dst mac src mac etype

dst mac src mac proto TCI etypestruct vlan_ethhdr { unsigned char h_dest[ETH_ALEN]; unsigned char h_source[ETH_ALEN]; __be16 h_vlan_proto; //0x8100 __be16 h_vlan_TCI; 1-12 VID unsigned short h_vlan_encapsulated_proto;};

struct ethhdr {unsigned char h_dest[ETH_ALEN];unsigned char h_source[ETH_ALEN]; _

_be16 h_proto;}

process_backlog

netif_receive_skb

dev->poll dev->poll

vlan_skb_recvip_recv

remove vlan header

skb->devskb->input_dev

VLAN IDreal device

vlan device 0vlan device 1

...

...

vlan_group

vlan_skb_recv

VLAN IDvlan private