This is a note to let you know that I've just added the patch titled
wifi: mt76: mt7996: check txs format before getting skb by pid
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mt76-mt7996-check-txs-format-before-getting-skb.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 56aefd924ce4ae804c9eed71664cd4b512466532
Author: Peter Chiu <chui-hao.chiu@xxxxxxxxxxxx>
Date: Fri Jan 26 17:09:12 2024 +0800
wifi: mt76: mt7996: check txs format before getting skb by pid
[ Upstream commit 9c9c25f1dcdd98fffda564d2073f26219c84a2c3 ]
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 <chui-hao.chiu@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index 53258488d49f3..a8414fbb07c82 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -1188,25 +1188,28 @@ mt7996_mac_add_txs_skb(struct mt7996_dev *dev, struct mt76_wcid *wcid,
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;
+ /* 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.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) {
