diff options
| -rw-r--r-- | net/ethernet/eth.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 8f032bae60ad..5dc638cad2e1 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -156,7 +156,9 @@ EXPORT_SYMBOL(eth_rebuild_header); */ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev) { - struct ethhdr *eth; + unsigned short _service_access_point; + const unsigned short *sap; + const struct ethhdr *eth; skb->dev = dev; skb_reset_mac_header(skb); @@ -194,7 +196,8 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev) * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This * won't work for fault tolerant netware but does for the rest. */ - if (unlikely(skb->len >= 2 && *(unsigned short *)(skb->data) == 0xFFFF)) + sap = skb_header_pointer(skb, 0, sizeof(*sap), &_service_access_point); + if (sap && *sap == 0xFFFF) return htons(ETH_P_802_3); /* |