[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

/* 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;

  /* 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)

struct ospf_route;
struct ospf_lsdb;

/* Prototypes. */
struct timeval tv_adjust (struct timeval);
int tv_ceil (struct timeval);
int tv_floor (struct timeval);
struct timeval int2tv (int);
struct timeval tv_add (struct timeval, struct timeval);
struct timeval tv_sub (struct timeval, struct timeval);
int tv_cmp (struct timeval, struct timeval);

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

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

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

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

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

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

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

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

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

struct in_addr ospf_get_ip_from_ifp (struct ospf_interface *);

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

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

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

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

int ospf_lsa_maxage_walker (struct thread *);

void ospf_external_lsa_refresh_default (struct ospf *);

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

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

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

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

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

struct in_addr ospf_get_nssa_ip (struct ospf_area *);
int ospf_translated_nssa_compare (struct ospf_lsa *, struct ospf_lsa *);
struct ospf_lsa *ospf_translated_nssa_refresh (struct ospf *, struct ospf_lsa *,
                                   struct ospf_lsa *);
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
	26	/* OSPF LSA Range definition. */
	27	#define OSPF_MIN_LSA 1 /* begin range here */
	28	#if defined (HAVE_OPAQUE_LSA)
	29	#define OSPF_MAX_LSA 12
718e3744	30	#else
beebba75	31	#define OSPF_MAX_LSA 8
718e3744	32	#endif
	33
	34	/* OSPF LSA Type definition. */
	35	#define OSPF_UNKNOWN_LSA 0
	36	#define OSPF_ROUTER_LSA 1
	37	#define OSPF_NETWORK_LSA 2
	38	#define OSPF_SUMMARY_LSA 3
	39	#define OSPF_ASBR_SUMMARY_LSA 4
	40	#define OSPF_AS_EXTERNAL_LSA 5
	41	#define OSPF_GROUP_MEMBER_LSA 6 /* Not supported. */
	42	#define OSPF_AS_NSSA_LSA 7
	43	#define OSPF_EXTERNAL_ATTRIBUTES_LSA 8 /* Not supported. */
	44	#define OSPF_OPAQUE_LINK_LSA 9
	45	#define OSPF_OPAQUE_AREA_LSA 10
	46	#define OSPF_OPAQUE_AS_LSA 11
	47
6c835671	48	#define OSPF_LSA_HEADER_SIZE 20U
6c835671	49	#define OSPF_MAX_LSA_SIZE 1500U
718e3744	50
	51	/* AS-external-LSA refresh method. */
	52	#define LSA_REFRESH_IF_CHANGED 0
	53	#define LSA_REFRESH_FORCE 1
	54
	55	/* OSPF LSA header. */
	56	struct lsa_header
	57	{
	58	u_int16_t ls_age;
	59	u_char options;
	60	u_char type;
	61	struct in_addr id;
	62	struct in_addr adv_router;
6c835671	63	u_int32_t ls_seqnum;
718e3744	64	u_int16_t checksum;
	65	u_int16_t length;
	66	};
	67
	68	/* OSPF LSA. */
	69	struct ospf_lsa
	70	{
	71	/* LSA origination flag. */
	72	u_char flags;
	73	#define OSPF_LSA_SELF 0x01
	74	#define OSPF_LSA_SELF_CHECKED 0x02
	75	#define OSPF_LSA_RECEIVED 0x04
	76	#define OSPF_LSA_APPROVED 0x08
	77	#define OSPF_LSA_DISCARD 0x10
718e3744	78	#define OSPF_LSA_LOCAL_XLT 0x20
7ddf1d6e	79	#define OSPF_LSA_PREMATURE_AGE 0x40
718e3744	80
	81	/* LSA data. */
	82	struct lsa_header *data;
	83
	84	/* Received time stamp. */
	85	struct timeval tv_recv;
	86
	87	/* Last time it was originated */
	88	struct timeval tv_orig;
	89
	90	/* All of reference count, also lock to remove. */
	91	int lock;
	92
	93	/* References to this LSA in neighbor retransmission lists*/
	94	int retransmit_counter;
	95
	96	/* Area the LSA belongs to, may be NULL if AS-external-LSA. */
	97	struct ospf_area *area;
	98
	99	/* Parent LSDB. */
	100	struct ospf_lsdb *lsdb;
	101
	102	/* Related Route. */
	103	void *route;
	104
	105	/* Refreshement List or Queue */
	106	int refresh_list;
	107
	108	#ifdef HAVE_OPAQUE_LSA
	109	/* For Type-9 Opaque-LSAs, reference to ospf-interface is required. */
	110	struct ospf_interface *oi;
	111	#endif /* HAVE_OPAQUE_LSA */
	112	};
	113
	114	/* OSPF LSA Link Type. */
	115	#define LSA_LINK_TYPE_POINTOPOINT 1
	116	#define LSA_LINK_TYPE_TRANSIT 2
	117	#define LSA_LINK_TYPE_STUB 3
	118	#define LSA_LINK_TYPE_VIRTUALLINK 4
	119
	120	/* OSPF Router LSA Flag. */
	121	#define ROUTER_LSA_BORDER 0x01 /* The router is an ABR */
	122	#define ROUTER_LSA_EXTERNAL 0x02 /* The router is an ASBR */
	123	#define ROUTER_LSA_VIRTUAL 0x04 /* The router has a VL in this area */
0c9491b3	124	#define ROUTER_LSA_NT 0x10 /* The routers always translates Type-7 */
718e3744	125	#define ROUTER_LSA_SHORTCUT 0x20 /* Shortcut-ABR specific flag */
	126
	127	#define IS_ROUTER_LSA_VIRTUAL(x) ((x)->flags & ROUTER_LSA_VIRTUAL)
	128	#define IS_ROUTER_LSA_EXTERNAL(x) ((x)->flags & ROUTER_LSA_EXTERNAL)
	129	#define IS_ROUTER_LSA_BORDER(x) ((x)->flags & ROUTER_LSA_BORDER)
	130	#define IS_ROUTER_LSA_SHORTCUT(x) ((x)->flags & ROUTER_LSA_SHORTCUT)
0c9491b3	131	#define IS_ROUTER_LSA_NT(x) ((x)->flags & ROUTER_LSA_NT)
718e3744	132
	133	/* OSPF Router-LSA Link information. */
	134	struct router_lsa_link
	135	{
	136	struct in_addr link_id;
	137	struct in_addr link_data;
	138	struct
	139	{
	140	u_char type;
	141	u_char tos_count;
	142	u_int16_t metric;
	143	} m[1];
	144	};
	145
	146	/* OSPF Router-LSAs structure. */
	147	struct router_lsa
	148	{
	149	struct lsa_header header;
	150	u_char flags;
	151	u_char zero;
	152	u_int16_t links;
	153	struct
	154	{
	155	struct in_addr link_id;
	156	struct in_addr link_data;
	157	u_char type;
	158	u_char tos;
	159	u_int16_t metric;
	160	} link[1];
	161	};
	162
	163	/* OSPF Network-LSAs structure. */
	164	struct network_lsa
	165	{
	166	struct lsa_header header;
	167	struct in_addr mask;
	168	struct in_addr routers[1];
	169	};
	170
	171	/* OSPF Summary-LSAs structure. */
	172	struct summary_lsa
	173	{
	174	struct lsa_header header;
	175	struct in_addr mask;
	176	u_char tos;
	177	u_char metric[3];
	178	};
	179
	180	/* OSPF AS-external-LSAs structure. */
	181	struct as_external_lsa
	182	{
	183	struct lsa_header header;
	184	struct in_addr mask;
	185	struct
	186	{
	187	u_char tos;
	188	u_char metric[3];
	189	struct in_addr fwd_addr;
	190	u_int32_t route_tag;
	191	} e[1];
	192	};
	193
	194	#ifdef HAVE_OPAQUE_LSA
	195	#include "ospfd/ospf_opaque.h"
196	#endif /* HAVE_OPAQUE_LSA */
197
198	/* Macros. */
199	#define GET_METRIC(x) get_metric(x)
200	#define IS_EXTERNAL_METRIC(x) ((x) & 0x80)
201
202	#define GET_AGE(x) (ntohs ((x)->data->ls_age) + time (NULL) - (x)->tv_recv)
203	#define LS_AGE(x) (OSPF_LSA_MAXAGE < get_age(x) ? \
204	OSPF_LSA_MAXAGE : get_age(x))
205	#define IS_LSA_SELF(L) (CHECK_FLAG ((L)->flags, OSPF_LSA_SELF))
206	#define IS_LSA_MAXAGE(L) (LS_AGE ((L)) == OSPF_LSA_MAXAGE)
207
718e3744	208	#define OSPF_LSA_UPDATE_DELAY 2
	209
	210	#define OSPF_LSA_UPDATE_TIMER_ON(T,F) \
	211	if (!(T)) \
	212	(T) = thread_add_timer (master, (F), 0, 2)
	213
	214	struct ospf_route;
	215	struct ospf_lsdb;
	216
	217	/* Prototypes. */
	218	struct timeval tv_adjust (struct timeval);
	219	int tv_ceil (struct timeval);
	220	int tv_floor (struct timeval);
	221	struct timeval int2tv (int);
	222	struct timeval tv_add (struct timeval, struct timeval);
	223	struct timeval tv_sub (struct timeval, struct timeval);
	224	int tv_cmp (struct timeval, struct timeval);
	225
	226	int get_age (struct ospf_lsa *);
	227	u_int16_t ospf_lsa_checksum (struct lsa_header *);
	228
	229	struct stream;
68980084	230	const char dump_lsa_key (struct ospf_lsa );
	231	u_int32_t lsa_seqnum_increment (struct ospf_lsa *);
	232	void lsa_header_set (struct stream *, u_char, u_char, struct in_addr,
	233	struct in_addr);
	234	struct ospf_neighbor ospf_nbr_lookup_ptop (struct ospf_interface );
718e3744	235
	236	/* Prototype for LSA primitive. */
	237	struct ospf_lsa *ospf_lsa_new ();
	238	struct ospf_lsa *ospf_lsa_dup ();
68980084	239	void ospf_lsa_free (struct ospf_lsa *);
718e3744	240	struct ospf_lsa ospf_lsa_lock (struct ospf_lsa );
	241	void ospf_lsa_unlock (struct ospf_lsa *);
	242	void ospf_lsa_discard (struct ospf_lsa *);
	243
	244	struct lsa_header *ospf_lsa_data_new (size_t);
	245	struct lsa_header ospf_lsa_data_dup (struct lsa_header );
	246	void ospf_lsa_data_free (struct lsa_header *);
	247
	248	/* Prototype for various LSAs */
	249	struct ospf_lsa ospf_router_lsa_originate (struct ospf_area );
	250	int ospf_router_lsa_update_timer (struct thread *);
	251	void ospf_router_lsa_timer_add (struct ospf_area *);
	252
	253	int ospf_network_lsa_refresh (struct ospf_lsa , struct ospf_interface );
	254	void ospf_network_lsa_timer_add (struct ospf_interface *);
	255
	256	struct ospf_lsa ospf_summary_lsa_originate (struct prefix_ipv4 , u_int32_t,
	257	struct ospf_area *);
	258	struct ospf_lsa ospf_summary_asbr_lsa_originate (struct prefix_ipv4 ,
	259	u_int32_t,
	260	struct ospf_area *);
68980084	261	struct ospf_lsa ospf_summary_lsa_refresh (struct ospf , struct ospf_lsa *);
68980084	262	struct ospf_lsa ospf_summary_asbr_lsa_refresh (struct ospf , struct ospf_lsa *);
718e3744	263
68980084	264	struct ospf_lsa ospf_lsa_install (struct ospf ,
68980084	265	struct ospf_interface , struct ospf_lsa );
718e3744	266
645878f1	267	void ospf_nssa_lsa_flush (struct ospf ospf, struct prefix_ipv4 p);
68980084	268	void ospf_external_lsa_flush (struct ospf , u_char, struct prefix_ipv4 ,
718e3744	269	unsigned int, struct in_addr);
718e3744	270
68980084	271	struct in_addr ospf_get_ip_from_ifp (struct ospf_interface *);
718e3744	272
68980084	273	struct ospf_lsa ospf_external_lsa_originate (struct ospf , struct external_info *);
718e3744	274	int ospf_external_lsa_originate_timer (struct thread *);
	275	struct ospf_lsa ospf_lsa_lookup (struct ospf_area , u_int32_t,
	276	struct in_addr, struct in_addr);
d4a53d58	277	struct ospf_lsa ospf_lsa_lookup_by_id (struct ospf_area ,
	278	u_int32_t,
	279	struct in_addr);
718e3744	280	struct ospf_lsa ospf_lsa_lookup_by_header (struct ospf_area ,
	281	struct lsa_header *);
	282	int ospf_lsa_more_recent (struct ospf_lsa , struct ospf_lsa );
	283	int ospf_lsa_different (struct ospf_lsa , struct ospf_lsa );
68980084	284	void ospf_flush_self_originated_lsas_now (struct ospf *);
718e3744	285
68980084	286	int ospf_lsa_is_self_originated (struct ospf , struct ospf_lsa );
718e3744	287
68980084	288	struct ospf_lsa ospf_lsa_lookup_by_prefix (struct ospf_lsdb , u_char,
	289	struct prefix_ipv4 *,
	290	struct in_addr);
718e3744	291
68980084	292	void ospf_lsa_maxage (struct ospf , struct ospf_lsa );
718e3744	293	u_int32_t get_metric (u_char *);
	294
	295	int ospf_lsa_maxage_walker (struct thread *);
	296
68980084	297	void ospf_external_lsa_refresh_default (struct ospf *);
718e3744	298
68980084	299	void ospf_external_lsa_refresh_type (struct ospf *, u_char, int);
	300	void ospf_external_lsa_refresh (struct ospf , struct ospf_lsa ,
	301	struct external_info *, int);
	302	struct in_addr ospf_lsa_unique_id (struct ospf , struct ospf_lsdb , u_char,
718e3744	303	struct prefix_ipv4 *);
	304	void ospf_schedule_lsa_flood_area (struct ospf_area , struct ospf_lsa );
	305	void ospf_schedule_lsa_flush_area (struct ospf_area , struct ospf_lsa );
	306
	307	void ospf_refresher_register_lsa (struct ospf , struct ospf_lsa );
	308	void ospf_refresher_unregister_lsa (struct ospf , struct ospf_lsa );
	309	int ospf_lsa_refresh_walker (struct thread *);
	310
68980084	311	void ospf_lsa_maxage_delete (struct ospf , struct ospf_lsa );
718e3744	312
68980084	313	void ospf_discard_from_db (struct ospf , struct ospf_lsdb , struct ospf_lsa*);
718e3744	314	int is_prefix_default (struct prefix_ipv4 *);
718e3744	315
68980084	316	int metric_type (struct ospf *, u_char);
	317	int metric_value (struct ospf *, u_char);
	318
68980084	319	struct in_addr ospf_get_nssa_ip (struct ospf_area *);
d4a53d58	320	int ospf_translated_nssa_compare (struct ospf_lsa , struct ospf_lsa );
	321	struct ospf_lsa ospf_translated_nssa_refresh (struct ospf , struct ospf_lsa *,
	322	struct ospf_lsa *);
	323	struct ospf_lsa ospf_translated_nssa_originate (struct ospf , struct ospf_lsa *);
f2c80652	324
718e3744	325	#endif /* _ZEBRA_OSPF_LSA_H */