[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. */
			    /* $FRR indent$ */
			    /* clang-format off */
#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.
ac4d0be5	6	*
2d33f157	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	/* -----------------------------------------------------------
ac4d0be5	41	* Generic messages
2d33f157	42	* -----------------------------------------------------------
	43	*/
	44
	45	/* Message header structure, fields are in network byte order and
	46	aligned to four octets. */
ac4d0be5	47	struct apimsghdr {
	48	u_char version; /* OSPF API protocol version */
	49	u_char msgtype; /* Type of message */
	50	u_int16_t msglen; /* Length of message w/o header */
	51	u_int32_t msgseq; /* Sequence number */
2d33f157	52	};
	53
	54	/* Message representation with header and body */
ac4d0be5	55	struct msg {
ac4d0be5	56	struct msg next; / to link into fifo */
2d33f157	57
ac4d0be5	58	/* Message header */
ac4d0be5	59	struct apimsghdr hdr;
2d33f157	60
ac4d0be5	61	/* Message body */
ac4d0be5	62	struct stream *s;
2d33f157	63	};
	64
	65	/* Prototypes for generic messages. */
ac4d0be5	66	extern struct msg msg_new(u_char msgtype, void msgbody, u_int32_t seqnum,
	67	u_int16_t msglen);
	68	extern struct msg msg_dup(struct msg msg);
	69	extern void msg_print(struct msg msg); / XXX debug only */
	70	extern void msg_free(struct msg *msg);
	71	struct msg *msg_read(int fd);
	72	extern int msg_write(int fd, struct msg *msg);
2d33f157	73
	74	/* For requests, the message sequence number is between MIN_SEQ and
	75	MAX_SEQ. For notifications, the sequence number is 0. */
	76
	77	#define MIN_SEQ 1
	78	#define MAX_SEQ 2147483647
	79
ac4d0be5	80	extern void msg_set_seq(struct msg *msg, u_int32_t seqnr);
ac4d0be5	81	extern u_int32_t msg_get_seq(struct msg *msg);
2d33f157	82
	83	/* -----------------------------------------------------------
	84	* Message fifo queues
	85	* -----------------------------------------------------------
	86	*/
	87
	88	/* Message queue structure. */
ac4d0be5	89	struct msg_fifo {
ac4d0be5	90	unsigned long count;
2d33f157	91
ac4d0be5	92	struct msg *head;
ac4d0be5	93	struct msg *tail;
2d33f157	94	};
	95
	96	/* Prototype for message fifo queues. */
ac4d0be5	97	extern struct msg_fifo *msg_fifo_new(void);
	98	extern void msg_fifo_push(struct msg_fifo , struct msg msg);
	99	extern struct msg msg_fifo_pop(struct msg_fifo fifo);
	100	extern struct msg msg_fifo_head(struct msg_fifo fifo);
	101	extern void msg_fifo_flush(struct msg_fifo *fifo);
	102	extern void msg_fifo_free(struct msg_fifo *fifo);
2d33f157	103
	104	/* -----------------------------------------------------------
	105	* Specific message type and format definitions
	106	* -----------------------------------------------------------
	107	*/
	108
	109	/* Messages to OSPF daemon. */
	110	#define MSG_REGISTER_OPAQUETYPE 1
	111	#define MSG_UNREGISTER_OPAQUETYPE 2
	112	#define MSG_REGISTER_EVENT 3
	113	#define MSG_SYNC_LSDB 4
	114	#define MSG_ORIGINATE_REQUEST 5
	115	#define MSG_DELETE_REQUEST 6
	116
	117	/* Messages from OSPF daemon. */
	118	#define MSG_REPLY 10
	119	#define MSG_READY_NOTIFY 11
	120	#define MSG_LSA_UPDATE_NOTIFY 12
	121	#define MSG_LSA_DELETE_NOTIFY 13
	122	#define MSG_NEW_IF 14
	123	#define MSG_DEL_IF 15
	124	#define MSG_ISM_CHANGE 16
	125	#define MSG_NSM_CHANGE 17
	126
ac4d0be5	127	struct msg_register_opaque_type {
	128	u_char lsatype;
	129	u_char opaquetype;
	130	u_char pad[2]; /* padding */
2d33f157	131	};
2d33f157	132
ac4d0be5	133	struct msg_unregister_opaque_type {
	134	u_char lsatype;
	135	u_char opaquetype;
	136	u_char pad[2]; /* padding */
2d33f157	137	};
	138
	139	/* Power2 is needed to convert LSA types into bit positions,
	140	* see typemask below. Type definition starts at 1, so
	141	* Power2[0] is not used. */
	142
	143
	144	#ifdef ORIGINAL_CODING
ac4d0be5	145	static const u_int16_t Power2[] = {0x0, 0x1, 0x2, 0x4, 0x8, 0x10,
	146	0x20, 0x40, 0x80, 0x100, 0x200, 0x400,
	147	0x800, 0x1000, 0x2000, 0x4000, 0x8000};
2d33f157	148	#else
ac4d0be5	149	static const u_int16_t Power2[] = {
	150	0, (1 << 0), (1 << 1), (1 << 2), (1 << 3), (1 << 4),
	151	(1 << 5), (1 << 6), (1 << 7), (1 << 8), (1 << 9), (1 << 10),
	152	(1 << 11), (1 << 12), (1 << 13), (1 << 14), (1 << 15)};
2d33f157	153	#endif /* ORIGINAL_CODING */
2d33f157	154
ac4d0be5	155	struct lsa_filter_type {
	156	u_int16_t typemask; /* bitmask for selecting LSA types (1..16) */
	157	u_char origin; /* selects according to origin. */
	158	/* $FRR indent$ */
	159	/* clang-format off */
2d33f157	160	#define NON_SELF_ORIGINATED 0
	161	#define SELF_ORIGINATED (OSPF_LSA_SELF)
	162	#define ANY_ORIGIN 2
	163
ac4d0be5	164	u_char num_areas; /* number of areas in the filter. */
ac4d0be5	165	/* areas, if any, go here. */
2d33f157	166	};
2d33f157	167
ac4d0be5	168	struct msg_register_event {
ac4d0be5	169	struct lsa_filter_type filter;
2d33f157	170	};
2d33f157	171
ac4d0be5	172	struct msg_sync_lsdb {
ac4d0be5	173	struct lsa_filter_type filter;
2d33f157	174	};
2d33f157	175
ac4d0be5	176	struct msg_originate_request {
	177	/* Used for LSA type 9 otherwise ignored */
	178	struct in_addr ifaddr;
2d33f157	179
ac4d0be5	180	/* Used for LSA type 10 otherwise ignored */
ac4d0be5	181	struct in_addr area_id;
2d33f157	182
ac4d0be5	183	/* LSA header and LSA-specific part */
ac4d0be5	184	struct lsa_header data;
2d33f157	185	};
2d33f157	186
ac4d0be5	187	struct msg_delete_request {
	188	struct in_addr area_id; /* "0.0.0.0" for AS-external opaque LSAs */
	189	u_char lsa_type;
	190	u_char opaque_type;
	191	u_char pad[2]; /* padding */
	192	u_int32_t opaque_id;
2d33f157	193	};
2d33f157	194
ac4d0be5	195	struct msg_reply {
ac4d0be5	196	signed char errcode;
2d33f157	197	#define OSPF_API_OK 0
	198	#define OSPF_API_NOSUCHINTERFACE (-1)
	199	#define OSPF_API_NOSUCHAREA (-2)
	200	#define OSPF_API_NOSUCHLSA (-3)
	201	#define OSPF_API_ILLEGALLSATYPE (-4)
	202	#define OSPF_API_OPAQUETYPEINUSE (-5)
	203	#define OSPF_API_OPAQUETYPENOTREGISTERED (-6)
	204	#define OSPF_API_NOTREADY (-7)
	205	#define OSPF_API_NOMEMORY (-8)
	206	#define OSPF_API_ERROR (-9)
	207	#define OSPF_API_UNDEF (-10)
ac4d0be5	208	u_char pad[3]; /* padding to four byte alignment */
2d33f157	209	};
2d33f157	210
ac4d0be5	211	/* Message to tell client application that it ospf daemon is
2d33f157	212	* ready to accept opaque LSAs for a given interface or area. */
2d33f157	213
ac4d0be5	214	struct msg_ready_notify {
	215	u_char lsa_type;
	216	u_char opaque_type;
	217	u_char pad[2]; /* padding */
	218	struct in_addr addr; /* interface address or area address */
2d33f157	219	};
	220
	221	/* These messages have a dynamic length depending on the embodied LSA.
	222	They are aligned to four octets. msg_lsa_change_notify is used for
	223	both LSA update and LSAs delete. */
	224
ac4d0be5	225	struct msg_lsa_change_notify {
	226	/* Used for LSA type 9 otherwise ignored */
	227	struct in_addr ifaddr;
	228	/* Area ID. Not valid for AS-External and Opaque11 LSAs. */
	229	struct in_addr area_id;
	230	u_char is_self_originated; /* 1 if self originated. */
	231	u_char pad[3];
	232	struct lsa_header data;
2d33f157	233	};
2d33f157	234
ac4d0be5	235	struct msg_new_if {
	236	struct in_addr ifaddr; /* interface IP address */
	237	struct in_addr area_id; /* area this interface belongs to */
2d33f157	238	};
2d33f157	239
ac4d0be5	240	struct msg_del_if {
ac4d0be5	241	struct in_addr ifaddr; /* interface IP address */
2d33f157	242	};
2d33f157	243
ac4d0be5	244	struct msg_ism_change {
	245	struct in_addr ifaddr; /* interface IP address */
	246	struct in_addr area_id; /* area this interface belongs to */
	247	u_char status; /* interface status (up/down) */
	248	u_char pad[3]; /* not used */
2d33f157	249	};
2d33f157	250
ac4d0be5	251	struct msg_nsm_change {
	252	struct in_addr ifaddr; /* attached interface */
	253	struct in_addr nbraddr; /* Neighbor interface address */
	254	struct in_addr router_id; /* Router ID of neighbor */
	255	u_char status; /* NSM status */
	256	u_char pad[3];
2d33f157	257	};
	258
	259	/* We make use of a union to define a structure that covers all
	260	possible API messages. This allows us to find out how much memory
	261	needs to be reserved for the largest API message. */
ac4d0be5	262	struct apimsg {
	263	struct apimsghdr hdr;
	264	union {
	265	struct msg_register_opaque_type register_opaque_type;
	266	struct msg_register_event register_event;
	267	struct msg_sync_lsdb sync_lsdb;
	268	struct msg_originate_request originate_request;
	269	struct msg_delete_request delete_request;
	270	struct msg_reply reply;
	271	struct msg_ready_notify ready_notify;
	272	struct msg_new_if new_if;
	273	struct msg_del_if del_if;
	274	struct msg_ism_change ism_change;
	275	struct msg_nsm_change nsm_change;
	276	struct msg_lsa_change_notify lsa_change_notify;
	277	} u;
2d33f157	278	};
	279
	280	#define OSPF_API_MAX_MSG_SIZE (sizeof(struct apimsg) + OSPF_MAX_LSA_SIZE)
	281
	282	/* -----------------------------------------------------------
	283	* Prototypes for specific messages
	284	* -----------------------------------------------------------
	285	*/
	286
	287	/* For debugging only. */
ac4d0be5	288	extern void api_opaque_lsa_print(struct lsa_header *data);
2d33f157	289
2d33f157	290	/* Messages sent by client */
ac4d0be5	291	extern struct msg *new_msg_register_opaque_type(u_int32_t seqnum, u_char ltype,
	292	u_char otype);
	293	extern struct msg *new_msg_register_event(u_int32_t seqnum,
	294	struct lsa_filter_type *filter);
	295	extern struct msg *new_msg_sync_lsdb(u_int32_t seqnum,
	296	struct lsa_filter_type *filter);
	297	extern struct msg *new_msg_originate_request(u_int32_t seqnum,
	298	struct in_addr ifaddr,
	299	struct in_addr area_id,
	300	struct lsa_header *data);
	301	extern struct msg *new_msg_delete_request(u_int32_t seqnum,
	302	struct in_addr area_id,
	303	u_char lsa_type, u_char opaque_type,
	304	u_int32_t opaque_id);
2d33f157	305
2d33f157	306	/* Messages sent by OSPF daemon */
ac4d0be5	307	extern struct msg *new_msg_reply(u_int32_t seqnum, u_char rc);
2d33f157	308
ac4d0be5	309	extern struct msg *new_msg_ready_notify(u_int32_t seqnr, u_char lsa_type,
	310	u_char opaque_type,
	311	struct in_addr addr);
2d33f157	312
ac4d0be5	313	extern struct msg *new_msg_new_if(u_int32_t seqnr, struct in_addr ifaddr,
ac4d0be5	314	struct in_addr area);
2d33f157	315
ac4d0be5	316	extern struct msg *new_msg_del_if(u_int32_t seqnr, struct in_addr ifaddr);
2d33f157	317
ac4d0be5	318	extern struct msg *new_msg_ism_change(u_int32_t seqnr, struct in_addr ifaddr,
ac4d0be5	319	struct in_addr area, u_char status);
2d33f157	320
ac4d0be5	321	extern struct msg *new_msg_nsm_change(u_int32_t seqnr, struct in_addr ifaddr,
	322	struct in_addr nbraddr,
	323	struct in_addr router_id, u_char status);
2d33f157	324
2d33f157	325	/* msgtype is MSG_LSA_UPDATE_NOTIFY or MSG_LSA_DELETE_NOTIFY */
ac4d0be5	326	extern struct msg *new_msg_lsa_change_notify(u_char msgtype, u_int32_t seqnum,
	327	struct in_addr ifaddr,
	328	struct in_addr area_id,
	329	u_char is_self_originated,
	330	struct lsa_header *data);
2d33f157	331
2d33f157	332	/* string printing functions */
ac4d0be5	333	extern const char *ospf_api_errname(int errcode);
ac4d0be5	334	extern const char *ospf_api_typename(int msgtype);
2d33f157	335
2d33f157	336	#endif /* _OSPF_API_H */