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mirror of https://gitlab.nic.cz/labs/bird.git synced 2024-12-22 17:51:53 +00:00
bird/filter/filter.h
Maria Matejka 731593685b Merge commit 'd85fa48e' into thread-next
The resource dumping routines needed to be updated in v3 to use the new
API introduced in v2.

Conflicts:
	filter/f-util.c
	filter/filter.c
	lib/birdlib.h
	lib/event.c
	lib/mempool.c
	lib/resource.c
	lib/resource.h
	lib/slab.c
	lib/timer.c
	nest/config.Y
	nest/iface.c
	nest/iface.h
	nest/locks.c
	nest/neighbor.c
	nest/proto.c
	nest/route.h
	nest/rt-attr.c
	nest/rt-table.c
	proto/bfd/bfd.c
	proto/bmp/bmp.c
	sysdep/unix/io.c
	sysdep/unix/krt.c
	sysdep/unix/main.c
	sysdep/unix/unix.h
2024-12-13 15:58:10 +01:00

85 lines
2.3 KiB
C

/*
* BIRD Internet Routing Daemon -- Filters
*
* (c) 1999 Pavel Machek <pavel@ucw.cz>
* (c) 2018--2019 Maria Matejka <mq@jmq.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_FILT_H_
#define _BIRD_FILT_H_
#include "lib/resource.h"
#include "lib/ip.h"
#include "lib/macro.h"
#include "nest/route.h"
#include "lib/attrs.h"
#include "filter/data.h"
#include "conf/conf.h"
/* Possible return values of filter execution */
enum filter_return {
F_NOP = 0,
F_NONL,
F_RETURN,
F_ACCEPT, /* Need to preserve ordering: accepts < rejects! */
F_REJECT,
F_ERROR,
};
static inline const char *filter_return_str(const enum filter_return fret) {
switch (fret) {
#define FRS(x) case x: return #x
FRS(F_NOP);
FRS(F_NONL);
FRS(F_RETURN);
FRS(F_ACCEPT);
FRS(F_REJECT);
FRS(F_ERROR);
#undef FRS
default: bug("This shall not happen");
}
}
/* The filter encapsulating structure to be pointed-to from outside */
struct f_inst;
struct f_line;
struct filter {
struct symbol *sym;
const struct f_line *root;
};
struct rte;
enum filter_return f_run(const struct filter *filter, struct rte *rte, int flags);
enum filter_return f_run_args(const struct filter *filter, struct rte *rte, uint argc, const struct f_val *argv, int flags);
enum filter_return f_eval_rte(const struct f_line *expr, struct rte *rte, uint argc, const struct f_val *argv, uint resc, struct f_val *resv);
enum filter_return f_eval_buf(const struct f_line *expr, buffer *buf);
struct f_val cf_eval_tmp(const struct f_inst *inst, int type);
static inline struct f_val *cf_eval(const struct f_inst *inst, int type)
{
struct f_val val = cf_eval_tmp(inst, type);
return lp_val_copy(cfg_mem, &val);
}
static inline uint cf_eval_int(const struct f_inst *inst) { return cf_eval_tmp(inst, T_INT).val.i; };
const char *filter_name(const struct filter *filter);
int filter_same(const struct filter *new, const struct filter *old);
int f_same(const struct f_line *f1, const struct f_line *f2);
void filter_preconfig(struct config *new);
void filter_commit(struct config *new, struct config *old);
void filters_dump_all(struct dump_request *);
#define FILTER_ACCEPT NULL
#define FILTER_REJECT ((struct filter *) 1)
#define FILTER_UNDEF ((struct filter *) 2) /* Used in BGP */
#define FF_SILENT 2 /* Silent filter execution */
#endif