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wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP

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Problem:
MCU command timeout while the firmware state is normal, and the
firmware keeps showing the error log "ERROR!! NO PAUSE...".

Root cause:
If the MLD_ID field in the TXD is neither the primary link id nor the
secondary link id, it may lead to a firmware busy loop when the third
link is in power saving mode.

Remap frames directed to a third link to the primary link wcid. Since
TX status events and txfree completions carry the wcid the firmware
saw, use the remapped wcid for packet id tracking and non-AQL packet
accounting as well, while the frame keeps its original link context
for addressing, band and OMAC selection.

Fixes: 85cd5534a3f2 ("wifi: mt76: mt7996: use correct link_id when filling TXD and TXP")
Signed-off-by: Peter Chiu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Peter Chiu
2026-07-22 10:51:04 +02:00
committed by Felix Fietkau
parent b05c7c1df2
commit 4efe882252
3 changed files with 31 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt7996/main.c
+1 -1
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@@ -1578,7 +1578,7 @@ static void mt7996_tx(struct ieee80211_hw *hw,
if (msta_link)
wcid = &msta_link->wcid;
}
mt76_tx(mphy, control->sta, wcid, skb);
mt76_tx(mphy, control->sta, mt7996_get_tx_wcid(wcid), skb);
unlock:
rcu_read_unlock();
}