| 1 | #!/bin/bash |
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| 2 | |
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| 3 | |
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| 4 | |
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| 5 | |
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| 6 | #============================================================================ |
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| 7 | # /etc/xen/vif-route |
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| 8 | # |
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| 9 | # Script for configuring a vif in routed mode. |
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| 10 | # The hotplugging system will call this script if it is specified either in |
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| 11 | # the device configuration given to Xend, or the default Xend configuration |
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| 12 | # in /etc/xen/xend-config.sxp. If the script is specified in neither of those |
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| 13 | # places, then vif-bridge is the default. |
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| 14 | # |
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| 15 | # Usage: |
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| 16 | # vif-route (add|remove|online|offline) |
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| 17 | # |
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| 18 | # Environment vars: |
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| 19 | # vif vif interface name (required). |
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| 20 | # XENBUS_PATH path to this device's details in the XenStore (required). |
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| 21 | # Read from the store: |
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| 22 | # ip list of IP networks for the vif, space-separated (default given in |
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| 23 | # this script). |
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| 24 | # V6PREFIX prefix of v6 address to use |
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| 25 | # Note that the v6 support is kind of broken because there's not really a way to populate the v6 prefix |
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| 26 | # This script will set up proxy arp for any ip addresses that are being routed |
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| 27 | |
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| 28 | #============================================================================ |
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| 29 | |
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| 30 | dir=$(dirname "$0") |
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| 31 | . "$dir/vif-common.sh" |
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| 32 | |
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| 33 | main_ip=$(dom0_ip) |
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| 34 | |
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| 35 | case "$command" in |
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| 36 | online) |
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| 37 | ifconfig ${vif} ${main_ip} netmask 255.255.255.255 up |
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| 38 | echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp |
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| 39 | echo 1 >/proc/sys/net/ipv4/conf/${vif}/rp_filter |
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| 40 | ipcmd='add' |
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| 41 | cmdprefix='' |
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| 42 | ;; |
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| 43 | offline) |
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| 44 | do_without_error ifdown ${vif} |
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| 45 | if [ -f /var/run/radvd/radvd.pid.${vif} ] ; then |
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| 46 | do_without_error kill `cat /var/run/radvd/radvd.pid.${vif}` |
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| 47 | fi |
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| 48 | ipcmd='del' |
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| 49 | cmdprefix='do_without_error' |
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| 50 | ;; |
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| 51 | esac |
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| 52 | |
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| 53 | v6prefix=${v6prefix:-} |
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| 54 | v6prefix=$(xenstore_read_default "$XENBUS_PATH/v6prefix" "$v6prefix") |
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| 55 | |
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| 56 | if [ "${ip}" ] ; then |
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| 57 | # If we've been given a list of IP addresses, then add routes from dom0 to |
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| 58 | # the guest using those addresses. |
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| 59 | for addr in ${ip} ; do |
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| 60 | ${cmdprefix} ip route ${ipcmd} ${addr} dev ${vif} src ${main_ip} |
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| 61 | arpspoof -i eth0 ${addr}& |
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| 62 | sleep 5 |
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| 63 | kill %arpspoof |
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| 64 | done |
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| 65 | fi |
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| 66 | |
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| 67 | if [ x${v6prefix} != x ] ; then |
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| 68 | sed -e "s/@interface@/${vif}/" -e "s+@prefix@+${v6prefix}+" /etc/xen/radvd.conf.template >/var/run/radvd.conf.${vif} |
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| 69 | ${cmdprefix} ip -6 addr ${ipcmd} fe80::/64 scope link dev ${vif} |
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| 70 | if [ $1 = online ] ; then |
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| 71 | radvd -u radvd -C /var/run/radvd.conf.${vif} -p /var/run/radvd/radvd.pid.${vif} |
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| 72 | fi |
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| 73 | ${cmdprefix} ip -6 route ${ipcmd} ${v6prefix} dev ${vif} |
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| 74 | fi |
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| 75 | |
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| 76 | handle_iptable |
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| 77 | |
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| 78 | log debug "Successful vif-route $command for $vif." |
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| 79 | if [ "$command" == "online" ] |
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| 80 | then |
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| 81 | success |
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| 82 | fi |
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