1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/tipc.h b/include/uapi/linux/tipc.h
index 5f7b2c4a09ab..ef41c11a7f38 100644
--- a/include/uapi/linux/tipc.h
+++ b/include/uapi/linux/tipc.h
@@ -238,6 +238,7 @@ struct sockaddr_tipc {
  * Flag values
  */
 #define TIPC_GROUP_LOOPBACK     0x1  /* Receive copy of sent msg when match */
+#define TIPC_GROUP_MEMBER_EVTS  0x2  /* Receive membership events in socket */
 
 struct tipc_group_req {
         __u32 type;      /* group id */