isisd/isis_route.h

   1 /*
   2  * IS-IS Rout(e)ing protocol               - isis_route.h
   3  *
   4  * Copyright (C) 2001,2002   Sampo Saaristo
   5  *                           Tampere University of Technology
   6  *                           Institute of Communications Engineering
   7  *
   8  *                                         based on ../ospf6d/ospf6_route.[ch]
   9  *                                         by Yasuhiro Ohara
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public Licenseas published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  19  * more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; see the file COPYING; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25 #ifndef _ZEBRA_ISIS_ROUTE_H
  26 #define _ZEBRA_ISIS_ROUTE_H
  27
  28 struct isis_nexthop6 {
  29         ifindex_t ifindex;
  30         struct in6_addr ip6;
  31         struct in6_addr router_address6;
  32         unsigned int lock;
  33 };
  34
  35 struct isis_nexthop {
  36         ifindex_t ifindex;
  37         struct in_addr ip;
  38         struct in_addr router_address;
  39         unsigned int lock;
  40 };
  41
  42 struct isis_route_info {
  43 #define ISIS_ROUTE_FLAG_ACTIVE       0x01  /* active route for the prefix */
  44 #define ISIS_ROUTE_FLAG_ZEBRA_SYNCED 0x02  /* set when route synced to zebra */
  45 #define ISIS_ROUTE_FLAG_ZEBRA_RESYNC 0x04  /* set when route needs to sync */
  46         uint8_t flag;
  47         uint32_t cost;
  48         uint32_t depth;
  49         struct list *nexthops;
  50         struct list *nexthops6;
  51 };
  52
  53 struct isis_route_info *isis_route_create(struct prefix *prefix,
  54                                           struct prefix_ipv6 *src_p,
  55                                           uint32_t cost,
  56                                           uint32_t depth,
  57                                           struct list *adjacencies,
  58                                           struct isis_area *area,
  59                                           struct route_table *table);
  60
  61 /* Walk the given table and install new routes to zebra and remove old ones.
  62  * route status is tracked using ISIS_ROUTE_FLAG_ACTIVE */
  63 void isis_route_verify_table(struct isis_area *area,
  64                              struct route_table *table);
  65
  66 /* Same as isis_route_verify_table, but merge L1 and L2 routes before */
  67 void isis_route_verify_merge(struct isis_area *area,
  68                              struct route_table *level1_table,
  69                              struct route_table *level2_table);
  70
  71 /* Unset ISIS_ROUTE_FLAG_ACTIVE on all routes. Used before running spf. */
  72 void isis_route_invalidate_table(struct isis_area *area,
  73                                  struct route_table *table);
  74
  75 #endif /* _ZEBRA_ISIS_ROUTE_H */