[linux.git] / net / rds / info.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_INFO_H
#define _RDS_INFO_H

struct rds_info_lengths {
	unsigned int	nr;
	unsigned int	each;
};

struct rds_info_iterator;

/*
 * These functions must fill in the fields of @lens to reflect the size
 * of the available info source.  If the snapshot fits in @len then it
 * should be copied using @iter.  The caller will deduce if it was copied
 * or not by comparing the lengths.
 */
typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
			      struct rds_info_iterator *iter,
			      struct rds_info_lengths *lens);

void rds_info_register_func(int optname, rds_info_func func);
void rds_info_deregister_func(int optname, rds_info_func func);
int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
			int __user *optlen);
void rds_info_copy(struct rds_info_iterator *iter, void *data,
		   unsigned long bytes);
void rds_info_iter_unmap(struct rds_info_iterator *iter);


#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
a8c879a7 AG	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