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 {
  34   /* Area range address. */
  35   struct in_addr addr;
  36
  37   /* Area range masklen. */
  38   u_char masklen;
  39
  40   /* Flags. */
  41   u_char flags;
  42
  43   /* Number of more specific prefixes. */
  44   int specifics;
  45
  46   /* Addr and masklen to substitute. */
  47   struct in_addr subst_addr;
  48   u_char subst_masklen;
  49
  50   /* Range cost. */
  51   u_int32_t cost;
  52
  53   /* Configured range cost. */
  54   u_int32_t cost_config;
  55 #define OSPF_AREA_RANGE_COST_UNSPEC     -1U
  56 };
  57
  58 /* Prototypes. */
  59 extern struct ospf_area_range *ospf_area_range_lookup (struct ospf_area *,
  60                                                        struct prefix_ipv4 *);
  61
  62 extern struct ospf_area_range *ospf_some_area_range_match (struct prefix_ipv4
  63                                                            *);
  64
  65 extern struct ospf_area_range *ospf_area_range_lookup_next (struct ospf_area
  66                                                             *,
  67                                                             struct in_addr *,
  68                                                             int);
  69
  70 extern int ospf_area_range_set (struct ospf *, struct in_addr,
  71                                 struct prefix_ipv4 *, int);
  72 extern int ospf_area_range_cost_set (struct ospf *, struct in_addr,
  73                                      struct prefix_ipv4 *, u_int32_t);
  74 extern int ospf_area_range_unset (struct ospf *, struct in_addr,
  75                                   struct prefix_ipv4 *);
  76 extern int ospf_area_range_substitute_set (struct ospf *, struct in_addr,
  77                                            struct prefix_ipv4 *,
  78                                            struct prefix_ipv4 *);
  79 extern int ospf_area_range_substitute_unset (struct ospf *, struct in_addr,
  80                                              struct prefix_ipv4 *);
  81 extern struct ospf_area_range *ospf_area_range_match_any (struct ospf *,
  82                                                           struct prefix_ipv4
  83                                                           *);
  84 extern int ospf_area_range_active (struct ospf_area_range *);
  85 extern int ospf_act_bb_connection (struct ospf *);
  86
  87 extern void ospf_check_abr_status (struct ospf *);
  88 extern void ospf_abr_task (struct ospf *);
  89 extern void ospf_schedule_abr_task (struct ospf *);
  90
  91 extern void ospf_abr_announce_network_to_area (struct prefix_ipv4 *,
  92                                                u_int32_t,
  93                                                struct ospf_area *);
  94 #endif /* _ZEBRA_OSPF_ABR_H */