1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _RDS_INFO_H 2 #ifndef _RDS_INFO_H
3 #define _RDS_INFO_H 3 #define _RDS_INFO_H
4 4
5 struct rds_info_lengths { 5 struct rds_info_lengths {
6 unsigned int nr; 6 unsigned int nr;
7 unsigned int each; 7 unsigned int each;
8 }; 8 };
9 9
10 struct rds_info_iterator; 10 struct rds_info_iterator;
11 11
12 /* 12 /*
13 * These functions must fill in the fields of 13 * These functions must fill in the fields of @lens to reflect the size
14 * of the available info source. If the snaps 14 * of the available info source. If the snapshot fits in @len then it
15 * should be copied using @iter. The caller w 15 * should be copied using @iter. The caller will deduce if it was copied
16 * or not by comparing the lengths. 16 * or not by comparing the lengths.
17 */ 17 */
18 typedef void (*rds_info_func)(struct socket *s 18 typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
19 struct rds_info_ 19 struct rds_info_iterator *iter,
20 struct rds_info_ 20 struct rds_info_lengths *lens);
21 21
22 void rds_info_register_func(int optname, rds_i 22 void rds_info_register_func(int optname, rds_info_func func);
23 void rds_info_deregister_func(int optname, rds 23 void rds_info_deregister_func(int optname, rds_info_func func);
24 int rds_info_getsockopt(struct socket *sock, i 24 int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
25 int __user *optlen); 25 int __user *optlen);
26 void rds_info_copy(struct rds_info_iterator *i 26 void rds_info_copy(struct rds_info_iterator *iter, void *data,
27 unsigned long bytes); 27 unsigned long bytes);
28 void rds_info_iter_unmap(struct rds_info_itera 28 void rds_info_iter_unmap(struct rds_info_iterator *iter);
29 29
30 30
31 #endif 31 #endif
32 32
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