vlan_do_receive   211 include/linux/if_vlan.h extern bool vlan_do_receive(struct sk_buff **skb);
vlan_do_receive  4805 net/core/dev.c 		if (vlan_do_receive(&skb))
vlan_do_receive  4849 net/core/dev.c 			if (vlan_do_receive(&skb))