[ONOS-3120] Service Function Forwarder interface.
Change-Id: I8c81a5869e6fdef10e1933fa0327b994b0bd5c7b
diff --git a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/forwarder/ServiceFunctionForwarder.java b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/forwarder/ServiceFunctionForwarder.java
new file mode 100644
index 0000000..e91e6b6
--- /dev/null
+++ b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/forwarder/ServiceFunctionForwarder.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 org.onosproject.sfc.forwarder;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.vtnrsc.PortChain;
+
+/**
+ * Abstraction of an entity which provides Service function forwarder.
+ */
+public interface ServiceFunctionForwarder {
+
+ /**
+ * Install Service function chain.
+ *
+ * @param portChain Port chain
+ */
+ void install(PortChain portChain);
+
+ /**
+ * Programs forwarding object for Service Function.
+ *
+ * @param portChain port chain
+ * @param appid application id
+ * @param type forwarding objective operation type
+ */
+ void programServiceFunctionForwarder(PortChain portChain, ApplicationId appid,
+ Objective.Operation type);
+}