e1000_vlan_used
static bool e1000_vlan_used(struct e1000_adapter *adapter);
if (e1000_vlan_used(adapter))
if (!e1000_vlan_used(adapter))
if (!e1000_vlan_used(adapter))
if (!e1000_vlan_used(adapter))
if (!e1000_vlan_used(adapter))