lib/filter.h

   1 /*
   2  * Route filtering function.
   3  * Copyright (C) 1998 Kunihiro Ishiguro
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation; either version 2, or (at your
  10  * option) any later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef _ZEBRA_FILTER_H
  24 #define _ZEBRA_FILTER_H
  25
  26 #include "if.h"
  27
  28 /* Filter direction.  */
  29 #define FILTER_IN                 0
  30 #define FILTER_OUT                1
  31 #define FILTER_MAX                2
  32
  33 /* Filter type is made by `permit', `deny' and `dynamic'. */
  34 enum filter_type
  35 {
  36   FILTER_DENY,
  37   FILTER_PERMIT,
  38   FILTER_DYNAMIC
  39 };
  40
  41 enum access_type
  42 {
  43   ACCESS_TYPE_STRING,
  44   ACCESS_TYPE_NUMBER
  45 };
  46
  47 /* Access list */
  48 struct access_list
  49 {
  50   char *name;
  51   char *remark;
  52
  53   struct access_master *master;
  54
  55   enum access_type type;
  56
  57   struct access_list *next;
  58   struct access_list *prev;
  59
  60   struct filter *head;
  61   struct filter *tail;
  62 };
  63
  64 /* Prototypes for access-list. */
  65 extern void access_list_init (void);
  66 extern void access_list_reset (void);
  67 extern void access_list_add_hook (void (*func)(struct access_list *));
  68 extern void access_list_delete_hook (void (*func)(struct access_list *));
  69 extern struct access_list *access_list_lookup (afi_t, const char *);
  70 extern enum filter_type access_list_apply (struct access_list *, void *);
  71
  72 #endif /* _ZEBRA_FILTER_H */