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Merge branch 'cmaster-next' of ssh://stash.cumulusnetworks.com:7999/quag/quagga into...
[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
2 Copyright (C) 1996, 97, 98, 99, 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_BGPD_H
22#define _QUAGGA_BGPD_H
23
856ca177 24#include "lib/json.h"
6aeb9e78
DS		 25#include "vrf.h"
26
718e3744 27/* For union sockunion. */
3f9c7369 28#include "queue.h"
718e3744 29#include "sockunion.h"
518f0eb1 30#include "routemap.h"
ffd0c037 31#include "linklist.h"
718e3744 32
04b6bdc0
DW		 33#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
34
5c81b96a 35/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
36#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
37
3f9c7369
DS		 38struct update_subgroup;
39struct bpacket;
40
0299c004
DS		 41/*
42 * Allow the neighbor XXXX remote-as to take internal or external
43 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement behavior
44 * in the system.
45 */
46enum {
47 AS_UNSPECIFIED = 0,
48 AS_SPECIFIED,
49 AS_INTERNAL,
50 AS_EXTERNAL,
51};
52
718e3744 53/* Typedef BGP specific types. */
0b2aa3a0
PJ		 54typedef u_int32_t as_t;
55typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 56typedef u_int16_t bgp_size_t;
57
3f9c7369
DS		 58#define max(a,b) \
59 ({ __typeof__ (a) _a = (a); \
60 __typeof__ (b) _b = (b); \
61 _a > _b ? _a : _b; })
62
63enum bgp_af_index
64{
65 BGP_AF_START,
66 BGP_AF_IPV4_UNICAST = BGP_AF_START,
67 BGP_AF_IPV4_MULTICAST,
68 BGP_AF_IPV4_VPN,
69 BGP_AF_IPV6_UNICAST,
70 BGP_AF_IPV6_MULTICAST,
71 BGP_AF_MAX
72};
73
74#define AF_FOREACH(af) \
75 for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
76
77#define FOREACH_AFI_SAFI(afi, safi) \
78 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
79 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
80
718e3744 81/* BGP master for system wide configurations and variables. */
82struct bgp_master
83{
84 /* BGP instance list. */
85 struct list *bgp;
86
87d4a781
DS		 87 /* BGP thread master. */
88 struct thread_master *master;
89
200df115 90 /* work queues */
91 struct work_queue *process_main_queue;
200df115 92
0df7c91f
PJ		 93 /* Listening sockets */
94 struct list *listen_sockets;
95
718e3744 96 /* BGP port number. */
97 u_int16_t port;
98
3a02d1f7
PJ		 99 /* Listener address */
100 char *address;
101
718e3744 102 /* BGP start time. */
103 time_t start_time;
104
105 /* Various BGP global configuration. */
106 u_char options;
107#define BGP_OPT_NO_FIB (1 << 0)
108#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
109#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 110#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369
DS		 111
112 u_int64_t updgrp_idspace;
113 u_int64_t subgrp_idspace;
5fe9f963 114
115 /* timer to dampen route map changes */
116 struct thread *t_rmap_update; /* Handle route map updates */
117 u_int32_t rmap_update_timer; /* Route map update timer */
118#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
718e3744 119};
120
73ac8160
DS		 121/* BGP route-map structure. */
122struct bgp_rmap
123{
124 char *name;
125 struct route_map *map;
126};
127
7c8ff89e
DS		 128struct bgp_redist
129{
130 u_short instance;
131
132 /* BGP redistribute metric configuration. */
133 u_char redist_metric_flag;
134 u_int32_t redist_metric;
135
136 /* BGP redistribute route-map. */
137 struct bgp_rmap rmap;
138};
139
ad4cbda1 140/*
141 * Type of 'struct bgp'.
142 * - Default: The default instance
143 * - VRF: A specific (non-default) VRF
144 * - View: An instance used for route exchange
145 * The "default" instance is treated separately to simplify the code. Note
146 * that if deployed in a Multi-VRF environment, it may not exist.
147 */
148enum bgp_instance_type
149{
150 BGP_INSTANCE_TYPE_DEFAULT,
151 BGP_INSTANCE_TYPE_VRF,
152 BGP_INSTANCE_TYPE_VIEW
153};
154
718e3744 155/* BGP instance structure. */
156struct bgp
157{
158 /* AS number of this BGP instance. */
159 as_t as;
160
161 /* Name of this BGP instance. */
162 char *name;
6aeb9e78 163
ad4cbda1 164 /* Type of instance and VRF id. */
165 enum bgp_instance_type inst_type;
6aeb9e78 166 vrf_id_t vrf_id;
200df115 167
0088b5dc
SH		 168 /* Reference count to allow peer_delete to finish after bgp_delete */
169 int lock;
170
718e3744 171 /* Self peer. */
172 struct peer *peer_self;
173
174 /* BGP peer. */
175 struct list *peer;
dd793e4a 176 struct hash *peerhash;
718e3744 177
178 /* BGP peer group. */
179 struct list *group;
180
f14e6fdb
DS		 181 /* The maximum number of BGP dynamic neighbors that can be created */
182 int dynamic_neighbors_limit;
183
184 /* The current number of BGP dynamic neighbors */
185 int dynamic_neighbors_count;
186
3f9c7369
DS		 187 struct hash *update_groups[BGP_AF_MAX];
188
189 /*
190 * Global statistics for update groups.
191 */
192 struct {
193 u_int32_t join_events;
194 u_int32_t prune_events;
195 u_int32_t merge_events;
196 u_int32_t split_events;
197 u_int32_t updgrp_switch_events;
198 u_int32_t peer_refreshes_combined;
199 u_int32_t adj_count;
200 u_int32_t merge_checks_triggered;
201
202 u_int32_t updgrps_created;
203 u_int32_t updgrps_deleted;
204 u_int32_t subgrps_created;
205 u_int32_t subgrps_deleted;
206 } update_group_stats;
207
718e3744 208 /* BGP configuration. */
209 u_int16_t config;
c2d58d6d 210#define BGP_CONFIG_CLUSTER_ID (1 << 0)
211#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 212
213 /* BGP router identifier. */
214 struct in_addr router_id;
18a6dce6 215 struct in_addr router_id_static;
6aeb9e78 216 struct in_addr router_id_zebra;
718e3744 217
218 /* BGP route reflector cluster ID. */
219 struct in_addr cluster_id;
220
221 /* BGP confederation information. */
222 as_t confed_id;
223 as_t *confed_peers;
224 int confed_peers_cnt;
225
abc920f8
DS		 226 struct thread *t_startup; /* start-up timer on only once at the beginning */
227
228 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
229#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
230 u_int32_t maxmed_onstartup_value; /* Max-med value when active on start-up */
231 struct thread *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
232 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
233
234 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
235#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
236 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on */
237#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
238
239 u_char maxmed_active; /* 1/0 if max-med is active or not */
240 u_int32_t maxmed_value; /* Max-med value when its active */
fe7d2a48 241
f188f2c4
DS		 242 /* BGP update delay on startup */
243 struct thread *t_update_delay;
244 struct thread *t_establish_wait;
245 u_char update_delay_over;
4a16ae86
DS		 246 u_char main_zebra_update_hold;
247 u_char main_peers_update_hold;
f188f2c4
DS		 248 u_int16_t v_update_delay;
249 u_int16_t v_establish_wait;
250 char update_delay_begin_time[64];
251 char update_delay_end_time[64];
4a16ae86
DS		 252 char update_delay_zebra_resume_time[64];
253 char update_delay_peers_resume_time[64];
f188f2c4
DS		 254 u_int32_t established;
255 u_int32_t restarted_peers;
256 u_int32_t implicit_eors;
257 u_int32_t explicit_eors;
258#define BGP_UPDATE_DELAY_DEF 0
259#define BGP_UPDATE_DELAY_MIN 0
260#define BGP_UPDATE_DELAY_MAX 3600
261
718e3744 262 /* BGP flags. */
8bd9d948 263 u_int32_t flags;
718e3744 264#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
265#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
266#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
267#define BGP_FLAG_MED_CONFED (1 << 3)
268#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
269#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
270#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
271#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
272#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
273#define BGP_FLAG_IMPORT_CHECK (1 << 9)
274#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 275#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 276#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 277#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 278#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 279#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 280#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 281#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 282#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 283#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
bb86c601 284#define BGP_FLAG_DELETING (1 << 20)
718e3744 285
286 /* BGP Per AF flags */
287 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
288#define BGP_CONFIG_DAMPENING (1 << 0)
289
6aeb9e78
DS		 290 /* Route table for next-hop lookup cache. */
291 struct bgp_table *nexthop_cache_table[AFI_MAX];
292
293 /* Route table for import-check */
294 struct bgp_table *import_check_table[AFI_MAX];
295
296 struct bgp_table *connected_table[AFI_MAX];
297
298 struct hash *address_hash;
299
718e3744 300 /* Static route configuration. */
301 struct bgp_table *route[AFI_MAX][SAFI_MAX];
302
303 /* Aggregate address configuration. */
304 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
305
306 /* BGP routing information base. */
307 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
308
73ac8160
DS		 309 /* BGP table route-map. */
310 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
311
718e3744 312 /* BGP redistribute configuration. */
7c8ff89e 313 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 314
0de4848d
DS		 315 /* timer to re-evaluate neighbor default-originate route-maps */
316 struct thread *t_rmap_def_originate_eval;
317#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
318
718e3744 319 /* BGP distance configuration. */
320 u_char distance_ebgp;
321 u_char distance_ibgp;
322 u_char distance_local;
323
324 /* BGP default local-preference. */
325 u_int32_t default_local_pref;
326
3f9c7369
DS		 327 /* BGP default subgroup pkt queue max */
328 u_int32_t default_subgroup_pkt_queue_max;
329
718e3744 330 /* BGP default timer. */
331 u_int32_t default_holdtime;
332 u_int32_t default_keepalive;
538621f2 333
334 /* BGP graceful restart */
93406d87 335 u_int32_t restart_time;
336 u_int32_t stalepath_time;
165b5fff
JB		 337
338 /* Maximum-paths configuration */
339 struct bgp_maxpaths_cfg {
340 u_int16_t maxpaths_ebgp;
341 u_int16_t maxpaths_ibgp;
5e242b0d
DS		 342 u_int16_t ibgp_flags;
343#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
165b5fff 344 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9
DS		 345
346 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
3f9c7369 347 u_int32_t coalesce_time;
adbac85e
DW		 348
349 u_int32_t addpath_tx_id;
350 int addpath_tx_used[AFI_MAX][SAFI_MAX];
718e3744 351};
352
2a3d5731 353#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 354
ad4cbda1 355#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
356 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT || \
5c81a5f3 357 (bgp->inst_type == BGP_INSTANCE_TYPE_VRF && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 358
718e3744 359/* BGP peer-group support. */
360struct peer_group
361{
362 /* Name of the peer-group. */
363 char *name;
364
365 /* Pointer to BGP. */
366 struct bgp *bgp;
367
368 /* Peer-group client list. */
369 struct list *peer;
370
f14e6fdb
DS		 371 /** Dynamic neighbor listening ranges */
372 struct list *listen_range[AFI_MAX];
373
718e3744 374 /* Peer-group config */
375 struct peer *conf;
376};
377
378/* BGP Notify message format. */
379struct bgp_notify
380{
381 u_char code;
382 u_char subcode;
383 char *data;
384 bgp_size_t length;
385};
386
387/* Next hop self address. */
388struct bgp_nexthop
389{
390 struct interface *ifp;
391 struct in_addr v4;
392#ifdef HAVE_IPV6
393 struct in6_addr v6_global;
394 struct in6_addr v6_local;
395#endif /* HAVE_IPV6 */
396};
397
a82478b9
DS		 398/* BGP addpath values */
399#define BGP_ADDPATH_RX 1
400#define BGP_ADDPATH_TX 2
401#define BGP_ADDPATH_ID_LEN 4
402
adbac85e
DW		 403#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
404
718e3744 405/* BGP router distinguisher value. */
406#define BGP_RD_SIZE 8
407
408struct bgp_rd
409{
410 u_char val[BGP_RD_SIZE];
411};
412
2a3d5731
DW		 413#define RMAP_IN 0
414#define RMAP_OUT 1
415#define RMAP_MAX 2
fee0f4c6 416
718e3744 417/* BGP filter structure. */
418struct bgp_filter
419{
420 /* Distribute-list. */
421 struct
422 {
423 char *name;
424 struct access_list *alist;
425 } dlist[FILTER_MAX];
426
427 /* Prefix-list. */
428 struct
429 {
430 char *name;
431 struct prefix_list *plist;
432 } plist[FILTER_MAX];
433
434 /* Filter-list. */
435 struct
436 {
437 char *name;
438 struct as_list *aslist;
439 } aslist[FILTER_MAX];
440
441 /* Route-map. */
442 struct
443 {
444 char *name;
445 struct route_map *map;
fee0f4c6 446 } map[RMAP_MAX];
718e3744 447
448 /* Unsuppress-map. */
449 struct
450 {
451 char *name;
452 struct route_map *map;
453 } usmap;
454};
455
6d85b15b
JBD		 456/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
457 a peer who's AS is part of our Confederation. */
458typedef enum
459{
460 BGP_PEER_IBGP = 1,
461 BGP_PEER_EBGP,
462 BGP_PEER_INTERNAL,
463 BGP_PEER_CONFED,
464} bgp_peer_sort_t;
465
d6661008
DS		 466/* BGP message header and packet size. */
467#define BGP_MARKER_SIZE 16
468#define BGP_HEADER_SIZE 19
469#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 470#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 471
3f9c7369
DS		 472/*
473 * Trigger delay for bgp_announce_route().
474 */
475#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
476#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
477
478struct peer_af
479{
480 /* back pointer to the peer */
481 struct peer *peer;
482
483 /* which subgroup the peer_af belongs to */
484 struct update_subgroup *subgroup;
485
486 /* for being part of an update subgroup's peer list */
487 LIST_ENTRY(peer_af) subgrp_train;
488
489 /* for being part of a packet's peer list */
490 LIST_ENTRY(peer_af) pkt_train;
491
492 struct bpacket *next_pkt_to_send;
493
494 /*
495 * Trigger timer for bgp_announce_route().
496 */
497 struct thread *t_announce_route;
498
499 afi_t afi;
500 safi_t safi;
501 int afid;
502};
503
718e3744 504/* BGP neighbor structure. */
505struct peer
506{
507 /* BGP structure. */
508 struct bgp *bgp;
509
200df115 510 /* reference count, primarily to allow bgp_process'ing of route_node's
511 * to be done after a struct peer is deleted.
512 *
513 * named 'lock' for hysterical reasons within Quagga.
514 */
515 int lock;
516
718e3744 517 /* BGP peer group. */
518 struct peer_group *group;
3f9c7369
DS		 519 u_int64_t version[AFI_MAX][SAFI_MAX];
520
521 /* BGP peer_af structures, per configured AF on this peer */
522 struct peer_af *peer_af_array[BGP_AF_MAX];
718e3744 523
524 /* Peer's remote AS number. */
0299c004
DS		 525 int as_type;
526 as_t as;
718e3744 527
528 /* Peer's local AS number. */
529 as_t local_as;
530
6d85b15b
JBD		 531 bgp_peer_sort_t sort;
532
718e3744 533 /* Peer's Change local AS number. */
534 as_t change_local_as;
535
536 /* Remote router ID. */
537 struct in_addr remote_id;
538
539 /* Local router ID. */
540 struct in_addr local_id;
541
542 /* Packet receive and send buffer. */
543 struct stream *ibuf;
544 struct stream_fifo *obuf;
545 struct stream *work;
546
8c71e481
PM		 547 /* We use a separate stream to encode MP_REACH_NLRI for efficient
548 * NLRI packing. peer->work stores all the other attributes. The
549 * actual packet is then constructed by concatenating the two.
550 */
551 struct stream *scratch;
552
1ff9a340
DS		 553 /* the doppelganger peer structure, due to dual TCP conn setup */
554 struct peer *doppelganger;
555
718e3744 556 /* Status of the peer. */
557 int status;
558 int ostatus;
559
6403814c
DS		 560 /* FSM events, stored for debug purposes.
561 * Note: uchar used for reduced memory usage.
562 */
563 unsigned char cur_event;
564 unsigned char last_event;
565 unsigned char last_major_event;
566
0b2aa3a0
PJ		 567 /* Peer index, used for dumping TABLE_DUMP_V2 format */
568 uint16_t table_dump_index;
569
718e3744 570 /* Peer information */
eb821189 571 int fd; /* File descriptor */
572 int ttl; /* TTL of TCP connection to the peer. */
baa376fc 573 int rtt; /* Estimated round-trip-time from TCP_INFO */
fa411a21 574 int gtsm_hops; /* minimum hopcount to peer */
eb821189 575 char *desc; /* Description of the peer. */
576 unsigned short port; /* Destination port for peer */
577 char *host; /* Printable address of the peer. */
578 union sockunion su; /* Sockunion address of the peer. */
a80beece 579#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
eb821189 580 time_t uptime; /* Last Up/Down time */
581 time_t readtime; /* Last read time */
582 time_t resettime; /* Last reset time */
718e3744 583
eb821189 584 unsigned int ifindex; /* ifindex of the BGP connection. */
a80beece 585 char *conf_if; /* neighbor interface config name. */
4a04e5f7 586 struct interface *ifp; /* corresponding interface */
eb821189 587 char *ifname; /* bind interface name. */
588 char *update_if;
589 union sockunion *update_source;
eb821189 590
591 union sockunion *su_local; /* Sockunion of local address. */
592 union sockunion *su_remote; /* Sockunion of remote address. */
593 int shared_network; /* Is this peer shared same network. */
594 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 595
596 /* Peer address family configuration. */
597 u_char afc[AFI_MAX][SAFI_MAX];
598 u_char afc_nego[AFI_MAX][SAFI_MAX];
599 u_char afc_adv[AFI_MAX][SAFI_MAX];
600 u_char afc_recv[AFI_MAX][SAFI_MAX];
601
0a486e5f 602 /* Capability flags (reset in bgp_stop) */
6410e93a 603 u_int32_t cap;
718e3744 604#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
605#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
606#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
607#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
608#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 609#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
610#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 611#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
612#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 613#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
614#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 615#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
616#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 617#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
618#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 619#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
620#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 621
0a486e5f 622 /* Capability flags (reset in bgp_stop) */
04b6bdc0 623 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 624#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
625#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
626#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
627#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
628#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
629#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 630#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
631#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 632#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
633#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
634#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
635#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 636#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
637#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
638#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 639
640 /* Global configuration flags. */
641 u_int32_t flags;
642#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
643#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
644#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
645#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
646#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 647#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 648#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 649#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 650#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 651#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
652#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 653#define PEER_FLAG_LONESOUL (1 << 11)
654#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
655#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 656#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
718e3744 657
93406d87 658 /* NSF mode (graceful restart) */
659 u_char nsf[AFI_MAX][SAFI_MAX];
660
718e3744 661 /* Per AF configuration flags. */
662 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
663#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
664#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
665#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
666#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
667#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
668#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
669#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
670#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
671#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
672#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
673#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
674#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
675#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
676#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
677#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
678#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 679#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 680#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 681#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
682#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 683#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 684#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 685#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 686#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
0df7c91f
PJ		 687
688 /* MD5 password */
689 char *password;
718e3744 690
691 /* default-originate route-map. */
692 struct
693 {
694 char *name;
695 struct route_map *map;
696 } default_rmap[AFI_MAX][SAFI_MAX];
697
698 /* Peer status flags. */
699 u_int16_t sflags;
700#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
701#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
702#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
703#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
704#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 705#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
706#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 707
0a486e5f 708 /* Peer status af flags (reset in bgp_stop) */
718e3744 709 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
710#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
711#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 712#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
713#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
714#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
715#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 716
718e3744 717 /* Default attribute value for the peer. */
718 u_int32_t config;
719#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
720#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
721#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
722#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
8ffedcea 723
718e3744 724 u_int32_t weight;
725 u_int32_t holdtime;
726 u_int32_t keepalive;
727 u_int32_t connect;
728 u_int32_t routeadv;
729
730 /* Timer values. */
731 u_int32_t v_start;
732 u_int32_t v_connect;
733 u_int32_t v_holdtime;
734 u_int32_t v_keepalive;
718e3744 735 u_int32_t v_routeadv;
0a486e5f 736 u_int32_t v_pmax_restart;
93406d87 737 u_int32_t v_gr_restart;
718e3744 738
739 /* Threads. */
740 struct thread *t_read;
741 struct thread *t_write;
742 struct thread *t_start;
743 struct thread *t_connect;
744 struct thread *t_holdtime;
745 struct thread *t_keepalive;
718e3744 746 struct thread *t_routeadv;
0a486e5f 747 struct thread *t_pmax_restart;
93406d87 748 struct thread *t_gr_restart;
749 struct thread *t_gr_stale;
64e580a7
PJ		 750
751 /* workqueues */
752 struct work_queue *clear_node_queue;
753
718e3744 754 /* Statistics field */
755 u_int32_t open_in; /* Open message input count */
756 u_int32_t open_out; /* Open message output count */
757 u_int32_t update_in; /* Update message input count */
758 u_int32_t update_out; /* Update message ouput count */
759 time_t update_time; /* Update message received time. */
760 u_int32_t keepalive_in; /* Keepalive input count */
761 u_int32_t keepalive_out; /* Keepalive output count */
762 u_int32_t notify_in; /* Notify input count */
763 u_int32_t notify_out; /* Notify output count */
764 u_int32_t refresh_in; /* Route Refresh input count */
765 u_int32_t refresh_out; /* Route Refresh output count */
766 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
767 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
768
769 /* BGP state count */
770 u_int32_t established; /* Established */
771 u_int32_t dropped; /* Dropped */
772
f188f2c4
DS		 773 /* Update delay related fields */
774 u_char update_delay_over; /* When this is set, BGP is no more waiting for EOR */
775
718e3744 776 /* Syncronization list and time. */
777 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
778 time_t synctime;
cb1faec9 779 time_t last_write; /* timestamp when the last UPDATE msg was written */
718e3744 780
781 /* Send prefix count. */
782 unsigned long scount[AFI_MAX][SAFI_MAX];
783
784 /* Announcement attribute hash. */
785 struct hash *hash[AFI_MAX][SAFI_MAX];
786
787 /* Notify data. */
788 struct bgp_notify notify;
789
790 /* Whole packet size to be read. */
791 unsigned long packet_size;
792
793 /* Filter structure. */
794 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
795
796 /* ORF Prefix-list */
797 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
798
16286195
DS		 799 /* Text description of last attribute rcvd */
800 char rcvd_attr_str[BUFSIZ];
801
802 /* Track if we printed the attribute in debugs */
803 int rcvd_attr_printed;
804
718e3744 805 /* Prefix count. */
806 unsigned long pcount[AFI_MAX][SAFI_MAX];
807
808 /* Max prefix count. */
809 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 810 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 811 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 812#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 813
814 /* allowas-in. */
815 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 816
e0701b79 817 /* peer reset cause */
818 char last_reset;
819#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
820#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
821#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
822#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
823#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
824#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
825#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
826#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
827#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
828#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
829#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
830#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
831#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
832#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
833#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
834#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
835#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
836#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
837#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
838#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
839#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 840#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 841#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 842#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 843#define PEER_DOWN_IF_DOWN 25 /* Interface down */
844#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d6661008
DS		 845unsigned long last_reset_cause_size;
846u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 847
ac41b2a2 848 /* The kind of route-map Flags.*/
849 u_char rmap_type;
850#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
851#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
852#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
853#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
854#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
855#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 856#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
857#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 858
c43ed2e4 859 /* peer specific BFD information */
88177fe3 860 struct bfd_info *bfd_info;
04b6bdc0
DW		 861
862 /* hostname and domainname advertised by host */
863 char *hostname;
864 char *domainname;
718e3744 865};
866
ad4cbda1 867/* Check if suppress start/restart of sessions to peer. */
868#define BGP_PEER_START_SUPPRESSED(P) \
869 (CHECK_FLAG ((P)->flags, PEER_FLAG_SHUTDOWN) \
870 || CHECK_FLAG ((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
871
0df7c91f
PJ		 872#define PEER_PASSWORD_MINLEN (1)
873#define PEER_PASSWORD_MAXLEN (80)
874
718e3744 875/* This structure's member directly points incoming packet data
876 stream. */
877struct bgp_nlri
878{
879 /* AFI. */
880 afi_t afi;
881
882 /* SAFI. */
883 safi_t safi;
884
885 /* Pointer to NLRI byte stream. */
886 u_char *nlri;
887
888 /* Length of whole NLRI. */
889 bgp_size_t length;
890};
891
892/* BGP versions. */
893#define BGP_VERSION_4 4
718e3744 894
895/* Default BGP port number. */
896#define BGP_PORT_DEFAULT 179
897
718e3744 898/* BGP minimum message size. */
899#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
900#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
901#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
902#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
903#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
904#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
905
906/* BGP message types. */
907#define BGP_MSG_OPEN 1
908#define BGP_MSG_UPDATE 2
909#define BGP_MSG_NOTIFY 3
910#define BGP_MSG_KEEPALIVE 4
911#define BGP_MSG_ROUTE_REFRESH_NEW 5
912#define BGP_MSG_CAPABILITY 6
913#define BGP_MSG_ROUTE_REFRESH_OLD 128
914
915/* BGP open optional parameter. */
916#define BGP_OPEN_OPT_AUTH 1
917#define BGP_OPEN_OPT_CAP 2
918
919/* BGP4 attribute type codes. */
920#define BGP_ATTR_ORIGIN 1
921#define BGP_ATTR_AS_PATH 2
922#define BGP_ATTR_NEXT_HOP 3
923#define BGP_ATTR_MULTI_EXIT_DISC 4
924#define BGP_ATTR_LOCAL_PREF 5
925#define BGP_ATTR_ATOMIC_AGGREGATE 6
926#define BGP_ATTR_AGGREGATOR 7
927#define BGP_ATTR_COMMUNITIES 8
928#define BGP_ATTR_ORIGINATOR_ID 9
929#define BGP_ATTR_CLUSTER_LIST 10
930#define BGP_ATTR_DPA 11
931#define BGP_ATTR_ADVERTISER 12
932#define BGP_ATTR_RCID_PATH 13
933#define BGP_ATTR_MP_REACH_NLRI 14
934#define BGP_ATTR_MP_UNREACH_NLRI 15
935#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 936#define BGP_ATTR_AS4_PATH 17
937#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 938#define BGP_ATTR_AS_PATHLIMIT 21
718e3744 939
940/* BGP update origin. */
941#define BGP_ORIGIN_IGP 0
942#define BGP_ORIGIN_EGP 1
943#define BGP_ORIGIN_INCOMPLETE 2
944
945/* BGP notify message codes. */
946#define BGP_NOTIFY_HEADER_ERR 1
947#define BGP_NOTIFY_OPEN_ERR 2
948#define BGP_NOTIFY_UPDATE_ERR 3
949#define BGP_NOTIFY_HOLD_ERR 4
950#define BGP_NOTIFY_FSM_ERR 5
951#define BGP_NOTIFY_CEASE 6
952#define BGP_NOTIFY_CAPABILITY_ERR 7
953#define BGP_NOTIFY_MAX 8
954
4b4e07d2
DT		 955#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
956
718e3744 957/* BGP_NOTIFY_HEADER_ERR sub codes. */
958#define BGP_NOTIFY_HEADER_NOT_SYNC 1
959#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
960#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
961#define BGP_NOTIFY_HEADER_MAX 4
962
963/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 964#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 965#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
966#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
967#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
968#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
969#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
970#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
971#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
972#define BGP_NOTIFY_OPEN_MAX 8
973
974/* BGP_NOTIFY_UPDATE_ERR sub codes. */
975#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
976#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
977#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
978#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
979#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
980#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
981#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
982#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
983#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
984#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
985#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
986#define BGP_NOTIFY_UPDATE_MAX 12
987
4b4e07d2 988/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 989#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
990#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
991#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
992#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
993#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
994#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 995#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
996#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
997#define BGP_NOTIFY_CEASE_MAX 9
718e3744 998
999/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1000#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1001#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1002#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
1003#define BGP_NOTIFY_CAPABILITY_MAX 4
1004
1005/* BGP finite state machine status. */
1006#define Idle 1
1007#define Connect 2
1008#define Active 3
1009#define OpenSent 4
1010#define OpenConfirm 5
1011#define Established 6
ca058a30
PJ		 1012#define Clearing 7
1013#define Deleted 8
1014#define BGP_STATUS_MAX 9
718e3744 1015
1016/* BGP finite state machine events. */
1017#define BGP_Start 1
1018#define BGP_Stop 2
1019#define TCP_connection_open 3
1020#define TCP_connection_closed 4
1021#define TCP_connection_open_failed 5
1022#define TCP_fatal_error 6
1023#define ConnectRetry_timer_expired 7
1024#define Hold_Timer_expired 8
1025#define KeepAlive_timer_expired 9
1026#define Receive_OPEN_message 10
1027#define Receive_KEEPALIVE_message 11
1028#define Receive_UPDATE_message 12
1029#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1030#define Clearing_Completed 14
1031#define BGP_EVENTS_MAX 15
718e3744 1032
1033/* BGP timers default value. */
5ca5f1c8 1034#define BGP_INIT_START_TIMER 1
3fd8c527
DW		 1035#define BGP_DEFAULT_HOLDTIME 9
1036#define BGP_DEFAULT_KEEPALIVE 3
12179ba3 1037#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1038#define BGP_DEFAULT_IBGP_ROUTEADV 0
23a1f277 1039#define BGP_DEFAULT_CONNECT_RETRY 10
718e3744 1040
1041/* BGP default local preference. */
1042#define BGP_DEFAULT_LOCAL_PREF 100
1043
3f9c7369
DS		 1044/* BGP default subgroup packet queue max . */
1045#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1046
538621f2 1047/* BGP graceful restart */
1048#define BGP_DEFAULT_RESTART_TIME 120
1049#define BGP_DEFAULT_STALEPATH_TIME 360
1050
42e6d745
DO		 1051/* RFC4364 */
1052#define SAFI_MPLS_LABELED_VPN 128
718e3744 1053
718e3744 1054/* BGP uptime string length. */
1055#define BGP_UPTIME_LEN 25
1056
1057/* Default configuration settings for bgpd. */
1058#define BGP_VTY_PORT 2605
718e3744 1059#define BGP_DEFAULT_CONFIG "bgpd.conf"
1060
1061/* Check AS path loop when we send NLRI. */
1062/* #define BGP_SEND_ASPATH_CHECK */
1063
f14e6fdb
DS		 1064/* BGP Dynamic Neighbors feature */
1065#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1066#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1067#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1068
718e3744 1069/* Flag for peer_clear_soft(). */
1070enum bgp_clear_type
1071{
1072 BGP_CLEAR_SOFT_NONE,
1073 BGP_CLEAR_SOFT_OUT,
1074 BGP_CLEAR_SOFT_IN,
1075 BGP_CLEAR_SOFT_BOTH,
2a3d5731 1076 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1077};
1078
1079/* Macros. */
1080#define BGP_INPUT(P) ((P)->ibuf)
1081#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
6aa136f1
VS		 1082#define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
1083 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1084
718e3744 1085/* BGP error codes. */
1086#define BGP_SUCCESS 0
1087#define BGP_ERR_INVALID_VALUE -1
1088#define BGP_ERR_INVALID_FLAG -2
1089#define BGP_ERR_INVALID_AS -3
1090#define BGP_ERR_INVALID_BGP -4
1091#define BGP_ERR_PEER_GROUP_MEMBER -5
1092#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1093#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1094#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1095#define BGP_ERR_PEER_GROUP_MISMATCH -9
1096#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1097#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1098#define BGP_ERR_AS_MISMATCH -12
1099#define BGP_ERR_PEER_FLAG_CONFLICT -13
1100#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1101#define BGP_ERR_PEER_FILTER_CONFLICT -15
1102#define BGP_ERR_NOT_INTERNAL_PEER -16
1103#define BGP_ERR_REMOVE_PRIVATE_AS -17
1104#define BGP_ERR_AF_UNCONFIGURED -18
1105#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1106#define BGP_ERR_INSTANCE_MISMATCH -20
1107#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1108#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1109#define BGP_ERR_TCPSIG_FAILED -23
1110#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1111#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1112#define BGP_ERR_NO_INTERFACE_CONFIG -26
1113#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1114#define BGP_ERR_AS_OVERRIDE -28
1115#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1116#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1117#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1118#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1119#define BGP_ERR_MAX -33
718e3744 1120
3f9c7369
DS		 1121/*
1122 * Enumeration of different policy kinds a peer can be configured with.
1123 */
1124typedef enum
1125{
1126 BGP_POLICY_ROUTE_MAP,
1127 BGP_POLICY_FILTER_LIST,
1128 BGP_POLICY_PREFIX_LIST,
1129 BGP_POLICY_DISTRIBUTE_LIST,
1130} bgp_policy_type_e;
1131
718e3744 1132extern struct bgp_master *bm;
1133
718e3744 1134/* Prototypes. */
94f2b392 1135extern void bgp_terminate (void);
1136extern void bgp_reset (void);
65957886 1137extern time_t bgp_clock (void);
94f2b392 1138extern void bgp_zclient_reset (void);
1139extern int bgp_nexthop_set (union sockunion *, union sockunion *,
718e3744 1140 struct bgp_nexthop *, struct peer *);
94f2b392 1141extern struct bgp *bgp_get_default (void);
1142extern struct bgp *bgp_lookup (as_t, const char *);
1143extern struct bgp *bgp_lookup_by_name (const char *);
6aeb9e78 1144extern struct bgp *bgp_lookup_by_vrf_id (vrf_id_t);
94f2b392 1145extern struct peer *peer_lookup (struct bgp *, union sockunion *);
a80beece 1146extern struct peer *peer_lookup_by_conf_if (struct bgp *, const char *);
04b6bdc0 1147extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
a80beece 1148extern void bgp_peer_conf_if_to_su_update (struct peer *);
ffd0c037 1149extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
94f2b392 1150extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
1151extern struct peer_group *peer_group_get (struct bgp *, const char *);
f14e6fdb
DS		 1152extern struct peer *peer_create_bind_dynamic_neighbor (struct bgp *,
1153 union sockunion *, struct peer_group *);
1154extern struct prefix *peer_group_lookup_dynamic_neighbor_range (
1155 struct peer_group *, struct prefix *);
1156extern struct peer_group *peer_group_lookup_dynamic_neighbor (struct bgp *,
1157 struct prefix *, struct prefix **);
1158extern struct peer *peer_lookup_dynamic_neighbor (struct bgp *,
1159 union sockunion *);
1160extern void peer_drop_dynamic_neighbor (struct peer *);
28066f4b
DS		 1161
1162/*
1163 * Peers are incredibly easy to memory leak
1164 * due to the various ways that they are actually used
1165 * Provide some functionality to debug locks and unlocks
1166 */
1167extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1168extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1169#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1170#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1171
6d85b15b 1172extern bgp_peer_sort_t peer_sort (struct peer *peer);
94f2b392 1173extern int peer_active (struct peer *);
1174extern int peer_active_nego (struct peer *);
06370dac 1175extern void bgp_recalculate_all_bestpaths (struct bgp *bgp);
a80beece 1176extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
f813b13b 1177 as_t, as_t, int, afi_t, safi_t, struct peer_group *);
94f2b392 1178extern struct peer *peer_create_accept (struct bgp *);
1ff9a340 1179extern void peer_xfer_config (struct peer *dst, struct peer *src);
856ca177
MS		 1180extern char *peer_uptime (time_t, char *, size_t, u_char, json_object *);
1181
94f2b392 1182extern int bgp_config_write (struct vty *);
1183extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
6b0655a2 1184
94f2b392 1185extern void bgp_master_init (void);
718e3744 1186
94f2b392 1187extern void bgp_init (void);
1188extern void bgp_route_map_init (void);
4c48cf63 1189extern void bgp_session_reset (struct peer *);
718e3744 1190
94f2b392 1191extern int bgp_option_set (int);
1192extern int bgp_option_unset (int);
1193extern int bgp_option_check (int);
718e3744 1194
ad4cbda1 1195extern int bgp_get (struct bgp **, as_t *, const char *, enum bgp_instance_type);
6aeb9e78
DS		 1196extern void bgp_instance_up (struct bgp *);
1197extern void bgp_instance_down (struct bgp *);
94f2b392 1198extern int bgp_delete (struct bgp *);
718e3744 1199
94f2b392 1200extern int bgp_flag_set (struct bgp *, int);
1201extern int bgp_flag_unset (struct bgp *, int);
1202extern int bgp_flag_check (struct bgp *, int);
718e3744 1203
0088b5dc
SH		 1204extern void bgp_lock (struct bgp *);
1205extern void bgp_unlock (struct bgp *);
1206
94f2b392 1207extern int bgp_router_id_set (struct bgp *, struct in_addr *);
718e3744 1208
94f2b392 1209extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
1210extern int bgp_cluster_id_unset (struct bgp *);
718e3744 1211
94f2b392 1212extern int bgp_confederation_id_set (struct bgp *, as_t);
1213extern int bgp_confederation_id_unset (struct bgp *);
1214extern int bgp_confederation_peers_check (struct bgp *, as_t);
718e3744 1215
94f2b392 1216extern int bgp_confederation_peers_add (struct bgp *, as_t);
1217extern int bgp_confederation_peers_remove (struct bgp *, as_t);
718e3744 1218
94f2b392 1219extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
1220extern int bgp_timers_unset (struct bgp *);
718e3744 1221
94f2b392 1222extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
1223extern int bgp_default_local_preference_unset (struct bgp *);
718e3744 1224
3f9c7369
DS		 1225extern int bgp_default_subgroup_pkt_queue_max_set (struct bgp *bgp, u_int32_t);
1226extern int bgp_default_subgroup_pkt_queue_max_unset (struct bgp *bgp);
1227
f14e6fdb
DS		 1228extern int bgp_listen_limit_set (struct bgp *, int);
1229extern int bgp_listen_limit_unset (struct bgp *);
1230
f188f2c4
DS		 1231extern int bgp_update_delay_active (struct bgp *);
1232extern int bgp_update_delay_configured (struct bgp *);
0299c004 1233extern void peer_as_change (struct peer *, as_t, int);
a80beece 1234extern int peer_remote_as (struct bgp *, union sockunion *,const char *, as_t *,
0299c004
DS		 1235 int, afi_t, safi_t);
1236extern int peer_group_remote_as (struct bgp *, const char *, as_t *, int);
94f2b392 1237extern int peer_delete (struct peer *peer);
1238extern int peer_group_delete (struct peer_group *);
1239extern int peer_group_remote_as_delete (struct peer_group *);
f14e6fdb 1240extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1241
94f2b392 1242extern int peer_activate (struct peer *, afi_t, safi_t);
1243extern int peer_deactivate (struct peer *, afi_t, safi_t);
718e3744 1244
a80beece 1245extern int peer_group_bind (struct bgp *, union sockunion *, struct peer *,
c8560b44
DW		 1246 struct peer_group *, as_t *);
1247extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *);
718e3744 1248
94f2b392 1249extern int peer_flag_set (struct peer *, u_int32_t);
1250extern int peer_flag_unset (struct peer *, u_int32_t);
718e3744 1251
94f2b392 1252extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
1253extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
1254extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1255
94f2b392 1256extern int peer_ebgp_multihop_set (struct peer *, int);
1257extern int peer_ebgp_multihop_unset (struct peer *);
c43ed2e4 1258extern int is_ebgp_multihop_configured (struct peer *peer);
718e3744 1259
94f2b392 1260extern int peer_description_set (struct peer *, char *);
1261extern int peer_description_unset (struct peer *);
718e3744 1262
94f2b392 1263extern int peer_update_source_if_set (struct peer *, const char *);
1264extern int peer_update_source_addr_set (struct peer *, union sockunion *);
1265extern int peer_update_source_unset (struct peer *);
718e3744 1266
94f2b392 1267extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
1268extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
718e3744 1269
94f2b392 1270extern int peer_port_set (struct peer *, u_int16_t);
1271extern int peer_port_unset (struct peer *);
718e3744 1272
1f9a9fff
PJ		 1273extern int peer_weight_set (struct peer *, u_int16_t);
1274extern int peer_weight_unset (struct peer *);
718e3744 1275
94f2b392 1276extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
1277extern int peer_timers_unset (struct peer *);
718e3744 1278
94f2b392 1279extern int peer_timers_connect_set (struct peer *, u_int32_t);
1280extern int peer_timers_connect_unset (struct peer *);
718e3744 1281
94f2b392 1282extern int peer_advertise_interval_set (struct peer *, u_int32_t);
1283extern int peer_advertise_interval_unset (struct peer *);
718e3744 1284
ffd0c037
DS		 1285extern void peer_interface_set (struct peer *, const char *);
1286extern void peer_interface_unset (struct peer *);
718e3744 1287
94f2b392 1288extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
1289extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
718e3744 1290
94f2b392 1291extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
1292extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
718e3744 1293
9d3f9705 1294extern int peer_local_as_set (struct peer *, as_t, int, int);
94f2b392 1295extern int peer_local_as_unset (struct peer *);
718e3744 1296
94f2b392 1297extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
1298extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
718e3744 1299
94f2b392 1300extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
1301extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
718e3744 1302
94f2b392 1303extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
1304extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
718e3744 1305
94f2b392 1306extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
0df7c91f
PJ		 1307
1308extern int peer_password_set (struct peer *, const char *);
1309extern int peer_password_unset (struct peer *);
1310
94f2b392 1311extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
718e3744 1312
94f2b392 1313extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
1314extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
718e3744 1315
1ff9a340 1316extern int peer_clear (struct peer *, struct listnode **);
94f2b392 1317extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1318
fa411a21
NH		 1319extern int peer_ttl_security_hops_set (struct peer *, int);
1320extern int peer_ttl_security_hops_unset (struct peer *);
1321
518f0eb1
DS		 1322extern int bgp_route_map_update_timer (struct thread *thread);
1323extern void bgp_route_map_terminate(void);
16286195
DS		 1324
1325extern int peer_cmp (struct peer *p1, struct peer *p2);
3f9c7369
DS		 1326
1327extern struct peer_af * peer_af_create (struct peer *, afi_t, safi_t);
1328extern struct peer_af * peer_af_find (struct peer *, afi_t, safi_t);
1329extern int peer_af_delete (struct peer *, afi_t, safi_t);
1330
ffd0c037
DS		 1331extern void bgp_close(void);
1332
3f9c7369
DS		 1333static inline int
1334afindex (afi_t afi, safi_t safi)
1335{
1336 switch (afi)
1337 {
1338 case AFI_IP:
1339 switch (safi)
1340 {
1341 case SAFI_UNICAST:
1342 return BGP_AF_IPV4_UNICAST;
1343 break;
1344 case SAFI_MULTICAST:
1345 return BGP_AF_IPV4_MULTICAST;
1346 break;
1347 case SAFI_MPLS_VPN:
1348 return BGP_AF_IPV4_VPN;
1349 break;
1350 default:
1351 return BGP_AF_MAX;
1352 break;
1353 }
1354 break;
1355 case AFI_IP6:
1356 switch (safi)
1357 {
1358 case SAFI_UNICAST:
1359 return BGP_AF_IPV6_UNICAST;
1360 break;
1361 case SAFI_MULTICAST:
1362 return BGP_AF_IPV6_MULTICAST;
1363 break;
1364 default:
1365 return BGP_AF_MAX;
1366 break;
1367 }
1368 break;
1369 default:
1370 return BGP_AF_MAX;
1371 break;
1372 }
1373}
1374
c8560b44 1375/* If the peer is not a peer-group but is bound to a peer-group return 1 */
3f9c7369
DS		 1376static inline int
1377peer_group_active (struct peer *peer)
1378{
c8560b44 1379 if (!CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP) && peer->group)
3f9c7369
DS		 1380 return 1;
1381 return 0;
1382}
1383
1384/* If peer is negotiated at least one address family return 1. */
1385static inline int
1386peer_afi_active_nego (const struct peer *peer, afi_t afi)
1387{
1388 if (peer->afc_nego[afi][SAFI_UNICAST]
1389 || peer->afc_nego[afi][SAFI_MULTICAST]
1390 || peer->afc_nego[afi][SAFI_MPLS_VPN])
1391 return 1;
1392 return 0;
1393}
1394
f14e6fdb
DS		 1395/* If at least one address family activated for group, return 1. */
1396static inline int
1397peer_group_af_configured (struct peer_group *group)
1398{
1399 struct peer *peer = group->conf;
1400
1401 if (peer->afc[AFI_IP][SAFI_UNICAST]
1402 || peer->afc[AFI_IP][SAFI_MULTICAST]
1403 || peer->afc[AFI_IP][SAFI_MPLS_VPN]
1404 || peer->afc[AFI_IP6][SAFI_UNICAST]
1405 || peer->afc[AFI_IP6][SAFI_MULTICAST])
1406 return 1;
1407 return 0;
1408}
1409
3f9c7369
DS		 1410static inline char *
1411timestamp_string (time_t ts)
1412{
1413#ifdef HAVE_CLOCK_MONOTONIC
1414 time_t tbuf;
1415 tbuf = time(NULL) - (bgp_clock() - ts);
1416 return ctime(&tbuf);
1417#else
1418 return ctime(&ts);
1419#endif /* HAVE_CLOCK_MONOTONIC */
1420}
1421
1422static inline int
1423peer_established (struct peer *peer)
1424{
1425 if (peer->status == Established)
1426 return 1;
1427 return 0;
1428}
1429
f14e6fdb
DS		 1430static inline int
1431peer_dynamic_neighbor (struct peer *peer)
1432{
1433 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1434}
1435
8a92a8a0
DS		 1436/*
1437 * Currently supporting RFC 5549 for AFI_IP/SAFI_UNICAST only.
1438 *
1439 * Note: When other RFC-5549 applicable SAFIs to be supported, that should
1440 * come as an argument to this routine.
1441 */
1442static inline int
1443peer_cap_enhe (struct peer *peer)
1444{
1445 return (CHECK_FLAG(peer->af_cap[AFI_IP][SAFI_UNICAST], PEER_CAP_ENHE_AF_NEGO));
1446}
1447
d1be1f08 1448/* Lookup VRF for BGP instance based on its type. */
1449static inline struct vrf *
1450bgp_vrf_lookup_by_instance_type (struct bgp *bgp)
1451{
1452 struct vrf *vrf;
1453
1454 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1455 vrf = vrf_lookup (VRF_DEFAULT);
1456 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1457 vrf = vrf_lookup_by_name (bgp->name);
1458 else
1459 vrf = NULL;
1460
1461 return vrf;
1462}
1463
1464/* Link BGP instance to VRF. */
1465static inline void
1466bgp_vrf_link (struct bgp *bgp, struct vrf *vrf)
1467{
1468 bgp->vrf_id = vrf->vrf_id;
59ecefe2 1469 if (vrf->info != (void *)bgp)
1470 {
1471 bgp_lock (bgp);
1472 vrf->info = (void *)bgp;
1473 }
d1be1f08 1474}
1475
1476/* Unlink BGP instance from VRF. */
1477static inline void
1478bgp_vrf_unlink (struct bgp *bgp, struct vrf *vrf)
1479{
59ecefe2 1480 if (vrf->info == (void *)bgp)
1481 {
1482 vrf->info = NULL;
1483 bgp_unlock (bgp);
1484 }
5c81a5f3 1485 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1486}
1487
00d252cb 1488#endif /* _QUAGGA_BGPD_H */
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