ospfd/ospf_abr.h

   1 /*
   2  * OSPF ABR functions.
   3  * Copyright (C) 1999 Alex Zinin
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * 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 Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22
  23 #ifndef _ZEBRA_OSPF_ABR_H
  24 #define _ZEBRA_OSPF_ABR_H
  25
  26 #define OSPF_ABR_TASK_DELAY     7
  27
  28 #define OSPF_AREA_RANGE_ADVERTISE       (1 << 0)
  29 #define OSPF_AREA_RANGE_SUBSTITUTE      (1 << 1)
  30
  31 /* Area range. */
  32 struct ospf_area_range {
  33         /* Area range address. */
  34         struct in_addr addr;
  35
  36         /* Area range masklen. */
  37         u_char masklen;
  38
  39         /* Flags. */
  40         u_char flags;
  41
  42         /* Number of more specific prefixes. */
  43         int specifics;
  44
  45         /* Addr and masklen to substitute. */
  46         struct in_addr subst_addr;
  47         u_char subst_masklen;
  48
  49         /* Range cost. */
  50         u_int32_t cost;
  51
  52         /* Configured range cost. */
  53         u_int32_t cost_config;
  54 };
  55
  56 /* Prototypes. */
  57 extern struct ospf_area_range *ospf_area_range_lookup(struct ospf_area *,
  58                                                       struct prefix_ipv4 *);
  59
  60 extern struct ospf_area_range *ospf_some_area_range_match(struct prefix_ipv4 *);
  61
  62 extern struct ospf_area_range *
  63 ospf_area_range_lookup_next(struct ospf_area *, struct in_addr *, int);
  64
  65 extern int ospf_area_range_set(struct ospf *, struct in_addr,
  66                                struct prefix_ipv4 *, int);
  67 extern int ospf_area_range_cost_set(struct ospf *, struct in_addr,
  68                                     struct prefix_ipv4 *, u_int32_t);
  69 extern int ospf_area_range_unset(struct ospf *, struct in_addr,
  70                                  struct prefix_ipv4 *);
  71 extern int ospf_area_range_substitute_set(struct ospf *, struct in_addr,
  72                                           struct prefix_ipv4 *,
  73                                           struct prefix_ipv4 *);
  74 extern int ospf_area_range_substitute_unset(struct ospf *, struct in_addr,
  75                                             struct prefix_ipv4 *);
  76 extern struct ospf_area_range *ospf_area_range_match_any(struct ospf *,
  77                                                          struct prefix_ipv4 *);
  78 extern int ospf_area_range_active(struct ospf_area_range *);
  79 extern int ospf_act_bb_connection(struct ospf *);
  80
  81 extern void ospf_check_abr_status(struct ospf *);
  82 extern void ospf_abr_task(struct ospf *);
  83 extern void ospf_schedule_abr_task(struct ospf *);
  84
  85 extern void ospf_abr_announce_network_to_area(struct prefix_ipv4 *, u_int32_t,
  86                                               struct ospf_area *);
  87 #endif /* _ZEBRA_OSPF_ABR_H */