[GEANT] Command device-interfaces added.
Change-Id: If70eedc5e8e0d83bc4d31c556fbf8382cbe97cec
diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceInterfaceDescription.java b/core/api/src/main/java/org/onosproject/net/device/DeviceInterfaceDescription.java
new file mode 100644
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+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceInterfaceDescription.java
@@ -0,0 +1,81 @@
+/*
+ * 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.net.device;
+
+import org.onlab.packet.VlanId;
+
+import java.util.List;
+
+/**
+ * The description of an interface used for legacy devices.
+ */
+public interface DeviceInterfaceDescription {
+ /**
+ * Represents the type of operation of the interface.
+ */
+ enum Mode {
+ /**
+ * Normal mode of interface operation.
+ */
+ NORMAL,
+ /**
+ * Access mode to a VLAN for interface.
+ */
+ ACCESS,
+ /**
+ * Trunk mode for a set of VLANs for interface.
+ */
+ TRUNK
+ }
+
+ /**
+ * Returns the name of the interface.
+ *
+ * @return name of the interface
+ */
+ String name();
+
+ /**
+ * Returns the operation mode of the interface.
+ *
+ * @return operation mode of the interface
+ */
+ Mode mode();
+
+ /**
+ * Returns the VLAN-IDs configured for the interface. No VLAN-ID should be
+ * returned for NORMAL mode, 1 VLAN-ID for access mode and 1 or more
+ * VLAN-IDs for trunking mode.
+ *
+ * @return VLAN-ID(s) configured for the interface.
+ */
+ List<VlanId> vlans();
+
+ /**
+ * Indicates whether a rate limit has been set on the interface.
+ *
+ * @return indication whether interface is rate limited or not
+ */
+ boolean isRateLimited();
+
+ /**
+ * Returns the rate limit set on the interface bandwidth.
+ *
+ * @return the rate limit set on the interface bandwidth
+ */
+ short rateLimit();
+}