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Merge branch 'master' into working/master/bgp-vpn-vrf-leaking
[mirror_frr.git] / bgpd / bgpd.h
1 /* BGP message definition header.
2 * Copyright (C) 1996, 97, 98, 99, 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 */
20
21 #ifndef _QUAGGA_BGPD_H
22 #define _QUAGGA_BGPD_H
23
24 #include "qobj.h"
25 #include <pthread.h>
26
27 #include "lib/json.h"
28 #include "vrf.h"
29 #include "vty.h"
30
31 /* For union sockunion. */
32 #include "queue.h"
33 #include "sockunion.h"
34 #include "routemap.h"
35 #include "linklist.h"
36 #include "defaults.h"
37 #include "bgp_memory.h"
38 #include "bitfield.h"
39 #include "vxlan.h"
40
41 #define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
42 #define BGP_PEER_MAX_HASH_SIZE 16384
43
44 /* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
45 #define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
46
47 struct update_subgroup;
48 struct bpacket;
49
50 /*
51 * Allow the neighbor XXXX remote-as to take internal or external
52 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
53 * behavior
54 * in the system.
55 */
56 enum { AS_UNSPECIFIED = 0,
57 AS_SPECIFIED,
58 AS_INTERNAL,
59 AS_EXTERNAL,
60 };
61
62 /* Typedef BGP specific types. */
63 typedef u_int32_t as_t;
64 typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
65 typedef u_int16_t bgp_size_t;
66
67 #define max(a, b) \
68 ({ \
69 __typeof__(a) _a = (a); \
70 __typeof__(b) _b = (b); \
71 _a > _b ? _a : _b; \
72 })
73
74 enum bgp_af_index {
75 BGP_AF_START,
76 BGP_AF_IPV4_UNICAST = BGP_AF_START,
77 BGP_AF_IPV4_MULTICAST,
78 BGP_AF_IPV4_VPN,
79 BGP_AF_IPV6_UNICAST,
80 BGP_AF_IPV6_MULTICAST,
81 BGP_AF_IPV6_VPN,
82 BGP_AF_IPV4_ENCAP,
83 BGP_AF_IPV6_ENCAP,
84 BGP_AF_L2VPN_EVPN,
85 BGP_AF_IPV4_LBL_UNICAST,
86 BGP_AF_IPV6_LBL_UNICAST,
87 BGP_AF_MAX
88 };
89
90 #define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
91
92 #define FOREACH_AFI_SAFI(afi, safi) \
93 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
94 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
95
96 /* BGP master for system wide configurations and variables. */
97 struct bgp_master {
98 /* BGP instance list. */
99 struct list *bgp;
100
101 /* BGP thread master. */
102 struct thread_master *master;
103
104 /* BGP pthreads. */
105 #define PTHREAD_IO (1 << 1)
106 #define PTHREAD_KEEPALIVES (1 << 2)
107
108 /* work queues */
109 struct work_queue *process_main_queue;
110
111 /* Listening sockets */
112 struct list *listen_sockets;
113
114 /* BGP port number. */
115 u_int16_t port;
116
117 /* Listener address */
118 char *address;
119
120 /* BGP start time. */
121 time_t start_time;
122
123 /* Various BGP global configuration. */
124 u_char options;
125 #define BGP_OPT_NO_FIB (1 << 0)
126 #define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
127 #define BGP_OPT_CONFIG_CISCO (1 << 2)
128 #define BGP_OPT_NO_LISTEN (1 << 3)
129
130 uint64_t updgrp_idspace;
131 uint64_t subgrp_idspace;
132
133 /* timer to dampen route map changes */
134 struct thread *t_rmap_update; /* Handle route map updates */
135 u_int32_t rmap_update_timer; /* Route map update timer */
136 #define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
137
138 /* Id space for automatic RD derivation for an EVI/VRF */
139 bitfield_t rd_idspace;
140
141 QOBJ_FIELDS
142 };
143 DECLARE_QOBJ_TYPE(bgp_master)
144
145 /* BGP route-map structure. */
146 struct bgp_rmap {
147 char *name;
148 struct route_map *map;
149 };
150
151 struct bgp_redist {
152 u_short instance;
153
154 /* BGP redistribute metric configuration. */
155 u_char redist_metric_flag;
156 u_int32_t redist_metric;
157
158 /* BGP redistribute route-map. */
159 struct bgp_rmap rmap;
160 };
161
162 typedef enum {
163 BGP_VPN_POLICY_DIR_FROMVPN = 0,
164 BGP_VPN_POLICY_DIR_TOVPN = 1,
165 BGP_VPN_POLICY_DIR_MAX = 2
166 } vpn_policy_direction_t;
167
168 /*
169 * Type of 'struct bgp'.
170 * - Default: The default instance
171 * - VRF: A specific (non-default) VRF
172 * - View: An instance used for route exchange
173 * The "default" instance is treated separately to simplify the code. Note
174 * that if deployed in a Multi-VRF environment, it may not exist.
175 */
176 enum bgp_instance_type {
177 BGP_INSTANCE_TYPE_DEFAULT,
178 BGP_INSTANCE_TYPE_VRF,
179 BGP_INSTANCE_TYPE_VIEW
180 };
181
182 /* BGP instance structure. */
183 struct bgp {
184 /* AS number of this BGP instance. */
185 as_t as;
186
187 /* Name of this BGP instance. */
188 char *name;
189
190 /* Type of instance and VRF id. */
191 enum bgp_instance_type inst_type;
192 vrf_id_t vrf_id;
193
194 /* Reference count to allow peer_delete to finish after bgp_delete */
195 int lock;
196
197 /* Self peer. */
198 struct peer *peer_self;
199
200 /* BGP peer. */
201 struct list *peer;
202 struct hash *peerhash;
203
204 /* BGP peer group. */
205 struct list *group;
206
207 /* The maximum number of BGP dynamic neighbors that can be created */
208 int dynamic_neighbors_limit;
209
210 /* The current number of BGP dynamic neighbors */
211 int dynamic_neighbors_count;
212
213 struct hash *update_groups[BGP_AF_MAX];
214
215 /*
216 * Global statistics for update groups.
217 */
218 struct {
219 u_int32_t join_events;
220 u_int32_t prune_events;
221 u_int32_t merge_events;
222 u_int32_t split_events;
223 u_int32_t updgrp_switch_events;
224 u_int32_t peer_refreshes_combined;
225 u_int32_t adj_count;
226 u_int32_t merge_checks_triggered;
227
228 u_int32_t updgrps_created;
229 u_int32_t updgrps_deleted;
230 u_int32_t subgrps_created;
231 u_int32_t subgrps_deleted;
232 } update_group_stats;
233
234 /* BGP configuration. */
235 u_int16_t config;
236 #define BGP_CONFIG_CLUSTER_ID (1 << 0)
237 #define BGP_CONFIG_CONFEDERATION (1 << 1)
238
239 /* BGP router identifier. */
240 struct in_addr router_id;
241 struct in_addr router_id_static;
242 struct in_addr router_id_zebra;
243
244 /* BGP route reflector cluster ID. */
245 struct in_addr cluster_id;
246
247 /* BGP confederation information. */
248 as_t confed_id;
249 as_t *confed_peers;
250 int confed_peers_cnt;
251
252 struct thread
253 *t_startup; /* start-up timer on only once at the beginning */
254
255 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
256 #define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
257 u_int32_t maxmed_onstartup_value; /* Max-med value when active on
258 start-up */
259 struct thread
260 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
261 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
262
263 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
264 #define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
265 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on
266 */
267 #define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
268
269 u_char maxmed_active; /* 1/0 if max-med is active or not */
270 u_int32_t maxmed_value; /* Max-med value when its active */
271
272 /* BGP update delay on startup */
273 struct thread *t_update_delay;
274 struct thread *t_establish_wait;
275 u_char update_delay_over;
276 u_char main_zebra_update_hold;
277 u_char main_peers_update_hold;
278 u_int16_t v_update_delay;
279 u_int16_t v_establish_wait;
280 char update_delay_begin_time[64];
281 char update_delay_end_time[64];
282 char update_delay_zebra_resume_time[64];
283 char update_delay_peers_resume_time[64];
284 u_int32_t established;
285 u_int32_t restarted_peers;
286 u_int32_t implicit_eors;
287 u_int32_t explicit_eors;
288 #define BGP_UPDATE_DELAY_DEF 0
289 #define BGP_UPDATE_DELAY_MIN 0
290 #define BGP_UPDATE_DELAY_MAX 3600
291
292 /* BGP flags. */
293 u_int32_t flags;
294 #define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
295 #define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
296 #define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
297 #define BGP_FLAG_MED_CONFED (1 << 3)
298 #define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
299 #define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
300 #define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
301 #define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
302 #define BGP_FLAG_ASPATH_IGNORE (1 << 8)
303 #define BGP_FLAG_IMPORT_CHECK (1 << 9)
304 #define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
305 #define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
306 #define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
307 #define BGP_FLAG_ASPATH_CONFED (1 << 13)
308 #define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
309 #define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
310 #define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
311 #define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
312 #define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
313 #define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
314 #define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
315 #define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
316
317 /* BGP Per AF flags */
318 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
319 #define BGP_CONFIG_DAMPENING (1 << 0)
320 #define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 1)
321
322 /* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
323 #define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
324 #define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
325 #define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
326 #define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
327
328
329 /* Route table for next-hop lookup cache. */
330 struct bgp_table *nexthop_cache_table[AFI_MAX];
331
332 /* Route table for import-check */
333 struct bgp_table *import_check_table[AFI_MAX];
334
335 struct bgp_table *connected_table[AFI_MAX];
336
337 struct hash *address_hash;
338
339 /* DB for all local tunnel-ips - used mainly for martian checks
340 Currently it only has all VxLan tunnel IPs*/
341 struct hash *tip_hash;
342
343 /* Static route configuration. */
344 struct bgp_table *route[AFI_MAX][SAFI_MAX];
345
346 /* Aggregate address configuration. */
347 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
348
349 /* BGP routing information base. */
350 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
351
352 /* BGP table route-map. */
353 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
354
355 /* BGP redistribute configuration. */
356 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
357
358 /* Allocate MPLS labels */
359 u_char allocate_mpls_labels[AFI_MAX][SAFI_MAX];
360
361 /* timer to re-evaluate neighbor default-originate route-maps */
362 struct thread *t_rmap_def_originate_eval;
363 #define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
364
365 /* BGP distance configuration. */
366 u_char distance_ebgp[AFI_MAX][SAFI_MAX];
367 u_char distance_ibgp[AFI_MAX][SAFI_MAX];
368 u_char distance_local[AFI_MAX][SAFI_MAX];
369
370 /* BGP default local-preference. */
371 u_int32_t default_local_pref;
372
373 /* BGP default subgroup pkt queue max */
374 u_int32_t default_subgroup_pkt_queue_max;
375
376 /* BGP default timer. */
377 u_int32_t default_holdtime;
378 u_int32_t default_keepalive;
379
380 /* BGP graceful restart */
381 u_int32_t restart_time;
382 u_int32_t stalepath_time;
383
384 /* Maximum-paths configuration */
385 struct bgp_maxpaths_cfg {
386 u_int16_t maxpaths_ebgp;
387 u_int16_t maxpaths_ibgp;
388 u_int16_t ibgp_flags;
389 #define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
390 } maxpaths[AFI_MAX][SAFI_MAX];
391
392 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
393 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
394
395 /* Automatic coalesce adjust on/off */
396 bool heuristic_coalesce;
397 /* Actual coalesce time */
398 uint32_t coalesce_time;
399
400 /* Auto-shutdown new peers */
401 bool autoshutdown;
402
403 u_int32_t addpath_tx_id;
404 int addpath_tx_used[AFI_MAX][SAFI_MAX];
405
406 #if ENABLE_BGP_VNC
407 struct rfapi_cfg *rfapi_cfg;
408 struct rfapi *rfapi;
409 #endif
410
411 /* EVPN related information */
412
413 /* EVI hash table */
414 struct hash *vnihash;
415
416 /* EVPN enable - advertise gateway macip routes */
417 int advertise_gw_macip;
418
419 /* EVPN enable - advertise local VNIs and their MACs etc. */
420 int advertise_all_vni;
421
422 /* Hash table of Import RTs to EVIs */
423 struct hash *import_rt_hash;
424
425 /* Hash table of VRF import RTs to VRFs */
426 struct hash *vrf_import_rt_hash;
427
428 /* L3-VNI corresponding to this vrf */
429 vni_t l3vni;
430
431 /* router-mac to be used in mac-ip routes for this vrf */
432 struct ethaddr rmac;
433
434 /* originator ip - to be used as NH for type-5 routes */
435 struct in_addr originator_ip;
436
437 /* vrf flags */
438 uint32_t vrf_flags;
439 #define BGP_VRF_AUTO (1 << 0)
440 #define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
441 #define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
442 #define BGP_VRF_RD_CFGD (1 << 3)
443 #define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
444
445
446 /* unique ID for auto derivation of RD for this vrf */
447 uint16_t vrf_rd_id;
448
449 /* RD for this VRF */
450 struct prefix_rd vrf_prd;
451
452 /* import rt list for the vrf instance */
453 struct list *vrf_import_rtl;
454
455 /* export rt list for the vrf instance */
456 struct list *vrf_export_rtl;
457
458 /* list of corresponding l2vnis (struct bgpevpn) */
459 struct list *l2vnis;
460
461 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
462 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
463
464 /* vpn-policy */
465 struct {
466 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
467 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
468 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
469
470 /* should be mpls_label_t? */
471 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
472 uint32_t tovpn_zebra_vrf_label_last_sent;
473 struct prefix_rd tovpn_rd;
474 struct prefix tovpn_nexthop; /* unset => set to router id */
475 uint32_t flags;
476 #define BGP_VPN_POLICY_TOVPN_RD_SET 0x00000004
477 #define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET 0x00000008
478 } vpn_policy[AFI_MAX];
479
480 QOBJ_FIELDS
481 };
482 DECLARE_QOBJ_TYPE(bgp)
483
484 #define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
485
486 #define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
487 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
488 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
489 && bgp->vrf_id != VRF_UNKNOWN))
490
491 /* BGP peer-group support. */
492 struct peer_group {
493 /* Name of the peer-group. */
494 char *name;
495
496 /* Pointer to BGP. */
497 struct bgp *bgp;
498
499 /* Peer-group client list. */
500 struct list *peer;
501
502 /** Dynamic neighbor listening ranges */
503 struct list *listen_range[AFI_MAX];
504
505 /* Peer-group config */
506 struct peer *conf;
507 };
508
509 /* BGP Notify message format. */
510 struct bgp_notify {
511 u_char code;
512 u_char subcode;
513 char *data;
514 bgp_size_t length;
515 u_char *raw_data;
516 };
517
518 /* Next hop self address. */
519 struct bgp_nexthop {
520 struct interface *ifp;
521 struct in_addr v4;
522 struct in6_addr v6_global;
523 struct in6_addr v6_local;
524 };
525
526 /* BGP addpath values */
527 #define BGP_ADDPATH_RX 1
528 #define BGP_ADDPATH_TX 2
529 #define BGP_ADDPATH_ID_LEN 4
530
531 #define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
532
533 /* BGP router distinguisher value. */
534 #define BGP_RD_SIZE 8
535
536 struct bgp_rd {
537 u_char val[BGP_RD_SIZE];
538 };
539
540 #define RMAP_IN 0
541 #define RMAP_OUT 1
542 #define RMAP_MAX 2
543
544 #include "filter.h"
545
546 /* BGP filter structure. */
547 struct bgp_filter {
548 /* Distribute-list. */
549 struct {
550 char *name;
551 struct access_list *alist;
552 } dlist[FILTER_MAX];
553
554 /* Prefix-list. */
555 struct {
556 char *name;
557 struct prefix_list *plist;
558 } plist[FILTER_MAX];
559
560 /* Filter-list. */
561 struct {
562 char *name;
563 struct as_list *aslist;
564 } aslist[FILTER_MAX];
565
566 /* Route-map. */
567 struct {
568 char *name;
569 struct route_map *map;
570 } map[RMAP_MAX];
571
572 /* Unsuppress-map. */
573 struct {
574 char *name;
575 struct route_map *map;
576 } usmap;
577 };
578
579 /* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
580 a peer who's AS is part of our Confederation. */
581 typedef enum {
582 BGP_PEER_IBGP = 1,
583 BGP_PEER_EBGP,
584 BGP_PEER_INTERNAL,
585 BGP_PEER_CONFED,
586 } bgp_peer_sort_t;
587
588 /* BGP message header and packet size. */
589 #define BGP_MARKER_SIZE 16
590 #define BGP_HEADER_SIZE 19
591 #define BGP_MAX_PACKET_SIZE 4096
592 #define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
593
594 /*
595 * Trigger delay for bgp_announce_route().
596 */
597 #define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
598 #define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
599
600 struct peer_af {
601 /* back pointer to the peer */
602 struct peer *peer;
603
604 /* which subgroup the peer_af belongs to */
605 struct update_subgroup *subgroup;
606
607 /* for being part of an update subgroup's peer list */
608 LIST_ENTRY(peer_af) subgrp_train;
609
610 /* for being part of a packet's peer list */
611 LIST_ENTRY(peer_af) pkt_train;
612
613 struct bpacket *next_pkt_to_send;
614
615 /*
616 * Trigger timer for bgp_announce_route().
617 */
618 struct thread *t_announce_route;
619
620 afi_t afi;
621 safi_t safi;
622 int afid;
623 };
624
625 /* BGP neighbor structure. */
626 struct peer {
627 /* BGP structure. */
628 struct bgp *bgp;
629
630 /* reference count, primarily to allow bgp_process'ing of route_node's
631 * to be done after a struct peer is deleted.
632 *
633 * named 'lock' for hysterical reasons within Quagga.
634 */
635 int lock;
636
637 /* BGP peer group. */
638 struct peer_group *group;
639 uint64_t version[AFI_MAX][SAFI_MAX];
640
641 /* BGP peer_af structures, per configured AF on this peer */
642 struct peer_af *peer_af_array[BGP_AF_MAX];
643
644 /* Peer's remote AS number. */
645 int as_type;
646 as_t as;
647
648 /* Peer's local AS number. */
649 as_t local_as;
650
651 bgp_peer_sort_t sort;
652
653 /* Peer's Change local AS number. */
654 as_t change_local_as;
655
656 /* Remote router ID. */
657 struct in_addr remote_id;
658
659 /* Local router ID. */
660 struct in_addr local_id;
661
662 /* Packet receive and send buffer. */
663 pthread_mutex_t io_mtx; // guards ibuf, obuf
664 struct stream_fifo *ibuf; // packets waiting to be processed
665 struct stream_fifo *obuf; // packets waiting to be written
666
667 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
668 struct stream *obuf_work; // WiP buffer used to construct packets
669
670 struct stream *curr; // the current packet being parsed
671
672 /* We use a separate stream to encode MP_REACH_NLRI for efficient
673 * NLRI packing. peer->obuf_work stores all the other attributes. The
674 * actual packet is then constructed by concatenating the two.
675 */
676 struct stream *scratch;
677
678 /* the doppelganger peer structure, due to dual TCP conn setup */
679 struct peer *doppelganger;
680
681 /* Status of the peer. */
682 int status;
683 int ostatus;
684
685 /* FSM events, stored for debug purposes.
686 * Note: uchar used for reduced memory usage.
687 */
688 unsigned char cur_event;
689 unsigned char last_event;
690 unsigned char last_major_event;
691
692 /* Peer index, used for dumping TABLE_DUMP_V2 format */
693 uint16_t table_dump_index;
694
695 /* Peer information */
696 int fd; /* File descriptor */
697 int ttl; /* TTL of TCP connection to the peer. */
698 int rtt; /* Estimated round-trip-time from TCP_INFO */
699 int gtsm_hops; /* minimum hopcount to peer */
700 char *desc; /* Description of the peer. */
701 unsigned short port; /* Destination port for peer */
702 char *host; /* Printable address of the peer. */
703 union sockunion su; /* Sockunion address of the peer. */
704 #define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
705 time_t uptime; /* Last Up/Down time */
706 time_t readtime; /* Last read time */
707 time_t resettime; /* Last reset time */
708
709 char *conf_if; /* neighbor interface config name. */
710 struct interface *ifp; /* corresponding interface */
711 char *ifname; /* bind interface name. */
712 char *update_if;
713 union sockunion *update_source;
714
715 union sockunion *su_local; /* Sockunion of local address. */
716 union sockunion *su_remote; /* Sockunion of remote address. */
717 int shared_network; /* Is this peer shared same network. */
718 struct bgp_nexthop nexthop; /* Nexthop */
719
720 /* Peer address family configuration. */
721 u_char afc[AFI_MAX][SAFI_MAX];
722 u_char afc_nego[AFI_MAX][SAFI_MAX];
723 u_char afc_adv[AFI_MAX][SAFI_MAX];
724 u_char afc_recv[AFI_MAX][SAFI_MAX];
725
726 /* Capability flags (reset in bgp_stop) */
727 u_int32_t cap;
728 #define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
729 #define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
730 #define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
731 #define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
732 #define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
733 #define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
734 #define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
735 #define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
736 #define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
737 #define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
738 #define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
739 #define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
740 #define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
741 #define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
742 #define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
743 #define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
744 #define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
745
746 /* Capability flags (reset in bgp_stop) */
747 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
748 #define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
749 #define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
750 #define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
751 #define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
752 #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
753 #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
754 #define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
755 #define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
756 #define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
757 #define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
758 #define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
759 #define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
760 #define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
761 #define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
762 #define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
763
764 /* Global configuration flags. */
765 u_int32_t flags;
766 #define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
767 #define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
768 #define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
769 #define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
770 #define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
771 #define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
772 #define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
773 #define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
774 #define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
775 #define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
776 #define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
777 #define PEER_FLAG_LONESOUL (1 << 11)
778 #define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
779 #define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
780 #define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
781 #define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
782
783 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
784 char *tx_shutdown_message;
785
786 /* NSF mode (graceful restart) */
787 u_char nsf[AFI_MAX][SAFI_MAX];
788
789 /* Per AF configuration flags. */
790 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
791 #define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
792 #define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
793 #define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
794 #define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
795 #define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
796 #define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
797 #define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
798 #define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
799 #define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
800 #define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
801 #define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
802 #define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
803 #define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
804 #define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
805 #define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
806 #define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
807 #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
808 #define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
809 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
810 #define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
811 #define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
812 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
813 #define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
814 #define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
815 #define PEER_FLAG_WEIGHT (1 << 24) /* weight */
816 #define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
817 #define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
818
819 /* MD5 password */
820 char *password;
821
822 /* default-originate route-map. */
823 struct {
824 char *name;
825 struct route_map *map;
826 } default_rmap[AFI_MAX][SAFI_MAX];
827
828 /* Peer status flags. */
829 u_int16_t sflags;
830 #define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
831 #define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
832 #define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
833 #define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
834 #define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
835 #define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
836 #define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
837
838 /* Peer status af flags (reset in bgp_stop) */
839 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
840 #define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
841 #define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
842 #define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
843 #define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
844 #define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
845 #define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
846
847 /* Default attribute value for the peer. */
848 u_int32_t config;
849 #define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
850 #define PEER_CONFIG_CONNECT (1 << 1) /* connect */
851 #define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
852 #define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
853
854 #define PEER_OR_GROUP_TIMER_SET(peer) \
855 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
856 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
857
858 _Atomic uint32_t holdtime;
859 _Atomic uint32_t keepalive;
860 _Atomic uint32_t connect;
861 _Atomic uint32_t routeadv;
862
863 /* Timer values. */
864 _Atomic uint32_t v_start;
865 _Atomic uint32_t v_connect;
866 _Atomic uint32_t v_holdtime;
867 _Atomic uint32_t v_keepalive;
868 _Atomic uint32_t v_routeadv;
869 _Atomic uint32_t v_pmax_restart;
870 _Atomic uint32_t v_gr_restart;
871
872 /* Threads. */
873 struct thread *t_read;
874 struct thread *t_write;
875 struct thread *t_start;
876 struct thread *t_connect_check_r;
877 struct thread *t_connect_check_w;
878 struct thread *t_connect;
879 struct thread *t_holdtime;
880 struct thread *t_routeadv;
881 struct thread *t_pmax_restart;
882 struct thread *t_gr_restart;
883 struct thread *t_gr_stale;
884 struct thread *t_generate_updgrp_packets;
885 struct thread *t_process_packet;
886
887 /* Thread flags. */
888 _Atomic uint16_t thread_flags;
889 #define PEER_THREAD_WRITES_ON (1 << 0)
890 #define PEER_THREAD_READS_ON (1 << 1)
891 #define PEER_THREAD_KEEPALIVES_ON (1 << 2)
892 /* workqueues */
893 struct work_queue *clear_node_queue;
894
895 #define PEER_TOTAL_RX(peer) \
896 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
897 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
898 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
899 + atomic_load_explicit(&peer->refresh_in, \
900 memory_order_relaxed) \
901 + atomic_load_explicit(&peer->keepalive_in, \
902 memory_order_relaxed) \
903 + atomic_load_explicit(&peer->dynamic_cap_in, \
904 memory_order_relaxed)
905
906 #define PEER_TOTAL_TX(peer) \
907 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
908 + atomic_load_explicit(&peer->update_out, \
909 memory_order_relaxed) \
910 + atomic_load_explicit(&peer->notify_out, \
911 memory_order_relaxed) \
912 + atomic_load_explicit(&peer->refresh_out, \
913 memory_order_relaxed) \
914 + atomic_load_explicit(&peer->keepalive_out, \
915 memory_order_relaxed) \
916 + atomic_load_explicit(&peer->dynamic_cap_out, \
917 memory_order_relaxed)
918
919 /* Statistics field */
920 _Atomic uint32_t open_in; /* Open message input count */
921 _Atomic uint32_t open_out; /* Open message output count */
922 _Atomic uint32_t update_in; /* Update message input count */
923 _Atomic uint32_t update_out; /* Update message ouput count */
924 _Atomic time_t update_time; /* Update message received time. */
925 _Atomic uint32_t keepalive_in; /* Keepalive input count */
926 _Atomic uint32_t keepalive_out; /* Keepalive output count */
927 _Atomic uint32_t notify_in; /* Notify input count */
928 _Atomic uint32_t notify_out; /* Notify output count */
929 _Atomic uint32_t refresh_in; /* Route Refresh input count */
930 _Atomic uint32_t refresh_out; /* Route Refresh output count */
931 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
932 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
933
934 /* BGP state count */
935 u_int32_t established; /* Established */
936 u_int32_t dropped; /* Dropped */
937
938 /* Update delay related fields */
939 u_char update_delay_over; /* When this is set, BGP is no more waiting
940 for EOR */
941
942 /* Syncronization list and time. */
943 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
944 time_t synctime;
945 /* timestamp when the last UPDATE msg was written */
946 _Atomic time_t last_write;
947 /* timestamp when the last msg was written */
948 _Atomic time_t last_update;
949
950 /* Send prefix count. */
951 unsigned long scount[AFI_MAX][SAFI_MAX];
952
953 /* Notify data. */
954 struct bgp_notify notify;
955
956 /* Filter structure. */
957 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
958
959 /* ORF Prefix-list */
960 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
961
962 /* Text description of last attribute rcvd */
963 char rcvd_attr_str[BUFSIZ];
964
965 /* Track if we printed the attribute in debugs */
966 int rcvd_attr_printed;
967
968 /* Prefix count. */
969 unsigned long pcount[AFI_MAX][SAFI_MAX];
970
971 /* Max prefix count. */
972 unsigned long pmax[AFI_MAX][SAFI_MAX];
973 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
974 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
975 #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
976
977 /* allowas-in. */
978 char allowas_in[AFI_MAX][SAFI_MAX];
979
980 /* weight */
981 unsigned long weight[AFI_MAX][SAFI_MAX];
982
983 /* peer reset cause */
984 char last_reset;
985 #define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
986 #define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
987 #define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
988 #define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
989 #define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
990 #define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
991 #define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
992 #define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
993 #define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
994 #define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
995 #define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
996 #define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
997 #define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
998 #define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
999 #define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1000 #define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1001 #define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1002 #define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1003 #define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1004 #define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1005 #define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
1006 #define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
1007 #define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
1008 #define PEER_DOWN_BFD_DOWN 24 /* BFD down */
1009 #define PEER_DOWN_IF_DOWN 25 /* Interface down */
1010 #define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
1011 unsigned long last_reset_cause_size;
1012 u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
1013
1014 /* The kind of route-map Flags.*/
1015 u_char rmap_type;
1016 #define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1017 #define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1018 #define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1019 #define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1020 #define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1021 #define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
1022 #define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1023 #define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
1024
1025 /* peer specific BFD information */
1026 struct bfd_info *bfd_info;
1027
1028 /* hostname and domainname advertised by host */
1029 char *hostname;
1030 char *domainname;
1031
1032 QOBJ_FIELDS
1033 };
1034 DECLARE_QOBJ_TYPE(peer)
1035
1036 /* Check if suppress start/restart of sessions to peer. */
1037 #define BGP_PEER_START_SUPPRESSED(P) \
1038 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1039 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
1040
1041 #define PEER_PASSWORD_MINLEN (1)
1042 #define PEER_PASSWORD_MAXLEN (80)
1043
1044 /* This structure's member directly points incoming packet data
1045 stream. */
1046 struct bgp_nlri {
1047 /* AFI. */
1048 uint16_t afi; /* iana_afi_t */
1049
1050 /* SAFI. */
1051 uint8_t safi; /* iana_safi_t */
1052
1053 /* Pointer to NLRI byte stream. */
1054 u_char *nlri;
1055
1056 /* Length of whole NLRI. */
1057 bgp_size_t length;
1058 };
1059
1060 /* BGP versions. */
1061 #define BGP_VERSION_4 4
1062
1063 /* Default BGP port number. */
1064 #define BGP_PORT_DEFAULT 179
1065
1066 /* BGP minimum message size. */
1067 #define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1068 #define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1069 #define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1070 #define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1071 #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1072 #define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1073
1074 /* BGP message types. */
1075 #define BGP_MSG_OPEN 1
1076 #define BGP_MSG_UPDATE 2
1077 #define BGP_MSG_NOTIFY 3
1078 #define BGP_MSG_KEEPALIVE 4
1079 #define BGP_MSG_ROUTE_REFRESH_NEW 5
1080 #define BGP_MSG_CAPABILITY 6
1081 #define BGP_MSG_ROUTE_REFRESH_OLD 128
1082
1083 /* BGP open optional parameter. */
1084 #define BGP_OPEN_OPT_AUTH 1
1085 #define BGP_OPEN_OPT_CAP 2
1086
1087 /* BGP4 attribute type codes. */
1088 #define BGP_ATTR_ORIGIN 1
1089 #define BGP_ATTR_AS_PATH 2
1090 #define BGP_ATTR_NEXT_HOP 3
1091 #define BGP_ATTR_MULTI_EXIT_DISC 4
1092 #define BGP_ATTR_LOCAL_PREF 5
1093 #define BGP_ATTR_ATOMIC_AGGREGATE 6
1094 #define BGP_ATTR_AGGREGATOR 7
1095 #define BGP_ATTR_COMMUNITIES 8
1096 #define BGP_ATTR_ORIGINATOR_ID 9
1097 #define BGP_ATTR_CLUSTER_LIST 10
1098 #define BGP_ATTR_DPA 11
1099 #define BGP_ATTR_ADVERTISER 12
1100 #define BGP_ATTR_RCID_PATH 13
1101 #define BGP_ATTR_MP_REACH_NLRI 14
1102 #define BGP_ATTR_MP_UNREACH_NLRI 15
1103 #define BGP_ATTR_EXT_COMMUNITIES 16
1104 #define BGP_ATTR_AS4_PATH 17
1105 #define BGP_ATTR_AS4_AGGREGATOR 18
1106 #define BGP_ATTR_AS_PATHLIMIT 21
1107 #define BGP_ATTR_PMSI_TUNNEL 22
1108 #define BGP_ATTR_ENCAP 23
1109 #define BGP_ATTR_LARGE_COMMUNITIES 32
1110 #define BGP_ATTR_PREFIX_SID 40
1111 #if ENABLE_BGP_VNC
1112 #define BGP_ATTR_VNC 255
1113 #endif
1114
1115 /* BGP update origin. */
1116 #define BGP_ORIGIN_IGP 0
1117 #define BGP_ORIGIN_EGP 1
1118 #define BGP_ORIGIN_INCOMPLETE 2
1119
1120 /* BGP notify message codes. */
1121 #define BGP_NOTIFY_HEADER_ERR 1
1122 #define BGP_NOTIFY_OPEN_ERR 2
1123 #define BGP_NOTIFY_UPDATE_ERR 3
1124 #define BGP_NOTIFY_HOLD_ERR 4
1125 #define BGP_NOTIFY_FSM_ERR 5
1126 #define BGP_NOTIFY_CEASE 6
1127 #define BGP_NOTIFY_CAPABILITY_ERR 7
1128
1129 #define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1130
1131 /* BGP_NOTIFY_HEADER_ERR sub codes. */
1132 #define BGP_NOTIFY_HEADER_NOT_SYNC 1
1133 #define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1134 #define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
1135
1136 /* BGP_NOTIFY_OPEN_ERR sub codes. */
1137 #define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
1138 #define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1139 #define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1140 #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1141 #define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1142 #define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1143 #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1144 #define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
1145
1146 /* BGP_NOTIFY_UPDATE_ERR sub codes. */
1147 #define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1148 #define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1149 #define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1150 #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1151 #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1152 #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1153 #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1154 #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1155 #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1156 #define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1157 #define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
1158
1159 /* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
1160 #define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1161 #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1162 #define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1163 #define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1164 #define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1165 #define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
1166 #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1167 #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
1168
1169 /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1170 #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1171 #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1172 #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
1173
1174 /* BGP finite state machine status. */
1175 #define Idle 1
1176 #define Connect 2
1177 #define Active 3
1178 #define OpenSent 4
1179 #define OpenConfirm 5
1180 #define Established 6
1181 #define Clearing 7
1182 #define Deleted 8
1183 #define BGP_STATUS_MAX 9
1184
1185 /* BGP finite state machine events. */
1186 #define BGP_Start 1
1187 #define BGP_Stop 2
1188 #define TCP_connection_open 3
1189 #define TCP_connection_closed 4
1190 #define TCP_connection_open_failed 5
1191 #define TCP_fatal_error 6
1192 #define ConnectRetry_timer_expired 7
1193 #define Hold_Timer_expired 8
1194 #define KeepAlive_timer_expired 9
1195 #define Receive_OPEN_message 10
1196 #define Receive_KEEPALIVE_message 11
1197 #define Receive_UPDATE_message 12
1198 #define Receive_NOTIFICATION_message 13
1199 #define Clearing_Completed 14
1200 #define BGP_EVENTS_MAX 15
1201
1202 /* BGP timers default value. */
1203 /* note: the DFLT_ ones depend on compile-time "defaults" selection */
1204 #define BGP_INIT_START_TIMER 1
1205 #define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1206 #define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
1207 #define BGP_DEFAULT_EBGP_ROUTEADV 0
1208 #define BGP_DEFAULT_IBGP_ROUTEADV 0
1209 #define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
1210
1211 /* BGP default local preference. */
1212 #define BGP_DEFAULT_LOCAL_PREF 100
1213
1214 /* BGP local-preference to send when 'bgp graceful-shutdown'
1215 * is configured */
1216 #define BGP_GSHUT_LOCAL_PREF 0
1217
1218 /* BGP default subgroup packet queue max . */
1219 #define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1220
1221 /* BGP graceful restart */
1222 #define BGP_DEFAULT_RESTART_TIME 120
1223 #define BGP_DEFAULT_STALEPATH_TIME 360
1224
1225 /* BGP uptime string length. */
1226 #define BGP_UPTIME_LEN 25
1227
1228 /* Default configuration settings for bgpd. */
1229 #define BGP_VTY_PORT 2605
1230 #define BGP_DEFAULT_CONFIG "bgpd.conf"
1231
1232 /* Check AS path loop when we send NLRI. */
1233 /* #define BGP_SEND_ASPATH_CHECK */
1234
1235 /* BGP Dynamic Neighbors feature */
1236 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1237 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1238 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1239
1240 /* Flag for peer_clear_soft(). */
1241 enum bgp_clear_type {
1242 BGP_CLEAR_SOFT_NONE,
1243 BGP_CLEAR_SOFT_OUT,
1244 BGP_CLEAR_SOFT_IN,
1245 BGP_CLEAR_SOFT_BOTH,
1246 BGP_CLEAR_SOFT_IN_ORF_PREFIX
1247 };
1248
1249 /* Macros. */
1250 #define BGP_INPUT(P) ((P)->curr)
1251 #define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
1252 #define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1253 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
1254
1255 /* BGP error codes. */
1256 #define BGP_SUCCESS 0
1257 #define BGP_ERR_INVALID_VALUE -1
1258 #define BGP_ERR_INVALID_FLAG -2
1259 #define BGP_ERR_INVALID_AS -3
1260 #define BGP_ERR_INVALID_BGP -4
1261 #define BGP_ERR_PEER_GROUP_MEMBER -5
1262 #define BGP_ERR_MULTIPLE_INSTANCE_USED -6
1263 #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1264 #define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1265 #define BGP_ERR_PEER_GROUP_MISMATCH -9
1266 #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1267 #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1268 #define BGP_ERR_AS_MISMATCH -12
1269 #define BGP_ERR_PEER_FLAG_CONFLICT -13
1270 #define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1271 #define BGP_ERR_PEER_FILTER_CONFLICT -15
1272 #define BGP_ERR_NOT_INTERNAL_PEER -16
1273 #define BGP_ERR_REMOVE_PRIVATE_AS -17
1274 #define BGP_ERR_AF_UNCONFIGURED -18
1275 #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1276 #define BGP_ERR_INSTANCE_MISMATCH -20
1277 #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1278 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1279 #define BGP_ERR_TCPSIG_FAILED -23
1280 #define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1281 #define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1282 #define BGP_ERR_NO_INTERFACE_CONFIG -26
1283 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1284 #define BGP_ERR_AS_OVERRIDE -28
1285 #define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1286 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1287 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1288 #define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1289 #define BGP_ERR_MAX -33
1290 #define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
1291 #define BGP_ERR_PEER_SAFI_CONFLICT -35
1292
1293 /*
1294 * Enumeration of different policy kinds a peer can be configured with.
1295 */
1296 typedef enum {
1297 BGP_POLICY_ROUTE_MAP,
1298 BGP_POLICY_FILTER_LIST,
1299 BGP_POLICY_PREFIX_LIST,
1300 BGP_POLICY_DISTRIBUTE_LIST,
1301 } bgp_policy_type_e;
1302
1303 extern struct bgp_master *bm;
1304 extern unsigned int multipath_num;
1305
1306 /* Prototypes. */
1307 extern void bgp_terminate(void);
1308 extern void bgp_reset(void);
1309 extern time_t bgp_clock(void);
1310 extern void bgp_zclient_reset(void);
1311 extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1312 struct bgp_nexthop *, struct peer *);
1313 extern struct bgp *bgp_get_default(void);
1314 extern struct bgp *bgp_lookup(as_t, const char *);
1315 extern struct bgp *bgp_lookup_by_name(const char *);
1316 extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1317 extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1318 extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
1319 extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
1320 extern void bgp_peer_conf_if_to_su_update(struct peer *);
1321 extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
1322 extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1323 extern struct peer_group *peer_group_get(struct bgp *, const char *);
1324 extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1325 union sockunion *,
1326 struct peer_group *);
1327 extern struct prefix *
1328 peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1329 extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1330 struct prefix *,
1331 struct prefix **);
1332 extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1333 union sockunion *);
1334 extern void peer_drop_dynamic_neighbor(struct peer *);
1335
1336 /*
1337 * Peers are incredibly easy to memory leak
1338 * due to the various ways that they are actually used
1339 * Provide some functionality to debug locks and unlocks
1340 */
1341 extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1342 extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1343 #define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1344 #define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1345
1346 extern bgp_peer_sort_t peer_sort(struct peer *peer);
1347 extern int peer_active(struct peer *);
1348 extern int peer_active_nego(struct peer *);
1349 extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
1350 extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
1351 as_t, as_t, int, afi_t, safi_t,
1352 struct peer_group *);
1353 extern struct peer *peer_create_accept(struct bgp *);
1354 extern void peer_xfer_config(struct peer *dst, struct peer *src);
1355 extern char *peer_uptime(time_t, char *, size_t, u_char, json_object *);
1356
1357 extern int bgp_config_write(struct vty *);
1358
1359 extern void bgp_master_init(struct thread_master *master);
1360
1361 extern void bgp_init(void);
1362 extern void bgp_pthreads_run(void);
1363 extern void bgp_pthreads_finish(void);
1364 extern void bgp_route_map_init(void);
1365 extern void bgp_session_reset(struct peer *);
1366
1367 extern int bgp_option_set(int);
1368 extern int bgp_option_unset(int);
1369 extern int bgp_option_check(int);
1370
1371 extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1372 extern void bgp_instance_up(struct bgp *);
1373 extern void bgp_instance_down(struct bgp *);
1374 extern int bgp_delete(struct bgp *);
1375
1376 extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1377 vrf_id_t old_vrf_id, bool create);
1378
1379 extern int bgp_flag_set(struct bgp *, int);
1380 extern int bgp_flag_unset(struct bgp *, int);
1381 extern int bgp_flag_check(struct bgp *, int);
1382
1383 extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1384 extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
1385
1386 extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1387 extern int bgp_cluster_id_unset(struct bgp *);
1388
1389 extern int bgp_confederation_id_set(struct bgp *, as_t);
1390 extern int bgp_confederation_id_unset(struct bgp *);
1391 extern int bgp_confederation_peers_check(struct bgp *, as_t);
1392
1393 extern int bgp_confederation_peers_add(struct bgp *, as_t);
1394 extern int bgp_confederation_peers_remove(struct bgp *, as_t);
1395
1396 extern int bgp_timers_set(struct bgp *, u_int32_t keepalive,
1397 u_int32_t holdtime);
1398 extern int bgp_timers_unset(struct bgp *);
1399
1400 extern int bgp_default_local_preference_set(struct bgp *, u_int32_t);
1401 extern int bgp_default_local_preference_unset(struct bgp *);
1402
1403 extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, u_int32_t);
1404 extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
1405
1406 extern int bgp_listen_limit_set(struct bgp *, int);
1407 extern int bgp_listen_limit_unset(struct bgp *);
1408
1409 extern int bgp_update_delay_active(struct bgp *);
1410 extern int bgp_update_delay_configured(struct bgp *);
1411 extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
1412 extern void peer_as_change(struct peer *, as_t, int);
1413 extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1414 int, afi_t, safi_t);
1415 extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1416 extern int peer_delete(struct peer *peer);
1417 extern int peer_group_delete(struct peer_group *);
1418 extern int peer_group_remote_as_delete(struct peer_group *);
1419 extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
1420
1421 extern int peer_activate(struct peer *, afi_t, safi_t);
1422 extern int peer_deactivate(struct peer *, afi_t, safi_t);
1423 extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
1424
1425 extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1426 struct peer_group *, as_t *);
1427 extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
1428
1429 extern int peer_flag_set(struct peer *, u_int32_t);
1430 extern int peer_flag_unset(struct peer *, u_int32_t);
1431
1432 extern int peer_af_flag_set(struct peer *, afi_t, safi_t, u_int32_t);
1433 extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, u_int32_t);
1434 extern int peer_af_flag_check(struct peer *, afi_t, safi_t, u_int32_t);
1435
1436 extern int peer_ebgp_multihop_set(struct peer *, int);
1437 extern int peer_ebgp_multihop_unset(struct peer *);
1438 extern int is_ebgp_multihop_configured(struct peer *peer);
1439
1440 extern int peer_description_set(struct peer *, const char *);
1441 extern int peer_description_unset(struct peer *);
1442
1443 extern int peer_update_source_if_set(struct peer *, const char *);
1444 extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1445 extern int peer_update_source_unset(struct peer *);
1446
1447 extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1448 const char *);
1449 extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
1450
1451 extern int peer_port_set(struct peer *, u_int16_t);
1452 extern int peer_port_unset(struct peer *);
1453
1454 extern int peer_weight_set(struct peer *, afi_t, safi_t, u_int16_t);
1455 extern int peer_weight_unset(struct peer *, afi_t, safi_t);
1456
1457 extern int peer_timers_set(struct peer *, u_int32_t keepalive,
1458 u_int32_t holdtime);
1459 extern int peer_timers_unset(struct peer *);
1460
1461 extern int peer_timers_connect_set(struct peer *, u_int32_t);
1462 extern int peer_timers_connect_unset(struct peer *);
1463
1464 extern int peer_advertise_interval_set(struct peer *, u_int32_t);
1465 extern int peer_advertise_interval_unset(struct peer *);
1466
1467 extern void peer_interface_set(struct peer *, const char *);
1468 extern void peer_interface_unset(struct peer *);
1469
1470 extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1471 extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
1472
1473 extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1474 extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
1475
1476 extern int peer_local_as_set(struct peer *, as_t, int, int);
1477 extern int peer_local_as_unset(struct peer *);
1478
1479 extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1480 const char *);
1481 extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
1482
1483 extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1484 extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
1485
1486 extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1487 extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
1488
1489 extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
1490
1491 extern int peer_password_set(struct peer *, const char *);
1492 extern int peer_password_unset(struct peer *);
1493
1494 extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
1495
1496 extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, u_int32_t,
1497 u_char, int, u_int16_t);
1498 extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
1499
1500 extern int peer_clear(struct peer *, struct listnode **);
1501 extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
1502
1503 extern int peer_ttl_security_hops_set(struct peer *, int);
1504 extern int peer_ttl_security_hops_unset(struct peer *);
1505
1506 extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1507 extern int peer_tx_shutdown_message_unset(struct peer *);
1508
1509 extern int bgp_route_map_update_timer(struct thread *thread);
1510 extern void bgp_route_map_terminate(void);
1511
1512 extern int peer_cmp(struct peer *p1, struct peer *p2);
1513
1514 extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
1515 afi_t *afi, safi_t *safi);
1516 extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
1517 iana_afi_t *pkt_afi,
1518 iana_safi_t *pkt_safi);
1519
1520 extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1521 extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1522 extern int peer_af_delete(struct peer *, afi_t, safi_t);
1523
1524 extern void bgp_close(void);
1525 extern void bgp_free(struct bgp *);
1526
1527 static inline struct bgp *bgp_lock(struct bgp *bgp)
1528 {
1529 bgp->lock++;
1530 return bgp;
1531 }
1532
1533 static inline void bgp_unlock(struct bgp *bgp)
1534 {
1535 assert(bgp->lock > 0);
1536 if (--bgp->lock == 0)
1537 bgp_free(bgp);
1538 }
1539
1540 static inline int afindex(afi_t afi, safi_t safi)
1541 {
1542 switch (afi) {
1543 case AFI_IP:
1544 switch (safi) {
1545 case SAFI_UNICAST:
1546 return BGP_AF_IPV4_UNICAST;
1547 break;
1548 case SAFI_MULTICAST:
1549 return BGP_AF_IPV4_MULTICAST;
1550 break;
1551 case SAFI_LABELED_UNICAST:
1552 return BGP_AF_IPV4_LBL_UNICAST;
1553 break;
1554 case SAFI_MPLS_VPN:
1555 return BGP_AF_IPV4_VPN;
1556 break;
1557 case SAFI_ENCAP:
1558 return BGP_AF_IPV4_ENCAP;
1559 break;
1560 default:
1561 return BGP_AF_MAX;
1562 break;
1563 }
1564 break;
1565 case AFI_IP6:
1566 switch (safi) {
1567 case SAFI_UNICAST:
1568 return BGP_AF_IPV6_UNICAST;
1569 break;
1570 case SAFI_MULTICAST:
1571 return BGP_AF_IPV6_MULTICAST;
1572 break;
1573 case SAFI_LABELED_UNICAST:
1574 return BGP_AF_IPV6_LBL_UNICAST;
1575 break;
1576 case SAFI_MPLS_VPN:
1577 return BGP_AF_IPV6_VPN;
1578 break;
1579 case SAFI_ENCAP:
1580 return BGP_AF_IPV6_ENCAP;
1581 break;
1582 default:
1583 return BGP_AF_MAX;
1584 break;
1585 }
1586 break;
1587 case AFI_L2VPN:
1588 switch (safi) {
1589 case SAFI_EVPN:
1590 return BGP_AF_L2VPN_EVPN;
1591 break;
1592 default:
1593 return BGP_AF_MAX;
1594 break;
1595 }
1596 default:
1597 return BGP_AF_MAX;
1598 break;
1599 }
1600 }
1601
1602 /* If the peer is not a peer-group but is bound to a peer-group return 1 */
1603 static inline int peer_group_active(struct peer *peer)
1604 {
1605 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1606 return 1;
1607 return 0;
1608 }
1609
1610 /* If peer is negotiated at least one address family return 1. */
1611 static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
1612 {
1613 if (peer->afc_nego[afi][SAFI_UNICAST]
1614 || peer->afc_nego[afi][SAFI_MULTICAST]
1615 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1616 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1617 || peer->afc_nego[afi][SAFI_ENCAP]
1618 || peer->afc_nego[afi][SAFI_EVPN])
1619 return 1;
1620 return 0;
1621 }
1622
1623 /* If at least one address family activated for group, return 1. */
1624 static inline int peer_group_af_configured(struct peer_group *group)
1625 {
1626 struct peer *peer = group->conf;
1627
1628 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1629 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
1630 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1631 || peer->afc[AFI_IP6][SAFI_UNICAST]
1632 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1633 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1634 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
1635 || peer->afc[AFI_IP6][SAFI_ENCAP]
1636 || peer->afc[AFI_L2VPN][SAFI_EVPN])
1637 return 1;
1638 return 0;
1639 }
1640
1641 static inline char *timestamp_string(time_t ts)
1642 {
1643 time_t tbuf;
1644 tbuf = time(NULL) - (bgp_clock() - ts);
1645 return ctime(&tbuf);
1646 }
1647
1648 static inline int peer_established(struct peer *peer)
1649 {
1650 if (peer->status == Established)
1651 return 1;
1652 return 0;
1653 }
1654
1655 static inline int peer_dynamic_neighbor(struct peer *peer)
1656 {
1657 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1658 }
1659
1660 static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
1661 {
1662 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
1663 }
1664
1665 /* Lookup VRF for BGP instance based on its type. */
1666 static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
1667 {
1668 struct vrf *vrf;
1669
1670 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1671 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1672 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1673 vrf = vrf_lookup_by_name(bgp->name);
1674 else
1675 vrf = NULL;
1676
1677 return vrf;
1678 }
1679
1680 /* Link BGP instance to VRF. */
1681 static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
1682 {
1683 bgp->vrf_id = vrf->vrf_id;
1684 if (vrf->info != (void *)bgp)
1685 vrf->info = (void *)bgp_lock(bgp);
1686 }
1687
1688 /* Unlink BGP instance from VRF. */
1689 static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
1690 {
1691 if (vrf->info == (void *)bgp) {
1692 vrf->info = NULL;
1693 bgp_unlock(bgp);
1694 }
1695 bgp->vrf_id = VRF_UNKNOWN;
1696 }
1697
1698 extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
1699
1700 /* For benefit of rfapi */
1701 extern struct peer *peer_new(struct bgp *bgp);
1702
1703 #endif /* _QUAGGA_BGPD_H */
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