vlan_dev_get_egress_qos_mask
return (vlan_dev_get_egress_qos_mask(vlan_ndev, prio) &
prio = (vlan_dev_get_egress_qos_mask(ndev, prio) & VLAN_PRIO_MASK)
u16 vlan_qos = vlan_dev_get_egress_qos_mask(ndev, prio);
vlan |= vlan_dev_get_egress_qos_mask(neigh->dev, priority);
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);