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         /* Area range address. */
  33         struct in_addr addr;
  34
  35         /* Area range masklen. */
  36         uint8_t masklen;
  37
  38         /* Flags. */
  39         uint8_t flags;
  40
  41         /* Number of more specific prefixes. */
  42         int specifics;
  43
  44         /* Addr and masklen to substitute. */
  45         struct in_addr subst_addr;
  46         uint8_t subst_masklen;
  47
  48         /* Range cost. */
  49         uint32_t cost;
  50
  51         /* Configured range cost. */
  52         uint32_t cost_config;
  53 };
  54
  55 /* Prototypes. */
  56 extern struct ospf_area_range *ospf_area_range_lookup(struct ospf_area *,
  57                                                       struct prefix_ipv4 *);
  58
  59 extern struct ospf_area_range *ospf_some_area_range_match(struct prefix_ipv4 *);
  60
  61 extern struct ospf_area_range *
  62 ospf_area_range_lookup_next(struct ospf_area *, struct in_addr *, int);
  63
  64 extern int ospf_area_range_set(struct ospf *, struct in_addr,
  65                                struct prefix_ipv4 *, int);
  66 extern int ospf_area_range_cost_set(struct ospf *, struct in_addr,
  67                                     struct prefix_ipv4 *, uint32_t);
  68 extern int ospf_area_range_unset(struct ospf *, struct in_addr,
  69                                  struct prefix_ipv4 *);
  70 extern int ospf_area_range_substitute_set(struct ospf *, struct in_addr,
  71                                           struct prefix_ipv4 *,
  72                                           struct prefix_ipv4 *);
  73 extern int ospf_area_range_substitute_unset(struct ospf *, struct in_addr,
  74                                             struct prefix_ipv4 *);
  75 extern struct ospf_area_range *ospf_area_range_match_any(struct ospf *,
  76                                                          struct prefix_ipv4 *);
  77 extern int ospf_area_range_active(struct ospf_area_range *);
  78 extern int ospf_act_bb_connection(struct ospf *);
  79
  80 extern void ospf_check_abr_status(struct ospf *);
  81 extern void ospf_abr_task(struct ospf *);
  82 extern void ospf_schedule_abr_task(struct ospf *);
  83
  84 extern void ospf_abr_announce_network_to_area(struct prefix_ipv4 *, uint32_t,
  85                                               struct ospf_area *);
  86 #endif /* _ZEBRA_OSPF_ABR_H */