Java-doc improvement

Change-Id: I9737cd0e636d94a829c8c79440654c8fe1b55e36
diff --git a/core/api/src/main/java/org/onosproject/net/tunnel/DefaultLabel.java b/core/api/src/main/java/org/onosproject/net/tunnel/DefaultLabel.java
index 99f8e9b..c164515 100644
--- a/core/api/src/main/java/org/onosproject/net/tunnel/DefaultLabel.java
+++ b/core/api/src/main/java/org/onosproject/net/tunnel/DefaultLabel.java
@@ -26,7 +26,8 @@
      * Creates a label attributed to the specified provider (may be null).
      * if provider is null, which means the label is not managed by the SB.
      *
-     * @param elementId     parent network element
+     * @param providerId  tunnelProvider Id
+     * @param elementId   parent network element
      * @param number      port number
      * @param parentLabel parent port or parent label
      * @param type        port type
diff --git a/core/api/src/main/java/org/onosproject/net/tunnel/TunnelService.java b/core/api/src/main/java/org/onosproject/net/tunnel/TunnelService.java
index 2127a7b..df7eaa6 100644
--- a/core/api/src/main/java/org/onosproject/net/tunnel/TunnelService.java
+++ b/core/api/src/main/java/org/onosproject/net/tunnel/TunnelService.java
@@ -57,14 +57,16 @@
     /**
      * Returns a collection of all known tunnel based on the type.
      *
+     *@param type  tunnelType
      * @return all tunnels for a specific type
      */
     Collection<Tunnel> getTunnels(Tunnel.Type type);
 
     /**
-     * Returns set of all tunnels from the
-     * specified connectpoint.
+     * Returns set of all tunnels from the specified connectpoint.
      *
+     * @param connectPoint device/portnumber
+     * @param type  tunnelType
      * @return set of tunnels
      */
     Collection<Tunnel> getTunnels(ConnectPoint connectPoint, Tunnel.Type type);