diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index dd3c6c63aae1..6a126116730d 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -67,7 +67,6 @@ /* NAPI poll budget */ #define ATH10K_NAPI_BUDGET 64 -#define ATH10K_NAPI_QUOTA_LIMIT 60 /* SMBIOS type containing Board Data File Name Extension */ #define ATH10K_SMBIOS_BDF_EXT_TYPE 0xF8 diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 6305308422c4..7d6143523634 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -1695,7 +1695,7 @@ struct ath10k_htt { /* This is used to group tx/rx completions separately and process them * in batches to reduce cache stalls */ - struct sk_buff_head rx_compl_q; + struct sk_buff_head rx_msdus_q; struct sk_buff_head rx_in_ord_compl_q; struct sk_buff_head tx_fetch_ind_q; diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 7d295ee71534..07f7960ab70c 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -227,7 +227,7 @@ void ath10k_htt_rx_free(struct ath10k_htt *htt) { del_timer_sync(&htt->rx_ring.refill_retry_timer); - skb_queue_purge(&htt->rx_compl_q); + skb_queue_purge(&htt->rx_msdus_q); skb_queue_purge(&htt->rx_in_ord_compl_q); skb_queue_purge(&htt->tx_fetch_ind_q); @@ -515,7 +515,7 @@ int ath10k_htt_rx_alloc(struct ath10k_htt *htt) htt->rx_ring.sw_rd_idx.msdu_payld = 0; hash_init(htt->rx_ring.skb_table); - skb_queue_head_init(&htt->rx_compl_q); + 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); @@ -974,16 +974,25 @@ static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size) return out; } -static void ath10k_process_rx(struct ath10k *ar, - struct ieee80211_rx_status *rx_status, - struct sk_buff *skb) +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); - *status = *rx_status; 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", @@ -1517,7 +1526,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, } } -static void ath10k_htt_rx_h_deliver(struct ath10k *ar, +static void ath10k_htt_rx_h_enqueue(struct ath10k *ar, struct sk_buff_head *amsdu, struct ieee80211_rx_status *status) { @@ -1540,7 +1549,7 @@ static void ath10k_htt_rx_h_deliver(struct ath10k *ar, status->flag |= RX_FLAG_ALLOW_SAME_PN; } - ath10k_process_rx(ar, status, msdu); + ath10k_htt_rx_h_queue_msdu(ar, status, msdu); } } @@ -1652,7 +1661,7 @@ 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, num_msdus; + int ret; __skb_queue_head_init(&amsdu); @@ -1674,7 +1683,6 @@ static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) 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 */ @@ -1683,9 +1691,9 @@ static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) ath10k_htt_rx_h_filter(ar, &amsdu, rx_status); ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true); - ath10k_htt_rx_h_deliver(ar, &amsdu, rx_status); + ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); - return num_msdus; + return 0; } static void ath10k_htt_rx_proc_rx_ind(struct ath10k_htt *htt, @@ -1893,15 +1901,14 @@ static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status, RX_FLAG_MMIC_STRIPPED; } -static int ath10k_htt_rx_h_rx_offload(struct ath10k *ar, - struct sk_buff_head *list) +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; - int num_msdu = 0; while ((msdu = __skb_dequeue(list))) { /* Offloaded frames don't have Rx descriptor. Instead they have @@ -1940,10 +1947,8 @@ static int ath10k_htt_rx_h_rx_offload(struct ath10k *ar, ath10k_htt_rx_h_rx_offload_prot(status, msdu); ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); - ath10k_process_rx(ar, status, msdu); - num_msdu++; + ath10k_htt_rx_h_queue_msdu(ar, status, msdu); } - return num_msdu; } static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) @@ -1959,7 +1964,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) u8 tid; bool offload; bool frag; - int ret, num_msdus = 0; + int ret; lockdep_assert_held(&htt->rx_ring.lock); @@ -2001,7 +2006,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) * separately. */ if (offload) - num_msdus = ath10k_htt_rx_h_rx_offload(ar, &list); + ath10k_htt_rx_h_rx_offload(ar, &list); while (!skb_queue_empty(&list)) { __skb_queue_head_init(&amsdu); @@ -2014,11 +2019,10 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) * better to report something than nothing though. This * should still give an idea about rx rate to the user. */ - num_msdus += skb_queue_len(&amsdu); ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); ath10k_htt_rx_h_filter(ar, &amsdu, status); ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false); - ath10k_htt_rx_h_deliver(ar, &amsdu, status); + ath10k_htt_rx_h_enqueue(ar, &amsdu, status); break; case -EAGAIN: /* fall through */ @@ -2030,7 +2034,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) return -EIO; } } - return num_msdus; + return ret; } static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, @@ -2631,6 +2635,24 @@ void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, } 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_txrx_compl_task(struct ath10k *ar, int budget) { struct ath10k_htt *htt = &ar->htt; @@ -2638,63 +2660,44 @@ int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget) struct sk_buff_head tx_ind_q; struct sk_buff *skb; unsigned long flags; - int quota = 0, done, num_rx_msdus; + int quota = 0, done, ret; bool resched_napi = false; __skb_queue_head_init(&tx_ind_q); - /* Since in-ord-ind can deliver more than 1 A-MSDU in single event, - * process it first to utilize full available quota. + /* Process pending frames before dequeuing more data + * from hardware. */ - while (quota < budget) { - if (skb_queue_empty(&htt->rx_in_ord_compl_q)) - break; - - skb = __skb_dequeue(&htt->rx_in_ord_compl_q); - if (!skb) { - resched_napi = true; - goto exit; - } + 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); - num_rx_msdus = ath10k_htt_rx_in_ord_ind(ar, skb); + ret = ath10k_htt_rx_in_ord_ind(ar, skb); spin_unlock_bh(&htt->rx_ring.lock); - if (num_rx_msdus < 0) { - resched_napi = true; - goto exit; - } dev_kfree_skb_any(skb); - if (num_rx_msdus > 0) - quota += num_rx_msdus; - - if ((quota > ATH10K_NAPI_QUOTA_LIMIT) && - !skb_queue_empty(&htt->rx_in_ord_compl_q)) { + if (ret == -EIO) { resched_napi = true; goto exit; } } - while (quota < budget) { - /* no more data to receive */ - if (!atomic_read(&htt->num_mpdus_ready)) - break; - - num_rx_msdus = ath10k_htt_rx_handle_amsdu(htt); - if (num_rx_msdus < 0) { + while (atomic_read(&htt->num_mpdus_ready)) { + ret = ath10k_htt_rx_handle_amsdu(htt); + if (ret == -EIO) { resched_napi = true; goto exit; } - - quota += num_rx_msdus; atomic_dec(&htt->num_mpdus_ready); - if ((quota > ATH10K_NAPI_QUOTA_LIMIT) && - atomic_read(&htt->num_mpdus_ready)) { - resched_napi = true; - goto exit; - } } + /* 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