vlan_eth_hdr
hdr = vlan_eth_hdr(skb);
is_ip = is_ip_proto(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto);
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
vhdr = vlan_eth_hdr(skb);
vhdr = vlan_eth_hdr(skb);
return vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);