert_held(&ar->data_lock); |
|
|
|
txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); |
|
txrate.bw = ATH10K_HW_BW(peer_stats->flags); |
|
txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); |
|
txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); |
|
sgi = ATH10K_HW_GI(peer_stats->flags); |
|
skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags); |
|
|
|
/* Firmware's rate control skips broadcast/management frames, |
|
* if host has configure fixed rates and in some other special cases. |
|
*/ |
|
if (skip_auto_rate) |
|
return; |
|
|
|
if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) { |
|
ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs); |
|
return; |
|
} |
|
|
|
if (txrate.flags == WMI_RATE_PREAMBLE_HT && |
|
(txrate.mcs > 7 || txrate.nss < 1)) { |
|
ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats", |
|
txrate.mcs, txrate.nss); |
|
return; |
|
} |
|
|
|
memset(&arsta->txrate, 0, sizeof(arsta->txrate)); |
|
memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status)); |
|
if (txrate.flags == WMI_RATE_PREAMBLE_CCK || |
|
txrate.flags == WMI_RATE_PREAMBLE_OFDM) { |
|
rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); |
|
/* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ |
|
if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK) |
|
rate = 5; |
|
rate_idx = ath10k_get_legacy_rate_idx(ar, rate); |
|
if (rate_idx < 0) |
|
return; |
|
arsta->txrate.legacy = rate; |
|
} else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { |
|
arsta->txrate.flags = RATE_INFO_FLAGS_MCS; |
|
arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1); |
|
} else { |
|
arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; |
|
arsta->txrate.mcs = txrate.mcs; |
|
} |
|
|
|
switch (txrate.flags) { |
|
case WMI_RATE_PREAMBLE_OFDM: |
|
if (arsta->arvif && arsta->arvif->vif) |
|
conf = rcu_dereference(arsta->arvif->vif->chanctx_conf); |
|
if (conf && conf->def.chan->band == NL80211_BAND_5GHZ) |
|
arsta->tx_info.status.rates[0].idx = rate_idx - 4; |
|
break; |
|
case WMI_RATE_PREAMBLE_CCK: |
|
arsta->tx_info.status.rates[0].idx = rate_idx; |
|
if (sgi) |
|
arsta->tx_info.status.rates[0].flags |= |
|
(IEEE80211_TX_RC_USE_SHORT_PREAMBLE | |
|
IEEE80211_TX_RC_SHORT_GI); |
|
break; |
|
case WMI_RATE_PREAMBLE_HT: |
|
arsta->tx_info.status.rates[0].idx = |
|
txrate.mcs + ((txrate.nss - 1) * 8); |
|
if (sgi) |
|
arsta->tx_info.status.rates[0].flags |= |
|
IEEE80211_TX_RC_SHORT_GI; |
|
arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS; |
|
break; |
|
case WMI_RATE_PREAMBLE_VHT: |
|
ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0], |
|
txrate.mcs, txrate.nss); |
|
if (sgi) |
|
arsta->tx_info.status.rates[0].flags |= |
|
IEEE80211_TX_RC_SHORT_GI; |
|
arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS; |
|
break; |
|
} |
|
|
|
arsta->txrate.nss = txrate.nss; |
|
arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw); |
|
arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate); |
|
if (sgi) |
|
arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
|
|
switch (arsta->txrate.bw) { |
|
case RATE_INFO_BW_40: |
|
arsta->tx_info.status.rates[0].flags |= |
|
IEEE80211_TX_RC_40_MHZ_WIDTH; |
|
break; |
|
case RATE_INFO_BW_80: |
|
arsta->tx_info.status.rates[0].flags |= |
|
IEEE80211_TX_RC_80_MHZ_WIDTH; |
|
break; |
|
} |
|
|
|
if (peer_stats->succ_pkts) { |
|
arsta->tx_info.flags = IEEE80211_TX_STAT_ACK; |
|
arsta->tx_info.status.rates[0].count = 1; |
|
ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info); |
|
} |
|
|
|
if (ar->htt.disable_tx_comp) { |
|
arsta->tx_failed += peer_stats->failed_pkts; |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n", |
|
arsta->tx_failed); |
|
} |
|
|
|
arsta->tx_retries += peer_stats->retry_pkts; |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries); |
|
|
|
if (ath10k_debug_is_extd_tx_stats_enabled(ar)) |
|
ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats, |
|
rate_idx); |
|
} |
|
|
|
static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, |
|
struct sk_buff *skb) |
|
{ |
|
struct htt_resp *resp = (struct htt_resp *)skb->data; |
|
struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; |
|
struct htt_per_peer_tx_stats_ind *tx_stats; |
|
struct ieee80211_sta *sta; |
|
struct ath10k_peer *peer; |
|
int peer_id, i; |
|
u8 ppdu_len, num_ppdu; |
|
|
|
num_ppdu = resp->peer_tx_stats.num_ppdu; |
|
ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); |
|
|
|
if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { |
|
ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); |
|
return; |
|
} |
|
|
|
tx_stats = (struct htt_per_peer_tx_stats_ind *) |
|
(resp->peer_tx_stats.payload); |
|
peer_id = __le16_to_cpu(tx_stats->peer_id); |
|
|
|
rcu_read_lock(); |
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer || !peer->sta) { |
|
ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n", |
|
peer_id); |
|
goto out; |
|
} |
|
|
|
sta = peer->sta; |
|
for (i = 0; i < num_ppdu; i++) { |
|
tx_stats = (struct htt_per_peer_tx_stats_ind *) |
|
(resp->peer_tx_stats.payload + i * ppdu_len); |
|
|
|
p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); |
|
p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); |
|
p_tx_stats->failed_bytes = |
|
__le32_to_cpu(tx_stats->failed_bytes); |
|
p_tx_stats->ratecode = tx_stats->ratecode; |
|
p_tx_stats->flags = tx_stats->flags; |
|
p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); |
|
p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); |
|
p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); |
|
p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration); |
|
|
|
ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); |
|
} |
|
|
|
out: |
|
spin_unlock_bh(&ar->data_lock); |
|
rcu_read_unlock(); |
|
} |
|
|
|
static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data) |
|
{ |
|
struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data; |
|
struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; |
|
struct ath10k_10_2_peer_tx_stats *tx_stats; |
|
struct ieee80211_sta *sta; |
|
struct ath10k_peer *peer; |
|
u16 log_type = __le16_to_cpu(hdr->log_type); |
|
u32 peer_id = 0, i; |
|
|
|
if (log_type != ATH_PKTLOG_TYPE_TX_STAT) |
|
return; |
|
|
|
tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) + |
|
ATH10K_10_2_TX_STATS_OFFSET); |
|
|
|
if (!tx_stats->tx_ppdu_cnt) |
|
return; |
|
|
|
peer_id = tx_stats->peer_id; |
|
|
|
rcu_read_lock(); |
|
spin_lock_bh(&ar->data_lock); |
|
peer = ath10k_peer_find_by_id(ar, peer_id); |
|
if (!peer || !peer->sta) { |
|
ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n", |
|
peer_id); |
|
goto out; |
|
} |
|
|
|
sta = peer->sta; |
|
for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) { |
|
p_tx_stats->succ_bytes = |
|
__le16_to_cpu(tx_stats->success_bytes[i]); |
|
p_tx_stats->retry_bytes = |
|
__le16_to_cpu(tx_stats->retry_bytes[i]); |
|
p_tx_stats->failed_bytes = |
|
__le16_to_cpu(tx_stats->failed_bytes[i]); |
|
p_tx_stats->ratecode = tx_stats->ratecode[i]; |
|
p_tx_stats->flags = tx_stats->flags[i]; |
|
p_tx_stats->succ_pkts = tx_stats->success_pkts[i]; |
|
p_tx_stats->retry_pkts = tx_stats->retry_pkts[i]; |
|
p_tx_stats->failed_pkts = tx_stats->failed_pkts[i]; |
|
|
|
ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); |
|
} |
|
spin_unlock_bh(&ar->data_lock); |
|
rcu_read_unlock(); |
|
|
|
return; |
|
|
|
out: |
|
spin_unlock_bh(&ar->data_lock); |
|
rcu_read_unlock(); |
|
} |
|
|
|
static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type) |
|
{ |
|
switch (sec_type) { |
|
case HTT_SECURITY_TKIP: |
|
case HTT_SECURITY_TKIP_NOMIC: |
|
case HTT_SECURITY_AES_CCMP: |
|
return 48; |
|
default: |
|
return 0; |
|
} |
|
} |
|
|
|
static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar, |
|
struct htt_security_indication *ev) |
|
{ |
|
enum htt_txrx_sec_cast_type sec_index; |
|
enum htt_security_types sec_type; |
|
struct ath10k_peer *peer; |
|
|
|
spin_lock_bh(&ar->data_lock); |
|
|
|
peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id)); |
|
if (!peer) { |
|
ath10k_warn(ar, "failed to find peer id %d for security indication", |
|
__le16_to_cpu(ev->peer_id)); |
|
goto out; |
|
} |
|
|
|
sec_type = MS(ev->flags, HTT_SECURITY_TYPE); |
|
|
|
if (ev->flags & HTT_SECURITY_IS_UNICAST) |
|
sec_index = HTT_TXRX_SEC_UCAST; |
|
else |
|
sec_index = HTT_TXRX_SEC_MCAST; |
|
|
|
peer->rx_pn[sec_index].sec_type = sec_type; |
|
peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type); |
|
|
|
memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid)); |
|
memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn)); |
|
|
|
out: |
|
spin_unlock_bh(&ar->data_lock); |
|
} |
|
|
|
bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) |
|
{ |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct htt_resp *resp = (struct htt_resp *)skb->data; |
|
enum htt_t2h_msg_type type; |
|
|
|
/* confirm alignment */ |
|
if (!IS_ALIGNED((unsigned long)skb->data, 4)) |
|
ath10k_warn(ar, "unaligned htt message, expect trouble\n"); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n", |
|
resp->hdr.msg_type); |
|
|
|
if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) { |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X", |
|
resp->hdr.msg_type, ar->htt.t2h_msg_types_max); |
|
return true; |
|
} |
|
type = ar->htt.t2h_msg_types[resp->hdr.msg_type]; |
|
|
|
switch (type) { |
|
case HTT_T2H_MSG_TYPE_VERSION_CONF: { |
|
htt->target_version_major = resp->ver_resp.major; |
|
htt->target_version_minor = resp->ver_resp.minor; |
|
complete(&htt->target_version_received); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_RX_IND: |
|
if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) { |
|
ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind); |
|
} else { |
|
skb_queue_tail(&htt->rx_indication_head, skb); |
|
return false; |
|
} |
|
break; |
|
case HTT_T2H_MSG_TYPE_PEER_MAP: { |
|
struct htt_peer_map_event ev = { |
|
.vdev_id = resp->peer_map.vdev_id, |
|
.peer_id = __le16_to_cpu(resp->peer_map.peer_id), |
|
}; |
|
memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr)); |
|
ath10k_peer_map_event(htt, &ev); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_PEER_UNMAP: { |
|
struct htt_peer_unmap_event ev = { |
|
.peer_id = __le16_to_cpu(resp->peer_unmap.peer_id), |
|
}; |
|
ath10k_peer_unmap_event(htt, &ev); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: { |
|
struct htt_tx_done tx_done = {}; |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct ath10k_htc *htc = &ar->htc; |
|
struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; |
|
int status = __le32_to_cpu(resp->mgmt_tx_completion.status); |
|
int info = __le32_to_cpu(resp->mgmt_tx_completion.info); |
|
|
|
tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); |
|
|
|
switch (status) { |
|
case HTT_MGMT_TX_STATUS_OK: |
|
tx_done.status = HTT_TX_COMPL_STATE_ACK; |
|
if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, |
|
ar->wmi.svc_map) && |
|
(resp->mgmt_tx_completion.flags & |
|
HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) { |
|
tx_done.ack_rssi = |
|
FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK, |
|
info); |
|
} |
|
break; |
|
case HTT_MGMT_TX_STATUS_RETRY: |
|
tx_done.status = HTT_TX_COMPL_STATE_NOACK; |
|
break; |
|
case HTT_MGMT_TX_STATUS_DROP: |
|
tx_done.status = HTT_TX_COMPL_STATE_DISCARD; |
|
break; |
|
} |
|
|
|
if (htt->disable_tx_comp) { |
|
spin_lock_bh(&htc->tx_lock); |
|
ep->tx_credits++; |
|
spin_unlock_bh(&htc->tx_lock); |
|
} |
|
|
|
status = ath10k_txrx_tx_unref(htt, &tx_done); |
|
if (!status) { |
|
spin_lock_bh(&htt->tx_lock); |
|
ath10k_htt_tx_mgmt_dec_pending(htt); |
|
spin_unlock_bh(&htt->tx_lock); |
|
} |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_TX_COMPL_IND: |
|
ath10k_htt_rx_tx_compl_ind(htt->ar, skb); |
|
break; |
|
case HTT_T2H_MSG_TYPE_SEC_IND: { |
|
struct ath10k *ar = htt->ar; |
|
struct htt_security_indication *ev = &resp->security_indication; |
|
|
|
ath10k_htt_rx_sec_ind_handler(ar, ev); |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"sec ind peer_id %d unicast %d type %d\n", |
|
__le16_to_cpu(ev->peer_id), |
|
!!(ev->flags & HTT_SECURITY_IS_UNICAST), |
|
MS(ev->flags, HTT_SECURITY_TYPE)); |
|
complete(&ar->install_key_done); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_RX_FRAG_IND: { |
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", |
|
skb->data, skb->len); |
|
atomic_inc(&htt->num_mpdus_ready); |
|
|
|
return ath10k_htt_rx_proc_rx_frag_ind(htt, |
|
&resp->rx_frag_ind, |
|
skb); |
|
} |
|
case HTT_T2H_MSG_TYPE_TEST: |
|
break; |
|
case HTT_T2H_MSG_TYPE_STATS_CONF: |
|
trace_ath10k_htt_stats(ar, skb->data, skb->len); |
|
break; |
|
case HTT_T2H_MSG_TYPE_TX_INSPECT_IND: |
|
/* Firmware can return tx frames if it's unable to fully |
|
* process them and suspects host may be able to fix it. ath10k |
|
* sends all tx frames as already inspected so this shouldn't |
|
* happen unless fw has a bug. |
|
*/ |
|
ath10k_warn(ar, "received an unexpected htt tx inspect event\n"); |
|
break; |
|
case HTT_T2H_MSG_TYPE_RX_ADDBA: |
|
ath10k_htt_rx_addba(ar, resp); |
|
break; |
|
case HTT_T2H_MSG_TYPE_RX_DELBA: |
|
ath10k_htt_rx_delba(ar, resp); |
|
break; |
|
case HTT_T2H_MSG_TYPE_PKTLOG: { |
|
trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload, |
|
skb->len - |
|
offsetof(struct htt_resp, |
|
pktlog_msg.payload)); |
|
|
|
if (ath10k_peer_stats_enabled(ar)) |
|
ath10k_fetch_10_2_tx_stats(ar, |
|
resp->pktlog_msg.payload); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_RX_FLUSH: { |
|
/* Ignore this event because mac80211 takes care of Rx |
|
* aggregation reordering. |
|
*/ |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: { |
|
skb_queue_tail(&htt->rx_in_ord_compl_q, skb); |
|
return false; |
|
} |
|
case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: { |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct ath10k_htc *htc = &ar->htc; |
|
struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid]; |
|
u32 msg_word = __le32_to_cpu(*(__le32 *)resp); |
|
int htt_credit_delta; |
|
|
|
htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word); |
|
if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word)) |
|
htt_credit_delta = -htt_credit_delta; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt credit update delta %d\n", |
|
htt_credit_delta); |
|
|
|
if (htt->disable_tx_comp) { |
|
spin_lock_bh(&htc->tx_lock); |
|
ep->tx_credits += htt_credit_delta; |
|
spin_unlock_bh(&htc->tx_lock); |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt credit total %d\n", |
|
ep->tx_credits); |
|
ep->ep_ops.ep_tx_credits(htc->ar); |
|
} |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_CHAN_CHANGE: { |
|
u32 phymode = __le32_to_cpu(resp->chan_change.phymode); |
|
u32 freq = __le32_to_cpu(resp->chan_change.freq); |
|
|
|
ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq); |
|
ath10k_dbg(ar, ATH10K_DBG_HTT, |
|
"htt chan change freq %u phymode %s\n", |
|
freq, ath10k_wmi_phymode_str(phymode)); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_AGGR_CONF: |
|
break; |
|
case HTT_T2H_MSG_TYPE_TX_FETCH_IND: { |
|
struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC); |
|
|
|
if (!tx_fetch_ind) { |
|
ath10k_warn(ar, "failed to copy htt tx fetch ind\n"); |
|
break; |
|
} |
|
skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind); |
|
break; |
|
} |
|
case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM: |
|
ath10k_htt_rx_tx_fetch_confirm(ar, skb); |
|
break; |
|
case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: |
|
ath10k_htt_rx_tx_mode_switch_ind(ar, skb); |
|
break; |
|
case HTT_T2H_MSG_TYPE_PEER_STATS: |
|
ath10k_htt_fetch_peer_stats(ar, skb); |
|
break; |
|
case HTT_T2H_MSG_TYPE_EN_STATS: |
|
default: |
|
ath10k_warn(ar, "htt event (%d) not handled\n", |
|
resp->hdr.msg_type); |
|
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ", |
|
skb->data, skb->len); |
|
break; |
|
} |
|
return true; |
|
} |
|
EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler); |
|
|
|
void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, |
|
struct sk_buff *skb) |
|
{ |
|
trace_ath10k_htt_pktlog(ar, skb->data, skb->len); |
|
dev_kfree_skb_any(skb); |
|
} |
|
EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler); |
|
|
|
static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget) |
|
{ |
|
struct sk_buff *skb; |
|
|
|
while (quota < budget) { |
|
if (skb_queue_empty(&ar->htt.rx_msdus_q)) |
|
break; |
|
|
|
skb = skb_dequeue(&ar->htt.rx_msdus_q); |
|
if (!skb) |
|
break; |
|
ath10k_process_rx(ar, skb); |
|
quota++; |
|
} |
|
|
|
return quota; |
|
} |
|
|
|
int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget) |
|
{ |
|
struct htt_resp *resp; |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct sk_buff *skb; |
|
bool release; |
|
int quota; |
|
|
|
for (quota = 0; quota < budget; quota++) { |
|
skb = skb_dequeue(&htt->rx_indication_head); |
|
if (!skb) |
|
break; |
|
|
|
resp = (struct htt_resp *)skb->data; |
|
|
|
release = ath10k_htt_rx_proc_rx_ind_hl(htt, |
|
&resp->rx_ind_hl, |
|
skb, |
|
HTT_RX_PN_CHECK, |
|
HTT_RX_NON_TKIP_MIC); |
|
|
|
if (release) |
|
dev_kfree_skb_any(skb); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n", |
|
skb_queue_len(&htt->rx_indication_head)); |
|
} |
|
return quota; |
|
} |
|
EXPORT_SYMBOL(ath10k_htt_rx_hl_indication); |
|
|
|
int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) |
|
{ |
|
struct ath10k_htt *htt = &ar->htt; |
|
struct htt_tx_done tx_done = {}; |
|
struct sk_buff_head tx_ind_q; |
|
struct sk_buff *skb; |
|
unsigned long flags; |
|
int quota = 0, done, ret; |
|
bool resched_napi = false; |
|
|
|
__skb_queue_head_init(&tx_ind_q); |
|
|
|
/* Process pending frames before dequeuing more data |
|
* from hardware. |
|
*/ |
|
quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); |
|
if (quota == budget) { |
|
resched_napi = true; |
|
goto exit; |
|
} |
|
|
|
while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) { |
|
spin_lock_bh(&htt->rx_ring.lock); |
|
ret = ath10k_htt_rx_in_ord_ind(ar, skb); |
|
spin_unlock_bh(&htt->rx_ring.lock); |
|
|
|
dev_kfree_skb_any(skb); |
|
if (ret == -EIO) { |
|
resched_napi = true; |
|
goto exit; |
|
} |
|
} |
|
|
|
while (atomic_read(&htt->num_mpdus_ready)) { |
|
ret = ath10k_htt_rx_handle_amsdu(htt); |
|
if (ret == -EIO) { |
|
resched_napi = true; |
|
goto exit; |
|
} |
|
atomic_dec(&htt->num_mpdus_ready); |
|
} |
|
|
|
/* Deliver received data after processing data from hardware */ |
|
quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget); |
|
|
|
/* From NAPI documentation: |
|
* The napi poll() function may also process TX completions, in which |
|
* case if it processes the entire TX ring then it should count that |
|
* work as the rest of the budget. |
|
*/ |
|
if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo)) |
|
quota = budget; |
|
|
|
/* kfifo_get: called only within txrx_tasklet so it's neatly serialized. |
|
* From kfifo_get() documentation: |
|
* Note that with only one concurrent reader and one concurrent writer, |
|
* you don't need extra locking to use these macro. |
|
*/ |
|
while (kfifo_get(&htt->txdone_fifo, &tx_done)) |
|
ath10k_txrx_tx_unref(htt, &tx_done); |
|
|
|
ath10k_mac_tx_push_pending(ar); |
|
|
|
spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags); |
|
skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q); |
|
spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags); |
|
|
|
while ((skb = __skb_dequeue(&tx_ind_q))) { |
|
ath10k_htt_rx_tx_fetch_ind(ar, skb); |
|
dev_kfree_skb_any(skb); |
|
} |
|
|
|
exit: |
|
ath10k_htt_rx_msdu_buff_replenish(htt); |
|
/* In case of rx failure or more data to read, report budget |
|
* to reschedule NAPI poll |
|
*/ |
|
done = resched_napi ? budget : quota; |
|
|
|
return done; |
|
} |
|
EXPORT_SYMBOL(ath10k_htt_txrx_compl_task); |
|
|
|
static const struct ath10k_htt_rx_ops htt_rx_ops_32 = { |
|
.htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32, |
|
.htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32, |
|
.htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32, |
|
.htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32, |
|
.htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32, |
|
}; |
|
|
|
static const struct ath10k_htt_rx_ops htt_rx_ops_64 = { |
|
.htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64, |
|
.htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64, |
|
.htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64, |
|
.htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64, |
|
.htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64, |
|
}; |
|
|
|
static const struct ath10k_htt_rx_ops htt_rx_ops_hl = { |
|
.htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl, |
|
}; |
|
|
|
void ath10k_htt_set_rx_ops(struct ath10k_htt *htt) |
|
{ |
|
struct ath10k *ar = htt->ar; |
|
|
|
if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) |
|
htt->rx_ops = &htt_rx_ops_hl; |
|
else if (ar->hw_params.target_64bit) |
|
htt->rx_ops = &htt_rx_ops_64; |
|
else |
|
htt->rx_ops = &htt_rx_ops_32; |
|
}
|
|
|