#!/bin/bash #============================================================================ # /etc/xen/vif-route # # Script for configuring a vif in routed mode. # The hotplugging system will call this script if it is specified either in # the device configuration given to Xend, or the default Xend configuration # in /etc/xen/xend-config.sxp. If the script is specified in neither of those # places, then vif-bridge is the default. # # Usage: # vif-route (add|remove|online|offline) # # Environment vars: # vif 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). # V6PREFIX prefix of v6 address to use # Note that the v6 support is kind of broken because there's not really a way to populate the v6 prefix # This script will set up proxy arp for any ip addresses that are being routed #============================================================================ dir=$(dirname "$0") . "$dir/vif-common.sh" main_ip=$(dom0_ip) case "$command" in online) ifconfig ${vif} ${main_ip} netmask 255.255.255.255 up echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp echo 1 >/proc/sys/net/ipv4/conf/${vif}/rp_filter ipcmd='add' cmdprefix='' ;; offline) do_without_error ifdown ${vif} if [ -f /var/run/radvd/radvd.pid.${vif} ] ; then do_without_error kill `cat /var/run/radvd/radvd.pid.${vif}` fi ipcmd='del' cmdprefix='do_without_error' ;; esac v6prefix=${v6prefix:-} v6prefix=$(xenstore_read_default "$XENBUS_PATH/v6prefix" "$v6prefix") if [ "${ip}" ] ; then # 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 ${vif} src ${main_ip} arpspoof -i eth0 ${addr}& sleep 5 kill %arpspoof done fi if [ x${v6prefix} != x ] ; then sed -e "s/@interface@/${vif}/" -e "s+@prefix@+${v6prefix}+" /etc/xen/radvd.conf.template >/var/run/radvd.conf.${vif} ${cmdprefix} ip -6 addr ${ipcmd} fe80::/64 scope link dev ${vif} if [ $1 = online ] ; then radvd -u radvd -C /var/run/radvd.conf.${vif} -p /var/run/radvd/radvd.pid.${vif} fi ${cmdprefix} ip -6 route ${ipcmd} ${v6prefix} dev ${vif} fi handle_iptable log debug "Successful vif-route $command for $vif." if [ "$command" == "online" ] then success fi