xenserver/etc_xensource_scripts_vif

   1 #!/bin/sh
   2
   3 # Copyright (C) 2008,2009 Citrix Systems, Inc. All rights reserved.
   4 # Copyright (C) 2009 Nicira Networks, Inc.
   5
   6 # CA-23900: Warning: when VIFs are added to windows guests with PV drivers the backend vif device is registered,
   7 # unregistered and then registered again. This causes the udev event to fire twice and this script runs twice.
   8 # Since the first invocation of the script races with the device unregistration, spurious errors are possible
   9 # which will be logged but are safe to ignore since the second script invocation should complete the operation.
  10 # Note that each script invocation is run synchronously from udev and so the scripts don't race with each other.
  11
  12 # Keep other-config/ keys in sync with device.ml:vif_udev_keys
  13
  14 cfg_mod="/root/vswitch/bin/ovs-cfg-mod"
  15 dump_vif_details="/root/vswitch/scripts/dump-vif-details"
  16 service="/sbin/service"
  17
  18 TYPE=`echo ${XENBUS_PATH} | cut -f 2 -d '/'`
  19 DOMID=`echo ${XENBUS_PATH} | cut -f 3 -d '/'`
  20 DEVID=`echo ${XENBUS_PATH} | cut -f 4 -d '/'`
  21
  22 XAPI=/xapi/${DOMID}/hotplug/${TYPE}/${DEVID}
  23 HOTPLUG=/xapi/${DOMID}/hotplug/${TYPE}/${DEVID}
  24 PRIVATE=/xapi/${DOMID}/private/${TYPE}/${DEVID}
  25 BRCTL=/usr/sbin/brctl
  26 IP=/sbin/ip
  27
  28
  29 handle_promiscuous()
  30 {
  31     local arg=$(xenstore-read "${PRIVATE}/other-config/promiscuous")
  32     if [ $? -eq 0 -a -n "${arg}" ] ; then
  33         case "${arg}" in
  34             true|on) logger -t script-vif "${vif}: Promiscuous ports are not supported via vSwitch." ;;
  35             *) ;;
  36         esac
  37     fi
  38 }
  39
  40 handle_ethtool()
  41 {
  42     local opt=$1
  43     local arg=$(xenstore-read "${PRIVATE}/other-config/ethtool-${opt}")
  44     if [ $? -eq 0 -a -n "${arg}" ] ; then
  45         case "${arg}" in
  46             true|on)   /sbin/ethtool -K "${vif}" "${opt}" on ;;
  47             false|off) /sbin/ethtool -K "${vif}" "${opt}" off ;;
  48             *) logger -t scripts-vif "Unknown ethtool argument ${opt}=${arg} on ${vif}/${VIFUUID}" ;;
  49         esac
  50     fi
  51 }
  52
  53 handle_mtu()
  54 {
  55     local mtu=$(xenstore-read "${PRIVATE}/MTU")
  56     if [ $? -eq 0 -a -n "${mtu}" ]; then
  57         echo "${mtu}" > /sys/class/net/${vif}/mtu
  58     fi
  59 }
  60
  61 add_to_bridge()
  62 {
  63     local address=$(xenstore-read "${PRIVATE}/bridge-MAC")
  64     if [ $? -ne 0 -o -z "${address}" ]; then
  65         logger -t scripts-vif "Failed to read ${PRIVATE}/bridge-MAC from xenstore"
  66     fi
  67     local bridge=$(xenstore-read "${PRIVATE}/bridge")
  68     if [ $? -ne 0 -o -z "${bridge}" ]; then
  69         logger -t scripts-vif "Failed to read ${PRIVATE}/bridge from xenstore"
  70     fi
  71     logger -t scripts-vif "Adding ${vif} to ${bridge} with address ${address}"
  72
  73     vid=
  74     if [ -e "/var/lib/openvswitch/br-$bridge" ]; then
  75         . "/var/lib/openvswitch/br-$bridge"
  76         if [ -n "$VLAN_SLAVE" -a -n "$VLAN_VID" ]; then
  77             bridge=$VLAN_SLAVE
  78             vid="--add=vlan.$vif.tag=$VLAN_VID"
  79         fi
  80     fi
  81
  82     ${IP} link set "${vif}" down                        || logger -t scripts-vif "Failed to ip link set ${vif} down"
  83     ${IP} link set "${vif}" arp off                     || logger -t scripts-vif "Failed to ip link set ${vif} arp off"
  84     ${IP} link set "${vif}" multicast off               || logger -t scripts-vif "Failed to ip link set ${vif} multicast off"
  85     ${IP} link set "${vif}" address "${address}"        || logger -t scripts-vif "Failed to ip link set ${vif} address ${address}"
  86     ${IP} addr flush "${vif}"                           || logger -t scripts-vif "Failed to ip addr flush ${vif}"
  87
  88     local vif_details=$($dump_vif_details $DOMID $DEVID)
  89     if [ $? -ne 0 -o -z "${vif_details}" ]; then
  90             logger -t scripts-vif "Failed to retrieve vif details for vswitch"
  91     fi
  92
  93     $cfg_mod -F /etc/ovs-vswitchd.conf \
  94         --del-match="bridge.*.port=$vif" \
  95         --del-match="vlan.$vif.[!0-9]*" \
  96         --del-match="port.$vif.[!0-9]*" \
  97         --add="bridge.$bridge.port=$vif" \
  98         $vid $vif_details -c
  99     $service vswitch reload
 100
 101     ${IP} link set "${vif}" up                          || logger -t scripts-vif "Failed to ip link set ${vif} up"
 102 }
 103
 104 echo Called as "$@" "$TYPE" "$DOMID" "$DEVID" | logger -t scripts-vif
 105 case "$1" in
 106 online)
 107         handle_ethtool rx
 108         handle_ethtool tx
 109         handle_ethtool sg
 110         handle_ethtool tso
 111         handle_ethtool ufo
 112         handle_ethtool gso
 113
 114         handle_mtu
 115         add_to_bridge
 116         handle_promiscuous
 117
 118         xenstore-write "${HOTPLUG}/vif" "${vif}"
 119         xenstore-write "${HOTPLUG}/hotplug" "online"
 120
 121         # xs-xen.pq.hq:91e986b8e49f netback-wait-for-hotplug
 122         xenstore-write "/local/domain/0/backend/vif/${DOMID}/${DEVID}/hotplug-status" "connected"
 123
 124         ;;
 125 remove)
 126         xenstore-rm "${HOTPLUG}/hotplug"
 127         vif=vif${DOMID}.${DEVID}
 128         logger -t scripts-vif "${vif} has been removed"
 129         $cfg_mod -vANY:console:emer -F /etc/ovs-vswitchd.conf \
 130             --del-match="bridge.*.port=${vif}" \
 131             --del-match="vlan.${vif}.[!0-9]*" \
 132             --del-match="port.${vif}.[!0-9]*" -c
 133         $service vswitch reload
 134         ;;
 135 esac