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77 lines
3.2 KiB
C
77 lines
3.2 KiB
C
/*
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* BIRD Internet Routing Daemon -- Filter instructions
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*
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* (c) 1999 Pavel Machek <pavel@ucw.cz>
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* (c) 2018--2019 Maria Matejka <mq@jmq.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*
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* Filter interpreter data structures and internal API.
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* See filter/f-inst.c for documentation.
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*/
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#ifndef _BIRD_F_INST_H_
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#define _BIRD_F_INST_H_
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#include "nest/bird.h"
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#include "conf/conf.h"
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#include "filter/filter.h"
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#include "filter/data.h"
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#include "lib/flowspec.h"
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/* Flags for instructions */
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enum f_instruction_flags {
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FIF_PRINTED = 1, /* FI_PRINT_AND_DIE: message put in buffer */
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} PACKED;
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/* Include generated filter instruction declarations */
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#include "filter/inst-gen.h"
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#define f_new_inst(...) MACRO_CONCAT_AFTER(f_new_inst_, MACRO_FIRST(__VA_ARGS__))(__VA_ARGS__)
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/* Convert the instruction back to the enum name */
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const char *f_instruction_name_(enum f_instruction_code fi);
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static inline const char *f_instruction_name(enum f_instruction_code fi)
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{ return f_instruction_name_(fi) + 3; }
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/* Filter structures for execution */
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/* Line of instructions to be unconditionally executed one after another */
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struct f_line {
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uint len; /* Line length */
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u8 args; /* Function: Args required */
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u8 vars;
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struct f_line_item items[0]; /* The items themselves */
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};
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/* Convert the f_inst infix tree to the f_line structures */
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struct f_line *f_linearize_concat(const struct f_inst * const inst[], uint count);
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static inline struct f_line *f_linearize(const struct f_inst *root)
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{ return f_linearize_concat(&root, 1); }
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void f_dump_line(const struct f_line *, uint indent);
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struct filter *f_new_where(struct f_inst *);
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static inline struct f_dynamic_attr f_new_dynamic_attr(u8 type, enum f_type f_type, uint code) /* Type as core knows it, type as filters know it, and code of dynamic attribute */
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{ return (struct f_dynamic_attr) { .type = type, .f_type = f_type, .ea_code = code }; } /* f_type currently unused; will be handy for static type checking */
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static inline struct f_dynamic_attr f_new_dynamic_attr_bit(u8 bit, enum f_type f_type, uint code) /* Type as core knows it, type as filters know it, and code of dynamic attribute */
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{ return (struct f_dynamic_attr) { .type = EAF_TYPE_BITFIELD, .bit = bit, .f_type = f_type, .ea_code = code }; } /* f_type currently unused; will be handy for static type checking */
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static inline struct f_static_attr f_new_static_attr(int f_type, int code, int readonly)
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{ return (struct f_static_attr) { .f_type = f_type, .sa_code = code, .readonly = readonly }; }
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struct f_inst *f_generate_complex(enum f_instruction_code fi_code, struct f_dynamic_attr da, struct f_inst *argument);
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struct f_inst *f_generate_roa_check(struct rtable_config *table, struct f_inst *prefix, struct f_inst *asn);
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/* Hook for call bt_assert() function in configuration */
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extern void (*bt_assert_hook)(int result, const struct f_line_item *assert);
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/* Bird Tests */
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struct f_bt_test_suite {
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node n; /* Node in config->tests */
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const struct f_line *fn; /* Root of function */
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const struct f_line *cmp; /* Compare to this function */
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const char *fn_name; /* Name of test */
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const char *dsc; /* Description */
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int result; /* Desired result */
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};
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#endif
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