From b642f4c5f3de0a8f47808d32b1ebd9c427a42a66 Mon Sep 17 00:00:00 2001 From: Deren Wu Date: Wed, 17 May 2023 17:18:24 +0800 Subject: [PATCH] wifi: mt76: mt7921: fix skb leak by txs missing in AMSDU 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: 163f4d22c118 ("mt76: mt7921: add MAC support") Reviewed-by: Shayne Chen Signed-off-by: Deren Wu Reviewed-by: Simon Horman Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c index 3501f0503118..f481ca3a0db8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c @@ -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); -- 2.20.1