From 2587d5198aa5adcbd8896aae4a2404dc13d48637 Mon Sep 17 00:00:00 2001 From: Sergey Ryazanov Date: Wed, 18 May 2022 10:27:26 +0300 Subject: ath10k: improve tx status reporting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We use ieee80211_tx_status() to report each completed tx frame. Internally, this function calls sta_info_get_by_addrs(), what has a couple of drawbacks: 1. additional station lookup causes a performance degradation; 2. mac80211 can not properly account Ethernet encapsulated frames due to the inability to properly determine the destination (station) MAC address since ieee80211_tx_status() assumes the frame has a 802.11 header. The latter is especially destructive if we want to use hardware frames encapsulation. To fix both of these issues, replace ieee80211_tx_status() with ieee80211_tx_status_ext() call and feed it station pointer from the tx queue associated with the transmitted frame. Tested-on: QCA9888 hw2.0 PCI 10.4-3.9.0.2-00131 Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00157-QCARMSWPZ-1 Signed-off-by: Sergey Ryazanov Tested-by: Oldřich Jedlička # TP-Link Archer C7 v4 & v5 (QCA9563 + QCA9880) Tested-by: Edward Matijevic # TP-Link Archer C2600 (IPQ8064 + QCA9980 10.4.1.00030-1) Tested-by: Edward Matijevic # QCA9377 PCI in Sta mode Tested-by: Zhijun You # NETGEAR R7800 (QCA9984 10.4-3.9.0.2-00159) Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220516032519.29831-2-ryazanov.s.a@gmail.com --- drivers/net/wireless/ath/ath10k/txrx.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -43,6 +43,7 @@ out: int ath10k_txrx_tx_unref(struct ath10k_htt *htt, const struct htt_tx_done *tx_done) { + struct ieee80211_tx_status status; struct ath10k *ar = htt->ar; struct device *dev = ar->dev; struct ieee80211_tx_info *info; @@ -128,7 +129,19 @@ int ath10k_txrx_tx_unref(struct ath10k_h info->status.is_valid_ack_signal = true; } - ieee80211_tx_status(htt->ar->hw, msdu); + memset(&status, 0, sizeof(status)); + status.skb = msdu; + status.info = info; + + rcu_read_lock(); + + if (txq) + status.sta = txq->sta; + + ieee80211_tx_status_ext(htt->ar->hw, &status); + + rcu_read_unlock(); + /* we do not own the msdu anymore */ return 0;