3 * Copyright (C) 1999 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
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
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.
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
22 #ifndef _QUAGGA_OSPF_SPF_H
23 #define _QUAGGA_OSPF_SPF_H
25 /* values for vertex->type */
26 #define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */
27 #define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */
29 /* values for vertex->flags */
30 #define OSPF_VERTEX_PROCESSED 0x01
32 /* The "root" is the node running the SPF calculation */
34 /* A router or network in an area */
37 uint8_t type
; /* copied from LSA header */
38 struct in_addr id
; /* copied from LSA header */
39 struct lsa_header
*lsa
; /* Router or Network LSA */
40 int *stat
; /* Link to LSA status. */
41 uint32_t distance
; /* from root to this vertex */
42 struct list
*parents
; /* list of parents in SPF tree */
43 struct list
*children
; /* list of children in SPF tree*/
46 /* A nexthop taken on the root node to get to this (parent) vertex */
47 struct vertex_nexthop
{
48 struct ospf_interface
*oi
; /* output intf on root node */
49 struct in_addr router
; /* router address to send to */
52 struct vertex_parent
{
54 *nexthop
; /* link to nexthop info for this parent */
55 struct vertex
*parent
; /* parent vertex */
56 int backlink
; /* index back to parent for router-lsa's */
59 /* What triggered the SPF ? */
61 SPF_FLAG_ROUTER_LSA_INSTALL
= 1,
62 SPF_FLAG_NETWORK_LSA_INSTALL
,
63 SPF_FLAG_SUMMARY_LSA_INSTALL
,
64 SPF_FLAG_ASBR_SUMMARY_LSA_INSTALL
,
66 SPF_FLAG_ABR_STATUS_CHANGE
,
67 SPF_FLAG_ASBR_STATUS_CHANGE
,
68 SPF_FLAG_CONFIG_CHANGE
,
71 extern void ospf_spf_calculate_schedule(struct ospf
*, ospf_spf_reason_t
);
72 extern void ospf_rtrs_free(struct route_table
*);
74 /* void ospf_spf_calculate_timer_add (); */
75 #endif /* _QUAGGA_OSPF_SPF_H */