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/*
* Copyright (C) 2003 Yasuhiro Ohara
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef OSPF6_SPF_H
#define OSPF6_SPF_H
#include "ospf6_top.h"
/* Debug option */
extern unsigned char conf_debug_ospf6_spf;
#define OSPF6_DEBUG_SPF_PROCESS 0x01
#define OSPF6_DEBUG_SPF_TIME 0x02
#define OSPF6_DEBUG_SPF_DATABASE 0x04
#define OSPF6_DEBUG_SPF_ON(level) \
(conf_debug_ospf6_spf |= (level))
#define OSPF6_DEBUG_SPF_OFF(level) \
(conf_debug_ospf6_spf &= ~(level))
#define IS_OSPF6_DEBUG_SPF(level) \
(conf_debug_ospf6_spf & OSPF6_DEBUG_SPF_ ## level)
/* Transit Vertex */
struct ospf6_vertex
{
/* type of this vertex */
u_int8_t type;
/* Vertex Identifier */
struct prefix vertex_id;
/* Identifier String */
char name[128];
/* Associated Area */
struct ospf6_area *area;
/* Associated LSA */
struct ospf6_lsa *lsa;
/* Distance from Root (i.e. Cost) */
u_int32_t cost;
/* Router hops to this node */
u_char hops;
/* nexthops to this node */
struct ospf6_nexthop nexthop[OSPF6_MULTI_PATH_LIMIT];
/* capability bits */
u_char capability;
/* Optional capabilities */
u_char options[3];
/* For tree display */
struct ospf6_vertex *parent;
struct list *child_list;
};
#define OSPF6_VERTEX_TYPE_ROUTER 0x01
#define OSPF6_VERTEX_TYPE_NETWORK 0x02
#define VERTEX_IS_TYPE(t, v) \
((v)->type == OSPF6_VERTEX_TYPE_ ## t ? 1 : 0)
/* What triggered the SPF? */
#define OSPF6_SPF_FLAGS_ROUTER_LSA_ADDED (1 << 0)
#define OSPF6_SPF_FLAGS_ROUTER_LSA_REMOVED (1 << 1)
#define OSPF6_SPF_FLAGS_NETWORK_LSA_ADDED (1 << 2)
#define OSPF6_SPF_FLAGS_NETWORK_LSA_REMOVED (1 << 3)
#define OSPF6_SPF_FLAGS_LINK_LSA_ADDED (1 << 4)
#define OSPF6_SPF_FLAGS_LINK_LSA_REMOVED (1 << 5)
#define OSPF6_SPF_FLAGS_ROUTER_LSA_ORIGINATED (1 << 6)
#define OSPF6_SPF_FLAGS_NETWORK_LSA_ORIGINATED (1 << 7)
static inline void
ospf6_set_spf_reason (struct ospf6* ospf, unsigned int reason)
{
ospf->spf_reason |= reason;
}
static inline void
ospf6_reset_spf_reason (struct ospf6 *ospf)
{
ospf->spf_reason = 0;
}
static inline unsigned int
ospf6_lsadd_to_spf_reason (struct ospf6_lsa *lsa)
{
unsigned int reason = 0;
switch (ntohs (lsa->header->type))
{
case OSPF6_LSTYPE_ROUTER:
reason = OSPF6_SPF_FLAGS_ROUTER_LSA_ADDED;
break;
case OSPF6_LSTYPE_NETWORK:
reason = OSPF6_SPF_FLAGS_NETWORK_LSA_ADDED;
break;
case OSPF6_LSTYPE_LINK:
reason = OSPF6_SPF_FLAGS_LINK_LSA_ADDED;
break;
default:
break;
}
return (reason);
}
static inline unsigned int
ospf6_lsremove_to_spf_reason (struct ospf6_lsa *lsa)
{
unsigned int reason = 0;
switch (ntohs (lsa->header->type))
{
case OSPF6_LSTYPE_ROUTER:
reason = OSPF6_SPF_FLAGS_ROUTER_LSA_REMOVED;
break;
case OSPF6_LSTYPE_NETWORK:
reason = OSPF6_SPF_FLAGS_NETWORK_LSA_REMOVED;
break;
case OSPF6_LSTYPE_LINK:
reason = OSPF6_SPF_FLAGS_LINK_LSA_REMOVED;
break;
default:
break;
}
return (reason);
}
extern void ospf6_spf_table_finish (struct ospf6_route_table *result_table);
extern void ospf6_spf_calculation (u_int32_t router_id,
struct ospf6_route_table *result_table,
struct ospf6_area *oa);
extern void ospf6_spf_schedule (struct ospf6 *ospf, unsigned int reason);
extern void ospf6_spf_display_subtree (struct vty *vty, const char *prefix,
int rest, struct ospf6_vertex *v);
extern void ospf6_spf_config_write (struct vty *vty);
extern int config_write_ospf6_debug_spf (struct vty *vty);
extern void install_element_ospf6_debug_spf (void);
extern void ospf6_spf_init (void);
extern void ospf6_spf_reason_string (unsigned int reason, char *buf, int size);
#endif /* OSPF6_SPF_H */
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