#!/bin/sh

case "$IFACE" in
	vlan0*)
		vconfig set_name_type VLAN_PLUS_VID
		VLANID=`echo $IFACE|sed "s/vlan0*//"`
		;;
	vlan*)
		vconfig set_name_type VLAN_PLUS_VID_NO_PAD
		VLANID=`echo $IFACE|sed "s/vlan*//"`
		;;
	eth*.0?*)
		vconfig set_name_type DEV_PLUS_VID
		VLANID=`echo $IFACE|sed "s/eth[0-9][0-9]*\.0*//g"`
		IF_VLAN_RAW_DEVICE=`echo $IFACE|sed "s/\(eth[0-9][0-9]*\)\..*/\1/"`
		;;
	eth*.*)
		vconfig set_name_type DEV_PLUS_VID_NO_PAD
		VLANID=`echo $IFACE|sed "s/eth[0-9][0-9]*\.*//g"`
		IF_VLAN_RAW_DEVICE=`echo $IFACE|sed "s/\(eth[0-9][0-9]*\)\..*/\1/"`
		;;
	*)      exit 0
		;;
esac

if [ "$IF_VLAN_RAW_DEVICE" != "" ]
then
        [ -x /sbin/vconfig ] || exit 0
        if ! grep -q "$IF_VLAN_RAW_DEVICE" /proc/net/dev
        then
                echo "$IF_VLAN_RAW_DEVICE does not exist, unable to create $IFACE"
                exit 1
        fi

        # enable vlan 
	if [ -d /proc/switch/$IF_VLAN_RAW_DEVICE ]
	then
		echo 1 > /proc/switch/$IF_VLAN_RAW_DEVICE/enable_vlan
	fi
        ip link set up dev $IF_VLAN_RAW_DEVICE
        vconfig add $IF_VLAN_RAW_DEVICE $VLANID
	# change mac link layer address
	if [ "$IF_MAC_ADDRESS" != "" ]
	then
		ip link set $IF_VLAN_RAW_DEVICE.$VLANID address $IF_MAC_ADDRESS
	fi
        ip link set up dev $IF_VLAN_RAW_DEVICE.$VLANID

	# configure switch ports
	if [ "$IF_SWITCH_PORTS" != "" ]
	then
		echo "$IF_SWITCH_PORTS" > /proc/switch/$IF_VLAN_RAW_DEVICE/vlan/$VLANID/ports
	fi
fi