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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OSPF ABR functions.
* Copyright (C) 1999 Alex Zinin
*/
#ifndef _ZEBRA_OSPF_ABR_H
#define _ZEBRA_OSPF_ABR_H
#define OSPF_ABR_TASK_DELAY 5
#define OSPF_ABR_DNA_TIMER 10
/* Delay in announceing Non-DNA routers
* so that LSAs are completely synced
* before generating indication LSAs.
*/
#define OSPF_AREA_RANGE_ADVERTISE (1 << 0)
#define OSPF_AREA_RANGE_SUBSTITUTE (1 << 1)
#define OSPF_AREA_RANGE_NSSA (1 << 2)
/* Area range. */
struct ospf_area_range {
/* Area range address. */
struct in_addr addr;
/* Area range masklen. */
uint8_t masklen;
/* Flags. */
uint8_t flags;
/* Number of more specific prefixes. */
int specifics;
/* Addr and masklen to substitute. */
struct in_addr subst_addr;
uint8_t subst_masklen;
/* Range cost. */
uint32_t cost;
/* Configured range cost. */
uint32_t cost_config;
};
/* Prototypes. */
extern struct ospf_area_range *ospf_area_range_lookup(struct ospf_area *,
struct route_table *,
struct prefix_ipv4 *);
extern struct ospf_area_range *
ospf_area_range_lookup_next(struct ospf_area *, struct in_addr *, int);
extern int ospf_area_range_set(struct ospf *, struct ospf_area *,
struct route_table *, struct prefix_ipv4 *, int,
bool);
extern int ospf_area_range_cost_set(struct ospf *, struct ospf_area *,
struct route_table *, struct prefix_ipv4 *,
uint32_t);
extern int ospf_area_range_unset(struct ospf *, struct ospf_area *,
struct route_table *, struct prefix_ipv4 *);
extern int ospf_area_range_substitute_set(struct ospf *, struct ospf_area *,
struct prefix_ipv4 *,
struct prefix_ipv4 *);
extern int ospf_area_range_substitute_unset(struct ospf *, struct ospf_area *,
struct prefix_ipv4 *);
extern struct ospf_area_range *ospf_area_range_match_any(struct ospf *,
struct prefix_ipv4 *);
extern int ospf_area_range_active(struct ospf_area_range *);
extern int ospf_act_bb_connection(struct ospf *);
extern void ospf_check_abr_status(struct ospf *);
extern void ospf_abr_task(struct ospf *);
extern void ospf_abr_nssa_task(struct ospf *ospf);
extern void ospf_schedule_abr_task(struct ospf *);
extern void ospf_abr_announce_network_to_area(struct prefix_ipv4 *, uint32_t,
struct ospf_area *);
extern void ospf_abr_nssa_type7_defaults(struct ospf *ospf);
extern void ospf_abr_nssa_check_status(struct ospf *ospf);
extern void ospf_abr_generate_indication_lsa(struct ospf *ospf,
const struct ospf_area *area);
extern void ospf_flush_indication_lsas(struct ospf *ospf);
extern void ospf_generate_indication_lsa(struct ospf *ospf,
struct ospf_area *area);
extern bool ospf_check_fr_enabled_all(struct ospf *ospf);
extern void ospf_recv_indication_lsa_flush(struct ospf_lsa *lsa);
/** @brief Static inline functions.
* @param Area pointer.
* @return area Flood Reduction status.
*/
static inline bool ospf_check_area_fr_enabled(const struct ospf_area *area)
{
return area->fr_info.enabled ? true : false;
}
#endif /* _ZEBRA_OSPF_ABR_H */
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