[CORD-545] Adds ofdpa actions in ONOS core

Change-Id: I98edc27162d7309b9d21f2c939430608e3e85c6e
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3PushL2Header.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3PushL2Header.java
new file mode 100644
index 0000000..ac09a82
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3PushL2Header.java
@@ -0,0 +1,74 @@
+/*
+ * 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.driver.extensions;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.net.flow.AbstractExtension;
+import org.onosproject.net.flow.instructions.ExtensionTreatment;
+import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
+
+/**
+ * Ofdpa push l2 header extension instruction.
+ */
+public class Ofdpa3PushL2Header extends AbstractExtension implements ExtensionTreatment {
+
+    private static final KryoNamespace APPKRYO = new KryoNamespace.Builder().build();
+
+    /**
+     * Creates a new push l2 header instruction.
+     */
+    public Ofdpa3PushL2Header() {
+
+    }
+
+    @Override
+    public ExtensionTreatmentType type() {
+        return ExtensionTreatmentType.ExtensionTreatmentTypes.OFDPA_PUSH_L2_HEADER.type();
+    }
+
+    @Override
+    public void deserialize(byte[] data) {
+    }
+
+    @Override
+    public byte[] serialize() {
+        return APPKRYO.serialize(true);
+    }
+
+    @Override
+    public int hashCode() {
+        return 1;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof Ofdpa3PushL2Header) {
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .toString();
+    }
+}