Categorized and organized the SemgementRoutingManager.java

Change-Id: I6c1925715aa7f3472d5ddf507dece8228be8ed0c
diff --git a/src/main/java/net/onrc/onos/apps/segmentrouting/GenericIpHandler.java b/src/main/java/net/onrc/onos/apps/segmentrouting/GenericIpHandler.java
index edd2539..5895a8e 100644
--- a/src/main/java/net/onrc/onos/apps/segmentrouting/GenericIpHandler.java
+++ b/src/main/java/net/onrc/onos/apps/segmentrouting/GenericIpHandler.java
@@ -87,7 +87,7 @@
 
         // Check if the destination is within subnets of the swtich
         if (isWithinSubnets(sw, IPv4Address.of(destinationAddress).toString())) {
-            srManager.addPacket(ipv4);
+            srManager.addPacketToPacketBuffer(ipv4);
             srManager.sendArpRequest(sw, destinationAddress, inPort);
         }
     }