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 along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef _ZEBRA_OSPF_ABR_H
  23 #define _ZEBRA_OSPF_ABR_H
  24
  25 #define OSPF_ABR_TASK_DELAY     7
  26
  27 #define OSPF_AREA_RANGE_ADVERTISE       (1 << 0)
  28 #define OSPF_AREA_RANGE_SUBSTITUTE      (1 << 1)
  29
  30 /* Area range. */
  31 struct ospf_area_range
  32 {
  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
  63 extern struct ospf_area_range *ospf_area_range_lookup_next (struct ospf_area
  64                                                             *,
  65                                                             struct in_addr *,
  66                                                             int);
  67
  68 extern int ospf_area_range_set (struct ospf *, struct in_addr,
  69                                 struct prefix_ipv4 *, int);
  70 extern int ospf_area_range_cost_set (struct ospf *, struct in_addr,
  71                                      struct prefix_ipv4 *, u_int32_t);
  72 extern int ospf_area_range_unset (struct ospf *, struct in_addr,
  73                                   struct prefix_ipv4 *);
  74 extern int ospf_area_range_substitute_set (struct ospf *, struct in_addr,
  75                                            struct prefix_ipv4 *,
  76                                            struct prefix_ipv4 *);
  77 extern int ospf_area_range_substitute_unset (struct ospf *, struct in_addr,
  78                                              struct prefix_ipv4 *);
  79 extern struct ospf_area_range *ospf_area_range_match_any (struct ospf *,
  80                                                           struct prefix_ipv4
  81                                                           *);
  82 extern int ospf_area_range_active (struct ospf_area_range *);
  83 extern int ospf_act_bb_connection (struct ospf *);
  84
  85 extern void ospf_check_abr_status (struct ospf *);
  86 extern void ospf_abr_task (struct ospf *);
  87 extern void ospf_schedule_abr_task (struct ospf *);
  88
  89 extern void ospf_abr_announce_network_to_area (struct prefix_ipv4 *,
  90                                                u_int32_t,
  91                                                struct ospf_area *);
  92 #endif /* _ZEBRA_OSPF_ABR_H */