[CORD-545] Adds QoS Index support in ONOS core

Change-Id: If7649bdf70f5a796466b8efc5798dc3346ea94a0
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3SetQosIndex.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3SetQosIndex.java
new file mode 100644
index 0000000..a6a62d6
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3SetQosIndex.java
@@ -0,0 +1,103 @@
+/*
+ * 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;
+
+import java.util.Objects;
+
+/**
+ * OFDPA set Qos Index extension instruction.
+ */
+public class Ofdpa3SetQosIndex extends AbstractExtension implements ExtensionTreatment {
+    /**
+     * Byte storing the Qos index.
+     */
+    private int qosIndex;
+
+    private static final KryoNamespace APPKRYO = new KryoNamespace.Builder()
+            .build();
+
+    /**
+     * Constructs a new set Qos index instruction.
+     */
+    protected Ofdpa3SetQosIndex() {
+        qosIndex = 0x00;
+    }
+
+    /**
+     * Constructs a new set Qos index instruction with a given int.
+     *
+     * @param qosindex Qos index as integer
+     */
+    public Ofdpa3SetQosIndex(int qosindex) {
+        qosIndex = qosindex;
+    }
+
+    /**
+     * Gets the Qos index as int.
+     *
+     * @return the Qos index as int.
+     */
+    public int qosIndex() {
+        return qosIndex;
+    }
+
+    @Override
+    public ExtensionTreatmentType type() {
+        return ExtensionTreatmentType.ExtensionTreatmentTypes.OFDPA_SET_QOS_INDEX.type();
+    }
+
+    @Override
+    public void deserialize(byte[] data) {
+        qosIndex = APPKRYO.deserialize(data);
+    }
+
+    @Override
+    public byte[] serialize() {
+        return APPKRYO.serialize(qosIndex);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(qosIndex);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof Ofdpa3SetQosIndex) {
+            Ofdpa3SetQosIndex that = (Ofdpa3SetQosIndex) obj;
+            return Objects.equals(qosIndex, that.qosIndex);
+
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("qosIndex", qosIndex)
+                .toString();
+    }
+}
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