1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index 660b5010c2d9..228eb4eb3129 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -17,6 +17,9 @@
 #define GRE_FLAGS       __constant_htons(0x00F8)
 #define GRE_VERSION     __constant_htons(0x0007)
 
+/* i_flags values for SIT mode */
+#define SIT_ISATAP      0x0001
+
 struct ip_tunnel_parm
 {
         char                    name[IFNAMSIZ];