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 extern void ospf_abr_nssa_check_status(struct ospf *ospf); 87 #endif /* _ZEBRA_OSPF_ABR_H */ 88