VLAN_HLEN 303 include/linux/if_vlan.h if (skb_cow_head(skb, VLAN_HLEN) < 0) { VLAN_HLEN 307 include/linux/if_vlan.h veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); VLAN_HLEN 310 include/linux/if_vlan.h memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); VLAN_HLEN 311 include/linux/if_vlan.h skb->mac_header -= VLAN_HLEN; VLAN_HLEN 31 include/linux/netfilter_bridge.h return VLAN_HLEN;