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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
14454c9f | 46 | #include "bgpd/bgp_errors.h" |
128ea8ab | 47 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 50 | |
51 | /* | |
52 | * Definitions and external declarations. | |
53 | */ | |
54 | extern struct zclient *zclient; | |
55 | ||
56 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 57 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 58 | |
59 | ||
60 | /* | |
61 | * Static function declarations | |
62 | */ | |
50f74cf1 | 63 | static void delete_evpn_route_entry(struct bgp *bgp, |
64 | afi_t afi, safi_t safi, | |
65 | struct bgp_node *rn, | |
d62a17ae | 66 | struct bgp_info **ri); |
67 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); | |
14c1a7bf | 68 | |
69 | /* | |
70 | * Private functions. | |
71 | */ | |
72 | ||
50f74cf1 | 73 | /* compare two IPV4 VTEP IPs */ |
74 | static int evpn_vtep_ip_cmp(const void *p1, const void *p2) | |
75 | { | |
76 | const struct in_addr *ip1 = p1; | |
77 | const struct in_addr *ip2 = p2; | |
78 | ||
79 | if (!ip1 && !ip2) | |
80 | return 1; | |
81 | if (!ip1 || !ip2) | |
82 | return 0; | |
83 | return (ip1->s_addr == ip2->s_addr); | |
84 | } | |
85 | ||
86 | /* | |
87 | * Make hash key for ESI. | |
88 | */ | |
89 | static unsigned int esi_hash_keymake(void *p) | |
90 | { | |
91 | struct evpnes *pes = p; | |
92 | const void *pnt = (void *)pes->esi.val; | |
93 | ||
94 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
95 | } | |
96 | ||
97 | /* | |
98 | * Compare two ESIs. | |
99 | */ | |
100 | static int esi_cmp(const void *p1, const void *p2) | |
101 | { | |
102 | const struct evpnes *pes1 = p1; | |
103 | const struct evpnes *pes2 = p2; | |
104 | ||
105 | if (pes1 == NULL && pes2 == NULL) | |
106 | return 1; | |
107 | ||
108 | if (pes1 == NULL || pes2 == NULL) | |
109 | return 0; | |
110 | ||
111 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
112 | } | |
113 | ||
14c1a7bf | 114 | /* |
115 | * Make vni hash key. | |
116 | */ | |
d62a17ae | 117 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 118 | { |
d62a17ae | 119 | struct bgpevpn *vpn = p; |
120 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 121 | } |
122 | ||
123 | /* | |
124 | * Comparison function for vni hash | |
125 | */ | |
d62a17ae | 126 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 127 | { |
d62a17ae | 128 | const struct bgpevpn *vpn1 = p1; |
129 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 130 | |
d62a17ae | 131 | if (!vpn1 && !vpn2) |
132 | return 1; | |
133 | if (!vpn1 || !vpn2) | |
134 | return 0; | |
135 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 136 | } |
137 | ||
10ebe1ab MK |
138 | /* |
139 | * Make vrf import route target hash key. | |
140 | */ | |
141 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
142 | { | |
143 | struct vrf_irt_node *irt = p; | |
144 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
145 | |
146 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
147 | } |
148 | ||
149 | /* | |
150 | * Comparison function for vrf import rt hash | |
151 | */ | |
152 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
153 | { | |
154 | const struct vrf_irt_node *irt1 = p1; | |
155 | const struct vrf_irt_node *irt2 = p2; | |
156 | ||
157 | if (irt1 == NULL && irt2 == NULL) | |
158 | return 1; | |
159 | ||
160 | if (irt1 == NULL || irt2 == NULL) | |
161 | return 0; | |
162 | ||
163 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
164 | } | |
165 | ||
166 | /* | |
167 | * Create a new vrf import_rt in default instance | |
168 | */ | |
169 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
170 | { | |
171 | struct bgp *bgp_def = NULL; | |
172 | struct vrf_irt_node *irt; | |
173 | ||
174 | bgp_def = bgp_get_default(); | |
175 | if (!bgp_def) { | |
af4c2728 | 176 | flog_err(BGP_ERR_NO_DFLT, |
14454c9f | 177 | "vrf import rt new - def instance not created yet"); |
10ebe1ab MK |
178 | return NULL; |
179 | } | |
180 | ||
181 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
182 | sizeof(struct vrf_irt_node)); | |
183 | if (!irt) | |
184 | return NULL; | |
185 | ||
186 | irt->rt = *rt; | |
187 | irt->vrfs = list_new(); | |
188 | ||
189 | /* Add to hash */ | |
190 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
191 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | return irt; | |
196 | } | |
197 | ||
198 | /* | |
199 | * Free the vrf import rt node | |
200 | */ | |
201 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
202 | { | |
203 | struct bgp *bgp_def = NULL; | |
204 | ||
205 | bgp_def = bgp_get_default(); | |
206 | if (!bgp_def) { | |
af4c2728 | 207 | flog_err(BGP_ERR_NO_DFLT, |
14454c9f | 208 | "vrf import rt free - def instance not created yet"); |
10ebe1ab MK |
209 | return; |
210 | } | |
211 | ||
212 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
5d9cbca2 | 213 | list_delete_and_null(&irt->vrfs); |
10ebe1ab MK |
214 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
215 | } | |
216 | ||
217 | /* | |
218 | * Function to lookup Import RT node - used to map a RT to set of | |
219 | * VNIs importing routes with that RT. | |
220 | */ | |
221 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
222 | { | |
223 | struct bgp *bgp_def = NULL; | |
224 | struct vrf_irt_node *irt; | |
225 | struct vrf_irt_node tmp; | |
226 | ||
227 | bgp_def = bgp_get_default(); | |
228 | if (!bgp_def) { | |
af4c2728 | 229 | flog_err( |
14454c9f DS |
230 | BGP_ERR_NO_DFLT, |
231 | "vrf import rt lookup - def instance not created yet"); | |
10ebe1ab MK |
232 | return NULL; |
233 | } | |
234 | ||
235 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
236 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
237 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
238 | return irt; | |
239 | } | |
240 | ||
241 | /* | |
242 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
243 | */ | |
996c9314 | 244 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
245 | { |
246 | struct listnode *node = NULL, *nnode = NULL; | |
247 | struct bgp *tmp_bgp_vrf = NULL; | |
248 | ||
249 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
250 | if (tmp_bgp_vrf == bgp_vrf) | |
251 | return 1; | |
252 | } | |
253 | return 0; | |
254 | } | |
255 | ||
14c1a7bf | 256 | /* |
257 | * Make import route target hash key. | |
258 | */ | |
d62a17ae | 259 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 260 | { |
d62a17ae | 261 | struct irt_node *irt = p; |
262 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
263 | |
264 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 265 | } |
266 | ||
267 | /* | |
268 | * Comparison function for import rt hash | |
269 | */ | |
d62a17ae | 270 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 271 | { |
d62a17ae | 272 | const struct irt_node *irt1 = p1; |
273 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 274 | |
d62a17ae | 275 | if (irt1 == NULL && irt2 == NULL) |
276 | return 1; | |
14c1a7bf | 277 | |
d62a17ae | 278 | if (irt1 == NULL || irt2 == NULL) |
279 | return 0; | |
14c1a7bf | 280 | |
d62a17ae | 281 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 282 | } |
283 | ||
7724c0a1 | 284 | /* |
128ea8ab | 285 | * Create a new import_rt |
286 | */ | |
d62a17ae | 287 | static struct irt_node *import_rt_new(struct bgp *bgp, |
288 | struct ecommunity_val *rt) | |
128ea8ab | 289 | { |
d62a17ae | 290 | struct irt_node *irt; |
128ea8ab | 291 | |
d62a17ae | 292 | if (!bgp) |
293 | return NULL; | |
128ea8ab | 294 | |
d62a17ae | 295 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
296 | if (!irt) | |
297 | return NULL; | |
128ea8ab | 298 | |
d62a17ae | 299 | irt->rt = *rt; |
300 | irt->vnis = list_new(); | |
128ea8ab | 301 | |
d62a17ae | 302 | /* Add to hash */ |
303 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
304 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
305 | return NULL; | |
306 | } | |
128ea8ab | 307 | |
d62a17ae | 308 | return irt; |
128ea8ab | 309 | } |
310 | ||
311 | /* | |
312 | * Free the import rt node | |
7724c0a1 | 313 | */ |
d62a17ae | 314 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 315 | { |
d62a17ae | 316 | hash_release(bgp->import_rt_hash, irt); |
b1ab0dfe | 317 | list_delete_and_null(&irt->vnis); |
d62a17ae | 318 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 319 | } |
320 | ||
14c1a7bf | 321 | /* |
128ea8ab | 322 | * Function to lookup Import RT node - used to map a RT to set of |
323 | * VNIs importing routes with that RT. | |
324 | */ | |
d62a17ae | 325 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
326 | struct ecommunity_val *rt) | |
128ea8ab | 327 | { |
d62a17ae | 328 | struct irt_node *irt; |
329 | struct irt_node tmp; | |
128ea8ab | 330 | |
d62a17ae | 331 | memset(&tmp, 0, sizeof(struct irt_node)); |
332 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
333 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
334 | return irt; | |
128ea8ab | 335 | } |
336 | ||
337 | /* | |
338 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
339 | */ | |
d62a17ae | 340 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 341 | { |
d62a17ae | 342 | struct listnode *node, *nnode; |
343 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 344 | |
d62a17ae | 345 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
346 | if (tmp_vpn == vpn) | |
347 | return 1; | |
348 | } | |
128ea8ab | 349 | |
d62a17ae | 350 | return 0; |
128ea8ab | 351 | } |
352 | ||
353 | /* | |
354 | * Compare Route Targets. | |
355 | */ | |
d62a17ae | 356 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
357 | struct ecommunity *ecom2) | |
128ea8ab | 358 | { |
d62a17ae | 359 | if (ecom1 && !ecom2) |
360 | return -1; | |
128ea8ab | 361 | |
d62a17ae | 362 | if (!ecom1 && ecom2) |
363 | return 1; | |
128ea8ab | 364 | |
d62a17ae | 365 | if (!ecom1 && !ecom2) |
366 | return 0; | |
128ea8ab | 367 | |
d62a17ae | 368 | if (ecom1->str && !ecom2->str) |
369 | return -1; | |
128ea8ab | 370 | |
d62a17ae | 371 | if (!ecom1->str && ecom2->str) |
372 | return 1; | |
128ea8ab | 373 | |
d62a17ae | 374 | if (!ecom1->str && !ecom2->str) |
375 | return 0; | |
128ea8ab | 376 | |
d62a17ae | 377 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 378 | } |
379 | ||
987d8198 DS |
380 | static void evpn_xxport_delete_ecomm(void *val) |
381 | { | |
382 | struct ecommunity *ecomm = val; | |
383 | ecommunity_free(&ecomm); | |
384 | } | |
385 | ||
128ea8ab | 386 | /* |
387 | * Mask off global-admin field of specified extended community (RT), | |
388 | * just retain the local-admin field. | |
389 | */ | |
d62a17ae | 390 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
391 | struct ecommunity_val *src) | |
128ea8ab | 392 | { |
d7c0a89a | 393 | uint8_t type; |
128ea8ab | 394 | |
d62a17ae | 395 | type = src->val[0]; |
396 | dst->val[0] = 0; | |
397 | if (type == ECOMMUNITY_ENCODE_AS) { | |
398 | dst->val[2] = dst->val[3] = 0; | |
399 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
400 | || type == ECOMMUNITY_ENCODE_IP) { | |
401 | dst->val[2] = dst->val[3] = 0; | |
402 | dst->val[4] = dst->val[5] = 0; | |
403 | } | |
128ea8ab | 404 | } |
405 | ||
10ebe1ab MK |
406 | /* |
407 | * Map one RT to specified VRF. | |
408 | * bgp_vrf = BGP vrf instance | |
409 | */ | |
996c9314 | 410 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
411 | { |
412 | struct vrf_irt_node *irt = NULL; | |
413 | struct ecommunity_val eval_tmp; | |
414 | ||
415 | /* If using "automatic" RT, | |
416 | * we only care about the local-admin sub-field. | |
417 | * This is to facilitate using L3VNI(VRF-VNI) | |
418 | * as the RT for EBGP peering too. | |
419 | */ | |
420 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 421 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
422 | mask_ecom_global_admin(&eval_tmp, eval); |
423 | ||
424 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
425 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
426 | /* Already mapped. */ | |
427 | return; | |
10ebe1ab | 428 | |
e066d6d0 | 429 | if (!irt) |
10ebe1ab | 430 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
431 | |
432 | /* Add VRF to the list for this RT. */ | |
433 | listnode_add(irt->vrfs, bgp_vrf); | |
434 | } | |
435 | ||
436 | /* | |
437 | * Unmap specified VRF from specified RT. If there are no other | |
438 | * VRFs for this RT, then the RT hash is deleted. | |
439 | * bgp_vrf: BGP VRF specific instance | |
440 | */ | |
996c9314 | 441 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
442 | { |
443 | /* Delete VRF from list for this RT. */ | |
444 | listnode_delete(irt->vrfs, bgp_vrf); | |
445 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
446 | vrf_import_rt_free(irt); |
447 | } | |
448 | } | |
449 | ||
128ea8ab | 450 | /* |
451 | * Map one RT to specified VNI. | |
14c1a7bf | 452 | */ |
d62a17ae | 453 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
454 | struct ecommunity_val *eval) | |
128ea8ab | 455 | { |
d62a17ae | 456 | struct irt_node *irt; |
457 | struct ecommunity_val eval_tmp; | |
128ea8ab | 458 | |
d62a17ae | 459 | /* If using "automatic" RT, we only care about the local-admin |
460 | * sub-field. | |
461 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
462 | */ | |
463 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
464 | if (!is_import_rt_configured(vpn)) | |
465 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 466 | |
d62a17ae | 467 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 468 | if (irt) |
d62a17ae | 469 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
470 | /* Already mapped. */ | |
471 | return; | |
128ea8ab | 472 | |
d62a17ae | 473 | if (!irt) { |
474 | irt = import_rt_new(bgp, &eval_tmp); | |
475 | assert(irt); | |
476 | } | |
128ea8ab | 477 | |
d62a17ae | 478 | /* Add VNI to the hash list for this RT. */ |
479 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 480 | } |
481 | ||
482 | /* | |
483 | * Unmap specified VNI from specified RT. If there are no other | |
484 | * VNIs for this RT, then the RT hash is deleted. | |
485 | */ | |
d62a17ae | 486 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
487 | struct irt_node *irt) | |
14c1a7bf | 488 | { |
d62a17ae | 489 | /* Delete VNI from hash list for this RT. */ |
490 | listnode_delete(irt->vnis, vpn); | |
491 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 492 | import_rt_free(bgp, irt); |
493 | } | |
14c1a7bf | 494 | } |
495 | ||
128ea8ab | 496 | /* |
497 | * Create RT extended community automatically from passed information: | |
498 | * of the form AS:VNI. | |
499 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
500 | * the need is to get a RT value that will be unique across different | |
501 | * VNIs but the same across routers (in the same AS) for a particular | |
502 | * VNI. | |
503 | */ | |
c581d8b0 | 504 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 505 | { |
d62a17ae | 506 | struct ecommunity_val eval; |
507 | struct ecommunity *ecomadd; | |
128ea8ab | 508 | |
bf1061d8 VB |
509 | if (bgp->advertise_autort_rfc8365) |
510 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 511 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 512 | |
d62a17ae | 513 | ecomadd = ecommunity_new(); |
514 | ecommunity_add_val(ecomadd, &eval); | |
515 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 516 | } |
14c1a7bf | 517 | |
518 | /* | |
128ea8ab | 519 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
520 | * creation of a VNI. | |
521 | */ | |
d62a17ae | 522 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 523 | { |
d62a17ae | 524 | bgp_evpn_derive_auto_rd(bgp, vpn); |
525 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
526 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 527 | } |
528 | ||
1ec31309 | 529 | /* |
530 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
531 | */ | |
532 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
533 | { | |
534 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
535 | return; | |
536 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
537 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
538 | } | |
539 | ||
128ea8ab | 540 | /* |
541 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 542 | */ |
d62a17ae | 543 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
544 | struct prefix_evpn *p, | |
545 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 546 | uint8_t flags, uint32_t seq) |
d62a17ae | 547 | { |
548 | struct stream *s; | |
549 | int ipa_len; | |
550 | char buf1[ETHER_ADDR_STRLEN]; | |
551 | char buf2[INET6_ADDRSTRLEN]; | |
552 | char buf3[INET6_ADDRSTRLEN]; | |
553 | ||
554 | /* Check socket. */ | |
555 | if (!zclient || zclient->sock < 0) | |
556 | return 0; | |
557 | ||
558 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
559 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
560 | return 0; | |
561 | ||
562 | s = zclient->obuf; | |
563 | stream_reset(s); | |
564 | ||
996c9314 LB |
565 | zclient_create_header( |
566 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
567 | bgp->vrf_id); | |
d62a17ae | 568 | stream_putl(s, vpn->vni); |
3714a385 | 569 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 570 | /* IP address length and IP address, if any. */ |
3714a385 | 571 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 572 | stream_putl(s, 0); |
573 | else { | |
3714a385 | 574 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 575 | : IPV6_MAX_BYTELEN; |
576 | stream_putl(s, ipa_len); | |
3714a385 | 577 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 578 | } |
579 | stream_put_in_addr(s, &remote_vtep_ip); | |
580 | ||
ead40654 | 581 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 582 | /* Also TX the sequence number of the best route. */ |
583 | if (add) { | |
ead40654 | 584 | stream_putc(s, flags); |
f07e1c99 | 585 | stream_putl(s, seq); |
586 | } | |
d62a17ae | 587 | |
588 | stream_putw_at(s, 0, stream_get_endp(s)); | |
589 | ||
590 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 591 | zlog_debug( |
f07e1c99 | 592 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 593 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 594 | prefix_mac2str(&p->prefix.macip_addr.mac, |
595 | buf1, sizeof(buf1)), | |
596 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 597 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
598 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
599 | sizeof(buf2))); | |
d62a17ae | 600 | |
601 | return zclient_send_message(zclient); | |
7ef5a232 | 602 | } |
b18825eb | 603 | |
128ea8ab | 604 | /* |
605 | * Add (update) or delete remote VTEP from zebra. | |
606 | */ | |
d62a17ae | 607 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
608 | struct prefix_evpn *p, int add) | |
128ea8ab | 609 | { |
d62a17ae | 610 | struct stream *s; |
128ea8ab | 611 | |
d62a17ae | 612 | /* Check socket. */ |
613 | if (!zclient || zclient->sock < 0) | |
614 | return 0; | |
128ea8ab | 615 | |
d62a17ae | 616 | /* Don't try to register if Zebra doesn't know of this instance. */ |
617 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
618 | return 0; | |
128ea8ab | 619 | |
d62a17ae | 620 | s = zclient->obuf; |
621 | stream_reset(s); | |
128ea8ab | 622 | |
996c9314 LB |
623 | zclient_create_header( |
624 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
625 | bgp->vrf_id); | |
d62a17ae | 626 | stream_putl(s, vpn->vni); |
3714a385 | 627 | if (is_evpn_prefix_ipaddr_v4(p)) |
628 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
629 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 630 | flog_err( |
14454c9f | 631 | BGP_ERR_VTEP_INVALID, |
d62a17ae | 632 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
633 | add ? "ADD" : "DEL", vpn->vni); | |
634 | return -1; | |
635 | } | |
128ea8ab | 636 | |
d62a17ae | 637 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 638 | |
d62a17ae | 639 | if (bgp_debug_zebra(NULL)) |
640 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
641 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 642 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 643 | |
d62a17ae | 644 | return zclient_send_message(zclient); |
128ea8ab | 645 | } |
646 | ||
50f74cf1 | 647 | /* |
648 | * Build extended community for EVPN ES (type-4) route | |
649 | */ | |
650 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
651 | struct attr *attr) | |
652 | { | |
653 | struct ecommunity ecom_encap; | |
654 | struct ecommunity ecom_es_rt; | |
655 | struct ecommunity_val eval; | |
656 | struct ecommunity_val eval_es_rt; | |
657 | bgp_encap_types tnl_type; | |
658 | struct ethaddr mac; | |
659 | ||
660 | /* Encap */ | |
661 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
662 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
663 | encode_encap_extcomm(tnl_type, &eval); | |
664 | ecom_encap.size = 1; | |
665 | ecom_encap.val = (uint8_t *)eval.val; | |
666 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
667 | ||
668 | /* ES import RT */ | |
669 | memset(&mac, 0, sizeof(struct ethaddr)); | |
670 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
671 | es_get_system_mac(&es->esi, &mac); | |
672 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
673 | ecom_es_rt.size = 1; | |
674 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
675 | attr->ecommunity = | |
676 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
677 | ||
678 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
679 | } | |
680 | ||
342dd0c6 | 681 | /* |
682 | * Build extended communities for EVPN prefix route. | |
683 | */ | |
684 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
685 | struct attr *attr) | |
686 | { | |
687 | struct ecommunity ecom_encap; | |
688 | struct ecommunity ecom_rmac; | |
689 | struct ecommunity_val eval; | |
690 | struct ecommunity_val eval_rmac; | |
691 | bgp_encap_types tnl_type; | |
692 | struct listnode *node, *nnode; | |
693 | struct ecommunity *ecom; | |
694 | struct list *vrf_export_rtl = NULL; | |
695 | ||
696 | /* Encap */ | |
697 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
698 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
699 | encode_encap_extcomm(tnl_type, &eval); | |
700 | ecom_encap.size = 1; | |
d7c0a89a | 701 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 702 | |
703 | /* Add Encap */ | |
704 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
705 | ||
706 | /* Add the export RTs for L3VNI/VRF */ | |
707 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
708 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
709 | attr->ecommunity = | |
710 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 711 | |
712 | /* add the router mac extended community */ | |
713 | if (!is_zero_mac(&attr->rmac)) { | |
714 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
715 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
716 | ecom_rmac.size = 1; | |
717 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
718 | attr->ecommunity = |
719 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 720 | } |
721 | ||
722 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
723 | } | |
724 | ||
128ea8ab | 725 | /* |
1ec31309 | 726 | * Build extended communities for EVPN route. |
727 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
728 | * and ENCAP extended communities are applicable for all routes. | |
729 | * The default gateway extended community and MAC mobility (sticky) extended | |
730 | * community are added as needed based on passed settings - only for type-2 | |
731 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
732 | * added, if present, based on passed settings - only for non-link-local | |
733 | * type-2 routes. | |
128ea8ab | 734 | */ |
7ec156a9 | 735 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 736 | int add_l3_ecomm) |
128ea8ab | 737 | { |
d62a17ae | 738 | struct ecommunity ecom_encap; |
739 | struct ecommunity ecom_sticky; | |
ead40654 | 740 | struct ecommunity ecom_default_gw; |
bc59a672 | 741 | struct ecommunity ecom_rmac; |
68e33151 | 742 | struct ecommunity ecom_na; |
d62a17ae | 743 | struct ecommunity_val eval; |
744 | struct ecommunity_val eval_sticky; | |
ead40654 | 745 | struct ecommunity_val eval_default_gw; |
bc59a672 | 746 | struct ecommunity_val eval_rmac; |
68e33151 CS |
747 | struct ecommunity_val eval_na; |
748 | ||
d62a17ae | 749 | bgp_encap_types tnl_type; |
750 | struct listnode *node, *nnode; | |
751 | struct ecommunity *ecom; | |
d7c0a89a | 752 | uint32_t seqnum; |
7a3e76f1 | 753 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 754 | |
d62a17ae | 755 | /* Encap */ |
756 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
757 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
758 | encode_encap_extcomm(tnl_type, &eval); | |
759 | ecom_encap.size = 1; | |
d7c0a89a | 760 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 761 | |
d62a17ae | 762 | /* Add Encap */ |
763 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 764 | |
7a3e76f1 | 765 | /* Add the export RTs for L2VNI */ |
d62a17ae | 766 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
767 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 768 | |
1ec31309 | 769 | /* Add the export RTs for L3VNI if told to - caller determines |
770 | * when this should be done. | |
523cafc4 | 771 | */ |
1ec31309 | 772 | if (add_l3_ecomm) { |
7ec156a9 MK |
773 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
774 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
775 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
776 | ecom)) | |
996c9314 LB |
777 | attr->ecommunity = ecommunity_merge( |
778 | attr->ecommunity, ecom); | |
7ec156a9 | 779 | } |
f1f8b53c | 780 | } |
7a3e76f1 | 781 | |
1ec31309 | 782 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 783 | if (attr->sticky) { |
784 | seqnum = 0; | |
785 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
786 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
787 | ecom_sticky.size = 1; | |
d7c0a89a | 788 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 789 | attr->ecommunity = |
790 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
791 | } | |
c85c03c7 | 792 | |
1ec31309 | 793 | /* Add RMAC, if told to. */ |
794 | if (add_l3_ecomm) { | |
bc59a672 MK |
795 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
796 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
797 | ecom_rmac.size = 1; | |
798 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
799 | attr->ecommunity = |
800 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
801 | } |
802 | ||
1ec31309 | 803 | /* Add default gateway, if needed. */ |
ead40654 MK |
804 | if (attr->default_gw) { |
805 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
806 | encode_default_gw_extcomm(&eval_default_gw); | |
807 | ecom_default_gw.size = 1; | |
808 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
809 | attr->ecommunity = |
810 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
811 | } |
812 | ||
68e33151 CS |
813 | if (attr->router_flag) { |
814 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
815 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
816 | ecom_na.size = 1; | |
817 | ecom_na.val = (uint8_t *)eval_na.val; | |
818 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
819 | &ecom_na); | |
820 | } | |
821 | ||
d62a17ae | 822 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 823 | } |
824 | ||
825 | /* | |
826 | * Add MAC mobility extended community to attribute. | |
827 | */ | |
d7c0a89a | 828 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 829 | { |
830 | struct ecommunity ecom_tmp; | |
831 | struct ecommunity_val eval; | |
d7c0a89a | 832 | uint8_t *ecom_val_ptr; |
d62a17ae | 833 | int i; |
d7c0a89a | 834 | uint8_t *pnt; |
d62a17ae | 835 | int type = 0; |
836 | int sub_type = 0; | |
837 | ||
838 | /* Build MM */ | |
839 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
840 | ||
841 | /* Find current MM ecommunity */ | |
421bb26a | 842 | ecom_val_ptr = NULL; |
d62a17ae | 843 | |
844 | if (attr->ecommunity) { | |
845 | for (i = 0; i < attr->ecommunity->size; i++) { | |
846 | pnt = attr->ecommunity->val + (i * 8); | |
847 | type = *pnt++; | |
848 | sub_type = *pnt++; | |
849 | ||
850 | if (type == ECOMMUNITY_ENCODE_EVPN | |
851 | && sub_type | |
852 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
853 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
854 | + (i * 8)); | |
d62a17ae | 855 | break; |
856 | } | |
857 | } | |
858 | } | |
859 | ||
860 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
861 | if (ecom_val_ptr) { |
862 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 863 | } |
864 | /* Add MM to existing */ | |
865 | else { | |
866 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
867 | ecom_tmp.size = 1; | |
d7c0a89a | 868 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 869 | |
f9a78910 DS |
870 | if (attr->ecommunity) |
871 | attr->ecommunity = | |
872 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
873 | else | |
874 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 875 | } |
128ea8ab | 876 | } |
877 | ||
878 | /* Install EVPN route into zebra. */ | |
d62a17ae | 879 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
880 | struct prefix_evpn *p, | |
f07e1c99 | 881 | struct in_addr remote_vtep_ip, uint8_t flags, |
882 | uint32_t seq) | |
128ea8ab | 883 | { |
d62a17ae | 884 | int ret; |
128ea8ab | 885 | |
d62a17ae | 886 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
887 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 888 | 1, flags, seq); |
d62a17ae | 889 | else |
890 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 891 | |
d62a17ae | 892 | return ret; |
128ea8ab | 893 | } |
894 | ||
895 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 896 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
897 | struct prefix_evpn *p, | |
898 | struct in_addr remote_vtep_ip) | |
128ea8ab | 899 | { |
d62a17ae | 900 | int ret; |
128ea8ab | 901 | |
d62a17ae | 902 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
903 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 904 | 0, 0, 0); |
d62a17ae | 905 | else |
906 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 907 | |
d62a17ae | 908 | return ret; |
128ea8ab | 909 | } |
910 | ||
911 | /* | |
912 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
913 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
914 | * from peers. | |
915 | */ | |
d62a17ae | 916 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
917 | struct bgp_node *rn, | |
918 | struct bgp_info *old_local) | |
128ea8ab | 919 | { |
d62a17ae | 920 | struct bgp_node *global_rn; |
921 | struct bgp_info *ri; | |
922 | afi_t afi = AFI_L2VPN; | |
923 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 924 | |
d62a17ae | 925 | /* Locate route node in the global EVPN routing table. Note that |
926 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
927 | * L3VPN routes. | |
928 | */ | |
929 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
930 | (struct prefix *)&rn->p, &vpn->prd); | |
931 | if (global_rn) { | |
932 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 933 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
128ea8ab | 934 | |
d62a17ae | 935 | /* Schedule for processing - withdraws to peers happen from |
936 | * this table. | |
937 | */ | |
938 | if (ri) | |
939 | bgp_process(bgp, global_rn, afi, safi); | |
940 | bgp_unlock_node(global_rn); | |
941 | } | |
128ea8ab | 942 | |
d62a17ae | 943 | /* Delete route entry in the VNI route table, caller to remove. */ |
944 | bgp_info_delete(rn, old_local); | |
128ea8ab | 945 | } |
946 | ||
50f74cf1 | 947 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
948 | { | |
949 | struct in_addr *ip; | |
950 | ||
951 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
952 | if (!ip) | |
953 | return NULL; | |
954 | ||
955 | ip->s_addr = vtep.s_addr; | |
956 | return ip; | |
957 | } | |
958 | ||
959 | static void es_vtep_free(struct in_addr *ip) | |
960 | { | |
961 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
962 | } | |
963 | ||
964 | /* check if VTEP is already part of the list */ | |
965 | static int is_vtep_present_in_list(struct list *list, | |
966 | struct in_addr vtep) | |
967 | { | |
968 | struct listnode *node = NULL; | |
969 | struct in_addr *tmp; | |
970 | ||
971 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
972 | if (tmp->s_addr == vtep.s_addr) | |
973 | return 1; | |
974 | } | |
975 | return 0; | |
976 | } | |
977 | ||
2bb9eff4 DS |
978 | /* |
979 | * Best path for ES route was changed, | |
980 | * update the list of VTEPs for this ES | |
981 | */ | |
50f74cf1 | 982 | static int evpn_es_install_vtep(struct bgp *bgp, |
983 | struct evpnes *es, | |
984 | struct prefix_evpn *p, | |
985 | struct in_addr rvtep) | |
986 | { | |
987 | struct in_addr *vtep_ip; | |
988 | ||
989 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
990 | return 0; | |
991 | ||
992 | ||
993 | vtep_ip = es_vtep_new(rvtep); | |
994 | if (vtep_ip) | |
995 | listnode_add_sort(es->vtep_list, vtep_ip); | |
996 | return 0; | |
997 | } | |
998 | ||
2bb9eff4 DS |
999 | /* |
1000 | * Best path for ES route was changed, | |
1001 | * update the list of VTEPs for this ES | |
1002 | */ | |
50f74cf1 | 1003 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1004 | struct evpnes *es, | |
1005 | struct prefix_evpn *p, | |
1006 | struct in_addr rvtep) | |
1007 | { | |
1008 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1009 | struct in_addr *tmp; | |
1010 | ||
1011 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1012 | if (tmp->s_addr == rvtep.s_addr) { | |
1013 | es_vtep_free(tmp); | |
1014 | node_to_del = node; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | if (node_to_del) | |
1019 | list_delete_node(es->vtep_list, node_to_del); | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * Calculate the best path for a ES(type-4) route. | |
1026 | */ | |
1027 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1028 | struct evpnes *es, | |
1029 | struct bgp_node *rn) | |
1030 | { | |
1031 | int ret = 0; | |
1032 | afi_t afi = AFI_L2VPN; | |
1033 | safi_t safi = SAFI_EVPN; | |
1034 | struct bgp_info *old_select; /* old best */ | |
1035 | struct bgp_info *new_select; /* new best */ | |
1036 | struct bgp_info_pair old_and_new; | |
1037 | ||
1038 | /* Compute the best path. */ | |
1039 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1040 | &old_and_new, afi, safi); | |
1041 | old_select = old_and_new.old; | |
1042 | new_select = old_and_new.new; | |
1043 | ||
2bb9eff4 DS |
1044 | /* |
1045 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1046 | * updated |
1047 | */ | |
1048 | if (old_select && old_select == new_select | |
1049 | && old_select->type == ZEBRA_ROUTE_BGP | |
1050 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1051 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1052 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1053 | && !bgp->addpath_tx_used[afi][safi]) { | |
1054 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1055 | ret = evpn_es_install_vtep(bgp, es, | |
1056 | (struct prefix_evpn *)&rn->p, | |
1057 | old_select->attr->nexthop); | |
1058 | } | |
1059 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1060 | bgp_zebra_clear_route_change_flags(rn); | |
1061 | return ret; | |
1062 | } | |
1063 | ||
1064 | /* If the user did a "clear" this flag will be set */ | |
1065 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1066 | ||
2bb9eff4 DS |
1067 | /* |
1068 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1069 | * into the zebra RIB. |
1070 | */ | |
1071 | if (old_select || new_select) | |
1072 | bgp_bump_version(rn); | |
1073 | ||
1074 | if (old_select) | |
1075 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1076 | if (new_select) { | |
1077 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1078 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1079 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1080 | } | |
1081 | ||
1082 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1083 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1084 | ret = evpn_es_install_vtep(bgp, es, | |
1085 | (struct prefix_evpn *)&rn->p, | |
1086 | new_select->attr->nexthop); | |
1087 | } else { | |
1088 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1089 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1090 | ret = evpn_es_uninstall_vtep( |
1091 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1092 | old_select->attr->nexthop); | |
50f74cf1 | 1093 | } |
1094 | ||
1095 | /* Clear any route change flags. */ | |
1096 | bgp_zebra_clear_route_change_flags(rn); | |
1097 | ||
1098 | /* Reap old select bgp_info, if it has been removed */ | |
1099 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1100 | bgp_info_reap(rn, old_select); | |
1101 | ||
1102 | return ret; | |
1103 | } | |
1104 | ||
128ea8ab | 1105 | /* |
1106 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1107 | * if appropriate. | |
1108 | */ | |
d62a17ae | 1109 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1110 | struct bgp_node *rn) | |
1111 | { | |
1112 | struct bgp_info *old_select, *new_select; | |
1113 | struct bgp_info_pair old_and_new; | |
68e33151 | 1114 | struct prefix_evpn *evp; |
d62a17ae | 1115 | afi_t afi = AFI_L2VPN; |
1116 | safi_t safi = SAFI_EVPN; | |
1117 | int ret = 0; | |
d7c0a89a | 1118 | uint8_t flags = 0; |
d62a17ae | 1119 | |
1120 | /* Compute the best path. */ | |
1121 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1122 | afi, safi); | |
1123 | old_select = old_and_new.old; | |
1124 | new_select = old_and_new.new; | |
1125 | ||
68e33151 | 1126 | evp = (struct prefix_evpn *)&rn->p; |
d62a17ae | 1127 | /* If the best path hasn't changed - see if there is still something to |
1128 | * update | |
1129 | * to zebra RIB. | |
1130 | */ | |
1131 | if (old_select && old_select == new_select | |
1132 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1133 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1134 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1135 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1136 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
1137 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1138 | if (old_select->attr->sticky) | |
1139 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1140 | if (old_select->attr->default_gw) | |
1141 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1142 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1143 | old_select->attr->router_flag) | |
1144 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1145 | ||
996c9314 LB |
1146 | ret = evpn_zebra_install( |
1147 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
f07e1c99 | 1148 | old_select->attr->nexthop, flags, |
1149 | mac_mobility_seqnum(old_select->attr)); | |
ead40654 | 1150 | } |
d62a17ae | 1151 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
1152 | bgp_zebra_clear_route_change_flags(rn); | |
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | /* If the user did a "clear" this flag will be set */ | |
1157 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1158 | ||
1159 | /* bestpath has changed; update relevant fields and install or uninstall | |
1160 | * into the zebra RIB. | |
1161 | */ | |
1162 | if (old_select || new_select) | |
1163 | bgp_bump_version(rn); | |
1164 | ||
1165 | if (old_select) | |
1166 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1167 | if (new_select) { | |
1168 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1169 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1170 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1171 | } | |
1172 | ||
1173 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1174 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1175 | flags = 0; |
1176 | if (new_select->attr->sticky) | |
1177 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1178 | if (new_select->attr->default_gw) | |
1179 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1180 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1181 | new_select->attr->router_flag) | |
1182 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1183 | ||
d62a17ae | 1184 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
f07e1c99 | 1185 | new_select->attr->nexthop, flags, |
1186 | mac_mobility_seqnum(new_select->attr)); | |
d62a17ae | 1187 | /* If an old best existed and it was a "local" route, the only |
1188 | * reason | |
1189 | * it would be supplanted is due to MAC mobility procedures. So, | |
1190 | * we | |
1191 | * need to do an implicit delete and withdraw that route from | |
1192 | * peers. | |
1193 | */ | |
1194 | if (old_select && old_select->peer == bgp->peer_self | |
1195 | && old_select->type == ZEBRA_ROUTE_BGP | |
1196 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1197 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1198 | } else { | |
1199 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1200 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1201 | ret = evpn_zebra_uninstall(bgp, vpn, |
1202 | (struct prefix_evpn *)&rn->p, | |
1203 | old_select->attr->nexthop); | |
1204 | } | |
1205 | ||
1206 | /* Clear any route change flags. */ | |
1207 | bgp_zebra_clear_route_change_flags(rn); | |
1208 | ||
1209 | /* Reap old select bgp_info, if it has been removed */ | |
1210 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1211 | bgp_info_reap(rn, old_select); | |
1212 | ||
1213 | return ret; | |
128ea8ab | 1214 | } |
1215 | ||
ead40654 MK |
1216 | /* |
1217 | * Return true if the local ri for this rn is of type gateway mac | |
1218 | */ | |
1219 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1220 | { | |
996c9314 LB |
1221 | struct bgp_info *tmp_ri = NULL; |
1222 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
1223 | |
1224 | local_ri = NULL; | |
1225 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1226 | if (tmp_ri->peer == bgp->peer_self | |
1227 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1228 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1229 | local_ri = tmp_ri; | |
1230 | } | |
1231 | ||
1232 | if (!local_ri) | |
1233 | return 0; | |
1234 | ||
1235 | return local_ri->attr->default_gw; | |
1236 | } | |
1237 | ||
c85c03c7 | 1238 | |
1239 | /* | |
1240 | * Return true if the local ri for this rn has sticky set | |
1241 | */ | |
d62a17ae | 1242 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1243 | { |
d62a17ae | 1244 | struct bgp_info *tmp_ri; |
1245 | struct bgp_info *local_ri; | |
c85c03c7 | 1246 | |
d62a17ae | 1247 | local_ri = NULL; |
1248 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1249 | if (tmp_ri->peer == bgp->peer_self | |
1250 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1251 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1252 | local_ri = tmp_ri; | |
1253 | } | |
c85c03c7 | 1254 | |
d62a17ae | 1255 | if (!local_ri) |
1256 | return 0; | |
c85c03c7 | 1257 | |
d62a17ae | 1258 | return local_ri->attr->sticky; |
c85c03c7 | 1259 | } |
1260 | ||
50f74cf1 | 1261 | /* |
1262 | * create or update EVPN type4 route entry. | |
1263 | * This could be in the ES table or the global table. | |
1264 | * TODO: handle remote ES (type4) routes as well | |
1265 | */ | |
1266 | static int update_evpn_type4_route_entry(struct bgp *bgp, | |
1267 | struct evpnes *es, | |
1268 | afi_t afi, safi_t safi, | |
1269 | struct bgp_node *rn, | |
1270 | struct attr *attr, | |
1271 | int add, | |
1272 | struct bgp_info **ri, | |
1273 | int *route_changed) | |
1274 | { | |
1275 | char buf[ESI_STR_LEN]; | |
1276 | char buf1[INET6_ADDRSTRLEN]; | |
1277 | struct bgp_info *tmp_ri = NULL; | |
1278 | struct bgp_info *local_ri = NULL; /* local route entry if any */ | |
1279 | struct bgp_info *remote_ri = NULL; /* remote route entry if any */ | |
1280 | struct attr *attr_new = NULL; | |
1281 | struct prefix_evpn *evp = NULL; | |
1282 | ||
1283 | *ri = NULL; | |
1284 | *route_changed = 1; | |
1285 | evp = (struct prefix_evpn *)&rn->p; | |
1286 | ||
1287 | /* locate the local and remote entries if any */ | |
1288 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1289 | if (tmp_ri->peer == bgp->peer_self && | |
1290 | tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1291 | tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1292 | local_ri = tmp_ri; | |
1293 | if (tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1294 | tmp_ri->sub_type == BGP_ROUTE_IMPORTED && | |
1295 | CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) | |
1296 | remote_ri = tmp_ri; | |
1297 | } | |
1298 | ||
1299 | /* we don't expect to see a remote_ri at this point. | |
1300 | * An ES route has esi + vtep_ip as the key, | |
1301 | * We shouldn't see the same route from any other vtep. | |
1302 | */ | |
1303 | if (remote_ri) { | |
af4c2728 | 1304 | flog_err( |
14454c9f DS |
1305 | BGP_ERR_ES_INVALID, |
1306 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", | |
1307 | bgp->vrf_id, | |
1308 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1309 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1310 | return -1; |
1311 | } | |
1312 | ||
1313 | if (!local_ri && !add) | |
1314 | return 0; | |
1315 | ||
1316 | /* create or update the entry */ | |
1317 | if (!local_ri) { | |
1318 | ||
1319 | /* Add or update attribute to hash */ | |
1320 | attr_new = bgp_attr_intern(attr); | |
1321 | ||
1322 | /* Create new route with its attribute. */ | |
1323 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, | |
1324 | 0, bgp->peer_self, attr_new, rn); | |
1325 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1326 | ||
1327 | /* add the newly created path to the route-node */ | |
1328 | bgp_info_add(rn, tmp_ri); | |
1329 | } else { | |
1330 | tmp_ri = local_ri; | |
1331 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1332 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1333 | *route_changed = 0; | |
1334 | else { | |
1335 | /* The attribute has changed. | |
1336 | * Add (or update) attribute to hash. */ | |
1337 | attr_new = bgp_attr_intern(attr); | |
1338 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1339 | ||
1340 | /* Restore route, if needed. */ | |
1341 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1342 | bgp_info_restore(rn, tmp_ri); | |
1343 | ||
1344 | /* Unintern existing, set to new. */ | |
1345 | bgp_attr_unintern(&tmp_ri->attr); | |
1346 | tmp_ri->attr = attr_new; | |
1347 | tmp_ri->uptime = bgp_clock(); | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | /* Return back the route entry. */ | |
1352 | *ri = tmp_ri; | |
1353 | return 0; | |
1354 | } | |
1355 | ||
1356 | /* update evpn es (type-4) route */ | |
1357 | static int update_evpn_type4_route(struct bgp *bgp, | |
1358 | struct evpnes *es, | |
1359 | struct prefix_evpn *p) | |
1360 | { | |
1361 | int ret = 0; | |
1362 | int route_changed = 0; | |
1363 | char buf[ESI_STR_LEN]; | |
1364 | char buf1[INET6_ADDRSTRLEN]; | |
1365 | afi_t afi = AFI_L2VPN; | |
1366 | safi_t safi = SAFI_EVPN; | |
1367 | struct attr attr; | |
1368 | struct attr *attr_new = NULL; | |
1369 | struct bgp_node *rn = NULL; | |
1370 | struct bgp_info *ri = NULL; | |
1371 | ||
1372 | memset(&attr, 0, sizeof(struct attr)); | |
1373 | ||
1374 | /* Build path-attribute for this route. */ | |
1375 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1376 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1377 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1378 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1379 | ||
1380 | /* Set up extended community. */ | |
1381 | build_evpn_type4_route_extcomm(es, &attr); | |
1382 | ||
1383 | /* First, create (or fetch) route node within the ESI. */ | |
1384 | /* NOTE: There is no RD here. */ | |
1385 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1386 | ||
1387 | /* Create or update route entry. */ | |
1388 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, | |
1389 | &attr, 1, &ri, | |
1390 | &route_changed); | |
1391 | if (ret != 0) { | |
af4c2728 | 1392 | flog_err( |
14454c9f DS |
1393 | BGP_ERR_ES_INVALID, |
1394 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1395 | bgp->vrf_id, | |
1396 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1397 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1398 | } |
1399 | ||
1400 | assert(ri); | |
1401 | attr_new = ri->attr; | |
1402 | ||
1403 | /* Perform route selection; | |
1404 | * this is just to set the flags correctly | |
1405 | * as local route in the ES always wins. | |
1406 | */ | |
1407 | evpn_es_route_select_install(bgp, es, rn); | |
1408 | bgp_unlock_node(rn); | |
1409 | ||
1410 | /* If this is a new route or some attribute has changed, export the | |
1411 | * route to the global table. The route will be advertised to peers | |
1412 | * from there. Note that this table is a 2-level tree (RD-level + | |
1413 | * Prefix-level) similar to L3VPN routes. | |
1414 | */ | |
1415 | if (route_changed) { | |
1416 | struct bgp_info *global_ri; | |
1417 | ||
1418 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1419 | (struct prefix *)p, &es->prd); | |
1420 | update_evpn_type4_route_entry(bgp, es, afi, safi, | |
1421 | rn, attr_new, | |
1422 | 1, &global_ri, | |
1423 | &route_changed); | |
1424 | ||
1425 | /* Schedule for processing and unlock node. */ | |
1426 | bgp_process(bgp, rn, afi, safi); | |
1427 | bgp_unlock_node(rn); | |
1428 | } | |
1429 | ||
1430 | /* Unintern temporary. */ | |
1431 | aspath_unintern(&attr.aspath); | |
1432 | return 0; | |
1433 | } | |
1434 | ||
342dd0c6 | 1435 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1436 | struct bgp *bgp_vrf, afi_t afi, | |
1437 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1438 | struct attr *attr, int *route_changed) |
342dd0c6 | 1439 | { |
1440 | struct attr *attr_new = NULL; | |
1441 | struct bgp_info *ri = NULL; | |
1442 | mpls_label_t label = MPLS_INVALID_LABEL; | |
1443 | struct bgp_info *local_ri = NULL; | |
1444 | struct bgp_info *tmp_ri = NULL; | |
1445 | ||
5424b7ba | 1446 | *route_changed = 0; |
342dd0c6 | 1447 | /* locate the local route entry if any */ |
1448 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1449 | if (tmp_ri->peer == bgp_def->peer_self | |
1450 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1451 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1452 | local_ri = tmp_ri; | |
1453 | } | |
1454 | ||
2bb9eff4 DS |
1455 | /* |
1456 | * create a new route entry if one doesnt exist. | |
1457 | * Otherwise see if route attr has changed | |
523cafc4 | 1458 | */ |
342dd0c6 | 1459 | if (!local_ri) { |
1460 | ||
5424b7ba MK |
1461 | /* route has changed as this is the first entry */ |
1462 | *route_changed = 1; | |
1463 | ||
342dd0c6 | 1464 | /* Add (or update) attribute to hash. */ |
1465 | attr_new = bgp_attr_intern(attr); | |
1466 | ||
1467 | /* create the route info from attribute */ | |
1468 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1469 | bgp_def->peer_self, attr_new, rn); | |
1470 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1471 | ||
b57ba6d2 | 1472 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1473 | bgp_info_extra_get(ri); |
1474 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1475 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1476 | ri->extra->num_labels = 1; | |
342dd0c6 | 1477 | |
1478 | /* add the route entry to route node*/ | |
1479 | bgp_info_add(rn, ri); | |
1480 | } else { | |
1481 | ||
1482 | tmp_ri = local_ri; | |
1483 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1484 | |
1485 | /* attribute changed */ | |
1486 | *route_changed = 1; | |
1487 | ||
342dd0c6 | 1488 | /* The attribute has changed. */ |
1489 | /* Add (or update) attribute to hash. */ | |
1490 | attr_new = bgp_attr_intern(attr); | |
1491 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1492 | ||
1493 | /* Restore route, if needed. */ | |
1494 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1495 | bgp_info_restore(rn, tmp_ri); | |
1496 | ||
1497 | /* Unintern existing, set to new. */ | |
1498 | bgp_attr_unintern(&tmp_ri->attr); | |
1499 | tmp_ri->attr = attr_new; | |
1500 | tmp_ri->uptime = bgp_clock(); | |
1501 | } | |
1502 | } | |
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1507 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1508 | struct attr *src_attr) | |
342dd0c6 | 1509 | { |
1510 | afi_t afi = AFI_L2VPN; | |
1511 | safi_t safi = SAFI_EVPN; | |
1512 | struct attr attr; | |
1513 | struct bgp_node *rn = NULL; | |
1514 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1515 | int route_changed = 0; |
342dd0c6 | 1516 | |
1517 | bgp_def = bgp_get_default(); | |
1518 | if (!bgp_def) | |
faafdfa8 | 1519 | return 0; |
342dd0c6 | 1520 | |
2f69f6d3 | 1521 | /* Build path attribute for this route - use the source attr, if |
1522 | * present, else treat as locally originated. | |
1523 | */ | |
1524 | if (src_attr) | |
1525 | bgp_attr_dup(&attr, src_attr); | |
1526 | else { | |
1527 | memset(&attr, 0, sizeof(struct attr)); | |
1528 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1529 | } | |
1530 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1531 | attr.nexthop = bgp_vrf->originator_ip; |
1532 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1533 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1534 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1535 | ||
1536 | /* Setup RT and encap extended community */ | |
1537 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1538 | ||
1539 | /* get the route node in global table */ | |
1540 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1541 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1542 | assert(rn); |
1543 | ||
1544 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1545 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1546 | &route_changed); | |
342dd0c6 | 1547 | |
1548 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1549 | if (route_changed) { |
1550 | bgp_process(bgp_def, rn, afi, safi); | |
1551 | bgp_unlock_node(rn); | |
1552 | } | |
342dd0c6 | 1553 | |
1554 | /* uninten temporary */ | |
5ee65f6f | 1555 | if (!src_attr) |
1556 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1557 | return 0; |
1558 | } | |
1559 | ||
128ea8ab | 1560 | /* |
1561 | * Create or update EVPN route entry. This could be in the VNI route table | |
1562 | * or the global route table. | |
1563 | */ | |
d62a17ae | 1564 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1565 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1566 | struct attr *attr, int add, |
9df2b997 | 1567 | struct bgp_info **ri, uint8_t flags, |
f07e1c99 | 1568 | uint32_t seq) |
d62a17ae | 1569 | { |
1570 | struct bgp_info *tmp_ri; | |
f07e1c99 | 1571 | struct bgp_info *local_ri; |
d62a17ae | 1572 | struct attr *attr_new; |
b57ba6d2 | 1573 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1574 | uint32_t num_labels = 1; |
d62a17ae | 1575 | int route_change = 1; |
d7c0a89a | 1576 | uint8_t sticky = 0; |
b57ba6d2 | 1577 | struct prefix_evpn *evp; |
d62a17ae | 1578 | |
1579 | *ri = NULL; | |
b57ba6d2 MK |
1580 | evp = (struct prefix_evpn *)&rn->p; |
1581 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1582 | |
f07e1c99 | 1583 | /* See if this is an update of an existing route, or a new add. */ |
1584 | local_ri = NULL; | |
d62a17ae | 1585 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { |
1586 | if (tmp_ri->peer == bgp->peer_self | |
1587 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1588 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1589 | local_ri = tmp_ri; | |
d62a17ae | 1590 | } |
1591 | ||
1592 | /* If route doesn't exist already, create a new one, if told to. | |
1593 | * Otherwise act based on whether the attributes of the route have | |
1594 | * changed or not. | |
1595 | */ | |
1596 | if (!local_ri && !add) | |
1597 | return 0; | |
1598 | ||
f07e1c99 | 1599 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1600 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1601 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1602 | |
f07e1c99 | 1603 | if (!local_ri) { |
d62a17ae | 1604 | /* Add (or update) attribute to hash. */ |
1605 | attr_new = bgp_attr_intern(attr); | |
1606 | ||
1607 | /* Extract MAC mobility sequence number, if any. */ | |
1608 | attr_new->mm_seqnum = | |
1609 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1610 | attr_new->sticky = sticky; | |
1611 | ||
1612 | /* Create new route with its attribute. */ | |
1613 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1614 | bgp->peer_self, attr_new, rn); | |
1615 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1616 | bgp_info_extra_get(tmp_ri); | |
1617 | ||
1618 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1619 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1620 | |
1621 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1622 | * Only attach second label if we are advertising two labels for | |
1623 | * type-2 routes. | |
1624 | */ | |
996c9314 LB |
1625 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1626 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1627 | vni_t l3vni; |
1628 | ||
1629 | l3vni = bgpevpn_get_l3vni(vpn); | |
1630 | if (l3vni) { | |
1631 | vni2label(l3vni, &label[1]); | |
1632 | num_labels++; | |
1633 | } | |
1634 | } | |
d62a17ae | 1635 | |
b57ba6d2 MK |
1636 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1637 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1638 | bgp_info_add(rn, tmp_ri); |
1639 | } else { | |
1640 | tmp_ri = local_ri; | |
1641 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1642 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1643 | route_change = 0; | |
1644 | else { | |
c48d9f5f MK |
1645 | /* |
1646 | * The attributes have changed, type-2 routes needs to | |
1647 | * be advertised with right labels. | |
1648 | */ | |
1649 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1650 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1651 | && CHECK_FLAG(vpn->flags, | |
1652 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1653 | vni_t l3vni; |
1654 | ||
1655 | l3vni = bgpevpn_get_l3vni(vpn); | |
1656 | if (l3vni) { | |
1657 | vni2label(l3vni, &label[1]); | |
1658 | num_labels++; | |
1659 | } | |
1660 | } | |
1661 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1662 | tmp_ri->extra->num_labels = num_labels; | |
1663 | ||
d62a17ae | 1664 | /* The attribute has changed. */ |
1665 | /* Add (or update) attribute to hash. */ | |
1666 | attr_new = bgp_attr_intern(attr); | |
1667 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1668 | ||
f07e1c99 | 1669 | /* Extract MAC mobility sequence number, if any. */ |
1670 | attr_new->mm_seqnum = | |
1671 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1672 | attr_new->sticky = sticky; | |
1673 | ||
d62a17ae | 1674 | /* Restore route, if needed. */ |
1675 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1676 | bgp_info_restore(rn, tmp_ri); | |
1677 | ||
1678 | /* Unintern existing, set to new. */ | |
1679 | bgp_attr_unintern(&tmp_ri->attr); | |
1680 | tmp_ri->attr = attr_new; | |
1681 | tmp_ri->uptime = bgp_clock(); | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | /* Return back the route entry. */ | |
1686 | *ri = tmp_ri; | |
1687 | return route_change; | |
128ea8ab | 1688 | } |
1689 | ||
1690 | /* | |
1691 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1692 | * and schedule for processing. | |
1693 | */ | |
d62a17ae | 1694 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1695 | struct prefix_evpn *p, uint8_t flags, |
1696 | uint32_t seq) | |
128ea8ab | 1697 | { |
d62a17ae | 1698 | struct bgp_node *rn; |
1699 | struct attr attr; | |
1700 | struct attr *attr_new; | |
1ec31309 | 1701 | int add_l3_ecomm = 0; |
d62a17ae | 1702 | struct bgp_info *ri; |
1703 | afi_t afi = AFI_L2VPN; | |
1704 | safi_t safi = SAFI_EVPN; | |
1705 | int route_change; | |
128ea8ab | 1706 | |
d62a17ae | 1707 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1708 | |
d62a17ae | 1709 | /* Build path-attribute for this route. */ |
1710 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1711 | attr.nexthop = vpn->originator_ip; | |
1712 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1713 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1714 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1715 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1716 | attr.router_flag = CHECK_FLAG(flags, |
1717 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1718 | |
1719 | /* PMSI is only needed for type-3 routes */ | |
1720 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1721 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1722 | ||
1ec31309 | 1723 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1724 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1725 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1726 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1727 | |
1ec31309 | 1728 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1729 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1730 | * these routes. | |
1731 | */ | |
1732 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1733 | (is_evpn_prefix_ipaddr_v4(p) || |
1734 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1735 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1736 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1737 | add_l3_ecomm = 1; |
1738 | ||
1739 | /* Set up extended community. */ | |
1740 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1741 | |
d62a17ae | 1742 | /* First, create (or fetch) route node within the VNI. */ |
1743 | /* NOTE: There is no RD here. */ | |
1744 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1745 | |
d62a17ae | 1746 | /* Create or update route entry. */ |
1747 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
f07e1c99 | 1748 | 1, &ri, flags, seq); |
d62a17ae | 1749 | assert(ri); |
1750 | attr_new = ri->attr; | |
128ea8ab | 1751 | |
d62a17ae | 1752 | /* Perform route selection; this is just to set the flags correctly |
1753 | * as local route in the VNI always wins. | |
1754 | */ | |
1755 | evpn_route_select_install(bgp, vpn, rn); | |
1756 | bgp_unlock_node(rn); | |
128ea8ab | 1757 | |
d62a17ae | 1758 | /* If this is a new route or some attribute has changed, export the |
1759 | * route to the global table. The route will be advertised to peers | |
1760 | * from there. Note that this table is a 2-level tree (RD-level + | |
1761 | * Prefix-level) similar to L3VPN routes. | |
1762 | */ | |
1763 | if (route_change) { | |
1764 | struct bgp_info *global_ri; | |
128ea8ab | 1765 | |
d62a17ae | 1766 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1767 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1768 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
1769 | &global_ri, flags, seq); | |
128ea8ab | 1770 | |
d62a17ae | 1771 | /* Schedule for processing and unlock node. */ |
1772 | bgp_process(bgp, rn, afi, safi); | |
1773 | bgp_unlock_node(rn); | |
1774 | } | |
128ea8ab | 1775 | |
d62a17ae | 1776 | /* Unintern temporary. */ |
1777 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1778 | |
d62a17ae | 1779 | return 0; |
128ea8ab | 1780 | } |
1781 | ||
50f74cf1 | 1782 | /* |
1783 | * Delete EVPN route entry. | |
1784 | * The entry can be in ESI/VNI table or the global table. | |
1785 | */ | |
1786 | static void delete_evpn_route_entry(struct bgp *bgp, | |
1787 | afi_t afi, safi_t safi, | |
1788 | struct bgp_node *rn, | |
1789 | struct bgp_info **ri) | |
342dd0c6 | 1790 | { |
50f74cf1 | 1791 | struct bgp_info *tmp_ri; |
342dd0c6 | 1792 | |
1793 | *ri = NULL; | |
1794 | ||
50f74cf1 | 1795 | /* Now, find matching route. */ |
342dd0c6 | 1796 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) |
50f74cf1 | 1797 | if (tmp_ri->peer == bgp->peer_self |
342dd0c6 | 1798 | && tmp_ri->type == ZEBRA_ROUTE_BGP |
1799 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1800 | break; | |
1801 | ||
1802 | *ri = tmp_ri; | |
1803 | ||
1804 | /* Mark route for delete. */ | |
1805 | if (tmp_ri) | |
1806 | bgp_info_delete(rn, tmp_ri); | |
1807 | } | |
1808 | ||
50f74cf1 | 1809 | |
1810 | ||
1811 | /* Delete EVPN ES (type-4) route */ | |
1812 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1813 | struct evpnes *es, | |
1814 | struct prefix_evpn *p) | |
1815 | { | |
1816 | afi_t afi = AFI_L2VPN; | |
1817 | safi_t safi = SAFI_EVPN; | |
1818 | struct bgp_info *ri; | |
1819 | struct bgp_node *rn = NULL; /* rn in esi table */ | |
1820 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1821 | ||
1822 | /* First, locate the route node within the ESI. | |
1823 | * If it doesn't exist, ther is nothing to do. | |
1824 | * Note: there is no RD here. | |
1825 | */ | |
1826 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1827 | if (!rn) |
50f74cf1 | 1828 | return 0; |
1829 | ||
1830 | /* Next, locate route node in the global EVPN routing table. | |
1831 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1832 | */ | |
1833 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1834 | (struct prefix *)p, &es->prd); | |
1835 | if (global_rn) { | |
1836 | ||
1837 | /* Delete route entry in the global EVPN table. */ | |
1838 | delete_evpn_route_entry(bgp, afi, safi, | |
1839 | global_rn, &ri); | |
1840 | ||
1841 | /* Schedule for processing - withdraws to peers happen from | |
1842 | * this table. | |
1843 | */ | |
1844 | if (ri) | |
1845 | bgp_process(bgp, global_rn, afi, safi); | |
1846 | bgp_unlock_node(global_rn); | |
1847 | } | |
1848 | ||
1849 | /* | |
1850 | * Delete route entry in the ESI route table. | |
1851 | * This can just be removed. | |
1852 | */ | |
1853 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); | |
1854 | if (ri) | |
1855 | bgp_info_reap(rn, ri); | |
1856 | bgp_unlock_node(rn); | |
1857 | return 0; | |
1858 | } | |
1859 | ||
342dd0c6 | 1860 | /* Delete EVPN type5 route */ |
996c9314 | 1861 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1862 | { |
1863 | afi_t afi = AFI_L2VPN; | |
1864 | safi_t safi = SAFI_EVPN; | |
1865 | struct bgp_node *rn = NULL; | |
1866 | struct bgp_info *ri = NULL; | |
1867 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1868 | ||
1869 | bgp_def = bgp_get_default(); | |
1870 | if (!bgp_def) | |
faafdfa8 | 1871 | return 0; |
342dd0c6 | 1872 | |
1873 | /* locate the global route entry for this type-5 prefix */ | |
1874 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1875 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1876 | if (!rn) | |
1877 | return 0; | |
1878 | ||
50f74cf1 | 1879 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &ri); |
342dd0c6 | 1880 | if (ri) |
1881 | bgp_process(bgp_def, rn, afi, safi); | |
1882 | bgp_unlock_node(rn); | |
1883 | return 0; | |
1884 | } | |
1885 | ||
128ea8ab | 1886 | /* |
1887 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1888 | * schedule for processing. | |
1889 | */ | |
d62a17ae | 1890 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1891 | struct prefix_evpn *p) | |
1892 | { | |
1893 | struct bgp_node *rn, *global_rn; | |
1894 | struct bgp_info *ri; | |
1895 | afi_t afi = AFI_L2VPN; | |
1896 | safi_t safi = SAFI_EVPN; | |
1897 | ||
1898 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1899 | * there | |
1900 | * is nothing further to do. | |
1901 | */ | |
1902 | /* NOTE: There is no RD here. */ | |
1903 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1904 | if (!rn) | |
1905 | return 0; | |
1906 | ||
1907 | /* Next, locate route node in the global EVPN routing table. Note that | |
1908 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1909 | * L3VPN routes. | |
1910 | */ | |
1911 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1912 | (struct prefix *)p, &vpn->prd); | |
1913 | if (global_rn) { | |
1914 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 1915 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
d62a17ae | 1916 | |
1917 | /* Schedule for processing - withdraws to peers happen from | |
1918 | * this table. | |
1919 | */ | |
1920 | if (ri) | |
1921 | bgp_process(bgp, global_rn, afi, safi); | |
1922 | bgp_unlock_node(global_rn); | |
1923 | } | |
1924 | ||
1925 | /* Delete route entry in the VNI route table. This can just be removed. | |
1926 | */ | |
50f74cf1 | 1927 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 1928 | if (ri) |
1929 | bgp_info_reap(rn, ri); | |
1930 | bgp_unlock_node(rn); | |
1931 | ||
1932 | return 0; | |
128ea8ab | 1933 | } |
1934 | ||
1935 | /* | |
1936 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1937 | * be scheduled for advertise to peers. | |
1938 | */ | |
d62a17ae | 1939 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1940 | { | |
1941 | afi_t afi; | |
1942 | safi_t safi; | |
1943 | struct bgp_node *rn; | |
f07e1c99 | 1944 | struct bgp_info *ri, *tmp_ri; |
d62a17ae | 1945 | struct attr attr; |
d62a17ae | 1946 | struct attr *attr_new; |
f07e1c99 | 1947 | uint32_t seq; |
1ec31309 | 1948 | int add_l3_ecomm = 0; |
d62a17ae | 1949 | |
1950 | afi = AFI_L2VPN; | |
1951 | safi = SAFI_EVPN; | |
d62a17ae | 1952 | |
1953 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1954 | * routes updated, update corresponding entry in the global table too. | |
1955 | */ | |
1956 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1957 | rn = bgp_route_next(rn)) { | |
1958 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1959 | struct bgp_node *rd_rn; | |
1960 | struct bgp_info *global_ri; | |
1961 | ||
1962 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1963 | continue; | |
1964 | ||
f07e1c99 | 1965 | /* Identify local route. */ |
1966 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1967 | if (tmp_ri->peer == bgp->peer_self | |
1968 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1969 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1970 | break; | |
7ec156a9 | 1971 | } |
d62a17ae | 1972 | |
f07e1c99 | 1973 | if (!tmp_ri) |
d62a17ae | 1974 | continue; |
1975 | ||
f07e1c99 | 1976 | /* |
1977 | * Build attribute per local route as the MAC mobility and | |
1978 | * some other values could differ for different routes. The | |
1979 | * attributes will be shared in the hash table. | |
1980 | */ | |
1981 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1982 | attr.nexthop = vpn->originator_ip; | |
1983 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1984 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1985 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
1986 | ||
1987 | if (evpn_route_is_sticky(bgp, rn)) | |
1988 | attr.sticky = 1; | |
1989 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
1990 | attr.default_gw = 1; | |
1991 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1992 | attr.router_flag = 1; | |
1993 | } | |
1994 | ||
1995 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1996 | * using L3 VNI for type-2 routes also. | |
1997 | */ | |
1998 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 1999 | !IN6_IS_ADDR_LINKLOCAL( |
2000 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2001 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2002 | bgpevpn_get_l3vni(vpn)) | |
2003 | add_l3_ecomm = 1; | |
2004 | ||
2005 | /* Set up extended community. */ | |
2006 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2007 | ||
2008 | seq = mac_mobility_seqnum(tmp_ri->attr); | |
2009 | ||
2010 | /* Update the route entry. */ | |
2011 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
2012 | &attr, 0, &ri, 0, seq); | |
2013 | ||
d62a17ae | 2014 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2015 | * correctly as local route in the VNI always wins. |
d62a17ae | 2016 | */ |
2017 | evpn_route_select_install(bgp, vpn, rn); | |
2018 | ||
2019 | attr_new = ri->attr; | |
2020 | ||
2021 | /* Update route in global routing table. */ | |
2022 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2023 | (struct prefix *)evp, &vpn->prd); | |
2024 | assert(rd_rn); | |
2025 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
f07e1c99 | 2026 | &global_ri, 0, |
2027 | mac_mobility_seqnum(attr_new)); | |
d62a17ae | 2028 | |
2029 | /* Schedule for processing and unlock node. */ | |
2030 | bgp_process(bgp, rd_rn, afi, safi); | |
2031 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2032 | |
f07e1c99 | 2033 | /* Unintern temporary. */ |
2034 | aspath_unintern(&attr.aspath); | |
2035 | ||
2036 | } | |
d62a17ae | 2037 | |
2038 | return 0; | |
128ea8ab | 2039 | } |
2040 | ||
2041 | /* | |
2042 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2043 | * global routing table. These are also scheduled for withdraw from peers. | |
2044 | */ | |
d62a17ae | 2045 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2046 | { |
d62a17ae | 2047 | afi_t afi; |
2048 | safi_t safi; | |
2049 | struct bgp_node *rdrn, *rn; | |
2050 | struct bgp_table *table; | |
2051 | struct bgp_info *ri; | |
128ea8ab | 2052 | |
d62a17ae | 2053 | afi = AFI_L2VPN; |
2054 | safi = SAFI_EVPN; | |
128ea8ab | 2055 | |
d62a17ae | 2056 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2057 | if (rdrn && rdrn->info) { | |
2058 | table = (struct bgp_table *)rdrn->info; | |
2059 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2060 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2061 | |
d62a17ae | 2062 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2063 | continue; | |
128ea8ab | 2064 | |
50f74cf1 | 2065 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 2066 | if (ri) |
2067 | bgp_process(bgp, rn, afi, safi); | |
2068 | } | |
2069 | } | |
128ea8ab | 2070 | |
d62a17ae | 2071 | /* Unlock RD node. */ |
2072 | if (rdrn) | |
2073 | bgp_unlock_node(rdrn); | |
128ea8ab | 2074 | |
d62a17ae | 2075 | return 0; |
128ea8ab | 2076 | } |
2077 | ||
2078 | /* | |
2079 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2080 | * table as well as the per-VNI route table. | |
2081 | */ | |
d62a17ae | 2082 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2083 | { |
d62a17ae | 2084 | afi_t afi; |
2085 | safi_t safi; | |
2086 | struct bgp_node *rn; | |
2087 | struct bgp_info *ri; | |
128ea8ab | 2088 | |
d62a17ae | 2089 | afi = AFI_L2VPN; |
2090 | safi = SAFI_EVPN; | |
128ea8ab | 2091 | |
d62a17ae | 2092 | /* First, walk the global route table for this VNI's type-2 local |
2093 | * routes. | |
2094 | * EVPN routes are a 2-level table, first get the RD table. | |
2095 | */ | |
2096 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2097 | |
d62a17ae | 2098 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2099 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2100 | rn = bgp_route_next(rn)) { | |
2101 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2102 | |
d62a17ae | 2103 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2104 | continue; | |
128ea8ab | 2105 | |
50f74cf1 | 2106 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
128ea8ab | 2107 | |
d62a17ae | 2108 | /* Route entry in local table gets deleted immediately. */ |
2109 | if (ri) | |
2110 | bgp_info_reap(rn, ri); | |
2111 | } | |
128ea8ab | 2112 | |
d62a17ae | 2113 | return 0; |
128ea8ab | 2114 | } |
2115 | ||
50f74cf1 | 2116 | /* |
2117 | * Delete all routes in per ES route-table | |
2118 | */ | |
2119 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2120 | { | |
2121 | struct bgp_node *rn; | |
2122 | struct bgp_info *ri, *nextri; | |
2123 | ||
2124 | /* Walk this ES's route table and delete all routes. */ | |
2125 | for (rn = bgp_table_top(es->route_table); rn; | |
2126 | rn = bgp_route_next(rn)) { | |
2127 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2128 | ri = nextri) { | |
2129 | bgp_info_delete(rn, ri); | |
2130 | bgp_info_reap(rn, ri); | |
2131 | } | |
2132 | } | |
2133 | ||
2134 | return 0; | |
2135 | } | |
2136 | ||
128ea8ab | 2137 | /* |
2138 | * Delete all routes in the per-VNI route table. | |
2139 | */ | |
d62a17ae | 2140 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2141 | { |
d62a17ae | 2142 | struct bgp_node *rn; |
2143 | struct bgp_info *ri, *nextri; | |
128ea8ab | 2144 | |
d62a17ae | 2145 | /* Walk this VNI's route table and delete all routes. */ |
2146 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2147 | rn = bgp_route_next(rn)) { | |
2148 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2149 | ri = nextri) { | |
2150 | bgp_info_delete(rn, ri); | |
2151 | bgp_info_reap(rn, ri); | |
2152 | } | |
2153 | } | |
128ea8ab | 2154 | |
d62a17ae | 2155 | return 0; |
128ea8ab | 2156 | } |
2157 | ||
2158 | /* | |
2159 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2160 | * export RT getting modified or change to tunnel IP. Note that these | |
2161 | * situations need the route in the per-VNI table as well as the global | |
2162 | * table to be updated (as attributes change). | |
2163 | */ | |
d62a17ae | 2164 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2165 | { |
d62a17ae | 2166 | int ret; |
2167 | struct prefix_evpn p; | |
128ea8ab | 2168 | |
d62a17ae | 2169 | /* Update and advertise the type-3 route (only one) followed by the |
2170 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2171 | */ | |
2172 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 2173 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); |
d62a17ae | 2174 | if (ret) |
2175 | return ret; | |
128ea8ab | 2176 | |
d62a17ae | 2177 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2178 | } |
2179 | ||
50f74cf1 | 2180 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2181 | * Also remove all other routes from the per ES table. | |
2182 | * Invoked when ES is deleted. | |
2183 | */ | |
2184 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2185 | { | |
2186 | int ret; | |
2187 | char buf[ESI_STR_LEN]; | |
2188 | struct prefix_evpn p; | |
2189 | ||
2190 | /* Delete and withdraw locally learnt ES route */ | |
2191 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2192 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2193 | if (ret) { | |
af4c2728 | 2194 | flog_err(BGP_ERR_EVPN_ROUTE_DELETE, |
14454c9f DS |
2195 | "%u failed to delete type-4 route for ESI %s", |
2196 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2197 | } |
2198 | ||
2199 | /* Delete all routes from per ES table */ | |
2200 | return delete_all_es_routes(bgp, es); | |
2201 | } | |
2202 | ||
128ea8ab | 2203 | /* |
2204 | * Delete (and withdraw) local routes for specified VNI from the global | |
2205 | * table and per-VNI table. After this, remove all other routes from | |
2206 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2207 | * (advertise-all-vni) being disabled. | |
2208 | */ | |
d62a17ae | 2209 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2210 | { |
d62a17ae | 2211 | int ret; |
2212 | struct prefix_evpn p; | |
128ea8ab | 2213 | |
d62a17ae | 2214 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2215 | * followed by type-3 routes (only one) - for this VNI. | |
2216 | */ | |
2217 | ret = delete_all_type2_routes(bgp, vpn); | |
2218 | if (ret) | |
2219 | return ret; | |
128ea8ab | 2220 | |
d62a17ae | 2221 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2222 | ret = delete_evpn_route(bgp, vpn, &p); | |
2223 | if (ret) | |
2224 | return ret; | |
128ea8ab | 2225 | |
d62a17ae | 2226 | /* Delete all routes from the per-VNI table. */ |
2227 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2228 | } |
2229 | ||
2230 | /* | |
d1911c26 | 2231 | * There is a tunnel endpoint IP address change for this VNI, delete |
2232 | * prior type-3 route (if needed) and update. | |
2233 | * Note: Route re-advertisement happens elsewhere after other processing | |
2234 | * other changes. | |
128ea8ab | 2235 | */ |
d62a17ae | 2236 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2237 | struct in_addr originator_ip) | |
128ea8ab | 2238 | { |
d62a17ae | 2239 | struct prefix_evpn p; |
128ea8ab | 2240 | |
ddd16ed5 MK |
2241 | /* If VNI is not live, we only need to update the originator ip */ |
2242 | if (!is_vni_live(vpn)) { | |
2243 | vpn->originator_ip = originator_ip; | |
2244 | return 0; | |
2245 | } | |
2246 | ||
db0e1937 MK |
2247 | /* Update the tunnel-ip hash */ |
2248 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2249 | bgp_tip_add(bgp, &originator_ip); | |
2250 | ||
2251 | /* filter routes as martian nexthop db has changed */ | |
2252 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2253 | ||
d62a17ae | 2254 | /* Need to withdraw type-3 route as the originator IP is part |
2255 | * of the key. | |
2256 | */ | |
2257 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2258 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2259 | |
d62a17ae | 2260 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2261 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2262 | return 0; |
128ea8ab | 2263 | } |
2264 | ||
50f74cf1 | 2265 | /* Install EVPN route entry in ES */ |
2266 | static int install_evpn_route_entry_in_es(struct bgp *bgp, | |
2267 | struct evpnes *es, | |
2268 | struct prefix_evpn *p, | |
2269 | struct bgp_info *parent_ri) | |
2270 | { | |
2271 | int ret = 0; | |
2272 | struct bgp_node *rn = NULL; | |
2273 | struct bgp_info *ri = NULL; | |
2274 | struct attr *attr_new = NULL; | |
2275 | ||
2276 | /* Create (or fetch) route within the VNI. | |
2277 | * NOTE: There is no RD here. | |
2278 | */ | |
2279 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2280 | ||
2281 | /* Check if route entry is already present. */ | |
2282 | for (ri = rn->info; ri; ri = ri->next) | |
2283 | if (ri->extra && | |
2284 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2285 | break; | |
2286 | ||
2287 | if (!ri) { | |
2288 | /* Add (or update) attribute to hash. */ | |
2289 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2290 | ||
2291 | /* Create new route with its attribute. */ | |
2292 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, | |
2293 | parent_ri->peer, attr_new, rn); | |
2294 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2295 | bgp_info_extra_get(ri); | |
2296 | ri->extra->parent = parent_ri; | |
2297 | bgp_info_add(rn, ri); | |
2298 | } else { | |
2299 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2300 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2301 | bgp_unlock_node(rn); | |
2302 | return 0; | |
2303 | } | |
2304 | /* The attribute has changed. */ | |
2305 | /* Add (or update) attribute to hash. */ | |
2306 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2307 | ||
2308 | /* Restore route, if needed. */ | |
2309 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2310 | bgp_info_restore(rn, ri); | |
2311 | ||
2312 | /* Mark if nexthop has changed. */ | |
2313 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2314 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2315 | ||
2316 | /* Unintern existing, set to new. */ | |
2317 | bgp_attr_unintern(&ri->attr); | |
2318 | ri->attr = attr_new; | |
2319 | ri->uptime = bgp_clock(); | |
2320 | } | |
2321 | ||
2322 | /* Perform route selection and update zebra, if required. */ | |
2323 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2324 | return ret; | |
2325 | } | |
2326 | ||
d3135ba3 | 2327 | /* |
2328 | * Install route entry into the VRF routing table and invoke route selection. | |
2329 | */ | |
2330 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2331 | struct prefix_evpn *evp, | |
2332 | struct bgp_info *parent_ri) | |
2333 | { | |
2334 | struct bgp_node *rn; | |
2335 | struct bgp_info *ri; | |
1ec31309 | 2336 | struct attr attr; |
d3135ba3 | 2337 | struct attr *attr_new; |
c4edf708 | 2338 | int ret = 0; |
d3135ba3 | 2339 | struct prefix p; |
2340 | struct prefix *pp = &p; | |
2341 | afi_t afi = 0; | |
2342 | safi_t safi = 0; | |
1eb88002 MK |
2343 | char buf[PREFIX_STRLEN]; |
2344 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2345 | |
2346 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2347 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2348 | |
1eb88002 | 2349 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2350 | zlog_debug( |
2351 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2352 | prefix2str(evp, buf, sizeof(buf)), | |
2353 | prefix2str(pp, buf1, sizeof(buf)), | |
2354 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2355 | } |
2356 | ||
d3135ba3 | 2357 | /* Create (or fetch) route within the VRF. */ |
2358 | /* NOTE: There is no RD here. */ | |
3714a385 | 2359 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2360 | afi = AFI_IP; |
2361 | safi = SAFI_UNICAST; | |
2362 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2363 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2364 | afi = AFI_IP6; |
2365 | safi = SAFI_UNICAST; | |
2366 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2367 | } else | |
2368 | return 0; | |
2369 | ||
1ec31309 | 2370 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2371 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2372 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2373 | * address for the rest of the code to flow through. In the case of IPv4, | |
2374 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2375 | */ |
2376 | bgp_attr_dup(&attr, parent_ri->attr); | |
2377 | if (afi == AFI_IP6) | |
2378 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2379 | else |
2380 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2381 | |
d3135ba3 | 2382 | /* Check if route entry is already present. */ |
2383 | for (ri = rn->info; ri; ri = ri->next) | |
2384 | if (ri->extra | |
2385 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2386 | break; | |
2387 | ||
2388 | if (!ri) { | |
2389 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2390 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2391 | |
2392 | /* Create new route with its attribute. */ | |
90f4f482 | 2393 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 2394 | parent_ri->peer, attr_new, rn); |
2395 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2396 | bgp_info_extra_get(ri); | |
528cd74f | 2397 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2398 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2399 | if (parent_ri->extra) { |
d3135ba3 | 2400 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2401 | sizeof(ri->extra->label)); |
2402 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2403 | } | |
d3135ba3 | 2404 | bgp_info_add(rn, ri); |
2405 | } else { | |
1ec31309 | 2406 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 2407 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
2408 | bgp_unlock_node(rn); | |
2409 | return 0; | |
2410 | } | |
2411 | /* The attribute has changed. */ | |
2412 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2413 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2414 | |
2415 | /* Restore route, if needed. */ | |
2416 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2417 | bgp_info_restore(rn, ri); | |
2418 | ||
2419 | /* Mark if nexthop has changed. */ | |
1ec31309 | 2420 | if ((afi == AFI_IP && |
2421 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
2422 | (afi == AFI_IP6 && | |
2423 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
2424 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 2425 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
2426 | ||
2427 | /* Unintern existing, set to new. */ | |
2428 | bgp_attr_unintern(&ri->attr); | |
2429 | ri->attr = attr_new; | |
2430 | ri->uptime = bgp_clock(); | |
2431 | } | |
2432 | ||
2433 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2434 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2435 | |
2436 | return ret; | |
2437 | } | |
2438 | ||
128ea8ab | 2439 | /* |
2440 | * Install route entry into the VNI routing table and invoke route selection. | |
2441 | */ | |
d62a17ae | 2442 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2443 | struct prefix_evpn *p, | |
2444 | struct bgp_info *parent_ri) | |
2445 | { | |
2446 | struct bgp_node *rn; | |
2447 | struct bgp_info *ri; | |
2448 | struct attr *attr_new; | |
2449 | int ret; | |
2450 | ||
2451 | /* Create (or fetch) route within the VNI. */ | |
2452 | /* NOTE: There is no RD here. */ | |
2453 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2454 | ||
2455 | /* Check if route entry is already present. */ | |
2456 | for (ri = rn->info; ri; ri = ri->next) | |
2457 | if (ri->extra | |
2458 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2459 | break; | |
2460 | ||
2461 | if (!ri) { | |
2462 | /* Add (or update) attribute to hash. */ | |
2463 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2464 | ||
2465 | /* Create new route with its attribute. */ | |
90f4f482 | 2466 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 2467 | parent_ri->peer, attr_new, rn); |
2468 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2469 | bgp_info_extra_get(ri); | |
528cd74f | 2470 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2471 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2472 | if (parent_ri->extra) { |
d62a17ae | 2473 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2474 | sizeof(ri->extra->label)); |
2475 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2476 | } | |
d62a17ae | 2477 | bgp_info_add(rn, ri); |
2478 | } else { | |
2479 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2480 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2481 | bgp_unlock_node(rn); | |
2482 | return 0; | |
2483 | } | |
2484 | /* The attribute has changed. */ | |
2485 | /* Add (or update) attribute to hash. */ | |
2486 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2487 | ||
50f74cf1 | 2488 | /* Restore route, if needed. */ |
2489 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2490 | bgp_info_restore(rn, ri); | |
2491 | ||
2492 | /* Mark if nexthop has changed. */ | |
2493 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2494 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2495 | ||
2496 | /* Unintern existing, set to new. */ | |
2497 | bgp_attr_unintern(&ri->attr); | |
2498 | ri->attr = attr_new; | |
2499 | ri->uptime = bgp_clock(); | |
2500 | } | |
2501 | ||
2502 | /* Perform route selection and update zebra, if required. */ | |
2503 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2504 | ||
2505 | return ret; | |
2506 | } | |
2507 | ||
2508 | /* Uninstall EVPN route entry from ES route table */ | |
2509 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, | |
2510 | struct evpnes *es, | |
2511 | struct prefix_evpn *p, | |
2512 | struct bgp_info *parent_ri) | |
2513 | { | |
2514 | int ret; | |
2515 | struct bgp_node *rn; | |
2516 | struct bgp_info *ri; | |
2517 | ||
2518 | if (!es->route_table) | |
2519 | return 0; | |
2520 | ||
2521 | /* Locate route within the ESI. | |
2522 | * NOTE: There is no RD here. | |
2523 | */ | |
2524 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2525 | if (!rn) | |
2526 | return 0; | |
2527 | ||
2528 | /* Find matching route entry. */ | |
2529 | for (ri = rn->info; ri; ri = ri->next) | |
2530 | if (ri->extra && | |
2531 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2532 | break; | |
d62a17ae | 2533 | |
50f74cf1 | 2534 | if (!ri) |
2535 | return 0; | |
d62a17ae | 2536 | |
50f74cf1 | 2537 | /* Mark entry for deletion */ |
2538 | bgp_info_delete(rn, ri); | |
d62a17ae | 2539 | |
2540 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2541 | ret = evpn_es_route_select_install(bgp, es, rn); |
2542 | ||
2543 | /* Unlock route node. */ | |
2544 | bgp_unlock_node(rn); | |
d62a17ae | 2545 | |
2546 | return ret; | |
128ea8ab | 2547 | } |
2548 | ||
d3135ba3 | 2549 | /* |
2550 | * Uninstall route entry from the VRF routing table and send message | |
2551 | * to zebra, if appropriate. | |
2552 | */ | |
2553 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2554 | struct prefix_evpn *evp, | |
2555 | struct bgp_info *parent_ri) | |
2556 | { | |
2557 | struct bgp_node *rn; | |
2558 | struct bgp_info *ri; | |
c4edf708 | 2559 | int ret = 0; |
d3135ba3 | 2560 | struct prefix p; |
2561 | struct prefix *pp = &p; | |
2562 | afi_t afi = 0; | |
2563 | safi_t safi = 0; | |
1eb88002 MK |
2564 | char buf[PREFIX_STRLEN]; |
2565 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2566 | |
2567 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2568 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2569 | |
1eb88002 | 2570 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2571 | zlog_debug( |
2572 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2573 | prefix2str(evp, buf, sizeof(buf)), | |
2574 | prefix2str(pp, buf1, sizeof(buf)), | |
2575 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2576 | } |
2577 | ||
d3135ba3 | 2578 | /* Locate route within the VRF. */ |
2579 | /* NOTE: There is no RD here. */ | |
3714a385 | 2580 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2581 | afi = AFI_IP; |
2582 | safi = SAFI_UNICAST; | |
2583 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2584 | } else { | |
2585 | afi = AFI_IP6; | |
2586 | safi = SAFI_UNICAST; | |
2587 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2588 | } | |
2589 | ||
2590 | if (!rn) | |
2591 | return 0; | |
2592 | ||
2593 | /* Find matching route entry. */ | |
2594 | for (ri = rn->info; ri; ri = ri->next) | |
2595 | if (ri->extra | |
2596 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2597 | break; | |
2598 | ||
2599 | if (!ri) | |
2600 | return 0; | |
2601 | ||
2602 | /* Mark entry for deletion */ | |
2603 | bgp_info_delete(rn, ri); | |
2604 | ||
2605 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2606 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2607 | |
2608 | /* Unlock route node. */ | |
2609 | bgp_unlock_node(rn); | |
2610 | ||
2611 | return ret; | |
2612 | } | |
2613 | ||
128ea8ab | 2614 | /* |
2615 | * Uninstall route entry from the VNI routing table and send message | |
2616 | * to zebra, if appropriate. | |
2617 | */ | |
d62a17ae | 2618 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2619 | struct prefix_evpn *p, | |
2620 | struct bgp_info *parent_ri) | |
128ea8ab | 2621 | { |
d62a17ae | 2622 | struct bgp_node *rn; |
2623 | struct bgp_info *ri; | |
2624 | int ret; | |
128ea8ab | 2625 | |
d62a17ae | 2626 | /* Locate route within the VNI. */ |
2627 | /* NOTE: There is no RD here. */ | |
2628 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2629 | if (!rn) | |
2630 | return 0; | |
128ea8ab | 2631 | |
d62a17ae | 2632 | /* Find matching route entry. */ |
2633 | for (ri = rn->info; ri; ri = ri->next) | |
2634 | if (ri->extra | |
2635 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2636 | break; | |
128ea8ab | 2637 | |
d62a17ae | 2638 | if (!ri) |
2639 | return 0; | |
128ea8ab | 2640 | |
d62a17ae | 2641 | /* Mark entry for deletion */ |
2642 | bgp_info_delete(rn, ri); | |
128ea8ab | 2643 | |
d62a17ae | 2644 | /* Perform route selection and update zebra, if required. */ |
2645 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2646 | |
d62a17ae | 2647 | /* Unlock route node. */ |
2648 | bgp_unlock_node(rn); | |
128ea8ab | 2649 | |
d62a17ae | 2650 | return ret; |
128ea8ab | 2651 | } |
2652 | ||
50f74cf1 | 2653 | /* |
2654 | * Given a prefix, see if it belongs to ES. | |
2655 | */ | |
2656 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2657 | struct evpnes *es) | |
2658 | { | |
2659 | /* if not an ES route return false */ | |
2660 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2661 | return 0; | |
2662 | ||
2663 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2664 | return 1; | |
2665 | ||
2666 | return 0; | |
2667 | } | |
2668 | ||
5ba238b7 MK |
2669 | /* |
2670 | * Given a route entry and a VRF, see if this route entry should be | |
2671 | * imported into the VRF i.e., RTs match. | |
2672 | */ | |
996c9314 | 2673 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2674 | { |
2675 | struct attr *attr = ri->attr; | |
2676 | struct ecommunity *ecom; | |
2677 | int i; | |
2678 | ||
2679 | assert(attr); | |
2680 | /* Route should have valid RT to be even considered. */ | |
2681 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2682 | return 0; | |
2683 | ||
2684 | ecom = attr->ecommunity; | |
2685 | if (!ecom || !ecom->size) | |
2686 | return 0; | |
2687 | ||
2688 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2689 | * matches, we're done. | |
2690 | */ | |
2691 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2692 | uint8_t *pnt; |
2693 | uint8_t type, sub_type; | |
5ba238b7 MK |
2694 | struct ecommunity_val *eval; |
2695 | struct ecommunity_val eval_tmp; | |
2696 | struct vrf_irt_node *irt; | |
2697 | ||
2698 | /* Only deal with RTs */ | |
2699 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2700 | eval = (struct ecommunity_val *)(ecom->val | |
2701 | + (i * ECOMMUNITY_SIZE)); | |
2702 | type = *pnt++; | |
2703 | sub_type = *pnt++; | |
2704 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2705 | continue; | |
2706 | ||
2707 | /* See if this RT matches specified VNIs import RTs */ | |
2708 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2709 | if (irt) |
5ba238b7 MK |
2710 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2711 | return 1; | |
2712 | ||
2713 | /* Also check for non-exact match. In this, we mask out the AS | |
2714 | * and | |
2715 | * only check on the local-admin sub-field. This is to | |
2716 | * facilitate using | |
2717 | * VNI as the RT for EBGP peering too. | |
2718 | */ | |
2719 | irt = NULL; | |
2720 | if (type == ECOMMUNITY_ENCODE_AS | |
2721 | || type == ECOMMUNITY_ENCODE_AS4 | |
2722 | || type == ECOMMUNITY_ENCODE_IP) { | |
2723 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2724 | mask_ecom_global_admin(&eval_tmp, eval); | |
2725 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2726 | } | |
5d9cbca2 | 2727 | if (irt) |
5ba238b7 MK |
2728 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2729 | return 1; | |
2730 | } | |
2731 | ||
2732 | return 0; | |
2733 | } | |
2734 | ||
128ea8ab | 2735 | /* |
2736 | * Given a route entry and a VNI, see if this route entry should be | |
2737 | * imported into the VNI i.e., RTs match. | |
2738 | */ | |
d62a17ae | 2739 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2740 | struct bgp_info *ri) | |
2741 | { | |
2742 | struct attr *attr = ri->attr; | |
2743 | struct ecommunity *ecom; | |
2744 | int i; | |
2745 | ||
2746 | assert(attr); | |
2747 | /* Route should have valid RT to be even considered. */ | |
2748 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2749 | return 0; | |
2750 | ||
2751 | ecom = attr->ecommunity; | |
2752 | if (!ecom || !ecom->size) | |
2753 | return 0; | |
2754 | ||
2755 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2756 | * matches, we're done. | |
2757 | */ | |
2758 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2759 | uint8_t *pnt; |
2760 | uint8_t type, sub_type; | |
d62a17ae | 2761 | struct ecommunity_val *eval; |
2762 | struct ecommunity_val eval_tmp; | |
2763 | struct irt_node *irt; | |
2764 | ||
2765 | /* Only deal with RTs */ | |
2766 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2767 | eval = (struct ecommunity_val *)(ecom->val | |
2768 | + (i * ECOMMUNITY_SIZE)); | |
2769 | type = *pnt++; | |
2770 | sub_type = *pnt++; | |
2771 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2772 | continue; | |
2773 | ||
2774 | /* See if this RT matches specified VNIs import RTs */ | |
2775 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2776 | if (irt) |
d62a17ae | 2777 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2778 | return 1; | |
2779 | ||
2780 | /* Also check for non-exact match. In this, we mask out the AS | |
2781 | * and | |
2782 | * only check on the local-admin sub-field. This is to | |
2783 | * facilitate using | |
2784 | * VNI as the RT for EBGP peering too. | |
2785 | */ | |
2786 | irt = NULL; | |
2787 | if (type == ECOMMUNITY_ENCODE_AS | |
2788 | || type == ECOMMUNITY_ENCODE_AS4 | |
2789 | || type == ECOMMUNITY_ENCODE_IP) { | |
2790 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2791 | mask_ecom_global_admin(&eval_tmp, eval); | |
2792 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2793 | } | |
b1ab0dfe | 2794 | if (irt) |
d62a17ae | 2795 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2796 | return 1; | |
2797 | } | |
2798 | ||
2799 | return 0; | |
128ea8ab | 2800 | } |
2801 | ||
50f74cf1 | 2802 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2803 | struct evpnes *es, | |
2804 | int install) | |
2805 | { | |
2806 | int ret; | |
2807 | afi_t afi; | |
2808 | safi_t safi; | |
2809 | char buf[PREFIX_STRLEN]; | |
2810 | char buf1[ESI_STR_LEN]; | |
2811 | struct bgp_node *rd_rn, *rn; | |
2812 | struct bgp_table *table; | |
2813 | struct bgp_info *ri; | |
2814 | ||
2815 | afi = AFI_L2VPN; | |
2816 | safi = SAFI_EVPN; | |
2817 | ||
2bb9eff4 DS |
2818 | /* |
2819 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2820 | * imported into this VRF. Note that we need to loop through all global |
2821 | * routes to determine which route matches the import rt on vrf | |
2822 | */ | |
2823 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2824 | rd_rn = bgp_route_next(rd_rn)) { | |
2825 | table = (struct bgp_table *)(rd_rn->info); | |
2826 | if (!table) | |
2827 | continue; | |
2828 | ||
2829 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2830 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2831 | ||
2832 | for (ri = rn->info; ri; ri = ri->next) { | |
2bb9eff4 DS |
2833 | /* |
2834 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2835 | * this ES. |
2836 | */ | |
2837 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2838 | && ri->type == ZEBRA_ROUTE_BGP | |
2839 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2840 | continue; | |
2841 | ||
2bb9eff4 DS |
2842 | if (!is_prefix_matching_for_es(evp, es)) |
2843 | continue; | |
50f74cf1 | 2844 | |
2bb9eff4 DS |
2845 | if (install) |
2846 | ret = install_evpn_route_entry_in_es( | |
2847 | bgp, es, evp, ri); | |
2848 | else | |
2849 | ret = uninstall_evpn_route_entry_in_es( | |
2850 | bgp, es, evp, ri); | |
2851 | ||
2852 | if (ret) { | |
af4c2728 | 2853 | flog_err( |
14454c9f | 2854 | BGP_ERR_EVPN_FAIL, |
2bb9eff4 DS |
2855 | "Failed to %s EVPN %s route in ESI %s", |
2856 | install ? "install" | |
2857 | : "uninstall", | |
2858 | prefix2str(evp, buf, | |
2859 | sizeof(buf)), | |
2860 | esi_to_str(&es->esi, buf1, | |
2861 | sizeof(buf1))); | |
2862 | return ret; | |
50f74cf1 | 2863 | } |
2864 | } | |
2865 | } | |
2866 | } | |
2867 | return 0; | |
2868 | } | |
2869 | ||
5ba238b7 MK |
2870 | /* |
2871 | * Install or uninstall mac-ip routes are appropriate for this | |
2872 | * particular VRF. | |
2873 | */ | |
996c9314 | 2874 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2875 | { |
2876 | afi_t afi; | |
2877 | safi_t safi; | |
2878 | struct bgp_node *rd_rn, *rn; | |
2879 | struct bgp_table *table; | |
2880 | struct bgp_info *ri; | |
2881 | int ret; | |
2882 | char buf[PREFIX_STRLEN]; | |
2883 | struct bgp *bgp_def = NULL; | |
2884 | ||
2885 | afi = AFI_L2VPN; | |
2886 | safi = SAFI_EVPN; | |
2887 | bgp_def = bgp_get_default(); | |
2888 | if (!bgp_def) | |
2889 | return -1; | |
2890 | ||
2891 | /* Walk entire global routing table and evaluate routes which could be | |
2892 | * imported into this VRF. Note that we need to loop through all global | |
2893 | * routes to determine which route matches the import rt on vrf | |
2894 | */ | |
2895 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2896 | rd_rn = bgp_route_next(rd_rn)) { | |
2897 | table = (struct bgp_table *)(rd_rn->info); | |
2898 | if (!table) | |
2899 | continue; | |
2900 | ||
2901 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2902 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2903 | ||
1eb88002 | 2904 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2905 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2906 | || evp->prefix.route_type | |
2907 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2908 | continue; |
2909 | ||
1eb88002 | 2910 | /* if not a mac+ip route skip this route */ |
3714a385 | 2911 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2912 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2913 | continue; |
2914 | ||
5ba238b7 MK |
2915 | for (ri = rn->info; ri; ri = ri->next) { |
2916 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2917 | * this VRF. |
2918 | */ | |
5ba238b7 MK |
2919 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2920 | && ri->type == ZEBRA_ROUTE_BGP | |
2921 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2922 | continue; | |
2923 | ||
2924 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2925 | if (install) | |
996c9314 | 2926 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2927 | bgp_vrf, evp, ri); |
2928 | else | |
996c9314 | 2929 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2930 | bgp_vrf, evp, ri); |
2931 | ||
2932 | if (ret) { | |
af4c2728 | 2933 | flog_err( |
14454c9f | 2934 | BGP_ERR_EVPN_FAIL, |
5ba238b7 MK |
2935 | "Failed to %s EVPN %s route in VRF %s", |
2936 | install ? "install" | |
2937 | : "uninstall", | |
2938 | prefix2str(evp, buf, | |
2939 | sizeof(buf)), | |
996c9314 LB |
2940 | vrf_id_to_name( |
2941 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2942 | return ret; |
2943 | } | |
2944 | } | |
2945 | } | |
2946 | } | |
2947 | } | |
2948 | ||
2949 | return 0; | |
2950 | } | |
2951 | ||
128ea8ab | 2952 | /* |
2953 | * Install or uninstall routes of specified type that are appropriate for this | |
2954 | * particular VNI. | |
2955 | */ | |
d62a17ae | 2956 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2957 | struct bgpevpn *vpn, | |
2958 | bgp_evpn_route_type rtype, | |
2959 | int install) | |
2960 | { | |
0291c246 MK |
2961 | afi_t afi; |
2962 | safi_t safi; | |
2963 | struct bgp_node *rd_rn, *rn; | |
2964 | struct bgp_table *table; | |
2965 | struct bgp_info *ri; | |
2966 | int ret; | |
d62a17ae | 2967 | |
2968 | afi = AFI_L2VPN; | |
2969 | safi = SAFI_EVPN; | |
2970 | ||
2971 | /* Walk entire global routing table and evaluate routes which could be | |
2972 | * imported into this VPN. Note that we cannot just look at the routes | |
2973 | * for | |
2974 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2975 | * RD. | |
2976 | */ | |
2977 | /* EVPN routes are a 2-level table. */ | |
2978 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2979 | rd_rn = bgp_route_next(rd_rn)) { | |
2980 | table = (struct bgp_table *)(rd_rn->info); | |
2981 | if (!table) | |
2982 | continue; | |
2983 | ||
2984 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2985 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2986 | ||
2987 | if (evp->prefix.route_type != rtype) | |
2988 | continue; | |
2989 | ||
2990 | for (ri = rn->info; ri; ri = ri->next) { | |
2991 | /* Consider "valid" remote routes applicable for | |
2992 | * this VNI. */ | |
2993 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2994 | && ri->type == ZEBRA_ROUTE_BGP | |
2995 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2996 | continue; | |
2997 | ||
2998 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2999 | if (install) | |
3000 | ret = install_evpn_route_entry( | |
60466a63 | 3001 | bgp, vpn, evp, ri); |
d62a17ae | 3002 | else |
3003 | ret = uninstall_evpn_route_entry( | |
3004 | bgp, vpn, evp, ri); | |
3005 | ||
3006 | if (ret) { | |
af4c2728 | 3007 | flog_err( |
14454c9f | 3008 | BGP_ERR_EVPN_FAIL, |
d62a17ae | 3009 | "%u: Failed to %s EVPN %s route in VNI %u", |
3010 | bgp->vrf_id, | |
3011 | install ? "install" | |
3012 | : "uninstall", | |
3013 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3014 | ? "MACIP" | |
3015 | : "IMET", | |
3016 | vpn->vni); | |
3017 | return ret; | |
3018 | } | |
3019 | } | |
3020 | } | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | return 0; | |
128ea8ab | 3025 | } |
3026 | ||
50f74cf1 | 3027 | /* Install any existing remote ES routes applicable for this ES into its routing |
3028 | * table. This is invoked when ES comes up. | |
3029 | */ | |
3030 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3031 | { | |
3032 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3033 | } | |
3034 | ||
3035 | ||
5ba238b7 | 3036 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3037 | * is invoked upon l3vni-add or l3vni import rt change |
3038 | */ | |
5ba238b7 MK |
3039 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3040 | { | |
3041 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3042 | return 0; | |
3043 | } | |
3044 | ||
128ea8ab | 3045 | /* |
3046 | * Install any existing remote routes applicable for this VNI into its | |
3047 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3048 | * RT is changed. | |
3049 | */ | |
d62a17ae | 3050 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3051 | { |
d62a17ae | 3052 | int ret; |
128ea8ab | 3053 | |
d62a17ae | 3054 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3055 | * for this VNI. | |
3056 | */ | |
3057 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3058 | 1); | |
3059 | if (ret) | |
3060 | return ret; | |
128ea8ab | 3061 | |
d62a17ae | 3062 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3063 | 1); | |
128ea8ab | 3064 | } |
3065 | ||
5ba238b7 MK |
3066 | /* uninstall routes from l3vni vrf. */ |
3067 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3068 | { | |
3069 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3070 | return 0; | |
3071 | } | |
3072 | ||
90e60aa7 | 3073 | /* |
3074 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3075 | * this is invoked is upon an import RT change. | |
3076 | */ | |
d62a17ae | 3077 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3078 | { |
d62a17ae | 3079 | int ret; |
90e60aa7 | 3080 | |
d62a17ae | 3081 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3082 | * applicable | |
3083 | * for this VNI. | |
3084 | */ | |
3085 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3086 | 0); | |
3087 | if (ret) | |
3088 | return ret; | |
90e60aa7 | 3089 | |
d62a17ae | 3090 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3091 | 0); | |
90e60aa7 | 3092 | } |
3093 | ||
50f74cf1 | 3094 | /* Install or unistall route in ES */ |
3095 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3096 | afi_t afi, safi_t safi, | |
3097 | struct prefix_evpn *evp, | |
3098 | struct bgp_info *ri, | |
3099 | int install) | |
3100 | { | |
3101 | int ret = 0; | |
3102 | char buf[ESI_STR_LEN]; | |
3103 | ||
3104 | if (install) | |
3105 | ret = install_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3106 | else | |
3107 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3108 | ||
3109 | if (ret) { | |
af4c2728 | 3110 | flog_err( |
14454c9f DS |
3111 | BGP_ERR_EVPN_FAIL, |
3112 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, | |
3113 | install ? "install" : "uninstall", "ES", | |
3114 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3115 | return ret; |
3116 | } | |
3117 | return 0; | |
3118 | } | |
3119 | ||
d3135ba3 | 3120 | /* |
3121 | * Install or uninstall route in matching VRFs (list). | |
3122 | */ | |
3123 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3124 | safi_t safi, struct prefix_evpn *evp, | |
3125 | struct bgp_info *ri, | |
3126 | struct list *vrfs, int install) | |
3127 | { | |
3128 | char buf[PREFIX2STR_BUFFER]; | |
3129 | struct bgp *bgp_vrf; | |
3130 | struct listnode *node, *nnode; | |
3131 | ||
90264d64 | 3132 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3133 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3134 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3135 | return 0; |
3136 | ||
90264d64 | 3137 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3138 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3139 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3140 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3141 | return 0; |
3142 | ||
d3135ba3 | 3143 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3144 | int ret; | |
3145 | ||
3146 | if (install) | |
996c9314 | 3147 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 3148 | else |
996c9314 LB |
3149 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3150 | ri); | |
d3135ba3 | 3151 | |
3152 | if (ret) { | |
af4c2728 | 3153 | flog_err(BGP_ERR_EVPN_FAIL, |
14454c9f DS |
3154 | "%u: Failed to %s prefix %s in VRF %s", |
3155 | bgp_def->vrf_id, | |
3156 | install ? "install" : "uninstall", | |
3157 | prefix2str(evp, buf, sizeof(buf)), | |
3158 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3159 | return ret; |
3160 | } | |
3161 | } | |
3162 | ||
3163 | return 0; | |
3164 | } | |
3165 | ||
128ea8ab | 3166 | /* |
3167 | * Install or uninstall route in matching VNIs (list). | |
3168 | */ | |
d62a17ae | 3169 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3170 | safi_t safi, struct prefix_evpn *evp, | |
3171 | struct bgp_info *ri, | |
3172 | struct list *vnis, int install) | |
128ea8ab | 3173 | { |
d62a17ae | 3174 | struct bgpevpn *vpn; |
3175 | struct listnode *node, *nnode; | |
128ea8ab | 3176 | |
d62a17ae | 3177 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3178 | int ret; | |
128ea8ab | 3179 | |
d62a17ae | 3180 | if (!is_vni_live(vpn)) |
3181 | continue; | |
128ea8ab | 3182 | |
d62a17ae | 3183 | if (install) |
3184 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
3185 | else | |
3186 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 3187 | |
d62a17ae | 3188 | if (ret) { |
af4c2728 | 3189 | flog_err( |
14454c9f DS |
3190 | BGP_ERR_EVPN_FAIL, |
3191 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3192 | bgp->vrf_id, install ? "install" : "uninstall", | |
3193 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3194 | ? "MACIP" | |
3195 | : "IMET", | |
3196 | vpn->vni); | |
d62a17ae | 3197 | return ret; |
3198 | } | |
3199 | } | |
128ea8ab | 3200 | |
d62a17ae | 3201 | return 0; |
128ea8ab | 3202 | } |
3203 | ||
3204 | /* | |
50f74cf1 | 3205 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3206 | */ |
d62a17ae | 3207 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3208 | struct prefix *p, struct bgp_info *ri, | |
3209 | int import) | |
3210 | { | |
3211 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3212 | struct attr *attr = ri->attr; | |
3213 | struct ecommunity *ecom; | |
3214 | int i; | |
3215 | ||
3216 | assert(attr); | |
3217 | ||
50f74cf1 | 3218 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3219 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3220 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3221 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3222 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3223 | return 0; |
3224 | ||
3225 | /* If we don't have Route Target, nothing much to do. */ | |
3226 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3227 | return 0; | |
3228 | ||
3229 | ecom = attr->ecommunity; | |
3230 | if (!ecom || !ecom->size) | |
3231 | return -1; | |
3232 | ||
50f74cf1 | 3233 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3234 | * attached to the route */ | |
d62a17ae | 3235 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3236 | uint8_t *pnt; |
3237 | uint8_t type, sub_type; | |
d62a17ae | 3238 | struct ecommunity_val *eval; |
3239 | struct ecommunity_val eval_tmp; | |
996c9314 | 3240 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3241 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3242 | struct evpnes *es; |
d62a17ae | 3243 | |
3244 | /* Only deal with RTs */ | |
3245 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3246 | eval = (struct ecommunity_val *)(ecom->val | |
3247 | + (i * ECOMMUNITY_SIZE)); | |
3248 | type = *pnt++; | |
3249 | sub_type = *pnt++; | |
3250 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3251 | continue; | |
3252 | ||
50f74cf1 | 3253 | /* |
3254 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3255 | * IMET route is imported into VNI table. | |
3256 | * prefix routes are imported into VRF table. | |
523cafc4 | 3257 | */ |
50f74cf1 | 3258 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3259 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3260 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3261 | |
50f74cf1 | 3262 | irt = lookup_import_rt(bgp, eval); |
3263 | if (irt) | |
3264 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3265 | evp, ri, | |
3266 | irt->vnis, | |
3267 | import); | |
3268 | ||
3269 | vrf_irt = lookup_vrf_import_rt(eval); | |
3270 | if (vrf_irt) | |
3271 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3272 | evp, ri, | |
3273 | vrf_irt->vrfs, | |
3274 | import); | |
3275 | ||
3276 | /* Also check for non-exact match. | |
3277 | * In this, we mask out the AS and | |
3278 | * only check on the local-admin sub-field. | |
3279 | * This is to facilitate using | |
3280 | * VNI as the RT for EBGP peering too. | |
3281 | */ | |
3282 | irt = NULL; | |
3283 | vrf_irt = NULL; | |
3284 | if (type == ECOMMUNITY_ENCODE_AS | |
3285 | || type == ECOMMUNITY_ENCODE_AS4 | |
3286 | || type == ECOMMUNITY_ENCODE_IP) { | |
3287 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3288 | mask_ecom_global_admin(&eval_tmp, eval); | |
3289 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3290 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3291 | } | |
3292 | ||
3293 | if (irt) | |
3294 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3295 | evp, ri, | |
3296 | irt->vnis, | |
3297 | import); | |
3298 | if (vrf_irt) | |
3299 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3300 | evp, ri, | |
3301 | vrf_irt->vrfs, | |
3302 | import); | |
3303 | } | |
3304 | ||
3305 | /* es route is imported into the es table */ | |
3306 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3307 | ||
3308 | /* we will match based on the entire esi to avoid | |
3309 | * imoort of an es route for esi2 into esi1 | |
3310 | */ | |
3311 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3312 | if (es && is_es_local(es)) | |
3313 | install_uninstall_route_in_es(bgp, es, | |
3314 | afi, safi, | |
3315 | evp, ri, import); | |
d62a17ae | 3316 | } |
d62a17ae | 3317 | } |
3318 | ||
3319 | return 0; | |
128ea8ab | 3320 | } |
3321 | ||
2bb9eff4 DS |
3322 | /* |
3323 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3324 | * routes | |
3325 | */ | |
80b140af MK |
3326 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3327 | { | |
3328 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3329 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3330 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3331 | |
3332 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3333 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3334 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3335 | } |
3336 | ||
2bb9eff4 DS |
3337 | /* |
3338 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3339 | * routes | |
3340 | */ | |
80b140af MK |
3341 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3342 | { | |
3343 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3344 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3345 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3346 | |
3347 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3348 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3349 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3350 | } |
3351 | ||
676f83b9 | 3352 | /* |
3353 | * update and advertise local routes for a VRF as type-5 routes. | |
3354 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3355 | * done in the global route table using the routes which already exist in the | |
3356 | * VRF routing table | |
3357 | */ | |
80b140af | 3358 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3359 | { |
80b140af MK |
3360 | /* skip if the RD is configured */ |
3361 | if (is_vrf_rd_configured(bgp_vrf)) | |
3362 | return; | |
3363 | ||
3364 | /* derive the RD for the VRF based on new router-id */ | |
3365 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3366 | ||
3367 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3368 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3369 | } |
3370 | ||
3371 | /* | |
3372 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3373 | * This is invoked upon VRF RD change. The processing is done only from global | |
3374 | * table. | |
3375 | */ | |
80b140af | 3376 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3377 | { |
80b140af MK |
3378 | /* skip if the RD is configured */ |
3379 | if (is_vrf_rd_configured(bgp_vrf)) | |
3380 | return; | |
3381 | ||
3382 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3383 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3384 | } |
3385 | ||
90e60aa7 | 3386 | /* |
3387 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3388 | * change. Note that the processing is done only on the global route table | |
3389 | * using routes that already exist in the per-VNI table. | |
3390 | */ | |
d62a17ae | 3391 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3392 | { | |
3393 | struct prefix_evpn p; | |
3394 | struct bgp_node *rn, *global_rn; | |
3395 | struct bgp_info *ri, *global_ri; | |
3396 | struct attr *attr; | |
3397 | afi_t afi = AFI_L2VPN; | |
3398 | safi_t safi = SAFI_EVPN; | |
3399 | ||
3400 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3401 | * attributes to create and advertise the type-3 route for this VNI | |
3402 | * in the global table. | |
3403 | */ | |
3404 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3405 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3406 | if (!rn) /* unexpected */ | |
3407 | return 0; | |
3408 | for (ri = rn->info; ri; ri = ri->next) | |
3409 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
3410 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3411 | break; | |
3412 | if (!ri) /* unexpected */ | |
3413 | return 0; | |
3414 | attr = ri->attr; | |
3415 | ||
3416 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3417 | (struct prefix *)&p, &vpn->prd); | |
f07e1c99 | 3418 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, &ri, |
3419 | 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3420 | |
3421 | /* Schedule for processing and unlock node. */ | |
3422 | bgp_process(bgp, global_rn, afi, safi); | |
3423 | bgp_unlock_node(global_rn); | |
3424 | ||
3425 | /* Now, walk this VNI's route table and use the route and its attribute | |
3426 | * to create and schedule route in global table. | |
3427 | */ | |
3428 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3429 | rn = bgp_route_next(rn)) { | |
3430 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3431 | ||
3432 | /* Identify MAC-IP local routes. */ | |
3433 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3434 | continue; | |
3435 | ||
3436 | for (ri = rn->info; ri; ri = ri->next) | |
3437 | if (ri->peer == bgp->peer_self | |
3438 | && ri->type == ZEBRA_ROUTE_BGP | |
3439 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3440 | break; | |
3441 | if (!ri) | |
3442 | continue; | |
3443 | ||
3444 | /* Create route in global routing table using this route entry's | |
3445 | * attribute. | |
3446 | */ | |
3447 | attr = ri->attr; | |
3448 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3449 | (struct prefix *)evp, &vpn->prd); | |
3450 | assert(global_rn); | |
3451 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
f07e1c99 | 3452 | &global_ri, 0, |
3453 | mac_mobility_seqnum(attr)); | |
d62a17ae | 3454 | |
3455 | /* Schedule for processing and unlock node. */ | |
3456 | bgp_process(bgp, global_rn, afi, safi); | |
3457 | bgp_unlock_node(global_rn); | |
3458 | } | |
3459 | ||
3460 | return 0; | |
90e60aa7 | 3461 | } |
3462 | ||
3463 | /* | |
3464 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3465 | * table. Invoked upon router-id change. | |
3466 | */ | |
d62a17ae | 3467 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3468 | { |
d62a17ae | 3469 | int ret; |
3470 | struct prefix_evpn p; | |
3471 | struct bgp_node *global_rn; | |
3472 | struct bgp_info *ri; | |
3473 | afi_t afi = AFI_L2VPN; | |
3474 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3475 | |
d62a17ae | 3476 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3477 | * for this VNI - from the global table. | |
3478 | */ | |
3479 | ret = delete_global_type2_routes(bgp, vpn); | |
3480 | if (ret) | |
3481 | return ret; | |
90e60aa7 | 3482 | |
d62a17ae | 3483 | /* Remove type-3 route for this VNI from global table. */ |
3484 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3485 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3486 | (struct prefix *)&p, &vpn->prd); | |
3487 | if (global_rn) { | |
3488 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 3489 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
90e60aa7 | 3490 | |
d62a17ae | 3491 | /* Schedule for processing - withdraws to peers happen from |
3492 | * this table. | |
3493 | */ | |
3494 | if (ri) | |
3495 | bgp_process(bgp, global_rn, afi, safi); | |
3496 | bgp_unlock_node(global_rn); | |
3497 | } | |
90e60aa7 | 3498 | |
d62a17ae | 3499 | return 0; |
90e60aa7 | 3500 | } |
3501 | ||
2d48ee25 | 3502 | /* |
3503 | * Handle router-id change. Update and advertise local routes corresponding | |
3504 | * to this VNI from peers. Note that this is invoked after updating the | |
3505 | * router-id. The routes in the per-VNI table are used to create routes in | |
3506 | * the global table and schedule them. | |
3507 | */ | |
d62a17ae | 3508 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3509 | { |
0a1a07cb | 3510 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3511 | |
d62a17ae | 3512 | /* Skip VNIs with configured RD. */ |
3513 | if (is_rd_configured(vpn)) | |
3514 | return; | |
2d48ee25 | 3515 | |
d62a17ae | 3516 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3517 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3518 | } |
3519 | ||
3520 | /* | |
3521 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3522 | * to this VNI from peers. Note that this is invoked prior to updating | |
3523 | * the router-id and is done only on the global route table, the routes | |
3524 | * are needed in the per-VNI table to re-advertise with new router id. | |
3525 | */ | |
d62a17ae | 3526 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3527 | { |
0a1a07cb | 3528 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3529 | |
d62a17ae | 3530 | /* Skip VNIs with configured RD. */ |
3531 | if (is_rd_configured(vpn)) | |
3532 | return; | |
2d48ee25 | 3533 | |
d62a17ae | 3534 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3535 | } |
3536 | ||
128ea8ab | 3537 | /* |
3538 | * Process received EVPN type-2 route (advertise or withdraw). | |
3539 | */ | |
d62a17ae | 3540 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3541 | struct attr *attr, uint8_t *pfx, int psize, |
3542 | uint32_t addpath_id) | |
d62a17ae | 3543 | { |
3544 | struct prefix_rd prd; | |
3545 | struct prefix_evpn p; | |
554cd77a | 3546 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3547 | uint8_t ipaddr_len; |
3548 | uint8_t macaddr_len; | |
b57ba6d2 | 3549 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3550 | uint32_t num_labels = 0; |
554cd77a | 3551 | uint32_t eth_tag; |
d62a17ae | 3552 | int ret; |
3553 | ||
3554 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3555 | * additional 3 bytes if there is a second label (VNI): | |
3556 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3557 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3558 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3559 | */ | |
3560 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3561 | && psize != 40 && psize != 52) { | |
af4c2728 | 3562 | flog_err(BGP_ERR_EVPN_ROUTE_INVALID, |
14454c9f DS |
3563 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3564 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3565 | return -1; |
3566 | } | |
3567 | ||
554cd77a VB |
3568 | memset(&evpn, 0, sizeof(evpn)); |
3569 | ||
d62a17ae | 3570 | /* Make prefix_rd */ |
3571 | prd.family = AF_UNSPEC; | |
3572 | prd.prefixlen = 64; | |
3573 | memcpy(&prd.val, pfx, 8); | |
3574 | pfx += 8; | |
3575 | ||
3576 | /* Make EVPN prefix. */ | |
3577 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3578 | p.family = AF_EVPN; |
50f74cf1 | 3579 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3580 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3581 | ||
554cd77a VB |
3582 | /* Copy Ethernet Seg Identifier */ |
3583 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3584 | pfx += ESI_LEN; | |
d62a17ae | 3585 | |
554cd77a VB |
3586 | /* Copy Ethernet Tag */ |
3587 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3588 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3589 | pfx += 4; |
3590 | ||
3591 | /* Get the MAC Addr len */ | |
3592 | macaddr_len = *pfx++; | |
3593 | ||
3594 | /* Get the MAC Addr */ | |
28328ea9 | 3595 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3596 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3597 | pfx += ETH_ALEN; |
d62a17ae | 3598 | } else { |
af4c2728 | 3599 | flog_err( |
14454c9f | 3600 | BGP_ERR_EVPN_ROUTE_INVALID, |
d62a17ae | 3601 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3602 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3603 | return -1; | |
3604 | } | |
3605 | ||
3606 | ||
3607 | /* Get the IP. */ | |
3608 | ipaddr_len = *pfx++; | |
3609 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3610 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3611 | flog_err( |
14454c9f | 3612 | BGP_ERR_EVPN_ROUTE_INVALID, |
d62a17ae | 3613 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3614 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3615 | return -1; | |
3616 | } | |
3617 | ||
3618 | if (ipaddr_len) { | |
3619 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3620 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3621 | ? IPADDR_V4 |
3622 | : IPADDR_V6; | |
3714a385 | 3623 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3624 | } |
3625 | pfx += ipaddr_len; | |
3626 | ||
b57ba6d2 MK |
3627 | /* Get the VNI(s). Stored as bytes here. */ |
3628 | num_labels++; | |
3629 | memset(label, 0, sizeof(label)); | |
3630 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3631 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3632 | psize -= (33 + ipaddr_len); |
3633 | /* Do we have a second VNI? */ | |
3634 | if (psize) { | |
3635 | num_labels++; | |
3636 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3637 | /* |
3638 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3639 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3640 | * the next field | |
6b11bd8d | 3641 | */ |
b57ba6d2 | 3642 | } |
d62a17ae | 3643 | |
3644 | /* Process the route. */ | |
3645 | if (attr) | |
3646 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3647 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3648 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3649 | else |
3650 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3651 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3652 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3653 | return ret; |
128ea8ab | 3654 | } |
3655 | ||
3656 | /* | |
3657 | * Process received EVPN type-3 route (advertise or withdraw). | |
3658 | */ | |
d62a17ae | 3659 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3660 | struct attr *attr, uint8_t *pfx, int psize, |
3661 | uint32_t addpath_id) | |
d62a17ae | 3662 | { |
3663 | struct prefix_rd prd; | |
3664 | struct prefix_evpn p; | |
d7c0a89a | 3665 | uint8_t ipaddr_len; |
554cd77a | 3666 | uint32_t eth_tag; |
d62a17ae | 3667 | int ret; |
3668 | ||
3669 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3670 | * IP len (1) and IP (4 or 16). | |
3671 | */ | |
3672 | if (psize != 17 && psize != 29) { | |
af4c2728 | 3673 | flog_err(BGP_ERR_EVPN_ROUTE_INVALID, |
14454c9f DS |
3674 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3675 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3676 | return -1; |
3677 | } | |
3678 | ||
7fd077aa | 3679 | /* If PMSI is present, log if it is anything other than IR. |
3680 | * Note: We just simply ignore the values as it is not clear if | |
3681 | * doing anything else is better. | |
3682 | */ | |
3683 | if (attr && | |
3684 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3685 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
28642513 DS |
3686 | flog_warn(BGP_WARN_EVPN_PMSI_PRESENT, |
3687 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
7fd077aa | 3688 | peer->bgp->vrf_id, peer->host, |
3689 | attr->pmsi_tnl_type); | |
3690 | } | |
3691 | } | |
3692 | ||
d62a17ae | 3693 | /* Make prefix_rd */ |
3694 | prd.family = AF_UNSPEC; | |
3695 | prd.prefixlen = 64; | |
3696 | memcpy(&prd.val, pfx, 8); | |
3697 | pfx += 8; | |
3698 | ||
3699 | /* Make EVPN prefix. */ | |
3700 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3701 | p.family = AF_EVPN; |
50f74cf1 | 3702 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3703 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3704 | ||
554cd77a VB |
3705 | /* Copy Ethernet Tag */ |
3706 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3707 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3708 | pfx += 4; |
3709 | ||
3710 | /* Get the IP. */ | |
3711 | ipaddr_len = *pfx++; | |
3712 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3713 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3714 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3715 | } else { |
af4c2728 | 3716 | flog_err( |
14454c9f | 3717 | BGP_ERR_EVPN_ROUTE_INVALID, |
d62a17ae | 3718 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3719 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3720 | return -1; | |
3721 | } | |
3722 | ||
3723 | /* Process the route. */ | |
3724 | if (attr) | |
3725 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3726 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3727 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3728 | else |
3729 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3730 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3731 | &prd, NULL, 0, NULL); |
d62a17ae | 3732 | return ret; |
128ea8ab | 3733 | } |
3734 | ||
50f74cf1 | 3735 | /* |
3736 | * Process received EVPN type-4 route (advertise or withdraw). | |
3737 | */ | |
3738 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3739 | struct attr *attr, uint8_t *pfx, int psize, | |
3740 | uint32_t addpath_id) | |
3741 | { | |
3742 | int ret; | |
3743 | esi_t esi; | |
3744 | uint8_t ipaddr_len; | |
3745 | struct in_addr vtep_ip; | |
3746 | struct prefix_rd prd; | |
3747 | struct prefix_evpn p; | |
3748 | ||
3749 | /* Type-4 route should be either 23 or 35 bytes | |
3750 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3751 | */ | |
3752 | if (psize != 23 && psize != 35) { | |
af4c2728 | 3753 | flog_err(BGP_ERR_EVPN_ROUTE_INVALID, |
14454c9f DS |
3754 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3755 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3756 | return -1; |
3757 | } | |
3758 | ||
3759 | /* Make prefix_rd */ | |
3760 | prd.family = AF_UNSPEC; | |
3761 | prd.prefixlen = 64; | |
3762 | memcpy(&prd.val, pfx, 8); | |
3763 | pfx += 8; | |
3764 | ||
3765 | /* get the ESI */ | |
3766 | memcpy(&esi, pfx, ESI_BYTES); | |
3767 | pfx += ESI_BYTES; | |
3768 | ||
3769 | ||
3770 | /* Get the IP. */ | |
3771 | ipaddr_len = *pfx++; | |
3772 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3773 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3774 | } else { | |
af4c2728 | 3775 | flog_err( |
14454c9f | 3776 | BGP_ERR_EVPN_ROUTE_INVALID, |
50f74cf1 | 3777 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3778 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3779 | return -1; | |
3780 | } | |
3781 | ||
3782 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3783 | /* Process the route. */ | |
3784 | if (attr) { | |
3785 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3786 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3787 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3788 | } else { |
50f74cf1 | 3789 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3790 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3791 | &prd, NULL, 0, NULL); | |
3792 | } | |
3793 | return ret; | |
3794 | } | |
3795 | ||
3796 | ||
128ea8ab | 3797 | /* |
3798 | * Process received EVPN type-5 route (advertise or withdraw). | |
3799 | */ | |
d62a17ae | 3800 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3801 | struct attr *attr, uint8_t *pfx, int psize, |
3802 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3803 | { |
3804 | struct prefix_rd prd; | |
3805 | struct prefix_evpn p; | |
3806 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3807 | uint8_t ippfx_len; |
3808 | uint32_t eth_tag; | |
b57ba6d2 | 3809 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3810 | int ret; |
3811 | ||
3812 | /* Type-5 route should be 34 or 58 bytes: | |
3813 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3814 | * GW (4 or 16) and VNI (3). | |
3815 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3816 | */ | |
3817 | if (psize != 34 && psize != 58) { | |
af4c2728 | 3818 | flog_err(BGP_ERR_EVPN_ROUTE_INVALID, |
14454c9f DS |
3819 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3820 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3821 | return -1; |
3822 | } | |
3823 | ||
3824 | /* Make prefix_rd */ | |
3825 | prd.family = AF_UNSPEC; | |
3826 | prd.prefixlen = 64; | |
3827 | memcpy(&prd.val, pfx, 8); | |
3828 | pfx += 8; | |
3829 | ||
3830 | /* Make EVPN prefix. */ | |
3831 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3832 | p.family = AF_EVPN; |
50f74cf1 | 3833 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3834 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3835 | ||
3836 | /* Additional information outside of prefix - ESI and GW IP */ | |
3837 | memset(&evpn, 0, sizeof(evpn)); | |
3838 | ||
3839 | /* Fetch ESI */ | |
3840 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3841 | pfx += 10; | |
3842 | ||
3843 | /* Fetch Ethernet Tag. */ | |
3844 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3845 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3846 | pfx += 4; |
3847 | ||
3848 | /* Fetch IP prefix length. */ | |
3849 | ippfx_len = *pfx++; | |
3850 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3851 | flog_err( |
14454c9f | 3852 | BGP_ERR_EVPN_ROUTE_INVALID, |
d62a17ae | 3853 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3854 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3855 | return -1; | |
3856 | } | |
3714a385 | 3857 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3858 | |
3859 | /* Determine IPv4 or IPv6 prefix */ | |
3860 | /* Since the address and GW are from the same family, this just becomes | |
3861 | * a simple check on the total size. | |
3862 | */ | |
3863 | if (psize == 34) { | |
3714a385 | 3864 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3865 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3866 | pfx += 4; |
3867 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3868 | pfx += 4; | |
d62a17ae | 3869 | } else { |
3714a385 | 3870 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3871 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3872 | pfx += 16; |
3873 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3874 | pfx += 16; | |
d62a17ae | 3875 | } |
3876 | ||
b57ba6d2 MK |
3877 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3878 | memset(&label, 0, sizeof(label)); | |
3879 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3880 | |
3881 | /* | |
3882 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3883 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3884 | * field | |
6b11bd8d | 3885 | */ |
d62a17ae | 3886 | |
3887 | /* Process the route. */ | |
3888 | if (!withdraw) | |
3889 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3890 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3891 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3892 | else |
3893 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3894 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3895 | &prd, &label, 1, &evpn); |
d62a17ae | 3896 | |
3897 | return ret; | |
3898 | } | |
3899 | ||
3900 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3901 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3902 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3903 | { |
3904 | int len; | |
3905 | char temp[16]; | |
3906 | struct evpn_addr *p_evpn_p; | |
3907 | ||
3908 | memset(&temp, 0, 16); | |
b03b8898 | 3909 | if (p->family != AF_EVPN) |
d62a17ae | 3910 | return; |
3911 | p_evpn_p = &(p->u.prefix_evpn); | |
3912 | ||
e9fc2840 | 3913 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3914 | IP and GW-IP have to be both ipv4 or ipv6 |
3915 | */ | |
3714a385 | 3916 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3917 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3918 | else |
e9fc2840 | 3919 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3920 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3921 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3922 | stream_put(s, prd->val, 8); | |
0af35d90 | 3923 | if (attr) |
d62a17ae | 3924 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3925 | else | |
3926 | stream_put(s, &temp, 10); | |
3714a385 | 3927 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3928 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3929 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3930 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3931 | else |
3714a385 | 3932 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3933 | if (attr) { |
3714a385 | 3934 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3935 | stream_put_ipv4(s, |
3936 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3937 | else | |
3938 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3939 | } else { | |
3714a385 | 3940 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3941 | stream_put_ipv4(s, 0); |
3942 | else | |
3943 | stream_put(s, &temp, 16); | |
3944 | } | |
3945 | ||
b57ba6d2 | 3946 | if (num_labels) |
d62a17ae | 3947 | stream_put(s, label, 3); |
3948 | else | |
3949 | stream_put3(s, 0); | |
128ea8ab | 3950 | } |
3951 | ||
3952 | /* | |
3953 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3954 | */ | |
d62a17ae | 3955 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3956 | { |
d62a17ae | 3957 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3958 | |
d62a17ae | 3959 | /* Remove EVPN routes and schedule for processing. */ |
3960 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3961 | |
d62a17ae | 3962 | /* Clear "live" flag and see if hash needs to be freed. */ |
3963 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3964 | if (!is_vni_configured(vpn)) | |
3965 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3966 | } |
3967 | ||
3968 | /* | |
3969 | * Free a VNI entry; iterator function called during cleanup. | |
3970 | */ | |
d62a17ae | 3971 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3972 | { |
0a1a07cb | 3973 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3974 | |
d62a17ae | 3975 | delete_all_vni_routes(bgp, vpn); |
3976 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3977 | } |
3978 | ||
c581d8b0 MK |
3979 | /* |
3980 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3981 | */ | |
3982 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3983 | { | |
10ebe1ab MK |
3984 | struct bgp *bgp_def = NULL; |
3985 | ||
c581d8b0 | 3986 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3987 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3988 | ||
3989 | /* Map RT to VRF */ | |
3990 | bgp_def = bgp_get_default(); | |
3991 | if (!bgp_def) | |
3992 | return; | |
3993 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3994 | } |
3995 | ||
3996 | /* | |
3997 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3998 | */ | |
3999 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4000 | { | |
4001 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4002 | } | |
4003 | ||
4004 | /* | |
4005 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4006 | */ | |
4007 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4008 | { | |
4009 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4010 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4011 | } | |
4012 | ||
4013 | /* | |
4014 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4015 | */ | |
4016 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4017 | { | |
4018 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4019 | } | |
128ea8ab | 4020 | |
f1f8b53c MK |
4021 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4022 | { | |
4023 | struct bgp *bgp_def = NULL; | |
4024 | struct listnode *node = NULL; | |
4025 | struct bgpevpn *vpn = NULL; | |
4026 | ||
4027 | bgp_def = bgp_get_default(); | |
4028 | if (!bgp_def) | |
4029 | return; | |
4030 | ||
4992b4ae MK |
4031 | /* update all type-5 routes */ |
4032 | update_advertise_vrf_routes(bgp_vrf); | |
4033 | ||
4034 | /* update all type-2 routes */ | |
f1f8b53c MK |
4035 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4036 | update_routes_for_vni(bgp_def, vpn); | |
4037 | } | |
4038 | ||
bf1061d8 VB |
4039 | /* |
4040 | * Handle autort change for a given VNI. | |
4041 | */ | |
4042 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4043 | { | |
4044 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 | 4045 | |
bf1061d8 VB |
4046 | if (!is_import_rt_configured(vpn)) { |
4047 | if (is_vni_live(vpn)) | |
4048 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4049 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4050 | list_delete_all_node(vpn->import_rtl); |
4051 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4052 | if (is_vni_live(vpn)) | |
4053 | bgp_evpn_install_routes(bgp, vpn); | |
4054 | } | |
4055 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4056 | list_delete_all_node(vpn->export_rtl); |
4057 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4058 | if (is_vni_live(vpn)) | |
4059 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4060 | } | |
4061 | } | |
4062 | ||
128ea8ab | 4063 | /* |
4064 | * Public functions. | |
4065 | */ | |
4066 | ||
5424b7ba | 4067 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4068 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4069 | afi_t afi, safi_t safi) |
4070 | { | |
4071 | int ret = 0; | |
4072 | struct prefix_evpn evp; | |
4073 | char buf[PREFIX_STRLEN]; | |
4074 | ||
31310b25 | 4075 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4076 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4077 | if (ret) { | |
af4c2728 | 4078 | flog_err( |
14454c9f | 4079 | BGP_ERR_EVPN_ROUTE_DELETE, |
996c9314 LB |
4080 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4081 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4082 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4083 | } |
4084 | } | |
4085 | ||
342dd0c6 | 4086 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4087 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4088 | { |
4089 | struct bgp_table *table = NULL; | |
4090 | struct bgp_node *rn = NULL; | |
25f2ca53 | 4091 | struct bgp_info *ri; |
342dd0c6 | 4092 | |
053905d2 | 4093 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4094 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4095 | /* Only care about "selected" routes - non-imported. */ | |
4096 | /* TODO: Support for AddPath for EVPN. */ | |
4097 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4098 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4099 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 4100 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4101 | afi, safi); | |
4102 | break; | |
4103 | } | |
4104 | } | |
4105 | } | |
5424b7ba | 4106 | } |
342dd0c6 | 4107 | |
2f69f6d3 | 4108 | /* |
4109 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4110 | * to this function correspond to those of the source IP prefix (best | |
4111 | * path in the case of the attr. In the case of a local prefix (when we | |
4112 | * are advertising local subnets), the src_attr will be NULL. | |
4113 | */ | |
31310b25 | 4114 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4115 | struct attr *src_attr, afi_t afi, |
4116 | safi_t safi) | |
5424b7ba MK |
4117 | { |
4118 | int ret = 0; | |
4119 | struct prefix_evpn evp; | |
4120 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4121 | |
31310b25 | 4122 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4123 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4124 | if (ret) | |
af4c2728 | 4125 | flog_err(BGP_ERR_EVPN_ROUTE_CREATE, |
14454c9f DS |
4126 | "%u: Failed to create type-5 route for prefix %s", |
4127 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4128 | } |
4129 | ||
2f69f6d3 | 4130 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4131 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4132 | * advertisement is enabled. | |
4133 | */ | |
996c9314 LB |
4134 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4135 | safi_t safi) | |
342dd0c6 | 4136 | { |
4137 | struct bgp_table *table = NULL; | |
4138 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 4139 | struct bgp_info *ri; |
342dd0c6 | 4140 | |
053905d2 | 4141 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4142 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4143 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4144 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4145 | * TODO: Support for AddPath for EVPN. |
4146 | */ | |
4147 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4148 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4149 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
4150 | |
4151 | /* apply the route-map */ | |
4152 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4153 | int ret = 0; | |
4154 | ||
996c9314 LB |
4155 | ret = route_map_apply( |
4156 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4157 | .map, | |
4158 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
4159 | if (ret == RMAP_DENYMATCH) |
4160 | continue; | |
4161 | } | |
996c9314 LB |
4162 | bgp_evpn_advertise_type5_route( |
4163 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 4164 | break; |
4165 | } | |
4166 | } | |
31310b25 | 4167 | } |
342dd0c6 | 4168 | } |
4169 | ||
996c9314 | 4170 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4171 | { |
4172 | struct listnode *node, *nnode, *node_to_del; | |
4173 | struct ecommunity *ecom, *ecom_auto; | |
4174 | struct ecommunity_val eval; | |
4175 | ||
bf1061d8 VB |
4176 | if (bgp->advertise_autort_rfc8365) |
4177 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4178 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4179 | ||
4180 | ecom_auto = ecommunity_new(); | |
4181 | ecommunity_add_val(ecom_auto, &eval); | |
4182 | node_to_del = NULL; | |
4183 | ||
4184 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4185 | if (ecommunity_match(ecom, ecom_auto)) { | |
4186 | ecommunity_free(&ecom); | |
4187 | node_to_del = node; | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | if (node_to_del) | |
4192 | list_delete_node(rtl, node_to_del); | |
4193 | ||
4194 | ecommunity_free(&ecom_auto); | |
4195 | } | |
4196 | ||
4197 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4198 | struct ecommunity *ecomadd) |
c581d8b0 | 4199 | { |
5ba238b7 MK |
4200 | /* uninstall routes from vrf */ |
4201 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4202 | |
4203 | /* Cleanup the RT to VRF mapping */ | |
4204 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4205 | ||
c581d8b0 MK |
4206 | /* Remove auto generated RT */ |
4207 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4208 | ||
4209 | /* Add the newly configured RT to RT list */ | |
4210 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4211 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4212 | ||
10ebe1ab MK |
4213 | /* map VRF to its RTs */ |
4214 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4215 | ||
5ba238b7 MK |
4216 | /* install routes matching the new VRF */ |
4217 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4218 | } |
4219 | ||
4220 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4221 | struct ecommunity *ecomdel) | |
4222 | { | |
4223 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4224 | struct ecommunity *ecom = NULL; | |
4225 | ||
5ba238b7 MK |
4226 | /* uninstall routes from vrf */ |
4227 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4228 | |
4229 | /* Cleanup the RT to VRF mapping */ | |
4230 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4231 | ||
c581d8b0 MK |
4232 | /* remove the RT from the RT list */ |
4233 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4234 | if (ecommunity_match(ecom, ecomdel)) { | |
4235 | ecommunity_free(&ecom); | |
4236 | node_to_del = node; | |
4237 | break; | |
4238 | } | |
4239 | } | |
4240 | ||
4241 | if (node_to_del) | |
4242 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4243 | ||
b3a4db3d | 4244 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4245 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4246 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4247 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4248 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4249 | } | |
4250 | ||
10ebe1ab MK |
4251 | /* map VRFs to its RTs */ |
4252 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4253 | ||
5ba238b7 MK |
4254 | /* install routes matching this new RT */ |
4255 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4256 | } |
4257 | ||
4258 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4259 | struct ecommunity *ecomadd) | |
4260 | { | |
4261 | /* remove auto-generated RT */ | |
4262 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4263 | ||
4264 | /* Add the new RT to the RT list */ | |
4265 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4266 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4267 | ||
f1f8b53c | 4268 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4269 | } |
4270 | ||
4271 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4272 | struct ecommunity *ecomdel) | |
4273 | { | |
4274 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4275 | struct ecommunity *ecom = NULL; | |
4276 | ||
4277 | /* Remove the RT from the RT list */ | |
4278 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4279 | if (ecommunity_match(ecom, ecomdel)) { | |
4280 | ecommunity_free(&ecom); | |
4281 | node_to_del = node; | |
4282 | break; | |
4283 | } | |
4284 | } | |
4285 | ||
4286 | if (node_to_del) | |
4287 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4288 | ||
1525e99f DS |
4289 | /* |
4290 | * Temporary assert to make SA happy. | |
4291 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4292 | * which means that SA is going to complain about | |
4293 | * the list_isempty call, which doesn't NULL check. | |
4294 | * So until we get this situation cleaned up, here | |
4295 | * we are. | |
4296 | */ | |
4297 | assert(bgp_vrf->vrf_export_rtl); | |
4298 | ||
c581d8b0 | 4299 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4300 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4301 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4302 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4303 | } | |
4304 | ||
f1f8b53c | 4305 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4306 | } |
4307 | ||
2d48ee25 | 4308 | /* |
4309 | * Handle change to BGP router id. This is invoked twice by the change | |
4310 | * handler, first before the router id has been changed and then after | |
4311 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4312 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4313 | * will result in the routes being re-advertised. |
4314 | */ | |
d62a17ae | 4315 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4316 | { |
676f83b9 | 4317 | if (withdraw) { |
4318 | ||
4319 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4320 | stored in the global table for this vrf |
4321 | */ | |
80b140af | 4322 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4323 | |
4324 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4325 | * L2-VNIs |
4326 | */ | |
d62a17ae | 4327 | hash_iterate(bgp->vnihash, |
4328 | (void (*)(struct hash_backet *, | |
4329 | void *))withdraw_router_id_vni, | |
4330 | bgp); | |
676f83b9 | 4331 | } else { |
4332 | ||
4333 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4334 | * RD |
4335 | */ | |
80b140af | 4336 | update_router_id_vrf(bgp); |
676f83b9 | 4337 | |
4338 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4339 | * new RD |
4340 | */ | |
d62a17ae | 4341 | hash_iterate(bgp->vnihash, |
4342 | (void (*)(struct hash_backet *, | |
4343 | void *))update_router_id_vni, | |
4344 | bgp); | |
676f83b9 | 4345 | } |
2d48ee25 | 4346 | } |
4347 | ||
bf1061d8 VB |
4348 | /* |
4349 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4350 | */ | |
4351 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4352 | { | |
4353 | hash_iterate(bgp->vnihash, | |
4354 | (void (*)(struct hash_backet *, | |
4355 | void*))update_autort_vni, | |
4356 | bgp); | |
4357 | } | |
4358 | ||
90e60aa7 | 4359 | /* |
4360 | * Handle change to export RT - update and advertise local routes. | |
4361 | */ | |
d62a17ae | 4362 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4363 | { |
d62a17ae | 4364 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4365 | } |
4366 | ||
996c9314 | 4367 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4368 | { |
4369 | if (withdraw) | |
4370 | delete_withdraw_vrf_routes(bgp_vrf); | |
4371 | else | |
4372 | update_advertise_vrf_routes(bgp_vrf); | |
4373 | } | |
4374 | ||
90e60aa7 | 4375 | /* |
4376 | * Handle change to RD. This is invoked twice by the change handler, | |
4377 | * first before the RD has been changed and then after the RD has | |
4378 | * been changed. The first invocation will result in local routes | |
4379 | * of this VNI being deleted and withdrawn and the next will result | |
4380 | * in the routes being re-advertised. | |
4381 | */ | |
d62a17ae | 4382 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4383 | int withdraw) | |
90e60aa7 | 4384 | { |
d62a17ae | 4385 | if (withdraw) |
4386 | delete_withdraw_vni_routes(bgp, vpn); | |
4387 | else | |
4388 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4389 | } |
4390 | ||
4391 | /* | |
4392 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4393 | */ | |
d62a17ae | 4394 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4395 | { |
d62a17ae | 4396 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4397 | } |
4398 | ||
4399 | /* | |
4400 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4401 | * to Import RT. | |
4402 | */ | |
d62a17ae | 4403 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4404 | { |
d62a17ae | 4405 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4406 | } |
4407 | ||
b16031a2 | 4408 | /* |
b57ba6d2 | 4409 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4410 | */ |
d7c0a89a | 4411 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4412 | int len) |
b16031a2 | 4413 | { |
b57ba6d2 | 4414 | vni_t vni1, vni2; |
b16031a2 | 4415 | |
b57ba6d2 MK |
4416 | vni1 = label2vni(label); |
4417 | if (num_labels == 2) { | |
996c9314 | 4418 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4419 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4420 | } else | |
4421 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4422 | return buf; |
b16031a2 | 4423 | } |
4424 | ||
9c92b5f7 MK |
4425 | /* |
4426 | * Function to convert evpn route to json format. | |
4427 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4428 | */ | |
57f7feb6 | 4429 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4430 | { |
b682f6de | 4431 | char buf1[ETHER_ADDR_STRLEN]; |
4432 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4433 | |
b682f6de | 4434 | if (!json) |
4435 | return; | |
9c92b5f7 | 4436 | |
dff8f48d | 4437 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4438 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4439 | json_object_int_add(json, "ethTag", |
4440 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4441 | json_object_int_add(json, "ipLen", |
3714a385 | 4442 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4443 | ? IPV4_MAX_BITLEN |
4444 | : IPV6_MAX_BITLEN); | |
b682f6de | 4445 | json_object_string_add(json, "ip", |
3714a385 | 4446 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4447 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4448 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4449 | json_object_int_add(json, "routeType", |
4450 | p->prefix.route_type); | |
3714a385 | 4451 | json_object_int_add(json, "ethTag", |
4452 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4453 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4454 | json_object_string_add(json, "mac", | |
3714a385 | 4455 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4456 | buf1, |
4457 | sizeof(buf1))); | |
dff8f48d | 4458 | } else { |
d7c0a89a | 4459 | uint8_t family; |
dff8f48d | 4460 | |
3714a385 | 4461 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4462 | : AF_INET6; |
dff8f48d | 4463 | |
b682f6de | 4464 | json_object_int_add(json, "routeType", |
57f7feb6 | 4465 | p->prefix.route_type); |
3714a385 | 4466 | json_object_int_add(json, "ethTag", |
4467 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4468 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4469 | json_object_string_add(json, "mac", |
3714a385 | 4470 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4471 | buf1, |
4472 | sizeof(buf1))); | |
b682f6de | 4473 | json_object_int_add(json, "ipLen", |
3714a385 | 4474 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4475 | ? IPV4_MAX_BITLEN |
4476 | : IPV6_MAX_BITLEN); | |
4477 | json_object_string_add( | |
4478 | json, "ip", | |
3714a385 | 4479 | inet_ntop(family, |
4480 | &p->prefix.macip_addr.ip.ip.addr, | |
4481 | buf2, | |
57f7feb6 | 4482 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4483 | } |
4484 | } else { | |
4485 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4486 | } | |
9c92b5f7 MK |
4487 | } |
4488 | ||
520d5d76 | 4489 | /* |
4490 | * Function to convert evpn route to string. | |
4491 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4492 | */ | |
d62a17ae | 4493 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4494 | { | |
4495 | char buf1[ETHER_ADDR_STRLEN]; | |
4496 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4497 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4498 | |
4499 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4500 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4501 | p->prefix.imet_addr.eth_tag, |
4502 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4503 | : IPV6_MAX_BITLEN, |
3714a385 | 4504 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4505 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4506 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4507 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4508 | p->prefix.route_type, | |
3714a385 | 4509 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4510 | 8 * ETH_ALEN, |
3714a385 | 4511 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4512 | sizeof(buf1))); |
4513 | else { | |
d7c0a89a | 4514 | uint8_t family; |
d62a17ae | 4515 | |
3714a385 | 4516 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4517 | : AF_INET6; |
554cd77a VB |
4518 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4519 | p->prefix.route_type, | |
3714a385 | 4520 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4521 | 8 * ETH_ALEN, |
3714a385 | 4522 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4523 | sizeof(buf1)), |
4524 | family == AF_INET ? IPV4_MAX_BITLEN | |
4525 | : IPV6_MAX_BITLEN, | |
3714a385 | 4526 | inet_ntop(family, |
4527 | &p->prefix.macip_addr.ip.ip.addr, | |
4528 | buf2, | |
d62a17ae | 4529 | PREFIX2STR_BUFFER)); |
4530 | } | |
342dd0c6 | 4531 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4532 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4533 | p->prefix.route_type, | |
3714a385 | 4534 | p->prefix.prefix_addr.eth_tag, |
4535 | p->prefix.prefix_addr.ip_prefix_length, | |
4536 | is_evpn_prefix_ipaddr_v4(p) | |
4537 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4538 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4539 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4540 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4541 | p->prefix.route_type, | |
4542 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4543 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4544 | : IPV6_MAX_BITLEN, | |
4545 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4546 | } else { |
b03b8898 | 4547 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4548 | snprintf(buf, len, "(unsupported route type %d)", |
4549 | p->prefix.route_type); | |
d62a17ae | 4550 | } |
4551 | ||
4552 | return (buf); | |
520d5d76 | 4553 | } |
4554 | ||
128ea8ab | 4555 | /* |
4556 | * Encode EVPN prefix in Update (MP_REACH) | |
4557 | */ | |
d62a17ae | 4558 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4559 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4560 | uint32_t num_labels, struct attr *attr, |
4561 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4562 | { |
4563 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4564 | int len, ipa_len = 0; |
d62a17ae | 4565 | |
4566 | if (addpath_encode) | |
4567 | stream_putl(s, addpath_tx_id); | |
4568 | ||
4569 | /* Route type */ | |
4570 | stream_putc(s, evp->prefix.route_type); | |
4571 | ||
4572 | switch (evp->prefix.route_type) { | |
4573 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4574 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4575 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4576 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4577 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4578 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4579 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4580 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4581 | len += 3; | |
4582 | stream_putc(s, len); | |
996c9314 | 4583 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4584 | if (attr) |
4585 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4586 | else | |
4587 | stream_put(s, 0, 10); | |
3714a385 | 4588 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4589 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4590 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4591 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4592 | if (ipa_len) /* IP */ | |
4593 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4594 | ipa_len); | |
b57ba6d2 MK |
4595 | /* 1st label is the L2 VNI */ |
4596 | stream_put(s, label, BGP_LABEL_BYTES); | |
4597 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4598 | if (ipa_len && num_labels > 1) | |
996c9314 | 4599 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4600 | break; |
4601 | ||
4602 | case BGP_EVPN_IMET_ROUTE: | |
4603 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4604 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4605 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4606 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4607 | /* Originating Router's IP Addr */ | |
3714a385 | 4608 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4609 | break; |
4610 | ||
50f74cf1 | 4611 | case BGP_EVPN_ES_ROUTE: |
4612 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4613 | stream_put(s, prd->val, 8); /* RD */ | |
4614 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4615 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4616 | /* VTEP IP */ |
4617 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4618 | break; |
4619 | ||
d62a17ae | 4620 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4621 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4622 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4623 | break; |
4624 | ||
4625 | default: | |
4626 | break; | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4631 | struct bgp_nlri *packet, int withdraw) | |
4632 | { | |
d7c0a89a QY |
4633 | uint8_t *pnt; |
4634 | uint8_t *lim; | |
d62a17ae | 4635 | afi_t afi; |
4636 | safi_t safi; | |
d7c0a89a | 4637 | uint32_t addpath_id; |
d62a17ae | 4638 | int addpath_encoded; |
4639 | int psize = 0; | |
d7c0a89a | 4640 | uint8_t rtype; |
d62a17ae | 4641 | struct prefix p; |
4642 | ||
d62a17ae | 4643 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4644 | pnt = packet->nlri; | |
4645 | lim = pnt + packet->length; | |
4646 | afi = packet->afi; | |
4647 | safi = packet->safi; | |
4648 | addpath_id = 0; | |
4649 | ||
4650 | addpath_encoded = | |
4651 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4652 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4653 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4654 | ||
4655 | for (; pnt < lim; pnt += psize) { | |
4656 | /* Clear prefix structure. */ | |
4657 | memset(&p, 0, sizeof(struct prefix)); | |
4658 | ||
4659 | /* Deal with path-id if AddPath is supported. */ | |
4660 | if (addpath_encoded) { | |
4661 | /* When packet overflow occurs return immediately. */ | |
4662 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4663 | return -1; | |
4664 | ||
4665 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4666 | pnt += BGP_ADDPATH_ID_LEN; | |
4667 | } | |
4668 | ||
4669 | /* All EVPN NLRI types start with type and length. */ | |
4670 | if (pnt + 2 > lim) | |
4671 | return -1; | |
4672 | ||
4673 | rtype = *pnt++; | |
3f54c705 | 4674 | psize = *pnt++; |
d62a17ae | 4675 | |
4676 | /* When packet overflow occur return immediately. */ | |
4677 | if (pnt + psize > lim) | |
4678 | return -1; | |
4679 | ||
4680 | switch (rtype) { | |
4681 | case BGP_EVPN_MAC_IP_ROUTE: | |
4682 | if (process_type2_route(peer, afi, safi, | |
4683 | withdraw ? NULL : attr, pnt, | |
4684 | psize, addpath_id)) { | |
af4c2728 | 4685 | flog_err( |
14454c9f | 4686 | BGP_ERR_EVPN_FAIL, |
d62a17ae | 4687 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4688 | peer->bgp->vrf_id, peer->host, psize); | |
4689 | return -1; | |
4690 | } | |
4691 | break; | |
4692 | ||
4693 | case BGP_EVPN_IMET_ROUTE: | |
4694 | if (process_type3_route(peer, afi, safi, | |
4695 | withdraw ? NULL : attr, pnt, | |
4696 | psize, addpath_id)) { | |
af4c2728 | 4697 | flog_err( |
14454c9f | 4698 | BGP_ERR_PKT_PROCESS, |
d62a17ae | 4699 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4700 | peer->bgp->vrf_id, peer->host, psize); | |
4701 | return -1; | |
4702 | } | |
4703 | break; | |
4704 | ||
50f74cf1 | 4705 | case BGP_EVPN_ES_ROUTE: |
4706 | if (process_type4_route(peer, afi, safi, | |
4707 | withdraw ? NULL : attr, pnt, | |
4708 | psize, addpath_id)) { | |
af4c2728 | 4709 | flog_err( |
14454c9f | 4710 | BGP_ERR_PKT_PROCESS, |
50f74cf1 | 4711 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4712 | peer->bgp->vrf_id, peer->host, psize); | |
4713 | return -1; | |
4714 | } | |
4715 | break; | |
4716 | ||
d62a17ae | 4717 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4718 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4719 | psize, addpath_id, withdraw)) { | |
af4c2728 | 4720 | flog_err( |
14454c9f | 4721 | BGP_ERR_PKT_PROCESS, |
d62a17ae | 4722 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4723 | peer->bgp->vrf_id, peer->host, psize); | |
4724 | return -1; | |
4725 | } | |
4726 | break; | |
4727 | ||
4728 | default: | |
4729 | break; | |
4730 | } | |
4731 | } | |
4732 | ||
4733 | /* Packet length consistency check. */ | |
4734 | if (pnt != lim) | |
4735 | return -1; | |
4736 | ||
4737 | return 0; | |
128ea8ab | 4738 | } |
4739 | ||
10ebe1ab MK |
4740 | /* |
4741 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4742 | * The mapping will be used during route processing. | |
4743 | * bgp_def: default bgp instance | |
4744 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4745 | */ | |
4746 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4747 | { | |
4748 | int i = 0; | |
4749 | struct ecommunity_val *eval = NULL; | |
4750 | struct listnode *node = NULL, *nnode = NULL; | |
4751 | struct ecommunity *ecom = NULL; | |
4752 | ||
4753 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4754 | for (i = 0; i < ecom->size; i++) { | |
4755 | eval = (struct ecommunity_val *)(ecom->val | |
4756 | + (i | |
4757 | * ECOMMUNITY_SIZE)); | |
4758 | map_vrf_to_rt(bgp_vrf, eval); | |
4759 | } | |
4760 | } | |
4761 | } | |
4762 | ||
4763 | /* | |
4764 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4765 | */ | |
4766 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4767 | { | |
4768 | int i; | |
4769 | struct ecommunity_val *eval; | |
4770 | struct listnode *node, *nnode; | |
4771 | struct ecommunity *ecom; | |
4772 | ||
4773 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4774 | for (i = 0; i < ecom->size; i++) { | |
4775 | struct vrf_irt_node *irt; | |
4776 | struct ecommunity_val eval_tmp; | |
4777 | ||
4778 | eval = (struct ecommunity_val *)(ecom->val | |
4779 | + (i | |
4780 | * ECOMMUNITY_SIZE)); | |
4781 | /* If using "automatic" RT, we only care about the | |
4782 | * local-admin sub-field. | |
4783 | * This is to facilitate using VNI as the RT for EBGP | |
4784 | * peering too. | |
4785 | */ | |
4786 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4787 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4788 | BGP_VRF_IMPORT_RT_CFGD)) | |
4789 | mask_ecom_global_admin(&eval_tmp, eval); | |
4790 | ||
4791 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4792 | if (irt) | |
4793 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4794 | } | |
4795 | } | |
4796 | } | |
4797 | ||
4798 | ||
128ea8ab | 4799 | /* |
4800 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4801 | * The mapping will be used during route processing. | |
4802 | */ | |
d62a17ae | 4803 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4804 | { |
d62a17ae | 4805 | int i; |
4806 | struct ecommunity_val *eval; | |
4807 | struct listnode *node, *nnode; | |
4808 | struct ecommunity *ecom; | |
128ea8ab | 4809 | |
d62a17ae | 4810 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4811 | for (i = 0; i < ecom->size; i++) { | |
4812 | eval = (struct ecommunity_val *)(ecom->val | |
4813 | + (i | |
4814 | * ECOMMUNITY_SIZE)); | |
4815 | map_vni_to_rt(bgp, vpn, eval); | |
4816 | } | |
4817 | } | |
128ea8ab | 4818 | } |
4819 | ||
4820 | /* | |
4821 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4822 | */ | |
d62a17ae | 4823 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4824 | { |
d62a17ae | 4825 | int i; |
4826 | struct ecommunity_val *eval; | |
4827 | struct listnode *node, *nnode; | |
4828 | struct ecommunity *ecom; | |
128ea8ab | 4829 | |
d62a17ae | 4830 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4831 | for (i = 0; i < ecom->size; i++) { | |
4832 | struct irt_node *irt; | |
4833 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4834 | |
d62a17ae | 4835 | eval = (struct ecommunity_val *)(ecom->val |
4836 | + (i | |
4837 | * ECOMMUNITY_SIZE)); | |
4838 | /* If using "automatic" RT, we only care about the | |
4839 | * local-admin sub-field. | |
4840 | * This is to facilitate using VNI as the RT for EBGP | |
4841 | * peering too. | |
4842 | */ | |
4843 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4844 | if (!is_import_rt_configured(vpn)) | |
4845 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4846 | |
d62a17ae | 4847 | irt = lookup_import_rt(bgp, &eval_tmp); |
4848 | if (irt) | |
4849 | unmap_vni_from_rt(bgp, vpn, irt); | |
4850 | } | |
4851 | } | |
128ea8ab | 4852 | } |
4853 | ||
4854 | /* | |
4855 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4856 | * The mapping will be used during route processing. | |
4857 | */ | |
d62a17ae | 4858 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4859 | { |
c581d8b0 | 4860 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4861 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4862 | |
d62a17ae | 4863 | /* Map RT to VNI */ |
4864 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4865 | } |
4866 | ||
4867 | /* | |
4868 | * Derive Export RT automatically for VNI. | |
4869 | */ | |
d62a17ae | 4870 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4871 | { |
c581d8b0 | 4872 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4873 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4874 | } |
4875 | ||
676f83b9 | 4876 | /* |
4877 | * Derive RD automatically for VNI using passed information - it | |
4878 | * is of the form RouterId:unique-id-for-vni. | |
4879 | */ | |
4880 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4881 | { | |
92708db6 | 4882 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4883 | } |
4884 | ||
128ea8ab | 4885 | /* |
4886 | * Derive RD automatically for VNI using passed information - it | |
4887 | * is of the form RouterId:unique-id-for-vni. | |
4888 | */ | |
d62a17ae | 4889 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4890 | { |
d62a17ae | 4891 | char buf[100]; |
128ea8ab | 4892 | |
d62a17ae | 4893 | vpn->prd.family = AF_UNSPEC; |
4894 | vpn->prd.prefixlen = 64; | |
4895 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4896 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4897 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4898 | } |
4899 | ||
7df407ed CS |
4900 | /* |
4901 | * Lookup L3-VNI | |
4902 | */ | |
4903 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4904 | { | |
4905 | struct list *inst = bm->bgp; | |
4906 | struct listnode *node; | |
4907 | struct bgp *bgp_vrf; | |
4908 | ||
4909 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4910 | if (bgp_vrf->l3vni == vni) | |
4911 | return true; | |
4912 | } | |
4913 | ||
4914 | return false; | |
4915 | } | |
4916 | ||
128ea8ab | 4917 | /* |
4918 | * Lookup VNI. | |
4919 | */ | |
d62a17ae | 4920 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4921 | { |
d62a17ae | 4922 | struct bgpevpn *vpn; |
4923 | struct bgpevpn tmp; | |
128ea8ab | 4924 | |
d62a17ae | 4925 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4926 | tmp.vni = vni; | |
4927 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4928 | return vpn; | |
128ea8ab | 4929 | } |
4930 | ||
4931 | /* | |
4932 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4933 | */ | |
d62a17ae | 4934 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4935 | struct in_addr originator_ip, |
4936 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4937 | { |
d62a17ae | 4938 | struct bgpevpn *vpn; |
128ea8ab | 4939 | |
d62a17ae | 4940 | if (!bgp) |
4941 | return NULL; | |
128ea8ab | 4942 | |
d62a17ae | 4943 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4944 | if (!vpn) | |
4945 | return NULL; | |
128ea8ab | 4946 | |
d62a17ae | 4947 | /* Set values - RD and RT set to defaults. */ |
4948 | vpn->vni = vni; | |
4949 | vpn->originator_ip = originator_ip; | |
29c53922 | 4950 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4951 | |
d62a17ae | 4952 | /* Initialize route-target import and export lists */ |
4953 | vpn->import_rtl = list_new(); | |
4954 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4955 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4956 | vpn->export_rtl = list_new(); |
4957 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4958 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4959 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4960 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4961 | |
d62a17ae | 4962 | /* Initialize EVPN route table. */ |
960035b2 | 4963 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4964 | |
d62a17ae | 4965 | /* Add to hash */ |
4966 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4967 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4968 | return NULL; | |
4969 | } | |
6a8657d0 MK |
4970 | |
4971 | /* add to l2vni list on corresponding vrf */ | |
4972 | bgpevpn_link_to_l3vni(vpn); | |
4973 | ||
d62a17ae | 4974 | QOBJ_REG(vpn, bgpevpn); |
4975 | return vpn; | |
128ea8ab | 4976 | } |
4977 | ||
4978 | /* | |
4979 | * Free a given VPN - called in multiple scenarios such as zebra | |
4980 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4981 | * This just frees appropriate memory, caller should have taken other | |
4982 | * needed actions. | |
4983 | */ | |
d62a17ae | 4984 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4985 | { |
6a8657d0 | 4986 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4987 | bgp_table_unlock(vpn->route_table); |
4988 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4989 | list_delete_and_null(&vpn->import_rtl); |
4990 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4991 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4992 | hash_release(bgp->vnihash, vpn); |
4993 | QOBJ_UNREG(vpn); | |
4994 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4995 | } |
4996 | ||
4997 | /* | |
50f74cf1 | 4998 | * Lookup local ES. |
4999 | */ | |
5000 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5001 | { | |
5002 | struct evpnes *es; | |
5003 | struct evpnes tmp; | |
5004 | ||
5005 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5006 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5007 | es = hash_lookup(bgp->esihash, &tmp); | |
5008 | return es; | |
5009 | } | |
5010 | ||
5011 | /* | |
5012 | * Create a new local es - invoked upon zebra notification. | |
5013 | */ | |
5014 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5015 | esi_t *esi, | |
5016 | struct ipaddr *originator_ip) | |
5017 | { | |
5018 | char buf[100]; | |
5019 | struct evpnes *es; | |
5020 | ||
5021 | if (!bgp) | |
5022 | return NULL; | |
5023 | ||
5024 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5025 | if (!es) | |
5026 | return NULL; | |
5027 | ||
5028 | /* set the ESI and originator_ip */ | |
5029 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5030 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5031 | ||
5032 | /* Initialise the VTEP list */ | |
5033 | es->vtep_list = list_new(); | |
5034 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5035 | ||
5036 | /* auto derive RD for this es */ | |
5037 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5038 | es->prd.family = AF_UNSPEC; | |
5039 | es->prd.prefixlen = 64; | |
5040 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5041 | (void)str2prefix_rd(buf, &es->prd); | |
5042 | ||
5043 | /* Initialize the ES route table */ | |
5044 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5045 | ||
5046 | /* Add to hash */ | |
5047 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5048 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5049 | return NULL; | |
5050 | } | |
5051 | ||
5052 | QOBJ_REG(es, evpnes); | |
5053 | return es; | |
5054 | } | |
5055 | ||
5056 | /* | |
5057 | * Free a given ES - | |
5058 | * This just frees appropriate memory, caller should have taken other | |
5059 | * needed actions. | |
5060 | */ | |
5061 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5062 | { | |
5063 | list_delete_and_null(&es->vtep_list); | |
5064 | bgp_table_unlock(es->route_table); | |
5065 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5066 | hash_release(bgp->esihash, es); | |
5067 | QOBJ_UNREG(es); | |
5068 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5069 | } | |
5070 | ||
5071 | /* | |
5072 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5073 | */ |
d62a17ae | 5074 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5075 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5076 | { |
d62a17ae | 5077 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 5078 | } |
5079 | ||
5080 | /* | |
50f74cf1 | 5081 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5082 | */ |
d62a17ae | 5083 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5084 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5085 | { |
d62a17ae | 5086 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 5087 | } |
5088 | ||
db0e1937 MK |
5089 | /* filter routes which have martian next hops */ |
5090 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5091 | { | |
0291c246 MK |
5092 | afi_t afi; |
5093 | safi_t safi; | |
5094 | struct bgp_node *rd_rn, *rn; | |
5095 | struct bgp_table *table; | |
5096 | struct bgp_info *ri; | |
db0e1937 MK |
5097 | |
5098 | afi = AFI_L2VPN; | |
5099 | safi = SAFI_EVPN; | |
5100 | ||
5101 | /* Walk entire global routing table and evaluate routes which could be | |
5102 | * imported into this VPN. Note that we cannot just look at the routes | |
5103 | * for the VNI's RD - | |
5104 | * remote routes applicable for this VNI could have any RD. | |
5105 | */ | |
5106 | /* EVPN routes are a 2-level table. */ | |
5107 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5108 | rd_rn = bgp_route_next(rd_rn)) { | |
5109 | table = (struct bgp_table *)(rd_rn->info); | |
5110 | if (!table) | |
5111 | continue; | |
5112 | ||
5113 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5114 | ||
5115 | for (ri = rn->info; ri; ri = ri->next) { | |
5116 | ||
5117 | /* Consider "valid" remote routes applicable for | |
5118 | * this VNI. */ | |
5119 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
5120 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
5121 | continue; | |
5122 | ||
60466a63 | 5123 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
5124 | |
5125 | char attr_str[BUFSIZ]; | |
5126 | char pbuf[PREFIX_STRLEN]; | |
5127 | ||
5128 | bgp_dump_attr(ri->attr, attr_str, | |
5129 | BUFSIZ); | |
5130 | ||
5131 | if (bgp_debug_update(ri->peer, &rn->p, | |
5132 | NULL, 1)) | |
5133 | zlog_debug( | |
b682f6de | 5134 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5135 | bgp->vrf_id, |
5136 | prefix2str( | |
60466a63 | 5137 | &rn->p, pbuf, |
db0e1937 MK |
5138 | sizeof(pbuf)), |
5139 | attr_str); | |
5140 | ||
5141 | bgp_evpn_unimport_route(bgp, afi, safi, | |
5142 | &rn->p, ri); | |
5143 | ||
60466a63 QY |
5144 | bgp_rib_remove(rn, ri, ri->peer, afi, |
5145 | safi); | |
db0e1937 | 5146 | } |
db0e1937 MK |
5147 | } |
5148 | } | |
5149 | } | |
5150 | ||
5151 | return 0; | |
5152 | } | |
5153 | ||
128ea8ab | 5154 | /* |
5155 | * Handle del of a local MACIP. | |
5156 | */ | |
d62a17ae | 5157 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5158 | struct ipaddr *ip) | |
128ea8ab | 5159 | { |
d62a17ae | 5160 | struct bgpevpn *vpn; |
5161 | struct prefix_evpn p; | |
128ea8ab | 5162 | |
d62a17ae | 5163 | /* Lookup VNI hash - should exist. */ |
5164 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5165 | if (!vpn || !is_vni_live(vpn)) { | |
28642513 DS |
5166 | flog_warn(BGP_WARN_EVPN_VPN_VNI, |
5167 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
d62a17ae | 5168 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5169 | return -1; | |
5170 | } | |
128ea8ab | 5171 | |
d62a17ae | 5172 | /* Remove EVPN type-2 route and schedule for processing. */ |
5173 | build_evpn_type2_prefix(&p, mac, ip); | |
5174 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5175 | |
d62a17ae | 5176 | return 0; |
128ea8ab | 5177 | } |
5178 | ||
5179 | /* | |
5180 | * Handle add of a local MACIP. | |
5181 | */ | |
d62a17ae | 5182 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5183 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5184 | { |
d62a17ae | 5185 | struct bgpevpn *vpn; |
5186 | struct prefix_evpn p; | |
128ea8ab | 5187 | |
d62a17ae | 5188 | /* Lookup VNI hash - should exist. */ |
5189 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5190 | if (!vpn || !is_vni_live(vpn)) { | |
28642513 DS |
5191 | flog_warn(BGP_WARN_EVPN_VPN_VNI, |
5192 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
d62a17ae | 5193 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5194 | return -1; | |
5195 | } | |
128ea8ab | 5196 | |
d62a17ae | 5197 | /* Create EVPN type-2 route and schedule for processing. */ |
5198 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5199 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5200 | char buf[ETHER_ADDR_STRLEN]; |
5201 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5202 | |
af4c2728 | 5203 | flog_err( |
14454c9f | 5204 | BGP_ERR_EVPN_ROUTE_CREATE, |
ead40654 | 5205 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5206 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5207 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5208 | ? "sticky gateway" | |
5209 | : "", | |
d62a17ae | 5210 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5211 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5212 | return -1; |
5213 | } | |
128ea8ab | 5214 | |
d62a17ae | 5215 | return 0; |
128ea8ab | 5216 | } |
5217 | ||
6a8657d0 MK |
5218 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5219 | struct bgp *bgp_vrf) | |
5220 | { | |
0a1a07cb | 5221 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
6a8657d0 MK |
5222 | struct bgp *bgp_def = NULL; |
5223 | ||
5224 | bgp_def = bgp_get_default(); | |
5225 | assert(bgp_def); | |
5226 | ||
6a8657d0 MK |
5227 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5228 | bgpevpn_link_to_l3vni(vpn); | |
5229 | } | |
5230 | ||
996c9314 LB |
5231 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5232 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5233 | { |
5234 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5235 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5236 | struct listnode *node = NULL; |
5237 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5238 | as_t as = 0; |
5239 | ||
d846168d | 5240 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5241 | * auto-creatio |
5242 | */ | |
fe1dc5a3 MK |
5243 | bgp_def = bgp_get_default(); |
5244 | if (!bgp_def) { | |
af4c2728 | 5245 | flog_err( |
14454c9f | 5246 | BGP_ERR_NO_DFLT, |
996c9314 LB |
5247 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", |
5248 | l3vni); | |
fe1dc5a3 MK |
5249 | return -1; |
5250 | } | |
5251 | as = bgp_def->as; | |
5252 | ||
5253 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5254 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5255 | if (!bgp_vrf) { |
5256 | ||
5257 | int ret = 0; | |
5258 | ||
5259 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5260 | BGP_INSTANCE_TYPE_VRF); | |
5261 | switch (ret) { | |
5262 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
af4c2728 | 5263 | flog_err(BGP_ERR_MULTI_INSTANCE, |
14454c9f | 5264 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5265 | return -1; |
5266 | case BGP_ERR_AS_MISMATCH: | |
af4c2728 | 5267 | flog_err(BGP_ERR_EVPN_AS_MISMATCH, |
14454c9f | 5268 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5269 | return -1; |
5270 | case BGP_ERR_INSTANCE_MISMATCH: | |
af4c2728 | 5271 | flog_err(BGP_ERR_EVPN_INSTANCE_MISMATCH, |
14454c9f | 5272 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5273 | return -1; |
5274 | } | |
5275 | ||
5276 | /* mark as auto created */ | |
5277 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5278 | } | |
5279 | ||
5280 | /* associate with l3vni */ | |
5281 | bgp_vrf->l3vni = l3vni; | |
5282 | ||
5283 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5284 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5285 | ||
b67a60d2 | 5286 | /* set the originator ip */ |
5287 | bgp_vrf->originator_ip = originator_ip; | |
5288 | ||
c48d9f5f MK |
5289 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5290 | if (filter) | |
5291 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5292 | ||
c581d8b0 MK |
5293 | /* auto derive RD/RT */ |
5294 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5295 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5296 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5297 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5298 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5299 | |
6a8657d0 MK |
5300 | /* link all corresponding l2vnis */ |
5301 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5302 | (void (*)(struct hash_backet *, |
5303 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5304 | bgp_vrf); |
5305 | ||
c48d9f5f MK |
5306 | /* Only update all corresponding type-2 routes if we are advertising two |
5307 | * labels along with type-2 routes | |
5308 | */ | |
5309 | if (!filter) | |
5310 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5311 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5312 | |
06d2e8f3 MK |
5313 | /* advertise type-5 routes if needed */ |
5314 | update_advertise_vrf_routes(bgp_vrf); | |
5315 | ||
5ba238b7 MK |
5316 | /* install all remote routes belonging to this l3vni into correspondng |
5317 | * vrf */ | |
5318 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5319 | |
5320 | return 0; | |
5321 | } | |
5322 | ||
996c9314 | 5323 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5324 | { |
5325 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5326 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5327 | struct listnode *node = NULL; | |
18abc1eb | 5328 | struct listnode *next = NULL; |
f1f8b53c | 5329 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5330 | |
5331 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5332 | if (!bgp_vrf) { | |
af4c2728 | 5333 | flog_err( |
14454c9f | 5334 | BGP_ERR_NO_DFLT, |
996c9314 LB |
5335 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5336 | l3vni); | |
fe1dc5a3 MK |
5337 | return -1; |
5338 | } | |
5339 | ||
f1f8b53c MK |
5340 | bgp_def = bgp_get_default(); |
5341 | if (!bgp_def) { | |
af4c2728 | 5342 | flog_err( |
14454c9f | 5343 | BGP_ERR_NO_DFLT, |
996c9314 LB |
5344 | "Cannot process L3VNI %u Del - Could not find default BGP instance", |
5345 | l3vni); | |
f1f8b53c MK |
5346 | return -1; |
5347 | } | |
5348 | ||
d846168d CS |
5349 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
5350 | * bgp_delete would not remove/decrement bgp_info of the ip_prefix | |
5351 | * routes. This will uninstalling the routes from zebra and decremnt the | |
5352 | * bgp info count. | |
523cafc4 | 5353 | */ |
d846168d | 5354 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5355 | |
06d2e8f3 MK |
5356 | /* delete/withdraw all type-5 routes */ |
5357 | delete_withdraw_vrf_routes(bgp_vrf); | |
5358 | ||
fe1dc5a3 MK |
5359 | /* remove the l3vni from vrf instance */ |
5360 | bgp_vrf->l3vni = 0; | |
5361 | ||
5362 | /* remove the Rmac from the BGP vrf */ | |
5363 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5364 | ||
c581d8b0 | 5365 | /* delete RD/RT */ |
1525e99f | 5366 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5367 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5368 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5369 | } |
1525e99f | 5370 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5371 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5372 | } |
fe1dc5a3 | 5373 | |
f1f8b53c | 5374 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5375 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5376 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5377 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5378 | update_routes_for_vni(bgp_def, vpn); | |
5379 | } | |
5380 | } | |
fe1dc5a3 | 5381 | |
18abc1eb | 5382 | /* If any L2VNIs point to this instance, unlink them. */ |
5383 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5384 | bgpevpn_unlink_from_l3vni(vpn); | |
5385 | ||
fe1dc5a3 MK |
5386 | /* Delete the instance if it was autocreated */ |
5387 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5388 | bgp_delete(bgp_vrf); | |
5389 | ||
5390 | return 0; | |
5391 | } | |
5392 | ||
128ea8ab | 5393 | /* |
5394 | * Handle del of a local VNI. | |
5395 | */ | |
d62a17ae | 5396 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5397 | { |
d62a17ae | 5398 | struct bgpevpn *vpn; |
128ea8ab | 5399 | |
d62a17ae | 5400 | /* Locate VNI hash */ |
5401 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5402 | if (!vpn) { | |
1e00627b | 5403 | if (bgp_debug_zebra(NULL)) |
28642513 DS |
5404 | flog_warn(BGP_WARN_EVPN_VPN_VNI, |
5405 | "%u: VNI hash entry for VNI %u not found at DEL", | |
5406 | bgp->vrf_id, vni); | |
d62a17ae | 5407 | return 0; |
5408 | } | |
128ea8ab | 5409 | |
d62a17ae | 5410 | /* Remove all local EVPN routes and schedule for processing (to |
5411 | * withdraw from peers). | |
5412 | */ | |
5413 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5414 | |
db0e1937 MK |
5415 | /* |
5416 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5417 | */ | |
5418 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5419 | ||
d62a17ae | 5420 | /* Clear "live" flag and see if hash needs to be freed. */ |
5421 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5422 | if (!is_vni_configured(vpn)) | |
5423 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5424 | |
d62a17ae | 5425 | return 0; |
128ea8ab | 5426 | } |
5427 | ||
5428 | /* | |
d1911c26 | 5429 | * Handle add (or update) of a local VNI. The VNI changes we care |
5430 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5431 | */ |
d62a17ae | 5432 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5433 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5434 | { |
5435 | struct bgpevpn *vpn; | |
5436 | struct prefix_evpn p; | |
5437 | ||
d62a17ae | 5438 | /* Lookup VNI. If present and no change, exit. */ |
5439 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5440 | if (vpn) { |
29c53922 | 5441 | |
d1911c26 | 5442 | if (is_vni_live(vpn) |
5443 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5444 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5445 | /* Probably some other param has changed that we don't | |
5446 | * care about. */ | |
5447 | return 0; | |
5448 | ||
5449 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5450 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5451 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5452 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5453 | bgpevpn_link_to_l3vni(vpn); |
5454 | } | |
29c53922 | 5455 | |
d1911c26 | 5456 | /* If tunnel endpoint IP has changed, update (and delete prior |
5457 | * type-3 route, if needed.) | |
5458 | */ | |
5459 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5460 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5461 | |
d1911c26 | 5462 | /* Update all routes with new endpoint IP and/or export RT |
5463 | * for VRFs | |
5464 | */ | |
5465 | if (is_vni_live(vpn)) | |
5466 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5467 | } |
5468 | ||
5469 | /* Create or update as appropriate. */ | |
5470 | if (!vpn) { | |
29c53922 | 5471 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5472 | if (!vpn) { |
af4c2728 | 5473 | flog_err( |
14454c9f | 5474 | BGP_ERR_VNI, |
d62a17ae | 5475 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5476 | bgp->vrf_id, vni); | |
5477 | return -1; | |
5478 | } | |
5479 | } | |
5480 | ||
db0e1937 | 5481 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5482 | if (is_vni_live(vpn)) |
5483 | return 0; | |
5484 | ||
d62a17ae | 5485 | /* Mark as "live" */ |
5486 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5487 | ||
db0e1937 MK |
5488 | /* tunnel is now active, add tunnel-ip to db */ |
5489 | bgp_tip_add(bgp, &originator_ip); | |
5490 | ||
5491 | /* filter routes as nexthop database has changed */ | |
5492 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5493 | ||
d62a17ae | 5494 | /* Create EVPN type-3 route and schedule for processing. */ |
5495 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 5496 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { |
af4c2728 | 5497 | flog_err(BGP_ERR_EVPN_ROUTE_CREATE, |
14454c9f DS |
5498 | "%u: Type3 route creation failure for VNI %u", |
5499 | bgp->vrf_id, vni); | |
d62a17ae | 5500 | return -1; |
5501 | } | |
5502 | ||
5503 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5504 | * VNI, | |
5505 | * install them. | |
5506 | */ | |
5507 | install_routes_for_vni(bgp, vpn); | |
5508 | ||
d7d97010 MK |
5509 | /* If we are advertising gateway mac-ip |
5510 | It needs to be conveyed again to zebra */ | |
5511 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5512 | ||
d62a17ae | 5513 | return 0; |
b18825eb | 5514 | } |
14c1a7bf | 5515 | |
50f74cf1 | 5516 | /* |
5517 | * bgp_evpn_local_es_del | |
5518 | */ | |
5519 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5520 | esi_t *esi, | |
5521 | struct ipaddr *originator_ip) | |
5522 | { | |
5523 | char buf[ESI_STR_LEN]; | |
5524 | struct evpnes *es = NULL; | |
5525 | ||
5526 | if (!bgp->esihash) { | |
af4c2728 | 5527 | flog_err(BGP_ERR_ES_CREATE, "%u: ESI hash not yet created", |
14454c9f | 5528 | bgp->vrf_id); |
50f74cf1 | 5529 | return -1; |
5530 | } | |
5531 | ||
5532 | /* Lookup ESI hash - should exist. */ | |
5533 | es = bgp_evpn_lookup_es(bgp, esi); | |
5534 | if (!es) { | |
28642513 DS |
5535 | flog_warn(BGP_WARN_EVPN_ESI, |
5536 | "%u: ESI hash entry for ESI %s at Local ES DEL", | |
5537 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5538 | return -1; |
5539 | } | |
5540 | ||
5541 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5542 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5543 | */ |
5544 | delete_routes_for_es(bgp, es); | |
5545 | ||
5546 | /* free the hash entry */ | |
5547 | bgp_evpn_es_free(bgp, es); | |
5548 | ||
5549 | return 0; | |
5550 | } | |
5551 | ||
5552 | /* | |
5553 | * bgp_evpn_local_es_add | |
5554 | */ | |
5555 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5556 | esi_t *esi, | |
5557 | struct ipaddr *originator_ip) | |
5558 | { | |
5559 | char buf[ESI_STR_LEN]; | |
5560 | struct evpnes *es = NULL; | |
5561 | struct prefix_evpn p; | |
5562 | ||
5563 | if (!bgp->esihash) { | |
af4c2728 | 5564 | flog_err(BGP_ERR_ES_CREATE, "%u: ESI hash not yet created", |
14454c9f | 5565 | bgp->vrf_id); |
50f74cf1 | 5566 | return -1; |
5567 | } | |
5568 | ||
5569 | /* create the new es */ | |
2bb9eff4 | 5570 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5571 | if (!es) { |
5572 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5573 | if (!es) { | |
af4c2728 | 5574 | flog_err( |
14454c9f | 5575 | BGP_ERR_ES_CREATE, |
50f74cf1 | 5576 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5577 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5578 | return -1; | |
5579 | } | |
5580 | } | |
5581 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5582 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5583 | ||
5584 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5585 | if (update_evpn_type4_route(bgp, es, &p)) { | |
af4c2728 | 5586 | flog_err(BGP_ERR_EVPN_ROUTE_CREATE, |
14454c9f DS |
5587 | "%u: Type4 route creation failure for ESI %s", |
5588 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5589 | return -1; |
5590 | } | |
5591 | ||
5592 | /* import all remote ES routes in th ES table */ | |
5593 | install_routes_for_es(bgp, es); | |
5594 | ||
5595 | return 0; | |
5596 | } | |
5597 | ||
7724c0a1 | 5598 | /* |
5599 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5600 | * EVPN routes from peers. | |
5601 | */ | |
d62a17ae | 5602 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5603 | { |
9d303b37 DL |
5604 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5605 | void *))cleanup_vni_on_disable, | |
5606 | bgp); | |
7724c0a1 | 5607 | } |
5608 | ||
14c1a7bf | 5609 | /* |
5610 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5611 | * BGP instance (default) is being freed. | |
5612 | */ | |
d62a17ae | 5613 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5614 | { |
1525e99f DS |
5615 | hash_iterate(bgp->vnihash, |
5616 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5617 | bgp); | |
5618 | ||
5619 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5620 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5621 | |
5622 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5623 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5624 | |
5625 | hash_free(bgp->vnihash); | |
d62a17ae | 5626 | bgp->vnihash = NULL; |
50f74cf1 | 5627 | if (bgp->esihash) |
5628 | hash_free(bgp->esihash); | |
5629 | bgp->esihash = NULL; | |
1525e99f DS |
5630 | |
5631 | list_delete_and_null(&bgp->vrf_import_rtl); | |
5632 | list_delete_and_null(&bgp->vrf_export_rtl); | |
5633 | list_delete_and_null(&bgp->l2vnis); | |
14c1a7bf | 5634 | } |
5635 | ||
5636 | /* | |
5637 | * Initialization for EVPN | |
5638 | * Create | |
5639 | * VNI hash table | |
5640 | * hash for RT to VNI | |
14c1a7bf | 5641 | */ |
d62a17ae | 5642 | void bgp_evpn_init(struct bgp *bgp) |
5643 | { | |
5644 | bgp->vnihash = | |
5645 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5646 | bgp->esihash = |
5647 | hash_create(esi_hash_keymake, esi_cmp, | |
5648 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5649 | bgp->import_rt_hash = |
5650 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5651 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5652 | bgp->vrf_import_rt_hash = |
5653 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5654 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5655 | bgp->vrf_import_rtl = list_new(); |
5656 | bgp->vrf_import_rtl->cmp = | |
5657 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5658 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5659 | bgp->vrf_export_rtl = list_new(); |
5660 | bgp->vrf_export_rtl->cmp = | |
5661 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5662 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5663 | bgp->l2vnis = list_new(); |
996c9314 | 5664 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5665 | } |
10ebe1ab MK |
5666 | |
5667 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5668 | { | |
5669 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5670 | } |