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1 | /* BGP routing information | |
2 | * Copyright (C) 1996, 97, 98, 99 Kunihiro Ishiguro | |
3 | * Copyright (C) 2016 Job Snijders <job@instituut.net> | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | #include <math.h> | |
24 | ||
25 | #include "printfrr.h" | |
26 | #include "frrstr.h" | |
27 | #include "prefix.h" | |
28 | #include "linklist.h" | |
29 | #include "memory.h" | |
30 | #include "command.h" | |
31 | #include "stream.h" | |
32 | #include "filter.h" | |
33 | #include "log.h" | |
34 | #include "routemap.h" | |
35 | #include "buffer.h" | |
36 | #include "sockunion.h" | |
37 | #include "plist.h" | |
38 | #include "thread.h" | |
39 | #include "workqueue.h" | |
40 | #include "queue.h" | |
41 | #include "memory.h" | |
42 | #include "srv6.h" | |
43 | #include "lib/json.h" | |
44 | #include "lib_errors.h" | |
45 | #include "zclient.h" | |
46 | #include "bgpd/bgpd.h" | |
47 | #include "bgpd/bgp_table.h" | |
48 | #include "bgpd/bgp_route.h" | |
49 | #include "bgpd/bgp_attr.h" | |
50 | #include "bgpd/bgp_debug.h" | |
51 | #include "bgpd/bgp_errors.h" | |
52 | #include "bgpd/bgp_aspath.h" | |
53 | #include "bgpd/bgp_regex.h" | |
54 | #include "bgpd/bgp_community.h" | |
55 | #include "bgpd/bgp_community_alias.h" | |
56 | #include "bgpd/bgp_ecommunity.h" | |
57 | #include "bgpd/bgp_lcommunity.h" | |
58 | #include "bgpd/bgp_clist.h" | |
59 | #include "bgpd/bgp_packet.h" | |
60 | #include "bgpd/bgp_filter.h" | |
61 | #include "bgpd/bgp_fsm.h" | |
62 | #include "bgpd/bgp_mplsvpn.h" | |
63 | #include "bgpd/bgp_nexthop.h" | |
64 | #include "bgpd/bgp_damp.h" | |
65 | #include "bgpd/bgp_advertise.h" | |
66 | #include "bgpd/bgp_zebra.h" | |
67 | #include "bgpd/bgp_vty.h" | |
68 | #include "bgpd/bgp_mpath.h" | |
69 | #include "bgpd/bgp_nht.h" | |
70 | #include "bgpd/bgp_updgrp.h" | |
71 | #include "bgpd/bgp_label.h" | |
72 | #include "bgpd/bgp_addpath.h" | |
73 | #include "bgpd/bgp_mac.h" | |
74 | #include "bgpd/bgp_network.h" | |
75 | #include "bgpd/bgp_trace.h" | |
76 | #include "bgpd/bgp_rpki.h" | |
77 | ||
78 | #ifdef ENABLE_BGP_VNC | |
79 | #include "bgpd/rfapi/rfapi_backend.h" | |
80 | #include "bgpd/rfapi/vnc_import_bgp.h" | |
81 | #include "bgpd/rfapi/vnc_export_bgp.h" | |
82 | #endif | |
83 | #include "bgpd/bgp_encap_types.h" | |
84 | #include "bgpd/bgp_encap_tlv.h" | |
85 | #include "bgpd/bgp_evpn.h" | |
86 | #include "bgpd/bgp_evpn_mh.h" | |
87 | #include "bgpd/bgp_evpn_vty.h" | |
88 | #include "bgpd/bgp_flowspec.h" | |
89 | #include "bgpd/bgp_flowspec_util.h" | |
90 | #include "bgpd/bgp_pbr.h" | |
91 | ||
92 | #ifndef VTYSH_EXTRACT_PL | |
93 | #include "bgpd/bgp_route_clippy.c" | |
94 | #endif | |
95 | ||
96 | DEFINE_HOOK(bgp_snmp_update_stats, | |
97 | (struct bgp_node *rn, struct bgp_path_info *pi, bool added), | |
98 | (rn, pi, added)); | |
99 | ||
100 | DEFINE_HOOK(bgp_rpki_prefix_status, | |
101 | (struct peer *peer, struct attr *attr, | |
102 | const struct prefix *prefix), | |
103 | (peer, attr, prefix)); | |
104 | ||
105 | /* Render dest to prefix_rd based on safi */ | |
106 | static const struct prefix_rd *bgp_rd_from_dest(const struct bgp_dest *dest, | |
107 | safi_t safi); | |
108 | ||
109 | /* Extern from bgp_dump.c */ | |
110 | extern const char *bgp_origin_str[]; | |
111 | extern const char *bgp_origin_long_str[]; | |
112 | ||
113 | /* PMSI strings. */ | |
114 | #define PMSI_TNLTYPE_STR_NO_INFO "No info" | |
115 | #define PMSI_TNLTYPE_STR_DEFAULT PMSI_TNLTYPE_STR_NO_INFO | |
116 | static const struct message bgp_pmsi_tnltype_str[] = { | |
117 | {PMSI_TNLTYPE_NO_INFO, PMSI_TNLTYPE_STR_NO_INFO}, | |
118 | {PMSI_TNLTYPE_RSVP_TE_P2MP, "RSVP-TE P2MP"}, | |
119 | {PMSI_TNLTYPE_MLDP_P2MP, "mLDP P2MP"}, | |
120 | {PMSI_TNLTYPE_PIM_SSM, "PIM-SSM"}, | |
121 | {PMSI_TNLTYPE_PIM_SM, "PIM-SM"}, | |
122 | {PMSI_TNLTYPE_PIM_BIDIR, "PIM-BIDIR"}, | |
123 | {PMSI_TNLTYPE_INGR_REPL, "Ingress Replication"}, | |
124 | {PMSI_TNLTYPE_MLDP_MP2MP, "mLDP MP2MP"}, | |
125 | {0} | |
126 | }; | |
127 | ||
128 | #define VRFID_NONE_STR "-" | |
129 | #define SOFT_RECONFIG_TASK_MAX_PREFIX 25000 | |
130 | ||
131 | DEFINE_HOOK(bgp_process, | |
132 | (struct bgp * bgp, afi_t afi, safi_t safi, struct bgp_dest *bn, | |
133 | struct peer *peer, bool withdraw), | |
134 | (bgp, afi, safi, bn, peer, withdraw)); | |
135 | ||
136 | /** Test if path is suppressed. */ | |
137 | static bool bgp_path_suppressed(struct bgp_path_info *pi) | |
138 | { | |
139 | if (pi->extra == NULL || pi->extra->aggr_suppressors == NULL) | |
140 | return false; | |
141 | ||
142 | return listcount(pi->extra->aggr_suppressors) > 0; | |
143 | } | |
144 | ||
145 | struct bgp_dest *bgp_afi_node_get(struct bgp_table *table, afi_t afi, | |
146 | safi_t safi, const struct prefix *p, | |
147 | struct prefix_rd *prd) | |
148 | { | |
149 | struct bgp_dest *dest; | |
150 | struct bgp_dest *pdest = NULL; | |
151 | ||
152 | assert(table); | |
153 | ||
154 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
155 | || (safi == SAFI_EVPN)) { | |
156 | pdest = bgp_node_get(table, (struct prefix *)prd); | |
157 | ||
158 | if (!bgp_dest_has_bgp_path_info_data(pdest)) | |
159 | bgp_dest_set_bgp_table_info( | |
160 | pdest, bgp_table_init(table->bgp, afi, safi)); | |
161 | else | |
162 | bgp_dest_unlock_node(pdest); | |
163 | table = bgp_dest_get_bgp_table_info(pdest); | |
164 | } | |
165 | ||
166 | dest = bgp_node_get(table, p); | |
167 | ||
168 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
169 | || (safi == SAFI_EVPN)) | |
170 | dest->pdest = pdest; | |
171 | ||
172 | return dest; | |
173 | } | |
174 | ||
175 | struct bgp_dest *bgp_afi_node_lookup(struct bgp_table *table, afi_t afi, | |
176 | safi_t safi, const struct prefix *p, | |
177 | struct prefix_rd *prd) | |
178 | { | |
179 | struct bgp_dest *dest; | |
180 | struct bgp_dest *pdest = NULL; | |
181 | ||
182 | if (!table) | |
183 | return NULL; | |
184 | ||
185 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
186 | || (safi == SAFI_EVPN)) { | |
187 | pdest = bgp_node_lookup(table, (struct prefix *)prd); | |
188 | if (!pdest) | |
189 | return NULL; | |
190 | ||
191 | if (!bgp_dest_has_bgp_path_info_data(pdest)) { | |
192 | bgp_dest_unlock_node(pdest); | |
193 | return NULL; | |
194 | } | |
195 | ||
196 | table = bgp_dest_get_bgp_table_info(pdest); | |
197 | } | |
198 | ||
199 | dest = bgp_node_lookup(table, p); | |
200 | ||
201 | return dest; | |
202 | } | |
203 | ||
204 | /* Allocate bgp_path_info_extra */ | |
205 | static struct bgp_path_info_extra *bgp_path_info_extra_new(void) | |
206 | { | |
207 | struct bgp_path_info_extra *new; | |
208 | new = XCALLOC(MTYPE_BGP_ROUTE_EXTRA, | |
209 | sizeof(struct bgp_path_info_extra)); | |
210 | new->label[0] = MPLS_INVALID_LABEL; | |
211 | new->num_labels = 0; | |
212 | new->bgp_fs_pbr = NULL; | |
213 | new->bgp_fs_iprule = NULL; | |
214 | return new; | |
215 | } | |
216 | ||
217 | void bgp_path_info_extra_free(struct bgp_path_info_extra **extra) | |
218 | { | |
219 | struct bgp_path_info_extra *e; | |
220 | ||
221 | if (!extra || !*extra) | |
222 | return; | |
223 | ||
224 | e = *extra; | |
225 | if (e->damp_info) | |
226 | bgp_damp_info_free(e->damp_info, 0, e->damp_info->afi, | |
227 | e->damp_info->safi); | |
228 | ||
229 | e->damp_info = NULL; | |
230 | if (e->parent) { | |
231 | struct bgp_path_info *bpi = (struct bgp_path_info *)e->parent; | |
232 | ||
233 | if (bpi->net) { | |
234 | /* FIXME: since multiple e may have the same e->parent | |
235 | * and e->parent->net is holding a refcount for each | |
236 | * of them, we need to do some fudging here. | |
237 | * | |
238 | * WARNING: if bpi->net->lock drops to 0, bpi may be | |
239 | * freed as well (because bpi->net was holding the | |
240 | * last reference to bpi) => write after free! | |
241 | */ | |
242 | unsigned refcount; | |
243 | ||
244 | bpi = bgp_path_info_lock(bpi); | |
245 | refcount = bgp_dest_get_lock_count(bpi->net) - 1; | |
246 | bgp_dest_unlock_node((struct bgp_dest *)bpi->net); | |
247 | if (!refcount) | |
248 | bpi->net = NULL; | |
249 | bgp_path_info_unlock(bpi); | |
250 | } | |
251 | bgp_path_info_unlock(e->parent); | |
252 | e->parent = NULL; | |
253 | } | |
254 | ||
255 | if (e->bgp_orig) | |
256 | bgp_unlock(e->bgp_orig); | |
257 | ||
258 | if (e->aggr_suppressors) | |
259 | list_delete(&e->aggr_suppressors); | |
260 | ||
261 | if (e->mh_info) | |
262 | bgp_evpn_path_mh_info_free(e->mh_info); | |
263 | ||
264 | if ((*extra)->bgp_fs_iprule) | |
265 | list_delete(&((*extra)->bgp_fs_iprule)); | |
266 | if ((*extra)->bgp_fs_pbr) | |
267 | list_delete(&((*extra)->bgp_fs_pbr)); | |
268 | XFREE(MTYPE_BGP_ROUTE_EXTRA, *extra); | |
269 | } | |
270 | ||
271 | /* Get bgp_path_info extra information for the given bgp_path_info, lazy | |
272 | * allocated if required. | |
273 | */ | |
274 | struct bgp_path_info_extra *bgp_path_info_extra_get(struct bgp_path_info *pi) | |
275 | { | |
276 | if (!pi->extra) | |
277 | pi->extra = bgp_path_info_extra_new(); | |
278 | return pi->extra; | |
279 | } | |
280 | ||
281 | /* Free bgp route information. */ | |
282 | static void bgp_path_info_free(struct bgp_path_info *path) | |
283 | { | |
284 | bgp_attr_unintern(&path->attr); | |
285 | ||
286 | bgp_unlink_nexthop(path); | |
287 | bgp_path_info_extra_free(&path->extra); | |
288 | bgp_path_info_mpath_free(&path->mpath); | |
289 | if (path->net) | |
290 | bgp_addpath_free_info_data(&path->tx_addpath, | |
291 | &path->net->tx_addpath); | |
292 | ||
293 | peer_unlock(path->peer); /* bgp_path_info peer reference */ | |
294 | ||
295 | XFREE(MTYPE_BGP_ROUTE, path); | |
296 | } | |
297 | ||
298 | struct bgp_path_info *bgp_path_info_lock(struct bgp_path_info *path) | |
299 | { | |
300 | path->lock++; | |
301 | return path; | |
302 | } | |
303 | ||
304 | struct bgp_path_info *bgp_path_info_unlock(struct bgp_path_info *path) | |
305 | { | |
306 | assert(path && path->lock > 0); | |
307 | path->lock--; | |
308 | ||
309 | if (path->lock == 0) { | |
310 | bgp_path_info_free(path); | |
311 | return NULL; | |
312 | } | |
313 | ||
314 | return path; | |
315 | } | |
316 | ||
317 | /* This function sets flag BGP_NODE_SELECT_DEFER based on condition */ | |
318 | static int bgp_dest_set_defer_flag(struct bgp_dest *dest, bool delete) | |
319 | { | |
320 | struct peer *peer; | |
321 | struct bgp_path_info *old_pi, *nextpi; | |
322 | bool set_flag = false; | |
323 | struct bgp *bgp = NULL; | |
324 | struct bgp_table *table = NULL; | |
325 | afi_t afi = 0; | |
326 | safi_t safi = 0; | |
327 | ||
328 | /* If the flag BGP_NODE_SELECT_DEFER is set and new path is added | |
329 | * then the route selection is deferred | |
330 | */ | |
331 | if (CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER) && (!delete)) | |
332 | return 0; | |
333 | ||
334 | if (CHECK_FLAG(dest->flags, BGP_NODE_PROCESS_SCHEDULED)) { | |
335 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
336 | zlog_debug( | |
337 | "Route %pBD is in workqueue and being processed, not deferred.", | |
338 | dest); | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | table = bgp_dest_table(dest); | |
344 | if (table) { | |
345 | bgp = table->bgp; | |
346 | afi = table->afi; | |
347 | safi = table->safi; | |
348 | } | |
349 | ||
350 | for (old_pi = bgp_dest_get_bgp_path_info(dest); | |
351 | (old_pi != NULL) && (nextpi = old_pi->next, 1); old_pi = nextpi) { | |
352 | if (CHECK_FLAG(old_pi->flags, BGP_PATH_SELECTED)) | |
353 | continue; | |
354 | ||
355 | /* Route selection is deferred if there is a stale path which | |
356 | * which indicates peer is in restart mode | |
357 | */ | |
358 | if (CHECK_FLAG(old_pi->flags, BGP_PATH_STALE) | |
359 | && (old_pi->sub_type == BGP_ROUTE_NORMAL)) { | |
360 | set_flag = true; | |
361 | } else { | |
362 | /* If the peer is graceful restart capable and peer is | |
363 | * restarting mode, set the flag BGP_NODE_SELECT_DEFER | |
364 | */ | |
365 | peer = old_pi->peer; | |
366 | if (BGP_PEER_GRACEFUL_RESTART_CAPABLE(peer) | |
367 | && BGP_PEER_RESTARTING_MODE(peer) | |
368 | && (old_pi | |
369 | && old_pi->sub_type == BGP_ROUTE_NORMAL)) { | |
370 | set_flag = true; | |
371 | } | |
372 | } | |
373 | if (set_flag) | |
374 | break; | |
375 | } | |
376 | ||
377 | /* Set the flag BGP_NODE_SELECT_DEFER if route selection deferral timer | |
378 | * is active | |
379 | */ | |
380 | if (set_flag && table) { | |
381 | if (bgp && (bgp->gr_info[afi][safi].t_select_deferral)) { | |
382 | if (!CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER)) | |
383 | bgp->gr_info[afi][safi].gr_deferred++; | |
384 | SET_FLAG(dest->flags, BGP_NODE_SELECT_DEFER); | |
385 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
386 | zlog_debug("DEFER route %pBD, dest %p", dest, | |
387 | dest); | |
388 | return 0; | |
389 | } | |
390 | } | |
391 | return -1; | |
392 | } | |
393 | ||
394 | void bgp_path_info_add(struct bgp_dest *dest, struct bgp_path_info *pi) | |
395 | { | |
396 | struct bgp_path_info *top; | |
397 | ||
398 | top = bgp_dest_get_bgp_path_info(dest); | |
399 | ||
400 | pi->next = top; | |
401 | pi->prev = NULL; | |
402 | if (top) | |
403 | top->prev = pi; | |
404 | bgp_dest_set_bgp_path_info(dest, pi); | |
405 | ||
406 | bgp_path_info_lock(pi); | |
407 | bgp_dest_lock_node(dest); | |
408 | peer_lock(pi->peer); /* bgp_path_info peer reference */ | |
409 | bgp_dest_set_defer_flag(dest, false); | |
410 | hook_call(bgp_snmp_update_stats, dest, pi, true); | |
411 | } | |
412 | ||
413 | /* Do the actual removal of info from RIB, for use by bgp_process | |
414 | completion callback *only* */ | |
415 | void bgp_path_info_reap(struct bgp_dest *dest, struct bgp_path_info *pi) | |
416 | { | |
417 | if (pi->next) | |
418 | pi->next->prev = pi->prev; | |
419 | if (pi->prev) | |
420 | pi->prev->next = pi->next; | |
421 | else | |
422 | bgp_dest_set_bgp_path_info(dest, pi->next); | |
423 | ||
424 | bgp_path_info_mpath_dequeue(pi); | |
425 | bgp_path_info_unlock(pi); | |
426 | hook_call(bgp_snmp_update_stats, dest, pi, false); | |
427 | bgp_dest_unlock_node(dest); | |
428 | } | |
429 | ||
430 | void bgp_path_info_delete(struct bgp_dest *dest, struct bgp_path_info *pi) | |
431 | { | |
432 | bgp_path_info_set_flag(dest, pi, BGP_PATH_REMOVED); | |
433 | /* set of previous already took care of pcount */ | |
434 | UNSET_FLAG(pi->flags, BGP_PATH_VALID); | |
435 | } | |
436 | ||
437 | /* undo the effects of a previous call to bgp_path_info_delete; typically | |
438 | called when a route is deleted and then quickly re-added before the | |
439 | deletion has been processed */ | |
440 | void bgp_path_info_restore(struct bgp_dest *dest, struct bgp_path_info *pi) | |
441 | { | |
442 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_REMOVED); | |
443 | /* unset of previous already took care of pcount */ | |
444 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
445 | } | |
446 | ||
447 | /* Adjust pcount as required */ | |
448 | static void bgp_pcount_adjust(struct bgp_dest *dest, struct bgp_path_info *pi) | |
449 | { | |
450 | struct bgp_table *table; | |
451 | ||
452 | assert(dest && bgp_dest_table(dest)); | |
453 | assert(pi && pi->peer && pi->peer->bgp); | |
454 | ||
455 | table = bgp_dest_table(dest); | |
456 | ||
457 | if (pi->peer == pi->peer->bgp->peer_self) | |
458 | return; | |
459 | ||
460 | if (!BGP_PATH_COUNTABLE(pi) | |
461 | && CHECK_FLAG(pi->flags, BGP_PATH_COUNTED)) { | |
462 | ||
463 | UNSET_FLAG(pi->flags, BGP_PATH_COUNTED); | |
464 | ||
465 | /* slight hack, but more robust against errors. */ | |
466 | if (pi->peer->pcount[table->afi][table->safi]) | |
467 | pi->peer->pcount[table->afi][table->safi]--; | |
468 | else | |
469 | flog_err(EC_LIB_DEVELOPMENT, | |
470 | "Asked to decrement 0 prefix count for peer"); | |
471 | } else if (BGP_PATH_COUNTABLE(pi) | |
472 | && !CHECK_FLAG(pi->flags, BGP_PATH_COUNTED)) { | |
473 | SET_FLAG(pi->flags, BGP_PATH_COUNTED); | |
474 | pi->peer->pcount[table->afi][table->safi]++; | |
475 | } | |
476 | } | |
477 | ||
478 | static int bgp_label_index_differs(struct bgp_path_info *pi1, | |
479 | struct bgp_path_info *pi2) | |
480 | { | |
481 | return (!(pi1->attr->label_index == pi2->attr->label_index)); | |
482 | } | |
483 | ||
484 | /* Set/unset bgp_path_info flags, adjusting any other state as needed. | |
485 | * This is here primarily to keep prefix-count in check. | |
486 | */ | |
487 | void bgp_path_info_set_flag(struct bgp_dest *dest, struct bgp_path_info *pi, | |
488 | uint32_t flag) | |
489 | { | |
490 | SET_FLAG(pi->flags, flag); | |
491 | ||
492 | /* early bath if we know it's not a flag that changes countability state | |
493 | */ | |
494 | if (!CHECK_FLAG(flag, | |
495 | BGP_PATH_VALID | BGP_PATH_HISTORY | BGP_PATH_REMOVED)) | |
496 | return; | |
497 | ||
498 | bgp_pcount_adjust(dest, pi); | |
499 | } | |
500 | ||
501 | void bgp_path_info_unset_flag(struct bgp_dest *dest, struct bgp_path_info *pi, | |
502 | uint32_t flag) | |
503 | { | |
504 | UNSET_FLAG(pi->flags, flag); | |
505 | ||
506 | /* early bath if we know it's not a flag that changes countability state | |
507 | */ | |
508 | if (!CHECK_FLAG(flag, | |
509 | BGP_PATH_VALID | BGP_PATH_HISTORY | BGP_PATH_REMOVED)) | |
510 | return; | |
511 | ||
512 | bgp_pcount_adjust(dest, pi); | |
513 | } | |
514 | ||
515 | /* Get MED value. If MED value is missing and "bgp bestpath | |
516 | missing-as-worst" is specified, treat it as the worst value. */ | |
517 | static uint32_t bgp_med_value(struct attr *attr, struct bgp *bgp) | |
518 | { | |
519 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
520 | return attr->med; | |
521 | else { | |
522 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_MED_MISSING_AS_WORST)) | |
523 | return BGP_MED_MAX; | |
524 | else | |
525 | return 0; | |
526 | } | |
527 | } | |
528 | ||
529 | void bgp_path_info_path_with_addpath_rx_str(struct bgp_path_info *pi, char *buf, | |
530 | size_t buf_len) | |
531 | { | |
532 | if (pi->addpath_rx_id) | |
533 | snprintf(buf, buf_len, "path %s (addpath rxid %d)", | |
534 | pi->peer->host, pi->addpath_rx_id); | |
535 | else | |
536 | snprintf(buf, buf_len, "path %s", pi->peer->host); | |
537 | } | |
538 | ||
539 | ||
540 | /* | |
541 | * Get the ultimate path info. | |
542 | */ | |
543 | struct bgp_path_info *bgp_get_imported_bpi_ultimate(struct bgp_path_info *info) | |
544 | { | |
545 | struct bgp_path_info *bpi_ultimate; | |
546 | ||
547 | if (info->sub_type != BGP_ROUTE_IMPORTED) | |
548 | return info; | |
549 | ||
550 | for (bpi_ultimate = info; | |
551 | bpi_ultimate->extra && bpi_ultimate->extra->parent; | |
552 | bpi_ultimate = bpi_ultimate->extra->parent) | |
553 | ; | |
554 | ||
555 | return bpi_ultimate; | |
556 | } | |
557 | ||
558 | /* Compare two bgp route entity. If 'new' is preferable over 'exist' return 1. | |
559 | */ | |
560 | static int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new, | |
561 | struct bgp_path_info *exist, int *paths_eq, | |
562 | struct bgp_maxpaths_cfg *mpath_cfg, int debug, | |
563 | char *pfx_buf, afi_t afi, safi_t safi, | |
564 | enum bgp_path_selection_reason *reason) | |
565 | { | |
566 | const struct prefix *new_p; | |
567 | struct attr *newattr, *existattr; | |
568 | bgp_peer_sort_t new_sort; | |
569 | bgp_peer_sort_t exist_sort; | |
570 | uint32_t new_pref; | |
571 | uint32_t exist_pref; | |
572 | uint32_t new_med; | |
573 | uint32_t exist_med; | |
574 | uint32_t new_weight; | |
575 | uint32_t exist_weight; | |
576 | uint32_t newm, existm; | |
577 | struct in_addr new_id; | |
578 | struct in_addr exist_id; | |
579 | int new_cluster; | |
580 | int exist_cluster; | |
581 | int internal_as_route; | |
582 | int confed_as_route; | |
583 | int ret = 0; | |
584 | int igp_metric_ret = 0; | |
585 | int peer_sort_ret = -1; | |
586 | char new_buf[PATH_ADDPATH_STR_BUFFER]; | |
587 | char exist_buf[PATH_ADDPATH_STR_BUFFER]; | |
588 | uint32_t new_mm_seq; | |
589 | uint32_t exist_mm_seq; | |
590 | int nh_cmp; | |
591 | esi_t *exist_esi; | |
592 | esi_t *new_esi; | |
593 | bool same_esi; | |
594 | bool old_proxy; | |
595 | bool new_proxy; | |
596 | bool new_origin, exist_origin; | |
597 | struct bgp_path_info *bpi_ultimate; | |
598 | ||
599 | *paths_eq = 0; | |
600 | ||
601 | /* 0. Null check. */ | |
602 | if (new == NULL) { | |
603 | *reason = bgp_path_selection_none; | |
604 | if (debug) | |
605 | zlog_debug("%s: new is NULL", pfx_buf); | |
606 | return 0; | |
607 | } | |
608 | ||
609 | if (debug) { | |
610 | bpi_ultimate = bgp_get_imported_bpi_ultimate(new); | |
611 | bgp_path_info_path_with_addpath_rx_str(bpi_ultimate, new_buf, | |
612 | sizeof(new_buf)); | |
613 | } | |
614 | ||
615 | if (exist == NULL) { | |
616 | *reason = bgp_path_selection_first; | |
617 | if (debug) | |
618 | zlog_debug("%s(%s): %s is the initial bestpath", | |
619 | pfx_buf, bgp->name_pretty, new_buf); | |
620 | return 1; | |
621 | } | |
622 | ||
623 | if (debug) { | |
624 | bpi_ultimate = bgp_get_imported_bpi_ultimate(exist); | |
625 | bgp_path_info_path_with_addpath_rx_str(bpi_ultimate, exist_buf, | |
626 | sizeof(exist_buf)); | |
627 | zlog_debug("%s(%s): Comparing %s flags 0x%x with %s flags 0x%x", | |
628 | pfx_buf, bgp->name_pretty, new_buf, new->flags, | |
629 | exist_buf, exist->flags); | |
630 | } | |
631 | ||
632 | newattr = new->attr; | |
633 | existattr = exist->attr; | |
634 | ||
635 | /* A BGP speaker that has advertised the "Long-lived Graceful Restart | |
636 | * Capability" to a neighbor MUST perform the following upon receiving | |
637 | * a route from that neighbor with the "LLGR_STALE" community, or upon | |
638 | * attaching the "LLGR_STALE" community itself per Section 4.2: | |
639 | * | |
640 | * Treat the route as the least-preferred in route selection (see | |
641 | * below). See the Risks of Depreferencing Routes section (Section 5.2) | |
642 | * for a discussion of potential risks inherent in doing this. | |
643 | */ | |
644 | if (bgp_attr_get_community(newattr) && | |
645 | community_include(bgp_attr_get_community(newattr), | |
646 | COMMUNITY_LLGR_STALE)) { | |
647 | if (debug) | |
648 | zlog_debug( | |
649 | "%s: %s wins over %s due to LLGR_STALE community", | |
650 | pfx_buf, new_buf, exist_buf); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | if (bgp_attr_get_community(existattr) && | |
655 | community_include(bgp_attr_get_community(existattr), | |
656 | COMMUNITY_LLGR_STALE)) { | |
657 | if (debug) | |
658 | zlog_debug( | |
659 | "%s: %s loses to %s due to LLGR_STALE community", | |
660 | pfx_buf, new_buf, exist_buf); | |
661 | return 1; | |
662 | } | |
663 | ||
664 | new_p = bgp_dest_get_prefix(new->net); | |
665 | ||
666 | /* For EVPN routes, we cannot just go by local vs remote, we have to | |
667 | * look at the MAC mobility sequence number, if present. | |
668 | */ | |
669 | if ((safi == SAFI_EVPN) | |
670 | && (new_p->u.prefix_evpn.route_type == BGP_EVPN_MAC_IP_ROUTE)) { | |
671 | /* This is an error condition described in RFC 7432 Section | |
672 | * 15.2. The RFC | |
673 | * states that in this scenario "the PE MUST alert the operator" | |
674 | * but it | |
675 | * does not state what other action to take. In order to provide | |
676 | * some | |
677 | * consistency in this scenario we are going to prefer the path | |
678 | * with the | |
679 | * sticky flag. | |
680 | */ | |
681 | if (newattr->sticky != existattr->sticky) { | |
682 | if (!debug) { | |
683 | prefix2str(new_p, pfx_buf, | |
684 | sizeof(*pfx_buf) | |
685 | * PREFIX2STR_BUFFER); | |
686 | bgp_path_info_path_with_addpath_rx_str( | |
687 | new, new_buf, sizeof(new_buf)); | |
688 | bgp_path_info_path_with_addpath_rx_str( | |
689 | exist, exist_buf, sizeof(exist_buf)); | |
690 | } | |
691 | ||
692 | if (newattr->sticky && !existattr->sticky) { | |
693 | *reason = bgp_path_selection_evpn_sticky_mac; | |
694 | if (debug) | |
695 | zlog_debug( | |
696 | "%s: %s wins over %s due to sticky MAC flag", | |
697 | pfx_buf, new_buf, exist_buf); | |
698 | return 1; | |
699 | } | |
700 | ||
701 | if (!newattr->sticky && existattr->sticky) { | |
702 | *reason = bgp_path_selection_evpn_sticky_mac; | |
703 | if (debug) | |
704 | zlog_debug( | |
705 | "%s: %s loses to %s due to sticky MAC flag", | |
706 | pfx_buf, new_buf, exist_buf); | |
707 | return 0; | |
708 | } | |
709 | } | |
710 | ||
711 | new_esi = bgp_evpn_attr_get_esi(newattr); | |
712 | exist_esi = bgp_evpn_attr_get_esi(existattr); | |
713 | if (bgp_evpn_is_esi_valid(new_esi) && | |
714 | !memcmp(new_esi, exist_esi, sizeof(esi_t))) { | |
715 | same_esi = true; | |
716 | } else { | |
717 | same_esi = false; | |
718 | } | |
719 | ||
720 | /* If both paths have the same non-zero ES and | |
721 | * one path is local it wins. | |
722 | * PS: Note the local path wins even if the remote | |
723 | * has the higher MM seq. The local path's | |
724 | * MM seq will be fixed up to match the highest | |
725 | * rem seq, subsequently. | |
726 | */ | |
727 | if (same_esi) { | |
728 | char esi_buf[ESI_STR_LEN]; | |
729 | ||
730 | if (bgp_evpn_is_path_local(bgp, new)) { | |
731 | *reason = bgp_path_selection_evpn_local_path; | |
732 | if (debug) | |
733 | zlog_debug( | |
734 | "%s: %s wins over %s as ES %s is same and local", | |
735 | pfx_buf, new_buf, exist_buf, | |
736 | esi_to_str(new_esi, esi_buf, | |
737 | sizeof(esi_buf))); | |
738 | return 1; | |
739 | } | |
740 | if (bgp_evpn_is_path_local(bgp, exist)) { | |
741 | *reason = bgp_path_selection_evpn_local_path; | |
742 | if (debug) | |
743 | zlog_debug( | |
744 | "%s: %s loses to %s as ES %s is same and local", | |
745 | pfx_buf, new_buf, exist_buf, | |
746 | esi_to_str(new_esi, esi_buf, | |
747 | sizeof(esi_buf))); | |
748 | return 0; | |
749 | } | |
750 | } | |
751 | ||
752 | new_mm_seq = mac_mobility_seqnum(newattr); | |
753 | exist_mm_seq = mac_mobility_seqnum(existattr); | |
754 | ||
755 | if (new_mm_seq > exist_mm_seq) { | |
756 | *reason = bgp_path_selection_evpn_seq; | |
757 | if (debug) | |
758 | zlog_debug( | |
759 | "%s: %s wins over %s due to MM seq %u > %u", | |
760 | pfx_buf, new_buf, exist_buf, new_mm_seq, | |
761 | exist_mm_seq); | |
762 | return 1; | |
763 | } | |
764 | ||
765 | if (new_mm_seq < exist_mm_seq) { | |
766 | *reason = bgp_path_selection_evpn_seq; | |
767 | if (debug) | |
768 | zlog_debug( | |
769 | "%s: %s loses to %s due to MM seq %u < %u", | |
770 | pfx_buf, new_buf, exist_buf, new_mm_seq, | |
771 | exist_mm_seq); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | /* if the sequence numbers and ESI are the same and one path | |
776 | * is non-proxy it wins (over proxy) | |
777 | */ | |
778 | new_proxy = bgp_evpn_attr_is_proxy(newattr); | |
779 | old_proxy = bgp_evpn_attr_is_proxy(existattr); | |
780 | if (same_esi && bgp_evpn_attr_is_local_es(newattr) && | |
781 | old_proxy != new_proxy) { | |
782 | if (!new_proxy) { | |
783 | *reason = bgp_path_selection_evpn_non_proxy; | |
784 | if (debug) | |
785 | zlog_debug( | |
786 | "%s: %s wins over %s, same seq/es and non-proxy", | |
787 | pfx_buf, new_buf, exist_buf); | |
788 | return 1; | |
789 | } | |
790 | ||
791 | *reason = bgp_path_selection_evpn_non_proxy; | |
792 | if (debug) | |
793 | zlog_debug( | |
794 | "%s: %s loses to %s, same seq/es and non-proxy", | |
795 | pfx_buf, new_buf, exist_buf); | |
796 | return 0; | |
797 | } | |
798 | ||
799 | /* | |
800 | * if sequence numbers are the same path with the lowest IP | |
801 | * wins | |
802 | */ | |
803 | nh_cmp = bgp_path_info_nexthop_cmp(new, exist); | |
804 | if (nh_cmp < 0) { | |
805 | *reason = bgp_path_selection_evpn_lower_ip; | |
806 | if (debug) | |
807 | zlog_debug( | |
808 | "%s: %s wins over %s due to same MM seq %u and lower IP %pI4", | |
809 | pfx_buf, new_buf, exist_buf, new_mm_seq, | |
810 | &new->attr->nexthop); | |
811 | return 1; | |
812 | } | |
813 | if (nh_cmp > 0) { | |
814 | *reason = bgp_path_selection_evpn_lower_ip; | |
815 | if (debug) | |
816 | zlog_debug( | |
817 | "%s: %s loses to %s due to same MM seq %u and higher IP %pI4", | |
818 | pfx_buf, new_buf, exist_buf, new_mm_seq, | |
819 | &new->attr->nexthop); | |
820 | return 0; | |
821 | } | |
822 | } | |
823 | ||
824 | /* 1. Weight check. */ | |
825 | new_weight = newattr->weight; | |
826 | exist_weight = existattr->weight; | |
827 | ||
828 | if (new_weight > exist_weight) { | |
829 | *reason = bgp_path_selection_weight; | |
830 | if (debug) | |
831 | zlog_debug("%s: %s wins over %s due to weight %d > %d", | |
832 | pfx_buf, new_buf, exist_buf, new_weight, | |
833 | exist_weight); | |
834 | return 1; | |
835 | } | |
836 | ||
837 | if (new_weight < exist_weight) { | |
838 | *reason = bgp_path_selection_weight; | |
839 | if (debug) | |
840 | zlog_debug("%s: %s loses to %s due to weight %d < %d", | |
841 | pfx_buf, new_buf, exist_buf, new_weight, | |
842 | exist_weight); | |
843 | return 0; | |
844 | } | |
845 | ||
846 | /* 2. Local preference check. */ | |
847 | new_pref = exist_pref = bgp->default_local_pref; | |
848 | ||
849 | if (newattr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) | |
850 | new_pref = newattr->local_pref; | |
851 | if (existattr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) | |
852 | exist_pref = existattr->local_pref; | |
853 | ||
854 | if (new_pref > exist_pref) { | |
855 | *reason = bgp_path_selection_local_pref; | |
856 | if (debug) | |
857 | zlog_debug( | |
858 | "%s: %s wins over %s due to localpref %d > %d", | |
859 | pfx_buf, new_buf, exist_buf, new_pref, | |
860 | exist_pref); | |
861 | return 1; | |
862 | } | |
863 | ||
864 | if (new_pref < exist_pref) { | |
865 | *reason = bgp_path_selection_local_pref; | |
866 | if (debug) | |
867 | zlog_debug( | |
868 | "%s: %s loses to %s due to localpref %d < %d", | |
869 | pfx_buf, new_buf, exist_buf, new_pref, | |
870 | exist_pref); | |
871 | return 0; | |
872 | } | |
873 | ||
874 | /* 3. Local route check. We prefer: | |
875 | * - BGP_ROUTE_STATIC | |
876 | * - BGP_ROUTE_AGGREGATE | |
877 | * - BGP_ROUTE_REDISTRIBUTE | |
878 | */ | |
879 | new_origin = !(new->sub_type == BGP_ROUTE_NORMAL || | |
880 | new->sub_type == BGP_ROUTE_IMPORTED); | |
881 | exist_origin = !(exist->sub_type == BGP_ROUTE_NORMAL || | |
882 | exist->sub_type == BGP_ROUTE_IMPORTED); | |
883 | ||
884 | if (new_origin && !exist_origin) { | |
885 | *reason = bgp_path_selection_local_route; | |
886 | if (debug) | |
887 | zlog_debug( | |
888 | "%s: %s wins over %s due to preferred BGP_ROUTE type", | |
889 | pfx_buf, new_buf, exist_buf); | |
890 | return 1; | |
891 | } | |
892 | ||
893 | if (!new_origin && exist_origin) { | |
894 | *reason = bgp_path_selection_local_route; | |
895 | if (debug) | |
896 | zlog_debug( | |
897 | "%s: %s loses to %s due to preferred BGP_ROUTE type", | |
898 | pfx_buf, new_buf, exist_buf); | |
899 | return 0; | |
900 | } | |
901 | ||
902 | /* Here if these are imported routes then get ultimate pi for | |
903 | * path compare. | |
904 | */ | |
905 | new = bgp_get_imported_bpi_ultimate(new); | |
906 | exist = bgp_get_imported_bpi_ultimate(exist); | |
907 | newattr = new->attr; | |
908 | existattr = exist->attr; | |
909 | ||
910 | /* 4. AS path length check. */ | |
911 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_ASPATH_IGNORE)) { | |
912 | int exist_hops = aspath_count_hops(existattr->aspath); | |
913 | int exist_confeds = aspath_count_confeds(existattr->aspath); | |
914 | ||
915 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_ASPATH_CONFED)) { | |
916 | int aspath_hops; | |
917 | ||
918 | aspath_hops = aspath_count_hops(newattr->aspath); | |
919 | aspath_hops += aspath_count_confeds(newattr->aspath); | |
920 | ||
921 | if (aspath_hops < (exist_hops + exist_confeds)) { | |
922 | *reason = bgp_path_selection_confed_as_path; | |
923 | if (debug) | |
924 | zlog_debug( | |
925 | "%s: %s wins over %s due to aspath (with confeds) hopcount %d < %d", | |
926 | pfx_buf, new_buf, exist_buf, | |
927 | aspath_hops, | |
928 | (exist_hops + exist_confeds)); | |
929 | return 1; | |
930 | } | |
931 | ||
932 | if (aspath_hops > (exist_hops + exist_confeds)) { | |
933 | *reason = bgp_path_selection_confed_as_path; | |
934 | if (debug) | |
935 | zlog_debug( | |
936 | "%s: %s loses to %s due to aspath (with confeds) hopcount %d > %d", | |
937 | pfx_buf, new_buf, exist_buf, | |
938 | aspath_hops, | |
939 | (exist_hops + exist_confeds)); | |
940 | return 0; | |
941 | } | |
942 | } else { | |
943 | int newhops = aspath_count_hops(newattr->aspath); | |
944 | ||
945 | if (newhops < exist_hops) { | |
946 | *reason = bgp_path_selection_as_path; | |
947 | if (debug) | |
948 | zlog_debug( | |
949 | "%s: %s wins over %s due to aspath hopcount %d < %d", | |
950 | pfx_buf, new_buf, exist_buf, | |
951 | newhops, exist_hops); | |
952 | return 1; | |
953 | } | |
954 | ||
955 | if (newhops > exist_hops) { | |
956 | *reason = bgp_path_selection_as_path; | |
957 | if (debug) | |
958 | zlog_debug( | |
959 | "%s: %s loses to %s due to aspath hopcount %d > %d", | |
960 | pfx_buf, new_buf, exist_buf, | |
961 | newhops, exist_hops); | |
962 | return 0; | |
963 | } | |
964 | } | |
965 | } | |
966 | ||
967 | /* 5. Origin check. */ | |
968 | if (newattr->origin < existattr->origin) { | |
969 | *reason = bgp_path_selection_origin; | |
970 | if (debug) | |
971 | zlog_debug("%s: %s wins over %s due to ORIGIN %s < %s", | |
972 | pfx_buf, new_buf, exist_buf, | |
973 | bgp_origin_long_str[newattr->origin], | |
974 | bgp_origin_long_str[existattr->origin]); | |
975 | return 1; | |
976 | } | |
977 | ||
978 | if (newattr->origin > existattr->origin) { | |
979 | *reason = bgp_path_selection_origin; | |
980 | if (debug) | |
981 | zlog_debug("%s: %s loses to %s due to ORIGIN %s > %s", | |
982 | pfx_buf, new_buf, exist_buf, | |
983 | bgp_origin_long_str[newattr->origin], | |
984 | bgp_origin_long_str[existattr->origin]); | |
985 | return 0; | |
986 | } | |
987 | ||
988 | /* 6. MED check. */ | |
989 | internal_as_route = (aspath_count_hops(newattr->aspath) == 0 | |
990 | && aspath_count_hops(existattr->aspath) == 0); | |
991 | confed_as_route = (aspath_count_confeds(newattr->aspath) > 0 | |
992 | && aspath_count_confeds(existattr->aspath) > 0 | |
993 | && aspath_count_hops(newattr->aspath) == 0 | |
994 | && aspath_count_hops(existattr->aspath) == 0); | |
995 | ||
996 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_ALWAYS_COMPARE_MED) | |
997 | || (CHECK_FLAG(bgp->flags, BGP_FLAG_MED_CONFED) && confed_as_route) | |
998 | || aspath_cmp_left(newattr->aspath, existattr->aspath) | |
999 | || aspath_cmp_left_confed(newattr->aspath, existattr->aspath) | |
1000 | || internal_as_route) { | |
1001 | new_med = bgp_med_value(new->attr, bgp); | |
1002 | exist_med = bgp_med_value(exist->attr, bgp); | |
1003 | ||
1004 | if (new_med < exist_med) { | |
1005 | *reason = bgp_path_selection_med; | |
1006 | if (debug) | |
1007 | zlog_debug( | |
1008 | "%s: %s wins over %s due to MED %d < %d", | |
1009 | pfx_buf, new_buf, exist_buf, new_med, | |
1010 | exist_med); | |
1011 | return 1; | |
1012 | } | |
1013 | ||
1014 | if (new_med > exist_med) { | |
1015 | *reason = bgp_path_selection_med; | |
1016 | if (debug) | |
1017 | zlog_debug( | |
1018 | "%s: %s loses to %s due to MED %d > %d", | |
1019 | pfx_buf, new_buf, exist_buf, new_med, | |
1020 | exist_med); | |
1021 | return 0; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* 7. Peer type check. */ | |
1026 | new_sort = new->peer->sort; | |
1027 | exist_sort = exist->peer->sort; | |
1028 | ||
1029 | if (new_sort == BGP_PEER_EBGP | |
1030 | && (exist_sort == BGP_PEER_IBGP || exist_sort == BGP_PEER_CONFED)) { | |
1031 | *reason = bgp_path_selection_peer; | |
1032 | if (debug) | |
1033 | zlog_debug( | |
1034 | "%s: %s wins over %s due to eBGP peer > iBGP peer", | |
1035 | pfx_buf, new_buf, exist_buf); | |
1036 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)) | |
1037 | return 1; | |
1038 | peer_sort_ret = 1; | |
1039 | } | |
1040 | ||
1041 | if (exist_sort == BGP_PEER_EBGP | |
1042 | && (new_sort == BGP_PEER_IBGP || new_sort == BGP_PEER_CONFED)) { | |
1043 | *reason = bgp_path_selection_peer; | |
1044 | if (debug) | |
1045 | zlog_debug( | |
1046 | "%s: %s loses to %s due to iBGP peer < eBGP peer", | |
1047 | pfx_buf, new_buf, exist_buf); | |
1048 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)) | |
1049 | return 0; | |
1050 | peer_sort_ret = 0; | |
1051 | } | |
1052 | ||
1053 | /* 8. IGP metric check. */ | |
1054 | newm = existm = 0; | |
1055 | ||
1056 | if (new->extra) | |
1057 | newm = new->extra->igpmetric; | |
1058 | if (exist->extra) | |
1059 | existm = exist->extra->igpmetric; | |
1060 | ||
1061 | if (newm < existm) { | |
1062 | if (debug && peer_sort_ret < 0) | |
1063 | zlog_debug( | |
1064 | "%s: %s wins over %s due to IGP metric %u < %u", | |
1065 | pfx_buf, new_buf, exist_buf, newm, existm); | |
1066 | igp_metric_ret = 1; | |
1067 | } | |
1068 | ||
1069 | if (newm > existm) { | |
1070 | if (debug && peer_sort_ret < 0) | |
1071 | zlog_debug( | |
1072 | "%s: %s loses to %s due to IGP metric %u > %u", | |
1073 | pfx_buf, new_buf, exist_buf, newm, existm); | |
1074 | igp_metric_ret = 0; | |
1075 | } | |
1076 | ||
1077 | /* 9. Same IGP metric. Compare the cluster list length as | |
1078 | representative of IGP hops metric. Rewrite the metric value | |
1079 | pair (newm, existm) with the cluster list length. Prefer the | |
1080 | path with smaller cluster list length. */ | |
1081 | if (newm == existm) { | |
1082 | if (peer_sort_lookup(new->peer) == BGP_PEER_IBGP | |
1083 | && peer_sort_lookup(exist->peer) == BGP_PEER_IBGP | |
1084 | && (mpath_cfg == NULL | |
1085 | || CHECK_FLAG( | |
1086 | mpath_cfg->ibgp_flags, | |
1087 | BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN))) { | |
1088 | newm = BGP_CLUSTER_LIST_LENGTH(new->attr); | |
1089 | existm = BGP_CLUSTER_LIST_LENGTH(exist->attr); | |
1090 | ||
1091 | if (newm < existm) { | |
1092 | if (debug && peer_sort_ret < 0) | |
1093 | zlog_debug( | |
1094 | "%s: %s wins over %s due to CLUSTER_LIST length %u < %u", | |
1095 | pfx_buf, new_buf, exist_buf, | |
1096 | newm, existm); | |
1097 | igp_metric_ret = 1; | |
1098 | } | |
1099 | ||
1100 | if (newm > existm) { | |
1101 | if (debug && peer_sort_ret < 0) | |
1102 | zlog_debug( | |
1103 | "%s: %s loses to %s due to CLUSTER_LIST length %u > %u", | |
1104 | pfx_buf, new_buf, exist_buf, | |
1105 | newm, existm); | |
1106 | igp_metric_ret = 0; | |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* 10. confed-external vs. confed-internal */ | |
1112 | if (CHECK_FLAG(bgp->config, BGP_CONFIG_CONFEDERATION)) { | |
1113 | if (new_sort == BGP_PEER_CONFED | |
1114 | && exist_sort == BGP_PEER_IBGP) { | |
1115 | *reason = bgp_path_selection_confed; | |
1116 | if (debug) | |
1117 | zlog_debug( | |
1118 | "%s: %s wins over %s due to confed-external peer > confed-internal peer", | |
1119 | pfx_buf, new_buf, exist_buf); | |
1120 | if (!CHECK_FLAG(bgp->flags, | |
1121 | BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)) | |
1122 | return 1; | |
1123 | peer_sort_ret = 1; | |
1124 | } | |
1125 | ||
1126 | if (exist_sort == BGP_PEER_CONFED | |
1127 | && new_sort == BGP_PEER_IBGP) { | |
1128 | *reason = bgp_path_selection_confed; | |
1129 | if (debug) | |
1130 | zlog_debug( | |
1131 | "%s: %s loses to %s due to confed-internal peer < confed-external peer", | |
1132 | pfx_buf, new_buf, exist_buf); | |
1133 | if (!CHECK_FLAG(bgp->flags, | |
1134 | BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)) | |
1135 | return 0; | |
1136 | peer_sort_ret = 0; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | /* 11. Maximum path check. */ | |
1141 | if (newm == existm) { | |
1142 | /* If one path has a label but the other does not, do not treat | |
1143 | * them as equals for multipath | |
1144 | */ | |
1145 | if ((new->extra &&bgp_is_valid_label(&new->extra->label[0])) | |
1146 | != (exist->extra | |
1147 | && bgp_is_valid_label(&exist->extra->label[0]))) { | |
1148 | if (debug) | |
1149 | zlog_debug( | |
1150 | "%s: %s and %s cannot be multipath, one has a label while the other does not", | |
1151 | pfx_buf, new_buf, exist_buf); | |
1152 | } else if (CHECK_FLAG(bgp->flags, | |
1153 | BGP_FLAG_ASPATH_MULTIPATH_RELAX)) { | |
1154 | ||
1155 | /* | |
1156 | * For the two paths, all comparison steps till IGP | |
1157 | * metric | |
1158 | * have succeeded - including AS_PATH hop count. Since | |
1159 | * 'bgp | |
1160 | * bestpath as-path multipath-relax' knob is on, we | |
1161 | * don't need | |
1162 | * an exact match of AS_PATH. Thus, mark the paths are | |
1163 | * equal. | |
1164 | * That will trigger both these paths to get into the | |
1165 | * multipath | |
1166 | * array. | |
1167 | */ | |
1168 | *paths_eq = 1; | |
1169 | ||
1170 | if (debug) | |
1171 | zlog_debug( | |
1172 | "%s: %s and %s are equal via multipath-relax", | |
1173 | pfx_buf, new_buf, exist_buf); | |
1174 | } else if (new->peer->sort == BGP_PEER_IBGP) { | |
1175 | if (aspath_cmp(new->attr->aspath, | |
1176 | exist->attr->aspath)) { | |
1177 | *paths_eq = 1; | |
1178 | ||
1179 | if (debug) | |
1180 | zlog_debug( | |
1181 | "%s: %s and %s are equal via matching aspaths", | |
1182 | pfx_buf, new_buf, exist_buf); | |
1183 | } | |
1184 | } else if (new->peer->as == exist->peer->as) { | |
1185 | *paths_eq = 1; | |
1186 | ||
1187 | if (debug) | |
1188 | zlog_debug( | |
1189 | "%s: %s and %s are equal via same remote-as", | |
1190 | pfx_buf, new_buf, exist_buf); | |
1191 | } | |
1192 | } else { | |
1193 | /* | |
1194 | * TODO: If unequal cost ibgp multipath is enabled we can | |
1195 | * mark the paths as equal here instead of returning | |
1196 | */ | |
1197 | ||
1198 | /* Prior to the addition of BGP_FLAG_PEERTYPE_MULTIPATH_RELAX, | |
1199 | * if either step 7 or 10 (peer type checks) yielded a winner, | |
1200 | * that result was returned immediately. Returning from step 10 | |
1201 | * ignored the return value computed in steps 8 and 9 (IGP | |
1202 | * metric checks). In order to preserve that behavior, if | |
1203 | * peer_sort_ret is set, return that rather than igp_metric_ret. | |
1204 | */ | |
1205 | ret = peer_sort_ret; | |
1206 | if (peer_sort_ret < 0) { | |
1207 | ret = igp_metric_ret; | |
1208 | if (debug) { | |
1209 | if (ret == 1) | |
1210 | zlog_debug( | |
1211 | "%s: %s wins over %s after IGP metric comparison", | |
1212 | pfx_buf, new_buf, exist_buf); | |
1213 | else | |
1214 | zlog_debug( | |
1215 | "%s: %s loses to %s after IGP metric comparison", | |
1216 | pfx_buf, new_buf, exist_buf); | |
1217 | } | |
1218 | *reason = bgp_path_selection_igp_metric; | |
1219 | } | |
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * At this point, the decision whether to set *paths_eq = 1 has been | |
1225 | * completed. If we deferred returning because of bestpath peer-type | |
1226 | * relax configuration, return now. | |
1227 | */ | |
1228 | if (peer_sort_ret >= 0) | |
1229 | return peer_sort_ret; | |
1230 | ||
1231 | /* 12. If both paths are external, prefer the path that was received | |
1232 | first (the oldest one). This step minimizes route-flap, since a | |
1233 | newer path won't displace an older one, even if it was the | |
1234 | preferred route based on the additional decision criteria below. */ | |
1235 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_COMPARE_ROUTER_ID) | |
1236 | && new_sort == BGP_PEER_EBGP && exist_sort == BGP_PEER_EBGP) { | |
1237 | if (CHECK_FLAG(new->flags, BGP_PATH_SELECTED)) { | |
1238 | *reason = bgp_path_selection_older; | |
1239 | if (debug) | |
1240 | zlog_debug( | |
1241 | "%s: %s wins over %s due to oldest external", | |
1242 | pfx_buf, new_buf, exist_buf); | |
1243 | return 1; | |
1244 | } | |
1245 | ||
1246 | if (CHECK_FLAG(exist->flags, BGP_PATH_SELECTED)) { | |
1247 | *reason = bgp_path_selection_older; | |
1248 | if (debug) | |
1249 | zlog_debug( | |
1250 | "%s: %s loses to %s due to oldest external", | |
1251 | pfx_buf, new_buf, exist_buf); | |
1252 | return 0; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | /* 13. Router-ID comparision. */ | |
1257 | /* If one of the paths is "stale", the corresponding peer router-id will | |
1258 | * be 0 and would always win over the other path. If originator id is | |
1259 | * used for the comparision, it will decide which path is better. | |
1260 | */ | |
1261 | if (newattr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)) | |
1262 | new_id.s_addr = newattr->originator_id.s_addr; | |
1263 | else | |
1264 | new_id.s_addr = new->peer->remote_id.s_addr; | |
1265 | if (existattr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)) | |
1266 | exist_id.s_addr = existattr->originator_id.s_addr; | |
1267 | else | |
1268 | exist_id.s_addr = exist->peer->remote_id.s_addr; | |
1269 | ||
1270 | if (ntohl(new_id.s_addr) < ntohl(exist_id.s_addr)) { | |
1271 | *reason = bgp_path_selection_router_id; | |
1272 | if (debug) | |
1273 | zlog_debug( | |
1274 | "%s: %s wins over %s due to Router-ID comparison", | |
1275 | pfx_buf, new_buf, exist_buf); | |
1276 | return 1; | |
1277 | } | |
1278 | ||
1279 | if (ntohl(new_id.s_addr) > ntohl(exist_id.s_addr)) { | |
1280 | *reason = bgp_path_selection_router_id; | |
1281 | if (debug) | |
1282 | zlog_debug( | |
1283 | "%s: %s loses to %s due to Router-ID comparison", | |
1284 | pfx_buf, new_buf, exist_buf); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | /* 14. Cluster length comparision. */ | |
1289 | new_cluster = BGP_CLUSTER_LIST_LENGTH(new->attr); | |
1290 | exist_cluster = BGP_CLUSTER_LIST_LENGTH(exist->attr); | |
1291 | ||
1292 | if (new_cluster < exist_cluster) { | |
1293 | *reason = bgp_path_selection_cluster_length; | |
1294 | if (debug) | |
1295 | zlog_debug( | |
1296 | "%s: %s wins over %s due to CLUSTER_LIST length %d < %d", | |
1297 | pfx_buf, new_buf, exist_buf, new_cluster, | |
1298 | exist_cluster); | |
1299 | return 1; | |
1300 | } | |
1301 | ||
1302 | if (new_cluster > exist_cluster) { | |
1303 | *reason = bgp_path_selection_cluster_length; | |
1304 | if (debug) | |
1305 | zlog_debug( | |
1306 | "%s: %s loses to %s due to CLUSTER_LIST length %d > %d", | |
1307 | pfx_buf, new_buf, exist_buf, new_cluster, | |
1308 | exist_cluster); | |
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | /* 15. Neighbor address comparision. */ | |
1313 | /* Do this only if neither path is "stale" as stale paths do not have | |
1314 | * valid peer information (as the connection may or may not be up). | |
1315 | */ | |
1316 | if (CHECK_FLAG(exist->flags, BGP_PATH_STALE)) { | |
1317 | *reason = bgp_path_selection_stale; | |
1318 | if (debug) | |
1319 | zlog_debug( | |
1320 | "%s: %s wins over %s due to latter path being STALE", | |
1321 | pfx_buf, new_buf, exist_buf); | |
1322 | return 1; | |
1323 | } | |
1324 | ||
1325 | if (CHECK_FLAG(new->flags, BGP_PATH_STALE)) { | |
1326 | *reason = bgp_path_selection_stale; | |
1327 | if (debug) | |
1328 | zlog_debug( | |
1329 | "%s: %s loses to %s due to former path being STALE", | |
1330 | pfx_buf, new_buf, exist_buf); | |
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | /* locally configured routes to advertise do not have su_remote */ | |
1335 | if (new->peer->su_remote == NULL) { | |
1336 | *reason = bgp_path_selection_local_configured; | |
1337 | return 0; | |
1338 | } | |
1339 | if (exist->peer->su_remote == NULL) { | |
1340 | *reason = bgp_path_selection_local_configured; | |
1341 | return 1; | |
1342 | } | |
1343 | ||
1344 | ret = sockunion_cmp(new->peer->su_remote, exist->peer->su_remote); | |
1345 | ||
1346 | if (ret == 1) { | |
1347 | *reason = bgp_path_selection_neighbor_ip; | |
1348 | if (debug) | |
1349 | zlog_debug( | |
1350 | "%s: %s loses to %s due to Neighor IP comparison", | |
1351 | pfx_buf, new_buf, exist_buf); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | if (ret == -1) { | |
1356 | *reason = bgp_path_selection_neighbor_ip; | |
1357 | if (debug) | |
1358 | zlog_debug( | |
1359 | "%s: %s wins over %s due to Neighor IP comparison", | |
1360 | pfx_buf, new_buf, exist_buf); | |
1361 | return 1; | |
1362 | } | |
1363 | ||
1364 | *reason = bgp_path_selection_default; | |
1365 | if (debug) | |
1366 | zlog_debug("%s: %s wins over %s due to nothing left to compare", | |
1367 | pfx_buf, new_buf, exist_buf); | |
1368 | ||
1369 | return 1; | |
1370 | } | |
1371 | ||
1372 | ||
1373 | int bgp_evpn_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new, | |
1374 | struct bgp_path_info *exist, int *paths_eq) | |
1375 | { | |
1376 | enum bgp_path_selection_reason reason; | |
1377 | char pfx_buf[PREFIX2STR_BUFFER]; | |
1378 | ||
1379 | return bgp_path_info_cmp(bgp, new, exist, paths_eq, NULL, 0, pfx_buf, | |
1380 | AFI_L2VPN, SAFI_EVPN, &reason); | |
1381 | } | |
1382 | ||
1383 | /* Compare two bgp route entity. Return -1 if new is preferred, 1 if exist | |
1384 | * is preferred, or 0 if they are the same (usually will only occur if | |
1385 | * multipath is enabled | |
1386 | * This version is compatible with */ | |
1387 | int bgp_path_info_cmp_compatible(struct bgp *bgp, struct bgp_path_info *new, | |
1388 | struct bgp_path_info *exist, char *pfx_buf, | |
1389 | afi_t afi, safi_t safi, | |
1390 | enum bgp_path_selection_reason *reason) | |
1391 | { | |
1392 | int paths_eq; | |
1393 | int ret; | |
1394 | ret = bgp_path_info_cmp(bgp, new, exist, &paths_eq, NULL, 0, pfx_buf, | |
1395 | afi, safi, reason); | |
1396 | ||
1397 | if (paths_eq) | |
1398 | ret = 0; | |
1399 | else { | |
1400 | if (ret == 1) | |
1401 | ret = -1; | |
1402 | else | |
1403 | ret = 1; | |
1404 | } | |
1405 | return ret; | |
1406 | } | |
1407 | ||
1408 | static enum filter_type bgp_input_filter(struct peer *peer, | |
1409 | const struct prefix *p, | |
1410 | struct attr *attr, afi_t afi, | |
1411 | safi_t safi) | |
1412 | { | |
1413 | struct bgp_filter *filter; | |
1414 | enum filter_type ret = FILTER_PERMIT; | |
1415 | ||
1416 | filter = &peer->filter[afi][safi]; | |
1417 | ||
1418 | #define FILTER_EXIST_WARN(F, f, filter) \ | |
1419 | if (BGP_DEBUG(update, UPDATE_IN) && !(F##_IN(filter))) \ | |
1420 | zlog_debug("%s: Could not find configured input %s-list %s!", \ | |
1421 | peer->host, #f, F##_IN_NAME(filter)); | |
1422 | ||
1423 | if (DISTRIBUTE_IN_NAME(filter)) { | |
1424 | FILTER_EXIST_WARN(DISTRIBUTE, distribute, filter); | |
1425 | ||
1426 | if (access_list_apply(DISTRIBUTE_IN(filter), p) | |
1427 | == FILTER_DENY) { | |
1428 | ret = FILTER_DENY; | |
1429 | goto done; | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | if (PREFIX_LIST_IN_NAME(filter)) { | |
1434 | FILTER_EXIST_WARN(PREFIX_LIST, prefix, filter); | |
1435 | ||
1436 | if (prefix_list_apply(PREFIX_LIST_IN(filter), p) | |
1437 | == PREFIX_DENY) { | |
1438 | ret = FILTER_DENY; | |
1439 | goto done; | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | if (FILTER_LIST_IN_NAME(filter)) { | |
1444 | FILTER_EXIST_WARN(FILTER_LIST, as, filter); | |
1445 | ||
1446 | if (as_list_apply(FILTER_LIST_IN(filter), attr->aspath) | |
1447 | == AS_FILTER_DENY) { | |
1448 | ret = FILTER_DENY; | |
1449 | goto done; | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | done: | |
1454 | if (frrtrace_enabled(frr_bgp, input_filter)) { | |
1455 | char pfxprint[PREFIX2STR_BUFFER]; | |
1456 | ||
1457 | prefix2str(p, pfxprint, sizeof(pfxprint)); | |
1458 | frrtrace(5, frr_bgp, input_filter, peer, pfxprint, afi, safi, | |
1459 | ret == FILTER_PERMIT ? "permit" : "deny"); | |
1460 | } | |
1461 | ||
1462 | return ret; | |
1463 | #undef FILTER_EXIST_WARN | |
1464 | } | |
1465 | ||
1466 | static enum filter_type bgp_output_filter(struct peer *peer, | |
1467 | const struct prefix *p, | |
1468 | struct attr *attr, afi_t afi, | |
1469 | safi_t safi) | |
1470 | { | |
1471 | struct bgp_filter *filter; | |
1472 | enum filter_type ret = FILTER_PERMIT; | |
1473 | ||
1474 | filter = &peer->filter[afi][safi]; | |
1475 | ||
1476 | #define FILTER_EXIST_WARN(F, f, filter) \ | |
1477 | if (BGP_DEBUG(update, UPDATE_OUT) && !(F##_OUT(filter))) \ | |
1478 | zlog_debug("%s: Could not find configured output %s-list %s!", \ | |
1479 | peer->host, #f, F##_OUT_NAME(filter)); | |
1480 | ||
1481 | if (DISTRIBUTE_OUT_NAME(filter)) { | |
1482 | FILTER_EXIST_WARN(DISTRIBUTE, distribute, filter); | |
1483 | ||
1484 | if (access_list_apply(DISTRIBUTE_OUT(filter), p) | |
1485 | == FILTER_DENY) { | |
1486 | ret = FILTER_DENY; | |
1487 | goto done; | |
1488 | } | |
1489 | } | |
1490 | ||
1491 | if (PREFIX_LIST_OUT_NAME(filter)) { | |
1492 | FILTER_EXIST_WARN(PREFIX_LIST, prefix, filter); | |
1493 | ||
1494 | if (prefix_list_apply(PREFIX_LIST_OUT(filter), p) | |
1495 | == PREFIX_DENY) { | |
1496 | ret = FILTER_DENY; | |
1497 | goto done; | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | if (FILTER_LIST_OUT_NAME(filter)) { | |
1502 | FILTER_EXIST_WARN(FILTER_LIST, as, filter); | |
1503 | ||
1504 | if (as_list_apply(FILTER_LIST_OUT(filter), attr->aspath) | |
1505 | == AS_FILTER_DENY) { | |
1506 | ret = FILTER_DENY; | |
1507 | goto done; | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | if (frrtrace_enabled(frr_bgp, output_filter)) { | |
1512 | char pfxprint[PREFIX2STR_BUFFER]; | |
1513 | ||
1514 | prefix2str(p, pfxprint, sizeof(pfxprint)); | |
1515 | frrtrace(5, frr_bgp, output_filter, peer, pfxprint, afi, safi, | |
1516 | ret == FILTER_PERMIT ? "permit" : "deny"); | |
1517 | } | |
1518 | ||
1519 | done: | |
1520 | return ret; | |
1521 | #undef FILTER_EXIST_WARN | |
1522 | } | |
1523 | ||
1524 | /* If community attribute includes no_export then return 1. */ | |
1525 | static bool bgp_community_filter(struct peer *peer, struct attr *attr) | |
1526 | { | |
1527 | if (bgp_attr_get_community(attr)) { | |
1528 | /* NO_ADVERTISE check. */ | |
1529 | if (community_include(bgp_attr_get_community(attr), | |
1530 | COMMUNITY_NO_ADVERTISE)) | |
1531 | return true; | |
1532 | ||
1533 | /* NO_EXPORT check. */ | |
1534 | if (peer->sort == BGP_PEER_EBGP && | |
1535 | community_include(bgp_attr_get_community(attr), | |
1536 | COMMUNITY_NO_EXPORT)) | |
1537 | return true; | |
1538 | ||
1539 | /* NO_EXPORT_SUBCONFED check. */ | |
1540 | if (peer->sort == BGP_PEER_EBGP | |
1541 | || peer->sort == BGP_PEER_CONFED) | |
1542 | if (community_include(bgp_attr_get_community(attr), | |
1543 | COMMUNITY_NO_EXPORT_SUBCONFED)) | |
1544 | return true; | |
1545 | } | |
1546 | return false; | |
1547 | } | |
1548 | ||
1549 | /* Route reflection loop check. */ | |
1550 | static bool bgp_cluster_filter(struct peer *peer, struct attr *attr) | |
1551 | { | |
1552 | struct in_addr cluster_id; | |
1553 | struct cluster_list *cluster = bgp_attr_get_cluster(attr); | |
1554 | ||
1555 | if (cluster) { | |
1556 | if (peer->bgp->config & BGP_CONFIG_CLUSTER_ID) | |
1557 | cluster_id = peer->bgp->cluster_id; | |
1558 | else | |
1559 | cluster_id = peer->bgp->router_id; | |
1560 | ||
1561 | if (cluster_loop_check(cluster, cluster_id)) | |
1562 | return true; | |
1563 | } | |
1564 | return false; | |
1565 | } | |
1566 | ||
1567 | static int bgp_input_modifier(struct peer *peer, const struct prefix *p, | |
1568 | struct attr *attr, afi_t afi, safi_t safi, | |
1569 | const char *rmap_name, mpls_label_t *label, | |
1570 | uint32_t num_labels, struct bgp_dest *dest) | |
1571 | { | |
1572 | struct bgp_filter *filter; | |
1573 | struct bgp_path_info rmap_path = { 0 }; | |
1574 | struct bgp_path_info_extra extra = { 0 }; | |
1575 | route_map_result_t ret; | |
1576 | struct route_map *rmap = NULL; | |
1577 | ||
1578 | filter = &peer->filter[afi][safi]; | |
1579 | ||
1580 | /* Apply default weight value. */ | |
1581 | if (peer->weight[afi][safi]) | |
1582 | attr->weight = peer->weight[afi][safi]; | |
1583 | ||
1584 | if (rmap_name) { | |
1585 | rmap = route_map_lookup_by_name(rmap_name); | |
1586 | ||
1587 | if (rmap == NULL) | |
1588 | return RMAP_DENY; | |
1589 | } else { | |
1590 | if (ROUTE_MAP_IN_NAME(filter)) { | |
1591 | rmap = ROUTE_MAP_IN(filter); | |
1592 | ||
1593 | if (rmap == NULL) | |
1594 | return RMAP_DENY; | |
1595 | } | |
1596 | } | |
1597 | ||
1598 | /* Route map apply. */ | |
1599 | if (rmap) { | |
1600 | memset(&rmap_path, 0, sizeof(struct bgp_path_info)); | |
1601 | /* Duplicate current value to new strucutre for modification. */ | |
1602 | rmap_path.peer = peer; | |
1603 | rmap_path.attr = attr; | |
1604 | rmap_path.extra = &extra; | |
1605 | rmap_path.net = dest; | |
1606 | ||
1607 | extra.num_labels = num_labels; | |
1608 | if (label && num_labels && num_labels <= BGP_MAX_LABELS) | |
1609 | memcpy(extra.label, label, | |
1610 | num_labels * sizeof(mpls_label_t)); | |
1611 | ||
1612 | SET_FLAG(peer->rmap_type, PEER_RMAP_TYPE_IN); | |
1613 | ||
1614 | /* Apply BGP route map to the attribute. */ | |
1615 | ret = route_map_apply(rmap, p, &rmap_path); | |
1616 | ||
1617 | peer->rmap_type = 0; | |
1618 | ||
1619 | if (ret == RMAP_DENYMATCH) | |
1620 | return RMAP_DENY; | |
1621 | } | |
1622 | return RMAP_PERMIT; | |
1623 | } | |
1624 | ||
1625 | static int bgp_output_modifier(struct peer *peer, const struct prefix *p, | |
1626 | struct attr *attr, afi_t afi, safi_t safi, | |
1627 | const char *rmap_name) | |
1628 | { | |
1629 | struct bgp_path_info rmap_path; | |
1630 | route_map_result_t ret; | |
1631 | struct route_map *rmap = NULL; | |
1632 | uint8_t rmap_type; | |
1633 | ||
1634 | /* | |
1635 | * So if we get to this point and have no rmap_name | |
1636 | * we want to just show the output as it currently | |
1637 | * exists. | |
1638 | */ | |
1639 | if (!rmap_name) | |
1640 | return RMAP_PERMIT; | |
1641 | ||
1642 | /* Apply default weight value. */ | |
1643 | if (peer->weight[afi][safi]) | |
1644 | attr->weight = peer->weight[afi][safi]; | |
1645 | ||
1646 | rmap = route_map_lookup_by_name(rmap_name); | |
1647 | ||
1648 | /* | |
1649 | * If we have a route map name and we do not find | |
1650 | * the routemap that means we have an implicit | |
1651 | * deny. | |
1652 | */ | |
1653 | if (rmap == NULL) | |
1654 | return RMAP_DENY; | |
1655 | ||
1656 | memset(&rmap_path, 0, sizeof(struct bgp_path_info)); | |
1657 | /* Route map apply. */ | |
1658 | /* Duplicate current value to new strucutre for modification. */ | |
1659 | rmap_path.peer = peer; | |
1660 | rmap_path.attr = attr; | |
1661 | ||
1662 | rmap_type = peer->rmap_type; | |
1663 | SET_FLAG(peer->rmap_type, PEER_RMAP_TYPE_OUT); | |
1664 | ||
1665 | /* Apply BGP route map to the attribute. */ | |
1666 | ret = route_map_apply(rmap, p, &rmap_path); | |
1667 | ||
1668 | peer->rmap_type = rmap_type; | |
1669 | ||
1670 | if (ret == RMAP_DENYMATCH) | |
1671 | /* | |
1672 | * caller has multiple error paths with bgp_attr_flush() | |
1673 | */ | |
1674 | return RMAP_DENY; | |
1675 | ||
1676 | return RMAP_PERMIT; | |
1677 | } | |
1678 | ||
1679 | /* If this is an EBGP peer with remove-private-AS */ | |
1680 | static void bgp_peer_remove_private_as(struct bgp *bgp, afi_t afi, safi_t safi, | |
1681 | struct peer *peer, struct attr *attr) | |
1682 | { | |
1683 | if (peer->sort == BGP_PEER_EBGP | |
1684 | && (peer_af_flag_check(peer, afi, safi, | |
1685 | PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE) | |
1686 | || peer_af_flag_check(peer, afi, safi, | |
1687 | PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE) | |
1688 | || peer_af_flag_check(peer, afi, safi, | |
1689 | PEER_FLAG_REMOVE_PRIVATE_AS_ALL) | |
1690 | || peer_af_flag_check(peer, afi, safi, | |
1691 | PEER_FLAG_REMOVE_PRIVATE_AS))) { | |
1692 | // Take action on the entire aspath | |
1693 | if (peer_af_flag_check(peer, afi, safi, | |
1694 | PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE) | |
1695 | || peer_af_flag_check(peer, afi, safi, | |
1696 | PEER_FLAG_REMOVE_PRIVATE_AS_ALL)) { | |
1697 | if (peer_af_flag_check( | |
1698 | peer, afi, safi, | |
1699 | PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE)) | |
1700 | attr->aspath = aspath_replace_private_asns( | |
1701 | attr->aspath, bgp->as, peer->as); | |
1702 | ||
1703 | /* | |
1704 | * Even if the aspath consists of just private ASNs we | |
1705 | * need to walk the AS-Path to maintain all instances | |
1706 | * of the peer's ASN to break possible loops. | |
1707 | */ | |
1708 | else | |
1709 | attr->aspath = aspath_remove_private_asns( | |
1710 | attr->aspath, peer->as); | |
1711 | } | |
1712 | ||
1713 | // 'all' was not specified so the entire aspath must be private | |
1714 | // ASNs | |
1715 | // for us to do anything | |
1716 | else if (aspath_private_as_check(attr->aspath)) { | |
1717 | if (peer_af_flag_check( | |
1718 | peer, afi, safi, | |
1719 | PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE)) | |
1720 | attr->aspath = aspath_replace_private_asns( | |
1721 | attr->aspath, bgp->as, peer->as); | |
1722 | else | |
1723 | /* | |
1724 | * Walk the aspath to retain any instances of | |
1725 | * the peer_asn | |
1726 | */ | |
1727 | attr->aspath = aspath_remove_private_asns( | |
1728 | attr->aspath, peer->as); | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | /* If this is an EBGP peer with as-override */ | |
1734 | static void bgp_peer_as_override(struct bgp *bgp, afi_t afi, safi_t safi, | |
1735 | struct peer *peer, struct attr *attr) | |
1736 | { | |
1737 | if (peer->sort == BGP_PEER_EBGP | |
1738 | && peer_af_flag_check(peer, afi, safi, PEER_FLAG_AS_OVERRIDE)) { | |
1739 | if (aspath_single_asn_check(attr->aspath, peer->as)) | |
1740 | attr->aspath = aspath_replace_specific_asn( | |
1741 | attr->aspath, peer->as, bgp->as); | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | void bgp_attr_add_llgr_community(struct attr *attr) | |
1746 | { | |
1747 | struct community *old; | |
1748 | struct community *new; | |
1749 | struct community *merge; | |
1750 | struct community *llgr; | |
1751 | ||
1752 | old = bgp_attr_get_community(attr); | |
1753 | llgr = community_str2com("llgr-stale"); | |
1754 | ||
1755 | assert(llgr); | |
1756 | ||
1757 | if (old) { | |
1758 | merge = community_merge(community_dup(old), llgr); | |
1759 | ||
1760 | if (old->refcnt == 0) | |
1761 | community_free(&old); | |
1762 | ||
1763 | new = community_uniq_sort(merge); | |
1764 | community_free(&merge); | |
1765 | } else { | |
1766 | new = community_dup(llgr); | |
1767 | } | |
1768 | ||
1769 | community_free(&llgr); | |
1770 | ||
1771 | bgp_attr_set_community(attr, new); | |
1772 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES); | |
1773 | } | |
1774 | ||
1775 | void bgp_attr_add_gshut_community(struct attr *attr) | |
1776 | { | |
1777 | struct community *old; | |
1778 | struct community *new; | |
1779 | struct community *merge; | |
1780 | struct community *gshut; | |
1781 | ||
1782 | old = bgp_attr_get_community(attr); | |
1783 | gshut = community_str2com("graceful-shutdown"); | |
1784 | ||
1785 | assert(gshut); | |
1786 | ||
1787 | if (old) { | |
1788 | merge = community_merge(community_dup(old), gshut); | |
1789 | ||
1790 | if (old->refcnt == 0) | |
1791 | community_free(&old); | |
1792 | ||
1793 | new = community_uniq_sort(merge); | |
1794 | community_free(&merge); | |
1795 | } else { | |
1796 | new = community_dup(gshut); | |
1797 | } | |
1798 | ||
1799 | community_free(&gshut); | |
1800 | bgp_attr_set_community(attr, new); | |
1801 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES); | |
1802 | ||
1803 | /* When we add the graceful-shutdown community we must also | |
1804 | * lower the local-preference */ | |
1805 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
1806 | attr->local_pref = BGP_GSHUT_LOCAL_PREF; | |
1807 | } | |
1808 | ||
1809 | ||
1810 | /* Notify BGP Conditional advertisement scanner process. */ | |
1811 | void bgp_notify_conditional_adv_scanner(struct update_subgroup *subgrp) | |
1812 | { | |
1813 | struct peer *peer = SUBGRP_PEER(subgrp); | |
1814 | afi_t afi = SUBGRP_AFI(subgrp); | |
1815 | safi_t safi = SUBGRP_SAFI(subgrp); | |
1816 | struct bgp_filter *filter = &peer->filter[afi][safi]; | |
1817 | ||
1818 | if (!ADVERTISE_MAP_NAME(filter)) | |
1819 | return; | |
1820 | ||
1821 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE)) | |
1822 | return; | |
1823 | ||
1824 | peer->advmap_table_change = true; | |
1825 | } | |
1826 | ||
1827 | ||
1828 | void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr) | |
1829 | { | |
1830 | if (family == AF_INET) { | |
1831 | attr->nexthop.s_addr = INADDR_ANY; | |
1832 | attr->mp_nexthop_global_in.s_addr = INADDR_ANY; | |
1833 | } | |
1834 | if (family == AF_INET6) | |
1835 | memset(&attr->mp_nexthop_global, 0, IPV6_MAX_BYTELEN); | |
1836 | if (family == AF_EVPN) | |
1837 | memset(&attr->mp_nexthop_global_in, 0, BGP_ATTR_NHLEN_IPV4); | |
1838 | } | |
1839 | ||
1840 | bool subgroup_announce_check(struct bgp_dest *dest, struct bgp_path_info *pi, | |
1841 | struct update_subgroup *subgrp, | |
1842 | const struct prefix *p, struct attr *attr, | |
1843 | struct attr *post_attr) | |
1844 | { | |
1845 | struct bgp_filter *filter; | |
1846 | struct peer *from; | |
1847 | struct peer *peer; | |
1848 | struct peer *onlypeer; | |
1849 | struct bgp *bgp; | |
1850 | struct attr *piattr; | |
1851 | route_map_result_t ret; | |
1852 | int transparent; | |
1853 | int reflect; | |
1854 | afi_t afi; | |
1855 | safi_t safi; | |
1856 | int samepeer_safe = 0; /* for synthetic mplsvpns routes */ | |
1857 | bool nh_reset = false; | |
1858 | uint64_t cum_bw; | |
1859 | ||
1860 | if (DISABLE_BGP_ANNOUNCE) | |
1861 | return false; | |
1862 | ||
1863 | afi = SUBGRP_AFI(subgrp); | |
1864 | safi = SUBGRP_SAFI(subgrp); | |
1865 | peer = SUBGRP_PEER(subgrp); | |
1866 | onlypeer = NULL; | |
1867 | if (CHECK_FLAG(peer->flags, PEER_FLAG_LONESOUL)) | |
1868 | onlypeer = SUBGRP_PFIRST(subgrp)->peer; | |
1869 | ||
1870 | from = pi->peer; | |
1871 | filter = &peer->filter[afi][safi]; | |
1872 | bgp = SUBGRP_INST(subgrp); | |
1873 | piattr = bgp_path_info_mpath_count(pi) ? bgp_path_info_mpath_attr(pi) | |
1874 | : pi->attr; | |
1875 | ||
1876 | if (CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_MAX_PREFIX_OUT) && | |
1877 | peer->pmax_out[afi][safi] != 0 && | |
1878 | subgrp->pscount >= peer->pmax_out[afi][safi]) { | |
1879 | if (BGP_DEBUG(update, UPDATE_OUT) || | |
1880 | BGP_DEBUG(update, UPDATE_PREFIX)) { | |
1881 | zlog_debug("%s reached maximum prefix to be send (%u)", | |
1882 | peer->host, peer->pmax_out[afi][safi]); | |
1883 | } | |
1884 | return false; | |
1885 | } | |
1886 | ||
1887 | #ifdef ENABLE_BGP_VNC | |
1888 | if (((afi == AFI_IP) || (afi == AFI_IP6)) && (safi == SAFI_MPLS_VPN) | |
1889 | && ((pi->type == ZEBRA_ROUTE_BGP_DIRECT) | |
1890 | || (pi->type == ZEBRA_ROUTE_BGP_DIRECT_EXT))) { | |
1891 | ||
1892 | /* | |
1893 | * direct and direct_ext type routes originate internally even | |
1894 | * though they can have peer pointers that reference other | |
1895 | * systems | |
1896 | */ | |
1897 | zlog_debug("%s: pfx %pFX bgp_direct->vpn route peer safe", | |
1898 | __func__, p); | |
1899 | samepeer_safe = 1; | |
1900 | } | |
1901 | #endif | |
1902 | ||
1903 | if (((afi == AFI_IP) || (afi == AFI_IP6)) | |
1904 | && ((safi == SAFI_MPLS_VPN) || (safi == SAFI_UNICAST)) | |
1905 | && (pi->type == ZEBRA_ROUTE_BGP) | |
1906 | && (pi->sub_type == BGP_ROUTE_IMPORTED)) { | |
1907 | ||
1908 | /* Applies to routes leaked vpn->vrf and vrf->vpn */ | |
1909 | ||
1910 | samepeer_safe = 1; | |
1911 | } | |
1912 | ||
1913 | /* With addpath we may be asked to TX all kinds of paths so make sure | |
1914 | * pi is valid */ | |
1915 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1916 | || CHECK_FLAG(pi->flags, BGP_PATH_HISTORY) | |
1917 | || CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
1918 | return false; | |
1919 | } | |
1920 | ||
1921 | /* If this is not the bestpath then check to see if there is an enabled | |
1922 | * addpath | |
1923 | * feature that requires us to advertise it */ | |
1924 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1925 | if (!bgp_addpath_tx_path(peer->addpath_type[afi][safi], pi)) { | |
1926 | return false; | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | /* Aggregate-address suppress check. */ | |
1931 | if (bgp_path_suppressed(pi) && !UNSUPPRESS_MAP_NAME(filter)) | |
1932 | return false; | |
1933 | ||
1934 | /* | |
1935 | * If we are doing VRF 2 VRF leaking via the import | |
1936 | * statement, we want to prevent the route going | |
1937 | * off box as that the RT and RD created are localy | |
1938 | * significant and globaly useless. | |
1939 | */ | |
1940 | if (safi == SAFI_MPLS_VPN && pi->extra && pi->extra->num_labels | |
1941 | && pi->extra->label[0] == BGP_PREVENT_VRF_2_VRF_LEAK) | |
1942 | return false; | |
1943 | ||
1944 | /* If it's labeled safi, make sure the route has a valid label. */ | |
1945 | if (safi == SAFI_LABELED_UNICAST) { | |
1946 | mpls_label_t label = bgp_adv_label(dest, pi, peer, afi, safi); | |
1947 | if (!bgp_is_valid_label(&label)) { | |
1948 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
1949 | zlog_debug("u%" PRIu64 ":s%" PRIu64 | |
1950 | " %pFX is filtered - no label (%p)", | |
1951 | subgrp->update_group->id, subgrp->id, | |
1952 | p, &label); | |
1953 | return false; | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | /* Do not send back route to sender. */ | |
1958 | if (onlypeer && from == onlypeer) { | |
1959 | return false; | |
1960 | } | |
1961 | ||
1962 | /* Do not send the default route in the BGP table if the neighbor is | |
1963 | * configured for default-originate */ | |
1964 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
1965 | PEER_FLAG_DEFAULT_ORIGINATE)) { | |
1966 | if (p->family == AF_INET && p->u.prefix4.s_addr == INADDR_ANY) | |
1967 | return false; | |
1968 | else if (p->family == AF_INET6 && p->prefixlen == 0) | |
1969 | return false; | |
1970 | } | |
1971 | ||
1972 | /* Transparency check. */ | |
1973 | if (CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_RSERVER_CLIENT) | |
1974 | && CHECK_FLAG(from->af_flags[afi][safi], PEER_FLAG_RSERVER_CLIENT)) | |
1975 | transparent = 1; | |
1976 | else | |
1977 | transparent = 0; | |
1978 | ||
1979 | /* If community is not disabled check the no-export and local. */ | |
1980 | if (!transparent && bgp_community_filter(peer, piattr)) { | |
1981 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
1982 | zlog_debug("%s: community filter check fail for %pFX", | |
1983 | __func__, p); | |
1984 | return false; | |
1985 | } | |
1986 | ||
1987 | /* If the attribute has originator-id and it is same as remote | |
1988 | peer's id. */ | |
1989 | if (onlypeer && piattr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID) | |
1990 | && (IPV4_ADDR_SAME(&onlypeer->remote_id, &piattr->originator_id))) { | |
1991 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
1992 | zlog_debug( | |
1993 | "%s [Update:SEND] %pFX originator-id is same as remote router-id", | |
1994 | onlypeer->host, p); | |
1995 | return false; | |
1996 | } | |
1997 | ||
1998 | /* ORF prefix-list filter check */ | |
1999 | if (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_ADV) | |
2000 | && (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_RCV) | |
2001 | || CHECK_FLAG(peer->af_cap[afi][safi], | |
2002 | PEER_CAP_ORF_PREFIX_SM_OLD_RCV))) | |
2003 | if (peer->orf_plist[afi][safi]) { | |
2004 | if (prefix_list_apply(peer->orf_plist[afi][safi], p) | |
2005 | == PREFIX_DENY) { | |
2006 | if (bgp_debug_update(NULL, p, | |
2007 | subgrp->update_group, 0)) | |
2008 | zlog_debug( | |
2009 | "%s [Update:SEND] %pFX is filtered via ORF", | |
2010 | peer->host, p); | |
2011 | return false; | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | /* Output filter check. */ | |
2016 | if (bgp_output_filter(peer, p, piattr, afi, safi) == FILTER_DENY) { | |
2017 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
2018 | zlog_debug("%s [Update:SEND] %pFX is filtered", | |
2019 | peer->host, p); | |
2020 | return false; | |
2021 | } | |
2022 | ||
2023 | /* AS path loop check. */ | |
2024 | if (onlypeer && onlypeer->as_path_loop_detection | |
2025 | && aspath_loop_check(piattr->aspath, onlypeer->as)) { | |
2026 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
2027 | zlog_debug( | |
2028 | "%s [Update:SEND] suppress announcement to peer AS %u that is part of AS path.", | |
2029 | onlypeer->host, onlypeer->as); | |
2030 | return false; | |
2031 | } | |
2032 | ||
2033 | /* If we're a CONFED we need to loop check the CONFED ID too */ | |
2034 | if (CHECK_FLAG(bgp->config, BGP_CONFIG_CONFEDERATION)) { | |
2035 | if (aspath_loop_check(piattr->aspath, bgp->confed_id)) { | |
2036 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
2037 | zlog_debug( | |
2038 | "%s [Update:SEND] suppress announcement to peer AS %u is AS path.", | |
2039 | peer->host, bgp->confed_id); | |
2040 | return false; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | /* Route-Reflect check. */ | |
2045 | if (from->sort == BGP_PEER_IBGP && peer->sort == BGP_PEER_IBGP) | |
2046 | reflect = 1; | |
2047 | else | |
2048 | reflect = 0; | |
2049 | ||
2050 | /* IBGP reflection check. */ | |
2051 | if (reflect && !samepeer_safe) { | |
2052 | /* A route from a Client peer. */ | |
2053 | if (CHECK_FLAG(from->af_flags[afi][safi], | |
2054 | PEER_FLAG_REFLECTOR_CLIENT)) { | |
2055 | /* Reflect to all the Non-Client peers and also to the | |
2056 | Client peers other than the originator. Originator | |
2057 | check | |
2058 | is already done. So there is noting to do. */ | |
2059 | /* no bgp client-to-client reflection check. */ | |
2060 | if (CHECK_FLAG(bgp->flags, | |
2061 | BGP_FLAG_NO_CLIENT_TO_CLIENT)) | |
2062 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
2063 | PEER_FLAG_REFLECTOR_CLIENT)) | |
2064 | return false; | |
2065 | } else { | |
2066 | /* A route from a Non-client peer. Reflect to all other | |
2067 | clients. */ | |
2068 | if (!CHECK_FLAG(peer->af_flags[afi][safi], | |
2069 | PEER_FLAG_REFLECTOR_CLIENT)) | |
2070 | return false; | |
2071 | } | |
2072 | } | |
2073 | ||
2074 | /* For modify attribute, copy it to temporary structure. | |
2075 | * post_attr comes from BGP conditional advertisements, where | |
2076 | * attributes are already processed by advertise-map route-map, | |
2077 | * and this needs to be saved instead of overwriting from the | |
2078 | * path attributes. | |
2079 | */ | |
2080 | if (post_attr) | |
2081 | *attr = *post_attr; | |
2082 | else | |
2083 | *attr = *piattr; | |
2084 | ||
2085 | /* If local-preference is not set. */ | |
2086 | if ((peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED) | |
2087 | && (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)))) { | |
2088 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2089 | attr->local_pref = bgp->default_local_pref; | |
2090 | } | |
2091 | ||
2092 | /* If originator-id is not set and the route is to be reflected, | |
2093 | set the originator id */ | |
2094 | if (reflect | |
2095 | && (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)))) { | |
2096 | IPV4_ADDR_COPY(&(attr->originator_id), &(from->remote_id)); | |
2097 | SET_FLAG(attr->flag, BGP_ATTR_ORIGINATOR_ID); | |
2098 | } | |
2099 | ||
2100 | /* Remove MED if its an EBGP peer - will get overwritten by route-maps | |
2101 | */ | |
2102 | if (peer->sort == BGP_PEER_EBGP | |
2103 | && attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) { | |
2104 | if (from != bgp->peer_self && !transparent | |
2105 | && !CHECK_FLAG(peer->af_flags[afi][safi], | |
2106 | PEER_FLAG_MED_UNCHANGED)) | |
2107 | attr->flag &= | |
2108 | ~(ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)); | |
2109 | } | |
2110 | ||
2111 | /* Since the nexthop attribute can vary per peer, it is not explicitly | |
2112 | * set | |
2113 | * in announce check, only certain flags and length (or number of | |
2114 | * nexthops | |
2115 | * -- for IPv6/MP_REACH) are set here in order to guide the update | |
2116 | * formation | |
2117 | * code in setting the nexthop(s) on a per peer basis in | |
2118 | * reformat_peer(). | |
2119 | * Typically, the source nexthop in the attribute is preserved but in | |
2120 | * the | |
2121 | * scenarios where we know it will always be overwritten, we reset the | |
2122 | * nexthop to "0" in an attempt to achieve better Update packing. An | |
2123 | * example of this is when a prefix from each of 2 IBGP peers needs to | |
2124 | * be | |
2125 | * announced to an EBGP peer (and they have the same attributes barring | |
2126 | * their nexthop). | |
2127 | */ | |
2128 | if (reflect) | |
2129 | SET_FLAG(attr->rmap_change_flags, BATTR_REFLECTED); | |
2130 | ||
2131 | #define NEXTHOP_IS_V6 \ | |
2132 | ((safi != SAFI_ENCAP && safi != SAFI_MPLS_VPN \ | |
2133 | && (p->family == AF_INET6 || peer_cap_enhe(peer, afi, safi))) \ | |
2134 | || ((safi == SAFI_ENCAP || safi == SAFI_MPLS_VPN) \ | |
2135 | && attr->mp_nexthop_len >= IPV6_MAX_BYTELEN)) | |
2136 | ||
2137 | /* IPv6/MP starts with 1 nexthop. The link-local address is passed only | |
2138 | * if | |
2139 | * the peer (group) is configured to receive link-local nexthop | |
2140 | * unchanged | |
2141 | * and it is available in the prefix OR we're not reflecting the route, | |
2142 | * link-local nexthop address is valid and | |
2143 | * the peer (group) to whom we're going to announce is on a shared | |
2144 | * network | |
2145 | * and this is either a self-originated route or the peer is EBGP. | |
2146 | * By checking if nexthop LL address is valid we are sure that | |
2147 | * we do not announce LL address as `::`. | |
2148 | */ | |
2149 | if (NEXTHOP_IS_V6) { | |
2150 | attr->mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL; | |
2151 | if ((CHECK_FLAG(peer->af_flags[afi][safi], | |
2152 | PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED) | |
2153 | && IN6_IS_ADDR_LINKLOCAL(&attr->mp_nexthop_local)) | |
2154 | || (!reflect && !transparent | |
2155 | && IN6_IS_ADDR_LINKLOCAL(&peer->nexthop.v6_local) | |
2156 | && peer->shared_network | |
2157 | && (from == bgp->peer_self | |
2158 | || peer->sort == BGP_PEER_EBGP))) { | |
2159 | attr->mp_nexthop_len = | |
2160 | BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL; | |
2161 | } | |
2162 | ||
2163 | /* Clear off link-local nexthop in source, whenever it is not | |
2164 | * needed to | |
2165 | * ensure more prefixes share the same attribute for | |
2166 | * announcement. | |
2167 | */ | |
2168 | if (!(CHECK_FLAG(peer->af_flags[afi][safi], | |
2169 | PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED))) | |
2170 | memset(&attr->mp_nexthop_local, 0, IPV6_MAX_BYTELEN); | |
2171 | } | |
2172 | ||
2173 | bgp_peer_remove_private_as(bgp, afi, safi, peer, attr); | |
2174 | bgp_peer_as_override(bgp, afi, safi, peer, attr); | |
2175 | ||
2176 | /* Route map & unsuppress-map apply. */ | |
2177 | if (!post_attr && | |
2178 | (ROUTE_MAP_OUT_NAME(filter) || bgp_path_suppressed(pi))) { | |
2179 | struct bgp_path_info rmap_path = {0}; | |
2180 | struct bgp_path_info_extra dummy_rmap_path_extra = {0}; | |
2181 | struct attr dummy_attr = {0}; | |
2182 | ||
2183 | /* Fill temp path_info */ | |
2184 | prep_for_rmap_apply(&rmap_path, &dummy_rmap_path_extra, dest, | |
2185 | pi, peer, attr); | |
2186 | ||
2187 | /* don't confuse inbound and outbound setting */ | |
2188 | RESET_FLAG(attr->rmap_change_flags); | |
2189 | ||
2190 | /* | |
2191 | * The route reflector is not allowed to modify the attributes | |
2192 | * of the reflected IBGP routes unless explicitly allowed. | |
2193 | */ | |
2194 | if ((from->sort == BGP_PEER_IBGP && peer->sort == BGP_PEER_IBGP) | |
2195 | && !CHECK_FLAG(bgp->flags, | |
2196 | BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY)) { | |
2197 | dummy_attr = *attr; | |
2198 | rmap_path.attr = &dummy_attr; | |
2199 | } | |
2200 | ||
2201 | SET_FLAG(peer->rmap_type, PEER_RMAP_TYPE_OUT); | |
2202 | ||
2203 | if (bgp_path_suppressed(pi)) | |
2204 | ret = route_map_apply(UNSUPPRESS_MAP(filter), p, | |
2205 | &rmap_path); | |
2206 | else | |
2207 | ret = route_map_apply(ROUTE_MAP_OUT(filter), p, | |
2208 | &rmap_path); | |
2209 | ||
2210 | peer->rmap_type = 0; | |
2211 | ||
2212 | if (ret == RMAP_DENYMATCH) { | |
2213 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
2214 | zlog_debug( | |
2215 | "%s [Update:SEND] %pFX is filtered by route-map '%s'", | |
2216 | peer->host, p, | |
2217 | ROUTE_MAP_OUT_NAME(filter)); | |
2218 | ||
2219 | bgp_attr_flush(&dummy_attr); | |
2220 | return false; | |
2221 | } | |
2222 | } | |
2223 | ||
2224 | /* RFC 8212 to prevent route leaks. | |
2225 | * This specification intends to improve this situation by requiring the | |
2226 | * explicit configuration of both BGP Import and Export Policies for any | |
2227 | * External BGP (EBGP) session such as customers, peers, or | |
2228 | * confederation boundaries for all enabled address families. Through | |
2229 | * codification of the aforementioned requirement, operators will | |
2230 | * benefit from consistent behavior across different BGP | |
2231 | * implementations. | |
2232 | */ | |
2233 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_EBGP_REQUIRES_POLICY)) | |
2234 | if (!bgp_outbound_policy_exists(peer, filter)) { | |
2235 | if (monotime_since(&bgp->ebgprequirespolicywarning, | |
2236 | NULL) > FIFTEENMINUTE2USEC || | |
2237 | bgp->ebgprequirespolicywarning.tv_sec == 0) { | |
2238 | zlog_warn( | |
2239 | "EBGP inbound/outbound policy not properly setup, please configure in order for your peering to work correctly"); | |
2240 | monotime(&bgp->ebgprequirespolicywarning); | |
2241 | } | |
2242 | return false; | |
2243 | } | |
2244 | ||
2245 | /* draft-ietf-idr-deprecate-as-set-confed-set | |
2246 | * Filter routes having AS_SET or AS_CONFED_SET in the path. | |
2247 | * Eventually, This document (if approved) updates RFC 4271 | |
2248 | * and RFC 5065 by eliminating AS_SET and AS_CONFED_SET types, | |
2249 | * and obsoletes RFC 6472. | |
2250 | */ | |
2251 | if (peer->bgp->reject_as_sets) | |
2252 | if (aspath_check_as_sets(attr->aspath)) | |
2253 | return false; | |
2254 | ||
2255 | /* Codification of AS 0 Processing */ | |
2256 | if (aspath_check_as_zero(attr->aspath)) | |
2257 | return false; | |
2258 | ||
2259 | if (bgp_in_graceful_shutdown(bgp)) { | |
2260 | if (peer->sort == BGP_PEER_IBGP | |
2261 | || peer->sort == BGP_PEER_CONFED) { | |
2262 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2263 | attr->local_pref = BGP_GSHUT_LOCAL_PREF; | |
2264 | } else { | |
2265 | bgp_attr_add_gshut_community(attr); | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | /* A BGP speaker that has advertised the "Long-lived Graceful Restart | |
2270 | * Capability" to a neighbor MUST perform the following upon receiving | |
2271 | * a route from that neighbor with the "LLGR_STALE" community, or upon | |
2272 | * attaching the "LLGR_STALE" community itself per Section 4.2: | |
2273 | * | |
2274 | * The route SHOULD NOT be advertised to any neighbor from which the | |
2275 | * Long-lived Graceful Restart Capability has not been received. | |
2276 | */ | |
2277 | if (bgp_attr_get_community(attr) && | |
2278 | community_include(bgp_attr_get_community(attr), | |
2279 | COMMUNITY_LLGR_STALE) && | |
2280 | !CHECK_FLAG(peer->cap, PEER_CAP_LLGR_RCV) && | |
2281 | !CHECK_FLAG(peer->cap, PEER_CAP_LLGR_ADV)) | |
2282 | return false; | |
2283 | ||
2284 | /* After route-map has been applied, we check to see if the nexthop to | |
2285 | * be carried in the attribute (that is used for the announcement) can | |
2286 | * be cleared off or not. We do this in all cases where we would be | |
2287 | * setting the nexthop to "ourselves". For IPv6, we only need to | |
2288 | * consider | |
2289 | * the global nexthop here; the link-local nexthop would have been | |
2290 | * cleared | |
2291 | * already, and if not, it is required by the update formation code. | |
2292 | * Also see earlier comments in this function. | |
2293 | */ | |
2294 | /* | |
2295 | * If route-map has performed some operation on the nexthop or the peer | |
2296 | * configuration says to pass it unchanged, we cannot reset the nexthop | |
2297 | * here, so only attempt to do it if these aren't true. Note that the | |
2298 | * route-map handler itself might have cleared the nexthop, if for | |
2299 | * example, | |
2300 | * it is configured as 'peer-address'. | |
2301 | */ | |
2302 | if (!bgp_rmap_nhop_changed(attr->rmap_change_flags, | |
2303 | piattr->rmap_change_flags) | |
2304 | && !transparent | |
2305 | && !CHECK_FLAG(peer->af_flags[afi][safi], | |
2306 | PEER_FLAG_NEXTHOP_UNCHANGED)) { | |
2307 | /* We can reset the nexthop, if setting (or forcing) it to | |
2308 | * 'self' */ | |
2309 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
2310 | PEER_FLAG_NEXTHOP_SELF) | |
2311 | || CHECK_FLAG(peer->af_flags[afi][safi], | |
2312 | PEER_FLAG_FORCE_NEXTHOP_SELF)) { | |
2313 | if (!reflect | |
2314 | || CHECK_FLAG(peer->af_flags[afi][safi], | |
2315 | PEER_FLAG_FORCE_NEXTHOP_SELF)) { | |
2316 | subgroup_announce_reset_nhop( | |
2317 | (peer_cap_enhe(peer, afi, safi) | |
2318 | ? AF_INET6 | |
2319 | : p->family), | |
2320 | attr); | |
2321 | nh_reset = true; | |
2322 | } | |
2323 | } else if (peer->sort == BGP_PEER_EBGP) { | |
2324 | /* Can also reset the nexthop if announcing to EBGP, but | |
2325 | * only if | |
2326 | * no peer in the subgroup is on a shared subnet. | |
2327 | * Note: 3rd party nexthop currently implemented for | |
2328 | * IPv4 only. | |
2329 | */ | |
2330 | if ((p->family == AF_INET) && | |
2331 | (!bgp_subgrp_multiaccess_check_v4( | |
2332 | piattr->nexthop, | |
2333 | subgrp, from))) { | |
2334 | subgroup_announce_reset_nhop( | |
2335 | (peer_cap_enhe(peer, afi, safi) | |
2336 | ? AF_INET6 | |
2337 | : p->family), | |
2338 | attr); | |
2339 | nh_reset = true; | |
2340 | } | |
2341 | ||
2342 | if ((p->family == AF_INET6) && | |
2343 | (!bgp_subgrp_multiaccess_check_v6( | |
2344 | piattr->mp_nexthop_global, | |
2345 | subgrp, from))) { | |
2346 | subgroup_announce_reset_nhop( | |
2347 | (peer_cap_enhe(peer, afi, safi) | |
2348 | ? AF_INET6 | |
2349 | : p->family), | |
2350 | attr); | |
2351 | nh_reset = true; | |
2352 | } | |
2353 | ||
2354 | ||
2355 | ||
2356 | } else if (CHECK_FLAG(pi->flags, BGP_PATH_ANNC_NH_SELF)) { | |
2357 | /* | |
2358 | * This flag is used for leaked vpn-vrf routes | |
2359 | */ | |
2360 | int family = p->family; | |
2361 | ||
2362 | if (peer_cap_enhe(peer, afi, safi)) | |
2363 | family = AF_INET6; | |
2364 | ||
2365 | if (bgp_debug_update(NULL, p, subgrp->update_group, 0)) | |
2366 | zlog_debug( | |
2367 | "%s: BGP_PATH_ANNC_NH_SELF, family=%s", | |
2368 | __func__, family2str(family)); | |
2369 | subgroup_announce_reset_nhop(family, attr); | |
2370 | nh_reset = true; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* If IPv6/MP and nexthop does not have any override and happens | |
2375 | * to | |
2376 | * be a link-local address, reset it so that we don't pass along | |
2377 | * the | |
2378 | * source's link-local IPv6 address to recipients who may not be | |
2379 | * on | |
2380 | * the same interface. | |
2381 | */ | |
2382 | if (p->family == AF_INET6 || peer_cap_enhe(peer, afi, safi)) { | |
2383 | if (IN6_IS_ADDR_LINKLOCAL(&attr->mp_nexthop_global)) { | |
2384 | subgroup_announce_reset_nhop(AF_INET6, attr); | |
2385 | nh_reset = true; | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* | |
2390 | * When the next hop is set to ourselves, if all multipaths have | |
2391 | * link-bandwidth announce the cumulative bandwidth as that makes | |
2392 | * the most sense. However, don't modify if the link-bandwidth has | |
2393 | * been explicitly set by user policy. | |
2394 | */ | |
2395 | if (nh_reset && | |
2396 | bgp_path_info_mpath_chkwtd(bgp, pi) && | |
2397 | (cum_bw = bgp_path_info_mpath_cumbw(pi)) != 0 && | |
2398 | !CHECK_FLAG(attr->rmap_change_flags, BATTR_RMAP_LINK_BW_SET)) | |
2399 | bgp_attr_set_ecommunity( | |
2400 | attr, | |
2401 | ecommunity_replace_linkbw( | |
2402 | bgp->as, bgp_attr_get_ecommunity(attr), cum_bw, | |
2403 | CHECK_FLAG( | |
2404 | peer->flags, | |
2405 | PEER_FLAG_DISABLE_LINK_BW_ENCODING_IEEE))); | |
2406 | ||
2407 | return true; | |
2408 | } | |
2409 | ||
2410 | static void bgp_route_select_timer_expire(struct thread *thread) | |
2411 | { | |
2412 | struct afi_safi_info *info; | |
2413 | afi_t afi; | |
2414 | safi_t safi; | |
2415 | struct bgp *bgp; | |
2416 | ||
2417 | info = THREAD_ARG(thread); | |
2418 | afi = info->afi; | |
2419 | safi = info->safi; | |
2420 | bgp = info->bgp; | |
2421 | ||
2422 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
2423 | zlog_debug("afi %d, safi %d : route select timer expired", afi, | |
2424 | safi); | |
2425 | ||
2426 | bgp->gr_info[afi][safi].t_route_select = NULL; | |
2427 | ||
2428 | XFREE(MTYPE_TMP, info); | |
2429 | ||
2430 | /* Best path selection */ | |
2431 | bgp_best_path_select_defer(bgp, afi, safi); | |
2432 | } | |
2433 | ||
2434 | void bgp_best_selection(struct bgp *bgp, struct bgp_dest *dest, | |
2435 | struct bgp_maxpaths_cfg *mpath_cfg, | |
2436 | struct bgp_path_info_pair *result, afi_t afi, | |
2437 | safi_t safi) | |
2438 | { | |
2439 | struct bgp_path_info *new_select; | |
2440 | struct bgp_path_info *old_select; | |
2441 | struct bgp_path_info *pi; | |
2442 | struct bgp_path_info *pi1; | |
2443 | struct bgp_path_info *pi2; | |
2444 | struct bgp_path_info *nextpi = NULL; | |
2445 | int paths_eq, do_mpath, debug; | |
2446 | struct list mp_list; | |
2447 | char pfx_buf[PREFIX2STR_BUFFER]; | |
2448 | char path_buf[PATH_ADDPATH_STR_BUFFER]; | |
2449 | ||
2450 | bgp_mp_list_init(&mp_list); | |
2451 | do_mpath = | |
2452 | (mpath_cfg->maxpaths_ebgp > 1 || mpath_cfg->maxpaths_ibgp > 1); | |
2453 | ||
2454 | debug = bgp_debug_bestpath(dest); | |
2455 | ||
2456 | if (debug) | |
2457 | prefix2str(bgp_dest_get_prefix(dest), pfx_buf, sizeof(pfx_buf)); | |
2458 | ||
2459 | dest->reason = bgp_path_selection_none; | |
2460 | /* bgp deterministic-med */ | |
2461 | new_select = NULL; | |
2462 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DETERMINISTIC_MED)) { | |
2463 | ||
2464 | /* Clear BGP_PATH_DMED_SELECTED for all paths */ | |
2465 | for (pi1 = bgp_dest_get_bgp_path_info(dest); pi1; | |
2466 | pi1 = pi1->next) | |
2467 | bgp_path_info_unset_flag(dest, pi1, | |
2468 | BGP_PATH_DMED_SELECTED); | |
2469 | ||
2470 | for (pi1 = bgp_dest_get_bgp_path_info(dest); pi1; | |
2471 | pi1 = pi1->next) { | |
2472 | if (CHECK_FLAG(pi1->flags, BGP_PATH_DMED_CHECK)) | |
2473 | continue; | |
2474 | if (BGP_PATH_HOLDDOWN(pi1)) | |
2475 | continue; | |
2476 | if (pi1->peer != bgp->peer_self) | |
2477 | if (!peer_established(pi1->peer)) | |
2478 | continue; | |
2479 | ||
2480 | new_select = pi1; | |
2481 | if (pi1->next) { | |
2482 | for (pi2 = pi1->next; pi2; pi2 = pi2->next) { | |
2483 | if (CHECK_FLAG(pi2->flags, | |
2484 | BGP_PATH_DMED_CHECK)) | |
2485 | continue; | |
2486 | if (BGP_PATH_HOLDDOWN(pi2)) | |
2487 | continue; | |
2488 | if (pi2->peer != bgp->peer_self | |
2489 | && !CHECK_FLAG( | |
2490 | pi2->peer->sflags, | |
2491 | PEER_STATUS_NSF_WAIT)) | |
2492 | if (pi2->peer->status | |
2493 | != Established) | |
2494 | continue; | |
2495 | ||
2496 | if (!aspath_cmp_left(pi1->attr->aspath, | |
2497 | pi2->attr->aspath) | |
2498 | && !aspath_cmp_left_confed( | |
2499 | pi1->attr->aspath, | |
2500 | pi2->attr->aspath)) | |
2501 | continue; | |
2502 | ||
2503 | if (bgp_path_info_cmp( | |
2504 | bgp, pi2, new_select, | |
2505 | &paths_eq, mpath_cfg, debug, | |
2506 | pfx_buf, afi, safi, | |
2507 | &dest->reason)) { | |
2508 | bgp_path_info_unset_flag( | |
2509 | dest, new_select, | |
2510 | BGP_PATH_DMED_SELECTED); | |
2511 | new_select = pi2; | |
2512 | } | |
2513 | ||
2514 | bgp_path_info_set_flag( | |
2515 | dest, pi2, BGP_PATH_DMED_CHECK); | |
2516 | } | |
2517 | } | |
2518 | bgp_path_info_set_flag(dest, new_select, | |
2519 | BGP_PATH_DMED_CHECK); | |
2520 | bgp_path_info_set_flag(dest, new_select, | |
2521 | BGP_PATH_DMED_SELECTED); | |
2522 | ||
2523 | if (debug) { | |
2524 | bgp_path_info_path_with_addpath_rx_str( | |
2525 | new_select, path_buf, sizeof(path_buf)); | |
2526 | zlog_debug( | |
2527 | "%pBD(%s): %s is the bestpath from AS %u", | |
2528 | dest, bgp->name_pretty, path_buf, | |
2529 | aspath_get_first_as( | |
2530 | new_select->attr->aspath)); | |
2531 | } | |
2532 | } | |
2533 | } | |
2534 | ||
2535 | /* Check old selected route and new selected route. */ | |
2536 | old_select = NULL; | |
2537 | new_select = NULL; | |
2538 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2539 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2540 | enum bgp_path_selection_reason reason; | |
2541 | ||
2542 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
2543 | old_select = pi; | |
2544 | ||
2545 | if (BGP_PATH_HOLDDOWN(pi)) { | |
2546 | /* reap REMOVED routes, if needs be | |
2547 | * selected route must stay for a while longer though | |
2548 | */ | |
2549 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED) | |
2550 | && (pi != old_select)) | |
2551 | bgp_path_info_reap(dest, pi); | |
2552 | ||
2553 | if (debug) | |
2554 | zlog_debug("%s: pi %p in holddown", __func__, | |
2555 | pi); | |
2556 | ||
2557 | continue; | |
2558 | } | |
2559 | ||
2560 | if (pi->peer && pi->peer != bgp->peer_self | |
2561 | && !CHECK_FLAG(pi->peer->sflags, PEER_STATUS_NSF_WAIT)) | |
2562 | if (!peer_established(pi->peer)) { | |
2563 | ||
2564 | if (debug) | |
2565 | zlog_debug( | |
2566 | "%s: pi %p non self peer %s not estab state", | |
2567 | __func__, pi, pi->peer->host); | |
2568 | ||
2569 | continue; | |
2570 | } | |
2571 | ||
2572 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DETERMINISTIC_MED) | |
2573 | && (!CHECK_FLAG(pi->flags, BGP_PATH_DMED_SELECTED))) { | |
2574 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_DMED_CHECK); | |
2575 | if (debug) | |
2576 | zlog_debug("%s: pi %p dmed", __func__, pi); | |
2577 | continue; | |
2578 | } | |
2579 | ||
2580 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_DMED_CHECK); | |
2581 | ||
2582 | reason = dest->reason; | |
2583 | if (bgp_path_info_cmp(bgp, pi, new_select, &paths_eq, mpath_cfg, | |
2584 | debug, pfx_buf, afi, safi, | |
2585 | &dest->reason)) { | |
2586 | if (new_select == NULL && | |
2587 | reason != bgp_path_selection_none) | |
2588 | dest->reason = reason; | |
2589 | new_select = pi; | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | /* Now that we know which path is the bestpath see if any of the other | |
2594 | * paths | |
2595 | * qualify as multipaths | |
2596 | */ | |
2597 | if (debug) { | |
2598 | if (new_select) | |
2599 | bgp_path_info_path_with_addpath_rx_str( | |
2600 | new_select, path_buf, sizeof(path_buf)); | |
2601 | else | |
2602 | snprintf(path_buf, sizeof(path_buf), "NONE"); | |
2603 | zlog_debug( | |
2604 | "%pBD(%s): After path selection, newbest is %s oldbest was %s", | |
2605 | dest, bgp->name_pretty, path_buf, | |
2606 | old_select ? old_select->peer->host : "NONE"); | |
2607 | } | |
2608 | ||
2609 | if (do_mpath && new_select) { | |
2610 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2611 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2612 | ||
2613 | if (debug) | |
2614 | bgp_path_info_path_with_addpath_rx_str( | |
2615 | pi, path_buf, sizeof(path_buf)); | |
2616 | ||
2617 | if (pi == new_select) { | |
2618 | if (debug) | |
2619 | zlog_debug( | |
2620 | "%pBD(%s): %s is the bestpath, add to the multipath list", | |
2621 | dest, bgp->name_pretty, | |
2622 | path_buf); | |
2623 | bgp_mp_list_add(&mp_list, pi); | |
2624 | continue; | |
2625 | } | |
2626 | ||
2627 | if (BGP_PATH_HOLDDOWN(pi)) | |
2628 | continue; | |
2629 | ||
2630 | if (pi->peer && pi->peer != bgp->peer_self | |
2631 | && !CHECK_FLAG(pi->peer->sflags, | |
2632 | PEER_STATUS_NSF_WAIT)) | |
2633 | if (!peer_established(pi->peer)) | |
2634 | continue; | |
2635 | ||
2636 | if (!bgp_path_info_nexthop_cmp(pi, new_select)) { | |
2637 | if (debug) | |
2638 | zlog_debug( | |
2639 | "%pBD: %s has the same nexthop as the bestpath, skip it", | |
2640 | dest, path_buf); | |
2641 | continue; | |
2642 | } | |
2643 | ||
2644 | bgp_path_info_cmp(bgp, pi, new_select, &paths_eq, | |
2645 | mpath_cfg, debug, pfx_buf, afi, safi, | |
2646 | &dest->reason); | |
2647 | ||
2648 | if (paths_eq) { | |
2649 | if (debug) | |
2650 | zlog_debug( | |
2651 | "%pBD: %s is equivalent to the bestpath, add to the multipath list", | |
2652 | dest, path_buf); | |
2653 | bgp_mp_list_add(&mp_list, pi); | |
2654 | } | |
2655 | } | |
2656 | } | |
2657 | ||
2658 | bgp_path_info_mpath_update(bgp, dest, new_select, old_select, &mp_list, | |
2659 | mpath_cfg); | |
2660 | bgp_path_info_mpath_aggregate_update(new_select, old_select); | |
2661 | bgp_mp_list_clear(&mp_list); | |
2662 | ||
2663 | bgp_addpath_update_ids(bgp, dest, afi, safi); | |
2664 | ||
2665 | result->old = old_select; | |
2666 | result->new = new_select; | |
2667 | ||
2668 | return; | |
2669 | } | |
2670 | ||
2671 | /* | |
2672 | * A new route/change in bestpath of an existing route. Evaluate the path | |
2673 | * for advertisement to the subgroup. | |
2674 | */ | |
2675 | void subgroup_process_announce_selected(struct update_subgroup *subgrp, | |
2676 | struct bgp_path_info *selected, | |
2677 | struct bgp_dest *dest, | |
2678 | uint32_t addpath_tx_id) | |
2679 | { | |
2680 | const struct prefix *p; | |
2681 | struct peer *onlypeer; | |
2682 | struct attr attr; | |
2683 | afi_t afi; | |
2684 | safi_t safi; | |
2685 | struct bgp *bgp; | |
2686 | bool advertise; | |
2687 | ||
2688 | p = bgp_dest_get_prefix(dest); | |
2689 | afi = SUBGRP_AFI(subgrp); | |
2690 | safi = SUBGRP_SAFI(subgrp); | |
2691 | bgp = SUBGRP_INST(subgrp); | |
2692 | onlypeer = ((SUBGRP_PCOUNT(subgrp) == 1) ? (SUBGRP_PFIRST(subgrp))->peer | |
2693 | : NULL); | |
2694 | ||
2695 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
2696 | zlog_debug("%s: p=%pFX, selected=%p", __func__, p, selected); | |
2697 | ||
2698 | /* First update is deferred until ORF or ROUTE-REFRESH is received */ | |
2699 | if (onlypeer && CHECK_FLAG(onlypeer->af_sflags[afi][safi], | |
2700 | PEER_STATUS_ORF_WAIT_REFRESH)) | |
2701 | return; | |
2702 | ||
2703 | memset(&attr, 0, sizeof(struct attr)); | |
2704 | /* It's initialized in bgp_announce_check() */ | |
2705 | ||
2706 | /* Announcement to the subgroup. If the route is filtered withdraw it. | |
2707 | * If BGP_NODE_FIB_INSTALL_PENDING is set and data plane install status | |
2708 | * is pending (BGP_NODE_FIB_INSTALL_PENDING), do not advertise the | |
2709 | * route | |
2710 | */ | |
2711 | advertise = bgp_check_advertise(bgp, dest); | |
2712 | ||
2713 | if (selected) { | |
2714 | if (subgroup_announce_check(dest, selected, subgrp, p, &attr, | |
2715 | NULL)) { | |
2716 | /* Route is selected, if the route is already installed | |
2717 | * in FIB, then it is advertised | |
2718 | */ | |
2719 | if (advertise) { | |
2720 | if (!bgp_check_withdrawal(bgp, dest)) | |
2721 | bgp_adj_out_set_subgroup( | |
2722 | dest, subgrp, &attr, selected); | |
2723 | else | |
2724 | bgp_adj_out_unset_subgroup( | |
2725 | dest, subgrp, 1, addpath_tx_id); | |
2726 | } | |
2727 | } else | |
2728 | bgp_adj_out_unset_subgroup(dest, subgrp, 1, | |
2729 | addpath_tx_id); | |
2730 | } | |
2731 | ||
2732 | /* If selected is NULL we must withdraw the path using addpath_tx_id */ | |
2733 | else { | |
2734 | bgp_adj_out_unset_subgroup(dest, subgrp, 1, addpath_tx_id); | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | /* | |
2739 | * Clear IGP changed flag and attribute changed flag for a route (all paths). | |
2740 | * This is called at the end of route processing. | |
2741 | */ | |
2742 | void bgp_zebra_clear_route_change_flags(struct bgp_dest *dest) | |
2743 | { | |
2744 | struct bgp_path_info *pi; | |
2745 | ||
2746 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
2747 | if (BGP_PATH_HOLDDOWN(pi)) | |
2748 | continue; | |
2749 | UNSET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
2750 | UNSET_FLAG(pi->flags, BGP_PATH_ATTR_CHANGED); | |
2751 | } | |
2752 | } | |
2753 | ||
2754 | /* | |
2755 | * Has the route changed from the RIB's perspective? This is invoked only | |
2756 | * if the route selection returns the same best route as earlier - to | |
2757 | * determine if we need to update zebra or not. | |
2758 | */ | |
2759 | bool bgp_zebra_has_route_changed(struct bgp_path_info *selected) | |
2760 | { | |
2761 | struct bgp_path_info *mpinfo; | |
2762 | ||
2763 | /* If this is multipath, check all selected paths for any nexthop | |
2764 | * change or attribute change. Some attribute changes (e.g., community) | |
2765 | * aren't of relevance to the RIB, but we'll update zebra to ensure | |
2766 | * we handle the case of BGP nexthop change. This is the behavior | |
2767 | * when the best path has an attribute change anyway. | |
2768 | */ | |
2769 | if (CHECK_FLAG(selected->flags, BGP_PATH_IGP_CHANGED) | |
2770 | || CHECK_FLAG(selected->flags, BGP_PATH_MULTIPATH_CHG) | |
2771 | || CHECK_FLAG(selected->flags, BGP_PATH_LINK_BW_CHG)) | |
2772 | return true; | |
2773 | ||
2774 | /* | |
2775 | * If this is multipath, check all selected paths for any nexthop change | |
2776 | */ | |
2777 | for (mpinfo = bgp_path_info_mpath_first(selected); mpinfo; | |
2778 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
2779 | if (CHECK_FLAG(mpinfo->flags, BGP_PATH_IGP_CHANGED) | |
2780 | || CHECK_FLAG(mpinfo->flags, BGP_PATH_ATTR_CHANGED)) | |
2781 | return true; | |
2782 | } | |
2783 | ||
2784 | /* Nothing has changed from the RIB's perspective. */ | |
2785 | return false; | |
2786 | } | |
2787 | ||
2788 | struct bgp_process_queue { | |
2789 | struct bgp *bgp; | |
2790 | STAILQ_HEAD(, bgp_dest) pqueue; | |
2791 | #define BGP_PROCESS_QUEUE_EOIU_MARKER (1 << 0) | |
2792 | unsigned int flags; | |
2793 | unsigned int queued; | |
2794 | }; | |
2795 | ||
2796 | static void bgp_process_evpn_route_injection(struct bgp *bgp, afi_t afi, | |
2797 | safi_t safi, struct bgp_dest *dest, | |
2798 | struct bgp_path_info *new_select, | |
2799 | struct bgp_path_info *old_select) | |
2800 | { | |
2801 | const struct prefix *p = bgp_dest_get_prefix(dest); | |
2802 | ||
2803 | if ((afi != AFI_IP && afi != AFI_IP6) || (safi != SAFI_UNICAST)) | |
2804 | return; | |
2805 | ||
2806 | if (advertise_type5_routes(bgp, afi) && new_select | |
2807 | && is_route_injectable_into_evpn(new_select)) { | |
2808 | ||
2809 | /* apply the route-map */ | |
2810 | if (bgp->adv_cmd_rmap[afi][safi].map) { | |
2811 | route_map_result_t ret; | |
2812 | struct bgp_path_info rmap_path; | |
2813 | struct bgp_path_info_extra rmap_path_extra; | |
2814 | struct attr dummy_attr; | |
2815 | ||
2816 | dummy_attr = *new_select->attr; | |
2817 | ||
2818 | /* Fill temp path_info */ | |
2819 | prep_for_rmap_apply(&rmap_path, &rmap_path_extra, dest, | |
2820 | new_select, new_select->peer, | |
2821 | &dummy_attr); | |
2822 | ||
2823 | RESET_FLAG(dummy_attr.rmap_change_flags); | |
2824 | ||
2825 | ret = route_map_apply(bgp->adv_cmd_rmap[afi][safi].map, | |
2826 | p, &rmap_path); | |
2827 | ||
2828 | if (ret == RMAP_DENYMATCH) { | |
2829 | bgp_attr_flush(&dummy_attr); | |
2830 | bgp_evpn_withdraw_type5_route(bgp, p, afi, | |
2831 | safi); | |
2832 | } else | |
2833 | bgp_evpn_advertise_type5_route( | |
2834 | bgp, p, &dummy_attr, afi, safi); | |
2835 | } else { | |
2836 | bgp_evpn_advertise_type5_route(bgp, p, new_select->attr, | |
2837 | afi, safi); | |
2838 | } | |
2839 | } else if (advertise_type5_routes(bgp, afi) && old_select | |
2840 | && is_route_injectable_into_evpn(old_select)) | |
2841 | bgp_evpn_withdraw_type5_route(bgp, p, afi, safi); | |
2842 | } | |
2843 | ||
2844 | /* | |
2845 | * Utility to determine whether a particular path_info should use | |
2846 | * the IMPLICIT_NULL label. This is pretty specialized: it's only called | |
2847 | * in a path where we basically _know_ this is a BGP-LU route. | |
2848 | */ | |
2849 | static bool bgp_lu_need_imp_null(const struct bgp_path_info *new_select) | |
2850 | { | |
2851 | /* Certain types get imp null; so do paths where the nexthop is | |
2852 | * not labeled. | |
2853 | */ | |
2854 | if (new_select->sub_type == BGP_ROUTE_STATIC | |
2855 | || new_select->sub_type == BGP_ROUTE_AGGREGATE | |
2856 | || new_select->sub_type == BGP_ROUTE_REDISTRIBUTE) | |
2857 | return true; | |
2858 | else if (new_select->extra == NULL || | |
2859 | !bgp_is_valid_label(&new_select->extra->label[0])) | |
2860 | /* TODO -- should be configurable? */ | |
2861 | return true; | |
2862 | else | |
2863 | return false; | |
2864 | } | |
2865 | ||
2866 | /* | |
2867 | * old_select = The old best path | |
2868 | * new_select = the new best path | |
2869 | * | |
2870 | * if (!old_select && new_select) | |
2871 | * We are sending new information on. | |
2872 | * | |
2873 | * if (old_select && new_select) { | |
2874 | * if (new_select != old_select) | |
2875 | * We have a new best path send a change | |
2876 | * else | |
2877 | * We've received a update with new attributes that needs | |
2878 | * to be passed on. | |
2879 | * } | |
2880 | * | |
2881 | * if (old_select && !new_select) | |
2882 | * We have no eligible route that we can announce or the rn | |
2883 | * is being removed. | |
2884 | */ | |
2885 | static void bgp_process_main_one(struct bgp *bgp, struct bgp_dest *dest, | |
2886 | afi_t afi, safi_t safi) | |
2887 | { | |
2888 | struct bgp_path_info *new_select; | |
2889 | struct bgp_path_info *old_select; | |
2890 | struct bgp_path_info_pair old_and_new; | |
2891 | int debug = 0; | |
2892 | ||
2893 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS)) { | |
2894 | if (dest) | |
2895 | debug = bgp_debug_bestpath(dest); | |
2896 | if (debug) | |
2897 | zlog_debug( | |
2898 | "%s: bgp delete in progress, ignoring event, p=%pBD", | |
2899 | __func__, dest); | |
2900 | return; | |
2901 | } | |
2902 | /* Is it end of initial update? (after startup) */ | |
2903 | if (!dest) { | |
2904 | frr_timestamp(3, bgp->update_delay_zebra_resume_time, | |
2905 | sizeof(bgp->update_delay_zebra_resume_time)); | |
2906 | ||
2907 | bgp->main_zebra_update_hold = 0; | |
2908 | FOREACH_AFI_SAFI (afi, safi) { | |
2909 | if (bgp_fibupd_safi(safi)) | |
2910 | bgp_zebra_announce_table(bgp, afi, safi); | |
2911 | } | |
2912 | bgp->main_peers_update_hold = 0; | |
2913 | ||
2914 | bgp_start_routeadv(bgp); | |
2915 | return; | |
2916 | } | |
2917 | ||
2918 | const struct prefix *p = bgp_dest_get_prefix(dest); | |
2919 | ||
2920 | debug = bgp_debug_bestpath(dest); | |
2921 | if (debug) | |
2922 | zlog_debug("%s: p=%pBDi(%s) afi=%s, safi=%s start", __func__, | |
2923 | dest, bgp->name_pretty, afi2str(afi), | |
2924 | safi2str(safi)); | |
2925 | ||
2926 | /* The best path calculation for the route is deferred if | |
2927 | * BGP_NODE_SELECT_DEFER is set | |
2928 | */ | |
2929 | if (CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER)) { | |
2930 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
2931 | zlog_debug("SELECT_DEFER flag set for route %p", dest); | |
2932 | return; | |
2933 | } | |
2934 | ||
2935 | /* Best path selection. */ | |
2936 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, | |
2937 | afi, safi); | |
2938 | old_select = old_and_new.old; | |
2939 | new_select = old_and_new.new; | |
2940 | ||
2941 | /* Do we need to allocate or free labels? | |
2942 | * Right now, since we only deal with per-prefix labels, it is not | |
2943 | * necessary to do this upon changes to best path. Exceptions: | |
2944 | * - label index has changed -> recalculate resulting label | |
2945 | * - path_info sub_type changed -> switch to/from implicit-null | |
2946 | * - no valid label (due to removed static label binding) -> get new one | |
2947 | */ | |
2948 | if (bgp->allocate_mpls_labels[afi][safi]) { | |
2949 | if (new_select) { | |
2950 | if (!old_select | |
2951 | || bgp_label_index_differs(new_select, old_select) | |
2952 | || new_select->sub_type != old_select->sub_type | |
2953 | || !bgp_is_valid_label(&dest->local_label)) { | |
2954 | /* Enforced penultimate hop popping: | |
2955 | * implicit-null for local routes, aggregate | |
2956 | * and redistributed routes | |
2957 | */ | |
2958 | if (bgp_lu_need_imp_null(new_select)) { | |
2959 | if (CHECK_FLAG( | |
2960 | dest->flags, | |
2961 | BGP_NODE_REGISTERED_FOR_LABEL) | |
2962 | || CHECK_FLAG( | |
2963 | dest->flags, | |
2964 | BGP_NODE_LABEL_REQUESTED)) | |
2965 | bgp_unregister_for_label(dest); | |
2966 | label_ntop(MPLS_LABEL_IMPLICIT_NULL, 1, | |
2967 | &dest->local_label); | |
2968 | bgp_set_valid_label(&dest->local_label); | |
2969 | } else | |
2970 | bgp_register_for_label(dest, | |
2971 | new_select); | |
2972 | } | |
2973 | } else if (CHECK_FLAG(dest->flags, | |
2974 | BGP_NODE_REGISTERED_FOR_LABEL) | |
2975 | || CHECK_FLAG(dest->flags, | |
2976 | BGP_NODE_LABEL_REQUESTED)) { | |
2977 | bgp_unregister_for_label(dest); | |
2978 | } | |
2979 | } else if (CHECK_FLAG(dest->flags, BGP_NODE_REGISTERED_FOR_LABEL) | |
2980 | || CHECK_FLAG(dest->flags, BGP_NODE_LABEL_REQUESTED)) { | |
2981 | bgp_unregister_for_label(dest); | |
2982 | } | |
2983 | ||
2984 | if (debug) | |
2985 | zlog_debug( | |
2986 | "%s: p=%pBD(%s) afi=%s, safi=%s, old_select=%p, new_select=%p", | |
2987 | __func__, dest, bgp->name_pretty, afi2str(afi), | |
2988 | safi2str(safi), old_select, new_select); | |
2989 | ||
2990 | /* If best route remains the same and this is not due to user-initiated | |
2991 | * clear, see exactly what needs to be done. | |
2992 | */ | |
2993 | if (old_select && old_select == new_select | |
2994 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
2995 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
2996 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
2997 | if (bgp_zebra_has_route_changed(old_select)) { | |
2998 | #ifdef ENABLE_BGP_VNC | |
2999 | vnc_import_bgp_add_route(bgp, p, old_select); | |
3000 | vnc_import_bgp_exterior_add_route(bgp, p, old_select); | |
3001 | #endif | |
3002 | if (bgp_fibupd_safi(safi) | |
3003 | && !bgp_option_check(BGP_OPT_NO_FIB)) { | |
3004 | ||
3005 | if (BGP_SUPPRESS_FIB_ENABLED(bgp) | |
3006 | && new_select->sub_type == BGP_ROUTE_NORMAL) | |
3007 | SET_FLAG(dest->flags, | |
3008 | BGP_NODE_FIB_INSTALL_PENDING); | |
3009 | ||
3010 | if (new_select->type == ZEBRA_ROUTE_BGP | |
3011 | && (new_select->sub_type == BGP_ROUTE_NORMAL | |
3012 | || new_select->sub_type | |
3013 | == BGP_ROUTE_IMPORTED)) | |
3014 | ||
3015 | bgp_zebra_announce(dest, p, old_select, | |
3016 | bgp, afi, safi); | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | /* If there is a change of interest to peers, reannounce the | |
3021 | * route. */ | |
3022 | if (CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
3023 | || CHECK_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG) | |
3024 | || CHECK_FLAG(dest->flags, BGP_NODE_LABEL_CHANGED)) { | |
3025 | group_announce_route(bgp, afi, safi, dest, new_select); | |
3026 | ||
3027 | /* unicast routes must also be annouced to | |
3028 | * labeled-unicast update-groups */ | |
3029 | if (safi == SAFI_UNICAST) | |
3030 | group_announce_route(bgp, afi, | |
3031 | SAFI_LABELED_UNICAST, dest, | |
3032 | new_select); | |
3033 | ||
3034 | UNSET_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED); | |
3035 | UNSET_FLAG(dest->flags, BGP_NODE_LABEL_CHANGED); | |
3036 | } | |
3037 | ||
3038 | /* advertise/withdraw type-5 routes */ | |
3039 | if (CHECK_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG) | |
3040 | || CHECK_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG)) | |
3041 | bgp_process_evpn_route_injection( | |
3042 | bgp, afi, safi, dest, old_select, old_select); | |
3043 | ||
3044 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
3045 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); | |
3046 | bgp_zebra_clear_route_change_flags(dest); | |
3047 | UNSET_FLAG(dest->flags, BGP_NODE_PROCESS_SCHEDULED); | |
3048 | return; | |
3049 | } | |
3050 | ||
3051 | /* If the user did "clear ip bgp prefix x.x.x.x" this flag will be set | |
3052 | */ | |
3053 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); | |
3054 | ||
3055 | /* bestpath has changed; bump version */ | |
3056 | if (old_select || new_select) { | |
3057 | bgp_bump_version(dest); | |
3058 | ||
3059 | if (!bgp->t_rmap_def_originate_eval) { | |
3060 | bgp_lock(bgp); | |
3061 | thread_add_timer( | |
3062 | bm->master, | |
3063 | update_group_refresh_default_originate_route_map, | |
3064 | bgp, RMAP_DEFAULT_ORIGINATE_EVAL_TIMER, | |
3065 | &bgp->t_rmap_def_originate_eval); | |
3066 | } | |
3067 | } | |
3068 | ||
3069 | if (old_select) | |
3070 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); | |
3071 | if (new_select) { | |
3072 | if (debug) | |
3073 | zlog_debug("%s: setting SELECTED flag", __func__); | |
3074 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); | |
3075 | bgp_path_info_unset_flag(dest, new_select, | |
3076 | BGP_PATH_ATTR_CHANGED); | |
3077 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); | |
3078 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); | |
3079 | } | |
3080 | ||
3081 | #ifdef ENABLE_BGP_VNC | |
3082 | if ((afi == AFI_IP || afi == AFI_IP6) && (safi == SAFI_UNICAST)) { | |
3083 | if (old_select != new_select) { | |
3084 | if (old_select) { | |
3085 | vnc_import_bgp_exterior_del_route(bgp, p, | |
3086 | old_select); | |
3087 | vnc_import_bgp_del_route(bgp, p, old_select); | |
3088 | } | |
3089 | if (new_select) { | |
3090 | vnc_import_bgp_exterior_add_route(bgp, p, | |
3091 | new_select); | |
3092 | vnc_import_bgp_add_route(bgp, p, new_select); | |
3093 | } | |
3094 | } | |
3095 | } | |
3096 | #endif | |
3097 | ||
3098 | group_announce_route(bgp, afi, safi, dest, new_select); | |
3099 | ||
3100 | /* unicast routes must also be annouced to labeled-unicast update-groups | |
3101 | */ | |
3102 | if (safi == SAFI_UNICAST) | |
3103 | group_announce_route(bgp, afi, SAFI_LABELED_UNICAST, dest, | |
3104 | new_select); | |
3105 | ||
3106 | /* FIB update. */ | |
3107 | if (bgp_fibupd_safi(safi) && (bgp->inst_type != BGP_INSTANCE_TYPE_VIEW) | |
3108 | && !bgp_option_check(BGP_OPT_NO_FIB)) { | |
3109 | ||
3110 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
3111 | && (new_select->sub_type == BGP_ROUTE_NORMAL | |
3112 | || new_select->sub_type == BGP_ROUTE_AGGREGATE | |
3113 | || new_select->sub_type == BGP_ROUTE_IMPORTED)) { | |
3114 | ||
3115 | if (BGP_SUPPRESS_FIB_ENABLED(bgp)) | |
3116 | SET_FLAG(dest->flags, | |
3117 | BGP_NODE_FIB_INSTALL_PENDING); | |
3118 | ||
3119 | /* if this is an evpn imported type-5 prefix, | |
3120 | * we need to withdraw the route first to clear | |
3121 | * the nh neigh and the RMAC entry. | |
3122 | */ | |
3123 | if (old_select && | |
3124 | is_route_parent_evpn(old_select)) | |
3125 | bgp_zebra_withdraw(p, old_select, bgp, safi); | |
3126 | ||
3127 | bgp_zebra_announce(dest, p, new_select, bgp, afi, safi); | |
3128 | } else { | |
3129 | /* Withdraw the route from the kernel. */ | |
3130 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
3131 | && (old_select->sub_type == BGP_ROUTE_NORMAL | |
3132 | || old_select->sub_type == BGP_ROUTE_AGGREGATE | |
3133 | || old_select->sub_type == BGP_ROUTE_IMPORTED)) | |
3134 | ||
3135 | bgp_zebra_withdraw(p, old_select, bgp, safi); | |
3136 | } | |
3137 | } | |
3138 | ||
3139 | bgp_process_evpn_route_injection(bgp, afi, safi, dest, new_select, | |
3140 | old_select); | |
3141 | ||
3142 | /* Clear any route change flags. */ | |
3143 | bgp_zebra_clear_route_change_flags(dest); | |
3144 | ||
3145 | /* Reap old select bgp_path_info, if it has been removed */ | |
3146 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
3147 | bgp_path_info_reap(dest, old_select); | |
3148 | ||
3149 | UNSET_FLAG(dest->flags, BGP_NODE_PROCESS_SCHEDULED); | |
3150 | return; | |
3151 | } | |
3152 | ||
3153 | /* Process the routes with the flag BGP_NODE_SELECT_DEFER set */ | |
3154 | int bgp_best_path_select_defer(struct bgp *bgp, afi_t afi, safi_t safi) | |
3155 | { | |
3156 | struct bgp_dest *dest; | |
3157 | int cnt = 0; | |
3158 | struct afi_safi_info *thread_info; | |
3159 | ||
3160 | if (bgp->gr_info[afi][safi].t_route_select) { | |
3161 | struct thread *t = bgp->gr_info[afi][safi].t_route_select; | |
3162 | ||
3163 | thread_info = THREAD_ARG(t); | |
3164 | XFREE(MTYPE_TMP, thread_info); | |
3165 | BGP_TIMER_OFF(bgp->gr_info[afi][safi].t_route_select); | |
3166 | } | |
3167 | ||
3168 | if (BGP_DEBUG(update, UPDATE_OUT)) { | |
3169 | zlog_debug("%s: processing route for %s : cnt %d", __func__, | |
3170 | get_afi_safi_str(afi, safi, false), | |
3171 | bgp->gr_info[afi][safi].gr_deferred); | |
3172 | } | |
3173 | ||
3174 | /* Process the route list */ | |
3175 | for (dest = bgp_table_top(bgp->rib[afi][safi]); | |
3176 | dest && bgp->gr_info[afi][safi].gr_deferred != 0; | |
3177 | dest = bgp_route_next(dest)) { | |
3178 | if (!CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER)) | |
3179 | continue; | |
3180 | ||
3181 | UNSET_FLAG(dest->flags, BGP_NODE_SELECT_DEFER); | |
3182 | bgp->gr_info[afi][safi].gr_deferred--; | |
3183 | bgp_process_main_one(bgp, dest, afi, safi); | |
3184 | cnt++; | |
3185 | if (cnt >= BGP_MAX_BEST_ROUTE_SELECT) { | |
3186 | bgp_dest_unlock_node(dest); | |
3187 | break; | |
3188 | } | |
3189 | } | |
3190 | ||
3191 | /* Send EOR message when all routes are processed */ | |
3192 | if (!bgp->gr_info[afi][safi].gr_deferred) { | |
3193 | bgp_send_delayed_eor(bgp); | |
3194 | /* Send route processing complete message to RIB */ | |
3195 | bgp_zebra_update(afi, safi, bgp->vrf_id, | |
3196 | ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE); | |
3197 | return 0; | |
3198 | } | |
3199 | ||
3200 | thread_info = XMALLOC(MTYPE_TMP, sizeof(struct afi_safi_info)); | |
3201 | ||
3202 | thread_info->afi = afi; | |
3203 | thread_info->safi = safi; | |
3204 | thread_info->bgp = bgp; | |
3205 | ||
3206 | /* If there are more routes to be processed, start the | |
3207 | * selection timer | |
3208 | */ | |
3209 | thread_add_timer(bm->master, bgp_route_select_timer_expire, thread_info, | |
3210 | BGP_ROUTE_SELECT_DELAY, | |
3211 | &bgp->gr_info[afi][safi].t_route_select); | |
3212 | return 0; | |
3213 | } | |
3214 | ||
3215 | static wq_item_status bgp_process_wq(struct work_queue *wq, void *data) | |
3216 | { | |
3217 | struct bgp_process_queue *pqnode = data; | |
3218 | struct bgp *bgp = pqnode->bgp; | |
3219 | struct bgp_table *table; | |
3220 | struct bgp_dest *dest; | |
3221 | ||
3222 | /* eoiu marker */ | |
3223 | if (CHECK_FLAG(pqnode->flags, BGP_PROCESS_QUEUE_EOIU_MARKER)) { | |
3224 | bgp_process_main_one(bgp, NULL, 0, 0); | |
3225 | /* should always have dedicated wq call */ | |
3226 | assert(STAILQ_FIRST(&pqnode->pqueue) == NULL); | |
3227 | return WQ_SUCCESS; | |
3228 | } | |
3229 | ||
3230 | while (!STAILQ_EMPTY(&pqnode->pqueue)) { | |
3231 | dest = STAILQ_FIRST(&pqnode->pqueue); | |
3232 | STAILQ_REMOVE_HEAD(&pqnode->pqueue, pq); | |
3233 | STAILQ_NEXT(dest, pq) = NULL; /* complete unlink */ | |
3234 | table = bgp_dest_table(dest); | |
3235 | /* note, new DESTs may be added as part of processing */ | |
3236 | bgp_process_main_one(bgp, dest, table->afi, table->safi); | |
3237 | ||
3238 | bgp_dest_unlock_node(dest); | |
3239 | bgp_table_unlock(table); | |
3240 | } | |
3241 | ||
3242 | return WQ_SUCCESS; | |
3243 | } | |
3244 | ||
3245 | static void bgp_processq_del(struct work_queue *wq, void *data) | |
3246 | { | |
3247 | struct bgp_process_queue *pqnode = data; | |
3248 | ||
3249 | bgp_unlock(pqnode->bgp); | |
3250 | ||
3251 | XFREE(MTYPE_BGP_PROCESS_QUEUE, pqnode); | |
3252 | } | |
3253 | ||
3254 | void bgp_process_queue_init(struct bgp *bgp) | |
3255 | { | |
3256 | if (!bgp->process_queue) { | |
3257 | char name[BUFSIZ]; | |
3258 | ||
3259 | snprintf(name, BUFSIZ, "process_queue %s", bgp->name_pretty); | |
3260 | bgp->process_queue = work_queue_new(bm->master, name); | |
3261 | } | |
3262 | ||
3263 | bgp->process_queue->spec.workfunc = &bgp_process_wq; | |
3264 | bgp->process_queue->spec.del_item_data = &bgp_processq_del; | |
3265 | bgp->process_queue->spec.max_retries = 0; | |
3266 | bgp->process_queue->spec.hold = 50; | |
3267 | /* Use a higher yield value of 50ms for main queue processing */ | |
3268 | bgp->process_queue->spec.yield = 50 * 1000L; | |
3269 | } | |
3270 | ||
3271 | static struct bgp_process_queue *bgp_processq_alloc(struct bgp *bgp) | |
3272 | { | |
3273 | struct bgp_process_queue *pqnode; | |
3274 | ||
3275 | pqnode = XCALLOC(MTYPE_BGP_PROCESS_QUEUE, | |
3276 | sizeof(struct bgp_process_queue)); | |
3277 | ||
3278 | /* unlocked in bgp_processq_del */ | |
3279 | pqnode->bgp = bgp_lock(bgp); | |
3280 | STAILQ_INIT(&pqnode->pqueue); | |
3281 | ||
3282 | return pqnode; | |
3283 | } | |
3284 | ||
3285 | void bgp_process(struct bgp *bgp, struct bgp_dest *dest, afi_t afi, safi_t safi) | |
3286 | { | |
3287 | #define ARBITRARY_PROCESS_QLEN 10000 | |
3288 | struct work_queue *wq = bgp->process_queue; | |
3289 | struct bgp_process_queue *pqnode; | |
3290 | int pqnode_reuse = 0; | |
3291 | ||
3292 | /* already scheduled for processing? */ | |
3293 | if (CHECK_FLAG(dest->flags, BGP_NODE_PROCESS_SCHEDULED)) | |
3294 | return; | |
3295 | ||
3296 | /* If the flag BGP_NODE_SELECT_DEFER is set, do not add route to | |
3297 | * the workqueue | |
3298 | */ | |
3299 | if (CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER)) { | |
3300 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
3301 | zlog_debug("BGP_NODE_SELECT_DEFER set for route %p", | |
3302 | dest); | |
3303 | return; | |
3304 | } | |
3305 | ||
3306 | if (CHECK_FLAG(dest->flags, BGP_NODE_SOFT_RECONFIG)) { | |
3307 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
3308 | zlog_debug( | |
3309 | "Soft reconfigure table in progress for route %p", | |
3310 | dest); | |
3311 | return; | |
3312 | } | |
3313 | ||
3314 | if (wq == NULL) | |
3315 | return; | |
3316 | ||
3317 | /* Add route nodes to an existing work queue item until reaching the | |
3318 | limit only if is from the same BGP view and it's not an EOIU marker | |
3319 | */ | |
3320 | if (work_queue_item_count(wq)) { | |
3321 | struct work_queue_item *item = work_queue_last_item(wq); | |
3322 | pqnode = item->data; | |
3323 | ||
3324 | if (CHECK_FLAG(pqnode->flags, BGP_PROCESS_QUEUE_EOIU_MARKER) | |
3325 | || pqnode->bgp != bgp | |
3326 | || pqnode->queued >= ARBITRARY_PROCESS_QLEN) | |
3327 | pqnode = bgp_processq_alloc(bgp); | |
3328 | else | |
3329 | pqnode_reuse = 1; | |
3330 | } else | |
3331 | pqnode = bgp_processq_alloc(bgp); | |
3332 | /* all unlocked in bgp_process_wq */ | |
3333 | bgp_table_lock(bgp_dest_table(dest)); | |
3334 | ||
3335 | SET_FLAG(dest->flags, BGP_NODE_PROCESS_SCHEDULED); | |
3336 | bgp_dest_lock_node(dest); | |
3337 | ||
3338 | /* can't be enqueued twice */ | |
3339 | assert(STAILQ_NEXT(dest, pq) == NULL); | |
3340 | STAILQ_INSERT_TAIL(&pqnode->pqueue, dest, pq); | |
3341 | pqnode->queued++; | |
3342 | ||
3343 | if (!pqnode_reuse) | |
3344 | work_queue_add(wq, pqnode); | |
3345 | ||
3346 | return; | |
3347 | } | |
3348 | ||
3349 | void bgp_add_eoiu_mark(struct bgp *bgp) | |
3350 | { | |
3351 | struct bgp_process_queue *pqnode; | |
3352 | ||
3353 | if (bgp->process_queue == NULL) | |
3354 | return; | |
3355 | ||
3356 | pqnode = bgp_processq_alloc(bgp); | |
3357 | ||
3358 | SET_FLAG(pqnode->flags, BGP_PROCESS_QUEUE_EOIU_MARKER); | |
3359 | work_queue_add(bgp->process_queue, pqnode); | |
3360 | } | |
3361 | ||
3362 | static void bgp_maximum_prefix_restart_timer(struct thread *thread) | |
3363 | { | |
3364 | struct peer *peer; | |
3365 | ||
3366 | peer = THREAD_ARG(thread); | |
3367 | peer->t_pmax_restart = NULL; | |
3368 | ||
3369 | if (bgp_debug_neighbor_events(peer)) | |
3370 | zlog_debug( | |
3371 | "%s Maximum-prefix restart timer expired, restore peering", | |
3372 | peer->host); | |
3373 | ||
3374 | if ((peer_clear(peer, NULL) < 0) && bgp_debug_neighbor_events(peer)) | |
3375 | zlog_debug("%s: %s peer_clear failed", __func__, peer->host); | |
3376 | } | |
3377 | ||
3378 | static uint32_t bgp_filtered_routes_count(struct peer *peer, afi_t afi, | |
3379 | safi_t safi) | |
3380 | { | |
3381 | uint32_t count = 0; | |
3382 | bool filtered = false; | |
3383 | struct bgp_dest *dest; | |
3384 | struct bgp_adj_in *ain; | |
3385 | struct attr attr = {}; | |
3386 | struct bgp_table *table = peer->bgp->rib[afi][safi]; | |
3387 | ||
3388 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
3389 | for (ain = dest->adj_in; ain; ain = ain->next) { | |
3390 | const struct prefix *rn_p = bgp_dest_get_prefix(dest); | |
3391 | ||
3392 | attr = *ain->attr; | |
3393 | ||
3394 | if (bgp_input_filter(peer, rn_p, &attr, afi, safi) | |
3395 | == FILTER_DENY) | |
3396 | filtered = true; | |
3397 | ||
3398 | if (bgp_input_modifier( | |
3399 | peer, rn_p, &attr, afi, safi, | |
3400 | ROUTE_MAP_IN_NAME(&peer->filter[afi][safi]), | |
3401 | NULL, 0, NULL) | |
3402 | == RMAP_DENY) | |
3403 | filtered = true; | |
3404 | ||
3405 | if (filtered) | |
3406 | count++; | |
3407 | ||
3408 | bgp_attr_flush(&attr); | |
3409 | } | |
3410 | } | |
3411 | ||
3412 | return count; | |
3413 | } | |
3414 | ||
3415 | bool bgp_maximum_prefix_overflow(struct peer *peer, afi_t afi, safi_t safi, | |
3416 | int always) | |
3417 | { | |
3418 | iana_afi_t pkt_afi; | |
3419 | iana_safi_t pkt_safi; | |
3420 | uint32_t pcount = (CHECK_FLAG(peer->af_flags[afi][safi], | |
3421 | PEER_FLAG_MAX_PREFIX_FORCE)) | |
3422 | ? bgp_filtered_routes_count(peer, afi, safi) | |
3423 | + peer->pcount[afi][safi] | |
3424 | : peer->pcount[afi][safi]; | |
3425 | ||
3426 | if (!CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_MAX_PREFIX)) | |
3427 | return false; | |
3428 | ||
3429 | if (pcount > peer->pmax[afi][safi]) { | |
3430 | if (CHECK_FLAG(peer->af_sflags[afi][safi], | |
3431 | PEER_STATUS_PREFIX_LIMIT) | |
3432 | && !always) | |
3433 | return false; | |
3434 | ||
3435 | zlog_info( | |
3436 | "%%MAXPFXEXCEED: No. of %s prefix received from %s %u exceed, limit %u", | |
3437 | get_afi_safi_str(afi, safi, false), peer->host, pcount, | |
3438 | peer->pmax[afi][safi]); | |
3439 | SET_FLAG(peer->af_sflags[afi][safi], PEER_STATUS_PREFIX_LIMIT); | |
3440 | ||
3441 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
3442 | PEER_FLAG_MAX_PREFIX_WARNING)) | |
3443 | return false; | |
3444 | ||
3445 | /* Convert AFI, SAFI to values for packet. */ | |
3446 | pkt_afi = afi_int2iana(afi); | |
3447 | pkt_safi = safi_int2iana(safi); | |
3448 | { | |
3449 | uint8_t ndata[7]; | |
3450 | ||
3451 | ndata[0] = (pkt_afi >> 8); | |
3452 | ndata[1] = pkt_afi; | |
3453 | ndata[2] = pkt_safi; | |
3454 | ndata[3] = (peer->pmax[afi][safi] >> 24); | |
3455 | ndata[4] = (peer->pmax[afi][safi] >> 16); | |
3456 | ndata[5] = (peer->pmax[afi][safi] >> 8); | |
3457 | ndata[6] = (peer->pmax[afi][safi]); | |
3458 | ||
3459 | SET_FLAG(peer->sflags, PEER_STATUS_PREFIX_OVERFLOW); | |
3460 | bgp_notify_send_with_data(peer, BGP_NOTIFY_CEASE, | |
3461 | BGP_NOTIFY_CEASE_MAX_PREFIX, | |
3462 | ndata, 7); | |
3463 | } | |
3464 | ||
3465 | /* Dynamic peers will just close their connection. */ | |
3466 | if (peer_dynamic_neighbor(peer)) | |
3467 | return true; | |
3468 | ||
3469 | /* restart timer start */ | |
3470 | if (peer->pmax_restart[afi][safi]) { | |
3471 | peer->v_pmax_restart = | |
3472 | peer->pmax_restart[afi][safi] * 60; | |
3473 | ||
3474 | if (bgp_debug_neighbor_events(peer)) | |
3475 | zlog_debug( | |
3476 | "%s Maximum-prefix restart timer started for %d secs", | |
3477 | peer->host, peer->v_pmax_restart); | |
3478 | ||
3479 | BGP_TIMER_ON(peer->t_pmax_restart, | |
3480 | bgp_maximum_prefix_restart_timer, | |
3481 | peer->v_pmax_restart); | |
3482 | } | |
3483 | ||
3484 | return true; | |
3485 | } else | |
3486 | UNSET_FLAG(peer->af_sflags[afi][safi], | |
3487 | PEER_STATUS_PREFIX_LIMIT); | |
3488 | ||
3489 | if (pcount | |
3490 | > (peer->pmax[afi][safi] * peer->pmax_threshold[afi][safi] / 100)) { | |
3491 | if (CHECK_FLAG(peer->af_sflags[afi][safi], | |
3492 | PEER_STATUS_PREFIX_THRESHOLD) | |
3493 | && !always) | |
3494 | return false; | |
3495 | ||
3496 | zlog_info( | |
3497 | "%%MAXPFX: No. of %s prefix received from %s reaches %u, max %u", | |
3498 | get_afi_safi_str(afi, safi, false), peer->host, pcount, | |
3499 | peer->pmax[afi][safi]); | |
3500 | SET_FLAG(peer->af_sflags[afi][safi], | |
3501 | PEER_STATUS_PREFIX_THRESHOLD); | |
3502 | } else | |
3503 | UNSET_FLAG(peer->af_sflags[afi][safi], | |
3504 | PEER_STATUS_PREFIX_THRESHOLD); | |
3505 | return false; | |
3506 | } | |
3507 | ||
3508 | /* Unconditionally remove the route from the RIB, without taking | |
3509 | * damping into consideration (eg, because the session went down) | |
3510 | */ | |
3511 | void bgp_rib_remove(struct bgp_dest *dest, struct bgp_path_info *pi, | |
3512 | struct peer *peer, afi_t afi, safi_t safi) | |
3513 | { | |
3514 | ||
3515 | struct bgp *bgp = NULL; | |
3516 | bool delete_route = false; | |
3517 | ||
3518 | bgp_aggregate_decrement(peer->bgp, bgp_dest_get_prefix(dest), pi, afi, | |
3519 | safi); | |
3520 | ||
3521 | if (!CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) { | |
3522 | bgp_path_info_delete(dest, pi); /* keep historical info */ | |
3523 | ||
3524 | /* If the selected path is removed, reset BGP_NODE_SELECT_DEFER | |
3525 | * flag | |
3526 | */ | |
3527 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
3528 | delete_route = true; | |
3529 | else if (bgp_dest_set_defer_flag(dest, true) < 0) | |
3530 | delete_route = true; | |
3531 | if (delete_route) { | |
3532 | if (CHECK_FLAG(dest->flags, BGP_NODE_SELECT_DEFER)) { | |
3533 | UNSET_FLAG(dest->flags, BGP_NODE_SELECT_DEFER); | |
3534 | bgp = pi->peer->bgp; | |
3535 | bgp->gr_info[afi][safi].gr_deferred--; | |
3536 | } | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | hook_call(bgp_process, peer->bgp, afi, safi, dest, peer, true); | |
3541 | bgp_process(peer->bgp, dest, afi, safi); | |
3542 | } | |
3543 | ||
3544 | static void bgp_rib_withdraw(struct bgp_dest *dest, struct bgp_path_info *pi, | |
3545 | struct peer *peer, afi_t afi, safi_t safi, | |
3546 | struct prefix_rd *prd) | |
3547 | { | |
3548 | const struct prefix *p = bgp_dest_get_prefix(dest); | |
3549 | ||
3550 | /* apply dampening, if result is suppressed, we'll be retaining | |
3551 | * the bgp_path_info in the RIB for historical reference. | |
3552 | */ | |
3553 | if (CHECK_FLAG(peer->bgp->af_flags[afi][safi], BGP_CONFIG_DAMPENING) | |
3554 | && peer->sort == BGP_PEER_EBGP) | |
3555 | if ((bgp_damp_withdraw(pi, dest, afi, safi, 0)) | |
3556 | == BGP_DAMP_SUPPRESSED) { | |
3557 | bgp_aggregate_decrement(peer->bgp, p, pi, afi, | |
3558 | safi); | |
3559 | return; | |
3560 | } | |
3561 | ||
3562 | #ifdef ENABLE_BGP_VNC | |
3563 | if (safi == SAFI_MPLS_VPN) { | |
3564 | struct bgp_dest *pdest = NULL; | |
3565 | struct bgp_table *table = NULL; | |
3566 | ||
3567 | pdest = bgp_node_get(peer->bgp->rib[afi][safi], | |
3568 | (struct prefix *)prd); | |
3569 | if (bgp_dest_has_bgp_path_info_data(pdest)) { | |
3570 | table = bgp_dest_get_bgp_table_info(pdest); | |
3571 | ||
3572 | vnc_import_bgp_del_vnc_host_route_mode_resolve_nve( | |
3573 | peer->bgp, prd, table, p, pi); | |
3574 | } | |
3575 | bgp_dest_unlock_node(pdest); | |
3576 | } | |
3577 | if ((afi == AFI_IP || afi == AFI_IP6) && (safi == SAFI_UNICAST)) { | |
3578 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
3579 | ||
3580 | vnc_import_bgp_del_route(peer->bgp, p, pi); | |
3581 | vnc_import_bgp_exterior_del_route(peer->bgp, p, pi); | |
3582 | } | |
3583 | } | |
3584 | #endif | |
3585 | ||
3586 | /* If this is an EVPN route, process for un-import. */ | |
3587 | if (safi == SAFI_EVPN) | |
3588 | bgp_evpn_unimport_route(peer->bgp, afi, safi, p, pi); | |
3589 | ||
3590 | bgp_rib_remove(dest, pi, peer, afi, safi); | |
3591 | } | |
3592 | ||
3593 | struct bgp_path_info *info_make(int type, int sub_type, unsigned short instance, | |
3594 | struct peer *peer, struct attr *attr, | |
3595 | struct bgp_dest *dest) | |
3596 | { | |
3597 | struct bgp_path_info *new; | |
3598 | ||
3599 | /* Make new BGP info. */ | |
3600 | new = XCALLOC(MTYPE_BGP_ROUTE, sizeof(struct bgp_path_info)); | |
3601 | new->type = type; | |
3602 | new->instance = instance; | |
3603 | new->sub_type = sub_type; | |
3604 | new->peer = peer; | |
3605 | new->attr = attr; | |
3606 | new->uptime = bgp_clock(); | |
3607 | new->net = dest; | |
3608 | return new; | |
3609 | } | |
3610 | ||
3611 | /* Check if received nexthop is valid or not. */ | |
3612 | bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi, | |
3613 | uint8_t type, uint8_t stype, struct attr *attr, | |
3614 | struct bgp_dest *dest) | |
3615 | { | |
3616 | bool ret = false; | |
3617 | bool is_bgp_static_route = | |
3618 | (type == ZEBRA_ROUTE_BGP && stype == BGP_ROUTE_STATIC) ? true | |
3619 | : false; | |
3620 | ||
3621 | /* | |
3622 | * Only validated for unicast and multicast currently. | |
3623 | * Also valid for EVPN where the nexthop is an IP address. | |
3624 | * If we are a bgp static route being checked then there is | |
3625 | * no need to check to see if the nexthop is martian as | |
3626 | * that it should be ok. | |
3627 | */ | |
3628 | if (is_bgp_static_route || | |
3629 | (safi != SAFI_UNICAST && safi != SAFI_MULTICAST && safi != SAFI_EVPN)) | |
3630 | return false; | |
3631 | ||
3632 | /* If NEXT_HOP is present, validate it. */ | |
3633 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP)) { | |
3634 | if (attr->nexthop.s_addr == INADDR_ANY | |
3635 | || IPV4_CLASS_DE(ntohl(attr->nexthop.s_addr)) | |
3636 | || bgp_nexthop_self(bgp, afi, type, stype, attr, dest)) | |
3637 | return true; | |
3638 | } | |
3639 | ||
3640 | /* If MP_NEXTHOP is present, validate it. */ | |
3641 | /* Note: For IPv6 nexthops, we only validate the global (1st) nexthop; | |
3642 | * there is code in bgp_attr.c to ignore the link-local (2nd) nexthop if | |
3643 | * it is not an IPv6 link-local address. | |
3644 | * | |
3645 | * If we receive an UPDATE with nexthop length set to 32 bytes | |
3646 | * we shouldn't discard an UPDATE if it's set to (::). | |
3647 | * The link-local (2st) is validated along the code path later. | |
3648 | */ | |
3649 | if (attr->mp_nexthop_len) { | |
3650 | switch (attr->mp_nexthop_len) { | |
3651 | case BGP_ATTR_NHLEN_IPV4: | |
3652 | case BGP_ATTR_NHLEN_VPNV4: | |
3653 | ret = (attr->mp_nexthop_global_in.s_addr == INADDR_ANY | |
3654 | || IPV4_CLASS_DE( | |
3655 | ntohl(attr->mp_nexthop_global_in.s_addr)) | |
3656 | || bgp_nexthop_self(bgp, afi, type, stype, attr, | |
3657 | dest)); | |
3658 | break; | |
3659 | ||
3660 | case BGP_ATTR_NHLEN_IPV6_GLOBAL: | |
3661 | case BGP_ATTR_NHLEN_VPNV6_GLOBAL: | |
3662 | ret = (IN6_IS_ADDR_UNSPECIFIED( | |
3663 | &attr->mp_nexthop_global) | |
3664 | || IN6_IS_ADDR_LOOPBACK(&attr->mp_nexthop_global) | |
3665 | || IN6_IS_ADDR_MULTICAST( | |
3666 | &attr->mp_nexthop_global) | |
3667 | || bgp_nexthop_self(bgp, afi, type, stype, attr, | |
3668 | dest)); | |
3669 | break; | |
3670 | case BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL: | |
3671 | ret = (IN6_IS_ADDR_LOOPBACK(&attr->mp_nexthop_global) | |
3672 | || IN6_IS_ADDR_MULTICAST( | |
3673 | &attr->mp_nexthop_global) | |
3674 | || bgp_nexthop_self(bgp, afi, type, stype, attr, | |
3675 | dest)); | |
3676 | break; | |
3677 | ||
3678 | default: | |
3679 | ret = true; | |
3680 | break; | |
3681 | } | |
3682 | } | |
3683 | ||
3684 | return ret; | |
3685 | } | |
3686 | ||
3687 | static void bgp_attr_add_no_export_community(struct attr *attr) | |
3688 | { | |
3689 | struct community *old; | |
3690 | struct community *new; | |
3691 | struct community *merge; | |
3692 | struct community *no_export; | |
3693 | ||
3694 | old = bgp_attr_get_community(attr); | |
3695 | no_export = community_str2com("no-export"); | |
3696 | ||
3697 | assert(no_export); | |
3698 | ||
3699 | if (old) { | |
3700 | merge = community_merge(community_dup(old), no_export); | |
3701 | ||
3702 | if (!old->refcnt) | |
3703 | community_free(&old); | |
3704 | ||
3705 | new = community_uniq_sort(merge); | |
3706 | community_free(&merge); | |
3707 | } else { | |
3708 | new = community_dup(no_export); | |
3709 | } | |
3710 | ||
3711 | community_free(&no_export); | |
3712 | ||
3713 | bgp_attr_set_community(attr, new); | |
3714 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES); | |
3715 | } | |
3716 | ||
3717 | int bgp_update(struct peer *peer, const struct prefix *p, uint32_t addpath_id, | |
3718 | struct attr *attr, afi_t afi, safi_t safi, int type, | |
3719 | int sub_type, struct prefix_rd *prd, mpls_label_t *label, | |
3720 | uint32_t num_labels, int soft_reconfig, | |
3721 | struct bgp_route_evpn *evpn) | |
3722 | { | |
3723 | int ret; | |
3724 | int aspath_loop_count = 0; | |
3725 | struct bgp_dest *dest; | |
3726 | struct bgp *bgp; | |
3727 | struct attr new_attr; | |
3728 | struct attr *attr_new; | |
3729 | struct bgp_path_info *pi; | |
3730 | struct bgp_path_info *new; | |
3731 | struct bgp_path_info_extra *extra; | |
3732 | const char *reason; | |
3733 | char pfx_buf[BGP_PRD_PATH_STRLEN]; | |
3734 | int connected = 0; | |
3735 | int do_loop_check = 1; | |
3736 | int has_valid_label = 0; | |
3737 | afi_t nh_afi; | |
3738 | uint8_t pi_type = 0; | |
3739 | uint8_t pi_sub_type = 0; | |
3740 | bool force_evpn_import = false; | |
3741 | safi_t orig_safi = safi; | |
3742 | ||
3743 | if (frrtrace_enabled(frr_bgp, process_update)) { | |
3744 | char pfxprint[PREFIX2STR_BUFFER]; | |
3745 | ||
3746 | prefix2str(p, pfxprint, sizeof(pfxprint)); | |
3747 | frrtrace(6, frr_bgp, process_update, peer, pfxprint, addpath_id, | |
3748 | afi, safi, attr); | |
3749 | } | |
3750 | ||
3751 | #ifdef ENABLE_BGP_VNC | |
3752 | int vnc_implicit_withdraw = 0; | |
3753 | #endif | |
3754 | int same_attr = 0; | |
3755 | ||
3756 | /* Special case for BGP-LU - map LU safi to ordinary unicast safi */ | |
3757 | if (orig_safi == SAFI_LABELED_UNICAST) | |
3758 | safi = SAFI_UNICAST; | |
3759 | ||
3760 | memset(&new_attr, 0, sizeof(struct attr)); | |
3761 | new_attr.label_index = BGP_INVALID_LABEL_INDEX; | |
3762 | new_attr.label = MPLS_INVALID_LABEL; | |
3763 | ||
3764 | bgp = peer->bgp; | |
3765 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, prd); | |
3766 | /* TODO: Check to see if we can get rid of "is_valid_label" */ | |
3767 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) | |
3768 | has_valid_label = (num_labels > 0) ? 1 : 0; | |
3769 | else | |
3770 | has_valid_label = bgp_is_valid_label(label); | |
3771 | ||
3772 | if (has_valid_label) | |
3773 | assert(label != NULL); | |
3774 | ||
3775 | /* Update overlay index of the attribute */ | |
3776 | if (afi == AFI_L2VPN && evpn) | |
3777 | memcpy(&attr->evpn_overlay, evpn, | |
3778 | sizeof(struct bgp_route_evpn)); | |
3779 | ||
3780 | /* When peer's soft reconfiguration enabled. Record input packet in | |
3781 | Adj-RIBs-In. */ | |
3782 | if (!soft_reconfig | |
3783 | && CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_SOFT_RECONFIG) | |
3784 | && peer != bgp->peer_self) | |
3785 | bgp_adj_in_set(dest, peer, attr, addpath_id); | |
3786 | ||
3787 | /* Check previously received route. */ | |
3788 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
3789 | if (pi->peer == peer && pi->type == type | |
3790 | && pi->sub_type == sub_type | |
3791 | && pi->addpath_rx_id == addpath_id) | |
3792 | break; | |
3793 | ||
3794 | /* AS path local-as loop check. */ | |
3795 | if (peer->change_local_as) { | |
3796 | if (peer->allowas_in[afi][safi]) | |
3797 | aspath_loop_count = peer->allowas_in[afi][safi]; | |
3798 | else if (!CHECK_FLAG(peer->flags, | |
3799 | PEER_FLAG_LOCAL_AS_NO_PREPEND)) | |
3800 | aspath_loop_count = 1; | |
3801 | ||
3802 | if (aspath_loop_check(attr->aspath, peer->change_local_as) | |
3803 | > aspath_loop_count) { | |
3804 | peer->stat_pfx_aspath_loop++; | |
3805 | reason = "as-path contains our own AS;"; | |
3806 | goto filtered; | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | /* If the peer is configured for "allowas-in origin" and the last ASN in | |
3811 | * the | |
3812 | * as-path is our ASN then we do not need to call aspath_loop_check | |
3813 | */ | |
3814 | if (CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_ALLOWAS_IN_ORIGIN)) | |
3815 | if (aspath_get_last_as(attr->aspath) == bgp->as) | |
3816 | do_loop_check = 0; | |
3817 | ||
3818 | /* AS path loop check. */ | |
3819 | if (do_loop_check) { | |
3820 | if (aspath_loop_check(attr->aspath, bgp->as) | |
3821 | > peer->allowas_in[afi][safi] | |
3822 | || (CHECK_FLAG(bgp->config, BGP_CONFIG_CONFEDERATION) | |
3823 | && aspath_loop_check(attr->aspath, bgp->confed_id) | |
3824 | > peer->allowas_in[afi][safi])) { | |
3825 | peer->stat_pfx_aspath_loop++; | |
3826 | reason = "as-path contains our own AS;"; | |
3827 | goto filtered; | |
3828 | } | |
3829 | } | |
3830 | ||
3831 | /* Route reflector originator ID check. */ | |
3832 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID) | |
3833 | && IPV4_ADDR_SAME(&bgp->router_id, &attr->originator_id)) { | |
3834 | peer->stat_pfx_originator_loop++; | |
3835 | reason = "originator is us;"; | |
3836 | goto filtered; | |
3837 | } | |
3838 | ||
3839 | /* Route reflector cluster ID check. */ | |
3840 | if (bgp_cluster_filter(peer, attr)) { | |
3841 | peer->stat_pfx_cluster_loop++; | |
3842 | reason = "reflected from the same cluster;"; | |
3843 | goto filtered; | |
3844 | } | |
3845 | ||
3846 | /* Apply incoming filter. */ | |
3847 | if (bgp_input_filter(peer, p, attr, afi, orig_safi) == FILTER_DENY) { | |
3848 | peer->stat_pfx_filter++; | |
3849 | reason = "filter;"; | |
3850 | goto filtered; | |
3851 | } | |
3852 | ||
3853 | /* RFC 8212 to prevent route leaks. | |
3854 | * This specification intends to improve this situation by requiring the | |
3855 | * explicit configuration of both BGP Import and Export Policies for any | |
3856 | * External BGP (EBGP) session such as customers, peers, or | |
3857 | * confederation boundaries for all enabled address families. Through | |
3858 | * codification of the aforementioned requirement, operators will | |
3859 | * benefit from consistent behavior across different BGP | |
3860 | * implementations. | |
3861 | */ | |
3862 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_EBGP_REQUIRES_POLICY)) | |
3863 | if (!bgp_inbound_policy_exists(peer, | |
3864 | &peer->filter[afi][safi])) { | |
3865 | reason = "inbound policy missing"; | |
3866 | if (monotime_since(&bgp->ebgprequirespolicywarning, | |
3867 | NULL) > FIFTEENMINUTE2USEC || | |
3868 | bgp->ebgprequirespolicywarning.tv_sec == 0) { | |
3869 | zlog_warn( | |
3870 | "EBGP inbound/outbound policy not properly setup, please configure in order for your peering to work correctly"); | |
3871 | monotime(&bgp->ebgprequirespolicywarning); | |
3872 | } | |
3873 | goto filtered; | |
3874 | } | |
3875 | ||
3876 | /* draft-ietf-idr-deprecate-as-set-confed-set | |
3877 | * Filter routes having AS_SET or AS_CONFED_SET in the path. | |
3878 | * Eventually, This document (if approved) updates RFC 4271 | |
3879 | * and RFC 5065 by eliminating AS_SET and AS_CONFED_SET types, | |
3880 | * and obsoletes RFC 6472. | |
3881 | */ | |
3882 | if (peer->bgp->reject_as_sets) | |
3883 | if (aspath_check_as_sets(attr->aspath)) { | |
3884 | reason = | |
3885 | "as-path contains AS_SET or AS_CONFED_SET type;"; | |
3886 | goto filtered; | |
3887 | } | |
3888 | ||
3889 | new_attr = *attr; | |
3890 | ||
3891 | /* Apply incoming route-map. | |
3892 | * NB: new_attr may now contain newly allocated values from route-map | |
3893 | * "set" | |
3894 | * commands, so we need bgp_attr_flush in the error paths, until we | |
3895 | * intern | |
3896 | * the attr (which takes over the memory references) */ | |
3897 | if (bgp_input_modifier(peer, p, &new_attr, afi, orig_safi, NULL, label, | |
3898 | num_labels, dest) | |
3899 | == RMAP_DENY) { | |
3900 | peer->stat_pfx_filter++; | |
3901 | reason = "route-map;"; | |
3902 | bgp_attr_flush(&new_attr); | |
3903 | goto filtered; | |
3904 | } | |
3905 | ||
3906 | if (pi && pi->attr->rmap_table_id != new_attr.rmap_table_id) { | |
3907 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
3908 | /* remove from RIB previous entry */ | |
3909 | bgp_zebra_withdraw(p, pi, bgp, safi); | |
3910 | } | |
3911 | ||
3912 | if (peer->sort == BGP_PEER_EBGP) { | |
3913 | ||
3914 | /* rfc7999: | |
3915 | * A BGP speaker receiving an announcement tagged with the | |
3916 | * BLACKHOLE community SHOULD add the NO_ADVERTISE or | |
3917 | * NO_EXPORT community as defined in RFC1997, or a | |
3918 | * similar community, to prevent propagation of the | |
3919 | * prefix outside the local AS. The community to prevent | |
3920 | * propagation SHOULD be chosen according to the operator's | |
3921 | * routing policy. | |
3922 | */ | |
3923 | if (bgp_attr_get_community(&new_attr) && | |
3924 | community_include(bgp_attr_get_community(&new_attr), | |
3925 | COMMUNITY_BLACKHOLE)) | |
3926 | bgp_attr_add_no_export_community(&new_attr); | |
3927 | ||
3928 | /* If we receive the graceful-shutdown community from an eBGP | |
3929 | * peer we must lower local-preference */ | |
3930 | if (bgp_attr_get_community(&new_attr) && | |
3931 | community_include(bgp_attr_get_community(&new_attr), | |
3932 | COMMUNITY_GSHUT)) { | |
3933 | new_attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
3934 | new_attr.local_pref = BGP_GSHUT_LOCAL_PREF; | |
3935 | ||
3936 | /* If graceful-shutdown is configured then add the GSHUT | |
3937 | * community to all paths received from eBGP peers */ | |
3938 | } else if (bgp_in_graceful_shutdown(peer->bgp)) | |
3939 | bgp_attr_add_gshut_community(&new_attr); | |
3940 | } | |
3941 | ||
3942 | if (pi) { | |
3943 | pi_type = pi->type; | |
3944 | pi_sub_type = pi->sub_type; | |
3945 | } | |
3946 | ||
3947 | /* next hop check. */ | |
3948 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_IS_RFAPI_HD) | |
3949 | && bgp_update_martian_nexthop(bgp, afi, safi, pi_type, pi_sub_type, | |
3950 | &new_attr, dest)) { | |
3951 | peer->stat_pfx_nh_invalid++; | |
3952 | reason = "martian or self next-hop;"; | |
3953 | bgp_attr_flush(&new_attr); | |
3954 | goto filtered; | |
3955 | } | |
3956 | ||
3957 | if (bgp_mac_entry_exists(p) || bgp_mac_exist(&attr->rmac)) { | |
3958 | peer->stat_pfx_nh_invalid++; | |
3959 | reason = "self mac;"; | |
3960 | bgp_attr_flush(&new_attr); | |
3961 | goto filtered; | |
3962 | } | |
3963 | ||
3964 | /* The flag BGP_NODE_FIB_INSTALL_PENDING is for the following | |
3965 | * condition : | |
3966 | * Suppress fib is enabled | |
3967 | * BGP_OPT_NO_FIB is not enabled | |
3968 | * Route type is BGP_ROUTE_NORMAL (peer learnt routes) | |
3969 | * Route is being installed first time (BGP_NODE_FIB_INSTALLED not set) | |
3970 | */ | |
3971 | if (bgp_fibupd_safi(safi) && BGP_SUPPRESS_FIB_ENABLED(bgp) | |
3972 | && (sub_type == BGP_ROUTE_NORMAL) | |
3973 | && (!bgp_option_check(BGP_OPT_NO_FIB)) | |
3974 | && (!CHECK_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED))) | |
3975 | SET_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING); | |
3976 | ||
3977 | /* If maximum prefix count is configured and current prefix | |
3978 | * count exeed it. | |
3979 | */ | |
3980 | if (bgp_maximum_prefix_overflow(peer, afi, safi, 0)) { | |
3981 | bgp_attr_flush(&new_attr); | |
3982 | return -1; | |
3983 | } | |
3984 | ||
3985 | attr_new = bgp_attr_intern(&new_attr); | |
3986 | ||
3987 | /* If the update is implicit withdraw. */ | |
3988 | if (pi) { | |
3989 | pi->uptime = bgp_clock(); | |
3990 | same_attr = attrhash_cmp(pi->attr, attr_new); | |
3991 | ||
3992 | hook_call(bgp_process, bgp, afi, safi, dest, peer, true); | |
3993 | ||
3994 | /* Same attribute comes in. */ | |
3995 | if (!CHECK_FLAG(pi->flags, BGP_PATH_REMOVED) | |
3996 | && same_attr | |
3997 | && (!has_valid_label | |
3998 | || memcmp(&(bgp_path_info_extra_get(pi))->label, label, | |
3999 | num_labels * sizeof(mpls_label_t)) | |
4000 | == 0)) { | |
4001 | if (CHECK_FLAG(bgp->af_flags[afi][safi], | |
4002 | BGP_CONFIG_DAMPENING) | |
4003 | && peer->sort == BGP_PEER_EBGP | |
4004 | && CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) { | |
4005 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4006 | bgp_debug_rdpfxpath2str( | |
4007 | afi, safi, prd, p, label, | |
4008 | num_labels, addpath_id ? 1 : 0, | |
4009 | addpath_id, evpn, pfx_buf, | |
4010 | sizeof(pfx_buf)); | |
4011 | zlog_debug("%s rcvd %s", peer->host, | |
4012 | pfx_buf); | |
4013 | } | |
4014 | ||
4015 | if (bgp_damp_update(pi, dest, afi, safi) | |
4016 | != BGP_DAMP_SUPPRESSED) { | |
4017 | bgp_aggregate_increment(bgp, p, pi, afi, | |
4018 | safi); | |
4019 | bgp_process(bgp, dest, afi, safi); | |
4020 | } | |
4021 | } else /* Duplicate - odd */ | |
4022 | { | |
4023 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4024 | if (!peer->rcvd_attr_printed) { | |
4025 | zlog_debug( | |
4026 | "%s rcvd UPDATE w/ attr: %s", | |
4027 | peer->host, | |
4028 | peer->rcvd_attr_str); | |
4029 | peer->rcvd_attr_printed = 1; | |
4030 | } | |
4031 | ||
4032 | bgp_debug_rdpfxpath2str( | |
4033 | afi, safi, prd, p, label, | |
4034 | num_labels, addpath_id ? 1 : 0, | |
4035 | addpath_id, evpn, pfx_buf, | |
4036 | sizeof(pfx_buf)); | |
4037 | zlog_debug( | |
4038 | "%s rcvd %s...duplicate ignored", | |
4039 | peer->host, pfx_buf); | |
4040 | } | |
4041 | ||
4042 | /* graceful restart STALE flag unset. */ | |
4043 | if (CHECK_FLAG(pi->flags, BGP_PATH_STALE)) { | |
4044 | bgp_path_info_unset_flag( | |
4045 | dest, pi, BGP_PATH_STALE); | |
4046 | bgp_dest_set_defer_flag(dest, false); | |
4047 | bgp_process(bgp, dest, afi, safi); | |
4048 | } | |
4049 | } | |
4050 | ||
4051 | bgp_dest_unlock_node(dest); | |
4052 | bgp_attr_unintern(&attr_new); | |
4053 | ||
4054 | return 0; | |
4055 | } | |
4056 | ||
4057 | /* Withdraw/Announce before we fully processed the withdraw */ | |
4058 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
4059 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4060 | bgp_debug_rdpfxpath2str( | |
4061 | afi, safi, prd, p, label, num_labels, | |
4062 | addpath_id ? 1 : 0, addpath_id, evpn, | |
4063 | pfx_buf, sizeof(pfx_buf)); | |
4064 | zlog_debug( | |
4065 | "%s rcvd %s, flapped quicker than processing", | |
4066 | peer->host, pfx_buf); | |
4067 | } | |
4068 | ||
4069 | bgp_path_info_restore(dest, pi); | |
4070 | ||
4071 | /* | |
4072 | * If the BGP_PATH_REMOVED flag is set, then EVPN | |
4073 | * routes would have been unimported already when a | |
4074 | * prior BGP withdraw processing happened. Such routes | |
4075 | * need to be imported again, so flag accordingly. | |
4076 | */ | |
4077 | force_evpn_import = true; | |
4078 | } | |
4079 | ||
4080 | /* Received Logging. */ | |
4081 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4082 | bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, | |
4083 | num_labels, addpath_id ? 1 : 0, | |
4084 | addpath_id, evpn, pfx_buf, | |
4085 | sizeof(pfx_buf)); | |
4086 | zlog_debug("%s rcvd %s", peer->host, pfx_buf); | |
4087 | } | |
4088 | ||
4089 | /* graceful restart STALE flag unset. */ | |
4090 | if (CHECK_FLAG(pi->flags, BGP_PATH_STALE)) { | |
4091 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_STALE); | |
4092 | bgp_dest_set_defer_flag(dest, false); | |
4093 | } | |
4094 | ||
4095 | /* The attribute is changed. */ | |
4096 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
4097 | ||
4098 | /* implicit withdraw, decrement aggregate and pcount here. | |
4099 | * only if update is accepted, they'll increment below. | |
4100 | */ | |
4101 | bgp_aggregate_decrement(bgp, p, pi, afi, safi); | |
4102 | ||
4103 | /* Update bgp route dampening information. */ | |
4104 | if (CHECK_FLAG(bgp->af_flags[afi][safi], BGP_CONFIG_DAMPENING) | |
4105 | && peer->sort == BGP_PEER_EBGP) { | |
4106 | /* This is implicit withdraw so we should update | |
4107 | dampening | |
4108 | information. */ | |
4109 | if (!CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) | |
4110 | bgp_damp_withdraw(pi, dest, afi, safi, 1); | |
4111 | } | |
4112 | #ifdef ENABLE_BGP_VNC | |
4113 | if (safi == SAFI_MPLS_VPN) { | |
4114 | struct bgp_dest *pdest = NULL; | |
4115 | struct bgp_table *table = NULL; | |
4116 | ||
4117 | pdest = bgp_node_get(bgp->rib[afi][safi], | |
4118 | (struct prefix *)prd); | |
4119 | if (bgp_dest_has_bgp_path_info_data(pdest)) { | |
4120 | table = bgp_dest_get_bgp_table_info(pdest); | |
4121 | ||
4122 | vnc_import_bgp_del_vnc_host_route_mode_resolve_nve( | |
4123 | bgp, prd, table, p, pi); | |
4124 | } | |
4125 | bgp_dest_unlock_node(pdest); | |
4126 | } | |
4127 | if ((afi == AFI_IP || afi == AFI_IP6) | |
4128 | && (safi == SAFI_UNICAST)) { | |
4129 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
4130 | /* | |
4131 | * Implicit withdraw case. | |
4132 | */ | |
4133 | ++vnc_implicit_withdraw; | |
4134 | vnc_import_bgp_del_route(bgp, p, pi); | |
4135 | vnc_import_bgp_exterior_del_route(bgp, p, pi); | |
4136 | } | |
4137 | } | |
4138 | #endif | |
4139 | ||
4140 | /* Special handling for EVPN update of an existing route. If the | |
4141 | * extended community attribute has changed, we need to | |
4142 | * un-import | |
4143 | * the route using its existing extended community. It will be | |
4144 | * subsequently processed for import with the new extended | |
4145 | * community. | |
4146 | */ | |
4147 | if (((safi == SAFI_EVPN) || (safi == SAFI_MPLS_VPN)) | |
4148 | && !same_attr) { | |
4149 | if ((pi->attr->flag | |
4150 | & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)) | |
4151 | && (attr_new->flag | |
4152 | & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) { | |
4153 | int cmp; | |
4154 | ||
4155 | cmp = ecommunity_cmp( | |
4156 | bgp_attr_get_ecommunity(pi->attr), | |
4157 | bgp_attr_get_ecommunity(attr_new)); | |
4158 | if (!cmp) { | |
4159 | if (bgp_debug_update(peer, p, NULL, 1)) | |
4160 | zlog_debug( | |
4161 | "Change in EXT-COMM, existing %s new %s", | |
4162 | ecommunity_str( | |
4163 | bgp_attr_get_ecommunity( | |
4164 | pi->attr)), | |
4165 | ecommunity_str( | |
4166 | bgp_attr_get_ecommunity( | |
4167 | attr_new))); | |
4168 | if (safi == SAFI_EVPN) | |
4169 | bgp_evpn_unimport_route( | |
4170 | bgp, afi, safi, p, pi); | |
4171 | else /* SAFI_MPLS_VPN */ | |
4172 | vpn_leak_to_vrf_withdraw(bgp, | |
4173 | pi); | |
4174 | } | |
4175 | } | |
4176 | } | |
4177 | ||
4178 | /* Update to new attribute. */ | |
4179 | bgp_attr_unintern(&pi->attr); | |
4180 | pi->attr = attr_new; | |
4181 | ||
4182 | /* Update MPLS label */ | |
4183 | if (has_valid_label) { | |
4184 | extra = bgp_path_info_extra_get(pi); | |
4185 | if (extra->label != label) { | |
4186 | memcpy(&extra->label, label, | |
4187 | num_labels * sizeof(mpls_label_t)); | |
4188 | extra->num_labels = num_labels; | |
4189 | } | |
4190 | if (!(afi == AFI_L2VPN && safi == SAFI_EVPN)) | |
4191 | bgp_set_valid_label(&extra->label[0]); | |
4192 | } | |
4193 | ||
4194 | /* Update SRv6 SID */ | |
4195 | if (attr->srv6_l3vpn) { | |
4196 | extra = bgp_path_info_extra_get(pi); | |
4197 | if (sid_diff(&extra->sid[0].sid, | |
4198 | &attr->srv6_l3vpn->sid)) { | |
4199 | sid_copy(&extra->sid[0].sid, | |
4200 | &attr->srv6_l3vpn->sid); | |
4201 | extra->num_sids = 1; | |
4202 | ||
4203 | extra->sid[0].loc_block_len = 0; | |
4204 | extra->sid[0].loc_node_len = 0; | |
4205 | extra->sid[0].func_len = 0; | |
4206 | extra->sid[0].arg_len = 0; | |
4207 | extra->sid[0].transposition_len = 0; | |
4208 | extra->sid[0].transposition_offset = 0; | |
4209 | ||
4210 | if (attr->srv6_l3vpn->loc_block_len != 0) { | |
4211 | extra->sid[0].loc_block_len = | |
4212 | attr->srv6_l3vpn->loc_block_len; | |
4213 | extra->sid[0].loc_node_len = | |
4214 | attr->srv6_l3vpn->loc_node_len; | |
4215 | extra->sid[0].func_len = | |
4216 | attr->srv6_l3vpn->func_len; | |
4217 | extra->sid[0].arg_len = | |
4218 | attr->srv6_l3vpn->arg_len; | |
4219 | extra->sid[0].transposition_len = | |
4220 | attr->srv6_l3vpn | |
4221 | ->transposition_len; | |
4222 | extra->sid[0].transposition_offset = | |
4223 | attr->srv6_l3vpn | |
4224 | ->transposition_offset; | |
4225 | } | |
4226 | } | |
4227 | } else if (attr->srv6_vpn) { | |
4228 | extra = bgp_path_info_extra_get(pi); | |
4229 | if (sid_diff(&extra->sid[0].sid, | |
4230 | &attr->srv6_vpn->sid)) { | |
4231 | sid_copy(&extra->sid[0].sid, | |
4232 | &attr->srv6_vpn->sid); | |
4233 | extra->num_sids = 1; | |
4234 | } | |
4235 | } | |
4236 | ||
4237 | #ifdef ENABLE_BGP_VNC | |
4238 | if ((afi == AFI_IP || afi == AFI_IP6) | |
4239 | && (safi == SAFI_UNICAST)) { | |
4240 | if (vnc_implicit_withdraw) { | |
4241 | /* | |
4242 | * Add back the route with its new attributes | |
4243 | * (e.g., nexthop). | |
4244 | * The route is still selected, until the route | |
4245 | * selection | |
4246 | * queued by bgp_process actually runs. We have | |
4247 | * to make this | |
4248 | * update to the VNC side immediately to avoid | |
4249 | * racing against | |
4250 | * configuration changes (e.g., route-map | |
4251 | * changes) which | |
4252 | * trigger re-importation of the entire RIB. | |
4253 | */ | |
4254 | vnc_import_bgp_add_route(bgp, p, pi); | |
4255 | vnc_import_bgp_exterior_add_route(bgp, p, pi); | |
4256 | } | |
4257 | } | |
4258 | #endif | |
4259 | ||
4260 | /* Update bgp route dampening information. */ | |
4261 | if (CHECK_FLAG(bgp->af_flags[afi][safi], BGP_CONFIG_DAMPENING) | |
4262 | && peer->sort == BGP_PEER_EBGP) { | |
4263 | /* Now we do normal update dampening. */ | |
4264 | ret = bgp_damp_update(pi, dest, afi, safi); | |
4265 | if (ret == BGP_DAMP_SUPPRESSED) { | |
4266 | bgp_dest_unlock_node(dest); | |
4267 | return 0; | |
4268 | } | |
4269 | } | |
4270 | ||
4271 | /* Nexthop reachability check - for unicast and | |
4272 | * labeled-unicast.. */ | |
4273 | if (((afi == AFI_IP || afi == AFI_IP6) | |
4274 | && (safi == SAFI_UNICAST || safi == SAFI_LABELED_UNICAST)) | |
4275 | || (safi == SAFI_EVPN && | |
4276 | bgp_evpn_is_prefix_nht_supported(p))) { | |
4277 | if (safi != SAFI_EVPN && peer->sort == BGP_PEER_EBGP | |
4278 | && peer->ttl == BGP_DEFAULT_TTL | |
4279 | && !CHECK_FLAG(peer->flags, | |
4280 | PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
4281 | && !CHECK_FLAG(bgp->flags, | |
4282 | BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
4283 | connected = 1; | |
4284 | else | |
4285 | connected = 0; | |
4286 | ||
4287 | struct bgp *bgp_nexthop = bgp; | |
4288 | ||
4289 | if (pi->extra && pi->extra->bgp_orig) | |
4290 | bgp_nexthop = pi->extra->bgp_orig; | |
4291 | ||
4292 | nh_afi = BGP_ATTR_NH_AFI(afi, pi->attr); | |
4293 | ||
4294 | if (bgp_find_or_add_nexthop(bgp, bgp_nexthop, nh_afi, | |
4295 | safi, pi, NULL, connected, | |
4296 | p) | |
4297 | || CHECK_FLAG(peer->flags, PEER_FLAG_IS_RFAPI_HD)) | |
4298 | bgp_path_info_set_flag(dest, pi, | |
4299 | BGP_PATH_VALID); | |
4300 | else { | |
4301 | if (BGP_DEBUG(nht, NHT)) { | |
4302 | zlog_debug("%s(%pI4): NH unresolved", | |
4303 | __func__, | |
4304 | (in_addr_t *)&attr_new->nexthop); | |
4305 | } | |
4306 | bgp_path_info_unset_flag(dest, pi, | |
4307 | BGP_PATH_VALID); | |
4308 | } | |
4309 | } else | |
4310 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); | |
4311 | ||
4312 | #ifdef ENABLE_BGP_VNC | |
4313 | if (safi == SAFI_MPLS_VPN) { | |
4314 | struct bgp_dest *pdest = NULL; | |
4315 | struct bgp_table *table = NULL; | |
4316 | ||
4317 | pdest = bgp_node_get(bgp->rib[afi][safi], | |
4318 | (struct prefix *)prd); | |
4319 | if (bgp_dest_has_bgp_path_info_data(pdest)) { | |
4320 | table = bgp_dest_get_bgp_table_info(pdest); | |
4321 | ||
4322 | vnc_import_bgp_add_vnc_host_route_mode_resolve_nve( | |
4323 | bgp, prd, table, p, pi); | |
4324 | } | |
4325 | bgp_dest_unlock_node(pdest); | |
4326 | } | |
4327 | #endif | |
4328 | ||
4329 | /* If this is an EVPN route and some attribute has changed, | |
4330 | * or we are explicitly told to perform a route import, process | |
4331 | * route for import. If the extended community has changed, we | |
4332 | * would | |
4333 | * have done the un-import earlier and the import would result | |
4334 | * in the | |
4335 | * route getting injected into appropriate L2 VNIs. If it is | |
4336 | * just | |
4337 | * some other attribute change, the import will result in | |
4338 | * updating | |
4339 | * the attributes for the route in the VNI(s). | |
4340 | */ | |
4341 | if (safi == SAFI_EVPN && | |
4342 | (!same_attr || force_evpn_import) && | |
4343 | CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
4344 | bgp_evpn_import_route(bgp, afi, safi, p, pi); | |
4345 | ||
4346 | /* Process change. */ | |
4347 | bgp_aggregate_increment(bgp, p, pi, afi, safi); | |
4348 | ||
4349 | bgp_process(bgp, dest, afi, safi); | |
4350 | bgp_dest_unlock_node(dest); | |
4351 | ||
4352 | if (SAFI_UNICAST == safi | |
4353 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
4354 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4355 | ||
4356 | vpn_leak_from_vrf_update(bgp_get_default(), bgp, pi); | |
4357 | } | |
4358 | if ((SAFI_MPLS_VPN == safi) | |
4359 | && (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4360 | ||
4361 | vpn_leak_to_vrf_update(bgp, pi); | |
4362 | } | |
4363 | ||
4364 | #ifdef ENABLE_BGP_VNC | |
4365 | if (SAFI_MPLS_VPN == safi) { | |
4366 | mpls_label_t label_decoded = decode_label(label); | |
4367 | ||
4368 | rfapiProcessUpdate(peer, NULL, p, prd, attr, afi, safi, | |
4369 | type, sub_type, &label_decoded); | |
4370 | } | |
4371 | if (SAFI_ENCAP == safi) { | |
4372 | rfapiProcessUpdate(peer, NULL, p, prd, attr, afi, safi, | |
4373 | type, sub_type, NULL); | |
4374 | } | |
4375 | #endif | |
4376 | ||
4377 | return 0; | |
4378 | } // End of implicit withdraw | |
4379 | ||
4380 | /* Received Logging. */ | |
4381 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4382 | if (!peer->rcvd_attr_printed) { | |
4383 | zlog_debug("%s rcvd UPDATE w/ attr: %s", peer->host, | |
4384 | peer->rcvd_attr_str); | |
4385 | peer->rcvd_attr_printed = 1; | |
4386 | } | |
4387 | ||
4388 | bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, num_labels, | |
4389 | addpath_id ? 1 : 0, addpath_id, evpn, | |
4390 | pfx_buf, sizeof(pfx_buf)); | |
4391 | zlog_debug("%s rcvd %s", peer->host, pfx_buf); | |
4392 | } | |
4393 | ||
4394 | /* Make new BGP info. */ | |
4395 | new = info_make(type, sub_type, 0, peer, attr_new, dest); | |
4396 | ||
4397 | /* Update MPLS label */ | |
4398 | if (has_valid_label) { | |
4399 | extra = bgp_path_info_extra_get(new); | |
4400 | if (extra->label != label) { | |
4401 | memcpy(&extra->label, label, | |
4402 | num_labels * sizeof(mpls_label_t)); | |
4403 | extra->num_labels = num_labels; | |
4404 | } | |
4405 | if (!(afi == AFI_L2VPN && safi == SAFI_EVPN)) | |
4406 | bgp_set_valid_label(&extra->label[0]); | |
4407 | } | |
4408 | ||
4409 | /* Update SRv6 SID */ | |
4410 | if (safi == SAFI_MPLS_VPN) { | |
4411 | extra = bgp_path_info_extra_get(new); | |
4412 | if (attr->srv6_l3vpn) { | |
4413 | sid_copy(&extra->sid[0].sid, &attr->srv6_l3vpn->sid); | |
4414 | extra->num_sids = 1; | |
4415 | ||
4416 | extra->sid[0].loc_block_len = | |
4417 | attr->srv6_l3vpn->loc_block_len; | |
4418 | extra->sid[0].loc_node_len = | |
4419 | attr->srv6_l3vpn->loc_node_len; | |
4420 | extra->sid[0].func_len = attr->srv6_l3vpn->func_len; | |
4421 | extra->sid[0].arg_len = attr->srv6_l3vpn->arg_len; | |
4422 | extra->sid[0].transposition_len = | |
4423 | attr->srv6_l3vpn->transposition_len; | |
4424 | extra->sid[0].transposition_offset = | |
4425 | attr->srv6_l3vpn->transposition_offset; | |
4426 | } else if (attr->srv6_vpn) { | |
4427 | sid_copy(&extra->sid[0].sid, &attr->srv6_vpn->sid); | |
4428 | extra->num_sids = 1; | |
4429 | } | |
4430 | } | |
4431 | ||
4432 | /* Nexthop reachability check. */ | |
4433 | if (((afi == AFI_IP || afi == AFI_IP6) | |
4434 | && (safi == SAFI_UNICAST || safi == SAFI_LABELED_UNICAST)) | |
4435 | || (safi == SAFI_EVPN && bgp_evpn_is_prefix_nht_supported(p))) { | |
4436 | if (safi != SAFI_EVPN && peer->sort == BGP_PEER_EBGP | |
4437 | && peer->ttl == BGP_DEFAULT_TTL | |
4438 | && !CHECK_FLAG(peer->flags, | |
4439 | PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
4440 | && !CHECK_FLAG(bgp->flags, | |
4441 | BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
4442 | connected = 1; | |
4443 | else | |
4444 | connected = 0; | |
4445 | ||
4446 | nh_afi = BGP_ATTR_NH_AFI(afi, new->attr); | |
4447 | ||
4448 | if (bgp_find_or_add_nexthop(bgp, bgp, nh_afi, safi, new, NULL, | |
4449 | connected, p) | |
4450 | || CHECK_FLAG(peer->flags, PEER_FLAG_IS_RFAPI_HD)) | |
4451 | bgp_path_info_set_flag(dest, new, BGP_PATH_VALID); | |
4452 | else { | |
4453 | if (BGP_DEBUG(nht, NHT)) { | |
4454 | char buf1[INET6_ADDRSTRLEN]; | |
4455 | inet_ntop(AF_INET, | |
4456 | (const void *)&attr_new->nexthop, | |
4457 | buf1, INET6_ADDRSTRLEN); | |
4458 | zlog_debug("%s(%s): NH unresolved", __func__, | |
4459 | buf1); | |
4460 | } | |
4461 | bgp_path_info_unset_flag(dest, new, BGP_PATH_VALID); | |
4462 | } | |
4463 | } else | |
4464 | bgp_path_info_set_flag(dest, new, BGP_PATH_VALID); | |
4465 | ||
4466 | /* Addpath ID */ | |
4467 | new->addpath_rx_id = addpath_id; | |
4468 | ||
4469 | /* Increment prefix */ | |
4470 | bgp_aggregate_increment(bgp, p, new, afi, safi); | |
4471 | ||
4472 | /* Register new BGP information. */ | |
4473 | bgp_path_info_add(dest, new); | |
4474 | ||
4475 | /* route_node_get lock */ | |
4476 | bgp_dest_unlock_node(dest); | |
4477 | ||
4478 | #ifdef ENABLE_BGP_VNC | |
4479 | if (safi == SAFI_MPLS_VPN) { | |
4480 | struct bgp_dest *pdest = NULL; | |
4481 | struct bgp_table *table = NULL; | |
4482 | ||
4483 | pdest = bgp_node_get(bgp->rib[afi][safi], (struct prefix *)prd); | |
4484 | if (bgp_dest_has_bgp_path_info_data(pdest)) { | |
4485 | table = bgp_dest_get_bgp_table_info(pdest); | |
4486 | ||
4487 | vnc_import_bgp_add_vnc_host_route_mode_resolve_nve( | |
4488 | bgp, prd, table, p, new); | |
4489 | } | |
4490 | bgp_dest_unlock_node(pdest); | |
4491 | } | |
4492 | #endif | |
4493 | ||
4494 | /* If this is an EVPN route, process for import. */ | |
4495 | if (safi == SAFI_EVPN && CHECK_FLAG(new->flags, BGP_PATH_VALID)) | |
4496 | bgp_evpn_import_route(bgp, afi, safi, p, new); | |
4497 | ||
4498 | hook_call(bgp_process, bgp, afi, safi, dest, peer, false); | |
4499 | ||
4500 | /* Process change. */ | |
4501 | bgp_process(bgp, dest, afi, safi); | |
4502 | ||
4503 | if (SAFI_UNICAST == safi | |
4504 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
4505 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4506 | vpn_leak_from_vrf_update(bgp_get_default(), bgp, new); | |
4507 | } | |
4508 | if ((SAFI_MPLS_VPN == safi) | |
4509 | && (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4510 | ||
4511 | vpn_leak_to_vrf_update(bgp, new); | |
4512 | } | |
4513 | #ifdef ENABLE_BGP_VNC | |
4514 | if (SAFI_MPLS_VPN == safi) { | |
4515 | mpls_label_t label_decoded = decode_label(label); | |
4516 | ||
4517 | rfapiProcessUpdate(peer, NULL, p, prd, attr, afi, safi, type, | |
4518 | sub_type, &label_decoded); | |
4519 | } | |
4520 | if (SAFI_ENCAP == safi) { | |
4521 | rfapiProcessUpdate(peer, NULL, p, prd, attr, afi, safi, type, | |
4522 | sub_type, NULL); | |
4523 | } | |
4524 | #endif | |
4525 | ||
4526 | return 0; | |
4527 | ||
4528 | /* This BGP update is filtered. Log the reason then update BGP | |
4529 | entry. */ | |
4530 | filtered: | |
4531 | hook_call(bgp_process, bgp, afi, safi, dest, peer, true); | |
4532 | ||
4533 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4534 | if (!peer->rcvd_attr_printed) { | |
4535 | zlog_debug("%s rcvd UPDATE w/ attr: %s", peer->host, | |
4536 | peer->rcvd_attr_str); | |
4537 | peer->rcvd_attr_printed = 1; | |
4538 | } | |
4539 | ||
4540 | bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, num_labels, | |
4541 | addpath_id ? 1 : 0, addpath_id, evpn, | |
4542 | pfx_buf, sizeof(pfx_buf)); | |
4543 | zlog_debug("%s rcvd UPDATE about %s -- DENIED due to: %s", | |
4544 | peer->host, pfx_buf, reason); | |
4545 | } | |
4546 | ||
4547 | if (pi) { | |
4548 | /* If this is an EVPN route, un-import it as it is now filtered. | |
4549 | */ | |
4550 | if (safi == SAFI_EVPN) | |
4551 | bgp_evpn_unimport_route(bgp, afi, safi, p, pi); | |
4552 | ||
4553 | if (SAFI_UNICAST == safi | |
4554 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
4555 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4556 | ||
4557 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp, pi); | |
4558 | } | |
4559 | if ((SAFI_MPLS_VPN == safi) | |
4560 | && (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4561 | ||
4562 | vpn_leak_to_vrf_withdraw(bgp, pi); | |
4563 | } | |
4564 | ||
4565 | bgp_rib_remove(dest, pi, peer, afi, safi); | |
4566 | } | |
4567 | ||
4568 | bgp_dest_unlock_node(dest); | |
4569 | ||
4570 | #ifdef ENABLE_BGP_VNC | |
4571 | /* | |
4572 | * Filtered update is treated as an implicit withdrawal (see | |
4573 | * bgp_rib_remove() | |
4574 | * a few lines above) | |
4575 | */ | |
4576 | if ((SAFI_MPLS_VPN == safi) || (SAFI_ENCAP == safi)) { | |
4577 | rfapiProcessWithdraw(peer, NULL, p, prd, NULL, afi, safi, type, | |
4578 | 0); | |
4579 | } | |
4580 | #endif | |
4581 | ||
4582 | return 0; | |
4583 | } | |
4584 | ||
4585 | int bgp_withdraw(struct peer *peer, const struct prefix *p, uint32_t addpath_id, | |
4586 | struct attr *attr, afi_t afi, safi_t safi, int type, | |
4587 | int sub_type, struct prefix_rd *prd, mpls_label_t *label, | |
4588 | uint32_t num_labels, struct bgp_route_evpn *evpn) | |
4589 | { | |
4590 | struct bgp *bgp; | |
4591 | char pfx_buf[BGP_PRD_PATH_STRLEN]; | |
4592 | struct bgp_dest *dest; | |
4593 | struct bgp_path_info *pi; | |
4594 | ||
4595 | #ifdef ENABLE_BGP_VNC | |
4596 | if ((SAFI_MPLS_VPN == safi) || (SAFI_ENCAP == safi)) { | |
4597 | rfapiProcessWithdraw(peer, NULL, p, prd, NULL, afi, safi, type, | |
4598 | 0); | |
4599 | } | |
4600 | #endif | |
4601 | ||
4602 | bgp = peer->bgp; | |
4603 | ||
4604 | /* Lookup node. */ | |
4605 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, prd); | |
4606 | ||
4607 | /* If peer is soft reconfiguration enabled. Record input packet for | |
4608 | * further calculation. | |
4609 | * | |
4610 | * Cisco IOS 12.4(24)T4 on session establishment sends withdraws for all | |
4611 | * routes that are filtered. This tanks out Quagga RS pretty badly due | |
4612 | * to | |
4613 | * the iteration over all RS clients. | |
4614 | * Since we need to remove the entry from adj_in anyway, do that first | |
4615 | * and | |
4616 | * if there was no entry, we don't need to do anything more. | |
4617 | */ | |
4618 | if (CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_SOFT_RECONFIG) | |
4619 | && peer != bgp->peer_self) | |
4620 | if (!bgp_adj_in_unset(dest, peer, addpath_id)) { | |
4621 | peer->stat_pfx_dup_withdraw++; | |
4622 | ||
4623 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4624 | bgp_debug_rdpfxpath2str( | |
4625 | afi, safi, prd, p, label, num_labels, | |
4626 | addpath_id ? 1 : 0, addpath_id, NULL, | |
4627 | pfx_buf, sizeof(pfx_buf)); | |
4628 | zlog_debug( | |
4629 | "%s withdrawing route %s not in adj-in", | |
4630 | peer->host, pfx_buf); | |
4631 | } | |
4632 | bgp_dest_unlock_node(dest); | |
4633 | return 0; | |
4634 | } | |
4635 | ||
4636 | /* Lookup withdrawn route. */ | |
4637 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4638 | if (pi->peer == peer && pi->type == type | |
4639 | && pi->sub_type == sub_type | |
4640 | && pi->addpath_rx_id == addpath_id) | |
4641 | break; | |
4642 | ||
4643 | /* Logging. */ | |
4644 | if (bgp_debug_update(peer, p, NULL, 1)) { | |
4645 | bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, num_labels, | |
4646 | addpath_id ? 1 : 0, addpath_id, NULL, | |
4647 | pfx_buf, sizeof(pfx_buf)); | |
4648 | zlog_debug("%s rcvd UPDATE about %s -- withdrawn", peer->host, | |
4649 | pfx_buf); | |
4650 | } | |
4651 | ||
4652 | /* Withdraw specified route from routing table. */ | |
4653 | if (pi && !CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) { | |
4654 | bgp_rib_withdraw(dest, pi, peer, afi, safi, prd); | |
4655 | if (SAFI_UNICAST == safi | |
4656 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
4657 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4658 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp, pi); | |
4659 | } | |
4660 | if ((SAFI_MPLS_VPN == safi) | |
4661 | && (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
4662 | ||
4663 | vpn_leak_to_vrf_withdraw(bgp, pi); | |
4664 | } | |
4665 | } else if (bgp_debug_update(peer, p, NULL, 1)) { | |
4666 | bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, num_labels, | |
4667 | addpath_id ? 1 : 0, addpath_id, NULL, | |
4668 | pfx_buf, sizeof(pfx_buf)); | |
4669 | zlog_debug("%s Can't find the route %s", peer->host, pfx_buf); | |
4670 | } | |
4671 | ||
4672 | /* Unlock bgp_node_get() lock. */ | |
4673 | bgp_dest_unlock_node(dest); | |
4674 | ||
4675 | return 0; | |
4676 | } | |
4677 | ||
4678 | void bgp_default_originate(struct peer *peer, afi_t afi, safi_t safi, | |
4679 | int withdraw) | |
4680 | { | |
4681 | struct update_subgroup *subgrp; | |
4682 | subgrp = peer_subgroup(peer, afi, safi); | |
4683 | subgroup_default_originate(subgrp, withdraw); | |
4684 | } | |
4685 | ||
4686 | ||
4687 | /* | |
4688 | * bgp_stop_announce_route_timer | |
4689 | */ | |
4690 | void bgp_stop_announce_route_timer(struct peer_af *paf) | |
4691 | { | |
4692 | if (!paf->t_announce_route) | |
4693 | return; | |
4694 | ||
4695 | thread_cancel(&paf->t_announce_route); | |
4696 | } | |
4697 | ||
4698 | /* | |
4699 | * bgp_announce_route_timer_expired | |
4700 | * | |
4701 | * Callback that is invoked when the route announcement timer for a | |
4702 | * peer_af expires. | |
4703 | */ | |
4704 | static void bgp_announce_route_timer_expired(struct thread *t) | |
4705 | { | |
4706 | struct peer_af *paf; | |
4707 | struct peer *peer; | |
4708 | ||
4709 | paf = THREAD_ARG(t); | |
4710 | peer = paf->peer; | |
4711 | ||
4712 | if (!peer_established(peer)) | |
4713 | return; | |
4714 | ||
4715 | if (!peer->afc_nego[paf->afi][paf->safi]) | |
4716 | return; | |
4717 | ||
4718 | peer_af_announce_route(paf, 1); | |
4719 | ||
4720 | /* Notify BGP conditional advertisement scanner percess */ | |
4721 | peer->advmap_config_change[paf->afi][paf->safi] = true; | |
4722 | } | |
4723 | ||
4724 | /* | |
4725 | * bgp_announce_route | |
4726 | * | |
4727 | * *Triggers* announcement of routes of a given AFI/SAFI to a peer. | |
4728 | * | |
4729 | * if force is true we will force an update even if the update | |
4730 | * limiting code is attempted to kick in. | |
4731 | */ | |
4732 | void bgp_announce_route(struct peer *peer, afi_t afi, safi_t safi, bool force) | |
4733 | { | |
4734 | struct peer_af *paf; | |
4735 | struct update_subgroup *subgrp; | |
4736 | ||
4737 | paf = peer_af_find(peer, afi, safi); | |
4738 | if (!paf) | |
4739 | return; | |
4740 | subgrp = PAF_SUBGRP(paf); | |
4741 | ||
4742 | /* | |
4743 | * Ignore if subgroup doesn't exist (implies AF is not negotiated) | |
4744 | * or a refresh has already been triggered. | |
4745 | */ | |
4746 | if (!subgrp || paf->t_announce_route) | |
4747 | return; | |
4748 | ||
4749 | if (force) | |
4750 | SET_FLAG(subgrp->sflags, SUBGRP_STATUS_FORCE_UPDATES); | |
4751 | ||
4752 | /* | |
4753 | * Start a timer to stagger/delay the announce. This serves | |
4754 | * two purposes - announcement can potentially be combined for | |
4755 | * multiple peers and the announcement doesn't happen in the | |
4756 | * vty context. | |
4757 | */ | |
4758 | thread_add_timer_msec(bm->master, bgp_announce_route_timer_expired, paf, | |
4759 | (subgrp->peer_count == 1) | |
4760 | ? BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS | |
4761 | : BGP_ANNOUNCE_ROUTE_DELAY_MS, | |
4762 | &paf->t_announce_route); | |
4763 | } | |
4764 | ||
4765 | /* | |
4766 | * Announce routes from all AF tables to a peer. | |
4767 | * | |
4768 | * This should ONLY be called when there is a need to refresh the | |
4769 | * routes to the peer based on a policy change for this peer alone | |
4770 | * or a route refresh request received from the peer. | |
4771 | * The operation will result in splitting the peer from its existing | |
4772 | * subgroups and putting it in new subgroups. | |
4773 | */ | |
4774 | void bgp_announce_route_all(struct peer *peer) | |
4775 | { | |
4776 | afi_t afi; | |
4777 | safi_t safi; | |
4778 | ||
4779 | FOREACH_AFI_SAFI (afi, safi) | |
4780 | bgp_announce_route(peer, afi, safi, false); | |
4781 | } | |
4782 | ||
4783 | /* Flag or unflag bgp_dest to determine whether it should be treated by | |
4784 | * bgp_soft_reconfig_table_task. | |
4785 | * Flag if flag is true. Unflag if flag is false. | |
4786 | */ | |
4787 | static void bgp_soft_reconfig_table_flag(struct bgp_table *table, bool flag) | |
4788 | { | |
4789 | struct bgp_dest *dest; | |
4790 | struct bgp_adj_in *ain; | |
4791 | ||
4792 | if (!table) | |
4793 | return; | |
4794 | ||
4795 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
4796 | for (ain = dest->adj_in; ain; ain = ain->next) { | |
4797 | if (ain->peer != NULL) | |
4798 | break; | |
4799 | } | |
4800 | if (flag && ain != NULL && ain->peer != NULL) | |
4801 | SET_FLAG(dest->flags, BGP_NODE_SOFT_RECONFIG); | |
4802 | else | |
4803 | UNSET_FLAG(dest->flags, BGP_NODE_SOFT_RECONFIG); | |
4804 | } | |
4805 | } | |
4806 | ||
4807 | static int bgp_soft_reconfig_table_update(struct peer *peer, | |
4808 | struct bgp_dest *dest, | |
4809 | struct bgp_adj_in *ain, afi_t afi, | |
4810 | safi_t safi, struct prefix_rd *prd) | |
4811 | { | |
4812 | struct bgp_path_info *pi; | |
4813 | uint32_t num_labels = 0; | |
4814 | mpls_label_t *label_pnt = NULL; | |
4815 | struct bgp_route_evpn evpn; | |
4816 | ||
4817 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4818 | if (pi->peer == peer) | |
4819 | break; | |
4820 | ||
4821 | if (pi && pi->extra) | |
4822 | num_labels = pi->extra->num_labels; | |
4823 | if (num_labels) | |
4824 | label_pnt = &pi->extra->label[0]; | |
4825 | if (pi) | |
4826 | memcpy(&evpn, bgp_attr_get_evpn_overlay(pi->attr), | |
4827 | sizeof(evpn)); | |
4828 | else | |
4829 | memset(&evpn, 0, sizeof(evpn)); | |
4830 | ||
4831 | return bgp_update(peer, bgp_dest_get_prefix(dest), ain->addpath_rx_id, | |
4832 | ain->attr, afi, safi, ZEBRA_ROUTE_BGP, | |
4833 | BGP_ROUTE_NORMAL, prd, label_pnt, num_labels, 1, | |
4834 | &evpn); | |
4835 | } | |
4836 | ||
4837 | static void bgp_soft_reconfig_table(struct peer *peer, afi_t afi, safi_t safi, | |
4838 | struct bgp_table *table, | |
4839 | struct prefix_rd *prd) | |
4840 | { | |
4841 | int ret; | |
4842 | struct bgp_dest *dest; | |
4843 | struct bgp_adj_in *ain; | |
4844 | ||
4845 | if (!table) | |
4846 | table = peer->bgp->rib[afi][safi]; | |
4847 | ||
4848 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) | |
4849 | for (ain = dest->adj_in; ain; ain = ain->next) { | |
4850 | if (ain->peer != peer) | |
4851 | continue; | |
4852 | ||
4853 | ret = bgp_soft_reconfig_table_update(peer, dest, ain, | |
4854 | afi, safi, prd); | |
4855 | ||
4856 | if (ret < 0) { | |
4857 | bgp_dest_unlock_node(dest); | |
4858 | return; | |
4859 | } | |
4860 | } | |
4861 | } | |
4862 | ||
4863 | /* Do soft reconfig table per bgp table. | |
4864 | * Walk on SOFT_RECONFIG_TASK_MAX_PREFIX bgp_dest, | |
4865 | * when BGP_NODE_SOFT_RECONFIG is set, | |
4866 | * reconfig bgp_dest for list of table->soft_reconfig_peers peers. | |
4867 | * Schedule a new thread to continue the job. | |
4868 | * Without splitting the full job into several part, | |
4869 | * vtysh waits for the job to finish before responding to a BGP command | |
4870 | */ | |
4871 | static void bgp_soft_reconfig_table_task(struct thread *thread) | |
4872 | { | |
4873 | uint32_t iter, max_iter; | |
4874 | int ret; | |
4875 | struct bgp_dest *dest; | |
4876 | struct bgp_adj_in *ain; | |
4877 | struct peer *peer; | |
4878 | struct bgp_table *table; | |
4879 | struct prefix_rd *prd; | |
4880 | struct listnode *node, *nnode; | |
4881 | ||
4882 | table = THREAD_ARG(thread); | |
4883 | prd = NULL; | |
4884 | ||
4885 | max_iter = SOFT_RECONFIG_TASK_MAX_PREFIX; | |
4886 | if (table->soft_reconfig_init) { | |
4887 | /* first call of the function with a new srta structure. | |
4888 | * Don't do any treatment this time on nodes | |
4889 | * in order vtysh to respond quickly | |
4890 | */ | |
4891 | max_iter = 0; | |
4892 | } | |
4893 | ||
4894 | for (iter = 0, dest = bgp_table_top(table); (dest && iter < max_iter); | |
4895 | dest = bgp_route_next(dest)) { | |
4896 | if (!CHECK_FLAG(dest->flags, BGP_NODE_SOFT_RECONFIG)) | |
4897 | continue; | |
4898 | ||
4899 | UNSET_FLAG(dest->flags, BGP_NODE_SOFT_RECONFIG); | |
4900 | ||
4901 | for (ain = dest->adj_in; ain; ain = ain->next) { | |
4902 | for (ALL_LIST_ELEMENTS(table->soft_reconfig_peers, node, | |
4903 | nnode, peer)) { | |
4904 | if (ain->peer != peer) | |
4905 | continue; | |
4906 | ||
4907 | ret = bgp_soft_reconfig_table_update( | |
4908 | peer, dest, ain, table->afi, | |
4909 | table->safi, prd); | |
4910 | iter++; | |
4911 | ||
4912 | if (ret < 0) { | |
4913 | bgp_dest_unlock_node(dest); | |
4914 | listnode_delete( | |
4915 | table->soft_reconfig_peers, | |
4916 | peer); | |
4917 | bgp_announce_route(peer, table->afi, | |
4918 | table->safi, false); | |
4919 | if (list_isempty( | |
4920 | table->soft_reconfig_peers)) { | |
4921 | list_delete( | |
4922 | &table->soft_reconfig_peers); | |
4923 | bgp_soft_reconfig_table_flag( | |
4924 | table, false); | |
4925 | return; | |
4926 | } | |
4927 | } | |
4928 | } | |
4929 | } | |
4930 | } | |
4931 | ||
4932 | /* we're either starting the initial iteration, | |
4933 | * or we're going to continue an ongoing iteration | |
4934 | */ | |
4935 | if (dest || table->soft_reconfig_init) { | |
4936 | table->soft_reconfig_init = false; | |
4937 | thread_add_event(bm->master, bgp_soft_reconfig_table_task, | |
4938 | table, 0, &table->soft_reconfig_thread); | |
4939 | return; | |
4940 | } | |
4941 | /* we're done, clean up the background iteration context info and | |
4942 | schedule route annoucement | |
4943 | */ | |
4944 | for (ALL_LIST_ELEMENTS(table->soft_reconfig_peers, node, nnode, peer)) { | |
4945 | listnode_delete(table->soft_reconfig_peers, peer); | |
4946 | bgp_announce_route(peer, table->afi, table->safi, false); | |
4947 | } | |
4948 | ||
4949 | list_delete(&table->soft_reconfig_peers); | |
4950 | } | |
4951 | ||
4952 | ||
4953 | /* Cancel soft_reconfig_table task matching bgp instance, bgp_table | |
4954 | * and peer. | |
4955 | * - bgp cannot be NULL | |
4956 | * - if table and peer are NULL, cancel all threads within the bgp instance | |
4957 | * - if table is NULL and peer is not, | |
4958 | * remove peer in all threads within the bgp instance | |
4959 | * - if peer is NULL, cancel all threads matching table within the bgp instance | |
4960 | */ | |
4961 | void bgp_soft_reconfig_table_task_cancel(const struct bgp *bgp, | |
4962 | const struct bgp_table *table, | |
4963 | const struct peer *peer) | |
4964 | { | |
4965 | struct peer *npeer; | |
4966 | struct listnode *node, *nnode; | |
4967 | int afi, safi; | |
4968 | struct bgp_table *ntable; | |
4969 | ||
4970 | if (!bgp) | |
4971 | return; | |
4972 | ||
4973 | FOREACH_AFI_SAFI (afi, safi) { | |
4974 | ntable = bgp->rib[afi][safi]; | |
4975 | if (!ntable) | |
4976 | continue; | |
4977 | if (table && table != ntable) | |
4978 | continue; | |
4979 | ||
4980 | for (ALL_LIST_ELEMENTS(ntable->soft_reconfig_peers, node, nnode, | |
4981 | npeer)) { | |
4982 | if (peer && peer != npeer) | |
4983 | continue; | |
4984 | listnode_delete(ntable->soft_reconfig_peers, npeer); | |
4985 | } | |
4986 | ||
4987 | if (!ntable->soft_reconfig_peers | |
4988 | || !list_isempty(ntable->soft_reconfig_peers)) | |
4989 | continue; | |
4990 | ||
4991 | list_delete(&ntable->soft_reconfig_peers); | |
4992 | bgp_soft_reconfig_table_flag(ntable, false); | |
4993 | BGP_TIMER_OFF(ntable->soft_reconfig_thread); | |
4994 | } | |
4995 | } | |
4996 | ||
4997 | void bgp_soft_reconfig_in(struct peer *peer, afi_t afi, safi_t safi) | |
4998 | { | |
4999 | struct bgp_dest *dest; | |
5000 | struct bgp_table *table; | |
5001 | struct listnode *node, *nnode; | |
5002 | struct peer *npeer; | |
5003 | struct peer_af *paf; | |
5004 | ||
5005 | if (!peer_established(peer)) | |
5006 | return; | |
5007 | ||
5008 | if ((safi != SAFI_MPLS_VPN) && (safi != SAFI_ENCAP) | |
5009 | && (safi != SAFI_EVPN)) { | |
5010 | table = peer->bgp->rib[afi][safi]; | |
5011 | if (!table) | |
5012 | return; | |
5013 | ||
5014 | table->soft_reconfig_init = true; | |
5015 | ||
5016 | if (!table->soft_reconfig_peers) | |
5017 | table->soft_reconfig_peers = list_new(); | |
5018 | npeer = NULL; | |
5019 | /* add peer to the table soft_reconfig_peers if not already | |
5020 | * there | |
5021 | */ | |
5022 | for (ALL_LIST_ELEMENTS(table->soft_reconfig_peers, node, nnode, | |
5023 | npeer)) { | |
5024 | if (peer == npeer) | |
5025 | break; | |
5026 | } | |
5027 | if (peer != npeer) | |
5028 | listnode_add(table->soft_reconfig_peers, peer); | |
5029 | ||
5030 | /* (re)flag all bgp_dest in table. Existing soft_reconfig_in job | |
5031 | * on table would start back at the beginning. | |
5032 | */ | |
5033 | bgp_soft_reconfig_table_flag(table, true); | |
5034 | ||
5035 | if (!table->soft_reconfig_thread) | |
5036 | thread_add_event(bm->master, | |
5037 | bgp_soft_reconfig_table_task, table, 0, | |
5038 | &table->soft_reconfig_thread); | |
5039 | /* Cancel bgp_announce_route_timer_expired threads. | |
5040 | * bgp_announce_route_timer_expired threads have been scheduled | |
5041 | * to announce routes as soon as the soft_reconfigure process | |
5042 | * finishes. | |
5043 | * In this case, soft_reconfigure is also scheduled by using | |
5044 | * a thread but is planned after the | |
5045 | * bgp_announce_route_timer_expired threads. It means that, | |
5046 | * without cancelling the threads, the route announcement task | |
5047 | * would run before the soft reconfiguration one. That would | |
5048 | * useless and would block vtysh during several seconds. Route | |
5049 | * announcements are rescheduled as soon as the soft_reconfigure | |
5050 | * process finishes. | |
5051 | */ | |
5052 | paf = peer_af_find(peer, afi, safi); | |
5053 | if (paf) | |
5054 | bgp_stop_announce_route_timer(paf); | |
5055 | } else | |
5056 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5057 | dest = bgp_route_next(dest)) { | |
5058 | table = bgp_dest_get_bgp_table_info(dest); | |
5059 | ||
5060 | if (table == NULL) | |
5061 | continue; | |
5062 | ||
5063 | const struct prefix *p = bgp_dest_get_prefix(dest); | |
5064 | struct prefix_rd prd; | |
5065 | ||
5066 | prd.family = AF_UNSPEC; | |
5067 | prd.prefixlen = 64; | |
5068 | memcpy(&prd.val, p->u.val, 8); | |
5069 | ||
5070 | bgp_soft_reconfig_table(peer, afi, safi, table, &prd); | |
5071 | } | |
5072 | } | |
5073 | ||
5074 | ||
5075 | struct bgp_clear_node_queue { | |
5076 | struct bgp_dest *dest; | |
5077 | }; | |
5078 | ||
5079 | static wq_item_status bgp_clear_route_node(struct work_queue *wq, void *data) | |
5080 | { | |
5081 | struct bgp_clear_node_queue *cnq = data; | |
5082 | struct bgp_dest *dest = cnq->dest; | |
5083 | struct peer *peer = wq->spec.data; | |
5084 | struct bgp_path_info *pi; | |
5085 | struct bgp *bgp; | |
5086 | afi_t afi = bgp_dest_table(dest)->afi; | |
5087 | safi_t safi = bgp_dest_table(dest)->safi; | |
5088 | ||
5089 | assert(dest && peer); | |
5090 | bgp = peer->bgp; | |
5091 | ||
5092 | /* It is possible that we have multiple paths for a prefix from a peer | |
5093 | * if that peer is using AddPath. | |
5094 | */ | |
5095 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
5096 | if (pi->peer != peer) | |
5097 | continue; | |
5098 | ||
5099 | /* graceful restart STALE flag set. */ | |
5100 | if (((CHECK_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT) | |
5101 | && peer->nsf[afi][safi]) | |
5102 | || CHECK_FLAG(peer->af_sflags[afi][safi], | |
5103 | PEER_STATUS_ENHANCED_REFRESH)) | |
5104 | && !CHECK_FLAG(pi->flags, BGP_PATH_STALE) | |
5105 | && !CHECK_FLAG(pi->flags, BGP_PATH_UNUSEABLE)) | |
5106 | bgp_path_info_set_flag(dest, pi, BGP_PATH_STALE); | |
5107 | else { | |
5108 | /* If this is an EVPN route, process for | |
5109 | * un-import. */ | |
5110 | if (safi == SAFI_EVPN) | |
5111 | bgp_evpn_unimport_route( | |
5112 | bgp, afi, safi, | |
5113 | bgp_dest_get_prefix(dest), pi); | |
5114 | /* Handle withdraw for VRF route-leaking and L3VPN */ | |
5115 | if (SAFI_UNICAST == safi | |
5116 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF || | |
5117 | bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
5118 | vpn_leak_from_vrf_withdraw(bgp_get_default(), | |
5119 | bgp, pi); | |
5120 | } | |
5121 | if (SAFI_MPLS_VPN == safi && | |
5122 | bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5123 | vpn_leak_to_vrf_withdraw(bgp, pi); | |
5124 | } | |
5125 | ||
5126 | bgp_rib_remove(dest, pi, peer, afi, safi); | |
5127 | } | |
5128 | } | |
5129 | return WQ_SUCCESS; | |
5130 | } | |
5131 | ||
5132 | static void bgp_clear_node_queue_del(struct work_queue *wq, void *data) | |
5133 | { | |
5134 | struct bgp_clear_node_queue *cnq = data; | |
5135 | struct bgp_dest *dest = cnq->dest; | |
5136 | struct bgp_table *table = bgp_dest_table(dest); | |
5137 | ||
5138 | bgp_dest_unlock_node(dest); | |
5139 | bgp_table_unlock(table); | |
5140 | XFREE(MTYPE_BGP_CLEAR_NODE_QUEUE, cnq); | |
5141 | } | |
5142 | ||
5143 | static void bgp_clear_node_complete(struct work_queue *wq) | |
5144 | { | |
5145 | struct peer *peer = wq->spec.data; | |
5146 | ||
5147 | /* Tickle FSM to start moving again */ | |
5148 | BGP_EVENT_ADD(peer, Clearing_Completed); | |
5149 | ||
5150 | peer_unlock(peer); /* bgp_clear_route */ | |
5151 | } | |
5152 | ||
5153 | static void bgp_clear_node_queue_init(struct peer *peer) | |
5154 | { | |
5155 | char wname[sizeof("clear xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx")]; | |
5156 | ||
5157 | snprintf(wname, sizeof(wname), "clear %s", peer->host); | |
5158 | #undef CLEAR_QUEUE_NAME_LEN | |
5159 | ||
5160 | peer->clear_node_queue = work_queue_new(bm->master, wname); | |
5161 | peer->clear_node_queue->spec.hold = 10; | |
5162 | peer->clear_node_queue->spec.workfunc = &bgp_clear_route_node; | |
5163 | peer->clear_node_queue->spec.del_item_data = &bgp_clear_node_queue_del; | |
5164 | peer->clear_node_queue->spec.completion_func = &bgp_clear_node_complete; | |
5165 | peer->clear_node_queue->spec.max_retries = 0; | |
5166 | ||
5167 | /* we only 'lock' this peer reference when the queue is actually active | |
5168 | */ | |
5169 | peer->clear_node_queue->spec.data = peer; | |
5170 | } | |
5171 | ||
5172 | static void bgp_clear_route_table(struct peer *peer, afi_t afi, safi_t safi, | |
5173 | struct bgp_table *table) | |
5174 | { | |
5175 | struct bgp_dest *dest; | |
5176 | int force = peer->bgp->process_queue ? 0 : 1; | |
5177 | ||
5178 | if (!table) | |
5179 | table = peer->bgp->rib[afi][safi]; | |
5180 | ||
5181 | /* If still no table => afi/safi isn't configured at all or smth. */ | |
5182 | if (!table) | |
5183 | return; | |
5184 | ||
5185 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
5186 | struct bgp_path_info *pi, *next; | |
5187 | struct bgp_adj_in *ain; | |
5188 | struct bgp_adj_in *ain_next; | |
5189 | ||
5190 | /* XXX:TODO: This is suboptimal, every non-empty route_node is | |
5191 | * queued for every clearing peer, regardless of whether it is | |
5192 | * relevant to the peer at hand. | |
5193 | * | |
5194 | * Overview: There are 3 different indices which need to be | |
5195 | * scrubbed, potentially, when a peer is removed: | |
5196 | * | |
5197 | * 1 peer's routes visible via the RIB (ie accepted routes) | |
5198 | * 2 peer's routes visible by the (optional) peer's adj-in index | |
5199 | * 3 other routes visible by the peer's adj-out index | |
5200 | * | |
5201 | * 3 there is no hurry in scrubbing, once the struct peer is | |
5202 | * removed from bgp->peer, we could just GC such deleted peer's | |
5203 | * adj-outs at our leisure. | |
5204 | * | |
5205 | * 1 and 2 must be 'scrubbed' in some way, at least made | |
5206 | * invisible via RIB index before peer session is allowed to be | |
5207 | * brought back up. So one needs to know when such a 'search' is | |
5208 | * complete. | |
5209 | * | |
5210 | * Ideally: | |
5211 | * | |
5212 | * - there'd be a single global queue or a single RIB walker | |
5213 | * - rather than tracking which route_nodes still need to be | |
5214 | * examined on a peer basis, we'd track which peers still | |
5215 | * aren't cleared | |
5216 | * | |
5217 | * Given that our per-peer prefix-counts now should be reliable, | |
5218 | * this may actually be achievable. It doesn't seem to be a huge | |
5219 | * problem at this time, | |
5220 | * | |
5221 | * It is possible that we have multiple paths for a prefix from | |
5222 | * a peer | |
5223 | * if that peer is using AddPath. | |
5224 | */ | |
5225 | ain = dest->adj_in; | |
5226 | while (ain) { | |
5227 | ain_next = ain->next; | |
5228 | ||
5229 | if (ain->peer == peer) | |
5230 | bgp_adj_in_remove(dest, ain); | |
5231 | ||
5232 | ain = ain_next; | |
5233 | } | |
5234 | ||
5235 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = next) { | |
5236 | next = pi->next; | |
5237 | if (pi->peer != peer) | |
5238 | continue; | |
5239 | ||
5240 | if (force) | |
5241 | bgp_path_info_reap(dest, pi); | |
5242 | else { | |
5243 | struct bgp_clear_node_queue *cnq; | |
5244 | ||
5245 | /* both unlocked in bgp_clear_node_queue_del */ | |
5246 | bgp_table_lock(bgp_dest_table(dest)); | |
5247 | bgp_dest_lock_node(dest); | |
5248 | cnq = XCALLOC( | |
5249 | MTYPE_BGP_CLEAR_NODE_QUEUE, | |
5250 | sizeof(struct bgp_clear_node_queue)); | |
5251 | cnq->dest = dest; | |
5252 | work_queue_add(peer->clear_node_queue, cnq); | |
5253 | break; | |
5254 | } | |
5255 | } | |
5256 | } | |
5257 | return; | |
5258 | } | |
5259 | ||
5260 | void bgp_clear_route(struct peer *peer, afi_t afi, safi_t safi) | |
5261 | { | |
5262 | struct bgp_dest *dest; | |
5263 | struct bgp_table *table; | |
5264 | ||
5265 | if (peer->clear_node_queue == NULL) | |
5266 | bgp_clear_node_queue_init(peer); | |
5267 | ||
5268 | /* bgp_fsm.c keeps sessions in state Clearing, not transitioning to | |
5269 | * Idle until it receives a Clearing_Completed event. This protects | |
5270 | * against peers which flap faster than we can we clear, which could | |
5271 | * lead to: | |
5272 | * | |
5273 | * a) race with routes from the new session being installed before | |
5274 | * clear_route_node visits the node (to delete the route of that | |
5275 | * peer) | |
5276 | * b) resource exhaustion, clear_route_node likely leads to an entry | |
5277 | * on the process_main queue. Fast-flapping could cause that queue | |
5278 | * to grow and grow. | |
5279 | */ | |
5280 | ||
5281 | /* lock peer in assumption that clear-node-queue will get nodes; if so, | |
5282 | * the unlock will happen upon work-queue completion; other wise, the | |
5283 | * unlock happens at the end of this function. | |
5284 | */ | |
5285 | if (!peer->clear_node_queue->thread) | |
5286 | peer_lock(peer); | |
5287 | ||
5288 | if (safi != SAFI_MPLS_VPN && safi != SAFI_ENCAP && safi != SAFI_EVPN) | |
5289 | bgp_clear_route_table(peer, afi, safi, NULL); | |
5290 | else | |
5291 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5292 | dest = bgp_route_next(dest)) { | |
5293 | table = bgp_dest_get_bgp_table_info(dest); | |
5294 | if (!table) | |
5295 | continue; | |
5296 | ||
5297 | bgp_clear_route_table(peer, afi, safi, table); | |
5298 | } | |
5299 | ||
5300 | /* unlock if no nodes got added to the clear-node-queue. */ | |
5301 | if (!peer->clear_node_queue->thread) | |
5302 | peer_unlock(peer); | |
5303 | } | |
5304 | ||
5305 | void bgp_clear_route_all(struct peer *peer) | |
5306 | { | |
5307 | afi_t afi; | |
5308 | safi_t safi; | |
5309 | ||
5310 | FOREACH_AFI_SAFI (afi, safi) | |
5311 | bgp_clear_route(peer, afi, safi); | |
5312 | ||
5313 | #ifdef ENABLE_BGP_VNC | |
5314 | rfapiProcessPeerDown(peer); | |
5315 | #endif | |
5316 | } | |
5317 | ||
5318 | void bgp_clear_adj_in(struct peer *peer, afi_t afi, safi_t safi) | |
5319 | { | |
5320 | struct bgp_table *table; | |
5321 | struct bgp_dest *dest; | |
5322 | struct bgp_adj_in *ain; | |
5323 | struct bgp_adj_in *ain_next; | |
5324 | ||
5325 | table = peer->bgp->rib[afi][safi]; | |
5326 | ||
5327 | /* It is possible that we have multiple paths for a prefix from a peer | |
5328 | * if that peer is using AddPath. | |
5329 | */ | |
5330 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
5331 | ain = dest->adj_in; | |
5332 | ||
5333 | while (ain) { | |
5334 | ain_next = ain->next; | |
5335 | ||
5336 | if (ain->peer == peer) | |
5337 | bgp_adj_in_remove(dest, ain); | |
5338 | ||
5339 | ain = ain_next; | |
5340 | } | |
5341 | } | |
5342 | } | |
5343 | ||
5344 | /* If any of the routes from the peer have been marked with the NO_LLGR | |
5345 | * community, either as sent by the peer, or as the result of a configured | |
5346 | * policy, they MUST NOT be retained, but MUST be removed as per the normal | |
5347 | * operation of [RFC4271]. | |
5348 | */ | |
5349 | void bgp_clear_stale_route(struct peer *peer, afi_t afi, safi_t safi) | |
5350 | { | |
5351 | struct bgp_dest *dest; | |
5352 | struct bgp_path_info *pi; | |
5353 | struct bgp_table *table; | |
5354 | ||
5355 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP || safi == SAFI_EVPN) { | |
5356 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5357 | dest = bgp_route_next(dest)) { | |
5358 | struct bgp_dest *rm; | |
5359 | ||
5360 | /* look for neighbor in tables */ | |
5361 | table = bgp_dest_get_bgp_table_info(dest); | |
5362 | if (!table) | |
5363 | continue; | |
5364 | ||
5365 | for (rm = bgp_table_top(table); rm; | |
5366 | rm = bgp_route_next(rm)) | |
5367 | for (pi = bgp_dest_get_bgp_path_info(rm); pi; | |
5368 | pi = pi->next) { | |
5369 | if (pi->peer != peer) | |
5370 | continue; | |
5371 | if (CHECK_FLAG( | |
5372 | peer->af_sflags[afi][safi], | |
5373 | PEER_STATUS_LLGR_WAIT) && | |
5374 | bgp_attr_get_community(pi->attr) && | |
5375 | !community_include( | |
5376 | bgp_attr_get_community( | |
5377 | pi->attr), | |
5378 | COMMUNITY_NO_LLGR)) | |
5379 | continue; | |
5380 | if (!CHECK_FLAG(pi->flags, | |
5381 | BGP_PATH_STALE)) | |
5382 | continue; | |
5383 | ||
5384 | /* | |
5385 | * If this is VRF leaked route | |
5386 | * process for withdraw. | |
5387 | */ | |
5388 | if (pi->sub_type == | |
5389 | BGP_ROUTE_IMPORTED && | |
5390 | peer->bgp->inst_type == | |
5391 | BGP_INSTANCE_TYPE_DEFAULT) | |
5392 | vpn_leak_to_vrf_withdraw( | |
5393 | peer->bgp, pi); | |
5394 | ||
5395 | bgp_rib_remove(rm, pi, peer, afi, safi); | |
5396 | break; | |
5397 | } | |
5398 | } | |
5399 | } else { | |
5400 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5401 | dest = bgp_route_next(dest)) | |
5402 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; | |
5403 | pi = pi->next) { | |
5404 | if (pi->peer != peer) | |
5405 | continue; | |
5406 | if (CHECK_FLAG(peer->af_sflags[afi][safi], | |
5407 | PEER_STATUS_LLGR_WAIT) && | |
5408 | bgp_attr_get_community(pi->attr) && | |
5409 | !community_include( | |
5410 | bgp_attr_get_community(pi->attr), | |
5411 | COMMUNITY_NO_LLGR)) | |
5412 | continue; | |
5413 | if (!CHECK_FLAG(pi->flags, BGP_PATH_STALE)) | |
5414 | continue; | |
5415 | if (safi == SAFI_UNICAST && | |
5416 | (peer->bgp->inst_type == | |
5417 | BGP_INSTANCE_TYPE_VRF || | |
5418 | peer->bgp->inst_type == | |
5419 | BGP_INSTANCE_TYPE_DEFAULT)) | |
5420 | vpn_leak_from_vrf_withdraw( | |
5421 | bgp_get_default(), peer->bgp, | |
5422 | pi); | |
5423 | ||
5424 | bgp_rib_remove(dest, pi, peer, afi, safi); | |
5425 | break; | |
5426 | } | |
5427 | } | |
5428 | } | |
5429 | ||
5430 | void bgp_set_stale_route(struct peer *peer, afi_t afi, safi_t safi) | |
5431 | { | |
5432 | struct bgp_dest *dest, *ndest; | |
5433 | struct bgp_path_info *pi; | |
5434 | struct bgp_table *table; | |
5435 | ||
5436 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP || safi == SAFI_EVPN) { | |
5437 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5438 | dest = bgp_route_next(dest)) { | |
5439 | table = bgp_dest_get_bgp_table_info(dest); | |
5440 | if (!table) | |
5441 | continue; | |
5442 | ||
5443 | for (ndest = bgp_table_top(table); ndest; | |
5444 | ndest = bgp_route_next(ndest)) { | |
5445 | for (pi = bgp_dest_get_bgp_path_info(ndest); pi; | |
5446 | pi = pi->next) { | |
5447 | if (pi->peer != peer) | |
5448 | continue; | |
5449 | ||
5450 | if ((CHECK_FLAG( | |
5451 | peer->af_sflags[afi][safi], | |
5452 | PEER_STATUS_ENHANCED_REFRESH)) | |
5453 | && !CHECK_FLAG(pi->flags, | |
5454 | BGP_PATH_STALE) | |
5455 | && !CHECK_FLAG( | |
5456 | pi->flags, | |
5457 | BGP_PATH_UNUSEABLE)) { | |
5458 | if (bgp_debug_neighbor_events( | |
5459 | peer)) | |
5460 | zlog_debug( | |
5461 | "%s: route-refresh for %s/%s, marking prefix %pFX as stale", | |
5462 | peer->host, | |
5463 | afi2str(afi), | |
5464 | safi2str(safi), | |
5465 | bgp_dest_get_prefix( | |
5466 | ndest)); | |
5467 | ||
5468 | bgp_path_info_set_flag( | |
5469 | ndest, pi, | |
5470 | BGP_PATH_STALE); | |
5471 | } | |
5472 | } | |
5473 | } | |
5474 | } | |
5475 | } else { | |
5476 | for (dest = bgp_table_top(peer->bgp->rib[afi][safi]); dest; | |
5477 | dest = bgp_route_next(dest)) { | |
5478 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; | |
5479 | pi = pi->next) { | |
5480 | if (pi->peer != peer) | |
5481 | continue; | |
5482 | ||
5483 | if ((CHECK_FLAG(peer->af_sflags[afi][safi], | |
5484 | PEER_STATUS_ENHANCED_REFRESH)) | |
5485 | && !CHECK_FLAG(pi->flags, BGP_PATH_STALE) | |
5486 | && !CHECK_FLAG(pi->flags, | |
5487 | BGP_PATH_UNUSEABLE)) { | |
5488 | if (bgp_debug_neighbor_events(peer)) | |
5489 | zlog_debug( | |
5490 | "%s: route-refresh for %s/%s, marking prefix %pFX as stale", | |
5491 | peer->host, | |
5492 | afi2str(afi), | |
5493 | safi2str(safi), | |
5494 | bgp_dest_get_prefix( | |
5495 | dest)); | |
5496 | ||
5497 | bgp_path_info_set_flag(dest, pi, | |
5498 | BGP_PATH_STALE); | |
5499 | } | |
5500 | } | |
5501 | } | |
5502 | } | |
5503 | } | |
5504 | ||
5505 | bool bgp_outbound_policy_exists(struct peer *peer, struct bgp_filter *filter) | |
5506 | { | |
5507 | if (peer->sort == BGP_PEER_IBGP) | |
5508 | return true; | |
5509 | ||
5510 | if (peer->sort == BGP_PEER_EBGP | |
5511 | && (ROUTE_MAP_OUT_NAME(filter) || PREFIX_LIST_OUT_NAME(filter) | |
5512 | || FILTER_LIST_OUT_NAME(filter) | |
5513 | || DISTRIBUTE_OUT_NAME(filter))) | |
5514 | return true; | |
5515 | return false; | |
5516 | } | |
5517 | ||
5518 | bool bgp_inbound_policy_exists(struct peer *peer, struct bgp_filter *filter) | |
5519 | { | |
5520 | if (peer->sort == BGP_PEER_IBGP) | |
5521 | return true; | |
5522 | ||
5523 | if (peer->sort == BGP_PEER_EBGP | |
5524 | && (ROUTE_MAP_IN_NAME(filter) || PREFIX_LIST_IN_NAME(filter) | |
5525 | || FILTER_LIST_IN_NAME(filter) | |
5526 | || DISTRIBUTE_IN_NAME(filter))) | |
5527 | return true; | |
5528 | return false; | |
5529 | } | |
5530 | ||
5531 | static void bgp_cleanup_table(struct bgp *bgp, struct bgp_table *table, | |
5532 | safi_t safi) | |
5533 | { | |
5534 | struct bgp_dest *dest; | |
5535 | struct bgp_path_info *pi; | |
5536 | struct bgp_path_info *next; | |
5537 | ||
5538 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) | |
5539 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = next) { | |
5540 | const struct prefix *p = bgp_dest_get_prefix(dest); | |
5541 | ||
5542 | next = pi->next; | |
5543 | ||
5544 | /* Unimport EVPN routes from VRFs */ | |
5545 | if (safi == SAFI_EVPN) | |
5546 | bgp_evpn_unimport_route(bgp, AFI_L2VPN, | |
5547 | SAFI_EVPN, p, pi); | |
5548 | ||
5549 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) | |
5550 | && pi->type == ZEBRA_ROUTE_BGP | |
5551 | && (pi->sub_type == BGP_ROUTE_NORMAL | |
5552 | || pi->sub_type == BGP_ROUTE_AGGREGATE | |
5553 | || pi->sub_type == BGP_ROUTE_IMPORTED)) { | |
5554 | ||
5555 | if (bgp_fibupd_safi(safi)) | |
5556 | bgp_zebra_withdraw(p, pi, bgp, safi); | |
5557 | } | |
5558 | ||
5559 | bgp_path_info_reap(dest, pi); | |
5560 | } | |
5561 | } | |
5562 | ||
5563 | /* Delete all kernel routes. */ | |
5564 | void bgp_cleanup_routes(struct bgp *bgp) | |
5565 | { | |
5566 | afi_t afi; | |
5567 | struct bgp_dest *dest; | |
5568 | struct bgp_table *table; | |
5569 | ||
5570 | for (afi = AFI_IP; afi < AFI_MAX; ++afi) { | |
5571 | if (afi == AFI_L2VPN) | |
5572 | continue; | |
5573 | bgp_cleanup_table(bgp, bgp->rib[afi][SAFI_UNICAST], | |
5574 | SAFI_UNICAST); | |
5575 | /* | |
5576 | * VPN and ENCAP and EVPN tables are two-level (RD is top level) | |
5577 | */ | |
5578 | if (afi != AFI_L2VPN) { | |
5579 | safi_t safi; | |
5580 | safi = SAFI_MPLS_VPN; | |
5581 | for (dest = bgp_table_top(bgp->rib[afi][safi]); dest; | |
5582 | dest = bgp_route_next(dest)) { | |
5583 | table = bgp_dest_get_bgp_table_info(dest); | |
5584 | if (table != NULL) { | |
5585 | bgp_cleanup_table(bgp, table, safi); | |
5586 | bgp_table_finish(&table); | |
5587 | bgp_dest_set_bgp_table_info(dest, NULL); | |
5588 | bgp_dest_unlock_node(dest); | |
5589 | } | |
5590 | } | |
5591 | safi = SAFI_ENCAP; | |
5592 | for (dest = bgp_table_top(bgp->rib[afi][safi]); dest; | |
5593 | dest = bgp_route_next(dest)) { | |
5594 | table = bgp_dest_get_bgp_table_info(dest); | |
5595 | if (table != NULL) { | |
5596 | bgp_cleanup_table(bgp, table, safi); | |
5597 | bgp_table_finish(&table); | |
5598 | bgp_dest_set_bgp_table_info(dest, NULL); | |
5599 | bgp_dest_unlock_node(dest); | |
5600 | } | |
5601 | } | |
5602 | } | |
5603 | } | |
5604 | for (dest = bgp_table_top(bgp->rib[AFI_L2VPN][SAFI_EVPN]); dest; | |
5605 | dest = bgp_route_next(dest)) { | |
5606 | table = bgp_dest_get_bgp_table_info(dest); | |
5607 | if (table != NULL) { | |
5608 | bgp_cleanup_table(bgp, table, SAFI_EVPN); | |
5609 | bgp_table_finish(&table); | |
5610 | bgp_dest_set_bgp_table_info(dest, NULL); | |
5611 | bgp_dest_unlock_node(dest); | |
5612 | } | |
5613 | } | |
5614 | } | |
5615 | ||
5616 | void bgp_reset(void) | |
5617 | { | |
5618 | vty_reset(); | |
5619 | bgp_zclient_reset(); | |
5620 | access_list_reset(); | |
5621 | prefix_list_reset(); | |
5622 | } | |
5623 | ||
5624 | bool bgp_addpath_encode_rx(struct peer *peer, afi_t afi, safi_t safi) | |
5625 | { | |
5626 | return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5627 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5628 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5629 | } | |
5630 | ||
5631 | /* Parse NLRI stream. Withdraw NLRI is recognized by NULL attr | |
5632 | value. */ | |
5633 | int bgp_nlri_parse_ip(struct peer *peer, struct attr *attr, | |
5634 | struct bgp_nlri *packet) | |
5635 | { | |
5636 | uint8_t *pnt; | |
5637 | uint8_t *lim; | |
5638 | struct prefix p; | |
5639 | int psize; | |
5640 | int ret; | |
5641 | afi_t afi; | |
5642 | safi_t safi; | |
5643 | bool addpath_capable; | |
5644 | uint32_t addpath_id; | |
5645 | ||
5646 | pnt = packet->nlri; | |
5647 | lim = pnt + packet->length; | |
5648 | afi = packet->afi; | |
5649 | safi = packet->safi; | |
5650 | addpath_id = 0; | |
5651 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); | |
5652 | ||
5653 | /* RFC4771 6.3 The NLRI field in the UPDATE message is checked for | |
5654 | syntactic validity. If the field is syntactically incorrect, | |
5655 | then the Error Subcode is set to Invalid Network Field. */ | |
5656 | for (; pnt < lim; pnt += psize) { | |
5657 | /* Clear prefix structure. */ | |
5658 | memset(&p, 0, sizeof(struct prefix)); | |
5659 | ||
5660 | if (addpath_capable) { | |
5661 | ||
5662 | /* When packet overflow occurs return immediately. */ | |
5663 | if (pnt + BGP_ADDPATH_ID_LEN >= lim) | |
5664 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; | |
5665 | ||
5666 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); | |
5667 | addpath_id = ntohl(addpath_id); | |
5668 | pnt += BGP_ADDPATH_ID_LEN; | |
5669 | } | |
5670 | ||
5671 | /* Fetch prefix length. */ | |
5672 | p.prefixlen = *pnt++; | |
5673 | /* afi/safi validity already verified by caller, | |
5674 | * bgp_update_receive */ | |
5675 | p.family = afi2family(afi); | |
5676 | ||
5677 | /* Prefix length check. */ | |
5678 | if (p.prefixlen > prefix_blen(&p) * 8) { | |
5679 | flog_err( | |
5680 | EC_BGP_UPDATE_RCV, | |
5681 | "%s [Error] Update packet error (wrong prefix length %d for afi %u)", | |
5682 | peer->host, p.prefixlen, packet->afi); | |
5683 | return BGP_NLRI_PARSE_ERROR_PREFIX_LENGTH; | |
5684 | } | |
5685 | ||
5686 | /* Packet size overflow check. */ | |
5687 | psize = PSIZE(p.prefixlen); | |
5688 | ||
5689 | /* When packet overflow occur return immediately. */ | |
5690 | if (pnt + psize > lim) { | |
5691 | flog_err( | |
5692 | EC_BGP_UPDATE_RCV, | |
5693 | "%s [Error] Update packet error (prefix length %d overflows packet)", | |
5694 | peer->host, p.prefixlen); | |
5695 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; | |
5696 | } | |
5697 | ||
5698 | /* Defensive coding, double-check the psize fits in a struct | |
5699 | * prefix */ | |
5700 | if (psize > (ssize_t)sizeof(p.u)) { | |
5701 | flog_err( | |
5702 | EC_BGP_UPDATE_RCV, | |
5703 | "%s [Error] Update packet error (prefix length %d too large for prefix storage %zu)", | |
5704 | peer->host, p.prefixlen, sizeof(p.u)); | |
5705 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; | |
5706 | } | |
5707 | ||
5708 | /* Fetch prefix from NLRI packet. */ | |
5709 | memcpy(p.u.val, pnt, psize); | |
5710 | ||
5711 | /* Check address. */ | |
5712 | if (afi == AFI_IP && safi == SAFI_UNICAST) { | |
5713 | if (IN_CLASSD(ntohl(p.u.prefix4.s_addr))) { | |
5714 | /* From RFC4271 Section 6.3: | |
5715 | * | |
5716 | * If a prefix in the NLRI field is semantically | |
5717 | * incorrect | |
5718 | * (e.g., an unexpected multicast IP address), | |
5719 | * an error SHOULD | |
5720 | * be logged locally, and the prefix SHOULD be | |
5721 | * ignored. | |
5722 | */ | |
5723 | flog_err( | |
5724 | EC_BGP_UPDATE_RCV, | |
5725 | "%s: IPv4 unicast NLRI is multicast address %pI4, ignoring", | |
5726 | peer->host, &p.u.prefix4); | |
5727 | continue; | |
5728 | } | |
5729 | } | |
5730 | ||
5731 | /* Check address. */ | |
5732 | if (afi == AFI_IP6 && safi == SAFI_UNICAST) { | |
5733 | if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) { | |
5734 | flog_err( | |
5735 | EC_BGP_UPDATE_RCV, | |
5736 | "%s: IPv6 unicast NLRI is link-local address %pI6, ignoring", | |
5737 | peer->host, &p.u.prefix6); | |
5738 | ||
5739 | continue; | |
5740 | } | |
5741 | if (IN6_IS_ADDR_MULTICAST(&p.u.prefix6)) { | |
5742 | flog_err( | |
5743 | EC_BGP_UPDATE_RCV, | |
5744 | "%s: IPv6 unicast NLRI is multicast address %pI6, ignoring", | |
5745 | peer->host, &p.u.prefix6); | |
5746 | ||
5747 | continue; | |
5748 | } | |
5749 | } | |
5750 | ||
5751 | /* Normal process. */ | |
5752 | if (attr) | |
5753 | ret = bgp_update(peer, &p, addpath_id, attr, afi, safi, | |
5754 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
5755 | NULL, NULL, 0, 0, NULL); | |
5756 | else | |
5757 | ret = bgp_withdraw(peer, &p, addpath_id, attr, afi, | |
5758 | safi, ZEBRA_ROUTE_BGP, | |
5759 | BGP_ROUTE_NORMAL, NULL, NULL, 0, | |
5760 | NULL); | |
5761 | ||
5762 | /* Do not send BGP notification twice when maximum-prefix count | |
5763 | * overflow. */ | |
5764 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_PREFIX_OVERFLOW)) | |
5765 | return BGP_NLRI_PARSE_ERROR_PREFIX_OVERFLOW; | |
5766 | ||
5767 | /* Address family configuration mismatch. */ | |
5768 | if (ret < 0) | |
5769 | return BGP_NLRI_PARSE_ERROR_ADDRESS_FAMILY; | |
5770 | } | |
5771 | ||
5772 | /* Packet length consistency check. */ | |
5773 | if (pnt != lim) { | |
5774 | flog_err( | |
5775 | EC_BGP_UPDATE_RCV, | |
5776 | "%s [Error] Update packet error (prefix length mismatch with total length)", | |
5777 | peer->host); | |
5778 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; | |
5779 | } | |
5780 | ||
5781 | return BGP_NLRI_PARSE_OK; | |
5782 | } | |
5783 | ||
5784 | static struct bgp_static *bgp_static_new(void) | |
5785 | { | |
5786 | return XCALLOC(MTYPE_BGP_STATIC, sizeof(struct bgp_static)); | |
5787 | } | |
5788 | ||
5789 | static void bgp_static_free(struct bgp_static *bgp_static) | |
5790 | { | |
5791 | XFREE(MTYPE_ROUTE_MAP_NAME, bgp_static->rmap.name); | |
5792 | route_map_counter_decrement(bgp_static->rmap.map); | |
5793 | ||
5794 | XFREE(MTYPE_ATTR, bgp_static->eth_s_id); | |
5795 | XFREE(MTYPE_BGP_STATIC, bgp_static); | |
5796 | } | |
5797 | ||
5798 | void bgp_static_update(struct bgp *bgp, const struct prefix *p, | |
5799 | struct bgp_static *bgp_static, afi_t afi, safi_t safi) | |
5800 | { | |
5801 | struct bgp_dest *dest; | |
5802 | struct bgp_path_info *pi; | |
5803 | struct bgp_path_info *new; | |
5804 | struct bgp_path_info rmap_path; | |
5805 | struct attr attr; | |
5806 | struct attr *attr_new; | |
5807 | route_map_result_t ret; | |
5808 | #ifdef ENABLE_BGP_VNC | |
5809 | int vnc_implicit_withdraw = 0; | |
5810 | #endif | |
5811 | ||
5812 | assert(bgp_static); | |
5813 | ||
5814 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, NULL); | |
5815 | ||
5816 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
5817 | ||
5818 | attr.nexthop = bgp_static->igpnexthop; | |
5819 | attr.med = bgp_static->igpmetric; | |
5820 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC); | |
5821 | ||
5822 | if (bgp_static->atomic) | |
5823 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_ATOMIC_AGGREGATE); | |
5824 | ||
5825 | /* Store label index, if required. */ | |
5826 | if (bgp_static->label_index != BGP_INVALID_LABEL_INDEX) { | |
5827 | attr.label_index = bgp_static->label_index; | |
5828 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PREFIX_SID); | |
5829 | } | |
5830 | ||
5831 | /* Apply route-map. */ | |
5832 | if (bgp_static->rmap.name) { | |
5833 | struct attr attr_tmp = attr; | |
5834 | ||
5835 | memset(&rmap_path, 0, sizeof(struct bgp_path_info)); | |
5836 | rmap_path.peer = bgp->peer_self; | |
5837 | rmap_path.attr = &attr_tmp; | |
5838 | ||
5839 | SET_FLAG(bgp->peer_self->rmap_type, PEER_RMAP_TYPE_NETWORK); | |
5840 | ||
5841 | ret = route_map_apply(bgp_static->rmap.map, p, &rmap_path); | |
5842 | ||
5843 | bgp->peer_self->rmap_type = 0; | |
5844 | ||
5845 | if (ret == RMAP_DENYMATCH) { | |
5846 | /* Free uninterned attribute. */ | |
5847 | bgp_attr_flush(&attr_tmp); | |
5848 | ||
5849 | /* Unintern original. */ | |
5850 | aspath_unintern(&attr.aspath); | |
5851 | bgp_static_withdraw(bgp, p, afi, safi); | |
5852 | return; | |
5853 | } | |
5854 | ||
5855 | if (bgp_in_graceful_shutdown(bgp)) | |
5856 | bgp_attr_add_gshut_community(&attr_tmp); | |
5857 | ||
5858 | attr_new = bgp_attr_intern(&attr_tmp); | |
5859 | } else { | |
5860 | ||
5861 | if (bgp_in_graceful_shutdown(bgp)) | |
5862 | bgp_attr_add_gshut_community(&attr); | |
5863 | ||
5864 | attr_new = bgp_attr_intern(&attr); | |
5865 | } | |
5866 | ||
5867 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
5868 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
5869 | && pi->sub_type == BGP_ROUTE_STATIC) | |
5870 | break; | |
5871 | ||
5872 | if (pi) { | |
5873 | if (attrhash_cmp(pi->attr, attr_new) | |
5874 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED) | |
5875 | && !CHECK_FLAG(bgp->flags, BGP_FLAG_FORCE_STATIC_PROCESS)) { | |
5876 | bgp_dest_unlock_node(dest); | |
5877 | bgp_attr_unintern(&attr_new); | |
5878 | aspath_unintern(&attr.aspath); | |
5879 | return; | |
5880 | } else { | |
5881 | /* The attribute is changed. */ | |
5882 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
5883 | ||
5884 | /* Rewrite BGP route information. */ | |
5885 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
5886 | bgp_path_info_restore(dest, pi); | |
5887 | else | |
5888 | bgp_aggregate_decrement(bgp, p, pi, afi, safi); | |
5889 | #ifdef ENABLE_BGP_VNC | |
5890 | if ((afi == AFI_IP || afi == AFI_IP6) | |
5891 | && (safi == SAFI_UNICAST)) { | |
5892 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
5893 | /* | |
5894 | * Implicit withdraw case. | |
5895 | * We have to do this before pi is | |
5896 | * changed | |
5897 | */ | |
5898 | ++vnc_implicit_withdraw; | |
5899 | vnc_import_bgp_del_route(bgp, p, pi); | |
5900 | vnc_import_bgp_exterior_del_route( | |
5901 | bgp, p, pi); | |
5902 | } | |
5903 | } | |
5904 | #endif | |
5905 | bgp_attr_unintern(&pi->attr); | |
5906 | pi->attr = attr_new; | |
5907 | pi->uptime = bgp_clock(); | |
5908 | #ifdef ENABLE_BGP_VNC | |
5909 | if ((afi == AFI_IP || afi == AFI_IP6) | |
5910 | && (safi == SAFI_UNICAST)) { | |
5911 | if (vnc_implicit_withdraw) { | |
5912 | vnc_import_bgp_add_route(bgp, p, pi); | |
5913 | vnc_import_bgp_exterior_add_route( | |
5914 | bgp, p, pi); | |
5915 | } | |
5916 | } | |
5917 | #endif | |
5918 | ||
5919 | /* Nexthop reachability check. */ | |
5920 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_IMPORT_CHECK) | |
5921 | && (safi == SAFI_UNICAST | |
5922 | || safi == SAFI_LABELED_UNICAST)) { | |
5923 | ||
5924 | struct bgp *bgp_nexthop = bgp; | |
5925 | ||
5926 | if (pi->extra && pi->extra->bgp_orig) | |
5927 | bgp_nexthop = pi->extra->bgp_orig; | |
5928 | ||
5929 | if (bgp_find_or_add_nexthop(bgp, bgp_nexthop, | |
5930 | afi, safi, pi, NULL, | |
5931 | 0, p)) | |
5932 | bgp_path_info_set_flag(dest, pi, | |
5933 | BGP_PATH_VALID); | |
5934 | else { | |
5935 | if (BGP_DEBUG(nht, NHT)) { | |
5936 | char buf1[INET6_ADDRSTRLEN]; | |
5937 | inet_ntop(p->family, | |
5938 | &p->u.prefix, buf1, | |
5939 | INET6_ADDRSTRLEN); | |
5940 | zlog_debug( | |
5941 | "%s(%s): Route not in table, not advertising", | |
5942 | __func__, buf1); | |
5943 | } | |
5944 | bgp_path_info_unset_flag( | |
5945 | dest, pi, BGP_PATH_VALID); | |
5946 | } | |
5947 | } else { | |
5948 | /* Delete the NHT structure if any, if we're | |
5949 | * toggling between | |
5950 | * enabling/disabling import check. We | |
5951 | * deregister the route | |
5952 | * from NHT to avoid overloading NHT and the | |
5953 | * process interaction | |
5954 | */ | |
5955 | bgp_unlink_nexthop(pi); | |
5956 | bgp_path_info_set_flag(dest, pi, | |
5957 | BGP_PATH_VALID); | |
5958 | } | |
5959 | /* Process change. */ | |
5960 | bgp_aggregate_increment(bgp, p, pi, afi, safi); | |
5961 | bgp_process(bgp, dest, afi, safi); | |
5962 | ||
5963 | if (SAFI_UNICAST == safi | |
5964 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
5965 | || bgp->inst_type | |
5966 | == BGP_INSTANCE_TYPE_DEFAULT)) { | |
5967 | vpn_leak_from_vrf_update(bgp_get_default(), bgp, | |
5968 | pi); | |
5969 | } | |
5970 | ||
5971 | bgp_dest_unlock_node(dest); | |
5972 | aspath_unintern(&attr.aspath); | |
5973 | return; | |
5974 | } | |
5975 | } | |
5976 | ||
5977 | /* Make new BGP info. */ | |
5978 | new = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, bgp->peer_self, | |
5979 | attr_new, dest); | |
5980 | /* Nexthop reachability check. */ | |
5981 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_IMPORT_CHECK) | |
5982 | && (safi == SAFI_UNICAST || safi == SAFI_LABELED_UNICAST)) { | |
5983 | if (bgp_find_or_add_nexthop(bgp, bgp, afi, safi, new, NULL, 0, | |
5984 | p)) | |
5985 | bgp_path_info_set_flag(dest, new, BGP_PATH_VALID); | |
5986 | else { | |
5987 | if (BGP_DEBUG(nht, NHT)) { | |
5988 | char buf1[INET6_ADDRSTRLEN]; | |
5989 | inet_ntop(p->family, &p->u.prefix, buf1, | |
5990 | INET6_ADDRSTRLEN); | |
5991 | zlog_debug( | |
5992 | "%s(%s): Route not in table, not advertising", | |
5993 | __func__, buf1); | |
5994 | } | |
5995 | bgp_path_info_unset_flag(dest, new, BGP_PATH_VALID); | |
5996 | } | |
5997 | } else { | |
5998 | /* Delete the NHT structure if any, if we're toggling between | |
5999 | * enabling/disabling import check. We deregister the route | |
6000 | * from NHT to avoid overloading NHT and the process interaction | |
6001 | */ | |
6002 | bgp_unlink_nexthop(new); | |
6003 | ||
6004 | bgp_path_info_set_flag(dest, new, BGP_PATH_VALID); | |
6005 | } | |
6006 | ||
6007 | /* Aggregate address increment. */ | |
6008 | bgp_aggregate_increment(bgp, p, new, afi, safi); | |
6009 | ||
6010 | /* Register new BGP information. */ | |
6011 | bgp_path_info_add(dest, new); | |
6012 | ||
6013 | /* route_node_get lock */ | |
6014 | bgp_dest_unlock_node(dest); | |
6015 | ||
6016 | /* Process change. */ | |
6017 | bgp_process(bgp, dest, afi, safi); | |
6018 | ||
6019 | if (SAFI_UNICAST == safi | |
6020 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
6021 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
6022 | vpn_leak_from_vrf_update(bgp_get_default(), bgp, new); | |
6023 | } | |
6024 | ||
6025 | /* Unintern original. */ | |
6026 | aspath_unintern(&attr.aspath); | |
6027 | } | |
6028 | ||
6029 | void bgp_static_withdraw(struct bgp *bgp, const struct prefix *p, afi_t afi, | |
6030 | safi_t safi) | |
6031 | { | |
6032 | struct bgp_dest *dest; | |
6033 | struct bgp_path_info *pi; | |
6034 | ||
6035 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, NULL); | |
6036 | ||
6037 | /* Check selected route and self inserted route. */ | |
6038 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6039 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
6040 | && pi->sub_type == BGP_ROUTE_STATIC) | |
6041 | break; | |
6042 | ||
6043 | /* Withdraw static BGP route from routing table. */ | |
6044 | if (pi) { | |
6045 | if (SAFI_UNICAST == safi | |
6046 | && (bgp->inst_type == BGP_INSTANCE_TYPE_VRF | |
6047 | || bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
6048 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp, pi); | |
6049 | } | |
6050 | bgp_aggregate_decrement(bgp, p, pi, afi, safi); | |
6051 | bgp_unlink_nexthop(pi); | |
6052 | bgp_path_info_delete(dest, pi); | |
6053 | bgp_process(bgp, dest, afi, safi); | |
6054 | } | |
6055 | ||
6056 | /* Unlock bgp_node_lookup. */ | |
6057 | bgp_dest_unlock_node(dest); | |
6058 | } | |
6059 | ||
6060 | /* | |
6061 | * Used for SAFI_MPLS_VPN and SAFI_ENCAP | |
6062 | */ | |
6063 | static void bgp_static_withdraw_safi(struct bgp *bgp, const struct prefix *p, | |
6064 | afi_t afi, safi_t safi, | |
6065 | struct prefix_rd *prd) | |
6066 | { | |
6067 | struct bgp_dest *dest; | |
6068 | struct bgp_path_info *pi; | |
6069 | ||
6070 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, prd); | |
6071 | ||
6072 | /* Check selected route and self inserted route. */ | |
6073 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6074 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
6075 | && pi->sub_type == BGP_ROUTE_STATIC) | |
6076 | break; | |
6077 | ||
6078 | /* Withdraw static BGP route from routing table. */ | |
6079 | if (pi) { | |
6080 | #ifdef ENABLE_BGP_VNC | |
6081 | rfapiProcessWithdraw( | |
6082 | pi->peer, NULL, p, prd, pi->attr, afi, safi, pi->type, | |
6083 | 1); /* Kill, since it is an administrative change */ | |
6084 | #endif | |
6085 | if (SAFI_MPLS_VPN == safi | |
6086 | && bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
6087 | vpn_leak_to_vrf_withdraw(bgp, pi); | |
6088 | } | |
6089 | bgp_aggregate_decrement(bgp, p, pi, afi, safi); | |
6090 | bgp_path_info_delete(dest, pi); | |
6091 | bgp_process(bgp, dest, afi, safi); | |
6092 | } | |
6093 | ||
6094 | /* Unlock bgp_node_lookup. */ | |
6095 | bgp_dest_unlock_node(dest); | |
6096 | } | |
6097 | ||
6098 | static void bgp_static_update_safi(struct bgp *bgp, const struct prefix *p, | |
6099 | struct bgp_static *bgp_static, afi_t afi, | |
6100 | safi_t safi) | |
6101 | { | |
6102 | struct bgp_dest *dest; | |
6103 | struct bgp_path_info *new; | |
6104 | struct attr *attr_new; | |
6105 | struct attr attr = {0}; | |
6106 | struct bgp_path_info *pi; | |
6107 | #ifdef ENABLE_BGP_VNC | |
6108 | mpls_label_t label = 0; | |
6109 | #endif | |
6110 | uint32_t num_labels = 0; | |
6111 | ||
6112 | assert(bgp_static); | |
6113 | ||
6114 | if (bgp_static->label != MPLS_INVALID_LABEL) | |
6115 | num_labels = 1; | |
6116 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, | |
6117 | &bgp_static->prd); | |
6118 | ||
6119 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
6120 | ||
6121 | attr.nexthop = bgp_static->igpnexthop; | |
6122 | attr.med = bgp_static->igpmetric; | |
6123 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC); | |
6124 | ||
6125 | if ((safi == SAFI_EVPN) || (safi == SAFI_MPLS_VPN) | |
6126 | || (safi == SAFI_ENCAP)) { | |
6127 | if (afi == AFI_IP) { | |
6128 | attr.mp_nexthop_global_in = bgp_static->igpnexthop; | |
6129 | attr.mp_nexthop_len = IPV4_MAX_BYTELEN; | |
6130 | } | |
6131 | } | |
6132 | if (afi == AFI_L2VPN) { | |
6133 | if (bgp_static->gatewayIp.family == AF_INET) { | |
6134 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); | |
6135 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6136 | &bgp_static->gatewayIp.u.prefix4, | |
6137 | IPV4_MAX_BYTELEN); | |
6138 | } else if (bgp_static->gatewayIp.family == AF_INET6) { | |
6139 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); | |
6140 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6141 | &bgp_static->gatewayIp.u.prefix6, | |
6142 | IPV6_MAX_BYTELEN); | |
6143 | } | |
6144 | memcpy(&attr.esi, bgp_static->eth_s_id, sizeof(esi_t)); | |
6145 | if (bgp_static->encap_tunneltype == BGP_ENCAP_TYPE_VXLAN) { | |
6146 | struct bgp_encap_type_vxlan bet; | |
6147 | memset(&bet, 0, sizeof(struct bgp_encap_type_vxlan)); | |
6148 | bet.vnid = p->u.prefix_evpn.prefix_addr.eth_tag; | |
6149 | bgp_encap_type_vxlan_to_tlv(&bet, &attr); | |
6150 | } | |
6151 | if (bgp_static->router_mac) { | |
6152 | bgp_add_routermac_ecom(&attr, bgp_static->router_mac); | |
6153 | } | |
6154 | } | |
6155 | /* Apply route-map. */ | |
6156 | if (bgp_static->rmap.name) { | |
6157 | struct attr attr_tmp = attr; | |
6158 | struct bgp_path_info rmap_path; | |
6159 | route_map_result_t ret; | |
6160 | ||
6161 | rmap_path.peer = bgp->peer_self; | |
6162 | rmap_path.attr = &attr_tmp; | |
6163 | ||
6164 | SET_FLAG(bgp->peer_self->rmap_type, PEER_RMAP_TYPE_NETWORK); | |
6165 | ||
6166 | ret = route_map_apply(bgp_static->rmap.map, p, &rmap_path); | |
6167 | ||
6168 | bgp->peer_self->rmap_type = 0; | |
6169 | ||
6170 | if (ret == RMAP_DENYMATCH) { | |
6171 | /* Free uninterned attribute. */ | |
6172 | bgp_attr_flush(&attr_tmp); | |
6173 | ||
6174 | /* Unintern original. */ | |
6175 | aspath_unintern(&attr.aspath); | |
6176 | bgp_static_withdraw_safi(bgp, p, afi, safi, | |
6177 | &bgp_static->prd); | |
6178 | return; | |
6179 | } | |
6180 | ||
6181 | attr_new = bgp_attr_intern(&attr_tmp); | |
6182 | } else { | |
6183 | attr_new = bgp_attr_intern(&attr); | |
6184 | } | |
6185 | ||
6186 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6187 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
6188 | && pi->sub_type == BGP_ROUTE_STATIC) | |
6189 | break; | |
6190 | ||
6191 | if (pi) { | |
6192 | if (attrhash_cmp(pi->attr, attr_new) | |
6193 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
6194 | bgp_dest_unlock_node(dest); | |
6195 | bgp_attr_unintern(&attr_new); | |
6196 | aspath_unintern(&attr.aspath); | |
6197 | return; | |
6198 | } else { | |
6199 | /* The attribute is changed. */ | |
6200 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
6201 | ||
6202 | /* Rewrite BGP route information. */ | |
6203 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
6204 | bgp_path_info_restore(dest, pi); | |
6205 | else | |
6206 | bgp_aggregate_decrement(bgp, p, pi, afi, safi); | |
6207 | bgp_attr_unintern(&pi->attr); | |
6208 | pi->attr = attr_new; | |
6209 | pi->uptime = bgp_clock(); | |
6210 | #ifdef ENABLE_BGP_VNC | |
6211 | if (pi->extra) | |
6212 | label = decode_label(&pi->extra->label[0]); | |
6213 | #endif | |
6214 | ||
6215 | /* Process change. */ | |
6216 | bgp_aggregate_increment(bgp, p, pi, afi, safi); | |
6217 | bgp_process(bgp, dest, afi, safi); | |
6218 | ||
6219 | if (SAFI_MPLS_VPN == safi | |
6220 | && bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
6221 | vpn_leak_to_vrf_update(bgp, pi); | |
6222 | } | |
6223 | #ifdef ENABLE_BGP_VNC | |
6224 | rfapiProcessUpdate(pi->peer, NULL, p, &bgp_static->prd, | |
6225 | pi->attr, afi, safi, pi->type, | |
6226 | pi->sub_type, &label); | |
6227 | #endif | |
6228 | bgp_dest_unlock_node(dest); | |
6229 | aspath_unintern(&attr.aspath); | |
6230 | return; | |
6231 | } | |
6232 | } | |
6233 | ||
6234 | ||
6235 | /* Make new BGP info. */ | |
6236 | new = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, bgp->peer_self, | |
6237 | attr_new, dest); | |
6238 | SET_FLAG(new->flags, BGP_PATH_VALID); | |
6239 | bgp_path_info_extra_get(new); | |
6240 | if (num_labels) { | |
6241 | new->extra->label[0] = bgp_static->label; | |
6242 | new->extra->num_labels = num_labels; | |
6243 | } | |
6244 | #ifdef ENABLE_BGP_VNC | |
6245 | label = decode_label(&bgp_static->label); | |
6246 | #endif | |
6247 | ||
6248 | /* Aggregate address increment. */ | |
6249 | bgp_aggregate_increment(bgp, p, new, afi, safi); | |
6250 | ||
6251 | /* Register new BGP information. */ | |
6252 | bgp_path_info_add(dest, new); | |
6253 | /* route_node_get lock */ | |
6254 | bgp_dest_unlock_node(dest); | |
6255 | ||
6256 | /* Process change. */ | |
6257 | bgp_process(bgp, dest, afi, safi); | |
6258 | ||
6259 | if (SAFI_MPLS_VPN == safi | |
6260 | && bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
6261 | vpn_leak_to_vrf_update(bgp, new); | |
6262 | } | |
6263 | #ifdef ENABLE_BGP_VNC | |
6264 | rfapiProcessUpdate(new->peer, NULL, p, &bgp_static->prd, new->attr, afi, | |
6265 | safi, new->type, new->sub_type, &label); | |
6266 | #endif | |
6267 | ||
6268 | /* Unintern original. */ | |
6269 | aspath_unintern(&attr.aspath); | |
6270 | } | |
6271 | ||
6272 | /* Configure static BGP network. When user don't run zebra, static | |
6273 | route should be installed as valid. */ | |
6274 | static int bgp_static_set(struct vty *vty, const char *negate, | |
6275 | const char *ip_str, afi_t afi, safi_t safi, | |
6276 | const char *rmap, int backdoor, uint32_t label_index) | |
6277 | { | |
6278 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
6279 | int ret; | |
6280 | struct prefix p; | |
6281 | struct bgp_static *bgp_static; | |
6282 | struct bgp_dest *dest; | |
6283 | uint8_t need_update = 0; | |
6284 | ||
6285 | /* Convert IP prefix string to struct prefix. */ | |
6286 | ret = str2prefix(ip_str, &p); | |
6287 | if (!ret) { | |
6288 | vty_out(vty, "%% Malformed prefix\n"); | |
6289 | return CMD_WARNING_CONFIG_FAILED; | |
6290 | } | |
6291 | if (afi == AFI_IP6 && IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) { | |
6292 | vty_out(vty, "%% Malformed prefix (link-local address)\n"); | |
6293 | return CMD_WARNING_CONFIG_FAILED; | |
6294 | } | |
6295 | ||
6296 | apply_mask(&p); | |
6297 | ||
6298 | if (negate) { | |
6299 | ||
6300 | /* Set BGP static route configuration. */ | |
6301 | dest = bgp_node_lookup(bgp->route[afi][safi], &p); | |
6302 | ||
6303 | if (!dest) { | |
6304 | vty_out(vty, "%% Can't find static route specified\n"); | |
6305 | return CMD_WARNING_CONFIG_FAILED; | |
6306 | } | |
6307 | ||
6308 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
6309 | ||
6310 | if ((label_index != BGP_INVALID_LABEL_INDEX) | |
6311 | && (label_index != bgp_static->label_index)) { | |
6312 | vty_out(vty, | |
6313 | "%% label-index doesn't match static route\n"); | |
6314 | bgp_dest_unlock_node(dest); | |
6315 | return CMD_WARNING_CONFIG_FAILED; | |
6316 | } | |
6317 | ||
6318 | if ((rmap && bgp_static->rmap.name) | |
6319 | && strcmp(rmap, bgp_static->rmap.name)) { | |
6320 | vty_out(vty, | |
6321 | "%% route-map name doesn't match static route\n"); | |
6322 | bgp_dest_unlock_node(dest); | |
6323 | return CMD_WARNING_CONFIG_FAILED; | |
6324 | } | |
6325 | ||
6326 | /* Update BGP RIB. */ | |
6327 | if (!bgp_static->backdoor) | |
6328 | bgp_static_withdraw(bgp, &p, afi, safi); | |
6329 | ||
6330 | /* Clear configuration. */ | |
6331 | bgp_static_free(bgp_static); | |
6332 | bgp_dest_set_bgp_static_info(dest, NULL); | |
6333 | bgp_dest_unlock_node(dest); | |
6334 | bgp_dest_unlock_node(dest); | |
6335 | } else { | |
6336 | ||
6337 | /* Set BGP static route configuration. */ | |
6338 | dest = bgp_node_get(bgp->route[afi][safi], &p); | |
6339 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
6340 | if (bgp_static) { | |
6341 | /* Configuration change. */ | |
6342 | /* Label index cannot be changed. */ | |
6343 | if (bgp_static->label_index != label_index) { | |
6344 | vty_out(vty, "%% cannot change label-index\n"); | |
6345 | return CMD_WARNING_CONFIG_FAILED; | |
6346 | } | |
6347 | ||
6348 | /* Check previous routes are installed into BGP. */ | |
6349 | if (bgp_static->valid | |
6350 | && bgp_static->backdoor != backdoor) | |
6351 | need_update = 1; | |
6352 | ||
6353 | bgp_static->backdoor = backdoor; | |
6354 | ||
6355 | if (rmap) { | |
6356 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
6357 | bgp_static->rmap.name); | |
6358 | route_map_counter_decrement( | |
6359 | bgp_static->rmap.map); | |
6360 | bgp_static->rmap.name = | |
6361 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap); | |
6362 | bgp_static->rmap.map = | |
6363 | route_map_lookup_by_name(rmap); | |
6364 | route_map_counter_increment( | |
6365 | bgp_static->rmap.map); | |
6366 | } else { | |
6367 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
6368 | bgp_static->rmap.name); | |
6369 | route_map_counter_decrement( | |
6370 | bgp_static->rmap.map); | |
6371 | bgp_static->rmap.map = NULL; | |
6372 | bgp_static->valid = 0; | |
6373 | } | |
6374 | bgp_dest_unlock_node(dest); | |
6375 | } else { | |
6376 | /* New configuration. */ | |
6377 | bgp_static = bgp_static_new(); | |
6378 | bgp_static->backdoor = backdoor; | |
6379 | bgp_static->valid = 0; | |
6380 | bgp_static->igpmetric = 0; | |
6381 | bgp_static->igpnexthop.s_addr = INADDR_ANY; | |
6382 | bgp_static->label_index = label_index; | |
6383 | ||
6384 | if (rmap) { | |
6385 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
6386 | bgp_static->rmap.name); | |
6387 | route_map_counter_decrement( | |
6388 | bgp_static->rmap.map); | |
6389 | bgp_static->rmap.name = | |
6390 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap); | |
6391 | bgp_static->rmap.map = | |
6392 | route_map_lookup_by_name(rmap); | |
6393 | route_map_counter_increment( | |
6394 | bgp_static->rmap.map); | |
6395 | } | |
6396 | bgp_dest_set_bgp_static_info(dest, bgp_static); | |
6397 | } | |
6398 | ||
6399 | bgp_static->valid = 1; | |
6400 | if (need_update) | |
6401 | bgp_static_withdraw(bgp, &p, afi, safi); | |
6402 | ||
6403 | if (!bgp_static->backdoor) | |
6404 | bgp_static_update(bgp, &p, bgp_static, afi, safi); | |
6405 | } | |
6406 | ||
6407 | return CMD_SUCCESS; | |
6408 | } | |
6409 | ||
6410 | void bgp_static_add(struct bgp *bgp) | |
6411 | { | |
6412 | afi_t afi; | |
6413 | safi_t safi; | |
6414 | struct bgp_dest *dest; | |
6415 | struct bgp_dest *rm; | |
6416 | struct bgp_table *table; | |
6417 | struct bgp_static *bgp_static; | |
6418 | ||
6419 | SET_FLAG(bgp->flags, BGP_FLAG_FORCE_STATIC_PROCESS); | |
6420 | FOREACH_AFI_SAFI (afi, safi) | |
6421 | for (dest = bgp_table_top(bgp->route[afi][safi]); dest; | |
6422 | dest = bgp_route_next(dest)) { | |
6423 | if (!bgp_dest_has_bgp_path_info_data(dest)) | |
6424 | continue; | |
6425 | ||
6426 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
6427 | || (safi == SAFI_EVPN)) { | |
6428 | table = bgp_dest_get_bgp_table_info(dest); | |
6429 | ||
6430 | for (rm = bgp_table_top(table); rm; | |
6431 | rm = bgp_route_next(rm)) { | |
6432 | bgp_static = | |
6433 | bgp_dest_get_bgp_static_info( | |
6434 | rm); | |
6435 | bgp_static_update_safi( | |
6436 | bgp, bgp_dest_get_prefix(rm), | |
6437 | bgp_static, afi, safi); | |
6438 | } | |
6439 | } else { | |
6440 | bgp_static_update( | |
6441 | bgp, bgp_dest_get_prefix(dest), | |
6442 | bgp_dest_get_bgp_static_info(dest), afi, | |
6443 | safi); | |
6444 | } | |
6445 | } | |
6446 | UNSET_FLAG(bgp->flags, BGP_FLAG_FORCE_STATIC_PROCESS); | |
6447 | } | |
6448 | ||
6449 | /* Called from bgp_delete(). Delete all static routes from the BGP | |
6450 | instance. */ | |
6451 | void bgp_static_delete(struct bgp *bgp) | |
6452 | { | |
6453 | afi_t afi; | |
6454 | safi_t safi; | |
6455 | struct bgp_dest *dest; | |
6456 | struct bgp_dest *rm; | |
6457 | struct bgp_table *table; | |
6458 | struct bgp_static *bgp_static; | |
6459 | ||
6460 | FOREACH_AFI_SAFI (afi, safi) | |
6461 | for (dest = bgp_table_top(bgp->route[afi][safi]); dest; | |
6462 | dest = bgp_route_next(dest)) { | |
6463 | if (!bgp_dest_has_bgp_path_info_data(dest)) | |
6464 | continue; | |
6465 | ||
6466 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
6467 | || (safi == SAFI_EVPN)) { | |
6468 | table = bgp_dest_get_bgp_table_info(dest); | |
6469 | ||
6470 | for (rm = bgp_table_top(table); rm; | |
6471 | rm = bgp_route_next(rm)) { | |
6472 | bgp_static = | |
6473 | bgp_dest_get_bgp_static_info( | |
6474 | rm); | |
6475 | if (!bgp_static) | |
6476 | continue; | |
6477 | ||
6478 | bgp_static_withdraw_safi( | |
6479 | bgp, bgp_dest_get_prefix(rm), | |
6480 | AFI_IP, safi, | |
6481 | (struct prefix_rd *) | |
6482 | bgp_dest_get_prefix( | |
6483 | dest)); | |
6484 | bgp_static_free(bgp_static); | |
6485 | bgp_dest_set_bgp_static_info(rm, | |
6486 | NULL); | |
6487 | bgp_dest_unlock_node(rm); | |
6488 | } | |
6489 | } else { | |
6490 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
6491 | bgp_static_withdraw(bgp, | |
6492 | bgp_dest_get_prefix(dest), | |
6493 | afi, safi); | |
6494 | bgp_static_free(bgp_static); | |
6495 | bgp_dest_set_bgp_static_info(dest, NULL); | |
6496 | bgp_dest_unlock_node(dest); | |
6497 | } | |
6498 | } | |
6499 | } | |
6500 | ||
6501 | void bgp_static_redo_import_check(struct bgp *bgp) | |
6502 | { | |
6503 | afi_t afi; | |
6504 | safi_t safi; | |
6505 | struct bgp_dest *dest; | |
6506 | struct bgp_dest *rm; | |
6507 | struct bgp_table *table; | |
6508 | struct bgp_static *bgp_static; | |
6509 | ||
6510 | /* Use this flag to force reprocessing of the route */ | |
6511 | SET_FLAG(bgp->flags, BGP_FLAG_FORCE_STATIC_PROCESS); | |
6512 | FOREACH_AFI_SAFI (afi, safi) { | |
6513 | for (dest = bgp_table_top(bgp->route[afi][safi]); dest; | |
6514 | dest = bgp_route_next(dest)) { | |
6515 | if (!bgp_dest_has_bgp_path_info_data(dest)) | |
6516 | continue; | |
6517 | ||
6518 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
6519 | || (safi == SAFI_EVPN)) { | |
6520 | table = bgp_dest_get_bgp_table_info(dest); | |
6521 | ||
6522 | for (rm = bgp_table_top(table); rm; | |
6523 | rm = bgp_route_next(rm)) { | |
6524 | bgp_static = | |
6525 | bgp_dest_get_bgp_static_info( | |
6526 | rm); | |
6527 | bgp_static_update_safi( | |
6528 | bgp, bgp_dest_get_prefix(rm), | |
6529 | bgp_static, afi, safi); | |
6530 | } | |
6531 | } else { | |
6532 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
6533 | bgp_static_update(bgp, | |
6534 | bgp_dest_get_prefix(dest), | |
6535 | bgp_static, afi, safi); | |
6536 | } | |
6537 | } | |
6538 | } | |
6539 | UNSET_FLAG(bgp->flags, BGP_FLAG_FORCE_STATIC_PROCESS); | |
6540 | } | |
6541 | ||
6542 | static void bgp_purge_af_static_redist_routes(struct bgp *bgp, afi_t afi, | |
6543 | safi_t safi) | |
6544 | { | |
6545 | struct bgp_table *table; | |
6546 | struct bgp_dest *dest; | |
6547 | struct bgp_path_info *pi; | |
6548 | ||
6549 | /* Do not install the aggregate route if BGP is in the | |
6550 | * process of termination. | |
6551 | */ | |
6552 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS) | |
6553 | || (bgp->peer_self == NULL)) | |
6554 | return; | |
6555 | ||
6556 | table = bgp->rib[afi][safi]; | |
6557 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
6558 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
6559 | if (pi->peer == bgp->peer_self | |
6560 | && ((pi->type == ZEBRA_ROUTE_BGP | |
6561 | && pi->sub_type == BGP_ROUTE_STATIC) | |
6562 | || (pi->type != ZEBRA_ROUTE_BGP | |
6563 | && pi->sub_type | |
6564 | == BGP_ROUTE_REDISTRIBUTE))) { | |
6565 | bgp_aggregate_decrement( | |
6566 | bgp, bgp_dest_get_prefix(dest), pi, afi, | |
6567 | safi); | |
6568 | bgp_unlink_nexthop(pi); | |
6569 | bgp_path_info_delete(dest, pi); | |
6570 | bgp_process(bgp, dest, afi, safi); | |
6571 | } | |
6572 | } | |
6573 | } | |
6574 | } | |
6575 | ||
6576 | /* | |
6577 | * Purge all networks and redistributed routes from routing table. | |
6578 | * Invoked upon the instance going down. | |
6579 | */ | |
6580 | void bgp_purge_static_redist_routes(struct bgp *bgp) | |
6581 | { | |
6582 | afi_t afi; | |
6583 | safi_t safi; | |
6584 | ||
6585 | FOREACH_AFI_SAFI (afi, safi) | |
6586 | bgp_purge_af_static_redist_routes(bgp, afi, safi); | |
6587 | } | |
6588 | ||
6589 | /* | |
6590 | * gpz 110624 | |
6591 | * Currently this is used to set static routes for VPN and ENCAP. | |
6592 | * I think it can probably be factored with bgp_static_set. | |
6593 | */ | |
6594 | int bgp_static_set_safi(afi_t afi, safi_t safi, struct vty *vty, | |
6595 | const char *ip_str, const char *rd_str, | |
6596 | const char *label_str, const char *rmap_str, | |
6597 | int evpn_type, const char *esi, const char *gwip, | |
6598 | const char *ethtag, const char *routermac) | |
6599 | { | |
6600 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
6601 | int ret; | |
6602 | struct prefix p; | |
6603 | struct prefix_rd prd; | |
6604 | struct bgp_dest *pdest; | |
6605 | struct bgp_dest *dest; | |
6606 | struct bgp_table *table; | |
6607 | struct bgp_static *bgp_static; | |
6608 | mpls_label_t label = MPLS_INVALID_LABEL; | |
6609 | struct prefix gw_ip; | |
6610 | ||
6611 | /* validate ip prefix */ | |
6612 | ret = str2prefix(ip_str, &p); | |
6613 | if (!ret) { | |
6614 | vty_out(vty, "%% Malformed prefix\n"); | |
6615 | return CMD_WARNING_CONFIG_FAILED; | |
6616 | } | |
6617 | apply_mask(&p); | |
6618 | if ((afi == AFI_L2VPN) | |
6619 | && (bgp_build_evpn_prefix(evpn_type, | |
6620 | ethtag != NULL ? atol(ethtag) : 0, &p))) { | |
6621 | vty_out(vty, "%% L2VPN prefix could not be forged\n"); | |
6622 | return CMD_WARNING_CONFIG_FAILED; | |
6623 | } | |
6624 | ||
6625 | ret = str2prefix_rd(rd_str, &prd); | |
6626 | if (!ret) { | |
6627 | vty_out(vty, "%% Malformed rd\n"); | |
6628 | return CMD_WARNING_CONFIG_FAILED; | |
6629 | } | |
6630 | ||
6631 | if (label_str) { | |
6632 | unsigned long label_val; | |
6633 | label_val = strtoul(label_str, NULL, 10); | |
6634 | encode_label(label_val, &label); | |
6635 | } | |
6636 | ||
6637 | if (safi == SAFI_EVPN) { | |
6638 | if (esi && str2esi(esi, NULL) == 0) { | |
6639 | vty_out(vty, "%% Malformed ESI\n"); | |
6640 | return CMD_WARNING_CONFIG_FAILED; | |
6641 | } | |
6642 | if (routermac && prefix_str2mac(routermac, NULL) == 0) { | |
6643 | vty_out(vty, "%% Malformed Router MAC\n"); | |
6644 | return CMD_WARNING_CONFIG_FAILED; | |
6645 | } | |
6646 | if (gwip) { | |
6647 | memset(&gw_ip, 0, sizeof(struct prefix)); | |
6648 | ret = str2prefix(gwip, &gw_ip); | |
6649 | if (!ret) { | |
6650 | vty_out(vty, "%% Malformed GatewayIp\n"); | |
6651 | return CMD_WARNING_CONFIG_FAILED; | |
6652 | } | |
6653 | if ((gw_ip.family == AF_INET | |
6654 | && is_evpn_prefix_ipaddr_v6( | |
6655 | (struct prefix_evpn *)&p)) | |
6656 | || (gw_ip.family == AF_INET6 | |
6657 | && is_evpn_prefix_ipaddr_v4( | |
6658 | (struct prefix_evpn *)&p))) { | |
6659 | vty_out(vty, | |
6660 | "%% GatewayIp family differs with IP prefix\n"); | |
6661 | return CMD_WARNING_CONFIG_FAILED; | |
6662 | } | |
6663 | } | |
6664 | } | |
6665 | pdest = bgp_node_get(bgp->route[afi][safi], (struct prefix *)&prd); | |
6666 | if (!bgp_dest_has_bgp_path_info_data(pdest)) | |
6667 | bgp_dest_set_bgp_table_info(pdest, | |
6668 | bgp_table_init(bgp, afi, safi)); | |
6669 | table = bgp_dest_get_bgp_table_info(pdest); | |
6670 | ||
6671 | dest = bgp_node_get(table, &p); | |
6672 | ||
6673 | if (bgp_dest_has_bgp_path_info_data(dest)) { | |
6674 | vty_out(vty, "%% Same network configuration exists\n"); | |
6675 | bgp_dest_unlock_node(dest); | |
6676 | } else { | |
6677 | /* New configuration. */ | |
6678 | bgp_static = bgp_static_new(); | |
6679 | bgp_static->backdoor = 0; | |
6680 | bgp_static->valid = 0; | |
6681 | bgp_static->igpmetric = 0; | |
6682 | bgp_static->igpnexthop.s_addr = INADDR_ANY; | |
6683 | bgp_static->label = label; | |
6684 | bgp_static->prd = prd; | |
6685 | ||
6686 | if (rmap_str) { | |
6687 | XFREE(MTYPE_ROUTE_MAP_NAME, bgp_static->rmap.name); | |
6688 | route_map_counter_decrement(bgp_static->rmap.map); | |
6689 | bgp_static->rmap.name = | |
6690 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap_str); | |
6691 | bgp_static->rmap.map = | |
6692 | route_map_lookup_by_name(rmap_str); | |
6693 | route_map_counter_increment(bgp_static->rmap.map); | |
6694 | } | |
6695 | ||
6696 | if (safi == SAFI_EVPN) { | |
6697 | if (esi) { | |
6698 | bgp_static->eth_s_id = | |
6699 | XCALLOC(MTYPE_ATTR, | |
6700 | sizeof(esi_t)); | |
6701 | str2esi(esi, bgp_static->eth_s_id); | |
6702 | } | |
6703 | if (routermac) { | |
6704 | bgp_static->router_mac = | |
6705 | XCALLOC(MTYPE_ATTR, ETH_ALEN + 1); | |
6706 | (void)prefix_str2mac(routermac, | |
6707 | bgp_static->router_mac); | |
6708 | } | |
6709 | if (gwip) | |
6710 | prefix_copy(&bgp_static->gatewayIp, &gw_ip); | |
6711 | } | |
6712 | bgp_dest_set_bgp_static_info(dest, bgp_static); | |
6713 | ||
6714 | bgp_static->valid = 1; | |
6715 | bgp_static_update_safi(bgp, &p, bgp_static, afi, safi); | |
6716 | } | |
6717 | ||
6718 | return CMD_SUCCESS; | |
6719 | } | |
6720 | ||
6721 | /* Configure static BGP network. */ | |
6722 | int bgp_static_unset_safi(afi_t afi, safi_t safi, struct vty *vty, | |
6723 | const char *ip_str, const char *rd_str, | |
6724 | const char *label_str, int evpn_type, const char *esi, | |
6725 | const char *gwip, const char *ethtag) | |
6726 | { | |
6727 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
6728 | int ret; | |
6729 | struct prefix p; | |
6730 | struct prefix_rd prd; | |
6731 | struct bgp_dest *pdest; | |
6732 | struct bgp_dest *dest; | |
6733 | struct bgp_table *table; | |
6734 | struct bgp_static *bgp_static; | |
6735 | mpls_label_t label = MPLS_INVALID_LABEL; | |
6736 | ||
6737 | /* Convert IP prefix string to struct prefix. */ | |
6738 | ret = str2prefix(ip_str, &p); | |
6739 | if (!ret) { | |
6740 | vty_out(vty, "%% Malformed prefix\n"); | |
6741 | return CMD_WARNING_CONFIG_FAILED; | |
6742 | } | |
6743 | apply_mask(&p); | |
6744 | if ((afi == AFI_L2VPN) | |
6745 | && (bgp_build_evpn_prefix(evpn_type, | |
6746 | ethtag != NULL ? atol(ethtag) : 0, &p))) { | |
6747 | vty_out(vty, "%% L2VPN prefix could not be forged\n"); | |
6748 | return CMD_WARNING_CONFIG_FAILED; | |
6749 | } | |
6750 | ret = str2prefix_rd(rd_str, &prd); | |
6751 | if (!ret) { | |
6752 | vty_out(vty, "%% Malformed rd\n"); | |
6753 | return CMD_WARNING_CONFIG_FAILED; | |
6754 | } | |
6755 | ||
6756 | if (label_str) { | |
6757 | unsigned long label_val; | |
6758 | label_val = strtoul(label_str, NULL, 10); | |
6759 | encode_label(label_val, &label); | |
6760 | } | |
6761 | ||
6762 | pdest = bgp_node_get(bgp->route[afi][safi], (struct prefix *)&prd); | |
6763 | if (!bgp_dest_has_bgp_path_info_data(pdest)) | |
6764 | bgp_dest_set_bgp_table_info(pdest, | |
6765 | bgp_table_init(bgp, afi, safi)); | |
6766 | else | |
6767 | bgp_dest_unlock_node(pdest); | |
6768 | table = bgp_dest_get_bgp_table_info(pdest); | |
6769 | ||
6770 | dest = bgp_node_lookup(table, &p); | |
6771 | ||
6772 | if (dest) { | |
6773 | bgp_static_withdraw_safi(bgp, &p, afi, safi, &prd); | |
6774 | ||
6775 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
6776 | bgp_static_free(bgp_static); | |
6777 | bgp_dest_set_bgp_static_info(dest, NULL); | |
6778 | bgp_dest_unlock_node(dest); | |
6779 | bgp_dest_unlock_node(dest); | |
6780 | } else | |
6781 | vty_out(vty, "%% Can't find the route\n"); | |
6782 | ||
6783 | return CMD_SUCCESS; | |
6784 | } | |
6785 | ||
6786 | static int bgp_table_map_set(struct vty *vty, afi_t afi, safi_t safi, | |
6787 | const char *rmap_name) | |
6788 | { | |
6789 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
6790 | struct bgp_rmap *rmap; | |
6791 | ||
6792 | rmap = &bgp->table_map[afi][safi]; | |
6793 | if (rmap_name) { | |
6794 | XFREE(MTYPE_ROUTE_MAP_NAME, rmap->name); | |
6795 | route_map_counter_decrement(rmap->map); | |
6796 | rmap->name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap_name); | |
6797 | rmap->map = route_map_lookup_by_name(rmap_name); | |
6798 | route_map_counter_increment(rmap->map); | |
6799 | } else { | |
6800 | XFREE(MTYPE_ROUTE_MAP_NAME, rmap->name); | |
6801 | route_map_counter_decrement(rmap->map); | |
6802 | rmap->map = NULL; | |
6803 | } | |
6804 | ||
6805 | if (bgp_fibupd_safi(safi)) | |
6806 | bgp_zebra_announce_table(bgp, afi, safi); | |
6807 | ||
6808 | return CMD_SUCCESS; | |
6809 | } | |
6810 | ||
6811 | static int bgp_table_map_unset(struct vty *vty, afi_t afi, safi_t safi, | |
6812 | const char *rmap_name) | |
6813 | { | |
6814 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
6815 | struct bgp_rmap *rmap; | |
6816 | ||
6817 | rmap = &bgp->table_map[afi][safi]; | |
6818 | XFREE(MTYPE_ROUTE_MAP_NAME, rmap->name); | |
6819 | route_map_counter_decrement(rmap->map); | |
6820 | rmap->map = NULL; | |
6821 | ||
6822 | if (bgp_fibupd_safi(safi)) | |
6823 | bgp_zebra_announce_table(bgp, afi, safi); | |
6824 | ||
6825 | return CMD_SUCCESS; | |
6826 | } | |
6827 | ||
6828 | void bgp_config_write_table_map(struct vty *vty, struct bgp *bgp, afi_t afi, | |
6829 | safi_t safi) | |
6830 | { | |
6831 | if (bgp->table_map[afi][safi].name) { | |
6832 | vty_out(vty, " table-map %s\n", | |
6833 | bgp->table_map[afi][safi].name); | |
6834 | } | |
6835 | } | |
6836 | ||
6837 | DEFUN (bgp_table_map, | |
6838 | bgp_table_map_cmd, | |
6839 | "table-map WORD", | |
6840 | "BGP table to RIB route download filter\n" | |
6841 | "Name of the route map\n") | |
6842 | { | |
6843 | int idx_word = 1; | |
6844 | return bgp_table_map_set(vty, bgp_node_afi(vty), bgp_node_safi(vty), | |
6845 | argv[idx_word]->arg); | |
6846 | } | |
6847 | DEFUN (no_bgp_table_map, | |
6848 | no_bgp_table_map_cmd, | |
6849 | "no table-map WORD", | |
6850 | NO_STR | |
6851 | "BGP table to RIB route download filter\n" | |
6852 | "Name of the route map\n") | |
6853 | { | |
6854 | int idx_word = 2; | |
6855 | return bgp_table_map_unset(vty, bgp_node_afi(vty), bgp_node_safi(vty), | |
6856 | argv[idx_word]->arg); | |
6857 | } | |
6858 | ||
6859 | DEFPY(bgp_network, | |
6860 | bgp_network_cmd, | |
6861 | "[no] network \ | |
6862 | <A.B.C.D/M$prefix|A.B.C.D$address [mask A.B.C.D$netmask]> \ | |
6863 | [{route-map WORD$map_name|label-index (0-1048560)$label_index| \ | |
6864 | backdoor$backdoor}]", | |
6865 | NO_STR | |
6866 | "Specify a network to announce via BGP\n" | |
6867 | "IPv4 prefix\n" | |
6868 | "Network number\n" | |
6869 | "Network mask\n" | |
6870 | "Network mask\n" | |
6871 | "Route-map to modify the attributes\n" | |
6872 | "Name of the route map\n" | |
6873 | "Label index to associate with the prefix\n" | |
6874 | "Label index value\n" | |
6875 | "Specify a BGP backdoor route\n") | |
6876 | { | |
6877 | char addr_prefix_str[BUFSIZ]; | |
6878 | ||
6879 | if (address_str) { | |
6880 | int ret; | |
6881 | ||
6882 | ret = netmask_str2prefix_str(address_str, netmask_str, | |
6883 | addr_prefix_str, | |
6884 | sizeof(addr_prefix_str)); | |
6885 | if (!ret) { | |
6886 | vty_out(vty, "%% Inconsistent address and mask\n"); | |
6887 | return CMD_WARNING_CONFIG_FAILED; | |
6888 | } | |
6889 | } | |
6890 | ||
6891 | return bgp_static_set( | |
6892 | vty, no, address_str ? addr_prefix_str : prefix_str, AFI_IP, | |
6893 | bgp_node_safi(vty), map_name, backdoor ? 1 : 0, | |
6894 | label_index ? (uint32_t)label_index : BGP_INVALID_LABEL_INDEX); | |
6895 | } | |
6896 | ||
6897 | DEFPY(ipv6_bgp_network, | |
6898 | ipv6_bgp_network_cmd, | |
6899 | "[no] network X:X::X:X/M$prefix \ | |
6900 | [{route-map WORD$map_name|label-index (0-1048560)$label_index}]", | |
6901 | NO_STR | |
6902 | "Specify a network to announce via BGP\n" | |
6903 | "IPv6 prefix\n" | |
6904 | "Route-map to modify the attributes\n" | |
6905 | "Name of the route map\n" | |
6906 | "Label index to associate with the prefix\n" | |
6907 | "Label index value\n") | |
6908 | { | |
6909 | return bgp_static_set( | |
6910 | vty, no, prefix_str, AFI_IP6, bgp_node_safi(vty), map_name, 0, | |
6911 | label_index ? (uint32_t)label_index : BGP_INVALID_LABEL_INDEX); | |
6912 | } | |
6913 | ||
6914 | static struct bgp_aggregate *bgp_aggregate_new(void) | |
6915 | { | |
6916 | return XCALLOC(MTYPE_BGP_AGGREGATE, sizeof(struct bgp_aggregate)); | |
6917 | } | |
6918 | ||
6919 | static void bgp_aggregate_free(struct bgp_aggregate *aggregate) | |
6920 | { | |
6921 | XFREE(MTYPE_ROUTE_MAP_NAME, aggregate->suppress_map_name); | |
6922 | route_map_counter_decrement(aggregate->suppress_map); | |
6923 | XFREE(MTYPE_ROUTE_MAP_NAME, aggregate->rmap.name); | |
6924 | route_map_counter_decrement(aggregate->rmap.map); | |
6925 | XFREE(MTYPE_BGP_AGGREGATE, aggregate); | |
6926 | } | |
6927 | ||
6928 | /** | |
6929 | * Helper function to avoid repeated code: prepare variables for a | |
6930 | * `route_map_apply` call. | |
6931 | * | |
6932 | * \returns `true` on route map match, otherwise `false`. | |
6933 | */ | |
6934 | static bool aggr_suppress_map_test(struct bgp *bgp, | |
6935 | struct bgp_aggregate *aggregate, | |
6936 | struct bgp_path_info *pi) | |
6937 | { | |
6938 | const struct prefix *p = bgp_dest_get_prefix(pi->net); | |
6939 | route_map_result_t rmr = RMAP_DENYMATCH; | |
6940 | struct bgp_path_info rmap_path = {}; | |
6941 | struct attr attr = {}; | |
6942 | ||
6943 | /* No route map entries created, just don't match. */ | |
6944 | if (aggregate->suppress_map == NULL) | |
6945 | return false; | |
6946 | ||
6947 | /* Call route map matching and return result. */ | |
6948 | attr.aspath = aspath_empty(); | |
6949 | rmap_path.peer = bgp->peer_self; | |
6950 | rmap_path.attr = &attr; | |
6951 | ||
6952 | SET_FLAG(bgp->peer_self->rmap_type, PEER_RMAP_TYPE_AGGREGATE); | |
6953 | rmr = route_map_apply(aggregate->suppress_map, p, &rmap_path); | |
6954 | bgp->peer_self->rmap_type = 0; | |
6955 | ||
6956 | bgp_attr_flush(&attr); | |
6957 | aspath_unintern(&attr.aspath); | |
6958 | ||
6959 | return rmr == RMAP_PERMITMATCH; | |
6960 | } | |
6961 | ||
6962 | /** Test whether the aggregation has suppressed this path or not. */ | |
6963 | static bool aggr_suppress_exists(struct bgp_aggregate *aggregate, | |
6964 | struct bgp_path_info *pi) | |
6965 | { | |
6966 | if (pi->extra == NULL || pi->extra->aggr_suppressors == NULL) | |
6967 | return false; | |
6968 | ||
6969 | return listnode_lookup(pi->extra->aggr_suppressors, aggregate) != NULL; | |
6970 | } | |
6971 | ||
6972 | /** | |
6973 | * Suppress this path and keep the reference. | |
6974 | * | |
6975 | * \returns `true` if needs processing otherwise `false`. | |
6976 | */ | |
6977 | static bool aggr_suppress_path(struct bgp_aggregate *aggregate, | |
6978 | struct bgp_path_info *pi) | |
6979 | { | |
6980 | struct bgp_path_info_extra *pie; | |
6981 | ||
6982 | /* Path is already suppressed by this aggregation. */ | |
6983 | if (aggr_suppress_exists(aggregate, pi)) | |
6984 | return false; | |
6985 | ||
6986 | pie = bgp_path_info_extra_get(pi); | |
6987 | ||
6988 | /* This is the first suppression, allocate memory and list it. */ | |
6989 | if (pie->aggr_suppressors == NULL) | |
6990 | pie->aggr_suppressors = list_new(); | |
6991 | ||
6992 | listnode_add(pie->aggr_suppressors, aggregate); | |
6993 | ||
6994 | /* Only mark for processing if suppressed. */ | |
6995 | if (listcount(pie->aggr_suppressors) == 1) { | |
6996 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
6997 | zlog_debug("aggregate-address suppressing: %pFX", | |
6998 | bgp_dest_get_prefix(pi->net)); | |
6999 | ||
7000 | bgp_path_info_set_flag(pi->net, pi, BGP_PATH_ATTR_CHANGED); | |
7001 | return true; | |
7002 | } | |
7003 | ||
7004 | return false; | |
7005 | } | |
7006 | ||
7007 | /** | |
7008 | * Unsuppress this path and remove the reference. | |
7009 | * | |
7010 | * \returns `true` if needs processing otherwise `false`. | |
7011 | */ | |
7012 | static bool aggr_unsuppress_path(struct bgp_aggregate *aggregate, | |
7013 | struct bgp_path_info *pi) | |
7014 | { | |
7015 | /* Path wasn't suppressed. */ | |
7016 | if (!aggr_suppress_exists(aggregate, pi)) | |
7017 | return false; | |
7018 | ||
7019 | listnode_delete(pi->extra->aggr_suppressors, aggregate); | |
7020 | ||
7021 | /* Unsuppress and free extra memory if last item. */ | |
7022 | if (listcount(pi->extra->aggr_suppressors) == 0) { | |
7023 | if (BGP_DEBUG(update, UPDATE_OUT)) | |
7024 | zlog_debug("aggregate-address unsuppressing: %pFX", | |
7025 | bgp_dest_get_prefix(pi->net)); | |
7026 | ||
7027 | list_delete(&pi->extra->aggr_suppressors); | |
7028 | bgp_path_info_set_flag(pi->net, pi, BGP_PATH_ATTR_CHANGED); | |
7029 | return true; | |
7030 | } | |
7031 | ||
7032 | return false; | |
7033 | } | |
7034 | ||
7035 | static bool bgp_aggregate_info_same(struct bgp_path_info *pi, uint8_t origin, | |
7036 | struct aspath *aspath, | |
7037 | struct community *comm, | |
7038 | struct ecommunity *ecomm, | |
7039 | struct lcommunity *lcomm) | |
7040 | { | |
7041 | static struct aspath *ae = NULL; | |
7042 | ||
7043 | if (!ae) | |
7044 | ae = aspath_empty(); | |
7045 | ||
7046 | if (!pi) | |
7047 | return false; | |
7048 | ||
7049 | if (origin != pi->attr->origin) | |
7050 | return false; | |
7051 | ||
7052 | if (!aspath_cmp(pi->attr->aspath, (aspath) ? aspath : ae)) | |
7053 | return false; | |
7054 | ||
7055 | if (!community_cmp(bgp_attr_get_community(pi->attr), comm)) | |
7056 | return false; | |
7057 | ||
7058 | if (!ecommunity_cmp(bgp_attr_get_ecommunity(pi->attr), ecomm)) | |
7059 | return false; | |
7060 | ||
7061 | if (!lcommunity_cmp(bgp_attr_get_lcommunity(pi->attr), lcomm)) | |
7062 | return false; | |
7063 | ||
7064 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
7065 | return false; | |
7066 | ||
7067 | return true; | |
7068 | } | |
7069 | ||
7070 | static void bgp_aggregate_install( | |
7071 | struct bgp *bgp, afi_t afi, safi_t safi, const struct prefix *p, | |
7072 | uint8_t origin, struct aspath *aspath, struct community *community, | |
7073 | struct ecommunity *ecommunity, struct lcommunity *lcommunity, | |
7074 | uint8_t atomic_aggregate, struct bgp_aggregate *aggregate) | |
7075 | { | |
7076 | struct bgp_dest *dest; | |
7077 | struct bgp_table *table; | |
7078 | struct bgp_path_info *pi, *orig, *new; | |
7079 | struct attr *attr; | |
7080 | ||
7081 | table = bgp->rib[afi][safi]; | |
7082 | ||
7083 | dest = bgp_node_get(table, p); | |
7084 | ||
7085 | for (orig = pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
7086 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
7087 | && pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7088 | break; | |
7089 | ||
7090 | /* | |
7091 | * If we have paths with different MEDs, then don't install | |
7092 | * (or uninstall) the aggregate route. | |
7093 | */ | |
7094 | if (aggregate->match_med && aggregate->med_mismatched) | |
7095 | goto uninstall_aggregate_route; | |
7096 | ||
7097 | if (aggregate->count > 0) { | |
7098 | /* | |
7099 | * If the aggregate information has not changed | |
7100 | * no need to re-install it again. | |
7101 | */ | |
7102 | if (bgp_aggregate_info_same(orig, origin, aspath, community, | |
7103 | ecommunity, lcommunity)) { | |
7104 | bgp_dest_unlock_node(dest); | |
7105 | ||
7106 | if (aspath) | |
7107 | aspath_free(aspath); | |
7108 | if (community) | |
7109 | community_free(&community); | |
7110 | if (ecommunity) | |
7111 | ecommunity_free(&ecommunity); | |
7112 | if (lcommunity) | |
7113 | lcommunity_free(&lcommunity); | |
7114 | ||
7115 | return; | |
7116 | } | |
7117 | ||
7118 | /* | |
7119 | * Mark the old as unusable | |
7120 | */ | |
7121 | if (pi) | |
7122 | bgp_path_info_delete(dest, pi); | |
7123 | ||
7124 | attr = bgp_attr_aggregate_intern( | |
7125 | bgp, origin, aspath, community, ecommunity, lcommunity, | |
7126 | aggregate, atomic_aggregate, p); | |
7127 | ||
7128 | if (!attr) { | |
7129 | bgp_aggregate_delete(bgp, p, afi, safi, aggregate); | |
7130 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
7131 | zlog_debug("%s: %pFX null attribute", __func__, | |
7132 | p); | |
7133 | return; | |
7134 | } | |
7135 | ||
7136 | new = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_AGGREGATE, 0, | |
7137 | bgp->peer_self, attr, dest); | |
7138 | ||
7139 | SET_FLAG(new->flags, BGP_PATH_VALID); | |
7140 | ||
7141 | bgp_path_info_add(dest, new); | |
7142 | bgp_process(bgp, dest, afi, safi); | |
7143 | } else { | |
7144 | uninstall_aggregate_route: | |
7145 | for (pi = orig; pi; pi = pi->next) | |
7146 | if (pi->peer == bgp->peer_self | |
7147 | && pi->type == ZEBRA_ROUTE_BGP | |
7148 | && pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7149 | break; | |
7150 | ||
7151 | /* Withdraw static BGP route from routing table. */ | |
7152 | if (pi) { | |
7153 | bgp_path_info_delete(dest, pi); | |
7154 | bgp_process(bgp, dest, afi, safi); | |
7155 | } | |
7156 | } | |
7157 | ||
7158 | bgp_dest_unlock_node(dest); | |
7159 | } | |
7160 | ||
7161 | /** | |
7162 | * Check if the current path has different MED than other known paths. | |
7163 | * | |
7164 | * \returns `true` if the MED matched the others else `false`. | |
7165 | */ | |
7166 | static bool bgp_aggregate_med_match(struct bgp_aggregate *aggregate, | |
7167 | struct bgp *bgp, struct bgp_path_info *pi) | |
7168 | { | |
7169 | uint32_t cur_med = bgp_med_value(pi->attr, bgp); | |
7170 | ||
7171 | /* This is the first route being analyzed. */ | |
7172 | if (!aggregate->med_initialized) { | |
7173 | aggregate->med_initialized = true; | |
7174 | aggregate->med_mismatched = false; | |
7175 | aggregate->med_matched_value = cur_med; | |
7176 | } else { | |
7177 | /* Check if routes with different MED showed up. */ | |
7178 | if (cur_med != aggregate->med_matched_value) | |
7179 | aggregate->med_mismatched = true; | |
7180 | } | |
7181 | ||
7182 | return !aggregate->med_mismatched; | |
7183 | } | |
7184 | ||
7185 | /** | |
7186 | * Initializes and tests all routes in the aggregate address path for MED | |
7187 | * values. | |
7188 | * | |
7189 | * \returns `true` if all MEDs are the same otherwise `false`. | |
7190 | */ | |
7191 | static bool bgp_aggregate_test_all_med(struct bgp_aggregate *aggregate, | |
7192 | struct bgp *bgp, const struct prefix *p, | |
7193 | afi_t afi, safi_t safi) | |
7194 | { | |
7195 | struct bgp_table *table = bgp->rib[afi][safi]; | |
7196 | const struct prefix *dest_p; | |
7197 | struct bgp_dest *dest, *top; | |
7198 | struct bgp_path_info *pi; | |
7199 | bool med_matched = true; | |
7200 | ||
7201 | aggregate->med_initialized = false; | |
7202 | ||
7203 | top = bgp_node_get(table, p); | |
7204 | for (dest = bgp_node_get(table, p); dest; | |
7205 | dest = bgp_route_next_until(dest, top)) { | |
7206 | dest_p = bgp_dest_get_prefix(dest); | |
7207 | if (dest_p->prefixlen <= p->prefixlen) | |
7208 | continue; | |
7209 | ||
7210 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
7211 | if (BGP_PATH_HOLDDOWN(pi)) | |
7212 | continue; | |
7213 | if (pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7214 | continue; | |
7215 | if (!bgp_aggregate_med_match(aggregate, bgp, pi)) { | |
7216 | med_matched = false; | |
7217 | break; | |
7218 | } | |
7219 | } | |
7220 | if (!med_matched) | |
7221 | break; | |
7222 | } | |
7223 | bgp_dest_unlock_node(top); | |
7224 | ||
7225 | return med_matched; | |
7226 | } | |
7227 | ||
7228 | /** | |
7229 | * Toggles the route suppression status for this aggregate address | |
7230 | * configuration. | |
7231 | */ | |
7232 | void bgp_aggregate_toggle_suppressed(struct bgp_aggregate *aggregate, | |
7233 | struct bgp *bgp, const struct prefix *p, | |
7234 | afi_t afi, safi_t safi, bool suppress) | |
7235 | { | |
7236 | struct bgp_table *table = bgp->rib[afi][safi]; | |
7237 | const struct prefix *dest_p; | |
7238 | struct bgp_dest *dest, *top; | |
7239 | struct bgp_path_info *pi; | |
7240 | bool toggle_suppression; | |
7241 | ||
7242 | /* We've found a different MED we must revert any suppressed routes. */ | |
7243 | top = bgp_node_get(table, p); | |
7244 | for (dest = bgp_node_get(table, p); dest; | |
7245 | dest = bgp_route_next_until(dest, top)) { | |
7246 | dest_p = bgp_dest_get_prefix(dest); | |
7247 | if (dest_p->prefixlen <= p->prefixlen) | |
7248 | continue; | |
7249 | ||
7250 | toggle_suppression = false; | |
7251 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
7252 | if (BGP_PATH_HOLDDOWN(pi)) | |
7253 | continue; | |
7254 | if (pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7255 | continue; | |
7256 | ||
7257 | /* We are toggling suppression back. */ | |
7258 | if (suppress) { | |
7259 | /* Suppress route if not suppressed already. */ | |
7260 | if (aggr_suppress_path(aggregate, pi)) | |
7261 | toggle_suppression = true; | |
7262 | continue; | |
7263 | } | |
7264 | ||
7265 | /* Install route if there is no more suppression. */ | |
7266 | if (aggr_unsuppress_path(aggregate, pi)) | |
7267 | toggle_suppression = true; | |
7268 | } | |
7269 | ||
7270 | if (toggle_suppression) | |
7271 | bgp_process(bgp, dest, afi, safi); | |
7272 | } | |
7273 | bgp_dest_unlock_node(top); | |
7274 | } | |
7275 | ||
7276 | /** | |
7277 | * Aggregate address MED matching incremental test: this function is called | |
7278 | * when the initial aggregation occurred and we are only testing a single | |
7279 | * new path. | |
7280 | * | |
7281 | * In addition to testing and setting the MED validity it also installs back | |
7282 | * suppressed routes (if summary is configured). | |
7283 | * | |
7284 | * Must not be called in `bgp_aggregate_route`. | |
7285 | */ | |
7286 | static void bgp_aggregate_med_update(struct bgp_aggregate *aggregate, | |
7287 | struct bgp *bgp, const struct prefix *p, | |
7288 | afi_t afi, safi_t safi, | |
7289 | struct bgp_path_info *pi, bool is_adding) | |
7290 | { | |
7291 | /* MED matching disabled. */ | |
7292 | if (!aggregate->match_med) | |
7293 | return; | |
7294 | ||
7295 | /* Aggregation with different MED, nothing to do. */ | |
7296 | if (aggregate->med_mismatched) | |
7297 | return; | |
7298 | ||
7299 | /* | |
7300 | * Test the current entry: | |
7301 | * | |
7302 | * is_adding == true: if the new entry doesn't match then we must | |
7303 | * install all suppressed routes. | |
7304 | * | |
7305 | * is_adding == false: if the entry being removed was the last | |
7306 | * unmatching entry then we can suppress all routes. | |
7307 | */ | |
7308 | if (!is_adding) { | |
7309 | if (bgp_aggregate_test_all_med(aggregate, bgp, p, afi, safi) | |
7310 | && aggregate->summary_only) | |
7311 | bgp_aggregate_toggle_suppressed(aggregate, bgp, p, afi, | |
7312 | safi, true); | |
7313 | } else | |
7314 | bgp_aggregate_med_match(aggregate, bgp, pi); | |
7315 | ||
7316 | /* No mismatches, just quit. */ | |
7317 | if (!aggregate->med_mismatched) | |
7318 | return; | |
7319 | ||
7320 | /* Route summarization is disabled. */ | |
7321 | if (!aggregate->summary_only) | |
7322 | return; | |
7323 | ||
7324 | bgp_aggregate_toggle_suppressed(aggregate, bgp, p, afi, safi, false); | |
7325 | } | |
7326 | ||
7327 | /* Update an aggregate as routes are added/removed from the BGP table */ | |
7328 | void bgp_aggregate_route(struct bgp *bgp, const struct prefix *p, afi_t afi, | |
7329 | safi_t safi, struct bgp_aggregate *aggregate) | |
7330 | { | |
7331 | struct bgp_table *table; | |
7332 | struct bgp_dest *top; | |
7333 | struct bgp_dest *dest; | |
7334 | uint8_t origin; | |
7335 | struct aspath *aspath = NULL; | |
7336 | struct community *community = NULL; | |
7337 | struct ecommunity *ecommunity = NULL; | |
7338 | struct lcommunity *lcommunity = NULL; | |
7339 | struct bgp_path_info *pi; | |
7340 | unsigned long match = 0; | |
7341 | uint8_t atomic_aggregate = 0; | |
7342 | ||
7343 | /* If the bgp instance is being deleted or self peer is deleted | |
7344 | * then do not create aggregate route | |
7345 | */ | |
7346 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS) | |
7347 | || (bgp->peer_self == NULL)) | |
7348 | return; | |
7349 | ||
7350 | /* Initialize and test routes for MED difference. */ | |
7351 | if (aggregate->match_med) | |
7352 | bgp_aggregate_test_all_med(aggregate, bgp, p, afi, safi); | |
7353 | ||
7354 | /* | |
7355 | * Reset aggregate count: we might've been called from route map | |
7356 | * update so in that case we must retest all more specific routes. | |
7357 | * | |
7358 | * \see `bgp_route_map_process_update`. | |
7359 | */ | |
7360 | aggregate->count = 0; | |
7361 | aggregate->incomplete_origin_count = 0; | |
7362 | aggregate->incomplete_origin_count = 0; | |
7363 | aggregate->egp_origin_count = 0; | |
7364 | ||
7365 | /* ORIGIN attribute: If at least one route among routes that are | |
7366 | aggregated has ORIGIN with the value INCOMPLETE, then the | |
7367 | aggregated route must have the ORIGIN attribute with the value | |
7368 | INCOMPLETE. Otherwise, if at least one route among routes that | |
7369 | are aggregated has ORIGIN with the value EGP, then the aggregated | |
7370 | route must have the origin attribute with the value EGP. In all | |
7371 | other case the value of the ORIGIN attribute of the aggregated | |
7372 | route is INTERNAL. */ | |
7373 | origin = BGP_ORIGIN_IGP; | |
7374 | ||
7375 | table = bgp->rib[afi][safi]; | |
7376 | ||
7377 | top = bgp_node_get(table, p); | |
7378 | for (dest = bgp_node_get(table, p); dest; | |
7379 | dest = bgp_route_next_until(dest, top)) { | |
7380 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
7381 | ||
7382 | if (dest_p->prefixlen <= p->prefixlen) | |
7383 | continue; | |
7384 | ||
7385 | /* If suppress fib is enabled and route not installed | |
7386 | * in FIB, skip the route | |
7387 | */ | |
7388 | if (!bgp_check_advertise(bgp, dest)) | |
7389 | continue; | |
7390 | ||
7391 | match = 0; | |
7392 | ||
7393 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
7394 | if (BGP_PATH_HOLDDOWN(pi)) | |
7395 | continue; | |
7396 | ||
7397 | if (pi->attr->flag | |
7398 | & ATTR_FLAG_BIT(BGP_ATTR_ATOMIC_AGGREGATE)) | |
7399 | atomic_aggregate = 1; | |
7400 | ||
7401 | if (pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7402 | continue; | |
7403 | ||
7404 | /* | |
7405 | * summary-only aggregate route suppress | |
7406 | * aggregated route announcements. | |
7407 | * | |
7408 | * MED matching: | |
7409 | * Don't create summaries if MED didn't match | |
7410 | * otherwise neither the specific routes and the | |
7411 | * aggregation will be announced. | |
7412 | */ | |
7413 | if (aggregate->summary_only | |
7414 | && AGGREGATE_MED_VALID(aggregate)) { | |
7415 | if (aggr_suppress_path(aggregate, pi)) | |
7416 | match++; | |
7417 | } | |
7418 | ||
7419 | /* | |
7420 | * Suppress more specific routes that match the route | |
7421 | * map results. | |
7422 | * | |
7423 | * MED matching: | |
7424 | * Don't suppress routes if MED matching is enabled and | |
7425 | * it mismatched otherwise we might end up with no | |
7426 | * routes for this path. | |
7427 | */ | |
7428 | if (aggregate->suppress_map_name | |
7429 | && AGGREGATE_MED_VALID(aggregate) | |
7430 | && aggr_suppress_map_test(bgp, aggregate, pi)) { | |
7431 | if (aggr_suppress_path(aggregate, pi)) | |
7432 | match++; | |
7433 | } | |
7434 | ||
7435 | aggregate->count++; | |
7436 | ||
7437 | /* | |
7438 | * If at least one route among routes that are | |
7439 | * aggregated has ORIGIN with the value INCOMPLETE, | |
7440 | * then the aggregated route MUST have the ORIGIN | |
7441 | * attribute with the value INCOMPLETE. Otherwise, if | |
7442 | * at least one route among routes that are aggregated | |
7443 | * has ORIGIN with the value EGP, then the aggregated | |
7444 | * route MUST have the ORIGIN attribute with the value | |
7445 | * EGP. | |
7446 | */ | |
7447 | switch (pi->attr->origin) { | |
7448 | case BGP_ORIGIN_INCOMPLETE: | |
7449 | aggregate->incomplete_origin_count++; | |
7450 | break; | |
7451 | case BGP_ORIGIN_EGP: | |
7452 | aggregate->egp_origin_count++; | |
7453 | break; | |
7454 | default: | |
7455 | /*Do nothing. | |
7456 | */ | |
7457 | break; | |
7458 | } | |
7459 | ||
7460 | if (!aggregate->as_set) | |
7461 | continue; | |
7462 | ||
7463 | /* | |
7464 | * as-set aggregate route generate origin, as path, | |
7465 | * and community aggregation. | |
7466 | */ | |
7467 | /* Compute aggregate route's as-path. | |
7468 | */ | |
7469 | bgp_compute_aggregate_aspath_hash(aggregate, | |
7470 | pi->attr->aspath); | |
7471 | ||
7472 | /* Compute aggregate route's community. | |
7473 | */ | |
7474 | if (bgp_attr_get_community(pi->attr)) | |
7475 | bgp_compute_aggregate_community_hash( | |
7476 | aggregate, | |
7477 | bgp_attr_get_community(pi->attr)); | |
7478 | ||
7479 | /* Compute aggregate route's extended community. | |
7480 | */ | |
7481 | if (bgp_attr_get_ecommunity(pi->attr)) | |
7482 | bgp_compute_aggregate_ecommunity_hash( | |
7483 | aggregate, | |
7484 | bgp_attr_get_ecommunity(pi->attr)); | |
7485 | ||
7486 | /* Compute aggregate route's large community. | |
7487 | */ | |
7488 | if (bgp_attr_get_lcommunity(pi->attr)) | |
7489 | bgp_compute_aggregate_lcommunity_hash( | |
7490 | aggregate, | |
7491 | bgp_attr_get_lcommunity(pi->attr)); | |
7492 | } | |
7493 | if (match) | |
7494 | bgp_process(bgp, dest, afi, safi); | |
7495 | } | |
7496 | if (aggregate->as_set) { | |
7497 | bgp_compute_aggregate_aspath_val(aggregate); | |
7498 | bgp_compute_aggregate_community_val(aggregate); | |
7499 | bgp_compute_aggregate_ecommunity_val(aggregate); | |
7500 | bgp_compute_aggregate_lcommunity_val(aggregate); | |
7501 | } | |
7502 | ||
7503 | ||
7504 | bgp_dest_unlock_node(top); | |
7505 | ||
7506 | ||
7507 | if (aggregate->incomplete_origin_count > 0) | |
7508 | origin = BGP_ORIGIN_INCOMPLETE; | |
7509 | else if (aggregate->egp_origin_count > 0) | |
7510 | origin = BGP_ORIGIN_EGP; | |
7511 | ||
7512 | if (aggregate->origin != BGP_ORIGIN_UNSPECIFIED) | |
7513 | origin = aggregate->origin; | |
7514 | ||
7515 | if (aggregate->as_set) { | |
7516 | if (aggregate->aspath) | |
7517 | /* Retrieve aggregate route's as-path. | |
7518 | */ | |
7519 | aspath = aspath_dup(aggregate->aspath); | |
7520 | ||
7521 | if (aggregate->community) | |
7522 | /* Retrieve aggregate route's community. | |
7523 | */ | |
7524 | community = community_dup(aggregate->community); | |
7525 | ||
7526 | if (aggregate->ecommunity) | |
7527 | /* Retrieve aggregate route's ecommunity. | |
7528 | */ | |
7529 | ecommunity = ecommunity_dup(aggregate->ecommunity); | |
7530 | ||
7531 | if (aggregate->lcommunity) | |
7532 | /* Retrieve aggregate route's lcommunity. | |
7533 | */ | |
7534 | lcommunity = lcommunity_dup(aggregate->lcommunity); | |
7535 | } | |
7536 | ||
7537 | bgp_aggregate_install(bgp, afi, safi, p, origin, aspath, community, | |
7538 | ecommunity, lcommunity, atomic_aggregate, | |
7539 | aggregate); | |
7540 | } | |
7541 | ||
7542 | void bgp_aggregate_delete(struct bgp *bgp, const struct prefix *p, afi_t afi, | |
7543 | safi_t safi, struct bgp_aggregate *aggregate) | |
7544 | { | |
7545 | struct bgp_table *table; | |
7546 | struct bgp_dest *top; | |
7547 | struct bgp_dest *dest; | |
7548 | struct bgp_path_info *pi; | |
7549 | unsigned long match; | |
7550 | ||
7551 | table = bgp->rib[afi][safi]; | |
7552 | ||
7553 | /* If routes exists below this node, generate aggregate routes. */ | |
7554 | top = bgp_node_get(table, p); | |
7555 | for (dest = bgp_node_get(table, p); dest; | |
7556 | dest = bgp_route_next_until(dest, top)) { | |
7557 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
7558 | ||
7559 | if (dest_p->prefixlen <= p->prefixlen) | |
7560 | continue; | |
7561 | match = 0; | |
7562 | ||
7563 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
7564 | if (BGP_PATH_HOLDDOWN(pi)) | |
7565 | continue; | |
7566 | ||
7567 | if (pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7568 | continue; | |
7569 | ||
7570 | /* | |
7571 | * This route is suppressed: attempt to unsuppress it. | |
7572 | * | |
7573 | * `aggr_unsuppress_path` will fail if this particular | |
7574 | * aggregate route was not the suppressor. | |
7575 | */ | |
7576 | if (pi->extra && pi->extra->aggr_suppressors && | |
7577 | listcount(pi->extra->aggr_suppressors)) { | |
7578 | if (aggr_unsuppress_path(aggregate, pi)) | |
7579 | match++; | |
7580 | } | |
7581 | ||
7582 | aggregate->count--; | |
7583 | ||
7584 | if (pi->attr->origin == BGP_ORIGIN_INCOMPLETE) | |
7585 | aggregate->incomplete_origin_count--; | |
7586 | else if (pi->attr->origin == BGP_ORIGIN_EGP) | |
7587 | aggregate->egp_origin_count--; | |
7588 | ||
7589 | if (aggregate->as_set) { | |
7590 | /* Remove as-path from aggregate. | |
7591 | */ | |
7592 | bgp_remove_aspath_from_aggregate_hash( | |
7593 | aggregate, | |
7594 | pi->attr->aspath); | |
7595 | ||
7596 | if (bgp_attr_get_community(pi->attr)) | |
7597 | /* Remove community from aggregate. | |
7598 | */ | |
7599 | bgp_remove_comm_from_aggregate_hash( | |
7600 | aggregate, | |
7601 | bgp_attr_get_community( | |
7602 | pi->attr)); | |
7603 | ||
7604 | if (bgp_attr_get_ecommunity(pi->attr)) | |
7605 | /* Remove ecommunity from aggregate. | |
7606 | */ | |
7607 | bgp_remove_ecomm_from_aggregate_hash( | |
7608 | aggregate, | |
7609 | bgp_attr_get_ecommunity( | |
7610 | pi->attr)); | |
7611 | ||
7612 | if (bgp_attr_get_lcommunity(pi->attr)) | |
7613 | /* Remove lcommunity from aggregate. | |
7614 | */ | |
7615 | bgp_remove_lcomm_from_aggregate_hash( | |
7616 | aggregate, | |
7617 | bgp_attr_get_lcommunity( | |
7618 | pi->attr)); | |
7619 | } | |
7620 | } | |
7621 | ||
7622 | /* If this node was suppressed, process the change. */ | |
7623 | if (match) | |
7624 | bgp_process(bgp, dest, afi, safi); | |
7625 | } | |
7626 | if (aggregate->as_set) { | |
7627 | aspath_free(aggregate->aspath); | |
7628 | aggregate->aspath = NULL; | |
7629 | if (aggregate->community) | |
7630 | community_free(&aggregate->community); | |
7631 | if (aggregate->ecommunity) | |
7632 | ecommunity_free(&aggregate->ecommunity); | |
7633 | if (aggregate->lcommunity) | |
7634 | lcommunity_free(&aggregate->lcommunity); | |
7635 | } | |
7636 | ||
7637 | bgp_dest_unlock_node(top); | |
7638 | } | |
7639 | ||
7640 | static void bgp_add_route_to_aggregate(struct bgp *bgp, | |
7641 | const struct prefix *aggr_p, | |
7642 | struct bgp_path_info *pinew, afi_t afi, | |
7643 | safi_t safi, | |
7644 | struct bgp_aggregate *aggregate) | |
7645 | { | |
7646 | uint8_t origin; | |
7647 | struct aspath *aspath = NULL; | |
7648 | uint8_t atomic_aggregate = 0; | |
7649 | struct community *community = NULL; | |
7650 | struct ecommunity *ecommunity = NULL; | |
7651 | struct lcommunity *lcommunity = NULL; | |
7652 | ||
7653 | /* If the bgp instance is being deleted or self peer is deleted | |
7654 | * then do not create aggregate route | |
7655 | */ | |
7656 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS) | |
7657 | || (bgp->peer_self == NULL)) | |
7658 | return; | |
7659 | ||
7660 | /* ORIGIN attribute: If at least one route among routes that are | |
7661 | * aggregated has ORIGIN with the value INCOMPLETE, then the | |
7662 | * aggregated route must have the ORIGIN attribute with the value | |
7663 | * INCOMPLETE. Otherwise, if at least one route among routes that | |
7664 | * are aggregated has ORIGIN with the value EGP, then the aggregated | |
7665 | * route must have the origin attribute with the value EGP. In all | |
7666 | * other case the value of the ORIGIN attribute of the aggregated | |
7667 | * route is INTERNAL. | |
7668 | */ | |
7669 | origin = BGP_ORIGIN_IGP; | |
7670 | ||
7671 | aggregate->count++; | |
7672 | ||
7673 | /* | |
7674 | * This must be called before `summary` check to avoid | |
7675 | * "suppressing" twice. | |
7676 | */ | |
7677 | if (aggregate->match_med) | |
7678 | bgp_aggregate_med_update(aggregate, bgp, aggr_p, afi, safi, | |
7679 | pinew, true); | |
7680 | ||
7681 | if (aggregate->summary_only && AGGREGATE_MED_VALID(aggregate)) | |
7682 | aggr_suppress_path(aggregate, pinew); | |
7683 | ||
7684 | if (aggregate->suppress_map_name && AGGREGATE_MED_VALID(aggregate) | |
7685 | && aggr_suppress_map_test(bgp, aggregate, pinew)) | |
7686 | aggr_suppress_path(aggregate, pinew); | |
7687 | ||
7688 | switch (pinew->attr->origin) { | |
7689 | case BGP_ORIGIN_INCOMPLETE: | |
7690 | aggregate->incomplete_origin_count++; | |
7691 | break; | |
7692 | case BGP_ORIGIN_EGP: | |
7693 | aggregate->egp_origin_count++; | |
7694 | break; | |
7695 | default: | |
7696 | /* Do nothing. | |
7697 | */ | |
7698 | break; | |
7699 | } | |
7700 | ||
7701 | if (aggregate->incomplete_origin_count > 0) | |
7702 | origin = BGP_ORIGIN_INCOMPLETE; | |
7703 | else if (aggregate->egp_origin_count > 0) | |
7704 | origin = BGP_ORIGIN_EGP; | |
7705 | ||
7706 | if (aggregate->origin != BGP_ORIGIN_UNSPECIFIED) | |
7707 | origin = aggregate->origin; | |
7708 | ||
7709 | if (aggregate->as_set) { | |
7710 | /* Compute aggregate route's as-path. | |
7711 | */ | |
7712 | bgp_compute_aggregate_aspath(aggregate, | |
7713 | pinew->attr->aspath); | |
7714 | ||
7715 | /* Compute aggregate route's community. | |
7716 | */ | |
7717 | if (bgp_attr_get_community(pinew->attr)) | |
7718 | bgp_compute_aggregate_community( | |
7719 | aggregate, bgp_attr_get_community(pinew->attr)); | |
7720 | ||
7721 | /* Compute aggregate route's extended community. | |
7722 | */ | |
7723 | if (bgp_attr_get_ecommunity(pinew->attr)) | |
7724 | bgp_compute_aggregate_ecommunity( | |
7725 | aggregate, | |
7726 | bgp_attr_get_ecommunity(pinew->attr)); | |
7727 | ||
7728 | /* Compute aggregate route's large community. | |
7729 | */ | |
7730 | if (bgp_attr_get_lcommunity(pinew->attr)) | |
7731 | bgp_compute_aggregate_lcommunity( | |
7732 | aggregate, | |
7733 | bgp_attr_get_lcommunity(pinew->attr)); | |
7734 | ||
7735 | /* Retrieve aggregate route's as-path. | |
7736 | */ | |
7737 | if (aggregate->aspath) | |
7738 | aspath = aspath_dup(aggregate->aspath); | |
7739 | ||
7740 | /* Retrieve aggregate route's community. | |
7741 | */ | |
7742 | if (aggregate->community) | |
7743 | community = community_dup(aggregate->community); | |
7744 | ||
7745 | /* Retrieve aggregate route's ecommunity. | |
7746 | */ | |
7747 | if (aggregate->ecommunity) | |
7748 | ecommunity = ecommunity_dup(aggregate->ecommunity); | |
7749 | ||
7750 | /* Retrieve aggregate route's lcommunity. | |
7751 | */ | |
7752 | if (aggregate->lcommunity) | |
7753 | lcommunity = lcommunity_dup(aggregate->lcommunity); | |
7754 | } | |
7755 | ||
7756 | bgp_aggregate_install(bgp, afi, safi, aggr_p, origin, | |
7757 | aspath, community, ecommunity, | |
7758 | lcommunity, atomic_aggregate, aggregate); | |
7759 | } | |
7760 | ||
7761 | static void bgp_remove_route_from_aggregate(struct bgp *bgp, afi_t afi, | |
7762 | safi_t safi, | |
7763 | struct bgp_path_info *pi, | |
7764 | struct bgp_aggregate *aggregate, | |
7765 | const struct prefix *aggr_p) | |
7766 | { | |
7767 | uint8_t origin; | |
7768 | struct aspath *aspath = NULL; | |
7769 | uint8_t atomic_aggregate = 0; | |
7770 | struct community *community = NULL; | |
7771 | struct ecommunity *ecommunity = NULL; | |
7772 | struct lcommunity *lcommunity = NULL; | |
7773 | unsigned long match = 0; | |
7774 | ||
7775 | /* If the bgp instance is being deleted or self peer is deleted | |
7776 | * then do not create aggregate route | |
7777 | */ | |
7778 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS) | |
7779 | || (bgp->peer_self == NULL)) | |
7780 | return; | |
7781 | ||
7782 | if (BGP_PATH_HOLDDOWN(pi)) | |
7783 | return; | |
7784 | ||
7785 | if (pi->sub_type == BGP_ROUTE_AGGREGATE) | |
7786 | return; | |
7787 | ||
7788 | if (aggregate->summary_only && AGGREGATE_MED_VALID(aggregate)) | |
7789 | if (aggr_unsuppress_path(aggregate, pi)) | |
7790 | match++; | |
7791 | ||
7792 | if (aggregate->suppress_map_name && AGGREGATE_MED_VALID(aggregate) | |
7793 | && aggr_suppress_map_test(bgp, aggregate, pi)) | |
7794 | if (aggr_unsuppress_path(aggregate, pi)) | |
7795 | match++; | |
7796 | ||
7797 | /* | |
7798 | * This must be called after `summary`, `suppress-map` check to avoid | |
7799 | * "unsuppressing" twice. | |
7800 | */ | |
7801 | if (aggregate->match_med) | |
7802 | bgp_aggregate_med_update(aggregate, bgp, aggr_p, afi, safi, pi, | |
7803 | true); | |
7804 | ||
7805 | if (aggregate->count > 0) | |
7806 | aggregate->count--; | |
7807 | ||
7808 | if (pi->attr->origin == BGP_ORIGIN_INCOMPLETE) | |
7809 | aggregate->incomplete_origin_count--; | |
7810 | else if (pi->attr->origin == BGP_ORIGIN_EGP) | |
7811 | aggregate->egp_origin_count--; | |
7812 | ||
7813 | if (aggregate->as_set) { | |
7814 | /* Remove as-path from aggregate. | |
7815 | */ | |
7816 | bgp_remove_aspath_from_aggregate(aggregate, | |
7817 | pi->attr->aspath); | |
7818 | ||
7819 | if (bgp_attr_get_community(pi->attr)) | |
7820 | /* Remove community from aggregate. | |
7821 | */ | |
7822 | bgp_remove_community_from_aggregate( | |
7823 | aggregate, bgp_attr_get_community(pi->attr)); | |
7824 | ||
7825 | if (bgp_attr_get_ecommunity(pi->attr)) | |
7826 | /* Remove ecommunity from aggregate. | |
7827 | */ | |
7828 | bgp_remove_ecommunity_from_aggregate( | |
7829 | aggregate, bgp_attr_get_ecommunity(pi->attr)); | |
7830 | ||
7831 | if (bgp_attr_get_lcommunity(pi->attr)) | |
7832 | /* Remove lcommunity from aggregate. | |
7833 | */ | |
7834 | bgp_remove_lcommunity_from_aggregate( | |
7835 | aggregate, bgp_attr_get_lcommunity(pi->attr)); | |
7836 | } | |
7837 | ||
7838 | /* If this node was suppressed, process the change. */ | |
7839 | if (match) | |
7840 | bgp_process(bgp, pi->net, afi, safi); | |
7841 | ||
7842 | origin = BGP_ORIGIN_IGP; | |
7843 | if (aggregate->incomplete_origin_count > 0) | |
7844 | origin = BGP_ORIGIN_INCOMPLETE; | |
7845 | else if (aggregate->egp_origin_count > 0) | |
7846 | origin = BGP_ORIGIN_EGP; | |
7847 | ||
7848 | if (aggregate->origin != BGP_ORIGIN_UNSPECIFIED) | |
7849 | origin = aggregate->origin; | |
7850 | ||
7851 | if (aggregate->as_set) { | |
7852 | /* Retrieve aggregate route's as-path. | |
7853 | */ | |
7854 | if (aggregate->aspath) | |
7855 | aspath = aspath_dup(aggregate->aspath); | |
7856 | ||
7857 | /* Retrieve aggregate route's community. | |
7858 | */ | |
7859 | if (aggregate->community) | |
7860 | community = community_dup(aggregate->community); | |
7861 | ||
7862 | /* Retrieve aggregate route's ecommunity. | |
7863 | */ | |
7864 | if (aggregate->ecommunity) | |
7865 | ecommunity = ecommunity_dup(aggregate->ecommunity); | |
7866 | ||
7867 | /* Retrieve aggregate route's lcommunity. | |
7868 | */ | |
7869 | if (aggregate->lcommunity) | |
7870 | lcommunity = lcommunity_dup(aggregate->lcommunity); | |
7871 | } | |
7872 | ||
7873 | bgp_aggregate_install(bgp, afi, safi, aggr_p, origin, | |
7874 | aspath, community, ecommunity, | |
7875 | lcommunity, atomic_aggregate, aggregate); | |
7876 | } | |
7877 | ||
7878 | void bgp_aggregate_increment(struct bgp *bgp, const struct prefix *p, | |
7879 | struct bgp_path_info *pi, afi_t afi, safi_t safi) | |
7880 | { | |
7881 | struct bgp_dest *child; | |
7882 | struct bgp_dest *dest; | |
7883 | struct bgp_aggregate *aggregate; | |
7884 | struct bgp_table *table; | |
7885 | ||
7886 | table = bgp->aggregate[afi][safi]; | |
7887 | ||
7888 | /* No aggregates configured. */ | |
7889 | if (bgp_table_top_nolock(table) == NULL) | |
7890 | return; | |
7891 | ||
7892 | if (p->prefixlen == 0) | |
7893 | return; | |
7894 | ||
7895 | if (BGP_PATH_HOLDDOWN(pi)) | |
7896 | return; | |
7897 | ||
7898 | /* If suppress fib is enabled and route not installed | |
7899 | * in FIB, do not update the aggregate route | |
7900 | */ | |
7901 | if (!bgp_check_advertise(bgp, pi->net)) | |
7902 | return; | |
7903 | ||
7904 | child = bgp_node_get(table, p); | |
7905 | ||
7906 | /* Aggregate address configuration check. */ | |
7907 | for (dest = child; dest; dest = bgp_dest_parent_nolock(dest)) { | |
7908 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
7909 | ||
7910 | aggregate = bgp_dest_get_bgp_aggregate_info(dest); | |
7911 | if (aggregate != NULL && dest_p->prefixlen < p->prefixlen) { | |
7912 | bgp_add_route_to_aggregate(bgp, dest_p, pi, afi, safi, | |
7913 | aggregate); | |
7914 | } | |
7915 | } | |
7916 | bgp_dest_unlock_node(child); | |
7917 | } | |
7918 | ||
7919 | void bgp_aggregate_decrement(struct bgp *bgp, const struct prefix *p, | |
7920 | struct bgp_path_info *del, afi_t afi, safi_t safi) | |
7921 | { | |
7922 | struct bgp_dest *child; | |
7923 | struct bgp_dest *dest; | |
7924 | struct bgp_aggregate *aggregate; | |
7925 | struct bgp_table *table; | |
7926 | ||
7927 | table = bgp->aggregate[afi][safi]; | |
7928 | ||
7929 | /* No aggregates configured. */ | |
7930 | if (bgp_table_top_nolock(table) == NULL) | |
7931 | return; | |
7932 | ||
7933 | if (p->prefixlen == 0) | |
7934 | return; | |
7935 | ||
7936 | child = bgp_node_get(table, p); | |
7937 | ||
7938 | /* Aggregate address configuration check. */ | |
7939 | for (dest = child; dest; dest = bgp_dest_parent_nolock(dest)) { | |
7940 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
7941 | ||
7942 | aggregate = bgp_dest_get_bgp_aggregate_info(dest); | |
7943 | if (aggregate != NULL && dest_p->prefixlen < p->prefixlen) { | |
7944 | bgp_remove_route_from_aggregate(bgp, afi, safi, del, | |
7945 | aggregate, dest_p); | |
7946 | } | |
7947 | } | |
7948 | bgp_dest_unlock_node(child); | |
7949 | } | |
7950 | ||
7951 | /* Aggregate route attribute. */ | |
7952 | #define AGGREGATE_SUMMARY_ONLY 1 | |
7953 | #define AGGREGATE_AS_SET 1 | |
7954 | #define AGGREGATE_AS_UNSET 0 | |
7955 | ||
7956 | static const char *bgp_origin2str(uint8_t origin) | |
7957 | { | |
7958 | switch (origin) { | |
7959 | case BGP_ORIGIN_IGP: | |
7960 | return "igp"; | |
7961 | case BGP_ORIGIN_EGP: | |
7962 | return "egp"; | |
7963 | case BGP_ORIGIN_INCOMPLETE: | |
7964 | return "incomplete"; | |
7965 | } | |
7966 | return "n/a"; | |
7967 | } | |
7968 | ||
7969 | static const char *bgp_rpki_validation2str(enum rpki_states v_state) | |
7970 | { | |
7971 | switch (v_state) { | |
7972 | case RPKI_NOT_BEING_USED: | |
7973 | return "not used"; | |
7974 | case RPKI_VALID: | |
7975 | return "valid"; | |
7976 | case RPKI_NOTFOUND: | |
7977 | return "not found"; | |
7978 | case RPKI_INVALID: | |
7979 | return "invalid"; | |
7980 | } | |
7981 | ||
7982 | assert(!"We should never get here this is a dev escape"); | |
7983 | return "ERROR"; | |
7984 | } | |
7985 | ||
7986 | static int bgp_aggregate_unset(struct vty *vty, const char *prefix_str, | |
7987 | afi_t afi, safi_t safi) | |
7988 | { | |
7989 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
7990 | int ret; | |
7991 | struct prefix p; | |
7992 | struct bgp_dest *dest; | |
7993 | struct bgp_aggregate *aggregate; | |
7994 | ||
7995 | /* Convert string to prefix structure. */ | |
7996 | ret = str2prefix(prefix_str, &p); | |
7997 | if (!ret) { | |
7998 | vty_out(vty, "Malformed prefix\n"); | |
7999 | return CMD_WARNING_CONFIG_FAILED; | |
8000 | } | |
8001 | apply_mask(&p); | |
8002 | ||
8003 | /* Old configuration check. */ | |
8004 | dest = bgp_node_lookup(bgp->aggregate[afi][safi], &p); | |
8005 | if (!dest) { | |
8006 | vty_out(vty, | |
8007 | "%% There is no aggregate-address configuration.\n"); | |
8008 | return CMD_WARNING_CONFIG_FAILED; | |
8009 | } | |
8010 | ||
8011 | aggregate = bgp_dest_get_bgp_aggregate_info(dest); | |
8012 | bgp_aggregate_delete(bgp, &p, afi, safi, aggregate); | |
8013 | bgp_aggregate_install(bgp, afi, safi, &p, 0, NULL, NULL, | |
8014 | NULL, NULL, 0, aggregate); | |
8015 | ||
8016 | /* Unlock aggregate address configuration. */ | |
8017 | bgp_dest_set_bgp_aggregate_info(dest, NULL); | |
8018 | ||
8019 | if (aggregate->community) | |
8020 | community_free(&aggregate->community); | |
8021 | ||
8022 | if (aggregate->community_hash) { | |
8023 | /* Delete all communities in the hash. | |
8024 | */ | |
8025 | hash_clean(aggregate->community_hash, | |
8026 | bgp_aggr_community_remove); | |
8027 | /* Free up the community_hash. | |
8028 | */ | |
8029 | hash_free(aggregate->community_hash); | |
8030 | } | |
8031 | ||
8032 | if (aggregate->ecommunity) | |
8033 | ecommunity_free(&aggregate->ecommunity); | |
8034 | ||
8035 | if (aggregate->ecommunity_hash) { | |
8036 | /* Delete all ecommunities in the hash. | |
8037 | */ | |
8038 | hash_clean(aggregate->ecommunity_hash, | |
8039 | bgp_aggr_ecommunity_remove); | |
8040 | /* Free up the ecommunity_hash. | |
8041 | */ | |
8042 | hash_free(aggregate->ecommunity_hash); | |
8043 | } | |
8044 | ||
8045 | if (aggregate->lcommunity) | |
8046 | lcommunity_free(&aggregate->lcommunity); | |
8047 | ||
8048 | if (aggregate->lcommunity_hash) { | |
8049 | /* Delete all lcommunities in the hash. | |
8050 | */ | |
8051 | hash_clean(aggregate->lcommunity_hash, | |
8052 | bgp_aggr_lcommunity_remove); | |
8053 | /* Free up the lcommunity_hash. | |
8054 | */ | |
8055 | hash_free(aggregate->lcommunity_hash); | |
8056 | } | |
8057 | ||
8058 | if (aggregate->aspath) | |
8059 | aspath_free(aggregate->aspath); | |
8060 | ||
8061 | if (aggregate->aspath_hash) { | |
8062 | /* Delete all as-paths in the hash. | |
8063 | */ | |
8064 | hash_clean(aggregate->aspath_hash, | |
8065 | bgp_aggr_aspath_remove); | |
8066 | /* Free up the aspath_hash. | |
8067 | */ | |
8068 | hash_free(aggregate->aspath_hash); | |
8069 | } | |
8070 | ||
8071 | bgp_aggregate_free(aggregate); | |
8072 | bgp_dest_unlock_node(dest); | |
8073 | bgp_dest_unlock_node(dest); | |
8074 | ||
8075 | return CMD_SUCCESS; | |
8076 | } | |
8077 | ||
8078 | static int bgp_aggregate_set(struct vty *vty, const char *prefix_str, afi_t afi, | |
8079 | safi_t safi, const char *rmap, | |
8080 | uint8_t summary_only, uint8_t as_set, | |
8081 | uint8_t origin, bool match_med, | |
8082 | const char *suppress_map) | |
8083 | { | |
8084 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
8085 | int ret; | |
8086 | struct prefix p; | |
8087 | struct bgp_dest *dest; | |
8088 | struct bgp_aggregate *aggregate; | |
8089 | uint8_t as_set_new = as_set; | |
8090 | ||
8091 | if (suppress_map && summary_only) { | |
8092 | vty_out(vty, | |
8093 | "'summary-only' and 'suppress-map' can't be used at the same time\n"); | |
8094 | return CMD_WARNING_CONFIG_FAILED; | |
8095 | } | |
8096 | ||
8097 | /* Convert string to prefix structure. */ | |
8098 | ret = str2prefix(prefix_str, &p); | |
8099 | if (!ret) { | |
8100 | vty_out(vty, "Malformed prefix\n"); | |
8101 | return CMD_WARNING_CONFIG_FAILED; | |
8102 | } | |
8103 | apply_mask(&p); | |
8104 | ||
8105 | if ((afi == AFI_IP && p.prefixlen == IPV4_MAX_BITLEN) || | |
8106 | (afi == AFI_IP6 && p.prefixlen == IPV6_MAX_BITLEN)) { | |
8107 | vty_out(vty, "Specified prefix: %s will not result in any useful aggregation, disallowing\n", | |
8108 | prefix_str); | |
8109 | return CMD_WARNING_CONFIG_FAILED; | |
8110 | } | |
8111 | ||
8112 | /* Old configuration check. */ | |
8113 | dest = bgp_node_get(bgp->aggregate[afi][safi], &p); | |
8114 | aggregate = bgp_dest_get_bgp_aggregate_info(dest); | |
8115 | ||
8116 | if (aggregate) { | |
8117 | vty_out(vty, "There is already same aggregate network.\n"); | |
8118 | /* try to remove the old entry */ | |
8119 | ret = bgp_aggregate_unset(vty, prefix_str, afi, safi); | |
8120 | if (ret) { | |
8121 | vty_out(vty, "Error deleting aggregate.\n"); | |
8122 | bgp_dest_unlock_node(dest); | |
8123 | return CMD_WARNING_CONFIG_FAILED; | |
8124 | } | |
8125 | } | |
8126 | ||
8127 | /* Make aggregate address structure. */ | |
8128 | aggregate = bgp_aggregate_new(); | |
8129 | aggregate->summary_only = summary_only; | |
8130 | aggregate->match_med = match_med; | |
8131 | ||
8132 | /* Network operators MUST NOT locally generate any new | |
8133 | * announcements containing AS_SET or AS_CONFED_SET. If they have | |
8134 | * announced routes with AS_SET or AS_CONFED_SET in them, then they | |
8135 | * SHOULD withdraw those routes and re-announce routes for the | |
8136 | * aggregate or component prefixes (i.e., the more-specific routes | |
8137 | * subsumed by the previously aggregated route) without AS_SET | |
8138 | * or AS_CONFED_SET in the updates. | |
8139 | */ | |
8140 | if (bgp->reject_as_sets) { | |
8141 | if (as_set == AGGREGATE_AS_SET) { | |
8142 | as_set_new = AGGREGATE_AS_UNSET; | |
8143 | zlog_warn( | |
8144 | "%s: Ignoring as-set because `bgp reject-as-sets` is enabled.", | |
8145 | __func__); | |
8146 | vty_out(vty, | |
8147 | "Ignoring as-set because `bgp reject-as-sets` is enabled.\n"); | |
8148 | } | |
8149 | } | |
8150 | ||
8151 | aggregate->as_set = as_set_new; | |
8152 | aggregate->safi = safi; | |
8153 | /* Override ORIGIN attribute if defined. | |
8154 | * E.g.: Cisco and Juniper set ORIGIN for aggregated address | |
8155 | * to IGP which is not what rfc4271 says. | |
8156 | * This enables the same behavior, optionally. | |
8157 | */ | |
8158 | aggregate->origin = origin; | |
8159 | ||
8160 | if (rmap) { | |
8161 | XFREE(MTYPE_ROUTE_MAP_NAME, aggregate->rmap.name); | |
8162 | route_map_counter_decrement(aggregate->rmap.map); | |
8163 | aggregate->rmap.name = | |
8164 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap); | |
8165 | aggregate->rmap.map = route_map_lookup_by_name(rmap); | |
8166 | route_map_counter_increment(aggregate->rmap.map); | |
8167 | } | |
8168 | ||
8169 | if (suppress_map) { | |
8170 | XFREE(MTYPE_ROUTE_MAP_NAME, aggregate->suppress_map_name); | |
8171 | route_map_counter_decrement(aggregate->suppress_map); | |
8172 | ||
8173 | aggregate->suppress_map_name = | |
8174 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, suppress_map); | |
8175 | aggregate->suppress_map = | |
8176 | route_map_lookup_by_name(aggregate->suppress_map_name); | |
8177 | route_map_counter_increment(aggregate->suppress_map); | |
8178 | } | |
8179 | ||
8180 | bgp_dest_set_bgp_aggregate_info(dest, aggregate); | |
8181 | ||
8182 | /* Aggregate address insert into BGP routing table. */ | |
8183 | bgp_aggregate_route(bgp, &p, afi, safi, aggregate); | |
8184 | ||
8185 | return CMD_SUCCESS; | |
8186 | } | |
8187 | ||
8188 | DEFPY(aggregate_addressv4, aggregate_addressv4_cmd, | |
8189 | "[no] aggregate-address <A.B.C.D/M$prefix|A.B.C.D$addr A.B.C.D$mask> [{" | |
8190 | "as-set$as_set_s" | |
8191 | "|summary-only$summary_only" | |
8192 | "|route-map WORD$rmap_name" | |
8193 | "|origin <egp|igp|incomplete>$origin_s" | |
8194 | "|matching-MED-only$match_med" | |
8195 | "|suppress-map WORD$suppress_map" | |
8196 | "}]", | |
8197 | NO_STR | |
8198 | "Configure BGP aggregate entries\n" | |
8199 | "Aggregate prefix\n" "Aggregate address\n" "Aggregate mask\n" | |
8200 | "Generate AS set path information\n" | |
8201 | "Filter more specific routes from updates\n" | |
8202 | "Apply route map to aggregate network\n" | |
8203 | "Route map name\n" | |
8204 | "BGP origin code\n" | |
8205 | "Remote EGP\n" | |
8206 | "Local IGP\n" | |
8207 | "Unknown heritage\n" | |
8208 | "Only aggregate routes with matching MED\n" | |
8209 | "Suppress the selected more specific routes\n" | |
8210 | "Route map with the route selectors\n") | |
8211 | { | |
8212 | const char *prefix_s = NULL; | |
8213 | safi_t safi = bgp_node_safi(vty); | |
8214 | uint8_t origin = BGP_ORIGIN_UNSPECIFIED; | |
8215 | int as_set = AGGREGATE_AS_UNSET; | |
8216 | char prefix_buf[PREFIX2STR_BUFFER]; | |
8217 | ||
8218 | if (addr_str) { | |
8219 | if (netmask_str2prefix_str(addr_str, mask_str, prefix_buf, | |
8220 | sizeof(prefix_buf)) | |
8221 | == 0) { | |
8222 | vty_out(vty, "%% Inconsistent address and mask\n"); | |
8223 | return CMD_WARNING_CONFIG_FAILED; | |
8224 | } | |
8225 | prefix_s = prefix_buf; | |
8226 | } else | |
8227 | prefix_s = prefix_str; | |
8228 | ||
8229 | if (origin_s) { | |
8230 | if (strcmp(origin_s, "egp") == 0) | |
8231 | origin = BGP_ORIGIN_EGP; | |
8232 | else if (strcmp(origin_s, "igp") == 0) | |
8233 | origin = BGP_ORIGIN_IGP; | |
8234 | else if (strcmp(origin_s, "incomplete") == 0) | |
8235 | origin = BGP_ORIGIN_INCOMPLETE; | |
8236 | } | |
8237 | ||
8238 | if (as_set_s) | |
8239 | as_set = AGGREGATE_AS_SET; | |
8240 | ||
8241 | /* Handle configuration removal, otherwise installation. */ | |
8242 | if (no) | |
8243 | return bgp_aggregate_unset(vty, prefix_s, AFI_IP, safi); | |
8244 | ||
8245 | return bgp_aggregate_set(vty, prefix_s, AFI_IP, safi, rmap_name, | |
8246 | summary_only != NULL, as_set, origin, | |
8247 | match_med != NULL, suppress_map); | |
8248 | } | |
8249 | ||
8250 | DEFPY(aggregate_addressv6, aggregate_addressv6_cmd, | |
8251 | "[no] aggregate-address X:X::X:X/M$prefix [{" | |
8252 | "as-set$as_set_s" | |
8253 | "|summary-only$summary_only" | |
8254 | "|route-map WORD$rmap_name" | |
8255 | "|origin <egp|igp|incomplete>$origin_s" | |
8256 | "|matching-MED-only$match_med" | |
8257 | "|suppress-map WORD$suppress_map" | |
8258 | "}]", | |
8259 | NO_STR | |
8260 | "Configure BGP aggregate entries\n" | |
8261 | "Aggregate prefix\n" | |
8262 | "Generate AS set path information\n" | |
8263 | "Filter more specific routes from updates\n" | |
8264 | "Apply route map to aggregate network\n" | |
8265 | "Route map name\n" | |
8266 | "BGP origin code\n" | |
8267 | "Remote EGP\n" | |
8268 | "Local IGP\n" | |
8269 | "Unknown heritage\n" | |
8270 | "Only aggregate routes with matching MED\n" | |
8271 | "Suppress the selected more specific routes\n" | |
8272 | "Route map with the route selectors\n") | |
8273 | { | |
8274 | uint8_t origin = BGP_ORIGIN_UNSPECIFIED; | |
8275 | int as_set = AGGREGATE_AS_UNSET; | |
8276 | ||
8277 | if (origin_s) { | |
8278 | if (strcmp(origin_s, "egp") == 0) | |
8279 | origin = BGP_ORIGIN_EGP; | |
8280 | else if (strcmp(origin_s, "igp") == 0) | |
8281 | origin = BGP_ORIGIN_IGP; | |
8282 | else if (strcmp(origin_s, "incomplete") == 0) | |
8283 | origin = BGP_ORIGIN_INCOMPLETE; | |
8284 | } | |
8285 | ||
8286 | if (as_set_s) | |
8287 | as_set = AGGREGATE_AS_SET; | |
8288 | ||
8289 | /* Handle configuration removal, otherwise installation. */ | |
8290 | if (no) | |
8291 | return bgp_aggregate_unset(vty, prefix_str, AFI_IP6, | |
8292 | SAFI_UNICAST); | |
8293 | ||
8294 | return bgp_aggregate_set(vty, prefix_str, AFI_IP6, SAFI_UNICAST, | |
8295 | rmap_name, summary_only != NULL, as_set, | |
8296 | origin, match_med != NULL, suppress_map); | |
8297 | } | |
8298 | ||
8299 | /* Redistribute route treatment. */ | |
8300 | void bgp_redistribute_add(struct bgp *bgp, struct prefix *p, | |
8301 | const union g_addr *nexthop, ifindex_t ifindex, | |
8302 | enum nexthop_types_t nhtype, uint8_t distance, | |
8303 | enum blackhole_type bhtype, uint32_t metric, | |
8304 | uint8_t type, unsigned short instance, | |
8305 | route_tag_t tag) | |
8306 | { | |
8307 | struct bgp_path_info *new; | |
8308 | struct bgp_path_info *bpi; | |
8309 | struct bgp_path_info rmap_path; | |
8310 | struct bgp_dest *bn; | |
8311 | struct attr attr; | |
8312 | struct attr *new_attr; | |
8313 | afi_t afi; | |
8314 | route_map_result_t ret; | |
8315 | struct bgp_redist *red; | |
8316 | ||
8317 | /* Make default attribute. */ | |
8318 | bgp_attr_default_set(&attr, BGP_ORIGIN_INCOMPLETE); | |
8319 | /* | |
8320 | * This must not be NULL to satisfy Coverity SA | |
8321 | */ | |
8322 | assert(attr.aspath); | |
8323 | ||
8324 | switch (nhtype) { | |
8325 | case NEXTHOP_TYPE_IFINDEX: | |
8326 | break; | |
8327 | case NEXTHOP_TYPE_IPV4: | |
8328 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
8329 | attr.nexthop = nexthop->ipv4; | |
8330 | break; | |
8331 | case NEXTHOP_TYPE_IPV6: | |
8332 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
8333 | attr.mp_nexthop_global = nexthop->ipv6; | |
8334 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL; | |
8335 | break; | |
8336 | case NEXTHOP_TYPE_BLACKHOLE: | |
8337 | switch (p->family) { | |
8338 | case AF_INET: | |
8339 | attr.nexthop.s_addr = INADDR_ANY; | |
8340 | break; | |
8341 | case AF_INET6: | |
8342 | memset(&attr.mp_nexthop_global, 0, | |
8343 | sizeof(attr.mp_nexthop_global)); | |
8344 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL; | |
8345 | break; | |
8346 | } | |
8347 | attr.bh_type = bhtype; | |
8348 | break; | |
8349 | } | |
8350 | attr.nh_type = nhtype; | |
8351 | attr.nh_ifindex = ifindex; | |
8352 | ||
8353 | attr.med = metric; | |
8354 | attr.distance = distance; | |
8355 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC); | |
8356 | attr.tag = tag; | |
8357 | ||
8358 | afi = family2afi(p->family); | |
8359 | ||
8360 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
8361 | if (red) { | |
8362 | struct attr attr_new; | |
8363 | ||
8364 | /* Copy attribute for modification. */ | |
8365 | attr_new = attr; | |
8366 | ||
8367 | if (red->redist_metric_flag) | |
8368 | attr_new.med = red->redist_metric; | |
8369 | ||
8370 | /* Apply route-map. */ | |
8371 | if (red->rmap.name) { | |
8372 | memset(&rmap_path, 0, sizeof(struct bgp_path_info)); | |
8373 | rmap_path.peer = bgp->peer_self; | |
8374 | rmap_path.attr = &attr_new; | |
8375 | ||
8376 | SET_FLAG(bgp->peer_self->rmap_type, | |
8377 | PEER_RMAP_TYPE_REDISTRIBUTE); | |
8378 | ||
8379 | ret = route_map_apply(red->rmap.map, p, &rmap_path); | |
8380 | ||
8381 | bgp->peer_self->rmap_type = 0; | |
8382 | ||
8383 | if (ret == RMAP_DENYMATCH) { | |
8384 | /* Free uninterned attribute. */ | |
8385 | bgp_attr_flush(&attr_new); | |
8386 | ||
8387 | /* Unintern original. */ | |
8388 | aspath_unintern(&attr.aspath); | |
8389 | bgp_redistribute_delete(bgp, p, type, instance); | |
8390 | return; | |
8391 | } | |
8392 | } | |
8393 | ||
8394 | if (bgp_in_graceful_shutdown(bgp)) | |
8395 | bgp_attr_add_gshut_community(&attr_new); | |
8396 | ||
8397 | bn = bgp_afi_node_get(bgp->rib[afi][SAFI_UNICAST], afi, | |
8398 | SAFI_UNICAST, p, NULL); | |
8399 | ||
8400 | new_attr = bgp_attr_intern(&attr_new); | |
8401 | ||
8402 | for (bpi = bgp_dest_get_bgp_path_info(bn); bpi; bpi = bpi->next) | |
8403 | if (bpi->peer == bgp->peer_self | |
8404 | && bpi->sub_type == BGP_ROUTE_REDISTRIBUTE) | |
8405 | break; | |
8406 | ||
8407 | if (bpi) { | |
8408 | /* Ensure the (source route) type is updated. */ | |
8409 | bpi->type = type; | |
8410 | if (attrhash_cmp(bpi->attr, new_attr) | |
8411 | && !CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) { | |
8412 | bgp_attr_unintern(&new_attr); | |
8413 | aspath_unintern(&attr.aspath); | |
8414 | bgp_dest_unlock_node(bn); | |
8415 | return; | |
8416 | } else { | |
8417 | /* The attribute is changed. */ | |
8418 | bgp_path_info_set_flag(bn, bpi, | |
8419 | BGP_PATH_ATTR_CHANGED); | |
8420 | ||
8421 | /* Rewrite BGP route information. */ | |
8422 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) | |
8423 | bgp_path_info_restore(bn, bpi); | |
8424 | else | |
8425 | bgp_aggregate_decrement( | |
8426 | bgp, p, bpi, afi, SAFI_UNICAST); | |
8427 | bgp_attr_unintern(&bpi->attr); | |
8428 | bpi->attr = new_attr; | |
8429 | bpi->uptime = bgp_clock(); | |
8430 | ||
8431 | /* Process change. */ | |
8432 | bgp_aggregate_increment(bgp, p, bpi, afi, | |
8433 | SAFI_UNICAST); | |
8434 | bgp_process(bgp, bn, afi, SAFI_UNICAST); | |
8435 | bgp_dest_unlock_node(bn); | |
8436 | aspath_unintern(&attr.aspath); | |
8437 | ||
8438 | if ((bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
8439 | || (bgp->inst_type | |
8440 | == BGP_INSTANCE_TYPE_DEFAULT)) { | |
8441 | ||
8442 | vpn_leak_from_vrf_update( | |
8443 | bgp_get_default(), bgp, bpi); | |
8444 | } | |
8445 | return; | |
8446 | } | |
8447 | } | |
8448 | ||
8449 | new = info_make(type, BGP_ROUTE_REDISTRIBUTE, instance, | |
8450 | bgp->peer_self, new_attr, bn); | |
8451 | SET_FLAG(new->flags, BGP_PATH_VALID); | |
8452 | ||
8453 | bgp_aggregate_increment(bgp, p, new, afi, SAFI_UNICAST); | |
8454 | bgp_path_info_add(bn, new); | |
8455 | bgp_dest_unlock_node(bn); | |
8456 | SET_FLAG(bn->flags, BGP_NODE_FIB_INSTALLED); | |
8457 | bgp_process(bgp, bn, afi, SAFI_UNICAST); | |
8458 | ||
8459 | if ((bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
8460 | || (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
8461 | ||
8462 | vpn_leak_from_vrf_update(bgp_get_default(), bgp, new); | |
8463 | } | |
8464 | } | |
8465 | ||
8466 | /* Unintern original. */ | |
8467 | aspath_unintern(&attr.aspath); | |
8468 | } | |
8469 | ||
8470 | void bgp_redistribute_delete(struct bgp *bgp, struct prefix *p, uint8_t type, | |
8471 | unsigned short instance) | |
8472 | { | |
8473 | afi_t afi; | |
8474 | struct bgp_dest *dest; | |
8475 | struct bgp_path_info *pi; | |
8476 | struct bgp_redist *red; | |
8477 | ||
8478 | afi = family2afi(p->family); | |
8479 | ||
8480 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
8481 | if (red) { | |
8482 | dest = bgp_afi_node_get(bgp->rib[afi][SAFI_UNICAST], afi, | |
8483 | SAFI_UNICAST, p, NULL); | |
8484 | ||
8485 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
8486 | if (pi->peer == bgp->peer_self && pi->type == type) | |
8487 | break; | |
8488 | ||
8489 | if (pi) { | |
8490 | if ((bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
8491 | || (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
8492 | ||
8493 | vpn_leak_from_vrf_withdraw(bgp_get_default(), | |
8494 | bgp, pi); | |
8495 | } | |
8496 | bgp_aggregate_decrement(bgp, p, pi, afi, SAFI_UNICAST); | |
8497 | bgp_path_info_delete(dest, pi); | |
8498 | bgp_process(bgp, dest, afi, SAFI_UNICAST); | |
8499 | } | |
8500 | bgp_dest_unlock_node(dest); | |
8501 | } | |
8502 | } | |
8503 | ||
8504 | /* Withdraw specified route type's route. */ | |
8505 | void bgp_redistribute_withdraw(struct bgp *bgp, afi_t afi, int type, | |
8506 | unsigned short instance) | |
8507 | { | |
8508 | struct bgp_dest *dest; | |
8509 | struct bgp_path_info *pi; | |
8510 | struct bgp_table *table; | |
8511 | ||
8512 | table = bgp->rib[afi][SAFI_UNICAST]; | |
8513 | ||
8514 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
8515 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
8516 | if (pi->peer == bgp->peer_self && pi->type == type | |
8517 | && pi->instance == instance) | |
8518 | break; | |
8519 | ||
8520 | if (pi) { | |
8521 | if ((bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
8522 | || (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) { | |
8523 | ||
8524 | vpn_leak_from_vrf_withdraw(bgp_get_default(), | |
8525 | bgp, pi); | |
8526 | } | |
8527 | bgp_aggregate_decrement(bgp, bgp_dest_get_prefix(dest), | |
8528 | pi, afi, SAFI_UNICAST); | |
8529 | bgp_path_info_delete(dest, pi); | |
8530 | bgp_process(bgp, dest, afi, SAFI_UNICAST); | |
8531 | } | |
8532 | } | |
8533 | } | |
8534 | ||
8535 | /* Static function to display route. */ | |
8536 | static void route_vty_out_route(struct bgp_dest *dest, const struct prefix *p, | |
8537 | struct vty *vty, json_object *json, bool wide) | |
8538 | { | |
8539 | int len = 0; | |
8540 | char buf[BUFSIZ]; | |
8541 | ||
8542 | if (p->family == AF_INET) { | |
8543 | if (!json) { | |
8544 | len = vty_out(vty, "%pFX", p); | |
8545 | } else { | |
8546 | json_object_string_add(json, "prefix", | |
8547 | inet_ntop(p->family, | |
8548 | &p->u.prefix, buf, | |
8549 | BUFSIZ)); | |
8550 | json_object_int_add(json, "prefixLen", p->prefixlen); | |
8551 | json_object_string_addf(json, "network", "%pFX", p); | |
8552 | json_object_int_add(json, "version", dest->version); | |
8553 | } | |
8554 | } else if (p->family == AF_ETHERNET) { | |
8555 | len = vty_out(vty, "%pFX", p); | |
8556 | } else if (p->family == AF_EVPN) { | |
8557 | if (!json) | |
8558 | len = vty_out(vty, "%pFX", (struct prefix_evpn *)p); | |
8559 | else | |
8560 | bgp_evpn_route2json((struct prefix_evpn *)p, json); | |
8561 | } else if (p->family == AF_FLOWSPEC) { | |
8562 | route_vty_out_flowspec(vty, p, NULL, | |
8563 | json ? | |
8564 | NLRI_STRING_FORMAT_JSON_SIMPLE : | |
8565 | NLRI_STRING_FORMAT_MIN, json); | |
8566 | } else { | |
8567 | if (!json) | |
8568 | len = vty_out(vty, "%pFX", p); | |
8569 | else { | |
8570 | json_object_string_add(json, "prefix", | |
8571 | inet_ntop(p->family, | |
8572 | &p->u.prefix, buf, | |
8573 | BUFSIZ)); | |
8574 | json_object_int_add(json, "prefixLen", p->prefixlen); | |
8575 | json_object_string_addf(json, "network", "%pFX", p); | |
8576 | json_object_int_add(json, "version", dest->version); | |
8577 | } | |
8578 | } | |
8579 | ||
8580 | if (!json) { | |
8581 | len = wide ? (45 - len) : (17 - len); | |
8582 | if (len < 1) | |
8583 | vty_out(vty, "\n%*s", 20, " "); | |
8584 | else | |
8585 | vty_out(vty, "%*s", len, " "); | |
8586 | } | |
8587 | } | |
8588 | ||
8589 | enum bgp_display_type { | |
8590 | normal_list, | |
8591 | }; | |
8592 | ||
8593 | const char *bgp_path_selection_reason2str(enum bgp_path_selection_reason reason) | |
8594 | { | |
8595 | switch (reason) { | |
8596 | case bgp_path_selection_none: | |
8597 | return "Nothing to Select"; | |
8598 | case bgp_path_selection_first: | |
8599 | return "First path received"; | |
8600 | case bgp_path_selection_evpn_sticky_mac: | |
8601 | return "EVPN Sticky Mac"; | |
8602 | case bgp_path_selection_evpn_seq: | |
8603 | return "EVPN sequence number"; | |
8604 | case bgp_path_selection_evpn_lower_ip: | |
8605 | return "EVPN lower IP"; | |
8606 | case bgp_path_selection_evpn_local_path: | |
8607 | return "EVPN local ES path"; | |
8608 | case bgp_path_selection_evpn_non_proxy: | |
8609 | return "EVPN non proxy"; | |
8610 | case bgp_path_selection_weight: | |
8611 | return "Weight"; | |
8612 | case bgp_path_selection_local_pref: | |
8613 | return "Local Pref"; | |
8614 | case bgp_path_selection_local_route: | |
8615 | return "Local Route"; | |
8616 | case bgp_path_selection_confed_as_path: | |
8617 | return "Confederation based AS Path"; | |
8618 | case bgp_path_selection_as_path: | |
8619 | return "AS Path"; | |
8620 | case bgp_path_selection_origin: | |
8621 | return "Origin"; | |
8622 | case bgp_path_selection_med: | |
8623 | return "MED"; | |
8624 | case bgp_path_selection_peer: | |
8625 | return "Peer Type"; | |
8626 | case bgp_path_selection_confed: | |
8627 | return "Confed Peer Type"; | |
8628 | case bgp_path_selection_igp_metric: | |
8629 | return "IGP Metric"; | |
8630 | case bgp_path_selection_older: | |
8631 | return "Older Path"; | |
8632 | case bgp_path_selection_router_id: | |
8633 | return "Router ID"; | |
8634 | case bgp_path_selection_cluster_length: | |
8635 | return "Cluster length"; | |
8636 | case bgp_path_selection_stale: | |
8637 | return "Path Staleness"; | |
8638 | case bgp_path_selection_local_configured: | |
8639 | return "Locally configured route"; | |
8640 | case bgp_path_selection_neighbor_ip: | |
8641 | return "Neighbor IP"; | |
8642 | case bgp_path_selection_default: | |
8643 | return "Nothing left to compare"; | |
8644 | } | |
8645 | return "Invalid (internal error)"; | |
8646 | } | |
8647 | ||
8648 | /* Print the short form route status for a bgp_path_info */ | |
8649 | static void route_vty_short_status_out(struct vty *vty, | |
8650 | struct bgp_path_info *path, | |
8651 | const struct prefix *p, | |
8652 | json_object *json_path) | |
8653 | { | |
8654 | enum rpki_states rpki_state = RPKI_NOT_BEING_USED; | |
8655 | ||
8656 | if (json_path) { | |
8657 | ||
8658 | /* Route status display. */ | |
8659 | if (CHECK_FLAG(path->flags, BGP_PATH_REMOVED)) | |
8660 | json_object_boolean_true_add(json_path, "removed"); | |
8661 | ||
8662 | if (CHECK_FLAG(path->flags, BGP_PATH_STALE)) | |
8663 | json_object_boolean_true_add(json_path, "stale"); | |
8664 | ||
8665 | if (path->extra && bgp_path_suppressed(path)) | |
8666 | json_object_boolean_true_add(json_path, "suppressed"); | |
8667 | ||
8668 | if (CHECK_FLAG(path->flags, BGP_PATH_VALID) | |
8669 | && !CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
8670 | json_object_boolean_true_add(json_path, "valid"); | |
8671 | ||
8672 | /* Selected */ | |
8673 | if (CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
8674 | json_object_boolean_true_add(json_path, "history"); | |
8675 | ||
8676 | if (CHECK_FLAG(path->flags, BGP_PATH_DAMPED)) | |
8677 | json_object_boolean_true_add(json_path, "damped"); | |
8678 | ||
8679 | if (CHECK_FLAG(path->flags, BGP_PATH_SELECTED)) { | |
8680 | json_object_boolean_true_add(json_path, "bestpath"); | |
8681 | json_object_string_add(json_path, "selectionReason", | |
8682 | bgp_path_selection_reason2str( | |
8683 | path->net->reason)); | |
8684 | } | |
8685 | ||
8686 | if (CHECK_FLAG(path->flags, BGP_PATH_MULTIPATH)) | |
8687 | json_object_boolean_true_add(json_path, "multipath"); | |
8688 | ||
8689 | /* Internal route. */ | |
8690 | if ((path->peer->as) | |
8691 | && (path->peer->as == path->peer->local_as)) | |
8692 | json_object_string_add(json_path, "pathFrom", | |
8693 | "internal"); | |
8694 | else | |
8695 | json_object_string_add(json_path, "pathFrom", | |
8696 | "external"); | |
8697 | ||
8698 | return; | |
8699 | } | |
8700 | ||
8701 | /* RPKI validation state */ | |
8702 | rpki_state = | |
8703 | hook_call(bgp_rpki_prefix_status, path->peer, path->attr, p); | |
8704 | ||
8705 | if (rpki_state == RPKI_VALID) | |
8706 | vty_out(vty, "V"); | |
8707 | else if (rpki_state == RPKI_INVALID) | |
8708 | vty_out(vty, "I"); | |
8709 | else if (rpki_state == RPKI_NOTFOUND) | |
8710 | vty_out(vty, "N"); | |
8711 | ||
8712 | /* Route status display. */ | |
8713 | if (CHECK_FLAG(path->flags, BGP_PATH_REMOVED)) | |
8714 | vty_out(vty, "R"); | |
8715 | else if (CHECK_FLAG(path->flags, BGP_PATH_STALE)) | |
8716 | vty_out(vty, "S"); | |
8717 | else if (bgp_path_suppressed(path)) | |
8718 | vty_out(vty, "s"); | |
8719 | else if (CHECK_FLAG(path->flags, BGP_PATH_VALID) | |
8720 | && !CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
8721 | vty_out(vty, "*"); | |
8722 | else | |
8723 | vty_out(vty, " "); | |
8724 | ||
8725 | /* Selected */ | |
8726 | if (CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
8727 | vty_out(vty, "h"); | |
8728 | else if (CHECK_FLAG(path->flags, BGP_PATH_DAMPED)) | |
8729 | vty_out(vty, "d"); | |
8730 | else if (CHECK_FLAG(path->flags, BGP_PATH_SELECTED)) | |
8731 | vty_out(vty, ">"); | |
8732 | else if (CHECK_FLAG(path->flags, BGP_PATH_MULTIPATH)) | |
8733 | vty_out(vty, "="); | |
8734 | else | |
8735 | vty_out(vty, " "); | |
8736 | ||
8737 | /* Internal route. */ | |
8738 | if (path->peer && (path->peer->as) | |
8739 | && (path->peer->as == path->peer->local_as)) | |
8740 | vty_out(vty, "i"); | |
8741 | else | |
8742 | vty_out(vty, " "); | |
8743 | } | |
8744 | ||
8745 | static char *bgp_nexthop_hostname(struct peer *peer, | |
8746 | struct bgp_nexthop_cache *bnc) | |
8747 | { | |
8748 | if (peer->hostname | |
8749 | && CHECK_FLAG(peer->bgp->flags, BGP_FLAG_SHOW_NEXTHOP_HOSTNAME)) | |
8750 | return peer->hostname; | |
8751 | return NULL; | |
8752 | } | |
8753 | ||
8754 | /* called from terminal list command */ | |
8755 | void route_vty_out(struct vty *vty, const struct prefix *p, | |
8756 | struct bgp_path_info *path, int display, safi_t safi, | |
8757 | json_object *json_paths, bool wide) | |
8758 | { | |
8759 | int len; | |
8760 | struct attr *attr = path->attr; | |
8761 | json_object *json_path = NULL; | |
8762 | json_object *json_nexthops = NULL; | |
8763 | json_object *json_nexthop_global = NULL; | |
8764 | json_object *json_nexthop_ll = NULL; | |
8765 | json_object *json_ext_community = NULL; | |
8766 | char vrf_id_str[VRF_NAMSIZ] = {0}; | |
8767 | bool nexthop_self = | |
8768 | CHECK_FLAG(path->flags, BGP_PATH_ANNC_NH_SELF) ? true : false; | |
8769 | bool nexthop_othervrf = false; | |
8770 | vrf_id_t nexthop_vrfid = VRF_DEFAULT; | |
8771 | const char *nexthop_vrfname = VRF_DEFAULT_NAME; | |
8772 | char *nexthop_hostname = | |
8773 | bgp_nexthop_hostname(path->peer, path->nexthop); | |
8774 | char esi_buf[ESI_STR_LEN]; | |
8775 | ||
8776 | if (json_paths) | |
8777 | json_path = json_object_new_object(); | |
8778 | ||
8779 | /* short status lead text */ | |
8780 | route_vty_short_status_out(vty, path, p, json_path); | |
8781 | ||
8782 | if (!json_paths) { | |
8783 | /* print prefix and mask */ | |
8784 | if (!display) | |
8785 | route_vty_out_route(path->net, p, vty, json_path, wide); | |
8786 | else | |
8787 | vty_out(vty, "%*s", (wide ? 45 : 17), " "); | |
8788 | } else { | |
8789 | route_vty_out_route(path->net, p, vty, json_path, wide); | |
8790 | } | |
8791 | ||
8792 | /* | |
8793 | * If vrf id of nexthop is different from that of prefix, | |
8794 | * set up printable string to append | |
8795 | */ | |
8796 | if (path->extra && path->extra->bgp_orig) { | |
8797 | const char *self = ""; | |
8798 | ||
8799 | if (nexthop_self) | |
8800 | self = "<"; | |
8801 | ||
8802 | nexthop_othervrf = true; | |
8803 | nexthop_vrfid = path->extra->bgp_orig->vrf_id; | |
8804 | ||
8805 | if (path->extra->bgp_orig->vrf_id == VRF_UNKNOWN) | |
8806 | snprintf(vrf_id_str, sizeof(vrf_id_str), | |
8807 | "@%s%s", VRFID_NONE_STR, self); | |
8808 | else | |
8809 | snprintf(vrf_id_str, sizeof(vrf_id_str), "@%u%s", | |
8810 | path->extra->bgp_orig->vrf_id, self); | |
8811 | ||
8812 | if (path->extra->bgp_orig->inst_type | |
8813 | != BGP_INSTANCE_TYPE_DEFAULT) | |
8814 | ||
8815 | nexthop_vrfname = path->extra->bgp_orig->name; | |
8816 | } else { | |
8817 | const char *self = ""; | |
8818 | ||
8819 | if (nexthop_self) | |
8820 | self = "<"; | |
8821 | ||
8822 | snprintf(vrf_id_str, sizeof(vrf_id_str), "%s", self); | |
8823 | } | |
8824 | ||
8825 | /* | |
8826 | * For ENCAP and EVPN routes, nexthop address family is not | |
8827 | * neccessarily the same as the prefix address family. | |
8828 | * Both SAFI_MPLS_VPN and SAFI_ENCAP use the MP nexthop field | |
8829 | * EVPN routes are also exchanged with a MP nexthop. Currently, | |
8830 | * this | |
8831 | * is only IPv4, the value will be present in either | |
8832 | * attr->nexthop or | |
8833 | * attr->mp_nexthop_global_in | |
8834 | */ | |
8835 | if ((safi == SAFI_ENCAP) || (safi == SAFI_MPLS_VPN)) { | |
8836 | char buf[BUFSIZ]; | |
8837 | char nexthop[128]; | |
8838 | int af = NEXTHOP_FAMILY(attr->mp_nexthop_len); | |
8839 | ||
8840 | switch (af) { | |
8841 | case AF_INET: | |
8842 | snprintf(nexthop, sizeof(nexthop), "%s", | |
8843 | inet_ntop(af, &attr->mp_nexthop_global_in, buf, | |
8844 | BUFSIZ)); | |
8845 | break; | |
8846 | case AF_INET6: | |
8847 | snprintf(nexthop, sizeof(nexthop), "%s", | |
8848 | inet_ntop(af, &attr->mp_nexthop_global, buf, | |
8849 | BUFSIZ)); | |
8850 | break; | |
8851 | default: | |
8852 | snprintf(nexthop, sizeof(nexthop), "?"); | |
8853 | break; | |
8854 | } | |
8855 | ||
8856 | if (json_paths) { | |
8857 | json_nexthop_global = json_object_new_object(); | |
8858 | ||
8859 | json_object_string_add(json_nexthop_global, "ip", | |
8860 | nexthop); | |
8861 | ||
8862 | if (path->peer->hostname) | |
8863 | json_object_string_add(json_nexthop_global, | |
8864 | "hostname", | |
8865 | path->peer->hostname); | |
8866 | ||
8867 | json_object_string_add(json_nexthop_global, "afi", | |
8868 | (af == AF_INET) ? "ipv4" | |
8869 | : "ipv6"); | |
8870 | json_object_boolean_true_add(json_nexthop_global, | |
8871 | "used"); | |
8872 | } else { | |
8873 | if (nexthop_hostname) | |
8874 | len = vty_out(vty, "%s(%s)%s", nexthop, | |
8875 | nexthop_hostname, vrf_id_str); | |
8876 | else | |
8877 | len = vty_out(vty, "%s%s", nexthop, vrf_id_str); | |
8878 | ||
8879 | len = wide ? (41 - len) : (16 - len); | |
8880 | if (len < 1) | |
8881 | vty_out(vty, "\n%*s", 36, " "); | |
8882 | else | |
8883 | vty_out(vty, "%*s", len, " "); | |
8884 | } | |
8885 | } else if (safi == SAFI_EVPN) { | |
8886 | if (json_paths) { | |
8887 | json_nexthop_global = json_object_new_object(); | |
8888 | ||
8889 | json_object_string_addf(json_nexthop_global, "ip", | |
8890 | "%pI4", &attr->nexthop); | |
8891 | ||
8892 | if (path->peer->hostname) | |
8893 | json_object_string_add(json_nexthop_global, | |
8894 | "hostname", | |
8895 | path->peer->hostname); | |
8896 | ||
8897 | json_object_string_add(json_nexthop_global, "afi", | |
8898 | "ipv4"); | |
8899 | json_object_boolean_true_add(json_nexthop_global, | |
8900 | "used"); | |
8901 | } else { | |
8902 | if (nexthop_hostname) | |
8903 | len = vty_out(vty, "%pI4(%s)%s", &attr->nexthop, | |
8904 | nexthop_hostname, vrf_id_str); | |
8905 | else | |
8906 | len = vty_out(vty, "%pI4%s", &attr->nexthop, | |
8907 | vrf_id_str); | |
8908 | ||
8909 | len = wide ? (41 - len) : (16 - len); | |
8910 | if (len < 1) | |
8911 | vty_out(vty, "\n%*s", 36, " "); | |
8912 | else | |
8913 | vty_out(vty, "%*s", len, " "); | |
8914 | } | |
8915 | } else if (safi == SAFI_FLOWSPEC) { | |
8916 | if (attr->nexthop.s_addr != INADDR_ANY) { | |
8917 | if (json_paths) { | |
8918 | json_nexthop_global = json_object_new_object(); | |
8919 | ||
8920 | json_object_string_add(json_nexthop_global, | |
8921 | "afi", "ipv4"); | |
8922 | json_object_string_addf(json_nexthop_global, | |
8923 | "ip", "%pI4", | |
8924 | &attr->nexthop); | |
8925 | ||
8926 | if (path->peer->hostname) | |
8927 | json_object_string_add( | |
8928 | json_nexthop_global, "hostname", | |
8929 | path->peer->hostname); | |
8930 | ||
8931 | json_object_boolean_true_add( | |
8932 | json_nexthop_global, | |
8933 | "used"); | |
8934 | } else { | |
8935 | if (nexthop_hostname) | |
8936 | len = vty_out(vty, "%pI4(%s)%s", | |
8937 | &attr->nexthop, | |
8938 | nexthop_hostname, | |
8939 | vrf_id_str); | |
8940 | else | |
8941 | len = vty_out(vty, "%pI4%s", | |
8942 | &attr->nexthop, | |
8943 | vrf_id_str); | |
8944 | ||
8945 | len = wide ? (41 - len) : (16 - len); | |
8946 | if (len < 1) | |
8947 | vty_out(vty, "\n%*s", 36, " "); | |
8948 | else | |
8949 | vty_out(vty, "%*s", len, " "); | |
8950 | } | |
8951 | } | |
8952 | } else if (p->family == AF_INET && !BGP_ATTR_NEXTHOP_AFI_IP6(attr)) { | |
8953 | if (json_paths) { | |
8954 | json_nexthop_global = json_object_new_object(); | |
8955 | ||
8956 | json_object_string_addf(json_nexthop_global, "ip", | |
8957 | "%pI4", &attr->nexthop); | |
8958 | ||
8959 | if (path->peer->hostname) | |
8960 | json_object_string_add(json_nexthop_global, | |
8961 | "hostname", | |
8962 | path->peer->hostname); | |
8963 | ||
8964 | json_object_string_add(json_nexthop_global, "afi", | |
8965 | "ipv4"); | |
8966 | json_object_boolean_true_add(json_nexthop_global, | |
8967 | "used"); | |
8968 | } else { | |
8969 | if (nexthop_hostname) | |
8970 | len = vty_out(vty, "%pI4(%s)%s", &attr->nexthop, | |
8971 | nexthop_hostname, vrf_id_str); | |
8972 | else | |
8973 | len = vty_out(vty, "%pI4%s", &attr->nexthop, | |
8974 | vrf_id_str); | |
8975 | ||
8976 | len = wide ? (41 - len) : (16 - len); | |
8977 | if (len < 1) | |
8978 | vty_out(vty, "\n%*s", 36, " "); | |
8979 | else | |
8980 | vty_out(vty, "%*s", len, " "); | |
8981 | } | |
8982 | } | |
8983 | ||
8984 | /* IPv6 Next Hop */ | |
8985 | else if (p->family == AF_INET6 || BGP_ATTR_NEXTHOP_AFI_IP6(attr)) { | |
8986 | if (json_paths) { | |
8987 | json_nexthop_global = json_object_new_object(); | |
8988 | json_object_string_addf(json_nexthop_global, "ip", | |
8989 | "%pI6", | |
8990 | &attr->mp_nexthop_global); | |
8991 | ||
8992 | if (path->peer->hostname) | |
8993 | json_object_string_add(json_nexthop_global, | |
8994 | "hostname", | |
8995 | path->peer->hostname); | |
8996 | ||
8997 | json_object_string_add(json_nexthop_global, "afi", | |
8998 | "ipv6"); | |
8999 | json_object_string_add(json_nexthop_global, "scope", | |
9000 | "global"); | |
9001 | ||
9002 | /* We display both LL & GL if both have been | |
9003 | * received */ | |
9004 | if ((attr->mp_nexthop_len | |
9005 | == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) | |
9006 | || (path->peer->conf_if)) { | |
9007 | json_nexthop_ll = json_object_new_object(); | |
9008 | json_object_string_addf( | |
9009 | json_nexthop_ll, "ip", "%pI6", | |
9010 | &attr->mp_nexthop_local); | |
9011 | ||
9012 | if (path->peer->hostname) | |
9013 | json_object_string_add( | |
9014 | json_nexthop_ll, "hostname", | |
9015 | path->peer->hostname); | |
9016 | ||
9017 | json_object_string_add(json_nexthop_ll, "afi", | |
9018 | "ipv6"); | |
9019 | json_object_string_add(json_nexthop_ll, "scope", | |
9020 | "link-local"); | |
9021 | ||
9022 | if ((IPV6_ADDR_CMP(&attr->mp_nexthop_global, | |
9023 | &attr->mp_nexthop_local) | |
9024 | != 0) | |
9025 | && !attr->mp_nexthop_prefer_global) | |
9026 | json_object_boolean_true_add( | |
9027 | json_nexthop_ll, "used"); | |
9028 | else | |
9029 | json_object_boolean_true_add( | |
9030 | json_nexthop_global, "used"); | |
9031 | } else | |
9032 | json_object_boolean_true_add( | |
9033 | json_nexthop_global, "used"); | |
9034 | } else { | |
9035 | /* Display LL if LL/Global both in table unless | |
9036 | * prefer-global is set */ | |
9037 | if (((attr->mp_nexthop_len | |
9038 | == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) | |
9039 | && !attr->mp_nexthop_prefer_global) | |
9040 | || (path->peer->conf_if)) { | |
9041 | if (path->peer->conf_if) { | |
9042 | len = vty_out(vty, "%s", | |
9043 | path->peer->conf_if); | |
9044 | /* len of IPv6 addr + max len of def | |
9045 | * ifname */ | |
9046 | len = wide ? (41 - len) : (16 - len); | |
9047 | ||
9048 | if (len < 1) | |
9049 | vty_out(vty, "\n%*s", 36, " "); | |
9050 | else | |
9051 | vty_out(vty, "%*s", len, " "); | |
9052 | } else { | |
9053 | if (nexthop_hostname) | |
9054 | len = vty_out( | |
9055 | vty, "%pI6(%s)%s", | |
9056 | &attr->mp_nexthop_local, | |
9057 | nexthop_hostname, | |
9058 | vrf_id_str); | |
9059 | else | |
9060 | len = vty_out( | |
9061 | vty, "%pI6%s", | |
9062 | &attr->mp_nexthop_local, | |
9063 | vrf_id_str); | |
9064 | ||
9065 | len = wide ? (41 - len) : (16 - len); | |
9066 | ||
9067 | if (len < 1) | |
9068 | vty_out(vty, "\n%*s", 36, " "); | |
9069 | else | |
9070 | vty_out(vty, "%*s", len, " "); | |
9071 | } | |
9072 | } else { | |
9073 | if (nexthop_hostname) | |
9074 | len = vty_out(vty, "%pI6(%s)%s", | |
9075 | &attr->mp_nexthop_global, | |
9076 | nexthop_hostname, | |
9077 | vrf_id_str); | |
9078 | else | |
9079 | len = vty_out(vty, "%pI6%s", | |
9080 | &attr->mp_nexthop_global, | |
9081 | vrf_id_str); | |
9082 | ||
9083 | len = wide ? (41 - len) : (16 - len); | |
9084 | ||
9085 | if (len < 1) | |
9086 | vty_out(vty, "\n%*s", 36, " "); | |
9087 | else | |
9088 | vty_out(vty, "%*s", len, " "); | |
9089 | } | |
9090 | } | |
9091 | } | |
9092 | ||
9093 | /* MED/Metric */ | |
9094 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
9095 | if (json_paths) | |
9096 | json_object_int_add(json_path, "metric", attr->med); | |
9097 | else if (wide) | |
9098 | vty_out(vty, "%7u", attr->med); | |
9099 | else | |
9100 | vty_out(vty, "%10u", attr->med); | |
9101 | else if (!json_paths) { | |
9102 | if (wide) | |
9103 | vty_out(vty, "%*s", 7, " "); | |
9104 | else | |
9105 | vty_out(vty, "%*s", 10, " "); | |
9106 | } | |
9107 | ||
9108 | /* Local Pref */ | |
9109 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) | |
9110 | if (json_paths) | |
9111 | json_object_int_add(json_path, "locPrf", | |
9112 | attr->local_pref); | |
9113 | else | |
9114 | vty_out(vty, "%7u", attr->local_pref); | |
9115 | else if (!json_paths) | |
9116 | vty_out(vty, " "); | |
9117 | ||
9118 | if (json_paths) | |
9119 | json_object_int_add(json_path, "weight", attr->weight); | |
9120 | else | |
9121 | vty_out(vty, "%7u ", attr->weight); | |
9122 | ||
9123 | if (json_paths) { | |
9124 | char buf[BUFSIZ]; | |
9125 | json_object_string_add( | |
9126 | json_path, "peerId", | |
9127 | sockunion2str(&path->peer->su, buf, SU_ADDRSTRLEN)); | |
9128 | } | |
9129 | ||
9130 | /* Print aspath */ | |
9131 | if (attr->aspath) { | |
9132 | if (json_paths) | |
9133 | json_object_string_add(json_path, "path", | |
9134 | attr->aspath->str); | |
9135 | else | |
9136 | aspath_print_vty(vty, "%s", attr->aspath, " "); | |
9137 | } | |
9138 | ||
9139 | /* Print origin */ | |
9140 | if (json_paths) | |
9141 | json_object_string_add(json_path, "origin", | |
9142 | bgp_origin_long_str[attr->origin]); | |
9143 | else | |
9144 | vty_out(vty, "%s", bgp_origin_str[attr->origin]); | |
9145 | ||
9146 | if (json_paths) { | |
9147 | if (bgp_evpn_is_esi_valid(&attr->esi)) { | |
9148 | json_object_string_add(json_path, "esi", | |
9149 | esi_to_str(&attr->esi, | |
9150 | esi_buf, sizeof(esi_buf))); | |
9151 | } | |
9152 | if (safi == SAFI_EVPN && | |
9153 | attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)) { | |
9154 | json_ext_community = json_object_new_object(); | |
9155 | json_object_string_add( | |
9156 | json_ext_community, "string", | |
9157 | bgp_attr_get_ecommunity(attr)->str); | |
9158 | json_object_object_add(json_path, | |
9159 | "extendedCommunity", | |
9160 | json_ext_community); | |
9161 | } | |
9162 | ||
9163 | if (nexthop_self) | |
9164 | json_object_boolean_true_add(json_path, | |
9165 | "announceNexthopSelf"); | |
9166 | if (nexthop_othervrf) { | |
9167 | json_object_string_add(json_path, "nhVrfName", | |
9168 | nexthop_vrfname); | |
9169 | ||
9170 | json_object_int_add(json_path, "nhVrfId", | |
9171 | ((nexthop_vrfid == VRF_UNKNOWN) | |
9172 | ? -1 | |
9173 | : (int)nexthop_vrfid)); | |
9174 | } | |
9175 | } | |
9176 | ||
9177 | if (json_paths) { | |
9178 | if (json_nexthop_global || json_nexthop_ll) { | |
9179 | json_nexthops = json_object_new_array(); | |
9180 | ||
9181 | if (json_nexthop_global) | |
9182 | json_object_array_add(json_nexthops, | |
9183 | json_nexthop_global); | |
9184 | ||
9185 | if (json_nexthop_ll) | |
9186 | json_object_array_add(json_nexthops, | |
9187 | json_nexthop_ll); | |
9188 | ||
9189 | json_object_object_add(json_path, "nexthops", | |
9190 | json_nexthops); | |
9191 | } | |
9192 | ||
9193 | json_object_array_add(json_paths, json_path); | |
9194 | } else { | |
9195 | vty_out(vty, "\n"); | |
9196 | ||
9197 | if (safi == SAFI_EVPN) { | |
9198 | if (bgp_evpn_is_esi_valid(&attr->esi)) { | |
9199 | /* XXX - add these params to the json out */ | |
9200 | vty_out(vty, "%*s", 20, " "); | |
9201 | vty_out(vty, "ESI:%s", | |
9202 | esi_to_str(&attr->esi, esi_buf, | |
9203 | sizeof(esi_buf))); | |
9204 | ||
9205 | vty_out(vty, "\n"); | |
9206 | } | |
9207 | if (attr->flag & | |
9208 | ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)) { | |
9209 | vty_out(vty, "%*s", 20, " "); | |
9210 | vty_out(vty, "%s\n", | |
9211 | bgp_attr_get_ecommunity(attr)->str); | |
9212 | } | |
9213 | } | |
9214 | ||
9215 | #ifdef ENABLE_BGP_VNC | |
9216 | /* prints an additional line, indented, with VNC info, if | |
9217 | * present */ | |
9218 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP)) | |
9219 | rfapi_vty_out_vncinfo(vty, p, path, safi); | |
9220 | #endif | |
9221 | } | |
9222 | } | |
9223 | ||
9224 | /* called from terminal list command */ | |
9225 | void route_vty_out_tmp(struct vty *vty, struct bgp_dest *dest, | |
9226 | const struct prefix *p, struct attr *attr, safi_t safi, | |
9227 | bool use_json, json_object *json_ar, bool wide) | |
9228 | { | |
9229 | json_object *json_status = NULL; | |
9230 | json_object *json_net = NULL; | |
9231 | int len; | |
9232 | char buff[BUFSIZ]; | |
9233 | ||
9234 | /* Route status display. */ | |
9235 | if (use_json) { | |
9236 | json_status = json_object_new_object(); | |
9237 | json_net = json_object_new_object(); | |
9238 | } else { | |
9239 | vty_out(vty, "*"); | |
9240 | vty_out(vty, ">"); | |
9241 | vty_out(vty, " "); | |
9242 | } | |
9243 | ||
9244 | /* print prefix and mask */ | |
9245 | if (use_json) { | |
9246 | if (safi == SAFI_EVPN) | |
9247 | bgp_evpn_route2json((struct prefix_evpn *)p, json_net); | |
9248 | else if (p->family == AF_INET || p->family == AF_INET6) { | |
9249 | json_object_string_add( | |
9250 | json_net, "addrPrefix", | |
9251 | inet_ntop(p->family, &p->u.prefix, buff, | |
9252 | BUFSIZ)); | |
9253 | json_object_int_add(json_net, "prefixLen", | |
9254 | p->prefixlen); | |
9255 | json_object_string_addf(json_net, "network", "%pFX", p); | |
9256 | } | |
9257 | } else | |
9258 | route_vty_out_route(dest, p, vty, NULL, wide); | |
9259 | ||
9260 | /* Print attribute */ | |
9261 | if (attr) { | |
9262 | if (use_json) { | |
9263 | if (p->family == AF_INET | |
9264 | && (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
9265 | || !BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
9266 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP) | |
9267 | json_object_string_addf( | |
9268 | json_net, "nextHop", "%pI4", | |
9269 | &attr->mp_nexthop_global_in); | |
9270 | else | |
9271 | json_object_string_addf( | |
9272 | json_net, "nextHop", "%pI4", | |
9273 | &attr->nexthop); | |
9274 | } else if (p->family == AF_INET6 | |
9275 | || BGP_ATTR_NEXTHOP_AFI_IP6(attr)) { | |
9276 | json_object_string_addf( | |
9277 | json_net, "nextHopGlobal", "%pI6", | |
9278 | &attr->mp_nexthop_global); | |
9279 | } else if (p->family == AF_EVPN | |
9280 | && !BGP_ATTR_NEXTHOP_AFI_IP6(attr)) { | |
9281 | json_object_string_addf( | |
9282 | json_net, "nextHop", "%pI4", | |
9283 | &attr->mp_nexthop_global_in); | |
9284 | } | |
9285 | ||
9286 | if (attr->flag | |
9287 | & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
9288 | json_object_int_add(json_net, "metric", | |
9289 | attr->med); | |
9290 | ||
9291 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) | |
9292 | json_object_int_add(json_net, "locPrf", | |
9293 | attr->local_pref); | |
9294 | ||
9295 | json_object_int_add(json_net, "weight", attr->weight); | |
9296 | ||
9297 | /* Print aspath */ | |
9298 | if (attr->aspath) | |
9299 | json_object_string_add(json_net, "path", | |
9300 | attr->aspath->str); | |
9301 | ||
9302 | /* Print origin */ | |
9303 | json_object_string_add(json_net, "bgpOriginCode", | |
9304 | bgp_origin_str[attr->origin]); | |
9305 | } else { | |
9306 | if (p->family == AF_INET | |
9307 | && (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
9308 | || safi == SAFI_EVPN | |
9309 | || !BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
9310 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
9311 | || safi == SAFI_EVPN) | |
9312 | vty_out(vty, "%-16pI4", | |
9313 | &attr->mp_nexthop_global_in); | |
9314 | else if (wide) | |
9315 | vty_out(vty, "%-41pI4", &attr->nexthop); | |
9316 | else | |
9317 | vty_out(vty, "%-16pI4", &attr->nexthop); | |
9318 | } else if (p->family == AF_INET6 | |
9319 | || BGP_ATTR_NEXTHOP_AFI_IP6(attr)) { | |
9320 | char buf[BUFSIZ]; | |
9321 | ||
9322 | len = vty_out( | |
9323 | vty, "%s", | |
9324 | inet_ntop(AF_INET6, | |
9325 | &attr->mp_nexthop_global, buf, | |
9326 | BUFSIZ)); | |
9327 | len = wide ? (41 - len) : (16 - len); | |
9328 | if (len < 1) | |
9329 | vty_out(vty, "\n%*s", 36, " "); | |
9330 | else | |
9331 | vty_out(vty, "%*s", len, " "); | |
9332 | } | |
9333 | if (attr->flag | |
9334 | & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
9335 | if (wide) | |
9336 | vty_out(vty, "%7u", attr->med); | |
9337 | else | |
9338 | vty_out(vty, "%10u", attr->med); | |
9339 | else if (wide) | |
9340 | vty_out(vty, " "); | |
9341 | else | |
9342 | vty_out(vty, " "); | |
9343 | ||
9344 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) | |
9345 | vty_out(vty, "%7u", attr->local_pref); | |
9346 | else | |
9347 | vty_out(vty, " "); | |
9348 | ||
9349 | vty_out(vty, "%7u ", attr->weight); | |
9350 | ||
9351 | /* Print aspath */ | |
9352 | if (attr->aspath) | |
9353 | aspath_print_vty(vty, "%s", attr->aspath, " "); | |
9354 | ||
9355 | /* Print origin */ | |
9356 | vty_out(vty, "%s", bgp_origin_str[attr->origin]); | |
9357 | } | |
9358 | } | |
9359 | if (use_json) { | |
9360 | json_object_boolean_true_add(json_status, "*"); | |
9361 | json_object_boolean_true_add(json_status, ">"); | |
9362 | json_object_object_add(json_net, "appliedStatusSymbols", | |
9363 | json_status); | |
9364 | ||
9365 | prefix2str(p, buff, PREFIX_STRLEN); | |
9366 | json_object_object_add(json_ar, buff, json_net); | |
9367 | } else | |
9368 | vty_out(vty, "\n"); | |
9369 | } | |
9370 | ||
9371 | void route_vty_out_tag(struct vty *vty, const struct prefix *p, | |
9372 | struct bgp_path_info *path, int display, safi_t safi, | |
9373 | json_object *json) | |
9374 | { | |
9375 | json_object *json_out = NULL; | |
9376 | struct attr *attr; | |
9377 | mpls_label_t label = MPLS_INVALID_LABEL; | |
9378 | ||
9379 | if (!path->extra) | |
9380 | return; | |
9381 | ||
9382 | if (json) | |
9383 | json_out = json_object_new_object(); | |
9384 | ||
9385 | /* short status lead text */ | |
9386 | route_vty_short_status_out(vty, path, p, json_out); | |
9387 | ||
9388 | /* print prefix and mask */ | |
9389 | if (json == NULL) { | |
9390 | if (!display) | |
9391 | route_vty_out_route(path->net, p, vty, NULL, false); | |
9392 | else | |
9393 | vty_out(vty, "%*s", 17, " "); | |
9394 | } | |
9395 | ||
9396 | /* Print attribute */ | |
9397 | attr = path->attr; | |
9398 | if (((p->family == AF_INET) | |
9399 | && ((safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP))) | |
9400 | || (safi == SAFI_EVPN && !BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
9401 | || (!BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
9402 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
9403 | || safi == SAFI_EVPN) { | |
9404 | if (json) | |
9405 | json_object_string_addf( | |
9406 | json_out, "mpNexthopGlobalIn", "%pI4", | |
9407 | &attr->mp_nexthop_global_in); | |
9408 | else | |
9409 | vty_out(vty, "%-16pI4", | |
9410 | &attr->mp_nexthop_global_in); | |
9411 | } else { | |
9412 | if (json) | |
9413 | json_object_string_addf(json_out, "nexthop", | |
9414 | "%pI4", &attr->nexthop); | |
9415 | else | |
9416 | vty_out(vty, "%-16pI4", &attr->nexthop); | |
9417 | } | |
9418 | } else if (((p->family == AF_INET6) | |
9419 | && ((safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP))) | |
9420 | || (safi == SAFI_EVPN && BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
9421 | || (BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
9422 | char buf_a[512]; | |
9423 | ||
9424 | if (attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) { | |
9425 | if (json) | |
9426 | json_object_string_addf( | |
9427 | json_out, "mpNexthopGlobalIn", "%pI6", | |
9428 | &attr->mp_nexthop_global); | |
9429 | else | |
9430 | vty_out(vty, "%s", | |
9431 | inet_ntop(AF_INET6, | |
9432 | &attr->mp_nexthop_global, | |
9433 | buf_a, sizeof(buf_a))); | |
9434 | } else if (attr->mp_nexthop_len | |
9435 | == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) { | |
9436 | snprintfrr(buf_a, sizeof(buf_a), "%pI6(%pI6)", | |
9437 | &attr->mp_nexthop_global, | |
9438 | &attr->mp_nexthop_local); | |
9439 | if (json) | |
9440 | json_object_string_add(json_out, | |
9441 | "mpNexthopGlobalLocal", | |
9442 | buf_a); | |
9443 | else | |
9444 | vty_out(vty, "%s", buf_a); | |
9445 | } | |
9446 | } | |
9447 | ||
9448 | label = decode_label(&path->extra->label[0]); | |
9449 | ||
9450 | if (bgp_is_valid_label(&label)) { | |
9451 | if (json) { | |
9452 | json_object_int_add(json_out, "notag", label); | |
9453 | json_object_array_add(json, json_out); | |
9454 | } else { | |
9455 | vty_out(vty, "notag/%d", label); | |
9456 | vty_out(vty, "\n"); | |
9457 | } | |
9458 | } else if (!json) | |
9459 | vty_out(vty, "\n"); | |
9460 | } | |
9461 | ||
9462 | void route_vty_out_overlay(struct vty *vty, const struct prefix *p, | |
9463 | struct bgp_path_info *path, int display, | |
9464 | json_object *json_paths) | |
9465 | { | |
9466 | struct attr *attr; | |
9467 | char buf[BUFSIZ] = {0}; | |
9468 | json_object *json_path = NULL; | |
9469 | json_object *json_nexthop = NULL; | |
9470 | json_object *json_overlay = NULL; | |
9471 | ||
9472 | if (!path->extra) | |
9473 | return; | |
9474 | ||
9475 | if (json_paths) { | |
9476 | json_path = json_object_new_object(); | |
9477 | json_overlay = json_object_new_object(); | |
9478 | json_nexthop = json_object_new_object(); | |
9479 | } | |
9480 | ||
9481 | /* short status lead text */ | |
9482 | route_vty_short_status_out(vty, path, p, json_path); | |
9483 | ||
9484 | /* print prefix and mask */ | |
9485 | if (!display) | |
9486 | route_vty_out_route(path->net, p, vty, json_path, false); | |
9487 | else | |
9488 | vty_out(vty, "%*s", 17, " "); | |
9489 | ||
9490 | /* Print attribute */ | |
9491 | attr = path->attr; | |
9492 | char buf1[BUFSIZ]; | |
9493 | int af = NEXTHOP_FAMILY(attr->mp_nexthop_len); | |
9494 | ||
9495 | switch (af) { | |
9496 | case AF_INET: | |
9497 | inet_ntop(af, &attr->mp_nexthop_global_in, buf, BUFSIZ); | |
9498 | if (!json_path) { | |
9499 | vty_out(vty, "%-16s", buf); | |
9500 | } else { | |
9501 | json_object_string_add(json_nexthop, "ip", buf); | |
9502 | ||
9503 | json_object_string_add(json_nexthop, "afi", "ipv4"); | |
9504 | ||
9505 | json_object_object_add(json_path, "nexthop", | |
9506 | json_nexthop); | |
9507 | } | |
9508 | break; | |
9509 | case AF_INET6: | |
9510 | inet_ntop(af, &attr->mp_nexthop_global, buf, BUFSIZ); | |
9511 | inet_ntop(af, &attr->mp_nexthop_local, buf1, BUFSIZ); | |
9512 | if (!json_path) { | |
9513 | vty_out(vty, "%s(%s)", buf, buf1); | |
9514 | } else { | |
9515 | json_object_string_add(json_nexthop, "ipv6Global", buf); | |
9516 | ||
9517 | json_object_string_add(json_nexthop, "ipv6LinkLocal", | |
9518 | buf1); | |
9519 | ||
9520 | json_object_string_add(json_nexthop, "afi", "ipv6"); | |
9521 | ||
9522 | json_object_object_add(json_path, "nexthop", | |
9523 | json_nexthop); | |
9524 | } | |
9525 | break; | |
9526 | default: | |
9527 | if (!json_path) { | |
9528 | vty_out(vty, "?"); | |
9529 | } else { | |
9530 | json_object_string_add(json_nexthop, "Error", | |
9531 | "Unsupported address-family"); | |
9532 | json_object_string_add(json_nexthop, "error", | |
9533 | "Unsupported address-family"); | |
9534 | } | |
9535 | } | |
9536 | ||
9537 | const struct bgp_route_evpn *eo = bgp_attr_get_evpn_overlay(attr); | |
9538 | ||
9539 | ipaddr2str(&eo->gw_ip, buf, BUFSIZ); | |
9540 | ||
9541 | if (!json_path) | |
9542 | vty_out(vty, "/%s", buf); | |
9543 | else | |
9544 | json_object_string_add(json_overlay, "gw", buf); | |
9545 | ||
9546 | if (bgp_attr_get_ecommunity(attr)) { | |
9547 | char *mac = NULL; | |
9548 | struct ecommunity_val *routermac = ecommunity_lookup( | |
9549 | bgp_attr_get_ecommunity(attr), ECOMMUNITY_ENCODE_EVPN, | |
9550 | ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC); | |
9551 | ||
9552 | if (routermac) | |
9553 | mac = ecom_mac2str((char *)routermac->val); | |
9554 | if (mac) { | |
9555 | if (!json_path) { | |
9556 | vty_out(vty, "/%s", mac); | |
9557 | } else { | |
9558 | json_object_string_add(json_overlay, "rmac", | |
9559 | mac); | |
9560 | } | |
9561 | XFREE(MTYPE_TMP, mac); | |
9562 | } | |
9563 | } | |
9564 | ||
9565 | if (!json_path) { | |
9566 | vty_out(vty, "\n"); | |
9567 | } else { | |
9568 | json_object_object_add(json_path, "overlay", json_overlay); | |
9569 | ||
9570 | json_object_array_add(json_paths, json_path); | |
9571 | } | |
9572 | } | |
9573 | ||
9574 | /* dampening route */ | |
9575 | static void damp_route_vty_out(struct vty *vty, const struct prefix *p, | |
9576 | struct bgp_path_info *path, int display, | |
9577 | afi_t afi, safi_t safi, bool use_json, | |
9578 | json_object *json_paths) | |
9579 | { | |
9580 | struct attr *attr = path->attr; | |
9581 | int len; | |
9582 | char timebuf[BGP_UPTIME_LEN]; | |
9583 | json_object *json_path = NULL; | |
9584 | ||
9585 | if (use_json) | |
9586 | json_path = json_object_new_object(); | |
9587 | ||
9588 | /* short status lead text */ | |
9589 | route_vty_short_status_out(vty, path, p, json_path); | |
9590 | ||
9591 | /* print prefix and mask */ | |
9592 | if (!use_json) { | |
9593 | if (!display) | |
9594 | route_vty_out_route(path->net, p, vty, NULL, false); | |
9595 | else | |
9596 | vty_out(vty, "%*s", 17, " "); | |
9597 | ||
9598 | len = vty_out(vty, "%s", path->peer->host); | |
9599 | len = 17 - len; | |
9600 | ||
9601 | if (len < 1) | |
9602 | vty_out(vty, "\n%*s", 34, " "); | |
9603 | else | |
9604 | vty_out(vty, "%*s", len, " "); | |
9605 | ||
9606 | vty_out(vty, "%s ", | |
9607 | bgp_damp_reuse_time_vty(vty, path, timebuf, | |
9608 | BGP_UPTIME_LEN, afi, safi, | |
9609 | use_json, NULL)); | |
9610 | ||
9611 | if (attr->aspath) | |
9612 | aspath_print_vty(vty, "%s", attr->aspath, " "); | |
9613 | ||
9614 | vty_out(vty, "%s", bgp_origin_str[attr->origin]); | |
9615 | ||
9616 | vty_out(vty, "\n"); | |
9617 | } else { | |
9618 | bgp_damp_reuse_time_vty(vty, path, timebuf, BGP_UPTIME_LEN, afi, | |
9619 | safi, use_json, json_path); | |
9620 | ||
9621 | if (attr->aspath) | |
9622 | json_object_string_add(json_path, "asPath", | |
9623 | attr->aspath->str); | |
9624 | ||
9625 | json_object_string_add(json_path, "origin", | |
9626 | bgp_origin_str[attr->origin]); | |
9627 | json_object_string_add(json_path, "peerHost", path->peer->host); | |
9628 | ||
9629 | json_object_array_add(json_paths, json_path); | |
9630 | } | |
9631 | } | |
9632 | ||
9633 | /* flap route */ | |
9634 | static void flap_route_vty_out(struct vty *vty, const struct prefix *p, | |
9635 | struct bgp_path_info *path, int display, | |
9636 | afi_t afi, safi_t safi, bool use_json, | |
9637 | json_object *json_paths) | |
9638 | { | |
9639 | struct attr *attr = path->attr; | |
9640 | struct bgp_damp_info *bdi; | |
9641 | char timebuf[BGP_UPTIME_LEN]; | |
9642 | int len; | |
9643 | json_object *json_path = NULL; | |
9644 | ||
9645 | if (!path->extra) | |
9646 | return; | |
9647 | ||
9648 | if (use_json) | |
9649 | json_path = json_object_new_object(); | |
9650 | ||
9651 | bdi = path->extra->damp_info; | |
9652 | ||
9653 | /* short status lead text */ | |
9654 | route_vty_short_status_out(vty, path, p, json_path); | |
9655 | ||
9656 | if (!use_json) { | |
9657 | if (!display) | |
9658 | route_vty_out_route(path->net, p, vty, NULL, false); | |
9659 | else | |
9660 | vty_out(vty, "%*s", 17, " "); | |
9661 | ||
9662 | len = vty_out(vty, "%s", path->peer->host); | |
9663 | len = 16 - len; | |
9664 | if (len < 1) | |
9665 | vty_out(vty, "\n%*s", 33, " "); | |
9666 | else | |
9667 | vty_out(vty, "%*s", len, " "); | |
9668 | ||
9669 | len = vty_out(vty, "%d", bdi->flap); | |
9670 | len = 5 - len; | |
9671 | if (len < 1) | |
9672 | vty_out(vty, " "); | |
9673 | else | |
9674 | vty_out(vty, "%*s", len, " "); | |
9675 | ||
9676 | vty_out(vty, "%s ", peer_uptime(bdi->start_time, timebuf, | |
9677 | BGP_UPTIME_LEN, 0, NULL)); | |
9678 | ||
9679 | if (CHECK_FLAG(path->flags, BGP_PATH_DAMPED) | |
9680 | && !CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
9681 | vty_out(vty, "%s ", | |
9682 | bgp_damp_reuse_time_vty(vty, path, timebuf, | |
9683 | BGP_UPTIME_LEN, afi, | |
9684 | safi, use_json, NULL)); | |
9685 | else | |
9686 | vty_out(vty, "%*s ", 8, " "); | |
9687 | ||
9688 | if (attr->aspath) | |
9689 | aspath_print_vty(vty, "%s", attr->aspath, " "); | |
9690 | ||
9691 | vty_out(vty, "%s", bgp_origin_str[attr->origin]); | |
9692 | ||
9693 | vty_out(vty, "\n"); | |
9694 | } else { | |
9695 | json_object_string_add(json_path, "peerHost", path->peer->host); | |
9696 | json_object_int_add(json_path, "bdiFlap", bdi->flap); | |
9697 | ||
9698 | peer_uptime(bdi->start_time, timebuf, BGP_UPTIME_LEN, use_json, | |
9699 | json_path); | |
9700 | ||
9701 | if (CHECK_FLAG(path->flags, BGP_PATH_DAMPED) | |
9702 | && !CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) | |
9703 | bgp_damp_reuse_time_vty(vty, path, timebuf, | |
9704 | BGP_UPTIME_LEN, afi, safi, | |
9705 | use_json, json_path); | |
9706 | ||
9707 | if (attr->aspath) | |
9708 | json_object_string_add(json_path, "asPath", | |
9709 | attr->aspath->str); | |
9710 | ||
9711 | json_object_string_add(json_path, "origin", | |
9712 | bgp_origin_str[attr->origin]); | |
9713 | ||
9714 | json_object_array_add(json_paths, json_path); | |
9715 | } | |
9716 | } | |
9717 | ||
9718 | static void route_vty_out_advertised_to(struct vty *vty, struct peer *peer, | |
9719 | int *first, const char *header, | |
9720 | json_object *json_adv_to) | |
9721 | { | |
9722 | char buf1[INET6_ADDRSTRLEN]; | |
9723 | json_object *json_peer = NULL; | |
9724 | ||
9725 | if (json_adv_to) { | |
9726 | /* 'advertised-to' is a dictionary of peers we have advertised | |
9727 | * this | |
9728 | * prefix too. The key is the peer's IP or swpX, the value is | |
9729 | * the | |
9730 | * hostname if we know it and "" if not. | |
9731 | */ | |
9732 | json_peer = json_object_new_object(); | |
9733 | ||
9734 | if (peer->hostname) | |
9735 | json_object_string_add(json_peer, "hostname", | |
9736 | peer->hostname); | |
9737 | ||
9738 | if (peer->conf_if) | |
9739 | json_object_object_add(json_adv_to, peer->conf_if, | |
9740 | json_peer); | |
9741 | else | |
9742 | json_object_object_add( | |
9743 | json_adv_to, | |
9744 | sockunion2str(&peer->su, buf1, SU_ADDRSTRLEN), | |
9745 | json_peer); | |
9746 | } else { | |
9747 | if (*first) { | |
9748 | vty_out(vty, "%s", header); | |
9749 | *first = 0; | |
9750 | } | |
9751 | ||
9752 | if (peer->hostname | |
9753 | && CHECK_FLAG(peer->bgp->flags, BGP_FLAG_SHOW_HOSTNAME)) { | |
9754 | if (peer->conf_if) | |
9755 | vty_out(vty, " %s(%s)", peer->hostname, | |
9756 | peer->conf_if); | |
9757 | else | |
9758 | vty_out(vty, " %s(%s)", peer->hostname, | |
9759 | sockunion2str(&peer->su, buf1, | |
9760 | SU_ADDRSTRLEN)); | |
9761 | } else { | |
9762 | if (peer->conf_if) | |
9763 | vty_out(vty, " %s", peer->conf_if); | |
9764 | else | |
9765 | vty_out(vty, " %s", | |
9766 | sockunion2str(&peer->su, buf1, | |
9767 | SU_ADDRSTRLEN)); | |
9768 | } | |
9769 | } | |
9770 | } | |
9771 | ||
9772 | static void route_vty_out_tx_ids(struct vty *vty, | |
9773 | struct bgp_addpath_info_data *d) | |
9774 | { | |
9775 | int i; | |
9776 | ||
9777 | for (i = 0; i < BGP_ADDPATH_MAX; i++) { | |
9778 | vty_out(vty, "TX-%s %u%s", bgp_addpath_names(i)->human_name, | |
9779 | d->addpath_tx_id[i], | |
9780 | i < BGP_ADDPATH_MAX - 1 ? " " : "\n"); | |
9781 | } | |
9782 | } | |
9783 | ||
9784 | static void route_vty_out_detail_es_info(struct vty *vty, | |
9785 | struct bgp_path_info *pi, | |
9786 | struct attr *attr, | |
9787 | json_object *json_path) | |
9788 | { | |
9789 | char esi_buf[ESI_STR_LEN]; | |
9790 | bool es_local = !!CHECK_FLAG(attr->es_flags, ATTR_ES_IS_LOCAL); | |
9791 | bool peer_router = !!CHECK_FLAG(attr->es_flags, | |
9792 | ATTR_ES_PEER_ROUTER); | |
9793 | bool peer_active = !!CHECK_FLAG(attr->es_flags, | |
9794 | ATTR_ES_PEER_ACTIVE); | |
9795 | bool peer_proxy = !!CHECK_FLAG(attr->es_flags, | |
9796 | ATTR_ES_PEER_PROXY); | |
9797 | esi_to_str(&attr->esi, esi_buf, sizeof(esi_buf)); | |
9798 | if (json_path) { | |
9799 | json_object *json_es_info = NULL; | |
9800 | ||
9801 | json_object_string_add( | |
9802 | json_path, "esi", | |
9803 | esi_buf); | |
9804 | if (es_local || bgp_evpn_attr_is_sync(attr)) { | |
9805 | json_es_info = json_object_new_object(); | |
9806 | if (es_local) | |
9807 | json_object_boolean_true_add( | |
9808 | json_es_info, "localEs"); | |
9809 | if (peer_active) | |
9810 | json_object_boolean_true_add( | |
9811 | json_es_info, "peerActive"); | |
9812 | if (peer_proxy) | |
9813 | json_object_boolean_true_add( | |
9814 | json_es_info, "peerProxy"); | |
9815 | if (peer_router) | |
9816 | json_object_boolean_true_add( | |
9817 | json_es_info, "peerRouter"); | |
9818 | if (attr->mm_sync_seqnum) | |
9819 | json_object_int_add( | |
9820 | json_es_info, "peerSeq", | |
9821 | attr->mm_sync_seqnum); | |
9822 | json_object_object_add( | |
9823 | json_path, "es_info", | |
9824 | json_es_info); | |
9825 | } | |
9826 | } else { | |
9827 | if (bgp_evpn_attr_is_sync(attr)) | |
9828 | vty_out(vty, | |
9829 | " ESI %s %s peer-info: (%s%s%sMM: %d)\n", | |
9830 | esi_buf, | |
9831 | es_local ? "local-es":"", | |
9832 | peer_proxy ? "proxy " : "", | |
9833 | peer_active ? "active ":"", | |
9834 | peer_router ? "router ":"", | |
9835 | attr->mm_sync_seqnum); | |
9836 | else | |
9837 | vty_out(vty, " ESI %s %s\n", | |
9838 | esi_buf, | |
9839 | es_local ? "local-es":""); | |
9840 | } | |
9841 | } | |
9842 | ||
9843 | void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn, | |
9844 | struct bgp_path_info *path, afi_t afi, safi_t safi, | |
9845 | enum rpki_states rpki_curr_state, | |
9846 | json_object *json_paths) | |
9847 | { | |
9848 | char buf[INET6_ADDRSTRLEN]; | |
9849 | char buf1[BUFSIZ]; | |
9850 | struct attr *attr = path->attr; | |
9851 | int sockunion_vty_out(struct vty *, union sockunion *); | |
9852 | time_t tbuf; | |
9853 | json_object *json_bestpath = NULL; | |
9854 | json_object *json_cluster_list = NULL; | |
9855 | json_object *json_cluster_list_list = NULL; | |
9856 | json_object *json_ext_community = NULL; | |
9857 | json_object *json_last_update = NULL; | |
9858 | json_object *json_pmsi = NULL; | |
9859 | json_object *json_nexthop_global = NULL; | |
9860 | json_object *json_nexthop_ll = NULL; | |
9861 | json_object *json_nexthops = NULL; | |
9862 | json_object *json_path = NULL; | |
9863 | json_object *json_peer = NULL; | |
9864 | json_object *json_string = NULL; | |
9865 | json_object *json_adv_to = NULL; | |
9866 | int first = 0; | |
9867 | struct listnode *node, *nnode; | |
9868 | struct peer *peer; | |
9869 | bool addpath_capable; | |
9870 | int has_adj; | |
9871 | unsigned int first_as; | |
9872 | bool nexthop_self = | |
9873 | CHECK_FLAG(path->flags, BGP_PATH_ANNC_NH_SELF) ? true : false; | |
9874 | int i; | |
9875 | char *nexthop_hostname = | |
9876 | bgp_nexthop_hostname(path->peer, path->nexthop); | |
9877 | ||
9878 | if (json_paths) { | |
9879 | json_path = json_object_new_object(); | |
9880 | json_peer = json_object_new_object(); | |
9881 | json_nexthop_global = json_object_new_object(); | |
9882 | } | |
9883 | ||
9884 | if (safi == SAFI_EVPN) { | |
9885 | if (!json_paths) | |
9886 | vty_out(vty, " Route %pRN", bn); | |
9887 | } | |
9888 | ||
9889 | if (path->extra) { | |
9890 | char tag_buf[30]; | |
9891 | ||
9892 | tag_buf[0] = '\0'; | |
9893 | if (path->extra && path->extra->num_labels) { | |
9894 | bgp_evpn_label2str(path->extra->label, | |
9895 | path->extra->num_labels, tag_buf, | |
9896 | sizeof(tag_buf)); | |
9897 | } | |
9898 | if (safi == SAFI_EVPN) { | |
9899 | if (!json_paths) { | |
9900 | if (tag_buf[0] != '\0') | |
9901 | vty_out(vty, " VNI %s", tag_buf); | |
9902 | } else { | |
9903 | if (tag_buf[0]) { | |
9904 | json_object_string_add(json_path, "VNI", | |
9905 | tag_buf); | |
9906 | json_object_string_add(json_path, "vni", | |
9907 | tag_buf); | |
9908 | } | |
9909 | } | |
9910 | } | |
9911 | ||
9912 | if (path->extra && path->extra->parent && !json_paths) { | |
9913 | struct bgp_path_info *parent_ri; | |
9914 | struct bgp_dest *dest, *pdest; | |
9915 | ||
9916 | parent_ri = (struct bgp_path_info *)path->extra->parent; | |
9917 | dest = parent_ri->net; | |
9918 | if (dest && dest->pdest) { | |
9919 | pdest = dest->pdest; | |
9920 | prefix_rd2str( | |
9921 | (struct prefix_rd *)bgp_dest_get_prefix( | |
9922 | pdest), | |
9923 | buf1, sizeof(buf1)); | |
9924 | if (is_pi_family_evpn(parent_ri)) { | |
9925 | vty_out(vty, | |
9926 | " Imported from %s:%pFX, VNI %s", | |
9927 | buf1, | |
9928 | (struct prefix_evpn *) | |
9929 | bgp_dest_get_prefix( | |
9930 | dest), | |
9931 | tag_buf); | |
9932 | if (attr->es_flags & ATTR_ES_L3_NHG) | |
9933 | vty_out(vty, ", L3NHG %s", | |
9934 | (attr->es_flags | |
9935 | & ATTR_ES_L3_NHG_ACTIVE) | |
9936 | ? "active" | |
9937 | : "inactive"); | |
9938 | vty_out(vty, "\n"); | |
9939 | ||
9940 | } else | |
9941 | vty_out(vty, | |
9942 | " Imported from %s:%pFX\n", | |
9943 | buf1, | |
9944 | (struct prefix_evpn *) | |
9945 | bgp_dest_get_prefix( | |
9946 | dest)); | |
9947 | } | |
9948 | } | |
9949 | } | |
9950 | ||
9951 | if (safi == SAFI_EVPN | |
9952 | && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
9953 | char gwip_buf[INET6_ADDRSTRLEN]; | |
9954 | ||
9955 | ipaddr2str(&attr->evpn_overlay.gw_ip, gwip_buf, | |
9956 | sizeof(gwip_buf)); | |
9957 | ||
9958 | if (json_paths) | |
9959 | json_object_string_add(json_path, "gatewayIP", | |
9960 | gwip_buf); | |
9961 | else | |
9962 | vty_out(vty, " Gateway IP %s", gwip_buf); | |
9963 | } | |
9964 | ||
9965 | if (safi == SAFI_EVPN) | |
9966 | vty_out(vty, "\n"); | |
9967 | ||
9968 | /* Line1 display AS-path, Aggregator */ | |
9969 | if (attr->aspath) { | |
9970 | if (json_paths) { | |
9971 | if (!attr->aspath->json) | |
9972 | aspath_str_update(attr->aspath, true); | |
9973 | json_object_lock(attr->aspath->json); | |
9974 | json_object_object_add(json_path, "aspath", | |
9975 | attr->aspath->json); | |
9976 | } else { | |
9977 | if (attr->aspath->segments) | |
9978 | aspath_print_vty(vty, " %s", attr->aspath, ""); | |
9979 | else | |
9980 | vty_out(vty, " Local"); | |
9981 | } | |
9982 | } | |
9983 | ||
9984 | if (CHECK_FLAG(path->flags, BGP_PATH_REMOVED)) { | |
9985 | if (json_paths) | |
9986 | json_object_boolean_true_add(json_path, "removed"); | |
9987 | else | |
9988 | vty_out(vty, ", (removed)"); | |
9989 | } | |
9990 | ||
9991 | if (CHECK_FLAG(path->flags, BGP_PATH_STALE)) { | |
9992 | if (json_paths) | |
9993 | json_object_boolean_true_add(json_path, "stale"); | |
9994 | else | |
9995 | vty_out(vty, ", (stale)"); | |
9996 | } | |
9997 | ||
9998 | if (CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_AGGREGATOR))) { | |
9999 | if (json_paths) { | |
10000 | json_object_int_add(json_path, "aggregatorAs", | |
10001 | attr->aggregator_as); | |
10002 | json_object_string_addf(json_path, "aggregatorId", | |
10003 | "%pI4", &attr->aggregator_addr); | |
10004 | } else { | |
10005 | vty_out(vty, ", (aggregated by %u %pI4)", | |
10006 | attr->aggregator_as, &attr->aggregator_addr); | |
10007 | } | |
10008 | } | |
10009 | ||
10010 | if (CHECK_FLAG(path->peer->af_flags[afi][safi], | |
10011 | PEER_FLAG_REFLECTOR_CLIENT)) { | |
10012 | if (json_paths) | |
10013 | json_object_boolean_true_add(json_path, | |
10014 | "rxedFromRrClient"); | |
10015 | else | |
10016 | vty_out(vty, ", (Received from a RR-client)"); | |
10017 | } | |
10018 | ||
10019 | if (CHECK_FLAG(path->peer->af_flags[afi][safi], | |
10020 | PEER_FLAG_RSERVER_CLIENT)) { | |
10021 | if (json_paths) | |
10022 | json_object_boolean_true_add(json_path, | |
10023 | "rxedFromRsClient"); | |
10024 | else | |
10025 | vty_out(vty, ", (Received from a RS-client)"); | |
10026 | } | |
10027 | ||
10028 | if (CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) { | |
10029 | if (json_paths) | |
10030 | json_object_boolean_true_add(json_path, | |
10031 | "dampeningHistoryEntry"); | |
10032 | else | |
10033 | vty_out(vty, ", (history entry)"); | |
10034 | } else if (CHECK_FLAG(path->flags, BGP_PATH_DAMPED)) { | |
10035 | if (json_paths) | |
10036 | json_object_boolean_true_add(json_path, | |
10037 | "dampeningSuppressed"); | |
10038 | else | |
10039 | vty_out(vty, ", (suppressed due to dampening)"); | |
10040 | } | |
10041 | ||
10042 | if (!json_paths) | |
10043 | vty_out(vty, "\n"); | |
10044 | ||
10045 | /* Line2 display Next-hop, Neighbor, Router-id */ | |
10046 | /* Display the nexthop */ | |
10047 | const struct prefix *bn_p = bgp_dest_get_prefix(bn); | |
10048 | ||
10049 | if ((bn_p->family == AF_INET || bn_p->family == AF_ETHERNET | |
10050 | || bn_p->family == AF_EVPN) | |
10051 | && (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP || safi == SAFI_EVPN | |
10052 | || !BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
10053 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
10054 | || safi == SAFI_EVPN) { | |
10055 | if (json_paths) { | |
10056 | json_object_string_addf( | |
10057 | json_nexthop_global, "ip", "%pI4", | |
10058 | &attr->mp_nexthop_global_in); | |
10059 | ||
10060 | if (path->peer->hostname) | |
10061 | json_object_string_add( | |
10062 | json_nexthop_global, "hostname", | |
10063 | path->peer->hostname); | |
10064 | } else { | |
10065 | if (nexthop_hostname) | |
10066 | vty_out(vty, " %pI4(%s)", | |
10067 | &attr->mp_nexthop_global_in, | |
10068 | nexthop_hostname); | |
10069 | else | |
10070 | vty_out(vty, " %pI4", | |
10071 | &attr->mp_nexthop_global_in); | |
10072 | } | |
10073 | } else { | |
10074 | if (json_paths) { | |
10075 | json_object_string_addf(json_nexthop_global, | |
10076 | "ip", "%pI4", | |
10077 | &attr->nexthop); | |
10078 | ||
10079 | if (path->peer->hostname) | |
10080 | json_object_string_add( | |
10081 | json_nexthop_global, "hostname", | |
10082 | path->peer->hostname); | |
10083 | } else { | |
10084 | if (nexthop_hostname) | |
10085 | vty_out(vty, " %pI4(%s)", | |
10086 | &attr->nexthop, | |
10087 | nexthop_hostname); | |
10088 | else | |
10089 | vty_out(vty, " %pI4", | |
10090 | &attr->nexthop); | |
10091 | } | |
10092 | } | |
10093 | ||
10094 | if (json_paths) | |
10095 | json_object_string_add(json_nexthop_global, "afi", | |
10096 | "ipv4"); | |
10097 | } else { | |
10098 | if (json_paths) { | |
10099 | json_object_string_addf(json_nexthop_global, "ip", | |
10100 | "%pI6", | |
10101 | &attr->mp_nexthop_global); | |
10102 | ||
10103 | if (path->peer->hostname) | |
10104 | json_object_string_add(json_nexthop_global, | |
10105 | "hostname", | |
10106 | path->peer->hostname); | |
10107 | ||
10108 | json_object_string_add(json_nexthop_global, "afi", | |
10109 | "ipv6"); | |
10110 | json_object_string_add(json_nexthop_global, "scope", | |
10111 | "global"); | |
10112 | } else { | |
10113 | if (nexthop_hostname) | |
10114 | vty_out(vty, " %pI6(%s)", | |
10115 | &attr->mp_nexthop_global, | |
10116 | nexthop_hostname); | |
10117 | else | |
10118 | vty_out(vty, " %pI6", | |
10119 | &attr->mp_nexthop_global); | |
10120 | } | |
10121 | } | |
10122 | ||
10123 | /* Display the IGP cost or 'inaccessible' */ | |
10124 | if (!CHECK_FLAG(path->flags, BGP_PATH_VALID)) { | |
10125 | if (json_paths) | |
10126 | json_object_boolean_false_add(json_nexthop_global, | |
10127 | "accessible"); | |
10128 | else | |
10129 | vty_out(vty, " (inaccessible)"); | |
10130 | } else { | |
10131 | if (path->extra && path->extra->igpmetric) { | |
10132 | if (json_paths) | |
10133 | json_object_int_add(json_nexthop_global, | |
10134 | "metric", | |
10135 | path->extra->igpmetric); | |
10136 | else | |
10137 | vty_out(vty, " (metric %u)", | |
10138 | path->extra->igpmetric); | |
10139 | } | |
10140 | ||
10141 | /* IGP cost is 0, display this only for json */ | |
10142 | else { | |
10143 | if (json_paths) | |
10144 | json_object_int_add(json_nexthop_global, | |
10145 | "metric", 0); | |
10146 | } | |
10147 | ||
10148 | if (json_paths) | |
10149 | json_object_boolean_true_add(json_nexthop_global, | |
10150 | "accessible"); | |
10151 | } | |
10152 | ||
10153 | /* Display peer "from" output */ | |
10154 | /* This path was originated locally */ | |
10155 | if (path->peer == bgp->peer_self) { | |
10156 | ||
10157 | if (safi == SAFI_EVPN | |
10158 | || (bn_p->family == AF_INET | |
10159 | && !BGP_ATTR_NEXTHOP_AFI_IP6(attr))) { | |
10160 | if (json_paths) | |
10161 | json_object_string_add(json_peer, "peerId", | |
10162 | "0.0.0.0"); | |
10163 | else | |
10164 | vty_out(vty, " from 0.0.0.0 "); | |
10165 | } else { | |
10166 | if (json_paths) | |
10167 | json_object_string_add(json_peer, "peerId", | |
10168 | "::"); | |
10169 | else | |
10170 | vty_out(vty, " from :: "); | |
10171 | } | |
10172 | ||
10173 | if (json_paths) | |
10174 | json_object_string_addf(json_peer, "routerId", "%pI4", | |
10175 | &bgp->router_id); | |
10176 | else | |
10177 | vty_out(vty, "(%pI4)", &bgp->router_id); | |
10178 | } | |
10179 | ||
10180 | /* We RXed this path from one of our peers */ | |
10181 | else { | |
10182 | ||
10183 | if (json_paths) { | |
10184 | json_object_string_add(json_peer, "peerId", | |
10185 | sockunion2str(&path->peer->su, | |
10186 | buf, | |
10187 | SU_ADDRSTRLEN)); | |
10188 | json_object_string_addf(json_peer, "routerId", "%pI4", | |
10189 | &path->peer->remote_id); | |
10190 | ||
10191 | if (path->peer->hostname) | |
10192 | json_object_string_add(json_peer, "hostname", | |
10193 | path->peer->hostname); | |
10194 | ||
10195 | if (path->peer->domainname) | |
10196 | json_object_string_add(json_peer, "domainname", | |
10197 | path->peer->domainname); | |
10198 | ||
10199 | if (path->peer->conf_if) | |
10200 | json_object_string_add(json_peer, "interface", | |
10201 | path->peer->conf_if); | |
10202 | } else { | |
10203 | if (path->peer->conf_if) { | |
10204 | if (path->peer->hostname | |
10205 | && CHECK_FLAG(path->peer->bgp->flags, | |
10206 | BGP_FLAG_SHOW_HOSTNAME)) | |
10207 | vty_out(vty, " from %s(%s)", | |
10208 | path->peer->hostname, | |
10209 | path->peer->conf_if); | |
10210 | else | |
10211 | vty_out(vty, " from %s", | |
10212 | path->peer->conf_if); | |
10213 | } else { | |
10214 | if (path->peer->hostname | |
10215 | && CHECK_FLAG(path->peer->bgp->flags, | |
10216 | BGP_FLAG_SHOW_HOSTNAME)) | |
10217 | vty_out(vty, " from %s(%s)", | |
10218 | path->peer->hostname, | |
10219 | path->peer->host); | |
10220 | else | |
10221 | vty_out(vty, " from %s", | |
10222 | sockunion2str(&path->peer->su, | |
10223 | buf, | |
10224 | SU_ADDRSTRLEN)); | |
10225 | } | |
10226 | ||
10227 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)) | |
10228 | vty_out(vty, " (%pI4)", &attr->originator_id); | |
10229 | else | |
10230 | vty_out(vty, " (%s)", | |
10231 | inet_ntop(AF_INET, | |
10232 | &path->peer->remote_id, buf1, | |
10233 | sizeof(buf1))); | |
10234 | } | |
10235 | } | |
10236 | ||
10237 | /* | |
10238 | * Note when vrfid of nexthop is different from that of prefix | |
10239 | */ | |
10240 | if (path->extra && path->extra->bgp_orig) { | |
10241 | vrf_id_t nexthop_vrfid = path->extra->bgp_orig->vrf_id; | |
10242 | ||
10243 | if (json_paths) { | |
10244 | const char *vn; | |
10245 | ||
10246 | if (path->extra->bgp_orig->inst_type | |
10247 | == BGP_INSTANCE_TYPE_DEFAULT) | |
10248 | vn = VRF_DEFAULT_NAME; | |
10249 | else | |
10250 | vn = path->extra->bgp_orig->name; | |
10251 | ||
10252 | json_object_string_add(json_path, "nhVrfName", vn); | |
10253 | ||
10254 | if (nexthop_vrfid == VRF_UNKNOWN) { | |
10255 | json_object_int_add(json_path, "nhVrfId", -1); | |
10256 | } else { | |
10257 | json_object_int_add(json_path, "nhVrfId", | |
10258 | (int)nexthop_vrfid); | |
10259 | } | |
10260 | } else { | |
10261 | if (nexthop_vrfid == VRF_UNKNOWN) | |
10262 | vty_out(vty, " vrf ?"); | |
10263 | else { | |
10264 | struct vrf *vrf; | |
10265 | ||
10266 | vrf = vrf_lookup_by_id(nexthop_vrfid); | |
10267 | vty_out(vty, " vrf %s(%u)", | |
10268 | VRF_LOGNAME(vrf), nexthop_vrfid); | |
10269 | } | |
10270 | } | |
10271 | } | |
10272 | ||
10273 | if (nexthop_self) { | |
10274 | if (json_paths) { | |
10275 | json_object_boolean_true_add(json_path, | |
10276 | "announceNexthopSelf"); | |
10277 | } else { | |
10278 | vty_out(vty, " announce-nh-self"); | |
10279 | } | |
10280 | } | |
10281 | ||
10282 | if (!json_paths) | |
10283 | vty_out(vty, "\n"); | |
10284 | ||
10285 | /* display the link-local nexthop */ | |
10286 | if (attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) { | |
10287 | if (json_paths) { | |
10288 | json_nexthop_ll = json_object_new_object(); | |
10289 | json_object_string_addf(json_nexthop_ll, "ip", "%pI6", | |
10290 | &attr->mp_nexthop_local); | |
10291 | ||
10292 | if (path->peer->hostname) | |
10293 | json_object_string_add(json_nexthop_ll, | |
10294 | "hostname", | |
10295 | path->peer->hostname); | |
10296 | ||
10297 | json_object_string_add(json_nexthop_ll, "afi", "ipv6"); | |
10298 | json_object_string_add(json_nexthop_ll, "scope", | |
10299 | "link-local"); | |
10300 | ||
10301 | json_object_boolean_true_add(json_nexthop_ll, | |
10302 | "accessible"); | |
10303 | ||
10304 | if (!attr->mp_nexthop_prefer_global) | |
10305 | json_object_boolean_true_add(json_nexthop_ll, | |
10306 | "used"); | |
10307 | else | |
10308 | json_object_boolean_true_add( | |
10309 | json_nexthop_global, "used"); | |
10310 | } else { | |
10311 | vty_out(vty, " (%s) %s\n", | |
10312 | inet_ntop(AF_INET6, &attr->mp_nexthop_local, | |
10313 | buf, INET6_ADDRSTRLEN), | |
10314 | attr->mp_nexthop_prefer_global | |
10315 | ? "(prefer-global)" | |
10316 | : "(used)"); | |
10317 | } | |
10318 | } | |
10319 | /* If we do not have a link-local nexthop then we must flag the | |
10320 | global as "used" */ | |
10321 | else { | |
10322 | if (json_paths) | |
10323 | json_object_boolean_true_add(json_nexthop_global, | |
10324 | "used"); | |
10325 | } | |
10326 | ||
10327 | if (safi == SAFI_EVPN && | |
10328 | bgp_evpn_is_esi_valid(&attr->esi)) { | |
10329 | route_vty_out_detail_es_info(vty, path, attr, json_path); | |
10330 | } | |
10331 | ||
10332 | /* Line 3 display Origin, Med, Locpref, Weight, Tag, valid, | |
10333 | * Int/Ext/Local, Atomic, best */ | |
10334 | if (json_paths) | |
10335 | json_object_string_add(json_path, "origin", | |
10336 | bgp_origin_long_str[attr->origin]); | |
10337 | else | |
10338 | vty_out(vty, " Origin %s", | |
10339 | bgp_origin_long_str[attr->origin]); | |
10340 | ||
10341 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) { | |
10342 | if (json_paths) | |
10343 | json_object_int_add(json_path, "metric", attr->med); | |
10344 | else | |
10345 | vty_out(vty, ", metric %u", attr->med); | |
10346 | } | |
10347 | ||
10348 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) { | |
10349 | if (json_paths) | |
10350 | json_object_int_add(json_path, "locPrf", | |
10351 | attr->local_pref); | |
10352 | else | |
10353 | vty_out(vty, ", localpref %u", attr->local_pref); | |
10354 | } | |
10355 | ||
10356 | if (attr->weight != 0) { | |
10357 | if (json_paths) | |
10358 | json_object_int_add(json_path, "weight", attr->weight); | |
10359 | else | |
10360 | vty_out(vty, ", weight %u", attr->weight); | |
10361 | } | |
10362 | ||
10363 | if (attr->tag != 0) { | |
10364 | if (json_paths) | |
10365 | json_object_int_add(json_path, "tag", attr->tag); | |
10366 | else | |
10367 | vty_out(vty, ", tag %" ROUTE_TAG_PRI, attr->tag); | |
10368 | } | |
10369 | ||
10370 | if (!CHECK_FLAG(path->flags, BGP_PATH_VALID)) { | |
10371 | if (json_paths) | |
10372 | json_object_boolean_false_add(json_path, "valid"); | |
10373 | else | |
10374 | vty_out(vty, ", invalid"); | |
10375 | } else if (!CHECK_FLAG(path->flags, BGP_PATH_HISTORY)) { | |
10376 | if (json_paths) | |
10377 | json_object_boolean_true_add(json_path, "valid"); | |
10378 | else | |
10379 | vty_out(vty, ", valid"); | |
10380 | } | |
10381 | ||
10382 | if (json_paths) | |
10383 | json_object_int_add(json_path, "version", bn->version); | |
10384 | ||
10385 | if (path->peer != bgp->peer_self) { | |
10386 | if (path->peer->as == path->peer->local_as) { | |
10387 | if (CHECK_FLAG(bgp->config, BGP_CONFIG_CONFEDERATION)) { | |
10388 | if (json_paths) | |
10389 | json_object_string_add( | |
10390 | json_peer, "type", | |
10391 | "confed-internal"); | |
10392 | else | |
10393 | vty_out(vty, ", confed-internal"); | |
10394 | } else { | |
10395 | if (json_paths) | |
10396 | json_object_string_add( | |
10397 | json_peer, "type", "internal"); | |
10398 | else | |
10399 | vty_out(vty, ", internal"); | |
10400 | } | |
10401 | } else { | |
10402 | if (bgp_confederation_peers_check(bgp, | |
10403 | path->peer->as)) { | |
10404 | if (json_paths) | |
10405 | json_object_string_add( | |
10406 | json_peer, "type", | |
10407 | "confed-external"); | |
10408 | else | |
10409 | vty_out(vty, ", confed-external"); | |
10410 | } else { | |
10411 | if (json_paths) | |
10412 | json_object_string_add( | |
10413 | json_peer, "type", "external"); | |
10414 | else | |
10415 | vty_out(vty, ", external"); | |
10416 | } | |
10417 | } | |
10418 | } else if (path->sub_type == BGP_ROUTE_AGGREGATE) { | |
10419 | if (json_paths) { | |
10420 | json_object_boolean_true_add(json_path, "aggregated"); | |
10421 | json_object_boolean_true_add(json_path, "local"); | |
10422 | } else { | |
10423 | vty_out(vty, ", aggregated, local"); | |
10424 | } | |
10425 | } else if (path->type != ZEBRA_ROUTE_BGP) { | |
10426 | if (json_paths) | |
10427 | json_object_boolean_true_add(json_path, "sourced"); | |
10428 | else | |
10429 | vty_out(vty, ", sourced"); | |
10430 | } else { | |
10431 | if (json_paths) { | |
10432 | json_object_boolean_true_add(json_path, "sourced"); | |
10433 | json_object_boolean_true_add(json_path, "local"); | |
10434 | } else { | |
10435 | vty_out(vty, ", sourced, local"); | |
10436 | } | |
10437 | } | |
10438 | ||
10439 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ATOMIC_AGGREGATE)) { | |
10440 | if (json_paths) | |
10441 | json_object_boolean_true_add(json_path, | |
10442 | "atomicAggregate"); | |
10443 | else | |
10444 | vty_out(vty, ", atomic-aggregate"); | |
10445 | } | |
10446 | ||
10447 | if (CHECK_FLAG(path->flags, BGP_PATH_MULTIPATH) | |
10448 | || (CHECK_FLAG(path->flags, BGP_PATH_SELECTED) | |
10449 | && bgp_path_info_mpath_count(path))) { | |
10450 | if (json_paths) | |
10451 | json_object_boolean_true_add(json_path, "multipath"); | |
10452 | else | |
10453 | vty_out(vty, ", multipath"); | |
10454 | } | |
10455 | ||
10456 | // Mark the bestpath(s) | |
10457 | if (CHECK_FLAG(path->flags, BGP_PATH_DMED_SELECTED)) { | |
10458 | first_as = aspath_get_first_as(attr->aspath); | |
10459 | ||
10460 | if (json_paths) { | |
10461 | if (!json_bestpath) | |
10462 | json_bestpath = json_object_new_object(); | |
10463 | json_object_int_add(json_bestpath, "bestpathFromAs", | |
10464 | first_as); | |
10465 | } else { | |
10466 | if (first_as) | |
10467 | vty_out(vty, ", bestpath-from-AS %u", first_as); | |
10468 | else | |
10469 | vty_out(vty, ", bestpath-from-AS Local"); | |
10470 | } | |
10471 | } | |
10472 | ||
10473 | if (CHECK_FLAG(path->flags, BGP_PATH_SELECTED)) { | |
10474 | if (json_paths) { | |
10475 | if (!json_bestpath) | |
10476 | json_bestpath = json_object_new_object(); | |
10477 | json_object_boolean_true_add(json_bestpath, "overall"); | |
10478 | json_object_string_add( | |
10479 | json_bestpath, "selectionReason", | |
10480 | bgp_path_selection_reason2str(bn->reason)); | |
10481 | } else { | |
10482 | vty_out(vty, ", best"); | |
10483 | vty_out(vty, " (%s)", | |
10484 | bgp_path_selection_reason2str(bn->reason)); | |
10485 | } | |
10486 | } | |
10487 | ||
10488 | if (rpki_curr_state != RPKI_NOT_BEING_USED) { | |
10489 | if (json_paths) | |
10490 | json_object_string_add( | |
10491 | json_path, "rpkiValidationState", | |
10492 | bgp_rpki_validation2str(rpki_curr_state)); | |
10493 | else | |
10494 | vty_out(vty, ", rpki validation-state: %s", | |
10495 | bgp_rpki_validation2str(rpki_curr_state)); | |
10496 | } | |
10497 | ||
10498 | if (json_bestpath) | |
10499 | json_object_object_add(json_path, "bestpath", json_bestpath); | |
10500 | ||
10501 | if (!json_paths) | |
10502 | vty_out(vty, "\n"); | |
10503 | ||
10504 | /* Line 4 display Community */ | |
10505 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES)) { | |
10506 | if (json_paths) { | |
10507 | if (!bgp_attr_get_community(attr)->json) | |
10508 | community_str(bgp_attr_get_community(attr), | |
10509 | true); | |
10510 | json_object_lock(bgp_attr_get_community(attr)->json); | |
10511 | json_object_object_add( | |
10512 | json_path, "community", | |
10513 | bgp_attr_get_community(attr)->json); | |
10514 | } else { | |
10515 | vty_out(vty, " Community: %s\n", | |
10516 | bgp_attr_get_community(attr)->str); | |
10517 | } | |
10518 | } | |
10519 | ||
10520 | /* Line 5 display Extended-community */ | |
10521 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)) { | |
10522 | if (json_paths) { | |
10523 | json_ext_community = json_object_new_object(); | |
10524 | json_object_string_add( | |
10525 | json_ext_community, "string", | |
10526 | bgp_attr_get_ecommunity(attr)->str); | |
10527 | json_object_object_add(json_path, "extendedCommunity", | |
10528 | json_ext_community); | |
10529 | } else { | |
10530 | vty_out(vty, " Extended Community: %s\n", | |
10531 | bgp_attr_get_ecommunity(attr)->str); | |
10532 | } | |
10533 | } | |
10534 | ||
10535 | /* Line 6 display Large community */ | |
10536 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES)) { | |
10537 | if (json_paths) { | |
10538 | if (!bgp_attr_get_lcommunity(attr)->json) | |
10539 | lcommunity_str(bgp_attr_get_lcommunity(attr), | |
10540 | true); | |
10541 | json_object_lock(bgp_attr_get_lcommunity(attr)->json); | |
10542 | json_object_object_add( | |
10543 | json_path, "largeCommunity", | |
10544 | bgp_attr_get_lcommunity(attr)->json); | |
10545 | } else { | |
10546 | vty_out(vty, " Large Community: %s\n", | |
10547 | bgp_attr_get_lcommunity(attr)->str); | |
10548 | } | |
10549 | } | |
10550 | ||
10551 | /* Line 7 display Originator, Cluster-id */ | |
10552 | if ((attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)) | |
10553 | || (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST))) { | |
10554 | char buf[BUFSIZ] = {0}; | |
10555 | ||
10556 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)) { | |
10557 | if (json_paths) | |
10558 | json_object_string_addf(json_path, | |
10559 | "originatorId", "%pI4", | |
10560 | &attr->originator_id); | |
10561 | else | |
10562 | vty_out(vty, " Originator: %pI4", | |
10563 | &attr->originator_id); | |
10564 | } | |
10565 | ||
10566 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) { | |
10567 | struct cluster_list *cluster = | |
10568 | bgp_attr_get_cluster(attr); | |
10569 | int i; | |
10570 | ||
10571 | if (json_paths) { | |
10572 | json_cluster_list = json_object_new_object(); | |
10573 | json_cluster_list_list = | |
10574 | json_object_new_array(); | |
10575 | ||
10576 | for (i = 0; i < cluster->length / 4; i++) { | |
10577 | json_string = json_object_new_string( | |
10578 | inet_ntop(AF_INET, | |
10579 | &cluster->list[i], | |
10580 | buf, sizeof(buf))); | |
10581 | json_object_array_add( | |
10582 | json_cluster_list_list, | |
10583 | json_string); | |
10584 | } | |
10585 | ||
10586 | /* | |
10587 | * struct cluster_list does not have | |
10588 | * "str" variable like aspath and community | |
10589 | * do. Add this someday if someone asks | |
10590 | * for it. | |
10591 | * json_object_string_add(json_cluster_list, | |
10592 | * "string", cluster->str); | |
10593 | */ | |
10594 | json_object_object_add(json_cluster_list, | |
10595 | "list", | |
10596 | json_cluster_list_list); | |
10597 | json_object_object_add(json_path, "clusterList", | |
10598 | json_cluster_list); | |
10599 | } else { | |
10600 | vty_out(vty, ", Cluster list: "); | |
10601 | ||
10602 | for (i = 0; i < cluster->length / 4; i++) { | |
10603 | vty_out(vty, "%pI4 ", | |
10604 | &cluster->list[i]); | |
10605 | } | |
10606 | } | |
10607 | } | |
10608 | ||
10609 | if (!json_paths) | |
10610 | vty_out(vty, "\n"); | |
10611 | } | |
10612 | ||
10613 | if (path->extra && path->extra->damp_info) | |
10614 | bgp_damp_info_vty(vty, path, afi, safi, json_path); | |
10615 | ||
10616 | /* Remote Label */ | |
10617 | if (path->extra && bgp_is_valid_label(&path->extra->label[0]) | |
10618 | && (safi != SAFI_EVPN && !is_route_parent_evpn(path))) { | |
10619 | mpls_label_t label = label_pton(&path->extra->label[0]); | |
10620 | ||
10621 | if (json_paths) | |
10622 | json_object_int_add(json_path, "remoteLabel", label); | |
10623 | else | |
10624 | vty_out(vty, " Remote label: %d\n", label); | |
10625 | } | |
10626 | ||
10627 | /* Remote SID */ | |
10628 | if (path->extra && path->extra->num_sids > 0 && safi != SAFI_EVPN) { | |
10629 | inet_ntop(AF_INET6, &path->extra->sid[0].sid, buf, sizeof(buf)); | |
10630 | if (json_paths) | |
10631 | json_object_string_add(json_path, "remoteSid", buf); | |
10632 | else | |
10633 | vty_out(vty, " Remote SID: %s\n", buf); | |
10634 | } | |
10635 | ||
10636 | /* Label Index */ | |
10637 | if (attr->label_index != BGP_INVALID_LABEL_INDEX) { | |
10638 | if (json_paths) | |
10639 | json_object_int_add(json_path, "labelIndex", | |
10640 | attr->label_index); | |
10641 | else | |
10642 | vty_out(vty, " Label Index: %d\n", | |
10643 | attr->label_index); | |
10644 | } | |
10645 | ||
10646 | /* Line 8 display Addpath IDs */ | |
10647 | if (path->addpath_rx_id | |
10648 | || bgp_addpath_info_has_ids(&path->tx_addpath)) { | |
10649 | if (json_paths) { | |
10650 | json_object_int_add(json_path, "addpathRxId", | |
10651 | path->addpath_rx_id); | |
10652 | ||
10653 | /* Keep backwards compatibility with the old API | |
10654 | * by putting TX All's ID in the old field | |
10655 | */ | |
10656 | json_object_int_add( | |
10657 | json_path, "addpathTxId", | |
10658 | path->tx_addpath | |
10659 | .addpath_tx_id[BGP_ADDPATH_ALL]); | |
10660 | ||
10661 | /* ... but create a specific field for each | |
10662 | * strategy | |
10663 | */ | |
10664 | for (i = 0; i < BGP_ADDPATH_MAX; i++) { | |
10665 | json_object_int_add( | |
10666 | json_path, | |
10667 | bgp_addpath_names(i)->id_json_name, | |
10668 | path->tx_addpath.addpath_tx_id[i]); | |
10669 | } | |
10670 | } else { | |
10671 | vty_out(vty, " AddPath ID: RX %u, ", | |
10672 | path->addpath_rx_id); | |
10673 | ||
10674 | route_vty_out_tx_ids(vty, &path->tx_addpath); | |
10675 | } | |
10676 | } | |
10677 | ||
10678 | /* If we used addpath to TX a non-bestpath we need to display | |
10679 | * "Advertised to" on a path-by-path basis | |
10680 | */ | |
10681 | if (bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
10682 | first = 1; | |
10683 | ||
10684 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
10685 | addpath_capable = | |
10686 | bgp_addpath_encode_tx(peer, afi, safi); | |
10687 | has_adj = bgp_adj_out_lookup( | |
10688 | peer, path->net, | |
10689 | bgp_addpath_id_for_peer(peer, afi, safi, | |
10690 | &path->tx_addpath)); | |
10691 | ||
10692 | if ((addpath_capable && has_adj) | |
10693 | || (!addpath_capable && has_adj | |
10694 | && CHECK_FLAG(path->flags, | |
10695 | BGP_PATH_SELECTED))) { | |
10696 | if (json_path && !json_adv_to) | |
10697 | json_adv_to = json_object_new_object(); | |
10698 | ||
10699 | route_vty_out_advertised_to( | |
10700 | vty, peer, &first, | |
10701 | " Advertised to:", json_adv_to); | |
10702 | } | |
10703 | } | |
10704 | ||
10705 | if (json_path) { | |
10706 | if (json_adv_to) { | |
10707 | json_object_object_add( | |
10708 | json_path, "advertisedTo", json_adv_to); | |
10709 | } | |
10710 | } else { | |
10711 | if (!first) { | |
10712 | vty_out(vty, "\n"); | |
10713 | } | |
10714 | } | |
10715 | } | |
10716 | ||
10717 | /* Line 9 display Uptime */ | |
10718 | tbuf = time(NULL) - (bgp_clock() - path->uptime); | |
10719 | if (json_paths) { | |
10720 | json_last_update = json_object_new_object(); | |
10721 | json_object_int_add(json_last_update, "epoch", tbuf); | |
10722 | json_object_string_add(json_last_update, "string", | |
10723 | ctime(&tbuf)); | |
10724 | json_object_object_add(json_path, "lastUpdate", | |
10725 | json_last_update); | |
10726 | } else | |
10727 | vty_out(vty, " Last update: %s", ctime(&tbuf)); | |
10728 | ||
10729 | /* Line 10 display PMSI tunnel attribute, if present */ | |
10730 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL)) { | |
10731 | const char *str = lookup_msg(bgp_pmsi_tnltype_str, | |
10732 | bgp_attr_get_pmsi_tnl_type(attr), | |
10733 | PMSI_TNLTYPE_STR_DEFAULT); | |
10734 | ||
10735 | if (json_paths) { | |
10736 | json_pmsi = json_object_new_object(); | |
10737 | json_object_string_add(json_pmsi, "tunnelType", str); | |
10738 | json_object_int_add(json_pmsi, "label", | |
10739 | label2vni(&attr->label)); | |
10740 | json_object_object_add(json_path, "pmsi", json_pmsi); | |
10741 | } else | |
10742 | vty_out(vty, " PMSI Tunnel Type: %s, label: %d\n", | |
10743 | str, label2vni(&attr->label)); | |
10744 | } | |
10745 | ||
10746 | if (path->peer->t_gr_restart && | |
10747 | CHECK_FLAG(path->flags, BGP_PATH_STALE)) { | |
10748 | unsigned long gr_remaining = | |
10749 | thread_timer_remain_second(path->peer->t_gr_restart); | |
10750 | ||
10751 | if (json_paths) { | |
10752 | json_object_int_add(json_path, | |
10753 | "gracefulRestartSecondsRemaining", | |
10754 | gr_remaining); | |
10755 | } else | |
10756 | vty_out(vty, | |
10757 | " Time until Graceful Restart stale route deleted: %lu\n", | |
10758 | gr_remaining); | |
10759 | } | |
10760 | ||
10761 | if (path->peer->t_llgr_stale[afi][safi] && | |
10762 | bgp_attr_get_community(attr) && | |
10763 | community_include(bgp_attr_get_community(attr), | |
10764 | COMMUNITY_LLGR_STALE)) { | |
10765 | unsigned long llgr_remaining = thread_timer_remain_second( | |
10766 | path->peer->t_llgr_stale[afi][safi]); | |
10767 | ||
10768 | if (json_paths) { | |
10769 | json_object_int_add(json_path, "llgrSecondsRemaining", | |
10770 | llgr_remaining); | |
10771 | } else | |
10772 | vty_out(vty, | |
10773 | " Time until Long-lived stale route deleted: %lu\n", | |
10774 | llgr_remaining); | |
10775 | } | |
10776 | ||
10777 | /* Output some debug about internal state of the dest flags */ | |
10778 | if (json_paths) { | |
10779 | if (CHECK_FLAG(bn->flags, BGP_NODE_PROCESS_SCHEDULED)) | |
10780 | json_object_boolean_true_add(json_path, "processScheduled"); | |
10781 | if (CHECK_FLAG(bn->flags, BGP_NODE_USER_CLEAR)) | |
10782 | json_object_boolean_true_add(json_path, "userCleared"); | |
10783 | if (CHECK_FLAG(bn->flags, BGP_NODE_LABEL_CHANGED)) | |
10784 | json_object_boolean_true_add(json_path, "labelChanged"); | |
10785 | if (CHECK_FLAG(bn->flags, BGP_NODE_REGISTERED_FOR_LABEL)) | |
10786 | json_object_boolean_true_add(json_path, "registeredForLabel"); | |
10787 | if (CHECK_FLAG(bn->flags, BGP_NODE_SELECT_DEFER)) | |
10788 | json_object_boolean_true_add(json_path, "selectDefered"); | |
10789 | if (CHECK_FLAG(bn->flags, BGP_NODE_FIB_INSTALLED)) | |
10790 | json_object_boolean_true_add(json_path, "fibInstalled"); | |
10791 | if (CHECK_FLAG(bn->flags, BGP_NODE_FIB_INSTALL_PENDING)) | |
10792 | json_object_boolean_true_add(json_path, "fibPending"); | |
10793 | ||
10794 | if (json_nexthop_global || json_nexthop_ll) { | |
10795 | json_nexthops = json_object_new_array(); | |
10796 | ||
10797 | if (json_nexthop_global) | |
10798 | json_object_array_add(json_nexthops, | |
10799 | json_nexthop_global); | |
10800 | ||
10801 | if (json_nexthop_ll) | |
10802 | json_object_array_add(json_nexthops, | |
10803 | json_nexthop_ll); | |
10804 | ||
10805 | json_object_object_add(json_path, "nexthops", | |
10806 | json_nexthops); | |
10807 | } | |
10808 | ||
10809 | json_object_object_add(json_path, "peer", json_peer); | |
10810 | json_object_array_add(json_paths, json_path); | |
10811 | } | |
10812 | } | |
10813 | ||
10814 | #define BGP_SHOW_HEADER_CSV "Flags, Network, Next Hop, Metric, LocPrf, Weight, Path" | |
10815 | #define BGP_SHOW_DAMP_HEADER " Network From Reuse Path\n" | |
10816 | #define BGP_SHOW_FLAP_HEADER " Network From Flaps Duration Reuse Path\n" | |
10817 | ||
10818 | static int bgp_show_regexp(struct vty *vty, struct bgp *bgp, const char *regstr, | |
10819 | afi_t afi, safi_t safi, enum bgp_show_type type, | |
10820 | bool use_json); | |
10821 | static int bgp_show_community(struct vty *vty, struct bgp *bgp, | |
10822 | const char *comstr, int exact, afi_t afi, | |
10823 | safi_t safi, uint16_t show_flags); | |
10824 | ||
10825 | static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi, | |
10826 | struct bgp_table *table, enum bgp_show_type type, | |
10827 | void *output_arg, const char *rd, int is_last, | |
10828 | unsigned long *output_cum, unsigned long *total_cum, | |
10829 | unsigned long *json_header_depth, uint16_t show_flags, | |
10830 | enum rpki_states rpki_target_state) | |
10831 | { | |
10832 | struct bgp_path_info *pi; | |
10833 | struct bgp_dest *dest; | |
10834 | bool header = true; | |
10835 | bool json_detail_header = false; | |
10836 | int display; | |
10837 | unsigned long output_count = 0; | |
10838 | unsigned long total_count = 0; | |
10839 | struct prefix *p; | |
10840 | json_object *json_paths = NULL; | |
10841 | int first = 1; | |
10842 | bool use_json = CHECK_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
10843 | bool wide = CHECK_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
10844 | bool all = CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_ALL); | |
10845 | ||
10846 | if (output_cum && *output_cum != 0) | |
10847 | header = false; | |
10848 | ||
10849 | if (use_json && !*json_header_depth) { | |
10850 | if (all) | |
10851 | *json_header_depth = 1; | |
10852 | else { | |
10853 | vty_out(vty, "{\n"); | |
10854 | *json_header_depth = 2; | |
10855 | } | |
10856 | ||
10857 | vty_out(vty, | |
10858 | " \"vrfId\": %d,\n \"vrfName\": \"%s\",\n \"tableVersion\": %" PRId64 | |
10859 | ",\n \"routerId\": \"%pI4\",\n \"defaultLocPrf\": %u,\n" | |
10860 | " \"localAS\": %u,\n \"routes\": { ", | |
10861 | bgp->vrf_id == VRF_UNKNOWN ? -1 : (int)bgp->vrf_id, | |
10862 | bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT | |
10863 | ? VRF_DEFAULT_NAME | |
10864 | : bgp->name, | |
10865 | table->version, &bgp->router_id, | |
10866 | bgp->default_local_pref, bgp->as); | |
10867 | if (rd) { | |
10868 | vty_out(vty, " \"routeDistinguishers\" : {"); | |
10869 | ++*json_header_depth; | |
10870 | } | |
10871 | } | |
10872 | ||
10873 | if (use_json && rd) { | |
10874 | vty_out(vty, " \"%s\" : { ", rd); | |
10875 | } | |
10876 | ||
10877 | /* Check for 'json detail', where we need header output once per dest */ | |
10878 | if (use_json && CHECK_FLAG(show_flags, BGP_SHOW_OPT_DETAIL) && | |
10879 | type != bgp_show_type_dampend_paths && | |
10880 | type != bgp_show_type_damp_neighbor && | |
10881 | type != bgp_show_type_flap_statistics && | |
10882 | type != bgp_show_type_flap_neighbor) | |
10883 | json_detail_header = true; | |
10884 | ||
10885 | /* Start processing of routes. */ | |
10886 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
10887 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
10888 | enum rpki_states rpki_curr_state = RPKI_NOT_BEING_USED; | |
10889 | bool json_detail = json_detail_header; | |
10890 | ||
10891 | pi = bgp_dest_get_bgp_path_info(dest); | |
10892 | if (pi == NULL) | |
10893 | continue; | |
10894 | ||
10895 | display = 0; | |
10896 | if (use_json) | |
10897 | json_paths = json_object_new_array(); | |
10898 | else | |
10899 | json_paths = NULL; | |
10900 | ||
10901 | for (; pi; pi = pi->next) { | |
10902 | struct community *picomm = NULL; | |
10903 | ||
10904 | picomm = bgp_attr_get_community(pi->attr); | |
10905 | ||
10906 | total_count++; | |
10907 | ||
10908 | if (type == bgp_show_type_prefix_version) { | |
10909 | uint32_t version = | |
10910 | strtoul(output_arg, NULL, 10); | |
10911 | if (dest->version < version) | |
10912 | continue; | |
10913 | } | |
10914 | ||
10915 | if (type == bgp_show_type_community_alias) { | |
10916 | char *alias = output_arg; | |
10917 | char **communities; | |
10918 | int num; | |
10919 | bool found = false; | |
10920 | ||
10921 | if (picomm) { | |
10922 | frrstr_split(picomm->str, " ", | |
10923 | &communities, &num); | |
10924 | for (int i = 0; i < num; i++) { | |
10925 | const char *com2alias = | |
10926 | bgp_community2alias( | |
10927 | communities[i]); | |
10928 | if (!found | |
10929 | && strcmp(alias, com2alias) | |
10930 | == 0) | |
10931 | found = true; | |
10932 | XFREE(MTYPE_TMP, | |
10933 | communities[i]); | |
10934 | } | |
10935 | XFREE(MTYPE_TMP, communities); | |
10936 | } | |
10937 | ||
10938 | if (!found && | |
10939 | bgp_attr_get_lcommunity(pi->attr)) { | |
10940 | frrstr_split(bgp_attr_get_lcommunity( | |
10941 | pi->attr) | |
10942 | ->str, | |
10943 | " ", &communities, &num); | |
10944 | for (int i = 0; i < num; i++) { | |
10945 | const char *com2alias = | |
10946 | bgp_community2alias( | |
10947 | communities[i]); | |
10948 | if (!found | |
10949 | && strcmp(alias, com2alias) | |
10950 | == 0) | |
10951 | found = true; | |
10952 | XFREE(MTYPE_TMP, | |
10953 | communities[i]); | |
10954 | } | |
10955 | XFREE(MTYPE_TMP, communities); | |
10956 | } | |
10957 | ||
10958 | if (!found) | |
10959 | continue; | |
10960 | } | |
10961 | ||
10962 | if (type == bgp_show_type_rpki) { | |
10963 | if (dest_p->family == AF_INET | |
10964 | || dest_p->family == AF_INET6) | |
10965 | rpki_curr_state = hook_call( | |
10966 | bgp_rpki_prefix_status, | |
10967 | pi->peer, pi->attr, dest_p); | |
10968 | if (rpki_target_state != RPKI_NOT_BEING_USED | |
10969 | && rpki_curr_state != rpki_target_state) | |
10970 | continue; | |
10971 | } | |
10972 | ||
10973 | if (type == bgp_show_type_flap_statistics | |
10974 | || type == bgp_show_type_flap_neighbor | |
10975 | || type == bgp_show_type_dampend_paths | |
10976 | || type == bgp_show_type_damp_neighbor) { | |
10977 | if (!(pi->extra && pi->extra->damp_info)) | |
10978 | continue; | |
10979 | } | |
10980 | if (type == bgp_show_type_regexp) { | |
10981 | regex_t *regex = output_arg; | |
10982 | ||
10983 | if (bgp_regexec(regex, pi->attr->aspath) | |
10984 | == REG_NOMATCH) | |
10985 | continue; | |
10986 | } | |
10987 | if (type == bgp_show_type_prefix_list) { | |
10988 | struct prefix_list *plist = output_arg; | |
10989 | ||
10990 | if (prefix_list_apply(plist, dest_p) | |
10991 | != PREFIX_PERMIT) | |
10992 | continue; | |
10993 | } | |
10994 | if (type == bgp_show_type_filter_list) { | |
10995 | struct as_list *as_list = output_arg; | |
10996 | ||
10997 | if (as_list_apply(as_list, pi->attr->aspath) | |
10998 | != AS_FILTER_PERMIT) | |
10999 | continue; | |
11000 | } | |
11001 | if (type == bgp_show_type_route_map) { | |
11002 | struct route_map *rmap = output_arg; | |
11003 | struct bgp_path_info path; | |
11004 | struct attr dummy_attr; | |
11005 | route_map_result_t ret; | |
11006 | ||
11007 | dummy_attr = *pi->attr; | |
11008 | ||
11009 | path.peer = pi->peer; | |
11010 | path.attr = &dummy_attr; | |
11011 | ||
11012 | ret = route_map_apply(rmap, dest_p, &path); | |
11013 | bgp_attr_flush(&dummy_attr); | |
11014 | if (ret == RMAP_DENYMATCH) | |
11015 | continue; | |
11016 | } | |
11017 | if (type == bgp_show_type_neighbor | |
11018 | || type == bgp_show_type_flap_neighbor | |
11019 | || type == bgp_show_type_damp_neighbor) { | |
11020 | union sockunion *su = output_arg; | |
11021 | ||
11022 | if (pi->peer == NULL | |
11023 | || pi->peer->su_remote == NULL | |
11024 | || !sockunion_same(pi->peer->su_remote, su)) | |
11025 | continue; | |
11026 | } | |
11027 | if (type == bgp_show_type_cidr_only) { | |
11028 | uint32_t destination; | |
11029 | ||
11030 | destination = ntohl(dest_p->u.prefix4.s_addr); | |
11031 | if (IN_CLASSC(destination) | |
11032 | && dest_p->prefixlen == 24) | |
11033 | continue; | |
11034 | if (IN_CLASSB(destination) | |
11035 | && dest_p->prefixlen == 16) | |
11036 | continue; | |
11037 | if (IN_CLASSA(destination) | |
11038 | && dest_p->prefixlen == 8) | |
11039 | continue; | |
11040 | } | |
11041 | if (type == bgp_show_type_prefix_longer) { | |
11042 | p = output_arg; | |
11043 | if (!prefix_match(p, dest_p)) | |
11044 | continue; | |
11045 | } | |
11046 | if (type == bgp_show_type_community_all) { | |
11047 | if (!picomm) | |
11048 | continue; | |
11049 | } | |
11050 | if (type == bgp_show_type_community) { | |
11051 | struct community *com = output_arg; | |
11052 | ||
11053 | if (!picomm || !community_match(picomm, com)) | |
11054 | continue; | |
11055 | } | |
11056 | if (type == bgp_show_type_community_exact) { | |
11057 | struct community *com = output_arg; | |
11058 | ||
11059 | if (!picomm || !community_cmp(picomm, com)) | |
11060 | continue; | |
11061 | } | |
11062 | if (type == bgp_show_type_community_list) { | |
11063 | struct community_list *list = output_arg; | |
11064 | ||
11065 | if (!community_list_match(picomm, list)) | |
11066 | continue; | |
11067 | } | |
11068 | if (type == bgp_show_type_community_list_exact) { | |
11069 | struct community_list *list = output_arg; | |
11070 | ||
11071 | if (!community_list_exact_match(picomm, list)) | |
11072 | continue; | |
11073 | } | |
11074 | if (type == bgp_show_type_lcommunity) { | |
11075 | struct lcommunity *lcom = output_arg; | |
11076 | ||
11077 | if (!bgp_attr_get_lcommunity(pi->attr) || | |
11078 | !lcommunity_match( | |
11079 | bgp_attr_get_lcommunity(pi->attr), | |
11080 | lcom)) | |
11081 | continue; | |
11082 | } | |
11083 | ||
11084 | if (type == bgp_show_type_lcommunity_exact) { | |
11085 | struct lcommunity *lcom = output_arg; | |
11086 | ||
11087 | if (!bgp_attr_get_lcommunity(pi->attr) || | |
11088 | !lcommunity_cmp( | |
11089 | bgp_attr_get_lcommunity(pi->attr), | |
11090 | lcom)) | |
11091 | continue; | |
11092 | } | |
11093 | if (type == bgp_show_type_lcommunity_list) { | |
11094 | struct community_list *list = output_arg; | |
11095 | ||
11096 | if (!lcommunity_list_match( | |
11097 | bgp_attr_get_lcommunity(pi->attr), | |
11098 | list)) | |
11099 | continue; | |
11100 | } | |
11101 | if (type | |
11102 | == bgp_show_type_lcommunity_list_exact) { | |
11103 | struct community_list *list = output_arg; | |
11104 | ||
11105 | if (!lcommunity_list_exact_match( | |
11106 | bgp_attr_get_lcommunity(pi->attr), | |
11107 | list)) | |
11108 | continue; | |
11109 | } | |
11110 | if (type == bgp_show_type_lcommunity_all) { | |
11111 | if (!bgp_attr_get_lcommunity(pi->attr)) | |
11112 | continue; | |
11113 | } | |
11114 | if (type == bgp_show_type_dampend_paths | |
11115 | || type == bgp_show_type_damp_neighbor) { | |
11116 | if (!CHECK_FLAG(pi->flags, BGP_PATH_DAMPED) | |
11117 | || CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) | |
11118 | continue; | |
11119 | } | |
11120 | ||
11121 | if (!use_json && header) { | |
11122 | vty_out(vty, | |
11123 | "BGP table version is %" PRIu64 | |
11124 | ", local router ID is %pI4, vrf id ", | |
11125 | table->version, &bgp->router_id); | |
11126 | if (bgp->vrf_id == VRF_UNKNOWN) | |
11127 | vty_out(vty, "%s", VRFID_NONE_STR); | |
11128 | else | |
11129 | vty_out(vty, "%u", bgp->vrf_id); | |
11130 | vty_out(vty, "\n"); | |
11131 | vty_out(vty, "Default local pref %u, ", | |
11132 | bgp->default_local_pref); | |
11133 | vty_out(vty, "local AS %u\n", bgp->as); | |
11134 | vty_out(vty, BGP_SHOW_SCODE_HEADER); | |
11135 | vty_out(vty, BGP_SHOW_NCODE_HEADER); | |
11136 | vty_out(vty, BGP_SHOW_OCODE_HEADER); | |
11137 | vty_out(vty, BGP_SHOW_RPKI_HEADER); | |
11138 | if (type == bgp_show_type_dampend_paths | |
11139 | || type == bgp_show_type_damp_neighbor) | |
11140 | vty_out(vty, BGP_SHOW_DAMP_HEADER); | |
11141 | else if (type == bgp_show_type_flap_statistics | |
11142 | || type == bgp_show_type_flap_neighbor) | |
11143 | vty_out(vty, BGP_SHOW_FLAP_HEADER); | |
11144 | else | |
11145 | vty_out(vty, (wide ? BGP_SHOW_HEADER_WIDE | |
11146 | : BGP_SHOW_HEADER)); | |
11147 | header = false; | |
11148 | ||
11149 | } else if (json_detail && json_paths != NULL) { | |
11150 | const struct prefix_rd *prd; | |
11151 | json_object *jtemp; | |
11152 | ||
11153 | /* Use common detail header, for most types; | |
11154 | * need a json 'object'. | |
11155 | */ | |
11156 | ||
11157 | jtemp = json_object_new_object(); | |
11158 | prd = bgp_rd_from_dest(dest, safi); | |
11159 | ||
11160 | route_vty_out_detail_header( | |
11161 | vty, bgp, dest, prd, table->afi, | |
11162 | safi, jtemp); | |
11163 | ||
11164 | json_object_array_add(json_paths, jtemp); | |
11165 | ||
11166 | json_detail = false; | |
11167 | } | |
11168 | ||
11169 | if (rd != NULL && !display && !output_count) { | |
11170 | if (!use_json) | |
11171 | vty_out(vty, | |
11172 | "Route Distinguisher: %s\n", | |
11173 | rd); | |
11174 | } | |
11175 | if (type == bgp_show_type_dampend_paths | |
11176 | || type == bgp_show_type_damp_neighbor) | |
11177 | damp_route_vty_out(vty, dest_p, pi, display, | |
11178 | AFI_IP, safi, use_json, | |
11179 | json_paths); | |
11180 | else if (type == bgp_show_type_flap_statistics | |
11181 | || type == bgp_show_type_flap_neighbor) | |
11182 | flap_route_vty_out(vty, dest_p, pi, display, | |
11183 | AFI_IP, safi, use_json, | |
11184 | json_paths); | |
11185 | else { | |
11186 | if (CHECK_FLAG(show_flags, BGP_SHOW_OPT_DETAIL)) | |
11187 | route_vty_out_detail( | |
11188 | vty, bgp, dest, pi, | |
11189 | family2afi(dest_p->family), | |
11190 | safi, RPKI_NOT_BEING_USED, | |
11191 | json_paths); | |
11192 | else | |
11193 | route_vty_out(vty, dest_p, pi, display, | |
11194 | safi, json_paths, wide); | |
11195 | } | |
11196 | display++; | |
11197 | } | |
11198 | ||
11199 | if (display) { | |
11200 | output_count++; | |
11201 | if (!use_json) | |
11202 | continue; | |
11203 | ||
11204 | /* encode prefix */ | |
11205 | if (dest_p->family == AF_FLOWSPEC) { | |
11206 | char retstr[BGP_FLOWSPEC_STRING_DISPLAY_MAX]; | |
11207 | ||
11208 | ||
11209 | bgp_fs_nlri_get_string( | |
11210 | (unsigned char *) | |
11211 | dest_p->u.prefix_flowspec.ptr, | |
11212 | dest_p->u.prefix_flowspec.prefixlen, | |
11213 | retstr, NLRI_STRING_FORMAT_MIN, NULL, | |
11214 | family2afi(dest_p->u | |
11215 | .prefix_flowspec.family)); | |
11216 | if (first) | |
11217 | vty_out(vty, "\"%s/%d\": ", retstr, | |
11218 | dest_p->u.prefix_flowspec | |
11219 | .prefixlen); | |
11220 | else | |
11221 | vty_out(vty, ",\"%s/%d\": ", retstr, | |
11222 | dest_p->u.prefix_flowspec | |
11223 | .prefixlen); | |
11224 | } else { | |
11225 | if (first) | |
11226 | vty_out(vty, "\"%pFX\": ", dest_p); | |
11227 | else | |
11228 | vty_out(vty, ",\"%pFX\": ", dest_p); | |
11229 | } | |
11230 | vty_json(vty, json_paths); | |
11231 | json_paths = NULL; | |
11232 | first = 0; | |
11233 | } else | |
11234 | json_object_free(json_paths); | |
11235 | } | |
11236 | ||
11237 | if (output_cum) { | |
11238 | output_count += *output_cum; | |
11239 | *output_cum = output_count; | |
11240 | } | |
11241 | if (total_cum) { | |
11242 | total_count += *total_cum; | |
11243 | *total_cum = total_count; | |
11244 | } | |
11245 | if (use_json) { | |
11246 | if (rd) { | |
11247 | vty_out(vty, " }%s ", (is_last ? "" : ",")); | |
11248 | } | |
11249 | if (is_last) { | |
11250 | unsigned long i; | |
11251 | for (i = 0; i < *json_header_depth; ++i) | |
11252 | vty_out(vty, " } "); | |
11253 | if (!all) | |
11254 | vty_out(vty, "\n"); | |
11255 | } | |
11256 | } else { | |
11257 | if (is_last) { | |
11258 | /* No route is displayed */ | |
11259 | if (output_count == 0) { | |
11260 | if (type == bgp_show_type_normal) | |
11261 | vty_out(vty, | |
11262 | "No BGP prefixes displayed, %ld exist\n", | |
11263 | total_count); | |
11264 | } else | |
11265 | vty_out(vty, | |
11266 | "\nDisplayed %ld routes and %ld total paths\n", | |
11267 | output_count, total_count); | |
11268 | } | |
11269 | } | |
11270 | ||
11271 | return CMD_SUCCESS; | |
11272 | } | |
11273 | ||
11274 | int bgp_show_table_rd(struct vty *vty, struct bgp *bgp, safi_t safi, | |
11275 | struct bgp_table *table, struct prefix_rd *prd_match, | |
11276 | enum bgp_show_type type, void *output_arg, bool use_json) | |
11277 | { | |
11278 | struct bgp_dest *dest, *next; | |
11279 | unsigned long output_cum = 0; | |
11280 | unsigned long total_cum = 0; | |
11281 | unsigned long json_header_depth = 0; | |
11282 | struct bgp_table *itable; | |
11283 | bool show_msg; | |
11284 | uint16_t show_flags = 0; | |
11285 | ||
11286 | show_msg = (!use_json && type == bgp_show_type_normal); | |
11287 | ||
11288 | if (use_json) | |
11289 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
11290 | ||
11291 | for (dest = bgp_table_top(table); dest; dest = next) { | |
11292 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
11293 | ||
11294 | next = bgp_route_next(dest); | |
11295 | if (prd_match && memcmp(dest_p->u.val, prd_match->val, 8) != 0) | |
11296 | continue; | |
11297 | ||
11298 | itable = bgp_dest_get_bgp_table_info(dest); | |
11299 | if (itable != NULL) { | |
11300 | struct prefix_rd prd; | |
11301 | char rd[RD_ADDRSTRLEN]; | |
11302 | ||
11303 | memcpy(&prd, dest_p, sizeof(struct prefix_rd)); | |
11304 | prefix_rd2str(&prd, rd, sizeof(rd)); | |
11305 | bgp_show_table(vty, bgp, safi, itable, type, output_arg, | |
11306 | rd, next == NULL, &output_cum, | |
11307 | &total_cum, &json_header_depth, | |
11308 | show_flags, RPKI_NOT_BEING_USED); | |
11309 | if (next == NULL) | |
11310 | show_msg = false; | |
11311 | } | |
11312 | } | |
11313 | if (show_msg) { | |
11314 | if (output_cum == 0) | |
11315 | vty_out(vty, "No BGP prefixes displayed, %ld exist\n", | |
11316 | total_cum); | |
11317 | else | |
11318 | vty_out(vty, | |
11319 | "\nDisplayed %ld routes and %ld total paths\n", | |
11320 | output_cum, total_cum); | |
11321 | } | |
11322 | return CMD_SUCCESS; | |
11323 | } | |
11324 | ||
11325 | static int bgp_show(struct vty *vty, struct bgp *bgp, afi_t afi, safi_t safi, | |
11326 | enum bgp_show_type type, void *output_arg, | |
11327 | uint16_t show_flags, enum rpki_states rpki_target_state) | |
11328 | { | |
11329 | struct bgp_table *table; | |
11330 | unsigned long json_header_depth = 0; | |
11331 | bool use_json = CHECK_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
11332 | ||
11333 | if (bgp == NULL) { | |
11334 | bgp = bgp_get_default(); | |
11335 | } | |
11336 | ||
11337 | if (bgp == NULL) { | |
11338 | if (!use_json) | |
11339 | vty_out(vty, "No BGP process is configured\n"); | |
11340 | else | |
11341 | vty_out(vty, "{}\n"); | |
11342 | return CMD_WARNING; | |
11343 | } | |
11344 | ||
11345 | /* Labeled-unicast routes live in the unicast table. */ | |
11346 | if (safi == SAFI_LABELED_UNICAST) | |
11347 | safi = SAFI_UNICAST; | |
11348 | ||
11349 | table = bgp->rib[afi][safi]; | |
11350 | /* use MPLS and ENCAP specific shows until they are merged */ | |
11351 | if (safi == SAFI_MPLS_VPN) { | |
11352 | return bgp_show_table_rd(vty, bgp, safi, table, NULL, type, | |
11353 | output_arg, use_json); | |
11354 | } | |
11355 | ||
11356 | if (safi == SAFI_FLOWSPEC && type == bgp_show_type_detail) { | |
11357 | return bgp_show_table_flowspec(vty, bgp, afi, table, type, | |
11358 | output_arg, use_json, | |
11359 | 1, NULL, NULL); | |
11360 | } | |
11361 | ||
11362 | return bgp_show_table(vty, bgp, safi, table, type, output_arg, NULL, 1, | |
11363 | NULL, NULL, &json_header_depth, show_flags, | |
11364 | rpki_target_state); | |
11365 | } | |
11366 | ||
11367 | static void bgp_show_all_instances_routes_vty(struct vty *vty, afi_t afi, | |
11368 | safi_t safi, uint16_t show_flags) | |
11369 | { | |
11370 | struct listnode *node, *nnode; | |
11371 | struct bgp *bgp; | |
11372 | int is_first = 1; | |
11373 | bool route_output = false; | |
11374 | bool use_json = CHECK_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
11375 | ||
11376 | if (use_json) | |
11377 | vty_out(vty, "{\n"); | |
11378 | ||
11379 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) { | |
11380 | route_output = true; | |
11381 | if (use_json) { | |
11382 | if (!is_first) | |
11383 | vty_out(vty, ",\n"); | |
11384 | else | |
11385 | is_first = 0; | |
11386 | ||
11387 | vty_out(vty, "\"%s\":", | |
11388 | (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
11389 | ? VRF_DEFAULT_NAME | |
11390 | : bgp->name); | |
11391 | } else { | |
11392 | vty_out(vty, "\nInstance %s:\n", | |
11393 | (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
11394 | ? VRF_DEFAULT_NAME | |
11395 | : bgp->name); | |
11396 | } | |
11397 | bgp_show(vty, bgp, afi, safi, bgp_show_type_normal, NULL, | |
11398 | show_flags, RPKI_NOT_BEING_USED); | |
11399 | } | |
11400 | ||
11401 | if (use_json) | |
11402 | vty_out(vty, "}\n"); | |
11403 | else if (!route_output) | |
11404 | vty_out(vty, "%% BGP instance not found\n"); | |
11405 | } | |
11406 | ||
11407 | /* Header of detailed BGP route information */ | |
11408 | void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp, | |
11409 | struct bgp_dest *dest, | |
11410 | const struct prefix_rd *prd, | |
11411 | afi_t afi, safi_t safi, json_object *json) | |
11412 | { | |
11413 | struct bgp_path_info *pi; | |
11414 | const struct prefix *p; | |
11415 | struct peer *peer; | |
11416 | struct listnode *node, *nnode; | |
11417 | char buf1[RD_ADDRSTRLEN]; | |
11418 | int count = 0; | |
11419 | int best = 0; | |
11420 | int suppress = 0; | |
11421 | int accept_own = 0; | |
11422 | int route_filter_translated_v4 = 0; | |
11423 | int route_filter_v4 = 0; | |
11424 | int route_filter_translated_v6 = 0; | |
11425 | int route_filter_v6 = 0; | |
11426 | int llgr_stale = 0; | |
11427 | int no_llgr = 0; | |
11428 | int accept_own_nexthop = 0; | |
11429 | int blackhole = 0; | |
11430 | int no_export = 0; | |
11431 | int no_advertise = 0; | |
11432 | int local_as = 0; | |
11433 | int no_peer = 0; | |
11434 | int first = 1; | |
11435 | int has_valid_label = 0; | |
11436 | mpls_label_t label = 0; | |
11437 | json_object *json_adv_to = NULL; | |
11438 | ||
11439 | p = bgp_dest_get_prefix(dest); | |
11440 | has_valid_label = bgp_is_valid_label(&dest->local_label); | |
11441 | ||
11442 | if (has_valid_label) | |
11443 | label = label_pton(&dest->local_label); | |
11444 | ||
11445 | if (safi == SAFI_EVPN) { | |
11446 | ||
11447 | if (!json) { | |
11448 | vty_out(vty, "BGP routing table entry for %s%s%pFX\n", | |
11449 | prd ? prefix_rd2str(prd, buf1, sizeof(buf1)) | |
11450 | : "", | |
11451 | prd ? ":" : "", (struct prefix_evpn *)p); | |
11452 | } else { | |
11453 | json_object_string_add(json, "rd", | |
11454 | prd ? prefix_rd2str(prd, buf1, sizeof(buf1)) : | |
11455 | ""); | |
11456 | bgp_evpn_route2json((struct prefix_evpn *)p, json); | |
11457 | } | |
11458 | } else { | |
11459 | if (!json) { | |
11460 | vty_out(vty, | |
11461 | "BGP routing table entry for %s%s%pFX, version %" PRIu64 | |
11462 | "\n", | |
11463 | ((safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP) | |
11464 | ? prefix_rd2str(prd, buf1, | |
11465 | sizeof(buf1)) | |
11466 | : ""), | |
11467 | safi == SAFI_MPLS_VPN ? ":" : "", p, | |
11468 | dest->version); | |
11469 | ||
11470 | } else { | |
11471 | json_object_string_addf(json, "prefix", "%pFX", p); | |
11472 | json_object_int_add(json, "version", dest->version); | |
11473 | ||
11474 | } | |
11475 | } | |
11476 | ||
11477 | if (has_valid_label) { | |
11478 | if (json) | |
11479 | json_object_int_add(json, "localLabel", label); | |
11480 | else | |
11481 | vty_out(vty, "Local label: %d\n", label); | |
11482 | } | |
11483 | ||
11484 | if (!json) | |
11485 | if (bgp_labeled_safi(safi) && safi != SAFI_EVPN) | |
11486 | vty_out(vty, "not allocated\n"); | |
11487 | ||
11488 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
11489 | struct community *picomm = NULL; | |
11490 | ||
11491 | picomm = bgp_attr_get_community(pi->attr); | |
11492 | ||
11493 | count++; | |
11494 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
11495 | best = count; | |
11496 | if (bgp_path_suppressed(pi)) | |
11497 | suppress = 1; | |
11498 | ||
11499 | if (!picomm) | |
11500 | continue; | |
11501 | ||
11502 | no_advertise += community_include( | |
11503 | picomm, COMMUNITY_NO_ADVERTISE); | |
11504 | no_export += | |
11505 | community_include(picomm, COMMUNITY_NO_EXPORT); | |
11506 | local_as += | |
11507 | community_include(picomm, COMMUNITY_LOCAL_AS); | |
11508 | accept_own += | |
11509 | community_include(picomm, COMMUNITY_ACCEPT_OWN); | |
11510 | route_filter_translated_v4 += community_include( | |
11511 | picomm, COMMUNITY_ROUTE_FILTER_TRANSLATED_v4); | |
11512 | route_filter_translated_v6 += community_include( | |
11513 | picomm, COMMUNITY_ROUTE_FILTER_TRANSLATED_v6); | |
11514 | route_filter_v4 += community_include( | |
11515 | picomm, COMMUNITY_ROUTE_FILTER_v4); | |
11516 | route_filter_v6 += community_include( | |
11517 | picomm, COMMUNITY_ROUTE_FILTER_v6); | |
11518 | llgr_stale += | |
11519 | community_include(picomm, COMMUNITY_LLGR_STALE); | |
11520 | no_llgr += community_include(picomm, COMMUNITY_NO_LLGR); | |
11521 | accept_own_nexthop += community_include( | |
11522 | picomm, COMMUNITY_ACCEPT_OWN_NEXTHOP); | |
11523 | blackhole += | |
11524 | community_include(picomm, COMMUNITY_BLACKHOLE); | |
11525 | no_peer += community_include(picomm, COMMUNITY_NO_PEER); | |
11526 | } | |
11527 | } | |
11528 | ||
11529 | if (!json) { | |
11530 | vty_out(vty, "Paths: (%d available", count); | |
11531 | if (best) { | |
11532 | vty_out(vty, ", best #%d", best); | |
11533 | if (safi == SAFI_UNICAST) { | |
11534 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
11535 | vty_out(vty, ", table %s", | |
11536 | VRF_DEFAULT_NAME); | |
11537 | else | |
11538 | vty_out(vty, ", vrf %s", | |
11539 | bgp->name); | |
11540 | } | |
11541 | } else | |
11542 | vty_out(vty, ", no best path"); | |
11543 | ||
11544 | if (accept_own) | |
11545 | vty_out(vty, | |
11546 | ", accept own local route exported and imported in different VRF"); | |
11547 | else if (route_filter_translated_v4) | |
11548 | vty_out(vty, | |
11549 | ", mark translated RTs for VPNv4 route filtering"); | |
11550 | else if (route_filter_v4) | |
11551 | vty_out(vty, | |
11552 | ", attach RT as-is for VPNv4 route filtering"); | |
11553 | else if (route_filter_translated_v6) | |
11554 | vty_out(vty, | |
11555 | ", mark translated RTs for VPNv6 route filtering"); | |
11556 | else if (route_filter_v6) | |
11557 | vty_out(vty, | |
11558 | ", attach RT as-is for VPNv6 route filtering"); | |
11559 | else if (llgr_stale) | |
11560 | vty_out(vty, | |
11561 | ", mark routes to be retained for a longer time. Requires support for Long-lived BGP Graceful Restart"); | |
11562 | else if (no_llgr) | |
11563 | vty_out(vty, | |
11564 | ", mark routes to not be treated according to Long-lived BGP Graceful Restart operations"); | |
11565 | else if (accept_own_nexthop) | |
11566 | vty_out(vty, | |
11567 | ", accept local nexthop"); | |
11568 | else if (blackhole) | |
11569 | vty_out(vty, ", inform peer to blackhole prefix"); | |
11570 | else if (no_export) | |
11571 | vty_out(vty, ", not advertised to EBGP peer"); | |
11572 | else if (no_advertise) | |
11573 | vty_out(vty, ", not advertised to any peer"); | |
11574 | else if (local_as) | |
11575 | vty_out(vty, ", not advertised outside local AS"); | |
11576 | else if (no_peer) | |
11577 | vty_out(vty, | |
11578 | ", inform EBGP peer not to advertise to their EBGP peers"); | |
11579 | ||
11580 | if (suppress) | |
11581 | vty_out(vty, | |
11582 | ", Advertisements suppressed by an aggregate."); | |
11583 | vty_out(vty, ")\n"); | |
11584 | } | |
11585 | ||
11586 | /* If we are not using addpath then we can display Advertised to and | |
11587 | * that will | |
11588 | * show what peers we advertised the bestpath to. If we are using | |
11589 | * addpath | |
11590 | * though then we must display Advertised to on a path-by-path basis. */ | |
11591 | if (!bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
11592 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
11593 | if (bgp_adj_out_lookup(peer, dest, 0)) { | |
11594 | if (json && !json_adv_to) | |
11595 | json_adv_to = json_object_new_object(); | |
11596 | ||
11597 | route_vty_out_advertised_to( | |
11598 | vty, peer, &first, | |
11599 | " Advertised to non peer-group peers:\n ", | |
11600 | json_adv_to); | |
11601 | } | |
11602 | } | |
11603 | ||
11604 | if (json) { | |
11605 | if (json_adv_to) { | |
11606 | json_object_object_add(json, "advertisedTo", | |
11607 | json_adv_to); | |
11608 | } | |
11609 | } else { | |
11610 | if (first) | |
11611 | vty_out(vty, " Not advertised to any peer"); | |
11612 | vty_out(vty, "\n"); | |
11613 | } | |
11614 | } | |
11615 | } | |
11616 | ||
11617 | static void bgp_show_path_info(const struct prefix_rd *pfx_rd, | |
11618 | struct bgp_dest *bgp_node, struct vty *vty, | |
11619 | struct bgp *bgp, afi_t afi, safi_t safi, | |
11620 | json_object *json, enum bgp_path_type pathtype, | |
11621 | int *display, enum rpki_states rpki_target_state) | |
11622 | { | |
11623 | struct bgp_path_info *pi; | |
11624 | int header = 1; | |
11625 | char rdbuf[RD_ADDRSTRLEN]; | |
11626 | json_object *json_header = NULL; | |
11627 | json_object *json_paths = NULL; | |
11628 | const struct prefix *p = bgp_dest_get_prefix(bgp_node); | |
11629 | ||
11630 | for (pi = bgp_dest_get_bgp_path_info(bgp_node); pi; pi = pi->next) { | |
11631 | enum rpki_states rpki_curr_state = RPKI_NOT_BEING_USED; | |
11632 | ||
11633 | if (p->family == AF_INET || p->family == AF_INET6) | |
11634 | rpki_curr_state = hook_call(bgp_rpki_prefix_status, | |
11635 | pi->peer, pi->attr, p); | |
11636 | ||
11637 | if (rpki_target_state != RPKI_NOT_BEING_USED | |
11638 | && rpki_curr_state != rpki_target_state) | |
11639 | continue; | |
11640 | ||
11641 | if (json && !json_paths) { | |
11642 | /* Instantiate json_paths only if path is valid */ | |
11643 | json_paths = json_object_new_array(); | |
11644 | if (pfx_rd) { | |
11645 | prefix_rd2str(pfx_rd, rdbuf, sizeof(rdbuf)); | |
11646 | json_header = json_object_new_object(); | |
11647 | } else | |
11648 | json_header = json; | |
11649 | } | |
11650 | ||
11651 | if (header) { | |
11652 | route_vty_out_detail_header( | |
11653 | vty, bgp, bgp_node, pfx_rd, | |
11654 | AFI_IP, safi, json_header); | |
11655 | header = 0; | |
11656 | } | |
11657 | (*display)++; | |
11658 | ||
11659 | if (pathtype == BGP_PATH_SHOW_ALL | |
11660 | || (pathtype == BGP_PATH_SHOW_BESTPATH | |
11661 | && CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
11662 | || (pathtype == BGP_PATH_SHOW_MULTIPATH | |
11663 | && (CHECK_FLAG(pi->flags, BGP_PATH_MULTIPATH) | |
11664 | || CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)))) | |
11665 | route_vty_out_detail(vty, bgp, bgp_node, pi, AFI_IP, | |
11666 | safi, rpki_curr_state, json_paths); | |
11667 | } | |
11668 | ||
11669 | if (json && json_paths) { | |
11670 | json_object_object_add(json_header, "paths", json_paths); | |
11671 | ||
11672 | if (pfx_rd) | |
11673 | json_object_object_add(json, rdbuf, json_header); | |
11674 | } | |
11675 | } | |
11676 | ||
11677 | /* | |
11678 | * Return rd based on safi | |
11679 | */ | |
11680 | static const struct prefix_rd *bgp_rd_from_dest(const struct bgp_dest *dest, | |
11681 | safi_t safi) | |
11682 | { | |
11683 | switch (safi) { | |
11684 | case SAFI_MPLS_VPN: | |
11685 | case SAFI_ENCAP: | |
11686 | case SAFI_EVPN: | |
11687 | return (struct prefix_rd *)(bgp_dest_get_prefix(dest)); | |
11688 | default: | |
11689 | return NULL; | |
11690 | ||
11691 | } | |
11692 | } | |
11693 | ||
11694 | /* Display specified route of BGP table. */ | |
11695 | static int bgp_show_route_in_table(struct vty *vty, struct bgp *bgp, | |
11696 | struct bgp_table *rib, const char *ip_str, | |
11697 | afi_t afi, safi_t safi, | |
11698 | enum rpki_states rpki_target_state, | |
11699 | struct prefix_rd *prd, int prefix_check, | |
11700 | enum bgp_path_type pathtype, bool use_json) | |
11701 | { | |
11702 | int ret; | |
11703 | int display = 0; | |
11704 | struct prefix match; | |
11705 | struct bgp_dest *dest; | |
11706 | struct bgp_dest *rm; | |
11707 | struct bgp_table *table; | |
11708 | json_object *json = NULL; | |
11709 | json_object *json_paths = NULL; | |
11710 | ||
11711 | /* Check IP address argument. */ | |
11712 | ret = str2prefix(ip_str, &match); | |
11713 | if (!ret) { | |
11714 | vty_out(vty, "address is malformed\n"); | |
11715 | return CMD_WARNING; | |
11716 | } | |
11717 | ||
11718 | match.family = afi2family(afi); | |
11719 | ||
11720 | if (use_json) | |
11721 | json = json_object_new_object(); | |
11722 | ||
11723 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP) { | |
11724 | for (dest = bgp_table_top(rib); dest; | |
11725 | dest = bgp_route_next(dest)) { | |
11726 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
11727 | ||
11728 | if (prd && memcmp(dest_p->u.val, prd->val, 8) != 0) | |
11729 | continue; | |
11730 | table = bgp_dest_get_bgp_table_info(dest); | |
11731 | if (!table) | |
11732 | continue; | |
11733 | ||
11734 | rm = bgp_node_match(table, &match); | |
11735 | if (rm == NULL) | |
11736 | continue; | |
11737 | ||
11738 | const struct prefix *rm_p = bgp_dest_get_prefix(rm); | |
11739 | if (prefix_check | |
11740 | && rm_p->prefixlen != match.prefixlen) { | |
11741 | bgp_dest_unlock_node(rm); | |
11742 | continue; | |
11743 | } | |
11744 | ||
11745 | bgp_show_path_info((struct prefix_rd *)dest_p, rm, vty, | |
11746 | bgp, afi, safi, json, pathtype, | |
11747 | &display, rpki_target_state); | |
11748 | ||
11749 | bgp_dest_unlock_node(rm); | |
11750 | } | |
11751 | } else if (safi == SAFI_EVPN) { | |
11752 | struct bgp_dest *longest_pfx; | |
11753 | bool is_exact_pfxlen_match = false; | |
11754 | ||
11755 | for (dest = bgp_table_top(rib); dest; | |
11756 | dest = bgp_route_next(dest)) { | |
11757 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
11758 | ||
11759 | if (prd && memcmp(&dest_p->u.val, prd->val, 8) != 0) | |
11760 | continue; | |
11761 | table = bgp_dest_get_bgp_table_info(dest); | |
11762 | if (!table) | |
11763 | continue; | |
11764 | ||
11765 | longest_pfx = NULL; | |
11766 | is_exact_pfxlen_match = false; | |
11767 | /* | |
11768 | * Search through all the prefixes for a match. The | |
11769 | * pfx's are enumerated in ascending order of pfxlens. | |
11770 | * So, the last pfx match is the longest match. Set | |
11771 | * is_exact_pfxlen_match when we get exact pfxlen match | |
11772 | */ | |
11773 | for (rm = bgp_table_top(table); rm; | |
11774 | rm = bgp_route_next(rm)) { | |
11775 | const struct prefix *rm_p = | |
11776 | bgp_dest_get_prefix(rm); | |
11777 | /* | |
11778 | * Get prefixlen of the ip-prefix within type5 | |
11779 | * evpn route | |
11780 | */ | |
11781 | if (evpn_type5_prefix_match(rm_p, &match) | |
11782 | && rm->info) { | |
11783 | longest_pfx = rm; | |
11784 | int type5_pfxlen = | |
11785 | bgp_evpn_get_type5_prefixlen( | |
11786 | rm_p); | |
11787 | if (type5_pfxlen == match.prefixlen) { | |
11788 | is_exact_pfxlen_match = true; | |
11789 | bgp_dest_unlock_node(rm); | |
11790 | break; | |
11791 | } | |
11792 | } | |
11793 | } | |
11794 | ||
11795 | if (!longest_pfx) | |
11796 | continue; | |
11797 | ||
11798 | if (prefix_check && !is_exact_pfxlen_match) | |
11799 | continue; | |
11800 | ||
11801 | rm = longest_pfx; | |
11802 | bgp_dest_lock_node(rm); | |
11803 | ||
11804 | bgp_show_path_info((struct prefix_rd *)dest_p, rm, vty, | |
11805 | bgp, afi, safi, json, pathtype, | |
11806 | &display, rpki_target_state); | |
11807 | ||
11808 | bgp_dest_unlock_node(rm); | |
11809 | } | |
11810 | } else if (safi == SAFI_FLOWSPEC) { | |
11811 | if (use_json) | |
11812 | json_paths = json_object_new_array(); | |
11813 | ||
11814 | display = bgp_flowspec_display_match_per_ip(afi, rib, | |
11815 | &match, prefix_check, | |
11816 | vty, | |
11817 | use_json, | |
11818 | json_paths); | |
11819 | if (use_json) { | |
11820 | if (display) | |
11821 | json_object_object_add(json, "paths", | |
11822 | json_paths); | |
11823 | else | |
11824 | json_object_free(json_paths); | |
11825 | } | |
11826 | } else { | |
11827 | dest = bgp_node_match(rib, &match); | |
11828 | if (dest != NULL) { | |
11829 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
11830 | if (!prefix_check | |
11831 | || dest_p->prefixlen == match.prefixlen) { | |
11832 | bgp_show_path_info(NULL, dest, vty, bgp, afi, | |
11833 | safi, json, pathtype, | |
11834 | &display, rpki_target_state); | |
11835 | } | |
11836 | ||
11837 | bgp_dest_unlock_node(dest); | |
11838 | } | |
11839 | } | |
11840 | ||
11841 | if (use_json) { | |
11842 | vty_json(vty, json); | |
11843 | } else { | |
11844 | if (!display) { | |
11845 | vty_out(vty, "%% Network not in table\n"); | |
11846 | return CMD_WARNING; | |
11847 | } | |
11848 | } | |
11849 | ||
11850 | return CMD_SUCCESS; | |
11851 | } | |
11852 | ||
11853 | /* Display specified route of Main RIB */ | |
11854 | static int bgp_show_route(struct vty *vty, struct bgp *bgp, const char *ip_str, | |
11855 | afi_t afi, safi_t safi, struct prefix_rd *prd, | |
11856 | int prefix_check, enum bgp_path_type pathtype, | |
11857 | enum rpki_states rpki_target_state, bool use_json) | |
11858 | { | |
11859 | if (!bgp) { | |
11860 | bgp = bgp_get_default(); | |
11861 | if (!bgp) { | |
11862 | if (!use_json) | |
11863 | vty_out(vty, "No BGP process is configured\n"); | |
11864 | else | |
11865 | vty_out(vty, "{}\n"); | |
11866 | return CMD_WARNING; | |
11867 | } | |
11868 | } | |
11869 | ||
11870 | /* labeled-unicast routes live in the unicast table */ | |
11871 | if (safi == SAFI_LABELED_UNICAST) | |
11872 | safi = SAFI_UNICAST; | |
11873 | ||
11874 | return bgp_show_route_in_table(vty, bgp, bgp->rib[afi][safi], ip_str, | |
11875 | afi, safi, rpki_target_state, prd, | |
11876 | prefix_check, pathtype, use_json); | |
11877 | } | |
11878 | ||
11879 | static int bgp_show_lcommunity(struct vty *vty, struct bgp *bgp, int argc, | |
11880 | struct cmd_token **argv, bool exact, afi_t afi, | |
11881 | safi_t safi, bool uj) | |
11882 | { | |
11883 | struct lcommunity *lcom; | |
11884 | struct buffer *b; | |
11885 | int i; | |
11886 | char *str; | |
11887 | int first = 0; | |
11888 | uint16_t show_flags = 0; | |
11889 | int ret; | |
11890 | ||
11891 | if (uj) | |
11892 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
11893 | ||
11894 | b = buffer_new(1024); | |
11895 | for (i = 0; i < argc; i++) { | |
11896 | if (first) | |
11897 | buffer_putc(b, ' '); | |
11898 | else { | |
11899 | if (strmatch(argv[i]->text, "AA:BB:CC")) { | |
11900 | first = 1; | |
11901 | buffer_putstr(b, argv[i]->arg); | |
11902 | } | |
11903 | } | |
11904 | } | |
11905 | buffer_putc(b, '\0'); | |
11906 | ||
11907 | str = buffer_getstr(b); | |
11908 | buffer_free(b); | |
11909 | ||
11910 | lcom = lcommunity_str2com(str); | |
11911 | XFREE(MTYPE_TMP, str); | |
11912 | if (!lcom) { | |
11913 | vty_out(vty, "%% Large-community malformed\n"); | |
11914 | return CMD_WARNING; | |
11915 | } | |
11916 | ||
11917 | ret = bgp_show(vty, bgp, afi, safi, | |
11918 | (exact ? bgp_show_type_lcommunity_exact | |
11919 | : bgp_show_type_lcommunity), | |
11920 | lcom, show_flags, RPKI_NOT_BEING_USED); | |
11921 | ||
11922 | lcommunity_free(&lcom); | |
11923 | return ret; | |
11924 | } | |
11925 | ||
11926 | static int bgp_show_lcommunity_list(struct vty *vty, struct bgp *bgp, | |
11927 | const char *lcom, bool exact, afi_t afi, | |
11928 | safi_t safi, bool uj) | |
11929 | { | |
11930 | struct community_list *list; | |
11931 | uint16_t show_flags = 0; | |
11932 | ||
11933 | if (uj) | |
11934 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
11935 | ||
11936 | ||
11937 | list = community_list_lookup(bgp_clist, lcom, 0, | |
11938 | LARGE_COMMUNITY_LIST_MASTER); | |
11939 | if (list == NULL) { | |
11940 | vty_out(vty, "%% %s is not a valid large-community-list name\n", | |
11941 | lcom); | |
11942 | return CMD_WARNING; | |
11943 | } | |
11944 | ||
11945 | return bgp_show(vty, bgp, afi, safi, | |
11946 | (exact ? bgp_show_type_lcommunity_list_exact | |
11947 | : bgp_show_type_lcommunity_list), | |
11948 | list, show_flags, RPKI_NOT_BEING_USED); | |
11949 | } | |
11950 | ||
11951 | DEFUN (show_ip_bgp_large_community_list, | |
11952 | show_ip_bgp_large_community_list_cmd, | |
11953 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] large-community-list <(1-500)|LCOMMUNITY_LIST_NAME> [exact-match] [json]", | |
11954 | SHOW_STR | |
11955 | IP_STR | |
11956 | BGP_STR | |
11957 | BGP_INSTANCE_HELP_STR | |
11958 | BGP_AFI_HELP_STR | |
11959 | BGP_SAFI_WITH_LABEL_HELP_STR | |
11960 | "Display routes matching the large-community-list\n" | |
11961 | "large-community-list number\n" | |
11962 | "large-community-list name\n" | |
11963 | "Exact match of the large-communities\n" | |
11964 | JSON_STR) | |
11965 | { | |
11966 | afi_t afi = AFI_IP6; | |
11967 | safi_t safi = SAFI_UNICAST; | |
11968 | int idx = 0; | |
11969 | bool exact_match = 0; | |
11970 | struct bgp *bgp = NULL; | |
11971 | bool uj = use_json(argc, argv); | |
11972 | ||
11973 | if (uj) | |
11974 | argc--; | |
11975 | ||
11976 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
11977 | &bgp, uj); | |
11978 | if (!idx) | |
11979 | return CMD_WARNING; | |
11980 | ||
11981 | argv_find(argv, argc, "large-community-list", &idx); | |
11982 | ||
11983 | const char *clist_number_or_name = argv[++idx]->arg; | |
11984 | ||
11985 | if (++idx < argc && strmatch(argv[idx]->text, "exact-match")) | |
11986 | exact_match = 1; | |
11987 | ||
11988 | return bgp_show_lcommunity_list(vty, bgp, clist_number_or_name, | |
11989 | exact_match, afi, safi, uj); | |
11990 | } | |
11991 | DEFUN (show_ip_bgp_large_community, | |
11992 | show_ip_bgp_large_community_cmd, | |
11993 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] large-community [<AA:BB:CC> [exact-match]] [json]", | |
11994 | SHOW_STR | |
11995 | IP_STR | |
11996 | BGP_STR | |
11997 | BGP_INSTANCE_HELP_STR | |
11998 | BGP_AFI_HELP_STR | |
11999 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12000 | "Display routes matching the large-communities\n" | |
12001 | "List of large-community numbers\n" | |
12002 | "Exact match of the large-communities\n" | |
12003 | JSON_STR) | |
12004 | { | |
12005 | afi_t afi = AFI_IP6; | |
12006 | safi_t safi = SAFI_UNICAST; | |
12007 | int idx = 0; | |
12008 | bool exact_match = 0; | |
12009 | struct bgp *bgp = NULL; | |
12010 | bool uj = use_json(argc, argv); | |
12011 | uint16_t show_flags = 0; | |
12012 | ||
12013 | if (uj) { | |
12014 | argc--; | |
12015 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
12016 | } | |
12017 | ||
12018 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12019 | &bgp, uj); | |
12020 | if (!idx) | |
12021 | return CMD_WARNING; | |
12022 | ||
12023 | if (argv_find(argv, argc, "AA:BB:CC", &idx)) { | |
12024 | if (argv_find(argv, argc, "exact-match", &idx)) | |
12025 | exact_match = 1; | |
12026 | return bgp_show_lcommunity(vty, bgp, argc, argv, | |
12027 | exact_match, afi, safi, uj); | |
12028 | } else | |
12029 | return bgp_show(vty, bgp, afi, safi, | |
12030 | bgp_show_type_lcommunity_all, NULL, show_flags, | |
12031 | RPKI_NOT_BEING_USED); | |
12032 | } | |
12033 | ||
12034 | static int bgp_table_stats_single(struct vty *vty, struct bgp *bgp, afi_t afi, | |
12035 | safi_t safi, struct json_object *json_array); | |
12036 | static int bgp_table_stats(struct vty *vty, struct bgp *bgp, afi_t afi, | |
12037 | safi_t safi, struct json_object *json); | |
12038 | ||
12039 | ||
12040 | DEFUN(show_ip_bgp_statistics_all, show_ip_bgp_statistics_all_cmd, | |
12041 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] statistics-all [json]", | |
12042 | SHOW_STR IP_STR BGP_STR BGP_INSTANCE_HELP_STR | |
12043 | "Display number of prefixes for all afi/safi\n" JSON_STR) | |
12044 | { | |
12045 | bool uj = use_json(argc, argv); | |
12046 | struct bgp *bgp = NULL; | |
12047 | safi_t safi = SAFI_UNICAST; | |
12048 | afi_t afi = AFI_IP6; | |
12049 | int idx = 0; | |
12050 | struct json_object *json_all = NULL; | |
12051 | struct json_object *json_afi_safi = NULL; | |
12052 | ||
12053 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12054 | &bgp, false); | |
12055 | if (!idx) | |
12056 | return CMD_WARNING; | |
12057 | ||
12058 | if (uj) | |
12059 | json_all = json_object_new_object(); | |
12060 | ||
12061 | FOREACH_AFI_SAFI (afi, safi) { | |
12062 | /* | |
12063 | * So limit output to those afi/safi pairs that | |
12064 | * actually have something interesting in them | |
12065 | */ | |
12066 | if (strmatch(get_afi_safi_str(afi, safi, true), | |
12067 | "Unknown")) { | |
12068 | continue; | |
12069 | } | |
12070 | if (uj) { | |
12071 | json_afi_safi = json_object_new_array(); | |
12072 | json_object_object_add( | |
12073 | json_all, | |
12074 | get_afi_safi_str(afi, safi, true), | |
12075 | json_afi_safi); | |
12076 | } else { | |
12077 | json_afi_safi = NULL; | |
12078 | } | |
12079 | ||
12080 | bgp_table_stats(vty, bgp, afi, safi, json_afi_safi); | |
12081 | } | |
12082 | ||
12083 | if (uj) | |
12084 | vty_json(vty, json_all); | |
12085 | ||
12086 | return CMD_SUCCESS; | |
12087 | } | |
12088 | ||
12089 | /* BGP route print out function without JSON */ | |
12090 | DEFUN (show_ip_bgp_l2vpn_evpn_statistics, | |
12091 | show_ip_bgp_l2vpn_evpn_statistics_cmd, | |
12092 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] l2vpn evpn statistics [json]", | |
12093 | SHOW_STR | |
12094 | IP_STR | |
12095 | BGP_STR | |
12096 | BGP_INSTANCE_HELP_STR | |
12097 | L2VPN_HELP_STR | |
12098 | EVPN_HELP_STR | |
12099 | "BGP RIB advertisement statistics\n" | |
12100 | JSON_STR) | |
12101 | { | |
12102 | afi_t afi = AFI_IP6; | |
12103 | safi_t safi = SAFI_UNICAST; | |
12104 | struct bgp *bgp = NULL; | |
12105 | int idx = 0, ret; | |
12106 | bool uj = use_json(argc, argv); | |
12107 | struct json_object *json_afi_safi = NULL, *json = NULL; | |
12108 | ||
12109 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12110 | &bgp, false); | |
12111 | if (!idx) | |
12112 | return CMD_WARNING; | |
12113 | ||
12114 | if (uj) | |
12115 | json_afi_safi = json_object_new_array(); | |
12116 | else | |
12117 | json_afi_safi = NULL; | |
12118 | ||
12119 | ret = bgp_table_stats(vty, bgp, afi, safi, json_afi_safi); | |
12120 | ||
12121 | if (uj) { | |
12122 | json = json_object_new_object(); | |
12123 | json_object_object_add(json, get_afi_safi_str(afi, safi, true), | |
12124 | json_afi_safi); | |
12125 | vty_json(vty, json); | |
12126 | } | |
12127 | return ret; | |
12128 | } | |
12129 | ||
12130 | /* BGP route print out function without JSON */ | |
12131 | DEFUN(show_ip_bgp_afi_safi_statistics, show_ip_bgp_afi_safi_statistics_cmd, | |
12132 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] [" BGP_AFI_CMD_STR | |
12133 | " [" BGP_SAFI_WITH_LABEL_CMD_STR | |
12134 | "]]\ | |
12135 | statistics [json]", | |
12136 | SHOW_STR IP_STR BGP_STR BGP_INSTANCE_HELP_STR BGP_AFI_HELP_STR | |
12137 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12138 | "BGP RIB advertisement statistics\n" JSON_STR) | |
12139 | { | |
12140 | afi_t afi = AFI_IP6; | |
12141 | safi_t safi = SAFI_UNICAST; | |
12142 | struct bgp *bgp = NULL; | |
12143 | int idx = 0, ret; | |
12144 | bool uj = use_json(argc, argv); | |
12145 | struct json_object *json_afi_safi = NULL, *json = NULL; | |
12146 | ||
12147 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12148 | &bgp, false); | |
12149 | if (!idx) | |
12150 | return CMD_WARNING; | |
12151 | ||
12152 | if (uj) | |
12153 | json_afi_safi = json_object_new_array(); | |
12154 | else | |
12155 | json_afi_safi = NULL; | |
12156 | ||
12157 | ret = bgp_table_stats(vty, bgp, afi, safi, json_afi_safi); | |
12158 | ||
12159 | if (uj) { | |
12160 | json = json_object_new_object(); | |
12161 | json_object_object_add(json, get_afi_safi_str(afi, safi, true), | |
12162 | json_afi_safi); | |
12163 | vty_json(vty, json); | |
12164 | } | |
12165 | return ret; | |
12166 | } | |
12167 | ||
12168 | DEFPY(show_ip_bgp_dampening_params, show_ip_bgp_dampening_params_cmd, | |
12169 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] [" BGP_AFI_CMD_STR | |
12170 | " [" BGP_SAFI_WITH_LABEL_CMD_STR | |
12171 | "]] [all$all] dampening parameters [json]", | |
12172 | SHOW_STR IP_STR BGP_STR BGP_INSTANCE_HELP_STR BGP_AFI_HELP_STR | |
12173 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12174 | "Display the entries for all address families\n" | |
12175 | "Display detailed information about dampening\n" | |
12176 | "Display detail of configured dampening parameters\n" | |
12177 | JSON_STR) | |
12178 | { | |
12179 | afi_t afi = AFI_IP6; | |
12180 | safi_t safi = SAFI_UNICAST; | |
12181 | struct bgp *bgp = NULL; | |
12182 | int idx = 0; | |
12183 | uint16_t show_flags = 0; | |
12184 | bool uj = use_json(argc, argv); | |
12185 | ||
12186 | if (uj) { | |
12187 | argc--; | |
12188 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
12189 | } | |
12190 | ||
12191 | /* [<ipv4|ipv6> [all]] */ | |
12192 | if (all) { | |
12193 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_ALL); | |
12194 | if (argv_find(argv, argc, "ipv4", &idx)) | |
12195 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP); | |
12196 | ||
12197 | if (argv_find(argv, argc, "ipv6", &idx)) | |
12198 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP6); | |
12199 | } | |
12200 | ||
12201 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12202 | &bgp, false); | |
12203 | if (!idx) | |
12204 | return CMD_WARNING; | |
12205 | ||
12206 | return bgp_show_dampening_parameters(vty, afi, safi, show_flags); | |
12207 | } | |
12208 | ||
12209 | /* BGP route print out function */ | |
12210 | DEFPY(show_ip_bgp, show_ip_bgp_cmd, | |
12211 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] [" BGP_AFI_CMD_STR | |
12212 | " [" BGP_SAFI_WITH_LABEL_CMD_STR | |
12213 | "]]\ | |
12214 | [all$all]\ | |
12215 | [cidr-only\ | |
12216 | |dampening <flap-statistics|dampened-paths>\ | |
12217 | |community [AA:NN|local-AS|no-advertise|no-export\ | |
12218 | |graceful-shutdown|no-peer|blackhole|llgr-stale|no-llgr\ | |
12219 | |accept-own|accept-own-nexthop|route-filter-v6\ | |
12220 | |route-filter-v4|route-filter-translated-v6\ | |
12221 | |route-filter-translated-v4] [exact-match]\ | |
12222 | |community-list <(1-500)|COMMUNITY_LIST_NAME> [exact-match]\ | |
12223 | |filter-list AS_PATH_FILTER_NAME\ | |
12224 | |prefix-list WORD\ | |
12225 | |route-map WORD\ | |
12226 | |rpki <invalid|valid|notfound>\ | |
12227 | |version (1-4294967295)\ | |
12228 | |alias ALIAS_NAME\ | |
12229 | |A.B.C.D/M longer-prefixes\ | |
12230 | |X:X::X:X/M longer-prefixes\ | |
12231 | ] [json$uj [detail$detail] | wide$wide]", | |
12232 | SHOW_STR IP_STR BGP_STR BGP_INSTANCE_HELP_STR BGP_AFI_HELP_STR | |
12233 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12234 | "Display the entries for all address families\n" | |
12235 | "Display only routes with non-natural netmasks\n" | |
12236 | "Display detailed information about dampening\n" | |
12237 | "Display flap statistics of routes\n" | |
12238 | "Display paths suppressed due to dampening\n" | |
12239 | "Display routes matching the communities\n" COMMUNITY_AANN_STR | |
12240 | "Do not send outside local AS (well-known community)\n" | |
12241 | "Do not advertise to any peer (well-known community)\n" | |
12242 | "Do not export to next AS (well-known community)\n" | |
12243 | "Graceful shutdown (well-known community)\n" | |
12244 | "Do not export to any peer (well-known community)\n" | |
12245 | "Inform EBGP peers to blackhole traffic to prefix (well-known community)\n" | |
12246 | "Staled Long-lived Graceful Restart VPN route (well-known community)\n" | |
12247 | "Removed because Long-lived Graceful Restart was not enabled for VPN route (well-known community)\n" | |
12248 | "Should accept local VPN route if exported and imported into different VRF (well-known community)\n" | |
12249 | "Should accept VPN route with local nexthop (well-known community)\n" | |
12250 | "RT VPNv6 route filtering (well-known community)\n" | |
12251 | "RT VPNv4 route filtering (well-known community)\n" | |
12252 | "RT translated VPNv6 route filtering (well-known community)\n" | |
12253 | "RT translated VPNv4 route filtering (well-known community)\n" | |
12254 | "Exact match of the communities\n" | |
12255 | "Community-list number\n" | |
12256 | "Community-list name\n" | |
12257 | "Display routes matching the community-list\n" | |
12258 | "Exact match of the communities\n" | |
12259 | "Display routes conforming to the filter-list\n" | |
12260 | "Regular expression access list name\n" | |
12261 | "Display routes conforming to the prefix-list\n" | |
12262 | "Prefix-list name\n" | |
12263 | "Display routes matching the route-map\n" | |
12264 | "A route-map to match on\n" | |
12265 | "RPKI route types\n" | |
12266 | "A valid path as determined by rpki\n" | |
12267 | "A invalid path as determined by rpki\n" | |
12268 | "A path that has no rpki data\n" | |
12269 | "Display prefixes with matching version numbers\n" | |
12270 | "Version number and above\n" | |
12271 | "Display prefixes with matching BGP community alias\n" | |
12272 | "BGP community alias\n" | |
12273 | "IPv4 prefix\n" | |
12274 | "Display route and more specific routes\n" | |
12275 | "IPv6 prefix\n" | |
12276 | "Display route and more specific routes\n" | |
12277 | JSON_STR | |
12278 | "Display detailed version of JSON output\n" | |
12279 | "Increase table width for longer prefixes\n") | |
12280 | { | |
12281 | afi_t afi = AFI_IP6; | |
12282 | safi_t safi = SAFI_UNICAST; | |
12283 | enum bgp_show_type sh_type = bgp_show_type_normal; | |
12284 | void *output_arg = NULL; | |
12285 | struct bgp *bgp = NULL; | |
12286 | int idx = 0; | |
12287 | int exact_match = 0; | |
12288 | char *community = NULL; | |
12289 | bool first = true; | |
12290 | uint16_t show_flags = 0; | |
12291 | enum rpki_states rpki_target_state = RPKI_NOT_BEING_USED; | |
12292 | struct prefix p; | |
12293 | ||
12294 | if (uj) { | |
12295 | argc--; | |
12296 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
12297 | } | |
12298 | ||
12299 | if (detail) | |
12300 | SET_FLAG(show_flags, BGP_SHOW_OPT_DETAIL); | |
12301 | ||
12302 | /* [<ipv4|ipv6> [all]] */ | |
12303 | if (all) { | |
12304 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_ALL); | |
12305 | ||
12306 | if (argv_find(argv, argc, "ipv4", &idx)) | |
12307 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP); | |
12308 | ||
12309 | if (argv_find(argv, argc, "ipv6", &idx)) | |
12310 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP6); | |
12311 | } | |
12312 | ||
12313 | if (wide) | |
12314 | SET_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
12315 | ||
12316 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12317 | &bgp, uj); | |
12318 | if (!idx) | |
12319 | return CMD_WARNING; | |
12320 | ||
12321 | if (argv_find(argv, argc, "cidr-only", &idx)) | |
12322 | sh_type = bgp_show_type_cidr_only; | |
12323 | ||
12324 | if (argv_find(argv, argc, "dampening", &idx)) { | |
12325 | if (argv_find(argv, argc, "dampened-paths", &idx)) | |
12326 | sh_type = bgp_show_type_dampend_paths; | |
12327 | else if (argv_find(argv, argc, "flap-statistics", &idx)) | |
12328 | sh_type = bgp_show_type_flap_statistics; | |
12329 | } | |
12330 | ||
12331 | if (argv_find(argv, argc, "community", &idx)) { | |
12332 | char *maybecomm = NULL; | |
12333 | ||
12334 | if (idx + 1 < argc) { | |
12335 | if (argv[idx + 1]->type == VARIABLE_TKN) | |
12336 | maybecomm = argv[idx + 1]->arg; | |
12337 | else | |
12338 | maybecomm = argv[idx + 1]->text; | |
12339 | } | |
12340 | ||
12341 | if (maybecomm && !strmatch(maybecomm, "json") | |
12342 | && !strmatch(maybecomm, "exact-match")) | |
12343 | community = maybecomm; | |
12344 | ||
12345 | if (argv_find(argv, argc, "exact-match", &idx)) | |
12346 | exact_match = 1; | |
12347 | ||
12348 | if (!community) | |
12349 | sh_type = bgp_show_type_community_all; | |
12350 | } | |
12351 | ||
12352 | if (argv_find(argv, argc, "community-list", &idx)) { | |
12353 | const char *clist_number_or_name = argv[++idx]->arg; | |
12354 | struct community_list *list; | |
12355 | ||
12356 | if (argv_find(argv, argc, "exact-match", &idx)) | |
12357 | exact_match = 1; | |
12358 | ||
12359 | list = community_list_lookup(bgp_clist, clist_number_or_name, 0, | |
12360 | COMMUNITY_LIST_MASTER); | |
12361 | if (list == NULL) { | |
12362 | vty_out(vty, | |
12363 | "%% %s is not a valid community-list name\n", | |
12364 | clist_number_or_name); | |
12365 | return CMD_WARNING; | |
12366 | } | |
12367 | ||
12368 | if (exact_match) | |
12369 | sh_type = bgp_show_type_community_list_exact; | |
12370 | else | |
12371 | sh_type = bgp_show_type_community_list; | |
12372 | output_arg = list; | |
12373 | } | |
12374 | ||
12375 | if (argv_find(argv, argc, "filter-list", &idx)) { | |
12376 | const char *filter = argv[++idx]->arg; | |
12377 | struct as_list *as_list; | |
12378 | ||
12379 | as_list = as_list_lookup(filter); | |
12380 | if (as_list == NULL) { | |
12381 | vty_out(vty, | |
12382 | "%% %s is not a valid AS-path access-list name\n", | |
12383 | filter); | |
12384 | return CMD_WARNING; | |
12385 | } | |
12386 | ||
12387 | sh_type = bgp_show_type_filter_list; | |
12388 | output_arg = as_list; | |
12389 | } | |
12390 | ||
12391 | if (argv_find(argv, argc, "prefix-list", &idx)) { | |
12392 | const char *prefix_list_str = argv[++idx]->arg; | |
12393 | struct prefix_list *plist; | |
12394 | ||
12395 | plist = prefix_list_lookup(afi, prefix_list_str); | |
12396 | if (plist == NULL) { | |
12397 | vty_out(vty, "%% %s is not a valid prefix-list name\n", | |
12398 | prefix_list_str); | |
12399 | return CMD_WARNING; | |
12400 | } | |
12401 | ||
12402 | sh_type = bgp_show_type_prefix_list; | |
12403 | output_arg = plist; | |
12404 | } | |
12405 | ||
12406 | if (argv_find(argv, argc, "route-map", &idx)) { | |
12407 | const char *rmap_str = argv[++idx]->arg; | |
12408 | struct route_map *rmap; | |
12409 | ||
12410 | rmap = route_map_lookup_by_name(rmap_str); | |
12411 | if (!rmap) { | |
12412 | vty_out(vty, "%% %s is not a valid route-map name\n", | |
12413 | rmap_str); | |
12414 | return CMD_WARNING; | |
12415 | } | |
12416 | ||
12417 | sh_type = bgp_show_type_route_map; | |
12418 | output_arg = rmap; | |
12419 | } | |
12420 | ||
12421 | if (argv_find(argv, argc, "rpki", &idx)) { | |
12422 | sh_type = bgp_show_type_rpki; | |
12423 | if (argv_find(argv, argc, "valid", &idx)) | |
12424 | rpki_target_state = RPKI_VALID; | |
12425 | else if (argv_find(argv, argc, "invalid", &idx)) | |
12426 | rpki_target_state = RPKI_INVALID; | |
12427 | } | |
12428 | ||
12429 | /* Display prefixes with matching version numbers */ | |
12430 | if (argv_find(argv, argc, "version", &idx)) { | |
12431 | sh_type = bgp_show_type_prefix_version; | |
12432 | output_arg = argv[idx + 1]->arg; | |
12433 | } | |
12434 | ||
12435 | /* Display prefixes with matching BGP community alias */ | |
12436 | if (argv_find(argv, argc, "alias", &idx)) { | |
12437 | sh_type = bgp_show_type_community_alias; | |
12438 | output_arg = argv[idx + 1]->arg; | |
12439 | } | |
12440 | ||
12441 | /* prefix-longer */ | |
12442 | if (argv_find(argv, argc, "A.B.C.D/M", &idx) | |
12443 | || argv_find(argv, argc, "X:X::X:X/M", &idx)) { | |
12444 | const char *prefix_str = argv[idx]->arg; | |
12445 | ||
12446 | if (!str2prefix(prefix_str, &p)) { | |
12447 | vty_out(vty, "%% Malformed Prefix\n"); | |
12448 | return CMD_WARNING; | |
12449 | } | |
12450 | ||
12451 | sh_type = bgp_show_type_prefix_longer; | |
12452 | output_arg = &p; | |
12453 | } | |
12454 | ||
12455 | if (!all) { | |
12456 | /* show bgp: AFI_IP6, show ip bgp: AFI_IP */ | |
12457 | if (community) | |
12458 | return bgp_show_community(vty, bgp, community, | |
12459 | exact_match, afi, safi, | |
12460 | show_flags); | |
12461 | else | |
12462 | return bgp_show(vty, bgp, afi, safi, sh_type, | |
12463 | output_arg, show_flags, | |
12464 | rpki_target_state); | |
12465 | } else { | |
12466 | struct listnode *node; | |
12467 | struct bgp *abgp; | |
12468 | /* show <ip> bgp ipv4 all: AFI_IP, show <ip> bgp ipv6 all: | |
12469 | * AFI_IP6 */ | |
12470 | ||
12471 | if (uj) | |
12472 | vty_out(vty, "{\n"); | |
12473 | ||
12474 | if (CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP) | |
12475 | || CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP6)) { | |
12476 | afi = CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP) | |
12477 | ? AFI_IP | |
12478 | : AFI_IP6; | |
12479 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, abgp)) { | |
12480 | FOREACH_SAFI (safi) { | |
12481 | if (!bgp_afi_safi_peer_exists(abgp, afi, | |
12482 | safi)) | |
12483 | continue; | |
12484 | ||
12485 | if (uj) { | |
12486 | if (first) | |
12487 | first = false; | |
12488 | else | |
12489 | vty_out(vty, ",\n"); | |
12490 | vty_out(vty, "\"%s\":{\n", | |
12491 | get_afi_safi_str(afi, | |
12492 | safi, | |
12493 | true)); | |
12494 | } else | |
12495 | vty_out(vty, | |
12496 | "\nFor address family: %s\n", | |
12497 | get_afi_safi_str( | |
12498 | afi, safi, | |
12499 | false)); | |
12500 | ||
12501 | if (community) | |
12502 | bgp_show_community( | |
12503 | vty, abgp, community, | |
12504 | exact_match, afi, safi, | |
12505 | show_flags); | |
12506 | else | |
12507 | bgp_show(vty, abgp, afi, safi, | |
12508 | sh_type, output_arg, | |
12509 | show_flags, | |
12510 | rpki_target_state); | |
12511 | if (uj) | |
12512 | vty_out(vty, "}\n"); | |
12513 | } | |
12514 | } | |
12515 | } else { | |
12516 | /* show <ip> bgp all: for each AFI and SAFI*/ | |
12517 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, abgp)) { | |
12518 | FOREACH_AFI_SAFI (afi, safi) { | |
12519 | if (!bgp_afi_safi_peer_exists(abgp, afi, | |
12520 | safi)) | |
12521 | continue; | |
12522 | ||
12523 | if (uj) { | |
12524 | if (first) | |
12525 | first = false; | |
12526 | else | |
12527 | vty_out(vty, ",\n"); | |
12528 | ||
12529 | vty_out(vty, "\"%s\":{\n", | |
12530 | get_afi_safi_str(afi, | |
12531 | safi, | |
12532 | true)); | |
12533 | } else | |
12534 | vty_out(vty, | |
12535 | "\nFor address family: %s\n", | |
12536 | get_afi_safi_str( | |
12537 | afi, safi, | |
12538 | false)); | |
12539 | ||
12540 | if (community) | |
12541 | bgp_show_community( | |
12542 | vty, abgp, community, | |
12543 | exact_match, afi, safi, | |
12544 | show_flags); | |
12545 | else | |
12546 | bgp_show(vty, abgp, afi, safi, | |
12547 | sh_type, output_arg, | |
12548 | show_flags, | |
12549 | rpki_target_state); | |
12550 | if (uj) | |
12551 | vty_out(vty, "}\n"); | |
12552 | } | |
12553 | } | |
12554 | } | |
12555 | if (uj) | |
12556 | vty_out(vty, "}\n"); | |
12557 | } | |
12558 | return CMD_SUCCESS; | |
12559 | } | |
12560 | ||
12561 | DEFUN (show_ip_bgp_route, | |
12562 | show_ip_bgp_route_cmd, | |
12563 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]]<A.B.C.D|A.B.C.D/M|X:X::X:X|X:X::X:X/M> [<bestpath|multipath>] [rpki <valid|invalid|notfound>] [json]", | |
12564 | SHOW_STR | |
12565 | IP_STR | |
12566 | BGP_STR | |
12567 | BGP_INSTANCE_HELP_STR | |
12568 | BGP_AFI_HELP_STR | |
12569 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12570 | "Network in the BGP routing table to display\n" | |
12571 | "IPv4 prefix\n" | |
12572 | "Network in the BGP routing table to display\n" | |
12573 | "IPv6 prefix\n" | |
12574 | "Display only the bestpath\n" | |
12575 | "Display only multipaths\n" | |
12576 | "Display only paths that match the specified rpki state\n" | |
12577 | "A valid path as determined by rpki\n" | |
12578 | "A invalid path as determined by rpki\n" | |
12579 | "A path that has no rpki data\n" | |
12580 | JSON_STR) | |
12581 | { | |
12582 | int prefix_check = 0; | |
12583 | ||
12584 | afi_t afi = AFI_IP6; | |
12585 | safi_t safi = SAFI_UNICAST; | |
12586 | char *prefix = NULL; | |
12587 | struct bgp *bgp = NULL; | |
12588 | enum bgp_path_type path_type; | |
12589 | bool uj = use_json(argc, argv); | |
12590 | ||
12591 | int idx = 0; | |
12592 | ||
12593 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12594 | &bgp, uj); | |
12595 | if (!idx) | |
12596 | return CMD_WARNING; | |
12597 | ||
12598 | if (!bgp) { | |
12599 | vty_out(vty, | |
12600 | "Specified 'all' vrf's but this command currently only works per view/vrf\n"); | |
12601 | return CMD_WARNING; | |
12602 | } | |
12603 | ||
12604 | /* <A.B.C.D|A.B.C.D/M|X:X::X:X|X:X::X:X/M> */ | |
12605 | if (argv_find(argv, argc, "A.B.C.D", &idx) | |
12606 | || argv_find(argv, argc, "X:X::X:X", &idx)) | |
12607 | prefix_check = 0; | |
12608 | else if (argv_find(argv, argc, "A.B.C.D/M", &idx) | |
12609 | || argv_find(argv, argc, "X:X::X:X/M", &idx)) | |
12610 | prefix_check = 1; | |
12611 | ||
12612 | if ((argv[idx]->type == IPV6_TKN || argv[idx]->type == IPV6_PREFIX_TKN) | |
12613 | && afi != AFI_IP6) { | |
12614 | vty_out(vty, | |
12615 | "%% Cannot specify IPv6 address or prefix with IPv4 AFI\n"); | |
12616 | return CMD_WARNING; | |
12617 | } | |
12618 | if ((argv[idx]->type == IPV4_TKN || argv[idx]->type == IPV4_PREFIX_TKN) | |
12619 | && afi != AFI_IP) { | |
12620 | vty_out(vty, | |
12621 | "%% Cannot specify IPv4 address or prefix with IPv6 AFI\n"); | |
12622 | return CMD_WARNING; | |
12623 | } | |
12624 | ||
12625 | prefix = argv[idx]->arg; | |
12626 | ||
12627 | /* [<bestpath|multipath>] */ | |
12628 | if (argv_find(argv, argc, "bestpath", &idx)) | |
12629 | path_type = BGP_PATH_SHOW_BESTPATH; | |
12630 | else if (argv_find(argv, argc, "multipath", &idx)) | |
12631 | path_type = BGP_PATH_SHOW_MULTIPATH; | |
12632 | else | |
12633 | path_type = BGP_PATH_SHOW_ALL; | |
12634 | ||
12635 | return bgp_show_route(vty, bgp, prefix, afi, safi, NULL, prefix_check, | |
12636 | path_type, RPKI_NOT_BEING_USED, uj); | |
12637 | } | |
12638 | ||
12639 | DEFUN (show_ip_bgp_regexp, | |
12640 | show_ip_bgp_regexp_cmd, | |
12641 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] regexp REGEX [json]", | |
12642 | SHOW_STR | |
12643 | IP_STR | |
12644 | BGP_STR | |
12645 | BGP_INSTANCE_HELP_STR | |
12646 | BGP_AFI_HELP_STR | |
12647 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12648 | "Display routes matching the AS path regular expression\n" | |
12649 | "A regular-expression (1234567890_^|[,{}() ]$*+.?-\\) to match the BGP AS paths\n" | |
12650 | JSON_STR) | |
12651 | { | |
12652 | afi_t afi = AFI_IP6; | |
12653 | safi_t safi = SAFI_UNICAST; | |
12654 | struct bgp *bgp = NULL; | |
12655 | bool uj = use_json(argc, argv); | |
12656 | char *regstr = NULL; | |
12657 | ||
12658 | int idx = 0; | |
12659 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12660 | &bgp, false); | |
12661 | if (!idx) | |
12662 | return CMD_WARNING; | |
12663 | ||
12664 | // get index of regex | |
12665 | if (argv_find(argv, argc, "REGEX", &idx)) | |
12666 | regstr = argv[idx]->arg; | |
12667 | ||
12668 | assert(regstr); | |
12669 | return bgp_show_regexp(vty, bgp, (const char *)regstr, afi, safi, | |
12670 | bgp_show_type_regexp, uj); | |
12671 | } | |
12672 | ||
12673 | DEFPY (show_ip_bgp_instance_all, | |
12674 | show_ip_bgp_instance_all_cmd, | |
12675 | "show [ip] bgp <view|vrf> all ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] [json$uj | wide$wide]", | |
12676 | SHOW_STR | |
12677 | IP_STR | |
12678 | BGP_STR | |
12679 | BGP_INSTANCE_ALL_HELP_STR | |
12680 | BGP_AFI_HELP_STR | |
12681 | BGP_SAFI_WITH_LABEL_HELP_STR | |
12682 | JSON_STR | |
12683 | "Increase table width for longer prefixes\n") | |
12684 | { | |
12685 | afi_t afi = AFI_IP6; | |
12686 | safi_t safi = SAFI_UNICAST; | |
12687 | struct bgp *bgp = NULL; | |
12688 | int idx = 0; | |
12689 | uint16_t show_flags = 0; | |
12690 | ||
12691 | if (uj) { | |
12692 | argc--; | |
12693 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
12694 | } | |
12695 | ||
12696 | if (wide) | |
12697 | SET_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
12698 | ||
12699 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
12700 | &bgp, uj); | |
12701 | if (!idx) | |
12702 | return CMD_WARNING; | |
12703 | ||
12704 | bgp_show_all_instances_routes_vty(vty, afi, safi, show_flags); | |
12705 | return CMD_SUCCESS; | |
12706 | } | |
12707 | ||
12708 | static int bgp_show_regexp(struct vty *vty, struct bgp *bgp, const char *regstr, | |
12709 | afi_t afi, safi_t safi, enum bgp_show_type type, | |
12710 | bool use_json) | |
12711 | { | |
12712 | regex_t *regex; | |
12713 | int rc; | |
12714 | uint16_t show_flags = 0; | |
12715 | ||
12716 | if (use_json) | |
12717 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
12718 | ||
12719 | if (!config_bgp_aspath_validate(regstr)) { | |
12720 | vty_out(vty, "Invalid character in REGEX %s\n", | |
12721 | regstr); | |
12722 | return CMD_WARNING_CONFIG_FAILED; | |
12723 | } | |
12724 | ||
12725 | regex = bgp_regcomp(regstr); | |
12726 | if (!regex) { | |
12727 | vty_out(vty, "Can't compile regexp %s\n", regstr); | |
12728 | return CMD_WARNING; | |
12729 | } | |
12730 | ||
12731 | rc = bgp_show(vty, bgp, afi, safi, type, regex, show_flags, | |
12732 | RPKI_NOT_BEING_USED); | |
12733 | bgp_regex_free(regex); | |
12734 | return rc; | |
12735 | } | |
12736 | ||
12737 | static int bgp_show_community(struct vty *vty, struct bgp *bgp, | |
12738 | const char *comstr, int exact, afi_t afi, | |
12739 | safi_t safi, uint16_t show_flags) | |
12740 | { | |
12741 | struct community *com; | |
12742 | int ret = 0; | |
12743 | ||
12744 | com = community_str2com(comstr); | |
12745 | if (!com) { | |
12746 | vty_out(vty, "%% Community malformed: %s\n", comstr); | |
12747 | return CMD_WARNING; | |
12748 | } | |
12749 | ||
12750 | ret = bgp_show(vty, bgp, afi, safi, | |
12751 | (exact ? bgp_show_type_community_exact | |
12752 | : bgp_show_type_community), | |
12753 | com, show_flags, RPKI_NOT_BEING_USED); | |
12754 | community_free(&com); | |
12755 | ||
12756 | return ret; | |
12757 | } | |
12758 | ||
12759 | enum bgp_stats { | |
12760 | BGP_STATS_MAXBITLEN = 0, | |
12761 | BGP_STATS_RIB, | |
12762 | BGP_STATS_PREFIXES, | |
12763 | BGP_STATS_TOTPLEN, | |
12764 | BGP_STATS_UNAGGREGATEABLE, | |
12765 | BGP_STATS_MAX_AGGREGATEABLE, | |
12766 | BGP_STATS_AGGREGATES, | |
12767 | BGP_STATS_SPACE, | |
12768 | BGP_STATS_ASPATH_COUNT, | |
12769 | BGP_STATS_ASPATH_MAXHOPS, | |
12770 | BGP_STATS_ASPATH_TOTHOPS, | |
12771 | BGP_STATS_ASPATH_MAXSIZE, | |
12772 | BGP_STATS_ASPATH_TOTSIZE, | |
12773 | BGP_STATS_ASN_HIGHEST, | |
12774 | BGP_STATS_MAX, | |
12775 | }; | |
12776 | ||
12777 | #define TABLE_STATS_IDX_VTY 0 | |
12778 | #define TABLE_STATS_IDX_JSON 1 | |
12779 | ||
12780 | static const char *table_stats_strs[][2] = { | |
12781 | [BGP_STATS_PREFIXES] = {"Total Prefixes", "totalPrefixes"}, | |
12782 | [BGP_STATS_TOTPLEN] = {"Average prefix length", "averagePrefixLength"}, | |
12783 | [BGP_STATS_RIB] = {"Total Advertisements", "totalAdvertisements"}, | |
12784 | [BGP_STATS_UNAGGREGATEABLE] = {"Unaggregateable prefixes", | |
12785 | "unaggregateablePrefixes"}, | |
12786 | [BGP_STATS_MAX_AGGREGATEABLE] = {"Maximum aggregateable prefixes", | |
12787 | "maximumAggregateablePrefixes"}, | |
12788 | [BGP_STATS_AGGREGATES] = {"BGP Aggregate advertisements", | |
12789 | "bgpAggregateAdvertisements"}, | |
12790 | [BGP_STATS_SPACE] = {"Address space advertised", | |
12791 | "addressSpaceAdvertised"}, | |
12792 | [BGP_STATS_ASPATH_COUNT] = {"Advertisements with paths", | |
12793 | "advertisementsWithPaths"}, | |
12794 | [BGP_STATS_ASPATH_MAXHOPS] = {"Longest AS-Path (hops)", | |
12795 | "longestAsPath"}, | |
12796 | [BGP_STATS_ASPATH_MAXSIZE] = {"Largest AS-Path (bytes)", | |
12797 | "largestAsPath"}, | |
12798 | [BGP_STATS_ASPATH_TOTHOPS] = {"Average AS-Path length (hops)", | |
12799 | "averageAsPathLengthHops"}, | |
12800 | [BGP_STATS_ASPATH_TOTSIZE] = {"Average AS-Path size (bytes)", | |
12801 | "averageAsPathSizeBytes"}, | |
12802 | [BGP_STATS_ASN_HIGHEST] = {"Highest public ASN", "highestPublicAsn"}, | |
12803 | [BGP_STATS_MAX] = {NULL, NULL} | |
12804 | }; | |
12805 | ||
12806 | struct bgp_table_stats { | |
12807 | struct bgp_table *table; | |
12808 | unsigned long long counts[BGP_STATS_MAX]; | |
12809 | double total_space; | |
12810 | }; | |
12811 | ||
12812 | static void bgp_table_stats_rn(struct bgp_dest *dest, struct bgp_dest *top, | |
12813 | struct bgp_table_stats *ts, unsigned int space) | |
12814 | { | |
12815 | struct bgp_dest *pdest = bgp_dest_parent_nolock(dest); | |
12816 | struct bgp_path_info *pi; | |
12817 | const struct prefix *rn_p; | |
12818 | ||
12819 | if (!bgp_dest_has_bgp_path_info_data(dest)) | |
12820 | return; | |
12821 | ||
12822 | rn_p = bgp_dest_get_prefix(dest); | |
12823 | ts->counts[BGP_STATS_PREFIXES]++; | |
12824 | ts->counts[BGP_STATS_TOTPLEN] += rn_p->prefixlen; | |
12825 | ||
12826 | /* check if the prefix is included by any other announcements */ | |
12827 | while (pdest && !bgp_dest_has_bgp_path_info_data(pdest)) | |
12828 | pdest = bgp_dest_parent_nolock(pdest); | |
12829 | ||
12830 | if (pdest == NULL || pdest == top) { | |
12831 | ts->counts[BGP_STATS_UNAGGREGATEABLE]++; | |
12832 | /* announced address space */ | |
12833 | if (space) | |
12834 | ts->total_space += pow(2.0, space - rn_p->prefixlen); | |
12835 | } else if (bgp_dest_has_bgp_path_info_data(pdest)) | |
12836 | ts->counts[BGP_STATS_MAX_AGGREGATEABLE]++; | |
12837 | ||
12838 | ||
12839 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { | |
12840 | ts->counts[BGP_STATS_RIB]++; | |
12841 | ||
12842 | if (CHECK_FLAG(pi->attr->flag, | |
12843 | ATTR_FLAG_BIT(BGP_ATTR_ATOMIC_AGGREGATE))) | |
12844 | ts->counts[BGP_STATS_AGGREGATES]++; | |
12845 | ||
12846 | /* as-path stats */ | |
12847 | if (pi->attr->aspath) { | |
12848 | unsigned int hops = aspath_count_hops(pi->attr->aspath); | |
12849 | unsigned int size = aspath_size(pi->attr->aspath); | |
12850 | as_t highest = aspath_highest(pi->attr->aspath); | |
12851 | ||
12852 | ts->counts[BGP_STATS_ASPATH_COUNT]++; | |
12853 | ||
12854 | if (hops > ts->counts[BGP_STATS_ASPATH_MAXHOPS]) | |
12855 | ts->counts[BGP_STATS_ASPATH_MAXHOPS] = hops; | |
12856 | ||
12857 | if (size > ts->counts[BGP_STATS_ASPATH_MAXSIZE]) | |
12858 | ts->counts[BGP_STATS_ASPATH_MAXSIZE] = size; | |
12859 | ||
12860 | ts->counts[BGP_STATS_ASPATH_TOTHOPS] += hops; | |
12861 | ts->counts[BGP_STATS_ASPATH_TOTSIZE] += size; | |
12862 | if (highest > ts->counts[BGP_STATS_ASN_HIGHEST]) | |
12863 | ts->counts[BGP_STATS_ASN_HIGHEST] = highest; | |
12864 | } | |
12865 | } | |
12866 | } | |
12867 | ||
12868 | static void bgp_table_stats_walker(struct thread *t) | |
12869 | { | |
12870 | struct bgp_dest *dest, *ndest; | |
12871 | struct bgp_dest *top; | |
12872 | struct bgp_table_stats *ts = THREAD_ARG(t); | |
12873 | unsigned int space = 0; | |
12874 | ||
12875 | if (!(top = bgp_table_top(ts->table))) | |
12876 | return; | |
12877 | ||
12878 | switch (ts->table->afi) { | |
12879 | case AFI_IP: | |
12880 | space = IPV4_MAX_BITLEN; | |
12881 | break; | |
12882 | case AFI_IP6: | |
12883 | space = IPV6_MAX_BITLEN; | |
12884 | break; | |
12885 | case AFI_L2VPN: | |
12886 | space = EVPN_ROUTE_PREFIXLEN; | |
12887 | break; | |
12888 | default: | |
12889 | return; | |
12890 | } | |
12891 | ||
12892 | ts->counts[BGP_STATS_MAXBITLEN] = space; | |
12893 | ||
12894 | for (dest = top; dest; dest = bgp_route_next(dest)) { | |
12895 | if (ts->table->safi == SAFI_MPLS_VPN | |
12896 | || ts->table->safi == SAFI_ENCAP | |
12897 | || ts->table->safi == SAFI_EVPN) { | |
12898 | struct bgp_table *table; | |
12899 | ||
12900 | table = bgp_dest_get_bgp_table_info(dest); | |
12901 | if (!table) | |
12902 | continue; | |
12903 | ||
12904 | top = bgp_table_top(table); | |
12905 | for (ndest = bgp_table_top(table); ndest; | |
12906 | ndest = bgp_route_next(ndest)) | |
12907 | bgp_table_stats_rn(ndest, top, ts, space); | |
12908 | } else { | |
12909 | bgp_table_stats_rn(dest, top, ts, space); | |
12910 | } | |
12911 | } | |
12912 | } | |
12913 | ||
12914 | static void bgp_table_stats_all(struct vty *vty, afi_t afi, safi_t safi, | |
12915 | struct json_object *json_array) | |
12916 | { | |
12917 | struct listnode *node, *nnode; | |
12918 | struct bgp *bgp; | |
12919 | ||
12920 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) | |
12921 | bgp_table_stats_single(vty, bgp, afi, safi, json_array); | |
12922 | } | |
12923 | ||
12924 | static int bgp_table_stats_single(struct vty *vty, struct bgp *bgp, afi_t afi, | |
12925 | safi_t safi, struct json_object *json_array) | |
12926 | { | |
12927 | struct bgp_table_stats ts; | |
12928 | unsigned int i; | |
12929 | int ret = CMD_SUCCESS; | |
12930 | char temp_buf[20]; | |
12931 | struct json_object *json = NULL; | |
12932 | ||
12933 | if (json_array) | |
12934 | json = json_object_new_object(); | |
12935 | ||
12936 | if (!bgp->rib[afi][safi]) { | |
12937 | char warning_msg[50]; | |
12938 | ||
12939 | snprintf(warning_msg, sizeof(warning_msg), | |
12940 | "%% No RIB exist's for the AFI(%d)/SAFI(%d)", afi, | |
12941 | safi); | |
12942 | ||
12943 | if (!json) | |
12944 | vty_out(vty, "%s\n", warning_msg); | |
12945 | else | |
12946 | json_object_string_add(json, "warning", warning_msg); | |
12947 | ||
12948 | ret = CMD_WARNING; | |
12949 | goto end_table_stats; | |
12950 | } | |
12951 | ||
12952 | if (!json) | |
12953 | vty_out(vty, "BGP %s RIB statistics (%s)\n", | |
12954 | get_afi_safi_str(afi, safi, false), bgp->name_pretty); | |
12955 | else | |
12956 | json_object_string_add(json, "instance", bgp->name_pretty); | |
12957 | ||
12958 | /* labeled-unicast routes live in the unicast table */ | |
12959 | if (safi == SAFI_LABELED_UNICAST) | |
12960 | safi = SAFI_UNICAST; | |
12961 | ||
12962 | memset(&ts, 0, sizeof(ts)); | |
12963 | ts.table = bgp->rib[afi][safi]; | |
12964 | thread_execute(bm->master, bgp_table_stats_walker, &ts, 0); | |
12965 | ||
12966 | for (i = 0; i < BGP_STATS_MAX; i++) { | |
12967 | if ((!json && !table_stats_strs[i][TABLE_STATS_IDX_VTY]) | |
12968 | || (json && !table_stats_strs[i][TABLE_STATS_IDX_JSON])) | |
12969 | continue; | |
12970 | ||
12971 | switch (i) { | |
12972 | case BGP_STATS_ASPATH_TOTHOPS: | |
12973 | case BGP_STATS_ASPATH_TOTSIZE: | |
12974 | if (!json) { | |
12975 | snprintf( | |
12976 | temp_buf, sizeof(temp_buf), "%12.2f", | |
12977 | ts.counts[i] | |
12978 | ? (float)ts.counts[i] | |
12979 | / (float)ts.counts | |
12980 | [BGP_STATS_ASPATH_COUNT] | |
12981 | : 0); | |
12982 | vty_out(vty, "%-30s: %s", | |
12983 | table_stats_strs[i] | |
12984 | [TABLE_STATS_IDX_VTY], | |
12985 | temp_buf); | |
12986 | } else { | |
12987 | json_object_double_add( | |
12988 | json, | |
12989 | table_stats_strs[i] | |
12990 | [TABLE_STATS_IDX_JSON], | |
12991 | ts.counts[i] | |
12992 | ? (double)ts.counts[i] | |
12993 | / (double)ts.counts | |
12994 | [BGP_STATS_ASPATH_COUNT] | |
12995 | : 0); | |
12996 | } | |
12997 | break; | |
12998 | case BGP_STATS_TOTPLEN: | |
12999 | if (!json) { | |
13000 | snprintf( | |
13001 | temp_buf, sizeof(temp_buf), "%12.2f", | |
13002 | ts.counts[i] | |
13003 | ? (float)ts.counts[i] | |
13004 | / (float)ts.counts | |
13005 | [BGP_STATS_PREFIXES] | |
13006 | : 0); | |
13007 | vty_out(vty, "%-30s: %s", | |
13008 | table_stats_strs[i] | |
13009 | [TABLE_STATS_IDX_VTY], | |
13010 | temp_buf); | |
13011 | } else { | |
13012 | json_object_double_add( | |
13013 | json, | |
13014 | table_stats_strs[i] | |
13015 | [TABLE_STATS_IDX_JSON], | |
13016 | ts.counts[i] | |
13017 | ? (double)ts.counts[i] | |
13018 | / (double)ts.counts | |
13019 | [BGP_STATS_PREFIXES] | |
13020 | : 0); | |
13021 | } | |
13022 | break; | |
13023 | case BGP_STATS_SPACE: | |
13024 | if (!json) { | |
13025 | snprintf(temp_buf, sizeof(temp_buf), "%12g", | |
13026 | ts.total_space); | |
13027 | vty_out(vty, "%-30s: %s\n", | |
13028 | table_stats_strs[i] | |
13029 | [TABLE_STATS_IDX_VTY], | |
13030 | temp_buf); | |
13031 | } else { | |
13032 | json_object_double_add( | |
13033 | json, | |
13034 | table_stats_strs[i] | |
13035 | [TABLE_STATS_IDX_JSON], | |
13036 | (double)ts.total_space); | |
13037 | } | |
13038 | if (afi == AFI_IP6) { | |
13039 | if (!json) { | |
13040 | snprintf(temp_buf, sizeof(temp_buf), | |
13041 | "%12g", | |
13042 | ts.total_space | |
13043 | * pow(2.0, -128 + 32)); | |
13044 | vty_out(vty, "%30s: %s\n", | |
13045 | "/32 equivalent %s\n", | |
13046 | temp_buf); | |
13047 | } else { | |
13048 | json_object_double_add( | |
13049 | json, "/32equivalent", | |
13050 | (double)(ts.total_space | |
13051 | * pow(2.0, | |
13052 | -128 + 32))); | |
13053 | } | |
13054 | if (!json) { | |
13055 | snprintf(temp_buf, sizeof(temp_buf), | |
13056 | "%12g", | |
13057 | ts.total_space | |
13058 | * pow(2.0, -128 + 48)); | |
13059 | vty_out(vty, "%30s: %s\n", | |
13060 | "/48 equivalent %s\n", | |
13061 | temp_buf); | |
13062 | } else { | |
13063 | json_object_double_add( | |
13064 | json, "/48equivalent", | |
13065 | (double)(ts.total_space | |
13066 | * pow(2.0, | |
13067 | -128 + 48))); | |
13068 | } | |
13069 | } else { | |
13070 | if (!json) { | |
13071 | snprintf(temp_buf, sizeof(temp_buf), | |
13072 | "%12.2f", | |
13073 | ts.total_space * 100. | |
13074 | * pow(2.0, -32)); | |
13075 | vty_out(vty, "%30s: %s\n", | |
13076 | "% announced ", temp_buf); | |
13077 | } else { | |
13078 | json_object_double_add( | |
13079 | json, "%announced", | |
13080 | (double)(ts.total_space * 100. | |
13081 | * pow(2.0, -32))); | |
13082 | } | |
13083 | if (!json) { | |
13084 | snprintf(temp_buf, sizeof(temp_buf), | |
13085 | "%12.2f", | |
13086 | ts.total_space | |
13087 | * pow(2.0, -32 + 8)); | |
13088 | vty_out(vty, "%30s: %s\n", | |
13089 | "/8 equivalent ", temp_buf); | |
13090 | } else { | |
13091 | json_object_double_add( | |
13092 | json, "/8equivalent", | |
13093 | (double)(ts.total_space | |
13094 | * pow(2.0, -32 + 8))); | |
13095 | } | |
13096 | if (!json) { | |
13097 | snprintf(temp_buf, sizeof(temp_buf), | |
13098 | "%12.2f", | |
13099 | ts.total_space | |
13100 | * pow(2.0, -32 + 24)); | |
13101 | vty_out(vty, "%30s: %s\n", | |
13102 | "/24 equivalent ", temp_buf); | |
13103 | } else { | |
13104 | json_object_double_add( | |
13105 | json, "/24equivalent", | |
13106 | (double)(ts.total_space | |
13107 | * pow(2.0, -32 + 24))); | |
13108 | } | |
13109 | } | |
13110 | break; | |
13111 | default: | |
13112 | if (!json) { | |
13113 | snprintf(temp_buf, sizeof(temp_buf), "%12llu", | |
13114 | ts.counts[i]); | |
13115 | vty_out(vty, "%-30s: %s", | |
13116 | table_stats_strs[i] | |
13117 | [TABLE_STATS_IDX_VTY], | |
13118 | temp_buf); | |
13119 | } else { | |
13120 | json_object_int_add( | |
13121 | json, | |
13122 | table_stats_strs[i] | |
13123 | [TABLE_STATS_IDX_JSON], | |
13124 | ts.counts[i]); | |
13125 | } | |
13126 | } | |
13127 | if (!json) | |
13128 | vty_out(vty, "\n"); | |
13129 | } | |
13130 | end_table_stats: | |
13131 | if (json) | |
13132 | json_object_array_add(json_array, json); | |
13133 | return ret; | |
13134 | } | |
13135 | ||
13136 | static int bgp_table_stats(struct vty *vty, struct bgp *bgp, afi_t afi, | |
13137 | safi_t safi, struct json_object *json_array) | |
13138 | { | |
13139 | if (!bgp) { | |
13140 | bgp_table_stats_all(vty, afi, safi, json_array); | |
13141 | return CMD_SUCCESS; | |
13142 | } | |
13143 | ||
13144 | return bgp_table_stats_single(vty, bgp, afi, safi, json_array); | |
13145 | } | |
13146 | ||
13147 | enum bgp_pcounts { | |
13148 | PCOUNT_ADJ_IN = 0, | |
13149 | PCOUNT_DAMPED, | |
13150 | PCOUNT_REMOVED, | |
13151 | PCOUNT_HISTORY, | |
13152 | PCOUNT_STALE, | |
13153 | PCOUNT_VALID, | |
13154 | PCOUNT_ALL, | |
13155 | PCOUNT_COUNTED, | |
13156 | PCOUNT_BPATH_SELECTED, | |
13157 | PCOUNT_PFCNT, /* the figure we display to users */ | |
13158 | PCOUNT_MAX, | |
13159 | }; | |
13160 | ||
13161 | static const char *const pcount_strs[] = { | |
13162 | [PCOUNT_ADJ_IN] = "Adj-in", | |
13163 | [PCOUNT_DAMPED] = "Damped", | |
13164 | [PCOUNT_REMOVED] = "Removed", | |
13165 | [PCOUNT_HISTORY] = "History", | |
13166 | [PCOUNT_STALE] = "Stale", | |
13167 | [PCOUNT_VALID] = "Valid", | |
13168 | [PCOUNT_ALL] = "All RIB", | |
13169 | [PCOUNT_COUNTED] = "PfxCt counted", | |
13170 | [PCOUNT_BPATH_SELECTED] = "PfxCt Best Selected", | |
13171 | [PCOUNT_PFCNT] = "Useable", | |
13172 | [PCOUNT_MAX] = NULL, | |
13173 | }; | |
13174 | ||
13175 | struct peer_pcounts { | |
13176 | unsigned int count[PCOUNT_MAX]; | |
13177 | const struct peer *peer; | |
13178 | const struct bgp_table *table; | |
13179 | safi_t safi; | |
13180 | }; | |
13181 | ||
13182 | static void bgp_peer_count_proc(struct bgp_dest *rn, struct peer_pcounts *pc) | |
13183 | { | |
13184 | const struct bgp_adj_in *ain; | |
13185 | const struct bgp_path_info *pi; | |
13186 | const struct peer *peer = pc->peer; | |
13187 | ||
13188 | for (ain = rn->adj_in; ain; ain = ain->next) | |
13189 | if (ain->peer == peer) | |
13190 | pc->count[PCOUNT_ADJ_IN]++; | |
13191 | ||
13192 | for (pi = bgp_dest_get_bgp_path_info(rn); pi; pi = pi->next) { | |
13193 | ||
13194 | if (pi->peer != peer) | |
13195 | continue; | |
13196 | ||
13197 | pc->count[PCOUNT_ALL]++; | |
13198 | ||
13199 | if (CHECK_FLAG(pi->flags, BGP_PATH_DAMPED)) | |
13200 | pc->count[PCOUNT_DAMPED]++; | |
13201 | if (CHECK_FLAG(pi->flags, BGP_PATH_HISTORY)) | |
13202 | pc->count[PCOUNT_HISTORY]++; | |
13203 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
13204 | pc->count[PCOUNT_REMOVED]++; | |
13205 | if (CHECK_FLAG(pi->flags, BGP_PATH_STALE)) | |
13206 | pc->count[PCOUNT_STALE]++; | |
13207 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
13208 | pc->count[PCOUNT_VALID]++; | |
13209 | if (!CHECK_FLAG(pi->flags, BGP_PATH_UNUSEABLE)) | |
13210 | pc->count[PCOUNT_PFCNT]++; | |
13211 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
13212 | pc->count[PCOUNT_BPATH_SELECTED]++; | |
13213 | ||
13214 | if (CHECK_FLAG(pi->flags, BGP_PATH_COUNTED)) { | |
13215 | pc->count[PCOUNT_COUNTED]++; | |
13216 | if (CHECK_FLAG(pi->flags, BGP_PATH_UNUSEABLE)) | |
13217 | flog_err( | |
13218 | EC_LIB_DEVELOPMENT, | |
13219 | "Attempting to count but flags say it is unusable"); | |
13220 | } else { | |
13221 | if (!CHECK_FLAG(pi->flags, BGP_PATH_UNUSEABLE)) | |
13222 | flog_err( | |
13223 | EC_LIB_DEVELOPMENT, | |
13224 | "Not counted but flags say we should"); | |
13225 | } | |
13226 | } | |
13227 | } | |
13228 | ||
13229 | static void bgp_peer_count_walker(struct thread *t) | |
13230 | { | |
13231 | struct bgp_dest *rn, *rm; | |
13232 | const struct bgp_table *table; | |
13233 | struct peer_pcounts *pc = THREAD_ARG(t); | |
13234 | ||
13235 | if (pc->safi == SAFI_MPLS_VPN || pc->safi == SAFI_ENCAP | |
13236 | || pc->safi == SAFI_EVPN) { | |
13237 | /* Special handling for 2-level routing tables. */ | |
13238 | for (rn = bgp_table_top(pc->table); rn; | |
13239 | rn = bgp_route_next(rn)) { | |
13240 | table = bgp_dest_get_bgp_table_info(rn); | |
13241 | if (table != NULL) | |
13242 | for (rm = bgp_table_top(table); rm; | |
13243 | rm = bgp_route_next(rm)) | |
13244 | bgp_peer_count_proc(rm, pc); | |
13245 | } | |
13246 | } else | |
13247 | for (rn = bgp_table_top(pc->table); rn; rn = bgp_route_next(rn)) | |
13248 | bgp_peer_count_proc(rn, pc); | |
13249 | } | |
13250 | ||
13251 | static int bgp_peer_counts(struct vty *vty, struct peer *peer, afi_t afi, | |
13252 | safi_t safi, bool use_json) | |
13253 | { | |
13254 | struct peer_pcounts pcounts = {.peer = peer}; | |
13255 | unsigned int i; | |
13256 | json_object *json = NULL; | |
13257 | json_object *json_loop = NULL; | |
13258 | ||
13259 | if (use_json) { | |
13260 | json = json_object_new_object(); | |
13261 | json_loop = json_object_new_object(); | |
13262 | } | |
13263 | ||
13264 | if (!peer || !peer->bgp || !peer->afc[afi][safi] | |
13265 | || !peer->bgp->rib[afi][safi]) { | |
13266 | if (use_json) { | |
13267 | json_object_string_add( | |
13268 | json, "warning", | |
13269 | "No such neighbor or address family"); | |
13270 | vty_out(vty, "%s\n", json_object_to_json_string(json)); | |
13271 | json_object_free(json); | |
13272 | json_object_free(json_loop); | |
13273 | } else | |
13274 | vty_out(vty, "%% No such neighbor or address family\n"); | |
13275 | ||
13276 | return CMD_WARNING; | |
13277 | } | |
13278 | ||
13279 | memset(&pcounts, 0, sizeof(pcounts)); | |
13280 | pcounts.peer = peer; | |
13281 | pcounts.table = peer->bgp->rib[afi][safi]; | |
13282 | pcounts.safi = safi; | |
13283 | ||
13284 | /* in-place call via thread subsystem so as to record execution time | |
13285 | * stats for the thread-walk (i.e. ensure this can't be blamed on | |
13286 | * on just vty_read()). | |
13287 | */ | |
13288 | thread_execute(bm->master, bgp_peer_count_walker, &pcounts, 0); | |
13289 | ||
13290 | if (use_json) { | |
13291 | json_object_string_add(json, "prefixCountsFor", peer->host); | |
13292 | json_object_string_add(json, "multiProtocol", | |
13293 | get_afi_safi_str(afi, safi, true)); | |
13294 | json_object_int_add(json, "pfxCounter", | |
13295 | peer->pcount[afi][safi]); | |
13296 | ||
13297 | for (i = 0; i < PCOUNT_MAX; i++) | |
13298 | json_object_int_add(json_loop, pcount_strs[i], | |
13299 | pcounts.count[i]); | |
13300 | ||
13301 | json_object_object_add(json, "ribTableWalkCounters", json_loop); | |
13302 | ||
13303 | if (pcounts.count[PCOUNT_PFCNT] != peer->pcount[afi][safi]) { | |
13304 | json_object_string_add(json, "pfxctDriftFor", | |
13305 | peer->host); | |
13306 | json_object_string_add( | |
13307 | json, "recommended", | |
13308 | "Please report this bug, with the above command output"); | |
13309 | } | |
13310 | vty_json(vty, json); | |
13311 | } else { | |
13312 | ||
13313 | if (peer->hostname | |
13314 | && CHECK_FLAG(peer->bgp->flags, BGP_FLAG_SHOW_HOSTNAME)) { | |
13315 | vty_out(vty, "Prefix counts for %s/%s, %s\n", | |
13316 | peer->hostname, peer->host, | |
13317 | get_afi_safi_str(afi, safi, false)); | |
13318 | } else { | |
13319 | vty_out(vty, "Prefix counts for %s, %s\n", peer->host, | |
13320 | get_afi_safi_str(afi, safi, false)); | |
13321 | } | |
13322 | ||
13323 | vty_out(vty, "PfxCt: %u\n", peer->pcount[afi][safi]); | |
13324 | vty_out(vty, "\nCounts from RIB table walk:\n\n"); | |
13325 | ||
13326 | for (i = 0; i < PCOUNT_MAX; i++) | |
13327 | vty_out(vty, "%20s: %-10d\n", pcount_strs[i], | |
13328 | pcounts.count[i]); | |
13329 | ||
13330 | if (pcounts.count[PCOUNT_PFCNT] != peer->pcount[afi][safi]) { | |
13331 | vty_out(vty, "%s [pcount] PfxCt drift!\n", peer->host); | |
13332 | vty_out(vty, | |
13333 | "Please report this bug, with the above command output\n"); | |
13334 | } | |
13335 | } | |
13336 | ||
13337 | return CMD_SUCCESS; | |
13338 | } | |
13339 | ||
13340 | DEFUN (show_ip_bgp_instance_neighbor_prefix_counts, | |
13341 | show_ip_bgp_instance_neighbor_prefix_counts_cmd, | |
13342 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_CMD_STR"]] neighbors <A.B.C.D|X:X::X:X|WORD> prefix-counts [json]", | |
13343 | SHOW_STR | |
13344 | IP_STR | |
13345 | BGP_STR | |
13346 | BGP_INSTANCE_HELP_STR | |
13347 | BGP_AFI_HELP_STR | |
13348 | BGP_SAFI_HELP_STR | |
13349 | "Detailed information on TCP and BGP neighbor connections\n" | |
13350 | "Neighbor to display information about\n" | |
13351 | "Neighbor to display information about\n" | |
13352 | "Neighbor on BGP configured interface\n" | |
13353 | "Display detailed prefix count information\n" | |
13354 | JSON_STR) | |
13355 | { | |
13356 | afi_t afi = AFI_IP6; | |
13357 | safi_t safi = SAFI_UNICAST; | |
13358 | struct peer *peer; | |
13359 | int idx = 0; | |
13360 | struct bgp *bgp = NULL; | |
13361 | bool uj = use_json(argc, argv); | |
13362 | ||
13363 | if (uj) | |
13364 | argc--; | |
13365 | ||
13366 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
13367 | &bgp, uj); | |
13368 | if (!idx) | |
13369 | return CMD_WARNING; | |
13370 | ||
13371 | argv_find(argv, argc, "neighbors", &idx); | |
13372 | peer = peer_lookup_in_view(vty, bgp, argv[idx + 1]->arg, uj); | |
13373 | if (!peer) | |
13374 | return CMD_WARNING; | |
13375 | ||
13376 | return bgp_peer_counts(vty, peer, afi, safi, uj); | |
13377 | } | |
13378 | ||
13379 | #ifdef KEEP_OLD_VPN_COMMANDS | |
13380 | DEFUN (show_ip_bgp_vpn_neighbor_prefix_counts, | |
13381 | show_ip_bgp_vpn_neighbor_prefix_counts_cmd, | |
13382 | "show [ip] bgp <vpnv4|vpnv6> all neighbors <A.B.C.D|X:X::X:X|WORD> prefix-counts [json]", | |
13383 | SHOW_STR | |
13384 | IP_STR | |
13385 | BGP_STR | |
13386 | BGP_VPNVX_HELP_STR | |
13387 | "Display information about all VPNv4 NLRIs\n" | |
13388 | "Detailed information on TCP and BGP neighbor connections\n" | |
13389 | "Neighbor to display information about\n" | |
13390 | "Neighbor to display information about\n" | |
13391 | "Neighbor on BGP configured interface\n" | |
13392 | "Display detailed prefix count information\n" | |
13393 | JSON_STR) | |
13394 | { | |
13395 | int idx_peer = 6; | |
13396 | struct peer *peer; | |
13397 | bool uj = use_json(argc, argv); | |
13398 | ||
13399 | peer = peer_lookup_in_view(vty, NULL, argv[idx_peer]->arg, uj); | |
13400 | if (!peer) | |
13401 | return CMD_WARNING; | |
13402 | ||
13403 | return bgp_peer_counts(vty, peer, AFI_IP, SAFI_MPLS_VPN, uj); | |
13404 | } | |
13405 | ||
13406 | DEFUN (show_ip_bgp_vpn_all_route_prefix, | |
13407 | show_ip_bgp_vpn_all_route_prefix_cmd, | |
13408 | "show [ip] bgp <vpnv4|vpnv6> all <A.B.C.D|A.B.C.D/M> [json]", | |
13409 | SHOW_STR | |
13410 | IP_STR | |
13411 | BGP_STR | |
13412 | BGP_VPNVX_HELP_STR | |
13413 | "Display information about all VPNv4 NLRIs\n" | |
13414 | "Network in the BGP routing table to display\n" | |
13415 | "Network in the BGP routing table to display\n" | |
13416 | JSON_STR) | |
13417 | { | |
13418 | int idx = 0; | |
13419 | char *network = NULL; | |
13420 | struct bgp *bgp = bgp_get_default(); | |
13421 | if (!bgp) { | |
13422 | vty_out(vty, "Can't find default instance\n"); | |
13423 | return CMD_WARNING; | |
13424 | } | |
13425 | ||
13426 | if (argv_find(argv, argc, "A.B.C.D", &idx)) | |
13427 | network = argv[idx]->arg; | |
13428 | else if (argv_find(argv, argc, "A.B.C.D/M", &idx)) | |
13429 | network = argv[idx]->arg; | |
13430 | else { | |
13431 | vty_out(vty, "Unable to figure out Network\n"); | |
13432 | return CMD_WARNING; | |
13433 | } | |
13434 | ||
13435 | return bgp_show_route(vty, bgp, network, AFI_IP, SAFI_MPLS_VPN, NULL, 0, | |
13436 | BGP_PATH_SHOW_ALL, RPKI_NOT_BEING_USED, | |
13437 | use_json(argc, argv)); | |
13438 | } | |
13439 | #endif /* KEEP_OLD_VPN_COMMANDS */ | |
13440 | ||
13441 | DEFUN (show_bgp_l2vpn_evpn_route_prefix, | |
13442 | show_bgp_l2vpn_evpn_route_prefix_cmd, | |
13443 | "show bgp l2vpn evpn <A.B.C.D|A.B.C.D/M|X:X::X:X|X:X::X:X/M> [json]", | |
13444 | SHOW_STR | |
13445 | BGP_STR | |
13446 | L2VPN_HELP_STR | |
13447 | EVPN_HELP_STR | |
13448 | "Network in the BGP routing table to display\n" | |
13449 | "Network in the BGP routing table to display\n" | |
13450 | "Network in the BGP routing table to display\n" | |
13451 | "Network in the BGP routing table to display\n" | |
13452 | JSON_STR) | |
13453 | { | |
13454 | int idx = 0; | |
13455 | char *network = NULL; | |
13456 | int prefix_check = 0; | |
13457 | ||
13458 | if (argv_find(argv, argc, "A.B.C.D", &idx) || | |
13459 | argv_find(argv, argc, "X:X::X:X", &idx)) | |
13460 | network = argv[idx]->arg; | |
13461 | else if (argv_find(argv, argc, "A.B.C.D/M", &idx) || | |
13462 | argv_find(argv, argc, "X:X::X:X/M", &idx)) { | |
13463 | network = argv[idx]->arg; | |
13464 | prefix_check = 1; | |
13465 | } else { | |
13466 | vty_out(vty, "Unable to figure out Network\n"); | |
13467 | return CMD_WARNING; | |
13468 | } | |
13469 | return bgp_show_route(vty, NULL, network, AFI_L2VPN, SAFI_EVPN, NULL, | |
13470 | prefix_check, BGP_PATH_SHOW_ALL, | |
13471 | RPKI_NOT_BEING_USED, use_json(argc, argv)); | |
13472 | } | |
13473 | ||
13474 | static void show_adj_route_header(struct vty *vty, struct bgp *bgp, | |
13475 | struct bgp_table *table, int *header1, | |
13476 | int *header2, json_object *json, | |
13477 | json_object *json_scode, | |
13478 | json_object *json_ocode, bool wide) | |
13479 | { | |
13480 | uint64_t version = table ? table->version : 0; | |
13481 | ||
13482 | if (*header1) { | |
13483 | if (json) { | |
13484 | json_object_int_add(json, "bgpTableVersion", version); | |
13485 | json_object_string_addf(json, "bgpLocalRouterId", | |
13486 | "%pI4", &bgp->router_id); | |
13487 | json_object_int_add(json, "defaultLocPrf", | |
13488 | bgp->default_local_pref); | |
13489 | json_object_int_add(json, "localAS", bgp->as); | |
13490 | json_object_object_add(json, "bgpStatusCodes", | |
13491 | json_scode); | |
13492 | json_object_object_add(json, "bgpOriginCodes", | |
13493 | json_ocode); | |
13494 | } else { | |
13495 | vty_out(vty, | |
13496 | "BGP table version is %" PRIu64 | |
13497 | ", local router ID is %pI4, vrf id ", | |
13498 | version, &bgp->router_id); | |
13499 | if (bgp->vrf_id == VRF_UNKNOWN) | |
13500 | vty_out(vty, "%s", VRFID_NONE_STR); | |
13501 | else | |
13502 | vty_out(vty, "%u", bgp->vrf_id); | |
13503 | vty_out(vty, "\n"); | |
13504 | vty_out(vty, "Default local pref %u, ", | |
13505 | bgp->default_local_pref); | |
13506 | vty_out(vty, "local AS %u\n", bgp->as); | |
13507 | vty_out(vty, BGP_SHOW_SCODE_HEADER); | |
13508 | vty_out(vty, BGP_SHOW_NCODE_HEADER); | |
13509 | vty_out(vty, BGP_SHOW_OCODE_HEADER); | |
13510 | vty_out(vty, BGP_SHOW_RPKI_HEADER); | |
13511 | } | |
13512 | *header1 = 0; | |
13513 | } | |
13514 | if (*header2) { | |
13515 | if (!json) | |
13516 | vty_out(vty, (wide ? BGP_SHOW_HEADER_WIDE | |
13517 | : BGP_SHOW_HEADER)); | |
13518 | *header2 = 0; | |
13519 | } | |
13520 | } | |
13521 | ||
13522 | static void | |
13523 | show_adj_route(struct vty *vty, struct peer *peer, struct bgp_table *table, | |
13524 | afi_t afi, safi_t safi, enum bgp_show_adj_route_type type, | |
13525 | const char *rmap_name, json_object *json, json_object *json_ar, | |
13526 | json_object *json_scode, json_object *json_ocode, | |
13527 | uint16_t show_flags, int *header1, int *header2, char *rd_str, | |
13528 | unsigned long *output_count, unsigned long *filtered_count) | |
13529 | { | |
13530 | struct bgp_adj_in *ain; | |
13531 | struct bgp_adj_out *adj; | |
13532 | struct bgp_dest *dest; | |
13533 | struct bgp *bgp; | |
13534 | struct attr attr; | |
13535 | int ret; | |
13536 | struct update_subgroup *subgrp; | |
13537 | struct peer_af *paf; | |
13538 | bool route_filtered; | |
13539 | bool use_json = CHECK_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
13540 | bool wide = CHECK_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
13541 | bool show_rd = ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
13542 | || (safi == SAFI_EVPN)) | |
13543 | ? true | |
13544 | : false; | |
13545 | ||
13546 | bgp = peer->bgp; | |
13547 | ||
13548 | subgrp = peer_subgroup(peer, afi, safi); | |
13549 | ||
13550 | if (type == bgp_show_adj_route_advertised && subgrp | |
13551 | && CHECK_FLAG(subgrp->sflags, SUBGRP_STATUS_DEFAULT_ORIGINATE)) { | |
13552 | if (use_json) { | |
13553 | json_object_int_add(json, "bgpTableVersion", | |
13554 | table->version); | |
13555 | json_object_string_addf(json, "bgpLocalRouterId", | |
13556 | "%pI4", &bgp->router_id); | |
13557 | json_object_int_add(json, "defaultLocPrf", | |
13558 | bgp->default_local_pref); | |
13559 | json_object_int_add(json, "localAS", bgp->as); | |
13560 | json_object_object_add(json, "bgpStatusCodes", | |
13561 | json_scode); | |
13562 | json_object_object_add(json, "bgpOriginCodes", | |
13563 | json_ocode); | |
13564 | json_object_string_add( | |
13565 | json, "bgpOriginatingDefaultNetwork", | |
13566 | (afi == AFI_IP) ? "0.0.0.0/0" : "::/0"); | |
13567 | } else { | |
13568 | vty_out(vty, | |
13569 | "BGP table version is %" PRIu64 | |
13570 | ", local router ID is %pI4, vrf id ", | |
13571 | table->version, &bgp->router_id); | |
13572 | if (bgp->vrf_id == VRF_UNKNOWN) | |
13573 | vty_out(vty, "%s", VRFID_NONE_STR); | |
13574 | else | |
13575 | vty_out(vty, "%u", bgp->vrf_id); | |
13576 | vty_out(vty, "\n"); | |
13577 | vty_out(vty, "Default local pref %u, ", | |
13578 | bgp->default_local_pref); | |
13579 | vty_out(vty, "local AS %u\n", bgp->as); | |
13580 | vty_out(vty, BGP_SHOW_SCODE_HEADER); | |
13581 | vty_out(vty, BGP_SHOW_NCODE_HEADER); | |
13582 | vty_out(vty, BGP_SHOW_OCODE_HEADER); | |
13583 | vty_out(vty, BGP_SHOW_RPKI_HEADER); | |
13584 | ||
13585 | vty_out(vty, "Originating default network %s\n\n", | |
13586 | (afi == AFI_IP) ? "0.0.0.0/0" : "::/0"); | |
13587 | } | |
13588 | *header1 = 0; | |
13589 | } | |
13590 | ||
13591 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { | |
13592 | if (type == bgp_show_adj_route_received | |
13593 | || type == bgp_show_adj_route_filtered) { | |
13594 | for (ain = dest->adj_in; ain; ain = ain->next) { | |
13595 | if (ain->peer != peer) | |
13596 | continue; | |
13597 | ||
13598 | show_adj_route_header(vty, bgp, table, header1, | |
13599 | header2, json, json_scode, | |
13600 | json_ocode, wide); | |
13601 | ||
13602 | if ((safi == SAFI_MPLS_VPN) | |
13603 | || (safi == SAFI_ENCAP) | |
13604 | || (safi == SAFI_EVPN)) { | |
13605 | if (use_json) | |
13606 | json_object_string_add( | |
13607 | json_ar, "rd", rd_str); | |
13608 | else if (show_rd && rd_str) { | |
13609 | vty_out(vty, | |
13610 | "Route Distinguisher: %s\n", | |
13611 | rd_str); | |
13612 | show_rd = false; | |
13613 | } | |
13614 | } | |
13615 | ||
13616 | attr = *ain->attr; | |
13617 | route_filtered = false; | |
13618 | ||
13619 | /* Filter prefix using distribute list, | |
13620 | * filter list or prefix list | |
13621 | */ | |
13622 | const struct prefix *rn_p = | |
13623 | bgp_dest_get_prefix(dest); | |
13624 | if ((bgp_input_filter(peer, rn_p, &attr, afi, | |
13625 | safi)) | |
13626 | == FILTER_DENY) | |
13627 | route_filtered = true; | |
13628 | ||
13629 | /* Filter prefix using route-map */ | |
13630 | ret = bgp_input_modifier(peer, rn_p, &attr, afi, | |
13631 | safi, rmap_name, NULL, | |
13632 | 0, NULL); | |
13633 | ||
13634 | if (type == bgp_show_adj_route_filtered && | |
13635 | !route_filtered && ret != RMAP_DENY) { | |
13636 | bgp_attr_flush(&attr); | |
13637 | continue; | |
13638 | } | |
13639 | ||
13640 | if (type == bgp_show_adj_route_received | |
13641 | && (route_filtered || ret == RMAP_DENY)) | |
13642 | (*filtered_count)++; | |
13643 | ||
13644 | route_vty_out_tmp(vty, dest, rn_p, &attr, safi, | |
13645 | use_json, json_ar, wide); | |
13646 | bgp_attr_flush(&attr); | |
13647 | (*output_count)++; | |
13648 | } | |
13649 | } else if (type == bgp_show_adj_route_advertised) { | |
13650 | RB_FOREACH (adj, bgp_adj_out_rb, &dest->adj_out) | |
13651 | SUBGRP_FOREACH_PEER (adj->subgroup, paf) { | |
13652 | if (paf->peer != peer || !adj->attr) | |
13653 | continue; | |
13654 | ||
13655 | show_adj_route_header(vty, bgp, table, | |
13656 | header1, header2, | |
13657 | json, json_scode, | |
13658 | json_ocode, wide); | |
13659 | ||
13660 | const struct prefix *rn_p = | |
13661 | bgp_dest_get_prefix(dest); | |
13662 | ||
13663 | attr = *adj->attr; | |
13664 | ret = bgp_output_modifier( | |
13665 | peer, rn_p, &attr, afi, safi, | |
13666 | rmap_name); | |
13667 | ||
13668 | if (ret != RMAP_DENY) { | |
13669 | if ((safi == SAFI_MPLS_VPN) | |
13670 | || (safi == SAFI_ENCAP) | |
13671 | || (safi == SAFI_EVPN)) { | |
13672 | if (use_json) | |
13673 | json_object_string_add( | |
13674 | json_ar, | |
13675 | "rd", | |
13676 | rd_str); | |
13677 | else if (show_rd | |
13678 | && rd_str) { | |
13679 | vty_out(vty, | |
13680 | "Route Distinguisher: %s\n", | |
13681 | rd_str); | |
13682 | show_rd = false; | |
13683 | } | |
13684 | } | |
13685 | route_vty_out_tmp( | |
13686 | vty, dest, rn_p, &attr, | |
13687 | safi, use_json, json_ar, | |
13688 | wide); | |
13689 | (*output_count)++; | |
13690 | } else { | |
13691 | (*filtered_count)++; | |
13692 | } | |
13693 | ||
13694 | bgp_attr_flush(&attr); | |
13695 | } | |
13696 | } else if (type == bgp_show_adj_route_bestpath) { | |
13697 | struct bgp_path_info *pi; | |
13698 | ||
13699 | show_adj_route_header(vty, bgp, table, header1, header2, | |
13700 | json, json_scode, json_ocode, | |
13701 | wide); | |
13702 | ||
13703 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; | |
13704 | pi = pi->next) { | |
13705 | if (pi->peer != peer) | |
13706 | continue; | |
13707 | ||
13708 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) | |
13709 | continue; | |
13710 | ||
13711 | route_vty_out_tmp(vty, dest, | |
13712 | bgp_dest_get_prefix(dest), | |
13713 | pi->attr, safi, use_json, | |
13714 | json_ar, wide); | |
13715 | (*output_count)++; | |
13716 | } | |
13717 | } | |
13718 | } | |
13719 | } | |
13720 | ||
13721 | static int peer_adj_routes(struct vty *vty, struct peer *peer, afi_t afi, | |
13722 | safi_t safi, enum bgp_show_adj_route_type type, | |
13723 | const char *rmap_name, uint16_t show_flags) | |
13724 | { | |
13725 | struct bgp *bgp; | |
13726 | struct bgp_table *table; | |
13727 | json_object *json = NULL; | |
13728 | json_object *json_scode = NULL; | |
13729 | json_object *json_ocode = NULL; | |
13730 | json_object *json_ar = NULL; | |
13731 | bool use_json = CHECK_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
13732 | ||
13733 | /* Init BGP headers here so they're only displayed once | |
13734 | * even if 'table' is 2-tier (MPLS_VPN, ENCAP, EVPN). | |
13735 | */ | |
13736 | int header1 = 1; | |
13737 | int header2 = 1; | |
13738 | ||
13739 | /* | |
13740 | * Initialize variables for each RD | |
13741 | * All prefixes under an RD is aggregated within "json_routes" | |
13742 | */ | |
13743 | char rd_str[BUFSIZ] = {0}; | |
13744 | json_object *json_routes = NULL; | |
13745 | ||
13746 | ||
13747 | /* For 2-tier tables, prefix counts need to be | |
13748 | * maintained across multiple runs of show_adj_route() | |
13749 | */ | |
13750 | unsigned long output_count_per_rd; | |
13751 | unsigned long filtered_count_per_rd; | |
13752 | unsigned long output_count = 0; | |
13753 | unsigned long filtered_count = 0; | |
13754 | ||
13755 | if (use_json) { | |
13756 | json = json_object_new_object(); | |
13757 | json_ar = json_object_new_object(); | |
13758 | json_scode = json_object_new_object(); | |
13759 | json_ocode = json_object_new_object(); | |
13760 | ||
13761 | json_object_string_add(json_scode, "suppressed", "s"); | |
13762 | json_object_string_add(json_scode, "damped", "d"); | |
13763 | json_object_string_add(json_scode, "history", "h"); | |
13764 | json_object_string_add(json_scode, "valid", "*"); | |
13765 | json_object_string_add(json_scode, "best", ">"); | |
13766 | json_object_string_add(json_scode, "multipath", "="); | |
13767 | json_object_string_add(json_scode, "internal", "i"); | |
13768 | json_object_string_add(json_scode, "ribFailure", "r"); | |
13769 | json_object_string_add(json_scode, "stale", "S"); | |
13770 | json_object_string_add(json_scode, "removed", "R"); | |
13771 | ||
13772 | json_object_string_add(json_ocode, "igp", "i"); | |
13773 | json_object_string_add(json_ocode, "egp", "e"); | |
13774 | json_object_string_add(json_ocode, "incomplete", "?"); | |
13775 | } | |
13776 | ||
13777 | if (!peer || !peer->afc[afi][safi]) { | |
13778 | if (use_json) { | |
13779 | json_object_string_add( | |
13780 | json, "warning", | |
13781 | "No such neighbor or address family"); | |
13782 | vty_out(vty, "%s\n", json_object_to_json_string(json)); | |
13783 | json_object_free(json); | |
13784 | json_object_free(json_ar); | |
13785 | json_object_free(json_scode); | |
13786 | json_object_free(json_ocode); | |
13787 | } else | |
13788 | vty_out(vty, "%% No such neighbor or address family\n"); | |
13789 | ||
13790 | return CMD_WARNING; | |
13791 | } | |
13792 | ||
13793 | if ((type == bgp_show_adj_route_received | |
13794 | || type == bgp_show_adj_route_filtered) | |
13795 | && !CHECK_FLAG(peer->af_flags[afi][safi], | |
13796 | PEER_FLAG_SOFT_RECONFIG)) { | |
13797 | if (use_json) { | |
13798 | json_object_string_add( | |
13799 | json, "warning", | |
13800 | "Inbound soft reconfiguration not enabled"); | |
13801 | vty_out(vty, "%s\n", json_object_to_json_string(json)); | |
13802 | json_object_free(json); | |
13803 | json_object_free(json_ar); | |
13804 | json_object_free(json_scode); | |
13805 | json_object_free(json_ocode); | |
13806 | } else | |
13807 | vty_out(vty, | |
13808 | "%% Inbound soft reconfiguration not enabled\n"); | |
13809 | ||
13810 | return CMD_WARNING; | |
13811 | } | |
13812 | ||
13813 | bgp = peer->bgp; | |
13814 | ||
13815 | /* labeled-unicast routes live in the unicast table */ | |
13816 | if (safi == SAFI_LABELED_UNICAST) | |
13817 | table = bgp->rib[afi][SAFI_UNICAST]; | |
13818 | else | |
13819 | table = bgp->rib[afi][safi]; | |
13820 | ||
13821 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
13822 | || (safi == SAFI_EVPN)) { | |
13823 | ||
13824 | struct bgp_dest *dest; | |
13825 | ||
13826 | for (dest = bgp_table_top(table); dest; | |
13827 | dest = bgp_route_next(dest)) { | |
13828 | table = bgp_dest_get_bgp_table_info(dest); | |
13829 | if (!table) | |
13830 | continue; | |
13831 | ||
13832 | output_count_per_rd = 0; | |
13833 | filtered_count_per_rd = 0; | |
13834 | ||
13835 | if (use_json) | |
13836 | json_routes = json_object_new_object(); | |
13837 | ||
13838 | const struct prefix_rd *prd; | |
13839 | prd = (const struct prefix_rd *)bgp_dest_get_prefix( | |
13840 | dest); | |
13841 | ||
13842 | prefix_rd2str(prd, rd_str, sizeof(rd_str)); | |
13843 | ||
13844 | show_adj_route(vty, peer, table, afi, safi, type, | |
13845 | rmap_name, json, json_routes, json_scode, | |
13846 | json_ocode, show_flags, &header1, | |
13847 | &header2, rd_str, &output_count_per_rd, | |
13848 | &filtered_count_per_rd); | |
13849 | ||
13850 | /* Don't include an empty RD in the output! */ | |
13851 | if (json_routes && (output_count_per_rd > 0)) | |
13852 | json_object_object_add(json_ar, rd_str, | |
13853 | json_routes); | |
13854 | ||
13855 | output_count += output_count_per_rd; | |
13856 | filtered_count += filtered_count_per_rd; | |
13857 | } | |
13858 | } else | |
13859 | show_adj_route(vty, peer, table, afi, safi, type, rmap_name, | |
13860 | json, json_ar, json_scode, json_ocode, | |
13861 | show_flags, &header1, &header2, rd_str, | |
13862 | &output_count, &filtered_count); | |
13863 | ||
13864 | if (use_json) { | |
13865 | if (type == bgp_show_adj_route_advertised) | |
13866 | json_object_object_add(json, "advertisedRoutes", | |
13867 | json_ar); | |
13868 | else | |
13869 | json_object_object_add(json, "receivedRoutes", json_ar); | |
13870 | json_object_int_add(json, "totalPrefixCounter", output_count); | |
13871 | json_object_int_add(json, "filteredPrefixCounter", | |
13872 | filtered_count); | |
13873 | ||
13874 | /* | |
13875 | * These fields only give up ownership to `json` when `header1` | |
13876 | * is used (set to zero). See code in `show_adj_route` and | |
13877 | * `show_adj_route_header`. | |
13878 | */ | |
13879 | if (header1 == 1) { | |
13880 | json_object_free(json_scode); | |
13881 | json_object_free(json_ocode); | |
13882 | } | |
13883 | ||
13884 | vty_json(vty, json); | |
13885 | } else if (output_count > 0) { | |
13886 | if (filtered_count > 0) | |
13887 | vty_out(vty, | |
13888 | "\nTotal number of prefixes %ld (%ld filtered)\n", | |
13889 | output_count, filtered_count); | |
13890 | else | |
13891 | vty_out(vty, "\nTotal number of prefixes %ld\n", | |
13892 | output_count); | |
13893 | } | |
13894 | ||
13895 | return CMD_SUCCESS; | |
13896 | } | |
13897 | ||
13898 | DEFPY (show_ip_bgp_instance_neighbor_bestpath_route, | |
13899 | show_ip_bgp_instance_neighbor_bestpath_route_cmd, | |
13900 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] neighbors <A.B.C.D|X:X::X:X|WORD> bestpath-routes [json$uj | wide$wide]", | |
13901 | SHOW_STR | |
13902 | IP_STR | |
13903 | BGP_STR | |
13904 | BGP_INSTANCE_HELP_STR | |
13905 | BGP_AFI_HELP_STR | |
13906 | BGP_SAFI_WITH_LABEL_HELP_STR | |
13907 | "Detailed information on TCP and BGP neighbor connections\n" | |
13908 | "Neighbor to display information about\n" | |
13909 | "Neighbor to display information about\n" | |
13910 | "Neighbor on BGP configured interface\n" | |
13911 | "Display the routes selected by best path\n" | |
13912 | JSON_STR | |
13913 | "Increase table width for longer prefixes\n") | |
13914 | { | |
13915 | afi_t afi = AFI_IP6; | |
13916 | safi_t safi = SAFI_UNICAST; | |
13917 | char *rmap_name = NULL; | |
13918 | char *peerstr = NULL; | |
13919 | struct bgp *bgp = NULL; | |
13920 | struct peer *peer; | |
13921 | enum bgp_show_adj_route_type type = bgp_show_adj_route_bestpath; | |
13922 | int idx = 0; | |
13923 | uint16_t show_flags = 0; | |
13924 | ||
13925 | if (uj) | |
13926 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
13927 | ||
13928 | if (wide) | |
13929 | SET_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
13930 | ||
13931 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
13932 | &bgp, uj); | |
13933 | ||
13934 | if (!idx) | |
13935 | return CMD_WARNING; | |
13936 | ||
13937 | argv_find(argv, argc, "neighbors", &idx); | |
13938 | peerstr = argv[++idx]->arg; | |
13939 | ||
13940 | peer = peer_lookup_in_view(vty, bgp, peerstr, uj); | |
13941 | if (!peer) | |
13942 | return CMD_WARNING; | |
13943 | ||
13944 | return peer_adj_routes(vty, peer, afi, safi, type, rmap_name, | |
13945 | show_flags); | |
13946 | } | |
13947 | ||
13948 | DEFPY (show_ip_bgp_instance_neighbor_advertised_route, | |
13949 | show_ip_bgp_instance_neighbor_advertised_route_cmd, | |
13950 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] [all$all] neighbors <A.B.C.D|X:X::X:X|WORD> <advertised-routes|received-routes|filtered-routes> [route-map WORD] [json$uj | wide$wide]", | |
13951 | SHOW_STR | |
13952 | IP_STR | |
13953 | BGP_STR | |
13954 | BGP_INSTANCE_HELP_STR | |
13955 | BGP_AFI_HELP_STR | |
13956 | BGP_SAFI_WITH_LABEL_HELP_STR | |
13957 | "Display the entries for all address families\n" | |
13958 | "Detailed information on TCP and BGP neighbor connections\n" | |
13959 | "Neighbor to display information about\n" | |
13960 | "Neighbor to display information about\n" | |
13961 | "Neighbor on BGP configured interface\n" | |
13962 | "Display the routes advertised to a BGP neighbor\n" | |
13963 | "Display the received routes from neighbor\n" | |
13964 | "Display the filtered routes received from neighbor\n" | |
13965 | "Route-map to modify the attributes\n" | |
13966 | "Name of the route map\n" | |
13967 | JSON_STR | |
13968 | "Increase table width for longer prefixes\n") | |
13969 | { | |
13970 | afi_t afi = AFI_IP6; | |
13971 | safi_t safi = SAFI_UNICAST; | |
13972 | char *rmap_name = NULL; | |
13973 | char *peerstr = NULL; | |
13974 | struct bgp *bgp = NULL; | |
13975 | struct peer *peer; | |
13976 | enum bgp_show_adj_route_type type = bgp_show_adj_route_advertised; | |
13977 | int idx = 0; | |
13978 | bool first = true; | |
13979 | uint16_t show_flags = 0; | |
13980 | ||
13981 | if (uj) { | |
13982 | argc--; | |
13983 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
13984 | } | |
13985 | ||
13986 | if (all) { | |
13987 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_ALL); | |
13988 | if (argv_find(argv, argc, "ipv4", &idx)) | |
13989 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP); | |
13990 | ||
13991 | if (argv_find(argv, argc, "ipv6", &idx)) | |
13992 | SET_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP6); | |
13993 | } | |
13994 | ||
13995 | if (wide) | |
13996 | SET_FLAG(show_flags, BGP_SHOW_OPT_WIDE); | |
13997 | ||
13998 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
13999 | &bgp, uj); | |
14000 | if (!idx) | |
14001 | return CMD_WARNING; | |
14002 | ||
14003 | /* neighbors <A.B.C.D|X:X::X:X|WORD> */ | |
14004 | argv_find(argv, argc, "neighbors", &idx); | |
14005 | peerstr = argv[++idx]->arg; | |
14006 | ||
14007 | peer = peer_lookup_in_view(vty, bgp, peerstr, uj); | |
14008 | if (!peer) | |
14009 | return CMD_WARNING; | |
14010 | ||
14011 | if (argv_find(argv, argc, "advertised-routes", &idx)) | |
14012 | type = bgp_show_adj_route_advertised; | |
14013 | else if (argv_find(argv, argc, "received-routes", &idx)) | |
14014 | type = bgp_show_adj_route_received; | |
14015 | else if (argv_find(argv, argc, "filtered-routes", &idx)) | |
14016 | type = bgp_show_adj_route_filtered; | |
14017 | ||
14018 | if (argv_find(argv, argc, "route-map", &idx)) | |
14019 | rmap_name = argv[++idx]->arg; | |
14020 | ||
14021 | if (!all) | |
14022 | return peer_adj_routes(vty, peer, afi, safi, type, rmap_name, | |
14023 | show_flags); | |
14024 | if (uj) | |
14025 | vty_out(vty, "{\n"); | |
14026 | ||
14027 | if (CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP) | |
14028 | || CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP6)) { | |
14029 | afi = CHECK_FLAG(show_flags, BGP_SHOW_OPT_AFI_IP) ? AFI_IP | |
14030 | : AFI_IP6; | |
14031 | FOREACH_SAFI (safi) { | |
14032 | if (!bgp_afi_safi_peer_exists(bgp, afi, safi)) | |
14033 | continue; | |
14034 | ||
14035 | if (uj) { | |
14036 | if (first) | |
14037 | first = false; | |
14038 | else | |
14039 | vty_out(vty, ",\n"); | |
14040 | vty_out(vty, "\"%s\":", | |
14041 | get_afi_safi_str(afi, safi, true)); | |
14042 | } else | |
14043 | vty_out(vty, "\nFor address family: %s\n", | |
14044 | get_afi_safi_str(afi, safi, false)); | |
14045 | ||
14046 | peer_adj_routes(vty, peer, afi, safi, type, rmap_name, | |
14047 | show_flags); | |
14048 | } | |
14049 | } else { | |
14050 | FOREACH_AFI_SAFI (afi, safi) { | |
14051 | if (!bgp_afi_safi_peer_exists(bgp, afi, safi)) | |
14052 | continue; | |
14053 | ||
14054 | if (uj) { | |
14055 | if (first) | |
14056 | first = false; | |
14057 | else | |
14058 | vty_out(vty, ",\n"); | |
14059 | vty_out(vty, "\"%s\":", | |
14060 | get_afi_safi_str(afi, safi, true)); | |
14061 | } else | |
14062 | vty_out(vty, "\nFor address family: %s\n", | |
14063 | get_afi_safi_str(afi, safi, false)); | |
14064 | ||
14065 | peer_adj_routes(vty, peer, afi, safi, type, rmap_name, | |
14066 | show_flags); | |
14067 | } | |
14068 | } | |
14069 | if (uj) | |
14070 | vty_out(vty, "}\n"); | |
14071 | ||
14072 | return CMD_SUCCESS; | |
14073 | } | |
14074 | ||
14075 | DEFUN (show_ip_bgp_neighbor_received_prefix_filter, | |
14076 | show_ip_bgp_neighbor_received_prefix_filter_cmd, | |
14077 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] [<ipv4|ipv6> [unicast]] neighbors <A.B.C.D|X:X::X:X|WORD> received prefix-filter [json]", | |
14078 | SHOW_STR | |
14079 | IP_STR | |
14080 | BGP_STR | |
14081 | BGP_INSTANCE_HELP_STR | |
14082 | "Address Family\n" | |
14083 | "Address Family\n" | |
14084 | "Address Family modifier\n" | |
14085 | "Detailed information on TCP and BGP neighbor connections\n" | |
14086 | "Neighbor to display information about\n" | |
14087 | "Neighbor to display information about\n" | |
14088 | "Neighbor on BGP configured interface\n" | |
14089 | "Display information received from a BGP neighbor\n" | |
14090 | "Display the prefixlist filter\n" | |
14091 | JSON_STR) | |
14092 | { | |
14093 | afi_t afi = AFI_IP6; | |
14094 | safi_t safi = SAFI_UNICAST; | |
14095 | char *peerstr = NULL; | |
14096 | char name[BUFSIZ]; | |
14097 | struct peer *peer; | |
14098 | int count; | |
14099 | int idx = 0; | |
14100 | struct bgp *bgp = NULL; | |
14101 | bool uj = use_json(argc, argv); | |
14102 | ||
14103 | if (uj) | |
14104 | argc--; | |
14105 | ||
14106 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
14107 | &bgp, uj); | |
14108 | if (!idx) | |
14109 | return CMD_WARNING; | |
14110 | ||
14111 | /* neighbors <A.B.C.D|X:X::X:X|WORD> */ | |
14112 | argv_find(argv, argc, "neighbors", &idx); | |
14113 | peerstr = argv[++idx]->arg; | |
14114 | ||
14115 | peer = peer_lookup_in_view(vty, bgp, peerstr, uj); | |
14116 | if (!peer) | |
14117 | return CMD_WARNING; | |
14118 | ||
14119 | snprintf(name, sizeof(name), "%s.%d.%d", peer->host, afi, safi); | |
14120 | count = prefix_bgp_show_prefix_list(NULL, afi, name, uj); | |
14121 | if (count) { | |
14122 | if (!uj) | |
14123 | vty_out(vty, "Address Family: %s\n", | |
14124 | get_afi_safi_str(afi, safi, false)); | |
14125 | prefix_bgp_show_prefix_list(vty, afi, name, uj); | |
14126 | } else { | |
14127 | if (uj) | |
14128 | vty_out(vty, "{}\n"); | |
14129 | else | |
14130 | vty_out(vty, "No functional output\n"); | |
14131 | } | |
14132 | ||
14133 | return CMD_SUCCESS; | |
14134 | } | |
14135 | ||
14136 | static int bgp_show_neighbor_route(struct vty *vty, struct peer *peer, | |
14137 | afi_t afi, safi_t safi, | |
14138 | enum bgp_show_type type, bool use_json) | |
14139 | { | |
14140 | uint16_t show_flags = 0; | |
14141 | ||
14142 | if (use_json) | |
14143 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
14144 | ||
14145 | if (!peer || !peer->afc[afi][safi]) { | |
14146 | if (use_json) { | |
14147 | json_object *json_no = NULL; | |
14148 | json_no = json_object_new_object(); | |
14149 | json_object_string_add( | |
14150 | json_no, "warning", | |
14151 | "No such neighbor or address family"); | |
14152 | vty_out(vty, "%s\n", | |
14153 | json_object_to_json_string(json_no)); | |
14154 | json_object_free(json_no); | |
14155 | } else | |
14156 | vty_out(vty, "%% No such neighbor or address family\n"); | |
14157 | return CMD_WARNING; | |
14158 | } | |
14159 | ||
14160 | /* labeled-unicast routes live in the unicast table */ | |
14161 | if (safi == SAFI_LABELED_UNICAST) | |
14162 | safi = SAFI_UNICAST; | |
14163 | ||
14164 | return bgp_show(vty, peer->bgp, afi, safi, type, &peer->su, show_flags, | |
14165 | RPKI_NOT_BEING_USED); | |
14166 | } | |
14167 | ||
14168 | DEFUN (show_ip_bgp_flowspec_routes_detailed, | |
14169 | show_ip_bgp_flowspec_routes_detailed_cmd, | |
14170 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" flowspec] detail [json]", | |
14171 | SHOW_STR | |
14172 | IP_STR | |
14173 | BGP_STR | |
14174 | BGP_INSTANCE_HELP_STR | |
14175 | BGP_AFI_HELP_STR | |
14176 | "SAFI Flowspec\n" | |
14177 | "Detailed information on flowspec entries\n" | |
14178 | JSON_STR) | |
14179 | { | |
14180 | afi_t afi = AFI_IP6; | |
14181 | safi_t safi = SAFI_UNICAST; | |
14182 | struct bgp *bgp = NULL; | |
14183 | int idx = 0; | |
14184 | bool uj = use_json(argc, argv); | |
14185 | uint16_t show_flags = BGP_SHOW_OPT_DETAIL; | |
14186 | ||
14187 | if (uj) { | |
14188 | argc--; | |
14189 | SET_FLAG(show_flags, BGP_SHOW_OPT_JSON); | |
14190 | } | |
14191 | ||
14192 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
14193 | &bgp, uj); | |
14194 | if (!idx) | |
14195 | return CMD_WARNING; | |
14196 | ||
14197 | return bgp_show(vty, bgp, afi, safi, bgp_show_type_detail, NULL, | |
14198 | show_flags, RPKI_NOT_BEING_USED); | |
14199 | } | |
14200 | ||
14201 | DEFUN (show_ip_bgp_neighbor_routes, | |
14202 | show_ip_bgp_neighbor_routes_cmd, | |
14203 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]] neighbors <A.B.C.D|X:X::X:X|WORD> <flap-statistics|dampened-routes|routes> [json]", | |
14204 | SHOW_STR | |
14205 | IP_STR | |
14206 | BGP_STR | |
14207 | BGP_INSTANCE_HELP_STR | |
14208 | BGP_AFI_HELP_STR | |
14209 | BGP_SAFI_WITH_LABEL_HELP_STR | |
14210 | "Detailed information on TCP and BGP neighbor connections\n" | |
14211 | "Neighbor to display information about\n" | |
14212 | "Neighbor to display information about\n" | |
14213 | "Neighbor on BGP configured interface\n" | |
14214 | "Display flap statistics of the routes learned from neighbor\n" | |
14215 | "Display the dampened routes received from neighbor\n" | |
14216 | "Display routes learned from neighbor\n" | |
14217 | JSON_STR) | |
14218 | { | |
14219 | char *peerstr = NULL; | |
14220 | struct bgp *bgp = NULL; | |
14221 | afi_t afi = AFI_IP6; | |
14222 | safi_t safi = SAFI_UNICAST; | |
14223 | struct peer *peer; | |
14224 | enum bgp_show_type sh_type = bgp_show_type_neighbor; | |
14225 | int idx = 0; | |
14226 | bool uj = use_json(argc, argv); | |
14227 | ||
14228 | if (uj) | |
14229 | argc--; | |
14230 | ||
14231 | bgp_vty_find_and_parse_afi_safi_bgp(vty, argv, argc, &idx, &afi, &safi, | |
14232 | &bgp, uj); | |
14233 | if (!idx) | |
14234 | return CMD_WARNING; | |
14235 | ||
14236 | /* neighbors <A.B.C.D|X:X::X:X|WORD> */ | |
14237 | argv_find(argv, argc, "neighbors", &idx); | |
14238 | peerstr = argv[++idx]->arg; | |
14239 | ||
14240 | peer = peer_lookup_in_view(vty, bgp, peerstr, uj); | |
14241 | if (!peer) | |
14242 | return CMD_WARNING; | |
14243 | ||
14244 | if (argv_find(argv, argc, "flap-statistics", &idx)) | |
14245 | sh_type = bgp_show_type_flap_neighbor; | |
14246 | else if (argv_find(argv, argc, "dampened-routes", &idx)) | |
14247 | sh_type = bgp_show_type_damp_neighbor; | |
14248 | else if (argv_find(argv, argc, "routes", &idx)) | |
14249 | sh_type = bgp_show_type_neighbor; | |
14250 | ||
14251 | return bgp_show_neighbor_route(vty, peer, afi, safi, sh_type, uj); | |
14252 | } | |
14253 | ||
14254 | struct bgp_table *bgp_distance_table[AFI_MAX][SAFI_MAX]; | |
14255 | ||
14256 | struct bgp_distance { | |
14257 | /* Distance value for the IP source prefix. */ | |
14258 | uint8_t distance; | |
14259 | ||
14260 | /* Name of the access-list to be matched. */ | |
14261 | char *access_list; | |
14262 | }; | |
14263 | ||
14264 | DEFUN (show_bgp_afi_vpn_rd_route, | |
14265 | show_bgp_afi_vpn_rd_route_cmd, | |
14266 | "show bgp "BGP_AFI_CMD_STR" vpn rd <ASN:NN_OR_IP-ADDRESS:NN|all> <A.B.C.D/M|X:X::X:X/M> [json]", | |
14267 | SHOW_STR | |
14268 | BGP_STR | |
14269 | BGP_AFI_HELP_STR | |
14270 | "Address Family modifier\n" | |
14271 | "Display information for a route distinguisher\n" | |
14272 | "Route Distinguisher\n" | |
14273 | "All Route Distinguishers\n" | |
14274 | "Network in the BGP routing table to display\n" | |
14275 | "Network in the BGP routing table to display\n" | |
14276 | JSON_STR) | |
14277 | { | |
14278 | int ret; | |
14279 | struct prefix_rd prd; | |
14280 | afi_t afi = AFI_MAX; | |
14281 | int idx = 0; | |
14282 | ||
14283 | if (!argv_find_and_parse_afi(argv, argc, &idx, &afi)) { | |
14284 | vty_out(vty, "%% Malformed Address Family\n"); | |
14285 | return CMD_WARNING; | |
14286 | } | |
14287 | ||
14288 | if (!strcmp(argv[5]->arg, "all")) | |
14289 | return bgp_show_route(vty, NULL, argv[6]->arg, afi, | |
14290 | SAFI_MPLS_VPN, NULL, 0, BGP_PATH_SHOW_ALL, | |
14291 | RPKI_NOT_BEING_USED, | |
14292 | use_json(argc, argv)); | |
14293 | ||
14294 | ret = str2prefix_rd(argv[5]->arg, &prd); | |
14295 | if (!ret) { | |
14296 | vty_out(vty, "%% Malformed Route Distinguisher\n"); | |
14297 | return CMD_WARNING; | |
14298 | } | |
14299 | ||
14300 | return bgp_show_route(vty, NULL, argv[6]->arg, afi, SAFI_MPLS_VPN, &prd, | |
14301 | 0, BGP_PATH_SHOW_ALL, RPKI_NOT_BEING_USED, | |
14302 | use_json(argc, argv)); | |
14303 | } | |
14304 | ||
14305 | static struct bgp_distance *bgp_distance_new(void) | |
14306 | { | |
14307 | return XCALLOC(MTYPE_BGP_DISTANCE, sizeof(struct bgp_distance)); | |
14308 | } | |
14309 | ||
14310 | static void bgp_distance_free(struct bgp_distance *bdistance) | |
14311 | { | |
14312 | XFREE(MTYPE_BGP_DISTANCE, bdistance); | |
14313 | } | |
14314 | ||
14315 | static int bgp_distance_set(struct vty *vty, const char *distance_str, | |
14316 | const char *ip_str, const char *access_list_str) | |
14317 | { | |
14318 | int ret; | |
14319 | afi_t afi; | |
14320 | safi_t safi; | |
14321 | struct prefix p; | |
14322 | uint8_t distance; | |
14323 | struct bgp_dest *dest; | |
14324 | struct bgp_distance *bdistance; | |
14325 | ||
14326 | afi = bgp_node_afi(vty); | |
14327 | safi = bgp_node_safi(vty); | |
14328 | ||
14329 | ret = str2prefix(ip_str, &p); | |
14330 | if (ret == 0) { | |
14331 | vty_out(vty, "Malformed prefix\n"); | |
14332 | return CMD_WARNING_CONFIG_FAILED; | |
14333 | } | |
14334 | ||
14335 | distance = atoi(distance_str); | |
14336 | ||
14337 | /* Get BGP distance node. */ | |
14338 | dest = bgp_node_get(bgp_distance_table[afi][safi], &p); | |
14339 | bdistance = bgp_dest_get_bgp_distance_info(dest); | |
14340 | if (bdistance) | |
14341 | bgp_dest_unlock_node(dest); | |
14342 | else { | |
14343 | bdistance = bgp_distance_new(); | |
14344 | bgp_dest_set_bgp_distance_info(dest, bdistance); | |
14345 | } | |
14346 | ||
14347 | /* Set distance value. */ | |
14348 | bdistance->distance = distance; | |
14349 | ||
14350 | /* Reset access-list configuration. */ | |
14351 | XFREE(MTYPE_AS_LIST, bdistance->access_list); | |
14352 | if (access_list_str) | |
14353 | bdistance->access_list = | |
14354 | XSTRDUP(MTYPE_AS_LIST, access_list_str); | |
14355 | ||
14356 | return CMD_SUCCESS; | |
14357 | } | |
14358 | ||
14359 | static int bgp_distance_unset(struct vty *vty, const char *distance_str, | |
14360 | const char *ip_str, const char *access_list_str) | |
14361 | { | |
14362 | int ret; | |
14363 | afi_t afi; | |
14364 | safi_t safi; | |
14365 | struct prefix p; | |
14366 | int distance; | |
14367 | struct bgp_dest *dest; | |
14368 | struct bgp_distance *bdistance; | |
14369 | ||
14370 | afi = bgp_node_afi(vty); | |
14371 | safi = bgp_node_safi(vty); | |
14372 | ||
14373 | ret = str2prefix(ip_str, &p); | |
14374 | if (ret == 0) { | |
14375 | vty_out(vty, "Malformed prefix\n"); | |
14376 | return CMD_WARNING_CONFIG_FAILED; | |
14377 | } | |
14378 | ||
14379 | dest = bgp_node_lookup(bgp_distance_table[afi][safi], &p); | |
14380 | if (!dest) { | |
14381 | vty_out(vty, "Can't find specified prefix\n"); | |
14382 | return CMD_WARNING_CONFIG_FAILED; | |
14383 | } | |
14384 | ||
14385 | bdistance = bgp_dest_get_bgp_distance_info(dest); | |
14386 | distance = atoi(distance_str); | |
14387 | ||
14388 | if (bdistance->distance != distance) { | |
14389 | vty_out(vty, "Distance does not match configured\n"); | |
14390 | bgp_dest_unlock_node(dest); | |
14391 | return CMD_WARNING_CONFIG_FAILED; | |
14392 | } | |
14393 | ||
14394 | XFREE(MTYPE_AS_LIST, bdistance->access_list); | |
14395 | bgp_distance_free(bdistance); | |
14396 | ||
14397 | bgp_dest_set_bgp_path_info(dest, NULL); | |
14398 | bgp_dest_unlock_node(dest); | |
14399 | bgp_dest_unlock_node(dest); | |
14400 | ||
14401 | return CMD_SUCCESS; | |
14402 | } | |
14403 | ||
14404 | /* Apply BGP information to distance method. */ | |
14405 | uint8_t bgp_distance_apply(const struct prefix *p, struct bgp_path_info *pinfo, | |
14406 | afi_t afi, safi_t safi, struct bgp *bgp) | |
14407 | { | |
14408 | struct bgp_dest *dest; | |
14409 | struct prefix q = {0}; | |
14410 | struct peer *peer; | |
14411 | struct bgp_distance *bdistance; | |
14412 | struct access_list *alist; | |
14413 | struct bgp_static *bgp_static; | |
14414 | ||
14415 | if (!bgp) | |
14416 | return 0; | |
14417 | ||
14418 | peer = pinfo->peer; | |
14419 | ||
14420 | if (pinfo->attr->distance) | |
14421 | return pinfo->attr->distance; | |
14422 | ||
14423 | /* Check source address. | |
14424 | * Note: for aggregate route, peer can have unspec af type. | |
14425 | */ | |
14426 | if (pinfo->sub_type != BGP_ROUTE_AGGREGATE | |
14427 | && !sockunion2hostprefix(&peer->su, &q)) | |
14428 | return 0; | |
14429 | ||
14430 | dest = bgp_node_match(bgp_distance_table[afi][safi], &q); | |
14431 | if (dest) { | |
14432 | bdistance = bgp_dest_get_bgp_distance_info(dest); | |
14433 | bgp_dest_unlock_node(dest); | |
14434 | ||
14435 | if (bdistance->access_list) { | |
14436 | alist = access_list_lookup(afi, bdistance->access_list); | |
14437 | if (alist | |
14438 | && access_list_apply(alist, p) == FILTER_PERMIT) | |
14439 | return bdistance->distance; | |
14440 | } else | |
14441 | return bdistance->distance; | |
14442 | } | |
14443 | ||
14444 | /* Backdoor check. */ | |
14445 | dest = bgp_node_lookup(bgp->route[afi][safi], p); | |
14446 | if (dest) { | |
14447 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
14448 | bgp_dest_unlock_node(dest); | |
14449 | ||
14450 | if (bgp_static->backdoor) { | |
14451 | if (bgp->distance_local[afi][safi]) | |
14452 | return bgp->distance_local[afi][safi]; | |
14453 | else | |
14454 | return ZEBRA_IBGP_DISTANCE_DEFAULT; | |
14455 | } | |
14456 | } | |
14457 | ||
14458 | if (peer->sort == BGP_PEER_EBGP) { | |
14459 | if (bgp->distance_ebgp[afi][safi]) | |
14460 | return bgp->distance_ebgp[afi][safi]; | |
14461 | return ZEBRA_EBGP_DISTANCE_DEFAULT; | |
14462 | } else if (peer->sort == BGP_PEER_IBGP) { | |
14463 | if (bgp->distance_ibgp[afi][safi]) | |
14464 | return bgp->distance_ibgp[afi][safi]; | |
14465 | return ZEBRA_IBGP_DISTANCE_DEFAULT; | |
14466 | } else { | |
14467 | if (bgp->distance_local[afi][safi]) | |
14468 | return bgp->distance_local[afi][safi]; | |
14469 | return ZEBRA_IBGP_DISTANCE_DEFAULT; | |
14470 | } | |
14471 | } | |
14472 | ||
14473 | /* If we enter `distance bgp (1-255) (1-255) (1-255)`, | |
14474 | * we should tell ZEBRA update the routes for a specific | |
14475 | * AFI/SAFI to reflect changes in RIB. | |
14476 | */ | |
14477 | static void bgp_announce_routes_distance_update(struct bgp *bgp, | |
14478 | afi_t update_afi, | |
14479 | safi_t update_safi) | |
14480 | { | |
14481 | afi_t afi; | |
14482 | safi_t safi; | |
14483 | ||
14484 | FOREACH_AFI_SAFI (afi, safi) { | |
14485 | if (!bgp_fibupd_safi(safi)) | |
14486 | continue; | |
14487 | ||
14488 | if (afi != update_afi && safi != update_safi) | |
14489 | continue; | |
14490 | ||
14491 | if (BGP_DEBUG(zebra, ZEBRA)) | |
14492 | zlog_debug( | |
14493 | "%s: Announcing routes due to distance change afi/safi (%d/%d)", | |
14494 | __func__, afi, safi); | |
14495 | bgp_zebra_announce_table(bgp, afi, safi); | |
14496 | } | |
14497 | } | |
14498 | ||
14499 | DEFUN (bgp_distance, | |
14500 | bgp_distance_cmd, | |
14501 | "distance bgp (1-255) (1-255) (1-255)", | |
14502 | "Define an administrative distance\n" | |
14503 | "BGP distance\n" | |
14504 | "Distance for routes external to the AS\n" | |
14505 | "Distance for routes internal to the AS\n" | |
14506 | "Distance for local routes\n") | |
14507 | { | |
14508 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
14509 | int idx_number = 2; | |
14510 | int idx_number_2 = 3; | |
14511 | int idx_number_3 = 4; | |
14512 | int distance_ebgp = atoi(argv[idx_number]->arg); | |
14513 | int distance_ibgp = atoi(argv[idx_number_2]->arg); | |
14514 | int distance_local = atoi(argv[idx_number_3]->arg); | |
14515 | afi_t afi; | |
14516 | safi_t safi; | |
14517 | ||
14518 | afi = bgp_node_afi(vty); | |
14519 | safi = bgp_node_safi(vty); | |
14520 | ||
14521 | if (bgp->distance_ebgp[afi][safi] != distance_ebgp | |
14522 | || bgp->distance_ibgp[afi][safi] != distance_ibgp | |
14523 | || bgp->distance_local[afi][safi] != distance_local) { | |
14524 | bgp->distance_ebgp[afi][safi] = distance_ebgp; | |
14525 | bgp->distance_ibgp[afi][safi] = distance_ibgp; | |
14526 | bgp->distance_local[afi][safi] = distance_local; | |
14527 | bgp_announce_routes_distance_update(bgp, afi, safi); | |
14528 | } | |
14529 | return CMD_SUCCESS; | |
14530 | } | |
14531 | ||
14532 | DEFUN (no_bgp_distance, | |
14533 | no_bgp_distance_cmd, | |
14534 | "no distance bgp [(1-255) (1-255) (1-255)]", | |
14535 | NO_STR | |
14536 | "Define an administrative distance\n" | |
14537 | "BGP distance\n" | |
14538 | "Distance for routes external to the AS\n" | |
14539 | "Distance for routes internal to the AS\n" | |
14540 | "Distance for local routes\n") | |
14541 | { | |
14542 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
14543 | afi_t afi; | |
14544 | safi_t safi; | |
14545 | ||
14546 | afi = bgp_node_afi(vty); | |
14547 | safi = bgp_node_safi(vty); | |
14548 | ||
14549 | if (bgp->distance_ebgp[afi][safi] != 0 | |
14550 | || bgp->distance_ibgp[afi][safi] != 0 | |
14551 | || bgp->distance_local[afi][safi] != 0) { | |
14552 | bgp->distance_ebgp[afi][safi] = 0; | |
14553 | bgp->distance_ibgp[afi][safi] = 0; | |
14554 | bgp->distance_local[afi][safi] = 0; | |
14555 | bgp_announce_routes_distance_update(bgp, afi, safi); | |
14556 | } | |
14557 | return CMD_SUCCESS; | |
14558 | } | |
14559 | ||
14560 | ||
14561 | DEFUN (bgp_distance_source, | |
14562 | bgp_distance_source_cmd, | |
14563 | "distance (1-255) A.B.C.D/M", | |
14564 | "Define an administrative distance\n" | |
14565 | "Administrative distance\n" | |
14566 | "IP source prefix\n") | |
14567 | { | |
14568 | int idx_number = 1; | |
14569 | int idx_ipv4_prefixlen = 2; | |
14570 | bgp_distance_set(vty, argv[idx_number]->arg, | |
14571 | argv[idx_ipv4_prefixlen]->arg, NULL); | |
14572 | return CMD_SUCCESS; | |
14573 | } | |
14574 | ||
14575 | DEFUN (no_bgp_distance_source, | |
14576 | no_bgp_distance_source_cmd, | |
14577 | "no distance (1-255) A.B.C.D/M", | |
14578 | NO_STR | |
14579 | "Define an administrative distance\n" | |
14580 | "Administrative distance\n" | |
14581 | "IP source prefix\n") | |
14582 | { | |
14583 | int idx_number = 2; | |
14584 | int idx_ipv4_prefixlen = 3; | |
14585 | bgp_distance_unset(vty, argv[idx_number]->arg, | |
14586 | argv[idx_ipv4_prefixlen]->arg, NULL); | |
14587 | return CMD_SUCCESS; | |
14588 | } | |
14589 | ||
14590 | DEFUN (bgp_distance_source_access_list, | |
14591 | bgp_distance_source_access_list_cmd, | |
14592 | "distance (1-255) A.B.C.D/M WORD", | |
14593 | "Define an administrative distance\n" | |
14594 | "Administrative distance\n" | |
14595 | "IP source prefix\n" | |
14596 | "Access list name\n") | |
14597 | { | |
14598 | int idx_number = 1; | |
14599 | int idx_ipv4_prefixlen = 2; | |
14600 | int idx_word = 3; | |
14601 | bgp_distance_set(vty, argv[idx_number]->arg, | |
14602 | argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
14603 | return CMD_SUCCESS; | |
14604 | } | |
14605 | ||
14606 | DEFUN (no_bgp_distance_source_access_list, | |
14607 | no_bgp_distance_source_access_list_cmd, | |
14608 | "no distance (1-255) A.B.C.D/M WORD", | |
14609 | NO_STR | |
14610 | "Define an administrative distance\n" | |
14611 | "Administrative distance\n" | |
14612 | "IP source prefix\n" | |
14613 | "Access list name\n") | |
14614 | { | |
14615 | int idx_number = 2; | |
14616 | int idx_ipv4_prefixlen = 3; | |
14617 | int idx_word = 4; | |
14618 | bgp_distance_unset(vty, argv[idx_number]->arg, | |
14619 | argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
14620 | return CMD_SUCCESS; | |
14621 | } | |
14622 | ||
14623 | DEFUN (ipv6_bgp_distance_source, | |
14624 | ipv6_bgp_distance_source_cmd, | |
14625 | "distance (1-255) X:X::X:X/M", | |
14626 | "Define an administrative distance\n" | |
14627 | "Administrative distance\n" | |
14628 | "IP source prefix\n") | |
14629 | { | |
14630 | bgp_distance_set(vty, argv[1]->arg, argv[2]->arg, NULL); | |
14631 | return CMD_SUCCESS; | |
14632 | } | |
14633 | ||
14634 | DEFUN (no_ipv6_bgp_distance_source, | |
14635 | no_ipv6_bgp_distance_source_cmd, | |
14636 | "no distance (1-255) X:X::X:X/M", | |
14637 | NO_STR | |
14638 | "Define an administrative distance\n" | |
14639 | "Administrative distance\n" | |
14640 | "IP source prefix\n") | |
14641 | { | |
14642 | bgp_distance_unset(vty, argv[2]->arg, argv[3]->arg, NULL); | |
14643 | return CMD_SUCCESS; | |
14644 | } | |
14645 | ||
14646 | DEFUN (ipv6_bgp_distance_source_access_list, | |
14647 | ipv6_bgp_distance_source_access_list_cmd, | |
14648 | "distance (1-255) X:X::X:X/M WORD", | |
14649 | "Define an administrative distance\n" | |
14650 | "Administrative distance\n" | |
14651 | "IP source prefix\n" | |
14652 | "Access list name\n") | |
14653 | { | |
14654 | bgp_distance_set(vty, argv[1]->arg, argv[2]->arg, argv[3]->arg); | |
14655 | return CMD_SUCCESS; | |
14656 | } | |
14657 | ||
14658 | DEFUN (no_ipv6_bgp_distance_source_access_list, | |
14659 | no_ipv6_bgp_distance_source_access_list_cmd, | |
14660 | "no distance (1-255) X:X::X:X/M WORD", | |
14661 | NO_STR | |
14662 | "Define an administrative distance\n" | |
14663 | "Administrative distance\n" | |
14664 | "IP source prefix\n" | |
14665 | "Access list name\n") | |
14666 | { | |
14667 | bgp_distance_unset(vty, argv[2]->arg, argv[3]->arg, argv[4]->arg); | |
14668 | return CMD_SUCCESS; | |
14669 | } | |
14670 | ||
14671 | DEFUN (bgp_damp_set, | |
14672 | bgp_damp_set_cmd, | |
14673 | "bgp dampening [(1-45) [(1-20000) (1-50000) (1-255)]]", | |
14674 | "BGP Specific commands\n" | |
14675 | "Enable route-flap dampening\n" | |
14676 | "Half-life time for the penalty\n" | |
14677 | "Value to start reusing a route\n" | |
14678 | "Value to start suppressing a route\n" | |
14679 | "Maximum duration to suppress a stable route\n") | |
14680 | { | |
14681 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
14682 | int idx_half_life = 2; | |
14683 | int idx_reuse = 3; | |
14684 | int idx_suppress = 4; | |
14685 | int idx_max_suppress = 5; | |
14686 | int half = DEFAULT_HALF_LIFE * 60; | |
14687 | int reuse = DEFAULT_REUSE; | |
14688 | int suppress = DEFAULT_SUPPRESS; | |
14689 | int max = 4 * half; | |
14690 | ||
14691 | if (argc == 6) { | |
14692 | half = atoi(argv[idx_half_life]->arg) * 60; | |
14693 | reuse = atoi(argv[idx_reuse]->arg); | |
14694 | suppress = atoi(argv[idx_suppress]->arg); | |
14695 | max = atoi(argv[idx_max_suppress]->arg) * 60; | |
14696 | } else if (argc == 3) { | |
14697 | half = atoi(argv[idx_half_life]->arg) * 60; | |
14698 | max = 4 * half; | |
14699 | } | |
14700 | ||
14701 | /* | |
14702 | * These can't be 0 but our SA doesn't understand the | |
14703 | * way our cli is constructed | |
14704 | */ | |
14705 | assert(reuse); | |
14706 | assert(half); | |
14707 | if (suppress < reuse) { | |
14708 | vty_out(vty, | |
14709 | "Suppress value cannot be less than reuse value \n"); | |
14710 | return 0; | |
14711 | } | |
14712 | ||
14713 | return bgp_damp_enable(bgp, bgp_node_afi(vty), bgp_node_safi(vty), half, | |
14714 | reuse, suppress, max); | |
14715 | } | |
14716 | ||
14717 | DEFUN (bgp_damp_unset, | |
14718 | bgp_damp_unset_cmd, | |
14719 | "no bgp dampening [(1-45) [(1-20000) (1-50000) (1-255)]]", | |
14720 | NO_STR | |
14721 | "BGP Specific commands\n" | |
14722 | "Enable route-flap dampening\n" | |
14723 | "Half-life time for the penalty\n" | |
14724 | "Value to start reusing a route\n" | |
14725 | "Value to start suppressing a route\n" | |
14726 | "Maximum duration to suppress a stable route\n") | |
14727 | { | |
14728 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
14729 | return bgp_damp_disable(bgp, bgp_node_afi(vty), bgp_node_safi(vty)); | |
14730 | } | |
14731 | ||
14732 | /* Display specified route of BGP table. */ | |
14733 | static int bgp_clear_damp_route(struct vty *vty, const char *view_name, | |
14734 | const char *ip_str, afi_t afi, safi_t safi, | |
14735 | struct prefix_rd *prd, int prefix_check) | |
14736 | { | |
14737 | int ret; | |
14738 | struct prefix match; | |
14739 | struct bgp_dest *dest; | |
14740 | struct bgp_dest *rm; | |
14741 | struct bgp_path_info *pi; | |
14742 | struct bgp_path_info *pi_temp; | |
14743 | struct bgp *bgp; | |
14744 | struct bgp_table *table; | |
14745 | ||
14746 | /* BGP structure lookup. */ | |
14747 | if (view_name) { | |
14748 | bgp = bgp_lookup_by_name(view_name); | |
14749 | if (bgp == NULL) { | |
14750 | vty_out(vty, "%% Can't find BGP instance %s\n", | |
14751 | view_name); | |
14752 | return CMD_WARNING; | |
14753 | } | |
14754 | } else { | |
14755 | bgp = bgp_get_default(); | |
14756 | if (bgp == NULL) { | |
14757 | vty_out(vty, "%% No BGP process is configured\n"); | |
14758 | return CMD_WARNING; | |
14759 | } | |
14760 | } | |
14761 | ||
14762 | /* Check IP address argument. */ | |
14763 | ret = str2prefix(ip_str, &match); | |
14764 | if (!ret) { | |
14765 | vty_out(vty, "%% address is malformed\n"); | |
14766 | return CMD_WARNING; | |
14767 | } | |
14768 | ||
14769 | match.family = afi2family(afi); | |
14770 | ||
14771 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) | |
14772 | || (safi == SAFI_EVPN)) { | |
14773 | for (dest = bgp_table_top(bgp->rib[AFI_IP][safi]); dest; | |
14774 | dest = bgp_route_next(dest)) { | |
14775 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
14776 | ||
14777 | if (prd && memcmp(dest_p->u.val, prd->val, 8) != 0) | |
14778 | continue; | |
14779 | table = bgp_dest_get_bgp_table_info(dest); | |
14780 | if (!table) | |
14781 | continue; | |
14782 | rm = bgp_node_match(table, &match); | |
14783 | if (rm == NULL) | |
14784 | continue; | |
14785 | ||
14786 | const struct prefix *rm_p = bgp_dest_get_prefix(dest); | |
14787 | ||
14788 | if (!prefix_check | |
14789 | || rm_p->prefixlen == match.prefixlen) { | |
14790 | pi = bgp_dest_get_bgp_path_info(rm); | |
14791 | while (pi) { | |
14792 | if (pi->extra && pi->extra->damp_info) { | |
14793 | pi_temp = pi->next; | |
14794 | bgp_damp_info_free( | |
14795 | pi->extra->damp_info, | |
14796 | 1, afi, safi); | |
14797 | pi = pi_temp; | |
14798 | } else | |
14799 | pi = pi->next; | |
14800 | } | |
14801 | } | |
14802 | ||
14803 | bgp_dest_unlock_node(rm); | |
14804 | } | |
14805 | } else { | |
14806 | dest = bgp_node_match(bgp->rib[afi][safi], &match); | |
14807 | if (dest != NULL) { | |
14808 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
14809 | ||
14810 | if (!prefix_check | |
14811 | || dest_p->prefixlen == match.prefixlen) { | |
14812 | pi = bgp_dest_get_bgp_path_info(dest); | |
14813 | while (pi) { | |
14814 | if (pi->extra && pi->extra->damp_info) { | |
14815 | pi_temp = pi->next; | |
14816 | bgp_damp_info_free( | |
14817 | pi->extra->damp_info, | |
14818 | 1, afi, safi); | |
14819 | pi = pi_temp; | |
14820 | } else | |
14821 | pi = pi->next; | |
14822 | } | |
14823 | } | |
14824 | ||
14825 | bgp_dest_unlock_node(dest); | |
14826 | } | |
14827 | } | |
14828 | ||
14829 | return CMD_SUCCESS; | |
14830 | } | |
14831 | ||
14832 | DEFUN (clear_ip_bgp_dampening, | |
14833 | clear_ip_bgp_dampening_cmd, | |
14834 | "clear ip bgp dampening", | |
14835 | CLEAR_STR | |
14836 | IP_STR | |
14837 | BGP_STR | |
14838 | "Clear route flap dampening information\n") | |
14839 | { | |
14840 | bgp_damp_info_clean(AFI_IP, SAFI_UNICAST); | |
14841 | return CMD_SUCCESS; | |
14842 | } | |
14843 | ||
14844 | DEFUN (clear_ip_bgp_dampening_prefix, | |
14845 | clear_ip_bgp_dampening_prefix_cmd, | |
14846 | "clear ip bgp dampening A.B.C.D/M", | |
14847 | CLEAR_STR | |
14848 | IP_STR | |
14849 | BGP_STR | |
14850 | "Clear route flap dampening information\n" | |
14851 | "IPv4 prefix\n") | |
14852 | { | |
14853 | int idx_ipv4_prefixlen = 4; | |
14854 | return bgp_clear_damp_route(vty, NULL, argv[idx_ipv4_prefixlen]->arg, | |
14855 | AFI_IP, SAFI_UNICAST, NULL, 1); | |
14856 | } | |
14857 | ||
14858 | DEFUN (clear_ip_bgp_dampening_address, | |
14859 | clear_ip_bgp_dampening_address_cmd, | |
14860 | "clear ip bgp dampening A.B.C.D", | |
14861 | CLEAR_STR | |
14862 | IP_STR | |
14863 | BGP_STR | |
14864 | "Clear route flap dampening information\n" | |
14865 | "Network to clear damping information\n") | |
14866 | { | |
14867 | int idx_ipv4 = 4; | |
14868 | return bgp_clear_damp_route(vty, NULL, argv[idx_ipv4]->arg, AFI_IP, | |
14869 | SAFI_UNICAST, NULL, 0); | |
14870 | } | |
14871 | ||
14872 | DEFUN (clear_ip_bgp_dampening_address_mask, | |
14873 | clear_ip_bgp_dampening_address_mask_cmd, | |
14874 | "clear ip bgp dampening A.B.C.D A.B.C.D", | |
14875 | CLEAR_STR | |
14876 | IP_STR | |
14877 | BGP_STR | |
14878 | "Clear route flap dampening information\n" | |
14879 | "Network to clear damping information\n" | |
14880 | "Network mask\n") | |
14881 | { | |
14882 | int idx_ipv4 = 4; | |
14883 | int idx_ipv4_2 = 5; | |
14884 | int ret; | |
14885 | char prefix_str[BUFSIZ]; | |
14886 | ||
14887 | ret = netmask_str2prefix_str(argv[idx_ipv4]->arg, argv[idx_ipv4_2]->arg, | |
14888 | prefix_str, sizeof(prefix_str)); | |
14889 | if (!ret) { | |
14890 | vty_out(vty, "%% Inconsistent address and mask\n"); | |
14891 | return CMD_WARNING; | |
14892 | } | |
14893 | ||
14894 | return bgp_clear_damp_route(vty, NULL, prefix_str, AFI_IP, SAFI_UNICAST, | |
14895 | NULL, 0); | |
14896 | } | |
14897 | ||
14898 | static void show_bgp_peerhash_entry(struct hash_bucket *bucket, void *arg) | |
14899 | { | |
14900 | struct vty *vty = arg; | |
14901 | struct peer *peer = bucket->data; | |
14902 | char buf[SU_ADDRSTRLEN]; | |
14903 | ||
14904 | vty_out(vty, "\tPeer: %s %s\n", peer->host, | |
14905 | sockunion2str(&peer->su, buf, sizeof(buf))); | |
14906 | } | |
14907 | ||
14908 | DEFUN (show_bgp_listeners, | |
14909 | show_bgp_listeners_cmd, | |
14910 | "show bgp listeners", | |
14911 | SHOW_STR | |
14912 | BGP_STR | |
14913 | "Display Listen Sockets and who created them\n") | |
14914 | { | |
14915 | bgp_dump_listener_info(vty); | |
14916 | ||
14917 | return CMD_SUCCESS; | |
14918 | } | |
14919 | ||
14920 | DEFUN (show_bgp_peerhash, | |
14921 | show_bgp_peerhash_cmd, | |
14922 | "show bgp peerhash", | |
14923 | SHOW_STR | |
14924 | BGP_STR | |
14925 | "Display information about the BGP peerhash\n") | |
14926 | { | |
14927 | struct list *instances = bm->bgp; | |
14928 | struct listnode *node; | |
14929 | struct bgp *bgp; | |
14930 | ||
14931 | for (ALL_LIST_ELEMENTS_RO(instances, node, bgp)) { | |
14932 | vty_out(vty, "BGP: %s\n", bgp->name); | |
14933 | hash_iterate(bgp->peerhash, show_bgp_peerhash_entry, | |
14934 | vty); | |
14935 | } | |
14936 | ||
14937 | return CMD_SUCCESS; | |
14938 | } | |
14939 | ||
14940 | /* also used for encap safi */ | |
14941 | static void bgp_config_write_network_vpn(struct vty *vty, struct bgp *bgp, | |
14942 | afi_t afi, safi_t safi) | |
14943 | { | |
14944 | struct bgp_dest *pdest; | |
14945 | struct bgp_dest *dest; | |
14946 | struct bgp_table *table; | |
14947 | const struct prefix *p; | |
14948 | const struct prefix_rd *prd; | |
14949 | struct bgp_static *bgp_static; | |
14950 | mpls_label_t label; | |
14951 | char rdbuf[RD_ADDRSTRLEN]; | |
14952 | ||
14953 | /* Network configuration. */ | |
14954 | for (pdest = bgp_table_top(bgp->route[afi][safi]); pdest; | |
14955 | pdest = bgp_route_next(pdest)) { | |
14956 | table = bgp_dest_get_bgp_table_info(pdest); | |
14957 | if (!table) | |
14958 | continue; | |
14959 | ||
14960 | for (dest = bgp_table_top(table); dest; | |
14961 | dest = bgp_route_next(dest)) { | |
14962 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
14963 | if (bgp_static == NULL) | |
14964 | continue; | |
14965 | ||
14966 | p = bgp_dest_get_prefix(dest); | |
14967 | prd = (const struct prefix_rd *)bgp_dest_get_prefix( | |
14968 | pdest); | |
14969 | ||
14970 | /* "network" configuration display. */ | |
14971 | prefix_rd2str(prd, rdbuf, sizeof(rdbuf)); | |
14972 | label = decode_label(&bgp_static->label); | |
14973 | ||
14974 | vty_out(vty, " network %pFX rd %s", p, rdbuf); | |
14975 | if (safi == SAFI_MPLS_VPN) | |
14976 | vty_out(vty, " label %u", label); | |
14977 | ||
14978 | if (bgp_static->rmap.name) | |
14979 | vty_out(vty, " route-map %s", | |
14980 | bgp_static->rmap.name); | |
14981 | ||
14982 | if (bgp_static->backdoor) | |
14983 | vty_out(vty, " backdoor"); | |
14984 | ||
14985 | vty_out(vty, "\n"); | |
14986 | } | |
14987 | } | |
14988 | } | |
14989 | ||
14990 | static void bgp_config_write_network_evpn(struct vty *vty, struct bgp *bgp, | |
14991 | afi_t afi, safi_t safi) | |
14992 | { | |
14993 | struct bgp_dest *pdest; | |
14994 | struct bgp_dest *dest; | |
14995 | struct bgp_table *table; | |
14996 | const struct prefix *p; | |
14997 | const struct prefix_rd *prd; | |
14998 | struct bgp_static *bgp_static; | |
14999 | char buf[PREFIX_STRLEN * 2]; | |
15000 | char buf2[SU_ADDRSTRLEN]; | |
15001 | char rdbuf[RD_ADDRSTRLEN]; | |
15002 | char esi_buf[ESI_BYTES]; | |
15003 | ||
15004 | /* Network configuration. */ | |
15005 | for (pdest = bgp_table_top(bgp->route[afi][safi]); pdest; | |
15006 | pdest = bgp_route_next(pdest)) { | |
15007 | table = bgp_dest_get_bgp_table_info(pdest); | |
15008 | if (!table) | |
15009 | continue; | |
15010 | ||
15011 | for (dest = bgp_table_top(table); dest; | |
15012 | dest = bgp_route_next(dest)) { | |
15013 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
15014 | if (bgp_static == NULL) | |
15015 | continue; | |
15016 | ||
15017 | char *macrouter = NULL; | |
15018 | ||
15019 | if (bgp_static->router_mac) | |
15020 | macrouter = prefix_mac2str( | |
15021 | bgp_static->router_mac, NULL, 0); | |
15022 | if (bgp_static->eth_s_id) | |
15023 | esi_to_str(bgp_static->eth_s_id, | |
15024 | esi_buf, sizeof(esi_buf)); | |
15025 | p = bgp_dest_get_prefix(dest); | |
15026 | prd = (struct prefix_rd *)bgp_dest_get_prefix(pdest); | |
15027 | ||
15028 | /* "network" configuration display. */ | |
15029 | prefix_rd2str(prd, rdbuf, sizeof(rdbuf)); | |
15030 | if (p->u.prefix_evpn.route_type == 5) { | |
15031 | char local_buf[PREFIX_STRLEN]; | |
15032 | uint8_t family = is_evpn_prefix_ipaddr_v4(( | |
15033 | struct prefix_evpn *)p) | |
15034 | ? AF_INET | |
15035 | : AF_INET6; | |
15036 | inet_ntop(family, | |
15037 | &p->u.prefix_evpn.prefix_addr.ip.ip.addr, | |
15038 | local_buf, PREFIX_STRLEN); | |
15039 | snprintf(buf, sizeof(buf), "%s/%u", local_buf, | |
15040 | p->u.prefix_evpn.prefix_addr | |
15041 | .ip_prefix_length); | |
15042 | } else { | |
15043 | prefix2str(p, buf, sizeof(buf)); | |
15044 | } | |
15045 | ||
15046 | if (bgp_static->gatewayIp.family == AF_INET | |
15047 | || bgp_static->gatewayIp.family == AF_INET6) | |
15048 | inet_ntop(bgp_static->gatewayIp.family, | |
15049 | &bgp_static->gatewayIp.u.prefix, buf2, | |
15050 | sizeof(buf2)); | |
15051 | vty_out(vty, | |
15052 | " network %s rd %s ethtag %u label %u esi %s gwip %s routermac %s\n", | |
15053 | buf, rdbuf, | |
15054 | p->u.prefix_evpn.prefix_addr.eth_tag, | |
15055 | decode_label(&bgp_static->label), esi_buf, buf2, | |
15056 | macrouter); | |
15057 | ||
15058 | XFREE(MTYPE_TMP, macrouter); | |
15059 | } | |
15060 | } | |
15061 | } | |
15062 | ||
15063 | /* Configuration of static route announcement and aggregate | |
15064 | information. */ | |
15065 | void bgp_config_write_network(struct vty *vty, struct bgp *bgp, afi_t afi, | |
15066 | safi_t safi) | |
15067 | { | |
15068 | struct bgp_dest *dest; | |
15069 | const struct prefix *p; | |
15070 | struct bgp_static *bgp_static; | |
15071 | struct bgp_aggregate *bgp_aggregate; | |
15072 | ||
15073 | if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP)) { | |
15074 | bgp_config_write_network_vpn(vty, bgp, afi, safi); | |
15075 | return; | |
15076 | } | |
15077 | ||
15078 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { | |
15079 | bgp_config_write_network_evpn(vty, bgp, afi, safi); | |
15080 | return; | |
15081 | } | |
15082 | ||
15083 | /* Network configuration. */ | |
15084 | for (dest = bgp_table_top(bgp->route[afi][safi]); dest; | |
15085 | dest = bgp_route_next(dest)) { | |
15086 | bgp_static = bgp_dest_get_bgp_static_info(dest); | |
15087 | if (bgp_static == NULL) | |
15088 | continue; | |
15089 | ||
15090 | p = bgp_dest_get_prefix(dest); | |
15091 | ||
15092 | vty_out(vty, " network %pFX", p); | |
15093 | ||
15094 | if (bgp_static->label_index != BGP_INVALID_LABEL_INDEX) | |
15095 | vty_out(vty, " label-index %u", | |
15096 | bgp_static->label_index); | |
15097 | ||
15098 | if (bgp_static->rmap.name) | |
15099 | vty_out(vty, " route-map %s", bgp_static->rmap.name); | |
15100 | ||
15101 | if (bgp_static->backdoor) | |
15102 | vty_out(vty, " backdoor"); | |
15103 | ||
15104 | vty_out(vty, "\n"); | |
15105 | } | |
15106 | ||
15107 | /* Aggregate-address configuration. */ | |
15108 | for (dest = bgp_table_top(bgp->aggregate[afi][safi]); dest; | |
15109 | dest = bgp_route_next(dest)) { | |
15110 | bgp_aggregate = bgp_dest_get_bgp_aggregate_info(dest); | |
15111 | if (bgp_aggregate == NULL) | |
15112 | continue; | |
15113 | ||
15114 | p = bgp_dest_get_prefix(dest); | |
15115 | ||
15116 | vty_out(vty, " aggregate-address %pFX", p); | |
15117 | ||
15118 | if (bgp_aggregate->as_set) | |
15119 | vty_out(vty, " as-set"); | |
15120 | ||
15121 | if (bgp_aggregate->summary_only) | |
15122 | vty_out(vty, " summary-only"); | |
15123 | ||
15124 | if (bgp_aggregate->rmap.name) | |
15125 | vty_out(vty, " route-map %s", bgp_aggregate->rmap.name); | |
15126 | ||
15127 | if (bgp_aggregate->origin != BGP_ORIGIN_UNSPECIFIED) | |
15128 | vty_out(vty, " origin %s", | |
15129 | bgp_origin2str(bgp_aggregate->origin)); | |
15130 | ||
15131 | if (bgp_aggregate->match_med) | |
15132 | vty_out(vty, " matching-MED-only"); | |
15133 | ||
15134 | if (bgp_aggregate->suppress_map_name) | |
15135 | vty_out(vty, " suppress-map %s", | |
15136 | bgp_aggregate->suppress_map_name); | |
15137 | ||
15138 | vty_out(vty, "\n"); | |
15139 | } | |
15140 | } | |
15141 | ||
15142 | void bgp_config_write_distance(struct vty *vty, struct bgp *bgp, afi_t afi, | |
15143 | safi_t safi) | |
15144 | { | |
15145 | struct bgp_dest *dest; | |
15146 | struct bgp_distance *bdistance; | |
15147 | ||
15148 | /* Distance configuration. */ | |
15149 | if (bgp->distance_ebgp[afi][safi] && bgp->distance_ibgp[afi][safi] | |
15150 | && bgp->distance_local[afi][safi] | |
15151 | && (bgp->distance_ebgp[afi][safi] != ZEBRA_EBGP_DISTANCE_DEFAULT | |
15152 | || bgp->distance_ibgp[afi][safi] != ZEBRA_IBGP_DISTANCE_DEFAULT | |
15153 | || bgp->distance_local[afi][safi] | |
15154 | != ZEBRA_IBGP_DISTANCE_DEFAULT)) { | |
15155 | vty_out(vty, " distance bgp %d %d %d\n", | |
15156 | bgp->distance_ebgp[afi][safi], | |
15157 | bgp->distance_ibgp[afi][safi], | |
15158 | bgp->distance_local[afi][safi]); | |
15159 | } | |
15160 | ||
15161 | for (dest = bgp_table_top(bgp_distance_table[afi][safi]); dest; | |
15162 | dest = bgp_route_next(dest)) { | |
15163 | bdistance = bgp_dest_get_bgp_distance_info(dest); | |
15164 | if (bdistance != NULL) | |
15165 | vty_out(vty, " distance %d %pBD %s\n", | |
15166 | bdistance->distance, dest, | |
15167 | bdistance->access_list ? bdistance->access_list | |
15168 | : ""); | |
15169 | } | |
15170 | } | |
15171 | ||
15172 | /* Allocate routing table structure and install commands. */ | |
15173 | void bgp_route_init(void) | |
15174 | { | |
15175 | afi_t afi; | |
15176 | safi_t safi; | |
15177 | ||
15178 | /* Init BGP distance table. */ | |
15179 | FOREACH_AFI_SAFI (afi, safi) | |
15180 | bgp_distance_table[afi][safi] = bgp_table_init(NULL, afi, safi); | |
15181 | ||
15182 | /* IPv4 BGP commands. */ | |
15183 | install_element(BGP_NODE, &bgp_table_map_cmd); | |
15184 | install_element(BGP_NODE, &bgp_network_cmd); | |
15185 | install_element(BGP_NODE, &no_bgp_table_map_cmd); | |
15186 | ||
15187 | install_element(BGP_NODE, &aggregate_addressv4_cmd); | |
15188 | ||
15189 | /* IPv4 unicast configuration. */ | |
15190 | install_element(BGP_IPV4_NODE, &bgp_table_map_cmd); | |
15191 | install_element(BGP_IPV4_NODE, &bgp_network_cmd); | |
15192 | install_element(BGP_IPV4_NODE, &no_bgp_table_map_cmd); | |
15193 | ||
15194 | install_element(BGP_IPV4_NODE, &aggregate_addressv4_cmd); | |
15195 | ||
15196 | /* IPv4 multicast configuration. */ | |
15197 | install_element(BGP_IPV4M_NODE, &bgp_table_map_cmd); | |
15198 | install_element(BGP_IPV4M_NODE, &bgp_network_cmd); | |
15199 | install_element(BGP_IPV4M_NODE, &no_bgp_table_map_cmd); | |
15200 | install_element(BGP_IPV4M_NODE, &aggregate_addressv4_cmd); | |
15201 | ||
15202 | /* IPv4 labeled-unicast configuration. */ | |
15203 | install_element(BGP_IPV4L_NODE, &bgp_network_cmd); | |
15204 | install_element(BGP_IPV4L_NODE, &aggregate_addressv4_cmd); | |
15205 | ||
15206 | install_element(VIEW_NODE, &show_ip_bgp_instance_all_cmd); | |
15207 | install_element(VIEW_NODE, &show_ip_bgp_afi_safi_statistics_cmd); | |
15208 | install_element(VIEW_NODE, &show_ip_bgp_l2vpn_evpn_statistics_cmd); | |
15209 | install_element(VIEW_NODE, &show_ip_bgp_dampening_params_cmd); | |
15210 | install_element(VIEW_NODE, &show_ip_bgp_cmd); | |
15211 | install_element(VIEW_NODE, &show_ip_bgp_route_cmd); | |
15212 | install_element(VIEW_NODE, &show_ip_bgp_regexp_cmd); | |
15213 | install_element(VIEW_NODE, &show_ip_bgp_statistics_all_cmd); | |
15214 | ||
15215 | install_element(VIEW_NODE, | |
15216 | &show_ip_bgp_instance_neighbor_advertised_route_cmd); | |
15217 | install_element(VIEW_NODE, | |
15218 | &show_ip_bgp_instance_neighbor_bestpath_route_cmd); | |
15219 | install_element(VIEW_NODE, &show_ip_bgp_neighbor_routes_cmd); | |
15220 | install_element(VIEW_NODE, | |
15221 | &show_ip_bgp_neighbor_received_prefix_filter_cmd); | |
15222 | #ifdef KEEP_OLD_VPN_COMMANDS | |
15223 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_route_prefix_cmd); | |
15224 | #endif /* KEEP_OLD_VPN_COMMANDS */ | |
15225 | install_element(VIEW_NODE, &show_bgp_afi_vpn_rd_route_cmd); | |
15226 | install_element(VIEW_NODE, | |
15227 | &show_bgp_l2vpn_evpn_route_prefix_cmd); | |
15228 | ||
15229 | /* BGP dampening clear commands */ | |
15230 | install_element(ENABLE_NODE, &clear_ip_bgp_dampening_cmd); | |
15231 | install_element(ENABLE_NODE, &clear_ip_bgp_dampening_prefix_cmd); | |
15232 | ||
15233 | install_element(ENABLE_NODE, &clear_ip_bgp_dampening_address_cmd); | |
15234 | install_element(ENABLE_NODE, &clear_ip_bgp_dampening_address_mask_cmd); | |
15235 | ||
15236 | /* prefix count */ | |
15237 | install_element(ENABLE_NODE, | |
15238 | &show_ip_bgp_instance_neighbor_prefix_counts_cmd); | |
15239 | #ifdef KEEP_OLD_VPN_COMMANDS | |
15240 | install_element(ENABLE_NODE, | |
15241 | &show_ip_bgp_vpn_neighbor_prefix_counts_cmd); | |
15242 | #endif /* KEEP_OLD_VPN_COMMANDS */ | |
15243 | ||
15244 | /* New config IPv6 BGP commands. */ | |
15245 | install_element(BGP_IPV6_NODE, &bgp_table_map_cmd); | |
15246 | install_element(BGP_IPV6_NODE, &ipv6_bgp_network_cmd); | |
15247 | install_element(BGP_IPV6_NODE, &no_bgp_table_map_cmd); | |
15248 | ||
15249 | install_element(BGP_IPV6_NODE, &aggregate_addressv6_cmd); | |
15250 | ||
15251 | install_element(BGP_IPV6M_NODE, &ipv6_bgp_network_cmd); | |
15252 | ||
15253 | /* IPv6 labeled unicast address family. */ | |
15254 | install_element(BGP_IPV6L_NODE, &ipv6_bgp_network_cmd); | |
15255 | install_element(BGP_IPV6L_NODE, &aggregate_addressv6_cmd); | |
15256 | ||
15257 | install_element(BGP_NODE, &bgp_distance_cmd); | |
15258 | install_element(BGP_NODE, &no_bgp_distance_cmd); | |
15259 | install_element(BGP_NODE, &bgp_distance_source_cmd); | |
15260 | install_element(BGP_NODE, &no_bgp_distance_source_cmd); | |
15261 | install_element(BGP_NODE, &bgp_distance_source_access_list_cmd); | |
15262 | install_element(BGP_NODE, &no_bgp_distance_source_access_list_cmd); | |
15263 | install_element(BGP_IPV4_NODE, &bgp_distance_cmd); | |
15264 | install_element(BGP_IPV4_NODE, &no_bgp_distance_cmd); | |
15265 | install_element(BGP_IPV4_NODE, &bgp_distance_source_cmd); | |
15266 | install_element(BGP_IPV4_NODE, &no_bgp_distance_source_cmd); | |
15267 | install_element(BGP_IPV4_NODE, &bgp_distance_source_access_list_cmd); | |
15268 | install_element(BGP_IPV4_NODE, &no_bgp_distance_source_access_list_cmd); | |
15269 | install_element(BGP_IPV4M_NODE, &bgp_distance_cmd); | |
15270 | install_element(BGP_IPV4M_NODE, &no_bgp_distance_cmd); | |
15271 | install_element(BGP_IPV4M_NODE, &bgp_distance_source_cmd); | |
15272 | install_element(BGP_IPV4M_NODE, &no_bgp_distance_source_cmd); | |
15273 | install_element(BGP_IPV4M_NODE, &bgp_distance_source_access_list_cmd); | |
15274 | install_element(BGP_IPV4M_NODE, | |
15275 | &no_bgp_distance_source_access_list_cmd); | |
15276 | install_element(BGP_IPV6_NODE, &bgp_distance_cmd); | |
15277 | install_element(BGP_IPV6_NODE, &no_bgp_distance_cmd); | |
15278 | install_element(BGP_IPV6_NODE, &ipv6_bgp_distance_source_cmd); | |
15279 | install_element(BGP_IPV6_NODE, &no_ipv6_bgp_distance_source_cmd); | |
15280 | install_element(BGP_IPV6_NODE, | |
15281 | &ipv6_bgp_distance_source_access_list_cmd); | |
15282 | install_element(BGP_IPV6_NODE, | |
15283 | &no_ipv6_bgp_distance_source_access_list_cmd); | |
15284 | install_element(BGP_IPV6M_NODE, &bgp_distance_cmd); | |
15285 | install_element(BGP_IPV6M_NODE, &no_bgp_distance_cmd); | |
15286 | install_element(BGP_IPV6M_NODE, &ipv6_bgp_distance_source_cmd); | |
15287 | install_element(BGP_IPV6M_NODE, &no_ipv6_bgp_distance_source_cmd); | |
15288 | install_element(BGP_IPV6M_NODE, | |
15289 | &ipv6_bgp_distance_source_access_list_cmd); | |
15290 | install_element(BGP_IPV6M_NODE, | |
15291 | &no_ipv6_bgp_distance_source_access_list_cmd); | |
15292 | ||
15293 | /* BGP dampening */ | |
15294 | install_element(BGP_NODE, &bgp_damp_set_cmd); | |
15295 | install_element(BGP_NODE, &bgp_damp_unset_cmd); | |
15296 | install_element(BGP_IPV4_NODE, &bgp_damp_set_cmd); | |
15297 | install_element(BGP_IPV4_NODE, &bgp_damp_unset_cmd); | |
15298 | install_element(BGP_IPV4M_NODE, &bgp_damp_set_cmd); | |
15299 | install_element(BGP_IPV4M_NODE, &bgp_damp_unset_cmd); | |
15300 | install_element(BGP_IPV4L_NODE, &bgp_damp_set_cmd); | |
15301 | install_element(BGP_IPV4L_NODE, &bgp_damp_unset_cmd); | |
15302 | install_element(BGP_IPV6_NODE, &bgp_damp_set_cmd); | |
15303 | install_element(BGP_IPV6_NODE, &bgp_damp_unset_cmd); | |
15304 | install_element(BGP_IPV6M_NODE, &bgp_damp_set_cmd); | |
15305 | install_element(BGP_IPV6M_NODE, &bgp_damp_unset_cmd); | |
15306 | install_element(BGP_IPV6L_NODE, &bgp_damp_set_cmd); | |
15307 | install_element(BGP_IPV6L_NODE, &bgp_damp_unset_cmd); | |
15308 | ||
15309 | /* Large Communities */ | |
15310 | install_element(VIEW_NODE, &show_ip_bgp_large_community_list_cmd); | |
15311 | install_element(VIEW_NODE, &show_ip_bgp_large_community_cmd); | |
15312 | ||
15313 | /* show bgp ipv4 flowspec detailed */ | |
15314 | install_element(VIEW_NODE, &show_ip_bgp_flowspec_routes_detailed_cmd); | |
15315 | ||
15316 | install_element(VIEW_NODE, &show_bgp_listeners_cmd); | |
15317 | install_element(VIEW_NODE, &show_bgp_peerhash_cmd); | |
15318 | } | |
15319 | ||
15320 | void bgp_route_finish(void) | |
15321 | { | |
15322 | afi_t afi; | |
15323 | safi_t safi; | |
15324 | ||
15325 | FOREACH_AFI_SAFI (afi, safi) { | |
15326 | bgp_table_unlock(bgp_distance_table[afi][safi]); | |
15327 | bgp_distance_table[afi][safi] = NULL; | |
15328 | } | |
15329 | } |