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718e3744 | 1 | /* |
2 | * OSPF calculation. | |
3 | * Copyright (C) 1999 Kunihiro Ishiguro | |
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 | ||
630e4807 | 23 | /* values for vertex->type */ |
24 | #define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */ | |
25 | #define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */ | |
718e3744 | 26 | |
630e4807 | 27 | /* values for vertex->flags */ |
718e3744 | 28 | #define OSPF_VERTEX_PROCESSED 0x01 |
29 | ||
630e4807 | 30 | /* The "root" is the node running the SPF calculation */ |
718e3744 | 31 | |
630e4807 | 32 | /* A router or network in an area */ |
718e3744 | 33 | struct vertex |
34 | { | |
35 | u_char flags; | |
630e4807 | 36 | u_char type; /* copied from LSA header */ |
37 | struct in_addr id; /* copied from LSA header */ | |
38 | struct lsa_header *lsa; /* Router or Network LSA */ | |
462f20d5 | 39 | int * stat; /* Link to LSA status. */ |
630e4807 | 40 | u_int32_t distance; /* from root to this vertex */ |
d355bfa7 | 41 | int backlink; /* link index of back-link */ |
52dc7ee6 | 42 | struct list *child; /* list of vertex: children in SPF tree*/ |
43 | struct list *nexthop; /* list of vertex_nexthop from root to this vertex */ | |
718e3744 | 44 | }; |
45 | ||
630e4807 | 46 | /* A nexthop taken on the root node to get to this (parent) vertex */ |
718e3744 | 47 | struct vertex_nexthop |
48 | { | |
630e4807 | 49 | struct ospf_interface *oi; /* output intf on root node */ |
50 | struct in_addr router; /* router address to send to */ | |
51 | struct vertex *parent; /* parent in SPF tree */ | |
718e3744 | 52 | }; |
53 | ||
d355bfa7 | 54 | void ospf_spf_calculate_schedule (struct ospf *); |
718e3744 | 55 | void ospf_rtrs_free (struct route_table *); |
56 | ||
57 | /* void ospf_spf_calculate_timer_add (); */ |