[mirror_frr.git] / ospfd / ospf_lsa.h

/*
 * OSPF Link State Advertisement
 * Copyright (C) 1999, 2000 Toshiaki Takada
 *
 * 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 _ZEBRA_OSPF_LSA_H
#define _ZEBRA_OSPF_LSA_H

#include "stream.h"

/* OSPF LSA Range definition. */
#define OSPF_MIN_LSA		1  /* begin range here */
#if defined (HAVE_OPAQUE_LSA)
#define OSPF_MAX_LSA           12
#else
#define OSPF_MAX_LSA		8
#endif

/* OSPF LSA Type definition. */
#define OSPF_UNKNOWN_LSA	      0
#define OSPF_ROUTER_LSA               1
#define OSPF_NETWORK_LSA              2
#define OSPF_SUMMARY_LSA              3
#define OSPF_ASBR_SUMMARY_LSA         4
#define OSPF_AS_EXTERNAL_LSA          5
#define OSPF_GROUP_MEMBER_LSA	      6  /* Not supported. */
#define OSPF_AS_NSSA_LSA	              7
#define OSPF_EXTERNAL_ATTRIBUTES_LSA  8  /* Not supported. */
#define OSPF_OPAQUE_LINK_LSA	      9
#define OSPF_OPAQUE_AREA_LSA	     10
#define OSPF_OPAQUE_AS_LSA	     11

#define OSPF_LSA_HEADER_SIZE	20U
#define OSPF_MAX_LSA_SIZE	1500U

/* AS-external-LSA refresh method. */
#define LSA_REFRESH_IF_CHANGED	0
#define LSA_REFRESH_FORCE	1

/* OSPF LSA header. */
struct lsa_header
{
  u_int16_t ls_age;
  u_char options;
  u_char type;
  struct in_addr id;
  struct in_addr adv_router;
  u_int32_t ls_seqnum;
  u_int16_t checksum;
  u_int16_t length;
};

/* OSPF LSA. */
struct ospf_lsa
{
  /* LSA origination flag. */
  u_char flags;
#define OSPF_LSA_SELF		  0x01
#define OSPF_LSA_SELF_CHECKED	  0x02
#define OSPF_LSA_RECEIVED	  0x04
#define OSPF_LSA_APPROVED	  0x08
#define OSPF_LSA_DISCARD	  0x10
#define OSPF_LSA_LOCAL_XLT	  0x20
#define OSPF_LSA_PREMATURE_AGE	  0x40

  /* LSA data. */
  struct lsa_header *data;

  /* Received time stamp. */
  struct timeval tv_recv;

  /* Last time it was originated */
  struct timeval tv_orig;

  /* All of reference count, also lock to remove. */
  int lock;

  /* Flags for the SPF calculation. */
  int stat;
  #define LSA_SPF_NOT_EXPLORED	-1
  #define LSA_SPF_IN_SPFTREE	-2
  /* If stat >= 0, stat is LSA position in candidates heap. */
  
  /* References to this LSA in neighbor retransmission lists*/
  int retransmit_counter;

  /* Area the LSA belongs to, may be NULL if AS-external-LSA. */
  struct ospf_area *area;

  /* Parent LSDB. */
  struct ospf_lsdb *lsdb;

  /* Related Route. */
  void *route;

  /* Refreshement List or Queue */
  int refresh_list;

#ifdef HAVE_OPAQUE_LSA
  /* For Type-9 Opaque-LSAs, reference to ospf-interface is required. */
  struct ospf_interface *oi;
#endif /* HAVE_OPAQUE_LSA */
};

/* OSPF LSA Link Type. */
#define LSA_LINK_TYPE_POINTOPOINT      1
#define LSA_LINK_TYPE_TRANSIT          2
#define LSA_LINK_TYPE_STUB             3
#define LSA_LINK_TYPE_VIRTUALLINK      4

/* OSPF Router LSA Flag. */
#define ROUTER_LSA_BORDER	       0x01 /* The router is an ABR */
#define ROUTER_LSA_EXTERNAL	       0x02 /* The router is an ASBR */
#define ROUTER_LSA_VIRTUAL	       0x04 /* The router has a VL in this area */
#define ROUTER_LSA_NT		       0x10 /* The routers always translates Type-7 */
#define ROUTER_LSA_SHORTCUT	       0x20 /* Shortcut-ABR specific flag */

#define IS_ROUTER_LSA_VIRTUAL(x)       ((x)->flags & ROUTER_LSA_VIRTUAL)
#define IS_ROUTER_LSA_EXTERNAL(x)      ((x)->flags & ROUTER_LSA_EXTERNAL)
#define IS_ROUTER_LSA_BORDER(x)	       ((x)->flags & ROUTER_LSA_BORDER)
#define IS_ROUTER_LSA_SHORTCUT(x)      ((x)->flags & ROUTER_LSA_SHORTCUT)
#define IS_ROUTER_LSA_NT(x)            ((x)->flags & ROUTER_LSA_NT)

/* OSPF Router-LSA Link information. */
struct router_lsa_link
{
  struct in_addr link_id;
  struct in_addr link_data;
  struct
  {
    u_char type;
    u_char tos_count;
    u_int16_t metric;
  } m[1];
};

/* OSPF Router-LSAs structure. */
struct router_lsa
{
  struct lsa_header header;
  u_char flags;
  u_char zero;
  u_int16_t links;
  struct
  {
    struct in_addr link_id;
    struct in_addr link_data;
    u_char type;
    u_char tos;
    u_int16_t metric;
  } link[1];
};

/* OSPF Network-LSAs structure. */
struct network_lsa
{
  struct lsa_header header;
  struct in_addr mask;
  struct in_addr routers[1];
};

/* OSPF Summary-LSAs structure. */
struct summary_lsa
{
  struct lsa_header header;
  struct in_addr mask;
  u_char tos;
  u_char metric[3];
};

/* OSPF AS-external-LSAs structure. */
struct as_external_lsa
{
  struct lsa_header header;
  struct in_addr mask;
  struct
  {
    u_char tos;
    u_char metric[3];
    struct in_addr fwd_addr;
    u_int32_t route_tag;
  } e[1];
};

#ifdef HAVE_OPAQUE_LSA
#include "ospfd/ospf_opaque.h"
#endif /* HAVE_OPAQUE_LSA */

/* Macros. */
#define GET_METRIC(x) get_metric(x)
#define IS_EXTERNAL_METRIC(x)   ((x) & 0x80)

#define GET_AGE(x)     (ntohs ((x)->data->ls_age) + time (NULL) - (x)->tv_recv)
#define LS_AGE(x)      (OSPF_LSA_MAXAGE < get_age(x) ? \
                                           OSPF_LSA_MAXAGE : get_age(x))
#define IS_LSA_SELF(L)          (CHECK_FLAG ((L)->flags, OSPF_LSA_SELF))
#define IS_LSA_MAXAGE(L)        (LS_AGE ((L)) == OSPF_LSA_MAXAGE)

#define OSPF_LSA_UPDATE_DELAY		2

#define OSPF_LSA_UPDATE_TIMER_ON(T,F) \
      if (!(T)) \
        (T) = thread_add_timer (master, (F), 0, 2)

/* Prototypes. */
/* XXX: Eek, time functions, similar are in lib/thread.c */
extern struct timeval tv_adjust (struct timeval);
extern int tv_ceil (struct timeval);
extern int tv_floor (struct timeval);
extern struct timeval int2tv (int);
extern struct timeval tv_add (struct timeval, struct timeval);
extern struct timeval tv_sub (struct timeval, struct timeval);
extern int tv_cmp (struct timeval, struct timeval);

extern int get_age (struct ospf_lsa *);
extern u_int16_t ospf_lsa_checksum (struct lsa_header *);
extern int ospf_lsa_refresh_delay (struct ospf_lsa *);

extern const char *dump_lsa_key (struct ospf_lsa *);
extern u_int32_t lsa_seqnum_increment (struct ospf_lsa *);
extern void lsa_header_set (struct stream *, u_char, u_char, struct in_addr,
		     struct in_addr);
extern struct ospf_neighbor *ospf_nbr_lookup_ptop (struct ospf_interface *);

/* Prototype for LSA primitive. */
extern struct ospf_lsa *ospf_lsa_new (void);
extern struct ospf_lsa *ospf_lsa_dup (struct ospf_lsa *);
extern void ospf_lsa_free (struct ospf_lsa *);
extern struct ospf_lsa *ospf_lsa_lock (struct ospf_lsa *);
extern void ospf_lsa_unlock (struct ospf_lsa *);
extern void ospf_lsa_discard (struct ospf_lsa *);

extern struct lsa_header *ospf_lsa_data_new (size_t);
extern struct lsa_header *ospf_lsa_data_dup (struct lsa_header *);
extern void ospf_lsa_data_free (struct lsa_header *);

/* Prototype for various LSAs */
extern int ospf_router_lsa_update_timer (struct thread *);
extern void ospf_router_lsa_timer_add (struct ospf_area *);

extern int ospf_network_lsa_refresh (struct ospf_lsa *, struct ospf_interface *);
extern void ospf_network_lsa_timer_add (struct ospf_interface *);

extern struct ospf_lsa *ospf_summary_lsa_originate (struct prefix_ipv4 *, u_int32_t,
					     struct ospf_area *);
extern struct ospf_lsa *ospf_summary_asbr_lsa_originate (struct prefix_ipv4 *,
						  u_int32_t,
						  struct ospf_area *);
extern struct ospf_lsa *ospf_summary_lsa_refresh (struct ospf *, struct ospf_lsa *);
extern struct ospf_lsa *ospf_summary_asbr_lsa_refresh (struct ospf *, struct ospf_lsa *);

extern struct ospf_lsa *ospf_lsa_install (struct ospf *,
				   struct ospf_interface *, struct ospf_lsa *);

extern void ospf_nssa_lsa_flush (struct ospf *ospf, struct prefix_ipv4 *p);
extern void ospf_external_lsa_flush (struct ospf *, u_char, struct prefix_ipv4 *,
			      unsigned int /* , struct in_addr nexthop */);

extern struct in_addr ospf_get_ip_from_ifp (struct ospf_interface *);

extern struct ospf_lsa *ospf_external_lsa_originate (struct ospf *, struct external_info *);
extern int ospf_external_lsa_originate_timer (struct thread *);
extern struct ospf_lsa *ospf_lsa_lookup (struct ospf_area *, u_int32_t,
				  struct in_addr, struct in_addr);
extern struct ospf_lsa *ospf_lsa_lookup_by_id (struct ospf_area *,
                                        u_int32_t, 
                                        struct in_addr);
extern struct ospf_lsa *ospf_lsa_lookup_by_header (struct ospf_area *,
					    struct lsa_header *);
extern int ospf_lsa_more_recent (struct ospf_lsa *, struct ospf_lsa *);
extern int ospf_lsa_different (struct ospf_lsa *, struct ospf_lsa *);
extern void ospf_flush_self_originated_lsas_now (struct ospf *);

extern int ospf_lsa_is_self_originated (struct ospf *, struct ospf_lsa *);

extern struct ospf_lsa *ospf_lsa_lookup_by_prefix (struct ospf_lsdb *, u_char,
					    struct prefix_ipv4 *,
					    struct in_addr);

extern void ospf_lsa_maxage (struct ospf *, struct ospf_lsa *);
extern u_int32_t get_metric (u_char *);

extern int ospf_lsa_maxage_walker (struct thread *);

extern void ospf_external_lsa_refresh_default (struct ospf *);

extern void ospf_external_lsa_refresh_type (struct ospf *, u_char, int);
extern void ospf_external_lsa_refresh (struct ospf *, struct ospf_lsa *,
				struct external_info *, int);
extern struct in_addr ospf_lsa_unique_id (struct ospf *, struct ospf_lsdb *, u_char,
				   struct prefix_ipv4 *);
extern void ospf_schedule_lsa_flood_area (struct ospf_area *, struct ospf_lsa *);
extern void ospf_schedule_lsa_flush_area (struct ospf_area *, struct ospf_lsa *);

extern void ospf_refresher_register_lsa (struct ospf *, struct ospf_lsa *);
extern void ospf_refresher_unregister_lsa (struct ospf *, struct ospf_lsa *);
extern int ospf_lsa_refresh_walker (struct thread *);

extern void ospf_lsa_maxage_delete (struct ospf *, struct ospf_lsa *);

extern void ospf_discard_from_db (struct ospf *, struct ospf_lsdb *, struct ospf_lsa*);
extern int is_prefix_default (struct prefix_ipv4 *);

extern int metric_type (struct ospf *, u_char);
extern int metric_value (struct ospf *, u_char);

extern struct in_addr ospf_get_nssa_ip (struct ospf_area *);
extern int ospf_translated_nssa_compare (struct ospf_lsa *, struct ospf_lsa *);
extern struct ospf_lsa *ospf_translated_nssa_refresh (struct ospf *, struct ospf_lsa *,
                                   struct ospf_lsa *);
extern struct ospf_lsa *ospf_translated_nssa_originate (struct ospf *, struct ospf_lsa *);

#endif /* _ZEBRA_OSPF_LSA_H */
Commit	Line	Data
718e3744	1	/*
	2	* OSPF Link State Advertisement
	3	* Copyright (C) 1999, 2000 Toshiaki Takada
	4	*
	5	* This file is part of GNU Zebra.
	6	*
	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
	10	* later version.
	11	*
	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.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with GNU Zebra; see the file COPYING. If not, write to the Free
	19	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	20	* 02111-1307, USA.
	21	*/
	22
	23	#ifndef _ZEBRA_OSPF_LSA_H
	24	#define _ZEBRA_OSPF_LSA_H
	25
4dadc291	26	#include "stream.h"
4dadc291	27
718e3744	28	/* OSPF LSA Range definition. */
	29	#define OSPF_MIN_LSA 1 /* begin range here */
	30	#if defined (HAVE_OPAQUE_LSA)
	31	#define OSPF_MAX_LSA 12
718e3744	32	#else
beebba75	33	#define OSPF_MAX_LSA 8
718e3744	34	#endif
	35
	36	/* OSPF LSA Type definition. */
	37	#define OSPF_UNKNOWN_LSA 0
	38	#define OSPF_ROUTER_LSA 1
	39	#define OSPF_NETWORK_LSA 2
	40	#define OSPF_SUMMARY_LSA 3
	41	#define OSPF_ASBR_SUMMARY_LSA 4
	42	#define OSPF_AS_EXTERNAL_LSA 5
	43	#define OSPF_GROUP_MEMBER_LSA 6 /* Not supported. */
	44	#define OSPF_AS_NSSA_LSA 7
	45	#define OSPF_EXTERNAL_ATTRIBUTES_LSA 8 /* Not supported. */
	46	#define OSPF_OPAQUE_LINK_LSA 9
	47	#define OSPF_OPAQUE_AREA_LSA 10
	48	#define OSPF_OPAQUE_AS_LSA 11
	49
6c835671	50	#define OSPF_LSA_HEADER_SIZE 20U
6c835671	51	#define OSPF_MAX_LSA_SIZE 1500U
718e3744	52
	53	/* AS-external-LSA refresh method. */
	54	#define LSA_REFRESH_IF_CHANGED 0
	55	#define LSA_REFRESH_FORCE 1
	56
	57	/* OSPF LSA header. */
	58	struct lsa_header
	59	{
	60	u_int16_t ls_age;
	61	u_char options;
	62	u_char type;
	63	struct in_addr id;
	64	struct in_addr adv_router;
6c835671	65	u_int32_t ls_seqnum;
718e3744	66	u_int16_t checksum;
	67	u_int16_t length;
	68	};
	69
	70	/* OSPF LSA. */
	71	struct ospf_lsa
	72	{
	73	/* LSA origination flag. */
	74	u_char flags;
	75	#define OSPF_LSA_SELF 0x01
	76	#define OSPF_LSA_SELF_CHECKED 0x02
	77	#define OSPF_LSA_RECEIVED 0x04
	78	#define OSPF_LSA_APPROVED 0x08
	79	#define OSPF_LSA_DISCARD 0x10
718e3744	80	#define OSPF_LSA_LOCAL_XLT 0x20
7ddf1d6e	81	#define OSPF_LSA_PREMATURE_AGE 0x40
718e3744	82
	83	/* LSA data. */
	84	struct lsa_header *data;
	85
	86	/* Received time stamp. */
	87	struct timeval tv_recv;
	88
	89	/* Last time it was originated */
	90	struct timeval tv_orig;
	91
	92	/* All of reference count, also lock to remove. */
	93	int lock;
	94
462f20d5	95	/* Flags for the SPF calculation. */
	96	int stat;
	97	#define LSA_SPF_NOT_EXPLORED -1
	98	#define LSA_SPF_IN_SPFTREE -2
	99	/* If stat >= 0, stat is LSA position in candidates heap. */
	100
718e3744	101	/* References to this LSA in neighbor retransmission lists*/
	102	int retransmit_counter;
	103
	104	/* Area the LSA belongs to, may be NULL if AS-external-LSA. */
	105	struct ospf_area *area;
	106
	107	/* Parent LSDB. */
	108	struct ospf_lsdb *lsdb;
	109
	110	/* Related Route. */
	111	void *route;
	112
	113	/* Refreshement List or Queue */
	114	int refresh_list;
	115
	116	#ifdef HAVE_OPAQUE_LSA
	117	/* For Type-9 Opaque-LSAs, reference to ospf-interface is required. */
	118	struct ospf_interface *oi;
	119	#endif /* HAVE_OPAQUE_LSA */
	120	};
	121
	122	/* OSPF LSA Link Type. */
	123	#define LSA_LINK_TYPE_POINTOPOINT 1
	124	#define LSA_LINK_TYPE_TRANSIT 2
	125	#define LSA_LINK_TYPE_STUB 3
	126	#define LSA_LINK_TYPE_VIRTUALLINK 4
	127
	128	/* OSPF Router LSA Flag. */
	129	#define ROUTER_LSA_BORDER 0x01 /* The router is an ABR */
	130	#define ROUTER_LSA_EXTERNAL 0x02 /* The router is an ASBR */
	131	#define ROUTER_LSA_VIRTUAL 0x04 /* The router has a VL in this area */
0c9491b3	132	#define ROUTER_LSA_NT 0x10 /* The routers always translates Type-7 */
718e3744	133	#define ROUTER_LSA_SHORTCUT 0x20 /* Shortcut-ABR specific flag */
	134
	135	#define IS_ROUTER_LSA_VIRTUAL(x) ((x)->flags & ROUTER_LSA_VIRTUAL)
	136	#define IS_ROUTER_LSA_EXTERNAL(x) ((x)->flags & ROUTER_LSA_EXTERNAL)
	137	#define IS_ROUTER_LSA_BORDER(x) ((x)->flags & ROUTER_LSA_BORDER)
	138	#define IS_ROUTER_LSA_SHORTCUT(x) ((x)->flags & ROUTER_LSA_SHORTCUT)
0c9491b3	139	#define IS_ROUTER_LSA_NT(x) ((x)->flags & ROUTER_LSA_NT)
718e3744	140
	141	/* OSPF Router-LSA Link information. */
	142	struct router_lsa_link
	143	{
	144	struct in_addr link_id;
	145	struct in_addr link_data;
	146	struct
	147	{
	148	u_char type;
	149	u_char tos_count;
	150	u_int16_t metric;
	151	} m[1];
	152	};
	153
	154	/* OSPF Router-LSAs structure. */
	155	struct router_lsa
	156	{
	157	struct lsa_header header;
	158	u_char flags;
	159	u_char zero;
	160	u_int16_t links;
	161	struct
	162	{
	163	struct in_addr link_id;
	164	struct in_addr link_data;
	165	u_char type;
	166	u_char tos;
	167	u_int16_t metric;
	168	} link[1];
	169	};
	170
	171	/* OSPF Network-LSAs structure. */
	172	struct network_lsa
	173	{
	174	struct lsa_header header;
	175	struct in_addr mask;
	176	struct in_addr routers[1];
	177	};
	178
	179	/* OSPF Summary-LSAs structure. */
	180	struct summary_lsa
	181	{
	182	struct lsa_header header;
	183	struct in_addr mask;
	184	u_char tos;
	185	u_char metric[3];
	186	};
	187
	188	/* OSPF AS-external-LSAs structure. */
	189	struct as_external_lsa
	190	{
	191	struct lsa_header header;
	192	struct in_addr mask;
	193	struct
	194	{
	195	u_char tos;
	196	u_char metric[3];
	197	struct in_addr fwd_addr;
	198	u_int32_t route_tag;
	199	} e[1];
	200	};
	201
	202	#ifdef HAVE_OPAQUE_LSA
	203	#include "ospfd/ospf_opaque.h"
204	#endif /* HAVE_OPAQUE_LSA */
205
206	/* Macros. */
207	#define GET_METRIC(x) get_metric(x)
208	#define IS_EXTERNAL_METRIC(x) ((x) & 0x80)
209
210	#define GET_AGE(x) (ntohs ((x)->data->ls_age) + time (NULL) - (x)->tv_recv)
211	#define LS_AGE(x) (OSPF_LSA_MAXAGE < get_age(x) ? \
212	OSPF_LSA_MAXAGE : get_age(x))
213	#define IS_LSA_SELF(L) (CHECK_FLAG ((L)->flags, OSPF_LSA_SELF))
214	#define IS_LSA_MAXAGE(L) (LS_AGE ((L)) == OSPF_LSA_MAXAGE)
215
718e3744	216	#define OSPF_LSA_UPDATE_DELAY 2
	217
	218	#define OSPF_LSA_UPDATE_TIMER_ON(T,F) \
	219	if (!(T)) \
	220	(T) = thread_add_timer (master, (F), 0, 2)
	221
718e3744	222	/* Prototypes. */
4dadc291	223	/* XXX: Eek, time functions, similar are in lib/thread.c */
	224	extern struct timeval tv_adjust (struct timeval);
	225	extern int tv_ceil (struct timeval);
	226	extern int tv_floor (struct timeval);
	227	extern struct timeval int2tv (int);
	228	extern struct timeval tv_add (struct timeval, struct timeval);
	229	extern struct timeval tv_sub (struct timeval, struct timeval);
	230	extern int tv_cmp (struct timeval, struct timeval);
	231
	232	extern int get_age (struct ospf_lsa *);
	233	extern u_int16_t ospf_lsa_checksum (struct lsa_header *);
	234	extern int ospf_lsa_refresh_delay (struct ospf_lsa *);
	235
	236	extern const char dump_lsa_key (struct ospf_lsa );
	237	extern u_int32_t lsa_seqnum_increment (struct ospf_lsa *);
	238	extern void lsa_header_set (struct stream *, u_char, u_char, struct in_addr,
68980084	239	struct in_addr);
4dadc291	240	extern struct ospf_neighbor ospf_nbr_lookup_ptop (struct ospf_interface );
718e3744	241
718e3744	242	/* Prototype for LSA primitive. */
4dadc291	243	extern struct ospf_lsa *ospf_lsa_new (void);
	244	extern struct ospf_lsa ospf_lsa_dup (struct ospf_lsa );
	245	extern void ospf_lsa_free (struct ospf_lsa *);
	246	extern struct ospf_lsa ospf_lsa_lock (struct ospf_lsa );
	247	extern void ospf_lsa_unlock (struct ospf_lsa *);
	248	extern void ospf_lsa_discard (struct ospf_lsa *);
718e3744	249
4dadc291	250	extern struct lsa_header *ospf_lsa_data_new (size_t);
	251	extern struct lsa_header ospf_lsa_data_dup (struct lsa_header );
	252	extern void ospf_lsa_data_free (struct lsa_header *);
718e3744	253
718e3744	254	/* Prototype for various LSAs */
4dadc291	255	extern int ospf_router_lsa_update_timer (struct thread *);
4dadc291	256	extern void ospf_router_lsa_timer_add (struct ospf_area *);
718e3744	257
4dadc291	258	extern int ospf_network_lsa_refresh (struct ospf_lsa , struct ospf_interface );
4dadc291	259	extern void ospf_network_lsa_timer_add (struct ospf_interface *);
718e3744	260
4dadc291	261	extern struct ospf_lsa ospf_summary_lsa_originate (struct prefix_ipv4 , u_int32_t,
718e3744	262	struct ospf_area *);
4dadc291	263	extern struct ospf_lsa ospf_summary_asbr_lsa_originate (struct prefix_ipv4 ,
718e3744	264	u_int32_t,
718e3744	265	struct ospf_area *);
4dadc291	266	extern struct ospf_lsa ospf_summary_lsa_refresh (struct ospf , struct ospf_lsa *);
4dadc291	267	extern struct ospf_lsa ospf_summary_asbr_lsa_refresh (struct ospf , struct ospf_lsa *);
718e3744	268
4dadc291	269	extern struct ospf_lsa ospf_lsa_install (struct ospf ,
68980084	270	struct ospf_interface , struct ospf_lsa );
718e3744	271
4dadc291	272	extern void ospf_nssa_lsa_flush (struct ospf ospf, struct prefix_ipv4 p);
4dadc291	273	extern void ospf_external_lsa_flush (struct ospf , u_char, struct prefix_ipv4 ,
5339cfdb	274	unsigned int /* , struct in_addr nexthop */);
718e3744	275
4dadc291	276	extern struct in_addr ospf_get_ip_from_ifp (struct ospf_interface *);
718e3744	277
4dadc291	278	extern struct ospf_lsa ospf_external_lsa_originate (struct ospf , struct external_info *);
	279	extern int ospf_external_lsa_originate_timer (struct thread *);
	280	extern struct ospf_lsa ospf_lsa_lookup (struct ospf_area , u_int32_t,
718e3744	281	struct in_addr, struct in_addr);
4dadc291	282	extern struct ospf_lsa ospf_lsa_lookup_by_id (struct ospf_area ,
d4a53d58	283	u_int32_t,
d4a53d58	284	struct in_addr);
4dadc291	285	extern struct ospf_lsa ospf_lsa_lookup_by_header (struct ospf_area ,
718e3744	286	struct lsa_header *);
4dadc291	287	extern int ospf_lsa_more_recent (struct ospf_lsa , struct ospf_lsa );
	288	extern int ospf_lsa_different (struct ospf_lsa , struct ospf_lsa );
	289	extern void ospf_flush_self_originated_lsas_now (struct ospf *);
718e3744	290
4dadc291	291	extern int ospf_lsa_is_self_originated (struct ospf , struct ospf_lsa );
718e3744	292
4dadc291	293	extern struct ospf_lsa ospf_lsa_lookup_by_prefix (struct ospf_lsdb , u_char,
68980084	294	struct prefix_ipv4 *,
68980084	295	struct in_addr);
718e3744	296
4dadc291	297	extern void ospf_lsa_maxage (struct ospf , struct ospf_lsa );
4dadc291	298	extern u_int32_t get_metric (u_char *);
718e3744	299
4dadc291	300	extern int ospf_lsa_maxage_walker (struct thread *);
718e3744	301
4dadc291	302	extern void ospf_external_lsa_refresh_default (struct ospf *);
718e3744	303
4dadc291	304	extern void ospf_external_lsa_refresh_type (struct ospf *, u_char, int);
4dadc291	305	extern void ospf_external_lsa_refresh (struct ospf , struct ospf_lsa ,
68980084	306	struct external_info *, int);
4dadc291	307	extern struct in_addr ospf_lsa_unique_id (struct ospf , struct ospf_lsdb , u_char,
718e3744	308	struct prefix_ipv4 *);
4dadc291	309	extern void ospf_schedule_lsa_flood_area (struct ospf_area , struct ospf_lsa );
4dadc291	310	extern void ospf_schedule_lsa_flush_area (struct ospf_area , struct ospf_lsa );
718e3744	311
4dadc291	312	extern void ospf_refresher_register_lsa (struct ospf , struct ospf_lsa );
	313	extern void ospf_refresher_unregister_lsa (struct ospf , struct ospf_lsa );
	314	extern int ospf_lsa_refresh_walker (struct thread *);
718e3744	315
4dadc291	316	extern void ospf_lsa_maxage_delete (struct ospf , struct ospf_lsa );
718e3744	317
4dadc291	318	extern void ospf_discard_from_db (struct ospf , struct ospf_lsdb , struct ospf_lsa*);
4dadc291	319	extern int is_prefix_default (struct prefix_ipv4 *);
718e3744	320
4dadc291	321	extern int metric_type (struct ospf *, u_char);
4dadc291	322	extern int metric_value (struct ospf *, u_char);
68980084	323
4dadc291	324	extern struct in_addr ospf_get_nssa_ip (struct ospf_area *);
	325	extern int ospf_translated_nssa_compare (struct ospf_lsa , struct ospf_lsa );
	326	extern struct ospf_lsa ospf_translated_nssa_refresh (struct ospf , struct ospf_lsa *,
d4a53d58	327	struct ospf_lsa *);
4dadc291	328	extern struct ospf_lsa ospf_translated_nssa_originate (struct ospf , struct ospf_lsa *);
f2c80652	329
718e3744	330	#endif /* _ZEBRA_OSPF_LSA_H */