[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 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 _ZEBRA_OSPF_LSA_H
#define _ZEBRA_OSPF_LSA_H

#include "stream.h"

/* OSPF LSA Range definition. */
#define OSPF_MIN_LSA		1  /* begin range here */
#define OSPF_MAX_LSA           12

/* 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_ROUTER_LSA_LINK_SIZE    12U
#define OSPF_ROUTER_LSA_TOS_SIZE      4U
#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
#define OSPF_LSA_IN_MAXAGE	  0x80

  /* 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;
  
  /* For Type-9 Opaque-LSAs */
  struct ospf_interface *oi;
};

/* 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. */
#define OSPF_ROUTER_LSA_MIN_SIZE                   4U /* w/0 link descriptors */
/* There is an edge case, when number of links in a Router-LSA may be 0 without
   breaking the specification. A router, which has no other links to backbone
   area besides one virtual link, will not put any VL descriptor blocks into
   the Router-LSA generated for area 0 until a full adjacency over the VL is
   reached (RFC2328 12.4.1.3). In this case the Router-LSA initially received
   by the other end of the VL will have 0 link descriptor blocks, but soon will
   be replaced with the next revision having 1 descriptor block. */
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. */
#define OSPF_NETWORK_LSA_MIN_SIZE                  8U /* w/1 router-ID */
struct network_lsa
{
  struct lsa_header header;
  struct in_addr mask;
  struct in_addr routers[1];
};

/* OSPF Summary-LSAs structure. */
#define OSPF_SUMMARY_LSA_MIN_SIZE                  8U /* w/1 TOS metric block */
struct summary_lsa
{
  struct lsa_header header;
  struct in_addr mask;
  u_char tos;
  u_char metric[3];
};

/* OSPF AS-external-LSAs structure. */
#define OSPF_AS_EXTERNAL_LSA_MIN_SIZE             16U /* w/1 TOS forwarding block */
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];
};

#include "ospfd/ospf_opaque.h"

/* 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 int2tv (int);
extern struct timeval msec2tv (int);

extern int get_age (struct ospf_lsa *);
extern u_int16_t ospf_lsa_checksum (struct lsa_header *);
extern int ospf_lsa_checksum_valid (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 *);
extern int ospf_check_nbr_status (struct ospf *);

/* 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 int ospf_lsa_flush_schedule (struct ospf *, 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 (struct ospf *);
extern int ospf_router_lsa_update_area (struct ospf_area *);

extern void ospf_network_lsa_update (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_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 *,
			             ifindex_t /* , 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 int ospf_default_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 struct ospf_lsa *ospf_lsa_refresh (struct ospf *, struct ospf_lsa *);
 
extern void ospf_external_lsa_refresh_default (struct ospf *);

extern void ospf_external_lsa_refresh_type (struct ospf *, u_char, u_short, int);
extern struct ospf_lsa *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, u_short);
extern int metric_value (struct ospf *, u_char, u_short);

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	*
896014f4 DL	17	* You should have received a copy of the GNU General Public License along
	18	* with this program; see the file COPYING; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
718e3744	20	*/
	21
	22	#ifndef _ZEBRA_OSPF_LSA_H
	23	#define _ZEBRA_OSPF_LSA_H
	24
4dadc291	25	#include "stream.h"
4dadc291	26
718e3744	27	/* OSPF LSA Range definition. */
718e3744	28	#define OSPF_MIN_LSA 1 /* begin range here */
718e3744	29	#define OSPF_MAX_LSA 12
718e3744	30
	31	/* OSPF LSA Type definition. */
	32	#define OSPF_UNKNOWN_LSA 0
	33	#define OSPF_ROUTER_LSA 1
	34	#define OSPF_NETWORK_LSA 2
	35	#define OSPF_SUMMARY_LSA 3
	36	#define OSPF_ASBR_SUMMARY_LSA 4
	37	#define OSPF_AS_EXTERNAL_LSA 5
	38	#define OSPF_GROUP_MEMBER_LSA 6 /* Not supported. */
	39	#define OSPF_AS_NSSA_LSA 7
	40	#define OSPF_EXTERNAL_ATTRIBUTES_LSA 8 /* Not supported. */
	41	#define OSPF_OPAQUE_LINK_LSA 9
	42	#define OSPF_OPAQUE_AREA_LSA 10
	43	#define OSPF_OPAQUE_AS_LSA 11
	44
779adb01	45	#define OSPF_LSA_HEADER_SIZE 20U
779adb01	46	#define OSPF_ROUTER_LSA_LINK_SIZE 12U
05b7709d	47	#define OSPF_ROUTER_LSA_TOS_SIZE 4U
779adb01	48	#define OSPF_MAX_LSA_SIZE 1500U
718e3744	49
	50	/* AS-external-LSA refresh method. */
	51	#define LSA_REFRESH_IF_CHANGED 0
	52	#define LSA_REFRESH_FORCE 1
	53
	54	/* OSPF LSA header. */
	55	struct lsa_header
	56	{
	57	u_int16_t ls_age;
	58	u_char options;
	59	u_char type;
	60	struct in_addr id;
	61	struct in_addr adv_router;
6c835671	62	u_int32_t ls_seqnum;
718e3744	63	u_int16_t checksum;
	64	u_int16_t length;
	65	};
	66
	67	/* OSPF LSA. */
	68	struct ospf_lsa
	69	{
	70	/* LSA origination flag. */
	71	u_char flags;
	72	#define OSPF_LSA_SELF 0x01
	73	#define OSPF_LSA_SELF_CHECKED 0x02
	74	#define OSPF_LSA_RECEIVED 0x04
	75	#define OSPF_LSA_APPROVED 0x08
	76	#define OSPF_LSA_DISCARD 0x10
718e3744	77	#define OSPF_LSA_LOCAL_XLT 0x20
7ddf1d6e	78	#define OSPF_LSA_PREMATURE_AGE 0x40
3106a032	79	#define OSPF_LSA_IN_MAXAGE 0x80
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
462f20d5	93	/* Flags for the SPF calculation. */
	94	int stat;
	95	#define LSA_SPF_NOT_EXPLORED -1
	96	#define LSA_SPF_IN_SPFTREE -2
	97	/* If stat >= 0, stat is LSA position in candidates heap. */
	98
718e3744	99	/* References to this LSA in neighbor retransmission lists*/
	100	int retransmit_counter;
	101
	102	/* Area the LSA belongs to, may be NULL if AS-external-LSA. */
	103	struct ospf_area *area;
	104
	105	/* Parent LSDB. */
	106	struct ospf_lsdb *lsdb;
	107
	108	/* Related Route. */
	109	void *route;
	110
	111	/* Refreshement List or Queue */
	112	int refresh_list;
d71ea652 PJ	113
	114	/* For Type-9 Opaque-LSAs */
	115	struct ospf_interface *oi;
718e3744	116	};
	117
	118	/* OSPF LSA Link Type. */
	119	#define LSA_LINK_TYPE_POINTOPOINT 1
	120	#define LSA_LINK_TYPE_TRANSIT 2
	121	#define LSA_LINK_TYPE_STUB 3
	122	#define LSA_LINK_TYPE_VIRTUALLINK 4
	123
	124	/* OSPF Router LSA Flag. */
	125	#define ROUTER_LSA_BORDER 0x01 /* The router is an ABR */
	126	#define ROUTER_LSA_EXTERNAL 0x02 /* The router is an ASBR */
	127	#define ROUTER_LSA_VIRTUAL 0x04 /* The router has a VL in this area */
0c9491b3	128	#define ROUTER_LSA_NT 0x10 /* The routers always translates Type-7 */
718e3744	129	#define ROUTER_LSA_SHORTCUT 0x20 /* Shortcut-ABR specific flag */
	130
	131	#define IS_ROUTER_LSA_VIRTUAL(x) ((x)->flags & ROUTER_LSA_VIRTUAL)
	132	#define IS_ROUTER_LSA_EXTERNAL(x) ((x)->flags & ROUTER_LSA_EXTERNAL)
	133	#define IS_ROUTER_LSA_BORDER(x) ((x)->flags & ROUTER_LSA_BORDER)
	134	#define IS_ROUTER_LSA_SHORTCUT(x) ((x)->flags & ROUTER_LSA_SHORTCUT)
0c9491b3	135	#define IS_ROUTER_LSA_NT(x) ((x)->flags & ROUTER_LSA_NT)
718e3744	136
	137	/* OSPF Router-LSA Link information. */
	138	struct router_lsa_link
	139	{
	140	struct in_addr link_id;
	141	struct in_addr link_data;
	142	struct
	143	{
	144	u_char type;
	145	u_char tos_count;
	146	u_int16_t metric;
	147	} m[1];
	148	};
	149
	150	/* OSPF Router-LSAs structure. */
a25a44db DO	151	#define OSPF_ROUTER_LSA_MIN_SIZE 4U /* w/0 link descriptors */
	152	/* There is an edge case, when number of links in a Router-LSA may be 0 without
	153	breaking the specification. A router, which has no other links to backbone
	154	area besides one virtual link, will not put any VL descriptor blocks into
	155	the Router-LSA generated for area 0 until a full adjacency over the VL is
	156	reached (RFC2328 12.4.1.3). In this case the Router-LSA initially received
	157	by the other end of the VL will have 0 link descriptor blocks, but soon will
	158	be replaced with the next revision having 1 descriptor block. */
718e3744	159	struct router_lsa
	160	{
	161	struct lsa_header header;
	162	u_char flags;
	163	u_char zero;
	164	u_int16_t links;
	165	struct
	166	{
	167	struct in_addr link_id;
	168	struct in_addr link_data;
	169	u_char type;
	170	u_char tos;
	171	u_int16_t metric;
	172	} link[1];
	173	};
	174
	175	/* OSPF Network-LSAs structure. */
4e31de79	176	#define OSPF_NETWORK_LSA_MIN_SIZE 8U /* w/1 router-ID */
718e3744	177	struct network_lsa
	178	{
	179	struct lsa_header header;
	180	struct in_addr mask;
	181	struct in_addr routers[1];
	182	};
	183
	184	/* OSPF Summary-LSAs structure. */
4e31de79	185	#define OSPF_SUMMARY_LSA_MIN_SIZE 8U /* w/1 TOS metric block */
718e3744	186	struct summary_lsa
	187	{
	188	struct lsa_header header;
	189	struct in_addr mask;
	190	u_char tos;
	191	u_char metric[3];
	192	};
	193
	194	/* OSPF AS-external-LSAs structure. */
4e31de79	195	#define OSPF_AS_EXTERNAL_LSA_MIN_SIZE 16U /* w/1 TOS forwarding block */
718e3744	196	struct as_external_lsa
	197	{
	198	struct lsa_header header;
	199	struct in_addr mask;
	200	struct
	201	{
	202	u_char tos;
	203	u_char metric[3];
	204	struct in_addr fwd_addr;
	205	u_int32_t route_tag;
	206	} e[1];
	207	};
	208
718e3744	209	#include "ospfd/ospf_opaque.h"
718e3744	210
	211	/* Macros. */
	212	#define GET_METRIC(x) get_metric(x)
	213	#define IS_EXTERNAL_METRIC(x) ((x) & 0x80)
	214
	215	#define GET_AGE(x) (ntohs ((x)->data->ls_age) + time (NULL) - (x)->tv_recv)
	216	#define LS_AGE(x) (OSPF_LSA_MAXAGE < get_age(x) ? \
	217	OSPF_LSA_MAXAGE : get_age(x))
	218	#define IS_LSA_SELF(L) (CHECK_FLAG ((L)->flags, OSPF_LSA_SELF))
	219	#define IS_LSA_MAXAGE(L) (LS_AGE ((L)) == OSPF_LSA_MAXAGE)
	220
718e3744	221	#define OSPF_LSA_UPDATE_DELAY 2
	222
	223	#define OSPF_LSA_UPDATE_TIMER_ON(T,F) \
	224	if (!(T)) \
	225	(T) = thread_add_timer (master, (F), 0, 2)
	226
718e3744	227	/* Prototypes. */
4dadc291	228	/* XXX: Eek, time functions, similar are in lib/thread.c */
4dadc291	229	extern struct timeval int2tv (int);
16e56a14	230	extern struct timeval msec2tv (int);
4dadc291	231
	232	extern int get_age (struct ospf_lsa *);
	233	extern u_int16_t ospf_lsa_checksum (struct lsa_header *);
0798cee3	234	extern int ospf_lsa_checksum_valid (struct lsa_header *);
4dadc291	235	extern int ospf_lsa_refresh_delay (struct ospf_lsa *);
	236
	237	extern const char dump_lsa_key (struct ospf_lsa );
	238	extern u_int32_t lsa_seqnum_increment (struct ospf_lsa *);
	239	extern void lsa_header_set (struct stream *, u_char, u_char, struct in_addr,
68980084	240	struct in_addr);
4dadc291	241	extern struct ospf_neighbor ospf_nbr_lookup_ptop (struct ospf_interface );
4c14b7f6	242	extern int ospf_check_nbr_status (struct ospf *);
718e3744	243
718e3744	244	/* Prototype for LSA primitive. */
4dadc291	245	extern struct ospf_lsa *ospf_lsa_new (void);
	246	extern struct ospf_lsa ospf_lsa_dup (struct ospf_lsa );
	247	extern void ospf_lsa_free (struct ospf_lsa *);
	248	extern struct ospf_lsa ospf_lsa_lock (struct ospf_lsa );
1fe6ed38	249	extern void ospf_lsa_unlock (struct ospf_lsa **);
4dadc291	250	extern void ospf_lsa_discard (struct ospf_lsa *);
2c19a6ec	251	extern int ospf_lsa_flush_schedule (struct ospf , struct ospf_lsa );
4dadc291	252	extern struct lsa_header *ospf_lsa_data_new (size_t);
	253	extern struct lsa_header ospf_lsa_data_dup (struct lsa_header );
	254	extern void ospf_lsa_data_free (struct lsa_header *);
718e3744	255
718e3744	256	/* Prototype for various LSAs */
c363d386 PJ	257	extern int ospf_router_lsa_update (struct ospf *);
c363d386 PJ	258	extern int ospf_router_lsa_update_area (struct ospf_area *);
718e3744	259
c363d386	260	extern void ospf_network_lsa_update (struct ospf_interface *);
718e3744	261
4dadc291	262	extern struct ospf_lsa ospf_summary_lsa_originate (struct prefix_ipv4 , u_int32_t,
718e3744	263	struct ospf_area *);
4dadc291	264	extern struct ospf_lsa ospf_summary_asbr_lsa_originate (struct prefix_ipv4 ,
718e3744	265	u_int32_t,
718e3744	266	struct ospf_area *);
718e3744	267
4dadc291	268	extern struct ospf_lsa ospf_lsa_install (struct ospf ,
68980084	269	struct ospf_interface , struct ospf_lsa );
718e3744	270
4dadc291	271	extern void ospf_nssa_lsa_flush (struct ospf ospf, struct prefix_ipv4 p);
4dadc291	272	extern void ospf_external_lsa_flush (struct ospf , u_char, struct prefix_ipv4 ,
b892f1dd	273	ifindex_t /* , struct in_addr nexthop */);
718e3744	274
4dadc291	275	extern struct in_addr ospf_get_ip_from_ifp (struct ospf_interface *);
718e3744	276
4dadc291	277	extern struct ospf_lsa ospf_external_lsa_originate (struct ospf , struct external_info *);
4dadc291	278	extern int ospf_external_lsa_originate_timer (struct thread *);
8216f53b	279	extern int ospf_default_originate_timer (struct thread *);
4dadc291	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 *);
c363d386 PJ	301	extern struct ospf_lsa ospf_lsa_refresh (struct ospf , struct ospf_lsa *);
c363d386 PJ	302
4dadc291	303	extern void ospf_external_lsa_refresh_default (struct ospf *);
718e3744	304
7c8ff89e	305	extern void ospf_external_lsa_refresh_type (struct ospf *, u_char, u_short, int);
c363d386 PJ	306	extern struct ospf_lsa ospf_external_lsa_refresh (struct ospf ,
	307	struct ospf_lsa *,
	308	struct external_info *,
	309	int);
4dadc291	310	extern struct in_addr ospf_lsa_unique_id (struct ospf , struct ospf_lsdb , u_char,
718e3744	311	struct prefix_ipv4 *);
4dadc291	312	extern void ospf_schedule_lsa_flood_area (struct ospf_area , struct ospf_lsa );
4dadc291	313	extern void ospf_schedule_lsa_flush_area (struct ospf_area , struct ospf_lsa );
718e3744	314
4dadc291	315	extern void ospf_refresher_register_lsa (struct ospf , struct ospf_lsa );
	316	extern void ospf_refresher_unregister_lsa (struct ospf , struct ospf_lsa );
	317	extern int ospf_lsa_refresh_walker (struct thread *);
718e3744	318
4dadc291	319	extern void ospf_lsa_maxage_delete (struct ospf , struct ospf_lsa );
718e3744	320
4dadc291	321	extern void ospf_discard_from_db (struct ospf , struct ospf_lsdb , struct ospf_lsa*);
4dadc291	322	extern int is_prefix_default (struct prefix_ipv4 *);
718e3744	323
7c8ff89e DS	324	extern int metric_type (struct ospf *, u_char, u_short);
7c8ff89e DS	325	extern int metric_value (struct ospf *, u_char, u_short);
68980084	326
4dadc291	327	extern struct in_addr ospf_get_nssa_ip (struct ospf_area *);
	328	extern int ospf_translated_nssa_compare (struct ospf_lsa , struct ospf_lsa );
	329	extern struct ospf_lsa ospf_translated_nssa_refresh (struct ospf , struct ospf_lsa *,
d4a53d58	330	struct ospf_lsa *);
4dadc291	331	extern struct ospf_lsa ospf_translated_nssa_originate (struct ospf , struct ospf_lsa *);
f2c80652	332
718e3744	333	#endif /* _ZEBRA_OSPF_LSA_H */