IPSEC: header exports

Change-Id: I7d48a4e236c6e7b11b0c9750a30fb68e829d64a5
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/ipsec/ipsec_spd.c b/src/vnet/ipsec/ipsec_spd.c
index 19525b2..45a379d 100644
--- a/src/vnet/ipsec/ipsec_spd.c
+++ b/src/vnet/ipsec/ipsec_spd.c
@@ -14,6 +14,7 @@
  */
 
 #include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/ipsec_io.h>
 
 int
 ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add)