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
{
44 /* The ifindex of the outgoing interface *if* it's a v6 LL */
48 struct bgp_nexthop_cache_item entry
;
50 /* IGP route's metric. */
53 /* Nexthop number and nexthop linked list.*/
55 struct nexthop
*nexthop
;
59 #define BGP_NEXTHOP_VALID (1 << 0)
60 #define BGP_NEXTHOP_REGISTERED (1 << 1)
61 #define BGP_NEXTHOP_CONNECTED (1 << 2)
62 #define BGP_NEXTHOP_PEER_NOTIFIED (1 << 3)
63 #define BGP_STATIC_ROUTE (1 << 4)
64 #define BGP_STATIC_ROUTE_EXACT_MATCH (1 << 5)
65 #define BGP_NEXTHOP_LABELED_VALID (1 << 6)
67 uint16_t change_flags
;
69 #define BGP_NEXTHOP_CHANGED (1 << 0)
70 #define BGP_NEXTHOP_METRIC_CHANGED (1 << 1)
71 #define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)
73 /* Back pointer to the cache tree this entry belongs to. */
74 struct bgp_nexthop_cache_head
*tree
;
78 void *nht_info
; /* In BGP, peer session */
79 LIST_HEAD(path_list
, bgp_path_info
) paths
;
80 unsigned int path_count
;
84 extern int bgp_nexthop_cache_compare(const struct bgp_nexthop_cache
*a
,
85 const struct bgp_nexthop_cache
*b
);
86 DECLARE_RBTREE_UNIQ(bgp_nexthop_cache
, struct bgp_nexthop_cache
, entry
,
87 bgp_nexthop_cache_compare
);
89 /* Own tunnel-ip address structure */
96 struct in6_addr addrv6
;
97 struct list
*ifp_name_list
;
100 /* Forward declaration(s). */
102 struct update_subgroup
;
106 #define BNC_FLAG_DUMP_SIZE 180
107 extern char *bgp_nexthop_dump_bnc_flags(struct bgp_nexthop_cache
*bnc
,
108 char *buf
, size_t len
);
109 extern char *bgp_nexthop_dump_bnc_change_flags(struct bgp_nexthop_cache
*bnc
,
110 char *buf
, size_t len
);
111 extern void bgp_connected_add(struct bgp
*bgp
, struct connected
*c
);
112 extern void bgp_connected_delete(struct bgp
*bgp
, struct connected
*c
);
113 extern bool bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop
,
114 struct update_subgroup
*subgrp
,
115 struct peer
*exclude
);
116 extern bool bgp_subgrp_multiaccess_check_v6(struct in6_addr nexthop
,
117 struct update_subgroup
*subgrp
,
118 struct peer
*exclude
);
119 extern bool bgp_multiaccess_check_v4(struct in_addr nexthop
, struct peer
*peer
);
120 extern bool bgp_multiaccess_check_v6(struct in6_addr nexthop
,
122 extern int bgp_config_write_scan_time(struct vty
*);
123 extern bool bgp_nexthop_self(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
124 uint8_t sub_type
, struct attr
*attr
,
125 struct bgp_dest
*dest
);
126 extern struct bgp_nexthop_cache
*bnc_new(struct bgp_nexthop_cache_head
*tree
,
127 struct prefix
*prefix
,
128 uint32_t srte_color
);
129 extern bool bnc_existing_for_prefix(struct bgp_nexthop_cache
*bnc
);
130 extern void bnc_free(struct bgp_nexthop_cache
*bnc
);
131 extern struct bgp_nexthop_cache
*bnc_find(struct bgp_nexthop_cache_head
*tree
,
132 struct prefix
*prefix
,
133 uint32_t srte_color
);
134 extern void bnc_nexthop_free(struct bgp_nexthop_cache
*bnc
);
135 extern const char *bnc_str(struct bgp_nexthop_cache
*bnc
, char *buf
, int size
);
136 extern void bgp_scan_init(struct bgp
*bgp
);
137 extern void bgp_scan_finish(struct bgp
*bgp
);
138 extern void bgp_scan_vty_init(void);
139 extern void bgp_address_init(struct bgp
*bgp
);
140 extern void bgp_address_destroy(struct bgp
*bgp
);
141 extern void bgp_tip_add(struct bgp
*bgp
, struct in_addr
*tip
);
142 extern void bgp_tip_del(struct bgp
*bgp
, struct in_addr
*tip
);
143 extern void bgp_tip_hash_init(struct bgp
*bgp
);
144 extern void bgp_tip_hash_destroy(struct bgp
*bgp
);
146 extern void bgp_nexthop_show_address_hash(struct vty
*vty
, struct bgp
*bgp
);
147 #endif /* _QUAGGA_BGP_NEXTHOP_H */