[GENETLINK]: Dynamic multicast groups.

Introduce API to dynamically register and unregister multicast groups.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/linux/genetlink.h b/include/linux/genetlink.h
index f7a93770e1be..7da02c93002b 100644
--- a/include/linux/genetlink.h
+++ b/include/linux/genetlink.h
@@ -39,6 +39,9 @@ enum {
         CTRL_CMD_NEWOPS,
         CTRL_CMD_DELOPS,
         CTRL_CMD_GETOPS,
+        CTRL_CMD_NEWMCAST_GRP,
+        CTRL_CMD_DELMCAST_GRP,
+        CTRL_CMD_GETMCAST_GRP, /* unused */
         __CTRL_CMD_MAX,
 };
 
@@ -52,6 +55,7 @@ enum {
         CTRL_ATTR_HDRSIZE,
         CTRL_ATTR_MAXATTR,
         CTRL_ATTR_OPS,
+        CTRL_ATTR_MCAST_GROUPS,
         __CTRL_ATTR_MAX,
 };
 
@@ -66,4 +70,13 @@ enum {
 
 #define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
 
+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  /* __LINUX_GENERIC_NETLINK_H */