IFF_802_1Q_VLAN 72 include/linux/if_vlan.h return dev->priv_flags & IFF_802_1Q_VLAN; IFF_802_1Q_VLAN 1527 include/linux/netdevice.h #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN IFF_802_1Q_VLAN 799 net/8021q/vlan_dev.c dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;