From 2dbba6f773d1e1e4c78f03b0dbf19790d9017693 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 18 Jul 2007 15:47:52 -0700 Subject: [GENETLINK]: Dynamic multicast groups. Introduce API to dynamically register and unregister multicast groups. Signed-off-by: Johannes Berg Acked-by: Patrick McHardy Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- include/net/genetlink.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/net') diff --git a/include/net/genetlink.h b/include/net/genetlink.h index b6eaca122db8..decdda546829 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -4,6 +4,22 @@ #include #include +/** + * struct genl_multicast_group - generic netlink multicast group + * @name: name of the multicast group, names are per-family + * @id: multicast group ID, assigned by the core, to use with + * genlmsg_multicast(). + * @list: list entry for linking + * @family: pointer to family, need not be set before registering + */ +struct genl_multicast_group +{ + struct genl_family *family; /* private */ + struct list_head list; /* private */ + char name[GENL_NAMSIZ]; + u32 id; +}; + /** * struct genl_family - generic netlink family * @id: protocol family idenfitier @@ -14,6 +30,7 @@ * @attrbuf: buffer to store parsed attributes * @ops_list: list of all assigned operations * @family_list: family list + * @mcast_groups: multicast groups list */ struct genl_family { @@ -25,6 +42,7 @@ struct genl_family struct nlattr ** attrbuf; /* private */ struct list_head ops_list; /* private */ struct list_head family_list; /* private */ + struct list_head mcast_groups; /* private */ }; /** @@ -73,6 +91,10 @@ extern int genl_register_family(struct genl_family *family); extern int genl_unregister_family(struct genl_family *family); extern int genl_register_ops(struct genl_family *, struct genl_ops *ops); extern int genl_unregister_ops(struct genl_family *, struct genl_ops *ops); +extern int genl_register_mc_group(struct genl_family *family, + struct genl_multicast_group *grp); +extern void genl_unregister_mc_group(struct genl_family *family, + struct genl_multicast_group *grp); extern struct sock *genl_sock; -- cgit v1.2.3