1 files changed, 86 insertions, 0 deletions
diff --git a/network/openvswitch/xen/vif-openvswitch b/network/openvswitch/xen/vif-openvswitch
new file mode 100644
index 0000000000..bdcd7c46f7
--- /dev/null
+++ b/network/openvswitch/xen/vif-openvswitch
@@ -0,0 +1,86 @@
+#!/bin/bash
+#============================================================================
+# ${XEN_SCRIPT_DIR}/vif-openvswitch
+#
+# Script for configuring a vif using Open vSwitch.
+#
+# Usage:
+# vif-openvswitch (add|remove|online|offline)
+#
+# Environment vars:
+# vif         vif interface name (required).
+# XENBUS_PATH path to this device's details in the XenStore (required).
+#
+# Read from the store:
+# bridge  bridge to add the vif to (optional).  Defaults to searching for the
+#         bridge itself.
+#
+# up:
+# Enslaves the vif interface to the bridge.
+#
+# down:
+# Removes the vif interface from the bridge.
+#============================================================================
+
+dir=$(dirname "$0")
+. "$dir/vif-common.sh"
+
+bridge=${bridge:-}
+bridge=$(xenstore_read_default "$XENBUS_PATH/bridge" "$bridge")
+
+if [ -z "${bridge}" ]
+then
+    bridge=$(ovs-vsctl listbr | cut -d "
+" -f 1)
+
+    if [ -z "${bridge}" ]
+    then
+	fatal "Could not find bridge and none was specified"
+    fi
+fi
+
+tag=${tag:-}
+
+# Domain on VLAN tagged bridge?
+RET=0
+ovs-vsctl list-br | grep -c ${bridge} 1>/dev/null 2>&1 || RET=1
+if [ $RET -eq 1 ]
+then
+    if [[ $bridge =~ \.[[:digit:]]{1,4}$ ]]
+    then
+	tag=$(echo ${bridge} | cut -d "." -f 2)
+	bridge=$(echo ${bridge} | cut -d "." -f 1)
+    else
+	fatal "Could not find bridge device ${bridge}"
+    fi
+fi
+
+RET=0
+ovs-vsctl list-br | grep -c ${bridge} 1>/dev/null 2>&1 || RET=1
+if [ $RET -eq 1 ]
+then
+    fatal "Could not find bridge device ${bridge}"
+fi
+
+log debug "Successful vif-bridge $command for ${vif}, bridge ${bridge}."
+case "$command" in
+    online)
+	ifconfig "${vif}" 0.0.0.0 up
+	if [ -z $tag ]
+	then
+            ovs-vsctl -- --may-exist add-port ${bridge} ${vif}
+	else
+	    ovs-vsctl -- --may-exist add-port ${bridge} ${vif} tag=${tag}
+	fi
+        ;;
+
+    offline)
+	ovs-vsctl -- --if-exists del-port ${bridge} ${vif}
+	ifconfig "$vif" 0.0.0.0 down
+        ;;
+esac
+
+if [ "$command" == "online" ]
+then
+  success
+fi