2 * Copyright (C) 2000 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
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
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.
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
21 #ifndef _QUAGGA_BGP_NEXTHOP_H
22 #define _QUAGGA_BGP_NEXTHOP_H
27 #include "bgp_table.h"
29 #define NEXTHOP_FAMILY(nexthop_len) \
30 (((nexthop_len) == 4 || (nexthop_len) == 12 \
32 : ((nexthop_len) == 16 || (nexthop_len) == 24 \
33 || (nexthop_len) == 32 \
34 || (nexthop_len) == 48 \
38 #define BGP_MP_NEXTHOP_FAMILY NEXTHOP_FAMILY
40 PREDECL_RBTREE_UNIQ(bgp_nexthop_cache
);
42 /* BGP nexthop cache value structure. */
43 struct bgp_nexthop_cache
{
45 struct bgp_nexthop_cache_item entry
;
47 /* IGP route's metric. */
50 /* Nexthop number and nexthop linked list.*/
52 struct nexthop
*nexthop
;
56 #define BGP_NEXTHOP_VALID (1 << 0)
57 #define BGP_NEXTHOP_REGISTERED (1 << 1)
58 #define BGP_NEXTHOP_CONNECTED (1 << 2)
59 #define BGP_NEXTHOP_PEER_NOTIFIED (1 << 3)
60 #define BGP_STATIC_ROUTE (1 << 4)
61 #define BGP_STATIC_ROUTE_EXACT_MATCH (1 << 5)
62 #define BGP_NEXTHOP_LABELED_VALID (1 << 6)
64 uint16_t change_flags
;
66 #define BGP_NEXTHOP_CHANGED (1 << 0)
67 #define BGP_NEXTHOP_METRIC_CHANGED (1 << 1)
68 #define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)
70 /* Back pointer to the cache tree this entry belongs to. */
71 struct bgp_nexthop_cache_head
*tree
;
75 void *nht_info
; /* In BGP, peer session */
76 LIST_HEAD(path_list
, bgp_path_info
) paths
;
77 unsigned int path_count
;
81 extern int bgp_nexthop_cache_compare(const struct bgp_nexthop_cache
*a
,
82 const struct bgp_nexthop_cache
*b
);
83 DECLARE_RBTREE_UNIQ(bgp_nexthop_cache
, struct bgp_nexthop_cache
, entry
,
84 bgp_nexthop_cache_compare
);
86 /* Own tunnel-ip address structure */
93 struct in6_addr addrv6
;
94 struct list
*ifp_name_list
;
97 /* Forward declaration(s). */
99 struct update_subgroup
;
103 extern void bgp_connected_add(struct bgp
*bgp
, struct connected
*c
);
104 extern void bgp_connected_delete(struct bgp
*bgp
, struct connected
*c
);
105 extern bool bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop
,
106 struct update_subgroup
*subgrp
,
107 struct peer
*exclude
);
108 extern bool bgp_subgrp_multiaccess_check_v6(struct in6_addr nexthop
,
109 struct update_subgroup
*subgrp
,
110 struct peer
*exclude
);
111 extern bool bgp_multiaccess_check_v4(struct in_addr nexthop
, struct peer
*peer
);
112 extern bool bgp_multiaccess_check_v6(struct in6_addr nexthop
,
114 extern int bgp_config_write_scan_time(struct vty
*);
115 extern bool bgp_nexthop_self(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
116 uint8_t sub_type
, struct attr
*attr
,
117 struct bgp_dest
*dest
);
118 extern struct bgp_nexthop_cache
*bnc_new(struct bgp_nexthop_cache_head
*tree
,
119 struct prefix
*prefix
,
120 uint32_t srte_color
);
121 extern bool bnc_existing_for_prefix(struct bgp_nexthop_cache
*bnc
);
122 extern void bnc_free(struct bgp_nexthop_cache
*bnc
);
123 extern struct bgp_nexthop_cache
*bnc_find(struct bgp_nexthop_cache_head
*tree
,
124 struct prefix
*prefix
,
125 uint32_t srte_color
);
126 extern void bnc_nexthop_free(struct bgp_nexthop_cache
*bnc
);
127 extern const char *bnc_str(struct bgp_nexthop_cache
*bnc
, char *buf
, int size
);
128 extern void bgp_scan_init(struct bgp
*bgp
);
129 extern void bgp_scan_finish(struct bgp
*bgp
);
130 extern void bgp_scan_vty_init(void);
131 extern void bgp_address_init(struct bgp
*bgp
);
132 extern void bgp_address_destroy(struct bgp
*bgp
);
133 extern void bgp_tip_add(struct bgp
*bgp
, struct in_addr
*tip
);
134 extern void bgp_tip_del(struct bgp
*bgp
, struct in_addr
*tip
);
135 extern void bgp_tip_hash_init(struct bgp
*bgp
);
136 extern void bgp_tip_hash_destroy(struct bgp
*bgp
);
138 extern void bgp_nexthop_show_address_hash(struct vty
*vty
, struct bgp
*bgp
);
139 #endif /* _QUAGGA_BGP_NEXTHOP_H */