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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2003 Yasuhiro Ohara
*/
#ifndef OSPF6_SPF_H
#define OSPF6_SPF_H
#include "typesafe.h"
#include "ospf6_top.h"
#include "lib/json.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)
#define OSPF6_ASE_CALC_INTERVAL 1
PREDECL_SKIPLIST_NONUNIQ(vertex_pqueue);
/* Transit Vertex */
struct ospf6_vertex {
/* type of this vertex */
uint8_t type;
/* Vertex Identifier */
struct prefix vertex_id;
struct vertex_pqueue_item pqi;
/* Identifier String */
char name[128];
/* Associated Area */
struct ospf6_area *area;
/* Associated LSA */
struct ospf6_lsa *lsa;
/* Distance from Root (i.e. Cost) */
uint32_t cost;
/* Router hops to this node */
uint8_t hops;
/* capability bits */
uint8_t capability;
/* Optional capabilities */
uint8_t options[3];
/* For tree display */
struct ospf6_vertex *parent;
struct list *child_list;
/* nexthops to this node */
struct list *nh_list;
uint32_t link_id;
};
#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)
#define OSPF6_SPF_FLAGS_CONFIG_CHANGE (1 << 8)
#define OSPF6_SPF_FLAGS_ASBR_STATUS_CHANGE (1 << 9)
#define OSPF6_SPF_FLAGS_GR_FINISH (1 << 10)
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(uint32_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,
json_object *json_obj, bool use_json);
extern void ospf6_spf_config_write(struct vty *vty, struct ospf6 *ospf6);
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);
extern struct ospf6_lsa *ospf6_create_single_router_lsa(struct ospf6_area *area,
struct ospf6_lsdb *lsdb,
uint32_t adv_router);
extern void ospf6_remove_temp_router_lsa(struct ospf6_area *area);
extern void ospf6_ase_calculate_timer_add(struct ospf6 *ospf6);
extern int ospf6_ase_calculate_route(struct ospf6 *ospf6, struct ospf6_lsa *lsa,
struct ospf6_area *area);
extern bool
ospf6_merge_parents_nh_to_child(struct ospf6_vertex *v,
struct ospf6_route *route,
struct ospf6_route_table *result_table);
#endif /* OSPF6_SPF_H */
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