netlink-socket: Add functions for joining and leaving multicast groups.

[sliver-openvswitch.git] / lib / netlink-protocol.h

diff --git a/lib/netlink-protocol.h b/lib/netlink-protocol.h
index 6281fb2..1b5fa71 100644 (file)
--- a/lib/netlink-protocol.h
+++ b/lib/netlink-protocol.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -86,10 +86,6 @@ struct nlmsgerr
 };
 BUILD_ASSERT_DECL(sizeof(struct nlmsgerr) == 20);
 
-#define NETLINK_ADD_MEMBERSHIP  1
-#define NETLINK_DROP_MEMBERSHIP 2
-#define NETLINK_PKTINFO         3
-
 struct genlmsghdr {
     uint8_t cmd;
     uint8_t version;
@@ -157,4 +153,11 @@ enum {
 #define NLA_TYPE_MASK          ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
 #endif
 
+/* These were introduced all together in 2.6.14.  (We want our programs to
+ * support the newer kernel features even if compiled with older headers.) */
+#ifndef NETLINK_ADD_MEMBERSHIP
+#define NETLINK_ADD_MEMBERSHIP 1
+#define NETLINK_DROP_MEMBERSHIP 2
+#endif
+
 #endif /* netlink-protocol.h */