]>
Commit | Line | Data |
---|---|---|
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; | |
1525e99f DS |
699 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
700 | attr->ecommunity = | |
701 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 702 | |
703 | /* add the router mac extended community */ | |
704 | if (!is_zero_mac(&attr->rmac)) { | |
705 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
706 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
707 | ecom_rmac.size = 1; | |
708 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
709 | attr->ecommunity = |
710 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 711 | } |
712 | ||
713 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
714 | } | |
715 | ||
128ea8ab | 716 | /* |
1ec31309 | 717 | * Build extended communities for EVPN route. |
718 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
719 | * and ENCAP extended communities are applicable for all routes. | |
720 | * The default gateway extended community and MAC mobility (sticky) extended | |
721 | * community are added as needed based on passed settings - only for type-2 | |
722 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
723 | * added, if present, based on passed settings - only for non-link-local | |
724 | * type-2 routes. | |
128ea8ab | 725 | */ |
7ec156a9 | 726 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 727 | int add_l3_ecomm) |
128ea8ab | 728 | { |
d62a17ae | 729 | struct ecommunity ecom_encap; |
730 | struct ecommunity ecom_sticky; | |
ead40654 | 731 | struct ecommunity ecom_default_gw; |
bc59a672 | 732 | struct ecommunity ecom_rmac; |
d62a17ae | 733 | struct ecommunity_val eval; |
734 | struct ecommunity_val eval_sticky; | |
ead40654 | 735 | struct ecommunity_val eval_default_gw; |
bc59a672 | 736 | struct ecommunity_val eval_rmac; |
d62a17ae | 737 | bgp_encap_types tnl_type; |
738 | struct listnode *node, *nnode; | |
739 | struct ecommunity *ecom; | |
d7c0a89a | 740 | uint32_t seqnum; |
7a3e76f1 | 741 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 742 | |
d62a17ae | 743 | /* Encap */ |
744 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
745 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
746 | encode_encap_extcomm(tnl_type, &eval); | |
747 | ecom_encap.size = 1; | |
d7c0a89a | 748 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 749 | |
d62a17ae | 750 | /* Add Encap */ |
751 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 752 | |
7a3e76f1 | 753 | /* Add the export RTs for L2VNI */ |
d62a17ae | 754 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
755 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 756 | |
1ec31309 | 757 | /* Add the export RTs for L3VNI if told to - caller determines |
758 | * when this should be done. | |
523cafc4 | 759 | */ |
1ec31309 | 760 | if (add_l3_ecomm) { |
7ec156a9 MK |
761 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
762 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
763 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
764 | ecom)) | |
996c9314 LB |
765 | attr->ecommunity = ecommunity_merge( |
766 | attr->ecommunity, ecom); | |
7ec156a9 | 767 | } |
f1f8b53c | 768 | } |
7a3e76f1 | 769 | |
1ec31309 | 770 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 771 | if (attr->sticky) { |
772 | seqnum = 0; | |
773 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
774 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
775 | ecom_sticky.size = 1; | |
d7c0a89a | 776 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 777 | attr->ecommunity = |
778 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
779 | } | |
c85c03c7 | 780 | |
1ec31309 | 781 | /* Add RMAC, if told to. */ |
782 | if (add_l3_ecomm) { | |
bc59a672 MK |
783 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
784 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
785 | ecom_rmac.size = 1; | |
786 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
787 | attr->ecommunity = |
788 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
789 | } |
790 | ||
1ec31309 | 791 | /* Add default gateway, if needed. */ |
ead40654 MK |
792 | if (attr->default_gw) { |
793 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
794 | encode_default_gw_extcomm(&eval_default_gw); | |
795 | ecom_default_gw.size = 1; | |
796 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
797 | attr->ecommunity = |
798 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
799 | } |
800 | ||
d62a17ae | 801 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 802 | } |
803 | ||
804 | /* | |
805 | * Add MAC mobility extended community to attribute. | |
806 | */ | |
d7c0a89a | 807 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 808 | { |
809 | struct ecommunity ecom_tmp; | |
810 | struct ecommunity_val eval; | |
d7c0a89a | 811 | uint8_t *ecom_val_ptr; |
d62a17ae | 812 | int i; |
d7c0a89a | 813 | uint8_t *pnt; |
d62a17ae | 814 | int type = 0; |
815 | int sub_type = 0; | |
816 | ||
817 | /* Build MM */ | |
818 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
819 | ||
820 | /* Find current MM ecommunity */ | |
421bb26a | 821 | ecom_val_ptr = NULL; |
d62a17ae | 822 | |
823 | if (attr->ecommunity) { | |
824 | for (i = 0; i < attr->ecommunity->size; i++) { | |
825 | pnt = attr->ecommunity->val + (i * 8); | |
826 | type = *pnt++; | |
827 | sub_type = *pnt++; | |
828 | ||
829 | if (type == ECOMMUNITY_ENCODE_EVPN | |
830 | && sub_type | |
831 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
832 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
833 | + (i * 8)); | |
d62a17ae | 834 | break; |
835 | } | |
836 | } | |
837 | } | |
838 | ||
839 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
840 | if (ecom_val_ptr) { |
841 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 842 | } |
843 | /* Add MM to existing */ | |
844 | else { | |
845 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
846 | ecom_tmp.size = 1; | |
d7c0a89a | 847 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 848 | |
f9a78910 DS |
849 | if (attr->ecommunity) |
850 | attr->ecommunity = | |
851 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
852 | else | |
853 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 854 | } |
128ea8ab | 855 | } |
856 | ||
857 | /* Install EVPN route into zebra. */ | |
d62a17ae | 858 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
859 | struct prefix_evpn *p, | |
d7c0a89a | 860 | struct in_addr remote_vtep_ip, uint8_t flags) |
128ea8ab | 861 | { |
d62a17ae | 862 | int ret; |
128ea8ab | 863 | |
d62a17ae | 864 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
865 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
ead40654 | 866 | 1, flags); |
d62a17ae | 867 | else |
868 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 869 | |
d62a17ae | 870 | return ret; |
128ea8ab | 871 | } |
872 | ||
873 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 874 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
875 | struct prefix_evpn *p, | |
876 | struct in_addr remote_vtep_ip) | |
128ea8ab | 877 | { |
d62a17ae | 878 | int ret; |
128ea8ab | 879 | |
d62a17ae | 880 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
881 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
882 | 0, 0); | |
883 | else | |
884 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 885 | |
d62a17ae | 886 | return ret; |
128ea8ab | 887 | } |
888 | ||
889 | /* | |
890 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
891 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
892 | * from peers. | |
893 | */ | |
d62a17ae | 894 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
895 | struct bgp_node *rn, | |
896 | struct bgp_info *old_local) | |
128ea8ab | 897 | { |
d62a17ae | 898 | struct bgp_node *global_rn; |
899 | struct bgp_info *ri; | |
900 | afi_t afi = AFI_L2VPN; | |
901 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 902 | |
d62a17ae | 903 | /* Locate route node in the global EVPN routing table. Note that |
904 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
905 | * L3VPN routes. | |
906 | */ | |
907 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
908 | (struct prefix *)&rn->p, &vpn->prd); | |
909 | if (global_rn) { | |
910 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 911 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
128ea8ab | 912 | |
d62a17ae | 913 | /* Schedule for processing - withdraws to peers happen from |
914 | * this table. | |
915 | */ | |
916 | if (ri) | |
917 | bgp_process(bgp, global_rn, afi, safi); | |
918 | bgp_unlock_node(global_rn); | |
919 | } | |
128ea8ab | 920 | |
d62a17ae | 921 | /* Delete route entry in the VNI route table, caller to remove. */ |
922 | bgp_info_delete(rn, old_local); | |
128ea8ab | 923 | } |
924 | ||
50f74cf1 | 925 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
926 | { | |
927 | struct in_addr *ip; | |
928 | ||
929 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
930 | if (!ip) | |
931 | return NULL; | |
932 | ||
933 | ip->s_addr = vtep.s_addr; | |
934 | return ip; | |
935 | } | |
936 | ||
937 | static void es_vtep_free(struct in_addr *ip) | |
938 | { | |
939 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
940 | } | |
941 | ||
942 | /* check if VTEP is already part of the list */ | |
943 | static int is_vtep_present_in_list(struct list *list, | |
944 | struct in_addr vtep) | |
945 | { | |
946 | struct listnode *node = NULL; | |
947 | struct in_addr *tmp; | |
948 | ||
949 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
950 | if (tmp->s_addr == vtep.s_addr) | |
951 | return 1; | |
952 | } | |
953 | return 0; | |
954 | } | |
955 | ||
2bb9eff4 DS |
956 | /* |
957 | * Best path for ES route was changed, | |
958 | * update the list of VTEPs for this ES | |
959 | */ | |
50f74cf1 | 960 | static int evpn_es_install_vtep(struct bgp *bgp, |
961 | struct evpnes *es, | |
962 | struct prefix_evpn *p, | |
963 | struct in_addr rvtep) | |
964 | { | |
965 | struct in_addr *vtep_ip; | |
966 | ||
967 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
968 | return 0; | |
969 | ||
970 | ||
971 | vtep_ip = es_vtep_new(rvtep); | |
972 | if (vtep_ip) | |
973 | listnode_add_sort(es->vtep_list, vtep_ip); | |
974 | return 0; | |
975 | } | |
976 | ||
2bb9eff4 DS |
977 | /* |
978 | * Best path for ES route was changed, | |
979 | * update the list of VTEPs for this ES | |
980 | */ | |
50f74cf1 | 981 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
982 | struct evpnes *es, | |
983 | struct prefix_evpn *p, | |
984 | struct in_addr rvtep) | |
985 | { | |
986 | struct listnode *node, *nnode, *node_to_del = NULL; | |
987 | struct in_addr *tmp; | |
988 | ||
989 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
990 | if (tmp->s_addr == rvtep.s_addr) { | |
991 | es_vtep_free(tmp); | |
992 | node_to_del = node; | |
993 | } | |
994 | } | |
995 | ||
996 | if (node_to_del) | |
997 | list_delete_node(es->vtep_list, node_to_del); | |
998 | ||
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | /* | |
1003 | * Calculate the best path for a ES(type-4) route. | |
1004 | */ | |
1005 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1006 | struct evpnes *es, | |
1007 | struct bgp_node *rn) | |
1008 | { | |
1009 | int ret = 0; | |
1010 | afi_t afi = AFI_L2VPN; | |
1011 | safi_t safi = SAFI_EVPN; | |
1012 | struct bgp_info *old_select; /* old best */ | |
1013 | struct bgp_info *new_select; /* new best */ | |
1014 | struct bgp_info_pair old_and_new; | |
1015 | ||
1016 | /* Compute the best path. */ | |
1017 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1018 | &old_and_new, afi, safi); | |
1019 | old_select = old_and_new.old; | |
1020 | new_select = old_and_new.new; | |
1021 | ||
2bb9eff4 DS |
1022 | /* |
1023 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1024 | * updated |
1025 | */ | |
1026 | if (old_select && old_select == new_select | |
1027 | && old_select->type == ZEBRA_ROUTE_BGP | |
1028 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1029 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1030 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1031 | && !bgp->addpath_tx_used[afi][safi]) { | |
1032 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1033 | ret = evpn_es_install_vtep(bgp, es, | |
1034 | (struct prefix_evpn *)&rn->p, | |
1035 | old_select->attr->nexthop); | |
1036 | } | |
1037 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1038 | bgp_zebra_clear_route_change_flags(rn); | |
1039 | return ret; | |
1040 | } | |
1041 | ||
1042 | /* If the user did a "clear" this flag will be set */ | |
1043 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1044 | ||
2bb9eff4 DS |
1045 | /* |
1046 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1047 | * into the zebra RIB. |
1048 | */ | |
1049 | if (old_select || new_select) | |
1050 | bgp_bump_version(rn); | |
1051 | ||
1052 | if (old_select) | |
1053 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1054 | if (new_select) { | |
1055 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1056 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1057 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1058 | } | |
1059 | ||
1060 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1061 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1062 | ret = evpn_es_install_vtep(bgp, es, | |
1063 | (struct prefix_evpn *)&rn->p, | |
1064 | new_select->attr->nexthop); | |
1065 | } else { | |
1066 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1067 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1068 | ret = evpn_es_uninstall_vtep( |
1069 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1070 | old_select->attr->nexthop); | |
50f74cf1 | 1071 | } |
1072 | ||
1073 | /* Clear any route change flags. */ | |
1074 | bgp_zebra_clear_route_change_flags(rn); | |
1075 | ||
1076 | /* Reap old select bgp_info, if it has been removed */ | |
1077 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1078 | bgp_info_reap(rn, old_select); | |
1079 | ||
1080 | return ret; | |
1081 | } | |
1082 | ||
128ea8ab | 1083 | /* |
1084 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1085 | * if appropriate. | |
1086 | */ | |
d62a17ae | 1087 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1088 | struct bgp_node *rn) | |
1089 | { | |
1090 | struct bgp_info *old_select, *new_select; | |
1091 | struct bgp_info_pair old_and_new; | |
1092 | afi_t afi = AFI_L2VPN; | |
1093 | safi_t safi = SAFI_EVPN; | |
1094 | int ret = 0; | |
d7c0a89a | 1095 | uint8_t flags = 0; |
d62a17ae | 1096 | |
1097 | /* Compute the best path. */ | |
1098 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1099 | afi, safi); | |
1100 | old_select = old_and_new.old; | |
1101 | new_select = old_and_new.new; | |
1102 | ||
1103 | /* If the best path hasn't changed - see if there is still something to | |
1104 | * update | |
1105 | * to zebra RIB. | |
1106 | */ | |
1107 | if (old_select && old_select == new_select | |
1108 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1109 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1110 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1111 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1112 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
1113 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1114 | if (old_select->attr->sticky) | |
1115 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1116 | if (old_select->attr->default_gw) | |
1117 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
996c9314 LB |
1118 | ret = evpn_zebra_install( |
1119 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
1120 | old_select->attr->nexthop, flags); | |
ead40654 | 1121 | } |
d62a17ae | 1122 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
1123 | bgp_zebra_clear_route_change_flags(rn); | |
1124 | return ret; | |
1125 | } | |
1126 | ||
1127 | /* If the user did a "clear" this flag will be set */ | |
1128 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1129 | ||
1130 | /* bestpath has changed; update relevant fields and install or uninstall | |
1131 | * into the zebra RIB. | |
1132 | */ | |
1133 | if (old_select || new_select) | |
1134 | bgp_bump_version(rn); | |
1135 | ||
1136 | if (old_select) | |
1137 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1138 | if (new_select) { | |
1139 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1140 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1141 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1142 | } | |
1143 | ||
1144 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1145 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1146 | flags = 0; |
1147 | if (new_select->attr->sticky) | |
1148 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1149 | if (new_select->attr->default_gw) | |
1150 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
d62a17ae | 1151 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
996c9314 | 1152 | new_select->attr->nexthop, flags); |
d62a17ae | 1153 | /* If an old best existed and it was a "local" route, the only |
1154 | * reason | |
1155 | * it would be supplanted is due to MAC mobility procedures. So, | |
1156 | * we | |
1157 | * need to do an implicit delete and withdraw that route from | |
1158 | * peers. | |
1159 | */ | |
1160 | if (old_select && old_select->peer == bgp->peer_self | |
1161 | && old_select->type == ZEBRA_ROUTE_BGP | |
1162 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1163 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1164 | } else { | |
1165 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1166 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1167 | ret = evpn_zebra_uninstall(bgp, vpn, |
1168 | (struct prefix_evpn *)&rn->p, | |
1169 | old_select->attr->nexthop); | |
1170 | } | |
1171 | ||
1172 | /* Clear any route change flags. */ | |
1173 | bgp_zebra_clear_route_change_flags(rn); | |
1174 | ||
1175 | /* Reap old select bgp_info, if it has been removed */ | |
1176 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1177 | bgp_info_reap(rn, old_select); | |
1178 | ||
1179 | return ret; | |
128ea8ab | 1180 | } |
1181 | ||
ead40654 MK |
1182 | /* |
1183 | * Return true if the local ri for this rn is of type gateway mac | |
1184 | */ | |
1185 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1186 | { | |
996c9314 LB |
1187 | struct bgp_info *tmp_ri = NULL; |
1188 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
1189 | |
1190 | local_ri = NULL; | |
1191 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1192 | if (tmp_ri->peer == bgp->peer_self | |
1193 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1194 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1195 | local_ri = tmp_ri; | |
1196 | } | |
1197 | ||
1198 | if (!local_ri) | |
1199 | return 0; | |
1200 | ||
1201 | return local_ri->attr->default_gw; | |
1202 | } | |
1203 | ||
c85c03c7 | 1204 | |
1205 | /* | |
1206 | * Return true if the local ri for this rn has sticky set | |
1207 | */ | |
d62a17ae | 1208 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1209 | { |
d62a17ae | 1210 | struct bgp_info *tmp_ri; |
1211 | struct bgp_info *local_ri; | |
c85c03c7 | 1212 | |
d62a17ae | 1213 | local_ri = NULL; |
1214 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1215 | if (tmp_ri->peer == bgp->peer_self | |
1216 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1217 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1218 | local_ri = tmp_ri; | |
1219 | } | |
c85c03c7 | 1220 | |
d62a17ae | 1221 | if (!local_ri) |
1222 | return 0; | |
c85c03c7 | 1223 | |
d62a17ae | 1224 | return local_ri->attr->sticky; |
c85c03c7 | 1225 | } |
1226 | ||
50f74cf1 | 1227 | /* |
1228 | * create or update EVPN type4 route entry. | |
1229 | * This could be in the ES table or the global table. | |
1230 | * TODO: handle remote ES (type4) routes as well | |
1231 | */ | |
1232 | static int update_evpn_type4_route_entry(struct bgp *bgp, | |
1233 | struct evpnes *es, | |
1234 | afi_t afi, safi_t safi, | |
1235 | struct bgp_node *rn, | |
1236 | struct attr *attr, | |
1237 | int add, | |
1238 | struct bgp_info **ri, | |
1239 | int *route_changed) | |
1240 | { | |
1241 | char buf[ESI_STR_LEN]; | |
1242 | char buf1[INET6_ADDRSTRLEN]; | |
1243 | struct bgp_info *tmp_ri = NULL; | |
1244 | struct bgp_info *local_ri = NULL; /* local route entry if any */ | |
1245 | struct bgp_info *remote_ri = NULL; /* remote route entry if any */ | |
1246 | struct attr *attr_new = NULL; | |
1247 | struct prefix_evpn *evp = NULL; | |
1248 | ||
1249 | *ri = NULL; | |
1250 | *route_changed = 1; | |
1251 | evp = (struct prefix_evpn *)&rn->p; | |
1252 | ||
1253 | /* locate the local and remote entries if any */ | |
1254 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1255 | if (tmp_ri->peer == bgp->peer_self && | |
1256 | tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1257 | tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1258 | local_ri = tmp_ri; | |
1259 | if (tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1260 | tmp_ri->sub_type == BGP_ROUTE_IMPORTED && | |
1261 | CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) | |
1262 | remote_ri = tmp_ri; | |
1263 | } | |
1264 | ||
1265 | /* we don't expect to see a remote_ri at this point. | |
1266 | * An ES route has esi + vtep_ip as the key, | |
1267 | * We shouldn't see the same route from any other vtep. | |
1268 | */ | |
1269 | if (remote_ri) { | |
1270 | zlog_err( | |
1271 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", | |
1272 | bgp->vrf_id, | |
1273 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1274 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1275 | return -1; | |
1276 | } | |
1277 | ||
1278 | if (!local_ri && !add) | |
1279 | return 0; | |
1280 | ||
1281 | /* create or update the entry */ | |
1282 | if (!local_ri) { | |
1283 | ||
1284 | /* Add or update attribute to hash */ | |
1285 | attr_new = bgp_attr_intern(attr); | |
1286 | ||
1287 | /* Create new route with its attribute. */ | |
1288 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, | |
1289 | 0, bgp->peer_self, attr_new, rn); | |
1290 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1291 | ||
1292 | /* add the newly created path to the route-node */ | |
1293 | bgp_info_add(rn, tmp_ri); | |
1294 | } else { | |
1295 | tmp_ri = local_ri; | |
1296 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1297 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1298 | *route_changed = 0; | |
1299 | else { | |
1300 | /* The attribute has changed. | |
1301 | * Add (or update) attribute to hash. */ | |
1302 | attr_new = bgp_attr_intern(attr); | |
1303 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1304 | ||
1305 | /* Restore route, if needed. */ | |
1306 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1307 | bgp_info_restore(rn, tmp_ri); | |
1308 | ||
1309 | /* Unintern existing, set to new. */ | |
1310 | bgp_attr_unintern(&tmp_ri->attr); | |
1311 | tmp_ri->attr = attr_new; | |
1312 | tmp_ri->uptime = bgp_clock(); | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | /* Return back the route entry. */ | |
1317 | *ri = tmp_ri; | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | /* update evpn es (type-4) route */ | |
1322 | static int update_evpn_type4_route(struct bgp *bgp, | |
1323 | struct evpnes *es, | |
1324 | struct prefix_evpn *p) | |
1325 | { | |
1326 | int ret = 0; | |
1327 | int route_changed = 0; | |
1328 | char buf[ESI_STR_LEN]; | |
1329 | char buf1[INET6_ADDRSTRLEN]; | |
1330 | afi_t afi = AFI_L2VPN; | |
1331 | safi_t safi = SAFI_EVPN; | |
1332 | struct attr attr; | |
1333 | struct attr *attr_new = NULL; | |
1334 | struct bgp_node *rn = NULL; | |
1335 | struct bgp_info *ri = NULL; | |
1336 | ||
1337 | memset(&attr, 0, sizeof(struct attr)); | |
1338 | ||
1339 | /* Build path-attribute for this route. */ | |
1340 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1341 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1342 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1343 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1344 | ||
1345 | /* Set up extended community. */ | |
1346 | build_evpn_type4_route_extcomm(es, &attr); | |
1347 | ||
1348 | /* First, create (or fetch) route node within the ESI. */ | |
1349 | /* NOTE: There is no RD here. */ | |
1350 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1351 | ||
1352 | /* Create or update route entry. */ | |
1353 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, | |
1354 | &attr, 1, &ri, | |
1355 | &route_changed); | |
1356 | if (ret != 0) { | |
1357 | zlog_err("%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1358 | bgp->vrf_id, | |
1359 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1360 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1361 | } | |
1362 | ||
1363 | assert(ri); | |
1364 | attr_new = ri->attr; | |
1365 | ||
1366 | /* Perform route selection; | |
1367 | * this is just to set the flags correctly | |
1368 | * as local route in the ES always wins. | |
1369 | */ | |
1370 | evpn_es_route_select_install(bgp, es, rn); | |
1371 | bgp_unlock_node(rn); | |
1372 | ||
1373 | /* If this is a new route or some attribute has changed, export the | |
1374 | * route to the global table. The route will be advertised to peers | |
1375 | * from there. Note that this table is a 2-level tree (RD-level + | |
1376 | * Prefix-level) similar to L3VPN routes. | |
1377 | */ | |
1378 | if (route_changed) { | |
1379 | struct bgp_info *global_ri; | |
1380 | ||
1381 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1382 | (struct prefix *)p, &es->prd); | |
1383 | update_evpn_type4_route_entry(bgp, es, afi, safi, | |
1384 | rn, attr_new, | |
1385 | 1, &global_ri, | |
1386 | &route_changed); | |
1387 | ||
1388 | /* Schedule for processing and unlock node. */ | |
1389 | bgp_process(bgp, rn, afi, safi); | |
1390 | bgp_unlock_node(rn); | |
1391 | } | |
1392 | ||
1393 | /* Unintern temporary. */ | |
1394 | aspath_unintern(&attr.aspath); | |
1395 | return 0; | |
1396 | } | |
1397 | ||
342dd0c6 | 1398 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1399 | struct bgp *bgp_vrf, afi_t afi, | |
1400 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1401 | struct attr *attr, int *route_changed) |
342dd0c6 | 1402 | { |
1403 | struct attr *attr_new = NULL; | |
1404 | struct bgp_info *ri = NULL; | |
1405 | mpls_label_t label = MPLS_INVALID_LABEL; | |
1406 | struct bgp_info *local_ri = NULL; | |
1407 | struct bgp_info *tmp_ri = NULL; | |
1408 | ||
5424b7ba | 1409 | *route_changed = 0; |
342dd0c6 | 1410 | /* locate the local route entry if any */ |
1411 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1412 | if (tmp_ri->peer == bgp_def->peer_self | |
1413 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1414 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1415 | local_ri = tmp_ri; | |
1416 | } | |
1417 | ||
2bb9eff4 DS |
1418 | /* |
1419 | * create a new route entry if one doesnt exist. | |
1420 | * Otherwise see if route attr has changed | |
523cafc4 | 1421 | */ |
342dd0c6 | 1422 | if (!local_ri) { |
1423 | ||
5424b7ba MK |
1424 | /* route has changed as this is the first entry */ |
1425 | *route_changed = 1; | |
1426 | ||
342dd0c6 | 1427 | /* Add (or update) attribute to hash. */ |
1428 | attr_new = bgp_attr_intern(attr); | |
1429 | ||
1430 | /* create the route info from attribute */ | |
1431 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1432 | bgp_def->peer_self, attr_new, rn); | |
1433 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1434 | ||
b57ba6d2 | 1435 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1436 | bgp_info_extra_get(ri); |
1437 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1438 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1439 | ri->extra->num_labels = 1; | |
342dd0c6 | 1440 | |
1441 | /* add the route entry to route node*/ | |
1442 | bgp_info_add(rn, ri); | |
1443 | } else { | |
1444 | ||
1445 | tmp_ri = local_ri; | |
1446 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1447 | |
1448 | /* attribute changed */ | |
1449 | *route_changed = 1; | |
1450 | ||
342dd0c6 | 1451 | /* The attribute has changed. */ |
1452 | /* Add (or update) attribute to hash. */ | |
1453 | attr_new = bgp_attr_intern(attr); | |
1454 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1455 | ||
1456 | /* Restore route, if needed. */ | |
1457 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1458 | bgp_info_restore(rn, tmp_ri); | |
1459 | ||
1460 | /* Unintern existing, set to new. */ | |
1461 | bgp_attr_unintern(&tmp_ri->attr); | |
1462 | tmp_ri->attr = attr_new; | |
1463 | tmp_ri->uptime = bgp_clock(); | |
1464 | } | |
1465 | } | |
1466 | return 0; | |
1467 | } | |
1468 | ||
1469 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1470 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1471 | struct attr *src_attr) | |
342dd0c6 | 1472 | { |
1473 | afi_t afi = AFI_L2VPN; | |
1474 | safi_t safi = SAFI_EVPN; | |
1475 | struct attr attr; | |
1476 | struct bgp_node *rn = NULL; | |
1477 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1478 | int route_changed = 0; |
342dd0c6 | 1479 | |
1480 | bgp_def = bgp_get_default(); | |
1481 | if (!bgp_def) | |
faafdfa8 | 1482 | return 0; |
342dd0c6 | 1483 | |
2f69f6d3 | 1484 | /* Build path attribute for this route - use the source attr, if |
1485 | * present, else treat as locally originated. | |
1486 | */ | |
1487 | if (src_attr) | |
1488 | bgp_attr_dup(&attr, src_attr); | |
1489 | else { | |
1490 | memset(&attr, 0, sizeof(struct attr)); | |
1491 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1492 | } | |
1493 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1494 | attr.nexthop = bgp_vrf->originator_ip; |
1495 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1496 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1497 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1498 | ||
1499 | /* Setup RT and encap extended community */ | |
1500 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1501 | ||
1502 | /* get the route node in global table */ | |
1503 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1504 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1505 | assert(rn); |
1506 | ||
1507 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1508 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1509 | &route_changed); | |
342dd0c6 | 1510 | |
1511 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1512 | if (route_changed) { |
1513 | bgp_process(bgp_def, rn, afi, safi); | |
1514 | bgp_unlock_node(rn); | |
1515 | } | |
342dd0c6 | 1516 | |
1517 | /* uninten temporary */ | |
5ee65f6f | 1518 | if (!src_attr) |
1519 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1520 | return 0; |
1521 | } | |
1522 | ||
128ea8ab | 1523 | /* |
1524 | * Create or update EVPN route entry. This could be in the VNI route table | |
1525 | * or the global route table. | |
1526 | */ | |
d62a17ae | 1527 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1528 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1529 | struct attr *attr, int add, int vni_table, | |
d7c0a89a | 1530 | struct bgp_info **ri, uint8_t flags) |
d62a17ae | 1531 | { |
1532 | struct bgp_info *tmp_ri; | |
1533 | struct bgp_info *local_ri, *remote_ri; | |
1534 | struct attr *attr_new; | |
b57ba6d2 | 1535 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1536 | uint32_t num_labels = 1; |
d62a17ae | 1537 | int route_change = 1; |
d7c0a89a | 1538 | uint8_t sticky = 0; |
b57ba6d2 | 1539 | struct prefix_evpn *evp; |
d62a17ae | 1540 | |
1541 | *ri = NULL; | |
b57ba6d2 MK |
1542 | evp = (struct prefix_evpn *)&rn->p; |
1543 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1544 | |
1545 | /* See if this is an update of an existing route, or a new add. Also, | |
1546 | * identify if already known from remote, and if so, the one with the | |
1547 | * highest sequence number; this is only when adding to the VNI routing | |
1548 | * table. | |
1549 | */ | |
1550 | local_ri = remote_ri = NULL; | |
1551 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1552 | if (tmp_ri->peer == bgp->peer_self | |
1553 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1554 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1555 | local_ri = tmp_ri; | |
1556 | if (vni_table) { | |
1557 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1558 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1559 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { |
1560 | if (!remote_ri) | |
1561 | remote_ri = tmp_ri; | |
1562 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1563 | > mac_mobility_seqnum(remote_ri->attr)) | |
1564 | remote_ri = tmp_ri; | |
1565 | } | |
1566 | } | |
1567 | } | |
1568 | ||
1569 | /* If route doesn't exist already, create a new one, if told to. | |
1570 | * Otherwise act based on whether the attributes of the route have | |
1571 | * changed or not. | |
1572 | */ | |
1573 | if (!local_ri && !add) | |
1574 | return 0; | |
1575 | ||
1576 | if (!local_ri) { | |
1577 | /* When learnt locally for the first time but already known from | |
1578 | * remote, we have to initiate appropriate MAC mobility steps. | |
50f74cf1 | 1579 | * This is applicable when updating the VNI routing table. |
1a98c087 MK |
1580 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1581 | * SVI) advertised in EVPN. | |
1582 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1583 | */ |
ead40654 | 1584 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) { |
d7c0a89a | 1585 | uint32_t cur_seqnum; |
d62a17ae | 1586 | |
1587 | /* Add MM extended community to route. */ | |
1588 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1589 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1590 | } | |
1591 | ||
1592 | /* Add (or update) attribute to hash. */ | |
1593 | attr_new = bgp_attr_intern(attr); | |
1594 | ||
1595 | /* Extract MAC mobility sequence number, if any. */ | |
1596 | attr_new->mm_seqnum = | |
1597 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1598 | attr_new->sticky = sticky; | |
1599 | ||
1600 | /* Create new route with its attribute. */ | |
1601 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1602 | bgp->peer_self, attr_new, rn); | |
1603 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1604 | bgp_info_extra_get(tmp_ri); | |
1605 | ||
1606 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1607 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1608 | |
1609 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1610 | * Only attach second label if we are advertising two labels for | |
1611 | * type-2 routes. | |
1612 | */ | |
996c9314 LB |
1613 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1614 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1615 | vni_t l3vni; |
1616 | ||
1617 | l3vni = bgpevpn_get_l3vni(vpn); | |
1618 | if (l3vni) { | |
1619 | vni2label(l3vni, &label[1]); | |
1620 | num_labels++; | |
1621 | } | |
1622 | } | |
d62a17ae | 1623 | |
b57ba6d2 MK |
1624 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1625 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1626 | bgp_info_add(rn, tmp_ri); |
1627 | } else { | |
1628 | tmp_ri = local_ri; | |
1629 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1630 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1631 | route_change = 0; | |
1632 | else { | |
c48d9f5f MK |
1633 | /* |
1634 | * The attributes have changed, type-2 routes needs to | |
1635 | * be advertised with right labels. | |
1636 | */ | |
1637 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1638 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1639 | && CHECK_FLAG(vpn->flags, | |
1640 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1641 | vni_t l3vni; |
1642 | ||
1643 | l3vni = bgpevpn_get_l3vni(vpn); | |
1644 | if (l3vni) { | |
1645 | vni2label(l3vni, &label[1]); | |
1646 | num_labels++; | |
1647 | } | |
1648 | } | |
1649 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1650 | tmp_ri->extra->num_labels = num_labels; | |
1651 | ||
d62a17ae | 1652 | /* The attribute has changed. */ |
1653 | /* Add (or update) attribute to hash. */ | |
1654 | attr_new = bgp_attr_intern(attr); | |
1655 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1656 | ||
1657 | /* Restore route, if needed. */ | |
1658 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1659 | bgp_info_restore(rn, tmp_ri); | |
1660 | ||
1661 | /* Unintern existing, set to new. */ | |
1662 | bgp_attr_unintern(&tmp_ri->attr); | |
1663 | tmp_ri->attr = attr_new; | |
1664 | tmp_ri->uptime = bgp_clock(); | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | /* Return back the route entry. */ | |
1669 | *ri = tmp_ri; | |
1670 | return route_change; | |
128ea8ab | 1671 | } |
1672 | ||
1673 | /* | |
1674 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1675 | * and schedule for processing. | |
1676 | */ | |
d62a17ae | 1677 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
d7c0a89a | 1678 | struct prefix_evpn *p, uint8_t flags) |
128ea8ab | 1679 | { |
d62a17ae | 1680 | struct bgp_node *rn; |
1681 | struct attr attr; | |
1682 | struct attr *attr_new; | |
1ec31309 | 1683 | int add_l3_ecomm = 0; |
d62a17ae | 1684 | struct bgp_info *ri; |
1685 | afi_t afi = AFI_L2VPN; | |
1686 | safi_t safi = SAFI_EVPN; | |
1687 | int route_change; | |
128ea8ab | 1688 | |
d62a17ae | 1689 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1690 | |
d62a17ae | 1691 | /* Build path-attribute for this route. */ |
1692 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1693 | attr.nexthop = vpn->originator_ip; | |
1694 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1695 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1696 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1697 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
be41eb68 MK |
1698 | |
1699 | /* PMSI is only needed for type-3 routes */ | |
1700 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1701 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1702 | ||
1ec31309 | 1703 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1704 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1705 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1706 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1707 | |
1ec31309 | 1708 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1709 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1710 | * these routes. | |
1711 | */ | |
1712 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1713 | (is_evpn_prefix_ipaddr_v4(p) || |
1714 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
1ec31309 | 1715 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) |
1716 | add_l3_ecomm = 1; | |
1717 | ||
1718 | /* Set up extended community. */ | |
1719 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1720 | |
d62a17ae | 1721 | /* First, create (or fetch) route node within the VNI. */ |
1722 | /* NOTE: There is no RD here. */ | |
1723 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1724 | |
d62a17ae | 1725 | /* Create or update route entry. */ |
1726 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1727 | 1, 1, &ri, flags); |
d62a17ae | 1728 | assert(ri); |
1729 | attr_new = ri->attr; | |
128ea8ab | 1730 | |
d62a17ae | 1731 | /* Perform route selection; this is just to set the flags correctly |
1732 | * as local route in the VNI always wins. | |
1733 | */ | |
1734 | evpn_route_select_install(bgp, vpn, rn); | |
1735 | bgp_unlock_node(rn); | |
128ea8ab | 1736 | |
d62a17ae | 1737 | /* If this is a new route or some attribute has changed, export the |
1738 | * route to the global table. The route will be advertised to peers | |
1739 | * from there. Note that this table is a 2-level tree (RD-level + | |
1740 | * Prefix-level) similar to L3VPN routes. | |
1741 | */ | |
1742 | if (route_change) { | |
1743 | struct bgp_info *global_ri; | |
128ea8ab | 1744 | |
d62a17ae | 1745 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1746 | (struct prefix *)p, &vpn->prd); | |
1747 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1748 | &global_ri, flags); |
128ea8ab | 1749 | |
d62a17ae | 1750 | /* Schedule for processing and unlock node. */ |
1751 | bgp_process(bgp, rn, afi, safi); | |
1752 | bgp_unlock_node(rn); | |
1753 | } | |
128ea8ab | 1754 | |
d62a17ae | 1755 | /* Unintern temporary. */ |
1756 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1757 | |
d62a17ae | 1758 | return 0; |
128ea8ab | 1759 | } |
1760 | ||
50f74cf1 | 1761 | /* |
1762 | * Delete EVPN route entry. | |
1763 | * The entry can be in ESI/VNI table or the global table. | |
1764 | */ | |
1765 | static void delete_evpn_route_entry(struct bgp *bgp, | |
1766 | afi_t afi, safi_t safi, | |
1767 | struct bgp_node *rn, | |
1768 | struct bgp_info **ri) | |
342dd0c6 | 1769 | { |
50f74cf1 | 1770 | struct bgp_info *tmp_ri; |
342dd0c6 | 1771 | |
1772 | *ri = NULL; | |
1773 | ||
50f74cf1 | 1774 | /* Now, find matching route. */ |
342dd0c6 | 1775 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) |
50f74cf1 | 1776 | if (tmp_ri->peer == bgp->peer_self |
342dd0c6 | 1777 | && tmp_ri->type == ZEBRA_ROUTE_BGP |
1778 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1779 | break; | |
1780 | ||
1781 | *ri = tmp_ri; | |
1782 | ||
1783 | /* Mark route for delete. */ | |
1784 | if (tmp_ri) | |
1785 | bgp_info_delete(rn, tmp_ri); | |
1786 | } | |
1787 | ||
50f74cf1 | 1788 | |
1789 | ||
1790 | /* Delete EVPN ES (type-4) route */ | |
1791 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1792 | struct evpnes *es, | |
1793 | struct prefix_evpn *p) | |
1794 | { | |
1795 | afi_t afi = AFI_L2VPN; | |
1796 | safi_t safi = SAFI_EVPN; | |
1797 | struct bgp_info *ri; | |
1798 | struct bgp_node *rn = NULL; /* rn in esi table */ | |
1799 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1800 | ||
1801 | /* First, locate the route node within the ESI. | |
1802 | * If it doesn't exist, ther is nothing to do. | |
1803 | * Note: there is no RD here. | |
1804 | */ | |
1805 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1806 | if (!rn) |
50f74cf1 | 1807 | return 0; |
1808 | ||
1809 | /* Next, locate route node in the global EVPN routing table. | |
1810 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1811 | */ | |
1812 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1813 | (struct prefix *)p, &es->prd); | |
1814 | if (global_rn) { | |
1815 | ||
1816 | /* Delete route entry in the global EVPN table. */ | |
1817 | delete_evpn_route_entry(bgp, afi, safi, | |
1818 | global_rn, &ri); | |
1819 | ||
1820 | /* Schedule for processing - withdraws to peers happen from | |
1821 | * this table. | |
1822 | */ | |
1823 | if (ri) | |
1824 | bgp_process(bgp, global_rn, afi, safi); | |
1825 | bgp_unlock_node(global_rn); | |
1826 | } | |
1827 | ||
1828 | /* | |
1829 | * Delete route entry in the ESI route table. | |
1830 | * This can just be removed. | |
1831 | */ | |
1832 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); | |
1833 | if (ri) | |
1834 | bgp_info_reap(rn, ri); | |
1835 | bgp_unlock_node(rn); | |
1836 | return 0; | |
1837 | } | |
1838 | ||
342dd0c6 | 1839 | /* Delete EVPN type5 route */ |
996c9314 | 1840 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1841 | { |
1842 | afi_t afi = AFI_L2VPN; | |
1843 | safi_t safi = SAFI_EVPN; | |
1844 | struct bgp_node *rn = NULL; | |
1845 | struct bgp_info *ri = NULL; | |
1846 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1847 | ||
1848 | bgp_def = bgp_get_default(); | |
1849 | if (!bgp_def) | |
faafdfa8 | 1850 | return 0; |
342dd0c6 | 1851 | |
1852 | /* locate the global route entry for this type-5 prefix */ | |
1853 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1854 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1855 | if (!rn) | |
1856 | return 0; | |
1857 | ||
50f74cf1 | 1858 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &ri); |
342dd0c6 | 1859 | if (ri) |
1860 | bgp_process(bgp_def, rn, afi, safi); | |
1861 | bgp_unlock_node(rn); | |
1862 | return 0; | |
1863 | } | |
1864 | ||
128ea8ab | 1865 | /* |
1866 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1867 | * schedule for processing. | |
1868 | */ | |
d62a17ae | 1869 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1870 | struct prefix_evpn *p) | |
1871 | { | |
1872 | struct bgp_node *rn, *global_rn; | |
1873 | struct bgp_info *ri; | |
1874 | afi_t afi = AFI_L2VPN; | |
1875 | safi_t safi = SAFI_EVPN; | |
1876 | ||
1877 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1878 | * there | |
1879 | * is nothing further to do. | |
1880 | */ | |
1881 | /* NOTE: There is no RD here. */ | |
1882 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1883 | if (!rn) | |
1884 | return 0; | |
1885 | ||
1886 | /* Next, locate route node in the global EVPN routing table. Note that | |
1887 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1888 | * L3VPN routes. | |
1889 | */ | |
1890 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1891 | (struct prefix *)p, &vpn->prd); | |
1892 | if (global_rn) { | |
1893 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 1894 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
d62a17ae | 1895 | |
1896 | /* Schedule for processing - withdraws to peers happen from | |
1897 | * this table. | |
1898 | */ | |
1899 | if (ri) | |
1900 | bgp_process(bgp, global_rn, afi, safi); | |
1901 | bgp_unlock_node(global_rn); | |
1902 | } | |
1903 | ||
1904 | /* Delete route entry in the VNI route table. This can just be removed. | |
1905 | */ | |
50f74cf1 | 1906 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 1907 | if (ri) |
1908 | bgp_info_reap(rn, ri); | |
1909 | bgp_unlock_node(rn); | |
1910 | ||
1911 | return 0; | |
128ea8ab | 1912 | } |
1913 | ||
1914 | /* | |
1915 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1916 | * be scheduled for advertise to peers. | |
1917 | */ | |
d62a17ae | 1918 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1919 | { | |
1920 | afi_t afi; | |
1921 | safi_t safi; | |
1922 | struct bgp_node *rn; | |
1923 | struct bgp_info *ri; | |
1924 | struct attr attr; | |
1925 | struct attr attr_sticky; | |
ead40654 | 1926 | struct attr attr_def_gw; |
1ec31309 | 1927 | struct attr attr_ip6_ll; |
d62a17ae | 1928 | struct attr *attr_new; |
1ec31309 | 1929 | int add_l3_ecomm = 0; |
d62a17ae | 1930 | |
1931 | afi = AFI_L2VPN; | |
1932 | safi = SAFI_EVPN; | |
1933 | memset(&attr, 0, sizeof(struct attr)); | |
1934 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
ead40654 | 1935 | memset(&attr_def_gw, 0, sizeof(struct attr)); |
1ec31309 | 1936 | memset(&attr_ip6_ll, 0, sizeof(struct attr)); |
d62a17ae | 1937 | |
1ec31309 | 1938 | /* Build path-attribute - multiple type-2 routes for this VNI will share |
1939 | * the same path attribute, but we need separate structures for sticky | |
1940 | * MACs, default gateway and IPv6 link-local addresses (no L3 RT/RMAC). | |
d62a17ae | 1941 | */ |
1942 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1943 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
ead40654 | 1944 | bgp_attr_default_set(&attr_def_gw, BGP_ORIGIN_IGP); |
d62a17ae | 1945 | attr.nexthop = vpn->originator_ip; |
1946 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1947 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1948 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1949 | attr_sticky.nexthop = vpn->originator_ip; |
1950 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1951 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1952 | attr_sticky.sticky = 1; | |
bc59a672 | 1953 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
ead40654 MK |
1954 | attr_def_gw.nexthop = vpn->originator_ip; |
1955 | attr_def_gw.mp_nexthop_global_in = vpn->originator_ip; | |
1956 | attr_def_gw.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1957 | attr_def_gw.default_gw = 1; | |
1958 | bgpevpn_get_rmac(vpn, &attr_def_gw.rmac); | |
1ec31309 | 1959 | bgp_attr_default_set(&attr_ip6_ll, BGP_ORIGIN_IGP); |
1960 | attr_ip6_ll.nexthop = vpn->originator_ip; | |
1961 | attr_ip6_ll.mp_nexthop_global_in = vpn->originator_ip; | |
1962 | attr_ip6_ll.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1963 | ||
1964 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local attributes if | |
1965 | * using L3 VNI for type-2 routes also. | |
1966 | */ | |
1967 | if (CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1968 | add_l3_ecomm = 1; | |
1969 | ||
1970 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1971 | build_evpn_route_extcomm(vpn, &attr_sticky, add_l3_ecomm); | |
1972 | build_evpn_route_extcomm(vpn, &attr_def_gw, add_l3_ecomm); | |
1973 | build_evpn_route_extcomm(vpn, &attr_ip6_ll, 0); | |
d62a17ae | 1974 | |
1975 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1976 | * routes updated, update corresponding entry in the global table too. | |
1977 | */ | |
1978 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1979 | rn = bgp_route_next(rn)) { | |
1980 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1981 | struct bgp_node *rd_rn; | |
1982 | struct bgp_info *global_ri; | |
1983 | ||
1984 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1985 | continue; | |
1986 | ||
3714a385 | 1987 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1988 | IN6_IS_ADDR_LINKLOCAL(&evp->prefix.macip_addr.ip.ipaddr_v6)) | |
1ec31309 | 1989 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
1990 | &attr_ip6_ll, 0, 1, &ri, 0); | |
1991 | else { | |
7ec156a9 MK |
1992 | if (evpn_route_is_sticky(bgp, rn)) |
1993 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1994 | &attr_sticky, 0, 1, &ri, |
1995 | 0); | |
ead40654 MK |
1996 | else if (evpn_route_is_def_gw(bgp, rn)) |
1997 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1998 | &attr_def_gw, 0, 1, &ri, |
1999 | 0); | |
7ec156a9 MK |
2000 | else |
2001 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
2002 | &attr, 0, 1, &ri, 0); | |
7ec156a9 | 2003 | } |
d62a17ae | 2004 | |
2005 | /* If a local route exists for this prefix, we need to update | |
2006 | * the global routing table too. | |
2007 | */ | |
2008 | if (!ri) | |
2009 | continue; | |
2010 | ||
2011 | /* Perform route selection; this is just to set the flags | |
2012 | * correctly | |
2013 | * as local route in the VNI always wins. | |
2014 | */ | |
2015 | evpn_route_select_install(bgp, vpn, rn); | |
2016 | ||
2017 | attr_new = ri->attr; | |
2018 | ||
2019 | /* Update route in global routing table. */ | |
2020 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2021 | (struct prefix *)evp, &vpn->prd); | |
2022 | assert(rd_rn); | |
2023 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
1a98c087 | 2024 | 0, &global_ri, 0); |
d62a17ae | 2025 | |
2026 | /* Schedule for processing and unlock node. */ | |
2027 | bgp_process(bgp, rd_rn, afi, safi); | |
2028 | bgp_unlock_node(rd_rn); | |
2029 | } | |
2030 | ||
2031 | /* Unintern temporary. */ | |
2032 | aspath_unintern(&attr.aspath); | |
2033 | aspath_unintern(&attr_sticky.aspath); | |
ead40654 | 2034 | aspath_unintern(&attr_def_gw.aspath); |
1ec31309 | 2035 | aspath_unintern(&attr_ip6_ll.aspath); |
d62a17ae | 2036 | |
2037 | return 0; | |
128ea8ab | 2038 | } |
2039 | ||
2040 | /* | |
2041 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2042 | * global routing table. These are also scheduled for withdraw from peers. | |
2043 | */ | |
d62a17ae | 2044 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2045 | { |
d62a17ae | 2046 | afi_t afi; |
2047 | safi_t safi; | |
2048 | struct bgp_node *rdrn, *rn; | |
2049 | struct bgp_table *table; | |
2050 | struct bgp_info *ri; | |
128ea8ab | 2051 | |
d62a17ae | 2052 | afi = AFI_L2VPN; |
2053 | safi = SAFI_EVPN; | |
128ea8ab | 2054 | |
d62a17ae | 2055 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2056 | if (rdrn && rdrn->info) { | |
2057 | table = (struct bgp_table *)rdrn->info; | |
2058 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2059 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2060 | |
d62a17ae | 2061 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2062 | continue; | |
128ea8ab | 2063 | |
50f74cf1 | 2064 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 2065 | if (ri) |
2066 | bgp_process(bgp, rn, afi, safi); | |
2067 | } | |
2068 | } | |
128ea8ab | 2069 | |
d62a17ae | 2070 | /* Unlock RD node. */ |
2071 | if (rdrn) | |
2072 | bgp_unlock_node(rdrn); | |
128ea8ab | 2073 | |
d62a17ae | 2074 | return 0; |
128ea8ab | 2075 | } |
2076 | ||
2077 | /* | |
2078 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2079 | * table as well as the per-VNI route table. | |
2080 | */ | |
d62a17ae | 2081 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2082 | { |
d62a17ae | 2083 | afi_t afi; |
2084 | safi_t safi; | |
2085 | struct bgp_node *rn; | |
2086 | struct bgp_info *ri; | |
128ea8ab | 2087 | |
d62a17ae | 2088 | afi = AFI_L2VPN; |
2089 | safi = SAFI_EVPN; | |
128ea8ab | 2090 | |
d62a17ae | 2091 | /* First, walk the global route table for this VNI's type-2 local |
2092 | * routes. | |
2093 | * EVPN routes are a 2-level table, first get the RD table. | |
2094 | */ | |
2095 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2096 | |
d62a17ae | 2097 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2098 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2099 | rn = bgp_route_next(rn)) { | |
2100 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2101 | |
d62a17ae | 2102 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2103 | continue; | |
128ea8ab | 2104 | |
50f74cf1 | 2105 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
128ea8ab | 2106 | |
d62a17ae | 2107 | /* Route entry in local table gets deleted immediately. */ |
2108 | if (ri) | |
2109 | bgp_info_reap(rn, ri); | |
2110 | } | |
128ea8ab | 2111 | |
d62a17ae | 2112 | return 0; |
128ea8ab | 2113 | } |
2114 | ||
50f74cf1 | 2115 | /* |
2116 | * Delete all routes in per ES route-table | |
2117 | */ | |
2118 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2119 | { | |
2120 | struct bgp_node *rn; | |
2121 | struct bgp_info *ri, *nextri; | |
2122 | ||
2123 | /* Walk this ES's route table and delete all routes. */ | |
2124 | for (rn = bgp_table_top(es->route_table); rn; | |
2125 | rn = bgp_route_next(rn)) { | |
2126 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2127 | ri = nextri) { | |
2128 | bgp_info_delete(rn, ri); | |
2129 | bgp_info_reap(rn, ri); | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | return 0; | |
2134 | } | |
2135 | ||
128ea8ab | 2136 | /* |
2137 | * Delete all routes in the per-VNI route table. | |
2138 | */ | |
d62a17ae | 2139 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2140 | { |
d62a17ae | 2141 | struct bgp_node *rn; |
2142 | struct bgp_info *ri, *nextri; | |
128ea8ab | 2143 | |
d62a17ae | 2144 | /* Walk this VNI's route table and delete all routes. */ |
2145 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2146 | rn = bgp_route_next(rn)) { | |
2147 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2148 | ri = nextri) { | |
2149 | bgp_info_delete(rn, ri); | |
2150 | bgp_info_reap(rn, ri); | |
2151 | } | |
2152 | } | |
128ea8ab | 2153 | |
d62a17ae | 2154 | return 0; |
128ea8ab | 2155 | } |
2156 | ||
2157 | /* | |
2158 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2159 | * export RT getting modified or change to tunnel IP. Note that these | |
2160 | * situations need the route in the per-VNI table as well as the global | |
2161 | * table to be updated (as attributes change). | |
2162 | */ | |
d62a17ae | 2163 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2164 | { |
d62a17ae | 2165 | int ret; |
2166 | struct prefix_evpn p; | |
128ea8ab | 2167 | |
d62a17ae | 2168 | /* Update and advertise the type-3 route (only one) followed by the |
2169 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2170 | */ | |
2171 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2172 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
2173 | if (ret) | |
2174 | return ret; | |
128ea8ab | 2175 | |
d62a17ae | 2176 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2177 | } |
2178 | ||
50f74cf1 | 2179 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2180 | * Also remove all other routes from the per ES table. | |
2181 | * Invoked when ES is deleted. | |
2182 | */ | |
2183 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2184 | { | |
2185 | int ret; | |
2186 | char buf[ESI_STR_LEN]; | |
2187 | struct prefix_evpn p; | |
2188 | ||
2189 | /* Delete and withdraw locally learnt ES route */ | |
2190 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2191 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2192 | if (ret) { | |
2193 | zlog_err( | |
2194 | "%u failed to delete type-4 route for ESI %s", | |
2195 | bgp->vrf_id, | |
2196 | esi_to_str(&es->esi, buf, sizeof(buf))); | |
2197 | } | |
2198 | ||
2199 | /* Delete all routes from per ES table */ | |
2200 | return delete_all_es_routes(bgp, es); | |
2201 | } | |
2202 | ||
128ea8ab | 2203 | /* |
2204 | * Delete (and withdraw) local routes for specified VNI from the global | |
2205 | * table and per-VNI table. After this, remove all other routes from | |
2206 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2207 | * (advertise-all-vni) being disabled. | |
2208 | */ | |
d62a17ae | 2209 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2210 | { |
d62a17ae | 2211 | int ret; |
2212 | struct prefix_evpn p; | |
128ea8ab | 2213 | |
d62a17ae | 2214 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2215 | * followed by type-3 routes (only one) - for this VNI. | |
2216 | */ | |
2217 | ret = delete_all_type2_routes(bgp, vpn); | |
2218 | if (ret) | |
2219 | return ret; | |
128ea8ab | 2220 | |
d62a17ae | 2221 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2222 | ret = delete_evpn_route(bgp, vpn, &p); | |
2223 | if (ret) | |
2224 | return ret; | |
128ea8ab | 2225 | |
d62a17ae | 2226 | /* Delete all routes from the per-VNI table. */ |
2227 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2228 | } |
2229 | ||
2230 | /* | |
d1911c26 | 2231 | * There is a tunnel endpoint IP address change for this VNI, delete |
2232 | * prior type-3 route (if needed) and update. | |
2233 | * Note: Route re-advertisement happens elsewhere after other processing | |
2234 | * other changes. | |
128ea8ab | 2235 | */ |
d62a17ae | 2236 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2237 | struct in_addr originator_ip) | |
128ea8ab | 2238 | { |
d62a17ae | 2239 | struct prefix_evpn p; |
128ea8ab | 2240 | |
ddd16ed5 MK |
2241 | /* If VNI is not live, we only need to update the originator ip */ |
2242 | if (!is_vni_live(vpn)) { | |
2243 | vpn->originator_ip = originator_ip; | |
2244 | return 0; | |
2245 | } | |
2246 | ||
db0e1937 MK |
2247 | /* Update the tunnel-ip hash */ |
2248 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2249 | bgp_tip_add(bgp, &originator_ip); | |
2250 | ||
2251 | /* filter routes as martian nexthop db has changed */ | |
2252 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2253 | ||
d62a17ae | 2254 | /* Need to withdraw type-3 route as the originator IP is part |
2255 | * of the key. | |
2256 | */ | |
2257 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2258 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2259 | |
d62a17ae | 2260 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2261 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2262 | return 0; |
128ea8ab | 2263 | } |
2264 | ||
50f74cf1 | 2265 | /* Install EVPN route entry in ES */ |
2266 | static int install_evpn_route_entry_in_es(struct bgp *bgp, | |
2267 | struct evpnes *es, | |
2268 | struct prefix_evpn *p, | |
2269 | struct bgp_info *parent_ri) | |
2270 | { | |
2271 | int ret = 0; | |
2272 | struct bgp_node *rn = NULL; | |
2273 | struct bgp_info *ri = NULL; | |
2274 | struct attr *attr_new = NULL; | |
2275 | ||
2276 | /* Create (or fetch) route within the VNI. | |
2277 | * NOTE: There is no RD here. | |
2278 | */ | |
2279 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2280 | ||
2281 | /* Check if route entry is already present. */ | |
2282 | for (ri = rn->info; ri; ri = ri->next) | |
2283 | if (ri->extra && | |
2284 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2285 | break; | |
2286 | ||
2287 | if (!ri) { | |
2288 | /* Add (or update) attribute to hash. */ | |
2289 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2290 | ||
2291 | /* Create new route with its attribute. */ | |
2292 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, | |
2293 | parent_ri->peer, attr_new, rn); | |
2294 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2295 | bgp_info_extra_get(ri); | |
2296 | ri->extra->parent = parent_ri; | |
2297 | bgp_info_add(rn, ri); | |
2298 | } else { | |
2299 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2300 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2301 | bgp_unlock_node(rn); | |
2302 | return 0; | |
2303 | } | |
2304 | /* The attribute has changed. */ | |
2305 | /* Add (or update) attribute to hash. */ | |
2306 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2307 | ||
2308 | /* Restore route, if needed. */ | |
2309 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2310 | bgp_info_restore(rn, ri); | |
2311 | ||
2312 | /* Mark if nexthop has changed. */ | |
2313 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2314 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2315 | ||
2316 | /* Unintern existing, set to new. */ | |
2317 | bgp_attr_unintern(&ri->attr); | |
2318 | ri->attr = attr_new; | |
2319 | ri->uptime = bgp_clock(); | |
2320 | } | |
2321 | ||
2322 | /* Perform route selection and update zebra, if required. */ | |
2323 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2324 | return ret; | |
2325 | } | |
2326 | ||
d3135ba3 | 2327 | /* |
2328 | * Install route entry into the VRF routing table and invoke route selection. | |
2329 | */ | |
2330 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2331 | struct prefix_evpn *evp, | |
2332 | struct bgp_info *parent_ri) | |
2333 | { | |
2334 | struct bgp_node *rn; | |
2335 | struct bgp_info *ri; | |
1ec31309 | 2336 | struct attr attr; |
d3135ba3 | 2337 | struct attr *attr_new; |
c4edf708 | 2338 | int ret = 0; |
d3135ba3 | 2339 | struct prefix p; |
2340 | struct prefix *pp = &p; | |
2341 | afi_t afi = 0; | |
2342 | safi_t safi = 0; | |
1eb88002 MK |
2343 | char buf[PREFIX_STRLEN]; |
2344 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2345 | |
2346 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2347 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2348 | |
1eb88002 | 2349 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2350 | zlog_debug( |
2351 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2352 | prefix2str(evp, buf, sizeof(buf)), | |
2353 | prefix2str(pp, buf1, sizeof(buf)), | |
2354 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2355 | } |
2356 | ||
d3135ba3 | 2357 | /* Create (or fetch) route within the VRF. */ |
2358 | /* NOTE: There is no RD here. */ | |
3714a385 | 2359 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2360 | afi = AFI_IP; |
2361 | safi = SAFI_UNICAST; | |
2362 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2363 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2364 | afi = AFI_IP6; |
2365 | safi = SAFI_UNICAST; | |
2366 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2367 | } else | |
2368 | return 0; | |
2369 | ||
1ec31309 | 2370 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2371 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2372 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2373 | * address for the rest of the code to flow through. In the case of IPv4, | |
2374 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2375 | */ |
2376 | bgp_attr_dup(&attr, parent_ri->attr); | |
2377 | if (afi == AFI_IP6) | |
2378 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2379 | else |
2380 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2381 | |
d3135ba3 | 2382 | /* Check if route entry is already present. */ |
2383 | for (ri = rn->info; ri; ri = ri->next) | |
2384 | if (ri->extra | |
2385 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2386 | break; | |
2387 | ||
2388 | if (!ri) { | |
2389 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2390 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2391 | |
2392 | /* Create new route with its attribute. */ | |
90f4f482 | 2393 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 2394 | parent_ri->peer, attr_new, rn); |
2395 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2396 | bgp_info_extra_get(ri); | |
528cd74f | 2397 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2398 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2399 | if (parent_ri->extra) { |
d3135ba3 | 2400 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2401 | sizeof(ri->extra->label)); |
2402 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2403 | } | |
d3135ba3 | 2404 | bgp_info_add(rn, ri); |
2405 | } else { | |
1ec31309 | 2406 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 2407 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
2408 | bgp_unlock_node(rn); | |
2409 | return 0; | |
2410 | } | |
2411 | /* The attribute has changed. */ | |
2412 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2413 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2414 | |
2415 | /* Restore route, if needed. */ | |
2416 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2417 | bgp_info_restore(rn, ri); | |
2418 | ||
2419 | /* Mark if nexthop has changed. */ | |
1ec31309 | 2420 | if ((afi == AFI_IP && |
2421 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
2422 | (afi == AFI_IP6 && | |
2423 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
2424 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 2425 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
2426 | ||
2427 | /* Unintern existing, set to new. */ | |
2428 | bgp_attr_unintern(&ri->attr); | |
2429 | ri->attr = attr_new; | |
2430 | ri->uptime = bgp_clock(); | |
2431 | } | |
2432 | ||
2433 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2434 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2435 | |
2436 | return ret; | |
2437 | } | |
2438 | ||
128ea8ab | 2439 | /* |
2440 | * Install route entry into the VNI routing table and invoke route selection. | |
2441 | */ | |
d62a17ae | 2442 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2443 | struct prefix_evpn *p, | |
2444 | struct bgp_info *parent_ri) | |
2445 | { | |
2446 | struct bgp_node *rn; | |
2447 | struct bgp_info *ri; | |
2448 | struct attr *attr_new; | |
2449 | int ret; | |
2450 | ||
2451 | /* Create (or fetch) route within the VNI. */ | |
2452 | /* NOTE: There is no RD here. */ | |
2453 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2454 | ||
2455 | /* Check if route entry is already present. */ | |
2456 | for (ri = rn->info; ri; ri = ri->next) | |
2457 | if (ri->extra | |
2458 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2459 | break; | |
2460 | ||
2461 | if (!ri) { | |
2462 | /* Add (or update) attribute to hash. */ | |
2463 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2464 | ||
2465 | /* Create new route with its attribute. */ | |
90f4f482 | 2466 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 2467 | parent_ri->peer, attr_new, rn); |
2468 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2469 | bgp_info_extra_get(ri); | |
528cd74f | 2470 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2471 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2472 | if (parent_ri->extra) { |
d62a17ae | 2473 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2474 | sizeof(ri->extra->label)); |
2475 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2476 | } | |
d62a17ae | 2477 | bgp_info_add(rn, ri); |
2478 | } else { | |
2479 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2480 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2481 | bgp_unlock_node(rn); | |
2482 | return 0; | |
2483 | } | |
2484 | /* The attribute has changed. */ | |
2485 | /* Add (or update) attribute to hash. */ | |
2486 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2487 | ||
50f74cf1 | 2488 | /* Restore route, if needed. */ |
2489 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2490 | bgp_info_restore(rn, ri); | |
2491 | ||
2492 | /* Mark if nexthop has changed. */ | |
2493 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2494 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2495 | ||
2496 | /* Unintern existing, set to new. */ | |
2497 | bgp_attr_unintern(&ri->attr); | |
2498 | ri->attr = attr_new; | |
2499 | ri->uptime = bgp_clock(); | |
2500 | } | |
2501 | ||
2502 | /* Perform route selection and update zebra, if required. */ | |
2503 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2504 | ||
2505 | return ret; | |
2506 | } | |
2507 | ||
2508 | /* Uninstall EVPN route entry from ES route table */ | |
2509 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, | |
2510 | struct evpnes *es, | |
2511 | struct prefix_evpn *p, | |
2512 | struct bgp_info *parent_ri) | |
2513 | { | |
2514 | int ret; | |
2515 | struct bgp_node *rn; | |
2516 | struct bgp_info *ri; | |
2517 | ||
2518 | if (!es->route_table) | |
2519 | return 0; | |
2520 | ||
2521 | /* Locate route within the ESI. | |
2522 | * NOTE: There is no RD here. | |
2523 | */ | |
2524 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2525 | if (!rn) | |
2526 | return 0; | |
2527 | ||
2528 | /* Find matching route entry. */ | |
2529 | for (ri = rn->info; ri; ri = ri->next) | |
2530 | if (ri->extra && | |
2531 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2532 | break; | |
d62a17ae | 2533 | |
50f74cf1 | 2534 | if (!ri) |
2535 | return 0; | |
d62a17ae | 2536 | |
50f74cf1 | 2537 | /* Mark entry for deletion */ |
2538 | bgp_info_delete(rn, ri); | |
d62a17ae | 2539 | |
2540 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2541 | ret = evpn_es_route_select_install(bgp, es, rn); |
2542 | ||
2543 | /* Unlock route node. */ | |
2544 | bgp_unlock_node(rn); | |
d62a17ae | 2545 | |
2546 | return ret; | |
128ea8ab | 2547 | } |
2548 | ||
d3135ba3 | 2549 | /* |
2550 | * Uninstall route entry from the VRF routing table and send message | |
2551 | * to zebra, if appropriate. | |
2552 | */ | |
2553 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2554 | struct prefix_evpn *evp, | |
2555 | struct bgp_info *parent_ri) | |
2556 | { | |
2557 | struct bgp_node *rn; | |
2558 | struct bgp_info *ri; | |
c4edf708 | 2559 | int ret = 0; |
d3135ba3 | 2560 | struct prefix p; |
2561 | struct prefix *pp = &p; | |
2562 | afi_t afi = 0; | |
2563 | safi_t safi = 0; | |
1eb88002 MK |
2564 | char buf[PREFIX_STRLEN]; |
2565 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2566 | |
2567 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2568 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2569 | |
1eb88002 | 2570 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2571 | zlog_debug( |
2572 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2573 | prefix2str(evp, buf, sizeof(buf)), | |
2574 | prefix2str(pp, buf1, sizeof(buf)), | |
2575 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2576 | } |
2577 | ||
d3135ba3 | 2578 | /* Locate route within the VRF. */ |
2579 | /* NOTE: There is no RD here. */ | |
3714a385 | 2580 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2581 | afi = AFI_IP; |
2582 | safi = SAFI_UNICAST; | |
2583 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2584 | } else { | |
2585 | afi = AFI_IP6; | |
2586 | safi = SAFI_UNICAST; | |
2587 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2588 | } | |
2589 | ||
2590 | if (!rn) | |
2591 | return 0; | |
2592 | ||
2593 | /* Find matching route entry. */ | |
2594 | for (ri = rn->info; ri; ri = ri->next) | |
2595 | if (ri->extra | |
2596 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2597 | break; | |
2598 | ||
2599 | if (!ri) | |
2600 | return 0; | |
2601 | ||
2602 | /* Mark entry for deletion */ | |
2603 | bgp_info_delete(rn, ri); | |
2604 | ||
2605 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2606 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2607 | |
2608 | /* Unlock route node. */ | |
2609 | bgp_unlock_node(rn); | |
2610 | ||
2611 | return ret; | |
2612 | } | |
2613 | ||
128ea8ab | 2614 | /* |
2615 | * Uninstall route entry from the VNI routing table and send message | |
2616 | * to zebra, if appropriate. | |
2617 | */ | |
d62a17ae | 2618 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2619 | struct prefix_evpn *p, | |
2620 | struct bgp_info *parent_ri) | |
128ea8ab | 2621 | { |
d62a17ae | 2622 | struct bgp_node *rn; |
2623 | struct bgp_info *ri; | |
2624 | int ret; | |
128ea8ab | 2625 | |
d62a17ae | 2626 | /* Locate route within the VNI. */ |
2627 | /* NOTE: There is no RD here. */ | |
2628 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2629 | if (!rn) | |
2630 | return 0; | |
128ea8ab | 2631 | |
d62a17ae | 2632 | /* Find matching route entry. */ |
2633 | for (ri = rn->info; ri; ri = ri->next) | |
2634 | if (ri->extra | |
2635 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2636 | break; | |
128ea8ab | 2637 | |
d62a17ae | 2638 | if (!ri) |
2639 | return 0; | |
128ea8ab | 2640 | |
d62a17ae | 2641 | /* Mark entry for deletion */ |
2642 | bgp_info_delete(rn, ri); | |
128ea8ab | 2643 | |
d62a17ae | 2644 | /* Perform route selection and update zebra, if required. */ |
2645 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2646 | |
d62a17ae | 2647 | /* Unlock route node. */ |
2648 | bgp_unlock_node(rn); | |
128ea8ab | 2649 | |
d62a17ae | 2650 | return ret; |
128ea8ab | 2651 | } |
2652 | ||
50f74cf1 | 2653 | /* |
2654 | * Given a prefix, see if it belongs to ES. | |
2655 | */ | |
2656 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2657 | struct evpnes *es) | |
2658 | { | |
2659 | /* if not an ES route return false */ | |
2660 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2661 | return 0; | |
2662 | ||
2663 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2664 | return 1; | |
2665 | ||
2666 | return 0; | |
2667 | } | |
2668 | ||
5ba238b7 MK |
2669 | /* |
2670 | * Given a route entry and a VRF, see if this route entry should be | |
2671 | * imported into the VRF i.e., RTs match. | |
2672 | */ | |
996c9314 | 2673 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2674 | { |
2675 | struct attr *attr = ri->attr; | |
2676 | struct ecommunity *ecom; | |
2677 | int i; | |
2678 | ||
2679 | assert(attr); | |
2680 | /* Route should have valid RT to be even considered. */ | |
2681 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2682 | return 0; | |
2683 | ||
2684 | ecom = attr->ecommunity; | |
2685 | if (!ecom || !ecom->size) | |
2686 | return 0; | |
2687 | ||
2688 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2689 | * matches, we're done. | |
2690 | */ | |
2691 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2692 | uint8_t *pnt; |
2693 | uint8_t type, sub_type; | |
5ba238b7 MK |
2694 | struct ecommunity_val *eval; |
2695 | struct ecommunity_val eval_tmp; | |
2696 | struct vrf_irt_node *irt; | |
2697 | ||
2698 | /* Only deal with RTs */ | |
2699 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2700 | eval = (struct ecommunity_val *)(ecom->val | |
2701 | + (i * ECOMMUNITY_SIZE)); | |
2702 | type = *pnt++; | |
2703 | sub_type = *pnt++; | |
2704 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2705 | continue; | |
2706 | ||
2707 | /* See if this RT matches specified VNIs import RTs */ | |
2708 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2709 | if (irt) |
5ba238b7 MK |
2710 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2711 | return 1; | |
2712 | ||
2713 | /* Also check for non-exact match. In this, we mask out the AS | |
2714 | * and | |
2715 | * only check on the local-admin sub-field. This is to | |
2716 | * facilitate using | |
2717 | * VNI as the RT for EBGP peering too. | |
2718 | */ | |
2719 | irt = NULL; | |
2720 | if (type == ECOMMUNITY_ENCODE_AS | |
2721 | || type == ECOMMUNITY_ENCODE_AS4 | |
2722 | || type == ECOMMUNITY_ENCODE_IP) { | |
2723 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2724 | mask_ecom_global_admin(&eval_tmp, eval); | |
2725 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2726 | } | |
5d9cbca2 | 2727 | if (irt) |
5ba238b7 MK |
2728 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2729 | return 1; | |
2730 | } | |
2731 | ||
2732 | return 0; | |
2733 | } | |
2734 | ||
128ea8ab | 2735 | /* |
2736 | * Given a route entry and a VNI, see if this route entry should be | |
2737 | * imported into the VNI i.e., RTs match. | |
2738 | */ | |
d62a17ae | 2739 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2740 | struct bgp_info *ri) | |
2741 | { | |
2742 | struct attr *attr = ri->attr; | |
2743 | struct ecommunity *ecom; | |
2744 | int i; | |
2745 | ||
2746 | assert(attr); | |
2747 | /* Route should have valid RT to be even considered. */ | |
2748 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2749 | return 0; | |
2750 | ||
2751 | ecom = attr->ecommunity; | |
2752 | if (!ecom || !ecom->size) | |
2753 | return 0; | |
2754 | ||
2755 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2756 | * matches, we're done. | |
2757 | */ | |
2758 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2759 | uint8_t *pnt; |
2760 | uint8_t type, sub_type; | |
d62a17ae | 2761 | struct ecommunity_val *eval; |
2762 | struct ecommunity_val eval_tmp; | |
2763 | struct irt_node *irt; | |
2764 | ||
2765 | /* Only deal with RTs */ | |
2766 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2767 | eval = (struct ecommunity_val *)(ecom->val | |
2768 | + (i * ECOMMUNITY_SIZE)); | |
2769 | type = *pnt++; | |
2770 | sub_type = *pnt++; | |
2771 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2772 | continue; | |
2773 | ||
2774 | /* See if this RT matches specified VNIs import RTs */ | |
2775 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2776 | if (irt) |
d62a17ae | 2777 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2778 | return 1; | |
2779 | ||
2780 | /* Also check for non-exact match. In this, we mask out the AS | |
2781 | * and | |
2782 | * only check on the local-admin sub-field. This is to | |
2783 | * facilitate using | |
2784 | * VNI as the RT for EBGP peering too. | |
2785 | */ | |
2786 | irt = NULL; | |
2787 | if (type == ECOMMUNITY_ENCODE_AS | |
2788 | || type == ECOMMUNITY_ENCODE_AS4 | |
2789 | || type == ECOMMUNITY_ENCODE_IP) { | |
2790 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2791 | mask_ecom_global_admin(&eval_tmp, eval); | |
2792 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2793 | } | |
b1ab0dfe | 2794 | if (irt) |
d62a17ae | 2795 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2796 | return 1; | |
2797 | } | |
2798 | ||
2799 | return 0; | |
128ea8ab | 2800 | } |
2801 | ||
50f74cf1 | 2802 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2803 | struct evpnes *es, | |
2804 | int install) | |
2805 | { | |
2806 | int ret; | |
2807 | afi_t afi; | |
2808 | safi_t safi; | |
2809 | char buf[PREFIX_STRLEN]; | |
2810 | char buf1[ESI_STR_LEN]; | |
2811 | struct bgp_node *rd_rn, *rn; | |
2812 | struct bgp_table *table; | |
2813 | struct bgp_info *ri; | |
2814 | ||
2815 | afi = AFI_L2VPN; | |
2816 | safi = SAFI_EVPN; | |
2817 | ||
2bb9eff4 DS |
2818 | /* |
2819 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2820 | * imported into this VRF. Note that we need to loop through all global |
2821 | * routes to determine which route matches the import rt on vrf | |
2822 | */ | |
2823 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2824 | rd_rn = bgp_route_next(rd_rn)) { | |
2825 | table = (struct bgp_table *)(rd_rn->info); | |
2826 | if (!table) | |
2827 | continue; | |
2828 | ||
2829 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2830 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2831 | ||
2832 | for (ri = rn->info; ri; ri = ri->next) { | |
2bb9eff4 DS |
2833 | /* |
2834 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2835 | * this ES. |
2836 | */ | |
2837 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2838 | && ri->type == ZEBRA_ROUTE_BGP | |
2839 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2840 | continue; | |
2841 | ||
2bb9eff4 DS |
2842 | if (!is_prefix_matching_for_es(evp, es)) |
2843 | continue; | |
50f74cf1 | 2844 | |
2bb9eff4 DS |
2845 | if (install) |
2846 | ret = install_evpn_route_entry_in_es( | |
2847 | bgp, es, evp, ri); | |
2848 | else | |
2849 | ret = uninstall_evpn_route_entry_in_es( | |
2850 | bgp, es, evp, ri); | |
2851 | ||
2852 | if (ret) { | |
2853 | zlog_err( | |
2854 | "Failed to %s EVPN %s route in ESI %s", | |
2855 | install ? "install" | |
2856 | : "uninstall", | |
2857 | prefix2str(evp, buf, | |
2858 | sizeof(buf)), | |
2859 | esi_to_str(&es->esi, buf1, | |
2860 | sizeof(buf1))); | |
2861 | return ret; | |
50f74cf1 | 2862 | } |
2863 | } | |
2864 | } | |
2865 | } | |
2866 | return 0; | |
2867 | } | |
2868 | ||
5ba238b7 MK |
2869 | /* |
2870 | * Install or uninstall mac-ip routes are appropriate for this | |
2871 | * particular VRF. | |
2872 | */ | |
996c9314 | 2873 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2874 | { |
2875 | afi_t afi; | |
2876 | safi_t safi; | |
2877 | struct bgp_node *rd_rn, *rn; | |
2878 | struct bgp_table *table; | |
2879 | struct bgp_info *ri; | |
2880 | int ret; | |
2881 | char buf[PREFIX_STRLEN]; | |
2882 | struct bgp *bgp_def = NULL; | |
2883 | ||
2884 | afi = AFI_L2VPN; | |
2885 | safi = SAFI_EVPN; | |
2886 | bgp_def = bgp_get_default(); | |
2887 | if (!bgp_def) | |
2888 | return -1; | |
2889 | ||
2890 | /* Walk entire global routing table and evaluate routes which could be | |
2891 | * imported into this VRF. Note that we need to loop through all global | |
2892 | * routes to determine which route matches the import rt on vrf | |
2893 | */ | |
2894 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2895 | rd_rn = bgp_route_next(rd_rn)) { | |
2896 | table = (struct bgp_table *)(rd_rn->info); | |
2897 | if (!table) | |
2898 | continue; | |
2899 | ||
2900 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2901 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2902 | ||
1eb88002 | 2903 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2904 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2905 | || evp->prefix.route_type | |
2906 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2907 | continue; |
2908 | ||
1eb88002 | 2909 | /* if not a mac+ip route skip this route */ |
3714a385 | 2910 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2911 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2912 | continue; |
2913 | ||
5ba238b7 MK |
2914 | for (ri = rn->info; ri; ri = ri->next) { |
2915 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2916 | * this VRF. |
2917 | */ | |
5ba238b7 MK |
2918 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2919 | && ri->type == ZEBRA_ROUTE_BGP | |
2920 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2921 | continue; | |
2922 | ||
2923 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2924 | if (install) | |
996c9314 | 2925 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2926 | bgp_vrf, evp, ri); |
2927 | else | |
996c9314 | 2928 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2929 | bgp_vrf, evp, ri); |
2930 | ||
2931 | if (ret) { | |
2932 | zlog_err( | |
2933 | "Failed to %s EVPN %s route in VRF %s", | |
2934 | install ? "install" | |
2935 | : "uninstall", | |
2936 | prefix2str(evp, buf, | |
2937 | sizeof(buf)), | |
996c9314 LB |
2938 | vrf_id_to_name( |
2939 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2940 | return ret; |
2941 | } | |
2942 | } | |
2943 | } | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | return 0; | |
2948 | } | |
2949 | ||
128ea8ab | 2950 | /* |
2951 | * Install or uninstall routes of specified type that are appropriate for this | |
2952 | * particular VNI. | |
2953 | */ | |
d62a17ae | 2954 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2955 | struct bgpevpn *vpn, | |
2956 | bgp_evpn_route_type rtype, | |
2957 | int install) | |
2958 | { | |
0291c246 MK |
2959 | afi_t afi; |
2960 | safi_t safi; | |
2961 | struct bgp_node *rd_rn, *rn; | |
2962 | struct bgp_table *table; | |
2963 | struct bgp_info *ri; | |
2964 | int ret; | |
d62a17ae | 2965 | |
2966 | afi = AFI_L2VPN; | |
2967 | safi = SAFI_EVPN; | |
2968 | ||
2969 | /* Walk entire global routing table and evaluate routes which could be | |
2970 | * imported into this VPN. Note that we cannot just look at the routes | |
2971 | * for | |
2972 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2973 | * RD. | |
2974 | */ | |
2975 | /* EVPN routes are a 2-level table. */ | |
2976 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2977 | rd_rn = bgp_route_next(rd_rn)) { | |
2978 | table = (struct bgp_table *)(rd_rn->info); | |
2979 | if (!table) | |
2980 | continue; | |
2981 | ||
2982 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2983 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2984 | ||
2985 | if (evp->prefix.route_type != rtype) | |
2986 | continue; | |
2987 | ||
2988 | for (ri = rn->info; ri; ri = ri->next) { | |
2989 | /* Consider "valid" remote routes applicable for | |
2990 | * this VNI. */ | |
2991 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2992 | && ri->type == ZEBRA_ROUTE_BGP | |
2993 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2994 | continue; | |
2995 | ||
2996 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2997 | if (install) | |
2998 | ret = install_evpn_route_entry( | |
60466a63 | 2999 | bgp, vpn, evp, ri); |
d62a17ae | 3000 | else |
3001 | ret = uninstall_evpn_route_entry( | |
3002 | bgp, vpn, evp, ri); | |
3003 | ||
3004 | if (ret) { | |
3005 | zlog_err( | |
3006 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3007 | bgp->vrf_id, | |
3008 | install ? "install" | |
3009 | : "uninstall", | |
3010 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3011 | ? "MACIP" | |
3012 | : "IMET", | |
3013 | vpn->vni); | |
3014 | return ret; | |
3015 | } | |
3016 | } | |
3017 | } | |
3018 | } | |
3019 | } | |
3020 | ||
3021 | return 0; | |
128ea8ab | 3022 | } |
3023 | ||
50f74cf1 | 3024 | /* Install any existing remote ES routes applicable for this ES into its routing |
3025 | * table. This is invoked when ES comes up. | |
3026 | */ | |
3027 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3028 | { | |
3029 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3030 | } | |
3031 | ||
3032 | ||
5ba238b7 | 3033 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3034 | * is invoked upon l3vni-add or l3vni import rt change |
3035 | */ | |
5ba238b7 MK |
3036 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3037 | { | |
3038 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3039 | return 0; | |
3040 | } | |
3041 | ||
128ea8ab | 3042 | /* |
3043 | * Install any existing remote routes applicable for this VNI into its | |
3044 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3045 | * RT is changed. | |
3046 | */ | |
d62a17ae | 3047 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3048 | { |
d62a17ae | 3049 | int ret; |
128ea8ab | 3050 | |
d62a17ae | 3051 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3052 | * for this VNI. | |
3053 | */ | |
3054 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3055 | 1); | |
3056 | if (ret) | |
3057 | return ret; | |
128ea8ab | 3058 | |
d62a17ae | 3059 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3060 | 1); | |
128ea8ab | 3061 | } |
3062 | ||
5ba238b7 MK |
3063 | /* uninstall routes from l3vni vrf. */ |
3064 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3065 | { | |
3066 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3067 | return 0; | |
3068 | } | |
3069 | ||
90e60aa7 | 3070 | /* |
3071 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3072 | * this is invoked is upon an import RT change. | |
3073 | */ | |
d62a17ae | 3074 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3075 | { |
d62a17ae | 3076 | int ret; |
90e60aa7 | 3077 | |
d62a17ae | 3078 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3079 | * applicable | |
3080 | * for this VNI. | |
3081 | */ | |
3082 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3083 | 0); | |
3084 | if (ret) | |
3085 | return ret; | |
90e60aa7 | 3086 | |
d62a17ae | 3087 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3088 | 0); | |
90e60aa7 | 3089 | } |
3090 | ||
50f74cf1 | 3091 | /* Install or unistall route in ES */ |
3092 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3093 | afi_t afi, safi_t safi, | |
3094 | struct prefix_evpn *evp, | |
3095 | struct bgp_info *ri, | |
3096 | int install) | |
3097 | { | |
3098 | int ret = 0; | |
3099 | char buf[ESI_STR_LEN]; | |
3100 | ||
3101 | if (install) | |
3102 | ret = install_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3103 | else | |
3104 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3105 | ||
3106 | if (ret) { | |
3107 | zlog_err("%u: Failed to %s EVPN %s route in ESI %s", | |
3108 | bgp->vrf_id, install ? "install" : "uninstall", | |
3109 | "ES", | |
3110 | esi_to_str(&evp->prefix.es_addr.esi, buf, | |
3111 | sizeof(buf))); | |
3112 | return ret; | |
3113 | } | |
3114 | return 0; | |
3115 | } | |
3116 | ||
d3135ba3 | 3117 | /* |
3118 | * Install or uninstall route in matching VRFs (list). | |
3119 | */ | |
3120 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3121 | safi_t safi, struct prefix_evpn *evp, | |
3122 | struct bgp_info *ri, | |
3123 | struct list *vrfs, int install) | |
3124 | { | |
3125 | char buf[PREFIX2STR_BUFFER]; | |
3126 | struct bgp *bgp_vrf; | |
3127 | struct listnode *node, *nnode; | |
3128 | ||
90264d64 | 3129 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3130 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3131 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3132 | return 0; |
3133 | ||
90264d64 | 3134 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3135 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3136 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3137 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3138 | return 0; |
3139 | ||
d3135ba3 | 3140 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3141 | int ret; | |
3142 | ||
3143 | if (install) | |
996c9314 | 3144 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 3145 | else |
996c9314 LB |
3146 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3147 | ri); | |
d3135ba3 | 3148 | |
3149 | if (ret) { | |
3150 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
3151 | bgp_def->vrf_id, | |
3152 | install ? "install" : "uninstall", | |
3153 | prefix2str(evp, buf, sizeof(buf)), | |
3154 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
3155 | return ret; | |
3156 | } | |
3157 | } | |
3158 | ||
3159 | return 0; | |
3160 | } | |
3161 | ||
128ea8ab | 3162 | /* |
3163 | * Install or uninstall route in matching VNIs (list). | |
3164 | */ | |
d62a17ae | 3165 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3166 | safi_t safi, struct prefix_evpn *evp, | |
3167 | struct bgp_info *ri, | |
3168 | struct list *vnis, int install) | |
128ea8ab | 3169 | { |
d62a17ae | 3170 | struct bgpevpn *vpn; |
3171 | struct listnode *node, *nnode; | |
128ea8ab | 3172 | |
d62a17ae | 3173 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3174 | int ret; | |
128ea8ab | 3175 | |
d62a17ae | 3176 | if (!is_vni_live(vpn)) |
3177 | continue; | |
128ea8ab | 3178 | |
d62a17ae | 3179 | if (install) |
3180 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
3181 | else | |
3182 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 3183 | |
d62a17ae | 3184 | if (ret) { |
3185 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
3186 | bgp->vrf_id, install ? "install" : "uninstall", | |
3187 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3188 | ? "MACIP" | |
3189 | : "IMET", | |
3190 | vpn->vni); | |
3191 | return ret; | |
3192 | } | |
3193 | } | |
128ea8ab | 3194 | |
d62a17ae | 3195 | return 0; |
128ea8ab | 3196 | } |
3197 | ||
3198 | /* | |
50f74cf1 | 3199 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3200 | */ |
d62a17ae | 3201 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3202 | struct prefix *p, struct bgp_info *ri, | |
3203 | int import) | |
3204 | { | |
3205 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3206 | struct attr *attr = ri->attr; | |
3207 | struct ecommunity *ecom; | |
3208 | int i; | |
3209 | ||
3210 | assert(attr); | |
3211 | ||
50f74cf1 | 3212 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3213 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3214 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3215 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3216 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3217 | return 0; |
3218 | ||
3219 | /* If we don't have Route Target, nothing much to do. */ | |
3220 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3221 | return 0; | |
3222 | ||
3223 | ecom = attr->ecommunity; | |
3224 | if (!ecom || !ecom->size) | |
3225 | return -1; | |
3226 | ||
50f74cf1 | 3227 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3228 | * attached to the route */ | |
d62a17ae | 3229 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3230 | uint8_t *pnt; |
3231 | uint8_t type, sub_type; | |
d62a17ae | 3232 | struct ecommunity_val *eval; |
3233 | struct ecommunity_val eval_tmp; | |
996c9314 | 3234 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3235 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3236 | struct evpnes *es; |
d62a17ae | 3237 | |
3238 | /* Only deal with RTs */ | |
3239 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3240 | eval = (struct ecommunity_val *)(ecom->val | |
3241 | + (i * ECOMMUNITY_SIZE)); | |
3242 | type = *pnt++; | |
3243 | sub_type = *pnt++; | |
3244 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3245 | continue; | |
3246 | ||
50f74cf1 | 3247 | /* |
3248 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3249 | * IMET route is imported into VNI table. | |
3250 | * prefix routes are imported into VRF table. | |
523cafc4 | 3251 | */ |
50f74cf1 | 3252 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3253 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3254 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3255 | |
50f74cf1 | 3256 | irt = lookup_import_rt(bgp, eval); |
3257 | if (irt) | |
3258 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3259 | evp, ri, | |
3260 | irt->vnis, | |
3261 | import); | |
3262 | ||
3263 | vrf_irt = lookup_vrf_import_rt(eval); | |
3264 | if (vrf_irt) | |
3265 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3266 | evp, ri, | |
3267 | vrf_irt->vrfs, | |
3268 | import); | |
3269 | ||
3270 | /* Also check for non-exact match. | |
3271 | * In this, we mask out the AS and | |
3272 | * only check on the local-admin sub-field. | |
3273 | * This is to facilitate using | |
3274 | * VNI as the RT for EBGP peering too. | |
3275 | */ | |
3276 | irt = NULL; | |
3277 | vrf_irt = NULL; | |
3278 | if (type == ECOMMUNITY_ENCODE_AS | |
3279 | || type == ECOMMUNITY_ENCODE_AS4 | |
3280 | || type == ECOMMUNITY_ENCODE_IP) { | |
3281 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3282 | mask_ecom_global_admin(&eval_tmp, eval); | |
3283 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3284 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3285 | } | |
3286 | ||
3287 | if (irt) | |
3288 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3289 | evp, ri, | |
3290 | irt->vnis, | |
3291 | import); | |
3292 | if (vrf_irt) | |
3293 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3294 | evp, ri, | |
3295 | vrf_irt->vrfs, | |
3296 | import); | |
3297 | } | |
3298 | ||
3299 | /* es route is imported into the es table */ | |
3300 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3301 | ||
3302 | /* we will match based on the entire esi to avoid | |
3303 | * imoort of an es route for esi2 into esi1 | |
3304 | */ | |
3305 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3306 | if (es && is_es_local(es)) | |
3307 | install_uninstall_route_in_es(bgp, es, | |
3308 | afi, safi, | |
3309 | evp, ri, import); | |
d62a17ae | 3310 | } |
d62a17ae | 3311 | } |
3312 | ||
3313 | return 0; | |
128ea8ab | 3314 | } |
3315 | ||
2bb9eff4 DS |
3316 | /* |
3317 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3318 | * routes | |
3319 | */ | |
80b140af MK |
3320 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3321 | { | |
3322 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3323 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3324 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3325 | |
3326 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3327 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3328 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3329 | } |
3330 | ||
2bb9eff4 DS |
3331 | /* |
3332 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3333 | * routes | |
3334 | */ | |
80b140af MK |
3335 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3336 | { | |
3337 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3338 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3339 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3340 | |
3341 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3342 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3343 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3344 | } |
3345 | ||
676f83b9 | 3346 | /* |
3347 | * update and advertise local routes for a VRF as type-5 routes. | |
3348 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3349 | * done in the global route table using the routes which already exist in the | |
3350 | * VRF routing table | |
3351 | */ | |
80b140af | 3352 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3353 | { |
80b140af MK |
3354 | /* skip if the RD is configured */ |
3355 | if (is_vrf_rd_configured(bgp_vrf)) | |
3356 | return; | |
3357 | ||
3358 | /* derive the RD for the VRF based on new router-id */ | |
3359 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3360 | ||
3361 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3362 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3363 | } |
3364 | ||
3365 | /* | |
3366 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3367 | * This is invoked upon VRF RD change. The processing is done only from global | |
3368 | * table. | |
3369 | */ | |
80b140af | 3370 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3371 | { |
80b140af MK |
3372 | /* skip if the RD is configured */ |
3373 | if (is_vrf_rd_configured(bgp_vrf)) | |
3374 | return; | |
3375 | ||
3376 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3377 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3378 | } |
3379 | ||
90e60aa7 | 3380 | /* |
3381 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3382 | * change. Note that the processing is done only on the global route table | |
3383 | * using routes that already exist in the per-VNI table. | |
3384 | */ | |
d62a17ae | 3385 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3386 | { | |
3387 | struct prefix_evpn p; | |
3388 | struct bgp_node *rn, *global_rn; | |
3389 | struct bgp_info *ri, *global_ri; | |
3390 | struct attr *attr; | |
3391 | afi_t afi = AFI_L2VPN; | |
3392 | safi_t safi = SAFI_EVPN; | |
3393 | ||
3394 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3395 | * attributes to create and advertise the type-3 route for this VNI | |
3396 | * in the global table. | |
3397 | */ | |
3398 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3399 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3400 | if (!rn) /* unexpected */ | |
3401 | return 0; | |
3402 | for (ri = rn->info; ri; ri = ri->next) | |
3403 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
3404 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3405 | break; | |
3406 | if (!ri) /* unexpected */ | |
3407 | return 0; | |
3408 | attr = ri->attr; | |
3409 | ||
3410 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3411 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
3412 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
3413 | 0); | |
d62a17ae | 3414 | |
3415 | /* Schedule for processing and unlock node. */ | |
3416 | bgp_process(bgp, global_rn, afi, safi); | |
3417 | bgp_unlock_node(global_rn); | |
3418 | ||
3419 | /* Now, walk this VNI's route table and use the route and its attribute | |
3420 | * to create and schedule route in global table. | |
3421 | */ | |
3422 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3423 | rn = bgp_route_next(rn)) { | |
3424 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3425 | ||
3426 | /* Identify MAC-IP local routes. */ | |
3427 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3428 | continue; | |
3429 | ||
3430 | for (ri = rn->info; ri; ri = ri->next) | |
3431 | if (ri->peer == bgp->peer_self | |
3432 | && ri->type == ZEBRA_ROUTE_BGP | |
3433 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3434 | break; | |
3435 | if (!ri) | |
3436 | continue; | |
3437 | ||
3438 | /* Create route in global routing table using this route entry's | |
3439 | * attribute. | |
3440 | */ | |
3441 | attr = ri->attr; | |
3442 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3443 | (struct prefix *)evp, &vpn->prd); | |
3444 | assert(global_rn); | |
3445 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 3446 | 0, &global_ri, 0); |
d62a17ae | 3447 | |
3448 | /* Schedule for processing and unlock node. */ | |
3449 | bgp_process(bgp, global_rn, afi, safi); | |
3450 | bgp_unlock_node(global_rn); | |
3451 | } | |
3452 | ||
3453 | return 0; | |
90e60aa7 | 3454 | } |
3455 | ||
3456 | /* | |
3457 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3458 | * table. Invoked upon router-id change. | |
3459 | */ | |
d62a17ae | 3460 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3461 | { |
d62a17ae | 3462 | int ret; |
3463 | struct prefix_evpn p; | |
3464 | struct bgp_node *global_rn; | |
3465 | struct bgp_info *ri; | |
3466 | afi_t afi = AFI_L2VPN; | |
3467 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3468 | |
d62a17ae | 3469 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3470 | * for this VNI - from the global table. | |
3471 | */ | |
3472 | ret = delete_global_type2_routes(bgp, vpn); | |
3473 | if (ret) | |
3474 | return ret; | |
90e60aa7 | 3475 | |
d62a17ae | 3476 | /* Remove type-3 route for this VNI from global table. */ |
3477 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3478 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3479 | (struct prefix *)&p, &vpn->prd); | |
3480 | if (global_rn) { | |
3481 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 3482 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
90e60aa7 | 3483 | |
d62a17ae | 3484 | /* Schedule for processing - withdraws to peers happen from |
3485 | * this table. | |
3486 | */ | |
3487 | if (ri) | |
3488 | bgp_process(bgp, global_rn, afi, safi); | |
3489 | bgp_unlock_node(global_rn); | |
3490 | } | |
90e60aa7 | 3491 | |
d62a17ae | 3492 | return 0; |
90e60aa7 | 3493 | } |
3494 | ||
2d48ee25 | 3495 | /* |
3496 | * Handle router-id change. Update and advertise local routes corresponding | |
3497 | * to this VNI from peers. Note that this is invoked after updating the | |
3498 | * router-id. The routes in the per-VNI table are used to create routes in | |
3499 | * the global table and schedule them. | |
3500 | */ | |
d62a17ae | 3501 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3502 | { |
d62a17ae | 3503 | struct bgpevpn *vpn; |
2d48ee25 | 3504 | |
d62a17ae | 3505 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3506 | |
d62a17ae | 3507 | if (!vpn) { |
3508 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3509 | return; | |
3510 | } | |
2d48ee25 | 3511 | |
d62a17ae | 3512 | /* Skip VNIs with configured RD. */ |
3513 | if (is_rd_configured(vpn)) | |
3514 | return; | |
2d48ee25 | 3515 | |
d62a17ae | 3516 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3517 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3518 | } |
3519 | ||
3520 | /* | |
3521 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3522 | * to this VNI from peers. Note that this is invoked prior to updating | |
3523 | * the router-id and is done only on the global route table, the routes | |
3524 | * are needed in the per-VNI table to re-advertise with new router id. | |
3525 | */ | |
d62a17ae | 3526 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3527 | { |
d62a17ae | 3528 | struct bgpevpn *vpn; |
2d48ee25 | 3529 | |
d62a17ae | 3530 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3531 | |
d62a17ae | 3532 | if (!vpn) { |
3533 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3534 | return; | |
3535 | } | |
2d48ee25 | 3536 | |
d62a17ae | 3537 | /* Skip VNIs with configured RD. */ |
3538 | if (is_rd_configured(vpn)) | |
3539 | return; | |
2d48ee25 | 3540 | |
d62a17ae | 3541 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3542 | } |
3543 | ||
128ea8ab | 3544 | /* |
3545 | * Process received EVPN type-2 route (advertise or withdraw). | |
3546 | */ | |
d62a17ae | 3547 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3548 | struct attr *attr, uint8_t *pfx, int psize, |
3549 | uint32_t addpath_id) | |
d62a17ae | 3550 | { |
3551 | struct prefix_rd prd; | |
3552 | struct prefix_evpn p; | |
554cd77a | 3553 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3554 | uint8_t ipaddr_len; |
3555 | uint8_t macaddr_len; | |
b57ba6d2 | 3556 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3557 | uint32_t num_labels = 0; |
554cd77a | 3558 | uint32_t eth_tag; |
d62a17ae | 3559 | int ret; |
3560 | ||
3561 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3562 | * additional 3 bytes if there is a second label (VNI): | |
3563 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3564 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3565 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3566 | */ | |
3567 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3568 | && psize != 40 && psize != 52) { | |
3569 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
3570 | peer->bgp->vrf_id, peer->host, psize); | |
3571 | return -1; | |
3572 | } | |
3573 | ||
554cd77a VB |
3574 | memset(&evpn, 0, sizeof(evpn)); |
3575 | ||
d62a17ae | 3576 | /* Make prefix_rd */ |
3577 | prd.family = AF_UNSPEC; | |
3578 | prd.prefixlen = 64; | |
3579 | memcpy(&prd.val, pfx, 8); | |
3580 | pfx += 8; | |
3581 | ||
3582 | /* Make EVPN prefix. */ | |
3583 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3584 | p.family = AF_EVPN; |
50f74cf1 | 3585 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3586 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3587 | ||
554cd77a VB |
3588 | /* Copy Ethernet Seg Identifier */ |
3589 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3590 | pfx += ESI_LEN; | |
d62a17ae | 3591 | |
554cd77a VB |
3592 | /* Copy Ethernet Tag */ |
3593 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3594 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3595 | pfx += 4; |
3596 | ||
3597 | /* Get the MAC Addr len */ | |
3598 | macaddr_len = *pfx++; | |
3599 | ||
3600 | /* Get the MAC Addr */ | |
28328ea9 | 3601 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3602 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3603 | pfx += ETH_ALEN; |
d62a17ae | 3604 | } else { |
3605 | zlog_err( | |
3606 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
3607 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3608 | return -1; | |
3609 | } | |
3610 | ||
3611 | ||
3612 | /* Get the IP. */ | |
3613 | ipaddr_len = *pfx++; | |
3614 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3615 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
3616 | zlog_err( | |
3617 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
3618 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3619 | return -1; | |
3620 | } | |
3621 | ||
3622 | if (ipaddr_len) { | |
3623 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3624 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3625 | ? IPADDR_V4 |
3626 | : IPADDR_V6; | |
3714a385 | 3627 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3628 | } |
3629 | pfx += ipaddr_len; | |
3630 | ||
b57ba6d2 MK |
3631 | /* Get the VNI(s). Stored as bytes here. */ |
3632 | num_labels++; | |
3633 | memset(label, 0, sizeof(label)); | |
3634 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3635 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3636 | psize -= (33 + ipaddr_len); |
3637 | /* Do we have a second VNI? */ | |
3638 | if (psize) { | |
3639 | num_labels++; | |
3640 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3641 | /* |
3642 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3643 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3644 | * the next field | |
6b11bd8d | 3645 | */ |
b57ba6d2 | 3646 | } |
d62a17ae | 3647 | |
3648 | /* Process the route. */ | |
3649 | if (attr) | |
3650 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3651 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3652 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3653 | else |
3654 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3655 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3656 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3657 | return ret; |
128ea8ab | 3658 | } |
3659 | ||
3660 | /* | |
3661 | * Process received EVPN type-3 route (advertise or withdraw). | |
3662 | */ | |
d62a17ae | 3663 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3664 | struct attr *attr, uint8_t *pfx, int psize, |
3665 | uint32_t addpath_id) | |
d62a17ae | 3666 | { |
3667 | struct prefix_rd prd; | |
3668 | struct prefix_evpn p; | |
d7c0a89a | 3669 | uint8_t ipaddr_len; |
554cd77a | 3670 | uint32_t eth_tag; |
d62a17ae | 3671 | int ret; |
3672 | ||
3673 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3674 | * IP len (1) and IP (4 or 16). | |
3675 | */ | |
3676 | if (psize != 17 && psize != 29) { | |
3677 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
3678 | peer->bgp->vrf_id, peer->host, psize); | |
3679 | return -1; | |
3680 | } | |
3681 | ||
7fd077aa | 3682 | /* If PMSI is present, log if it is anything other than IR. |
3683 | * Note: We just simply ignore the values as it is not clear if | |
3684 | * doing anything else is better. | |
3685 | */ | |
3686 | if (attr && | |
3687 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3688 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
d0be47e8 | 3689 | zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
7fd077aa | 3690 | peer->bgp->vrf_id, peer->host, |
3691 | attr->pmsi_tnl_type); | |
3692 | } | |
3693 | } | |
3694 | ||
d62a17ae | 3695 | /* Make prefix_rd */ |
3696 | prd.family = AF_UNSPEC; | |
3697 | prd.prefixlen = 64; | |
3698 | memcpy(&prd.val, pfx, 8); | |
3699 | pfx += 8; | |
3700 | ||
3701 | /* Make EVPN prefix. */ | |
3702 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3703 | p.family = AF_EVPN; |
50f74cf1 | 3704 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3705 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3706 | ||
554cd77a VB |
3707 | /* Copy Ethernet Tag */ |
3708 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3709 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3710 | pfx += 4; |
3711 | ||
3712 | /* Get the IP. */ | |
3713 | ipaddr_len = *pfx++; | |
3714 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3715 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3716 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3717 | } else { |
3718 | zlog_err( | |
3719 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
3720 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3721 | return -1; | |
3722 | } | |
3723 | ||
3724 | /* Process the route. */ | |
3725 | if (attr) | |
3726 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3727 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3728 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3729 | else |
3730 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3731 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3732 | &prd, NULL, 0, NULL); |
d62a17ae | 3733 | return ret; |
128ea8ab | 3734 | } |
3735 | ||
50f74cf1 | 3736 | /* |
3737 | * Process received EVPN type-4 route (advertise or withdraw). | |
3738 | */ | |
3739 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3740 | struct attr *attr, uint8_t *pfx, int psize, | |
3741 | uint32_t addpath_id) | |
3742 | { | |
3743 | int ret; | |
3744 | esi_t esi; | |
3745 | uint8_t ipaddr_len; | |
3746 | struct in_addr vtep_ip; | |
3747 | struct prefix_rd prd; | |
3748 | struct prefix_evpn p; | |
3749 | ||
3750 | /* Type-4 route should be either 23 or 35 bytes | |
3751 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3752 | */ | |
3753 | if (psize != 23 && psize != 35) { | |
3754 | zlog_err("%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
3755 | peer->bgp->vrf_id, peer->host, psize); | |
3756 | return -1; | |
3757 | } | |
3758 | ||
3759 | /* Make prefix_rd */ | |
3760 | prd.family = AF_UNSPEC; | |
3761 | prd.prefixlen = 64; | |
3762 | memcpy(&prd.val, pfx, 8); | |
3763 | pfx += 8; | |
3764 | ||
3765 | /* get the ESI */ | |
3766 | memcpy(&esi, pfx, ESI_BYTES); | |
3767 | pfx += ESI_BYTES; | |
3768 | ||
3769 | ||
3770 | /* Get the IP. */ | |
3771 | ipaddr_len = *pfx++; | |
3772 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3773 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3774 | } else { | |
3775 | zlog_err( | |
3776 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
3777 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3778 | return -1; | |
3779 | } | |
3780 | ||
3781 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3782 | /* Process the route. */ | |
3783 | if (attr) { | |
3784 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3785 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3786 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3787 | } else { |
50f74cf1 | 3788 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3789 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3790 | &prd, NULL, 0, NULL); | |
3791 | } | |
3792 | return ret; | |
3793 | } | |
3794 | ||
3795 | ||
128ea8ab | 3796 | /* |
3797 | * Process received EVPN type-5 route (advertise or withdraw). | |
3798 | */ | |
d62a17ae | 3799 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3800 | struct attr *attr, uint8_t *pfx, int psize, |
3801 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3802 | { |
3803 | struct prefix_rd prd; | |
3804 | struct prefix_evpn p; | |
3805 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3806 | uint8_t ippfx_len; |
3807 | uint32_t eth_tag; | |
b57ba6d2 | 3808 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3809 | int ret; |
3810 | ||
3811 | /* Type-5 route should be 34 or 58 bytes: | |
3812 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3813 | * GW (4 or 16) and VNI (3). | |
3814 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3815 | */ | |
3816 | if (psize != 34 && psize != 58) { | |
3817 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
3818 | peer->bgp->vrf_id, peer->host, psize); | |
3819 | return -1; | |
3820 | } | |
3821 | ||
3822 | /* Make prefix_rd */ | |
3823 | prd.family = AF_UNSPEC; | |
3824 | prd.prefixlen = 64; | |
3825 | memcpy(&prd.val, pfx, 8); | |
3826 | pfx += 8; | |
3827 | ||
3828 | /* Make EVPN prefix. */ | |
3829 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3830 | p.family = AF_EVPN; |
50f74cf1 | 3831 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3832 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3833 | ||
3834 | /* Additional information outside of prefix - ESI and GW IP */ | |
3835 | memset(&evpn, 0, sizeof(evpn)); | |
3836 | ||
3837 | /* Fetch ESI */ | |
3838 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3839 | pfx += 10; | |
3840 | ||
3841 | /* Fetch Ethernet Tag. */ | |
3842 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3843 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3844 | pfx += 4; |
3845 | ||
3846 | /* Fetch IP prefix length. */ | |
3847 | ippfx_len = *pfx++; | |
3848 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
3849 | zlog_err( | |
3850 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
3851 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3852 | return -1; | |
3853 | } | |
3714a385 | 3854 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3855 | |
3856 | /* Determine IPv4 or IPv6 prefix */ | |
3857 | /* Since the address and GW are from the same family, this just becomes | |
3858 | * a simple check on the total size. | |
3859 | */ | |
3860 | if (psize == 34) { | |
3714a385 | 3861 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3862 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3863 | pfx += 4; |
3864 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3865 | pfx += 4; | |
d62a17ae | 3866 | } else { |
3714a385 | 3867 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3868 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3869 | pfx += 16; |
3870 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3871 | pfx += 16; | |
d62a17ae | 3872 | } |
3873 | ||
b57ba6d2 MK |
3874 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3875 | memset(&label, 0, sizeof(label)); | |
3876 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3877 | |
3878 | /* | |
3879 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3880 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3881 | * field | |
6b11bd8d | 3882 | */ |
d62a17ae | 3883 | |
3884 | /* Process the route. */ | |
3885 | if (!withdraw) | |
3886 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3887 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3888 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3889 | else |
3890 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3891 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3892 | &prd, &label, 1, &evpn); |
d62a17ae | 3893 | |
3894 | return ret; | |
3895 | } | |
3896 | ||
3897 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3898 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3899 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3900 | { |
3901 | int len; | |
3902 | char temp[16]; | |
3903 | struct evpn_addr *p_evpn_p; | |
3904 | ||
3905 | memset(&temp, 0, 16); | |
b03b8898 | 3906 | if (p->family != AF_EVPN) |
d62a17ae | 3907 | return; |
3908 | p_evpn_p = &(p->u.prefix_evpn); | |
3909 | ||
e9fc2840 | 3910 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3911 | IP and GW-IP have to be both ipv4 or ipv6 |
3912 | */ | |
3714a385 | 3913 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3914 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3915 | else |
e9fc2840 | 3916 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3917 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3918 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3919 | stream_put(s, prd->val, 8); | |
0af35d90 | 3920 | if (attr) |
d62a17ae | 3921 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3922 | else | |
3923 | stream_put(s, &temp, 10); | |
3714a385 | 3924 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3925 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3926 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3927 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3928 | else |
3714a385 | 3929 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3930 | if (attr) { |
3714a385 | 3931 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3932 | stream_put_ipv4(s, |
3933 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3934 | else | |
3935 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3936 | } else { | |
3714a385 | 3937 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3938 | stream_put_ipv4(s, 0); |
3939 | else | |
3940 | stream_put(s, &temp, 16); | |
3941 | } | |
3942 | ||
b57ba6d2 | 3943 | if (num_labels) |
d62a17ae | 3944 | stream_put(s, label, 3); |
3945 | else | |
3946 | stream_put3(s, 0); | |
128ea8ab | 3947 | } |
3948 | ||
3949 | /* | |
3950 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3951 | */ | |
d62a17ae | 3952 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3953 | { |
d62a17ae | 3954 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3955 | |
d62a17ae | 3956 | /* Remove EVPN routes and schedule for processing. */ |
3957 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3958 | |
d62a17ae | 3959 | /* Clear "live" flag and see if hash needs to be freed. */ |
3960 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3961 | if (!is_vni_configured(vpn)) | |
3962 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3963 | } |
3964 | ||
3965 | /* | |
3966 | * Free a VNI entry; iterator function called during cleanup. | |
3967 | */ | |
d62a17ae | 3968 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3969 | { |
d62a17ae | 3970 | struct bgpevpn *vpn; |
128ea8ab | 3971 | |
d62a17ae | 3972 | vpn = (struct bgpevpn *)backet->data; |
3973 | delete_all_vni_routes(bgp, vpn); | |
3974 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3975 | } |
3976 | ||
c581d8b0 MK |
3977 | /* |
3978 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3979 | */ | |
3980 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3981 | { | |
10ebe1ab MK |
3982 | struct bgp *bgp_def = NULL; |
3983 | ||
c581d8b0 | 3984 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3985 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3986 | ||
3987 | /* Map RT to VRF */ | |
3988 | bgp_def = bgp_get_default(); | |
3989 | if (!bgp_def) | |
3990 | return; | |
3991 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3992 | } |
3993 | ||
3994 | /* | |
3995 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3996 | */ | |
3997 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3998 | { | |
3999 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4000 | } | |
4001 | ||
4002 | /* | |
4003 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4004 | */ | |
4005 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4006 | { | |
4007 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4008 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4009 | } | |
4010 | ||
4011 | /* | |
4012 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4013 | */ | |
4014 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4015 | { | |
4016 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4017 | } | |
128ea8ab | 4018 | |
f1f8b53c MK |
4019 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4020 | { | |
4021 | struct bgp *bgp_def = NULL; | |
4022 | struct listnode *node = NULL; | |
4023 | struct bgpevpn *vpn = NULL; | |
4024 | ||
4025 | bgp_def = bgp_get_default(); | |
4026 | if (!bgp_def) | |
4027 | return; | |
4028 | ||
4992b4ae MK |
4029 | /* update all type-5 routes */ |
4030 | update_advertise_vrf_routes(bgp_vrf); | |
4031 | ||
4032 | /* update all type-2 routes */ | |
f1f8b53c MK |
4033 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4034 | update_routes_for_vni(bgp_def, vpn); | |
4035 | } | |
4036 | ||
bf1061d8 VB |
4037 | /* |
4038 | * Handle autort change for a given VNI. | |
4039 | */ | |
4040 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4041 | { | |
4042 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 VB |
4043 | |
4044 | if (!vpn) { | |
4045 | zlog_warn("%s: VNI hash entry for VNI not found", __PRETTY_FUNCTION__); | |
4046 | return; | |
4047 | } | |
4048 | ||
4049 | if (!is_import_rt_configured(vpn)) { | |
4050 | if (is_vni_live(vpn)) | |
4051 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4052 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4053 | list_delete_all_node(vpn->import_rtl); |
4054 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4055 | if (is_vni_live(vpn)) | |
4056 | bgp_evpn_install_routes(bgp, vpn); | |
4057 | } | |
4058 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4059 | list_delete_all_node(vpn->export_rtl); |
4060 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4061 | if (is_vni_live(vpn)) | |
4062 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4063 | } | |
4064 | } | |
4065 | ||
128ea8ab | 4066 | /* |
4067 | * Public functions. | |
4068 | */ | |
4069 | ||
5424b7ba | 4070 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4071 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4072 | afi_t afi, safi_t safi) |
4073 | { | |
4074 | int ret = 0; | |
4075 | struct prefix_evpn evp; | |
4076 | char buf[PREFIX_STRLEN]; | |
4077 | ||
31310b25 | 4078 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4079 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4080 | if (ret) { | |
4081 | zlog_err( | |
996c9314 LB |
4082 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4083 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4084 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4085 | } |
4086 | } | |
4087 | ||
342dd0c6 | 4088 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4089 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4090 | { |
4091 | struct bgp_table *table = NULL; | |
4092 | struct bgp_node *rn = NULL; | |
25f2ca53 | 4093 | struct bgp_info *ri; |
342dd0c6 | 4094 | |
053905d2 | 4095 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4096 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4097 | /* Only care about "selected" routes - non-imported. */ | |
4098 | /* TODO: Support for AddPath for EVPN. */ | |
4099 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4100 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4101 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 4102 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4103 | afi, safi); | |
4104 | break; | |
4105 | } | |
4106 | } | |
4107 | } | |
5424b7ba | 4108 | } |
342dd0c6 | 4109 | |
2f69f6d3 | 4110 | /* |
4111 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4112 | * to this function correspond to those of the source IP prefix (best | |
4113 | * path in the case of the attr. In the case of a local prefix (when we | |
4114 | * are advertising local subnets), the src_attr will be NULL. | |
4115 | */ | |
31310b25 | 4116 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4117 | struct attr *src_attr, afi_t afi, |
4118 | safi_t safi) | |
5424b7ba MK |
4119 | { |
4120 | int ret = 0; | |
4121 | struct prefix_evpn evp; | |
4122 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4123 | |
31310b25 | 4124 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4125 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4126 | if (ret) | |
996c9314 LB |
4127 | zlog_err("%u: Failed to create type-5 route for prefix %s", |
4128 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4129 | } |
4130 | ||
2f69f6d3 | 4131 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4132 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4133 | * advertisement is enabled. | |
4134 | */ | |
996c9314 LB |
4135 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4136 | safi_t safi) | |
342dd0c6 | 4137 | { |
4138 | struct bgp_table *table = NULL; | |
4139 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 4140 | struct bgp_info *ri; |
342dd0c6 | 4141 | |
053905d2 | 4142 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4143 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4144 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4145 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4146 | * TODO: Support for AddPath for EVPN. |
4147 | */ | |
4148 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4149 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4150 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
4151 | |
4152 | /* apply the route-map */ | |
4153 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4154 | int ret = 0; | |
4155 | ||
996c9314 LB |
4156 | ret = route_map_apply( |
4157 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4158 | .map, | |
4159 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
4160 | if (ret == RMAP_DENYMATCH) |
4161 | continue; | |
4162 | } | |
996c9314 LB |
4163 | bgp_evpn_advertise_type5_route( |
4164 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 4165 | break; |
4166 | } | |
4167 | } | |
31310b25 | 4168 | } |
342dd0c6 | 4169 | } |
4170 | ||
996c9314 | 4171 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4172 | { |
4173 | struct listnode *node, *nnode, *node_to_del; | |
4174 | struct ecommunity *ecom, *ecom_auto; | |
4175 | struct ecommunity_val eval; | |
4176 | ||
bf1061d8 VB |
4177 | if (bgp->advertise_autort_rfc8365) |
4178 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4179 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4180 | ||
4181 | ecom_auto = ecommunity_new(); | |
4182 | ecommunity_add_val(ecom_auto, &eval); | |
4183 | node_to_del = NULL; | |
4184 | ||
4185 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4186 | if (ecommunity_match(ecom, ecom_auto)) { | |
4187 | ecommunity_free(&ecom); | |
4188 | node_to_del = node; | |
4189 | } | |
4190 | } | |
4191 | ||
4192 | if (node_to_del) | |
4193 | list_delete_node(rtl, node_to_del); | |
4194 | ||
4195 | ecommunity_free(&ecom_auto); | |
4196 | } | |
4197 | ||
4198 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4199 | struct ecommunity *ecomadd) |
c581d8b0 | 4200 | { |
5ba238b7 MK |
4201 | /* uninstall routes from vrf */ |
4202 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4203 | |
4204 | /* Cleanup the RT to VRF mapping */ | |
4205 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4206 | ||
c581d8b0 MK |
4207 | /* Remove auto generated RT */ |
4208 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4209 | ||
4210 | /* Add the newly configured RT to RT list */ | |
4211 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4212 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4213 | ||
10ebe1ab MK |
4214 | /* map VRF to its RTs */ |
4215 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4216 | ||
5ba238b7 MK |
4217 | /* install routes matching the new VRF */ |
4218 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4219 | } |
4220 | ||
4221 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4222 | struct ecommunity *ecomdel) | |
4223 | { | |
4224 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4225 | struct ecommunity *ecom = NULL; | |
4226 | ||
5ba238b7 MK |
4227 | /* uninstall routes from vrf */ |
4228 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4229 | |
4230 | /* Cleanup the RT to VRF mapping */ | |
4231 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4232 | ||
c581d8b0 MK |
4233 | /* remove the RT from the RT list */ |
4234 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4235 | if (ecommunity_match(ecom, ecomdel)) { | |
4236 | ecommunity_free(&ecom); | |
4237 | node_to_del = node; | |
4238 | break; | |
4239 | } | |
4240 | } | |
4241 | ||
4242 | if (node_to_del) | |
4243 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4244 | ||
4245 | /* fallback to auto import rt, if this was the last RT */ | |
4246 | if (list_isempty(bgp_vrf->vrf_import_rtl)) { | |
4247 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4248 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4249 | } | |
4250 | ||
10ebe1ab MK |
4251 | /* map VRFs to its RTs */ |
4252 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4253 | ||
5ba238b7 MK |
4254 | /* install routes matching this new RT */ |
4255 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4256 | } |
4257 | ||
4258 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4259 | struct ecommunity *ecomadd) | |
4260 | { | |
4261 | /* remove auto-generated RT */ | |
4262 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4263 | ||
4264 | /* Add the new RT to the RT list */ | |
4265 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4266 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4267 | ||
f1f8b53c | 4268 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4269 | } |
4270 | ||
4271 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4272 | struct ecommunity *ecomdel) | |
4273 | { | |
4274 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4275 | struct ecommunity *ecom = NULL; | |
4276 | ||
4277 | /* Remove the RT from the RT list */ | |
4278 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4279 | if (ecommunity_match(ecom, ecomdel)) { | |
4280 | ecommunity_free(&ecom); | |
4281 | node_to_del = node; | |
4282 | break; | |
4283 | } | |
4284 | } | |
4285 | ||
4286 | if (node_to_del) | |
4287 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4288 | ||
1525e99f DS |
4289 | /* |
4290 | * Temporary assert to make SA happy. | |
4291 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4292 | * which means that SA is going to complain about | |
4293 | * the list_isempty call, which doesn't NULL check. | |
4294 | * So until we get this situation cleaned up, here | |
4295 | * we are. | |
4296 | */ | |
4297 | assert(bgp_vrf->vrf_export_rtl); | |
4298 | ||
c581d8b0 | 4299 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4300 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4301 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4302 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4303 | } | |
4304 | ||
f1f8b53c | 4305 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4306 | } |
4307 | ||
2d48ee25 | 4308 | /* |
4309 | * Handle change to BGP router id. This is invoked twice by the change | |
4310 | * handler, first before the router id has been changed and then after | |
4311 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4312 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4313 | * will result in the routes being re-advertised. |
4314 | */ | |
d62a17ae | 4315 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4316 | { |
676f83b9 | 4317 | if (withdraw) { |
4318 | ||
4319 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4320 | stored in the global table for this vrf |
4321 | */ | |
80b140af | 4322 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4323 | |
4324 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4325 | * L2-VNIs |
4326 | */ | |
d62a17ae | 4327 | hash_iterate(bgp->vnihash, |
4328 | (void (*)(struct hash_backet *, | |
4329 | void *))withdraw_router_id_vni, | |
4330 | bgp); | |
676f83b9 | 4331 | } else { |
4332 | ||
4333 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4334 | * RD |
4335 | */ | |
80b140af | 4336 | update_router_id_vrf(bgp); |
676f83b9 | 4337 | |
4338 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4339 | * new RD |
4340 | */ | |
d62a17ae | 4341 | hash_iterate(bgp->vnihash, |
4342 | (void (*)(struct hash_backet *, | |
4343 | void *))update_router_id_vni, | |
4344 | bgp); | |
676f83b9 | 4345 | } |
2d48ee25 | 4346 | } |
4347 | ||
bf1061d8 VB |
4348 | /* |
4349 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4350 | */ | |
4351 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4352 | { | |
4353 | hash_iterate(bgp->vnihash, | |
4354 | (void (*)(struct hash_backet *, | |
4355 | void*))update_autort_vni, | |
4356 | bgp); | |
4357 | } | |
4358 | ||
90e60aa7 | 4359 | /* |
4360 | * Handle change to export RT - update and advertise local routes. | |
4361 | */ | |
d62a17ae | 4362 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4363 | { |
d62a17ae | 4364 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4365 | } |
4366 | ||
996c9314 | 4367 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4368 | { |
4369 | if (withdraw) | |
4370 | delete_withdraw_vrf_routes(bgp_vrf); | |
4371 | else | |
4372 | update_advertise_vrf_routes(bgp_vrf); | |
4373 | } | |
4374 | ||
90e60aa7 | 4375 | /* |
4376 | * Handle change to RD. This is invoked twice by the change handler, | |
4377 | * first before the RD has been changed and then after the RD has | |
4378 | * been changed. The first invocation will result in local routes | |
4379 | * of this VNI being deleted and withdrawn and the next will result | |
4380 | * in the routes being re-advertised. | |
4381 | */ | |
d62a17ae | 4382 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4383 | int withdraw) | |
90e60aa7 | 4384 | { |
d62a17ae | 4385 | if (withdraw) |
4386 | delete_withdraw_vni_routes(bgp, vpn); | |
4387 | else | |
4388 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4389 | } |
4390 | ||
4391 | /* | |
4392 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4393 | */ | |
d62a17ae | 4394 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4395 | { |
d62a17ae | 4396 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4397 | } |
4398 | ||
4399 | /* | |
4400 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4401 | * to Import RT. | |
4402 | */ | |
d62a17ae | 4403 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4404 | { |
d62a17ae | 4405 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4406 | } |
4407 | ||
b16031a2 | 4408 | /* |
b57ba6d2 | 4409 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4410 | */ |
d7c0a89a | 4411 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4412 | int len) |
b16031a2 | 4413 | { |
b57ba6d2 | 4414 | vni_t vni1, vni2; |
b16031a2 | 4415 | |
b57ba6d2 MK |
4416 | vni1 = label2vni(label); |
4417 | if (num_labels == 2) { | |
996c9314 | 4418 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4419 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4420 | } else | |
4421 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4422 | return buf; |
b16031a2 | 4423 | } |
4424 | ||
9c92b5f7 MK |
4425 | /* |
4426 | * Function to convert evpn route to json format. | |
4427 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4428 | */ | |
57f7feb6 | 4429 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4430 | { |
b682f6de | 4431 | char buf1[ETHER_ADDR_STRLEN]; |
4432 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4433 | |
b682f6de | 4434 | if (!json) |
4435 | return; | |
9c92b5f7 | 4436 | |
dff8f48d | 4437 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4438 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4439 | json_object_int_add(json, "ethTag", |
4440 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4441 | json_object_int_add(json, "ipLen", |
3714a385 | 4442 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4443 | ? IPV4_MAX_BITLEN |
4444 | : IPV6_MAX_BITLEN); | |
b682f6de | 4445 | json_object_string_add(json, "ip", |
3714a385 | 4446 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4447 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4448 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4449 | json_object_int_add(json, "routeType", |
4450 | p->prefix.route_type); | |
3714a385 | 4451 | json_object_int_add(json, "ethTag", |
4452 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4453 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4454 | json_object_string_add(json, "mac", | |
3714a385 | 4455 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4456 | buf1, |
4457 | sizeof(buf1))); | |
dff8f48d | 4458 | } else { |
d7c0a89a | 4459 | uint8_t family; |
dff8f48d | 4460 | |
3714a385 | 4461 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4462 | : AF_INET6; |
dff8f48d | 4463 | |
b682f6de | 4464 | json_object_int_add(json, "routeType", |
57f7feb6 | 4465 | p->prefix.route_type); |
3714a385 | 4466 | json_object_int_add(json, "ethTag", |
4467 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4468 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4469 | json_object_string_add(json, "mac", |
3714a385 | 4470 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4471 | buf1, |
4472 | sizeof(buf1))); | |
b682f6de | 4473 | json_object_int_add(json, "ipLen", |
3714a385 | 4474 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4475 | ? IPV4_MAX_BITLEN |
4476 | : IPV6_MAX_BITLEN); | |
4477 | json_object_string_add( | |
4478 | json, "ip", | |
3714a385 | 4479 | inet_ntop(family, |
4480 | &p->prefix.macip_addr.ip.ip.addr, | |
4481 | buf2, | |
57f7feb6 | 4482 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4483 | } |
4484 | } else { | |
4485 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4486 | } | |
9c92b5f7 MK |
4487 | } |
4488 | ||
520d5d76 | 4489 | /* |
4490 | * Function to convert evpn route to string. | |
4491 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4492 | */ | |
d62a17ae | 4493 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4494 | { | |
4495 | char buf1[ETHER_ADDR_STRLEN]; | |
4496 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4497 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4498 | |
4499 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4500 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4501 | p->prefix.imet_addr.eth_tag, |
4502 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4503 | : IPV6_MAX_BITLEN, |
3714a385 | 4504 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4505 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4506 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4507 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4508 | p->prefix.route_type, | |
3714a385 | 4509 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4510 | 8 * ETH_ALEN, |
3714a385 | 4511 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4512 | sizeof(buf1))); |
4513 | else { | |
d7c0a89a | 4514 | uint8_t family; |
d62a17ae | 4515 | |
3714a385 | 4516 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4517 | : AF_INET6; |
554cd77a VB |
4518 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4519 | p->prefix.route_type, | |
3714a385 | 4520 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4521 | 8 * ETH_ALEN, |
3714a385 | 4522 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4523 | sizeof(buf1)), |
4524 | family == AF_INET ? IPV4_MAX_BITLEN | |
4525 | : IPV6_MAX_BITLEN, | |
3714a385 | 4526 | inet_ntop(family, |
4527 | &p->prefix.macip_addr.ip.ip.addr, | |
4528 | buf2, | |
d62a17ae | 4529 | PREFIX2STR_BUFFER)); |
4530 | } | |
342dd0c6 | 4531 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4532 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4533 | p->prefix.route_type, | |
3714a385 | 4534 | p->prefix.prefix_addr.eth_tag, |
4535 | p->prefix.prefix_addr.ip_prefix_length, | |
4536 | is_evpn_prefix_ipaddr_v4(p) | |
4537 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4538 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4539 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4540 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4541 | p->prefix.route_type, | |
4542 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4543 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4544 | : IPV6_MAX_BITLEN, | |
4545 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4546 | } else { |
b03b8898 | 4547 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4548 | snprintf(buf, len, "(unsupported route type %d)", |
4549 | p->prefix.route_type); | |
d62a17ae | 4550 | } |
4551 | ||
4552 | return (buf); | |
520d5d76 | 4553 | } |
4554 | ||
128ea8ab | 4555 | /* |
4556 | * Encode EVPN prefix in Update (MP_REACH) | |
4557 | */ | |
d62a17ae | 4558 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4559 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4560 | uint32_t num_labels, struct attr *attr, |
4561 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4562 | { |
4563 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4564 | int len, ipa_len = 0; |
d62a17ae | 4565 | |
4566 | if (addpath_encode) | |
4567 | stream_putl(s, addpath_tx_id); | |
4568 | ||
4569 | /* Route type */ | |
4570 | stream_putc(s, evp->prefix.route_type); | |
4571 | ||
4572 | switch (evp->prefix.route_type) { | |
4573 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4574 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4575 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4576 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4577 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4578 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4579 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4580 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4581 | len += 3; | |
4582 | stream_putc(s, len); | |
996c9314 | 4583 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4584 | if (attr) |
4585 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4586 | else | |
4587 | stream_put(s, 0, 10); | |
3714a385 | 4588 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4589 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4590 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4591 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4592 | if (ipa_len) /* IP */ | |
4593 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4594 | ipa_len); | |
b57ba6d2 MK |
4595 | /* 1st label is the L2 VNI */ |
4596 | stream_put(s, label, BGP_LABEL_BYTES); | |
4597 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4598 | if (ipa_len && num_labels > 1) | |
996c9314 | 4599 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4600 | break; |
4601 | ||
4602 | case BGP_EVPN_IMET_ROUTE: | |
4603 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4604 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4605 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4606 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4607 | /* Originating Router's IP Addr */ | |
3714a385 | 4608 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4609 | break; |
4610 | ||
50f74cf1 | 4611 | case BGP_EVPN_ES_ROUTE: |
4612 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4613 | stream_put(s, prd->val, 8); /* RD */ | |
4614 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4615 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4616 | /* VTEP IP */ |
4617 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4618 | break; |
4619 | ||
d62a17ae | 4620 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4621 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4622 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4623 | break; |
4624 | ||
4625 | default: | |
4626 | break; | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4631 | struct bgp_nlri *packet, int withdraw) | |
4632 | { | |
d7c0a89a QY |
4633 | uint8_t *pnt; |
4634 | uint8_t *lim; | |
d62a17ae | 4635 | afi_t afi; |
4636 | safi_t safi; | |
d7c0a89a | 4637 | uint32_t addpath_id; |
d62a17ae | 4638 | int addpath_encoded; |
4639 | int psize = 0; | |
d7c0a89a QY |
4640 | uint8_t rtype; |
4641 | uint8_t rlen; | |
d62a17ae | 4642 | struct prefix p; |
4643 | ||
d62a17ae | 4644 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4645 | pnt = packet->nlri; | |
4646 | lim = pnt + packet->length; | |
4647 | afi = packet->afi; | |
4648 | safi = packet->safi; | |
4649 | addpath_id = 0; | |
4650 | ||
4651 | addpath_encoded = | |
4652 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4653 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4654 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4655 | ||
4656 | for (; pnt < lim; pnt += psize) { | |
4657 | /* Clear prefix structure. */ | |
4658 | memset(&p, 0, sizeof(struct prefix)); | |
4659 | ||
4660 | /* Deal with path-id if AddPath is supported. */ | |
4661 | if (addpath_encoded) { | |
4662 | /* When packet overflow occurs return immediately. */ | |
4663 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4664 | return -1; | |
4665 | ||
4666 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4667 | pnt += BGP_ADDPATH_ID_LEN; | |
4668 | } | |
4669 | ||
4670 | /* All EVPN NLRI types start with type and length. */ | |
4671 | if (pnt + 2 > lim) | |
4672 | return -1; | |
4673 | ||
4674 | rtype = *pnt++; | |
4675 | psize = rlen = *pnt++; | |
4676 | ||
4677 | /* When packet overflow occur return immediately. */ | |
4678 | if (pnt + psize > lim) | |
4679 | return -1; | |
4680 | ||
4681 | switch (rtype) { | |
4682 | case BGP_EVPN_MAC_IP_ROUTE: | |
4683 | if (process_type2_route(peer, afi, safi, | |
4684 | withdraw ? NULL : attr, pnt, | |
4685 | psize, addpath_id)) { | |
4686 | zlog_err( | |
4687 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
4688 | peer->bgp->vrf_id, peer->host, psize); | |
4689 | return -1; | |
4690 | } | |
4691 | break; | |
4692 | ||
4693 | case BGP_EVPN_IMET_ROUTE: | |
4694 | if (process_type3_route(peer, afi, safi, | |
4695 | withdraw ? NULL : attr, pnt, | |
4696 | psize, addpath_id)) { | |
4697 | zlog_err( | |
4698 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
4699 | peer->bgp->vrf_id, peer->host, psize); | |
4700 | return -1; | |
4701 | } | |
4702 | break; | |
4703 | ||
50f74cf1 | 4704 | case BGP_EVPN_ES_ROUTE: |
4705 | if (process_type4_route(peer, afi, safi, | |
4706 | withdraw ? NULL : attr, pnt, | |
4707 | psize, addpath_id)) { | |
4708 | zlog_err( | |
4709 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", | |
4710 | peer->bgp->vrf_id, peer->host, psize); | |
4711 | return -1; | |
4712 | } | |
4713 | break; | |
4714 | ||
d62a17ae | 4715 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4716 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4717 | psize, addpath_id, withdraw)) { | |
4718 | zlog_err( | |
4719 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
4720 | peer->bgp->vrf_id, peer->host, psize); | |
4721 | return -1; | |
4722 | } | |
4723 | break; | |
4724 | ||
4725 | default: | |
4726 | break; | |
4727 | } | |
4728 | } | |
4729 | ||
4730 | /* Packet length consistency check. */ | |
4731 | if (pnt != lim) | |
4732 | return -1; | |
4733 | ||
4734 | return 0; | |
128ea8ab | 4735 | } |
4736 | ||
10ebe1ab MK |
4737 | /* |
4738 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4739 | * The mapping will be used during route processing. | |
4740 | * bgp_def: default bgp instance | |
4741 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4742 | */ | |
4743 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4744 | { | |
4745 | int i = 0; | |
4746 | struct ecommunity_val *eval = NULL; | |
4747 | struct listnode *node = NULL, *nnode = NULL; | |
4748 | struct ecommunity *ecom = NULL; | |
4749 | ||
4750 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4751 | for (i = 0; i < ecom->size; i++) { | |
4752 | eval = (struct ecommunity_val *)(ecom->val | |
4753 | + (i | |
4754 | * ECOMMUNITY_SIZE)); | |
4755 | map_vrf_to_rt(bgp_vrf, eval); | |
4756 | } | |
4757 | } | |
4758 | } | |
4759 | ||
4760 | /* | |
4761 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4762 | */ | |
4763 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4764 | { | |
4765 | int i; | |
4766 | struct ecommunity_val *eval; | |
4767 | struct listnode *node, *nnode; | |
4768 | struct ecommunity *ecom; | |
4769 | ||
4770 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4771 | for (i = 0; i < ecom->size; i++) { | |
4772 | struct vrf_irt_node *irt; | |
4773 | struct ecommunity_val eval_tmp; | |
4774 | ||
4775 | eval = (struct ecommunity_val *)(ecom->val | |
4776 | + (i | |
4777 | * ECOMMUNITY_SIZE)); | |
4778 | /* If using "automatic" RT, we only care about the | |
4779 | * local-admin sub-field. | |
4780 | * This is to facilitate using VNI as the RT for EBGP | |
4781 | * peering too. | |
4782 | */ | |
4783 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4784 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4785 | BGP_VRF_IMPORT_RT_CFGD)) | |
4786 | mask_ecom_global_admin(&eval_tmp, eval); | |
4787 | ||
4788 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4789 | if (irt) | |
4790 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4791 | } | |
4792 | } | |
4793 | } | |
4794 | ||
4795 | ||
128ea8ab | 4796 | /* |
4797 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4798 | * The mapping will be used during route processing. | |
4799 | */ | |
d62a17ae | 4800 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4801 | { |
d62a17ae | 4802 | int i; |
4803 | struct ecommunity_val *eval; | |
4804 | struct listnode *node, *nnode; | |
4805 | struct ecommunity *ecom; | |
128ea8ab | 4806 | |
d62a17ae | 4807 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4808 | for (i = 0; i < ecom->size; i++) { | |
4809 | eval = (struct ecommunity_val *)(ecom->val | |
4810 | + (i | |
4811 | * ECOMMUNITY_SIZE)); | |
4812 | map_vni_to_rt(bgp, vpn, eval); | |
4813 | } | |
4814 | } | |
128ea8ab | 4815 | } |
4816 | ||
4817 | /* | |
4818 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4819 | */ | |
d62a17ae | 4820 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4821 | { |
d62a17ae | 4822 | int i; |
4823 | struct ecommunity_val *eval; | |
4824 | struct listnode *node, *nnode; | |
4825 | struct ecommunity *ecom; | |
128ea8ab | 4826 | |
d62a17ae | 4827 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4828 | for (i = 0; i < ecom->size; i++) { | |
4829 | struct irt_node *irt; | |
4830 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4831 | |
d62a17ae | 4832 | eval = (struct ecommunity_val *)(ecom->val |
4833 | + (i | |
4834 | * ECOMMUNITY_SIZE)); | |
4835 | /* If using "automatic" RT, we only care about the | |
4836 | * local-admin sub-field. | |
4837 | * This is to facilitate using VNI as the RT for EBGP | |
4838 | * peering too. | |
4839 | */ | |
4840 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4841 | if (!is_import_rt_configured(vpn)) | |
4842 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4843 | |
d62a17ae | 4844 | irt = lookup_import_rt(bgp, &eval_tmp); |
4845 | if (irt) | |
4846 | unmap_vni_from_rt(bgp, vpn, irt); | |
4847 | } | |
4848 | } | |
128ea8ab | 4849 | } |
4850 | ||
4851 | /* | |
4852 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4853 | * The mapping will be used during route processing. | |
4854 | */ | |
d62a17ae | 4855 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4856 | { |
c581d8b0 | 4857 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4858 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4859 | |
d62a17ae | 4860 | /* Map RT to VNI */ |
4861 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4862 | } |
4863 | ||
4864 | /* | |
4865 | * Derive Export RT automatically for VNI. | |
4866 | */ | |
d62a17ae | 4867 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4868 | { |
c581d8b0 | 4869 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4870 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4871 | } |
4872 | ||
676f83b9 | 4873 | /* |
4874 | * Derive RD automatically for VNI using passed information - it | |
4875 | * is of the form RouterId:unique-id-for-vni. | |
4876 | */ | |
4877 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4878 | { | |
92708db6 | 4879 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4880 | } |
4881 | ||
128ea8ab | 4882 | /* |
4883 | * Derive RD automatically for VNI using passed information - it | |
4884 | * is of the form RouterId:unique-id-for-vni. | |
4885 | */ | |
d62a17ae | 4886 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4887 | { |
d62a17ae | 4888 | char buf[100]; |
128ea8ab | 4889 | |
d62a17ae | 4890 | vpn->prd.family = AF_UNSPEC; |
4891 | vpn->prd.prefixlen = 64; | |
4892 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4893 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4894 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4895 | } |
4896 | ||
4897 | /* | |
4898 | * Lookup VNI. | |
4899 | */ | |
d62a17ae | 4900 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4901 | { |
d62a17ae | 4902 | struct bgpevpn *vpn; |
4903 | struct bgpevpn tmp; | |
128ea8ab | 4904 | |
d62a17ae | 4905 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4906 | tmp.vni = vni; | |
4907 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4908 | return vpn; | |
128ea8ab | 4909 | } |
4910 | ||
4911 | /* | |
4912 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4913 | */ | |
d62a17ae | 4914 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4915 | struct in_addr originator_ip, |
4916 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4917 | { |
d62a17ae | 4918 | struct bgpevpn *vpn; |
128ea8ab | 4919 | |
d62a17ae | 4920 | if (!bgp) |
4921 | return NULL; | |
128ea8ab | 4922 | |
d62a17ae | 4923 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4924 | if (!vpn) | |
4925 | return NULL; | |
128ea8ab | 4926 | |
d62a17ae | 4927 | /* Set values - RD and RT set to defaults. */ |
4928 | vpn->vni = vni; | |
4929 | vpn->originator_ip = originator_ip; | |
29c53922 | 4930 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4931 | |
d62a17ae | 4932 | /* Initialize route-target import and export lists */ |
4933 | vpn->import_rtl = list_new(); | |
4934 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4935 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4936 | vpn->export_rtl = list_new(); |
4937 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4938 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4939 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4940 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4941 | |
d62a17ae | 4942 | /* Initialize EVPN route table. */ |
960035b2 | 4943 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4944 | |
d62a17ae | 4945 | /* Add to hash */ |
4946 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4947 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4948 | return NULL; | |
4949 | } | |
6a8657d0 MK |
4950 | |
4951 | /* add to l2vni list on corresponding vrf */ | |
4952 | bgpevpn_link_to_l3vni(vpn); | |
4953 | ||
d62a17ae | 4954 | QOBJ_REG(vpn, bgpevpn); |
4955 | return vpn; | |
128ea8ab | 4956 | } |
4957 | ||
4958 | /* | |
4959 | * Free a given VPN - called in multiple scenarios such as zebra | |
4960 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4961 | * This just frees appropriate memory, caller should have taken other | |
4962 | * needed actions. | |
4963 | */ | |
d62a17ae | 4964 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4965 | { |
6a8657d0 | 4966 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4967 | bgp_table_unlock(vpn->route_table); |
4968 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4969 | list_delete_and_null(&vpn->import_rtl); |
4970 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4971 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4972 | hash_release(bgp->vnihash, vpn); |
4973 | QOBJ_UNREG(vpn); | |
4974 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4975 | } |
4976 | ||
4977 | /* | |
50f74cf1 | 4978 | * Lookup local ES. |
4979 | */ | |
4980 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
4981 | { | |
4982 | struct evpnes *es; | |
4983 | struct evpnes tmp; | |
4984 | ||
4985 | memset(&tmp, 0, sizeof(struct evpnes)); | |
4986 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
4987 | es = hash_lookup(bgp->esihash, &tmp); | |
4988 | return es; | |
4989 | } | |
4990 | ||
4991 | /* | |
4992 | * Create a new local es - invoked upon zebra notification. | |
4993 | */ | |
4994 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
4995 | esi_t *esi, | |
4996 | struct ipaddr *originator_ip) | |
4997 | { | |
4998 | char buf[100]; | |
4999 | struct evpnes *es; | |
5000 | ||
5001 | if (!bgp) | |
5002 | return NULL; | |
5003 | ||
5004 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5005 | if (!es) | |
5006 | return NULL; | |
5007 | ||
5008 | /* set the ESI and originator_ip */ | |
5009 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5010 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5011 | ||
5012 | /* Initialise the VTEP list */ | |
5013 | es->vtep_list = list_new(); | |
5014 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5015 | ||
5016 | /* auto derive RD for this es */ | |
5017 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5018 | es->prd.family = AF_UNSPEC; | |
5019 | es->prd.prefixlen = 64; | |
5020 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5021 | (void)str2prefix_rd(buf, &es->prd); | |
5022 | ||
5023 | /* Initialize the ES route table */ | |
5024 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5025 | ||
5026 | /* Add to hash */ | |
5027 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5028 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5029 | return NULL; | |
5030 | } | |
5031 | ||
5032 | QOBJ_REG(es, evpnes); | |
5033 | return es; | |
5034 | } | |
5035 | ||
5036 | /* | |
5037 | * Free a given ES - | |
5038 | * This just frees appropriate memory, caller should have taken other | |
5039 | * needed actions. | |
5040 | */ | |
5041 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5042 | { | |
5043 | list_delete_and_null(&es->vtep_list); | |
5044 | bgp_table_unlock(es->route_table); | |
5045 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5046 | hash_release(bgp->esihash, es); | |
5047 | QOBJ_UNREG(es); | |
5048 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5049 | } | |
5050 | ||
5051 | /* | |
5052 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5053 | */ |
d62a17ae | 5054 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5055 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5056 | { |
d62a17ae | 5057 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 5058 | } |
5059 | ||
5060 | /* | |
50f74cf1 | 5061 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5062 | */ |
d62a17ae | 5063 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5064 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5065 | { |
d62a17ae | 5066 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 5067 | } |
5068 | ||
db0e1937 MK |
5069 | /* filter routes which have martian next hops */ |
5070 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5071 | { | |
0291c246 MK |
5072 | afi_t afi; |
5073 | safi_t safi; | |
5074 | struct bgp_node *rd_rn, *rn; | |
5075 | struct bgp_table *table; | |
5076 | struct bgp_info *ri; | |
db0e1937 MK |
5077 | |
5078 | afi = AFI_L2VPN; | |
5079 | safi = SAFI_EVPN; | |
5080 | ||
5081 | /* Walk entire global routing table and evaluate routes which could be | |
5082 | * imported into this VPN. Note that we cannot just look at the routes | |
5083 | * for the VNI's RD - | |
5084 | * remote routes applicable for this VNI could have any RD. | |
5085 | */ | |
5086 | /* EVPN routes are a 2-level table. */ | |
5087 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5088 | rd_rn = bgp_route_next(rd_rn)) { | |
5089 | table = (struct bgp_table *)(rd_rn->info); | |
5090 | if (!table) | |
5091 | continue; | |
5092 | ||
5093 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5094 | ||
5095 | for (ri = rn->info; ri; ri = ri->next) { | |
5096 | ||
5097 | /* Consider "valid" remote routes applicable for | |
5098 | * this VNI. */ | |
5099 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
5100 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
5101 | continue; | |
5102 | ||
60466a63 | 5103 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
5104 | |
5105 | char attr_str[BUFSIZ]; | |
5106 | char pbuf[PREFIX_STRLEN]; | |
5107 | ||
5108 | bgp_dump_attr(ri->attr, attr_str, | |
5109 | BUFSIZ); | |
5110 | ||
5111 | if (bgp_debug_update(ri->peer, &rn->p, | |
5112 | NULL, 1)) | |
5113 | zlog_debug( | |
b682f6de | 5114 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5115 | bgp->vrf_id, |
5116 | prefix2str( | |
60466a63 | 5117 | &rn->p, pbuf, |
db0e1937 MK |
5118 | sizeof(pbuf)), |
5119 | attr_str); | |
5120 | ||
5121 | bgp_evpn_unimport_route(bgp, afi, safi, | |
5122 | &rn->p, ri); | |
5123 | ||
60466a63 QY |
5124 | bgp_rib_remove(rn, ri, ri->peer, afi, |
5125 | safi); | |
db0e1937 | 5126 | } |
db0e1937 MK |
5127 | } |
5128 | } | |
5129 | } | |
5130 | ||
5131 | return 0; | |
5132 | } | |
5133 | ||
128ea8ab | 5134 | /* |
5135 | * Handle del of a local MACIP. | |
5136 | */ | |
d62a17ae | 5137 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5138 | struct ipaddr *ip) | |
128ea8ab | 5139 | { |
d62a17ae | 5140 | struct bgpevpn *vpn; |
5141 | struct prefix_evpn p; | |
128ea8ab | 5142 | |
d62a17ae | 5143 | /* Lookup VNI hash - should exist. */ |
5144 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5145 | if (!vpn || !is_vni_live(vpn)) { | |
5146 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
5147 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5148 | return -1; | |
5149 | } | |
128ea8ab | 5150 | |
d62a17ae | 5151 | /* Remove EVPN type-2 route and schedule for processing. */ |
5152 | build_evpn_type2_prefix(&p, mac, ip); | |
5153 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5154 | |
d62a17ae | 5155 | return 0; |
128ea8ab | 5156 | } |
5157 | ||
5158 | /* | |
5159 | * Handle add of a local MACIP. | |
5160 | */ | |
d62a17ae | 5161 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
d7c0a89a | 5162 | struct ipaddr *ip, uint8_t flags) |
128ea8ab | 5163 | { |
d62a17ae | 5164 | struct bgpevpn *vpn; |
5165 | struct prefix_evpn p; | |
128ea8ab | 5166 | |
d62a17ae | 5167 | /* Lookup VNI hash - should exist. */ |
5168 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5169 | if (!vpn || !is_vni_live(vpn)) { | |
5170 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
5171 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5172 | return -1; | |
5173 | } | |
128ea8ab | 5174 | |
d62a17ae | 5175 | /* Create EVPN type-2 route and schedule for processing. */ |
5176 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 5177 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 5178 | char buf[ETHER_ADDR_STRLEN]; |
5179 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5180 | |
d62a17ae | 5181 | zlog_err( |
ead40654 | 5182 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5183 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5184 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5185 | ? "sticky gateway" | |
5186 | : "", | |
d62a17ae | 5187 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5188 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5189 | return -1; |
5190 | } | |
128ea8ab | 5191 | |
d62a17ae | 5192 | return 0; |
128ea8ab | 5193 | } |
5194 | ||
6a8657d0 MK |
5195 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5196 | struct bgp *bgp_vrf) | |
5197 | { | |
5198 | struct bgpevpn *vpn = NULL; | |
5199 | struct bgp *bgp_def = NULL; | |
5200 | ||
5201 | bgp_def = bgp_get_default(); | |
5202 | assert(bgp_def); | |
5203 | ||
5204 | vpn = (struct bgpevpn *)backet->data; | |
5205 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
5206 | bgpevpn_link_to_l3vni(vpn); | |
5207 | } | |
5208 | ||
996c9314 LB |
5209 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5210 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5211 | { |
5212 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5213 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5214 | struct listnode *node = NULL; |
5215 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5216 | as_t as = 0; |
5217 | ||
5218 | /* get the default instamce - required to get the AS number for VRF | |
523cafc4 | 5219 | * auto-creatio |
5220 | */ | |
fe1dc5a3 MK |
5221 | bgp_def = bgp_get_default(); |
5222 | if (!bgp_def) { | |
996c9314 LB |
5223 | zlog_err( |
5224 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
5225 | l3vni); | |
fe1dc5a3 MK |
5226 | return -1; |
5227 | } | |
5228 | as = bgp_def->as; | |
5229 | ||
5230 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5231 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5232 | if (!bgp_vrf) { |
5233 | ||
5234 | int ret = 0; | |
5235 | ||
5236 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5237 | BGP_INSTANCE_TYPE_VRF); | |
5238 | switch (ret) { | |
5239 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
5240 | zlog_err("'bgp multiple-instance' not present\n"); | |
5241 | return -1; | |
5242 | case BGP_ERR_AS_MISMATCH: | |
5243 | zlog_err("BGP is already running; AS is %u\n", as); | |
5244 | return -1; | |
5245 | case BGP_ERR_INSTANCE_MISMATCH: | |
5246 | zlog_err("BGP instance name and AS number mismatch\n"); | |
5247 | return -1; | |
5248 | } | |
5249 | ||
5250 | /* mark as auto created */ | |
5251 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5252 | } | |
5253 | ||
5254 | /* associate with l3vni */ | |
5255 | bgp_vrf->l3vni = l3vni; | |
5256 | ||
5257 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5258 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5259 | ||
b67a60d2 | 5260 | /* set the originator ip */ |
5261 | bgp_vrf->originator_ip = originator_ip; | |
5262 | ||
c48d9f5f MK |
5263 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5264 | if (filter) | |
5265 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5266 | ||
c581d8b0 MK |
5267 | /* auto derive RD/RT */ |
5268 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5269 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5270 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5271 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5272 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5273 | |
6a8657d0 MK |
5274 | /* link all corresponding l2vnis */ |
5275 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5276 | (void (*)(struct hash_backet *, |
5277 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5278 | bgp_vrf); |
5279 | ||
c48d9f5f MK |
5280 | /* Only update all corresponding type-2 routes if we are advertising two |
5281 | * labels along with type-2 routes | |
5282 | */ | |
5283 | if (!filter) | |
5284 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5285 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5286 | |
06d2e8f3 MK |
5287 | /* advertise type-5 routes if needed */ |
5288 | update_advertise_vrf_routes(bgp_vrf); | |
5289 | ||
5ba238b7 MK |
5290 | /* install all remote routes belonging to this l3vni into correspondng |
5291 | * vrf */ | |
5292 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5293 | |
5294 | return 0; | |
5295 | } | |
5296 | ||
996c9314 | 5297 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5298 | { |
5299 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5300 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5301 | struct listnode *node = NULL; | |
18abc1eb | 5302 | struct listnode *next = NULL; |
f1f8b53c | 5303 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5304 | |
5305 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5306 | if (!bgp_vrf) { | |
996c9314 LB |
5307 | zlog_err( |
5308 | "Cannot process L3VNI %u Del - Could not find BGP instance", | |
5309 | l3vni); | |
fe1dc5a3 MK |
5310 | return -1; |
5311 | } | |
5312 | ||
f1f8b53c MK |
5313 | bgp_def = bgp_get_default(); |
5314 | if (!bgp_def) { | |
996c9314 LB |
5315 | zlog_err( |
5316 | "Cannot process L3VNI %u Del - Could not find default BGP instance", | |
5317 | l3vni); | |
f1f8b53c MK |
5318 | return -1; |
5319 | } | |
5320 | ||
1eb88002 | 5321 | /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will |
523cafc4 | 5322 | * take care of uninstalling the routes from zebra |
5323 | */ | |
1eb88002 MK |
5324 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) |
5325 | uninstall_routes_for_vrf(bgp_vrf); | |
5ba238b7 | 5326 | |
06d2e8f3 MK |
5327 | /* delete/withdraw all type-5 routes */ |
5328 | delete_withdraw_vrf_routes(bgp_vrf); | |
5329 | ||
fe1dc5a3 MK |
5330 | /* remove the l3vni from vrf instance */ |
5331 | bgp_vrf->l3vni = 0; | |
5332 | ||
5333 | /* remove the Rmac from the BGP vrf */ | |
5334 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5335 | ||
c581d8b0 | 5336 | /* delete RD/RT */ |
1525e99f | 5337 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5338 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5339 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5340 | } |
1525e99f | 5341 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5342 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5343 | } |
fe1dc5a3 | 5344 | |
f1f8b53c | 5345 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5346 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5347 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5348 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5349 | update_routes_for_vni(bgp_def, vpn); | |
5350 | } | |
5351 | } | |
fe1dc5a3 | 5352 | |
18abc1eb | 5353 | /* If any L2VNIs point to this instance, unlink them. */ |
5354 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5355 | bgpevpn_unlink_from_l3vni(vpn); | |
5356 | ||
fe1dc5a3 MK |
5357 | /* Delete the instance if it was autocreated */ |
5358 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5359 | bgp_delete(bgp_vrf); | |
5360 | ||
5361 | return 0; | |
5362 | } | |
5363 | ||
128ea8ab | 5364 | /* |
5365 | * Handle del of a local VNI. | |
5366 | */ | |
d62a17ae | 5367 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5368 | { |
d62a17ae | 5369 | struct bgpevpn *vpn; |
128ea8ab | 5370 | |
d62a17ae | 5371 | /* Locate VNI hash */ |
5372 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5373 | if (!vpn) { | |
1e00627b | 5374 | if (bgp_debug_zebra(NULL)) |
3518f352 DS |
5375 | zlog_warn( |
5376 | "%u: VNI hash entry for VNI %u not found at DEL", | |
5377 | bgp->vrf_id, vni); | |
d62a17ae | 5378 | return 0; |
5379 | } | |
128ea8ab | 5380 | |
d62a17ae | 5381 | /* Remove all local EVPN routes and schedule for processing (to |
5382 | * withdraw from peers). | |
5383 | */ | |
5384 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5385 | |
db0e1937 MK |
5386 | /* |
5387 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5388 | */ | |
5389 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5390 | ||
d62a17ae | 5391 | /* Clear "live" flag and see if hash needs to be freed. */ |
5392 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5393 | if (!is_vni_configured(vpn)) | |
5394 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5395 | |
d62a17ae | 5396 | return 0; |
128ea8ab | 5397 | } |
5398 | ||
5399 | /* | |
d1911c26 | 5400 | * Handle add (or update) of a local VNI. The VNI changes we care |
5401 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5402 | */ |
d62a17ae | 5403 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5404 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5405 | { |
5406 | struct bgpevpn *vpn; | |
5407 | struct prefix_evpn p; | |
5408 | ||
d62a17ae | 5409 | /* Lookup VNI. If present and no change, exit. */ |
5410 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5411 | if (vpn) { |
29c53922 | 5412 | |
d1911c26 | 5413 | if (is_vni_live(vpn) |
5414 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5415 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5416 | /* Probably some other param has changed that we don't | |
5417 | * care about. */ | |
5418 | return 0; | |
5419 | ||
5420 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5421 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5422 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5423 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5424 | bgpevpn_link_to_l3vni(vpn); |
5425 | } | |
29c53922 | 5426 | |
d1911c26 | 5427 | /* If tunnel endpoint IP has changed, update (and delete prior |
5428 | * type-3 route, if needed.) | |
5429 | */ | |
5430 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5431 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5432 | |
d1911c26 | 5433 | /* Update all routes with new endpoint IP and/or export RT |
5434 | * for VRFs | |
5435 | */ | |
5436 | if (is_vni_live(vpn)) | |
5437 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5438 | } |
5439 | ||
5440 | /* Create or update as appropriate. */ | |
5441 | if (!vpn) { | |
29c53922 | 5442 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5443 | if (!vpn) { |
5444 | zlog_err( | |
5445 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
5446 | bgp->vrf_id, vni); | |
5447 | return -1; | |
5448 | } | |
5449 | } | |
5450 | ||
db0e1937 | 5451 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5452 | if (is_vni_live(vpn)) |
5453 | return 0; | |
5454 | ||
d62a17ae | 5455 | /* Mark as "live" */ |
5456 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5457 | ||
db0e1937 MK |
5458 | /* tunnel is now active, add tunnel-ip to db */ |
5459 | bgp_tip_add(bgp, &originator_ip); | |
5460 | ||
5461 | /* filter routes as nexthop database has changed */ | |
5462 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5463 | ||
d62a17ae | 5464 | /* Create EVPN type-3 route and schedule for processing. */ |
5465 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5466 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
5467 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
5468 | bgp->vrf_id, vni); | |
5469 | return -1; | |
5470 | } | |
5471 | ||
5472 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5473 | * VNI, | |
5474 | * install them. | |
5475 | */ | |
5476 | install_routes_for_vni(bgp, vpn); | |
5477 | ||
d7d97010 MK |
5478 | /* If we are advertising gateway mac-ip |
5479 | It needs to be conveyed again to zebra */ | |
5480 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5481 | ||
d62a17ae | 5482 | return 0; |
b18825eb | 5483 | } |
14c1a7bf | 5484 | |
50f74cf1 | 5485 | /* |
5486 | * bgp_evpn_local_es_del | |
5487 | */ | |
5488 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5489 | esi_t *esi, | |
5490 | struct ipaddr *originator_ip) | |
5491 | { | |
5492 | char buf[ESI_STR_LEN]; | |
5493 | struct evpnes *es = NULL; | |
5494 | ||
5495 | if (!bgp->esihash) { | |
5496 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5497 | return -1; | |
5498 | } | |
5499 | ||
5500 | /* Lookup ESI hash - should exist. */ | |
5501 | es = bgp_evpn_lookup_es(bgp, esi); | |
5502 | if (!es) { | |
5503 | zlog_warn("%u: ESI hash entry for ESI %s at Local ES DEL", | |
5504 | bgp->vrf_id, | |
5505 | esi_to_str(esi, buf, sizeof(buf))); | |
5506 | return -1; | |
5507 | } | |
5508 | ||
5509 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5510 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5511 | */ |
5512 | delete_routes_for_es(bgp, es); | |
5513 | ||
5514 | /* free the hash entry */ | |
5515 | bgp_evpn_es_free(bgp, es); | |
5516 | ||
5517 | return 0; | |
5518 | } | |
5519 | ||
5520 | /* | |
5521 | * bgp_evpn_local_es_add | |
5522 | */ | |
5523 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5524 | esi_t *esi, | |
5525 | struct ipaddr *originator_ip) | |
5526 | { | |
5527 | char buf[ESI_STR_LEN]; | |
5528 | struct evpnes *es = NULL; | |
5529 | struct prefix_evpn p; | |
5530 | ||
5531 | if (!bgp->esihash) { | |
5532 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5533 | return -1; | |
5534 | } | |
5535 | ||
5536 | /* create the new es */ | |
2bb9eff4 | 5537 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5538 | if (!es) { |
5539 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5540 | if (!es) { | |
5541 | zlog_err( | |
5542 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
5543 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5544 | return -1; | |
5545 | } | |
5546 | } | |
5547 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5548 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5549 | ||
5550 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5551 | if (update_evpn_type4_route(bgp, es, &p)) { | |
5552 | zlog_err("%u: Type4 route creation failure for ESI %s", | |
5553 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5554 | return -1; | |
5555 | } | |
5556 | ||
5557 | /* import all remote ES routes in th ES table */ | |
5558 | install_routes_for_es(bgp, es); | |
5559 | ||
5560 | return 0; | |
5561 | } | |
5562 | ||
7724c0a1 | 5563 | /* |
5564 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5565 | * EVPN routes from peers. | |
5566 | */ | |
d62a17ae | 5567 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5568 | { |
9d303b37 DL |
5569 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5570 | void *))cleanup_vni_on_disable, | |
5571 | bgp); | |
7724c0a1 | 5572 | } |
5573 | ||
14c1a7bf | 5574 | /* |
5575 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5576 | * BGP instance (default) is being freed. | |
5577 | */ | |
d62a17ae | 5578 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5579 | { |
1525e99f DS |
5580 | hash_iterate(bgp->vnihash, |
5581 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5582 | bgp); | |
5583 | ||
5584 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5585 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5586 | |
5587 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5588 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5589 | |
5590 | hash_free(bgp->vnihash); | |
d62a17ae | 5591 | bgp->vnihash = NULL; |
50f74cf1 | 5592 | if (bgp->esihash) |
5593 | hash_free(bgp->esihash); | |
5594 | bgp->esihash = NULL; | |
1525e99f DS |
5595 | |
5596 | list_delete_and_null(&bgp->vrf_import_rtl); | |
5597 | list_delete_and_null(&bgp->vrf_export_rtl); | |
5598 | list_delete_and_null(&bgp->l2vnis); | |
14c1a7bf | 5599 | } |
5600 | ||
5601 | /* | |
5602 | * Initialization for EVPN | |
5603 | * Create | |
5604 | * VNI hash table | |
5605 | * hash for RT to VNI | |
14c1a7bf | 5606 | */ |
d62a17ae | 5607 | void bgp_evpn_init(struct bgp *bgp) |
5608 | { | |
5609 | bgp->vnihash = | |
5610 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5611 | bgp->esihash = |
5612 | hash_create(esi_hash_keymake, esi_cmp, | |
5613 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5614 | bgp->import_rt_hash = |
5615 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5616 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5617 | bgp->vrf_import_rt_hash = |
5618 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5619 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5620 | bgp->vrf_import_rtl = list_new(); |
5621 | bgp->vrf_import_rtl->cmp = | |
5622 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5623 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5624 | bgp->vrf_export_rtl = list_new(); |
5625 | bgp->vrf_export_rtl->cmp = | |
5626 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5627 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5628 | bgp->l2vnis = list_new(); |
996c9314 | 5629 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5630 | } |
10ebe1ab MK |
5631 | |
5632 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5633 | { | |
5634 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5635 | } |