some interface changes to flow and packet
diff --git a/core/api/src/main/java/org/onlab/onos/net/packet/PacketService.java b/core/api/src/main/java/org/onlab/onos/net/packet/PacketService.java
index 5debf1b..d2db536 100644
--- a/core/api/src/main/java/org/onlab/onos/net/packet/PacketService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/packet/PacketService.java
@@ -18,7 +18,7 @@
      * @throws java.lang.IllegalArgumentException if a processor with the
      *                                            given priority already exists
      */
-    void addProcessor(PacketProcessor processor, long priority);
+    void addProcessor(PacketProcessor processor, int priority);
 
     /**
      * Removes the specified processor from the processing pipeline.