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wifi: mt76: mt7921: fix skb leak by txs missing in AMSDU

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txs may be dropped if the frame is aggregated in AMSDU. When the problem
shows up, some SKBs would be hold in driver to cause network stopped
temporarily. Even if the problem can be recovered by txs timeout handling,
mt7921 still need to disable txs in AMSDU to avoid this issue.

Cc: stable@vger.kernel.org
Fixes: 163f4d22c1 ("mt76: mt7921: add MAC support")
Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Deren Wu 2023-05-17 17:18:24 +08:00 committed by Felix Fietkau
parent 9aecfa754c
commit b642f4c5f3
1 changed files with 5 additions and 2 deletions
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7
drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
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@ -495,6 +495,7 @@ void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
BSS_CHANGED_BEACON_ENABLED));
bool inband_disc = !!(changed & (BSS_CHANGED_UNSOL_BCAST_PROBE_RESP |
BSS_CHANGED_FILS_DISCOVERY));
bool amsdu_en = wcid->amsdu;
if (vif) {
struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;
@ -554,12 +555,14 @@ void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
txwi[4] = 0;
val = FIELD_PREP(MT_TXD5_PID, pid);
if (pid >= MT_PACKET_ID_FIRST)
if (pid >= MT_PACKET_ID_FIRST) {
val |= MT_TXD5_TX_STATUS_HOST;
amsdu_en = amsdu_en && !is_mt7921(dev);
}
txwi[5] = cpu_to_le32(val);
txwi[6] = 0;
txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;
txwi[7] = amsdu_en ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;
if (is_8023)
mt76_connac2_mac_write_txwi_8023(txwi, skb, wcid);