1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _RDS_INFO_H
 3#define _RDS_INFO_H
 4
 5struct rds_info_lengths {
 6	unsigned int	nr;
 7	unsigned int	each;
 8};
 9
10struct rds_info_iterator;
11
12/*
13 * These functions must fill in the fields of @lens to reflect the size
14 * of the available info source.  If the snapshot fits in @len then it
15 * should be copied using @iter.  The caller will deduce if it was copied
16 * or not by comparing the lengths.
17 */
18typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
19			      struct rds_info_iterator *iter,
20			      struct rds_info_lengths *lens);
21
22void rds_info_register_func(int optname, rds_info_func func);
23void rds_info_deregister_func(int optname, rds_info_func func);
24int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
25			int __user *optlen);
26void rds_info_copy(struct rds_info_iterator *iter, void *data,
27		   unsigned long bytes);
28void rds_info_iter_unmap(struct rds_info_iterator *iter);
29
30
31#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _RDS_INFO_H
 3#define _RDS_INFO_H
 4
 5struct rds_info_lengths {
 6	unsigned int	nr;
 7	unsigned int	each;
 8};
 9
10struct rds_info_iterator;
11
12/*
13 * These functions must fill in the fields of @lens to reflect the size
14 * of the available info source.  If the snapshot fits in @len then it
15 * should be copied using @iter.  The caller will deduce if it was copied
16 * or not by comparing the lengths.
17 */
18typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
19			      struct rds_info_iterator *iter,
20			      struct rds_info_lengths *lens);
21
22void rds_info_register_func(int optname, rds_info_func func);
23void rds_info_deregister_func(int optname, rds_info_func func);
24int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
25			int __user *optlen);
26void rds_info_copy(struct rds_info_iterator *iter, void *data,
27		   unsigned long bytes);
28void rds_info_iter_unmap(struct rds_info_iterator *iter);
29
30
31#endif