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Commit a7b11d73 authored by Michał Mirosław's avatar Michał Mirosław Committed by David S. Miller
Browse files

genetlink: Introduce genl_register_family_with_ops() 



This introduces genl_register_family_with_ops() that registers a genetlink
family along with operations from a table. This is used to kill copy'n'paste
occurrences in following patches.

Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4ea7e386

include/net/genetlink.h

+2 −0
Original line number Diff line number Diff line
@@ -88,6 +88,8 @@ struct genl_ops 
};



extern int genl_register_family(struct genl_family *family);

extern int genl_register_family_with_ops(struct genl_family *family,

	struct genl_ops *ops, size_t n_ops);

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);

net/netlink/genetlink.c

+46 −0
Original line number Diff line number Diff line
@@ -383,6 +383,52 @@ int genl_register_family(struct genl_family *family) 
	return err;

}



/**

 * genl_register_family_with_ops - register a generic netlink family

 * @family: generic netlink family

 * @ops: operations to be registered

 * @n_ops: number of elements to register

 *

 * Registers the specified family and operations from the specified table.

 * Only one family may be registered with the same family name or identifier.

 *

 * The family id may equal GENL_ID_GENERATE causing an unique id to

 * be automatically generated and assigned.

 *

 * Either a doit or dumpit callback must be specified for every registered

 * operation or the function will fail. Only one operation structure per

 * command identifier may be registered.

 *

 * See include/net/genetlink.h for more documenation on the operations

 * structure.

 *

 * This is equivalent to calling genl_register_family() followed by

 * genl_register_ops() for every operation entry in the table taking

 * care to unregister the family on error path.

 *

 * Return 0 on success or a negative error code.

 */

int genl_register_family_with_ops(struct genl_family *family,

	struct genl_ops *ops, size_t n_ops)

{

	int err, i;



	err = genl_register_family(family);

	if (err)

		return err;



	for (i = 0; i < n_ops; ++i, ++ops) {

		err = genl_register_ops(family, ops);

		if (err)

			goto err_out;

	}

	return 0;

err_out:

	genl_unregister_family(family);

	return err;

}

EXPORT_SYMBOL(genl_register_family_with_ops);



/**

 * genl_unregister_family - unregister generic netlink family

 * @family: generic netlink family