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Commit | Line | Data |
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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" |
26 | #include "prefix.h" | |
f663c581 | 27 | #include "bgp_table.h" |
5304cb52 | 28 | |
d62a17ae | 29 | #define NEXTHOP_FAMILY(nexthop_len) \ |
30 | (((nexthop_len) == 4 || (nexthop_len) == 12 \ | |
31 | ? AF_INET \ | |
32 | : ((nexthop_len) == 16 || (nexthop_len) == 24 \ | |
77e62f2b | 33 | || (nexthop_len) == 32 \ |
d62a17ae | 34 | || (nexthop_len) == 48 \ |
35 | ? AF_INET6 \ | |
36 | : AF_UNSPEC))) | |
95b9c671 | 37 | |
65efcfce LB |
38 | #define BGP_MP_NEXTHOP_FAMILY NEXTHOP_FAMILY |
39 | ||
f663c581 RW |
40 | PREDECL_RBTREE_UNIQ(bgp_nexthop_cache); |
41 | ||
718e3744 | 42 | /* BGP nexthop cache value structure. */ |
d62a17ae | 43 | struct bgp_nexthop_cache { |
8761cd6d DS |
44 | /* The ifindex of the outgoing interface *if* it's a v6 LL */ |
45 | ifindex_t ifindex; | |
46 | ||
f663c581 RW |
47 | /* RB-tree entry. */ |
48 | struct bgp_nexthop_cache_item entry; | |
49 | ||
d62a17ae | 50 | /* IGP route's metric. */ |
d7c0a89a | 51 | uint32_t metric; |
718e3744 | 52 | |
d62a17ae | 53 | /* Nexthop number and nexthop linked list.*/ |
d7c0a89a | 54 | uint8_t nexthop_num; |
d62a17ae | 55 | struct nexthop *nexthop; |
56 | time_t last_update; | |
d7c0a89a | 57 | uint16_t flags; |
fb018d25 | 58 | |
021b6596 AD |
59 | /* |
60 | * If the nexthop is EVPN gateway IP NH, VALID flag is set only if the nexthop | |
61 | * is RIB reachable as well as MAC/IP is present | |
62 | */ | |
fc9a856f DS |
63 | #define BGP_NEXTHOP_VALID (1 << 0) |
64 | #define BGP_NEXTHOP_REGISTERED (1 << 1) | |
65 | #define BGP_NEXTHOP_CONNECTED (1 << 2) | |
66 | #define BGP_NEXTHOP_PEER_NOTIFIED (1 << 3) | |
078430f6 DS |
67 | #define BGP_STATIC_ROUTE (1 << 4) |
68 | #define BGP_STATIC_ROUTE_EXACT_MATCH (1 << 5) | |
960035b2 | 69 | #define BGP_NEXTHOP_LABELED_VALID (1 << 6) |
fb018d25 | 70 | |
021b6596 AD |
71 | /* |
72 | * This flag is added for EVPN gateway IP nexthops. | |
73 | * If the nexthop is RIB reachable, but a MAC/IP is not yet | |
74 | * resolved, this flag is set. | |
75 | * Following table explains the combination of L3 and L2 reachability w.r.t. | |
76 | * VALID and INCOMPLETE flags | |
77 | * | |
78 | * | MACIP resolved | MACIP unresolved | |
79 | *----------------|----------------|------------------ | |
80 | * L3 reachable | VALID = 1 | VALID = 0 | |
81 | * | INCOMPLETE = 0 | INCOMPLETE = 1 | |
82 | * ---------------|----------------|-------------------- | |
83 | * L3 unreachable | VALID = 0 | VALID = 0 | |
84 | * | INCOMPLETE = 0 | INCOMPLETE = 0 | |
85 | */ | |
86 | #define BGP_NEXTHOP_EVPN_INCOMPLETE (1 << 7) | |
87 | ||
d7c0a89a | 88 | uint16_t change_flags; |
fb018d25 | 89 | |
fc9a856f DS |
90 | #define BGP_NEXTHOP_CHANGED (1 << 0) |
91 | #define BGP_NEXTHOP_METRIC_CHANGED (1 << 1) | |
92 | #define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2) | |
021b6596 | 93 | #define BGP_NEXTHOP_MACIP_CHANGED (1 << 3) |
fb018d25 | 94 | |
f663c581 RW |
95 | /* Back pointer to the cache tree this entry belongs to. */ |
96 | struct bgp_nexthop_cache_head *tree; | |
97 | ||
545aeef1 | 98 | uint32_t srte_color; |
f663c581 | 99 | struct prefix prefix; |
d62a17ae | 100 | void *nht_info; /* In BGP, peer session */ |
4b7e6066 | 101 | LIST_HEAD(path_list, bgp_path_info) paths; |
d62a17ae | 102 | unsigned int path_count; |
103 | struct bgp *bgp; | |
021b6596 AD |
104 | |
105 | /* This flag is set to TRUE for a bnc that is gateway IP overlay index | |
106 | * nexthop. | |
107 | */ | |
108 | bool is_evpn_gwip_nexthop; | |
718e3744 | 109 | }; |
110 | ||
f663c581 RW |
111 | extern int bgp_nexthop_cache_compare(const struct bgp_nexthop_cache *a, |
112 | const struct bgp_nexthop_cache *b); | |
113 | DECLARE_RBTREE_UNIQ(bgp_nexthop_cache, struct bgp_nexthop_cache, entry, | |
114 | bgp_nexthop_cache_compare); | |
115 | ||
db0e1937 MK |
116 | /* Own tunnel-ip address structure */ |
117 | struct tip_addr { | |
118 | struct in_addr addr; | |
119 | int refcnt; | |
120 | }; | |
121 | ||
737af885 BS |
122 | struct bgp_addrv6 { |
123 | struct in6_addr addrv6; | |
124 | struct list *ifp_name_list; | |
125 | }; | |
126 | ||
f663c581 RW |
127 | /* Forward declaration(s). */ |
128 | struct peer; | |
129 | struct update_subgroup; | |
130 | struct bgp_dest; | |
131 | struct attr; | |
132 | ||
987a720a DS |
133 | #define BNC_FLAG_DUMP_SIZE 180 |
134 | extern char *bgp_nexthop_dump_bnc_flags(struct bgp_nexthop_cache *bnc, | |
135 | char *buf, size_t len); | |
df2a41a9 DS |
136 | extern char *bgp_nexthop_dump_bnc_change_flags(struct bgp_nexthop_cache *bnc, |
137 | char *buf, size_t len); | |
d62a17ae | 138 | extern void bgp_connected_add(struct bgp *bgp, struct connected *c); |
139 | extern void bgp_connected_delete(struct bgp *bgp, struct connected *c); | |
3dc339cd DA |
140 | extern bool bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop, |
141 | struct update_subgroup *subgrp, | |
142 | struct peer *exclude); | |
143 | extern bool bgp_subgrp_multiaccess_check_v6(struct in6_addr nexthop, | |
144 | struct update_subgroup *subgrp, | |
145 | struct peer *exclude); | |
146 | extern bool bgp_multiaccess_check_v4(struct in_addr nexthop, struct peer *peer); | |
147 | extern bool bgp_multiaccess_check_v6(struct in6_addr nexthop, | |
148 | struct peer *peer); | |
d62a17ae | 149 | extern int bgp_config_write_scan_time(struct vty *); |
3dc339cd DA |
150 | extern bool bgp_nexthop_self(struct bgp *bgp, afi_t afi, uint8_t type, |
151 | uint8_t sub_type, struct attr *attr, | |
9bcb3eef | 152 | struct bgp_dest *dest); |
f663c581 | 153 | extern struct bgp_nexthop_cache *bnc_new(struct bgp_nexthop_cache_head *tree, |
545aeef1 | 154 | struct prefix *prefix, |
35aae5c9 DS |
155 | uint32_t srte_color, |
156 | ifindex_t ifindex); | |
e37e1e27 | 157 | extern bool bnc_existing_for_prefix(struct bgp_nexthop_cache *bnc); |
fb018d25 | 158 | extern void bnc_free(struct bgp_nexthop_cache *bnc); |
f663c581 | 159 | extern struct bgp_nexthop_cache *bnc_find(struct bgp_nexthop_cache_head *tree, |
545aeef1 | 160 | struct prefix *prefix, |
35aae5c9 DS |
161 | uint32_t srte_color, |
162 | ifindex_t ifindex); | |
fb018d25 | 163 | extern void bnc_nexthop_free(struct bgp_nexthop_cache *bnc); |
6aeb9e78 DS |
164 | extern void bgp_scan_init(struct bgp *bgp); |
165 | extern void bgp_scan_finish(struct bgp *bgp); | |
ffd0c037 | 166 | extern void bgp_scan_vty_init(void); |
d62a17ae | 167 | extern void bgp_address_init(struct bgp *bgp); |
168 | extern void bgp_address_destroy(struct bgp *bgp); | |
db0e1937 MK |
169 | extern void bgp_tip_add(struct bgp *bgp, struct in_addr *tip); |
170 | extern void bgp_tip_del(struct bgp *bgp, struct in_addr *tip); | |
171 | extern void bgp_tip_hash_init(struct bgp *bgp); | |
172 | extern void bgp_tip_hash_destroy(struct bgp *bgp); | |
00d252cb | 173 | |
af97a18b | 174 | extern void bgp_nexthop_show_address_hash(struct vty *vty, struct bgp *bgp); |
00d252cb | 175 | #endif /* _QUAGGA_BGP_NEXTHOP_H */ |