Import Floodlight v0.90
diff --git a/src/ext/floodlight/src/main/java/net/floodlightcontroller/core/IOFMessageListener.java b/src/ext/floodlight/src/main/java/net/floodlightcontroller/core/IOFMessageListener.java
new file mode 100644
index 0000000..00fdac1
--- /dev/null
+++ b/src/ext/floodlight/src/main/java/net/floodlightcontroller/core/IOFMessageListener.java
@@ -0,0 +1,38 @@
+/**
+* Copyright 2011, Big Switch Networks, Inc.
+* Originally created by David Erickson, Stanford University
+*
+* Licensed under the Apache License, Version 2.0 (the "License"); you may
+* not use this file except in compliance with the License. You may obtain
+* a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+* License for the specific language governing permissions and limitations
+* under the License.
+**/
+
+package net.floodlightcontroller.core;
+
+import org.openflow.protocol.OFMessage;
+import org.openflow.protocol.OFType;
+
+/**
+ *
+ *
+ * @author David Erickson (daviderickson@cs.stanford.edu)
+ */
+public interface IOFMessageListener extends IListener<OFType> {
+ /**
+ * This is the method Floodlight uses to call listeners with OpenFlow messages
+ * @param sw the OpenFlow switch that sent this message
+ * @param msg the message
+ * @param cntx a Floodlight message context object you can use to pass
+ * information between listeners
+ * @return the command to continue or stop the execution
+ */
+ public Command receive(IOFSwitch sw, OFMessage msg, FloodlightContext cntx);
+}