#!/bin/bash
#============================================================================
# ${XEN_SCRIPT_DIR}/vif-route
#
# Script for configuring a vif in routed mode.
#
# Usage:
# vif-route (add|remove|online|offline)
#
# Environment vars:
# dev         vif interface name (required).
# XENBUS_PATH path to this device's details in the XenStore (required).
#
# Read from the store:
# ip      list of IP networks for the vif, space-separated (default given in
#         this script).
#============================================================================

dir=$(dirname "$0")
. "${dir}/vif-common.sh"

main_ip=$(dom0_ip)

case "${command}" in
    add|online)
        ifconfig ${dev} ${main_ip} netmask 255.255.255.255 up
        echo 1 >/proc/sys/net/ipv4/conf/${dev}/proxy_arp
        ipcmd='add'
        cmdprefix=''
        ;;
    remove|offline)
        do_without_error ifdown ${dev}
        ipcmd='del'
        cmdprefix='do_without_error'
        ;;
esac

case "${type_if}" in
    tap)
	metric=1
	;;
    vif)
	metric=2
	;;
    *)
	fatal "Unrecognised interface type ${type_if}"
	;;
esac

# If we've been given a list of IP addresses, then add routes from dom0 to
# the guest using those addresses.
for addr in ${ip} ; do
    ${cmdprefix} ip route ${ipcmd} ${addr} dev ${dev} src ${main_ip} metric ${metric}
done

handle_iptable

call_hooks vif post

log debug "Successful vif-route ${command} for ${dev}."
if [ "${command}" = "online" ]
then
    success
fi
