udp: refactor udp code

Change-Id: I44d5c9df7c49b8d4d5677c6d319033b2da3e6b80
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet.am b/src/vnet.am
index 520bee4..97964c5 100644
--- a/src/vnet.am
+++ b/src/vnet.am
@@ -877,7 +877,7 @@
   vnet/session/session_table.c			\
   vnet/session/session_lookup.c			\
   vnet/session/session_node.c			\
-  vnet/session/transport_interface.c		\
+  vnet/session/transport.c			\
   vnet/session/application.c			\
   vnet/session/session_cli.c			\
   vnet/session/application_interface.c		\