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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" | |
46 | #include "bgpd/bgp_aspath.h" | |
d7d97010 | 47 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 48 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 49 | |
50 | /* | |
51 | * Definitions and external declarations. | |
52 | */ | |
53 | extern struct zclient *zclient; | |
54 | ||
55 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 56 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 57 | |
58 | ||
59 | /* | |
60 | * Static function declarations | |
61 | */ | |
50f74cf1 | 62 | static void delete_evpn_route_entry(struct bgp *bgp, |
63 | afi_t afi, safi_t safi, | |
64 | struct bgp_node *rn, | |
d62a17ae | 65 | struct bgp_info **ri); |
66 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); | |
14c1a7bf | 67 | |
68 | /* | |
69 | * Private functions. | |
70 | */ | |
71 | ||
50f74cf1 | 72 | /* compare two IPV4 VTEP IPs */ |
73 | static int evpn_vtep_ip_cmp(const void *p1, const void *p2) | |
74 | { | |
75 | const struct in_addr *ip1 = p1; | |
76 | const struct in_addr *ip2 = p2; | |
77 | ||
78 | if (!ip1 && !ip2) | |
79 | return 1; | |
80 | if (!ip1 || !ip2) | |
81 | return 0; | |
82 | return (ip1->s_addr == ip2->s_addr); | |
83 | } | |
84 | ||
85 | /* | |
86 | * Make hash key for ESI. | |
87 | */ | |
88 | static unsigned int esi_hash_keymake(void *p) | |
89 | { | |
90 | struct evpnes *pes = p; | |
91 | const void *pnt = (void *)pes->esi.val; | |
92 | ||
93 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
94 | } | |
95 | ||
96 | /* | |
97 | * Compare two ESIs. | |
98 | */ | |
99 | static int esi_cmp(const void *p1, const void *p2) | |
100 | { | |
101 | const struct evpnes *pes1 = p1; | |
102 | const struct evpnes *pes2 = p2; | |
103 | ||
104 | if (pes1 == NULL && pes2 == NULL) | |
105 | return 1; | |
106 | ||
107 | if (pes1 == NULL || pes2 == NULL) | |
108 | return 0; | |
109 | ||
110 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
111 | } | |
112 | ||
14c1a7bf | 113 | /* |
114 | * Make vni hash key. | |
115 | */ | |
d62a17ae | 116 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 117 | { |
d62a17ae | 118 | struct bgpevpn *vpn = p; |
119 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 120 | } |
121 | ||
122 | /* | |
123 | * Comparison function for vni hash | |
124 | */ | |
d62a17ae | 125 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 126 | { |
d62a17ae | 127 | const struct bgpevpn *vpn1 = p1; |
128 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 129 | |
d62a17ae | 130 | if (!vpn1 && !vpn2) |
131 | return 1; | |
132 | if (!vpn1 || !vpn2) | |
133 | return 0; | |
134 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 135 | } |
136 | ||
10ebe1ab MK |
137 | /* |
138 | * Make vrf import route target hash key. | |
139 | */ | |
140 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
141 | { | |
142 | struct vrf_irt_node *irt = p; | |
143 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
144 | |
145 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
146 | } |
147 | ||
148 | /* | |
149 | * Comparison function for vrf import rt hash | |
150 | */ | |
151 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
152 | { | |
153 | const struct vrf_irt_node *irt1 = p1; | |
154 | const struct vrf_irt_node *irt2 = p2; | |
155 | ||
156 | if (irt1 == NULL && irt2 == NULL) | |
157 | return 1; | |
158 | ||
159 | if (irt1 == NULL || irt2 == NULL) | |
160 | return 0; | |
161 | ||
162 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Create a new vrf import_rt in default instance | |
167 | */ | |
168 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
169 | { | |
170 | struct bgp *bgp_def = NULL; | |
171 | struct vrf_irt_node *irt; | |
172 | ||
173 | bgp_def = bgp_get_default(); | |
174 | if (!bgp_def) { | |
175 | zlog_err("vrf import rt new - def instance not created yet"); | |
176 | return NULL; | |
177 | } | |
178 | ||
179 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
180 | sizeof(struct vrf_irt_node)); | |
181 | if (!irt) | |
182 | return NULL; | |
183 | ||
184 | irt->rt = *rt; | |
185 | irt->vrfs = list_new(); | |
186 | ||
187 | /* Add to hash */ | |
188 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
189 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | return irt; | |
194 | } | |
195 | ||
196 | /* | |
197 | * Free the vrf import rt node | |
198 | */ | |
199 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
200 | { | |
201 | struct bgp *bgp_def = NULL; | |
202 | ||
203 | bgp_def = bgp_get_default(); | |
204 | if (!bgp_def) { | |
205 | zlog_err("vrf import rt free - def instance not created yet"); | |
206 | return; | |
207 | } | |
208 | ||
209 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
5d9cbca2 | 210 | list_delete_and_null(&irt->vrfs); |
10ebe1ab MK |
211 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
212 | } | |
213 | ||
214 | /* | |
215 | * Function to lookup Import RT node - used to map a RT to set of | |
216 | * VNIs importing routes with that RT. | |
217 | */ | |
218 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
219 | { | |
220 | struct bgp *bgp_def = NULL; | |
221 | struct vrf_irt_node *irt; | |
222 | struct vrf_irt_node tmp; | |
223 | ||
224 | bgp_def = bgp_get_default(); | |
225 | if (!bgp_def) { | |
226 | zlog_err("vrf import rt lookup - def instance not created yet"); | |
227 | return NULL; | |
228 | } | |
229 | ||
230 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
231 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
232 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
233 | return irt; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
238 | */ | |
996c9314 | 239 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
240 | { |
241 | struct listnode *node = NULL, *nnode = NULL; | |
242 | struct bgp *tmp_bgp_vrf = NULL; | |
243 | ||
244 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
245 | if (tmp_bgp_vrf == bgp_vrf) | |
246 | return 1; | |
247 | } | |
248 | return 0; | |
249 | } | |
250 | ||
14c1a7bf | 251 | /* |
252 | * Make import route target hash key. | |
253 | */ | |
d62a17ae | 254 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 255 | { |
d62a17ae | 256 | struct irt_node *irt = p; |
257 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
258 | |
259 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 260 | } |
261 | ||
262 | /* | |
263 | * Comparison function for import rt hash | |
264 | */ | |
d62a17ae | 265 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 266 | { |
d62a17ae | 267 | const struct irt_node *irt1 = p1; |
268 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 269 | |
d62a17ae | 270 | if (irt1 == NULL && irt2 == NULL) |
271 | return 1; | |
14c1a7bf | 272 | |
d62a17ae | 273 | if (irt1 == NULL || irt2 == NULL) |
274 | return 0; | |
14c1a7bf | 275 | |
d62a17ae | 276 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 277 | } |
278 | ||
7724c0a1 | 279 | /* |
128ea8ab | 280 | * Create a new import_rt |
281 | */ | |
d62a17ae | 282 | static struct irt_node *import_rt_new(struct bgp *bgp, |
283 | struct ecommunity_val *rt) | |
128ea8ab | 284 | { |
d62a17ae | 285 | struct irt_node *irt; |
128ea8ab | 286 | |
d62a17ae | 287 | if (!bgp) |
288 | return NULL; | |
128ea8ab | 289 | |
d62a17ae | 290 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
291 | if (!irt) | |
292 | return NULL; | |
128ea8ab | 293 | |
d62a17ae | 294 | irt->rt = *rt; |
295 | irt->vnis = list_new(); | |
128ea8ab | 296 | |
d62a17ae | 297 | /* Add to hash */ |
298 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
299 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
300 | return NULL; | |
301 | } | |
128ea8ab | 302 | |
d62a17ae | 303 | return irt; |
128ea8ab | 304 | } |
305 | ||
306 | /* | |
307 | * Free the import rt node | |
7724c0a1 | 308 | */ |
d62a17ae | 309 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 310 | { |
d62a17ae | 311 | hash_release(bgp->import_rt_hash, irt); |
b1ab0dfe | 312 | list_delete_and_null(&irt->vnis); |
d62a17ae | 313 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 314 | } |
315 | ||
14c1a7bf | 316 | /* |
128ea8ab | 317 | * Function to lookup Import RT node - used to map a RT to set of |
318 | * VNIs importing routes with that RT. | |
319 | */ | |
d62a17ae | 320 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
321 | struct ecommunity_val *rt) | |
128ea8ab | 322 | { |
d62a17ae | 323 | struct irt_node *irt; |
324 | struct irt_node tmp; | |
128ea8ab | 325 | |
d62a17ae | 326 | memset(&tmp, 0, sizeof(struct irt_node)); |
327 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
328 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
329 | return irt; | |
128ea8ab | 330 | } |
331 | ||
332 | /* | |
333 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
334 | */ | |
d62a17ae | 335 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 336 | { |
d62a17ae | 337 | struct listnode *node, *nnode; |
338 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 339 | |
d62a17ae | 340 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
341 | if (tmp_vpn == vpn) | |
342 | return 1; | |
343 | } | |
128ea8ab | 344 | |
d62a17ae | 345 | return 0; |
128ea8ab | 346 | } |
347 | ||
348 | /* | |
349 | * Compare Route Targets. | |
350 | */ | |
d62a17ae | 351 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
352 | struct ecommunity *ecom2) | |
128ea8ab | 353 | { |
d62a17ae | 354 | if (ecom1 && !ecom2) |
355 | return -1; | |
128ea8ab | 356 | |
d62a17ae | 357 | if (!ecom1 && ecom2) |
358 | return 1; | |
128ea8ab | 359 | |
d62a17ae | 360 | if (!ecom1 && !ecom2) |
361 | return 0; | |
128ea8ab | 362 | |
d62a17ae | 363 | if (ecom1->str && !ecom2->str) |
364 | return -1; | |
128ea8ab | 365 | |
d62a17ae | 366 | if (!ecom1->str && ecom2->str) |
367 | return 1; | |
128ea8ab | 368 | |
d62a17ae | 369 | if (!ecom1->str && !ecom2->str) |
370 | return 0; | |
128ea8ab | 371 | |
d62a17ae | 372 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 373 | } |
374 | ||
987d8198 DS |
375 | static void evpn_xxport_delete_ecomm(void *val) |
376 | { | |
377 | struct ecommunity *ecomm = val; | |
378 | ecommunity_free(&ecomm); | |
379 | } | |
380 | ||
128ea8ab | 381 | /* |
382 | * Mask off global-admin field of specified extended community (RT), | |
383 | * just retain the local-admin field. | |
384 | */ | |
d62a17ae | 385 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
386 | struct ecommunity_val *src) | |
128ea8ab | 387 | { |
d7c0a89a | 388 | uint8_t type; |
128ea8ab | 389 | |
d62a17ae | 390 | type = src->val[0]; |
391 | dst->val[0] = 0; | |
392 | if (type == ECOMMUNITY_ENCODE_AS) { | |
393 | dst->val[2] = dst->val[3] = 0; | |
394 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
395 | || type == ECOMMUNITY_ENCODE_IP) { | |
396 | dst->val[2] = dst->val[3] = 0; | |
397 | dst->val[4] = dst->val[5] = 0; | |
398 | } | |
128ea8ab | 399 | } |
400 | ||
10ebe1ab MK |
401 | /* |
402 | * Map one RT to specified VRF. | |
403 | * bgp_vrf = BGP vrf instance | |
404 | */ | |
996c9314 | 405 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
406 | { |
407 | struct vrf_irt_node *irt = NULL; | |
408 | struct ecommunity_val eval_tmp; | |
409 | ||
410 | /* If using "automatic" RT, | |
411 | * we only care about the local-admin sub-field. | |
412 | * This is to facilitate using L3VNI(VRF-VNI) | |
413 | * as the RT for EBGP peering too. | |
414 | */ | |
415 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 416 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
417 | mask_ecom_global_admin(&eval_tmp, eval); |
418 | ||
419 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
420 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
421 | /* Already mapped. */ | |
422 | return; | |
10ebe1ab | 423 | |
e066d6d0 | 424 | if (!irt) |
10ebe1ab | 425 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
426 | |
427 | /* Add VRF to the list for this RT. */ | |
428 | listnode_add(irt->vrfs, bgp_vrf); | |
429 | } | |
430 | ||
431 | /* | |
432 | * Unmap specified VRF from specified RT. If there are no other | |
433 | * VRFs for this RT, then the RT hash is deleted. | |
434 | * bgp_vrf: BGP VRF specific instance | |
435 | */ | |
996c9314 | 436 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
437 | { |
438 | /* Delete VRF from list for this RT. */ | |
439 | listnode_delete(irt->vrfs, bgp_vrf); | |
440 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
441 | vrf_import_rt_free(irt); |
442 | } | |
443 | } | |
444 | ||
128ea8ab | 445 | /* |
446 | * Map one RT to specified VNI. | |
14c1a7bf | 447 | */ |
d62a17ae | 448 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
449 | struct ecommunity_val *eval) | |
128ea8ab | 450 | { |
d62a17ae | 451 | struct irt_node *irt; |
452 | struct ecommunity_val eval_tmp; | |
128ea8ab | 453 | |
d62a17ae | 454 | /* If using "automatic" RT, we only care about the local-admin |
455 | * sub-field. | |
456 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
457 | */ | |
458 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
459 | if (!is_import_rt_configured(vpn)) | |
460 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 461 | |
d62a17ae | 462 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 463 | if (irt) |
d62a17ae | 464 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
465 | /* Already mapped. */ | |
466 | return; | |
128ea8ab | 467 | |
d62a17ae | 468 | if (!irt) { |
469 | irt = import_rt_new(bgp, &eval_tmp); | |
470 | assert(irt); | |
471 | } | |
128ea8ab | 472 | |
d62a17ae | 473 | /* Add VNI to the hash list for this RT. */ |
474 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 475 | } |
476 | ||
477 | /* | |
478 | * Unmap specified VNI from specified RT. If there are no other | |
479 | * VNIs for this RT, then the RT hash is deleted. | |
480 | */ | |
d62a17ae | 481 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
482 | struct irt_node *irt) | |
14c1a7bf | 483 | { |
d62a17ae | 484 | /* Delete VNI from hash list for this RT. */ |
485 | listnode_delete(irt->vnis, vpn); | |
486 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 487 | import_rt_free(bgp, irt); |
488 | } | |
14c1a7bf | 489 | } |
490 | ||
128ea8ab | 491 | /* |
492 | * Create RT extended community automatically from passed information: | |
493 | * of the form AS:VNI. | |
494 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
495 | * the need is to get a RT value that will be unique across different | |
496 | * VNIs but the same across routers (in the same AS) for a particular | |
497 | * VNI. | |
498 | */ | |
c581d8b0 | 499 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 500 | { |
d62a17ae | 501 | struct ecommunity_val eval; |
502 | struct ecommunity *ecomadd; | |
128ea8ab | 503 | |
bf1061d8 VB |
504 | if (bgp->advertise_autort_rfc8365) |
505 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 506 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 507 | |
d62a17ae | 508 | ecomadd = ecommunity_new(); |
509 | ecommunity_add_val(ecomadd, &eval); | |
510 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 511 | } |
14c1a7bf | 512 | |
513 | /* | |
128ea8ab | 514 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
515 | * creation of a VNI. | |
516 | */ | |
d62a17ae | 517 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 518 | { |
d62a17ae | 519 | bgp_evpn_derive_auto_rd(bgp, vpn); |
520 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
521 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 522 | } |
523 | ||
1ec31309 | 524 | /* |
525 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
526 | */ | |
527 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
528 | { | |
529 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
530 | return; | |
531 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
532 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
533 | } | |
534 | ||
128ea8ab | 535 | /* |
536 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 537 | */ |
d62a17ae | 538 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
539 | struct prefix_evpn *p, | |
540 | struct in_addr remote_vtep_ip, int add, | |
d7c0a89a | 541 | uint8_t flags) |
d62a17ae | 542 | { |
543 | struct stream *s; | |
544 | int ipa_len; | |
545 | char buf1[ETHER_ADDR_STRLEN]; | |
546 | char buf2[INET6_ADDRSTRLEN]; | |
547 | char buf3[INET6_ADDRSTRLEN]; | |
548 | ||
549 | /* Check socket. */ | |
550 | if (!zclient || zclient->sock < 0) | |
551 | return 0; | |
552 | ||
553 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
554 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
555 | return 0; | |
556 | ||
557 | s = zclient->obuf; | |
558 | stream_reset(s); | |
559 | ||
996c9314 LB |
560 | zclient_create_header( |
561 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
562 | bgp->vrf_id); | |
d62a17ae | 563 | stream_putl(s, vpn->vni); |
3714a385 | 564 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 565 | /* IP address length and IP address, if any. */ |
3714a385 | 566 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 567 | stream_putl(s, 0); |
568 | else { | |
3714a385 | 569 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 570 | : IPV6_MAX_BYTELEN; |
571 | stream_putl(s, ipa_len); | |
3714a385 | 572 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 573 | } |
574 | stream_put_in_addr(s, &remote_vtep_ip); | |
575 | ||
ead40654 | 576 | /* TX flags - MAC sticky status and/or gateway mac */ |
d62a17ae | 577 | if (add) |
ead40654 | 578 | stream_putc(s, flags); |
d62a17ae | 579 | |
580 | stream_putw_at(s, 0, stream_get_endp(s)); | |
581 | ||
582 | if (bgp_debug_zebra(NULL)) | |
996c9314 LB |
583 | zlog_debug( |
584 | "Tx %s MACIP, VNI %u MAC %s IP %s (flags: 0x%x) remote VTEP %s", | |
585 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 586 | prefix_mac2str(&p->prefix.macip_addr.mac, |
587 | buf1, sizeof(buf1)), | |
588 | ipaddr2str(&p->prefix.macip_addr.ip, | |
589 | buf3, sizeof(buf3)), flags, | |
996c9314 LB |
590 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
591 | sizeof(buf2))); | |
d62a17ae | 592 | |
593 | return zclient_send_message(zclient); | |
7ef5a232 | 594 | } |
b18825eb | 595 | |
128ea8ab | 596 | /* |
597 | * Add (update) or delete remote VTEP from zebra. | |
598 | */ | |
d62a17ae | 599 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
600 | struct prefix_evpn *p, int add) | |
128ea8ab | 601 | { |
d62a17ae | 602 | struct stream *s; |
128ea8ab | 603 | |
d62a17ae | 604 | /* Check socket. */ |
605 | if (!zclient || zclient->sock < 0) | |
606 | return 0; | |
128ea8ab | 607 | |
d62a17ae | 608 | /* Don't try to register if Zebra doesn't know of this instance. */ |
609 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
610 | return 0; | |
128ea8ab | 611 | |
d62a17ae | 612 | s = zclient->obuf; |
613 | stream_reset(s); | |
128ea8ab | 614 | |
996c9314 LB |
615 | zclient_create_header( |
616 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
617 | bgp->vrf_id); | |
d62a17ae | 618 | stream_putl(s, vpn->vni); |
3714a385 | 619 | if (is_evpn_prefix_ipaddr_v4(p)) |
620 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
621 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
d62a17ae | 622 | zlog_err( |
623 | "Bad remote IP when trying to %s remote VTEP for VNI %u", | |
624 | add ? "ADD" : "DEL", vpn->vni); | |
625 | return -1; | |
626 | } | |
128ea8ab | 627 | |
d62a17ae | 628 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 629 | |
d62a17ae | 630 | if (bgp_debug_zebra(NULL)) |
631 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
632 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 633 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 634 | |
d62a17ae | 635 | return zclient_send_message(zclient); |
128ea8ab | 636 | } |
637 | ||
50f74cf1 | 638 | /* |
639 | * Build extended community for EVPN ES (type-4) route | |
640 | */ | |
641 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
642 | struct attr *attr) | |
643 | { | |
644 | struct ecommunity ecom_encap; | |
645 | struct ecommunity ecom_es_rt; | |
646 | struct ecommunity_val eval; | |
647 | struct ecommunity_val eval_es_rt; | |
648 | bgp_encap_types tnl_type; | |
649 | struct ethaddr mac; | |
650 | ||
651 | /* Encap */ | |
652 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
653 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
654 | encode_encap_extcomm(tnl_type, &eval); | |
655 | ecom_encap.size = 1; | |
656 | ecom_encap.val = (uint8_t *)eval.val; | |
657 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
658 | ||
659 | /* ES import RT */ | |
660 | memset(&mac, 0, sizeof(struct ethaddr)); | |
661 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
662 | es_get_system_mac(&es->esi, &mac); | |
663 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
664 | ecom_es_rt.size = 1; | |
665 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
666 | attr->ecommunity = | |
667 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
668 | ||
669 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
670 | } | |
671 | ||
342dd0c6 | 672 | /* |
673 | * Build extended communities for EVPN prefix route. | |
674 | */ | |
675 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
676 | struct attr *attr) | |
677 | { | |
678 | struct ecommunity ecom_encap; | |
679 | struct ecommunity ecom_rmac; | |
680 | struct ecommunity_val eval; | |
681 | struct ecommunity_val eval_rmac; | |
682 | bgp_encap_types tnl_type; | |
683 | struct listnode *node, *nnode; | |
684 | struct ecommunity *ecom; | |
685 | struct list *vrf_export_rtl = NULL; | |
686 | ||
687 | /* Encap */ | |
688 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
689 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
690 | encode_encap_extcomm(tnl_type, &eval); | |
691 | ecom_encap.size = 1; | |
d7c0a89a | 692 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 693 | |
694 | /* Add Encap */ | |
695 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
696 | ||
697 | /* Add the export RTs for L3VNI/VRF */ | |
698 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
699 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
700 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) | |
996c9314 LB |
701 | attr->ecommunity = |
702 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 703 | } |
704 | ||
705 | /* add the router mac extended community */ | |
706 | if (!is_zero_mac(&attr->rmac)) { | |
707 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
708 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
709 | ecom_rmac.size = 1; | |
710 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
711 | attr->ecommunity = |
712 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 713 | } |
714 | ||
715 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
716 | } | |
717 | ||
128ea8ab | 718 | /* |
1ec31309 | 719 | * Build extended communities for EVPN route. |
720 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
721 | * and ENCAP extended communities are applicable for all routes. | |
722 | * The default gateway extended community and MAC mobility (sticky) extended | |
723 | * community are added as needed based on passed settings - only for type-2 | |
724 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
725 | * added, if present, based on passed settings - only for non-link-local | |
726 | * type-2 routes. | |
128ea8ab | 727 | */ |
7ec156a9 | 728 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 729 | int add_l3_ecomm) |
128ea8ab | 730 | { |
d62a17ae | 731 | struct ecommunity ecom_encap; |
732 | struct ecommunity ecom_sticky; | |
ead40654 | 733 | struct ecommunity ecom_default_gw; |
bc59a672 | 734 | struct ecommunity ecom_rmac; |
d62a17ae | 735 | struct ecommunity_val eval; |
736 | struct ecommunity_val eval_sticky; | |
ead40654 | 737 | struct ecommunity_val eval_default_gw; |
bc59a672 | 738 | struct ecommunity_val eval_rmac; |
d62a17ae | 739 | bgp_encap_types tnl_type; |
740 | struct listnode *node, *nnode; | |
741 | struct ecommunity *ecom; | |
d7c0a89a | 742 | uint32_t seqnum; |
7a3e76f1 | 743 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 744 | |
d62a17ae | 745 | /* Encap */ |
746 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
747 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
748 | encode_encap_extcomm(tnl_type, &eval); | |
749 | ecom_encap.size = 1; | |
d7c0a89a | 750 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 751 | |
d62a17ae | 752 | /* Add Encap */ |
753 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 754 | |
7a3e76f1 | 755 | /* Add the export RTs for L2VNI */ |
d62a17ae | 756 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
757 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 758 | |
1ec31309 | 759 | /* Add the export RTs for L3VNI if told to - caller determines |
760 | * when this should be done. | |
523cafc4 | 761 | */ |
1ec31309 | 762 | if (add_l3_ecomm) { |
7ec156a9 MK |
763 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
764 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
765 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
766 | ecom)) | |
996c9314 LB |
767 | attr->ecommunity = ecommunity_merge( |
768 | attr->ecommunity, ecom); | |
7ec156a9 | 769 | } |
f1f8b53c | 770 | } |
7a3e76f1 | 771 | |
1ec31309 | 772 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 773 | if (attr->sticky) { |
774 | seqnum = 0; | |
775 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
776 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
777 | ecom_sticky.size = 1; | |
d7c0a89a | 778 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 779 | attr->ecommunity = |
780 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
781 | } | |
c85c03c7 | 782 | |
1ec31309 | 783 | /* Add RMAC, if told to. */ |
784 | if (add_l3_ecomm) { | |
bc59a672 MK |
785 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
786 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
787 | ecom_rmac.size = 1; | |
788 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
789 | attr->ecommunity = |
790 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
791 | } |
792 | ||
1ec31309 | 793 | /* Add default gateway, if needed. */ |
ead40654 MK |
794 | if (attr->default_gw) { |
795 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
796 | encode_default_gw_extcomm(&eval_default_gw); | |
797 | ecom_default_gw.size = 1; | |
798 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
799 | attr->ecommunity = |
800 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
801 | } |
802 | ||
d62a17ae | 803 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 804 | } |
805 | ||
806 | /* | |
807 | * Add MAC mobility extended community to attribute. | |
808 | */ | |
d7c0a89a | 809 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 810 | { |
811 | struct ecommunity ecom_tmp; | |
812 | struct ecommunity_val eval; | |
d7c0a89a | 813 | uint8_t *ecom_val_ptr; |
d62a17ae | 814 | int i; |
d7c0a89a | 815 | uint8_t *pnt; |
d62a17ae | 816 | int type = 0; |
817 | int sub_type = 0; | |
818 | ||
819 | /* Build MM */ | |
820 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
821 | ||
822 | /* Find current MM ecommunity */ | |
421bb26a | 823 | ecom_val_ptr = NULL; |
d62a17ae | 824 | |
825 | if (attr->ecommunity) { | |
826 | for (i = 0; i < attr->ecommunity->size; i++) { | |
827 | pnt = attr->ecommunity->val + (i * 8); | |
828 | type = *pnt++; | |
829 | sub_type = *pnt++; | |
830 | ||
831 | if (type == ECOMMUNITY_ENCODE_EVPN | |
832 | && sub_type | |
833 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
834 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
835 | + (i * 8)); | |
d62a17ae | 836 | break; |
837 | } | |
838 | } | |
839 | } | |
840 | ||
841 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
842 | if (ecom_val_ptr) { |
843 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 844 | } |
845 | /* Add MM to existing */ | |
846 | else { | |
847 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
848 | ecom_tmp.size = 1; | |
d7c0a89a | 849 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 850 | |
f9a78910 DS |
851 | if (attr->ecommunity) |
852 | attr->ecommunity = | |
853 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
854 | else | |
855 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 856 | } |
128ea8ab | 857 | } |
858 | ||
859 | /* Install EVPN route into zebra. */ | |
d62a17ae | 860 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
861 | struct prefix_evpn *p, | |
d7c0a89a | 862 | struct in_addr remote_vtep_ip, uint8_t flags) |
128ea8ab | 863 | { |
d62a17ae | 864 | int ret; |
128ea8ab | 865 | |
d62a17ae | 866 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
867 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
ead40654 | 868 | 1, flags); |
d62a17ae | 869 | else |
870 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 871 | |
d62a17ae | 872 | return ret; |
128ea8ab | 873 | } |
874 | ||
875 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 876 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
877 | struct prefix_evpn *p, | |
878 | struct in_addr remote_vtep_ip) | |
128ea8ab | 879 | { |
d62a17ae | 880 | int ret; |
128ea8ab | 881 | |
d62a17ae | 882 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
883 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
884 | 0, 0); | |
885 | else | |
886 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 887 | |
d62a17ae | 888 | return ret; |
128ea8ab | 889 | } |
890 | ||
891 | /* | |
892 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
893 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
894 | * from peers. | |
895 | */ | |
d62a17ae | 896 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
897 | struct bgp_node *rn, | |
898 | struct bgp_info *old_local) | |
128ea8ab | 899 | { |
d62a17ae | 900 | struct bgp_node *global_rn; |
901 | struct bgp_info *ri; | |
902 | afi_t afi = AFI_L2VPN; | |
903 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 904 | |
d62a17ae | 905 | /* Locate route node in the global EVPN routing table. Note that |
906 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
907 | * L3VPN routes. | |
908 | */ | |
909 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
910 | (struct prefix *)&rn->p, &vpn->prd); | |
911 | if (global_rn) { | |
912 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 913 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
128ea8ab | 914 | |
d62a17ae | 915 | /* Schedule for processing - withdraws to peers happen from |
916 | * this table. | |
917 | */ | |
918 | if (ri) | |
919 | bgp_process(bgp, global_rn, afi, safi); | |
920 | bgp_unlock_node(global_rn); | |
921 | } | |
128ea8ab | 922 | |
d62a17ae | 923 | /* Delete route entry in the VNI route table, caller to remove. */ |
924 | bgp_info_delete(rn, old_local); | |
128ea8ab | 925 | } |
926 | ||
50f74cf1 | 927 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
928 | { | |
929 | struct in_addr *ip; | |
930 | ||
931 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
932 | if (!ip) | |
933 | return NULL; | |
934 | ||
935 | ip->s_addr = vtep.s_addr; | |
936 | return ip; | |
937 | } | |
938 | ||
939 | static void es_vtep_free(struct in_addr *ip) | |
940 | { | |
941 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
942 | } | |
943 | ||
944 | /* check if VTEP is already part of the list */ | |
945 | static int is_vtep_present_in_list(struct list *list, | |
946 | struct in_addr vtep) | |
947 | { | |
948 | struct listnode *node = NULL; | |
949 | struct in_addr *tmp; | |
950 | ||
951 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
952 | if (tmp->s_addr == vtep.s_addr) | |
953 | return 1; | |
954 | } | |
955 | return 0; | |
956 | } | |
957 | ||
2bb9eff4 DS |
958 | /* |
959 | * Best path for ES route was changed, | |
960 | * update the list of VTEPs for this ES | |
961 | */ | |
50f74cf1 | 962 | static int evpn_es_install_vtep(struct bgp *bgp, |
963 | struct evpnes *es, | |
964 | struct prefix_evpn *p, | |
965 | struct in_addr rvtep) | |
966 | { | |
967 | struct in_addr *vtep_ip; | |
968 | ||
969 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
970 | return 0; | |
971 | ||
972 | ||
973 | vtep_ip = es_vtep_new(rvtep); | |
974 | if (vtep_ip) | |
975 | listnode_add_sort(es->vtep_list, vtep_ip); | |
976 | return 0; | |
977 | } | |
978 | ||
2bb9eff4 DS |
979 | /* |
980 | * Best path for ES route was changed, | |
981 | * update the list of VTEPs for this ES | |
982 | */ | |
50f74cf1 | 983 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
984 | struct evpnes *es, | |
985 | struct prefix_evpn *p, | |
986 | struct in_addr rvtep) | |
987 | { | |
988 | struct listnode *node, *nnode, *node_to_del = NULL; | |
989 | struct in_addr *tmp; | |
990 | ||
991 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
992 | if (tmp->s_addr == rvtep.s_addr) { | |
993 | es_vtep_free(tmp); | |
994 | node_to_del = node; | |
995 | } | |
996 | } | |
997 | ||
998 | if (node_to_del) | |
999 | list_delete_node(es->vtep_list, node_to_del); | |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * Calculate the best path for a ES(type-4) route. | |
1006 | */ | |
1007 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1008 | struct evpnes *es, | |
1009 | struct bgp_node *rn) | |
1010 | { | |
1011 | int ret = 0; | |
1012 | afi_t afi = AFI_L2VPN; | |
1013 | safi_t safi = SAFI_EVPN; | |
1014 | struct bgp_info *old_select; /* old best */ | |
1015 | struct bgp_info *new_select; /* new best */ | |
1016 | struct bgp_info_pair old_and_new; | |
1017 | ||
1018 | /* Compute the best path. */ | |
1019 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1020 | &old_and_new, afi, safi); | |
1021 | old_select = old_and_new.old; | |
1022 | new_select = old_and_new.new; | |
1023 | ||
2bb9eff4 DS |
1024 | /* |
1025 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1026 | * updated |
1027 | */ | |
1028 | if (old_select && old_select == new_select | |
1029 | && old_select->type == ZEBRA_ROUTE_BGP | |
1030 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1031 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1032 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1033 | && !bgp->addpath_tx_used[afi][safi]) { | |
1034 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1035 | ret = evpn_es_install_vtep(bgp, es, | |
1036 | (struct prefix_evpn *)&rn->p, | |
1037 | old_select->attr->nexthop); | |
1038 | } | |
1039 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1040 | bgp_zebra_clear_route_change_flags(rn); | |
1041 | return ret; | |
1042 | } | |
1043 | ||
1044 | /* If the user did a "clear" this flag will be set */ | |
1045 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1046 | ||
2bb9eff4 DS |
1047 | /* |
1048 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1049 | * into the zebra RIB. |
1050 | */ | |
1051 | if (old_select || new_select) | |
1052 | bgp_bump_version(rn); | |
1053 | ||
1054 | if (old_select) | |
1055 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1056 | if (new_select) { | |
1057 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1058 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1059 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1060 | } | |
1061 | ||
1062 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1063 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1064 | ret = evpn_es_install_vtep(bgp, es, | |
1065 | (struct prefix_evpn *)&rn->p, | |
1066 | new_select->attr->nexthop); | |
1067 | } else { | |
1068 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1069 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1070 | ret = evpn_es_uninstall_vtep( |
1071 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1072 | old_select->attr->nexthop); | |
50f74cf1 | 1073 | } |
1074 | ||
1075 | /* Clear any route change flags. */ | |
1076 | bgp_zebra_clear_route_change_flags(rn); | |
1077 | ||
1078 | /* Reap old select bgp_info, if it has been removed */ | |
1079 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1080 | bgp_info_reap(rn, old_select); | |
1081 | ||
1082 | return ret; | |
1083 | } | |
1084 | ||
128ea8ab | 1085 | /* |
1086 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1087 | * if appropriate. | |
1088 | */ | |
d62a17ae | 1089 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1090 | struct bgp_node *rn) | |
1091 | { | |
1092 | struct bgp_info *old_select, *new_select; | |
1093 | struct bgp_info_pair old_and_new; | |
1094 | afi_t afi = AFI_L2VPN; | |
1095 | safi_t safi = SAFI_EVPN; | |
1096 | int ret = 0; | |
d7c0a89a | 1097 | uint8_t flags = 0; |
d62a17ae | 1098 | |
1099 | /* Compute the best path. */ | |
1100 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1101 | afi, safi); | |
1102 | old_select = old_and_new.old; | |
1103 | new_select = old_and_new.new; | |
1104 | ||
1105 | /* If the best path hasn't changed - see if there is still something to | |
1106 | * update | |
1107 | * to zebra RIB. | |
1108 | */ | |
1109 | if (old_select && old_select == new_select | |
1110 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1111 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1112 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1113 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1114 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
1115 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1116 | if (old_select->attr->sticky) | |
1117 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1118 | if (old_select->attr->default_gw) | |
1119 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
996c9314 LB |
1120 | ret = evpn_zebra_install( |
1121 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
1122 | old_select->attr->nexthop, flags); | |
ead40654 | 1123 | } |
d62a17ae | 1124 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
1125 | bgp_zebra_clear_route_change_flags(rn); | |
1126 | return ret; | |
1127 | } | |
1128 | ||
1129 | /* If the user did a "clear" this flag will be set */ | |
1130 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1131 | ||
1132 | /* bestpath has changed; update relevant fields and install or uninstall | |
1133 | * into the zebra RIB. | |
1134 | */ | |
1135 | if (old_select || new_select) | |
1136 | bgp_bump_version(rn); | |
1137 | ||
1138 | if (old_select) | |
1139 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1140 | if (new_select) { | |
1141 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1142 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1143 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1144 | } | |
1145 | ||
1146 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1147 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1148 | flags = 0; |
1149 | if (new_select->attr->sticky) | |
1150 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1151 | if (new_select->attr->default_gw) | |
1152 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
d62a17ae | 1153 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
996c9314 | 1154 | new_select->attr->nexthop, flags); |
d62a17ae | 1155 | /* If an old best existed and it was a "local" route, the only |
1156 | * reason | |
1157 | * it would be supplanted is due to MAC mobility procedures. So, | |
1158 | * we | |
1159 | * need to do an implicit delete and withdraw that route from | |
1160 | * peers. | |
1161 | */ | |
1162 | if (old_select && old_select->peer == bgp->peer_self | |
1163 | && old_select->type == ZEBRA_ROUTE_BGP | |
1164 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1165 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1166 | } else { | |
1167 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1168 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1169 | ret = evpn_zebra_uninstall(bgp, vpn, |
1170 | (struct prefix_evpn *)&rn->p, | |
1171 | old_select->attr->nexthop); | |
1172 | } | |
1173 | ||
1174 | /* Clear any route change flags. */ | |
1175 | bgp_zebra_clear_route_change_flags(rn); | |
1176 | ||
1177 | /* Reap old select bgp_info, if it has been removed */ | |
1178 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1179 | bgp_info_reap(rn, old_select); | |
1180 | ||
1181 | return ret; | |
128ea8ab | 1182 | } |
1183 | ||
ead40654 MK |
1184 | /* |
1185 | * Return true if the local ri for this rn is of type gateway mac | |
1186 | */ | |
1187 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1188 | { | |
996c9314 LB |
1189 | struct bgp_info *tmp_ri = NULL; |
1190 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
1191 | |
1192 | local_ri = NULL; | |
1193 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1194 | if (tmp_ri->peer == bgp->peer_self | |
1195 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1196 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1197 | local_ri = tmp_ri; | |
1198 | } | |
1199 | ||
1200 | if (!local_ri) | |
1201 | return 0; | |
1202 | ||
1203 | return local_ri->attr->default_gw; | |
1204 | } | |
1205 | ||
c85c03c7 | 1206 | |
1207 | /* | |
1208 | * Return true if the local ri for this rn has sticky set | |
1209 | */ | |
d62a17ae | 1210 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1211 | { |
d62a17ae | 1212 | struct bgp_info *tmp_ri; |
1213 | struct bgp_info *local_ri; | |
c85c03c7 | 1214 | |
d62a17ae | 1215 | local_ri = NULL; |
1216 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1217 | if (tmp_ri->peer == bgp->peer_self | |
1218 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1219 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1220 | local_ri = tmp_ri; | |
1221 | } | |
c85c03c7 | 1222 | |
d62a17ae | 1223 | if (!local_ri) |
1224 | return 0; | |
c85c03c7 | 1225 | |
d62a17ae | 1226 | return local_ri->attr->sticky; |
c85c03c7 | 1227 | } |
1228 | ||
50f74cf1 | 1229 | /* |
1230 | * create or update EVPN type4 route entry. | |
1231 | * This could be in the ES table or the global table. | |
1232 | * TODO: handle remote ES (type4) routes as well | |
1233 | */ | |
1234 | static int update_evpn_type4_route_entry(struct bgp *bgp, | |
1235 | struct evpnes *es, | |
1236 | afi_t afi, safi_t safi, | |
1237 | struct bgp_node *rn, | |
1238 | struct attr *attr, | |
1239 | int add, | |
1240 | struct bgp_info **ri, | |
1241 | int *route_changed) | |
1242 | { | |
1243 | char buf[ESI_STR_LEN]; | |
1244 | char buf1[INET6_ADDRSTRLEN]; | |
1245 | struct bgp_info *tmp_ri = NULL; | |
1246 | struct bgp_info *local_ri = NULL; /* local route entry if any */ | |
1247 | struct bgp_info *remote_ri = NULL; /* remote route entry if any */ | |
1248 | struct attr *attr_new = NULL; | |
1249 | struct prefix_evpn *evp = NULL; | |
1250 | ||
1251 | *ri = NULL; | |
1252 | *route_changed = 1; | |
1253 | evp = (struct prefix_evpn *)&rn->p; | |
1254 | ||
1255 | /* locate the local and remote entries if any */ | |
1256 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1257 | if (tmp_ri->peer == bgp->peer_self && | |
1258 | tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1259 | tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1260 | local_ri = tmp_ri; | |
1261 | if (tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1262 | tmp_ri->sub_type == BGP_ROUTE_IMPORTED && | |
1263 | CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) | |
1264 | remote_ri = tmp_ri; | |
1265 | } | |
1266 | ||
1267 | /* we don't expect to see a remote_ri at this point. | |
1268 | * An ES route has esi + vtep_ip as the key, | |
1269 | * We shouldn't see the same route from any other vtep. | |
1270 | */ | |
1271 | if (remote_ri) { | |
1272 | zlog_err( | |
1273 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", | |
1274 | bgp->vrf_id, | |
1275 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1276 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1277 | return -1; | |
1278 | } | |
1279 | ||
1280 | if (!local_ri && !add) | |
1281 | return 0; | |
1282 | ||
1283 | /* create or update the entry */ | |
1284 | if (!local_ri) { | |
1285 | ||
1286 | /* Add or update attribute to hash */ | |
1287 | attr_new = bgp_attr_intern(attr); | |
1288 | ||
1289 | /* Create new route with its attribute. */ | |
1290 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, | |
1291 | 0, bgp->peer_self, attr_new, rn); | |
1292 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1293 | ||
1294 | /* add the newly created path to the route-node */ | |
1295 | bgp_info_add(rn, tmp_ri); | |
1296 | } else { | |
1297 | tmp_ri = local_ri; | |
1298 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1299 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1300 | *route_changed = 0; | |
1301 | else { | |
1302 | /* The attribute has changed. | |
1303 | * Add (or update) attribute to hash. */ | |
1304 | attr_new = bgp_attr_intern(attr); | |
1305 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1306 | ||
1307 | /* Restore route, if needed. */ | |
1308 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1309 | bgp_info_restore(rn, tmp_ri); | |
1310 | ||
1311 | /* Unintern existing, set to new. */ | |
1312 | bgp_attr_unintern(&tmp_ri->attr); | |
1313 | tmp_ri->attr = attr_new; | |
1314 | tmp_ri->uptime = bgp_clock(); | |
1315 | } | |
1316 | } | |
1317 | ||
1318 | /* Return back the route entry. */ | |
1319 | *ri = tmp_ri; | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | /* update evpn es (type-4) route */ | |
1324 | static int update_evpn_type4_route(struct bgp *bgp, | |
1325 | struct evpnes *es, | |
1326 | struct prefix_evpn *p) | |
1327 | { | |
1328 | int ret = 0; | |
1329 | int route_changed = 0; | |
1330 | char buf[ESI_STR_LEN]; | |
1331 | char buf1[INET6_ADDRSTRLEN]; | |
1332 | afi_t afi = AFI_L2VPN; | |
1333 | safi_t safi = SAFI_EVPN; | |
1334 | struct attr attr; | |
1335 | struct attr *attr_new = NULL; | |
1336 | struct bgp_node *rn = NULL; | |
1337 | struct bgp_info *ri = NULL; | |
1338 | ||
1339 | memset(&attr, 0, sizeof(struct attr)); | |
1340 | ||
1341 | /* Build path-attribute for this route. */ | |
1342 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1343 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1344 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1345 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1346 | ||
1347 | /* Set up extended community. */ | |
1348 | build_evpn_type4_route_extcomm(es, &attr); | |
1349 | ||
1350 | /* First, create (or fetch) route node within the ESI. */ | |
1351 | /* NOTE: There is no RD here. */ | |
1352 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1353 | ||
1354 | /* Create or update route entry. */ | |
1355 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, | |
1356 | &attr, 1, &ri, | |
1357 | &route_changed); | |
1358 | if (ret != 0) { | |
1359 | zlog_err("%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1360 | bgp->vrf_id, | |
1361 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1362 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1363 | } | |
1364 | ||
1365 | assert(ri); | |
1366 | attr_new = ri->attr; | |
1367 | ||
1368 | /* Perform route selection; | |
1369 | * this is just to set the flags correctly | |
1370 | * as local route in the ES always wins. | |
1371 | */ | |
1372 | evpn_es_route_select_install(bgp, es, rn); | |
1373 | bgp_unlock_node(rn); | |
1374 | ||
1375 | /* If this is a new route or some attribute has changed, export the | |
1376 | * route to the global table. The route will be advertised to peers | |
1377 | * from there. Note that this table is a 2-level tree (RD-level + | |
1378 | * Prefix-level) similar to L3VPN routes. | |
1379 | */ | |
1380 | if (route_changed) { | |
1381 | struct bgp_info *global_ri; | |
1382 | ||
1383 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1384 | (struct prefix *)p, &es->prd); | |
1385 | update_evpn_type4_route_entry(bgp, es, afi, safi, | |
1386 | rn, attr_new, | |
1387 | 1, &global_ri, | |
1388 | &route_changed); | |
1389 | ||
1390 | /* Schedule for processing and unlock node. */ | |
1391 | bgp_process(bgp, rn, afi, safi); | |
1392 | bgp_unlock_node(rn); | |
1393 | } | |
1394 | ||
1395 | /* Unintern temporary. */ | |
1396 | aspath_unintern(&attr.aspath); | |
1397 | return 0; | |
1398 | } | |
1399 | ||
342dd0c6 | 1400 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1401 | struct bgp *bgp_vrf, afi_t afi, | |
1402 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1403 | struct attr *attr, int *route_changed) |
342dd0c6 | 1404 | { |
1405 | struct attr *attr_new = NULL; | |
1406 | struct bgp_info *ri = NULL; | |
1407 | mpls_label_t label = MPLS_INVALID_LABEL; | |
1408 | struct bgp_info *local_ri = NULL; | |
1409 | struct bgp_info *tmp_ri = NULL; | |
1410 | ||
5424b7ba | 1411 | *route_changed = 0; |
342dd0c6 | 1412 | /* locate the local route entry if any */ |
1413 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1414 | if (tmp_ri->peer == bgp_def->peer_self | |
1415 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1416 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1417 | local_ri = tmp_ri; | |
1418 | } | |
1419 | ||
2bb9eff4 DS |
1420 | /* |
1421 | * create a new route entry if one doesnt exist. | |
1422 | * Otherwise see if route attr has changed | |
523cafc4 | 1423 | */ |
342dd0c6 | 1424 | if (!local_ri) { |
1425 | ||
5424b7ba MK |
1426 | /* route has changed as this is the first entry */ |
1427 | *route_changed = 1; | |
1428 | ||
342dd0c6 | 1429 | /* Add (or update) attribute to hash. */ |
1430 | attr_new = bgp_attr_intern(attr); | |
1431 | ||
1432 | /* create the route info from attribute */ | |
1433 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1434 | bgp_def->peer_self, attr_new, rn); | |
1435 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1436 | ||
b57ba6d2 | 1437 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1438 | bgp_info_extra_get(ri); |
1439 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1440 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1441 | ri->extra->num_labels = 1; | |
342dd0c6 | 1442 | |
1443 | /* add the route entry to route node*/ | |
1444 | bgp_info_add(rn, ri); | |
1445 | } else { | |
1446 | ||
1447 | tmp_ri = local_ri; | |
1448 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1449 | |
1450 | /* attribute changed */ | |
1451 | *route_changed = 1; | |
1452 | ||
342dd0c6 | 1453 | /* The attribute has changed. */ |
1454 | /* Add (or update) attribute to hash. */ | |
1455 | attr_new = bgp_attr_intern(attr); | |
1456 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1457 | ||
1458 | /* Restore route, if needed. */ | |
1459 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1460 | bgp_info_restore(rn, tmp_ri); | |
1461 | ||
1462 | /* Unintern existing, set to new. */ | |
1463 | bgp_attr_unintern(&tmp_ri->attr); | |
1464 | tmp_ri->attr = attr_new; | |
1465 | tmp_ri->uptime = bgp_clock(); | |
1466 | } | |
1467 | } | |
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1472 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1473 | struct attr *src_attr) | |
342dd0c6 | 1474 | { |
1475 | afi_t afi = AFI_L2VPN; | |
1476 | safi_t safi = SAFI_EVPN; | |
1477 | struct attr attr; | |
1478 | struct bgp_node *rn = NULL; | |
1479 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1480 | int route_changed = 0; |
342dd0c6 | 1481 | |
1482 | bgp_def = bgp_get_default(); | |
1483 | if (!bgp_def) | |
faafdfa8 | 1484 | return 0; |
342dd0c6 | 1485 | |
2f69f6d3 | 1486 | /* Build path attribute for this route - use the source attr, if |
1487 | * present, else treat as locally originated. | |
1488 | */ | |
1489 | if (src_attr) | |
1490 | bgp_attr_dup(&attr, src_attr); | |
1491 | else { | |
1492 | memset(&attr, 0, sizeof(struct attr)); | |
1493 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1494 | } | |
1495 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1496 | attr.nexthop = bgp_vrf->originator_ip; |
1497 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1498 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1499 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1500 | ||
1501 | /* Setup RT and encap extended community */ | |
1502 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1503 | ||
1504 | /* get the route node in global table */ | |
1505 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1506 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1507 | assert(rn); |
1508 | ||
1509 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1510 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1511 | &route_changed); | |
342dd0c6 | 1512 | |
1513 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1514 | if (route_changed) { |
1515 | bgp_process(bgp_def, rn, afi, safi); | |
1516 | bgp_unlock_node(rn); | |
1517 | } | |
342dd0c6 | 1518 | |
1519 | /* uninten temporary */ | |
5ee65f6f | 1520 | if (!src_attr) |
1521 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1522 | return 0; |
1523 | } | |
1524 | ||
128ea8ab | 1525 | /* |
1526 | * Create or update EVPN route entry. This could be in the VNI route table | |
1527 | * or the global route table. | |
1528 | */ | |
d62a17ae | 1529 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1530 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1531 | struct attr *attr, int add, int vni_table, | |
d7c0a89a | 1532 | struct bgp_info **ri, uint8_t flags) |
d62a17ae | 1533 | { |
1534 | struct bgp_info *tmp_ri; | |
1535 | struct bgp_info *local_ri, *remote_ri; | |
1536 | struct attr *attr_new; | |
b57ba6d2 | 1537 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1538 | uint32_t num_labels = 1; |
d62a17ae | 1539 | int route_change = 1; |
d7c0a89a | 1540 | uint8_t sticky = 0; |
b57ba6d2 | 1541 | struct prefix_evpn *evp; |
d62a17ae | 1542 | |
1543 | *ri = NULL; | |
b57ba6d2 MK |
1544 | evp = (struct prefix_evpn *)&rn->p; |
1545 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1546 | |
1547 | /* See if this is an update of an existing route, or a new add. Also, | |
1548 | * identify if already known from remote, and if so, the one with the | |
1549 | * highest sequence number; this is only when adding to the VNI routing | |
1550 | * table. | |
1551 | */ | |
1552 | local_ri = remote_ri = NULL; | |
1553 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1554 | if (tmp_ri->peer == bgp->peer_self | |
1555 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1556 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1557 | local_ri = tmp_ri; | |
1558 | if (vni_table) { | |
1559 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1560 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1561 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { |
1562 | if (!remote_ri) | |
1563 | remote_ri = tmp_ri; | |
1564 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1565 | > mac_mobility_seqnum(remote_ri->attr)) | |
1566 | remote_ri = tmp_ri; | |
1567 | } | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | /* If route doesn't exist already, create a new one, if told to. | |
1572 | * Otherwise act based on whether the attributes of the route have | |
1573 | * changed or not. | |
1574 | */ | |
1575 | if (!local_ri && !add) | |
1576 | return 0; | |
1577 | ||
1578 | if (!local_ri) { | |
1579 | /* When learnt locally for the first time but already known from | |
1580 | * remote, we have to initiate appropriate MAC mobility steps. | |
50f74cf1 | 1581 | * This is applicable when updating the VNI routing table. |
1a98c087 MK |
1582 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1583 | * SVI) advertised in EVPN. | |
1584 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1585 | */ |
ead40654 | 1586 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) { |
d7c0a89a | 1587 | uint32_t cur_seqnum; |
d62a17ae | 1588 | |
1589 | /* Add MM extended community to route. */ | |
1590 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1591 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1592 | } | |
1593 | ||
1594 | /* Add (or update) attribute to hash. */ | |
1595 | attr_new = bgp_attr_intern(attr); | |
1596 | ||
1597 | /* Extract MAC mobility sequence number, if any. */ | |
1598 | attr_new->mm_seqnum = | |
1599 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1600 | attr_new->sticky = sticky; | |
1601 | ||
1602 | /* Create new route with its attribute. */ | |
1603 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1604 | bgp->peer_self, attr_new, rn); | |
1605 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1606 | bgp_info_extra_get(tmp_ri); | |
1607 | ||
1608 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1609 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1610 | |
1611 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1612 | * Only attach second label if we are advertising two labels for | |
1613 | * type-2 routes. | |
1614 | */ | |
996c9314 LB |
1615 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1616 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1617 | vni_t l3vni; |
1618 | ||
1619 | l3vni = bgpevpn_get_l3vni(vpn); | |
1620 | if (l3vni) { | |
1621 | vni2label(l3vni, &label[1]); | |
1622 | num_labels++; | |
1623 | } | |
1624 | } | |
d62a17ae | 1625 | |
b57ba6d2 MK |
1626 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1627 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1628 | bgp_info_add(rn, tmp_ri); |
1629 | } else { | |
1630 | tmp_ri = local_ri; | |
1631 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1632 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1633 | route_change = 0; | |
1634 | else { | |
c48d9f5f MK |
1635 | /* |
1636 | * The attributes have changed, type-2 routes needs to | |
1637 | * be advertised with right labels. | |
1638 | */ | |
1639 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1640 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1641 | && CHECK_FLAG(vpn->flags, | |
1642 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1643 | vni_t l3vni; |
1644 | ||
1645 | l3vni = bgpevpn_get_l3vni(vpn); | |
1646 | if (l3vni) { | |
1647 | vni2label(l3vni, &label[1]); | |
1648 | num_labels++; | |
1649 | } | |
1650 | } | |
1651 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1652 | tmp_ri->extra->num_labels = num_labels; | |
1653 | ||
d62a17ae | 1654 | /* The attribute has changed. */ |
1655 | /* Add (or update) attribute to hash. */ | |
1656 | attr_new = bgp_attr_intern(attr); | |
1657 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1658 | ||
1659 | /* Restore route, if needed. */ | |
1660 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1661 | bgp_info_restore(rn, tmp_ri); | |
1662 | ||
1663 | /* Unintern existing, set to new. */ | |
1664 | bgp_attr_unintern(&tmp_ri->attr); | |
1665 | tmp_ri->attr = attr_new; | |
1666 | tmp_ri->uptime = bgp_clock(); | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | /* Return back the route entry. */ | |
1671 | *ri = tmp_ri; | |
1672 | return route_change; | |
128ea8ab | 1673 | } |
1674 | ||
1675 | /* | |
1676 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1677 | * and schedule for processing. | |
1678 | */ | |
d62a17ae | 1679 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
d7c0a89a | 1680 | struct prefix_evpn *p, uint8_t flags) |
128ea8ab | 1681 | { |
d62a17ae | 1682 | struct bgp_node *rn; |
1683 | struct attr attr; | |
1684 | struct attr *attr_new; | |
1ec31309 | 1685 | int add_l3_ecomm = 0; |
d62a17ae | 1686 | struct bgp_info *ri; |
1687 | afi_t afi = AFI_L2VPN; | |
1688 | safi_t safi = SAFI_EVPN; | |
1689 | int route_change; | |
128ea8ab | 1690 | |
d62a17ae | 1691 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1692 | |
d62a17ae | 1693 | /* Build path-attribute for this route. */ |
1694 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1695 | attr.nexthop = vpn->originator_ip; | |
1696 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1697 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1698 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1699 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
be41eb68 MK |
1700 | |
1701 | /* PMSI is only needed for type-3 routes */ | |
1702 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1703 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1704 | ||
1ec31309 | 1705 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1706 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1707 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1708 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1709 | |
1ec31309 | 1710 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1711 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1712 | * these routes. | |
1713 | */ | |
1714 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1715 | (is_evpn_prefix_ipaddr_v4(p) || |
1716 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
1ec31309 | 1717 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) |
1718 | add_l3_ecomm = 1; | |
1719 | ||
1720 | /* Set up extended community. */ | |
1721 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1722 | |
d62a17ae | 1723 | /* First, create (or fetch) route node within the VNI. */ |
1724 | /* NOTE: There is no RD here. */ | |
1725 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1726 | |
d62a17ae | 1727 | /* Create or update route entry. */ |
1728 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1729 | 1, 1, &ri, flags); |
d62a17ae | 1730 | assert(ri); |
1731 | attr_new = ri->attr; | |
128ea8ab | 1732 | |
d62a17ae | 1733 | /* Perform route selection; this is just to set the flags correctly |
1734 | * as local route in the VNI always wins. | |
1735 | */ | |
1736 | evpn_route_select_install(bgp, vpn, rn); | |
1737 | bgp_unlock_node(rn); | |
128ea8ab | 1738 | |
d62a17ae | 1739 | /* If this is a new route or some attribute has changed, export the |
1740 | * route to the global table. The route will be advertised to peers | |
1741 | * from there. Note that this table is a 2-level tree (RD-level + | |
1742 | * Prefix-level) similar to L3VPN routes. | |
1743 | */ | |
1744 | if (route_change) { | |
1745 | struct bgp_info *global_ri; | |
128ea8ab | 1746 | |
d62a17ae | 1747 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1748 | (struct prefix *)p, &vpn->prd); | |
1749 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1750 | &global_ri, flags); |
128ea8ab | 1751 | |
d62a17ae | 1752 | /* Schedule for processing and unlock node. */ |
1753 | bgp_process(bgp, rn, afi, safi); | |
1754 | bgp_unlock_node(rn); | |
1755 | } | |
128ea8ab | 1756 | |
d62a17ae | 1757 | /* Unintern temporary. */ |
1758 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1759 | |
d62a17ae | 1760 | return 0; |
128ea8ab | 1761 | } |
1762 | ||
50f74cf1 | 1763 | /* |
1764 | * Delete EVPN route entry. | |
1765 | * The entry can be in ESI/VNI table or the global table. | |
1766 | */ | |
1767 | static void delete_evpn_route_entry(struct bgp *bgp, | |
1768 | afi_t afi, safi_t safi, | |
1769 | struct bgp_node *rn, | |
1770 | struct bgp_info **ri) | |
342dd0c6 | 1771 | { |
50f74cf1 | 1772 | struct bgp_info *tmp_ri; |
342dd0c6 | 1773 | |
1774 | *ri = NULL; | |
1775 | ||
50f74cf1 | 1776 | /* Now, find matching route. */ |
342dd0c6 | 1777 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) |
50f74cf1 | 1778 | if (tmp_ri->peer == bgp->peer_self |
342dd0c6 | 1779 | && tmp_ri->type == ZEBRA_ROUTE_BGP |
1780 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1781 | break; | |
1782 | ||
1783 | *ri = tmp_ri; | |
1784 | ||
1785 | /* Mark route for delete. */ | |
1786 | if (tmp_ri) | |
1787 | bgp_info_delete(rn, tmp_ri); | |
1788 | } | |
1789 | ||
50f74cf1 | 1790 | |
1791 | ||
1792 | /* Delete EVPN ES (type-4) route */ | |
1793 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1794 | struct evpnes *es, | |
1795 | struct prefix_evpn *p) | |
1796 | { | |
1797 | afi_t afi = AFI_L2VPN; | |
1798 | safi_t safi = SAFI_EVPN; | |
1799 | struct bgp_info *ri; | |
1800 | struct bgp_node *rn = NULL; /* rn in esi table */ | |
1801 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1802 | ||
1803 | /* First, locate the route node within the ESI. | |
1804 | * If it doesn't exist, ther is nothing to do. | |
1805 | * Note: there is no RD here. | |
1806 | */ | |
1807 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1808 | if (!rn) |
50f74cf1 | 1809 | return 0; |
1810 | ||
1811 | /* Next, locate route node in the global EVPN routing table. | |
1812 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1813 | */ | |
1814 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1815 | (struct prefix *)p, &es->prd); | |
1816 | if (global_rn) { | |
1817 | ||
1818 | /* Delete route entry in the global EVPN table. */ | |
1819 | delete_evpn_route_entry(bgp, afi, safi, | |
1820 | global_rn, &ri); | |
1821 | ||
1822 | /* Schedule for processing - withdraws to peers happen from | |
1823 | * this table. | |
1824 | */ | |
1825 | if (ri) | |
1826 | bgp_process(bgp, global_rn, afi, safi); | |
1827 | bgp_unlock_node(global_rn); | |
1828 | } | |
1829 | ||
1830 | /* | |
1831 | * Delete route entry in the ESI route table. | |
1832 | * This can just be removed. | |
1833 | */ | |
1834 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); | |
1835 | if (ri) | |
1836 | bgp_info_reap(rn, ri); | |
1837 | bgp_unlock_node(rn); | |
1838 | return 0; | |
1839 | } | |
1840 | ||
342dd0c6 | 1841 | /* Delete EVPN type5 route */ |
996c9314 | 1842 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1843 | { |
1844 | afi_t afi = AFI_L2VPN; | |
1845 | safi_t safi = SAFI_EVPN; | |
1846 | struct bgp_node *rn = NULL; | |
1847 | struct bgp_info *ri = NULL; | |
1848 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1849 | ||
1850 | bgp_def = bgp_get_default(); | |
1851 | if (!bgp_def) | |
faafdfa8 | 1852 | return 0; |
342dd0c6 | 1853 | |
1854 | /* locate the global route entry for this type-5 prefix */ | |
1855 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1856 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1857 | if (!rn) | |
1858 | return 0; | |
1859 | ||
50f74cf1 | 1860 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &ri); |
342dd0c6 | 1861 | if (ri) |
1862 | bgp_process(bgp_def, rn, afi, safi); | |
1863 | bgp_unlock_node(rn); | |
1864 | return 0; | |
1865 | } | |
1866 | ||
128ea8ab | 1867 | /* |
1868 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1869 | * schedule for processing. | |
1870 | */ | |
d62a17ae | 1871 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1872 | struct prefix_evpn *p) | |
1873 | { | |
1874 | struct bgp_node *rn, *global_rn; | |
1875 | struct bgp_info *ri; | |
1876 | afi_t afi = AFI_L2VPN; | |
1877 | safi_t safi = SAFI_EVPN; | |
1878 | ||
1879 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1880 | * there | |
1881 | * is nothing further to do. | |
1882 | */ | |
1883 | /* NOTE: There is no RD here. */ | |
1884 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1885 | if (!rn) | |
1886 | return 0; | |
1887 | ||
1888 | /* Next, locate route node in the global EVPN routing table. Note that | |
1889 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1890 | * L3VPN routes. | |
1891 | */ | |
1892 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1893 | (struct prefix *)p, &vpn->prd); | |
1894 | if (global_rn) { | |
1895 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 1896 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
d62a17ae | 1897 | |
1898 | /* Schedule for processing - withdraws to peers happen from | |
1899 | * this table. | |
1900 | */ | |
1901 | if (ri) | |
1902 | bgp_process(bgp, global_rn, afi, safi); | |
1903 | bgp_unlock_node(global_rn); | |
1904 | } | |
1905 | ||
1906 | /* Delete route entry in the VNI route table. This can just be removed. | |
1907 | */ | |
50f74cf1 | 1908 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 1909 | if (ri) |
1910 | bgp_info_reap(rn, ri); | |
1911 | bgp_unlock_node(rn); | |
1912 | ||
1913 | return 0; | |
128ea8ab | 1914 | } |
1915 | ||
1916 | /* | |
1917 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1918 | * be scheduled for advertise to peers. | |
1919 | */ | |
d62a17ae | 1920 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1921 | { | |
1922 | afi_t afi; | |
1923 | safi_t safi; | |
1924 | struct bgp_node *rn; | |
1925 | struct bgp_info *ri; | |
1926 | struct attr attr; | |
1927 | struct attr attr_sticky; | |
ead40654 | 1928 | struct attr attr_def_gw; |
1ec31309 | 1929 | struct attr attr_ip6_ll; |
d62a17ae | 1930 | struct attr *attr_new; |
1ec31309 | 1931 | int add_l3_ecomm = 0; |
d62a17ae | 1932 | |
1933 | afi = AFI_L2VPN; | |
1934 | safi = SAFI_EVPN; | |
1935 | memset(&attr, 0, sizeof(struct attr)); | |
1936 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
ead40654 | 1937 | memset(&attr_def_gw, 0, sizeof(struct attr)); |
1ec31309 | 1938 | memset(&attr_ip6_ll, 0, sizeof(struct attr)); |
d62a17ae | 1939 | |
1ec31309 | 1940 | /* Build path-attribute - multiple type-2 routes for this VNI will share |
1941 | * the same path attribute, but we need separate structures for sticky | |
1942 | * MACs, default gateway and IPv6 link-local addresses (no L3 RT/RMAC). | |
d62a17ae | 1943 | */ |
1944 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1945 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
ead40654 | 1946 | bgp_attr_default_set(&attr_def_gw, BGP_ORIGIN_IGP); |
d62a17ae | 1947 | attr.nexthop = vpn->originator_ip; |
1948 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1949 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1950 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1951 | attr_sticky.nexthop = vpn->originator_ip; |
1952 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1953 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1954 | attr_sticky.sticky = 1; | |
bc59a672 | 1955 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
ead40654 MK |
1956 | attr_def_gw.nexthop = vpn->originator_ip; |
1957 | attr_def_gw.mp_nexthop_global_in = vpn->originator_ip; | |
1958 | attr_def_gw.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1959 | attr_def_gw.default_gw = 1; | |
1960 | bgpevpn_get_rmac(vpn, &attr_def_gw.rmac); | |
1ec31309 | 1961 | bgp_attr_default_set(&attr_ip6_ll, BGP_ORIGIN_IGP); |
1962 | attr_ip6_ll.nexthop = vpn->originator_ip; | |
1963 | attr_ip6_ll.mp_nexthop_global_in = vpn->originator_ip; | |
1964 | attr_ip6_ll.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1965 | ||
1966 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local attributes if | |
1967 | * using L3 VNI for type-2 routes also. | |
1968 | */ | |
1969 | if (CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1970 | add_l3_ecomm = 1; | |
1971 | ||
1972 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1973 | build_evpn_route_extcomm(vpn, &attr_sticky, add_l3_ecomm); | |
1974 | build_evpn_route_extcomm(vpn, &attr_def_gw, add_l3_ecomm); | |
1975 | build_evpn_route_extcomm(vpn, &attr_ip6_ll, 0); | |
d62a17ae | 1976 | |
1977 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1978 | * routes updated, update corresponding entry in the global table too. | |
1979 | */ | |
1980 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1981 | rn = bgp_route_next(rn)) { | |
1982 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1983 | struct bgp_node *rd_rn; | |
1984 | struct bgp_info *global_ri; | |
1985 | ||
1986 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1987 | continue; | |
1988 | ||
3714a385 | 1989 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1990 | IN6_IS_ADDR_LINKLOCAL(&evp->prefix.macip_addr.ip.ipaddr_v6)) | |
1ec31309 | 1991 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
1992 | &attr_ip6_ll, 0, 1, &ri, 0); | |
1993 | else { | |
7ec156a9 MK |
1994 | if (evpn_route_is_sticky(bgp, rn)) |
1995 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1996 | &attr_sticky, 0, 1, &ri, |
1997 | 0); | |
ead40654 MK |
1998 | else if (evpn_route_is_def_gw(bgp, rn)) |
1999 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
2000 | &attr_def_gw, 0, 1, &ri, |
2001 | 0); | |
7ec156a9 MK |
2002 | else |
2003 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
2004 | &attr, 0, 1, &ri, 0); | |
7ec156a9 | 2005 | } |
d62a17ae | 2006 | |
2007 | /* If a local route exists for this prefix, we need to update | |
2008 | * the global routing table too. | |
2009 | */ | |
2010 | if (!ri) | |
2011 | continue; | |
2012 | ||
2013 | /* Perform route selection; this is just to set the flags | |
2014 | * correctly | |
2015 | * as local route in the VNI always wins. | |
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, | |
1a98c087 | 2026 | 0, &global_ri, 0); |
d62a17ae | 2027 | |
2028 | /* Schedule for processing and unlock node. */ | |
2029 | bgp_process(bgp, rd_rn, afi, safi); | |
2030 | bgp_unlock_node(rd_rn); | |
2031 | } | |
2032 | ||
2033 | /* Unintern temporary. */ | |
2034 | aspath_unintern(&attr.aspath); | |
2035 | aspath_unintern(&attr_sticky.aspath); | |
ead40654 | 2036 | aspath_unintern(&attr_def_gw.aspath); |
1ec31309 | 2037 | aspath_unintern(&attr_ip6_ll.aspath); |
d62a17ae | 2038 | |
2039 | return 0; | |
128ea8ab | 2040 | } |
2041 | ||
2042 | /* | |
2043 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2044 | * global routing table. These are also scheduled for withdraw from peers. | |
2045 | */ | |
d62a17ae | 2046 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2047 | { |
d62a17ae | 2048 | afi_t afi; |
2049 | safi_t safi; | |
2050 | struct bgp_node *rdrn, *rn; | |
2051 | struct bgp_table *table; | |
2052 | struct bgp_info *ri; | |
128ea8ab | 2053 | |
d62a17ae | 2054 | afi = AFI_L2VPN; |
2055 | safi = SAFI_EVPN; | |
128ea8ab | 2056 | |
d62a17ae | 2057 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2058 | if (rdrn && rdrn->info) { | |
2059 | table = (struct bgp_table *)rdrn->info; | |
2060 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2061 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2062 | |
d62a17ae | 2063 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2064 | continue; | |
128ea8ab | 2065 | |
50f74cf1 | 2066 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 2067 | if (ri) |
2068 | bgp_process(bgp, rn, afi, safi); | |
2069 | } | |
2070 | } | |
128ea8ab | 2071 | |
d62a17ae | 2072 | /* Unlock RD node. */ |
2073 | if (rdrn) | |
2074 | bgp_unlock_node(rdrn); | |
128ea8ab | 2075 | |
d62a17ae | 2076 | return 0; |
128ea8ab | 2077 | } |
2078 | ||
2079 | /* | |
2080 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2081 | * table as well as the per-VNI route table. | |
2082 | */ | |
d62a17ae | 2083 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2084 | { |
d62a17ae | 2085 | afi_t afi; |
2086 | safi_t safi; | |
2087 | struct bgp_node *rn; | |
2088 | struct bgp_info *ri; | |
128ea8ab | 2089 | |
d62a17ae | 2090 | afi = AFI_L2VPN; |
2091 | safi = SAFI_EVPN; | |
128ea8ab | 2092 | |
d62a17ae | 2093 | /* First, walk the global route table for this VNI's type-2 local |
2094 | * routes. | |
2095 | * EVPN routes are a 2-level table, first get the RD table. | |
2096 | */ | |
2097 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2098 | |
d62a17ae | 2099 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2100 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2101 | rn = bgp_route_next(rn)) { | |
2102 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2103 | |
d62a17ae | 2104 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2105 | continue; | |
128ea8ab | 2106 | |
50f74cf1 | 2107 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
128ea8ab | 2108 | |
d62a17ae | 2109 | /* Route entry in local table gets deleted immediately. */ |
2110 | if (ri) | |
2111 | bgp_info_reap(rn, ri); | |
2112 | } | |
128ea8ab | 2113 | |
d62a17ae | 2114 | return 0; |
128ea8ab | 2115 | } |
2116 | ||
50f74cf1 | 2117 | /* |
2118 | * Delete all routes in per ES route-table | |
2119 | */ | |
2120 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2121 | { | |
2122 | struct bgp_node *rn; | |
2123 | struct bgp_info *ri, *nextri; | |
2124 | ||
2125 | /* Walk this ES's route table and delete all routes. */ | |
2126 | for (rn = bgp_table_top(es->route_table); rn; | |
2127 | rn = bgp_route_next(rn)) { | |
2128 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2129 | ri = nextri) { | |
2130 | bgp_info_delete(rn, ri); | |
2131 | bgp_info_reap(rn, ri); | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | return 0; | |
2136 | } | |
2137 | ||
128ea8ab | 2138 | /* |
2139 | * Delete all routes in the per-VNI route table. | |
2140 | */ | |
d62a17ae | 2141 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2142 | { |
d62a17ae | 2143 | struct bgp_node *rn; |
2144 | struct bgp_info *ri, *nextri; | |
128ea8ab | 2145 | |
d62a17ae | 2146 | /* Walk this VNI's route table and delete all routes. */ |
2147 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2148 | rn = bgp_route_next(rn)) { | |
2149 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2150 | ri = nextri) { | |
2151 | bgp_info_delete(rn, ri); | |
2152 | bgp_info_reap(rn, ri); | |
2153 | } | |
2154 | } | |
128ea8ab | 2155 | |
d62a17ae | 2156 | return 0; |
128ea8ab | 2157 | } |
2158 | ||
2159 | /* | |
2160 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2161 | * export RT getting modified or change to tunnel IP. Note that these | |
2162 | * situations need the route in the per-VNI table as well as the global | |
2163 | * table to be updated (as attributes change). | |
2164 | */ | |
d62a17ae | 2165 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2166 | { |
d62a17ae | 2167 | int ret; |
2168 | struct prefix_evpn p; | |
128ea8ab | 2169 | |
d62a17ae | 2170 | /* Update and advertise the type-3 route (only one) followed by the |
2171 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2172 | */ | |
2173 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2174 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
2175 | if (ret) | |
2176 | return ret; | |
128ea8ab | 2177 | |
d62a17ae | 2178 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2179 | } |
2180 | ||
50f74cf1 | 2181 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2182 | * Also remove all other routes from the per ES table. | |
2183 | * Invoked when ES is deleted. | |
2184 | */ | |
2185 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2186 | { | |
2187 | int ret; | |
2188 | char buf[ESI_STR_LEN]; | |
2189 | struct prefix_evpn p; | |
2190 | ||
2191 | /* Delete and withdraw locally learnt ES route */ | |
2192 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2193 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2194 | if (ret) { | |
2195 | zlog_err( | |
2196 | "%u failed to delete type-4 route for ESI %s", | |
2197 | bgp->vrf_id, | |
2198 | esi_to_str(&es->esi, buf, sizeof(buf))); | |
2199 | } | |
2200 | ||
2201 | /* Delete all routes from per ES table */ | |
2202 | return delete_all_es_routes(bgp, es); | |
2203 | } | |
2204 | ||
128ea8ab | 2205 | /* |
2206 | * Delete (and withdraw) local routes for specified VNI from the global | |
2207 | * table and per-VNI table. After this, remove all other routes from | |
2208 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2209 | * (advertise-all-vni) being disabled. | |
2210 | */ | |
d62a17ae | 2211 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2212 | { |
d62a17ae | 2213 | int ret; |
2214 | struct prefix_evpn p; | |
128ea8ab | 2215 | |
d62a17ae | 2216 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2217 | * followed by type-3 routes (only one) - for this VNI. | |
2218 | */ | |
2219 | ret = delete_all_type2_routes(bgp, vpn); | |
2220 | if (ret) | |
2221 | return ret; | |
128ea8ab | 2222 | |
d62a17ae | 2223 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2224 | ret = delete_evpn_route(bgp, vpn, &p); | |
2225 | if (ret) | |
2226 | return ret; | |
128ea8ab | 2227 | |
d62a17ae | 2228 | /* Delete all routes from the per-VNI table. */ |
2229 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2230 | } |
2231 | ||
2232 | /* | |
d1911c26 | 2233 | * There is a tunnel endpoint IP address change for this VNI, delete |
2234 | * prior type-3 route (if needed) and update. | |
2235 | * Note: Route re-advertisement happens elsewhere after other processing | |
2236 | * other changes. | |
128ea8ab | 2237 | */ |
d62a17ae | 2238 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2239 | struct in_addr originator_ip) | |
128ea8ab | 2240 | { |
d62a17ae | 2241 | struct prefix_evpn p; |
128ea8ab | 2242 | |
ddd16ed5 MK |
2243 | /* If VNI is not live, we only need to update the originator ip */ |
2244 | if (!is_vni_live(vpn)) { | |
2245 | vpn->originator_ip = originator_ip; | |
2246 | return 0; | |
2247 | } | |
2248 | ||
db0e1937 MK |
2249 | /* Update the tunnel-ip hash */ |
2250 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2251 | bgp_tip_add(bgp, &originator_ip); | |
2252 | ||
2253 | /* filter routes as martian nexthop db has changed */ | |
2254 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2255 | ||
d62a17ae | 2256 | /* Need to withdraw type-3 route as the originator IP is part |
2257 | * of the key. | |
2258 | */ | |
2259 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2260 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2261 | |
d62a17ae | 2262 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2263 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2264 | return 0; |
128ea8ab | 2265 | } |
2266 | ||
50f74cf1 | 2267 | /* Install EVPN route entry in ES */ |
2268 | static int install_evpn_route_entry_in_es(struct bgp *bgp, | |
2269 | struct evpnes *es, | |
2270 | struct prefix_evpn *p, | |
2271 | struct bgp_info *parent_ri) | |
2272 | { | |
2273 | int ret = 0; | |
2274 | struct bgp_node *rn = NULL; | |
2275 | struct bgp_info *ri = NULL; | |
2276 | struct attr *attr_new = NULL; | |
2277 | ||
2278 | /* Create (or fetch) route within the VNI. | |
2279 | * NOTE: There is no RD here. | |
2280 | */ | |
2281 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2282 | ||
2283 | /* Check if route entry is already present. */ | |
2284 | for (ri = rn->info; ri; ri = ri->next) | |
2285 | if (ri->extra && | |
2286 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2287 | break; | |
2288 | ||
2289 | if (!ri) { | |
2290 | /* Add (or update) attribute to hash. */ | |
2291 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2292 | ||
2293 | /* Create new route with its attribute. */ | |
2294 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, | |
2295 | parent_ri->peer, attr_new, rn); | |
2296 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2297 | bgp_info_extra_get(ri); | |
2298 | ri->extra->parent = parent_ri; | |
2299 | bgp_info_add(rn, ri); | |
2300 | } else { | |
2301 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2302 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2303 | bgp_unlock_node(rn); | |
2304 | return 0; | |
2305 | } | |
2306 | /* The attribute has changed. */ | |
2307 | /* Add (or update) attribute to hash. */ | |
2308 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2309 | ||
2310 | /* Restore route, if needed. */ | |
2311 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2312 | bgp_info_restore(rn, ri); | |
2313 | ||
2314 | /* Mark if nexthop has changed. */ | |
2315 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2316 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2317 | ||
2318 | /* Unintern existing, set to new. */ | |
2319 | bgp_attr_unintern(&ri->attr); | |
2320 | ri->attr = attr_new; | |
2321 | ri->uptime = bgp_clock(); | |
2322 | } | |
2323 | ||
2324 | /* Perform route selection and update zebra, if required. */ | |
2325 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2326 | return ret; | |
2327 | } | |
2328 | ||
d3135ba3 | 2329 | /* |
2330 | * Install route entry into the VRF routing table and invoke route selection. | |
2331 | */ | |
2332 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2333 | struct prefix_evpn *evp, | |
2334 | struct bgp_info *parent_ri) | |
2335 | { | |
2336 | struct bgp_node *rn; | |
2337 | struct bgp_info *ri; | |
1ec31309 | 2338 | struct attr attr; |
d3135ba3 | 2339 | struct attr *attr_new; |
c4edf708 | 2340 | int ret = 0; |
d3135ba3 | 2341 | struct prefix p; |
2342 | struct prefix *pp = &p; | |
2343 | afi_t afi = 0; | |
2344 | safi_t safi = 0; | |
1eb88002 MK |
2345 | char buf[PREFIX_STRLEN]; |
2346 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2347 | |
2348 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2349 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2350 | |
1eb88002 | 2351 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2352 | zlog_debug( |
2353 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2354 | prefix2str(evp, buf, sizeof(buf)), | |
2355 | prefix2str(pp, buf1, sizeof(buf)), | |
2356 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2357 | } |
2358 | ||
d3135ba3 | 2359 | /* Create (or fetch) route within the VRF. */ |
2360 | /* NOTE: There is no RD here. */ | |
3714a385 | 2361 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2362 | afi = AFI_IP; |
2363 | safi = SAFI_UNICAST; | |
2364 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2365 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2366 | afi = AFI_IP6; |
2367 | safi = SAFI_UNICAST; | |
2368 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2369 | } else | |
2370 | return 0; | |
2371 | ||
1ec31309 | 2372 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2373 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2374 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2375 | * address for the rest of the code to flow through. In the case of IPv4, | |
2376 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2377 | */ |
2378 | bgp_attr_dup(&attr, parent_ri->attr); | |
2379 | if (afi == AFI_IP6) | |
2380 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2381 | else |
2382 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2383 | |
d3135ba3 | 2384 | /* Check if route entry is already present. */ |
2385 | for (ri = rn->info; ri; ri = ri->next) | |
2386 | if (ri->extra | |
2387 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2388 | break; | |
2389 | ||
2390 | if (!ri) { | |
2391 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2392 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2393 | |
2394 | /* Create new route with its attribute. */ | |
90f4f482 | 2395 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 2396 | parent_ri->peer, attr_new, rn); |
2397 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2398 | bgp_info_extra_get(ri); | |
528cd74f | 2399 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2400 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2401 | if (parent_ri->extra) { |
d3135ba3 | 2402 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2403 | sizeof(ri->extra->label)); |
2404 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2405 | } | |
d3135ba3 | 2406 | bgp_info_add(rn, ri); |
2407 | } else { | |
1ec31309 | 2408 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 2409 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
2410 | bgp_unlock_node(rn); | |
2411 | return 0; | |
2412 | } | |
2413 | /* The attribute has changed. */ | |
2414 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2415 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2416 | |
2417 | /* Restore route, if needed. */ | |
2418 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2419 | bgp_info_restore(rn, ri); | |
2420 | ||
2421 | /* Mark if nexthop has changed. */ | |
1ec31309 | 2422 | if ((afi == AFI_IP && |
2423 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
2424 | (afi == AFI_IP6 && | |
2425 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
2426 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 2427 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
2428 | ||
2429 | /* Unintern existing, set to new. */ | |
2430 | bgp_attr_unintern(&ri->attr); | |
2431 | ri->attr = attr_new; | |
2432 | ri->uptime = bgp_clock(); | |
2433 | } | |
2434 | ||
2435 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2436 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2437 | |
2438 | return ret; | |
2439 | } | |
2440 | ||
128ea8ab | 2441 | /* |
2442 | * Install route entry into the VNI routing table and invoke route selection. | |
2443 | */ | |
d62a17ae | 2444 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2445 | struct prefix_evpn *p, | |
2446 | struct bgp_info *parent_ri) | |
2447 | { | |
2448 | struct bgp_node *rn; | |
2449 | struct bgp_info *ri; | |
2450 | struct attr *attr_new; | |
2451 | int ret; | |
2452 | ||
2453 | /* Create (or fetch) route within the VNI. */ | |
2454 | /* NOTE: There is no RD here. */ | |
2455 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2456 | ||
2457 | /* Check if route entry is already present. */ | |
2458 | for (ri = rn->info; ri; ri = ri->next) | |
2459 | if (ri->extra | |
2460 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2461 | break; | |
2462 | ||
2463 | if (!ri) { | |
2464 | /* Add (or update) attribute to hash. */ | |
2465 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2466 | ||
2467 | /* Create new route with its attribute. */ | |
90f4f482 | 2468 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 2469 | parent_ri->peer, attr_new, rn); |
2470 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2471 | bgp_info_extra_get(ri); | |
528cd74f | 2472 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2473 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2474 | if (parent_ri->extra) { |
d62a17ae | 2475 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2476 | sizeof(ri->extra->label)); |
2477 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2478 | } | |
d62a17ae | 2479 | bgp_info_add(rn, ri); |
2480 | } else { | |
2481 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2482 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2483 | bgp_unlock_node(rn); | |
2484 | return 0; | |
2485 | } | |
2486 | /* The attribute has changed. */ | |
2487 | /* Add (or update) attribute to hash. */ | |
2488 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2489 | ||
50f74cf1 | 2490 | /* Restore route, if needed. */ |
2491 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2492 | bgp_info_restore(rn, ri); | |
2493 | ||
2494 | /* Mark if nexthop has changed. */ | |
2495 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2496 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2497 | ||
2498 | /* Unintern existing, set to new. */ | |
2499 | bgp_attr_unintern(&ri->attr); | |
2500 | ri->attr = attr_new; | |
2501 | ri->uptime = bgp_clock(); | |
2502 | } | |
2503 | ||
2504 | /* Perform route selection and update zebra, if required. */ | |
2505 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2506 | ||
2507 | return ret; | |
2508 | } | |
2509 | ||
2510 | /* Uninstall EVPN route entry from ES route table */ | |
2511 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, | |
2512 | struct evpnes *es, | |
2513 | struct prefix_evpn *p, | |
2514 | struct bgp_info *parent_ri) | |
2515 | { | |
2516 | int ret; | |
2517 | struct bgp_node *rn; | |
2518 | struct bgp_info *ri; | |
2519 | ||
2520 | if (!es->route_table) | |
2521 | return 0; | |
2522 | ||
2523 | /* Locate route within the ESI. | |
2524 | * NOTE: There is no RD here. | |
2525 | */ | |
2526 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2527 | if (!rn) | |
2528 | return 0; | |
2529 | ||
2530 | /* Find matching route entry. */ | |
2531 | for (ri = rn->info; ri; ri = ri->next) | |
2532 | if (ri->extra && | |
2533 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2534 | break; | |
d62a17ae | 2535 | |
50f74cf1 | 2536 | if (!ri) |
2537 | return 0; | |
d62a17ae | 2538 | |
50f74cf1 | 2539 | /* Mark entry for deletion */ |
2540 | bgp_info_delete(rn, ri); | |
d62a17ae | 2541 | |
2542 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2543 | ret = evpn_es_route_select_install(bgp, es, rn); |
2544 | ||
2545 | /* Unlock route node. */ | |
2546 | bgp_unlock_node(rn); | |
d62a17ae | 2547 | |
2548 | return ret; | |
128ea8ab | 2549 | } |
2550 | ||
d3135ba3 | 2551 | /* |
2552 | * Uninstall route entry from the VRF routing table and send message | |
2553 | * to zebra, if appropriate. | |
2554 | */ | |
2555 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2556 | struct prefix_evpn *evp, | |
2557 | struct bgp_info *parent_ri) | |
2558 | { | |
2559 | struct bgp_node *rn; | |
2560 | struct bgp_info *ri; | |
c4edf708 | 2561 | int ret = 0; |
d3135ba3 | 2562 | struct prefix p; |
2563 | struct prefix *pp = &p; | |
2564 | afi_t afi = 0; | |
2565 | safi_t safi = 0; | |
1eb88002 MK |
2566 | char buf[PREFIX_STRLEN]; |
2567 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2568 | |
2569 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2570 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2571 | |
1eb88002 | 2572 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2573 | zlog_debug( |
2574 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2575 | prefix2str(evp, buf, sizeof(buf)), | |
2576 | prefix2str(pp, buf1, sizeof(buf)), | |
2577 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2578 | } |
2579 | ||
d3135ba3 | 2580 | /* Locate route within the VRF. */ |
2581 | /* NOTE: There is no RD here. */ | |
3714a385 | 2582 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2583 | afi = AFI_IP; |
2584 | safi = SAFI_UNICAST; | |
2585 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2586 | } else { | |
2587 | afi = AFI_IP6; | |
2588 | safi = SAFI_UNICAST; | |
2589 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2590 | } | |
2591 | ||
2592 | if (!rn) | |
2593 | return 0; | |
2594 | ||
2595 | /* Find matching route entry. */ | |
2596 | for (ri = rn->info; ri; ri = ri->next) | |
2597 | if (ri->extra | |
2598 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2599 | break; | |
2600 | ||
2601 | if (!ri) | |
2602 | return 0; | |
2603 | ||
2604 | /* Mark entry for deletion */ | |
2605 | bgp_info_delete(rn, ri); | |
2606 | ||
2607 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2608 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2609 | |
2610 | /* Unlock route node. */ | |
2611 | bgp_unlock_node(rn); | |
2612 | ||
2613 | return ret; | |
2614 | } | |
2615 | ||
128ea8ab | 2616 | /* |
2617 | * Uninstall route entry from the VNI routing table and send message | |
2618 | * to zebra, if appropriate. | |
2619 | */ | |
d62a17ae | 2620 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2621 | struct prefix_evpn *p, | |
2622 | struct bgp_info *parent_ri) | |
128ea8ab | 2623 | { |
d62a17ae | 2624 | struct bgp_node *rn; |
2625 | struct bgp_info *ri; | |
2626 | int ret; | |
128ea8ab | 2627 | |
d62a17ae | 2628 | /* Locate route within the VNI. */ |
2629 | /* NOTE: There is no RD here. */ | |
2630 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2631 | if (!rn) | |
2632 | return 0; | |
128ea8ab | 2633 | |
d62a17ae | 2634 | /* Find matching route entry. */ |
2635 | for (ri = rn->info; ri; ri = ri->next) | |
2636 | if (ri->extra | |
2637 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2638 | break; | |
128ea8ab | 2639 | |
d62a17ae | 2640 | if (!ri) |
2641 | return 0; | |
128ea8ab | 2642 | |
d62a17ae | 2643 | /* Mark entry for deletion */ |
2644 | bgp_info_delete(rn, ri); | |
128ea8ab | 2645 | |
d62a17ae | 2646 | /* Perform route selection and update zebra, if required. */ |
2647 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2648 | |
d62a17ae | 2649 | /* Unlock route node. */ |
2650 | bgp_unlock_node(rn); | |
128ea8ab | 2651 | |
d62a17ae | 2652 | return ret; |
128ea8ab | 2653 | } |
2654 | ||
50f74cf1 | 2655 | /* |
2656 | * Given a prefix, see if it belongs to ES. | |
2657 | */ | |
2658 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2659 | struct evpnes *es) | |
2660 | { | |
2661 | /* if not an ES route return false */ | |
2662 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2663 | return 0; | |
2664 | ||
2665 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2666 | return 1; | |
2667 | ||
2668 | return 0; | |
2669 | } | |
2670 | ||
5ba238b7 MK |
2671 | /* |
2672 | * Given a route entry and a VRF, see if this route entry should be | |
2673 | * imported into the VRF i.e., RTs match. | |
2674 | */ | |
996c9314 | 2675 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2676 | { |
2677 | struct attr *attr = ri->attr; | |
2678 | struct ecommunity *ecom; | |
2679 | int i; | |
2680 | ||
2681 | assert(attr); | |
2682 | /* Route should have valid RT to be even considered. */ | |
2683 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2684 | return 0; | |
2685 | ||
2686 | ecom = attr->ecommunity; | |
2687 | if (!ecom || !ecom->size) | |
2688 | return 0; | |
2689 | ||
2690 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2691 | * matches, we're done. | |
2692 | */ | |
2693 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2694 | uint8_t *pnt; |
2695 | uint8_t type, sub_type; | |
5ba238b7 MK |
2696 | struct ecommunity_val *eval; |
2697 | struct ecommunity_val eval_tmp; | |
2698 | struct vrf_irt_node *irt; | |
2699 | ||
2700 | /* Only deal with RTs */ | |
2701 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2702 | eval = (struct ecommunity_val *)(ecom->val | |
2703 | + (i * ECOMMUNITY_SIZE)); | |
2704 | type = *pnt++; | |
2705 | sub_type = *pnt++; | |
2706 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2707 | continue; | |
2708 | ||
2709 | /* See if this RT matches specified VNIs import RTs */ | |
2710 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2711 | if (irt) |
5ba238b7 MK |
2712 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2713 | return 1; | |
2714 | ||
2715 | /* Also check for non-exact match. In this, we mask out the AS | |
2716 | * and | |
2717 | * only check on the local-admin sub-field. This is to | |
2718 | * facilitate using | |
2719 | * VNI as the RT for EBGP peering too. | |
2720 | */ | |
2721 | irt = NULL; | |
2722 | if (type == ECOMMUNITY_ENCODE_AS | |
2723 | || type == ECOMMUNITY_ENCODE_AS4 | |
2724 | || type == ECOMMUNITY_ENCODE_IP) { | |
2725 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2726 | mask_ecom_global_admin(&eval_tmp, eval); | |
2727 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2728 | } | |
5d9cbca2 | 2729 | if (irt) |
5ba238b7 MK |
2730 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2731 | return 1; | |
2732 | } | |
2733 | ||
2734 | return 0; | |
2735 | } | |
2736 | ||
128ea8ab | 2737 | /* |
2738 | * Given a route entry and a VNI, see if this route entry should be | |
2739 | * imported into the VNI i.e., RTs match. | |
2740 | */ | |
d62a17ae | 2741 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2742 | struct bgp_info *ri) | |
2743 | { | |
2744 | struct attr *attr = ri->attr; | |
2745 | struct ecommunity *ecom; | |
2746 | int i; | |
2747 | ||
2748 | assert(attr); | |
2749 | /* Route should have valid RT to be even considered. */ | |
2750 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2751 | return 0; | |
2752 | ||
2753 | ecom = attr->ecommunity; | |
2754 | if (!ecom || !ecom->size) | |
2755 | return 0; | |
2756 | ||
2757 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2758 | * matches, we're done. | |
2759 | */ | |
2760 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2761 | uint8_t *pnt; |
2762 | uint8_t type, sub_type; | |
d62a17ae | 2763 | struct ecommunity_val *eval; |
2764 | struct ecommunity_val eval_tmp; | |
2765 | struct irt_node *irt; | |
2766 | ||
2767 | /* Only deal with RTs */ | |
2768 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2769 | eval = (struct ecommunity_val *)(ecom->val | |
2770 | + (i * ECOMMUNITY_SIZE)); | |
2771 | type = *pnt++; | |
2772 | sub_type = *pnt++; | |
2773 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2774 | continue; | |
2775 | ||
2776 | /* See if this RT matches specified VNIs import RTs */ | |
2777 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2778 | if (irt) |
d62a17ae | 2779 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2780 | return 1; | |
2781 | ||
2782 | /* Also check for non-exact match. In this, we mask out the AS | |
2783 | * and | |
2784 | * only check on the local-admin sub-field. This is to | |
2785 | * facilitate using | |
2786 | * VNI as the RT for EBGP peering too. | |
2787 | */ | |
2788 | irt = NULL; | |
2789 | if (type == ECOMMUNITY_ENCODE_AS | |
2790 | || type == ECOMMUNITY_ENCODE_AS4 | |
2791 | || type == ECOMMUNITY_ENCODE_IP) { | |
2792 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2793 | mask_ecom_global_admin(&eval_tmp, eval); | |
2794 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2795 | } | |
b1ab0dfe | 2796 | if (irt) |
d62a17ae | 2797 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2798 | return 1; | |
2799 | } | |
2800 | ||
2801 | return 0; | |
128ea8ab | 2802 | } |
2803 | ||
50f74cf1 | 2804 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2805 | struct evpnes *es, | |
2806 | int install) | |
2807 | { | |
2808 | int ret; | |
2809 | afi_t afi; | |
2810 | safi_t safi; | |
2811 | char buf[PREFIX_STRLEN]; | |
2812 | char buf1[ESI_STR_LEN]; | |
2813 | struct bgp_node *rd_rn, *rn; | |
2814 | struct bgp_table *table; | |
2815 | struct bgp_info *ri; | |
2816 | ||
2817 | afi = AFI_L2VPN; | |
2818 | safi = SAFI_EVPN; | |
2819 | ||
2bb9eff4 DS |
2820 | /* |
2821 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2822 | * imported into this VRF. Note that we need to loop through all global |
2823 | * routes to determine which route matches the import rt on vrf | |
2824 | */ | |
2825 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2826 | rd_rn = bgp_route_next(rd_rn)) { | |
2827 | table = (struct bgp_table *)(rd_rn->info); | |
2828 | if (!table) | |
2829 | continue; | |
2830 | ||
2831 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2832 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2833 | ||
2834 | for (ri = rn->info; ri; ri = ri->next) { | |
2bb9eff4 DS |
2835 | /* |
2836 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2837 | * this ES. |
2838 | */ | |
2839 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2840 | && ri->type == ZEBRA_ROUTE_BGP | |
2841 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2842 | continue; | |
2843 | ||
2bb9eff4 DS |
2844 | if (!is_prefix_matching_for_es(evp, es)) |
2845 | continue; | |
50f74cf1 | 2846 | |
2bb9eff4 DS |
2847 | if (install) |
2848 | ret = install_evpn_route_entry_in_es( | |
2849 | bgp, es, evp, ri); | |
2850 | else | |
2851 | ret = uninstall_evpn_route_entry_in_es( | |
2852 | bgp, es, evp, ri); | |
2853 | ||
2854 | if (ret) { | |
2855 | zlog_err( | |
2856 | "Failed to %s EVPN %s route in ESI %s", | |
2857 | install ? "install" | |
2858 | : "uninstall", | |
2859 | prefix2str(evp, buf, | |
2860 | sizeof(buf)), | |
2861 | esi_to_str(&es->esi, buf1, | |
2862 | sizeof(buf1))); | |
2863 | return ret; | |
50f74cf1 | 2864 | } |
2865 | } | |
2866 | } | |
2867 | } | |
2868 | return 0; | |
2869 | } | |
2870 | ||
5ba238b7 MK |
2871 | /* |
2872 | * Install or uninstall mac-ip routes are appropriate for this | |
2873 | * particular VRF. | |
2874 | */ | |
996c9314 | 2875 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2876 | { |
2877 | afi_t afi; | |
2878 | safi_t safi; | |
2879 | struct bgp_node *rd_rn, *rn; | |
2880 | struct bgp_table *table; | |
2881 | struct bgp_info *ri; | |
2882 | int ret; | |
2883 | char buf[PREFIX_STRLEN]; | |
2884 | struct bgp *bgp_def = NULL; | |
2885 | ||
2886 | afi = AFI_L2VPN; | |
2887 | safi = SAFI_EVPN; | |
2888 | bgp_def = bgp_get_default(); | |
2889 | if (!bgp_def) | |
2890 | return -1; | |
2891 | ||
2892 | /* Walk entire global routing table and evaluate routes which could be | |
2893 | * imported into this VRF. Note that we need to loop through all global | |
2894 | * routes to determine which route matches the import rt on vrf | |
2895 | */ | |
2896 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2897 | rd_rn = bgp_route_next(rd_rn)) { | |
2898 | table = (struct bgp_table *)(rd_rn->info); | |
2899 | if (!table) | |
2900 | continue; | |
2901 | ||
2902 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2903 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2904 | ||
1eb88002 | 2905 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2906 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2907 | || evp->prefix.route_type | |
2908 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2909 | continue; |
2910 | ||
1eb88002 | 2911 | /* if not a mac+ip route skip this route */ |
3714a385 | 2912 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2913 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2914 | continue; |
2915 | ||
5ba238b7 MK |
2916 | for (ri = rn->info; ri; ri = ri->next) { |
2917 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2918 | * this VRF. |
2919 | */ | |
5ba238b7 MK |
2920 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2921 | && ri->type == ZEBRA_ROUTE_BGP | |
2922 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2923 | continue; | |
2924 | ||
2925 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2926 | if (install) | |
996c9314 | 2927 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2928 | bgp_vrf, evp, ri); |
2929 | else | |
996c9314 | 2930 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2931 | bgp_vrf, evp, ri); |
2932 | ||
2933 | if (ret) { | |
2934 | zlog_err( | |
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) { | |
3007 | zlog_err( | |
3008 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3009 | bgp->vrf_id, | |
3010 | install ? "install" | |
3011 | : "uninstall", | |
3012 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3013 | ? "MACIP" | |
3014 | : "IMET", | |
3015 | vpn->vni); | |
3016 | return ret; | |
3017 | } | |
3018 | } | |
3019 | } | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | return 0; | |
128ea8ab | 3024 | } |
3025 | ||
50f74cf1 | 3026 | /* Install any existing remote ES routes applicable for this ES into its routing |
3027 | * table. This is invoked when ES comes up. | |
3028 | */ | |
3029 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3030 | { | |
3031 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3032 | } | |
3033 | ||
3034 | ||
5ba238b7 | 3035 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3036 | * is invoked upon l3vni-add or l3vni import rt change |
3037 | */ | |
5ba238b7 MK |
3038 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3039 | { | |
3040 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3041 | return 0; | |
3042 | } | |
3043 | ||
128ea8ab | 3044 | /* |
3045 | * Install any existing remote routes applicable for this VNI into its | |
3046 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3047 | * RT is changed. | |
3048 | */ | |
d62a17ae | 3049 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3050 | { |
d62a17ae | 3051 | int ret; |
128ea8ab | 3052 | |
d62a17ae | 3053 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3054 | * for this VNI. | |
3055 | */ | |
3056 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3057 | 1); | |
3058 | if (ret) | |
3059 | return ret; | |
128ea8ab | 3060 | |
d62a17ae | 3061 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3062 | 1); | |
128ea8ab | 3063 | } |
3064 | ||
5ba238b7 MK |
3065 | /* uninstall routes from l3vni vrf. */ |
3066 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3067 | { | |
3068 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3069 | return 0; | |
3070 | } | |
3071 | ||
90e60aa7 | 3072 | /* |
3073 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3074 | * this is invoked is upon an import RT change. | |
3075 | */ | |
d62a17ae | 3076 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3077 | { |
d62a17ae | 3078 | int ret; |
90e60aa7 | 3079 | |
d62a17ae | 3080 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3081 | * applicable | |
3082 | * for this VNI. | |
3083 | */ | |
3084 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3085 | 0); | |
3086 | if (ret) | |
3087 | return ret; | |
90e60aa7 | 3088 | |
d62a17ae | 3089 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3090 | 0); | |
90e60aa7 | 3091 | } |
3092 | ||
50f74cf1 | 3093 | /* Install or unistall route in ES */ |
3094 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3095 | afi_t afi, safi_t safi, | |
3096 | struct prefix_evpn *evp, | |
3097 | struct bgp_info *ri, | |
3098 | int install) | |
3099 | { | |
3100 | int ret = 0; | |
3101 | char buf[ESI_STR_LEN]; | |
3102 | ||
3103 | if (install) | |
3104 | ret = install_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3105 | else | |
3106 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3107 | ||
3108 | if (ret) { | |
3109 | zlog_err("%u: Failed to %s EVPN %s route in ESI %s", | |
3110 | bgp->vrf_id, install ? "install" : "uninstall", | |
3111 | "ES", | |
3112 | esi_to_str(&evp->prefix.es_addr.esi, buf, | |
3113 | sizeof(buf))); | |
3114 | return ret; | |
3115 | } | |
3116 | return 0; | |
3117 | } | |
3118 | ||
d3135ba3 | 3119 | /* |
3120 | * Install or uninstall route in matching VRFs (list). | |
3121 | */ | |
3122 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3123 | safi_t safi, struct prefix_evpn *evp, | |
3124 | struct bgp_info *ri, | |
3125 | struct list *vrfs, int install) | |
3126 | { | |
3127 | char buf[PREFIX2STR_BUFFER]; | |
3128 | struct bgp *bgp_vrf; | |
3129 | struct listnode *node, *nnode; | |
3130 | ||
90264d64 | 3131 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3132 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3133 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3134 | return 0; |
3135 | ||
90264d64 | 3136 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3137 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3138 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3139 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3140 | return 0; |
3141 | ||
d3135ba3 | 3142 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3143 | int ret; | |
3144 | ||
3145 | if (install) | |
996c9314 | 3146 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 3147 | else |
996c9314 LB |
3148 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3149 | ri); | |
d3135ba3 | 3150 | |
3151 | if (ret) { | |
3152 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
3153 | bgp_def->vrf_id, | |
3154 | install ? "install" : "uninstall", | |
3155 | prefix2str(evp, buf, sizeof(buf)), | |
3156 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
3157 | return ret; | |
3158 | } | |
3159 | } | |
3160 | ||
3161 | return 0; | |
3162 | } | |
3163 | ||
128ea8ab | 3164 | /* |
3165 | * Install or uninstall route in matching VNIs (list). | |
3166 | */ | |
d62a17ae | 3167 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3168 | safi_t safi, struct prefix_evpn *evp, | |
3169 | struct bgp_info *ri, | |
3170 | struct list *vnis, int install) | |
128ea8ab | 3171 | { |
d62a17ae | 3172 | struct bgpevpn *vpn; |
3173 | struct listnode *node, *nnode; | |
128ea8ab | 3174 | |
d62a17ae | 3175 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3176 | int ret; | |
128ea8ab | 3177 | |
d62a17ae | 3178 | if (!is_vni_live(vpn)) |
3179 | continue; | |
128ea8ab | 3180 | |
d62a17ae | 3181 | if (install) |
3182 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
3183 | else | |
3184 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 3185 | |
d62a17ae | 3186 | if (ret) { |
3187 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
3188 | bgp->vrf_id, install ? "install" : "uninstall", | |
3189 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3190 | ? "MACIP" | |
3191 | : "IMET", | |
3192 | vpn->vni); | |
3193 | return ret; | |
3194 | } | |
3195 | } | |
128ea8ab | 3196 | |
d62a17ae | 3197 | return 0; |
128ea8ab | 3198 | } |
3199 | ||
3200 | /* | |
50f74cf1 | 3201 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3202 | */ |
d62a17ae | 3203 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3204 | struct prefix *p, struct bgp_info *ri, | |
3205 | int import) | |
3206 | { | |
3207 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3208 | struct attr *attr = ri->attr; | |
3209 | struct ecommunity *ecom; | |
3210 | int i; | |
3211 | ||
3212 | assert(attr); | |
3213 | ||
50f74cf1 | 3214 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3215 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3216 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3217 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3218 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3219 | return 0; |
3220 | ||
3221 | /* If we don't have Route Target, nothing much to do. */ | |
3222 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3223 | return 0; | |
3224 | ||
3225 | ecom = attr->ecommunity; | |
3226 | if (!ecom || !ecom->size) | |
3227 | return -1; | |
3228 | ||
50f74cf1 | 3229 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3230 | * attached to the route */ | |
d62a17ae | 3231 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3232 | uint8_t *pnt; |
3233 | uint8_t type, sub_type; | |
d62a17ae | 3234 | struct ecommunity_val *eval; |
3235 | struct ecommunity_val eval_tmp; | |
996c9314 | 3236 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3237 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3238 | struct evpnes *es; |
d62a17ae | 3239 | |
3240 | /* Only deal with RTs */ | |
3241 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3242 | eval = (struct ecommunity_val *)(ecom->val | |
3243 | + (i * ECOMMUNITY_SIZE)); | |
3244 | type = *pnt++; | |
3245 | sub_type = *pnt++; | |
3246 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3247 | continue; | |
3248 | ||
50f74cf1 | 3249 | /* |
3250 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3251 | * IMET route is imported into VNI table. | |
3252 | * prefix routes are imported into VRF table. | |
523cafc4 | 3253 | */ |
50f74cf1 | 3254 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3255 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3256 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3257 | |
50f74cf1 | 3258 | irt = lookup_import_rt(bgp, eval); |
3259 | if (irt) | |
3260 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3261 | evp, ri, | |
3262 | irt->vnis, | |
3263 | import); | |
3264 | ||
3265 | vrf_irt = lookup_vrf_import_rt(eval); | |
3266 | if (vrf_irt) | |
3267 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3268 | evp, ri, | |
3269 | vrf_irt->vrfs, | |
3270 | import); | |
3271 | ||
3272 | /* Also check for non-exact match. | |
3273 | * In this, we mask out the AS and | |
3274 | * only check on the local-admin sub-field. | |
3275 | * This is to facilitate using | |
3276 | * VNI as the RT for EBGP peering too. | |
3277 | */ | |
3278 | irt = NULL; | |
3279 | vrf_irt = NULL; | |
3280 | if (type == ECOMMUNITY_ENCODE_AS | |
3281 | || type == ECOMMUNITY_ENCODE_AS4 | |
3282 | || type == ECOMMUNITY_ENCODE_IP) { | |
3283 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3284 | mask_ecom_global_admin(&eval_tmp, eval); | |
3285 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3286 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3287 | } | |
3288 | ||
3289 | if (irt) | |
3290 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3291 | evp, ri, | |
3292 | irt->vnis, | |
3293 | import); | |
3294 | if (vrf_irt) | |
3295 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3296 | evp, ri, | |
3297 | vrf_irt->vrfs, | |
3298 | import); | |
3299 | } | |
3300 | ||
3301 | /* es route is imported into the es table */ | |
3302 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3303 | ||
3304 | /* we will match based on the entire esi to avoid | |
3305 | * imoort of an es route for esi2 into esi1 | |
3306 | */ | |
3307 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3308 | if (es && is_es_local(es)) | |
3309 | install_uninstall_route_in_es(bgp, es, | |
3310 | afi, safi, | |
3311 | evp, ri, import); | |
d62a17ae | 3312 | } |
d62a17ae | 3313 | } |
3314 | ||
3315 | return 0; | |
128ea8ab | 3316 | } |
3317 | ||
2bb9eff4 DS |
3318 | /* |
3319 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3320 | * routes | |
3321 | */ | |
80b140af MK |
3322 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3323 | { | |
3324 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3325 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3326 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3327 | |
3328 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3329 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3330 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3331 | } |
3332 | ||
2bb9eff4 DS |
3333 | /* |
3334 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3335 | * routes | |
3336 | */ | |
80b140af MK |
3337 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3338 | { | |
3339 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3340 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3341 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3342 | |
3343 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3344 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3345 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3346 | } |
3347 | ||
676f83b9 | 3348 | /* |
3349 | * update and advertise local routes for a VRF as type-5 routes. | |
3350 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3351 | * done in the global route table using the routes which already exist in the | |
3352 | * VRF routing table | |
3353 | */ | |
80b140af | 3354 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3355 | { |
80b140af MK |
3356 | /* skip if the RD is configured */ |
3357 | if (is_vrf_rd_configured(bgp_vrf)) | |
3358 | return; | |
3359 | ||
3360 | /* derive the RD for the VRF based on new router-id */ | |
3361 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3362 | ||
3363 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3364 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3365 | } |
3366 | ||
3367 | /* | |
3368 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3369 | * This is invoked upon VRF RD change. The processing is done only from global | |
3370 | * table. | |
3371 | */ | |
80b140af | 3372 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3373 | { |
80b140af MK |
3374 | /* skip if the RD is configured */ |
3375 | if (is_vrf_rd_configured(bgp_vrf)) | |
3376 | return; | |
3377 | ||
3378 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3379 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3380 | } |
3381 | ||
90e60aa7 | 3382 | /* |
3383 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3384 | * change. Note that the processing is done only on the global route table | |
3385 | * using routes that already exist in the per-VNI table. | |
3386 | */ | |
d62a17ae | 3387 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3388 | { | |
3389 | struct prefix_evpn p; | |
3390 | struct bgp_node *rn, *global_rn; | |
3391 | struct bgp_info *ri, *global_ri; | |
3392 | struct attr *attr; | |
3393 | afi_t afi = AFI_L2VPN; | |
3394 | safi_t safi = SAFI_EVPN; | |
3395 | ||
3396 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3397 | * attributes to create and advertise the type-3 route for this VNI | |
3398 | * in the global table. | |
3399 | */ | |
3400 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3401 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3402 | if (!rn) /* unexpected */ | |
3403 | return 0; | |
3404 | for (ri = rn->info; ri; ri = ri->next) | |
3405 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
3406 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3407 | break; | |
3408 | if (!ri) /* unexpected */ | |
3409 | return 0; | |
3410 | attr = ri->attr; | |
3411 | ||
3412 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3413 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
3414 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
3415 | 0); | |
d62a17ae | 3416 | |
3417 | /* Schedule for processing and unlock node. */ | |
3418 | bgp_process(bgp, global_rn, afi, safi); | |
3419 | bgp_unlock_node(global_rn); | |
3420 | ||
3421 | /* Now, walk this VNI's route table and use the route and its attribute | |
3422 | * to create and schedule route in global table. | |
3423 | */ | |
3424 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3425 | rn = bgp_route_next(rn)) { | |
3426 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3427 | ||
3428 | /* Identify MAC-IP local routes. */ | |
3429 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3430 | continue; | |
3431 | ||
3432 | for (ri = rn->info; ri; ri = ri->next) | |
3433 | if (ri->peer == bgp->peer_self | |
3434 | && ri->type == ZEBRA_ROUTE_BGP | |
3435 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3436 | break; | |
3437 | if (!ri) | |
3438 | continue; | |
3439 | ||
3440 | /* Create route in global routing table using this route entry's | |
3441 | * attribute. | |
3442 | */ | |
3443 | attr = ri->attr; | |
3444 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3445 | (struct prefix *)evp, &vpn->prd); | |
3446 | assert(global_rn); | |
3447 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 3448 | 0, &global_ri, 0); |
d62a17ae | 3449 | |
3450 | /* Schedule for processing and unlock node. */ | |
3451 | bgp_process(bgp, global_rn, afi, safi); | |
3452 | bgp_unlock_node(global_rn); | |
3453 | } | |
3454 | ||
3455 | return 0; | |
90e60aa7 | 3456 | } |
3457 | ||
3458 | /* | |
3459 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3460 | * table. Invoked upon router-id change. | |
3461 | */ | |
d62a17ae | 3462 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3463 | { |
d62a17ae | 3464 | int ret; |
3465 | struct prefix_evpn p; | |
3466 | struct bgp_node *global_rn; | |
3467 | struct bgp_info *ri; | |
3468 | afi_t afi = AFI_L2VPN; | |
3469 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3470 | |
d62a17ae | 3471 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3472 | * for this VNI - from the global table. | |
3473 | */ | |
3474 | ret = delete_global_type2_routes(bgp, vpn); | |
3475 | if (ret) | |
3476 | return ret; | |
90e60aa7 | 3477 | |
d62a17ae | 3478 | /* Remove type-3 route for this VNI from global table. */ |
3479 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3480 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3481 | (struct prefix *)&p, &vpn->prd); | |
3482 | if (global_rn) { | |
3483 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 3484 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
90e60aa7 | 3485 | |
d62a17ae | 3486 | /* Schedule for processing - withdraws to peers happen from |
3487 | * this table. | |
3488 | */ | |
3489 | if (ri) | |
3490 | bgp_process(bgp, global_rn, afi, safi); | |
3491 | bgp_unlock_node(global_rn); | |
3492 | } | |
90e60aa7 | 3493 | |
d62a17ae | 3494 | return 0; |
90e60aa7 | 3495 | } |
3496 | ||
2d48ee25 | 3497 | /* |
3498 | * Handle router-id change. Update and advertise local routes corresponding | |
3499 | * to this VNI from peers. Note that this is invoked after updating the | |
3500 | * router-id. The routes in the per-VNI table are used to create routes in | |
3501 | * the global table and schedule them. | |
3502 | */ | |
d62a17ae | 3503 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3504 | { |
d62a17ae | 3505 | struct bgpevpn *vpn; |
2d48ee25 | 3506 | |
d62a17ae | 3507 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3508 | |
d62a17ae | 3509 | if (!vpn) { |
3510 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3511 | return; | |
3512 | } | |
2d48ee25 | 3513 | |
d62a17ae | 3514 | /* Skip VNIs with configured RD. */ |
3515 | if (is_rd_configured(vpn)) | |
3516 | return; | |
2d48ee25 | 3517 | |
d62a17ae | 3518 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3519 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3520 | } |
3521 | ||
3522 | /* | |
3523 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3524 | * to this VNI from peers. Note that this is invoked prior to updating | |
3525 | * the router-id and is done only on the global route table, the routes | |
3526 | * are needed in the per-VNI table to re-advertise with new router id. | |
3527 | */ | |
d62a17ae | 3528 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3529 | { |
d62a17ae | 3530 | struct bgpevpn *vpn; |
2d48ee25 | 3531 | |
d62a17ae | 3532 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3533 | |
d62a17ae | 3534 | if (!vpn) { |
3535 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3536 | return; | |
3537 | } | |
2d48ee25 | 3538 | |
d62a17ae | 3539 | /* Skip VNIs with configured RD. */ |
3540 | if (is_rd_configured(vpn)) | |
3541 | return; | |
2d48ee25 | 3542 | |
d62a17ae | 3543 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3544 | } |
3545 | ||
128ea8ab | 3546 | /* |
3547 | * Process received EVPN type-2 route (advertise or withdraw). | |
3548 | */ | |
d62a17ae | 3549 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3550 | struct attr *attr, uint8_t *pfx, int psize, |
3551 | uint32_t addpath_id) | |
d62a17ae | 3552 | { |
3553 | struct prefix_rd prd; | |
3554 | struct prefix_evpn p; | |
554cd77a | 3555 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3556 | uint8_t ipaddr_len; |
3557 | uint8_t macaddr_len; | |
b57ba6d2 | 3558 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3559 | uint32_t num_labels = 0; |
554cd77a | 3560 | uint32_t eth_tag; |
d62a17ae | 3561 | int ret; |
3562 | ||
3563 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3564 | * additional 3 bytes if there is a second label (VNI): | |
3565 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3566 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3567 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3568 | */ | |
3569 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3570 | && psize != 40 && psize != 52) { | |
3571 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
3572 | peer->bgp->vrf_id, peer->host, psize); | |
3573 | return -1; | |
3574 | } | |
3575 | ||
554cd77a VB |
3576 | memset(&evpn, 0, sizeof(evpn)); |
3577 | ||
d62a17ae | 3578 | /* Make prefix_rd */ |
3579 | prd.family = AF_UNSPEC; | |
3580 | prd.prefixlen = 64; | |
3581 | memcpy(&prd.val, pfx, 8); | |
3582 | pfx += 8; | |
3583 | ||
3584 | /* Make EVPN prefix. */ | |
3585 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3586 | p.family = AF_EVPN; |
50f74cf1 | 3587 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3588 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3589 | ||
554cd77a VB |
3590 | /* Copy Ethernet Seg Identifier */ |
3591 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3592 | pfx += ESI_LEN; | |
d62a17ae | 3593 | |
554cd77a VB |
3594 | /* Copy Ethernet Tag */ |
3595 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3596 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3597 | pfx += 4; |
3598 | ||
3599 | /* Get the MAC Addr len */ | |
3600 | macaddr_len = *pfx++; | |
3601 | ||
3602 | /* Get the MAC Addr */ | |
28328ea9 | 3603 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3604 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3605 | pfx += ETH_ALEN; |
d62a17ae | 3606 | } else { |
3607 | zlog_err( | |
3608 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
3609 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3610 | return -1; | |
3611 | } | |
3612 | ||
3613 | ||
3614 | /* Get the IP. */ | |
3615 | ipaddr_len = *pfx++; | |
3616 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3617 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
3618 | zlog_err( | |
3619 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
3620 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3621 | return -1; | |
3622 | } | |
3623 | ||
3624 | if (ipaddr_len) { | |
3625 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3626 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3627 | ? IPADDR_V4 |
3628 | : IPADDR_V6; | |
3714a385 | 3629 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3630 | } |
3631 | pfx += ipaddr_len; | |
3632 | ||
b57ba6d2 MK |
3633 | /* Get the VNI(s). Stored as bytes here. */ |
3634 | num_labels++; | |
3635 | memset(label, 0, sizeof(label)); | |
3636 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3637 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3638 | psize -= (33 + ipaddr_len); |
3639 | /* Do we have a second VNI? */ | |
3640 | if (psize) { | |
3641 | num_labels++; | |
3642 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3643 | /* |
3644 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3645 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3646 | * the next field | |
6b11bd8d | 3647 | */ |
b57ba6d2 | 3648 | } |
d62a17ae | 3649 | |
3650 | /* Process the route. */ | |
3651 | if (attr) | |
3652 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3653 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3654 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3655 | else |
3656 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3657 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3658 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3659 | return ret; |
128ea8ab | 3660 | } |
3661 | ||
3662 | /* | |
3663 | * Process received EVPN type-3 route (advertise or withdraw). | |
3664 | */ | |
d62a17ae | 3665 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3666 | struct attr *attr, uint8_t *pfx, int psize, |
3667 | uint32_t addpath_id) | |
d62a17ae | 3668 | { |
3669 | struct prefix_rd prd; | |
3670 | struct prefix_evpn p; | |
d7c0a89a | 3671 | uint8_t ipaddr_len; |
554cd77a | 3672 | uint32_t eth_tag; |
d62a17ae | 3673 | int ret; |
3674 | ||
3675 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3676 | * IP len (1) and IP (4 or 16). | |
3677 | */ | |
3678 | if (psize != 17 && psize != 29) { | |
3679 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
3680 | peer->bgp->vrf_id, peer->host, psize); | |
3681 | return -1; | |
3682 | } | |
3683 | ||
7fd077aa | 3684 | /* If PMSI is present, log if it is anything other than IR. |
3685 | * Note: We just simply ignore the values as it is not clear if | |
3686 | * doing anything else is better. | |
3687 | */ | |
3688 | if (attr && | |
3689 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3690 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
d0be47e8 | 3691 | zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
7fd077aa | 3692 | peer->bgp->vrf_id, peer->host, |
3693 | attr->pmsi_tnl_type); | |
3694 | } | |
3695 | } | |
3696 | ||
d62a17ae | 3697 | /* Make prefix_rd */ |
3698 | prd.family = AF_UNSPEC; | |
3699 | prd.prefixlen = 64; | |
3700 | memcpy(&prd.val, pfx, 8); | |
3701 | pfx += 8; | |
3702 | ||
3703 | /* Make EVPN prefix. */ | |
3704 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3705 | p.family = AF_EVPN; |
50f74cf1 | 3706 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3707 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3708 | ||
554cd77a VB |
3709 | /* Copy Ethernet Tag */ |
3710 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3711 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3712 | pfx += 4; |
3713 | ||
3714 | /* Get the IP. */ | |
3715 | ipaddr_len = *pfx++; | |
3716 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3717 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3718 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3719 | } else { |
3720 | zlog_err( | |
3721 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
3722 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3723 | return -1; | |
3724 | } | |
3725 | ||
3726 | /* Process the route. */ | |
3727 | if (attr) | |
3728 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3729 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3730 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3731 | else |
3732 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3733 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3734 | &prd, NULL, 0, NULL); |
d62a17ae | 3735 | return ret; |
128ea8ab | 3736 | } |
3737 | ||
50f74cf1 | 3738 | /* |
3739 | * Process received EVPN type-4 route (advertise or withdraw). | |
3740 | */ | |
3741 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3742 | struct attr *attr, uint8_t *pfx, int psize, | |
3743 | uint32_t addpath_id) | |
3744 | { | |
3745 | int ret; | |
3746 | esi_t esi; | |
3747 | uint8_t ipaddr_len; | |
3748 | struct in_addr vtep_ip; | |
3749 | struct prefix_rd prd; | |
3750 | struct prefix_evpn p; | |
3751 | ||
3752 | /* Type-4 route should be either 23 or 35 bytes | |
3753 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3754 | */ | |
3755 | if (psize != 23 && psize != 35) { | |
3756 | zlog_err("%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
3757 | peer->bgp->vrf_id, peer->host, psize); | |
3758 | return -1; | |
3759 | } | |
3760 | ||
3761 | /* Make prefix_rd */ | |
3762 | prd.family = AF_UNSPEC; | |
3763 | prd.prefixlen = 64; | |
3764 | memcpy(&prd.val, pfx, 8); | |
3765 | pfx += 8; | |
3766 | ||
3767 | /* get the ESI */ | |
3768 | memcpy(&esi, pfx, ESI_BYTES); | |
3769 | pfx += ESI_BYTES; | |
3770 | ||
3771 | ||
3772 | /* Get the IP. */ | |
3773 | ipaddr_len = *pfx++; | |
3774 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3775 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3776 | } else { | |
3777 | zlog_err( | |
3778 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
3779 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3780 | return -1; | |
3781 | } | |
3782 | ||
3783 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3784 | /* Process the route. */ | |
3785 | if (attr) { | |
3786 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3787 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3788 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3789 | } else { |
50f74cf1 | 3790 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3791 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3792 | &prd, NULL, 0, NULL); | |
3793 | } | |
3794 | return ret; | |
3795 | } | |
3796 | ||
3797 | ||
128ea8ab | 3798 | /* |
3799 | * Process received EVPN type-5 route (advertise or withdraw). | |
3800 | */ | |
d62a17ae | 3801 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3802 | struct attr *attr, uint8_t *pfx, int psize, |
3803 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3804 | { |
3805 | struct prefix_rd prd; | |
3806 | struct prefix_evpn p; | |
3807 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3808 | uint8_t ippfx_len; |
3809 | uint32_t eth_tag; | |
b57ba6d2 | 3810 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3811 | int ret; |
3812 | ||
3813 | /* Type-5 route should be 34 or 58 bytes: | |
3814 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3815 | * GW (4 or 16) and VNI (3). | |
3816 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3817 | */ | |
3818 | if (psize != 34 && psize != 58) { | |
3819 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
3820 | peer->bgp->vrf_id, peer->host, psize); | |
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) { | |
3851 | zlog_err( | |
3852 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
3853 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3854 | return -1; | |
3855 | } | |
3714a385 | 3856 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3857 | |
3858 | /* Determine IPv4 or IPv6 prefix */ | |
3859 | /* Since the address and GW are from the same family, this just becomes | |
3860 | * a simple check on the total size. | |
3861 | */ | |
3862 | if (psize == 34) { | |
3714a385 | 3863 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3864 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3865 | pfx += 4; |
3866 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3867 | pfx += 4; | |
d62a17ae | 3868 | } else { |
3714a385 | 3869 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3870 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3871 | pfx += 16; |
3872 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3873 | pfx += 16; | |
d62a17ae | 3874 | } |
3875 | ||
b57ba6d2 MK |
3876 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3877 | memset(&label, 0, sizeof(label)); | |
3878 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3879 | |
3880 | /* | |
3881 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3882 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3883 | * field | |
6b11bd8d | 3884 | */ |
d62a17ae | 3885 | |
3886 | /* Process the route. */ | |
3887 | if (!withdraw) | |
3888 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3889 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3890 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3891 | else |
3892 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3893 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3894 | &prd, &label, 1, &evpn); |
d62a17ae | 3895 | |
3896 | return ret; | |
3897 | } | |
3898 | ||
3899 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3900 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3901 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3902 | { |
3903 | int len; | |
3904 | char temp[16]; | |
3905 | struct evpn_addr *p_evpn_p; | |
3906 | ||
3907 | memset(&temp, 0, 16); | |
b03b8898 | 3908 | if (p->family != AF_EVPN) |
d62a17ae | 3909 | return; |
3910 | p_evpn_p = &(p->u.prefix_evpn); | |
3911 | ||
e9fc2840 | 3912 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3913 | IP and GW-IP have to be both ipv4 or ipv6 |
3914 | */ | |
3714a385 | 3915 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3916 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3917 | else |
e9fc2840 | 3918 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3919 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3920 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3921 | stream_put(s, prd->val, 8); | |
0af35d90 | 3922 | if (attr) |
d62a17ae | 3923 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3924 | else | |
3925 | stream_put(s, &temp, 10); | |
3714a385 | 3926 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3927 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3928 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3929 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3930 | else |
3714a385 | 3931 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3932 | if (attr) { |
3714a385 | 3933 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3934 | stream_put_ipv4(s, |
3935 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3936 | else | |
3937 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3938 | } else { | |
3714a385 | 3939 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3940 | stream_put_ipv4(s, 0); |
3941 | else | |
3942 | stream_put(s, &temp, 16); | |
3943 | } | |
3944 | ||
b57ba6d2 | 3945 | if (num_labels) |
d62a17ae | 3946 | stream_put(s, label, 3); |
3947 | else | |
3948 | stream_put3(s, 0); | |
128ea8ab | 3949 | } |
3950 | ||
3951 | /* | |
3952 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3953 | */ | |
d62a17ae | 3954 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3955 | { |
d62a17ae | 3956 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3957 | |
d62a17ae | 3958 | /* Remove EVPN routes and schedule for processing. */ |
3959 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3960 | |
d62a17ae | 3961 | /* Clear "live" flag and see if hash needs to be freed. */ |
3962 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3963 | if (!is_vni_configured(vpn)) | |
3964 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3965 | } |
3966 | ||
3967 | /* | |
3968 | * Free a VNI entry; iterator function called during cleanup. | |
3969 | */ | |
d62a17ae | 3970 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3971 | { |
d62a17ae | 3972 | struct bgpevpn *vpn; |
128ea8ab | 3973 | |
d62a17ae | 3974 | vpn = (struct bgpevpn *)backet->data; |
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 VB |
4045 | |
4046 | if (!vpn) { | |
4047 | zlog_warn("%s: VNI hash entry for VNI not found", __PRETTY_FUNCTION__); | |
4048 | return; | |
4049 | } | |
4050 | ||
4051 | if (!is_import_rt_configured(vpn)) { | |
4052 | if (is_vni_live(vpn)) | |
4053 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4054 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4055 | list_delete_all_node(vpn->import_rtl); |
4056 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4057 | if (is_vni_live(vpn)) | |
4058 | bgp_evpn_install_routes(bgp, vpn); | |
4059 | } | |
4060 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4061 | list_delete_all_node(vpn->export_rtl); |
4062 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4063 | if (is_vni_live(vpn)) | |
4064 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4065 | } | |
4066 | } | |
4067 | ||
128ea8ab | 4068 | /* |
4069 | * Public functions. | |
4070 | */ | |
4071 | ||
5424b7ba | 4072 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4073 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4074 | afi_t afi, safi_t safi) |
4075 | { | |
4076 | int ret = 0; | |
4077 | struct prefix_evpn evp; | |
4078 | char buf[PREFIX_STRLEN]; | |
4079 | ||
31310b25 | 4080 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4081 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4082 | if (ret) { | |
4083 | zlog_err( | |
996c9314 LB |
4084 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4085 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4086 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4087 | } |
4088 | } | |
4089 | ||
342dd0c6 | 4090 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4091 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4092 | { |
4093 | struct bgp_table *table = NULL; | |
4094 | struct bgp_node *rn = NULL; | |
25f2ca53 | 4095 | struct bgp_info *ri; |
342dd0c6 | 4096 | |
053905d2 | 4097 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4098 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4099 | /* Only care about "selected" routes - non-imported. */ | |
4100 | /* TODO: Support for AddPath for EVPN. */ | |
4101 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4102 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4103 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 4104 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4105 | afi, safi); | |
4106 | break; | |
4107 | } | |
4108 | } | |
4109 | } | |
5424b7ba | 4110 | } |
342dd0c6 | 4111 | |
2f69f6d3 | 4112 | /* |
4113 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4114 | * to this function correspond to those of the source IP prefix (best | |
4115 | * path in the case of the attr. In the case of a local prefix (when we | |
4116 | * are advertising local subnets), the src_attr will be NULL. | |
4117 | */ | |
31310b25 | 4118 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4119 | struct attr *src_attr, afi_t afi, |
4120 | safi_t safi) | |
5424b7ba MK |
4121 | { |
4122 | int ret = 0; | |
4123 | struct prefix_evpn evp; | |
4124 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4125 | |
31310b25 | 4126 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4127 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4128 | if (ret) | |
996c9314 LB |
4129 | zlog_err("%u: Failed to create type-5 route for prefix %s", |
4130 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4131 | } |
4132 | ||
2f69f6d3 | 4133 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4134 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4135 | * advertisement is enabled. | |
4136 | */ | |
996c9314 LB |
4137 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4138 | safi_t safi) | |
342dd0c6 | 4139 | { |
4140 | struct bgp_table *table = NULL; | |
4141 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 4142 | struct bgp_info *ri; |
342dd0c6 | 4143 | |
053905d2 | 4144 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4145 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4146 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4147 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4148 | * TODO: Support for AddPath for EVPN. |
4149 | */ | |
4150 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4151 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4152 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
4153 | |
4154 | /* apply the route-map */ | |
4155 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4156 | int ret = 0; | |
4157 | ||
996c9314 LB |
4158 | ret = route_map_apply( |
4159 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4160 | .map, | |
4161 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
4162 | if (ret == RMAP_DENYMATCH) |
4163 | continue; | |
4164 | } | |
996c9314 LB |
4165 | bgp_evpn_advertise_type5_route( |
4166 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 4167 | break; |
4168 | } | |
4169 | } | |
31310b25 | 4170 | } |
342dd0c6 | 4171 | } |
4172 | ||
996c9314 | 4173 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4174 | { |
4175 | struct listnode *node, *nnode, *node_to_del; | |
4176 | struct ecommunity *ecom, *ecom_auto; | |
4177 | struct ecommunity_val eval; | |
4178 | ||
bf1061d8 VB |
4179 | if (bgp->advertise_autort_rfc8365) |
4180 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4181 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4182 | ||
4183 | ecom_auto = ecommunity_new(); | |
4184 | ecommunity_add_val(ecom_auto, &eval); | |
4185 | node_to_del = NULL; | |
4186 | ||
4187 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4188 | if (ecommunity_match(ecom, ecom_auto)) { | |
4189 | ecommunity_free(&ecom); | |
4190 | node_to_del = node; | |
4191 | } | |
4192 | } | |
4193 | ||
4194 | if (node_to_del) | |
4195 | list_delete_node(rtl, node_to_del); | |
4196 | ||
4197 | ecommunity_free(&ecom_auto); | |
4198 | } | |
4199 | ||
4200 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4201 | struct ecommunity *ecomadd) |
c581d8b0 | 4202 | { |
5ba238b7 MK |
4203 | /* uninstall routes from vrf */ |
4204 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4205 | |
4206 | /* Cleanup the RT to VRF mapping */ | |
4207 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4208 | ||
c581d8b0 MK |
4209 | /* Remove auto generated RT */ |
4210 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4211 | ||
4212 | /* Add the newly configured RT to RT list */ | |
4213 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4214 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4215 | ||
10ebe1ab MK |
4216 | /* map VRF to its RTs */ |
4217 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4218 | ||
5ba238b7 MK |
4219 | /* install routes matching the new VRF */ |
4220 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4221 | } |
4222 | ||
4223 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4224 | struct ecommunity *ecomdel) | |
4225 | { | |
4226 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4227 | struct ecommunity *ecom = NULL; | |
4228 | ||
5ba238b7 MK |
4229 | /* uninstall routes from vrf */ |
4230 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4231 | |
4232 | /* Cleanup the RT to VRF mapping */ | |
4233 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4234 | ||
c581d8b0 MK |
4235 | /* remove the RT from the RT list */ |
4236 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4237 | if (ecommunity_match(ecom, ecomdel)) { | |
4238 | ecommunity_free(&ecom); | |
4239 | node_to_del = node; | |
4240 | break; | |
4241 | } | |
4242 | } | |
4243 | ||
4244 | if (node_to_del) | |
4245 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4246 | ||
4247 | /* fallback to auto import rt, if this was the last RT */ | |
4248 | if (list_isempty(bgp_vrf->vrf_import_rtl)) { | |
4249 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4250 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4251 | } | |
4252 | ||
10ebe1ab MK |
4253 | /* map VRFs to its RTs */ |
4254 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4255 | ||
5ba238b7 MK |
4256 | /* install routes matching this new RT */ |
4257 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4258 | } |
4259 | ||
4260 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4261 | struct ecommunity *ecomadd) | |
4262 | { | |
4263 | /* remove auto-generated RT */ | |
4264 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4265 | ||
4266 | /* Add the new RT to the RT list */ | |
4267 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4268 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4269 | ||
f1f8b53c | 4270 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4271 | } |
4272 | ||
4273 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4274 | struct ecommunity *ecomdel) | |
4275 | { | |
4276 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4277 | struct ecommunity *ecom = NULL; | |
4278 | ||
4279 | /* Remove the RT from the RT list */ | |
4280 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4281 | if (ecommunity_match(ecom, ecomdel)) { | |
4282 | ecommunity_free(&ecom); | |
4283 | node_to_del = node; | |
4284 | break; | |
4285 | } | |
4286 | } | |
4287 | ||
4288 | if (node_to_del) | |
4289 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4290 | ||
4291 | /* fall back to auto-generated RT if this was the last RT */ | |
877702e7 | 4292 | if (bgp_vrf->vrf_export_rtl && list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4293 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4294 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4295 | } | |
4296 | ||
f1f8b53c | 4297 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4298 | } |
4299 | ||
2d48ee25 | 4300 | /* |
4301 | * Handle change to BGP router id. This is invoked twice by the change | |
4302 | * handler, first before the router id has been changed and then after | |
4303 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4304 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4305 | * will result in the routes being re-advertised. |
4306 | */ | |
d62a17ae | 4307 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4308 | { |
676f83b9 | 4309 | if (withdraw) { |
4310 | ||
4311 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4312 | stored in the global table for this vrf |
4313 | */ | |
80b140af | 4314 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4315 | |
4316 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4317 | * L2-VNIs |
4318 | */ | |
d62a17ae | 4319 | hash_iterate(bgp->vnihash, |
4320 | (void (*)(struct hash_backet *, | |
4321 | void *))withdraw_router_id_vni, | |
4322 | bgp); | |
676f83b9 | 4323 | } else { |
4324 | ||
4325 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4326 | * RD |
4327 | */ | |
80b140af | 4328 | update_router_id_vrf(bgp); |
676f83b9 | 4329 | |
4330 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4331 | * new RD |
4332 | */ | |
d62a17ae | 4333 | hash_iterate(bgp->vnihash, |
4334 | (void (*)(struct hash_backet *, | |
4335 | void *))update_router_id_vni, | |
4336 | bgp); | |
676f83b9 | 4337 | } |
2d48ee25 | 4338 | } |
4339 | ||
bf1061d8 VB |
4340 | /* |
4341 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4342 | */ | |
4343 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4344 | { | |
4345 | hash_iterate(bgp->vnihash, | |
4346 | (void (*)(struct hash_backet *, | |
4347 | void*))update_autort_vni, | |
4348 | bgp); | |
4349 | } | |
4350 | ||
90e60aa7 | 4351 | /* |
4352 | * Handle change to export RT - update and advertise local routes. | |
4353 | */ | |
d62a17ae | 4354 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4355 | { |
d62a17ae | 4356 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4357 | } |
4358 | ||
996c9314 | 4359 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4360 | { |
4361 | if (withdraw) | |
4362 | delete_withdraw_vrf_routes(bgp_vrf); | |
4363 | else | |
4364 | update_advertise_vrf_routes(bgp_vrf); | |
4365 | } | |
4366 | ||
90e60aa7 | 4367 | /* |
4368 | * Handle change to RD. This is invoked twice by the change handler, | |
4369 | * first before the RD has been changed and then after the RD has | |
4370 | * been changed. The first invocation will result in local routes | |
4371 | * of this VNI being deleted and withdrawn and the next will result | |
4372 | * in the routes being re-advertised. | |
4373 | */ | |
d62a17ae | 4374 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4375 | int withdraw) | |
90e60aa7 | 4376 | { |
d62a17ae | 4377 | if (withdraw) |
4378 | delete_withdraw_vni_routes(bgp, vpn); | |
4379 | else | |
4380 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4381 | } |
4382 | ||
4383 | /* | |
4384 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4385 | */ | |
d62a17ae | 4386 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4387 | { |
d62a17ae | 4388 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4389 | } |
4390 | ||
4391 | /* | |
4392 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4393 | * to Import RT. | |
4394 | */ | |
d62a17ae | 4395 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4396 | { |
d62a17ae | 4397 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4398 | } |
4399 | ||
b16031a2 | 4400 | /* |
b57ba6d2 | 4401 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4402 | */ |
d7c0a89a | 4403 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4404 | int len) |
b16031a2 | 4405 | { |
b57ba6d2 | 4406 | vni_t vni1, vni2; |
b16031a2 | 4407 | |
b57ba6d2 MK |
4408 | vni1 = label2vni(label); |
4409 | if (num_labels == 2) { | |
996c9314 | 4410 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4411 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4412 | } else | |
4413 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4414 | return buf; |
b16031a2 | 4415 | } |
4416 | ||
9c92b5f7 MK |
4417 | /* |
4418 | * Function to convert evpn route to json format. | |
4419 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4420 | */ | |
57f7feb6 | 4421 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4422 | { |
b682f6de | 4423 | char buf1[ETHER_ADDR_STRLEN]; |
4424 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4425 | |
b682f6de | 4426 | if (!json) |
4427 | return; | |
9c92b5f7 | 4428 | |
dff8f48d | 4429 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4430 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4431 | json_object_int_add(json, "ethTag", |
4432 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4433 | json_object_int_add(json, "ipLen", |
3714a385 | 4434 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4435 | ? IPV4_MAX_BITLEN |
4436 | : IPV6_MAX_BITLEN); | |
b682f6de | 4437 | json_object_string_add(json, "ip", |
3714a385 | 4438 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4439 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4440 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4441 | json_object_int_add(json, "routeType", |
4442 | p->prefix.route_type); | |
3714a385 | 4443 | json_object_int_add(json, "ethTag", |
4444 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4445 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4446 | json_object_string_add(json, "mac", | |
3714a385 | 4447 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4448 | buf1, |
4449 | sizeof(buf1))); | |
dff8f48d | 4450 | } else { |
d7c0a89a | 4451 | uint8_t family; |
dff8f48d | 4452 | |
3714a385 | 4453 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4454 | : AF_INET6; |
dff8f48d | 4455 | |
b682f6de | 4456 | json_object_int_add(json, "routeType", |
57f7feb6 | 4457 | p->prefix.route_type); |
3714a385 | 4458 | json_object_int_add(json, "ethTag", |
4459 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4460 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4461 | json_object_string_add(json, "mac", |
3714a385 | 4462 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4463 | buf1, |
4464 | sizeof(buf1))); | |
b682f6de | 4465 | json_object_int_add(json, "ipLen", |
3714a385 | 4466 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4467 | ? IPV4_MAX_BITLEN |
4468 | : IPV6_MAX_BITLEN); | |
4469 | json_object_string_add( | |
4470 | json, "ip", | |
3714a385 | 4471 | inet_ntop(family, |
4472 | &p->prefix.macip_addr.ip.ip.addr, | |
4473 | buf2, | |
57f7feb6 | 4474 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4475 | } |
4476 | } else { | |
4477 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4478 | } | |
9c92b5f7 MK |
4479 | } |
4480 | ||
520d5d76 | 4481 | /* |
4482 | * Function to convert evpn route to string. | |
4483 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4484 | */ | |
d62a17ae | 4485 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4486 | { | |
4487 | char buf1[ETHER_ADDR_STRLEN]; | |
4488 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4489 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4490 | |
4491 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4492 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4493 | p->prefix.imet_addr.eth_tag, |
4494 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4495 | : IPV6_MAX_BITLEN, |
3714a385 | 4496 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4497 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4498 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4499 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4500 | p->prefix.route_type, | |
3714a385 | 4501 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4502 | 8 * ETH_ALEN, |
3714a385 | 4503 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4504 | sizeof(buf1))); |
4505 | else { | |
d7c0a89a | 4506 | uint8_t family; |
d62a17ae | 4507 | |
3714a385 | 4508 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4509 | : AF_INET6; |
554cd77a VB |
4510 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4511 | p->prefix.route_type, | |
3714a385 | 4512 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4513 | 8 * ETH_ALEN, |
3714a385 | 4514 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4515 | sizeof(buf1)), |
4516 | family == AF_INET ? IPV4_MAX_BITLEN | |
4517 | : IPV6_MAX_BITLEN, | |
3714a385 | 4518 | inet_ntop(family, |
4519 | &p->prefix.macip_addr.ip.ip.addr, | |
4520 | buf2, | |
d62a17ae | 4521 | PREFIX2STR_BUFFER)); |
4522 | } | |
342dd0c6 | 4523 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4524 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4525 | p->prefix.route_type, | |
3714a385 | 4526 | p->prefix.prefix_addr.eth_tag, |
4527 | p->prefix.prefix_addr.ip_prefix_length, | |
4528 | is_evpn_prefix_ipaddr_v4(p) | |
4529 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4530 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4531 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4532 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4533 | p->prefix.route_type, | |
4534 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4535 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4536 | : IPV6_MAX_BITLEN, | |
4537 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4538 | } else { |
b03b8898 | 4539 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4540 | snprintf(buf, len, "(unsupported route type %d)", |
4541 | p->prefix.route_type); | |
d62a17ae | 4542 | } |
4543 | ||
4544 | return (buf); | |
520d5d76 | 4545 | } |
4546 | ||
128ea8ab | 4547 | /* |
4548 | * Encode EVPN prefix in Update (MP_REACH) | |
4549 | */ | |
d62a17ae | 4550 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4551 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4552 | uint32_t num_labels, struct attr *attr, |
4553 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4554 | { |
4555 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4556 | int len, ipa_len = 0; |
d62a17ae | 4557 | |
4558 | if (addpath_encode) | |
4559 | stream_putl(s, addpath_tx_id); | |
4560 | ||
4561 | /* Route type */ | |
4562 | stream_putc(s, evp->prefix.route_type); | |
4563 | ||
4564 | switch (evp->prefix.route_type) { | |
4565 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4566 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4567 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4568 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4569 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4570 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4571 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4572 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4573 | len += 3; | |
4574 | stream_putc(s, len); | |
996c9314 | 4575 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4576 | if (attr) |
4577 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4578 | else | |
4579 | stream_put(s, 0, 10); | |
3714a385 | 4580 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4581 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4582 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4583 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4584 | if (ipa_len) /* IP */ | |
4585 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4586 | ipa_len); | |
b57ba6d2 MK |
4587 | /* 1st label is the L2 VNI */ |
4588 | stream_put(s, label, BGP_LABEL_BYTES); | |
4589 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4590 | if (ipa_len && num_labels > 1) | |
996c9314 | 4591 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4592 | break; |
4593 | ||
4594 | case BGP_EVPN_IMET_ROUTE: | |
4595 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4596 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4597 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4598 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4599 | /* Originating Router's IP Addr */ | |
3714a385 | 4600 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4601 | break; |
4602 | ||
50f74cf1 | 4603 | case BGP_EVPN_ES_ROUTE: |
4604 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4605 | stream_put(s, prd->val, 8); /* RD */ | |
4606 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4607 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4608 | /* VTEP IP */ |
4609 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4610 | break; |
4611 | ||
d62a17ae | 4612 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4613 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4614 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4615 | break; |
4616 | ||
4617 | default: | |
4618 | break; | |
4619 | } | |
4620 | } | |
4621 | ||
4622 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4623 | struct bgp_nlri *packet, int withdraw) | |
4624 | { | |
d7c0a89a QY |
4625 | uint8_t *pnt; |
4626 | uint8_t *lim; | |
d62a17ae | 4627 | afi_t afi; |
4628 | safi_t safi; | |
d7c0a89a | 4629 | uint32_t addpath_id; |
d62a17ae | 4630 | int addpath_encoded; |
4631 | int psize = 0; | |
d7c0a89a QY |
4632 | uint8_t rtype; |
4633 | uint8_t rlen; | |
d62a17ae | 4634 | struct prefix p; |
4635 | ||
d62a17ae | 4636 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4637 | pnt = packet->nlri; | |
4638 | lim = pnt + packet->length; | |
4639 | afi = packet->afi; | |
4640 | safi = packet->safi; | |
4641 | addpath_id = 0; | |
4642 | ||
4643 | addpath_encoded = | |
4644 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4645 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4646 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4647 | ||
4648 | for (; pnt < lim; pnt += psize) { | |
4649 | /* Clear prefix structure. */ | |
4650 | memset(&p, 0, sizeof(struct prefix)); | |
4651 | ||
4652 | /* Deal with path-id if AddPath is supported. */ | |
4653 | if (addpath_encoded) { | |
4654 | /* When packet overflow occurs return immediately. */ | |
4655 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4656 | return -1; | |
4657 | ||
4658 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4659 | pnt += BGP_ADDPATH_ID_LEN; | |
4660 | } | |
4661 | ||
4662 | /* All EVPN NLRI types start with type and length. */ | |
4663 | if (pnt + 2 > lim) | |
4664 | return -1; | |
4665 | ||
4666 | rtype = *pnt++; | |
4667 | psize = rlen = *pnt++; | |
4668 | ||
4669 | /* When packet overflow occur return immediately. */ | |
4670 | if (pnt + psize > lim) | |
4671 | return -1; | |
4672 | ||
4673 | switch (rtype) { | |
4674 | case BGP_EVPN_MAC_IP_ROUTE: | |
4675 | if (process_type2_route(peer, afi, safi, | |
4676 | withdraw ? NULL : attr, pnt, | |
4677 | psize, addpath_id)) { | |
4678 | zlog_err( | |
4679 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
4680 | peer->bgp->vrf_id, peer->host, psize); | |
4681 | return -1; | |
4682 | } | |
4683 | break; | |
4684 | ||
4685 | case BGP_EVPN_IMET_ROUTE: | |
4686 | if (process_type3_route(peer, afi, safi, | |
4687 | withdraw ? NULL : attr, pnt, | |
4688 | psize, addpath_id)) { | |
4689 | zlog_err( | |
4690 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
4691 | peer->bgp->vrf_id, peer->host, psize); | |
4692 | return -1; | |
4693 | } | |
4694 | break; | |
4695 | ||
50f74cf1 | 4696 | case BGP_EVPN_ES_ROUTE: |
4697 | if (process_type4_route(peer, afi, safi, | |
4698 | withdraw ? NULL : attr, pnt, | |
4699 | psize, addpath_id)) { | |
4700 | zlog_err( | |
4701 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", | |
4702 | peer->bgp->vrf_id, peer->host, psize); | |
4703 | return -1; | |
4704 | } | |
4705 | break; | |
4706 | ||
d62a17ae | 4707 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4708 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4709 | psize, addpath_id, withdraw)) { | |
4710 | zlog_err( | |
4711 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
4712 | peer->bgp->vrf_id, peer->host, psize); | |
4713 | return -1; | |
4714 | } | |
4715 | break; | |
4716 | ||
4717 | default: | |
4718 | break; | |
4719 | } | |
4720 | } | |
4721 | ||
4722 | /* Packet length consistency check. */ | |
4723 | if (pnt != lim) | |
4724 | return -1; | |
4725 | ||
4726 | return 0; | |
128ea8ab | 4727 | } |
4728 | ||
10ebe1ab MK |
4729 | /* |
4730 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4731 | * The mapping will be used during route processing. | |
4732 | * bgp_def: default bgp instance | |
4733 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4734 | */ | |
4735 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4736 | { | |
4737 | int i = 0; | |
4738 | struct ecommunity_val *eval = NULL; | |
4739 | struct listnode *node = NULL, *nnode = NULL; | |
4740 | struct ecommunity *ecom = NULL; | |
4741 | ||
4742 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4743 | for (i = 0; i < ecom->size; i++) { | |
4744 | eval = (struct ecommunity_val *)(ecom->val | |
4745 | + (i | |
4746 | * ECOMMUNITY_SIZE)); | |
4747 | map_vrf_to_rt(bgp_vrf, eval); | |
4748 | } | |
4749 | } | |
4750 | } | |
4751 | ||
4752 | /* | |
4753 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4754 | */ | |
4755 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4756 | { | |
4757 | int i; | |
4758 | struct ecommunity_val *eval; | |
4759 | struct listnode *node, *nnode; | |
4760 | struct ecommunity *ecom; | |
4761 | ||
4762 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4763 | for (i = 0; i < ecom->size; i++) { | |
4764 | struct vrf_irt_node *irt; | |
4765 | struct ecommunity_val eval_tmp; | |
4766 | ||
4767 | eval = (struct ecommunity_val *)(ecom->val | |
4768 | + (i | |
4769 | * ECOMMUNITY_SIZE)); | |
4770 | /* If using "automatic" RT, we only care about the | |
4771 | * local-admin sub-field. | |
4772 | * This is to facilitate using VNI as the RT for EBGP | |
4773 | * peering too. | |
4774 | */ | |
4775 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4776 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4777 | BGP_VRF_IMPORT_RT_CFGD)) | |
4778 | mask_ecom_global_admin(&eval_tmp, eval); | |
4779 | ||
4780 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4781 | if (irt) | |
4782 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4783 | } | |
4784 | } | |
4785 | } | |
4786 | ||
4787 | ||
128ea8ab | 4788 | /* |
4789 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4790 | * The mapping will be used during route processing. | |
4791 | */ | |
d62a17ae | 4792 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4793 | { |
d62a17ae | 4794 | int i; |
4795 | struct ecommunity_val *eval; | |
4796 | struct listnode *node, *nnode; | |
4797 | struct ecommunity *ecom; | |
128ea8ab | 4798 | |
d62a17ae | 4799 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4800 | for (i = 0; i < ecom->size; i++) { | |
4801 | eval = (struct ecommunity_val *)(ecom->val | |
4802 | + (i | |
4803 | * ECOMMUNITY_SIZE)); | |
4804 | map_vni_to_rt(bgp, vpn, eval); | |
4805 | } | |
4806 | } | |
128ea8ab | 4807 | } |
4808 | ||
4809 | /* | |
4810 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4811 | */ | |
d62a17ae | 4812 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4813 | { |
d62a17ae | 4814 | int i; |
4815 | struct ecommunity_val *eval; | |
4816 | struct listnode *node, *nnode; | |
4817 | struct ecommunity *ecom; | |
128ea8ab | 4818 | |
d62a17ae | 4819 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4820 | for (i = 0; i < ecom->size; i++) { | |
4821 | struct irt_node *irt; | |
4822 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4823 | |
d62a17ae | 4824 | eval = (struct ecommunity_val *)(ecom->val |
4825 | + (i | |
4826 | * ECOMMUNITY_SIZE)); | |
4827 | /* If using "automatic" RT, we only care about the | |
4828 | * local-admin sub-field. | |
4829 | * This is to facilitate using VNI as the RT for EBGP | |
4830 | * peering too. | |
4831 | */ | |
4832 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4833 | if (!is_import_rt_configured(vpn)) | |
4834 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4835 | |
d62a17ae | 4836 | irt = lookup_import_rt(bgp, &eval_tmp); |
4837 | if (irt) | |
4838 | unmap_vni_from_rt(bgp, vpn, irt); | |
4839 | } | |
4840 | } | |
128ea8ab | 4841 | } |
4842 | ||
4843 | /* | |
4844 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4845 | * The mapping will be used during route processing. | |
4846 | */ | |
d62a17ae | 4847 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4848 | { |
c581d8b0 | 4849 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4850 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4851 | |
d62a17ae | 4852 | /* Map RT to VNI */ |
4853 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4854 | } |
4855 | ||
4856 | /* | |
4857 | * Derive Export RT automatically for VNI. | |
4858 | */ | |
d62a17ae | 4859 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4860 | { |
c581d8b0 | 4861 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4862 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4863 | } |
4864 | ||
676f83b9 | 4865 | /* |
4866 | * Derive RD automatically for VNI using passed information - it | |
4867 | * is of the form RouterId:unique-id-for-vni. | |
4868 | */ | |
4869 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4870 | { | |
92708db6 | 4871 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4872 | } |
4873 | ||
128ea8ab | 4874 | /* |
4875 | * Derive RD automatically for VNI using passed information - it | |
4876 | * is of the form RouterId:unique-id-for-vni. | |
4877 | */ | |
d62a17ae | 4878 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4879 | { |
d62a17ae | 4880 | char buf[100]; |
128ea8ab | 4881 | |
d62a17ae | 4882 | vpn->prd.family = AF_UNSPEC; |
4883 | vpn->prd.prefixlen = 64; | |
4884 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4885 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4886 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4887 | } |
4888 | ||
4889 | /* | |
4890 | * Lookup VNI. | |
4891 | */ | |
d62a17ae | 4892 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4893 | { |
d62a17ae | 4894 | struct bgpevpn *vpn; |
4895 | struct bgpevpn tmp; | |
128ea8ab | 4896 | |
d62a17ae | 4897 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4898 | tmp.vni = vni; | |
4899 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4900 | return vpn; | |
128ea8ab | 4901 | } |
4902 | ||
4903 | /* | |
4904 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4905 | */ | |
d62a17ae | 4906 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4907 | struct in_addr originator_ip, |
4908 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4909 | { |
d62a17ae | 4910 | struct bgpevpn *vpn; |
128ea8ab | 4911 | |
d62a17ae | 4912 | if (!bgp) |
4913 | return NULL; | |
128ea8ab | 4914 | |
d62a17ae | 4915 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4916 | if (!vpn) | |
4917 | return NULL; | |
128ea8ab | 4918 | |
d62a17ae | 4919 | /* Set values - RD and RT set to defaults. */ |
4920 | vpn->vni = vni; | |
4921 | vpn->originator_ip = originator_ip; | |
29c53922 | 4922 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4923 | |
d62a17ae | 4924 | /* Initialize route-target import and export lists */ |
4925 | vpn->import_rtl = list_new(); | |
4926 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4927 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4928 | vpn->export_rtl = list_new(); |
4929 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4930 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4931 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4932 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4933 | |
d62a17ae | 4934 | /* Initialize EVPN route table. */ |
960035b2 | 4935 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4936 | |
d62a17ae | 4937 | /* Add to hash */ |
4938 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4939 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4940 | return NULL; | |
4941 | } | |
6a8657d0 MK |
4942 | |
4943 | /* add to l2vni list on corresponding vrf */ | |
4944 | bgpevpn_link_to_l3vni(vpn); | |
4945 | ||
d62a17ae | 4946 | QOBJ_REG(vpn, bgpevpn); |
4947 | return vpn; | |
128ea8ab | 4948 | } |
4949 | ||
4950 | /* | |
4951 | * Free a given VPN - called in multiple scenarios such as zebra | |
4952 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4953 | * This just frees appropriate memory, caller should have taken other | |
4954 | * needed actions. | |
4955 | */ | |
d62a17ae | 4956 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4957 | { |
6a8657d0 | 4958 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4959 | bgp_table_unlock(vpn->route_table); |
4960 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4961 | list_delete_and_null(&vpn->import_rtl); |
4962 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4963 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4964 | hash_release(bgp->vnihash, vpn); |
4965 | QOBJ_UNREG(vpn); | |
4966 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4967 | } |
4968 | ||
4969 | /* | |
50f74cf1 | 4970 | * Lookup local ES. |
4971 | */ | |
4972 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
4973 | { | |
4974 | struct evpnes *es; | |
4975 | struct evpnes tmp; | |
4976 | ||
4977 | memset(&tmp, 0, sizeof(struct evpnes)); | |
4978 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
4979 | es = hash_lookup(bgp->esihash, &tmp); | |
4980 | return es; | |
4981 | } | |
4982 | ||
4983 | /* | |
4984 | * Create a new local es - invoked upon zebra notification. | |
4985 | */ | |
4986 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
4987 | esi_t *esi, | |
4988 | struct ipaddr *originator_ip) | |
4989 | { | |
4990 | char buf[100]; | |
4991 | struct evpnes *es; | |
4992 | ||
4993 | if (!bgp) | |
4994 | return NULL; | |
4995 | ||
4996 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
4997 | if (!es) | |
4998 | return NULL; | |
4999 | ||
5000 | /* set the ESI and originator_ip */ | |
5001 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5002 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5003 | ||
5004 | /* Initialise the VTEP list */ | |
5005 | es->vtep_list = list_new(); | |
5006 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5007 | ||
5008 | /* auto derive RD for this es */ | |
5009 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5010 | es->prd.family = AF_UNSPEC; | |
5011 | es->prd.prefixlen = 64; | |
5012 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5013 | (void)str2prefix_rd(buf, &es->prd); | |
5014 | ||
5015 | /* Initialize the ES route table */ | |
5016 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5017 | ||
5018 | /* Add to hash */ | |
5019 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5020 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5021 | return NULL; | |
5022 | } | |
5023 | ||
5024 | QOBJ_REG(es, evpnes); | |
5025 | return es; | |
5026 | } | |
5027 | ||
5028 | /* | |
5029 | * Free a given ES - | |
5030 | * This just frees appropriate memory, caller should have taken other | |
5031 | * needed actions. | |
5032 | */ | |
5033 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5034 | { | |
5035 | list_delete_and_null(&es->vtep_list); | |
5036 | bgp_table_unlock(es->route_table); | |
5037 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5038 | hash_release(bgp->esihash, es); | |
5039 | QOBJ_UNREG(es); | |
5040 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5041 | } | |
5042 | ||
5043 | /* | |
5044 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5045 | */ |
d62a17ae | 5046 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5047 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5048 | { |
d62a17ae | 5049 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 5050 | } |
5051 | ||
5052 | /* | |
50f74cf1 | 5053 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5054 | */ |
d62a17ae | 5055 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5056 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5057 | { |
d62a17ae | 5058 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 5059 | } |
5060 | ||
db0e1937 MK |
5061 | /* filter routes which have martian next hops */ |
5062 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5063 | { | |
0291c246 MK |
5064 | afi_t afi; |
5065 | safi_t safi; | |
5066 | struct bgp_node *rd_rn, *rn; | |
5067 | struct bgp_table *table; | |
5068 | struct bgp_info *ri; | |
db0e1937 MK |
5069 | |
5070 | afi = AFI_L2VPN; | |
5071 | safi = SAFI_EVPN; | |
5072 | ||
5073 | /* Walk entire global routing table and evaluate routes which could be | |
5074 | * imported into this VPN. Note that we cannot just look at the routes | |
5075 | * for the VNI's RD - | |
5076 | * remote routes applicable for this VNI could have any RD. | |
5077 | */ | |
5078 | /* EVPN routes are a 2-level table. */ | |
5079 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5080 | rd_rn = bgp_route_next(rd_rn)) { | |
5081 | table = (struct bgp_table *)(rd_rn->info); | |
5082 | if (!table) | |
5083 | continue; | |
5084 | ||
5085 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5086 | ||
5087 | for (ri = rn->info; ri; ri = ri->next) { | |
5088 | ||
5089 | /* Consider "valid" remote routes applicable for | |
5090 | * this VNI. */ | |
5091 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
5092 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
5093 | continue; | |
5094 | ||
60466a63 | 5095 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
5096 | |
5097 | char attr_str[BUFSIZ]; | |
5098 | char pbuf[PREFIX_STRLEN]; | |
5099 | ||
5100 | bgp_dump_attr(ri->attr, attr_str, | |
5101 | BUFSIZ); | |
5102 | ||
5103 | if (bgp_debug_update(ri->peer, &rn->p, | |
5104 | NULL, 1)) | |
5105 | zlog_debug( | |
b682f6de | 5106 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5107 | bgp->vrf_id, |
5108 | prefix2str( | |
60466a63 | 5109 | &rn->p, pbuf, |
db0e1937 MK |
5110 | sizeof(pbuf)), |
5111 | attr_str); | |
5112 | ||
5113 | bgp_evpn_unimport_route(bgp, afi, safi, | |
5114 | &rn->p, ri); | |
5115 | ||
60466a63 QY |
5116 | bgp_rib_remove(rn, ri, ri->peer, afi, |
5117 | safi); | |
db0e1937 | 5118 | } |
db0e1937 MK |
5119 | } |
5120 | } | |
5121 | } | |
5122 | ||
5123 | return 0; | |
5124 | } | |
5125 | ||
128ea8ab | 5126 | /* |
5127 | * Handle del of a local MACIP. | |
5128 | */ | |
d62a17ae | 5129 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5130 | struct ipaddr *ip) | |
128ea8ab | 5131 | { |
d62a17ae | 5132 | struct bgpevpn *vpn; |
5133 | struct prefix_evpn p; | |
128ea8ab | 5134 | |
d62a17ae | 5135 | if (!bgp->vnihash) { |
5136 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
5137 | return -1; | |
5138 | } | |
128ea8ab | 5139 | |
d62a17ae | 5140 | /* Lookup VNI hash - should exist. */ |
5141 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5142 | if (!vpn || !is_vni_live(vpn)) { | |
5143 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
5144 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5145 | return -1; | |
5146 | } | |
128ea8ab | 5147 | |
d62a17ae | 5148 | /* Remove EVPN type-2 route and schedule for processing. */ |
5149 | build_evpn_type2_prefix(&p, mac, ip); | |
5150 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5151 | |
d62a17ae | 5152 | return 0; |
128ea8ab | 5153 | } |
5154 | ||
5155 | /* | |
5156 | * Handle add of a local MACIP. | |
5157 | */ | |
d62a17ae | 5158 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
d7c0a89a | 5159 | struct ipaddr *ip, uint8_t flags) |
128ea8ab | 5160 | { |
d62a17ae | 5161 | struct bgpevpn *vpn; |
5162 | struct prefix_evpn p; | |
128ea8ab | 5163 | |
d62a17ae | 5164 | if (!bgp->vnihash) { |
5165 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
5166 | return -1; | |
5167 | } | |
128ea8ab | 5168 | |
d62a17ae | 5169 | /* Lookup VNI hash - should exist. */ |
5170 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5171 | if (!vpn || !is_vni_live(vpn)) { | |
5172 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
5173 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5174 | return -1; | |
5175 | } | |
128ea8ab | 5176 | |
d62a17ae | 5177 | /* Create EVPN type-2 route and schedule for processing. */ |
5178 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 5179 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 5180 | char buf[ETHER_ADDR_STRLEN]; |
5181 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5182 | |
d62a17ae | 5183 | zlog_err( |
ead40654 | 5184 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5185 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5186 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5187 | ? "sticky gateway" | |
5188 | : "", | |
d62a17ae | 5189 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5190 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5191 | return -1; |
5192 | } | |
128ea8ab | 5193 | |
d62a17ae | 5194 | return 0; |
128ea8ab | 5195 | } |
5196 | ||
6a8657d0 MK |
5197 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5198 | struct bgp *bgp_vrf) | |
5199 | { | |
5200 | struct bgpevpn *vpn = NULL; | |
5201 | struct bgp *bgp_def = NULL; | |
5202 | ||
5203 | bgp_def = bgp_get_default(); | |
5204 | assert(bgp_def); | |
5205 | ||
5206 | vpn = (struct bgpevpn *)backet->data; | |
5207 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
5208 | bgpevpn_link_to_l3vni(vpn); | |
5209 | } | |
5210 | ||
996c9314 LB |
5211 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5212 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5213 | { |
5214 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5215 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5216 | struct listnode *node = NULL; |
5217 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5218 | as_t as = 0; |
5219 | ||
5220 | /* get the default instamce - required to get the AS number for VRF | |
523cafc4 | 5221 | * auto-creatio |
5222 | */ | |
fe1dc5a3 MK |
5223 | bgp_def = bgp_get_default(); |
5224 | if (!bgp_def) { | |
996c9314 LB |
5225 | zlog_err( |
5226 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
5227 | l3vni); | |
fe1dc5a3 MK |
5228 | return -1; |
5229 | } | |
5230 | as = bgp_def->as; | |
5231 | ||
5232 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5233 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5234 | if (!bgp_vrf) { |
5235 | ||
5236 | int ret = 0; | |
5237 | ||
5238 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5239 | BGP_INSTANCE_TYPE_VRF); | |
5240 | switch (ret) { | |
5241 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
5242 | zlog_err("'bgp multiple-instance' not present\n"); | |
5243 | return -1; | |
5244 | case BGP_ERR_AS_MISMATCH: | |
5245 | zlog_err("BGP is already running; AS is %u\n", as); | |
5246 | return -1; | |
5247 | case BGP_ERR_INSTANCE_MISMATCH: | |
5248 | zlog_err("BGP instance name and AS number mismatch\n"); | |
5249 | return -1; | |
5250 | } | |
5251 | ||
5252 | /* mark as auto created */ | |
5253 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5254 | } | |
5255 | ||
5256 | /* associate with l3vni */ | |
5257 | bgp_vrf->l3vni = l3vni; | |
5258 | ||
5259 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5260 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5261 | ||
b67a60d2 | 5262 | /* set the originator ip */ |
5263 | bgp_vrf->originator_ip = originator_ip; | |
5264 | ||
c48d9f5f MK |
5265 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5266 | if (filter) | |
5267 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5268 | ||
c581d8b0 MK |
5269 | /* auto derive RD/RT */ |
5270 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5271 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5272 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5273 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5274 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5275 | |
6a8657d0 MK |
5276 | /* link all corresponding l2vnis */ |
5277 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5278 | (void (*)(struct hash_backet *, |
5279 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5280 | bgp_vrf); |
5281 | ||
c48d9f5f MK |
5282 | /* Only update all corresponding type-2 routes if we are advertising two |
5283 | * labels along with type-2 routes | |
5284 | */ | |
5285 | if (!filter) | |
5286 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5287 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5288 | |
06d2e8f3 MK |
5289 | /* advertise type-5 routes if needed */ |
5290 | update_advertise_vrf_routes(bgp_vrf); | |
5291 | ||
5ba238b7 MK |
5292 | /* install all remote routes belonging to this l3vni into correspondng |
5293 | * vrf */ | |
5294 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5295 | |
5296 | return 0; | |
5297 | } | |
5298 | ||
996c9314 | 5299 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5300 | { |
5301 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5302 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5303 | struct listnode *node = NULL; | |
18abc1eb | 5304 | struct listnode *next = NULL; |
f1f8b53c | 5305 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5306 | |
5307 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5308 | if (!bgp_vrf) { | |
996c9314 LB |
5309 | zlog_err( |
5310 | "Cannot process L3VNI %u Del - Could not find BGP instance", | |
5311 | l3vni); | |
fe1dc5a3 MK |
5312 | return -1; |
5313 | } | |
5314 | ||
f1f8b53c MK |
5315 | bgp_def = bgp_get_default(); |
5316 | if (!bgp_def) { | |
996c9314 LB |
5317 | zlog_err( |
5318 | "Cannot process L3VNI %u Del - Could not find default BGP instance", | |
5319 | l3vni); | |
f1f8b53c MK |
5320 | return -1; |
5321 | } | |
5322 | ||
1eb88002 | 5323 | /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will |
523cafc4 | 5324 | * take care of uninstalling the routes from zebra |
5325 | */ | |
1eb88002 MK |
5326 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) |
5327 | uninstall_routes_for_vrf(bgp_vrf); | |
5ba238b7 | 5328 | |
06d2e8f3 MK |
5329 | /* delete/withdraw all type-5 routes */ |
5330 | delete_withdraw_vrf_routes(bgp_vrf); | |
5331 | ||
fe1dc5a3 MK |
5332 | /* remove the l3vni from vrf instance */ |
5333 | bgp_vrf->l3vni = 0; | |
5334 | ||
5335 | /* remove the Rmac from the BGP vrf */ | |
5336 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5337 | ||
c581d8b0 | 5338 | /* delete RD/RT */ |
23a06e11 | 5339 | if (bgp_vrf->vrf_import_rtl && !list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5340 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5341 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 MK |
5342 | } |
5343 | if (bgp_vrf->vrf_export_rtl && !list_isempty(bgp_vrf->vrf_export_rtl)) { | |
5ba238b7 | 5344 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5345 | } |
fe1dc5a3 | 5346 | |
f1f8b53c | 5347 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5348 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5349 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5350 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5351 | update_routes_for_vni(bgp_def, vpn); | |
5352 | } | |
5353 | } | |
fe1dc5a3 | 5354 | |
18abc1eb | 5355 | /* If any L2VNIs point to this instance, unlink them. */ |
5356 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5357 | bgpevpn_unlink_from_l3vni(vpn); | |
5358 | ||
fe1dc5a3 MK |
5359 | /* Delete the instance if it was autocreated */ |
5360 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5361 | bgp_delete(bgp_vrf); | |
5362 | ||
5363 | return 0; | |
5364 | } | |
5365 | ||
128ea8ab | 5366 | /* |
5367 | * Handle del of a local VNI. | |
5368 | */ | |
d62a17ae | 5369 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5370 | { |
d62a17ae | 5371 | struct bgpevpn *vpn; |
128ea8ab | 5372 | |
d62a17ae | 5373 | if (!bgp->vnihash) { |
5374 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
5375 | return -1; | |
5376 | } | |
128ea8ab | 5377 | |
d62a17ae | 5378 | /* Locate VNI hash */ |
5379 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5380 | if (!vpn) { | |
1e00627b | 5381 | if (bgp_debug_zebra(NULL)) |
3518f352 DS |
5382 | zlog_warn( |
5383 | "%u: VNI hash entry for VNI %u not found at DEL", | |
5384 | bgp->vrf_id, vni); | |
d62a17ae | 5385 | return 0; |
5386 | } | |
128ea8ab | 5387 | |
d62a17ae | 5388 | /* Remove all local EVPN routes and schedule for processing (to |
5389 | * withdraw from peers). | |
5390 | */ | |
5391 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5392 | |
db0e1937 MK |
5393 | /* |
5394 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5395 | */ | |
5396 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5397 | ||
d62a17ae | 5398 | /* Clear "live" flag and see if hash needs to be freed. */ |
5399 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5400 | if (!is_vni_configured(vpn)) | |
5401 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5402 | |
d62a17ae | 5403 | return 0; |
128ea8ab | 5404 | } |
5405 | ||
5406 | /* | |
d1911c26 | 5407 | * Handle add (or update) of a local VNI. The VNI changes we care |
5408 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5409 | */ |
d62a17ae | 5410 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5411 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5412 | { |
5413 | struct bgpevpn *vpn; | |
5414 | struct prefix_evpn p; | |
5415 | ||
5416 | if (!bgp->vnihash) { | |
5417 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
5418 | return -1; | |
5419 | } | |
5420 | ||
5421 | /* Lookup VNI. If present and no change, exit. */ | |
5422 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5423 | if (vpn) { |
29c53922 | 5424 | |
d1911c26 | 5425 | if (is_vni_live(vpn) |
5426 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5427 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5428 | /* Probably some other param has changed that we don't | |
5429 | * care about. */ | |
5430 | return 0; | |
5431 | ||
5432 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5433 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5434 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5435 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5436 | bgpevpn_link_to_l3vni(vpn); |
5437 | } | |
29c53922 | 5438 | |
d1911c26 | 5439 | /* If tunnel endpoint IP has changed, update (and delete prior |
5440 | * type-3 route, if needed.) | |
5441 | */ | |
5442 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5443 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5444 | |
d1911c26 | 5445 | /* Update all routes with new endpoint IP and/or export RT |
5446 | * for VRFs | |
5447 | */ | |
5448 | if (is_vni_live(vpn)) | |
5449 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5450 | } |
5451 | ||
5452 | /* Create or update as appropriate. */ | |
5453 | if (!vpn) { | |
29c53922 | 5454 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5455 | if (!vpn) { |
5456 | zlog_err( | |
5457 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
5458 | bgp->vrf_id, vni); | |
5459 | return -1; | |
5460 | } | |
5461 | } | |
5462 | ||
db0e1937 | 5463 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5464 | if (is_vni_live(vpn)) |
5465 | return 0; | |
5466 | ||
d62a17ae | 5467 | /* Mark as "live" */ |
5468 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5469 | ||
db0e1937 MK |
5470 | /* tunnel is now active, add tunnel-ip to db */ |
5471 | bgp_tip_add(bgp, &originator_ip); | |
5472 | ||
5473 | /* filter routes as nexthop database has changed */ | |
5474 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5475 | ||
d62a17ae | 5476 | /* Create EVPN type-3 route and schedule for processing. */ |
5477 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5478 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
5479 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
5480 | bgp->vrf_id, vni); | |
5481 | return -1; | |
5482 | } | |
5483 | ||
5484 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5485 | * VNI, | |
5486 | * install them. | |
5487 | */ | |
5488 | install_routes_for_vni(bgp, vpn); | |
5489 | ||
d7d97010 MK |
5490 | /* If we are advertising gateway mac-ip |
5491 | It needs to be conveyed again to zebra */ | |
5492 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5493 | ||
d62a17ae | 5494 | return 0; |
b18825eb | 5495 | } |
14c1a7bf | 5496 | |
50f74cf1 | 5497 | /* |
5498 | * bgp_evpn_local_es_del | |
5499 | */ | |
5500 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5501 | esi_t *esi, | |
5502 | struct ipaddr *originator_ip) | |
5503 | { | |
5504 | char buf[ESI_STR_LEN]; | |
5505 | struct evpnes *es = NULL; | |
5506 | ||
5507 | if (!bgp->esihash) { | |
5508 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5509 | return -1; | |
5510 | } | |
5511 | ||
5512 | /* Lookup ESI hash - should exist. */ | |
5513 | es = bgp_evpn_lookup_es(bgp, esi); | |
5514 | if (!es) { | |
5515 | zlog_warn("%u: ESI hash entry for ESI %s at Local ES DEL", | |
5516 | bgp->vrf_id, | |
5517 | esi_to_str(esi, buf, sizeof(buf))); | |
5518 | return -1; | |
5519 | } | |
5520 | ||
5521 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5522 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5523 | */ |
5524 | delete_routes_for_es(bgp, es); | |
5525 | ||
5526 | /* free the hash entry */ | |
5527 | bgp_evpn_es_free(bgp, es); | |
5528 | ||
5529 | return 0; | |
5530 | } | |
5531 | ||
5532 | /* | |
5533 | * bgp_evpn_local_es_add | |
5534 | */ | |
5535 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5536 | esi_t *esi, | |
5537 | struct ipaddr *originator_ip) | |
5538 | { | |
5539 | char buf[ESI_STR_LEN]; | |
5540 | struct evpnes *es = NULL; | |
5541 | struct prefix_evpn p; | |
5542 | ||
5543 | if (!bgp->esihash) { | |
5544 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5545 | return -1; | |
5546 | } | |
5547 | ||
5548 | /* create the new es */ | |
2bb9eff4 | 5549 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5550 | if (!es) { |
5551 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5552 | if (!es) { | |
5553 | zlog_err( | |
5554 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
5555 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5556 | return -1; | |
5557 | } | |
5558 | } | |
5559 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5560 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5561 | ||
5562 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5563 | if (update_evpn_type4_route(bgp, es, &p)) { | |
5564 | zlog_err("%u: Type4 route creation failure for ESI %s", | |
5565 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5566 | return -1; | |
5567 | } | |
5568 | ||
5569 | /* import all remote ES routes in th ES table */ | |
5570 | install_routes_for_es(bgp, es); | |
5571 | ||
5572 | return 0; | |
5573 | } | |
5574 | ||
7724c0a1 | 5575 | /* |
5576 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5577 | * EVPN routes from peers. | |
5578 | */ | |
d62a17ae | 5579 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5580 | { |
9d303b37 DL |
5581 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5582 | void *))cleanup_vni_on_disable, | |
5583 | bgp); | |
7724c0a1 | 5584 | } |
5585 | ||
14c1a7bf | 5586 | /* |
5587 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5588 | * BGP instance (default) is being freed. | |
5589 | */ | |
d62a17ae | 5590 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5591 | { |
d62a17ae | 5592 | if (bgp->vnihash) |
9d303b37 DL |
5593 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5594 | void *))free_vni_entry, | |
5595 | bgp); | |
d62a17ae | 5596 | if (bgp->import_rt_hash) |
5597 | hash_free(bgp->import_rt_hash); | |
5598 | bgp->import_rt_hash = NULL; | |
10ebe1ab MK |
5599 | if (bgp->vrf_import_rt_hash) |
5600 | hash_free(bgp->vrf_import_rt_hash); | |
5601 | bgp->vrf_import_rt_hash = NULL; | |
d62a17ae | 5602 | if (bgp->vnihash) |
5603 | hash_free(bgp->vnihash); | |
5604 | bgp->vnihash = NULL; | |
50f74cf1 | 5605 | if (bgp->esihash) |
5606 | hash_free(bgp->esihash); | |
5607 | bgp->esihash = NULL; | |
c581d8b0 | 5608 | if (bgp->vrf_import_rtl) |
bb7a24ab | 5609 | list_delete_and_null(&bgp->vrf_import_rtl); |
c581d8b0 | 5610 | if (bgp->vrf_export_rtl) |
bb7a24ab | 5611 | list_delete_and_null(&bgp->vrf_export_rtl); |
6a8657d0 | 5612 | if (bgp->l2vnis) |
bb7a24ab | 5613 | list_delete_and_null(&bgp->l2vnis); |
14c1a7bf | 5614 | } |
5615 | ||
5616 | /* | |
5617 | * Initialization for EVPN | |
5618 | * Create | |
5619 | * VNI hash table | |
5620 | * hash for RT to VNI | |
14c1a7bf | 5621 | */ |
d62a17ae | 5622 | void bgp_evpn_init(struct bgp *bgp) |
5623 | { | |
5624 | bgp->vnihash = | |
5625 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5626 | bgp->esihash = |
5627 | hash_create(esi_hash_keymake, esi_cmp, | |
5628 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5629 | bgp->import_rt_hash = |
5630 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5631 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5632 | bgp->vrf_import_rt_hash = |
5633 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5634 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5635 | bgp->vrf_import_rtl = list_new(); |
5636 | bgp->vrf_import_rtl->cmp = | |
5637 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5638 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5639 | bgp->vrf_export_rtl = list_new(); |
5640 | bgp->vrf_export_rtl->cmp = | |
5641 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5642 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5643 | bgp->l2vnis = list_new(); |
996c9314 | 5644 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5645 | } |
10ebe1ab MK |
5646 | |
5647 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5648 | { | |
5649 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5650 | } |