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
27 /* values for vertex->type */
28 #define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */
29 #define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */
31 /* values for vertex->flags */
32 #define OSPF_VERTEX_PROCESSED 0x01
34 /* The "root" is the node running the SPF calculation */
36 PREDECL_SKIPLIST_NONUNIQ(vertex_pqueue
);
37 /* A router or network in an area */
39 struct vertex_pqueue_item pqi
;
41 uint8_t type
; /* copied from LSA header */
42 struct in_addr id
; /* copied from LSA header */
43 struct ospf_lsa
*lsa_p
;
44 struct lsa_header
*lsa
; /* Router or Network LSA */
45 uint32_t distance
; /* from root to this vertex */
46 struct list
*parents
; /* list of parents in SPF tree */
47 struct list
*children
; /* list of children in SPF tree*/
50 struct vertex_nexthop
{
51 struct in_addr router
; /* router address to send to */
52 int lsa_pos
; /* LSA position for resolving the interface */
55 struct vertex_parent
{
56 struct vertex_nexthop
*nexthop
; /* nexthop taken on the root node */
57 struct vertex_nexthop
*local_nexthop
; /* local nexthop of the parent */
58 struct vertex
*parent
; /* parent vertex */
59 int backlink
; /* index back to parent for router-lsa's */
62 /* What triggered the SPF ? */
64 SPF_FLAG_ROUTER_LSA_INSTALL
= 1,
65 SPF_FLAG_NETWORK_LSA_INSTALL
,
66 SPF_FLAG_SUMMARY_LSA_INSTALL
,
67 SPF_FLAG_ASBR_SUMMARY_LSA_INSTALL
,
69 SPF_FLAG_ABR_STATUS_CHANGE
,
70 SPF_FLAG_ASBR_STATUS_CHANGE
,
71 SPF_FLAG_CONFIG_CHANGE
,
75 extern void ospf_spf_calculate_schedule(struct ospf
*, ospf_spf_reason_t
);
76 extern void ospf_spf_calculate(struct ospf_area
*area
,
77 struct ospf_lsa
*root_lsa
,
78 struct route_table
*new_table
,
79 struct route_table
*all_rtrs
,
80 struct route_table
*new_rtrs
, bool is_dry_run
,
82 extern void ospf_spf_calculate_area(struct ospf
*ospf
, struct ospf_area
*area
,
83 struct route_table
*new_table
,
84 struct route_table
*all_rtrs
,
85 struct route_table
*new_rtrs
);
86 extern void ospf_spf_calculate_areas(struct ospf
*ospf
,
87 struct route_table
*new_table
,
88 struct route_table
*all_rtrs
,
89 struct route_table
*new_rtrs
);
90 extern void ospf_rtrs_free(struct route_table
*);
91 extern void ospf_spf_cleanup(struct vertex
*spf
, struct list
*vertex_list
);
92 extern void ospf_spf_copy(struct vertex
*vertex
, struct list
*vertex_list
);
93 extern void ospf_spf_remove_resource(struct vertex
*vertex
,
94 struct list
*vertex_list
,
95 struct protected_resource
*resource
);
96 extern struct vertex
*ospf_spf_vertex_find(struct in_addr id
,
97 struct list
*vertex_list
);
98 extern struct vertex
*ospf_spf_vertex_by_nexthop(struct vertex
*root
,
99 struct in_addr
*nexthop
);
100 extern struct vertex_parent
*ospf_spf_vertex_parent_find(struct in_addr id
,
101 struct vertex
*vertex
);
102 extern int vertex_parent_cmp(void *aa
, void *bb
);
104 extern void ospf_spf_print(struct vty
*vty
, struct vertex
*v
, int i
);
105 extern void ospf_restart_spf(struct ospf
*ospf
);
106 /* void ospf_spf_calculate_timer_add (); */
107 #endif /* _QUAGGA_OSPF_SPF_H */