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 /* Maximum ACL name length */
  29 #define ACL_NAMSIZ                128
  30
  31 /* Filter direction.  */
  32 #define FILTER_IN                 0
  33 #define FILTER_OUT                1
  34 #define FILTER_MAX                2
  35
  36 /* Filter type is made by `permit', `deny' and `dynamic'. */
  37 enum filter_type
  38 {
  39   FILTER_DENY,
  40   FILTER_PERMIT,
  41   FILTER_DYNAMIC
  42 };
  43
  44 enum access_type
  45 {
  46   ACCESS_TYPE_STRING,
  47   ACCESS_TYPE_NUMBER
  48 };
  49
  50 /* Access list */
  51 struct access_list
  52 {
  53   char *name;
  54   char *remark;
  55
  56   struct access_master *master;
  57
  58   enum access_type type;
  59
  60   struct access_list *next;
  61   struct access_list *prev;
  62
  63   struct filter *head;
  64   struct filter *tail;
  65 };
  66
  67 /* Prototypes for access-list. */
  68 extern void access_list_init (void);
  69 extern void access_list_reset (void);
  70 extern void access_list_add_hook (void (*func)(struct access_list *));
  71 extern void access_list_delete_hook (void (*func)(struct access_list *));
  72 extern struct access_list *access_list_lookup (afi_t, const char *);
  73 extern enum filter_type access_list_apply (struct access_list *, void *);
  74
  75 #endif /* _ZEBRA_FILTER_H */