diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htt_rx.c')
-rw-r--r-- | drivers/net/wireless/ath/ath10k/htt_rx.c | 58 |
1 files changed, 33 insertions, 25 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 06975bf49351..ea73a233ecd7 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -226,7 +226,6 @@ void ath10k_htt_rx_free(struct ath10k_htt *htt) tasklet_kill(&htt->rx_replenish_task); tasklet_kill(&htt->txrx_compl_task); - skb_queue_purge(&htt->tx_compl_q); skb_queue_purge(&htt->rx_compl_q); skb_queue_purge(&htt->rx_in_ord_compl_q); skb_queue_purge(&htt->tx_fetch_ind_q); @@ -567,7 +566,6 @@ int ath10k_htt_rx_alloc(struct ath10k_htt *htt) tasklet_init(&htt->rx_replenish_task, ath10k_htt_rx_replenish_task, (unsigned long)htt); - skb_queue_head_init(&htt->tx_compl_q); skb_queue_head_init(&htt->rx_compl_q); skb_queue_head_init(&htt->rx_in_ord_compl_q); skb_queue_head_init(&htt->tx_fetch_ind_q); @@ -1678,7 +1676,7 @@ static void ath10k_htt_rx_frag_handler(struct ath10k_htt *htt, } } -static void ath10k_htt_rx_frm_tx_compl(struct ath10k *ar, +static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar, struct sk_buff *skb) { struct ath10k_htt *htt = &ar->htt; @@ -1690,19 +1688,19 @@ static void ath10k_htt_rx_frm_tx_compl(struct ath10k *ar, switch (status) { case HTT_DATA_TX_STATUS_NO_ACK: - tx_done.no_ack = true; + tx_done.status = HTT_TX_COMPL_STATE_NOACK; break; case HTT_DATA_TX_STATUS_OK: - tx_done.success = true; + 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.discard = true; + tx_done.status = HTT_TX_COMPL_STATE_DISCARD; break; default: ath10k_warn(ar, "unhandled tx completion status %d\n", status); - tx_done.discard = true; + tx_done.status = HTT_TX_COMPL_STATE_DISCARD; break; } @@ -1712,7 +1710,20 @@ static void ath10k_htt_rx_frm_tx_compl(struct ath10k *ar, for (i = 0; i < resp->data_tx_completion.num_msdus; i++) { msdu_id = resp->data_tx_completion.msdus[i]; tx_done.msdu_id = __le16_to_cpu(msdu_id); - ath10k_txrx_tx_unref(htt, &tx_done); + + /* 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 (!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); + } } } @@ -2339,18 +2350,17 @@ void ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) struct htt_tx_done tx_done = {}; int status = __le32_to_cpu(resp->mgmt_tx_completion.status); - tx_done.msdu_id = - __le32_to_cpu(resp->mgmt_tx_completion.desc_id); + tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id); switch (status) { case HTT_MGMT_TX_STATUS_OK: - tx_done.success = true; + tx_done.status = HTT_TX_COMPL_STATE_ACK; break; case HTT_MGMT_TX_STATUS_RETRY: - tx_done.no_ack = true; + tx_done.status = HTT_TX_COMPL_STATE_NOACK; break; case HTT_MGMT_TX_STATUS_DROP: - tx_done.discard = true; + tx_done.status = HTT_TX_COMPL_STATE_DISCARD; break; } @@ -2364,9 +2374,9 @@ void ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) break; } case HTT_T2H_MSG_TYPE_TX_COMPL_IND: - skb_queue_tail(&htt->tx_compl_q, skb); + ath10k_htt_rx_tx_compl_ind(htt->ar, skb); tasklet_schedule(&htt->txrx_compl_task); - return; + break; case HTT_T2H_MSG_TYPE_SEC_IND: { struct ath10k *ar = htt->ar; struct htt_security_indication *ev = &resp->security_indication; @@ -2475,7 +2485,7 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) { struct ath10k_htt *htt = (struct ath10k_htt *)ptr; struct ath10k *ar = htt->ar; - struct sk_buff_head tx_q; + struct htt_tx_done tx_done = {}; struct sk_buff_head rx_q; struct sk_buff_head rx_ind_q; struct sk_buff_head tx_ind_q; @@ -2483,15 +2493,10 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) struct sk_buff *skb; unsigned long flags; - __skb_queue_head_init(&tx_q); __skb_queue_head_init(&rx_q); __skb_queue_head_init(&rx_ind_q); __skb_queue_head_init(&tx_ind_q); - spin_lock_irqsave(&htt->tx_compl_q.lock, flags); - skb_queue_splice_init(&htt->tx_compl_q, &tx_q); - spin_unlock_irqrestore(&htt->tx_compl_q.lock, flags); - spin_lock_irqsave(&htt->rx_compl_q.lock, flags); skb_queue_splice_init(&htt->rx_compl_q, &rx_q); spin_unlock_irqrestore(&htt->rx_compl_q.lock, flags); @@ -2504,10 +2509,13 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) 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_q))) { - ath10k_htt_rx_frm_tx_compl(htt->ar, skb); - dev_kfree_skb_any(skb); - } + /* 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); while ((skb = __skb_dequeue(&tx_ind_q))) { ath10k_htt_rx_tx_fetch_ind(ar, skb); |