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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 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. */
#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)) \
)
/* 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)
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;
};
extern int bgp_nexthop_lookup (afi_t, struct peer *peer, struct bgp_info *,
int *, int *);
extern void bgp_connected_add (struct connected *c);
extern void bgp_connected_delete (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_onlink (afi_t, struct attr *);
extern int bgp_nexthop_self (struct attr *);
extern void bgp_address_init (void);
extern void bgp_address_destroy (void);
extern void bgp_scan_destroy (void);
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 (void);
extern void bgp_scan_vty_init (void);
#endif /* _QUAGGA_BGP_NEXTHOP_H */
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