[mirror_iproute2.git] / misc / lnstat.h

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

#include <limits.h>
#include <sys/select.h>

#define PROC_NET_STAT	"/proc/net/stat"

#define LNSTAT_MAX_FILES			32
#define LNSTAT_MAX_FIELDS_PER_LINE		32
#define LNSTAT_MAX_FIELD_NAME_LEN		32

struct lnstat_file;

struct lnstat_field {
	struct lnstat_file *file;
	unsigned int num;			/* field number in line */
	char name[LNSTAT_MAX_FIELD_NAME_LEN+1];
	unsigned long values[2];		/* two buffers for values */
	unsigned long result;
};

struct lnstat_file {
	struct lnstat_file *next;
	char path[PATH_MAX+1];
	char basename[NAME_MAX+1];
	struct timeval last_read;		/* last time of read */
	struct timeval interval;		/* interval */
	int compat;				/* 1 == backwards compat mode */
	FILE *fp;
	unsigned int num_fields;		/* number of fields */
	struct lnstat_field fields[LNSTAT_MAX_FIELDS_PER_LINE];
};


struct lnstat_file *lnstat_scan_dir(const char *path, const int num_req_files,
				    const char **req_files);
int lnstat_update(struct lnstat_file *lnstat_files);
int lnstat_dump(FILE *outfd, struct lnstat_file *lnstat_files);
struct lnstat_field *lnstat_find_field(struct lnstat_file *lnstat_files,
				       const char *name);
#endif /* _LNSTAT_H */
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
4677a549 SH	2	#ifndef _LNSTAT_H
	3	#define _LNSTAT_H
	4
	5	#include <limits.h>
dd9cc0ee	6	#include <sys/select.h>
4677a549	7
4677a549 SH	8	#define PROC_NET_STAT "/proc/net/stat"
	9
	10	#define LNSTAT_MAX_FILES 32
	11	#define LNSTAT_MAX_FIELDS_PER_LINE 32
	12	#define LNSTAT_MAX_FIELD_NAME_LEN 32
	13
	14	struct lnstat_file;
	15
	16	struct lnstat_field {
	17	struct lnstat_file *file;
	18	unsigned int num; /* field number in line */
	19	char name[LNSTAT_MAX_FIELD_NAME_LEN+1];
	20	unsigned long values[2]; /* two buffers for values */
	21	unsigned long result;
	22	};
	23
	24	struct lnstat_file {
	25	struct lnstat_file *next;
	26	char path[PATH_MAX+1];
	27	char basename[NAME_MAX+1];
	28	struct timeval last_read; /* last time of read */
	29	struct timeval interval; /* interval */
	30	int compat; /* 1 == backwards compat mode */
	31	FILE *fp;
	32	unsigned int num_fields; /* number of fields */
	33	struct lnstat_field fields[LNSTAT_MAX_FIELDS_PER_LINE];
	34	};
	35
	36
	37	struct lnstat_file lnstat_scan_dir(const char path, const int num_req_files,
	38	const char **req_files);
	39	int lnstat_update(struct lnstat_file *lnstat_files);
	40	int lnstat_dump(FILE outfd, struct lnstat_file lnstat_files);
	41	struct lnstat_field lnstat_find_field(struct lnstat_file lnstat_files,
	42	const char *name);
	43	#endif /* _LNSTAT_H */