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/* 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) == 32 \
|| (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. */
uint32_t metric;
/* Nexthop number and nexthop linked list.*/
uint8_t nexthop_num;
struct nexthop *nexthop;
time_t last_update;
uint16_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)
#define BGP_NEXTHOP_LABELED_VALID (1 << 6)
uint16_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;
};
/* BGP own address structure */
struct bgp_addr {
struct in_addr addr;
int refcnt;
};
/* Own tunnel-ip address structure */
struct tip_addr {
struct in_addr addr;
int refcnt;
};
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_subgrp_multiaccess_check_v4(struct in_addr nexthop,
struct update_subgroup *subgrp);
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);
extern void bgp_tip_add(struct bgp *bgp, struct in_addr *tip);
extern void bgp_tip_del(struct bgp *bgp, struct in_addr *tip);
extern void bgp_tip_hash_init(struct bgp *bgp);
extern void bgp_tip_hash_destroy(struct bgp *bgp);
#endif /* _QUAGGA_BGP_NEXTHOP_H */
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