Fix fifo ooo bugs and improve testing

Change-Id: If3c01e318bcb740ca5b240c63f712e2167082a80
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 225b26d..2ac6a9b 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -58,6 +58,7 @@
 } tcp_state_t;
 
 format_function_t format_tcp_state;
+format_function_t format_tcp_flags;
 
 /** TCP timers */
 #define foreach_tcp_timer               \