[mirror_frr.git] / ospfd / ospf_api.h

/*
 * API message handling module for OSPF daemon and client.
 * Copyright (C) 2001, 2002 Ralph Keller
 *
 * 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.
 */


/* This file is used both by the OSPFd and client applications to
   define message formats used for communication. */

#ifndef _OSPF_API_H
#define _OSPF_API_H

#define OSPF_API_VERSION           1

/* MTYPE definition is not reflected to "memory.h". */
#define MTYPE_OSPF_API_MSG      MTYPE_TMP
#define MTYPE_OSPF_API_FIFO     MTYPE_TMP

/* Default API server port to accept connection request from client-side. */
/* This value could be overridden by "ospfapi" entry in "/etc/services". */
#define OSPF_API_SYNC_PORT      2607

/* -----------------------------------------------------------
 * Generic messages 
 * -----------------------------------------------------------
 */

/* Message header structure, fields are in network byte order and
   aligned to four octets. */
struct apimsghdr
{
  u_char version;		/* OSPF API protocol version */
  u_char msgtype;		/* Type of message */
  u_int16_t msglen;		/* Length of message w/o header */
  u_int32_t msgseq;		/* Sequence number */
};

/* Message representation with header and body */
struct msg
{
  struct msg *next;		/* to link into fifo */

  /* Message header */
  struct apimsghdr hdr;

  /* Message body */
  struct stream *s;
};

/* Prototypes for generic messages. */
extern struct msg *msg_new (u_char msgtype, void *msgbody,
		     u_int32_t seqnum, u_int16_t msglen);
extern struct msg *msg_dup (struct msg *msg);
extern void msg_print (struct msg *msg);	/* XXX debug only */
extern void msg_free (struct msg *msg);
struct msg *msg_read (int fd);
extern int msg_write (int fd, struct msg *msg);

/* For requests, the message sequence number is between MIN_SEQ and
   MAX_SEQ. For notifications, the sequence number is 0. */

#define MIN_SEQ          1
#define MAX_SEQ 2147483647

extern void msg_set_seq (struct msg *msg, u_int32_t seqnr);
extern u_int32_t msg_get_seq (struct msg *msg);

/* -----------------------------------------------------------
 * Message fifo queues
 * -----------------------------------------------------------
 */

/* Message queue structure. */
struct msg_fifo
{
  unsigned long count;

  struct msg *head;
  struct msg *tail;
};

/* Prototype for message fifo queues. */
extern struct msg_fifo *msg_fifo_new (void);
extern void msg_fifo_push (struct msg_fifo *, struct msg *msg);
extern struct msg *msg_fifo_pop (struct msg_fifo *fifo);
extern struct msg *msg_fifo_head (struct msg_fifo *fifo);
extern void msg_fifo_flush (struct msg_fifo *fifo);
extern void msg_fifo_free (struct msg_fifo *fifo);

/* -----------------------------------------------------------
 * Specific message type and format definitions
 * -----------------------------------------------------------
 */

/* Messages to OSPF daemon. */
#define MSG_REGISTER_OPAQUETYPE   1
#define MSG_UNREGISTER_OPAQUETYPE 2
#define MSG_REGISTER_EVENT        3
#define MSG_SYNC_LSDB             4
#define MSG_ORIGINATE_REQUEST     5
#define MSG_DELETE_REQUEST        6

/* Messages from OSPF daemon. */
#define MSG_REPLY                10
#define MSG_READY_NOTIFY         11
#define MSG_LSA_UPDATE_NOTIFY    12
#define MSG_LSA_DELETE_NOTIFY    13
#define MSG_NEW_IF               14
#define MSG_DEL_IF               15
#define MSG_ISM_CHANGE           16
#define MSG_NSM_CHANGE           17

struct msg_register_opaque_type
{
  u_char lsatype;
  u_char opaquetype;
  u_char pad[2];		/* padding */
};

struct msg_unregister_opaque_type
{
  u_char lsatype;
  u_char opaquetype;
  u_char pad[2];		/* padding */
};

/* Power2 is needed to convert LSA types into bit positions,
 * see typemask below. Type definition starts at 1, so
 * Power2[0] is not used. */


#ifdef ORIGINAL_CODING
static const u_int16_t
  Power2[] = { 0x0, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80,
  0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000
};
#else
static const u_int16_t
  Power2[] = { 0, (1 << 0), (1 << 1), (1 << 2), (1 << 3), (1 << 4),
  (1 << 5), (1 << 6), (1 << 7), (1 << 8), (1 << 9),
  (1 << 10), (1 << 11), (1 << 12), (1 << 13), (1 << 14),
  (1 << 15)
};
#endif /* ORIGINAL_CODING */

struct lsa_filter_type
{
  u_int16_t typemask;		/* bitmask for selecting LSA types (1..16) */
  u_char origin;		/* selects according to origin. */
#define NON_SELF_ORIGINATED	0
#define	SELF_ORIGINATED  (OSPF_LSA_SELF)
#define	ANY_ORIGIN 2

  u_char num_areas;		/* number of areas in the filter. */
  /* areas, if any, go here. */
};

struct msg_register_event
{
  struct lsa_filter_type filter;
};

struct msg_sync_lsdb
{
  struct lsa_filter_type filter;
};

struct msg_originate_request
{
  /* Used for LSA type 9 otherwise ignored */
  struct in_addr ifaddr;

  /* Used for LSA type 10 otherwise ignored */
  struct in_addr area_id;

  /* LSA header and LSA-specific part */
  struct lsa_header data;
};

struct msg_delete_request
{
  struct in_addr area_id;	/* "0.0.0.0" for AS-external opaque LSAs */
  u_char lsa_type;
  u_char opaque_type;
  u_char pad[2];		/* padding */
  u_int32_t opaque_id;
};

struct msg_reply
{
  signed char errcode;
#define OSPF_API_OK                         0
#define OSPF_API_NOSUCHINTERFACE          (-1)
#define OSPF_API_NOSUCHAREA               (-2)
#define OSPF_API_NOSUCHLSA                (-3)
#define OSPF_API_ILLEGALLSATYPE           (-4)
#define OSPF_API_OPAQUETYPEINUSE          (-5)
#define OSPF_API_OPAQUETYPENOTREGISTERED  (-6)
#define OSPF_API_NOTREADY                 (-7)
#define OSPF_API_NOMEMORY                 (-8)
#define OSPF_API_ERROR                    (-9)
#define OSPF_API_UNDEF                   (-10)
  u_char pad[3];		/* padding to four byte alignment */
};

/* Message to tell client application that it ospf daemon is 
 * ready to accept opaque LSAs for a given interface or area. */

struct msg_ready_notify
{
  u_char lsa_type;
  u_char opaque_type;
  u_char pad[2];		/* padding */
  struct in_addr addr;		/* interface address or area address */
};

/* These messages have a dynamic length depending on the embodied LSA.
   They are aligned to four octets. msg_lsa_change_notify is used for
   both LSA update and LSAs delete. */

struct msg_lsa_change_notify
{
  /* Used for LSA type 9 otherwise ignored */
  struct in_addr ifaddr;
  /* Area ID. Not valid for AS-External and Opaque11 LSAs. */
  struct in_addr area_id;
  u_char is_self_originated;	/* 1 if self originated. */
  u_char pad[3];
  struct lsa_header data;
};

struct msg_new_if
{
  struct in_addr ifaddr;	/* interface IP address */
  struct in_addr area_id;	/* area this interface belongs to */
};

struct msg_del_if
{
  struct in_addr ifaddr;	/* interface IP address */
};

struct msg_ism_change
{
  struct in_addr ifaddr;	/* interface IP address */
  struct in_addr area_id;	/* area this interface belongs to */
  u_char status;		/* interface status (up/down) */
  u_char pad[3];		/* not used */
};

struct msg_nsm_change
{
  struct in_addr ifaddr;	/* attached interface */
  struct in_addr nbraddr;	/* Neighbor interface address */
  struct in_addr router_id;	/* Router ID of neighbor */
  u_char status;		/* NSM status */
  u_char pad[3];
};

/* We make use of a union to define a structure that covers all
   possible API messages. This allows us to find out how much memory
   needs to be reserved for the largest API message. */
struct apimsg
{
  struct apimsghdr hdr;
  union
  {
    struct msg_register_opaque_type register_opaque_type;
    struct msg_register_event register_event;
    struct msg_sync_lsdb sync_lsdb;
    struct msg_originate_request originate_request;
    struct msg_delete_request delete_request;
    struct msg_reply reply;
    struct msg_ready_notify ready_notify;
    struct msg_new_if new_if;
    struct msg_del_if del_if;
    struct msg_ism_change ism_change;
    struct msg_nsm_change nsm_change;
    struct msg_lsa_change_notify lsa_change_notify;
  }
  u;
};

#define OSPF_API_MAX_MSG_SIZE (sizeof(struct apimsg) + OSPF_MAX_LSA_SIZE)

/* -----------------------------------------------------------
 * Prototypes for specific messages
 * -----------------------------------------------------------
 */

/* For debugging only. */
extern void api_opaque_lsa_print (struct lsa_header *data);

/* Messages sent by client */
extern struct msg *new_msg_register_opaque_type (u_int32_t seqnum,
						 u_char ltype, u_char otype);
extern struct msg *new_msg_register_event (u_int32_t seqnum,
					   struct lsa_filter_type *filter);
extern struct msg *new_msg_sync_lsdb (u_int32_t seqnum,
				      struct lsa_filter_type *filter);
extern struct msg *new_msg_originate_request (u_int32_t seqnum,
					      struct in_addr ifaddr,
					      struct in_addr area_id,
					      struct lsa_header *data);
extern struct msg *new_msg_delete_request (u_int32_t seqnum,
					   struct in_addr area_id,
					   u_char lsa_type,
					   u_char opaque_type,
					   u_int32_t opaque_id);

/* Messages sent by OSPF daemon */
extern struct msg *new_msg_reply (u_int32_t seqnum, u_char rc);

extern struct msg *new_msg_ready_notify (u_int32_t seqnr, u_char lsa_type,
					 u_char opaque_type,
					 struct in_addr addr);

extern struct msg *new_msg_new_if (u_int32_t seqnr,
				   struct in_addr ifaddr,
				   struct in_addr area);

extern struct msg *new_msg_del_if (u_int32_t seqnr, struct in_addr ifaddr);

extern struct msg *new_msg_ism_change (u_int32_t seqnr, struct in_addr ifaddr,
				       struct in_addr area, u_char status);

extern struct msg *new_msg_nsm_change (u_int32_t seqnr, struct in_addr ifaddr,
				       struct in_addr nbraddr,
				       struct in_addr router_id,
				       u_char status);

/* msgtype is MSG_LSA_UPDATE_NOTIFY or MSG_LSA_DELETE_NOTIFY */
extern struct msg *new_msg_lsa_change_notify (u_char msgtype,
					      u_int32_t seqnum,
					      struct in_addr ifaddr,
					      struct in_addr area_id,
					      u_char is_self_originated,
					      struct lsa_header *data);

/* string printing functions */
extern const char *ospf_api_errname (int errcode);
extern const char *ospf_api_typename (int msgtype);

#endif /* _OSPF_API_H */
Commit	Line	Data
2d33f157	1	/*
	2	* API message handling module for OSPF daemon and client.
	3	* Copyright (C) 2001, 2002 Ralph Keller
	4	*
	5	* This file is part of GNU Zebra.
	6	*
	7	* GNU Zebra is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published
	9	* by the Free Software Foundation; either version 2, or (at your
	10	* option) any 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
	19	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	20	* Boston, MA 02111-1307, USA.
	21	*/
	22
	23
	24	/* This file is used both by the OSPFd and client applications to
	25	define message formats used for communication. */
	26
	27	#ifndef _OSPF_API_H
	28	#define _OSPF_API_H
	29
	30	#define OSPF_API_VERSION 1
	31
	32	/* MTYPE definition is not reflected to "memory.h". */
	33	#define MTYPE_OSPF_API_MSG MTYPE_TMP
	34	#define MTYPE_OSPF_API_FIFO MTYPE_TMP
	35
	36	/* Default API server port to accept connection request from client-side. */
	37	/* This value could be overridden by "ospfapi" entry in "/etc/services". */
	38	#define OSPF_API_SYNC_PORT 2607
	39
	40	/* -----------------------------------------------------------
	41	* Generic messages
	42	* -----------------------------------------------------------
	43	*/
	44
	45	/* Message header structure, fields are in network byte order and
	46	aligned to four octets. */
	47	struct apimsghdr
	48	{
	49	u_char version; /* OSPF API protocol version */
	50	u_char msgtype; /* Type of message */
	51	u_int16_t msglen; /* Length of message w/o header */
	52	u_int32_t msgseq; /* Sequence number */
	53	};
	54
	55	/* Message representation with header and body */
	56	struct msg
	57	{
	58	struct msg next; / to link into fifo */
	59
	60	/* Message header */
	61	struct apimsghdr hdr;
	62
	63	/* Message body */
	64	struct stream *s;
65	};
66
67	/* Prototypes for generic messages. */
4dadc291	68	extern struct msg msg_new (u_char msgtype, void msgbody,
2d33f157	69	u_int32_t seqnum, u_int16_t msglen);
4dadc291	70	extern struct msg msg_dup (struct msg msg);
	71	extern void msg_print (struct msg msg); / XXX debug only */
	72	extern void msg_free (struct msg *msg);
2d33f157	73	struct msg *msg_read (int fd);
4dadc291	74	extern int msg_write (int fd, struct msg *msg);
2d33f157	75
	76	/* For requests, the message sequence number is between MIN_SEQ and
	77	MAX_SEQ. For notifications, the sequence number is 0. */
	78
	79	#define MIN_SEQ 1
	80	#define MAX_SEQ 2147483647
	81
4dadc291	82	extern void msg_set_seq (struct msg *msg, u_int32_t seqnr);
4dadc291	83	extern u_int32_t msg_get_seq (struct msg *msg);
2d33f157	84
	85	/* -----------------------------------------------------------
	86	* Message fifo queues
	87	* -----------------------------------------------------------
	88	*/
	89
	90	/* Message queue structure. */
	91	struct msg_fifo
	92	{
	93	unsigned long count;
	94
	95	struct msg *head;
	96	struct msg *tail;
	97	};
	98
	99	/* Prototype for message fifo queues. */
4dadc291	100	extern struct msg_fifo *msg_fifo_new (void);
	101	extern void msg_fifo_push (struct msg_fifo , struct msg msg);
	102	extern struct msg msg_fifo_pop (struct msg_fifo fifo);
	103	extern struct msg msg_fifo_head (struct msg_fifo fifo);
	104	extern void msg_fifo_flush (struct msg_fifo *fifo);
	105	extern void msg_fifo_free (struct msg_fifo *fifo);
2d33f157	106
	107	/* -----------------------------------------------------------
	108	* Specific message type and format definitions
	109	* -----------------------------------------------------------
	110	*/
	111
	112	/* Messages to OSPF daemon. */
	113	#define MSG_REGISTER_OPAQUETYPE 1
	114	#define MSG_UNREGISTER_OPAQUETYPE 2
	115	#define MSG_REGISTER_EVENT 3
	116	#define MSG_SYNC_LSDB 4
	117	#define MSG_ORIGINATE_REQUEST 5
	118	#define MSG_DELETE_REQUEST 6
	119
	120	/* Messages from OSPF daemon. */
	121	#define MSG_REPLY 10
	122	#define MSG_READY_NOTIFY 11
	123	#define MSG_LSA_UPDATE_NOTIFY 12
	124	#define MSG_LSA_DELETE_NOTIFY 13
	125	#define MSG_NEW_IF 14
	126	#define MSG_DEL_IF 15
	127	#define MSG_ISM_CHANGE 16
	128	#define MSG_NSM_CHANGE 17
	129
	130	struct msg_register_opaque_type
	131	{
	132	u_char lsatype;
	133	u_char opaquetype;
	134	u_char pad[2]; /* padding */
	135	};
	136
	137	struct msg_unregister_opaque_type
	138	{
	139	u_char lsatype;
	140	u_char opaquetype;
	141	u_char pad[2]; /* padding */
	142	};
	143
	144	/* Power2 is needed to convert LSA types into bit positions,
	145	* see typemask below. Type definition starts at 1, so
	146	* Power2[0] is not used. */
	147
	148
	149	#ifdef ORIGINAL_CODING
	150	static const u_int16_t
	151	Power2[] = { 0x0, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80,
	152	0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000
	153	};
	154	#else
	155	static const u_int16_t
	156	Power2[] = { 0, (1 << 0), (1 << 1), (1 << 2), (1 << 3), (1 << 4),
	157	(1 << 5), (1 << 6), (1 << 7), (1 << 8), (1 << 9),
	158	(1 << 10), (1 << 11), (1 << 12), (1 << 13), (1 << 14),
	159	(1 << 15)
	160	};
	161	#endif /* ORIGINAL_CODING */
	162
	163	struct lsa_filter_type
	164	{
	165	u_int16_t typemask; /* bitmask for selecting LSA types (1..16) */
	166	u_char origin; /* selects according to origin. */
	167	#define NON_SELF_ORIGINATED 0
	168	#define SELF_ORIGINATED (OSPF_LSA_SELF)
	169	#define ANY_ORIGIN 2
170
171	u_char num_areas; /* number of areas in the filter. */
172	/* areas, if any, go here. */
173	};
174
175	struct msg_register_event
176	{
177	struct lsa_filter_type filter;
178	};
179
180	struct msg_sync_lsdb
181	{
182	struct lsa_filter_type filter;
183	};
184
185	struct msg_originate_request
186	{
187	/* Used for LSA type 9 otherwise ignored */
188	struct in_addr ifaddr;
189
190	/* Used for LSA type 10 otherwise ignored */
191	struct in_addr area_id;
192
193	/* LSA header and LSA-specific part */
194	struct lsa_header data;
195	};
196
197	struct msg_delete_request
198	{
199	struct in_addr area_id; /* "0.0.0.0" for AS-external opaque LSAs */
200	u_char lsa_type;
201	u_char opaque_type;
202	u_char pad[2]; /* padding */
203	u_int32_t opaque_id;
204	};
205
206	struct msg_reply
207	{
306541b3	208	signed char errcode;
2d33f157	209	#define OSPF_API_OK 0
	210	#define OSPF_API_NOSUCHINTERFACE (-1)
	211	#define OSPF_API_NOSUCHAREA (-2)
	212	#define OSPF_API_NOSUCHLSA (-3)
	213	#define OSPF_API_ILLEGALLSATYPE (-4)
	214	#define OSPF_API_OPAQUETYPEINUSE (-5)
	215	#define OSPF_API_OPAQUETYPENOTREGISTERED (-6)
	216	#define OSPF_API_NOTREADY (-7)
	217	#define OSPF_API_NOMEMORY (-8)
	218	#define OSPF_API_ERROR (-9)
	219	#define OSPF_API_UNDEF (-10)
	220	u_char pad[3]; /* padding to four byte alignment */
	221	};
	222
	223	/* Message to tell client application that it ospf daemon is
	224	* ready to accept opaque LSAs for a given interface or area. */
	225
	226	struct msg_ready_notify
	227	{
	228	u_char lsa_type;
	229	u_char opaque_type;
	230	u_char pad[2]; /* padding */
	231	struct in_addr addr; /* interface address or area address */
	232	};
	233
	234	/* These messages have a dynamic length depending on the embodied LSA.
	235	They are aligned to four octets. msg_lsa_change_notify is used for
	236	both LSA update and LSAs delete. */
	237
	238	struct msg_lsa_change_notify
	239	{
	240	/* Used for LSA type 9 otherwise ignored */
	241	struct in_addr ifaddr;
	242	/* Area ID. Not valid for AS-External and Opaque11 LSAs. */
	243	struct in_addr area_id;
	244	u_char is_self_originated; /* 1 if self originated. */
	245	u_char pad[3];
	246	struct lsa_header data;
	247	};
	248
	249	struct msg_new_if
	250	{
	251	struct in_addr ifaddr; /* interface IP address */
	252	struct in_addr area_id; /* area this interface belongs to */
	253	};
	254
	255	struct msg_del_if
	256	{
	257	struct in_addr ifaddr; /* interface IP address */
	258	};
	259
	260	struct msg_ism_change
	261	{
	262	struct in_addr ifaddr; /* interface IP address */
	263	struct in_addr area_id; /* area this interface belongs to */
	264	u_char status; /* interface status (up/down) */
	265	u_char pad[3]; /* not used */
	266	};
	267
	268	struct msg_nsm_change
	269	{
	270	struct in_addr ifaddr; /* attached interface */
	271	struct in_addr nbraddr; /* Neighbor interface address */
	272	struct in_addr router_id; /* Router ID of neighbor */
273	u_char status; /* NSM status */
274	u_char pad[3];
275	};
276
277	/* We make use of a union to define a structure that covers all
278	possible API messages. This allows us to find out how much memory
279	needs to be reserved for the largest API message. */
280	struct apimsg
281	{
282	struct apimsghdr hdr;
283	union
284	{
285	struct msg_register_opaque_type register_opaque_type;
286	struct msg_register_event register_event;
287	struct msg_sync_lsdb sync_lsdb;
288	struct msg_originate_request originate_request;
289	struct msg_delete_request delete_request;
290	struct msg_reply reply;
291	struct msg_ready_notify ready_notify;
292	struct msg_new_if new_if;
293	struct msg_del_if del_if;
294	struct msg_ism_change ism_change;
295	struct msg_nsm_change nsm_change;
296	struct msg_lsa_change_notify lsa_change_notify;
297	}
298	u;
299	};
300
301	#define OSPF_API_MAX_MSG_SIZE (sizeof(struct apimsg) + OSPF_MAX_LSA_SIZE)
302
303	/* -----------------------------------------------------------
304	* Prototypes for specific messages
305	* -----------------------------------------------------------
306	*/
307
308	/* For debugging only. */
4dadc291	309	extern void api_opaque_lsa_print (struct lsa_header *data);
2d33f157	310
2d33f157	311	/* Messages sent by client */
4dadc291	312	extern struct msg *new_msg_register_opaque_type (u_int32_t seqnum,
	313	u_char ltype, u_char otype);
	314	extern struct msg *new_msg_register_event (u_int32_t seqnum,
	315	struct lsa_filter_type *filter);
	316	extern struct msg *new_msg_sync_lsdb (u_int32_t seqnum,
	317	struct lsa_filter_type *filter);
	318	extern struct msg *new_msg_originate_request (u_int32_t seqnum,
	319	struct in_addr ifaddr,
	320	struct in_addr area_id,
	321	struct lsa_header *data);
	322	extern struct msg *new_msg_delete_request (u_int32_t seqnum,
	323	struct in_addr area_id,
	324	u_char lsa_type,
	325	u_char opaque_type,
	326	u_int32_t opaque_id);
2d33f157	327
2d33f157	328	/* Messages sent by OSPF daemon */
4dadc291	329	extern struct msg *new_msg_reply (u_int32_t seqnum, u_char rc);
2d33f157	330
4dadc291	331	extern struct msg *new_msg_ready_notify (u_int32_t seqnr, u_char lsa_type,
	332	u_char opaque_type,
	333	struct in_addr addr);
2d33f157	334
4dadc291	335	extern struct msg *new_msg_new_if (u_int32_t seqnr,
	336	struct in_addr ifaddr,
	337	struct in_addr area);
2d33f157	338
4dadc291	339	extern struct msg *new_msg_del_if (u_int32_t seqnr, struct in_addr ifaddr);
2d33f157	340
4dadc291	341	extern struct msg *new_msg_ism_change (u_int32_t seqnr, struct in_addr ifaddr,
4dadc291	342	struct in_addr area, u_char status);
2d33f157	343
4dadc291	344	extern struct msg *new_msg_nsm_change (u_int32_t seqnr, struct in_addr ifaddr,
	345	struct in_addr nbraddr,
	346	struct in_addr router_id,
	347	u_char status);
2d33f157	348
2d33f157	349	/* msgtype is MSG_LSA_UPDATE_NOTIFY or MSG_LSA_DELETE_NOTIFY */
4dadc291	350	extern struct msg *new_msg_lsa_change_notify (u_char msgtype,
	351	u_int32_t seqnum,
	352	struct in_addr ifaddr,
	353	struct in_addr area_id,
	354	u_char is_self_originated,
	355	struct lsa_header *data);
2d33f157	356
2d33f157	357	/* string printing functions */
4dadc291	358	extern const char *ospf_api_errname (int errcode);
4dadc291	359	extern const char *ospf_api_typename (int msgtype);
2d33f157	360
2d33f157	361	#endif /* _OSPF_API_H */