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    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 */