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authorJohannes Berg <johannes@sipsolutions.net>2007-07-18 15:47:52 -0700
committerDavid S. Miller <davem@davemloft.net>2007-07-18 15:47:52 -0700
commit2dbba6f773d1e1e4c78f03b0dbf19790d9017693 (patch)
tree19535af46e79a0af756275f751d7b0080b72001d /include/net
parent84659eb529b33572bb3f8c94e0978bd5d084bc7e (diff)
[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>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/genetlink.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index b6eaca122db..decdda54682 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -5,6 +5,22 @@
#include <net/netlink.h>
/**
+ * 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
* @hdrsize: length of user specific header in bytes
@@ -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;