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- #!/bin/bash
- #============================================================================
- # /etc/xen/vif-route-qubes
- #
- # 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).
- #============================================================================
- dir=$(dirname "$0")
- . "$dir/vif-common.sh"
- #main_ip=$(dom0_ip)
- lockfile=/var/run/xen-hotplug/vif-lock
- case "$command" in
- online)
- ifconfig ${vif} up
- echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp
- ipcmd='add'
- iptables_cmd='-I PREROUTING 1'
- cmdprefix=''
- ;;
- offline)
- do_without_error ifdown ${vif}
- ipcmd='del'
- iptables_cmd='-D PREROUTING'
- cmdprefix='do_without_error'
- ;;
- esac
- domid=${vif/vif/}
- domid=${domid/.*/}
- # metric must be possitive, but prefer later interface
- # 32752 is max XID aka domid
- metric=$[ 32752 - $domid ]
- if [ "${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} metric $metric
- done
- echo -e "*raw\n$iptables_cmd -i ${vif} ! -s ${ip} -j DROP\nCOMMIT" | \
- ${cmdprefix} flock $lockfile iptables-restore --noflush
- back_ip=`qubesdb-read /qubes-netvm-gateway`
- ${cmdprefix} ip addr ${ipcmd} ${back_ip}/32 dev ${vif}
- fi
- log debug "Successful vif-route-qubes $command for $vif."
- if [ "$command" = "online" ]
- then
- # disable tx checksumming offload, apparently it doesn't work with our ancient qemu in stubdom
- do_without_error ethtool -K $vif tx off
- success
- fi
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