[ONOS-5732]  NNI Loopback NETCONF command for FUJITSU OLT

Change-Id: I9bf7a767eef59c8133005f6d6b1ddd26cb072d21
diff --git a/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltNniLinkConfig.java b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltNniLinkConfig.java
new file mode 100644
index 0000000..2929c13
--- /dev/null
+++ b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltNniLinkConfig.java
@@ -0,0 +1,43 @@
+/*
+ * 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.drivers.fujitsu.behaviour;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.driver.HandlerBehaviour;
+
+/**
+ * Device behaviour to obtain and set parameters of NNI links in vOLT.
+ */
+@Beta
+public interface VoltNniLinkConfig extends HandlerBehaviour {
+
+    /**
+     * Obtain all ETH NNI links or a specific NNI link in the device.
+     *
+     * @param target input data in string
+     * @return response string
+     */
+    String getNniLinks(String target);
+
+    /**
+     * Set a parameter value of NNI link in the device.
+     *
+     * @param target input data in string
+     * @return true if the operation is successful
+     */
+    boolean setNniLink(String target);
+
+}