mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
kfraser@localhost.localdomain
06809a93ad
The scripts are partly based on work by Daniel P. Berrange. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
101 lines
2.6 KiB
Bash
Executable File
101 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
|
|
#============================================================================
|
|
# /etc/xen/vif-bridge
|
|
#
|
|
# Script for configuring a vif in bridged 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 this script is the default.
|
|
#
|
|
# Usage:
|
|
# vif-bridge (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:
|
|
# bridge bridge to add the vif to (optional). Defaults to searching for the
|
|
# bridge itself.
|
|
# ip list of IP networks for the vif, space-separated (optional).
|
|
#
|
|
# up:
|
|
# Enslaves the vif interface to the bridge and adds iptables rules
|
|
# for its ip addresses (if any).
|
|
#
|
|
# down:
|
|
# Removes the vif interface from the bridge and removes the iptables
|
|
# rules for its ip addresses (if any).
|
|
#============================================================================
|
|
|
|
dir=$(dirname "$0")
|
|
. "$dir/vif-common.sh"
|
|
|
|
bridge=${bridge:-}
|
|
bridge=$(xenstore_read_default "$XENBUS_PATH/bridge" "$bridge")
|
|
|
|
if [ -z "$bridge" ]
|
|
then
|
|
bridge=$(brctl show | cut -d "
|
|
" -f 2 | cut -f 1)
|
|
|
|
if [ -z "$bridge" ]
|
|
then
|
|
fatal "Could not find bridge, and none was specified"
|
|
fi
|
|
else
|
|
#
|
|
# Old style bridge setup with netloop, used to have a bridge name
|
|
# of xenbrX, enslaving pethX and vif0.X, and then configuring
|
|
# eth0.
|
|
#
|
|
# New style bridge setup does not use netloop, so the bridge name
|
|
# is ethX and the physical device is enslaved pethX
|
|
#
|
|
# So if...
|
|
#
|
|
# - User asks for xenbrX
|
|
# - AND xenbrX doesn't exist
|
|
# - AND there is a ethX device which is a bridge
|
|
#
|
|
# ..then we translate xenbrX to ethX
|
|
#
|
|
# This lets old config files work without modification
|
|
#
|
|
if [ ! -e "/sys/class/net/$bridge" ] && [ -z "${bridge##xenbr*}" ]
|
|
then
|
|
if [ -e "/sys/class/net/eth${bridge#xenbr}/bridge" ]
|
|
then
|
|
bridge="eth${bridge#xenbr}"
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
RET=0
|
|
ip link show $bridge 1>/dev/null 2>&1 || RET=1
|
|
if [ "$RET" -eq 1 ]
|
|
then
|
|
fatal "Could not find bridge device $bridge"
|
|
fi
|
|
|
|
case "$command" in
|
|
online)
|
|
setup_bridge_port "$vif"
|
|
add_to_bridge "$bridge" "$vif"
|
|
;;
|
|
|
|
offline)
|
|
do_without_error brctl delif "$bridge" "$vif"
|
|
do_without_error ifconfig "$vif" down
|
|
;;
|
|
esac
|
|
|
|
handle_iptable
|
|
|
|
log debug "Successful vif-bridge $command for $vif, bridge $bridge."
|
|
if [ "$command" == "online" ]
|
|
then
|
|
success
|
|
fi
|