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124 lines
3 KiB
Bash
124 lines
3 KiB
Bash
#!/bin/bash
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#============================================================================
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# Default Xen network start/stop script.
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# Xend calls a network script when it starts.
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# The script name to use is defined in ${XEN_CONFIG_DIR}/xend-config.sxp
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# in the network-script field.
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#
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# This script creates a virtual switch (default ${netdev}) and adds a
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# device (defaults to eth0) to it. The interface that this Open vSwitch
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# is created on should not have a working IP address and will be used as
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# a switch for Xen domU's.
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#
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# Usage:
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# network-openvswitch (start|stop|status) {VAR=VAL}*
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#
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# Vars:
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# bridge The bridge to use (default xenvs0).
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# netdev The interface to add to the bridge (default eth0). This
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# device should not be configured with an IP address. If so
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# this script will tear down the interface and bring it back up
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# without an IP address.
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#
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# start:
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# Creates the bridge as bridge
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# Enslaves netdev to bridge
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#
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# stop:
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# Removes netdev from the bridge
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# Deletes bridge
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#
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# status:
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# Print addresses, interfaces
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#
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#============================================================================
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dir=$(dirname "$0")
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. "$dir/logging.sh"
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. "$dir/xen-script-common.sh"
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. "$dir/xen-network-common.sh"
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. "$dir/locking.sh"
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findCommand "$@"
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evalVariables "$@"
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netdev=${netdev:-eth0}
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bridge=${bridge:-ovs0}
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addr=`ip addr show dev ${netdev} | egrep '^ *inet' | sed -e 's/ *inet //' -e 's/ .*//'`
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if [ -n "$addr" ]; then
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echo "Invalid device: ${netdev} is up and has a valid IP address!" >&2
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exit 1
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fi
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show_status () {
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local dev=$1
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local bridge=$2
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echo '============================================================'
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echo 'vSwitch interfaces'
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ovs-vsctl list-ifaces ${bridge}
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echo ' '
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echo 'vSwitch ports'
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ovs-vsctl list-ports ${bridge}
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echo '============================================================'
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}
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op_start () {
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if [ "${bridge}" = "null" ] ; then
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return
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fi
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ifconfig "${netdev}" down
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ifconfig "${netdev}" 0.0.0.0 up
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ovs-vsctl -- --may-exist add-br ${bridge}
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ifconfig "${bridge}" 0.0.0.0 up
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ovs-vsctl -- --may-exist add-port ${bridge} ${netdev}
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# Remove any stale ports from last time virtual switch was running.
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# Open vSwitch has the habit of remembering port settings between
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# runs.
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for port in $(ovs-vsctl list-ports ${bridge})
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do
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if [ "${port}" != "${netdev}" ]
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then
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ifconfig "${port}" down
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ovs-vsctl del-port ${port}
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fi
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done
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}
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op_stop () {
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if [ "${bridge}" = "null" ]; then
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return
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fi
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# Remove all ports from virtual switch.
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for port in $(ovs-vsctl list-ports ${bridge})
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do
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ifconfig "${port}" down
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ovs-vsctl del-port ${port}
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done
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ifconfig "${bridge}" down
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ovs-vsctl -- --if-exists del-br ${bridge}
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}
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case "$command" in
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start)
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op_start
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;;
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stop)
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op_stop
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;;
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status)
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show_status ${netdev} ${bridge}
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;;
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*)
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echo "Unknown command: $command" >&2
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echo 'Valid commands are: start, stop, status' >&2
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exit 1
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esac
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