diff options
| author | Ryder Lee <ryder.lee@mediatek.com> | 2020-12-29 12:15:30 +0800 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-01-26 20:07:47 +0100 |
| commit | b747fa343817fd322b4463dda99d28fc51e19c52 (patch) | |
| tree | e5ff121063a7f163e0468e758bdae6adbeaa18a6 /drivers/net | |
| parent | b8135057988e57f498e85eeaf133cacac2de3a10 (diff) | |
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: Bo Jiao <bo.jiao@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index dab46bd5d05d..ecabab77a913 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; |