prv-net-helper.in

#!/bin/bash

source @datadir@/gnt-networking/common.sh

function usage {
	echo "Usage: $0 <mode> <parent interface> <prv min> <prv max> <offset>"
	exit 1
}

if [ $# -ne 5 ]; then
	usage
fi

function up {
	iface=$1
	prv_min=$2
	prv_max=$3
	offset=$4

	echo "Adding VLANs $2 - $3"
	if [ ! -f /proc/net/vlan/config ]; then
		$MODPROBE 8021q
	fi
	$VCONFIG set_name_type DEV_PLUS_VID_NO_PAD
	for prv in $(seq $prv_min $prv_max); do
		vlan=$(($prv+$offset))
		bridge=prv$prv

		$VCONFIG add $iface $vlan
		$IP_CMD link set dev $iface.$vlan up
		$BRCTL addbr $bridge
		$BRCTL setfd $bridge 0
		$BRCTL addif $bridge $iface.$vlan # dev_plus_vid
		$IP_CMD link set dev $bridge up
	done
}

function down {
	iface=$1
	prv_min=$2
	prv_max=$3
	offset=$4

	echo "Removing VLANs $2 - $3"
	for prv in $(seq $prv_min $prv_max); do
		vlan=$(($prv+$offset))
		bridge=prv$prv

		(
		$IP_CMD link set dev $bridge down
		$BRCTL delif $bridge $iface.$vlan # dev_plus_vid
		$VCONFIG rem $iface.$vlan
		$BRCTL delbr $bridge
		) 2>/dev/null
	done
}

mode=$1; shift
if [ "$mode" = "up" ]; then
	up $@
elif [ "$mode" = "down" ]; then
	down $@
else
	usage
fi