X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=lib%2Fnetlink-protocol.h;h=521c5bffd0dd586bc619a7b1545a5204049351eb;hb=9c8e276ec3f4a3368ec1cb7f713543d46d8ad23a;hp=1b5fa715389f62002f47d38bc375bcb5113d4866;hpb=cceb11f5b12d09cc8afc87ca4fd03e941234d439;p=openvswitch

diff --git a/lib/netlink-protocol.h b/lib/netlink-protocol.h
index 1b5fa715..521c5bff 100644
--- a/lib/netlink-protocol.h
+++ b/lib/netlink-protocol.h
@@ -36,6 +36,7 @@
 #ifdef HAVE_NETLINK
 #include <linux/netlink.h>
 #include <linux/genetlink.h>
+
 #else
 #define NETLINK_GENERIC         16
 
@@ -160,4 +161,22 @@ enum {
 #define NETLINK_DROP_MEMBERSHIP 2
 #endif
 
+/* These were introduced all together in 2.6.23.  (We want our programs to
+ * support the newer kernel features even if compiled with older headers.) */
+#ifndef CTRL_ATTR_MCAST_GRP_MAX
+
+#undef CTRL_ATTR_MAX
+#define CTRL_ATTR_MAX 7
+#define CTRL_ATTR_MCAST_GROUPS 7
+
+enum {
+	CTRL_ATTR_MCAST_GRP_UNSPEC,
+	CTRL_ATTR_MCAST_GRP_NAME,
+	CTRL_ATTR_MCAST_GRP_ID,
+	__CTRL_ATTR_MCAST_GRP_MAX,
+};
+
+#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
+#endif /* CTRL_ATTR_MCAST_GRP_MAX */
+
 #endif /* netlink-protocol.h */