Update IRoutingService javadoc

src/main/java/net/floodlightcontroller/routing/IRoutingService.java

@@ -24,17 +24,47 @@ import net.floodlightcontroller.routing.Route;
 
 public interface IRoutingService extends IFloodlightService {
 
-    /** Provides a route between src and dst that allows tunnels. */
+    /**
+     * Provides a route between src and dst that allows tunnels. The cookie is provisioned
+     * for callers of getRoute to provide additional information to influence the route
+     * to be returned, if the underlying routing implementation supports choice among
+     * multiple routes.
+     * @param src Source switch DPID.
+     * @param dst Destination switch DPID.
+     * @param cookie cookie (usage determined by implementation; ignored by topology instance now).
+     */
     public Route getRoute(long src, long dst, long cookie);
 
-    /** Provides a route between src and dst, with option to allow or 
-     *  not allow tunnels in the path.*/
+    /** 
+     * Provides a route between src and dst, with option to allow or 
+     *  not allow tunnels in the path.
+     * @param src Source switch DPID.
+     * @param dst Destination switch DPID.
+     * @param cookie cookie (usage determined by implementation; ignored by topology instance now).
+     * @param tunnelEnabled boolean option.
+     */
     public Route getRoute(long src, long dst, long cookie, boolean tunnelEnabled);
 
-
+    /** 
+     * Provides a route between srcPort on src and dstPort on dst.
+     * @param src Source switch DPID.
+     * @param srcPort Source port on source switch.
+     * @param dst Destination switch DPID.
+     * @param dstPort dstPort on Destination switch.
+     * @param cookie cookie (usage determined by implementation; ignored by topology instance now).
+     */
     public Route getRoute(long srcId, short srcPort, 
                              long dstId, short dstPort, long cookie);
 
+    /** 
+     * Provides a route between srcPort on src and dstPort on dst.
+     * @param src Source switch DPID.
+     * @param srcPort Source port on source switch.
+     * @param dst Destination switch DPID.
+     * @param dstPort dstPort on Destination switch.
+     * @param cookie cookie (usage determined by implementation; ignored by topology instance now).
+     * @param tunnelEnabled boolean option.
+     */
     public Route getRoute(long srcId, short srcPort, 
                              long dstId, short dstPort, long cookie,
                              boolean tunnelEnabled);