]> git.proxmox.com Git - mirror_frr.git/blame - bgpd/bgp_route.h
If the default route is removed from the BGP table we must re-evaluate "neighbor...
[mirror_frr.git] / bgpd / bgp_route.h
CommitLineData
718e3744 1/* BGP routing information base
2 Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro
3
4This file is part of GNU Zebra.
5
6GNU Zebra is free software; you can redistribute it and/or modify it
7under the terms of the GNU General Public License as published by the
8Free Software Foundation; either version 2, or (at your option) any
9later version.
10
11GNU Zebra is distributed in the hope that it will be useful, but
12WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU Zebra; see the file COPYING. If not, write to the Free
18Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1902111-1307, USA. */
20
00d252cb 21#ifndef _QUAGGA_BGP_ROUTE_H
22#define _QUAGGA_BGP_ROUTE_H
23
b05a1c8b 24#include <json/json.h>
fb018d25 25#include "queue.h"
200df115 26#include "bgp_table.h"
27
fb018d25
DS
28struct bgp_nexthop_cache;
29
3f9c7369
DS
30#define BGP_SHOW_SCODE_HEADER "Status codes: s suppressed, d damped, "\
31 "h history, * valid, > best, = multipath,%s"\
32 " i internal, r RIB-failure, S Stale, R Removed%s"
33#define BGP_SHOW_OCODE_HEADER "Origin codes: i - IGP, e - EGP, ? - incomplete%s%s"
34#define BGP_SHOW_HEADER " Network Next Hop Metric LocPrf Weight Path%s"
35
fb982c25
PJ
36/* Ancillary information to struct bgp_info,
37 * used for uncommonly used data (aggregation, MPLS, etc.)
38 * and lazily allocated to save memory.
39 */
40struct bgp_info_extra
41{
42 /* Pointer to dampening structure. */
43 struct bgp_damp_info *damp_info;
44
45 /* This route is suppressed with aggregation. */
46 int suppress;
47
48 /* Nexthop reachability check. */
49 u_int32_t igpmetric;
50
51 /* MPLS label. */
52 u_char tag[3];
53};
54
718e3744 55struct bgp_info
56{
57 /* For linked list. */
58 struct bgp_info *next;
59 struct bgp_info *prev;
fb018d25
DS
60
61 /* For nexthop linked list */
62 LIST_ENTRY(bgp_info) nh_thread;
63
64 /* Back pointer to the prefix node */
65 struct bgp_node *net;
66
67 /* Back pointer to the nexthop structure */
68 struct bgp_nexthop_cache *nexthop;
69
cbdfbaa5
PJ
70 /* Peer structure. */
71 struct peer *peer;
72
73 /* Attribute structure. */
74 struct attr *attr;
fb982c25
PJ
75
76 /* Extra information */
77 struct bgp_info_extra *extra;
78
de8d5dff
JB
79
80 /* Multipath information */
81 struct bgp_info_mpath *mpath;
82
cbdfbaa5
PJ
83 /* Uptime. */
84 time_t uptime;
85
200df115 86 /* reference count */
228da428 87 int lock;
200df115 88
718e3744 89 /* BGP information status. */
93406d87 90 u_int16_t flags;
718e3744 91#define BGP_INFO_IGP_CHANGED (1 << 0)
92#define BGP_INFO_DAMPED (1 << 1)
93#define BGP_INFO_HISTORY (1 << 2)
94#define BGP_INFO_SELECTED (1 << 3)
95#define BGP_INFO_VALID (1 << 4)
96#define BGP_INFO_ATTR_CHANGED (1 << 5)
97#define BGP_INFO_DMED_CHECK (1 << 6)
98#define BGP_INFO_DMED_SELECTED (1 << 7)
93406d87 99#define BGP_INFO_STALE (1 << 8)
b40d939b 100#define BGP_INFO_REMOVED (1 << 9)
902212c3 101#define BGP_INFO_COUNTED (1 << 10)
de8d5dff
JB
102#define BGP_INFO_MULTIPATH (1 << 11)
103#define BGP_INFO_MULTIPATH_CHG (1 << 12)
718e3744 104
cbdfbaa5
PJ
105 /* BGP route type. This can be static, RIP, OSPF, BGP etc. */
106 u_char type;
107
108 /* When above type is BGP. This sub type specify BGP sub type
109 information. */
110 u_char sub_type;
111#define BGP_ROUTE_NORMAL 0
112#define BGP_ROUTE_STATIC 1
113#define BGP_ROUTE_AGGREGATE 2
114#define BGP_ROUTE_REDISTRIBUTE 3
7c8ff89e
DS
115
116 u_short instance;
117
a82478b9
DS
118 /* Addpath identifiers */
119 u_int32_t addpath_rx_id;
120 u_int32_t addpath_tx_id;
121
718e3744 122};
123
124/* BGP static route configuration. */
125struct bgp_static
126{
127 /* Backdoor configuration. */
128 int backdoor;
129
130 /* Import check status. */
131 u_char valid;
132
133 /* IGP metric. */
134 u_int32_t igpmetric;
135
136 /* IGP nexthop. */
137 struct in_addr igpnexthop;
138
41367172
PJ
139 /* Atomic set reference count (ie cause of pathlimit) */
140 u_int32_t atomic;
141
718e3744 142 /* BGP redistribute route-map. */
143 struct
144 {
145 char *name;
146 struct route_map *map;
147 } rmap;
148
149 /* MPLS label. */
150 u_char tag[3];
151};
152
80e0ad24
DS
153#define BGP_INFO_COUNTABLE(BI) \
154 (! CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
155 && ! CHECK_FLAG ((BI)->flags, BGP_INFO_REMOVED))
156
1a392d46
PJ
157/* Flags which indicate a route is unuseable in some form */
158#define BGP_INFO_UNUSEABLE \
159 (BGP_INFO_HISTORY|BGP_INFO_DAMPED|BGP_INFO_REMOVED)
160/* Macro to check BGP information is alive or not. Sadly,
161 * not equivalent to just checking previous, because of the
162 * sense of the additional VALID flag.
163 */
164#define BGP_INFO_HOLDDOWN(BI) \
165 (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
166 || CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE))
167
718e3744 168#define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name)
169#define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist)
170#define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name)
171#define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist)
172
173#define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name)
174#define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist)
175#define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
176#define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist)
177
178#define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name)
179#define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist)
180#define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
181#define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist)
182
fee0f4c6 183#define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name)
184#define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map)
185#define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name)
186#define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map)
187
188#define ROUTE_MAP_IMPORT_NAME(F) ((F)->map[RMAP_IMPORT].name)
189#define ROUTE_MAP_IMPORT(F) ((F)->map[RMAP_IMPORT].map)
190#define ROUTE_MAP_EXPORT_NAME(F) ((F)->map[RMAP_EXPORT].name)
191#define ROUTE_MAP_EXPORT(F) ((F)->map[RMAP_EXPORT].map)
718e3744 192
193#define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
194#define UNSUPPRESS_MAP(F) ((F)->usmap.map)
195
228da428
CC
196enum bgp_clear_route_type
197{
198 BGP_CLEAR_ROUTE_NORMAL,
199 BGP_CLEAR_ROUTE_MY_RSCLIENT
200};
201
4092b06c
DS
202enum bgp_path_type
203{
204 BGP_PATH_ALL,
205 BGP_PATH_BESTPATH,
206 BGP_PATH_MULTIPATH
207};
208
3f9c7369
DS
209static inline void
210bgp_bump_version (struct bgp_node *node)
211{
212 node->version = bgp_table_next_version(bgp_node_table(node));
213}
214
718e3744 215/* Prototypes. */
f188f2c4 216extern void bgp_process_queue_init (void);
94f2b392 217extern void bgp_route_init (void);
228da428 218extern void bgp_route_finish (void);
94f2b392 219extern void bgp_cleanup_routes (void);
220extern void bgp_announce_route (struct peer *, afi_t, safi_t);
3f9c7369 221extern void bgp_stop_announce_route_timer(struct peer_af *paf);
94f2b392 222extern void bgp_announce_route_all (struct peer *);
223extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
224extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
225extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
226extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
228da428
CC
227extern void bgp_clear_route (struct peer *, afi_t, safi_t,
228 enum bgp_clear_route_type);
94f2b392 229extern void bgp_clear_route_all (struct peer *);
230extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
231extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
718e3744 232
4125bb67
DS
233extern struct bgp_node *bgp_afi_node_get (struct bgp_table *table, afi_t afi,
234 safi_t safi, struct prefix *p,
235 struct prefix_rd *prd);
200df115 236extern struct bgp_info *bgp_info_lock (struct bgp_info *);
237extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
238extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
239extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
fb982c25 240extern struct bgp_info_extra *bgp_info_extra_get (struct bgp_info *);
1a392d46
PJ
241extern void bgp_info_set_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
242extern void bgp_info_unset_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
200df115 243
a82478b9 244extern int bgp_nlri_sanity_check (struct peer *, int, safi_t, u_char *, bgp_size_t, int *);
94f2b392 245extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
718e3744 246
94f2b392 247extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
718e3744 248
f04a80a5 249extern void bgp_redistribute_add (struct prefix *, const struct in_addr *,
bc413143 250 const struct in6_addr *, unsigned int ifindex,
7c8ff89e
DS
251 u_int32_t, u_char, u_short, u_short);
252extern void bgp_redistribute_delete (struct prefix *, u_char, u_short);
253extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int, u_short);
718e3744 254
94f2b392 255extern void bgp_static_delete (struct bgp *);
078430f6 256extern void bgp_static_redo_import_check (struct bgp *);
94f2b392 257extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
718e3744 258 afi_t, safi_t);
94f2b392 259extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
718e3744 260
94f2b392 261extern int bgp_static_set_vpnv4 (struct vty *vty, const char *,
fd79ac91 262 const char *, const char *);
718e3744 263
94f2b392 264extern int bgp_static_unset_vpnv4 (struct vty *, const char *,
fd79ac91 265 const char *, const char *);
718e3744 266
94f2b392 267/* this is primarily for MPLS-VPN */
a82478b9 268extern int bgp_update (struct peer *, struct prefix *, u_int32_t, struct attr *,
94f2b392 269 afi_t, safi_t, int, int, struct prefix_rd *,
270 u_char *, int);
a82478b9 271extern int bgp_withdraw (struct peer *, struct prefix *, u_int32_t, struct attr *,
94f2b392 272 afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
718e3744 273
94f2b392 274/* for bgp_nexthop and bgp_damp */
275extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
cb1faec9
DS
276
277/*
278 * Add an end-of-initial-update marker to the process queue. This is just a
279 * queue element with NULL bgp node.
280 */
281extern void bgp_add_eoiu_mark (struct bgp *, bgp_table_t);
73ac8160
DS
282extern int bgp_config_write_table_map (struct vty *, struct bgp *, afi_t, safi_t,
283 int *);
94f2b392 284extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
285extern int bgp_config_write_distance (struct vty *, struct bgp *);
286
287extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
718e3744 288 afi_t, safi_t);
94f2b392 289extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
718e3744 290 afi_t, safi_t);
291
94f2b392 292extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
718e3744 293
94f2b392 294extern afi_t bgp_node_afi (struct vty *);
295extern safi_t bgp_node_safi (struct vty *);
5a646650 296
b05a1c8b 297extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t, json_object *);
94f2b392 298extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
b05a1c8b 299extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
00d252cb 300
3f9c7369
DS
301extern int
302subgroup_process_announce_selected (struct update_subgroup *subgrp,
303 struct bgp_info *selected,
304 struct bgp_node *rn);
305
306extern int subgroup_announce_check(struct bgp_info *ri,
307 struct update_subgroup *subgrp,
308 struct prefix *p, struct attr *attr);
309
00d252cb 310#endif /* _QUAGGA_BGP_ROUTE_H */