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

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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]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Ryder Lee
2021-01-04 18:30:34 +01:00
committed by Felix Fietkau
parent 062f3f4f06
commit dbba9b9933
1 changed files with 3 additions and 0 deletions
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mt7915/mac.c
+3
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@@ -954,6 +954,9 @@ 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;