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/* 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
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