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: Bo Jiao <[email protected]>
Signed-off-by: Ryder Lee <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index f504eeb221f9..a2d63b7a346a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -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;
--
2.18.0