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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( |
e50f7cfd | 155 | EC_BGP_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( |
e50f7cfd | 164 | EC_BGP_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( |
e50f7cfd | 173 | EC_BGP_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( |
e50f7cfd | 184 | EC_BGP_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: |
1c50c1c0 | 221 | flog_err(EC_BGP_UPDATE_RCV, "Unknown RD type %d", type); |
d62a17ae | 222 | break; /* just report */ |
223 | } | |
224 | ||
225 | p.prefixlen = | |
226 | prefixlen | |
227 | - VPN_PREFIXLEN_MIN_BYTES * 8; /* exclude label & RD */ | |
a85297a7 | 228 | memcpy(p.u.val, pnt + VPN_PREFIXLEN_MIN_BYTES, |
d62a17ae | 229 | psize - VPN_PREFIXLEN_MIN_BYTES); |
230 | ||
231 | if (attr) { | |
232 | bgp_update(peer, &p, addpath_id, attr, packet->afi, | |
233 | SAFI_MPLS_VPN, ZEBRA_ROUTE_BGP, | |
b57ba6d2 | 234 | BGP_ROUTE_NORMAL, &prd, &label, 1, 0, NULL); |
d62a17ae | 235 | } else { |
236 | bgp_withdraw(peer, &p, addpath_id, attr, packet->afi, | |
237 | SAFI_MPLS_VPN, ZEBRA_ROUTE_BGP, | |
b57ba6d2 | 238 | BGP_ROUTE_NORMAL, &prd, &label, 1, NULL); |
d62a17ae | 239 | } |
240 | } | |
241 | /* Packet length consistency check. */ | |
242 | if (pnt != lim) { | |
af4c2728 | 243 | flog_err( |
e50f7cfd | 244 | EC_BGP_UPDATE_RCV, |
d62a17ae | 245 | "%s [Error] Update packet error / VPN (%zu data remaining after parsing)", |
246 | peer->host, lim - pnt); | |
247 | return -1; | |
248 | } | |
249 | ||
250 | return 0; | |
50905aa2 | 251 | #undef VPN_PREFIXLEN_MIN_BYTES |
718e3744 | 252 | } |
253 | ||
ddb5b488 PZ |
254 | /* |
255 | * This function informs zebra of the label this vrf sets on routes | |
256 | * leaked to VPN. Zebra should install this label in the kernel with | |
257 | * an action of "pop label and then use this vrf's IP FIB to route the PDU." | |
258 | * | |
259 | * Sending this vrf-label association is qualified by a) whether vrf->vpn | |
260 | * exporting is active ("export vpn" is enabled, vpn-policy RD and RT list | |
261 | * are set) and b) whether vpn-policy label is set. | |
262 | * | |
263 | * If any of these conditions do not hold, then we send MPLS_LABEL_NONE | |
264 | * for this vrf, which zebra interprets to mean "delete this vrf-label | |
265 | * association." | |
266 | */ | |
267 | void vpn_leak_zebra_vrf_label_update(struct bgp *bgp, afi_t afi) | |
268 | { | |
269 | mpls_label_t label = MPLS_LABEL_NONE; | |
ddb5b488 PZ |
270 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); |
271 | ||
ddb5b488 PZ |
272 | if (bgp->vrf_id == VRF_UNKNOWN) { |
273 | if (debug) { | |
274 | zlog_debug( | |
275 | "%s: vrf %s: afi %s: vrf_id not set, " | |
276 | "can't set zebra vrf label", | |
960035b2 | 277 | __func__, bgp->name_pretty, afi2str(afi)); |
ddb5b488 PZ |
278 | } |
279 | return; | |
280 | } | |
281 | ||
282 | if (vpn_leak_to_vpn_active(bgp, afi, NULL)) { | |
283 | label = bgp->vpn_policy[afi].tovpn_label; | |
284 | } | |
285 | ||
286 | if (debug) { | |
287 | zlog_debug("%s: vrf %s: afi %s: setting label %d for vrf id %d", | |
960035b2 PZ |
288 | __func__, bgp->name_pretty, afi2str(afi), label, |
289 | bgp->vrf_id); | |
ddb5b488 PZ |
290 | } |
291 | ||
292 | zclient_send_vrf_label(zclient, bgp->vrf_id, afi, label, ZEBRA_LSP_BGP); | |
293 | bgp->vpn_policy[afi].tovpn_zebra_vrf_label_last_sent = label; | |
294 | } | |
295 | ||
296 | /* | |
297 | * If zebra tells us vrf has become unconfigured, tell zebra not to | |
298 | * use this label to forward to the vrf anymore | |
299 | */ | |
300 | void vpn_leak_zebra_vrf_label_withdraw(struct bgp *bgp, afi_t afi) | |
301 | { | |
302 | mpls_label_t label = MPLS_LABEL_NONE; | |
303 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); | |
304 | ||
305 | if (bgp->vrf_id == VRF_UNKNOWN) { | |
306 | if (debug) { | |
307 | zlog_debug( | |
308 | "%s: vrf_id not set, can't delete zebra vrf label", | |
309 | __func__); | |
310 | } | |
311 | return; | |
312 | } | |
313 | ||
314 | if (debug) { | |
315 | zlog_debug("%s: deleting label for vrf %s (id=%d)", __func__, | |
960035b2 | 316 | bgp->name_pretty, bgp->vrf_id); |
ddb5b488 PZ |
317 | } |
318 | ||
319 | zclient_send_vrf_label(zclient, bgp->vrf_id, afi, label, ZEBRA_LSP_BGP); | |
320 | bgp->vpn_policy[afi].tovpn_zebra_vrf_label_last_sent = label; | |
321 | } | |
322 | ||
e70e9f8e PZ |
323 | int vpn_leak_label_callback( |
324 | mpls_label_t label, | |
325 | void *labelid, | |
326 | bool allocated) | |
327 | { | |
328 | struct vpn_policy *vp = (struct vpn_policy *)labelid; | |
329 | int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL); | |
330 | ||
331 | if (debug) | |
332 | zlog_debug("%s: label=%u, allocated=%d", | |
333 | __func__, label, allocated); | |
334 | ||
335 | if (!allocated) { | |
336 | /* | |
337 | * previously-allocated label is now invalid | |
338 | */ | |
339 | if (CHECK_FLAG(vp->flags, BGP_VPN_POLICY_TOVPN_LABEL_AUTO) && | |
340 | (vp->tovpn_label != MPLS_LABEL_NONE)) { | |
341 | ||
342 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, | |
343 | vp->afi, bgp_get_default(), vp->bgp); | |
344 | vp->tovpn_label = MPLS_LABEL_NONE; | |
345 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, | |
346 | vp->afi, bgp_get_default(), vp->bgp); | |
347 | } | |
348 | return 0; | |
349 | } | |
350 | ||
351 | /* | |
352 | * New label allocation | |
353 | */ | |
354 | if (!CHECK_FLAG(vp->flags, BGP_VPN_POLICY_TOVPN_LABEL_AUTO)) { | |
355 | ||
356 | /* | |
357 | * not currently configured for auto label, reject allocation | |
358 | */ | |
359 | return -1; | |
360 | } | |
361 | ||
362 | if (vp->tovpn_label != MPLS_LABEL_NONE) { | |
363 | if (label == vp->tovpn_label) { | |
364 | /* already have same label, accept but do nothing */ | |
365 | return 0; | |
366 | } | |
367 | /* Shouldn't happen: different label allocation */ | |
e50f7cfd | 368 | flog_err(EC_BGP_LABEL, |
1c50c1c0 QY |
369 | "%s: %s had label %u but got new assignment %u", |
370 | __func__, vp->bgp->name_pretty, vp->tovpn_label, | |
371 | label); | |
e70e9f8e PZ |
372 | /* use new one */ |
373 | } | |
374 | ||
375 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, | |
376 | vp->afi, bgp_get_default(), vp->bgp); | |
377 | vp->tovpn_label = label; | |
378 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, | |
379 | vp->afi, bgp_get_default(), vp->bgp); | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
ddb5b488 PZ |
384 | static int ecom_intersect(struct ecommunity *e1, struct ecommunity *e2) |
385 | { | |
386 | int i; | |
387 | int j; | |
388 | ||
389 | if (!e1 || !e2) | |
390 | return 0; | |
391 | ||
392 | for (i = 0; i < e1->size; ++i) { | |
393 | for (j = 0; j < e2->size; ++j) { | |
394 | if (!memcmp(e1->val + (i * ECOMMUNITY_SIZE), | |
395 | e2->val + (j * ECOMMUNITY_SIZE), | |
396 | ECOMMUNITY_SIZE)) { | |
397 | ||
398 | return 1; | |
399 | } | |
400 | } | |
401 | } | |
402 | return 0; | |
403 | } | |
404 | ||
40381db7 | 405 | static bool labels_same(struct bgp_path_info *bpi, mpls_label_t *label, |
4b7e6066 | 406 | uint32_t n) |
e37fb4bf PZ |
407 | { |
408 | uint32_t i; | |
409 | ||
40381db7 | 410 | if (!bpi->extra) { |
e37fb4bf PZ |
411 | if (!n) |
412 | return true; | |
413 | else | |
414 | return false; | |
415 | } | |
416 | ||
40381db7 | 417 | if (n != bpi->extra->num_labels) |
e37fb4bf PZ |
418 | return false; |
419 | ||
420 | for (i = 0; i < n; ++i) { | |
40381db7 | 421 | if (label[i] != bpi->extra->label[i]) |
e37fb4bf PZ |
422 | return false; |
423 | } | |
424 | return true; | |
425 | } | |
426 | ||
427 | /* | |
428 | * make encoded route labels match specified encoded label set | |
429 | */ | |
40381db7 | 430 | static void setlabels(struct bgp_path_info *bpi, |
4b7e6066 DS |
431 | mpls_label_t *label, /* array of labels */ |
432 | uint32_t num_labels) | |
e37fb4bf PZ |
433 | { |
434 | if (num_labels) | |
435 | assert(label); | |
436 | assert(num_labels <= BGP_MAX_LABELS); | |
437 | ||
438 | if (!num_labels) { | |
40381db7 DS |
439 | if (bpi->extra) |
440 | bpi->extra->num_labels = 0; | |
e37fb4bf PZ |
441 | return; |
442 | } | |
443 | ||
40381db7 | 444 | struct bgp_path_info_extra *extra = bgp_path_info_extra_get(bpi); |
e37fb4bf PZ |
445 | uint32_t i; |
446 | ||
447 | for (i = 0; i < num_labels; ++i) { | |
448 | extra->label[i] = label[i]; | |
449 | if (!bgp_is_valid_label(&label[i])) { | |
450 | bgp_set_valid_label(&extra->label[i]); | |
451 | } | |
452 | } | |
453 | extra->num_labels = num_labels; | |
454 | } | |
455 | ||
ddb5b488 | 456 | /* |
18ee8310 | 457 | * returns pointer to new bgp_path_info upon success |
ddb5b488 | 458 | */ |
4b7e6066 DS |
459 | static struct bgp_path_info * |
460 | leak_update(struct bgp *bgp, /* destination bgp instance */ | |
461 | struct bgp_node *bn, struct attr *new_attr, /* already interned */ | |
40381db7 | 462 | afi_t afi, safi_t safi, struct bgp_path_info *source_bpi, |
4b7e6066 DS |
463 | mpls_label_t *label, uint32_t num_labels, void *parent, |
464 | struct bgp *bgp_orig, struct prefix *nexthop_orig, | |
465 | int nexthop_self_flag, int debug) | |
ddb5b488 PZ |
466 | { |
467 | struct prefix *p = &bn->p; | |
40381db7 DS |
468 | struct bgp_path_info *bpi; |
469 | struct bgp_path_info *bpi_ultimate; | |
4b7e6066 | 470 | struct bgp_path_info *new; |
ddb5b488 | 471 | char buf_prefix[PREFIX_STRLEN]; |
ddb5b488 PZ |
472 | |
473 | if (debug) { | |
474 | prefix2str(&bn->p, buf_prefix, sizeof(buf_prefix)); | |
960035b2 | 475 | zlog_debug("%s: entry: leak-to=%s, p=%s, type=%d, sub_type=%d", |
40381db7 DS |
476 | __func__, bgp->name_pretty, buf_prefix, |
477 | source_bpi->type, source_bpi->sub_type); | |
ddb5b488 PZ |
478 | } |
479 | ||
f46d45c1 PZ |
480 | /* |
481 | * Routes that are redistributed into BGP from zebra do not get | |
482 | * nexthop tracking. However, if those routes are subsequently | |
483 | * imported to other RIBs within BGP, the leaked routes do not | |
484 | * carry the original BGP_ROUTE_REDISTRIBUTE sub_type. Therefore, | |
485 | * in order to determine if the route we are currently leaking | |
486 | * should have nexthop tracking, we must find the ultimate | |
487 | * parent so we can check its sub_type. | |
488 | * | |
40381db7 | 489 | * As of now, source_bpi may at most be a second-generation route |
f46d45c1 PZ |
490 | * (only one hop back to ultimate parent for vrf-vpn-vrf scheme). |
491 | * Using a loop here supports more complex intra-bgp import-export | |
492 | * schemes that could be implemented in the future. | |
3bd70bf8 | 493 | * |
f46d45c1 | 494 | */ |
40381db7 DS |
495 | for (bpi_ultimate = source_bpi; |
496 | bpi_ultimate->extra && bpi_ultimate->extra->parent; | |
497 | bpi_ultimate = bpi_ultimate->extra->parent) | |
498 | ; | |
f46d45c1 | 499 | |
ddb5b488 PZ |
500 | /* |
501 | * match parent | |
502 | */ | |
40381db7 DS |
503 | for (bpi = bn->info; bpi; bpi = bpi->next) { |
504 | if (bpi->extra && bpi->extra->parent == parent) | |
ddb5b488 PZ |
505 | break; |
506 | } | |
507 | ||
40381db7 DS |
508 | if (bpi) { |
509 | bool labelssame = labels_same(bpi, label, num_labels); | |
e37fb4bf | 510 | |
40381db7 DS |
511 | if (attrhash_cmp(bpi->attr, new_attr) && labelssame |
512 | && !CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) { | |
ddb5b488 PZ |
513 | |
514 | bgp_attr_unintern(&new_attr); | |
515 | if (debug) | |
516 | zlog_debug( | |
517 | "%s: ->%s: %s: Found route, no change", | |
960035b2 | 518 | __func__, bgp->name_pretty, |
ddb5b488 PZ |
519 | buf_prefix); |
520 | return NULL; | |
521 | } | |
522 | ||
523 | /* attr is changed */ | |
40381db7 | 524 | bgp_path_info_set_flag(bn, bpi, BGP_PATH_ATTR_CHANGED); |
ddb5b488 PZ |
525 | |
526 | /* Rewrite BGP route information. */ | |
40381db7 DS |
527 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
528 | bgp_path_info_restore(bn, bpi); | |
ddb5b488 | 529 | else |
40381db7 DS |
530 | bgp_aggregate_decrement(bgp, p, bpi, afi, safi); |
531 | bgp_attr_unintern(&bpi->attr); | |
532 | bpi->attr = new_attr; | |
533 | bpi->uptime = bgp_clock(); | |
ddb5b488 | 534 | |
e37fb4bf PZ |
535 | /* |
536 | * rewrite labels | |
537 | */ | |
538 | if (!labelssame) | |
40381db7 | 539 | setlabels(bpi, label, num_labels); |
e37fb4bf | 540 | |
960035b2 | 541 | if (nexthop_self_flag) |
40381db7 | 542 | bgp_path_info_set_flag(bn, bpi, BGP_PATH_ANNC_NH_SELF); |
960035b2 PZ |
543 | |
544 | struct bgp *bgp_nexthop = bgp; | |
545 | int nh_valid; | |
546 | ||
40381db7 DS |
547 | if (bpi->extra && bpi->extra->bgp_orig) |
548 | bgp_nexthop = bpi->extra->bgp_orig; | |
960035b2 PZ |
549 | |
550 | /* No nexthop tracking for redistributed routes */ | |
40381db7 | 551 | if (bpi_ultimate->sub_type == BGP_ROUTE_REDISTRIBUTE) |
960035b2 PZ |
552 | nh_valid = 1; |
553 | else | |
554 | /* | |
555 | * TBD do we need to do anything about the | |
556 | * 'connected' parameter? | |
557 | */ | |
40381db7 DS |
558 | nh_valid = bgp_find_or_add_nexthop(bgp, bgp_nexthop, |
559 | afi, bpi, NULL, 0); | |
960035b2 PZ |
560 | |
561 | if (debug) | |
562 | zlog_debug("%s: nexthop is %svalid (in vrf %s)", | |
563 | __func__, (nh_valid ? "" : "not "), | |
564 | bgp_nexthop->name_pretty); | |
565 | ||
566 | if (nh_valid) | |
40381db7 | 567 | bgp_path_info_set_flag(bn, bpi, BGP_PATH_VALID); |
960035b2 | 568 | |
ddb5b488 | 569 | /* Process change. */ |
40381db7 | 570 | bgp_aggregate_increment(bgp, p, bpi, afi, safi); |
ddb5b488 PZ |
571 | bgp_process(bgp, bn, afi, safi); |
572 | bgp_unlock_node(bn); | |
573 | ||
574 | if (debug) | |
575 | zlog_debug("%s: ->%s: %s Found route, changed attr", | |
960035b2 | 576 | __func__, bgp->name_pretty, buf_prefix); |
ddb5b488 | 577 | |
40381db7 | 578 | return bpi; |
ddb5b488 PZ |
579 | } |
580 | ||
960035b2 PZ |
581 | new = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_IMPORTED, 0, |
582 | bgp->peer_self, new_attr, bn); | |
583 | ||
584 | if (nexthop_self_flag) | |
18ee8310 | 585 | bgp_path_info_set_flag(bn, new, BGP_PATH_ANNC_NH_SELF); |
ddb5b488 | 586 | |
18ee8310 | 587 | bgp_path_info_extra_get(new); |
4b85140f | 588 | |
e37fb4bf PZ |
589 | if (num_labels) |
590 | setlabels(new, label, num_labels); | |
591 | ||
18ee8310 | 592 | new->extra->parent = bgp_path_info_lock(parent); |
4b7e6066 | 593 | bgp_lock_node((struct bgp_node *)((struct bgp_path_info *)parent)->net); |
ddb5b488 | 594 | if (bgp_orig) |
21d88ef7 | 595 | new->extra->bgp_orig = bgp_lock(bgp_orig); |
ddb5b488 PZ |
596 | if (nexthop_orig) |
597 | new->extra->nexthop_orig = *nexthop_orig; | |
598 | ||
960035b2 PZ |
599 | /* |
600 | * nexthop tracking for unicast routes | |
601 | */ | |
602 | struct bgp *bgp_nexthop = bgp; | |
603 | int nh_valid; | |
604 | ||
4b85140f | 605 | if (new->extra->bgp_orig) |
960035b2 PZ |
606 | bgp_nexthop = new->extra->bgp_orig; |
607 | ||
608 | /* | |
609 | * No nexthop tracking for redistributed routes because | |
610 | * their originating protocols will do the tracking and | |
611 | * withdraw those routes if the nexthops become unreachable | |
612 | */ | |
40381db7 | 613 | if (bpi_ultimate->sub_type == BGP_ROUTE_REDISTRIBUTE) |
960035b2 PZ |
614 | nh_valid = 1; |
615 | else | |
616 | /* | |
617 | * TBD do we need to do anything about the | |
618 | * 'connected' parameter? | |
619 | */ | |
620 | nh_valid = bgp_find_or_add_nexthop(bgp, bgp_nexthop, | |
621 | afi, new, NULL, 0); | |
622 | ||
623 | if (debug) | |
624 | zlog_debug("%s: nexthop is %svalid (in vrf %s)", | |
625 | __func__, (nh_valid ? "" : "not "), | |
626 | bgp_nexthop->name_pretty); | |
627 | if (nh_valid) | |
18ee8310 | 628 | bgp_path_info_set_flag(bn, new, BGP_PATH_VALID); |
960035b2 | 629 | |
ddb5b488 | 630 | bgp_aggregate_increment(bgp, p, new, afi, safi); |
18ee8310 | 631 | bgp_path_info_add(bn, new); |
ddb5b488 PZ |
632 | |
633 | bgp_unlock_node(bn); | |
634 | bgp_process(bgp, bn, afi, safi); | |
635 | ||
636 | if (debug) | |
637 | zlog_debug("%s: ->%s: %s: Added new route", __func__, | |
960035b2 | 638 | bgp->name_pretty, buf_prefix); |
ddb5b488 PZ |
639 | |
640 | return new; | |
641 | } | |
642 | ||
643 | /* cf vnc_import_bgp_add_route_mode_nvegroup() and add_vnc_route() */ | |
4b7e6066 DS |
644 | void vpn_leak_from_vrf_update(struct bgp *bgp_vpn, /* to */ |
645 | struct bgp *bgp_vrf, /* from */ | |
40381db7 | 646 | struct bgp_path_info *path_vrf) /* route */ |
ddb5b488 PZ |
647 | { |
648 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
40381db7 | 649 | struct prefix *p = &path_vrf->net->p; |
ddb5b488 PZ |
650 | afi_t afi = family2afi(p->family); |
651 | struct attr static_attr = {0}; | |
652 | struct attr *new_attr = NULL; | |
653 | safi_t safi = SAFI_MPLS_VPN; | |
654 | mpls_label_t label_val; | |
655 | mpls_label_t label; | |
656 | struct bgp_node *bn; | |
657 | const char *debugmsg; | |
960035b2 PZ |
658 | int nexthop_self_flag = 0; |
659 | ||
660 | if (debug) | |
661 | zlog_debug("%s: from vrf %s", __func__, bgp_vrf->name_pretty); | |
ddb5b488 | 662 | |
40381db7 DS |
663 | if (debug && path_vrf->attr->ecommunity) { |
664 | char *s = ecommunity_ecom2str(path_vrf->attr->ecommunity, | |
c8f57349 | 665 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); |
ddb5b488 | 666 | |
40381db7 DS |
667 | zlog_debug("%s: %s path_vrf->type=%d, EC{%s}", __func__, |
668 | bgp_vrf->name, path_vrf->type, s); | |
c8f57349 | 669 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
670 | } |
671 | ||
672 | if (!bgp_vpn) | |
673 | return; | |
674 | ||
675 | if (!afi) { | |
676 | if (debug) | |
677 | zlog_debug("%s: can't get afi of prefix", __func__); | |
678 | return; | |
679 | } | |
680 | ||
cc5a6ddd | 681 | /* loop check - should not be an imported route. */ |
40381db7 | 682 | if (path_vrf->extra && path_vrf->extra->bgp_orig) |
ddb5b488 PZ |
683 | return; |
684 | ||
685 | ||
686 | if (!vpn_leak_to_vpn_active(bgp_vrf, afi, &debugmsg)) { | |
687 | if (debug) | |
12a844a5 DS |
688 | zlog_debug("%s: %s skipping: %s", __func__, |
689 | bgp_vrf->name, debugmsg); | |
ddb5b488 PZ |
690 | return; |
691 | } | |
692 | ||
40381db7 | 693 | bgp_attr_dup(&static_attr, path_vrf->attr); /* shallow copy */ |
ddb5b488 PZ |
694 | |
695 | /* | |
696 | * route map handling | |
697 | */ | |
698 | if (bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN]) { | |
4b7e6066 | 699 | struct bgp_path_info info; |
ddb5b488 PZ |
700 | route_map_result_t ret; |
701 | ||
702 | memset(&info, 0, sizeof(info)); | |
703 | info.peer = bgp_vpn->peer_self; | |
704 | info.attr = &static_attr; | |
705 | ret = route_map_apply( | |
706 | bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN], | |
707 | p, RMAP_BGP, &info); | |
708 | if (RMAP_DENYMATCH == ret) { | |
709 | bgp_attr_flush(&static_attr); /* free any added parts */ | |
710 | if (debug) | |
711 | zlog_debug( | |
712 | "%s: vrf %s route map \"%s\" says DENY, returning", | |
960035b2 | 713 | __func__, bgp_vrf->name_pretty, |
ddb5b488 PZ |
714 | bgp_vrf->vpn_policy[afi] |
715 | .rmap[BGP_VPN_POLICY_DIR_TOVPN] | |
716 | ->name); | |
717 | return; | |
718 | } | |
719 | } | |
720 | ||
c8f57349 DS |
721 | if (debug && static_attr.ecommunity) { |
722 | char *s = ecommunity_ecom2str(static_attr.ecommunity, | |
723 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 724 | |
ddb5b488 PZ |
725 | zlog_debug("%s: post route map static_attr.ecommunity{%s}", |
726 | __func__, s); | |
c8f57349 | 727 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
728 | } |
729 | ||
730 | /* | |
731 | * Add the vpn-policy rt-list | |
732 | */ | |
733 | struct ecommunity *old_ecom; | |
734 | struct ecommunity *new_ecom; | |
735 | ||
736 | old_ecom = static_attr.ecommunity; | |
737 | if (old_ecom) { | |
738 | new_ecom = ecommunity_merge( | |
739 | ecommunity_dup(old_ecom), | |
740 | bgp_vrf->vpn_policy[afi] | |
741 | .rtlist[BGP_VPN_POLICY_DIR_TOVPN]); | |
742 | if (!old_ecom->refcnt) | |
743 | ecommunity_free(&old_ecom); | |
744 | } else { | |
745 | new_ecom = ecommunity_dup( | |
746 | bgp_vrf->vpn_policy[afi] | |
747 | .rtlist[BGP_VPN_POLICY_DIR_TOVPN]); | |
748 | } | |
749 | static_attr.ecommunity = new_ecom; | |
750 | SET_FLAG(static_attr.flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)); | |
751 | ||
c8f57349 DS |
752 | if (debug && static_attr.ecommunity) { |
753 | char *s = ecommunity_ecom2str(static_attr.ecommunity, | |
754 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 755 | |
ddb5b488 PZ |
756 | zlog_debug("%s: post merge static_attr.ecommunity{%s}", |
757 | __func__, s); | |
c8f57349 | 758 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
759 | } |
760 | ||
761 | /* Nexthop */ | |
762 | /* if policy nexthop not set, use 0 */ | |
763 | if (CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags, | |
764 | BGP_VPN_POLICY_TOVPN_NEXTHOP_SET)) { | |
ddb5b488 PZ |
765 | struct prefix *nexthop = |
766 | &bgp_vrf->vpn_policy[afi].tovpn_nexthop; | |
12a844a5 | 767 | |
ddb5b488 PZ |
768 | switch (nexthop->family) { |
769 | case AF_INET: | |
770 | /* prevent mp_nexthop_global_in <- self in bgp_route.c | |
771 | */ | |
772 | static_attr.nexthop.s_addr = nexthop->u.prefix4.s_addr; | |
773 | ||
774 | static_attr.mp_nexthop_global_in = nexthop->u.prefix4; | |
775 | static_attr.mp_nexthop_len = 4; | |
776 | break; | |
777 | ||
778 | case AF_INET6: | |
779 | static_attr.mp_nexthop_global = nexthop->u.prefix6; | |
780 | static_attr.mp_nexthop_len = 16; | |
781 | break; | |
782 | ||
783 | default: | |
784 | assert(0); | |
785 | } | |
786 | } else { | |
12a844a5 DS |
787 | if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST], |
788 | BGP_CONFIG_VRF_TO_VRF_EXPORT)) { | |
789 | if (afi == AFI_IP) { | |
020a3f60 DS |
790 | /* |
791 | * For ipv4, copy to multiprotocol | |
792 | * nexthop field | |
793 | */ | |
794 | static_attr.mp_nexthop_global_in = | |
795 | static_attr.nexthop; | |
12a844a5 | 796 | static_attr.mp_nexthop_len = 4; |
020a3f60 DS |
797 | /* |
798 | * XXX Leave static_attr.nexthop | |
799 | * intact for NHT | |
800 | */ | |
801 | static_attr.flag &= | |
802 | ~ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
12a844a5 DS |
803 | } |
804 | } else { | |
77e62f2b | 805 | /* Update based on next-hop family to account for |
806 | * RFC 5549 (BGP unnumbered) scenario. Note that | |
807 | * specific action is only needed for the case of | |
808 | * IPv4 nexthops as the attr has been copied | |
809 | * otherwise. | |
810 | */ | |
40381db7 DS |
811 | if (afi == AFI_IP |
812 | && !BGP_ATTR_NEXTHOP_AFI_IP6(path_vrf->attr)) { | |
12a844a5 DS |
813 | static_attr.mp_nexthop_global_in.s_addr = |
814 | static_attr.nexthop.s_addr; | |
815 | static_attr.mp_nexthop_len = 4; | |
816 | static_attr.flag |= | |
817 | ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
12a844a5 | 818 | } |
ddb5b488 | 819 | } |
960035b2 | 820 | nexthop_self_flag = 1; |
ddb5b488 PZ |
821 | } |
822 | ||
823 | label_val = bgp_vrf->vpn_policy[afi].tovpn_label; | |
824 | if (label_val == MPLS_LABEL_NONE) { | |
291e32c3 | 825 | encode_label(MPLS_LABEL_IMPLICIT_NULL, &label); |
ddb5b488 PZ |
826 | } else { |
827 | encode_label(label_val, &label); | |
828 | } | |
829 | ||
830 | /* Set originator ID to "me" */ | |
831 | SET_FLAG(static_attr.flag, ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID)); | |
832 | static_attr.originator_id = bgp_vpn->router_id; | |
833 | ||
834 | ||
835 | new_attr = bgp_attr_intern( | |
836 | &static_attr); /* hashed refcounted everything */ | |
837 | bgp_attr_flush(&static_attr); /* free locally-allocated parts */ | |
838 | ||
c3e345b1 DS |
839 | if (debug && new_attr->ecommunity) { |
840 | char *s = ecommunity_ecom2str(new_attr->ecommunity, | |
841 | ECOMMUNITY_FORMAT_ROUTE_MAP, 0); | |
ddb5b488 | 842 | |
ddb5b488 | 843 | zlog_debug("%s: new_attr->ecommunity{%s}", __func__, s); |
c3e345b1 | 844 | XFREE(MTYPE_ECOMMUNITY_STR, s); |
ddb5b488 PZ |
845 | } |
846 | ||
847 | /* Now new_attr is an allocated interned attr */ | |
848 | ||
849 | bn = bgp_afi_node_get(bgp_vpn->rib[afi][safi], afi, safi, p, | |
850 | &(bgp_vrf->vpn_policy[afi].tovpn_rd)); | |
851 | ||
4b7e6066 | 852 | struct bgp_path_info *new_info; |
ddb5b488 | 853 | |
40381db7 DS |
854 | new_info = leak_update(bgp_vpn, bn, new_attr, afi, safi, path_vrf, |
855 | &label, 1, path_vrf, bgp_vrf, NULL, | |
960035b2 | 856 | nexthop_self_flag, debug); |
ddb5b488 PZ |
857 | |
858 | /* | |
859 | * Routes actually installed in the vpn RIB must also be | |
860 | * offered to all vrfs (because now they originate from | |
861 | * the vpn RIB). | |
862 | * | |
863 | * Acceptance into other vrfs depends on rt-lists. | |
864 | * Originating vrf will not accept the looped back route | |
865 | * because of loop checking. | |
866 | */ | |
867 | if (new_info) | |
321b4bc9 | 868 | vpn_leak_to_vrf_update(bgp_vrf, new_info); |
ddb5b488 PZ |
869 | } |
870 | ||
4b7e6066 DS |
871 | void vpn_leak_from_vrf_withdraw(struct bgp *bgp_vpn, /* to */ |
872 | struct bgp *bgp_vrf, /* from */ | |
40381db7 | 873 | struct bgp_path_info *path_vrf) /* route */ |
ddb5b488 PZ |
874 | { |
875 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
40381db7 | 876 | struct prefix *p = &path_vrf->net->p; |
ddb5b488 PZ |
877 | afi_t afi = family2afi(p->family); |
878 | safi_t safi = SAFI_MPLS_VPN; | |
40381db7 | 879 | struct bgp_path_info *bpi; |
ddb5b488 PZ |
880 | struct bgp_node *bn; |
881 | const char *debugmsg; | |
960035b2 PZ |
882 | char buf_prefix[PREFIX_STRLEN]; |
883 | ||
884 | if (debug) { | |
885 | prefix2str(p, buf_prefix, sizeof(buf_prefix)); | |
886 | zlog_debug( | |
887 | "%s: entry: leak-from=%s, p=%s, type=%d, sub_type=%d", | |
888 | __func__, bgp_vrf->name_pretty, buf_prefix, | |
40381db7 | 889 | path_vrf->type, path_vrf->sub_type); |
960035b2 | 890 | } |
ddb5b488 | 891 | |
40381db7 DS |
892 | if (path_vrf->sub_type != BGP_ROUTE_NORMAL |
893 | && path_vrf->sub_type != BGP_ROUTE_STATIC | |
894 | && path_vrf->sub_type != BGP_ROUTE_REDISTRIBUTE) { | |
ddb5b488 PZ |
895 | |
896 | if (debug) | |
897 | zlog_debug("%s: wrong sub_type %d", __func__, | |
40381db7 | 898 | path_vrf->sub_type); |
ddb5b488 PZ |
899 | return; |
900 | } | |
901 | if (!bgp_vpn) | |
902 | return; | |
903 | ||
904 | if (!afi) { | |
905 | if (debug) | |
906 | zlog_debug("%s: can't get afi of prefix", __func__); | |
907 | return; | |
908 | } | |
909 | ||
910 | if (!vpn_leak_to_vpn_active(bgp_vrf, afi, &debugmsg)) { | |
911 | if (debug) | |
912 | zlog_debug("%s: skipping: %s", __func__, debugmsg); | |
913 | return; | |
914 | } | |
915 | ||
916 | if (debug) | |
40381db7 | 917 | zlog_debug("%s: withdrawing (path_vrf=%p)", __func__, path_vrf); |
ddb5b488 PZ |
918 | |
919 | bn = bgp_afi_node_get(bgp_vpn->rib[afi][safi], afi, safi, p, | |
920 | &(bgp_vrf->vpn_policy[afi].tovpn_rd)); | |
921 | ||
922 | /* | |
923 | * vrf -> vpn | |
40381db7 | 924 | * match original bpi imported from |
ddb5b488 | 925 | */ |
40381db7 DS |
926 | for (bpi = (bn ? bn->info : NULL); bpi; bpi = bpi->next) { |
927 | if (bpi->extra && bpi->extra->parent == path_vrf) { | |
ddb5b488 PZ |
928 | break; |
929 | } | |
930 | } | |
931 | ||
40381db7 | 932 | if (bpi) { |
ddb5b488 | 933 | /* withdraw from looped vrfs as well */ |
40381db7 | 934 | vpn_leak_to_vrf_withdraw(bgp_vpn, bpi); |
ddb5b488 | 935 | |
40381db7 DS |
936 | bgp_aggregate_decrement(bgp_vpn, p, bpi, afi, safi); |
937 | bgp_path_info_delete(bn, bpi); | |
ddb5b488 PZ |
938 | bgp_process(bgp_vpn, bn, afi, safi); |
939 | } | |
940 | bgp_unlock_node(bn); | |
941 | } | |
942 | ||
943 | void vpn_leak_from_vrf_withdraw_all(struct bgp *bgp_vpn, /* to */ | |
944 | struct bgp *bgp_vrf, /* from */ | |
945 | afi_t afi) | |
946 | { | |
947 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); | |
948 | struct bgp_node *prn; | |
949 | safi_t safi = SAFI_MPLS_VPN; | |
950 | ||
951 | /* | |
40381db7 | 952 | * Walk vpn table, delete bpi with bgp_orig == bgp_vrf |
ddb5b488 PZ |
953 | */ |
954 | for (prn = bgp_table_top(bgp_vpn->rib[afi][safi]); prn; | |
955 | prn = bgp_route_next(prn)) { | |
956 | ||
957 | struct bgp_table *table; | |
958 | struct bgp_node *bn; | |
40381db7 | 959 | struct bgp_path_info *bpi; |
ddb5b488 PZ |
960 | |
961 | /* This is the per-RD table of prefixes */ | |
962 | table = prn->info; | |
963 | ||
964 | if (!table) | |
965 | continue; | |
966 | ||
967 | for (bn = bgp_table_top(table); bn; bn = bgp_route_next(bn)) { | |
968 | ||
969 | char buf[PREFIX2STR_BUFFER]; | |
970 | ||
971 | if (debug && bn->info) { | |
972 | zlog_debug( | |
973 | "%s: looking at prefix %s", __func__, | |
974 | prefix2str(&bn->p, buf, sizeof(buf))); | |
975 | } | |
976 | ||
40381db7 | 977 | for (bpi = bn->info; bpi; bpi = bpi->next) { |
ddb5b488 PZ |
978 | if (debug) |
979 | zlog_debug("%s: type %d, sub_type %d", | |
40381db7 DS |
980 | __func__, bpi->type, |
981 | bpi->sub_type); | |
982 | if (bpi->sub_type != BGP_ROUTE_IMPORTED) | |
ddb5b488 | 983 | continue; |
40381db7 | 984 | if (!bpi->extra) |
ddb5b488 | 985 | continue; |
40381db7 | 986 | if ((struct bgp *)bpi->extra->bgp_orig |
ddb5b488 PZ |
987 | == bgp_vrf) { |
988 | /* delete route */ | |
989 | if (debug) | |
990 | zlog_debug("%s: deleting it\n", | |
991 | __func__); | |
992 | bgp_aggregate_decrement(bgp_vpn, &bn->p, | |
40381db7 DS |
993 | bpi, afi, safi); |
994 | bgp_path_info_delete(bn, bpi); | |
ddb5b488 PZ |
995 | bgp_process(bgp_vpn, bn, afi, safi); |
996 | } | |
997 | } | |
998 | } | |
999 | } | |
1000 | } | |
1001 | ||
1002 | void vpn_leak_from_vrf_update_all(struct bgp *bgp_vpn, /* to */ | |
1003 | struct bgp *bgp_vrf, /* from */ | |
1004 | afi_t afi) | |
1005 | { | |
1006 | struct bgp_node *bn; | |
40381db7 | 1007 | struct bgp_path_info *bpi; |
ddb5b488 PZ |
1008 | int debug = BGP_DEBUG(vpn, VPN_LEAK_FROM_VRF); |
1009 | ||
1010 | if (debug) | |
1011 | zlog_debug("%s: entry, afi=%d, vrf=%s", __func__, afi, | |
960035b2 | 1012 | bgp_vrf->name_pretty); |
ddb5b488 PZ |
1013 | |
1014 | for (bn = bgp_table_top(bgp_vrf->rib[afi][SAFI_UNICAST]); bn; | |
1015 | bn = bgp_route_next(bn)) { | |
1016 | ||
1017 | if (debug) | |
1018 | zlog_debug("%s: node=%p", __func__, bn); | |
1019 | ||
40381db7 | 1020 | for (bpi = bn->info; bpi; bpi = bpi->next) { |
ddb5b488 PZ |
1021 | if (debug) |
1022 | zlog_debug( | |
1023 | "%s: calling vpn_leak_from_vrf_update", | |
1024 | __func__); | |
40381db7 | 1025 | vpn_leak_from_vrf_update(bgp_vpn, bgp_vrf, bpi); |
ddb5b488 PZ |
1026 | } |
1027 | } | |
1028 | } | |
1029 | ||
4b7e6066 DS |
1030 | static void |
1031 | vpn_leak_to_vrf_update_onevrf(struct bgp *bgp_vrf, /* to */ | |
1032 | struct bgp *bgp_vpn, /* from */ | |
40381db7 | 1033 | struct bgp_path_info *path_vpn) /* route */ |
ddb5b488 | 1034 | { |
40381db7 | 1035 | struct prefix *p = &path_vpn->net->p; |
ddb5b488 PZ |
1036 | afi_t afi = family2afi(p->family); |
1037 | ||
ddb5b488 PZ |
1038 | struct attr static_attr = {0}; |
1039 | struct attr *new_attr = NULL; | |
1040 | struct bgp_node *bn; | |
1041 | safi_t safi = SAFI_UNICAST; | |
1042 | const char *debugmsg; | |
1043 | struct prefix nexthop_orig; | |
1044 | mpls_label_t *pLabels = NULL; | |
e37fb4bf | 1045 | uint32_t num_labels = 0; |
960035b2 | 1046 | int nexthop_self_flag = 1; |
40381db7 | 1047 | struct bgp_path_info *bpi_ultimate = NULL; |
513bf8d6 | 1048 | int origin_local = 0; |
d6632478 | 1049 | struct bgp *src_vrf; |
ddb5b488 PZ |
1050 | |
1051 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1052 | ||
b9c7bc5a | 1053 | if (!vpn_leak_from_vpn_active(bgp_vrf, afi, &debugmsg)) { |
ddb5b488 PZ |
1054 | if (debug) |
1055 | zlog_debug("%s: skipping: %s", __func__, debugmsg); | |
1056 | return; | |
1057 | } | |
1058 | ||
1059 | /* Check for intersection of route targets */ | |
1060 | if (!ecom_intersect( | |
1061 | bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_FROMVPN], | |
40381db7 | 1062 | path_vpn->attr->ecommunity)) { |
ddb5b488 PZ |
1063 | |
1064 | return; | |
1065 | } | |
1066 | ||
1067 | if (debug) | |
960035b2 PZ |
1068 | zlog_debug("%s: updating to vrf %s", __func__, |
1069 | bgp_vrf->name_pretty); | |
ddb5b488 | 1070 | |
40381db7 | 1071 | bgp_attr_dup(&static_attr, path_vpn->attr); /* shallow copy */ |
ddb5b488 PZ |
1072 | |
1073 | /* | |
1074 | * Nexthop: stash and clear | |
1075 | * | |
1076 | * Nexthop is valid in context of VPN core, but not in destination vrf. | |
1077 | * Stash it for later label resolution by vrf ingress path and then | |
1078 | * overwrite with 0, i.e., "me", for the sake of vrf advertisement. | |
1079 | */ | |
40381db7 | 1080 | uint8_t nhfamily = NEXTHOP_FAMILY(path_vpn->attr->mp_nexthop_len); |
ddb5b488 | 1081 | |
75cd35c6 PG |
1082 | if (nhfamily != AF_UNSPEC) |
1083 | static_attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
ddb5b488 PZ |
1084 | memset(&nexthop_orig, 0, sizeof(nexthop_orig)); |
1085 | nexthop_orig.family = nhfamily; | |
1086 | ||
1087 | switch (nhfamily) { | |
ddb5b488 PZ |
1088 | case AF_INET: |
1089 | /* save */ | |
40381db7 | 1090 | nexthop_orig.u.prefix4 = path_vpn->attr->mp_nexthop_global_in; |
ddb5b488 | 1091 | nexthop_orig.prefixlen = 32; |
12a844a5 DS |
1092 | |
1093 | if (CHECK_FLAG(bgp_vrf->af_flags[afi][safi], | |
1094 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1095 | static_attr.nexthop.s_addr = | |
1096 | nexthop_orig.u.prefix4.s_addr; | |
1097 | ||
1098 | static_attr.mp_nexthop_global_in = | |
40381db7 | 1099 | path_vpn->attr->mp_nexthop_global_in; |
12a844a5 | 1100 | static_attr.mp_nexthop_len = |
40381db7 | 1101 | path_vpn->attr->mp_nexthop_len; |
12a844a5 | 1102 | } |
ddb5b488 | 1103 | break; |
ddb5b488 PZ |
1104 | case AF_INET6: |
1105 | /* save */ | |
40381db7 | 1106 | nexthop_orig.u.prefix6 = path_vpn->attr->mp_nexthop_global; |
ddb5b488 | 1107 | nexthop_orig.prefixlen = 128; |
12a844a5 DS |
1108 | |
1109 | if (CHECK_FLAG(bgp_vrf->af_flags[afi][safi], | |
1110 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1111 | static_attr.mp_nexthop_global = nexthop_orig.u.prefix6; | |
12a844a5 | 1112 | } |
ddb5b488 PZ |
1113 | break; |
1114 | } | |
1115 | ||
ddb5b488 PZ |
1116 | /* |
1117 | * route map handling | |
ddb5b488 | 1118 | */ |
ddb5b488 | 1119 | if (bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN]) { |
4b7e6066 | 1120 | struct bgp_path_info info; |
ddb5b488 PZ |
1121 | route_map_result_t ret; |
1122 | ||
1123 | memset(&info, 0, sizeof(info)); | |
1124 | info.peer = bgp_vrf->peer_self; | |
1125 | info.attr = &static_attr; | |
1126 | ret = route_map_apply(bgp_vrf->vpn_policy[afi] | |
1127 | .rmap[BGP_VPN_POLICY_DIR_FROMVPN], | |
1128 | p, RMAP_BGP, &info); | |
1129 | if (RMAP_DENYMATCH == ret) { | |
1130 | bgp_attr_flush(&static_attr); /* free any added parts */ | |
1131 | if (debug) | |
1132 | zlog_debug( | |
1133 | "%s: vrf %s vpn-policy route map \"%s\" says DENY, returning", | |
960035b2 | 1134 | __func__, bgp_vrf->name_pretty, |
ddb5b488 PZ |
1135 | bgp_vrf->vpn_policy[afi] |
1136 | .rmap[BGP_VPN_POLICY_DIR_FROMVPN] | |
1137 | ->name); | |
1138 | return; | |
1139 | } | |
960035b2 PZ |
1140 | /* |
1141 | * if route-map changed nexthop, don't nexthop-self on output | |
1142 | */ | |
1143 | if (!CHECK_FLAG(static_attr.rmap_change_flags, | |
1144 | BATTR_RMAP_NEXTHOP_UNCHANGED)) | |
1145 | nexthop_self_flag = 0; | |
ddb5b488 PZ |
1146 | } |
1147 | ||
1148 | new_attr = bgp_attr_intern(&static_attr); | |
1149 | bgp_attr_flush(&static_attr); | |
1150 | ||
1151 | bn = bgp_afi_node_get(bgp_vrf->rib[afi][safi], afi, safi, p, NULL); | |
1152 | ||
1153 | /* | |
1154 | * ensure labels are copied | |
513bf8d6 PZ |
1155 | * |
1156 | * However, there is a special case: if the route originated in | |
1157 | * another local VRF (as opposed to arriving via VPN), then the | |
1158 | * nexthop is reached by hairpinning through this router (me) | |
1159 | * using IP forwarding only (no LSP). Therefore, the route | |
1160 | * imported to the VRF should not have labels attached. Note | |
1161 | * that nexthop tracking is also involved: eliminating the | |
1162 | * labels for these routes enables the non-labeled nexthops | |
1163 | * from the originating VRF to be considered valid for this route. | |
ddb5b488 | 1164 | */ |
12a844a5 DS |
1165 | if (!CHECK_FLAG(bgp_vrf->af_flags[afi][safi], |
1166 | BGP_CONFIG_VRF_TO_VRF_IMPORT)) { | |
1167 | /* work back to original route */ | |
40381db7 DS |
1168 | for (bpi_ultimate = path_vpn; |
1169 | bpi_ultimate->extra && bpi_ultimate->extra->parent; | |
1170 | bpi_ultimate = bpi_ultimate->extra->parent) | |
12a844a5 | 1171 | ; |
513bf8d6 | 1172 | |
12a844a5 DS |
1173 | /* |
1174 | * if original route was unicast, | |
1175 | * then it did not arrive over vpn | |
1176 | */ | |
40381db7 | 1177 | if (bpi_ultimate->net) { |
12a844a5 | 1178 | struct bgp_table *table; |
513bf8d6 | 1179 | |
40381db7 | 1180 | table = bgp_node_table(bpi_ultimate->net); |
12a844a5 DS |
1181 | if (table && (table->safi == SAFI_UNICAST)) |
1182 | origin_local = 1; | |
1183 | } | |
513bf8d6 | 1184 | |
12a844a5 | 1185 | /* copy labels */ |
40381db7 DS |
1186 | if (!origin_local && path_vpn->extra |
1187 | && path_vpn->extra->num_labels) { | |
1188 | num_labels = path_vpn->extra->num_labels; | |
12a844a5 DS |
1189 | if (num_labels > BGP_MAX_LABELS) |
1190 | num_labels = BGP_MAX_LABELS; | |
40381db7 | 1191 | pLabels = path_vpn->extra->label; |
12a844a5 | 1192 | } |
ddb5b488 | 1193 | } |
513bf8d6 | 1194 | |
ddb5b488 PZ |
1195 | if (debug) { |
1196 | char buf_prefix[PREFIX_STRLEN]; | |
1197 | prefix2str(p, buf_prefix, sizeof(buf_prefix)); | |
1198 | zlog_debug("%s: pfx %s: num_labels %d", __func__, buf_prefix, | |
1199 | num_labels); | |
1200 | } | |
1201 | ||
44338987 | 1202 | /* |
1d4e8b0d DS |
1203 | * For VRF-2-VRF route-leaking, |
1204 | * the source will be the originating VRF. | |
44338987 | 1205 | */ |
40381db7 DS |
1206 | if (path_vpn->extra && path_vpn->extra->bgp_orig) |
1207 | src_vrf = path_vpn->extra->bgp_orig; | |
d6632478 PZ |
1208 | else |
1209 | src_vrf = bgp_vpn; | |
1210 | ||
40381db7 DS |
1211 | leak_update(bgp_vrf, bn, new_attr, afi, safi, path_vpn, pLabels, |
1212 | num_labels, path_vpn, /* parent */ | |
1213 | src_vrf, &nexthop_orig, nexthop_self_flag, debug); | |
ddb5b488 PZ |
1214 | } |
1215 | ||
4b7e6066 | 1216 | void vpn_leak_to_vrf_update(struct bgp *bgp_vpn, /* from */ |
40381db7 | 1217 | struct bgp_path_info *path_vpn) /* route */ |
ddb5b488 PZ |
1218 | { |
1219 | struct listnode *mnode, *mnnode; | |
1220 | struct bgp *bgp; | |
1221 | ||
1222 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1223 | ||
1224 | if (debug) | |
40381db7 | 1225 | zlog_debug("%s: start (path_vpn=%p)", __func__, path_vpn); |
ddb5b488 PZ |
1226 | |
1227 | /* Loop over VRFs */ | |
1228 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
1229 | ||
40381db7 DS |
1230 | if (!path_vpn->extra |
1231 | || path_vpn->extra->bgp_orig != bgp) { /* no loop */ | |
1232 | vpn_leak_to_vrf_update_onevrf(bgp, bgp_vpn, path_vpn); | |
ddb5b488 PZ |
1233 | } |
1234 | } | |
1235 | } | |
1236 | ||
4b7e6066 | 1237 | void vpn_leak_to_vrf_withdraw(struct bgp *bgp_vpn, /* from */ |
40381db7 | 1238 | struct bgp_path_info *path_vpn) /* route */ |
ddb5b488 | 1239 | { |
1b3510a0 PZ |
1240 | struct prefix *p; |
1241 | afi_t afi; | |
ddb5b488 PZ |
1242 | safi_t safi = SAFI_UNICAST; |
1243 | struct bgp *bgp; | |
1244 | struct listnode *mnode, *mnnode; | |
ddb5b488 | 1245 | struct bgp_node *bn; |
40381db7 | 1246 | struct bgp_path_info *bpi; |
ddb5b488 | 1247 | const char *debugmsg; |
960035b2 | 1248 | char buf_prefix[PREFIX_STRLEN]; |
ddb5b488 PZ |
1249 | |
1250 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
1251 | ||
960035b2 | 1252 | if (debug) { |
40381db7 DS |
1253 | prefix2str(&path_vpn->net->p, buf_prefix, sizeof(buf_prefix)); |
1254 | zlog_debug("%s: entry: p=%s, type=%d, sub_type=%d", __func__, | |
1255 | buf_prefix, path_vpn->type, path_vpn->sub_type); | |
960035b2 PZ |
1256 | } |
1257 | ||
ddb5b488 | 1258 | if (debug) |
40381db7 | 1259 | zlog_debug("%s: start (path_vpn=%p)", __func__, path_vpn); |
ddb5b488 | 1260 | |
40381db7 | 1261 | if (!path_vpn->net) { |
56c2c080 | 1262 | #if ENABLE_BGP_VNC |
40381db7 DS |
1263 | /* BGP_ROUTE_RFP routes do not have path_vpn->net set (yet) */ |
1264 | if (path_vpn->type == ZEBRA_ROUTE_BGP | |
1265 | && path_vpn->sub_type == BGP_ROUTE_RFP) { | |
1b3510a0 PZ |
1266 | |
1267 | return; | |
1268 | } | |
56c2c080 | 1269 | #endif |
1b3510a0 | 1270 | if (debug) |
40381db7 DS |
1271 | zlog_debug( |
1272 | "%s: path_vpn->net unexpectedly NULL, no prefix, bailing", | |
1b3510a0 PZ |
1273 | __func__); |
1274 | return; | |
1275 | } | |
1276 | ||
40381db7 | 1277 | p = &path_vpn->net->p; |
1b3510a0 | 1278 | afi = family2afi(p->family); |
ddb5b488 PZ |
1279 | |
1280 | /* Loop over VRFs */ | |
1281 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
b9c7bc5a | 1282 | if (!vpn_leak_from_vpn_active(bgp, afi, &debugmsg)) { |
ddb5b488 PZ |
1283 | if (debug) |
1284 | zlog_debug("%s: skipping: %s", __func__, | |
1285 | debugmsg); | |
1286 | continue; | |
1287 | } | |
1288 | ||
1289 | /* Check for intersection of route targets */ | |
1290 | if (!ecom_intersect(bgp->vpn_policy[afi] | |
1291 | .rtlist[BGP_VPN_POLICY_DIR_FROMVPN], | |
40381db7 | 1292 | path_vpn->attr->ecommunity)) { |
ddb5b488 PZ |
1293 | |
1294 | continue; | |
1295 | } | |
1296 | ||
1297 | if (debug) | |
1298 | zlog_debug("%s: withdrawing from vrf %s", __func__, | |
960035b2 | 1299 | bgp->name_pretty); |
ddb5b488 PZ |
1300 | |
1301 | bn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, p, NULL); | |
40381db7 DS |
1302 | for (bpi = (bn ? bn->info : NULL); bpi; bpi = bpi->next) { |
1303 | if (bpi->extra | |
1304 | && (struct bgp_path_info *)bpi->extra->parent | |
1305 | == path_vpn) { | |
ddb5b488 PZ |
1306 | break; |
1307 | } | |
1308 | } | |
1309 | ||
40381db7 | 1310 | if (bpi) { |
ddb5b488 | 1311 | if (debug) |
40381db7 DS |
1312 | zlog_debug("%s: deleting bpi %p", __func__, |
1313 | bpi); | |
1314 | bgp_aggregate_decrement(bgp, p, bpi, afi, safi); | |
1315 | bgp_path_info_delete(bn, bpi); | |
ddb5b488 PZ |
1316 | bgp_process(bgp, bn, afi, safi); |
1317 | } | |
1318 | bgp_unlock_node(bn); | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | void vpn_leak_to_vrf_withdraw_all(struct bgp *bgp_vrf, /* to */ | |
1323 | afi_t afi) | |
1324 | { | |
1325 | struct bgp_node *bn; | |
40381db7 | 1326 | struct bgp_path_info *bpi; |
ddb5b488 PZ |
1327 | safi_t safi = SAFI_UNICAST; |
1328 | int debug = BGP_DEBUG(vpn, VPN_LEAK_TO_VRF); | |
ddb5b488 PZ |
1329 | |
1330 | if (debug) | |
1331 | zlog_debug("%s: entry", __func__); | |
1332 | /* | |
40381db7 | 1333 | * Walk vrf table, delete bpi with bgp_orig in a different vrf |
ddb5b488 PZ |
1334 | */ |
1335 | for (bn = bgp_table_top(bgp_vrf->rib[afi][safi]); bn; | |
1336 | bn = bgp_route_next(bn)) { | |
1337 | ||
40381db7 DS |
1338 | for (bpi = bn->info; bpi; bpi = bpi->next) { |
1339 | if (bpi->extra && bpi->extra->bgp_orig != bgp_vrf) { | |
ddb5b488 PZ |
1340 | |
1341 | /* delete route */ | |
40381db7 | 1342 | bgp_aggregate_decrement(bgp_vrf, &bn->p, bpi, |
ddb5b488 | 1343 | afi, safi); |
40381db7 | 1344 | bgp_path_info_delete(bn, bpi); |
ddb5b488 PZ |
1345 | bgp_process(bgp_vrf, bn, afi, safi); |
1346 | } | |
1347 | } | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | void vpn_leak_to_vrf_update_all(struct bgp *bgp_vrf, /* to */ | |
1352 | struct bgp *bgp_vpn, /* from */ | |
1353 | afi_t afi) | |
1354 | { | |
1355 | struct prefix_rd prd; | |
1356 | struct bgp_node *prn; | |
1357 | safi_t safi = SAFI_MPLS_VPN; | |
1358 | ||
3bd70bf8 | 1359 | assert(bgp_vpn); |
73aed584 | 1360 | |
ddb5b488 PZ |
1361 | /* |
1362 | * Walk vpn table | |
1363 | */ | |
1364 | for (prn = bgp_table_top(bgp_vpn->rib[afi][safi]); prn; | |
1365 | prn = bgp_route_next(prn)) { | |
1366 | ||
1367 | struct bgp_table *table; | |
1368 | struct bgp_node *bn; | |
40381db7 | 1369 | struct bgp_path_info *bpi; |
ddb5b488 PZ |
1370 | |
1371 | memset(&prd, 0, sizeof(prd)); | |
1372 | prd.family = AF_UNSPEC; | |
1373 | prd.prefixlen = 64; | |
1374 | memcpy(prd.val, prn->p.u.val, 8); | |
1375 | ||
1376 | /* This is the per-RD table of prefixes */ | |
1377 | table = prn->info; | |
1378 | ||
1379 | if (!table) | |
1380 | continue; | |
1381 | ||
1382 | for (bn = bgp_table_top(table); bn; bn = bgp_route_next(bn)) { | |
1383 | ||
40381db7 | 1384 | for (bpi = bn->info; bpi; bpi = bpi->next) { |
ddb5b488 | 1385 | |
40381db7 DS |
1386 | if (bpi->extra |
1387 | && bpi->extra->bgp_orig == bgp_vrf) | |
ddb5b488 PZ |
1388 | continue; |
1389 | ||
1390 | vpn_leak_to_vrf_update_onevrf(bgp_vrf, bgp_vpn, | |
40381db7 | 1391 | bpi); |
ddb5b488 PZ |
1392 | } |
1393 | } | |
1394 | } | |
1395 | } | |
1396 | ||
d92a55df PZ |
1397 | /* |
1398 | * This function is called for definition/deletion/change to a route-map | |
1399 | */ | |
ddb5b488 PZ |
1400 | static void vpn_policy_routemap_update(struct bgp *bgp, const char *rmap_name) |
1401 | { | |
1402 | int debug = BGP_DEBUG(vpn, VPN_LEAK_RMAP_EVENT); | |
1403 | afi_t afi; | |
1404 | struct route_map *rmap; | |
1405 | ||
1406 | if (bgp->inst_type != BGP_INSTANCE_TYPE_DEFAULT | |
1407 | && bgp->inst_type != BGP_INSTANCE_TYPE_VRF) { | |
1408 | ||
1409 | return; | |
1410 | } | |
1411 | ||
1412 | rmap = route_map_lookup_by_name(rmap_name); /* NULL if deleted */ | |
1413 | ||
1414 | for (afi = 0; afi < AFI_MAX; ++afi) { | |
1415 | ||
d92a55df PZ |
1416 | if (bgp->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_TOVPN] |
1417 | && !strcmp(rmap_name, | |
ddb5b488 PZ |
1418 | bgp->vpn_policy[afi] |
1419 | .rmap_name[BGP_VPN_POLICY_DIR_TOVPN])) { | |
1420 | ||
1421 | if (debug) | |
1422 | zlog_debug( | |
1423 | "%s: rmap \"%s\" matches vrf-policy tovpn for as %d afi %s", | |
1424 | __func__, rmap_name, bgp->as, | |
1425 | afi2str(afi)); | |
1426 | ||
1427 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, afi, | |
1428 | bgp_get_default(), bgp); | |
1429 | if (debug) | |
1430 | zlog_debug("%s: after vpn_leak_prechange", | |
1431 | __func__); | |
1432 | ||
d92a55df PZ |
1433 | /* in case of definition/deletion */ |
1434 | bgp->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN] = | |
1435 | rmap; | |
ddb5b488 PZ |
1436 | |
1437 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN, afi, | |
1438 | bgp_get_default(), bgp); | |
d92a55df | 1439 | |
ddb5b488 PZ |
1440 | if (debug) |
1441 | zlog_debug("%s: after vpn_leak_postchange", | |
1442 | __func__); | |
1443 | } | |
1444 | ||
d92a55df PZ |
1445 | if (bgp->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_FROMVPN] |
1446 | && !strcmp(rmap_name, | |
1447 | bgp->vpn_policy[afi] | |
1448 | .rmap_name[BGP_VPN_POLICY_DIR_FROMVPN])) { | |
b9c7bc5a PZ |
1449 | |
1450 | if (debug) { | |
1451 | zlog_debug("%s: rmap \"%s\" matches vrf-policy fromvpn for as %d afi %s", | |
ddb5b488 PZ |
1452 | __func__, rmap_name, bgp->as, |
1453 | afi2str(afi)); | |
b9c7bc5a | 1454 | } |
ddb5b488 PZ |
1455 | |
1456 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_FROMVPN, afi, | |
1457 | bgp_get_default(), bgp); | |
1458 | ||
d92a55df PZ |
1459 | /* in case of definition/deletion */ |
1460 | bgp->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN] = | |
1461 | rmap; | |
ddb5b488 PZ |
1462 | |
1463 | vpn_leak_postchange(BGP_VPN_POLICY_DIR_FROMVPN, afi, | |
1464 | bgp_get_default(), bgp); | |
1465 | } | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | void vpn_policy_routemap_event(const char *rmap_name) | |
1470 | { | |
1471 | int debug = BGP_DEBUG(vpn, VPN_LEAK_RMAP_EVENT); | |
1472 | struct listnode *mnode, *mnnode; | |
1473 | struct bgp *bgp; | |
1474 | ||
1475 | if (debug) | |
1476 | zlog_debug("%s: entry", __func__); | |
1477 | ||
1478 | if (bm->bgp == NULL) /* may be called during cleanup */ | |
1479 | return; | |
1480 | ||
1481 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) | |
1482 | vpn_policy_routemap_update(bgp, rmap_name); | |
1483 | } | |
1484 | ||
1d4e8b0d | 1485 | void vrf_import_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp, |
44338987 | 1486 | afi_t afi, safi_t safi) |
1487 | { | |
1488 | const char *export_name; | |
1489 | vpn_policy_direction_t idir, edir; | |
1490 | char *vname; | |
1491 | char buf[1000]; | |
1492 | struct ecommunity *ecom; | |
1493 | bool first_export = false; | |
1494 | ||
5742e42b | 1495 | export_name = to_bgp->name ? to_bgp->name : VRF_DEFAULT_NAME; |
44338987 | 1496 | idir = BGP_VPN_POLICY_DIR_FROMVPN; |
1497 | edir = BGP_VPN_POLICY_DIR_TOVPN; | |
1498 | ||
1d4e8b0d DS |
1499 | /* |
1500 | * Cross-ref both VRFs. Also, note if this is the first time | |
44338987 | 1501 | * any VRF is importing from "import_vrf". |
1502 | */ | |
a8dadcf6 | 1503 | vname = (from_bgp->name ? XSTRDUP(MTYPE_TMP, from_bgp->name) |
5742e42b | 1504 | : XSTRDUP(MTYPE_TMP, VRF_DEFAULT_NAME)); |
a8dadcf6 | 1505 | |
1d4e8b0d | 1506 | listnode_add(to_bgp->vpn_policy[afi].import_vrf, vname); |
44338987 | 1507 | |
1d4e8b0d | 1508 | if (!listcount(from_bgp->vpn_policy[afi].export_vrf)) |
44338987 | 1509 | first_export = true; |
1510 | vname = XSTRDUP(MTYPE_TMP, export_name); | |
1d4e8b0d | 1511 | listnode_add(from_bgp->vpn_policy[afi].export_vrf, vname); |
44338987 | 1512 | |
1513 | /* Update import RT for current VRF using export RT of the VRF we're | |
1514 | * importing from. First though, make sure "import_vrf" has that | |
1515 | * set. | |
1516 | */ | |
1517 | if (first_export) { | |
1d4e8b0d DS |
1518 | form_auto_rd(from_bgp->router_id, from_bgp->vrf_rd_id, |
1519 | &from_bgp->vrf_prd_auto); | |
1520 | from_bgp->vpn_policy[afi].tovpn_rd = from_bgp->vrf_prd_auto; | |
1521 | SET_FLAG(from_bgp->vpn_policy[afi].flags, | |
44338987 | 1522 | BGP_VPN_POLICY_TOVPN_RD_SET); |
1d4e8b0d | 1523 | prefix_rd2str(&from_bgp->vpn_policy[afi].tovpn_rd, |
44338987 | 1524 | buf, sizeof(buf)); |
1d4e8b0d | 1525 | from_bgp->vpn_policy[afi].rtlist[edir] = |
44338987 | 1526 | ecommunity_str2com(buf, ECOMMUNITY_ROUTE_TARGET, 0); |
1d4e8b0d | 1527 | SET_FLAG(from_bgp->af_flags[afi][safi], |
44338987 | 1528 | BGP_CONFIG_VRF_TO_VRF_EXPORT); |
13b7e7f0 DS |
1529 | from_bgp->vpn_policy[afi].tovpn_label = |
1530 | BGP_PREVENT_VRF_2_VRF_LEAK; | |
44338987 | 1531 | } |
1d4e8b0d DS |
1532 | ecom = from_bgp->vpn_policy[afi].rtlist[edir]; |
1533 | if (to_bgp->vpn_policy[afi].rtlist[idir]) | |
1534 | to_bgp->vpn_policy[afi].rtlist[idir] = | |
1535 | ecommunity_merge(to_bgp->vpn_policy[afi] | |
44338987 | 1536 | .rtlist[idir], ecom); |
1537 | else | |
1d4e8b0d DS |
1538 | to_bgp->vpn_policy[afi].rtlist[idir] = ecommunity_dup(ecom); |
1539 | SET_FLAG(to_bgp->af_flags[afi][safi], BGP_CONFIG_VRF_TO_VRF_IMPORT); | |
44338987 | 1540 | |
1541 | /* Does "import_vrf" first need to export its routes or that | |
1542 | * is already done and we just need to import those routes | |
1543 | * from the global table? | |
1544 | */ | |
1545 | if (first_export) | |
1d4e8b0d | 1546 | vpn_leak_postchange(edir, afi, bgp_get_default(), from_bgp); |
44338987 | 1547 | else |
1d4e8b0d | 1548 | vpn_leak_postchange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1549 | } |
1550 | ||
1d4e8b0d | 1551 | void vrf_unimport_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp, |
44338987 | 1552 | afi_t afi, safi_t safi) |
1553 | { | |
a8dadcf6 | 1554 | const char *export_name, *tmp_name; |
44338987 | 1555 | vpn_policy_direction_t idir, edir; |
1556 | char *vname; | |
1557 | struct ecommunity *ecom; | |
1558 | struct listnode *node; | |
1559 | ||
5742e42b DS |
1560 | export_name = to_bgp->name ? to_bgp->name : VRF_DEFAULT_NAME; |
1561 | tmp_name = from_bgp->name ? from_bgp->name : VRF_DEFAULT_NAME; | |
44338987 | 1562 | idir = BGP_VPN_POLICY_DIR_FROMVPN; |
1563 | edir = BGP_VPN_POLICY_DIR_TOVPN; | |
1564 | ||
1565 | /* Were we importing from "import_vrf"? */ | |
1d4e8b0d DS |
1566 | for (ALL_LIST_ELEMENTS_RO(to_bgp->vpn_policy[afi].import_vrf, node, |
1567 | vname)) { | |
a8dadcf6 | 1568 | if (strcmp(vname, tmp_name) == 0) |
020a3f60 | 1569 | break; |
44338987 | 1570 | } |
1d4e8b0d DS |
1571 | |
1572 | /* | |
1573 | * We do not check in the cli if the passed in bgp | |
1574 | * instance is actually imported into us before | |
1575 | * we call this function. As such if we do not | |
1576 | * find this in the import_vrf list than | |
1577 | * we just need to return safely. | |
1578 | */ | |
44338987 | 1579 | if (!vname) |
1580 | return; | |
1581 | ||
1582 | /* Remove "import_vrf" from our import list. */ | |
1d4e8b0d | 1583 | listnode_delete(to_bgp->vpn_policy[afi].import_vrf, vname); |
44338987 | 1584 | XFREE(MTYPE_TMP, vname); |
1585 | ||
1586 | /* Remove routes imported from "import_vrf". */ | |
1587 | /* TODO: In the current logic, we have to first remove all | |
1588 | * imported routes and then (if needed) import back routes | |
1589 | */ | |
1d4e8b0d | 1590 | vpn_leak_prechange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1591 | |
1d4e8b0d DS |
1592 | if (to_bgp->vpn_policy[afi].import_vrf->count == 0) { |
1593 | UNSET_FLAG(to_bgp->af_flags[afi][safi], | |
44338987 | 1594 | BGP_CONFIG_VRF_TO_VRF_IMPORT); |
1d4e8b0d | 1595 | ecommunity_free(&to_bgp->vpn_policy[afi].rtlist[idir]); |
44338987 | 1596 | } else { |
1d4e8b0d DS |
1597 | ecom = from_bgp->vpn_policy[afi].rtlist[edir]; |
1598 | ecommunity_del_val(to_bgp->vpn_policy[afi].rtlist[idir], | |
44338987 | 1599 | (struct ecommunity_val *)ecom->val); |
1d4e8b0d | 1600 | vpn_leak_postchange(idir, afi, bgp_get_default(), to_bgp); |
44338987 | 1601 | } |
1602 | ||
89d59347 DS |
1603 | /* |
1604 | * What? | |
1605 | * So SA is assuming that since the ALL_LIST_ELEMENTS_RO | |
1606 | * below is checking for NULL that export_vrf can be | |
1607 | * NULL, consequently it is complaining( like a cabbage ) | |
1608 | * that we could dereference and crash in the listcount(..) | |
1609 | * check below. | |
1610 | * So make it happy, under protest, with liberty and justice | |
1611 | * for all. | |
1612 | */ | |
1d4e8b0d | 1613 | assert(from_bgp->vpn_policy[afi].export_vrf); |
89d59347 | 1614 | |
44338987 | 1615 | /* Remove us from "import_vrf's" export list. If no other VRF |
1616 | * is importing from "import_vrf", cleanup appropriately. | |
1617 | */ | |
1d4e8b0d | 1618 | for (ALL_LIST_ELEMENTS_RO(from_bgp->vpn_policy[afi].export_vrf, |
44338987 | 1619 | node, vname)) { |
1620 | if (strcmp(vname, export_name) == 0) | |
1621 | break; | |
1622 | } | |
1623 | ||
1d4e8b0d DS |
1624 | /* |
1625 | * If we have gotten to this point then the vname must | |
1626 | * exist. If not, we are in a world of trouble and | |
1627 | * have slag sitting around. | |
1628 | * | |
1629 | * import_vrf and export_vrf must match in having | |
1630 | * the in/out names as appropriate. | |
1631 | */ | |
1632 | assert(vname); | |
1633 | ||
1634 | listnode_delete(from_bgp->vpn_policy[afi].export_vrf, vname); | |
44338987 | 1635 | XFREE(MTYPE_TMP, vname); |
1636 | ||
1d4e8b0d DS |
1637 | if (!listcount(from_bgp->vpn_policy[afi].export_vrf)) { |
1638 | vpn_leak_prechange(edir, afi, bgp_get_default(), from_bgp); | |
1639 | ecommunity_free(&from_bgp->vpn_policy[afi].rtlist[edir]); | |
1640 | UNSET_FLAG(from_bgp->af_flags[afi][safi], | |
44338987 | 1641 | BGP_CONFIG_VRF_TO_VRF_EXPORT); |
1d4e8b0d | 1642 | memset(&from_bgp->vpn_policy[afi].tovpn_rd, 0, |
44338987 | 1643 | sizeof(struct prefix_rd)); |
1d4e8b0d | 1644 | UNSET_FLAG(from_bgp->vpn_policy[afi].flags, |
44338987 | 1645 | BGP_VPN_POLICY_TOVPN_RD_SET); |
13b7e7f0 DS |
1646 | from_bgp->vpn_policy[afi].tovpn_label = MPLS_LABEL_NONE; |
1647 | ||
44338987 | 1648 | } |
1649 | } | |
1650 | ||
718e3744 | 1651 | /* For testing purpose, static route of MPLS-VPN. */ |
1652 | DEFUN (vpnv4_network, | |
1653 | vpnv4_network_cmd, | |
d114b977 | 1654 | "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
718e3744 | 1655 | "Specify a network to announce via BGP\n" |
0c7b1b01 | 1656 | "IPv4 prefix\n" |
718e3744 | 1657 | "Specify Route Distinguisher\n" |
1658 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1659 | "VPN NLRI label (tag)\n" |
1660 | "VPN NLRI label (tag)\n" | |
1661 | "Label value\n") | |
718e3744 | 1662 | { |
d62a17ae | 1663 | int idx_ipv4_prefixlen = 1; |
1664 | int idx_ext_community = 3; | |
1665 | int idx_label = 5; | |
1666 | return bgp_static_set_safi( | |
1667 | AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, | |
1668 | argv[idx_ext_community]->arg, argv[idx_label]->arg, NULL, 0, | |
1669 | NULL, NULL, NULL, NULL); | |
137446f9 LB |
1670 | } |
1671 | ||
1672 | DEFUN (vpnv4_network_route_map, | |
1673 | vpnv4_network_route_map_cmd, | |
d114b977 | 1674 | "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) route-map WORD", |
137446f9 | 1675 | "Specify a network to announce via BGP\n" |
0c7b1b01 | 1676 | "IPv4 prefix\n" |
137446f9 LB |
1677 | "Specify Route Distinguisher\n" |
1678 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1679 | "VPN NLRI label (tag)\n" |
1680 | "VPN NLRI label (tag)\n" | |
1681 | "Label value\n" | |
137446f9 LB |
1682 | "route map\n" |
1683 | "route map name\n") | |
1684 | { | |
d62a17ae | 1685 | int idx_ipv4_prefixlen = 1; |
1686 | int idx_ext_community = 3; | |
1687 | int idx_label = 5; | |
1688 | int idx_word_2 = 7; | |
1689 | return bgp_static_set_safi( | |
1690 | AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, | |
1691 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1692 | argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL); | |
718e3744 | 1693 | } |
1694 | ||
1695 | /* For testing purpose, static route of MPLS-VPN. */ | |
1696 | DEFUN (no_vpnv4_network, | |
1697 | no_vpnv4_network_cmd, | |
d114b977 | 1698 | "no network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
718e3744 | 1699 | NO_STR |
1700 | "Specify a network to announce via BGP\n" | |
0c7b1b01 | 1701 | "IPv4 prefix\n" |
718e3744 | 1702 | "Specify Route Distinguisher\n" |
1703 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1704 | "VPN NLRI label (tag)\n" |
1705 | "VPN NLRI label (tag)\n" | |
1706 | "Label value\n") | |
718e3744 | 1707 | { |
d62a17ae | 1708 | int idx_ipv4_prefixlen = 2; |
1709 | int idx_ext_community = 4; | |
1710 | int idx_label = 6; | |
1711 | return bgp_static_unset_safi(AFI_IP, SAFI_MPLS_VPN, vty, | |
1712 | argv[idx_ipv4_prefixlen]->arg, | |
1713 | argv[idx_ext_community]->arg, | |
1714 | argv[idx_label]->arg, 0, NULL, NULL, NULL); | |
718e3744 | 1715 | } |
1716 | ||
c286be96 LX |
1717 | DEFUN (vpnv6_network, |
1718 | vpnv6_network_cmd, | |
d114b977 | 1719 | "network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) [route-map WORD]", |
c286be96 LX |
1720 | "Specify a network to announce via BGP\n" |
1721 | "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n" | |
1722 | "Specify Route Distinguisher\n" | |
1723 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1724 | "VPN NLRI label (tag)\n" |
1725 | "VPN NLRI label (tag)\n" | |
1726 | "Label value\n" | |
11daee81 DS |
1727 | "route map\n" |
1728 | "route map name\n") | |
c286be96 | 1729 | { |
d62a17ae | 1730 | int idx_ipv6_prefix = 1; |
1731 | int idx_ext_community = 3; | |
1732 | int idx_label = 5; | |
1733 | int idx_word_2 = 7; | |
1734 | if (argc == 8) | |
1735 | return bgp_static_set_safi( | |
1736 | AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, | |
1737 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1738 | argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL); | |
1739 | else | |
1740 | return bgp_static_set_safi( | |
1741 | AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, | |
1742 | argv[idx_ext_community]->arg, argv[idx_label]->arg, | |
1743 | NULL, 0, NULL, NULL, NULL, NULL); | |
c286be96 LX |
1744 | } |
1745 | ||
1746 | /* For testing purpose, static route of MPLS-VPN. */ | |
1747 | DEFUN (no_vpnv6_network, | |
1748 | no_vpnv6_network_cmd, | |
d114b977 | 1749 | "no network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)", |
c286be96 LX |
1750 | NO_STR |
1751 | "Specify a network to announce via BGP\n" | |
1752 | "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n" | |
1753 | "Specify Route Distinguisher\n" | |
1754 | "VPN Route Distinguisher\n" | |
fb1d2a2d LB |
1755 | "VPN NLRI label (tag)\n" |
1756 | "VPN NLRI label (tag)\n" | |
1757 | "Label value\n") | |
c286be96 | 1758 | { |
d62a17ae | 1759 | int idx_ipv6_prefix = 2; |
1760 | int idx_ext_community = 4; | |
1761 | int idx_label = 6; | |
1762 | return bgp_static_unset_safi(AFI_IP6, SAFI_MPLS_VPN, vty, | |
1763 | argv[idx_ipv6_prefix]->arg, | |
1764 | argv[idx_ext_community]->arg, | |
1765 | argv[idx_label]->arg, 0, NULL, NULL, NULL); | |
c286be96 LX |
1766 | } |
1767 | ||
d62a17ae | 1768 | int bgp_show_mpls_vpn(struct vty *vty, afi_t afi, struct prefix_rd *prd, |
1769 | enum bgp_show_type type, void *output_arg, int tags, | |
9f049418 | 1770 | bool use_json) |
718e3744 | 1771 | { |
d62a17ae | 1772 | struct bgp *bgp; |
1773 | struct bgp_table *table; | |
d62a17ae | 1774 | |
1775 | bgp = bgp_get_default(); | |
1776 | if (bgp == NULL) { | |
1777 | if (!use_json) | |
1778 | vty_out(vty, "No BGP process is configured\n"); | |
16307668 RW |
1779 | else |
1780 | vty_out(vty, "{}\n"); | |
d62a17ae | 1781 | return CMD_WARNING; |
1782 | } | |
1ae44dfc | 1783 | table = bgp->rib[afi][SAFI_MPLS_VPN]; |
a4d82a8a PZ |
1784 | return bgp_show_table_rd(vty, bgp, SAFI_MPLS_VPN, table, prd, type, |
1785 | output_arg, use_json); | |
718e3744 | 1786 | } |
1787 | ||
4f280b15 LB |
1788 | DEFUN (show_bgp_ip_vpn_all_rd, |
1789 | show_bgp_ip_vpn_all_rd_cmd, | |
d114b977 | 1790 | "show bgp "BGP_AFI_CMD_STR" vpn all [rd ASN:NN_OR_IP-ADDRESS:NN] [json]", |
e3e29b32 LB |
1791 | SHOW_STR |
1792 | BGP_STR | |
05e588f4 | 1793 | BGP_VPNVX_HELP_STR |
e3e29b32 | 1794 | "Display VPN NLRI specific information\n" |
af8528fa | 1795 | "Display VPN NLRI specific information\n" |
e3e29b32 LB |
1796 | "Display information for a route distinguisher\n" |
1797 | "VPN Route Distinguisher\n" | |
1798 | JSON_STR) | |
1799 | { | |
d62a17ae | 1800 | int ret; |
1801 | struct prefix_rd prd; | |
1802 | afi_t afi; | |
1803 | int idx = 0; | |
1804 | ||
1805 | if (argv_find_and_parse_afi(argv, argc, &idx, &afi)) { | |
3d7c4cd7 | 1806 | if (argv_find(argv, argc, "rd", &idx)) { |
a4d82a8a | 1807 | ret = str2prefix_rd(argv[idx + 1]->arg, &prd); |
d62a17ae | 1808 | if (!ret) { |
1809 | vty_out(vty, | |
1810 | "%% Malformed Route Distinguisher\n"); | |
1811 | return CMD_WARNING; | |
1812 | } | |
1813 | return bgp_show_mpls_vpn(vty, afi, &prd, | |
1814 | bgp_show_type_normal, NULL, 0, | |
1815 | use_json(argc, argv)); | |
1816 | } else { | |
1817 | return bgp_show_mpls_vpn(vty, afi, NULL, | |
1818 | bgp_show_type_normal, NULL, 0, | |
1819 | use_json(argc, argv)); | |
1820 | } | |
1821 | } | |
1822 | return CMD_SUCCESS; | |
718e3744 | 1823 | } |
1824 | ||
af8528fa LB |
1825 | ALIAS(show_bgp_ip_vpn_all_rd, |
1826 | show_bgp_ip_vpn_rd_cmd, | |
1827 | "show bgp "BGP_AFI_CMD_STR" vpn rd ASN:NN_OR_IP-ADDRESS:NN [json]", | |
1828 | SHOW_STR | |
1829 | BGP_STR | |
1830 | BGP_VPNVX_HELP_STR | |
1831 | "Display VPN NLRI specific information\n" | |
1832 | "Display information for a route distinguisher\n" | |
1833 | "VPN Route Distinguisher\n" | |
1834 | JSON_STR) | |
1835 | ||
1836 | #ifdef KEEP_OLD_VPN_COMMANDS | |
3f227172 PG |
1837 | DEFUN (show_ip_bgp_vpn_rd, |
1838 | show_ip_bgp_vpn_rd_cmd, | |
af8528fa | 1839 | "show ip bgp "BGP_AFI_CMD_STR" vpn rd ASN:NN_OR_IP-ADDRESS:NN", |
718e3744 | 1840 | SHOW_STR |
1841 | IP_STR | |
1842 | BGP_STR | |
4f280b15 | 1843 | BGP_AFI_HELP_STR |
3517059b | 1844 | "Address Family modifier\n" |
718e3744 | 1845 | "Display information for a route distinguisher\n" |
1846 | "VPN Route Distinguisher\n") | |
1847 | { | |
d62a17ae | 1848 | int idx_ext_community = argc - 1; |
1849 | int ret; | |
1850 | struct prefix_rd prd; | |
1851 | afi_t afi; | |
1852 | int idx = 0; | |
1853 | ||
1854 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1855 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
1856 | if (!ret) { | |
1857 | vty_out(vty, "%% Malformed Route Distinguisher\n"); | |
1858 | return CMD_WARNING; | |
1859 | } | |
1860 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_normal, | |
1861 | NULL, 0, 0); | |
1862 | } | |
1863 | return CMD_SUCCESS; | |
1864 | } | |
718e3744 | 1865 | |
4f280b15 LB |
1866 | DEFUN (show_ip_bgp_vpn_all, |
1867 | show_ip_bgp_vpn_all_cmd, | |
1868 | "show [ip] bgp <vpnv4|vpnv6>", | |
1869 | SHOW_STR | |
1870 | IP_STR | |
1871 | BGP_STR | |
1872 | BGP_VPNVX_HELP_STR) | |
1873 | { | |
d62a17ae | 1874 | afi_t afi; |
1875 | int idx = 0; | |
4f280b15 | 1876 | |
d62a17ae | 1877 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) |
1878 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_normal, | |
1879 | NULL, 0, 0); | |
1880 | return CMD_SUCCESS; | |
4f280b15 LB |
1881 | } |
1882 | ||
3f227172 PG |
1883 | DEFUN (show_ip_bgp_vpn_all_tags, |
1884 | show_ip_bgp_vpn_all_tags_cmd, | |
1885 | "show [ip] bgp <vpnv4|vpnv6> all tags", | |
718e3744 | 1886 | SHOW_STR |
1887 | IP_STR | |
1888 | BGP_STR | |
3f227172 PG |
1889 | BGP_VPNVX_HELP_STR |
1890 | "Display information about all VPNv4/VPNV6 NLRIs\n" | |
718e3744 | 1891 | "Display BGP tags for prefixes\n") |
1892 | { | |
d62a17ae | 1893 | afi_t afi; |
1894 | int idx = 0; | |
3f227172 | 1895 | |
d62a17ae | 1896 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) |
1897 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_normal, | |
1898 | NULL, 1, 0); | |
1899 | return CMD_SUCCESS; | |
718e3744 | 1900 | } |
1901 | ||
3f227172 PG |
1902 | DEFUN (show_ip_bgp_vpn_rd_tags, |
1903 | show_ip_bgp_vpn_rd_tags_cmd, | |
d114b977 | 1904 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN tags", |
718e3744 | 1905 | SHOW_STR |
1906 | IP_STR | |
1907 | BGP_STR | |
3f227172 | 1908 | BGP_VPNVX_HELP_STR |
718e3744 | 1909 | "Display information for a route distinguisher\n" |
1910 | "VPN Route Distinguisher\n" | |
1911 | "Display BGP tags for prefixes\n") | |
1912 | { | |
d62a17ae | 1913 | int idx_ext_community = 5; |
1914 | int ret; | |
1915 | struct prefix_rd prd; | |
1916 | afi_t afi; | |
1917 | int idx = 0; | |
1918 | ||
1919 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1920 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
1921 | if (!ret) { | |
1922 | vty_out(vty, "%% Malformed Route Distinguisher\n"); | |
1923 | return CMD_WARNING; | |
1924 | } | |
1925 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_normal, | |
1926 | NULL, 1, 0); | |
1927 | } | |
1928 | return CMD_SUCCESS; | |
718e3744 | 1929 | } |
1930 | ||
3f227172 PG |
1931 | DEFUN (show_ip_bgp_vpn_all_neighbor_routes, |
1932 | show_ip_bgp_vpn_all_neighbor_routes_cmd, | |
1933 | "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D routes [json]", | |
718e3744 | 1934 | SHOW_STR |
1935 | IP_STR | |
1936 | BGP_STR | |
3f227172 PG |
1937 | BGP_VPNVX_HELP_STR |
1938 | "Display information about all VPNv4/VPNv6 NLRIs\n" | |
718e3744 | 1939 | "Detailed information on TCP and BGP neighbor connections\n" |
1940 | "Neighbor to display information about\n" | |
856ca177 | 1941 | "Display routes learned from neighbor\n" |
9973d184 | 1942 | JSON_STR) |
718e3744 | 1943 | { |
d62a17ae | 1944 | int idx_ipv4 = 6; |
1945 | union sockunion su; | |
1946 | struct peer *peer; | |
1947 | int ret; | |
9f049418 | 1948 | bool uj = use_json(argc, argv); |
d62a17ae | 1949 | afi_t afi; |
1950 | int idx = 0; | |
1951 | ||
1952 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
1953 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
1954 | if (ret < 0) { | |
1955 | if (uj) { | |
1956 | json_object *json_no = NULL; | |
1957 | json_no = json_object_new_object(); | |
1958 | json_object_string_add(json_no, "warning", | |
1959 | "Malformed address"); | |
1960 | vty_out(vty, "%s\n", | |
1961 | json_object_to_json_string(json_no)); | |
1962 | json_object_free(json_no); | |
1963 | } else | |
1964 | vty_out(vty, "Malformed address: %s\n", | |
1965 | argv[idx_ipv4]->arg); | |
1966 | return CMD_WARNING; | |
1967 | } | |
1968 | ||
1969 | peer = peer_lookup(NULL, &su); | |
1970 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
1971 | if (uj) { | |
1972 | json_object *json_no = NULL; | |
1973 | json_no = json_object_new_object(); | |
1974 | json_object_string_add( | |
1975 | json_no, "warning", | |
1976 | "No such neighbor or address family"); | |
1977 | vty_out(vty, "%s\n", | |
1978 | json_object_to_json_string(json_no)); | |
1979 | json_object_free(json_no); | |
1980 | } else | |
1981 | vty_out(vty, | |
1982 | "%% No such neighbor or address family\n"); | |
1983 | return CMD_WARNING; | |
1984 | } | |
1985 | ||
1986 | return bgp_show_mpls_vpn(vty, afi, NULL, bgp_show_type_neighbor, | |
1987 | &su, 0, uj); | |
1988 | } | |
1989 | return CMD_SUCCESS; | |
718e3744 | 1990 | } |
1991 | ||
3f227172 PG |
1992 | DEFUN (show_ip_bgp_vpn_rd_neighbor_routes, |
1993 | show_ip_bgp_vpn_rd_neighbor_routes_cmd, | |
d114b977 | 1994 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D routes [json]", |
718e3744 | 1995 | SHOW_STR |
1996 | IP_STR | |
1997 | BGP_STR | |
3f227172 | 1998 | BGP_VPNVX_HELP_STR |
718e3744 | 1999 | "Display information for a route distinguisher\n" |
2000 | "VPN Route Distinguisher\n" | |
2001 | "Detailed information on TCP and BGP neighbor connections\n" | |
2002 | "Neighbor to display information about\n" | |
856ca177 | 2003 | "Display routes learned from neighbor\n" |
9973d184 | 2004 | JSON_STR) |
718e3744 | 2005 | { |
d62a17ae | 2006 | int idx_ext_community = 5; |
2007 | int idx_ipv4 = 7; | |
2008 | int ret; | |
2009 | union sockunion su; | |
2010 | struct peer *peer; | |
2011 | struct prefix_rd prd; | |
9f049418 | 2012 | bool uj = use_json(argc, argv); |
d62a17ae | 2013 | afi_t afi; |
2014 | int idx = 0; | |
2015 | ||
2016 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2017 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
2018 | if (!ret) { | |
2019 | if (uj) { | |
2020 | json_object *json_no = NULL; | |
2021 | json_no = json_object_new_object(); | |
2022 | json_object_string_add( | |
2023 | json_no, "warning", | |
2024 | "Malformed Route Distinguisher"); | |
2025 | vty_out(vty, "%s\n", | |
2026 | json_object_to_json_string(json_no)); | |
2027 | json_object_free(json_no); | |
2028 | } else | |
2029 | vty_out(vty, | |
2030 | "%% Malformed Route Distinguisher\n"); | |
2031 | return CMD_WARNING; | |
2032 | } | |
2033 | ||
2034 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2035 | if (ret < 0) { | |
2036 | if (uj) { | |
2037 | json_object *json_no = NULL; | |
2038 | json_no = json_object_new_object(); | |
2039 | json_object_string_add(json_no, "warning", | |
2040 | "Malformed address"); | |
2041 | vty_out(vty, "%s\n", | |
2042 | json_object_to_json_string(json_no)); | |
2043 | json_object_free(json_no); | |
2044 | } else | |
2045 | vty_out(vty, "Malformed address: %s\n", | |
2046 | argv[idx_ext_community]->arg); | |
2047 | return CMD_WARNING; | |
2048 | } | |
2049 | ||
2050 | peer = peer_lookup(NULL, &su); | |
2051 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2052 | if (uj) { | |
2053 | json_object *json_no = NULL; | |
2054 | json_no = json_object_new_object(); | |
2055 | json_object_string_add( | |
2056 | json_no, "warning", | |
2057 | "No such neighbor or address family"); | |
2058 | vty_out(vty, "%s\n", | |
2059 | json_object_to_json_string(json_no)); | |
2060 | json_object_free(json_no); | |
2061 | } else | |
2062 | vty_out(vty, | |
2063 | "%% No such neighbor or address family\n"); | |
2064 | return CMD_WARNING; | |
2065 | } | |
2066 | ||
2067 | return bgp_show_mpls_vpn(vty, afi, &prd, bgp_show_type_neighbor, | |
2068 | &su, 0, uj); | |
2069 | } | |
2070 | return CMD_SUCCESS; | |
718e3744 | 2071 | } |
2072 | ||
3f227172 PG |
2073 | DEFUN (show_ip_bgp_vpn_all_neighbor_advertised_routes, |
2074 | show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd, | |
2075 | "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D advertised-routes [json]", | |
718e3744 | 2076 | SHOW_STR |
2077 | IP_STR | |
2078 | BGP_STR | |
3f227172 PG |
2079 | BGP_VPNVX_HELP_STR |
2080 | "Display information about all VPNv4/VPNv6 NLRIs\n" | |
718e3744 | 2081 | "Detailed information on TCP and BGP neighbor connections\n" |
2082 | "Neighbor to display information about\n" | |
856ca177 | 2083 | "Display the routes advertised to a BGP neighbor\n" |
9973d184 | 2084 | JSON_STR) |
718e3744 | 2085 | { |
d62a17ae | 2086 | int idx_ipv4 = 6; |
2087 | int ret; | |
2088 | struct peer *peer; | |
2089 | union sockunion su; | |
9f049418 | 2090 | bool uj = use_json(argc, argv); |
d62a17ae | 2091 | afi_t afi; |
2092 | int idx = 0; | |
2093 | ||
2094 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2095 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2096 | if (ret < 0) { | |
2097 | if (uj) { | |
2098 | json_object *json_no = NULL; | |
2099 | json_no = json_object_new_object(); | |
2100 | json_object_string_add(json_no, "warning", | |
2101 | "Malformed address"); | |
2102 | vty_out(vty, "%s\n", | |
2103 | json_object_to_json_string(json_no)); | |
2104 | json_object_free(json_no); | |
2105 | } else | |
2106 | vty_out(vty, "Malformed address: %s\n", | |
2107 | argv[idx_ipv4]->arg); | |
2108 | return CMD_WARNING; | |
2109 | } | |
2110 | peer = peer_lookup(NULL, &su); | |
2111 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2112 | if (uj) { | |
2113 | json_object *json_no = NULL; | |
2114 | json_no = json_object_new_object(); | |
2115 | json_object_string_add( | |
2116 | json_no, "warning", | |
2117 | "No such neighbor or address family"); | |
2118 | vty_out(vty, "%s\n", | |
2119 | json_object_to_json_string(json_no)); | |
2120 | json_object_free(json_no); | |
2121 | } else | |
2122 | vty_out(vty, | |
2123 | "%% No such neighbor or address family\n"); | |
2124 | return CMD_WARNING; | |
2125 | } | |
2126 | return show_adj_route_vpn(vty, peer, NULL, AFI_IP, | |
2127 | SAFI_MPLS_VPN, uj); | |
2128 | } | |
2129 | return CMD_SUCCESS; | |
718e3744 | 2130 | } |
2131 | ||
3f227172 PG |
2132 | DEFUN (show_ip_bgp_vpn_rd_neighbor_advertised_routes, |
2133 | show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd, | |
d114b977 | 2134 | "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D advertised-routes [json]", |
718e3744 | 2135 | SHOW_STR |
2136 | IP_STR | |
2137 | BGP_STR | |
3f227172 | 2138 | BGP_VPNVX_HELP_STR |
718e3744 | 2139 | "Display information for a route distinguisher\n" |
2140 | "VPN Route Distinguisher\n" | |
2141 | "Detailed information on TCP and BGP neighbor connections\n" | |
2142 | "Neighbor to display information about\n" | |
856ca177 | 2143 | "Display the routes advertised to a BGP neighbor\n" |
9973d184 | 2144 | JSON_STR) |
718e3744 | 2145 | { |
d62a17ae | 2146 | int idx_ext_community = 5; |
2147 | int idx_ipv4 = 7; | |
2148 | int ret; | |
2149 | struct peer *peer; | |
2150 | struct prefix_rd prd; | |
2151 | union sockunion su; | |
9f049418 | 2152 | bool uj = use_json(argc, argv); |
d62a17ae | 2153 | afi_t afi; |
2154 | int idx = 0; | |
2155 | ||
2156 | if (argv_find_and_parse_vpnvx(argv, argc, &idx, &afi)) { | |
2157 | ret = str2sockunion(argv[idx_ipv4]->arg, &su); | |
2158 | if (ret < 0) { | |
2159 | if (uj) { | |
2160 | json_object *json_no = NULL; | |
2161 | json_no = json_object_new_object(); | |
2162 | json_object_string_add(json_no, "warning", | |
2163 | "Malformed address"); | |
2164 | vty_out(vty, "%s\n", | |
2165 | json_object_to_json_string(json_no)); | |
2166 | json_object_free(json_no); | |
2167 | } else | |
2168 | vty_out(vty, "Malformed address: %s\n", | |
2169 | argv[idx_ext_community]->arg); | |
2170 | return CMD_WARNING; | |
2171 | } | |
2172 | peer = peer_lookup(NULL, &su); | |
2173 | if (!peer || !peer->afc[afi][SAFI_MPLS_VPN]) { | |
2174 | if (uj) { | |
2175 | json_object *json_no = NULL; | |
2176 | json_no = json_object_new_object(); | |
2177 | json_object_string_add( | |
2178 | json_no, "warning", | |
2179 | "No such neighbor or address family"); | |
2180 | vty_out(vty, "%s\n", | |
2181 | json_object_to_json_string(json_no)); | |
2182 | json_object_free(json_no); | |
2183 | } else | |
2184 | vty_out(vty, | |
2185 | "%% No such neighbor or address family\n"); | |
2186 | return CMD_WARNING; | |
2187 | } | |
2188 | ||
2189 | ret = str2prefix_rd(argv[idx_ext_community]->arg, &prd); | |
2190 | if (!ret) { | |
2191 | if (uj) { | |
2192 | json_object *json_no = NULL; | |
2193 | json_no = json_object_new_object(); | |
2194 | json_object_string_add( | |
2195 | json_no, "warning", | |
2196 | "Malformed Route Distinguisher"); | |
2197 | vty_out(vty, "%s\n", | |
2198 | json_object_to_json_string(json_no)); | |
2199 | json_object_free(json_no); | |
2200 | } else | |
2201 | vty_out(vty, | |
2202 | "%% Malformed Route Distinguisher\n"); | |
2203 | return CMD_WARNING; | |
2204 | } | |
2205 | ||
2206 | return show_adj_route_vpn(vty, peer, &prd, AFI_IP, | |
2207 | SAFI_MPLS_VPN, uj); | |
2208 | } | |
2209 | return CMD_SUCCESS; | |
718e3744 | 2210 | } |
d6902373 | 2211 | #endif /* KEEP_OLD_VPN_COMMANDS */ |
718e3744 | 2212 | |
d62a17ae | 2213 | void bgp_mplsvpn_init(void) |
718e3744 | 2214 | { |
d62a17ae | 2215 | install_element(BGP_VPNV4_NODE, &vpnv4_network_cmd); |
2216 | install_element(BGP_VPNV4_NODE, &vpnv4_network_route_map_cmd); | |
2217 | install_element(BGP_VPNV4_NODE, &no_vpnv4_network_cmd); | |
718e3744 | 2218 | |
d62a17ae | 2219 | install_element(BGP_VPNV6_NODE, &vpnv6_network_cmd); |
2220 | install_element(BGP_VPNV6_NODE, &no_vpnv6_network_cmd); | |
c286be96 | 2221 | |
d62a17ae | 2222 | install_element(VIEW_NODE, &show_bgp_ip_vpn_all_rd_cmd); |
af8528fa | 2223 | install_element(VIEW_NODE, &show_bgp_ip_vpn_rd_cmd); |
d6902373 | 2224 | #ifdef KEEP_OLD_VPN_COMMANDS |
af8528fa | 2225 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_cmd); |
d62a17ae | 2226 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_cmd); |
2227 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_tags_cmd); | |
2228 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_tags_cmd); | |
2229 | install_element(VIEW_NODE, &show_ip_bgp_vpn_all_neighbor_routes_cmd); | |
2230 | install_element(VIEW_NODE, &show_ip_bgp_vpn_rd_neighbor_routes_cmd); | |
2231 | install_element(VIEW_NODE, | |
2232 | &show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd); | |
2233 | install_element(VIEW_NODE, | |
2234 | &show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd); | |
d6902373 | 2235 | #endif /* KEEP_OLD_VPN_COMMANDS */ |
718e3744 | 2236 | } |
301ad80a PG |
2237 | |
2238 | vrf_id_t get_first_vrf_for_redirect_with_rt(struct ecommunity *eckey) | |
2239 | { | |
2240 | struct listnode *mnode, *mnnode; | |
2241 | struct bgp *bgp; | |
2242 | ||
2243 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
2244 | struct ecommunity *ec; | |
2245 | ||
2246 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2247 | continue; | |
2248 | ||
2249 | ec = bgp->vpn_policy[AFI_IP].import_redirect_rtlist; | |
2250 | ||
2251 | if (ecom_intersect(ec, eckey)) | |
2252 | return bgp->vrf_id; | |
2253 | } | |
2254 | return VRF_UNKNOWN; | |
2255 | } | |
3bd70bf8 PZ |
2256 | |
2257 | /* | |
2258 | * The purpose of this function is to process leaks that were deferred | |
2259 | * from earlier per-vrf configuration due to not-yet-existing default | |
2260 | * vrf, in other words, configuration such as: | |
2261 | * | |
2262 | * router bgp MMM vrf FOO | |
2263 | * address-family ipv4 unicast | |
2264 | * rd vpn export 1:1 | |
2265 | * exit-address-family | |
2266 | * | |
2267 | * router bgp NNN | |
2268 | * ... | |
2269 | * | |
2270 | * This function gets called when the default instance ("router bgp NNN") | |
2271 | * is created. | |
2272 | */ | |
2273 | void vpn_leak_postchange_all(void) | |
2274 | { | |
2275 | struct listnode *next; | |
2276 | struct bgp *bgp; | |
2277 | struct bgp *bgp_default = bgp_get_default(); | |
2278 | ||
2279 | assert(bgp_default); | |
2280 | ||
2281 | /* First, do any exporting from VRFs to the single VPN RIB */ | |
2282 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { | |
2283 | ||
2284 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2285 | continue; | |
2286 | ||
2287 | vpn_leak_postchange( | |
2288 | BGP_VPN_POLICY_DIR_TOVPN, | |
2289 | AFI_IP, | |
2290 | bgp_default, | |
2291 | bgp); | |
2292 | ||
2293 | vpn_leak_postchange( | |
2294 | BGP_VPN_POLICY_DIR_TOVPN, | |
2295 | AFI_IP6, | |
2296 | bgp_default, | |
2297 | bgp); | |
2298 | } | |
2299 | ||
2300 | /* Now, do any importing to VRFs from the single VPN RIB */ | |
2301 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { | |
2302 | ||
2303 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VRF) | |
2304 | continue; | |
2305 | ||
2306 | vpn_leak_postchange( | |
2307 | BGP_VPN_POLICY_DIR_FROMVPN, | |
2308 | AFI_IP, | |
2309 | bgp_default, | |
2310 | bgp); | |
2311 | ||
2312 | vpn_leak_postchange( | |
2313 | BGP_VPN_POLICY_DIR_FROMVPN, | |
2314 | AFI_IP6, | |
2315 | bgp_default, | |
2316 | bgp); | |
2317 | } | |
2318 | } |