Commit b747fa34 authored by Ryder Lee's avatar Ryder Lee Committed by Felix Fietkau
Browse files

mt76: mt7915: drop zero-length packet to avoid Tx hang 



Hardware wouldn't add LLC-SNAP when skb->data_len is 0, which causes
Tx hang, so add a check to drop this kind of packet.

Tested-by: default avatarBo Jiao <bo.jiao@mediatek.com>
Signed-off-by: default avatarRyder Lee <ryder.lee@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent b8135057

drivers/net/wireless/mediatek/mt76/mt7915/mac.c

+3 −0
Original line number Diff line number Diff line
@@ -942,6 +942,9 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, 
	int id, i, nbuf = tx_info->nbuf - 1;

	u8 *txwi = (u8 *)txwi_ptr;



	if (unlikely(tx_info->skb->len <= ETH_HLEN))

		return -EINVAL;



	if (!wcid)

		wcid = &dev->mt76.global_wcid;