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#!/bin/sh
# This file is based on /etc/xensource/script/vif from Citrix XenServer 5.0.0.
# The original file did not contain a copyright notice or license statement.
#
# Copyright (C) 2009 Nicira Networks, Inc.
# CA-23900: Warning: when VIFs are added to windows guests with PV drivers the backend vif device is registered,
# unregistered and then registered again. This causes the udev event to fire twice and this script runs twice.
# Since the first invocation of the script races with the device unregistration, spurious errors are possible
# which will be logged but are safe to ignore since the second script invocation should complete the operation.
# Note that each script invocation is run synchronously from udev and so the scripts don't race with each other.
# Keep other-config/ keys in sync with device.ml:vif_udev_keys
cfg_mod="/root/vswitch/bin/ovs-cfg-mod"
service="/sbin/service"
TYPE=`echo ${XENBUS_PATH} | cut -f 2 -d '/'`
DOMID=`echo ${XENBUS_PATH} | cut -f 3 -d '/'`
DEVID=`echo ${XENBUS_PATH} | cut -f 4 -d '/'`
XAPI=/xapi/${DOMID}/hotplug/${TYPE}/${DEVID}
HOTPLUG=/xapi/${DOMID}/hotplug/${TYPE}/${DEVID}
PRIVATE=/xapi/${DOMID}/private/${TYPE}/${DEVID}
BRCTL=/usr/sbin/brctl
IP=/sbin/ip
handle_promiscuous()
{
local arg=$(xenstore-read "${PRIVATE}/other-config/promiscuous")
if [ $? -eq 0 -a -n "${arg}" ] ; then
case "${arg}" in
true|on) echo 1 > /sys/class/net/${vif}/brport/promisc ;;
*) echo 0 > /sys/class/net/${vif}/brport/promisc ;;
esac
fi
}
handle_ethtool()
{
local opt=$1
local arg=$(xenstore-read "${PRIVATE}/other-config/ethtool-${opt}")
if [ $? -eq 0 -a -n "${arg}" ] ; then
case "${arg}" in
true|on) /sbin/ethtool -K "${vif}" "${opt}" on ;;
false|off) /sbin/ethtool -K "${vif}" "${opt}" off ;;
*) logger -t scripts-vif "Unknown ethtool argument ${opt}=${arg} on ${vif}/${VIFUUID}" ;;
esac
fi
}
handle_mtu()
{
local mtu=$(xenstore-read "${PRIVATE}/MTU")
if [ $? -eq 0 -a -n "${mtu}" ]; then
echo "${mtu}" > /sys/class/net/${vif}/mtu
fi
}
add_to_bridge()
{
local address=$(xenstore-read "${PRIVATE}/bridge-MAC")
if [ $? -ne 0 -o -z "${address}" ]; then
logger -t scripts-vif "Failed to read ${PRIVATE}/bridge-MAC from xenstore"
fi
local bridge=$(xenstore-read "${PRIVATE}/bridge")
if [ $? -ne 0 -o -z "${bridge}" ]; then
logger -t scripts-vif "Failed to read ${PRIVATE}/bridge from xenstore"
fi
logger -t scripts-vif "Adding ${vif} to ${bridge} with address ${address}"
vid=
if [ -e "/etc/openvswitch/br-$bridge" ]; then
. "/etc/openvswitch/br-$bridge"
if [ -n "$VLAN_SLAVE" -a -n "$VLAN_VID" ]; then
bridge=$VLAN_SLAVE
vid="--add=vlan.$vif.tag=$VLAN_VID"
fi
fi
${IP} link set "${vif}" down || logger -t scripts-vif "Failed to ip link set ${vif} down"
${IP} link set "${vif}" arp off || logger -t scripts-vif "Failed to ip link set ${vif} arp off"
${IP} link set "${vif}" multicast off || logger -t scripts-vif "Failed to ip link set ${vif} multicast off"
${IP} link set "${vif}" address "${address}" || logger -t scripts-vif "Failed to ip link set ${vif} address ${address}"
${IP} addr flush "${vif}" || logger -t scripts-vif "Failed to ip addr flush ${vif}"
$cfg_mod -F /etc/ovs-vswitchd.conf \
--del-match="bridge.*.port=$vif" \
--del-match="vlan.$vif.[!0-9]*" \
--del-match="port.$vif.[!0-9]*" \
--add="bridge.$bridge.port=$vif" \
$vid -c
$service vswitch reload
${IP} link set "${vif}" up || logger -t scripts-vif "Failed to ip link set ${vif} up"
}
echo Called as "$@" "$TYPE" "$DOMID" "$DEVID" | logger -t scripts-vif
case "$1" in
online)
handle_ethtool rx
handle_ethtool tx
handle_ethtool sg
handle_ethtool tso
handle_ethtool ufo
handle_ethtool gso
handle_mtu
add_to_bridge
handle_promiscuous
xenstore-write "${HOTPLUG}/vif" "${vif}"
xenstore-write "${HOTPLUG}/hotplug" "online"
# xs-xen.pq.hq:91e986b8e49f netback-wait-for-hotplug
xenstore-write "/local/domain/0/backend/vif/${DOMID}/${DEVID}/hotplug-status" "connected"
;;
remove)
xenstore-rm "${HOTPLUG}/hotplug"
vif=vif${DOMID}.${DEVID}
logger -t scripts-vif "${vif} has been removed"
$cfg_mod -vANY:console:emer -F /etc/ovs-vswitchd.conf \
--del-match="bridge.*.port=${vif}" \
--del-match="vlan.${vif}.[!0-9]*" \
--del-match="port.${vif}.[!0-9]*" -c
;;
esac
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