/*
 * 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 this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef OSPF6_TOP_H
#define OSPF6_TOP_H

#include "qobj.h"
#include "routemap.h"
struct ospf6_master {

	/* OSPFv3 instance. */
	struct list *ospf6;
	/* OSPFv3 thread master. */
	struct thread_master *master;
	in_addr_t zebra_router_id;
};

/* ospf6->config_flags */
enum {
	OSPF6_LOG_ADJACENCY_CHANGES =	(1 << 0),
	OSPF6_LOG_ADJACENCY_DETAIL =	(1 << 1),
};

struct ospf6_redist {
	uint8_t instance;

	/* Redistribute metric info. */
	struct {
		int type;  /* External metric type (E1 or E2).  */
		int value; /* Value for static metric (24-bit).
			    * -1 means metric value is not set.
			    */
	} dmetric;

	/* For redistribute route map. */
	struct {
		char *name;
		struct route_map *map;
	} route_map;
#define ROUTEMAP_NAME(R) (R->route_map.name)
#define ROUTEMAP(R) (R->route_map.map)
};

/* OSPFv3 top level data structure */
struct ospf6 {
	/* The relevant vrf_id */
	vrf_id_t vrf_id;

	char *name; /* VRF name */

	/* my router id */
	in_addr_t router_id;

	/* static router id */
	in_addr_t router_id_static;

	struct in_addr router_id_zebra;

	/* start time */
	struct timeval starttime;

	/* list of areas */
	struct list *area_list;
	struct ospf6_area *backbone;

	/* AS scope link state database */
	struct ospf6_lsdb *lsdb;
	struct ospf6_lsdb *lsdb_self;

	struct ospf6_route_table *route_table;
	struct ospf6_route_table *brouter_table;

	struct ospf6_route_table *external_table;
	struct route_table *external_id_table;
	uint32_t external_id;

	/* OSPF6 redistribute configuration */
	struct list *redist[ZEBRA_ROUTE_MAX + 1];

	uint8_t flag;
#define OSPF6_FLAG_ABR          0x04
#define OSPF6_FLAG_ASBR         0x08

	int redistribute; /* Num of redistributed protocols. */

	/* Configuration bitmask, refer to enum above */
	uint8_t config_flags;
	int default_originate; /* Default information originate. */
#define DEFAULT_ORIGINATE_NONE 0
#define DEFAULT_ORIGINATE_ZEBRA 1
#define DEFAULT_ORIGINATE_ALWAYS 2
	/* LSA timer parameters */
	unsigned int lsa_minarrival; /* LSA minimum arrival in milliseconds. */

	/* SPF parameters */
	unsigned int spf_delay;	/* SPF delay time. */
	unsigned int spf_holdtime;     /* SPF hold time. */
	unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
	unsigned int
		spf_hold_multiplier; /* Adaptive multiplier for hold time */
	unsigned int spf_reason;     /* reason bits while scheduling SPF */

	struct timeval ts_spf;		/* SPF calculation time stamp. */
	struct timeval ts_spf_duration; /* Execution time of last SPF */
	unsigned int last_spf_reason;   /* Last SPF reason */

	int fd;
	/* Threads */
	struct thread *t_spf_calc; /* SPF calculation timer. */
	struct thread *t_ase_calc; /* ASE calculation timer. */
	struct thread *maxage_remover;
	struct thread *t_distribute_update; /* Distirbute update timer. */
	struct thread *t_ospf6_receive; /* OSPF6 receive timer */
#define OSPF6_WRITE_INTERFACE_COUNT_DEFAULT 20
	struct thread *t_write;

	int write_oi_count; /* Num of packets sent per thread invocation */
	uint32_t ref_bandwidth;

	/* Distance parameters */
	uint8_t distance_all;
	uint8_t distance_intra;
	uint8_t distance_inter;
	uint8_t distance_external;

	struct route_table *distance_table;

	/* Used during ospf instance going down send LSDB
	 * update to neighbors immediatly */
	uint8_t inst_shutdown;

	/* Max number of multiple paths
	 * to support ECMP.
	 */
	uint16_t max_multipath;
	/* Count of NSSA areas */
	uint8_t anyNSSA;
	struct thread *t_abr_task; /* ABR task timer. */
	struct list *oi_write_q;

	uint32_t redist_count;
	QOBJ_FIELDS;
};
DECLARE_QOBJ_TYPE(ospf6);

#define OSPF6_DISABLED    0x01
#define OSPF6_STUB_ROUTER 0x02
#define OSPF6_MAX_IF_ADDRS 100
#define OSPF6_MAX_IF_ADDRS_JUMBO 200
#define OSPF6_DEFAULT_MTU 1500
#define OSPF6_JUMBO_MTU 9000

/* global pointer for OSPF top data structure */
extern struct ospf6 *ospf6;
extern struct ospf6_master *om6;

/* prototypes */
extern void ospf6_master_init(struct thread_master *master);
extern void ospf6_top_init(void);
extern void ospf6_delete(struct ospf6 *o);
extern void ospf6_router_id_update(struct ospf6 *ospf6);

extern void ospf6_maxage_remove(struct ospf6 *o);
extern struct ospf6 *ospf6_instance_create(const char *name);
void ospf6_vrf_link(struct ospf6 *ospf6, struct vrf *vrf);
void ospf6_vrf_unlink(struct ospf6 *ospf6, struct vrf *vrf);
struct ospf6 *ospf6_lookup_by_vrf_id(vrf_id_t vrf_id);
struct ospf6 *ospf6_lookup_by_vrf_name(const char *name);
const char *ospf6_vrf_id_to_name(vrf_id_t vrf_id);
void ospf6_vrf_init(void);
#endif /* OSPF6_TOP_H */