From 025d5734caba6fa1fd96b57c19c61e42e601815b Mon Sep 17 00:00:00 2001 From: Peter Chiu Date: Fri, 26 Jan 2024 17:09:12 +0800 Subject: [PATCH] wifi: mt76: mt7996: check txs format before getting skb by pid The PPDU TXS does not include the error bit so it cannot use to report status to mac80211. This patch fixes issue that STA wrongly detects if AP is still alive. Fixes: 2569ea5326e2 ("wifi: mt76: mt7996: enable PPDU-TxS to host") Signed-off-by: Peter Chiu Signed-off-by: Shayne Chen Signed-off-by: Felix Fietkau --- mt7996/mac.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) --- a/mt7996/mac.c +++ b/mt7996/mac.c @@ -1188,25 +1188,28 @@ mt7996_mac_add_txs_skb(struct mt7996_dev struct ieee80211_tx_info *info; struct sk_buff_head list; struct rate_info rate = {}; - struct sk_buff *skb; + struct sk_buff *skb = NULL; bool cck = false; u32 txrate, txs, mode, stbc; txs = le32_to_cpu(txs_data[0]); mt76_tx_status_lock(mdev, &list); - skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); - if (skb) { - info = IEEE80211_SKB_CB(skb); - if (!(txs & MT_TXS0_ACK_ERROR_MASK)) - info->flags |= IEEE80211_TX_STAT_ACK; - - info->status.ampdu_len = 1; - info->status.ampdu_ack_len = - !!(info->flags & IEEE80211_TX_STAT_ACK); + /* only report MPDU TXS */ + if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) == 0) { + skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); + if (skb) { + info = IEEE80211_SKB_CB(skb); + if (!(txs & MT_TXS0_ACK_ERROR_MASK)) + info->flags |= IEEE80211_TX_STAT_ACK; + + info->status.ampdu_len = 1; + info->status.ampdu_ack_len = + !!(info->flags & IEEE80211_TX_STAT_ACK); - info->status.rates[0].idx = -1; + info->status.rates[0].idx = -1; + } } if (mtk_wed_device_active(&dev->mt76.mmio.wed) && wcid->sta) {