* Added new method LinkStorageImpl.getReverseLinks() to get the list
  of all reverse links connected to a switch.

* Added new method INetMapTopologyObjects.getReverseLinkedPorts()
  that is needed by the above implementation.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/ILinkStorage.java b/src/main/java/net/onrc/onos/ofcontroller/core/ILinkStorage.java
index 483fbda..c8312d4 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/ILinkStorage.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/ILinkStorage.java
@@ -43,7 +43,17 @@
 	 *  If only dpid is set all links associated with Switch are retrieved
 	 */
 	public List<Link> getLinks(Long dpid, short port);
+
 	public List<Link> getLinks(String dpid);
+
+	/**
+	 * Get list of all reverse links connected to the switch specified by
+	 * given DPID.
+	 * @param dpid DPID of desired switch.
+	 * @return List of reverse links. Empty list if no port was found.
+	 */
+	public List<Link> getReverseLinks(String dpid);
+
 	public List<Link> getActiveLinks();
 
 	public LinkInfo getLinkInfo(Link link);