[mirror_frr.git] / bgpd / bgp_nexthop.h

/* BGP nexthop scan
 * Copyright (C) 2000 Kunihiro Ishiguro
 *
 * 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 _QUAGGA_BGP_NEXTHOP_H
#define _QUAGGA_BGP_NEXTHOP_H

#include "if.h"
#include "queue.h"
#include "prefix.h"

#define NEXTHOP_FAMILY(nexthop_len)                                            \
	(((nexthop_len) == 4 || (nexthop_len) == 12                            \
		  ? AF_INET                                                    \
		  : ((nexthop_len) == 16 || (nexthop_len) == 24                \
				     || (nexthop_len) == 48                    \
			     ? AF_INET6                                        \
			     : AF_UNSPEC)))

#define BGP_MP_NEXTHOP_FAMILY NEXTHOP_FAMILY

/* BGP nexthop cache value structure. */
struct bgp_nexthop_cache {
	/* IGP route's metric. */
	u_int32_t metric;

	/* Nexthop number and nexthop linked list.*/
	u_char nexthop_num;
	struct nexthop *nexthop;
	time_t last_update;
	u_int16_t flags;

#define BGP_NEXTHOP_VALID             (1 << 0)
#define BGP_NEXTHOP_REGISTERED        (1 << 1)
#define BGP_NEXTHOP_CONNECTED         (1 << 2)
#define BGP_NEXTHOP_PEER_NOTIFIED     (1 << 3)
#define BGP_STATIC_ROUTE              (1 << 4)
#define BGP_STATIC_ROUTE_EXACT_MATCH  (1 << 5)

	u_int16_t change_flags;

#define BGP_NEXTHOP_CHANGED           (1 << 0)
#define BGP_NEXTHOP_METRIC_CHANGED    (1 << 1)
#define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)

	struct bgp_node *node;
	void *nht_info; /* In BGP, peer session */
	LIST_HEAD(path_list, bgp_info) paths;
	unsigned int path_count;
	struct bgp *bgp;
};

extern int bgp_nexthop_lookup(afi_t, struct peer *peer, struct bgp_info *,
			      int *, int *);
extern void bgp_connected_add(struct bgp *bgp, struct connected *c);
extern void bgp_connected_delete(struct bgp *bgp, struct connected *c);
extern int bgp_multiaccess_check_v4(struct in_addr, struct peer *);
extern int bgp_config_write_scan_time(struct vty *);
extern int bgp_nexthop_self(struct bgp *, struct in_addr);
extern struct bgp_nexthop_cache *bnc_new(void);
extern void bnc_free(struct bgp_nexthop_cache *bnc);
extern void bnc_nexthop_free(struct bgp_nexthop_cache *bnc);
extern char *bnc_str(struct bgp_nexthop_cache *bnc, char *buf, int size);
extern void bgp_scan_init(struct bgp *bgp);
extern void bgp_scan_finish(struct bgp *bgp);
extern void bgp_scan_vty_init(void);
extern void bgp_address_init(struct bgp *bgp);
extern void bgp_address_destroy(struct bgp *bgp);

#endif /* _QUAGGA_BGP_NEXTHOP_H */
Commit	Line	Data
718e3744	1	/* BGP nexthop scan
896014f4 DL	2	* Copyright (C) 2000 Kunihiro Ishiguro
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
718e3744	20
00d252cb	21	#ifndef _QUAGGA_BGP_NEXTHOP_H
	22	#define _QUAGGA_BGP_NEXTHOP_H
	23
5304cb52	24	#include "if.h"
fb018d25 DS	25	#include "queue.h"
fb018d25 DS	26	#include "prefix.h"
5304cb52	27
d62a17ae	28	#define NEXTHOP_FAMILY(nexthop_len) \
	29	(((nexthop_len) == 4 \|\| (nexthop_len) == 12 \
	30	? AF_INET \
	31	: ((nexthop_len) == 16 \|\| (nexthop_len) == 24 \
	32	\|\| (nexthop_len) == 48 \
	33	? AF_INET6 \
	34	: AF_UNSPEC)))
95b9c671	35
65efcfce LB	36	#define BGP_MP_NEXTHOP_FAMILY NEXTHOP_FAMILY
65efcfce LB	37
718e3744	38	/* BGP nexthop cache value structure. */
d62a17ae	39	struct bgp_nexthop_cache {
	40	/* IGP route's metric. */
	41	u_int32_t metric;
718e3744	42
d62a17ae	43	/* Nexthop number and nexthop linked list.*/
	44	u_char nexthop_num;
	45	struct nexthop *nexthop;
	46	time_t last_update;
	47	u_int16_t flags;
fb018d25	48
fc9a856f DS	49	#define BGP_NEXTHOP_VALID (1 << 0)
	50	#define BGP_NEXTHOP_REGISTERED (1 << 1)
	51	#define BGP_NEXTHOP_CONNECTED (1 << 2)
	52	#define BGP_NEXTHOP_PEER_NOTIFIED (1 << 3)
078430f6 DS	53	#define BGP_STATIC_ROUTE (1 << 4)
078430f6 DS	54	#define BGP_STATIC_ROUTE_EXACT_MATCH (1 << 5)
fb018d25	55
d62a17ae	56	u_int16_t change_flags;
fb018d25	57
fc9a856f DS	58	#define BGP_NEXTHOP_CHANGED (1 << 0)
	59	#define BGP_NEXTHOP_METRIC_CHANGED (1 << 1)
	60	#define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)
fb018d25	61
d62a17ae	62	struct bgp_node *node;
	63	void nht_info; / In BGP, peer session */
	64	LIST_HEAD(path_list, bgp_info) paths;
	65	unsigned int path_count;
	66	struct bgp *bgp;
718e3744	67	};
718e3744	68
d62a17ae	69	extern int bgp_nexthop_lookup(afi_t, struct peer peer, struct bgp_info ,
	70	int , int );
	71	extern void bgp_connected_add(struct bgp bgp, struct connected c);
	72	extern void bgp_connected_delete(struct bgp bgp, struct connected c);
	73	extern int bgp_multiaccess_check_v4(struct in_addr, struct peer *);
	74	extern int bgp_config_write_scan_time(struct vty *);
	75	extern int bgp_nexthop_self(struct bgp *, struct in_addr);
ffd0c037	76	extern struct bgp_nexthop_cache *bnc_new(void);
fb018d25 DS	77	extern void bnc_free(struct bgp_nexthop_cache *bnc);
	78	extern void bnc_nexthop_free(struct bgp_nexthop_cache *bnc);
	79	extern char bnc_str(struct bgp_nexthop_cache bnc, char *buf, int size);
6aeb9e78 DS	80	extern void bgp_scan_init(struct bgp *bgp);
6aeb9e78 DS	81	extern void bgp_scan_finish(struct bgp *bgp);
ffd0c037	82	extern void bgp_scan_vty_init(void);
d62a17ae	83	extern void bgp_address_init(struct bgp *bgp);
d62a17ae	84	extern void bgp_address_destroy(struct bgp *bgp);
00d252cb	85
00d252cb	86	#endif /* _QUAGGA_BGP_NEXTHOP_H */