63a381dbf5
o Changed parameters of f_run. Changed rtein+rteout pair to rte pointer
passed by reference, added ea_list of temporary attrs again passed
by reference and finally added a pointer to memory pool for storing
temporary data (new ea_lists's, temporary rta's etc.).
o Re-ordered result codes, so that all accepts come before all rejects.
o Introduced FILTER_ACCEPT and FILTER_REJECT dummy values (will be
used in protocol configurations).
o Added filter_name() which returns name of a filter or ACCEPT/REJECT
for the dummies.
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
/*
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* BIRD Internet Routing Daemon -- Filters
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*
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* (c) 1999 Pavel Machek <pavel@ucw.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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#ifndef _BIRD_FILT_H_
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#define _BIRD_FILT_H_
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#include "lib/resource.h"
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struct f_inst { /* Instruction */
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struct f_inst *next; /* Structure is 16 bytes, anyway */
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int code;
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void *arg1, *arg2;
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};
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struct f_val {
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int type;
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union {
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int i;
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} val;
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};
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struct filter {
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char *name;
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struct f_inst *root;
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};
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void filters_postconfig(void);
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struct f_inst *f_new_inst(void);
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int f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struct linpool *tmp_pool);
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char *filter_name(struct filter *filter);
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#define F_ACCEPT 1 /* Need to preserve ordering: accepts < rejects! */
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#define F_MODIFY 2 /* FIXME: Introduce modification flags instead? */
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#define F_REJECT 3
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#define F_ERROR 4
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#define F_QUITBIRD 5
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#define FILTER_ACCEPT NULL
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#define FILTER_REJECT ((void *) 1)
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/* Type numbers must be in 0..0xff range */
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#define T_MASK 0xff
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/* Internal types */
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#define T_VOID 0
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#define T_RETURN 1
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/* User visible types, which fit in int */
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#define T_INT 0x10
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#define T_BOOL 0x11
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#define T_PAIR 0x12
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#define T_ENUM 0x13
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/* Bigger ones */
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#define T_IP 0x20
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#define T_PREFIX 0x21
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#define T_STRING 0x22
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#define T_SET 0x80
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#endif
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