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718e3744 | 1 | /* MPLS-VPN |
896014f4 DL |
2 | * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
718e3744 | 20 | |
21 | #include <zebra.h> | |
22 | ||
23 | #include "command.h" | |
24 | #include "prefix.h" | |
25 | #include "log.h" | |
26 | #include "memory.h" | |
27 | #include "stream.h" | |
3f9c7369 | 28 | #include "queue.h" |
039f3a34 | 29 | #include "filter.h" |
ddb5b488 | 30 | #include "mpls.h" |
b9c7bc5a PZ |
31 | #include "json.h" |
32 | #include "zclient.h" | |
9bedbb1e | 33 | |
718e3744 | 34 | #include "bgpd/bgpd.h" |
ddb5b488 | 35 | #include "bgpd/bgp_debug.h" |
14454c9f | 36 | #include "bgpd/bgp_errors.h" |
718e3744 | 37 | #include "bgpd/bgp_table.h" |
38 | #include "bgpd/bgp_route.h" | |
39 | #include "bgpd/bgp_attr.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
718e3744 | 41 | #include "bgpd/bgp_mplsvpn.h" |
48a5452b | 42 | #include "bgpd/bgp_packet.h" |
3f227172 | 43 | #include "bgpd/bgp_vty.h" |
784d3a42 | 44 | #include "bgpd/bgp_vpn.h" |
ddb5b488 PZ |
45 | #include "bgpd/bgp_ecommunity.h" |
46 | #include "bgpd/bgp_zebra.h" | |
47 | #include "bgpd/bgp_nexthop.h" | |
960035b2 | 48 | #include "bgpd/bgp_nht.h" |
718e3744 | 49 | |
65efcfce | 50 | #if ENABLE_BGP_VNC |
f8b6f499 | 51 | #include "bgpd/rfapi/rfapi_backend.h" |
65efcfce LB |
52 | #endif |
53 | ||
ddb5b488 PZ |
54 | /* |
55 | * Definitions and external declarations. | |
56 | */ | |
57 | extern struct zclient *zclient; | |
58 | ||
d62a17ae | 59 | extern int argv_find_and_parse_vpnvx(struct cmd_token **argv, int argc, |
60 | int *index, afi_t *afi) | |
3f227172 | 61 | { |
d62a17ae | 62 | int ret = 0; |
63 | if (argv_find(argv, argc, "vpnv4", index)) { | |
64 | ret = 1; | |
65 | if (afi) | |
66 | *afi = AFI_IP; | |
67 | } else if (argv_find(argv, argc, "vpnv6", index)) { | |
68 | ret = 1; | |
69 | if (afi) | |
70 | *afi = AFI_IP6; | |
71 | } | |
72 | return ret; | |
3f227172 PG |
73 | } |
74 | ||
d7c0a89a | 75 | uint32_t decode_label(mpls_label_t *label_pnt) |
718e3744 | 76 | { |
d7c0a89a QY |
77 | uint32_t l; |
78 | uint8_t *pnt = (uint8_t *)label_pnt; | |
718e3744 | 79 | |
d7c0a89a QY |
80 | l = ((uint32_t)*pnt++ << 12); |
81 | l |= (uint32_t)*pnt++ << 4; | |
82 | l |= (uint32_t)((*pnt & 0xf0) >> 4); | |
d62a17ae | 83 | return l; |
718e3744 | 84 | } |
85 | ||
d62a17ae | 86 | void encode_label(mpls_label_t label, mpls_label_t *label_pnt) |
65efcfce | 87 | { |
d7c0a89a | 88 | uint8_t *pnt = (uint8_t *)label_pnt; |
d62a17ae | 89 | if (pnt == NULL) |
90 | return; | |
13b7e7f0 DS |
91 | if (label == BGP_PREVENT_VRF_2_VRF_LEAK) { |
92 | *label_pnt = label; | |
93 | return; | |
94 | } | |
d62a17ae | 95 | *pnt++ = (label >> 12) & 0xff; |
96 | *pnt++ = (label >> 4) & 0xff; | |
97 | *pnt++ = ((label << 4) + 1) & 0xff; /* S=1 */ | |
65efcfce LB |
98 | } |
99 | ||
d62a17ae | 100 | int bgp_nlri_parse_vpn(struct peer *peer, struct attr *attr, |
101 | struct bgp_nlri *packet) | |
718e3744 | 102 | { |
d7c0a89a QY |
103 | uint8_t *pnt; |
104 | uint8_t *lim; | |
d62a17ae | 105 | struct prefix p; |
106 | int psize = 0; | |
107 | int prefixlen; | |
d7c0a89a | 108 | uint16_t type; |
d62a17ae | 109 | struct rd_as rd_as; |
110 | struct rd_ip rd_ip; | |
111 | struct prefix_rd prd; | |
ddb5b488 | 112 | mpls_label_t label = {0}; |
d62a17ae | 113 | afi_t afi; |
114 | safi_t safi; | |
115 | int addpath_encoded; | |
d7c0a89a | 116 | uint32_t addpath_id; |
d62a17ae | 117 | |
d62a17ae | 118 | /* Make prefix_rd */ |
119 | prd.family = AF_UNSPEC; | |
120 | prd.prefixlen = 64; | |
121 | ||
122 | pnt = packet->nlri; | |
123 | lim = pnt + packet->length; | |
124 | afi = packet->afi; | |
125 | safi = packet->safi; | |
126 | addpath_id = 0; | |
127 | ||
128 | addpath_encoded = | |
129 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
130 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
131 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
718e3744 | 132 | |
50905aa2 | 133 | #define VPN_PREFIXLEN_MIN_BYTES (3 + 8) /* label + RD */ |
d62a17ae | 134 | for (; pnt < lim; pnt += psize) { |
135 | /* Clear prefix structure. */ | |
136 | memset(&p, 0, sizeof(struct prefix)); | |
137 | ||
138 | if (addpath_encoded) { | |
139 | ||
140 | /* When packet overflow occurs return immediately. */ | |
141 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
142 | return -1; | |
143 | ||
144 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
145 | pnt += BGP_ADDPATH_ID_LEN; | |
146 | } | |
147 | ||
148 | /* Fetch prefix length. */ | |
149 | prefixlen = *pnt++; | |
150 | p.family = afi2family(packet->afi); | |
151 | psize = PSIZE(prefixlen); | |
152 | ||
153 | if (prefixlen < VPN_PREFIXLEN_MIN_BYTES * 8) { | |
af4c2728 | 154 | flog_err( |
14454c9f | 155 | BGP_ERR_UPDATE_RCV, |
d62a17ae | 156 | "%s [Error] Update packet error / VPN (prefix length %d less than VPN min length)", |
157 | peer->host, prefixlen); | |
158 | return -1; | |
159 | } | |
160 | ||
161 | /* sanity check against packet data */ | |
162 | if ((pnt + psize) > lim) { | |
af4c2728 | 163 | flog_err( |
14454c9f | 164 | BGP_ERR_UPDATE_RCV, |
d62a17ae | 165 | "%s [Error] Update packet error / VPN (prefix length %d exceeds packet size %u)", |
166 | peer->host, prefixlen, (uint)(lim - pnt)); | |
167 | return -1; | |
168 | } | |
169 | ||
170 | /* sanity check against storage for the IP address portion */ | |
171 | if ((psize - VPN_PREFIXLEN_MIN_BYTES) > (ssize_t)sizeof(p.u)) { | |
af4c2728 | 172 | flog_err( |
14454c9f | 173 | BGP_ERR_UPDATE_RCV, |
d62a17ae | 174 | "%s [Error] Update packet error / VPN (psize %d exceeds storage size %zu)", |
175 | peer->host, | |
176 | prefixlen - VPN_PREFIXLEN_MIN_BYTES * 8, | |
177 | sizeof(p.u)); | |
178 | return -1; | |
179 | } | |
180 | ||
181 | /* Sanity check against max bitlen of the address family */ | |
182 | if ((psize - VPN_PREFIXLEN_MIN_BYTES) > prefix_blen(&p)) { | |
af4c2728 | 183 | flog_err( |
14454c9f | 184 | BGP_ERR_UPDATE_RCV, |
d62a17ae | 185 | "%s [Error] Update packet error / VPN (psize %d exceeds family (%u) max byte len %u)", |
186 | peer->host, | |
187 | prefixlen - VPN_PREFIXLEN_MIN_BYTES * 8, | |
188 | p.family, prefix_blen(&p)); | |
189 | return -1; | |
190 | } | |
191 | ||
192 | /* Copy label to prefix. */ | |
193 | memcpy(&label, pnt, BGP_LABEL_BYTES); | |
194 | bgp_set_valid_label(&label); | |
195 | ||
196 | /* Copy routing distinguisher to rd. */ | |
197 | memcpy(&prd.val, pnt + BGP_LABEL_BYTES, 8); | |
198 | ||
199 | /* Decode RD type. */ | |
200 | type = decode_rd_type(pnt + BGP_LABEL_BYTES); | |
201 | ||
202 | switch (type) { | |
203 | case RD_TYPE_AS: | |
204 | decode_rd_as(pnt + 5, &rd_as); | |
205 | break; | |
206 | ||
207 | case RD_TYPE_AS4: | |
208 | decode_rd_as4(pnt + 5, &rd_as); | |
209 | break; | |
210 | ||
211 | case RD_TYPE_IP: | |
212 | decode_rd_ip(pnt + 5, &rd_ip); | |
213 | break; | |
fe770c88 | 214 | |
65efcfce | 215 | #if ENABLE_BGP_VNC |
d62a17ae | 216 | case RD_TYPE_VNC_ETH: |
217 | break; | |
65efcfce LB |
218 | #endif |
219 | ||
d62a17ae | 220 | default: |
af4c2728 | 221 | flog_err(BGP_ERR_UPDATE_RCV, "Unknown RD type %d", |
14454c9f | 222 | type); |
d62a17ae | 223 | break; /* just report */ |
224 | } | |
225 | ||
226 | p.prefixlen = | |
227 | prefixlen | |
228 | - VPN_PREFIXLEN_MIN_BYTES * 8; /* exclude label & RD */ | |
a85297a7 | 229 | memcpy(p.u.val, pnt + VPN_PREFIXLEN_MIN_BYTES, |
d62a17ae | 230 | psize - VPN_PREFIXLEN_MIN_BYTES); |
231 | ||
232 | if (attr) { | |
233 | bgp_update(peer, &p, addpath_id, attr, packet->afi, | |
234 | SAFI_MPLS_VPN, ZEBRA_ROUTE_BGP, | |
b57ba6d2 | 235 | BGP_ROUTE_NORMAL, &prd, &label, 1, 0, NULL); |
d62a17ae | 236 | } else { |
237 | bgp_withdraw(peer, &p, addpath_id, attr, packet->afi, | |
238 | SAFI_MPLS_VPN, ZEBRA_ROUTE_BGP, | |
b57ba6d2 | 239 | BGP_ROUTE_NORMAL, &prd, &label, 1, NULL); |
d62a17ae | 240 | } |
241 | } | |
242 | /* Packet length consistency check. */ | |
243 | if (pnt != lim) { | |
af4c2728 | 244 | flog_err( |
14454c9f | 245 | BGP_ERR_UPDATE_RCV, |
d62a17ae | 246 | "%s [Error] Update packet error / VPN (%zu data remaining after parsing)", |
247 | peer->host, lim - pnt); | |
248 | return -1; | |
249 | } | |
250 | ||
251 | return 0; | |
50905aa2 | 252 | #undef VPN_PREFIXLEN_MIN_BYTES |
718e3744 | 253 | } |
254 | ||
ddb5b488 PZ |
255 | /* |
256 | * This function informs zebra of the label this vrf sets on routes | |
257 | * leaked to VPN. Zebra should install this label in the kernel with | |
258 | * an action of "pop label and then use this vrf's IP FIB to route the PDU." | |
259 | * | |
260 | * Sending this vrf-label association is qualified by a) whether vrf->vpn | |
261 | * exporting is active ("export vpn" is enabled, vpn-policy RD and RT list | |
262 | * are set) and b) whether vpn-policy label is set. | |
263 | * | |
264 | * If any of these conditions do not hold, then we send MPLS_LABEL_NONE | |
265 | * for this vrf, which zebra interprets to mean "delete this vrf-label | |
266 | * association." | |
267 | */ | |
268 | void vpn_leak_zebra_vrf_label_update(struct bgp *bgp, afi_t afi) | |
269 | { | |
270 | mpls_label_t label = MPLS_LABEL_NONE; | |
ddb5b488 PZ |
271 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); |
272 | ||
ddb5b488 PZ |
273 | if (bgp->vrf_id == VRF_UNKNOWN) { |
274 | if (debug) { | |
275 | zlog_debug( | |
276 | "%s: vrf %s: afi %s: vrf_id not set, " | |
277 | "can't set zebra vrf label", | |
960035b2 | 278 | __func__, bgp->name_pretty, afi2str(afi)); |
ddb5b488 PZ |
279 | } |
280 | return; | |
281 | } | |
282 | ||
283 | if (vpn_leak_to_vpn_active(bgp, afi, NULL)) { | |
284 | label = bgp->vpn_policy[afi].tovpn_label; | |
285 | } | |
286 | ||
287 | if (debug) { | |
288 | zlog_debug("%s: vrf %s: afi %s: setting label %d for vrf id %d", | |
960035b2 PZ |
289 | __func__, bgp->name_pretty, afi2str(afi), label, |
290 | bgp->vrf_id); | |
ddb5b488 PZ |
291 | } |
292 | ||
293 | zclient_send_vrf_label(zclient, bgp->vrf_id, afi, label, ZEBRA_LSP_BGP); | |
294 | bgp->vpn_policy[afi].tovpn_zebra_vrf_label_last_sent = label; | |
295 | } | |
296 | ||
297 | /* | |
298 | * If zebra tells us vrf has become unconfigured, tell zebra not to | |
299 | * use this label to forward to the vrf anymore | |
300 | */ | |
301 | void vpn_leak_zebra_vrf_label_withdraw(struct bgp *bgp, afi_t afi) | |
302 | { | |
303 | mpls_label_t label = MPLS_LABEL_NONE; | |
304 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); | |
305 | ||
306 | if (bgp->vrf_id == VRF_UNKNOWN) { | |
307 | if (debug) { | |
308 | zlog_debug( | |
309 | "%s: vrf_id not set, can't delete zebra vrf label", | |
310 | __func__); | |
311 | } | |
312 | return; | |
313 | } | |
314 | ||
315 | if (debug) { | |
316 | zlog_debug("%s: deleting label for vrf %s (id=%d)", __func__, | |
960035b2 | 317 | bgp->name_pretty, bgp->vrf_id); |
ddb5b488 PZ |
318 | } |
319 | ||
320 | zclient_send_vrf_label(zclient, bgp->vrf_id, afi, label, ZEBRA_LSP_BGP); | |
321 | bgp->vpn_policy[afi].tovpn_zebra_vrf_label_last_sent = label; | |
322 | } | |
323 | ||
e70e9f8e PZ |
324 | int vpn_leak_label_callback( |
325 | mpls_label_t label, | |
326 | void *labelid, | |
327 | bool allocated) | |
328 | { | |
329 | struct vpn_policy *vp = (struct vpn_policy *)labelid; | |
330 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); | |
331 | ||
332 | if (debug) | |
333 | zlog_debug("%s: label=%u, allocated=%d", | |
334 | __func__, label, allocated); | |
335 | ||
336 | if (!allocated) { | |
337 | /* | |
338 | * previously-allocated label is now invalid | |
339 | */ | |
340 | if (CHECK_FLAG(vp->flags, BGP_VPN_POLICY_TOVPN_LABEL_AUTO) && | |
341 | (vp->tovpn_label != MPLS_LABEL_NONE)) { | |
342 | ||
343 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, | |
344 | vp->afi, bgp_get_default(), vp->bgp); | |
345 | vp->tovpn_label = MPLS_LABEL_NONE; | |
346 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, | |
347 | vp->afi, bgp_get_default(), vp->bgp); | |
348 | } | |
349 | return 0; | |
350 | } | |
351 | ||
352 | /* | |
353 | * New label allocation | |
354 | */ | |
355 | if (!CHECK_FLAG(vp->flags, BGP_VPN_POLICY_TOVPN_LABEL_AUTO)) { | |
356 | ||
357 | /* | |
358 | * not currently configured for auto label, reject allocation | |
359 | */ | |
360 | return -1; | |
361 | } | |
362 | ||
363 | if (vp->tovpn_label != MPLS_LABEL_NONE) { | |
364 | if (label == vp->tovpn_label) { | |
365 | /* already have same label, accept but do nothing */ | |
366 | return 0; | |
367 | } | |
368 | /* Shouldn't happen: different label allocation */ | |
af4c2728 | 369 | flog_err(BGP_ERR_LABEL, |
14454c9f DS |
370 | "%s: %s had label %u but got new assignment %u", |
371 | __func__, vp->bgp->name_pretty, vp->tovpn_label, | |
372 | label); | |
e70e9f8e PZ |
373 | /* use new one */ |
374 | } | |
375 | ||
376 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, | |
377 | vp->afi, bgp_get_default(), vp->bgp); | |
378 | vp->tovpn_label = label; | |
379 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, | |
380 | vp->afi, bgp_get_default(), vp->bgp); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
ddb5b488 PZ |
385 | static int ecom_intersect(struct ecommunity *e1, struct ecommunity *e2) |
386 | { | |
387 | int i; | |
388 | int j; | |
389 | ||
390 | if (!e1 || !e2) | |
391 | return 0; | |
392 | ||
393 | for (i = 0; i < e1->size; ++i) { | |
394 | for (j = 0; j < e2->size; ++j) { | |
395 | if (!memcmp(e1->val + (i * ECOMMUNITY_SIZE), | |
396 | e2->val + (j * ECOMMUNITY_SIZE), | |
397 | ECOMMUNITY_SIZE)) { | |
398 | ||
399 | return 1; | |
400 | } | |
401 | } | |
402 | } | |
403 | return 0; | |
404 | } | |
405 | ||
e37fb4bf PZ |
406 | static bool labels_same(struct bgp_info *bi, mpls_label_t *label, uint32_t n) |
407 | { | |
408 | uint32_t i; | |
409 | ||
410 | if (!bi->extra) { | |
411 | if (!n) | |
412 | return true; | |
413 | else | |
414 | return false; | |
415 | } | |
416 | ||
417 | if (n != bi->extra->num_labels) | |
418 | return false; | |
419 | ||
420 | for (i = 0; i < n; ++i) { | |
421 | if (label[i] != bi->extra->label[i]) | |
422 | return false; | |
423 | } | |
424 | return true; | |
425 | } | |
426 | ||
427 | /* | |
428 | * make encoded route labels match specified encoded label set | |
429 | */ | |
430 | static void setlabels( | |
431 | struct bgp_info *bi, | |
432 | mpls_label_t *label, /* array of labels */ | |
433 | uint32_t num_labels) | |
434 | { | |
435 | if (num_labels) | |
436 | assert(label); | |
437 | assert(num_labels <= BGP_MAX_LABELS); | |
438 | ||
439 | if (!num_labels) { | |
440 | if (bi->extra) | |
441 | bi->extra->num_labels = 0; | |
442 | return; | |
443 | } | |
444 | ||
445 | struct bgp_info_extra *extra = bgp_info_extra_get(bi); | |
446 | uint32_t i; | |
447 | ||
448 | for (i = 0; i < num_labels; ++i) { | |
449 | extra->label[i] = label[i]; | |
450 | if (!bgp_is_valid_label(&label[i])) { | |
451 | bgp_set_valid_label(&extra->label[i]); | |
452 | } | |
453 | } | |
454 | extra->num_labels = num_labels; | |
455 | } | |
456 | ||
ddb5b488 PZ |
457 | /* |
458 | * returns pointer to new bgp_info upon success | |
459 | */ | |
460 | static struct bgp_info * | |
960035b2 PZ |
461 | leak_update( |
462 | struct bgp *bgp, /* destination bgp instance */ | |
463 | struct bgp_node *bn, | |
464 | struct attr *new_attr, /* already interned */ | |
465 | afi_t afi, | |
466 | safi_t safi, | |
467 | struct bgp_info *source_bi, | |
468 | mpls_label_t *label, | |
e37fb4bf | 469 | uint32_t num_labels, |
960035b2 PZ |
470 | void *parent, |
471 | struct bgp *bgp_orig, | |
472 | struct prefix *nexthop_orig, | |
473 | int nexthop_self_flag, | |
474 | int debug) | |
ddb5b488 PZ |
475 | { |
476 | struct prefix *p = &bn->p; | |
477 | struct bgp_info *bi; | |
f46d45c1 | 478 | struct bgp_info *bi_ultimate; |
ddb5b488 PZ |
479 | struct bgp_info *new; |
480 | char buf_prefix[PREFIX_STRLEN]; | |
ddb5b488 PZ |
481 | |
482 | if (debug) { | |
483 | prefix2str(&bn->p, buf_prefix, sizeof(buf_prefix)); | |
960035b2 PZ |
484 | zlog_debug("%s: entry: leak-to=%s, p=%s, type=%d, sub_type=%d", |
485 | __func__, bgp->name_pretty, buf_prefix, | |
486 | source_bi->type, source_bi->sub_type); | |
ddb5b488 PZ |
487 | } |
488 | ||
f46d45c1 PZ |
489 | /* |
490 | * Routes that are redistributed into BGP from zebra do not get | |
491 | * nexthop tracking. However, if those routes are subsequently | |
492 | * imported to other RIBs within BGP, the leaked routes do not | |
493 | * carry the original BGP_ROUTE_REDISTRIBUTE sub_type. Therefore, | |
494 | * in order to determine if the route we are currently leaking | |
495 | * should have nexthop tracking, we must find the ultimate | |
496 | * parent so we can check its sub_type. | |
497 | * | |
498 | * As of now, source_bi may at most be a second-generation route | |
499 | * (only one hop back to ultimate parent for vrf-vpn-vrf scheme). | |
500 | * Using a loop here supports more complex intra-bgp import-export | |
501 | * schemes that could be implemented in the future. | |
3bd70bf8 | 502 | * |
f46d45c1 PZ |
503 | */ |
504 | for (bi_ultimate = source_bi; | |
505 | bi_ultimate->extra && bi_ultimate->extra->parent; | |
506 | bi_ultimate = bi_ultimate->extra->parent) | |
507 | ; | |
508 | ||
ddb5b488 PZ |
509 | /* |
510 | * match parent | |
511 | */ | |
512 | for (bi = bn->info; bi; bi = bi->next) { | |
513 | if (bi->extra && bi->extra->parent == parent) | |
514 | break; | |
515 | } | |
516 | ||
517 | if (bi) { | |
e37fb4bf PZ |
518 | bool labelssame = labels_same(bi, label, num_labels); |
519 | ||
ddb5b488 | 520 | if (attrhash_cmp(bi->attr, new_attr) |
e37fb4bf | 521 | && labelssame |
ddb5b488 PZ |
522 | && !CHECK_FLAG(bi->flags, BGP_INFO_REMOVED)) { |
523 | ||
524 | bgp_attr_unintern(&new_attr); | |
525 | if (debug) | |
526 | zlog_debug( | |
527 | "%s: ->%s: %s: Found route, no change", | |
960035b2 | 528 | __func__, bgp->name_pretty, |
ddb5b488 PZ |
529 | buf_prefix); |
530 | return NULL; | |
531 | } | |
532 | ||
533 | /* attr is changed */ | |
534 | bgp_info_set_flag(bn, bi, BGP_INFO_ATTR_CHANGED); | |
535 | ||
536 | /* Rewrite BGP route information. */ | |
537 | if (CHECK_FLAG(bi->flags, BGP_INFO_REMOVED)) | |
538 | bgp_info_restore(bn, bi); | |
539 | else | |
540 | bgp_aggregate_decrement(bgp, p, bi, afi, safi); | |
541 | bgp_attr_unintern(&bi->attr); | |
542 | bi->attr = new_attr; | |
543 | bi->uptime = bgp_clock(); | |
544 | ||
e37fb4bf PZ |
545 | /* |
546 | * rewrite labels | |
547 | */ | |
548 | if (!labelssame) | |
549 | setlabels(bi, label, num_labels); | |
550 | ||
960035b2 PZ |
551 | if (nexthop_self_flag) |
552 | bgp_info_set_flag(bn, bi, BGP_INFO_ANNC_NH_SELF); | |
553 | ||
554 | struct bgp *bgp_nexthop = bgp; | |
555 | int nh_valid; | |
556 | ||
557 | if (bi->extra && bi->extra->bgp_orig) | |
558 | bgp_nexthop = bi->extra->bgp_orig; | |
559 | ||
560 | /* No nexthop tracking for redistributed routes */ | |
f46d45c1 | 561 | if (bi_ultimate->sub_type == BGP_ROUTE_REDISTRIBUTE) |
960035b2 PZ |
562 | nh_valid = 1; |
563 | else | |
564 | /* | |
565 | * TBD do we need to do anything about the | |
566 | * 'connected' parameter? | |
567 | */ | |
568 | nh_valid = bgp_find_or_add_nexthop( | |
569 | bgp, bgp_nexthop, | |
570 | afi, bi, NULL, 0); | |
571 | ||
572 | if (debug) | |
573 | zlog_debug("%s: nexthop is %svalid (in vrf %s)", | |
574 | __func__, (nh_valid ? "" : "not "), | |
575 | bgp_nexthop->name_pretty); | |
576 | ||
577 | if (nh_valid) | |
578 | bgp_info_set_flag(bn, bi, BGP_INFO_VALID); | |
579 | ||
ddb5b488 PZ |
580 | /* Process change. */ |
581 | bgp_aggregate_increment(bgp, p, bi, afi, safi); | |
582 | bgp_process(bgp, bn, afi, safi); | |
583 | bgp_unlock_node(bn); | |
584 | ||
585 | if (debug) | |
586 | zlog_debug("%s: ->%s: %s Found route, changed attr", | |
960035b2 | 587 | __func__, bgp->name_pretty, buf_prefix); |
ddb5b488 | 588 | |
e504cf3b | 589 | return bi; |
ddb5b488 PZ |
590 | } |
591 | ||
960035b2 PZ |
592 | new = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_IMPORTED, 0, |
593 | bgp->peer_self, new_attr, bn); | |
594 | ||
595 | if (nexthop_self_flag) | |
596 | bgp_info_set_flag(bn, new, BGP_INFO_ANNC_NH_SELF); | |
ddb5b488 | 597 | |
4b85140f DS |
598 | bgp_info_extra_get(new); |
599 | ||
e37fb4bf PZ |
600 | if (num_labels) |
601 | setlabels(new, label, num_labels); | |
602 | ||
528cd74f | 603 | new->extra->parent = bgp_info_lock(parent); |
7c82b312 | 604 | bgp_lock_node((struct bgp_node *)((struct bgp_info *)parent)->net); |
ddb5b488 | 605 | if (bgp_orig) |
21d88ef7 | 606 | new->extra->bgp_orig = bgp_lock(bgp_orig); |
ddb5b488 PZ |
607 | if (nexthop_orig) |
608 | new->extra->nexthop_orig = *nexthop_orig; | |
609 | ||
960035b2 PZ |
610 | /* |
611 | * nexthop tracking for unicast routes | |
612 | */ | |
613 | struct bgp *bgp_nexthop = bgp; | |
614 | int nh_valid; | |
615 | ||
4b85140f | 616 | if (new->extra->bgp_orig) |
960035b2 PZ |
617 | bgp_nexthop = new->extra->bgp_orig; |
618 | ||
619 | /* | |
620 | * No nexthop tracking for redistributed routes because | |
621 | * their originating protocols will do the tracking and | |
622 | * withdraw those routes if the nexthops become unreachable | |
623 | */ | |
f46d45c1 | 624 | if (bi_ultimate->sub_type == BGP_ROUTE_REDISTRIBUTE) |
960035b2 PZ |
625 | nh_valid = 1; |
626 | else | |
627 | /* | |
628 | * TBD do we need to do anything about the | |
629 | * 'connected' parameter? | |
630 | */ | |
631 | nh_valid = bgp_find_or_add_nexthop(bgp, bgp_nexthop, | |
632 | afi, new, NULL, 0); | |
633 | ||
634 | if (debug) | |
635 | zlog_debug("%s: nexthop is %svalid (in vrf %s)", | |
636 | __func__, (nh_valid ? "" : "not "), | |
637 | bgp_nexthop->name_pretty); | |
638 | if (nh_valid) | |
639 | bgp_info_set_flag(bn, new, BGP_INFO_VALID); | |
640 | ||
ddb5b488 PZ |
641 | bgp_aggregate_increment(bgp, p, new, afi, safi); |
642 | bgp_info_add(bn, new); | |
643 | ||
644 | bgp_unlock_node(bn); | |
645 | bgp_process(bgp, bn, afi, safi); | |
646 | ||
647 | if (debug) | |
648 | zlog_debug("%s: ->%s: %s: Added new route", __func__, | |
960035b2 | 649 | bgp->name_pretty, buf_prefix); |
ddb5b488 PZ |
650 | |
651 | return new; | |
652 | } | |
653 | ||
654 | /* cf vnc_import_bgp_add_route_mode_nvegroup() and add_vnc_route() */ | |
655 | void vpn_leak_from_vrf_update(struct bgp *bgp_vpn, /* to */ | |
656 | struct bgp *bgp_vrf, /* from */ | |
657 | struct bgp_info *info_vrf) /* route */ | |
658 | { | |
659 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
660 | struct prefix *p = &info_vrf->net->p; | |
661 | afi_t afi = family2afi(p->family); | |
662 | struct attr static_attr = {0}; | |
663 | struct attr *new_attr = NULL; | |
664 | safi_t safi = SAFI_MPLS_VPN; | |
665 | mpls_label_t label_val; | |
666 | mpls_label_t label; | |
667 | struct bgp_node *bn; | |
668 | const char *debugmsg; | |
960035b2 PZ |
669 | int nexthop_self_flag = 0; |
670 | ||
671 | if (debug) | |
672 | zlog_debug("%s: from vrf %s", __func__, bgp_vrf->name_pretty); | |
ddb5b488 | 673 | |
c8f57349 DS |
674 | if (debug && info_vrf->attr->ecommunity) { |
675 | char *s = ecommunity_ecom2str(info_vrf->attr->ecommunity, | |
676 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 677 | |
12a844a5 DS |
678 | zlog_debug("%s: %s info_vrf->type=%d, EC{%s}", __func__, |
679 | bgp_vrf->name, info_vrf->type, s); | |
c8f57349 | 680 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
681 | } |
682 | ||
683 | if (!bgp_vpn) | |
684 | return; | |
685 | ||
686 | if (!afi) { | |
687 | if (debug) | |
688 | zlog_debug("%s: can't get afi of prefix", __func__); | |
689 | return; | |
690 | } | |
691 | ||
cc5a6ddd | 692 | /* loop check - should not be an imported route. */ |
693 | if (info_vrf->extra && info_vrf->extra->bgp_orig) | |
ddb5b488 PZ |
694 | return; |
695 | ||
696 | ||
697 | if (!vpn_leak_to_vpn_active(bgp_vrf, afi, &debugmsg)) { | |
698 | if (debug) | |
12a844a5 DS |
699 | zlog_debug("%s: %s skipping: %s", __func__, |
700 | bgp_vrf->name, debugmsg); | |
ddb5b488 PZ |
701 | return; |
702 | } | |
703 | ||
704 | bgp_attr_dup(&static_attr, info_vrf->attr); /* shallow copy */ | |
705 | ||
706 | /* | |
707 | * route map handling | |
708 | */ | |
709 | if (bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN]) { | |
710 | struct bgp_info info; | |
711 | route_map_result_t ret; | |
712 | ||
713 | memset(&info, 0, sizeof(info)); | |
714 | info.peer = bgp_vpn->peer_self; | |
715 | info.attr = &static_attr; | |
716 | ret = route_map_apply( | |
717 | bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN], | |
718 | p, RMAP_BGP, &info); | |
719 | if (RMAP_DENYMATCH == ret) { | |
720 | bgp_attr_flush(&static_attr); /* free any added parts */ | |
721 | if (debug) | |
722 | zlog_debug( | |
723 | "%s: vrf %s route map \"%s\" says DENY, returning", | |
960035b2 | 724 | __func__, bgp_vrf->name_pretty, |
ddb5b488 PZ |
725 | bgp_vrf->vpn_policy[afi] |
726 | .rmap[BGP_VPN_POLICY_DIR_TOVPN] | |
727 | ->name); | |
728 | return; | |
729 | } | |
730 | } | |
731 | ||
c8f57349 DS |
732 | if (debug && static_attr.ecommunity) { |
733 | char *s = ecommunity_ecom2str(static_attr.ecommunity, | |
734 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 735 | |
ddb5b488 PZ |
736 | zlog_debug("%s: post route map static_attr.ecommunity{%s}", |
737 | __func__, s); | |
c8f57349 | 738 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
739 | } |
740 | ||
741 | /* | |
742 | * Add the vpn-policy rt-list | |
743 | */ | |
744 | struct ecommunity *old_ecom; | |
745 | struct ecommunity *new_ecom; | |
746 | ||
747 | old_ecom = static_attr.ecommunity; | |
748 | if (old_ecom) { | |
749 | new_ecom = ecommunity_merge( | |
750 | ecommunity_dup(old_ecom), | |
751 | bgp_vrf->vpn_policy[afi] | |
752 | .rtlist[BGP_VPN_POLICY_DIR_TOVPN]); | |
753 | if (!old_ecom->refcnt) | |
754 | ecommunity_free(&old_ecom); | |
755 | } else { | |
756 | new_ecom = ecommunity_dup( | |
757 | bgp_vrf->vpn_policy[afi] | |
758 | .rtlist[BGP_VPN_POLICY_DIR_TOVPN]); | |
759 | } | |
760 | static_attr.ecommunity = new_ecom; | |
761 | SET_FLAG(static_attr.flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)); | |
762 | ||
c8f57349 DS |
763 | if (debug && static_attr.ecommunity) { |
764 | char *s = ecommunity_ecom2str(static_attr.ecommunity, | |
765 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 766 | |
ddb5b488 PZ |
767 | zlog_debug("%s: post merge static_attr.ecommunity{%s}", |
768 | __func__, s); | |
c8f57349 | 769 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
770 | } |
771 | ||
772 | /* Nexthop */ | |
773 | /* if policy nexthop not set, use 0 */ | |
774 | if (CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags, | |
775 | BGP_VPN_POLICY_TOVPN_NEXTHOP_SET)) { | |
ddb5b488 PZ |
776 | struct prefix *nexthop = |
777 | &bgp_vrf->vpn_policy[afi].tovpn_nexthop; | |
12a844a5 | 778 | |
ddb5b488 PZ |
779 | switch (nexthop->family) { |
780 | case AF_INET: | |
781 | /* prevent mp_nexthop_global_in <- self in bgp_route.c | |
782 | */ | |
783 | static_attr.nexthop.s_addr = nexthop->u.prefix4.s_addr; | |
784 | ||
785 | static_attr.mp_nexthop_global_in = nexthop->u.prefix4; | |
786 | static_attr.mp_nexthop_len = 4; | |
787 | break; | |
788 | ||
789 | case AF_INET6: | |
790 | static_attr.mp_nexthop_global = nexthop->u.prefix6; | |
791 | static_attr.mp_nexthop_len = 16; | |
792 | break; | |
793 | ||
794 | default: | |
795 | assert(0); | |
796 | } | |
797 | } else { | |
12a844a5 DS |
798 | if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST], |
799 | BGP_CONFIG_VRF_TO_VRF_EXPORT)) { | |
800 | if (afi == AFI_IP) { | |
020a3f60 DS |
801 | /* |
802 | * For ipv4, copy to multiprotocol | |
803 | * nexthop field | |
804 | */ | |
805 | static_attr.mp_nexthop_global_in = | |
806 | static_attr.nexthop; | |
12a844a5 | 807 | static_attr.mp_nexthop_len = 4; |
020a3f60 DS |
808 | /* |
809 | * XXX Leave static_attr.nexthop | |
810 | * intact for NHT | |
811 | */ | |
812 | static_attr.flag &= | |
813 | ~ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
12a844a5 DS |
814 | } |
815 | } else { | |
77e62f2b | 816 | /* Update based on next-hop family to account for |
817 | * RFC 5549 (BGP unnumbered) scenario. Note that | |
818 | * specific action is only needed for the case of | |
819 | * IPv4 nexthops as the attr has been copied | |
820 | * otherwise. | |
821 | */ | |
822 | if (afi == AFI_IP && | |
823 | !BGP_ATTR_NEXTHOP_AFI_IP6(info_vrf->attr)) { | |
12a844a5 DS |
824 | static_attr.mp_nexthop_global_in.s_addr = |
825 | static_attr.nexthop.s_addr; | |
826 | static_attr.mp_nexthop_len = 4; | |
827 | static_attr.flag |= | |
828 | ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
12a844a5 | 829 | } |
ddb5b488 | 830 | } |
960035b2 | 831 | nexthop_self_flag = 1; |
ddb5b488 PZ |
832 | } |
833 | ||
834 | label_val = bgp_vrf->vpn_policy[afi].tovpn_label; | |
835 | if (label_val == MPLS_LABEL_NONE) { | |
291e32c3 | 836 | encode_label(MPLS_LABEL_IMPLICIT_NULL, &label); |
ddb5b488 PZ |
837 | } else { |
838 | encode_label(label_val, &label); | |
839 | } | |
840 | ||
841 | /* Set originator ID to "me" */ | |
842 | SET_FLAG(static_attr.flag, ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)); | |
843 | static_attr.originator_id = bgp_vpn->router_id; | |
844 | ||
845 | ||
846 | new_attr = bgp_attr_intern( | |
847 | &static_attr); /* hashed refcounted everything */ | |
848 | bgp_attr_flush(&static_attr); /* free locally-allocated parts */ | |
849 | ||
c3e345b1 DS |
850 | if (debug && new_attr->ecommunity) { |
851 | char *s = ecommunity_ecom2str(new_attr->ecommunity, | |
852 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 853 | |
ddb5b488 | 854 | zlog_debug("%s: new_attr->ecommunity{%s}", __func__, s); |
c3e345b1 | 855 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
856 | } |
857 | ||
858 | /* Now new_attr is an allocated interned attr */ | |
859 | ||
860 | bn = bgp_afi_node_get(bgp_vpn->rib[afi][safi], afi, safi, p, | |
861 | &(bgp_vrf->vpn_policy[afi].tovpn_rd)); | |
862 | ||
863 | struct bgp_info *new_info; | |
864 | ||
865 | new_info = leak_update(bgp_vpn, bn, new_attr, afi, safi, info_vrf, | |
960035b2 PZ |
866 | &label, 1, info_vrf, bgp_vrf, NULL, |
867 | nexthop_self_flag, debug); | |
ddb5b488 PZ |
868 | |
869 | /* | |
870 | * Routes actually installed in the vpn RIB must also be | |
871 | * offered to all vrfs (because now they originate from | |
872 | * the vpn RIB). | |
873 | * | |
874 | * Acceptance into other vrfs depends on rt-lists. | |
875 | * Originating vrf will not accept the looped back route | |
876 | * because of loop checking. | |
877 | */ | |
878 | if (new_info) | |
321b4bc9 | 879 | vpn_leak_to_vrf_update(bgp_vrf, new_info); |
ddb5b488 PZ |
880 | } |
881 | ||
882 | void vpn_leak_from_vrf_withdraw(struct bgp *bgp_vpn, /* to */ | |
883 | struct bgp *bgp_vrf, /* from */ | |
884 | struct bgp_info *info_vrf) /* route */ | |
885 | { | |
886 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
887 | struct prefix *p = &info_vrf->net->p; | |
888 | afi_t afi = family2afi(p->family); | |
889 | safi_t safi = SAFI_MPLS_VPN; | |
890 | struct bgp_info *bi; | |
891 | struct bgp_node *bn; | |
892 | const char *debugmsg; | |
960035b2 PZ |
893 | char buf_prefix[PREFIX_STRLEN]; |
894 | ||
895 | if (debug) { | |
896 | prefix2str(p, buf_prefix, sizeof(buf_prefix)); | |
897 | zlog_debug( | |
898 | "%s: entry: leak-from=%s, p=%s, type=%d, sub_type=%d", | |
899 | __func__, bgp_vrf->name_pretty, buf_prefix, | |
900 | info_vrf->type, info_vrf->sub_type); | |
901 | } | |
ddb5b488 | 902 | |
ddb5b488 | 903 | if (info_vrf->sub_type != BGP_ROUTE_NORMAL |
82e7e75d | 904 | && info_vrf->sub_type != BGP_ROUTE_STATIC |
905 | && info_vrf->sub_type != BGP_ROUTE_REDISTRIBUTE) { | |
ddb5b488 PZ |
906 | |
907 | if (debug) | |
908 | zlog_debug("%s: wrong sub_type %d", __func__, | |
909 | info_vrf->sub_type); | |
910 | return; | |
911 | } | |
912 | if (!bgp_vpn) | |
913 | return; | |
914 | ||
915 | if (!afi) { | |
916 | if (debug) | |
917 | zlog_debug("%s: can't get afi of prefix", __func__); | |
918 | return; | |
919 | } | |
920 | ||
921 | if (!vpn_leak_to_vpn_active(bgp_vrf, afi, &debugmsg)) { | |
922 | if (debug) | |
923 | zlog_debug("%s: skipping: %s", __func__, debugmsg); | |
924 | return; | |
925 | } | |
926 | ||
927 | if (debug) | |
928 | zlog_debug("%s: withdrawing (info_vrf=%p)", __func__, info_vrf); | |
929 | ||
930 | bn = bgp_afi_node_get(bgp_vpn->rib[afi][safi], afi, safi, p, | |
931 | &(bgp_vrf->vpn_policy[afi].tovpn_rd)); | |
932 | ||
933 | /* | |
934 | * vrf -> vpn | |
935 | * match original bi imported from | |
936 | */ | |
937 | for (bi = (bn ? bn->info : NULL); bi; bi = bi->next) { | |
938 | if (bi->extra && bi->extra->parent == info_vrf) { | |
939 | break; | |
940 | } | |
941 | } | |
942 | ||
943 | if (bi) { | |
944 | /* withdraw from looped vrfs as well */ | |
945 | vpn_leak_to_vrf_withdraw(bgp_vpn, bi); | |
946 | ||
947 | bgp_aggregate_decrement(bgp_vpn, p, bi, afi, safi); | |
948 | bgp_info_delete(bn, bi); | |
949 | bgp_process(bgp_vpn, bn, afi, safi); | |
950 | } | |
951 | bgp_unlock_node(bn); | |
952 | } | |
953 | ||
954 | void vpn_leak_from_vrf_withdraw_all(struct bgp *bgp_vpn, /* to */ | |
955 | struct bgp *bgp_vrf, /* from */ | |
956 | afi_t afi) | |
957 | { | |
958 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
959 | struct bgp_node *prn; | |
960 | safi_t safi = SAFI_MPLS_VPN; | |
961 | ||
962 | /* | |
ddb5b488 PZ |
963 | * Walk vpn table, delete bi with bgp_orig == bgp_vrf |
964 | */ | |
965 | for (prn = bgp_table_top(bgp_vpn->rib[afi][safi]); prn; | |
966 | prn = bgp_route_next(prn)) { | |
967 | ||
968 | struct bgp_table *table; | |
969 | struct bgp_node *bn; | |
970 | struct bgp_info *bi; | |
971 | ||
972 | /* This is the per-RD table of prefixes */ | |
973 | table = prn->info; | |
974 | ||
975 | if (!table) | |
976 | continue; | |
977 | ||
978 | for (bn = bgp_table_top(table); bn; bn = bgp_route_next(bn)) { | |
979 | ||
980 | char buf[PREFIX2STR_BUFFER]; | |
981 | ||
982 | if (debug && bn->info) { | |
983 | zlog_debug( | |
984 | "%s: looking at prefix %s", __func__, | |
985 | prefix2str(&bn->p, buf, sizeof(buf))); | |
986 | } | |
987 | ||
988 | for (bi = bn->info; bi; bi = bi->next) { | |
989 | if (debug) | |
990 | zlog_debug("%s: type %d, sub_type %d", | |
991 | __func__, bi->type, | |
992 | bi->sub_type); | |
993 | if (bi->sub_type != BGP_ROUTE_IMPORTED) | |
994 | continue; | |
995 | if (!bi->extra) | |
996 | continue; | |
997 | if ((struct bgp *)bi->extra->bgp_orig | |
998 | == bgp_vrf) { | |
999 | /* delete route */ | |
1000 | if (debug) | |
1001 | zlog_debug("%s: deleting it\n", | |
1002 | __func__); | |
1003 | bgp_aggregate_decrement(bgp_vpn, &bn->p, | |
1004 | bi, afi, safi); | |
1005 | bgp_info_delete(bn, bi); | |
1006 | bgp_process(bgp_vpn, bn, afi, safi); | |
1007 | } | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | void vpn_leak_from_vrf_update_all(struct bgp *bgp_vpn, /* to */ | |
1014 | struct bgp *bgp_vrf, /* from */ | |
1015 | afi_t afi) | |
1016 | { | |
1017 | struct bgp_node *bn; | |
1018 | struct bgp_info *bi; | |
1019 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
1020 | ||
1021 | if (debug) | |
1022 | zlog_debug("%s: entry, afi=%d, vrf=%s", __func__, afi, | |
960035b2 | 1023 | bgp_vrf->name_pretty); |
ddb5b488 PZ |
1024 | |
1025 | for (bn = bgp_table_top(bgp_vrf->rib[afi][SAFI_UNICAST]); bn; | |
1026 | bn = bgp_route_next(bn)) { | |
1027 | ||
1028 | if (debug) | |
1029 | zlog_debug("%s: node=%p", __func__, bn); | |
1030 | ||
1031 | for (bi = bn->info; bi; bi = bi->next) { | |
1032 | if (debug) | |
1033 | zlog_debug( | |
1034 | "%s: calling vpn_leak_from_vrf_update", | |
1035 | __func__); | |
1036 | vpn_leak_from_vrf_update(bgp_vpn, bgp_vrf, bi); | |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | static void vpn_leak_to_vrf_update_onevrf(struct bgp *bgp_vrf, /* to */ | |
1042 | struct bgp *bgp_vpn, /* from */ | |
1043 | struct bgp_info *info_vpn) /* route */ | |
1044 | { | |
1045 | struct prefix *p = &info_vpn->net->p; | |
1046 | afi_t afi = family2afi(p->family); | |
1047 | ||
ddb5b488 PZ |
1048 | struct attr static_attr = {0}; |
1049 | struct attr *new_attr = NULL; | |
1050 | struct bgp_node *bn; | |
1051 | safi_t safi = SAFI_UNICAST; | |
1052 | const char *debugmsg; | |
1053 | struct prefix nexthop_orig; | |
1054 | mpls_label_t *pLabels = NULL; | |
e37fb4bf | 1055 | uint32_t num_labels = 0; |
960035b2 | 1056 | int nexthop_self_flag = 1; |
513bf8d6 PZ |
1057 | struct bgp_info *bi_ultimate = NULL; |
1058 | int origin_local = 0; | |
d6632478 | 1059 | struct bgp *src_vrf; |
ddb5b488 PZ |
1060 | |
1061 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1062 | ||
b9c7bc5a | 1063 | if (!vpn_leak_from_vpn_active(bgp_vrf, afi, &debugmsg)) { |
ddb5b488 PZ |
1064 | if (debug) |
1065 | zlog_debug("%s: skipping: %s", __func__, debugmsg); | |
1066 | return; | |
1067 | } | |
1068 | ||
1069 | /* Check for intersection of route targets */ | |
1070 | if (!ecom_intersect( | |
1071 | bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_FROMVPN], | |
1072 | info_vpn->attr->ecommunity)) { | |
1073 | ||
1074 | return; | |
1075 | } | |
1076 | ||
1077 | if (debug) | |
960035b2 PZ |
1078 | zlog_debug("%s: updating to vrf %s", __func__, |
1079 | bgp_vrf->name_pretty); | |
ddb5b488 PZ |
1080 | |
1081 | bgp_attr_dup(&static_attr, info_vpn->attr); /* shallow copy */ | |
1082 | ||
1083 | /* | |
1084 | * Nexthop: stash and clear | |
1085 | * | |
1086 | * Nexthop is valid in context of VPN core, but not in destination vrf. | |
1087 | * Stash it for later label resolution by vrf ingress path and then | |
1088 | * overwrite with 0, i.e., "me", for the sake of vrf advertisement. | |
1089 | */ | |
1090 | uint8_t nhfamily = NEXTHOP_FAMILY(info_vpn->attr->mp_nexthop_len); | |
1091 | ||
1092 | memset(&nexthop_orig, 0, sizeof(nexthop_orig)); | |
1093 | nexthop_orig.family = nhfamily; | |
1094 | ||
1095 | switch (nhfamily) { | |
ddb5b488 PZ |
1096 | case AF_INET: |
1097 | /* save */ | |
1098 | nexthop_orig.u.prefix4 = info_vpn->attr->mp_nexthop_global_in; | |
1099 | nexthop_orig.prefixlen = 32; | |
12a844a5 DS |
1100 | |
1101 | if (CHECK_FLAG(bgp_vrf->af_flags[afi][safi], | |
1102 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1103 | static_attr.nexthop.s_addr = | |
1104 | nexthop_orig.u.prefix4.s_addr; | |
1105 | ||
1106 | static_attr.mp_nexthop_global_in = | |
1107 | info_vpn->attr->mp_nexthop_global_in; | |
1108 | static_attr.mp_nexthop_len = | |
1109 | info_vpn->attr->mp_nexthop_len; | |
1110 | } | |
ddb5b488 | 1111 | static_attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
ddb5b488 | 1112 | break; |
ddb5b488 PZ |
1113 | case AF_INET6: |
1114 | /* save */ | |
1115 | nexthop_orig.u.prefix6 = info_vpn->attr->mp_nexthop_global; | |
1116 | nexthop_orig.prefixlen = 128; | |
12a844a5 DS |
1117 | |
1118 | if (CHECK_FLAG(bgp_vrf->af_flags[afi][safi], | |
1119 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1120 | static_attr.mp_nexthop_global = nexthop_orig.u.prefix6; | |
12a844a5 | 1121 | } |
ddb5b488 PZ |
1122 | break; |
1123 | } | |
1124 | ||
ddb5b488 PZ |
1125 | /* |
1126 | * route map handling | |
ddb5b488 | 1127 | */ |
ddb5b488 PZ |
1128 | if (bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN]) { |
1129 | struct bgp_info info; | |
1130 | route_map_result_t ret; | |
1131 | ||
1132 | memset(&info, 0, sizeof(info)); | |
1133 | info.peer = bgp_vrf->peer_self; | |
1134 | info.attr = &static_attr; | |
1135 | ret = route_map_apply(bgp_vrf->vpn_policy[afi] | |
1136 | .rmap[BGP_VPN_POLICY_DIR_FROMVPN], | |
1137 | p, RMAP_BGP, &info); | |
1138 | if (RMAP_DENYMATCH == ret) { | |
1139 | bgp_attr_flush(&static_attr); /* free any added parts */ | |
1140 | if (debug) | |
1141 | zlog_debug( | |
1142 | "%s: vrf %s vpn-policy route map \"%s\" says DENY, returning", | |
960035b2 | 1143 | __func__, bgp_vrf->name_pretty, |
ddb5b488 PZ |
1144 | bgp_vrf->vpn_policy[afi] |
1145 | .rmap[BGP_VPN_POLICY_DIR_FROMVPN] | |
1146 | ->name); | |
1147 | return; | |
1148 | } | |
960035b2 PZ |
1149 | /* |
1150 | * if route-map changed nexthop, don't nexthop-self on output | |
1151 | */ | |
1152 | if (!CHECK_FLAG(static_attr.rmap_change_flags, | |
1153 | BATTR_RMAP_NEXTHOP_UNCHANGED)) | |
1154 | nexthop_self_flag = 0; | |
ddb5b488 PZ |
1155 | } |
1156 | ||
1157 | new_attr = bgp_attr_intern(&static_attr); | |
1158 | bgp_attr_flush(&static_attr); | |
1159 | ||
1160 | bn = bgp_afi_node_get(bgp_vrf->rib[afi][safi], afi, safi, p, NULL); | |
1161 | ||
1162 | /* | |
1163 | * ensure labels are copied | |
513bf8d6 PZ |
1164 | * |
1165 | * However, there is a special case: if the route originated in | |
1166 | * another local VRF (as opposed to arriving via VPN), then the | |
1167 | * nexthop is reached by hairpinning through this router (me) | |
1168 | * using IP forwarding only (no LSP). Therefore, the route | |
1169 | * imported to the VRF should not have labels attached. Note | |
1170 | * that nexthop tracking is also involved: eliminating the | |
1171 | * labels for these routes enables the non-labeled nexthops | |
1172 | * from the originating VRF to be considered valid for this route. | |
ddb5b488 | 1173 | */ |
12a844a5 DS |
1174 | if (!CHECK_FLAG(bgp_vrf->af_flags[afi][safi], |
1175 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1176 | /* work back to original route */ | |
1177 | for (bi_ultimate = info_vpn; | |
1178 | bi_ultimate->extra && bi_ultimate->extra->parent; | |
1179 | bi_ultimate = bi_ultimate->extra->parent) | |
1180 | ; | |
513bf8d6 | 1181 | |
12a844a5 DS |
1182 | /* |
1183 | * if original route was unicast, | |
1184 | * then it did not arrive over vpn | |
1185 | */ | |
1186 | if (bi_ultimate->net) { | |
1187 | struct bgp_table *table; | |
513bf8d6 | 1188 | |
12a844a5 DS |
1189 | table = bgp_node_table(bi_ultimate->net); |
1190 | if (table && (table->safi == SAFI_UNICAST)) | |
1191 | origin_local = 1; | |
1192 | } | |
513bf8d6 | 1193 | |
12a844a5 DS |
1194 | /* copy labels */ |
1195 | if (!origin_local && | |
1196 | info_vpn->extra && info_vpn->extra->num_labels) { | |
1197 | num_labels = info_vpn->extra->num_labels; | |
1198 | if (num_labels > BGP_MAX_LABELS) | |
1199 | num_labels = BGP_MAX_LABELS; | |
1200 | pLabels = info_vpn->extra->label; | |
1201 | } | |
ddb5b488 | 1202 | } |
513bf8d6 | 1203 | |
ddb5b488 PZ |
1204 | if (debug) { |
1205 | char buf_prefix[PREFIX_STRLEN]; | |
1206 | prefix2str(p, buf_prefix, sizeof(buf_prefix)); | |
1207 | zlog_debug("%s: pfx %s: num_labels %d", __func__, buf_prefix, | |
1208 | num_labels); | |
1209 | } | |
1210 | ||
44338987 | 1211 | /* |
1d4e8b0d DS |
1212 | * For VRF-2-VRF route-leaking, |
1213 | * the source will be the originating VRF. | |
44338987 | 1214 | */ |
d6632478 PZ |
1215 | if (info_vpn->extra && info_vpn->extra->bgp_orig) |
1216 | src_vrf = info_vpn->extra->bgp_orig; | |
1217 | else | |
1218 | src_vrf = bgp_vpn; | |
1219 | ||
960035b2 PZ |
1220 | leak_update(bgp_vrf, bn, new_attr, afi, safi, info_vpn, |
1221 | pLabels, num_labels, | |
1222 | info_vpn, /* parent */ | |
d6632478 | 1223 | src_vrf, &nexthop_orig, nexthop_self_flag, debug); |
ddb5b488 PZ |
1224 | } |
1225 | ||
1226 | void vpn_leak_to_vrf_update(struct bgp *bgp_vpn, /* from */ | |
1227 | struct bgp_info *info_vpn) /* route */ | |
1228 | { | |
1229 | struct listnode *mnode, *mnnode; | |
1230 | struct bgp *bgp; | |
1231 | ||
1232 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1233 | ||
1234 | if (debug) | |
1235 | zlog_debug("%s: start (info_vpn=%p)", __func__, info_vpn); | |
1236 | ||
1237 | /* Loop over VRFs */ | |
1238 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
1239 | ||
1240 | if (!info_vpn->extra | |
1241 | || info_vpn->extra->bgp_orig != bgp) { /* no loop */ | |
1242 | vpn_leak_to_vrf_update_onevrf(bgp, bgp_vpn, info_vpn); | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | void vpn_leak_to_vrf_withdraw(struct bgp *bgp_vpn, /* from */ | |
1248 | struct bgp_info *info_vpn) /* route */ | |
1249 | { | |
1b3510a0 PZ |
1250 | struct prefix *p; |
1251 | afi_t afi; | |
ddb5b488 PZ |
1252 | safi_t safi = SAFI_UNICAST; |
1253 | struct bgp *bgp; | |
1254 | struct listnode *mnode, *mnnode; | |
ddb5b488 PZ |
1255 | struct bgp_node *bn; |
1256 | struct bgp_info *bi; | |
1257 | const char *debugmsg; | |
960035b2 | 1258 | char buf_prefix[PREFIX_STRLEN]; |
ddb5b488 PZ |
1259 | |
1260 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1261 | ||
960035b2 PZ |
1262 | if (debug) { |
1263 | prefix2str(&info_vpn->net->p, buf_prefix, sizeof(buf_prefix)); | |
1264 | zlog_debug("%s: entry: p=%s, type=%d, sub_type=%d", | |
1265 | __func__, buf_prefix, | |
1266 | info_vpn->type, info_vpn->sub_type); | |
1267 | } | |
1268 | ||
ddb5b488 PZ |
1269 | if (debug) |
1270 | zlog_debug("%s: start (info_vpn=%p)", __func__, info_vpn); | |
1271 | ||
1b3510a0 | 1272 | if (!info_vpn->net) { |
56c2c080 | 1273 | #if ENABLE_BGP_VNC |
1b3510a0 PZ |
1274 | /* BGP_ROUTE_RFP routes do not have info_vpn->net set (yet) */ |
1275 | if (info_vpn->type == ZEBRA_ROUTE_BGP && | |
1276 | info_vpn->sub_type == BGP_ROUTE_RFP) { | |
1277 | ||
1278 | return; | |
1279 | } | |
56c2c080 | 1280 | #endif |
1b3510a0 PZ |
1281 | if (debug) |
1282 | zlog_debug("%s: info_vpn->net unexpectedly NULL, no prefix, bailing", | |
1283 | __func__); | |
1284 | return; | |
1285 | } | |
1286 | ||
1287 | p = &info_vpn->net->p; | |
1288 | afi = family2afi(p->family); | |
ddb5b488 PZ |
1289 | |
1290 | /* Loop over VRFs */ | |
1291 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
b9c7bc5a | 1292 | if (!vpn_leak_from_vpn_active(bgp, afi, &debugmsg)) { |
ddb5b488 PZ |
1293 | if (debug) |
1294 | zlog_debug("%s: skipping: %s", __func__, | |
1295 | debugmsg); | |
1296 | continue; | |
1297 | } | |
1298 | ||
1299 | /* Check for intersection of route targets */ | |
1300 | if (!ecom_intersect(bgp->vpn_policy[afi] | |
1301 | .rtlist[BGP_VPN_POLICY_DIR_FROMVPN], | |
1302 | info_vpn->attr->ecommunity)) { | |
1303 | ||
1304 | continue; | |
1305 | } | |
1306 | ||
1307 | if (debug) | |
1308 | zlog_debug("%s: withdrawing from vrf %s", __func__, | |
960035b2 | 1309 | bgp->name_pretty); |
ddb5b488 PZ |
1310 | |
1311 | bn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, NULL); | |
1312 | for (bi = (bn ? bn->info : NULL); bi; bi = bi->next) { | |
1313 | if (bi->extra | |
1314 | && (struct bgp_info *)bi->extra->parent | |
1315 | == info_vpn) { | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | if (bi) { | |
1321 | if (debug) | |
1322 | zlog_debug("%s: deleting bi %p", __func__, bi); | |
1323 | bgp_aggregate_decrement(bgp, p, bi, afi, safi); | |
1324 | bgp_info_delete(bn, bi); | |
1325 | bgp_process(bgp, bn, afi, safi); | |
1326 | } | |
1327 | bgp_unlock_node(bn); | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | void vpn_leak_to_vrf_withdraw_all(struct bgp *bgp_vrf, /* to */ | |
1332 | afi_t afi) | |
1333 | { | |
1334 | struct bgp_node *bn; | |
1335 | struct bgp_info *bi; | |
1336 | safi_t safi = SAFI_UNICAST; | |
1337 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
ddb5b488 PZ |
1338 | |
1339 | if (debug) | |
1340 | zlog_debug("%s: entry", __func__); | |
1341 | /* | |
d793761d | 1342 | * Walk vrf table, delete bi with bgp_orig in a different vrf |
ddb5b488 PZ |
1343 | */ |
1344 | for (bn = bgp_table_top(bgp_vrf->rib[afi][safi]); bn; | |
1345 | bn = bgp_route_next(bn)) { | |
1346 | ||
1347 | for (bi = bn->info; bi; bi = bi->next) { | |
d793761d | 1348 | if (bi->extra && bi->extra->bgp_orig != bgp_vrf) { |
ddb5b488 PZ |
1349 | |
1350 | /* delete route */ | |
1351 | bgp_aggregate_decrement(bgp_vrf, &bn->p, bi, | |
1352 | afi, safi); | |
1353 | bgp_info_delete(bn, bi); | |
1354 | bgp_process(bgp_vrf, bn, afi, safi); | |
1355 | } | |
1356 | } | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | void vpn_leak_to_vrf_update_all(struct bgp *bgp_vrf, /* to */ | |
1361 | struct bgp *bgp_vpn, /* from */ | |
1362 | afi_t afi) | |
1363 | { | |
1364 | struct prefix_rd prd; | |
1365 | struct bgp_node *prn; | |
1366 | safi_t safi = SAFI_MPLS_VPN; | |
1367 | ||
3bd70bf8 | 1368 | assert(bgp_vpn); |
73aed584 | 1369 | |
ddb5b488 PZ |
1370 | /* |
1371 | * Walk vpn table | |
1372 | */ | |
1373 | for (prn = bgp_table_top(bgp_vpn->rib[afi][safi]); prn; | |
1374 | prn = bgp_route_next(prn)) { | |
1375 | ||
1376 | struct bgp_table *table; | |
1377 | struct bgp_node *bn; | |
1378 | struct bgp_info *bi; | |
1379 | ||
1380 | memset(&prd, 0, sizeof(prd)); | |
1381 | prd.family = AF_UNSPEC; | |
1382 | prd.prefixlen = 64; | |
1383 | memcpy(prd.val, prn->p.u.val, 8); | |
1384 | ||
1385 | /* This is the per-RD table of prefixes */ | |
1386 | table = prn->info; | |
1387 | ||
1388 | if (!table) | |
1389 | continue; | |
1390 | ||
1391 | for (bn = bgp_table_top(table); bn; bn = bgp_route_next(bn)) { | |
1392 | ||
1393 | for (bi = bn->info; bi; bi = bi->next) { | |
1394 | ||
1395 | if (bi->extra && bi->extra->bgp_orig == bgp_vrf) | |
1396 | continue; | |
1397 | ||
1398 | vpn_leak_to_vrf_update_onevrf(bgp_vrf, bgp_vpn, | |
1399 | bi); | |
1400 | } | |
1401 | } | |
1402 | } | |
1403 | } | |
1404 | ||
d92a55df PZ |
1405 | /* |
1406 | * This function is called for definition/deletion/change to a route-map | |
1407 | */ | |
ddb5b488 PZ |
1408 | static void vpn_policy_routemap_update(struct bgp *bgp, const char *rmap_name) |
1409 | { | |
1410 | int debug = BGP_DEBUG(vpn, VPN_LEAK_RMAP_EVENT); | |
1411 | afi_t afi; | |
1412 | struct route_map *rmap; | |
1413 | ||
1414 | if (bgp->inst_type != BGP_INSTANCE_TYPE_DEFAULT | |
1415 | && bgp->inst_type != BGP_INSTANCE_TYPE_VRF) { | |
1416 | ||
1417 | return; | |
1418 | } | |
1419 | ||
1420 | rmap = route_map_lookup_by_name(rmap_name); /* NULL if deleted */ | |
1421 | ||
1422 | for (afi = 0; afi < AFI_MAX; ++afi) { | |
1423 | ||
d92a55df PZ |
1424 | if (bgp->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_TOVPN] |
1425 | && !strcmp(rmap_name, | |
ddb5b488 PZ |
1426 | bgp->vpn_policy[afi] |
1427 | .rmap_name[BGP_VPN_POLICY_DIR_TOVPN])) { | |
1428 | ||
1429 | if (debug) | |
1430 | zlog_debug( | |
1431 | "%s: rmap \"%s\" matches vrf-policy tovpn for as %d afi %s", | |
1432 | __func__, rmap_name, bgp->as, | |
1433 | afi2str(afi)); | |
1434 | ||
1435 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, afi, | |
1436 | bgp_get_default(), bgp); | |
1437 | if (debug) | |
1438 | zlog_debug("%s: after vpn_leak_prechange", | |
1439 | __func__); | |
1440 | ||
d92a55df PZ |
1441 | /* in case of definition/deletion */ |
1442 | bgp->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN] = | |
1443 | rmap; | |
ddb5b488 PZ |
1444 | |
1445 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, afi, | |
1446 | bgp_get_default(), bgp); | |
d92a55df | 1447 | |
ddb5b488 PZ |
1448 | if (debug) |
1449 | zlog_debug("%s: after vpn_leak_postchange", | |
1450 | __func__); | |
1451 | } | |
1452 | ||
d92a55df PZ |
1453 | if (bgp->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_FROMVPN] |
1454 | && !strcmp(rmap_name, | |
1455 | bgp->vpn_policy[afi] | |
1456 | .rmap_name[BGP_VPN_POLICY_DIR_FROMVPN])) { | |
b9c7bc5a PZ |
1457 | |
1458 | if (debug) { | |
1459 | zlog_debug("%s: rmap \"%s\" matches vrf-policy fromvpn for as %d afi %s", | |
ddb5b488 PZ |
1460 | __func__, rmap_name, bgp->as, |
1461 | afi2str(afi)); | |
b9c7bc5a | 1462 | } |
ddb5b488 PZ |
1463 | |
1464 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_FROMVPN, afi, | |
1465 | bgp_get_default(), bgp); | |
1466 | ||
d92a55df PZ |
1467 | /* in case of definition/deletion */ |
1468 | bgp->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN] = | |
1469 | rmap; | |
ddb5b488 PZ |
1470 | |
1471 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_FROMVPN, afi, | |
1472 | bgp_get_default(), bgp); | |
1473 | } | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | void vpn_policy_routemap_event(const char *rmap_name) | |
1478 | { | |
1479 | int debug = BGP_DEBUG(vpn, VPN_LEAK_RMAP_EVENT); | |
1480 | struct listnode *mnode, *mnnode; | |
1481 | struct bgp *bgp; | |
1482 | ||
1483 | if (debug) | |
1484 | zlog_debug("%s: entry", __func__); | |
1485 | ||
1486 | if (bm->bgp == NULL) /* may be called during cleanup */ | |
1487 | return; | |
1488 | ||
1489 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) | |
1490 | vpn_policy_routemap_update(bgp, rmap_name); | |
1491 | } | |
1492 | ||
1d4e8b0d | 1493 | void vrf_import_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp, |
44338987 | 1494 | afi_t afi, safi_t safi) |
1495 | { | |
1496 | const char *export_name; | |
1497 | vpn_policy_direction_t idir, edir; | |
1498 | char *vname; | |
1499 | char buf[1000]; | |
1500 | struct ecommunity *ecom; | |
1501 | bool first_export = false; | |
1502 | ||
a8dadcf6 | 1503 | export_name = to_bgp->name ? to_bgp->name : BGP_DEFAULT_NAME; |
44338987 | 1504 | idir = BGP_VPN_POLICY_DIR_FROMVPN; |
1505 | edir = BGP_VPN_POLICY_DIR_TOVPN; | |
1506 | ||
1d4e8b0d DS |
1507 | /* |
1508 | * Cross-ref both VRFs. Also, note if this is the first time | |
44338987 | 1509 | * any VRF is importing from "import_vrf". |
1510 | */ | |
a8dadcf6 DS |
1511 | vname = (from_bgp->name ? XSTRDUP(MTYPE_TMP, from_bgp->name) |
1512 | : XSTRDUP(MTYPE_TMP, BGP_DEFAULT_NAME)); | |
1513 | ||
1d4e8b0d | 1514 | listnode_add(to_bgp->vpn_policy[afi].import_vrf, vname); |
44338987 | 1515 | |
1d4e8b0d | 1516 | if (!listcount(from_bgp->vpn_policy[afi].export_vrf)) |
44338987 | 1517 | first_export = true; |
1518 | vname = XSTRDUP(MTYPE_TMP, export_name); | |
1d4e8b0d | 1519 | listnode_add(from_bgp->vpn_policy[afi].export_vrf, vname); |
44338987 | 1520 | |
1521 | /* Update import RT for current VRF using export RT of the VRF we're | |
1522 | * importing from. First though, make sure "import_vrf" has that | |
1523 | * set. | |
1524 | */ | |
1525 | if (first_export) { | |
1d4e8b0d DS |
1526 | form_auto_rd(from_bgp->router_id, from_bgp->vrf_rd_id, |
1527 | &from_bgp->vrf_prd_auto); | |
1528 | from_bgp->vpn_policy[afi].tovpn_rd = from_bgp->vrf_prd_auto; | |
1529 | SET_FLAG(from_bgp->vpn_policy[afi].flags, | |
44338987 | 1530 | BGP_VPN_POLICY_TOVPN_RD_SET); |
1d4e8b0d | 1531 | prefix_rd2str(&from_bgp->vpn_policy[afi].tovpn_rd, |
44338987 | 1532 | buf, sizeof(buf)); |
1d4e8b0d | 1533 | from_bgp->vpn_policy[afi].rtlist[edir] = |
44338987 | 1534 | ecommunity_str2com(buf, ECOMMUNITY_ROUTE_TARGET, 0); |
1d4e8b0d | 1535 | SET_FLAG(from_bgp->af_flags[afi][safi], |
44338987 | 1536 | BGP_CONFIG_VRF_TO_VRF_EXPORT); |
13b7e7f0 DS |
1537 | from_bgp->vpn_policy[afi].tovpn_label = |
1538 | BGP_PREVENT_VRF_2_VRF_LEAK; | |
44338987 | 1539 | } |
1d4e8b0d DS |
1540 | ecom = from_bgp->vpn_policy[afi].rtlist[edir]; |
1541 | if (to_bgp->vpn_policy[afi].rtlist[idir]) | |
1542 | to_bgp->vpn_policy[afi].rtlist[idir] = | |
1543 | ecommunity_merge(to_bgp->vpn_policy[afi] | |
44338987 | 1544 | .rtlist[idir], ecom); |
1545 | else | |
1d4e8b0d DS |
1546 | to_bgp->vpn_policy[afi].rtlist[idir] = ecommunity_dup(ecom); |
1547 | SET_FLAG(to_bgp->af_flags[afi][safi], BGP_CONFIG_VRF_TO_VRF_IMPORT); | |
44338987 | 1548 | |
1549 | /* Does "import_vrf" first need to export its routes or that | |
1550 | * is already done and we just need to import those routes | |
1551 | * from the global table? | |
1552 | */ | |
1553 | if (first_export) | |
1d4e8b0d | 1554 | vpn_leak_postchange(edir, afi, bgp_get_default(), from_bgp); |
44338987 | 1555 | else |
1d4e8b0d | 1556 | vpn_leak_postchange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1557 | } |
1558 | ||
1d4e8b0d | 1559 | void vrf_unimport_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp, |
44338987 | 1560 | afi_t afi, safi_t safi) |
1561 | { | |
a8dadcf6 | 1562 | const char *export_name, *tmp_name; |
44338987 | 1563 | vpn_policy_direction_t idir, edir; |
1564 | char *vname; | |
1565 | struct ecommunity *ecom; | |
1566 | struct listnode *node; | |
1567 | ||
a8dadcf6 DS |
1568 | export_name = to_bgp->name ? to_bgp->name : BGP_DEFAULT_NAME; |
1569 | tmp_name = from_bgp->name ? from_bgp->name : BGP_DEFAULT_NAME; | |
44338987 | 1570 | idir = BGP_VPN_POLICY_DIR_FROMVPN; |
1571 | edir = BGP_VPN_POLICY_DIR_TOVPN; | |
1572 | ||
1573 | /* Were we importing from "import_vrf"? */ | |
1d4e8b0d DS |
1574 | for (ALL_LIST_ELEMENTS_RO(to_bgp->vpn_policy[afi].import_vrf, node, |
1575 | vname)) { | |
a8dadcf6 | 1576 | if (strcmp(vname, tmp_name) == 0) |
020a3f60 | 1577 | break; |
44338987 | 1578 | } |
1d4e8b0d DS |
1579 | |
1580 | /* | |
1581 | * We do not check in the cli if the passed in bgp | |
1582 | * instance is actually imported into us before | |
1583 | * we call this function. As such if we do not | |
1584 | * find this in the import_vrf list than | |
1585 | * we just need to return safely. | |
1586 | */ | |
44338987 | 1587 | if (!vname) |
1588 | return; | |
1589 | ||
1590 | /* Remove "import_vrf" from our import list. */ | |
1d4e8b0d | 1591 | listnode_delete(to_bgp->vpn_policy[afi].import_vrf, vname); |
44338987 | 1592 | XFREE(MTYPE_TMP, vname); |
1593 | ||
1594 | /* Remove routes imported from "import_vrf". */ | |
1595 | /* TODO: In the current logic, we have to first remove all | |
1596 | * imported routes and then (if needed) import back routes | |
1597 | */ | |
1d4e8b0d | 1598 | vpn_leak_prechange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1599 | |
1d4e8b0d DS |
1600 | if (to_bgp->vpn_policy[afi].import_vrf->count == 0) { |
1601 | UNSET_FLAG(to_bgp->af_flags[afi][safi], | |
44338987 | 1602 | BGP_CONFIG_VRF_TO_VRF_IMPORT); |
1d4e8b0d | 1603 | ecommunity_free(&to_bgp->vpn_policy[afi].rtlist[idir]); |
44338987 | 1604 | } else { |
1d4e8b0d DS |
1605 | ecom = from_bgp->vpn_policy[afi].rtlist[edir]; |
1606 | ecommunity_del_val(to_bgp->vpn_policy[afi].rtlist[idir], | |
44338987 | 1607 | (struct ecommunity_val *)ecom->val); |
1d4e8b0d | 1608 | vpn_leak_postchange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1609 | } |
1610 | ||
89d59347 DS |
1611 | /* |
1612 | * What? | |
1613 | * So SA is assuming that since the ALL_LIST_ELEMENTS_RO | |
1614 | * below is checking for NULL that export_vrf can be | |
1615 | * NULL, consequently it is complaining( like a cabbage ) | |
1616 | * that we could dereference and crash in the listcount(..) | |
1617 | * check below. | |
1618 | * So make it happy, under protest, with liberty and justice | |
1619 | * for all. | |
1620 | */ | |
1d4e8b0d | 1621 | assert(from_bgp->vpn_policy[afi].export_vrf); |
89d59347 | 1622 | |
44338987 | 1623 | /* Remove us from "import_vrf's" export list. If no other VRF |
1624 | * is importing from "import_vrf", cleanup appropriately. | |
1625 | */ | |
1d4e8b0d | 1626 | for (ALL_LIST_ELEMENTS_RO(from_bgp->vpn_policy[afi].export_vrf, |
44338987 | 1627 | node, vname)) { |
1628 | if (strcmp(vname, export_name) == 0) | |
1629 | break; | |
1630 | } | |
1631 | ||
1d4e8b0d DS |
1632 | /* |
1633 | * If we have gotten to this point then the vname must | |
1634 | * exist. If not, we are in a world of trouble and | |
1635 | * have slag sitting around. | |
1636 | * | |
1637 | * import_vrf and export_vrf must match in having | |
1638 | * the in/out names as appropriate. | |
1639 | */ | |
1640 | assert(vname); | |
1641 | ||
1642 | listnode_delete(from_bgp->vpn_policy[afi].export_vrf, vname); | |
44338987 | 1643 | XFREE(MTYPE_TMP, vname); |
1644 | ||
1d4e8b0d DS |
1645 | if (!listcount(from_bgp->vpn_policy[afi].export_vrf)) { |
1646 | vpn_leak_prechange(edir, afi, bgp_get_default(), from_bgp); | |
1647 | ecommunity_free(&from_bgp->vpn_policy[afi].rtlist[edir]); | |
1648 | UNSET_FLAG(from_bgp->af_flags[afi][safi], | |
44338987 | 1649 | BGP_CONFIG_VRF_TO_VRF_EXPORT); |
1d4e8b0d | 1650 | memset(&from_bgp->vpn_policy[afi].tovpn_rd, 0, |
44338987 | 1651 | sizeof(struct prefix_rd)); |
1d4e8b0d | 1652 | UNSET_FLAG(from_bgp->vpn_policy[afi].flags, |
44338987 | 1653 | BGP_VPN_POLICY_TOVPN_RD_SET); |
13b7e7f0 DS |
1654 | from_bgp->vpn_policy[afi].tovpn_label = MPLS_LABEL_NONE; |
1655 | ||
44338987 | 1656 | } |
1657 | } | |
1658 | ||
718e3744 | 1659 | /* For testing purpose, static route of MPLS-VPN. */ |
1660 | DEFUN (vpnv4_network, | |
1661 | vpnv4_network_cmd, | |
d114b977 | 1662 | "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
718e3744 | 1663 | "Specify a network to announce via BGP\n" |
0c7b1b01 | 1664 | "IPv4 prefix\n" |
718e3744 | 1665 | "Specify Route Distinguisher\n" |
1666 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1667 | "VPN NLRI label (tag)\n" |
1668 | "VPN NLRI label (tag)\n" | |
1669 | "Label value\n") | |
718e3744 | 1670 | { |
d62a17ae | 1671 | int idx_ipv4_prefixlen = 1; |
1672 | int idx_ext_community = 3; | |
1673 | int idx_label = 5; | |
1674 | return bgp_static_set_safi( | |
1675 | AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, | |
1676 | argv[idx_ext_community]->arg, argv[idx_label]->arg, NULL, 0, | |
1677 | NULL, NULL, NULL, NULL); | |
137446f9 LB |
1678 | } |
1679 | ||
1680 | DEFUN (vpnv4_network_route_map, | |
1681 | vpnv4_network_route_map_cmd, | |
d114b977 | 1682 | "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) route-map WORD", |
137446f9 | 1683 | "Specify a network to announce via BGP\n" |
0c7b1b01 | 1684 | "IPv4 prefix\n" |
137446f9 LB |
1685 | "Specify Route Distinguisher\n" |
1686 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1687 | "VPN NLRI label (tag)\n" |
1688 | "VPN NLRI label (tag)\n" | |
1689 | "Label value\n" | |
137446f9 LB |
1690 | "route map\n" |
1691 | "route map name\n") | |
1692 | { | |
d62a17ae | 1693 | int idx_ipv4_prefixlen = 1; |
1694 | int idx_ext_community = 3; | |
1695 | int idx_label = 5; | |
1696 | int idx_word_2 = 7; | |
1697 | return bgp_static_set_safi( | |
1698 | AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, | |
1699 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1700 | argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL); | |
718e3744 | 1701 | } |
1702 | ||
1703 | /* For testing purpose, static route of MPLS-VPN. */ | |
1704 | DEFUN (no_vpnv4_network, | |
1705 | no_vpnv4_network_cmd, | |
d114b977 | 1706 | "no network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
718e3744 | 1707 | NO_STR |
1708 | "Specify a network to announce via BGP\n" | |
0c7b1b01 | 1709 | "IPv4 prefix\n" |
718e3744 | 1710 | "Specify Route Distinguisher\n" |
1711 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1712 | "VPN NLRI label (tag)\n" |
1713 | "VPN NLRI label (tag)\n" | |
1714 | "Label value\n") | |
718e3744 | 1715 | { |
d62a17ae | 1716 | int idx_ipv4_prefixlen = 2; |
1717 | int idx_ext_community = 4; | |
1718 | int idx_label = 6; | |
1719 | return bgp_static_unset_safi(AFI_IP, SAFI_MPLS_VPN, vty, | |
1720 | argv[idx_ipv4_prefixlen]->arg, | |
1721 | argv[idx_ext_community]->arg, | |
1722 | argv[idx_label]->arg, 0, NULL, NULL, NULL); | |
718e3744 | 1723 | } |
1724 | ||
c286be96 LX |
1725 | DEFUN (vpnv6_network, |
1726 | vpnv6_network_cmd, | |
d114b977 | 1727 | "network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) [route-map WORD]", |
c286be96 LX |
1728 | "Specify a network to announce via BGP\n" |
1729 | "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n" | |
1730 | "Specify Route Distinguisher\n" | |
1731 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1732 | "VPN NLRI label (tag)\n" |
1733 | "VPN NLRI label (tag)\n" | |
1734 | "Label value\n" | |
11daee81 DS |
1735 | "route map\n" |
1736 | "route map name\n") | |
c286be96 | 1737 | { |
d62a17ae | 1738 | int idx_ipv6_prefix = 1; |
1739 | int idx_ext_community = 3; | |
1740 | int idx_label = 5; | |
1741 | int idx_word_2 = 7; | |
1742 | if (argc == 8) | |
1743 | return bgp_static_set_safi( | |
1744 | AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, | |
1745 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1746 | argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL); | |
1747 | else | |
1748 | return bgp_static_set_safi( | |
1749 | AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, | |
1750 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1751 | NULL, 0, NULL, NULL, NULL, NULL); | |
c286be96 LX |
1752 | } |
1753 | ||
1754 | /* For testing purpose, static route of MPLS-VPN. */ | |
1755 | DEFUN (no_vpnv6_network, | |
1756 | no_vpnv6_network_cmd, | |
d114b977 | 1757 | "no network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
c286be96 LX |
1758 | NO_STR |
1759 | "Specify a network to announce via BGP\n" | |
1760 | "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n" | |
1761 | "Specify Route Distinguisher\n" | |
1762 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1763 | "VPN NLRI label (tag)\n" |
1764 | "VPN NLRI label (tag)\n" | |
1765 | "Label value\n") | |
c286be96 | 1766 | { |
d62a17ae | 1767 | int idx_ipv6_prefix = 2; |
1768 | int idx_ext_community = 4; | |
1769 | int idx_label = 6; | |
1770 | return bgp_static_unset_safi(AFI_IP6, SAFI_MPLS_VPN, vty, | |
1771 | argv[idx_ipv6_prefix]->arg, | |
1772 | argv[idx_ext_community]->arg, | |
1773 | argv[idx_label]->arg, 0, NULL, NULL, NULL); | |
c286be96 LX |
1774 | } |
1775 | ||
d62a17ae | 1776 | int bgp_show_mpls_vpn(struct vty *vty, afi_t afi, struct prefix_rd *prd, |
1777 | enum bgp_show_type type, void *output_arg, int tags, | |
d7c0a89a | 1778 | uint8_t use_json) |
718e3744 | 1779 | { |
d62a17ae | 1780 | struct bgp *bgp; |
1781 | struct bgp_table *table; | |
d62a17ae | 1782 | |
1783 | bgp = bgp_get_default(); | |
1784 | if (bgp == NULL) { | |
1785 | if (!use_json) | |
1786 | vty_out(vty, "No BGP process is configured\n"); | |
16307668 RW |
1787 | else |
1788 | vty_out(vty, "{}\n"); | |
d62a17ae | 1789 | return CMD_WARNING; |
1790 | } | |
1ae44dfc | 1791 | table = bgp->rib[afi][SAFI_MPLS_VPN]; |
a4d82a8a PZ |
1792 | return bgp_show_table_rd(vty, bgp, SAFI_MPLS_VPN, table, prd, type, |
1793 | output_arg, use_json); | |
718e3744 | 1794 | } |
1795 | ||
4f280b15 LB |
1796 | DEFUN (show_bgp_ip_vpn_all_rd, |
1797 | show_bgp_ip_vpn_all_rd_cmd, | |
d114b977 | 1798 | "show bgp "BGP_AFI_CMD_STR" vpn all [rd ASN:NN_OR_IP-ADDRESS:NN] [json]", |
e3e29b32 LB |
1799 | SHOW_STR |
1800 | BGP_STR | |
05e588f4 | 1801 | BGP_VPNVX_HELP_STR |
e3e29b32 | 1802 | "Display VPN NLRI specific information\n" |
af8528fa | 1803 | "Display VPN NLRI specific information\n" |
e3e29b32 LB |
1804 | "Display information for a route distinguisher\n" |
1805 | "VPN Route Distinguisher\n" | |
1806 | JSON_STR) | |
1807 | { | |
d62a17ae | 1808 | int ret; |
1809 | struct prefix_rd prd; | |
1810 | afi_t afi; | |
1811 | int idx = 0; | |
1812 | ||
1813 | if (argv_find_and_parse_afi(argv, argc, &idx, &afi)) { | |
3d7c4cd7 | 1814 | if (argv_find(argv, argc, "rd", &idx)) { |
a4d82a8a | 1815 | ret = str2prefix_rd(argv[idx + 1]->arg, &prd); |
d62a17ae | 1816 | if (!ret) { |
1817 | vty_out(vty, | |
1818 | "%% Malformed Route Distinguisher\n"); | |
1819 | return CMD_WARNING; | |
1820 | } | |
1821 | return bgp_show_mpls_vpn(vty, afi, &prd, | |
1822 | bgp_show_type_normal, NULL, 0, | |
1823 | use_json(argc, argv)); | |
1824 | } else { | |
1825 | return bgp_show_mpls_vpn(vty, afi, NULL, | |
1826 | bgp_show_type_normal, NULL, 0, | |
1827 | use_json(argc, argv)); | |
1828 | } | |
1829 | } | |
1830 | return CMD_SUCCESS; | |
718e3744 | 1831 | } |
1832 | ||
af8528fa LB |
1833 | ALIAS(show_bgp_ip_vpn_all_rd, |
1834 | show_bgp_ip_vpn_rd_cmd, | |
1835 | "show bgp "BGP_AFI_CMD_STR" vpn rd ASN:NN_OR_IP-ADDRESS:NN [json]", | |
1836 | SHOW_STR | |
1837 | BGP_STR | |
1838 | BGP_VPNVX_HELP_STR | |
1839 | "Display VPN NLRI specific information\n" | |
1840 | "Display information for a route distinguisher\n" | |
1841 | "VPN Route Distinguisher\n" | |
1842 | JSON_STR) | |
1843 | ||
1844 | #ifdef KEEP_OLD_VPN_COMMANDS | |
3f227172 PG |
1845 | DEFUN (show_ip_bgp_vpn_rd, |
1846 | show_ip_bgp_vpn_rd_cmd, | |
af8528fa | 1847 | "show ip bgp "BGP_AFI_CMD_STR" vpn rd ASN:NN_OR_IP-ADDRESS:NN", |
718e3744 | 1848 | SHOW_STR |
1849 | IP_STR | |
1850 | BGP_STR | |
4f280b15 | 1851 | BGP_AFI_HELP_STR |
3517059b | 1852 | "Address Family modifier\n" |
718e3744 | 1853 | "Display information for a route distinguisher\n" |
1854 | "VPN Route Distinguisher\n") | |
1855 | { | |
d62a17ae | 1856 | int idx_ext_community = argc - 1; |
1857 | int ret; | |
1858 | struct prefix_rd prd; | |
1859 | afi_t afi; | |
1860 | int idx = 0; | |
1861 | ||
1862 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1863 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
1864 | if (!ret) { | |
1865 | vty_out(vty, "%% Malformed Route Distinguisher\n"); | |
1866 | return CMD_WARNING; | |
1867 | } | |
1868 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_normal, | |
1869 | NULL, 0, 0); | |
1870 | } | |
1871 | return CMD_SUCCESS; | |
1872 | } | |
718e3744 | 1873 | |
4f280b15 LB |
1874 | DEFUN (show_ip_bgp_vpn_all, |
1875 | show_ip_bgp_vpn_all_cmd, | |
1876 | "show [ip] bgp <vpnv4|vpnv6>", | |
1877 | SHOW_STR | |
1878 | IP_STR | |
1879 | BGP_STR | |
1880 | BGP_VPNVX_HELP_STR) | |
1881 | { | |
d62a17ae | 1882 | afi_t afi; |
1883 | int idx = 0; | |
4f280b15 | 1884 | |
d62a17ae | 1885 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) |
1886 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_normal, | |
1887 | NULL, 0, 0); | |
1888 | return CMD_SUCCESS; | |
4f280b15 LB |
1889 | } |
1890 | ||
3f227172 PG |
1891 | DEFUN (show_ip_bgp_vpn_all_tags, |
1892 | show_ip_bgp_vpn_all_tags_cmd, | |
1893 | "show [ip] bgp <vpnv4|vpnv6> all tags", | |
718e3744 | 1894 | SHOW_STR |
1895 | IP_STR | |
1896 | BGP_STR | |
3f227172 PG |
1897 | BGP_VPNVX_HELP_STR |
1898 | "Display information about all VPNv4/VPNV6 NLRIs\n" | |
718e3744 | 1899 | "Display BGP tags for prefixes\n") |
1900 | { | |
d62a17ae | 1901 | afi_t afi; |
1902 | int idx = 0; | |
3f227172 | 1903 | |
d62a17ae | 1904 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) |
1905 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_normal, | |
1906 | NULL, 1, 0); | |
1907 | return CMD_SUCCESS; | |
718e3744 | 1908 | } |
1909 | ||
3f227172 PG |
1910 | DEFUN (show_ip_bgp_vpn_rd_tags, |
1911 | show_ip_bgp_vpn_rd_tags_cmd, | |
d114b977 | 1912 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN tags", |
718e3744 | 1913 | SHOW_STR |
1914 | IP_STR | |
1915 | BGP_STR | |
3f227172 | 1916 | BGP_VPNVX_HELP_STR |
718e3744 | 1917 | "Display information for a route distinguisher\n" |
1918 | "VPN Route Distinguisher\n" | |
1919 | "Display BGP tags for prefixes\n") | |
1920 | { | |
d62a17ae | 1921 | int idx_ext_community = 5; |
1922 | int ret; | |
1923 | struct prefix_rd prd; | |
1924 | afi_t afi; | |
1925 | int idx = 0; | |
1926 | ||
1927 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1928 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
1929 | if (!ret) { | |
1930 | vty_out(vty, "%% Malformed Route Distinguisher\n"); | |
1931 | return CMD_WARNING; | |
1932 | } | |
1933 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_normal, | |
1934 | NULL, 1, 0); | |
1935 | } | |
1936 | return CMD_SUCCESS; | |
718e3744 | 1937 | } |
1938 | ||
3f227172 PG |
1939 | DEFUN (show_ip_bgp_vpn_all_neighbor_routes, |
1940 | show_ip_bgp_vpn_all_neighbor_routes_cmd, | |
1941 | "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D routes [json]", | |
718e3744 | 1942 | SHOW_STR |
1943 | IP_STR | |
1944 | BGP_STR | |
3f227172 PG |
1945 | BGP_VPNVX_HELP_STR |
1946 | "Display information about all VPNv4/VPNv6 NLRIs\n" | |
718e3744 | 1947 | "Detailed information on TCP and BGP neighbor connections\n" |
1948 | "Neighbor to display information about\n" | |
856ca177 | 1949 | "Display routes learned from neighbor\n" |
9973d184 | 1950 | JSON_STR) |
718e3744 | 1951 | { |
d62a17ae | 1952 | int idx_ipv4 = 6; |
1953 | union sockunion su; | |
1954 | struct peer *peer; | |
1955 | int ret; | |
d7c0a89a | 1956 | uint8_t uj = use_json(argc, argv); |
d62a17ae | 1957 | afi_t afi; |
1958 | int idx = 0; | |
1959 | ||
1960 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1961 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
1962 | if (ret < 0) { | |
1963 | if (uj) { | |
1964 | json_object *json_no = NULL; | |
1965 | json_no = json_object_new_object(); | |
1966 | json_object_string_add(json_no, "warning", | |
1967 | "Malformed address"); | |
1968 | vty_out(vty, "%s\n", | |
1969 | json_object_to_json_string(json_no)); | |
1970 | json_object_free(json_no); | |
1971 | } else | |
1972 | vty_out(vty, "Malformed address: %s\n", | |
1973 | argv[idx_ipv4]->arg); | |
1974 | return CMD_WARNING; | |
1975 | } | |
1976 | ||
1977 | peer = peer_lookup(NULL, &su); | |
1978 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
1979 | if (uj) { | |
1980 | json_object *json_no = NULL; | |
1981 | json_no = json_object_new_object(); | |
1982 | json_object_string_add( | |
1983 | json_no, "warning", | |
1984 | "No such neighbor or address family"); | |
1985 | vty_out(vty, "%s\n", | |
1986 | json_object_to_json_string(json_no)); | |
1987 | json_object_free(json_no); | |
1988 | } else | |
1989 | vty_out(vty, | |
1990 | "%% No such neighbor or address family\n"); | |
1991 | return CMD_WARNING; | |
1992 | } | |
1993 | ||
1994 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_neighbor, | |
1995 | &su, 0, uj); | |
1996 | } | |
1997 | return CMD_SUCCESS; | |
718e3744 | 1998 | } |
1999 | ||
3f227172 PG |
2000 | DEFUN (show_ip_bgp_vpn_rd_neighbor_routes, |
2001 | show_ip_bgp_vpn_rd_neighbor_routes_cmd, | |
d114b977 | 2002 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D routes [json]", |
718e3744 | 2003 | SHOW_STR |
2004 | IP_STR | |
2005 | BGP_STR | |
3f227172 | 2006 | BGP_VPNVX_HELP_STR |
718e3744 | 2007 | "Display information for a route distinguisher\n" |
2008 | "VPN Route Distinguisher\n" | |
2009 | "Detailed information on TCP and BGP neighbor connections\n" | |
2010 | "Neighbor to display information about\n" | |
856ca177 | 2011 | "Display routes learned from neighbor\n" |
9973d184 | 2012 | JSON_STR) |
718e3744 | 2013 | { |
d62a17ae | 2014 | int idx_ext_community = 5; |
2015 | int idx_ipv4 = 7; | |
2016 | int ret; | |
2017 | union sockunion su; | |
2018 | struct peer *peer; | |
2019 | struct prefix_rd prd; | |
d7c0a89a | 2020 | uint8_t uj = use_json(argc, argv); |
d62a17ae | 2021 | afi_t afi; |
2022 | int idx = 0; | |
2023 | ||
2024 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2025 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
2026 | if (!ret) { | |
2027 | if (uj) { | |
2028 | json_object *json_no = NULL; | |
2029 | json_no = json_object_new_object(); | |
2030 | json_object_string_add( | |
2031 | json_no, "warning", | |
2032 | "Malformed Route Distinguisher"); | |
2033 | vty_out(vty, "%s\n", | |
2034 | json_object_to_json_string(json_no)); | |
2035 | json_object_free(json_no); | |
2036 | } else | |
2037 | vty_out(vty, | |
2038 | "%% Malformed Route Distinguisher\n"); | |
2039 | return CMD_WARNING; | |
2040 | } | |
2041 | ||
2042 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2043 | if (ret < 0) { | |
2044 | if (uj) { | |
2045 | json_object *json_no = NULL; | |
2046 | json_no = json_object_new_object(); | |
2047 | json_object_string_add(json_no, "warning", | |
2048 | "Malformed address"); | |
2049 | vty_out(vty, "%s\n", | |
2050 | json_object_to_json_string(json_no)); | |
2051 | json_object_free(json_no); | |
2052 | } else | |
2053 | vty_out(vty, "Malformed address: %s\n", | |
2054 | argv[idx_ext_community]->arg); | |
2055 | return CMD_WARNING; | |
2056 | } | |
2057 | ||
2058 | peer = peer_lookup(NULL, &su); | |
2059 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2060 | if (uj) { | |
2061 | json_object *json_no = NULL; | |
2062 | json_no = json_object_new_object(); | |
2063 | json_object_string_add( | |
2064 | json_no, "warning", | |
2065 | "No such neighbor or address family"); | |
2066 | vty_out(vty, "%s\n", | |
2067 | json_object_to_json_string(json_no)); | |
2068 | json_object_free(json_no); | |
2069 | } else | |
2070 | vty_out(vty, | |
2071 | "%% No such neighbor or address family\n"); | |
2072 | return CMD_WARNING; | |
2073 | } | |
2074 | ||
2075 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_neighbor, | |
2076 | &su, 0, uj); | |
2077 | } | |
2078 | return CMD_SUCCESS; | |
718e3744 | 2079 | } |
2080 | ||
3f227172 PG |
2081 | DEFUN (show_ip_bgp_vpn_all_neighbor_advertised_routes, |
2082 | show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd, | |
2083 | "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D advertised-routes [json]", | |
718e3744 | 2084 | SHOW_STR |
2085 | IP_STR | |
2086 | BGP_STR | |
3f227172 PG |
2087 | BGP_VPNVX_HELP_STR |
2088 | "Display information about all VPNv4/VPNv6 NLRIs\n" | |
718e3744 | 2089 | "Detailed information on TCP and BGP neighbor connections\n" |
2090 | "Neighbor to display information about\n" | |
856ca177 | 2091 | "Display the routes advertised to a BGP neighbor\n" |
9973d184 | 2092 | JSON_STR) |
718e3744 | 2093 | { |
d62a17ae | 2094 | int idx_ipv4 = 6; |
2095 | int ret; | |
2096 | struct peer *peer; | |
2097 | union sockunion su; | |
d7c0a89a | 2098 | uint8_t uj = use_json(argc, argv); |
d62a17ae | 2099 | afi_t afi; |
2100 | int idx = 0; | |
2101 | ||
2102 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2103 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2104 | if (ret < 0) { | |
2105 | if (uj) { | |
2106 | json_object *json_no = NULL; | |
2107 | json_no = json_object_new_object(); | |
2108 | json_object_string_add(json_no, "warning", | |
2109 | "Malformed address"); | |
2110 | vty_out(vty, "%s\n", | |
2111 | json_object_to_json_string(json_no)); | |
2112 | json_object_free(json_no); | |
2113 | } else | |
2114 | vty_out(vty, "Malformed address: %s\n", | |
2115 | argv[idx_ipv4]->arg); | |
2116 | return CMD_WARNING; | |
2117 | } | |
2118 | peer = peer_lookup(NULL, &su); | |
2119 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2120 | if (uj) { | |
2121 | json_object *json_no = NULL; | |
2122 | json_no = json_object_new_object(); | |
2123 | json_object_string_add( | |
2124 | json_no, "warning", | |
2125 | "No such neighbor or address family"); | |
2126 | vty_out(vty, "%s\n", | |
2127 | json_object_to_json_string(json_no)); | |
2128 | json_object_free(json_no); | |
2129 | } else | |
2130 | vty_out(vty, | |
2131 | "%% No such neighbor or address family\n"); | |
2132 | return CMD_WARNING; | |
2133 | } | |
2134 | return show_adj_route_vpn(vty, peer, NULL, AFI_IP, | |
2135 | SAFI_MPLS_VPN, uj); | |
2136 | } | |
2137 | return CMD_SUCCESS; | |
718e3744 | 2138 | } |
2139 | ||
3f227172 PG |
2140 | DEFUN (show_ip_bgp_vpn_rd_neighbor_advertised_routes, |
2141 | show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd, | |
d114b977 | 2142 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D advertised-routes [json]", |
718e3744 | 2143 | SHOW_STR |
2144 | IP_STR | |
2145 | BGP_STR | |
3f227172 | 2146 | BGP_VPNVX_HELP_STR |
718e3744 | 2147 | "Display information for a route distinguisher\n" |
2148 | "VPN Route Distinguisher\n" | |
2149 | "Detailed information on TCP and BGP neighbor connections\n" | |
2150 | "Neighbor to display information about\n" | |
856ca177 | 2151 | "Display the routes advertised to a BGP neighbor\n" |
9973d184 | 2152 | JSON_STR) |
718e3744 | 2153 | { |
d62a17ae | 2154 | int idx_ext_community = 5; |
2155 | int idx_ipv4 = 7; | |
2156 | int ret; | |
2157 | struct peer *peer; | |
2158 | struct prefix_rd prd; | |
2159 | union sockunion su; | |
d7c0a89a | 2160 | uint8_t uj = use_json(argc, argv); |
d62a17ae | 2161 | afi_t afi; |
2162 | int idx = 0; | |
2163 | ||
2164 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2165 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2166 | if (ret < 0) { | |
2167 | if (uj) { | |
2168 | json_object *json_no = NULL; | |
2169 | json_no = json_object_new_object(); | |
2170 | json_object_string_add(json_no, "warning", | |
2171 | "Malformed address"); | |
2172 | vty_out(vty, "%s\n", | |
2173 | json_object_to_json_string(json_no)); | |
2174 | json_object_free(json_no); | |
2175 | } else | |
2176 | vty_out(vty, "Malformed address: %s\n", | |
2177 | argv[idx_ext_community]->arg); | |
2178 | return CMD_WARNING; | |
2179 | } | |
2180 | peer = peer_lookup(NULL, &su); | |
2181 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2182 | if (uj) { | |
2183 | json_object *json_no = NULL; | |
2184 | json_no = json_object_new_object(); | |
2185 | json_object_string_add( | |
2186 | json_no, "warning", | |
2187 | "No such neighbor or address family"); | |
2188 | vty_out(vty, "%s\n", | |
2189 | json_object_to_json_string(json_no)); | |
2190 | json_object_free(json_no); | |
2191 | } else | |
2192 | vty_out(vty, | |
2193 | "%% No such neighbor or address family\n"); | |
2194 | return CMD_WARNING; | |
2195 | } | |
2196 | ||
2197 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
2198 | if (!ret) { | |
2199 | if (uj) { | |
2200 | json_object *json_no = NULL; | |
2201 | json_no = json_object_new_object(); | |
2202 | json_object_string_add( | |
2203 | json_no, "warning", | |
2204 | "Malformed Route Distinguisher"); | |
2205 | vty_out(vty, "%s\n", | |
2206 | json_object_to_json_string(json_no)); | |
2207 | json_object_free(json_no); | |
2208 | } else | |
2209 | vty_out(vty, | |
2210 | "%% Malformed Route Distinguisher\n"); | |
2211 | return CMD_WARNING; | |
2212 | } | |
2213 | ||
2214 | return show_adj_route_vpn(vty, peer, &prd, AFI_IP, | |
2215 | SAFI_MPLS_VPN, uj); | |
2216 | } | |
2217 | return CMD_SUCCESS; | |
718e3744 | 2218 | } |
d6902373 | 2219 | #endif /* KEEP_OLD_VPN_COMMANDS */ |
718e3744 | 2220 | |
d62a17ae | 2221 | void bgp_mplsvpn_init(void) |
718e3744 | 2222 | { |
d62a17ae | 2223 | install_element(BGP_VPNV4_NODE, &vpnv4_network_cmd); |
2224 | install_element(BGP_VPNV4_NODE, &vpnv4_network_route_map_cmd); | |
2225 | install_element(BGP_VPNV4_NODE, &no_vpnv4_network_cmd); | |
718e3744 | 2226 | |
d62a17ae | 2227 | install_element(BGP_VPNV6_NODE, &vpnv6_network_cmd); |
2228 | install_element(BGP_VPNV6_NODE, &no_vpnv6_network_cmd); | |
c286be96 | 2229 | |
d62a17ae | 2230 | install_element(VIEW_NODE, &show_bgp_ip_vpn_all_rd_cmd); |
af8528fa | 2231 | install_element(VIEW_NODE, &show_bgp_ip_vpn_rd_cmd); |
d6902373 | 2232 | #ifdef KEEP_OLD_VPN_COMMANDS |
af8528fa | 2233 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_cmd); |
d62a17ae | 2234 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_cmd); |
2235 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_tags_cmd); | |
2236 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_tags_cmd); | |
2237 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_neighbor_routes_cmd); | |
2238 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_neighbor_routes_cmd); | |
2239 | install_element(VIEW_NODE, | |
2240 | &show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd); | |
2241 | install_element(VIEW_NODE, | |
2242 | &show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd); | |
d6902373 | 2243 | #endif /* KEEP_OLD_VPN_COMMANDS */ |
718e3744 | 2244 | } |
301ad80a PG |
2245 | |
2246 | vrf_id_t get_first_vrf_for_redirect_with_rt(struct ecommunity *eckey) | |
2247 | { | |
2248 | struct listnode *mnode, *mnnode; | |
2249 | struct bgp *bgp; | |
2250 | ||
2251 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
2252 | struct ecommunity *ec; | |
2253 | ||
2254 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2255 | continue; | |
2256 | ||
2257 | ec = bgp->vpn_policy[AFI_IP].import_redirect_rtlist; | |
2258 | ||
2259 | if (ecom_intersect(ec, eckey)) | |
2260 | return bgp->vrf_id; | |
2261 | } | |
2262 | return VRF_UNKNOWN; | |
2263 | } | |
3bd70bf8 PZ |
2264 | |
2265 | /* | |
2266 | * The purpose of this function is to process leaks that were deferred | |
2267 | * from earlier per-vrf configuration due to not-yet-existing default | |
2268 | * vrf, in other words, configuration such as: | |
2269 | * | |
2270 | * router bgp MMM vrf FOO | |
2271 | * address-family ipv4 unicast | |
2272 | * rd vpn export 1:1 | |
2273 | * exit-address-family | |
2274 | * | |
2275 | * router bgp NNN | |
2276 | * ... | |
2277 | * | |
2278 | * This function gets called when the default instance ("router bgp NNN") | |
2279 | * is created. | |
2280 | */ | |
2281 | void vpn_leak_postchange_all(void) | |
2282 | { | |
2283 | struct listnode *next; | |
2284 | struct bgp *bgp; | |
2285 | struct bgp *bgp_default = bgp_get_default(); | |
2286 | ||
2287 | assert(bgp_default); | |
2288 | ||
2289 | /* First, do any exporting from VRFs to the single VPN RIB */ | |
2290 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { | |
2291 | ||
2292 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2293 | continue; | |
2294 | ||
2295 | vpn_leak_postchange( | |
2296 | BGP_VPN_POLICY_DIR_TOVPN, | |
2297 | AFI_IP, | |
2298 | bgp_default, | |
2299 | bgp); | |
2300 | ||
2301 | vpn_leak_postchange( | |
2302 | BGP_VPN_POLICY_DIR_TOVPN, | |
2303 | AFI_IP6, | |
2304 | bgp_default, | |
2305 | bgp); | |
2306 | } | |
2307 | ||
2308 | /* Now, do any importing to VRFs from the single VPN RIB */ | |
2309 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { | |
2310 | ||
2311 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2312 | continue; | |
2313 | ||
2314 | vpn_leak_postchange( | |
2315 | BGP_VPN_POLICY_DIR_FROMVPN, | |
2316 | AFI_IP, | |
2317 | bgp_default, | |
2318 | bgp); | |
2319 | ||
2320 | vpn_leak_postchange( | |
2321 | BGP_VPN_POLICY_DIR_FROMVPN, | |
2322 | AFI_IP6, | |
2323 | bgp_default, | |
2324 | bgp); | |
2325 | } | |
2326 | } |