Synnefo » snf-network

#!/bin/sh

#

add_vlan() {

	if [ -n "`echo -n "$1" | tr -d '[0-9]'`" ]; then

		echo "Invalid vlan tag $1"

		exit 1

	fi

	vlan=$1

	ifce=$2

	if [ -d "/sys/class/net/vlan${vlan}/bridge" ]; then

		echo "Vlan $vlan already configured"

		exit 0

	fi

	if ( grep -q "iface vlan${vlan}$" /etc/network/interfaces ); then

		echo "Vlan $vlan configured but down, bringing up"

	else

		echo "Adding vlan $vlan to /etc/network/interfaces"

		cat >>/etc/network/interfaces <<EOF

auto vlan${vlan}

iface vlan${vlan} inet manual

	bridge_ports	${ifce}.${vlan}

	bridge_stp	off

	bridge_maxwait	0

	bridge_fd	0

EOF

	fi

	/sbin/ifup "vlan${vlan}" >/dev/null 2>&1

	exit 0

}

list_vlans() {

	for iface in /sys/class/net/vlan*; do

		if [ -d "$iface/bridge" ]; then

			vlan=`basename "$iface"`

			( grep -q "iface $vlan$" /etc/network/interfaces )

			if [ $? == 0 ]; then

				echo "${vlan##vlan}"

			else

				echo "${vlan##vlan} (unconfigured)"

			fi

		fi

	done

}

case "$1" in

	add)

	if [ x"$3" != x"" ]; then

		ifce=$3

	else

		ifce="bond0"

	fi

	add_vlan "$2" "$ifce"

	;;

	remove)

	remove_vlan "$2"

	;;

	list)

	list_vlans

	;;

	*)

	echo "Usage: vlan (add number [ifce="bond0"]|remove number|list)"

	;;

esac;