[mirror_iproute2.git] / tc / m_ematch.h

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

#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>

#include "utils.h"
#include "tc_util.h"

#define EMATCHKINDSIZ 16

struct bstr {
	char	*data;
	unsigned int	len;
	int		quoted;
	struct bstr	*next;
};

struct bstr *bstr_alloc(const char *text);

static inline struct bstr *bstr_new(char *data, unsigned int len)
{
	struct bstr *b = calloc(1, sizeof(*b));

	if (b == NULL)
		return NULL;

	b->data = data;
	b->len = len;

	return b;
}

static inline int bstrcmp(const struct bstr *b, const char *text)
{
	int len = strlen(text);
	int d = b->len - len;

	if (d == 0)
		return strncmp(b->data, text, len);

	return d;
}

static inline struct bstr *bstr_next(struct bstr *b)
{
	return b->next;
}

unsigned long bstrtoul(const struct bstr *b);

struct ematch {
	struct bstr	*args;
	int		index;
	int		inverted;
	int		relation;
	int		child_ref;
	struct ematch	*child;
	struct ematch	*next;
};

static inline struct ematch *new_ematch(struct bstr *args, int inverted)
{
	struct ematch *e = calloc(1, sizeof(*e));

	if (e == NULL)
		return NULL;

	e->args = args;
	e->inverted = inverted;

	return e;
}

void print_ematch_tree(const struct ematch *tree);

struct ematch_util {
	char			kind[EMATCHKINDSIZ];
	int			kind_num;
	int	(*parse_eopt)(struct nlmsghdr *, struct tcf_ematch_hdr *,
			      struct bstr *);
	int	(*parse_eopt_argv)(struct nlmsghdr *, struct tcf_ematch_hdr *,
				   int, char **);
	int	(*print_eopt)(FILE *, struct tcf_ematch_hdr *, void *, int);
	void	(*print_usage)(FILE *);
	struct ematch_util	*next;
};

static inline int parse_layer(const struct bstr *b)
{
	if (*((char *) b->data) == 'l')
		return TCF_LAYER_LINK;
	else if (*((char *) b->data) == 'n')
		return TCF_LAYER_NETWORK;
	else if (*((char *) b->data) == 't')
		return TCF_LAYER_TRANSPORT;
	else
		return INT_MAX;
}

__attribute__((format(printf, 5, 6)))
int em_parse_error(int err, struct bstr *args, struct bstr *carg,
		   struct ematch_util *, char *fmt, ...);
int print_ematch(FILE *, const struct rtattr *);
int parse_ematch(int *, char ***, int, struct nlmsghdr *);

#endif
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
6a805a65 SH	2	#ifndef __TC_EMATCH_H_
	3	#define __TC_EMATCH_H_
	4
	5	#include <ctype.h>
737f15f6 SH	6	#include <stdlib.h>
737f15f6 SH	7	#include <string.h>
5bd9dd49	8	#include <limits.h>
6a805a65 SH	9
	10	#include "utils.h"
	11	#include "tc_util.h"
	12
	13	#define EMATCHKINDSIZ 16
	14
a8e9f4ae	15	struct bstr {
f332d169	16	char *data;
6a805a65 SH	17	unsigned int len;
	18	int quoted;
	19	struct bstr *next;
	20	};
	21
a8e9f4ae	22	struct bstr bstr_alloc(const char text);
6a805a65	23
a8e9f4ae	24	static inline struct bstr bstr_new(char data, unsigned int len)
6a805a65 SH	25	{
	26	struct bstr b = calloc(1, sizeof(b));
	27
	28	if (b == NULL)
	29	return NULL;
	30
	31	b->data = data;
	32	b->len = len;
	33
	34	return b;
	35	}
	36
a8e9f4ae	37	static inline int bstrcmp(const struct bstr b, const char text)
6a805a65 SH	38	{
	39	int len = strlen(text);
	40	int d = b->len - len;
	41
	42	if (d == 0)
f332d169	43	return strncmp(b->data, text, len);
6a805a65 SH	44
	45	return d;
	46	}
	47
6a805a65 SH	48	static inline struct bstr bstr_next(struct bstr b)
	49	{
	50	return b->next;
	51	}
	52
a8e9f4ae	53	unsigned long bstrtoul(const struct bstr *b);
b6da1afc	54
a8e9f4ae	55	struct ematch {
6a805a65 SH	56	struct bstr *args;
	57	int index;
	58	int inverted;
	59	int relation;
	60	int child_ref;
	61	struct ematch *child;
	62	struct ematch *next;
	63	};
	64
a8e9f4ae	65	static inline struct ematch new_ematch(struct bstr args, int inverted)
6a805a65 SH	66	{
	67	struct ematch e = calloc(1, sizeof(e));
	68
	69	if (e == NULL)
	70	return NULL;
	71
	72	e->args = args;
	73	e->inverted = inverted;
	74
	75	return e;
	76	}
	77
a8e9f4ae	78	void print_ematch_tree(const struct ematch *tree);
b6da1afc	79
a8e9f4ae	80	struct ematch_util {
6a805a65 SH	81	char kind[EMATCHKINDSIZ];
6a805a65 SH	82	int kind_num;
a8e9f4ae	83	int (parse_eopt)(struct nlmsghdr , struct tcf_ematch_hdr *,
6a805a65	84	struct bstr *);
52686203 EB	85	int (parse_eopt_argv)(struct nlmsghdr , struct tcf_ematch_hdr *,
52686203 EB	86	int, char **);
6a805a65 SH	87	int (print_eopt)(FILE , struct tcf_ematch_hdr , void , int);
	88	void (print_usage)(FILE );
	89	struct ematch_util *next;
	90	};
	91
a8e9f4ae	92	static inline int parse_layer(const struct bstr *b)
6a805a65 SH	93	{
	94	if (((char ) b->data) == 'l')
	95	return TCF_LAYER_LINK;
	96	else if (((char ) b->data) == 'n')
	97	return TCF_LAYER_NETWORK;
	98	else if (((char ) b->data) == 't')
	99	return TCF_LAYER_TRANSPORT;
	100	else
	101	return INT_MAX;
	102	}
	103
5d5586b0	104	__attribute__((format(printf, 5, 6)))
a8e9f4ae	105	int em_parse_error(int err, struct bstr args, struct bstr carg,
6a805a65	106	struct ematch_util , char fmt, ...);
a8e9f4ae SH	107	int print_ematch(FILE , const struct rtattr );
a8e9f4ae SH	108	int parse_ematch(int , char *, int, struct nlmsghdr );
6a805a65 SH	109
6a805a65 SH	110	#endif