Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[linux-2.6-microblaze.git] / net / rds / info.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _RDS_INFO_H
3 #define _RDS_INFO_H
4
5 struct rds_info_lengths {
6         unsigned int    nr;
7         unsigned int    each;
8 };
9
10 struct 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  */
18 typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
19                               struct rds_info_iterator *iter,
20                               struct rds_info_lengths *lens);
21
22 void rds_info_register_func(int optname, rds_info_func func);
23 void rds_info_deregister_func(int optname, rds_info_func func);
24 int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
25                         int __user *optlen);
26 void rds_info_copy(struct rds_info_iterator *iter, void *data,
27                    unsigned long bytes);
28 void rds_info_iter_unmap(struct rds_info_iterator *iter);
29
30
31 #endif