--- openflow-2012-07-02-3.h	2015-07-23 09:54:17.416479373 -0700
+++ openflow-2013-01-10-2.h	2015-07-23 09:54:17.420479373 -0700
@@ -2839,7 +2839,8 @@
 
 /* What changed about the table */
 enum ofp_table_reason {
-    OFPTR_VACANCY  = 3,        /* Vacancy threshold event. */
+    OFPTR_VACANCY_DOWN  = 3,        /* Vacancy down threshold event. */
+    OFPTR_VACANCY_UP    = 4,        /* Vacancy up threshold event. */
 };
 
 /* A table config has changed in the datapath */