1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* BIRD Internet Routing Daemon -- Filter instructions
*
* (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_F_INST_H_
#define _BIRD_F_INST_H_
#include "nest/bird.h"
#include "conf/conf.h"
#include "filter/filter.h"
#include "filter/data.h"
/* Include generated filter instruction declarations */
#include "filter/f-inst-decl.h"
#define f_new_inst(...) MACRO_CONCAT_AFTER(f_new_inst_, MACRO_FIRST(__VA_ARGS__))(__VA_ARGS__)
/* Convert the instruction back to the enum name */
const char *f_instruction_name(enum f_instruction_code fi);
struct f_inst *f_clear_local_vars(struct f_inst *decls);
/* Flags for instructions */
enum f_instruction_flags {
FIF_PRINTED = 1, /* FI_PRINT_AND_DIE: message put in buffer */
};
/* Filter structures for execution */
struct f_line;
/* The single instruction item */
struct f_line_item {
enum f_instruction_code fi_code; /* What to do */
enum f_instruction_flags flags; /* Flags, instruction-specific */
uint lineno; /* Where */
union {
struct {
const struct f_val *vp;
const struct symbol *sym;
};
struct f_val val;
const struct f_line *lines[2];
enum filter_return fret;
struct f_static_attr sa;
struct f_dynamic_attr da;
enum ec_subtype ecs;
const char *s;
const struct f_tree *tree;
const struct rtable_config *rtc;
uint count;
}; /* Additional instruction data */
};
/* Line of instructions to be unconditionally executed one after another */
struct f_line {
uint len; /* Line length */
struct f_line_item items[0]; /* The items themselves */
};
/* Convert the f_inst infix tree to the f_line structures */
struct f_line *f_postfixify_concat(const struct f_inst * const inst[], uint count);
static inline struct f_line *f_postfixify(const struct f_inst *root)
{ return f_postfixify_concat(&root, 1); }
struct filter *f_new_where(const struct f_inst *);
static inline struct f_dynamic_attr f_new_dynamic_attr(u8 type, u8 bit, enum f_type f_type, uint code) /* Type as core knows it, type as filters know it, and code of dynamic attribute */
{ return (struct f_dynamic_attr) { .type = type, .bit = bit, .f_type = f_type, .ea_code = code }; } /* f_type currently unused; will be handy for static type checking */
static inline struct f_static_attr f_new_static_attr(int f_type, int code, int readonly)
{ return (struct f_static_attr) { .f_type = f_type, .sa_code = code, .readonly = readonly }; }
struct f_inst *f_generate_complex(enum f_instruction_code fi_code, struct f_dynamic_attr da, struct f_inst *argument);
struct f_inst *f_generate_roa_check(struct rtable_config *table, struct f_inst *prefix, struct f_inst *asn);
/* Hook for call bt_assert() function in configuration */
extern void (*bt_assert_hook)(int result, const struct f_line_item *assert);
/* Bird Tests */
struct f_bt_test_suite {
node n; /* Node in config->tests */
struct f_line *fn; /* Root of function */
const char *fn_name; /* Name of test */
const char *dsc; /* Description */
};
#endif
|
