1 files changed, 124 insertions, 0 deletions
diff --git a/network/openvswitch/xen/network-openvswitch b/network/openvswitch/xen/network-openvswitch
new file mode 100644
index 0000000000..45cda0b195
--- /dev/null
+++ b/network/openvswitch/xen/network-openvswitch
@@ -0,0 +1,124 @@
+#!/bin/bash
+#============================================================================
+# Default Xen network start/stop script.
+# Xend calls a network script when it starts.
+# The script name to use is defined in ${XEN_CONFIG_DIR}/xend-config.sxp
+# in the network-script field.
+#
+# This script creates a virtual switch (default ${netdev}) and adds a
+# device (defaults to eth0) to it.  The interface that this Open vSwitch
+# is created on should not have a working IP address and will be used as
+# a switch for Xen domU's.
+#
+# Usage:
+# network-openvswitch (start|stop|status) {VAR=VAL}*
+#
+# Vars:
+# bridge     The bridge to use (default xenvs0).
+# netdev     The interface to add to the bridge (default eth0).  This
+#            device should not be configured with an IP address.  If so
+#            this script will tear down the interface and bring it back up
+#            without an IP address.
+#
+# start:
+# Creates the bridge as bridge
+# Enslaves netdev to bridge
+#
+# stop:
+# Removes netdev from the bridge
+# Deletes bridge
+#
+# status:
+# Print addresses, interfaces
+#
+#============================================================================
+
+dir=$(dirname "$0")
+. "$dir/logging.sh"
+. "$dir/xen-script-common.sh"
+. "$dir/xen-network-common.sh"
+. "$dir/locking.sh"
+
+findCommand "$@"
+evalVariables "$@"
+
+netdev=${netdev:-eth0}
+bridge=${bridge:-ovs0}
+
+addr=`ip addr show dev ${netdev} | egrep '^ *inet' | sed -e 's/ *inet //' -e 's/ .*//'`
+if [ -n "$addr" ]; then
+    echo "Invalid device: ${netdev} is up and has a valid IP address!" >&2
+    exit 1
+fi
+
+show_status () {
+    local dev=$1
+    local bridge=$2
+    
+    echo '============================================================'
+    echo 'vSwitch interfaces'
+    ovs-vsctl list-ifaces ${bridge}
+    echo ' '
+    echo 'vSwitch ports'
+    ovs-vsctl list-ports ${bridge}
+    echo '============================================================'
+}
+
+op_start () {
+    if [ "${bridge}" = "null" ] ; then
+	return
+    fi
+
+    ifconfig "${netdev}" down
+    ifconfig "${netdev}" 0.0.0.0 up
+    ovs-vsctl -- --may-exist add-br ${bridge}
+    ifconfig "${bridge}" 0.0.0.0 up
+    ovs-vsctl -- --may-exist add-port ${bridge} ${netdev}
+
+    # Remove any stale ports from last time virtual switch was running.
+    # Open vSwitch has the habit of remembering port settings between
+    # runs.
+    for port in $(ovs-vsctl list-ports ${bridge})
+    do
+	if [ "${port}" != "${netdev}" ]
+	then
+	    ifconfig "${port}" down
+	    ovs-vsctl del-port ${port}
+	fi
+    done
+}
+
+op_stop () {
+    if [ "${bridge}" = "null" ]; then
+	return
+    fi
+
+    # Remove all ports from virtual switch.
+    for port in $(ovs-vsctl list-ports ${bridge})
+    do
+	ifconfig "${port}" down
+	ovs-vsctl del-port ${port}
+    done
+
+    ifconfig "${bridge}" down
+    ovs-vsctl -- --if-exists del-br ${bridge}
+}
+
+case "$command" in
+    start)
+	op_start
+	;;
+    
+    stop)
+	op_stop
+	;;
+
+    status)
+	show_status ${netdev} ${bridge}
+	;;
+
+    *)
+	echo "Unknown command: $command" >&2
+	echo 'Valid commands are: start, stop, status' >&2
+	exit 1
+esac