[ONOS-4718] Add skeleton code for de-serializing LISP ctrl messages

Change-Id: I52f7905538e5832e5282812df869b8158ce23334
diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispMessageReader.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispMessageReader.java
new file mode 100644
index 0000000..b11dc3f
--- /dev/null
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispMessageReader.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2016-present 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.lisp.msg.protocols;
+
+import io.netty.buffer.ByteBuf;
+import org.onosproject.lisp.msg.exceptions.LispParseError;
+
+/**
+ * An interface for de-serializing LISP control message.
+ */
+public interface LispMessageReader<T> {
+
+    /**
+     * Reads from byte buffer and de-serialize the LISP control message.
+     *
+     * @param byteBuf byte buffer
+     * @return LISP message instance
+     * @throws LispParseError LISP control message parse error
+     */
+    T readFrom(ByteBuf byteBuf) throws LispParseError;
+}