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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
32 | #include "bitfield.h" | |
128ea8ab | 33 | #include "zclient.h" |
7ef5a232 PG |
34 | |
35 | #include "bgpd/bgp_attr_evpn.h" | |
36 | #include "bgpd/bgpd.h" | |
37 | #include "bgpd/bgp_table.h" | |
38 | #include "bgpd/bgp_route.h" | |
39 | #include "bgpd/bgp_attr.h" | |
40 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 41 | #include "bgpd/bgp_label.h" |
7ef5a232 | 42 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 43 | #include "bgpd/bgp_evpn_private.h" |
44 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 45 | #include "bgpd/bgp_encap_types.h" |
46 | #include "bgpd/bgp_debug.h" | |
47 | #include "bgpd/bgp_aspath.h" | |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 50 | |
51 | /* | |
52 | * Definitions and external declarations. | |
53 | */ | |
54 | extern struct zclient *zclient; | |
55 | ||
56 | DEFINE_QOBJ_TYPE(bgpevpn) | |
57 | ||
58 | ||
59 | /* | |
60 | * Static function declarations | |
61 | */ | |
d62a17ae | 62 | static void delete_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
63 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
64 | struct bgp_info **ri); | |
65 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); | |
14c1a7bf | 66 | |
67 | /* | |
68 | * Private functions. | |
69 | */ | |
70 | ||
71 | /* | |
72 | * Make vni hash key. | |
73 | */ | |
d62a17ae | 74 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 75 | { |
d62a17ae | 76 | struct bgpevpn *vpn = p; |
77 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 78 | } |
79 | ||
80 | /* | |
81 | * Comparison function for vni hash | |
82 | */ | |
d62a17ae | 83 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 84 | { |
d62a17ae | 85 | const struct bgpevpn *vpn1 = p1; |
86 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 87 | |
d62a17ae | 88 | if (!vpn1 && !vpn2) |
89 | return 1; | |
90 | if (!vpn1 || !vpn2) | |
91 | return 0; | |
92 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 93 | } |
94 | ||
10ebe1ab MK |
95 | /* |
96 | * Make vrf import route target hash key. | |
97 | */ | |
98 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
99 | { | |
100 | struct vrf_irt_node *irt = p; | |
101 | char *pnt = irt->rt.val; | |
102 | unsigned int key = 0; | |
103 | int c = 0; | |
104 | ||
105 | key += pnt[c]; | |
106 | key += pnt[c + 1]; | |
107 | key += pnt[c + 2]; | |
108 | key += pnt[c + 3]; | |
109 | key += pnt[c + 4]; | |
110 | key += pnt[c + 5]; | |
111 | key += pnt[c + 6]; | |
112 | key += pnt[c + 7]; | |
113 | ||
114 | return key; | |
115 | } | |
116 | ||
117 | /* | |
118 | * Comparison function for vrf import rt hash | |
119 | */ | |
120 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
121 | { | |
122 | const struct vrf_irt_node *irt1 = p1; | |
123 | const struct vrf_irt_node *irt2 = p2; | |
124 | ||
125 | if (irt1 == NULL && irt2 == NULL) | |
126 | return 1; | |
127 | ||
128 | if (irt1 == NULL || irt2 == NULL) | |
129 | return 0; | |
130 | ||
131 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
132 | } | |
133 | ||
134 | /* | |
135 | * Create a new vrf import_rt in default instance | |
136 | */ | |
137 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
138 | { | |
139 | struct bgp *bgp_def = NULL; | |
140 | struct vrf_irt_node *irt; | |
141 | ||
142 | bgp_def = bgp_get_default(); | |
143 | if (!bgp_def) { | |
144 | zlog_err("vrf import rt new - def instance not created yet"); | |
145 | return NULL; | |
146 | } | |
147 | ||
148 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
149 | sizeof(struct vrf_irt_node)); | |
150 | if (!irt) | |
151 | return NULL; | |
152 | ||
153 | irt->rt = *rt; | |
154 | irt->vrfs = list_new(); | |
155 | ||
156 | /* Add to hash */ | |
157 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
158 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
159 | return NULL; | |
160 | } | |
161 | ||
162 | return irt; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Free the vrf import rt node | |
167 | */ | |
168 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
169 | { | |
170 | struct bgp *bgp_def = NULL; | |
171 | ||
172 | bgp_def = bgp_get_default(); | |
173 | if (!bgp_def) { | |
174 | zlog_err("vrf import rt free - def instance not created yet"); | |
175 | return; | |
176 | } | |
177 | ||
178 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
179 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
180 | } | |
181 | ||
182 | /* | |
183 | * Function to lookup Import RT node - used to map a RT to set of | |
184 | * VNIs importing routes with that RT. | |
185 | */ | |
186 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
187 | { | |
188 | struct bgp *bgp_def = NULL; | |
189 | struct vrf_irt_node *irt; | |
190 | struct vrf_irt_node tmp; | |
191 | ||
192 | bgp_def = bgp_get_default(); | |
193 | if (!bgp_def) { | |
194 | zlog_err("vrf import rt lookup - def instance not created yet"); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
199 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
200 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
201 | return irt; | |
202 | } | |
203 | ||
204 | /* | |
205 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
206 | */ | |
207 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, | |
208 | struct bgp *bgp_vrf) | |
209 | { | |
210 | struct listnode *node = NULL, *nnode = NULL; | |
211 | struct bgp *tmp_bgp_vrf = NULL; | |
212 | ||
213 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
214 | if (tmp_bgp_vrf == bgp_vrf) | |
215 | return 1; | |
216 | } | |
217 | return 0; | |
218 | } | |
219 | ||
14c1a7bf | 220 | /* |
221 | * Make import route target hash key. | |
222 | */ | |
d62a17ae | 223 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 224 | { |
d62a17ae | 225 | struct irt_node *irt = p; |
226 | char *pnt = irt->rt.val; | |
227 | unsigned int key = 0; | |
228 | int c = 0; | |
14c1a7bf | 229 | |
d62a17ae | 230 | key += pnt[c]; |
231 | key += pnt[c + 1]; | |
232 | key += pnt[c + 2]; | |
233 | key += pnt[c + 3]; | |
234 | key += pnt[c + 4]; | |
235 | key += pnt[c + 5]; | |
236 | key += pnt[c + 6]; | |
237 | key += pnt[c + 7]; | |
14c1a7bf | 238 | |
d62a17ae | 239 | return (key); |
14c1a7bf | 240 | } |
241 | ||
242 | /* | |
243 | * Comparison function for import rt hash | |
244 | */ | |
d62a17ae | 245 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 246 | { |
d62a17ae | 247 | const struct irt_node *irt1 = p1; |
248 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 249 | |
d62a17ae | 250 | if (irt1 == NULL && irt2 == NULL) |
251 | return 1; | |
14c1a7bf | 252 | |
d62a17ae | 253 | if (irt1 == NULL || irt2 == NULL) |
254 | return 0; | |
14c1a7bf | 255 | |
d62a17ae | 256 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 257 | } |
258 | ||
7724c0a1 | 259 | /* |
128ea8ab | 260 | * Create a new import_rt |
261 | */ | |
d62a17ae | 262 | static struct irt_node *import_rt_new(struct bgp *bgp, |
263 | struct ecommunity_val *rt) | |
128ea8ab | 264 | { |
d62a17ae | 265 | struct irt_node *irt; |
128ea8ab | 266 | |
d62a17ae | 267 | if (!bgp) |
268 | return NULL; | |
128ea8ab | 269 | |
d62a17ae | 270 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
271 | if (!irt) | |
272 | return NULL; | |
128ea8ab | 273 | |
d62a17ae | 274 | irt->rt = *rt; |
275 | irt->vnis = list_new(); | |
128ea8ab | 276 | |
d62a17ae | 277 | /* Add to hash */ |
278 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
279 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
280 | return NULL; | |
281 | } | |
128ea8ab | 282 | |
d62a17ae | 283 | return irt; |
128ea8ab | 284 | } |
285 | ||
286 | /* | |
287 | * Free the import rt node | |
7724c0a1 | 288 | */ |
d62a17ae | 289 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 290 | { |
d62a17ae | 291 | hash_release(bgp->import_rt_hash, irt); |
292 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
7724c0a1 | 293 | } |
294 | ||
14c1a7bf | 295 | /* |
128ea8ab | 296 | * Function to lookup Import RT node - used to map a RT to set of |
297 | * VNIs importing routes with that RT. | |
298 | */ | |
d62a17ae | 299 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
300 | struct ecommunity_val *rt) | |
128ea8ab | 301 | { |
d62a17ae | 302 | struct irt_node *irt; |
303 | struct irt_node tmp; | |
128ea8ab | 304 | |
d62a17ae | 305 | memset(&tmp, 0, sizeof(struct irt_node)); |
306 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
307 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
308 | return irt; | |
128ea8ab | 309 | } |
310 | ||
311 | /* | |
312 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
313 | */ | |
d62a17ae | 314 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 315 | { |
d62a17ae | 316 | struct listnode *node, *nnode; |
317 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 318 | |
d62a17ae | 319 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
320 | if (tmp_vpn == vpn) | |
321 | return 1; | |
322 | } | |
128ea8ab | 323 | |
d62a17ae | 324 | return 0; |
128ea8ab | 325 | } |
326 | ||
327 | /* | |
328 | * Compare Route Targets. | |
329 | */ | |
d62a17ae | 330 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
331 | struct ecommunity *ecom2) | |
128ea8ab | 332 | { |
d62a17ae | 333 | if (ecom1 && !ecom2) |
334 | return -1; | |
128ea8ab | 335 | |
d62a17ae | 336 | if (!ecom1 && ecom2) |
337 | return 1; | |
128ea8ab | 338 | |
d62a17ae | 339 | if (!ecom1 && !ecom2) |
340 | return 0; | |
128ea8ab | 341 | |
d62a17ae | 342 | if (ecom1->str && !ecom2->str) |
343 | return -1; | |
128ea8ab | 344 | |
d62a17ae | 345 | if (!ecom1->str && ecom2->str) |
346 | return 1; | |
128ea8ab | 347 | |
d62a17ae | 348 | if (!ecom1->str && !ecom2->str) |
349 | return 0; | |
128ea8ab | 350 | |
d62a17ae | 351 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 352 | } |
353 | ||
354 | /* | |
355 | * Mask off global-admin field of specified extended community (RT), | |
356 | * just retain the local-admin field. | |
357 | */ | |
d62a17ae | 358 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
359 | struct ecommunity_val *src) | |
128ea8ab | 360 | { |
d62a17ae | 361 | u_char type; |
128ea8ab | 362 | |
d62a17ae | 363 | type = src->val[0]; |
364 | dst->val[0] = 0; | |
365 | if (type == ECOMMUNITY_ENCODE_AS) { | |
366 | dst->val[2] = dst->val[3] = 0; | |
367 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
368 | || type == ECOMMUNITY_ENCODE_IP) { | |
369 | dst->val[2] = dst->val[3] = 0; | |
370 | dst->val[4] = dst->val[5] = 0; | |
371 | } | |
128ea8ab | 372 | } |
373 | ||
10ebe1ab MK |
374 | /* |
375 | * Map one RT to specified VRF. | |
376 | * bgp_vrf = BGP vrf instance | |
377 | */ | |
378 | static void map_vrf_to_rt(struct bgp *bgp_vrf, | |
379 | struct ecommunity_val *eval) | |
380 | { | |
381 | struct vrf_irt_node *irt = NULL; | |
382 | struct ecommunity_val eval_tmp; | |
383 | ||
384 | /* If using "automatic" RT, | |
385 | * we only care about the local-admin sub-field. | |
386 | * This is to facilitate using L3VNI(VRF-VNI) | |
387 | * as the RT for EBGP peering too. | |
388 | */ | |
389 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
390 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
391 | BGP_VRF_IMPORT_RT_CFGD)) | |
392 | mask_ecom_global_admin(&eval_tmp, eval); | |
393 | ||
394 | irt = lookup_vrf_import_rt(&eval_tmp); | |
395 | if (irt && irt->vrfs) | |
396 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
397 | /* Already mapped. */ | |
398 | return; | |
399 | ||
400 | if (!irt) { | |
401 | irt = vrf_import_rt_new(&eval_tmp); | |
402 | assert(irt); | |
403 | } | |
404 | ||
405 | /* Add VRF to the list for this RT. */ | |
406 | listnode_add(irt->vrfs, bgp_vrf); | |
407 | } | |
408 | ||
409 | /* | |
410 | * Unmap specified VRF from specified RT. If there are no other | |
411 | * VRFs for this RT, then the RT hash is deleted. | |
412 | * bgp_vrf: BGP VRF specific instance | |
413 | */ | |
414 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, | |
415 | struct vrf_irt_node *irt) | |
416 | { | |
417 | /* Delete VRF from list for this RT. */ | |
418 | listnode_delete(irt->vrfs, bgp_vrf); | |
419 | if (!listnode_head(irt->vrfs)) { | |
bb7a24ab | 420 | list_delete_and_null(&irt->vrfs); |
10ebe1ab MK |
421 | vrf_import_rt_free(irt); |
422 | } | |
423 | } | |
424 | ||
128ea8ab | 425 | /* |
426 | * Map one RT to specified VNI. | |
14c1a7bf | 427 | */ |
d62a17ae | 428 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
429 | struct ecommunity_val *eval) | |
128ea8ab | 430 | { |
d62a17ae | 431 | struct irt_node *irt; |
432 | struct ecommunity_val eval_tmp; | |
128ea8ab | 433 | |
d62a17ae | 434 | /* If using "automatic" RT, we only care about the local-admin |
435 | * sub-field. | |
436 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
437 | */ | |
438 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
439 | if (!is_import_rt_configured(vpn)) | |
440 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 441 | |
d62a17ae | 442 | irt = lookup_import_rt(bgp, &eval_tmp); |
443 | if (irt && irt->vnis) | |
444 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
445 | /* Already mapped. */ | |
446 | return; | |
128ea8ab | 447 | |
d62a17ae | 448 | if (!irt) { |
449 | irt = import_rt_new(bgp, &eval_tmp); | |
450 | assert(irt); | |
451 | } | |
128ea8ab | 452 | |
d62a17ae | 453 | /* Add VNI to the hash list for this RT. */ |
454 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 455 | } |
456 | ||
457 | /* | |
458 | * Unmap specified VNI from specified RT. If there are no other | |
459 | * VNIs for this RT, then the RT hash is deleted. | |
460 | */ | |
d62a17ae | 461 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
462 | struct irt_node *irt) | |
14c1a7bf | 463 | { |
d62a17ae | 464 | /* Delete VNI from hash list for this RT. */ |
465 | listnode_delete(irt->vnis, vpn); | |
466 | if (!listnode_head(irt->vnis)) { | |
acdf5e25 | 467 | list_delete_and_null(&irt->vnis); |
d62a17ae | 468 | import_rt_free(bgp, irt); |
469 | } | |
14c1a7bf | 470 | } |
471 | ||
128ea8ab | 472 | /* |
473 | * Create RT extended community automatically from passed information: | |
474 | * of the form AS:VNI. | |
475 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
476 | * the need is to get a RT value that will be unique across different | |
477 | * VNIs but the same across routers (in the same AS) for a particular | |
478 | * VNI. | |
479 | */ | |
c581d8b0 | 480 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 481 | { |
d62a17ae | 482 | struct ecommunity_val eval; |
483 | struct ecommunity *ecomadd; | |
128ea8ab | 484 | |
c581d8b0 | 485 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 486 | |
d62a17ae | 487 | ecomadd = ecommunity_new(); |
488 | ecommunity_add_val(ecomadd, &eval); | |
489 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 490 | } |
14c1a7bf | 491 | |
492 | /* | |
128ea8ab | 493 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
494 | * creation of a VNI. | |
495 | */ | |
d62a17ae | 496 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 497 | { |
d62a17ae | 498 | bgp_evpn_derive_auto_rd(bgp, vpn); |
499 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
500 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 501 | } |
502 | ||
503 | /* | |
504 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 505 | */ |
d62a17ae | 506 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
507 | struct prefix_evpn *p, | |
508 | struct in_addr remote_vtep_ip, int add, | |
509 | u_char sticky) | |
510 | { | |
511 | struct stream *s; | |
512 | int ipa_len; | |
513 | char buf1[ETHER_ADDR_STRLEN]; | |
514 | char buf2[INET6_ADDRSTRLEN]; | |
515 | char buf3[INET6_ADDRSTRLEN]; | |
516 | ||
517 | /* Check socket. */ | |
518 | if (!zclient || zclient->sock < 0) | |
519 | return 0; | |
520 | ||
521 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
522 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
523 | return 0; | |
524 | ||
525 | s = zclient->obuf; | |
526 | stream_reset(s); | |
527 | ||
421bb26a MK |
528 | zclient_create_header(s, add ? ZEBRA_REMOTE_MACIP_ADD |
529 | : ZEBRA_REMOTE_MACIP_DEL, | |
530 | bgp->vrf_id); | |
d62a17ae | 531 | stream_putl(s, vpn->vni); |
28328ea9 | 532 | stream_put(s, &p->prefix.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 533 | /* IP address length and IP address, if any. */ |
534 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) | |
535 | stream_putl(s, 0); | |
536 | else { | |
537 | ipa_len = IS_EVPN_PREFIX_IPADDR_V4(p) ? IPV4_MAX_BYTELEN | |
538 | : IPV6_MAX_BYTELEN; | |
539 | stream_putl(s, ipa_len); | |
540 | stream_put(s, &p->prefix.ip.ip.addr, ipa_len); | |
541 | } | |
542 | stream_put_in_addr(s, &remote_vtep_ip); | |
543 | ||
544 | /* TX MAC sticky status */ | |
545 | if (add) | |
546 | stream_putc(s, sticky); | |
547 | ||
548 | stream_putw_at(s, 0, stream_get_endp(s)); | |
549 | ||
550 | if (bgp_debug_zebra(NULL)) | |
551 | zlog_debug("Tx %s MACIP, VNI %u %sMAC %s IP %s remote VTEP %s", | |
552 | add ? "ADD" : "DEL", vpn->vni, | |
553 | sticky ? "sticky " : "", | |
554 | prefix_mac2str(&p->prefix.mac, buf1, sizeof(buf1)), | |
555 | ipaddr2str(&p->prefix.ip, buf3, sizeof(buf3)), | |
556 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, | |
557 | sizeof(buf2))); | |
558 | ||
559 | return zclient_send_message(zclient); | |
7ef5a232 | 560 | } |
b18825eb | 561 | |
128ea8ab | 562 | /* |
563 | * Add (update) or delete remote VTEP from zebra. | |
564 | */ | |
d62a17ae | 565 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
566 | struct prefix_evpn *p, int add) | |
128ea8ab | 567 | { |
d62a17ae | 568 | struct stream *s; |
128ea8ab | 569 | |
d62a17ae | 570 | /* Check socket. */ |
571 | if (!zclient || zclient->sock < 0) | |
572 | return 0; | |
128ea8ab | 573 | |
d62a17ae | 574 | /* Don't try to register if Zebra doesn't know of this instance. */ |
575 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
576 | return 0; | |
128ea8ab | 577 | |
d62a17ae | 578 | s = zclient->obuf; |
579 | stream_reset(s); | |
128ea8ab | 580 | |
421bb26a MK |
581 | zclient_create_header(s, add ? ZEBRA_REMOTE_VTEP_ADD |
582 | : ZEBRA_REMOTE_VTEP_DEL, | |
583 | bgp->vrf_id); | |
d62a17ae | 584 | stream_putl(s, vpn->vni); |
585 | if (IS_EVPN_PREFIX_IPADDR_V4(p)) | |
586 | stream_put_in_addr(s, &p->prefix.ip.ipaddr_v4); | |
587 | else if (IS_EVPN_PREFIX_IPADDR_V6(p)) { | |
588 | zlog_err( | |
589 | "Bad remote IP when trying to %s remote VTEP for VNI %u", | |
590 | add ? "ADD" : "DEL", vpn->vni); | |
591 | return -1; | |
592 | } | |
128ea8ab | 593 | |
d62a17ae | 594 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 595 | |
d62a17ae | 596 | if (bgp_debug_zebra(NULL)) |
597 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
598 | add ? "ADD" : "DEL", vpn->vni, | |
599 | inet_ntoa(p->prefix.ip.ipaddr_v4)); | |
128ea8ab | 600 | |
d62a17ae | 601 | return zclient_send_message(zclient); |
128ea8ab | 602 | } |
603 | ||
342dd0c6 | 604 | /* |
605 | * Build extended communities for EVPN prefix route. | |
606 | */ | |
607 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
608 | struct attr *attr) | |
609 | { | |
610 | struct ecommunity ecom_encap; | |
611 | struct ecommunity ecom_rmac; | |
612 | struct ecommunity_val eval; | |
613 | struct ecommunity_val eval_rmac; | |
614 | bgp_encap_types tnl_type; | |
615 | struct listnode *node, *nnode; | |
616 | struct ecommunity *ecom; | |
617 | struct list *vrf_export_rtl = NULL; | |
618 | ||
619 | /* Encap */ | |
620 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
621 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
622 | encode_encap_extcomm(tnl_type, &eval); | |
623 | ecom_encap.size = 1; | |
624 | ecom_encap.val = (u_int8_t *)eval.val; | |
625 | ||
626 | /* Add Encap */ | |
627 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
628 | ||
629 | /* Add the export RTs for L3VNI/VRF */ | |
630 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
631 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
632 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) | |
633 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
634 | ecom); | |
635 | } | |
636 | ||
637 | /* add the router mac extended community */ | |
638 | if (!is_zero_mac(&attr->rmac)) { | |
639 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
640 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
641 | ecom_rmac.size = 1; | |
642 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
643 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
644 | &ecom_rmac); | |
645 | } | |
646 | ||
647 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
648 | } | |
649 | ||
128ea8ab | 650 | /* |
651 | * Build extended communities for EVPN route. RT and ENCAP are | |
652 | * applicable to all routes. | |
7ec156a9 MK |
653 | * TODO: currently kernel doesnt support ipv6 routes with ipv4 nexthops. |
654 | * This means that we can't do symmetric routing for ipv6 hosts routes | |
655 | * in the same way as ipv4 host routes. | |
656 | * We wont attach l3-vni related RTs for ipv6 routes. | |
657 | * For now, We will only adevrtise ipv4 host routes | |
658 | * with L3-VNI related ext-comm. | |
128ea8ab | 659 | */ |
7ec156a9 MK |
660 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
661 | afi_t afi) | |
128ea8ab | 662 | { |
d62a17ae | 663 | struct ecommunity ecom_encap; |
664 | struct ecommunity ecom_sticky; | |
bc59a672 | 665 | struct ecommunity ecom_rmac; |
d62a17ae | 666 | struct ecommunity_val eval; |
667 | struct ecommunity_val eval_sticky; | |
bc59a672 | 668 | struct ecommunity_val eval_rmac; |
d62a17ae | 669 | bgp_encap_types tnl_type; |
670 | struct listnode *node, *nnode; | |
671 | struct ecommunity *ecom; | |
672 | u_int32_t seqnum; | |
7a3e76f1 | 673 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 674 | |
d62a17ae | 675 | /* Encap */ |
676 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
677 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
678 | encode_encap_extcomm(tnl_type, &eval); | |
679 | ecom_encap.size = 1; | |
680 | ecom_encap.val = (u_int8_t *)eval.val; | |
128ea8ab | 681 | |
d62a17ae | 682 | /* Add Encap */ |
683 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 684 | |
7a3e76f1 | 685 | /* Add the export RTs for L2VNI */ |
d62a17ae | 686 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
687 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 688 | |
7ec156a9 MK |
689 | /* Add the export RTs for L3VNI - currently only supported for IPV4 host |
690 | * routes */ | |
691 | if (afi == AFI_IP) { | |
692 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); | |
693 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
694 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
695 | ecom)) | |
696 | attr->ecommunity = | |
697 | ecommunity_merge(attr->ecommunity, | |
698 | ecom); | |
699 | } | |
f1f8b53c | 700 | } |
7a3e76f1 | 701 | |
d62a17ae | 702 | if (attr->sticky) { |
703 | seqnum = 0; | |
704 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
705 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
706 | ecom_sticky.size = 1; | |
707 | ecom_sticky.val = (u_int8_t *)eval_sticky.val; | |
708 | attr->ecommunity = | |
709 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
710 | } | |
c85c03c7 | 711 | |
7ec156a9 | 712 | if (afi == AFI_IP && !is_zero_mac(&attr->rmac)) { |
bc59a672 MK |
713 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
714 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
715 | ecom_rmac.size = 1; | |
716 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
717 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
718 | &ecom_rmac); | |
719 | } | |
720 | ||
d62a17ae | 721 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 722 | } |
723 | ||
724 | /* | |
725 | * Add MAC mobility extended community to attribute. | |
726 | */ | |
d62a17ae | 727 | static void add_mac_mobility_to_attr(u_int32_t seq_num, struct attr *attr) |
728 | { | |
729 | struct ecommunity ecom_tmp; | |
730 | struct ecommunity_val eval; | |
421bb26a | 731 | u_int8_t *ecom_val_ptr; |
d62a17ae | 732 | int i; |
733 | u_int8_t *pnt; | |
734 | int type = 0; | |
735 | int sub_type = 0; | |
736 | ||
737 | /* Build MM */ | |
738 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
739 | ||
740 | /* Find current MM ecommunity */ | |
421bb26a | 741 | ecom_val_ptr = NULL; |
d62a17ae | 742 | |
743 | if (attr->ecommunity) { | |
744 | for (i = 0; i < attr->ecommunity->size; i++) { | |
745 | pnt = attr->ecommunity->val + (i * 8); | |
746 | type = *pnt++; | |
747 | sub_type = *pnt++; | |
748 | ||
749 | if (type == ECOMMUNITY_ENCODE_EVPN | |
750 | && sub_type | |
751 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
421bb26a MK |
752 | ecom_val_ptr = |
753 | (u_int8_t *)(attr->ecommunity->val | |
754 | + (i * 8)); | |
d62a17ae | 755 | break; |
756 | } | |
757 | } | |
758 | } | |
759 | ||
760 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
761 | if (ecom_val_ptr) { |
762 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 763 | } |
764 | /* Add MM to existing */ | |
765 | else { | |
766 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
767 | ecom_tmp.size = 1; | |
768 | ecom_tmp.val = (u_int8_t *)eval.val; | |
769 | ||
770 | attr->ecommunity = | |
771 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
772 | } | |
128ea8ab | 773 | } |
774 | ||
775 | /* Install EVPN route into zebra. */ | |
d62a17ae | 776 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
777 | struct prefix_evpn *p, | |
778 | struct in_addr remote_vtep_ip, u_char sticky) | |
128ea8ab | 779 | { |
d62a17ae | 780 | int ret; |
128ea8ab | 781 | |
d62a17ae | 782 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
783 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
784 | 1, sticky); | |
785 | else | |
786 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 787 | |
d62a17ae | 788 | return ret; |
128ea8ab | 789 | } |
790 | ||
791 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 792 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
793 | struct prefix_evpn *p, | |
794 | struct in_addr remote_vtep_ip) | |
128ea8ab | 795 | { |
d62a17ae | 796 | int ret; |
128ea8ab | 797 | |
d62a17ae | 798 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
799 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
800 | 0, 0); | |
801 | else | |
802 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 803 | |
d62a17ae | 804 | return ret; |
128ea8ab | 805 | } |
806 | ||
807 | /* | |
808 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
809 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
810 | * from peers. | |
811 | */ | |
d62a17ae | 812 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
813 | struct bgp_node *rn, | |
814 | struct bgp_info *old_local) | |
128ea8ab | 815 | { |
d62a17ae | 816 | struct bgp_node *global_rn; |
817 | struct bgp_info *ri; | |
818 | afi_t afi = AFI_L2VPN; | |
819 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 820 | |
d62a17ae | 821 | /* Locate route node in the global EVPN routing table. Note that |
822 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
823 | * L3VPN routes. | |
824 | */ | |
825 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
826 | (struct prefix *)&rn->p, &vpn->prd); | |
827 | if (global_rn) { | |
828 | /* Delete route entry in the global EVPN table. */ | |
829 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
128ea8ab | 830 | |
d62a17ae | 831 | /* Schedule for processing - withdraws to peers happen from |
832 | * this table. | |
833 | */ | |
834 | if (ri) | |
835 | bgp_process(bgp, global_rn, afi, safi); | |
836 | bgp_unlock_node(global_rn); | |
837 | } | |
128ea8ab | 838 | |
d62a17ae | 839 | /* Delete route entry in the VNI route table, caller to remove. */ |
840 | bgp_info_delete(rn, old_local); | |
128ea8ab | 841 | } |
842 | ||
843 | /* | |
844 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
845 | * if appropriate. | |
846 | */ | |
d62a17ae | 847 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
848 | struct bgp_node *rn) | |
849 | { | |
850 | struct bgp_info *old_select, *new_select; | |
851 | struct bgp_info_pair old_and_new; | |
852 | afi_t afi = AFI_L2VPN; | |
853 | safi_t safi = SAFI_EVPN; | |
854 | int ret = 0; | |
855 | ||
856 | /* Compute the best path. */ | |
857 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
858 | afi, safi); | |
859 | old_select = old_and_new.old; | |
860 | new_select = old_and_new.new; | |
861 | ||
862 | /* If the best path hasn't changed - see if there is still something to | |
863 | * update | |
864 | * to zebra RIB. | |
865 | */ | |
866 | if (old_select && old_select == new_select | |
867 | && old_select->type == ZEBRA_ROUTE_BGP | |
868 | && old_select->sub_type == BGP_ROUTE_NORMAL | |
869 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
870 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
871 | && !bgp->addpath_tx_used[afi][safi]) { | |
872 | if (bgp_zebra_has_route_changed(rn, old_select)) | |
873 | ret = evpn_zebra_install(bgp, vpn, | |
874 | (struct prefix_evpn *)&rn->p, | |
875 | old_select->attr->nexthop, | |
876 | old_select->attr->sticky); | |
877 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); | |
878 | bgp_zebra_clear_route_change_flags(rn); | |
879 | return ret; | |
880 | } | |
881 | ||
882 | /* If the user did a "clear" this flag will be set */ | |
883 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
884 | ||
885 | /* bestpath has changed; update relevant fields and install or uninstall | |
886 | * into the zebra RIB. | |
887 | */ | |
888 | if (old_select || new_select) | |
889 | bgp_bump_version(rn); | |
890 | ||
891 | if (old_select) | |
892 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
893 | if (new_select) { | |
894 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
895 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
896 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
897 | } | |
898 | ||
899 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
900 | && new_select->sub_type == BGP_ROUTE_NORMAL) { | |
901 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, | |
902 | new_select->attr->nexthop, | |
903 | new_select->attr->sticky); | |
904 | /* If an old best existed and it was a "local" route, the only | |
905 | * reason | |
906 | * it would be supplanted is due to MAC mobility procedures. So, | |
907 | * we | |
908 | * need to do an implicit delete and withdraw that route from | |
909 | * peers. | |
910 | */ | |
911 | if (old_select && old_select->peer == bgp->peer_self | |
912 | && old_select->type == ZEBRA_ROUTE_BGP | |
913 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
914 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
915 | } else { | |
916 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
917 | && old_select->sub_type == BGP_ROUTE_NORMAL) | |
918 | ret = evpn_zebra_uninstall(bgp, vpn, | |
919 | (struct prefix_evpn *)&rn->p, | |
920 | old_select->attr->nexthop); | |
921 | } | |
922 | ||
923 | /* Clear any route change flags. */ | |
924 | bgp_zebra_clear_route_change_flags(rn); | |
925 | ||
926 | /* Reap old select bgp_info, if it has been removed */ | |
927 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
928 | bgp_info_reap(rn, old_select); | |
929 | ||
930 | return ret; | |
128ea8ab | 931 | } |
932 | ||
c85c03c7 | 933 | |
934 | /* | |
935 | * Return true if the local ri for this rn has sticky set | |
936 | */ | |
d62a17ae | 937 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 938 | { |
d62a17ae | 939 | struct bgp_info *tmp_ri; |
940 | struct bgp_info *local_ri; | |
c85c03c7 | 941 | |
d62a17ae | 942 | local_ri = NULL; |
943 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
944 | if (tmp_ri->peer == bgp->peer_self | |
945 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
946 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
947 | local_ri = tmp_ri; | |
948 | } | |
c85c03c7 | 949 | |
d62a17ae | 950 | if (!local_ri) |
951 | return 0; | |
c85c03c7 | 952 | |
d62a17ae | 953 | return local_ri->attr->sticky; |
c85c03c7 | 954 | } |
955 | ||
342dd0c6 | 956 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
957 | struct bgp *bgp_vrf, afi_t afi, | |
958 | safi_t safi, struct bgp_node *rn, | |
959 | struct attr *attr) | |
960 | { | |
961 | struct attr *attr_new = NULL; | |
962 | struct bgp_info *ri = NULL; | |
963 | mpls_label_t label = MPLS_INVALID_LABEL; | |
964 | struct bgp_info *local_ri = NULL; | |
965 | struct bgp_info *tmp_ri = NULL; | |
966 | ||
967 | ||
968 | /* locate the local route entry if any */ | |
969 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
970 | if (tmp_ri->peer == bgp_def->peer_self | |
971 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
972 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
973 | local_ri = tmp_ri; | |
974 | } | |
975 | ||
976 | /* create a new route entry if one doesnt exist. | |
977 | Otherwise see if route attr has changed */ | |
978 | if (!local_ri) { | |
979 | ||
980 | /* Add (or update) attribute to hash. */ | |
981 | attr_new = bgp_attr_intern(attr); | |
982 | ||
983 | /* create the route info from attribute */ | |
984 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
985 | bgp_def->peer_self, attr_new, rn); | |
986 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
987 | ||
988 | /* L3-VNI goes in the label2 field */ | |
989 | bgp_info_extra_get(ri); | |
990 | vni2label(bgp_vrf->l3vni, &label); | |
991 | memcpy(&ri->extra->label2, &label, BGP_LABEL_BYTES); | |
992 | ||
993 | /* add the route entry to route node*/ | |
994 | bgp_info_add(rn, ri); | |
995 | } else { | |
996 | ||
997 | tmp_ri = local_ri; | |
998 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
999 | /* The attribute has changed. */ | |
1000 | /* Add (or update) attribute to hash. */ | |
1001 | attr_new = bgp_attr_intern(attr); | |
1002 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1003 | ||
1004 | /* Restore route, if needed. */ | |
1005 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1006 | bgp_info_restore(rn, tmp_ri); | |
1007 | ||
1008 | /* Unintern existing, set to new. */ | |
1009 | bgp_attr_unintern(&tmp_ri->attr); | |
1010 | tmp_ri->attr = attr_new; | |
1011 | tmp_ri->uptime = bgp_clock(); | |
1012 | } | |
1013 | } | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | /* update evpn type-5 route entry */ | |
1018 | static int update_evpn_type5_route(struct bgp *bgp_vrf, | |
1019 | struct prefix_evpn *evp) | |
1020 | { | |
1021 | afi_t afi = AFI_L2VPN; | |
1022 | safi_t safi = SAFI_EVPN; | |
1023 | struct attr attr; | |
1024 | struct bgp_node *rn = NULL; | |
1025 | struct bgp *bgp_def = NULL; | |
1026 | ||
1027 | bgp_def = bgp_get_default(); | |
1028 | if (!bgp_def) | |
1029 | return -1; | |
1030 | ||
1031 | /* build path attribute for this route */ | |
1032 | memset(&attr, 0, sizeof(struct attr)); | |
1033 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1034 | attr.nexthop = bgp_vrf->originator_ip; | |
1035 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1036 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1037 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1038 | ||
1039 | /* Setup RT and encap extended community */ | |
1040 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1041 | ||
1042 | /* get the route node in global table */ | |
1043 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
1044 | (struct prefix *)evp, | |
1045 | &bgp_vrf->vrf_prd); | |
1046 | assert(rn); | |
1047 | ||
1048 | /* create or update the route entry within the route node */ | |
1049 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, | |
1050 | afi, safi, | |
1051 | rn, &attr); | |
1052 | ||
1053 | /* schedule for processing and unlock node */ | |
1054 | bgp_process(bgp_def, rn, afi, safi); | |
1055 | bgp_unlock_node(rn); | |
1056 | ||
1057 | /* uninten temporary */ | |
1058 | aspath_unintern(&attr.aspath); | |
1059 | return 0; | |
1060 | } | |
1061 | ||
128ea8ab | 1062 | /* |
1063 | * Create or update EVPN route entry. This could be in the VNI route table | |
1064 | * or the global route table. | |
1065 | */ | |
d62a17ae | 1066 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1067 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1068 | struct attr *attr, int add, int vni_table, | |
1a98c087 | 1069 | struct bgp_info **ri, u_char flags) |
d62a17ae | 1070 | { |
1071 | struct bgp_info *tmp_ri; | |
1072 | struct bgp_info *local_ri, *remote_ri; | |
1073 | struct attr *attr_new; | |
1074 | mpls_label_t label = MPLS_INVALID_LABEL; | |
1075 | int route_change = 1; | |
1076 | u_char sticky = 0; | |
1077 | ||
1078 | *ri = NULL; | |
1079 | ||
1080 | /* See if this is an update of an existing route, or a new add. Also, | |
1081 | * identify if already known from remote, and if so, the one with the | |
1082 | * highest sequence number; this is only when adding to the VNI routing | |
1083 | * table. | |
1084 | */ | |
1085 | local_ri = remote_ri = NULL; | |
1086 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1087 | if (tmp_ri->peer == bgp->peer_self | |
1088 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1089 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1090 | local_ri = tmp_ri; | |
1091 | if (vni_table) { | |
1092 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
1093 | && tmp_ri->sub_type == BGP_ROUTE_NORMAL | |
1094 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { | |
1095 | if (!remote_ri) | |
1096 | remote_ri = tmp_ri; | |
1097 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1098 | > mac_mobility_seqnum(remote_ri->attr)) | |
1099 | remote_ri = tmp_ri; | |
1100 | } | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | /* If route doesn't exist already, create a new one, if told to. | |
1105 | * Otherwise act based on whether the attributes of the route have | |
1106 | * changed or not. | |
1107 | */ | |
1108 | if (!local_ri && !add) | |
1109 | return 0; | |
1110 | ||
1111 | if (!local_ri) { | |
1112 | /* When learnt locally for the first time but already known from | |
1113 | * remote, we have to initiate appropriate MAC mobility steps. | |
1114 | * This | |
1115 | * is applicable when updating the VNI routing table. | |
1a98c087 MK |
1116 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1117 | * SVI) advertised in EVPN. | |
1118 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1119 | */ |
1a98c087 | 1120 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MAC_TYPE_GW)) { |
d62a17ae | 1121 | u_int32_t cur_seqnum; |
1122 | ||
1123 | /* Add MM extended community to route. */ | |
1124 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1125 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1126 | } | |
1127 | ||
1128 | /* Add (or update) attribute to hash. */ | |
1129 | attr_new = bgp_attr_intern(attr); | |
1130 | ||
1131 | /* Extract MAC mobility sequence number, if any. */ | |
1132 | attr_new->mm_seqnum = | |
1133 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1134 | attr_new->sticky = sticky; | |
1135 | ||
1136 | /* Create new route with its attribute. */ | |
1137 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1138 | bgp->peer_self, attr_new, rn); | |
1139 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1140 | bgp_info_extra_get(tmp_ri); | |
1141 | ||
1142 | /* The VNI goes into the 'label' field of the route */ | |
1143 | vni2label(vpn->vni, &label); | |
1144 | ||
1145 | memcpy(&tmp_ri->extra->label, &label, BGP_LABEL_BYTES); | |
1146 | bgp_info_add(rn, tmp_ri); | |
1147 | } else { | |
1148 | tmp_ri = local_ri; | |
1149 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1150 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1151 | route_change = 0; | |
1152 | else { | |
1153 | /* The attribute has changed. */ | |
1154 | /* Add (or update) attribute to hash. */ | |
1155 | attr_new = bgp_attr_intern(attr); | |
1156 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1157 | ||
1158 | /* Restore route, if needed. */ | |
1159 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1160 | bgp_info_restore(rn, tmp_ri); | |
1161 | ||
1162 | /* Unintern existing, set to new. */ | |
1163 | bgp_attr_unintern(&tmp_ri->attr); | |
1164 | tmp_ri->attr = attr_new; | |
1165 | tmp_ri->uptime = bgp_clock(); | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /* Return back the route entry. */ | |
1170 | *ri = tmp_ri; | |
1171 | return route_change; | |
128ea8ab | 1172 | } |
1173 | ||
1174 | /* | |
1175 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1176 | * and schedule for processing. | |
1177 | */ | |
d62a17ae | 1178 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1a98c087 | 1179 | struct prefix_evpn *p, u_char flags) |
128ea8ab | 1180 | { |
d62a17ae | 1181 | struct bgp_node *rn; |
1182 | struct attr attr; | |
1183 | struct attr *attr_new; | |
1184 | struct bgp_info *ri; | |
1185 | afi_t afi = AFI_L2VPN; | |
1186 | safi_t safi = SAFI_EVPN; | |
1187 | int route_change; | |
128ea8ab | 1188 | |
d62a17ae | 1189 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1190 | |
d62a17ae | 1191 | /* Build path-attribute for this route. */ |
1192 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1193 | attr.nexthop = vpn->originator_ip; | |
1194 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1195 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1a98c087 | 1196 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MAC_TYPE_STICKY) ? 1 : 0; |
bc59a672 | 1197 | bgpevpn_get_rmac(vpn, &attr.rmac); |
128ea8ab | 1198 | |
d62a17ae | 1199 | /* Set up RT and ENCAP extended community. */ |
7ec156a9 MK |
1200 | build_evpn_route_extcomm(vpn, &attr, |
1201 | IS_EVPN_PREFIX_IPADDR_V4(p) ? | |
1202 | AFI_IP : AFI_IP6); | |
128ea8ab | 1203 | |
d62a17ae | 1204 | /* First, create (or fetch) route node within the VNI. */ |
1205 | /* NOTE: There is no RD here. */ | |
1206 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1207 | |
d62a17ae | 1208 | /* Create or update route entry. */ |
1209 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1210 | 1, 1, &ri, flags); |
d62a17ae | 1211 | assert(ri); |
1212 | attr_new = ri->attr; | |
128ea8ab | 1213 | |
d62a17ae | 1214 | /* Perform route selection; this is just to set the flags correctly |
1215 | * as local route in the VNI always wins. | |
1216 | */ | |
1217 | evpn_route_select_install(bgp, vpn, rn); | |
1218 | bgp_unlock_node(rn); | |
128ea8ab | 1219 | |
d62a17ae | 1220 | /* If this is a new route or some attribute has changed, export the |
1221 | * route to the global table. The route will be advertised to peers | |
1222 | * from there. Note that this table is a 2-level tree (RD-level + | |
1223 | * Prefix-level) similar to L3VPN routes. | |
1224 | */ | |
1225 | if (route_change) { | |
1226 | struct bgp_info *global_ri; | |
128ea8ab | 1227 | |
d62a17ae | 1228 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1229 | (struct prefix *)p, &vpn->prd); | |
1230 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1231 | &global_ri, flags); |
128ea8ab | 1232 | |
d62a17ae | 1233 | /* Schedule for processing and unlock node. */ |
1234 | bgp_process(bgp, rn, afi, safi); | |
1235 | bgp_unlock_node(rn); | |
1236 | } | |
128ea8ab | 1237 | |
d62a17ae | 1238 | /* Unintern temporary. */ |
1239 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1240 | |
d62a17ae | 1241 | return 0; |
128ea8ab | 1242 | } |
1243 | ||
342dd0c6 | 1244 | /* Delete EVPN type5 route entry from global table */ |
1245 | static void delete_evpn_type5_route_entry(struct bgp *bgp_def, | |
1246 | struct bgp *bgp_vrf, | |
1247 | afi_t afi, safi_t safi, | |
1248 | struct bgp_node *rn, | |
1249 | struct bgp_info **ri) | |
1250 | { | |
1251 | struct bgp_info *tmp_ri = NULL; | |
1252 | ||
1253 | *ri = NULL; | |
1254 | ||
1255 | /* find the matching route entry */ | |
1256 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1257 | if (tmp_ri->peer == bgp_def->peer_self | |
1258 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1259 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1260 | break; | |
1261 | ||
1262 | *ri = tmp_ri; | |
1263 | ||
1264 | /* Mark route for delete. */ | |
1265 | if (tmp_ri) | |
1266 | bgp_info_delete(rn, tmp_ri); | |
1267 | } | |
1268 | ||
1269 | /* Delete EVPN type5 route */ | |
1270 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, | |
1271 | struct prefix_evpn *evp) | |
1272 | { | |
1273 | afi_t afi = AFI_L2VPN; | |
1274 | safi_t safi = SAFI_EVPN; | |
1275 | struct bgp_node *rn = NULL; | |
1276 | struct bgp_info *ri = NULL; | |
1277 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1278 | ||
1279 | bgp_def = bgp_get_default(); | |
1280 | if (!bgp_def) | |
1281 | return -1; | |
1282 | ||
1283 | /* locate the global route entry for this type-5 prefix */ | |
1284 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1285 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1286 | if (!rn) | |
1287 | return 0; | |
1288 | ||
1289 | delete_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &ri); | |
1290 | if (ri) | |
1291 | bgp_process(bgp_def, rn, afi, safi); | |
1292 | bgp_unlock_node(rn); | |
1293 | return 0; | |
1294 | } | |
1295 | ||
128ea8ab | 1296 | /* |
1297 | * Delete EVPN route entry. This could be in the VNI route table | |
1298 | * or the global route table. | |
1299 | */ | |
d62a17ae | 1300 | static void delete_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1301 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1302 | struct bgp_info **ri) | |
128ea8ab | 1303 | { |
d62a17ae | 1304 | struct bgp_info *tmp_ri; |
128ea8ab | 1305 | |
d62a17ae | 1306 | *ri = NULL; |
128ea8ab | 1307 | |
d62a17ae | 1308 | /* Now, find matching route. */ |
1309 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1310 | if (tmp_ri->peer == bgp->peer_self | |
1311 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1312 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1313 | break; | |
128ea8ab | 1314 | |
d62a17ae | 1315 | *ri = tmp_ri; |
128ea8ab | 1316 | |
d62a17ae | 1317 | /* Mark route for delete. */ |
1318 | if (tmp_ri) | |
1319 | bgp_info_delete(rn, tmp_ri); | |
128ea8ab | 1320 | } |
1321 | ||
1322 | /* | |
1323 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1324 | * schedule for processing. | |
1325 | */ | |
d62a17ae | 1326 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1327 | struct prefix_evpn *p) | |
1328 | { | |
1329 | struct bgp_node *rn, *global_rn; | |
1330 | struct bgp_info *ri; | |
1331 | afi_t afi = AFI_L2VPN; | |
1332 | safi_t safi = SAFI_EVPN; | |
1333 | ||
1334 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1335 | * there | |
1336 | * is nothing further to do. | |
1337 | */ | |
1338 | /* NOTE: There is no RD here. */ | |
1339 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1340 | if (!rn) | |
1341 | return 0; | |
1342 | ||
1343 | /* Next, locate route node in the global EVPN routing table. Note that | |
1344 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1345 | * L3VPN routes. | |
1346 | */ | |
1347 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1348 | (struct prefix *)p, &vpn->prd); | |
1349 | if (global_rn) { | |
1350 | /* Delete route entry in the global EVPN table. */ | |
1351 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
1352 | ||
1353 | /* Schedule for processing - withdraws to peers happen from | |
1354 | * this table. | |
1355 | */ | |
1356 | if (ri) | |
1357 | bgp_process(bgp, global_rn, afi, safi); | |
1358 | bgp_unlock_node(global_rn); | |
1359 | } | |
1360 | ||
1361 | /* Delete route entry in the VNI route table. This can just be removed. | |
1362 | */ | |
1363 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); | |
1364 | if (ri) | |
1365 | bgp_info_reap(rn, ri); | |
1366 | bgp_unlock_node(rn); | |
1367 | ||
1368 | return 0; | |
128ea8ab | 1369 | } |
1370 | ||
1371 | /* | |
1372 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1373 | * be scheduled for advertise to peers. | |
1374 | */ | |
d62a17ae | 1375 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1376 | { | |
1377 | afi_t afi; | |
1378 | safi_t safi; | |
1379 | struct bgp_node *rn; | |
1380 | struct bgp_info *ri; | |
1381 | struct attr attr; | |
1382 | struct attr attr_sticky; | |
7ec156a9 MK |
1383 | struct attr attr_ip6; |
1384 | struct attr attr_sticky_ip6; | |
d62a17ae | 1385 | struct attr *attr_new; |
1386 | ||
1387 | afi = AFI_L2VPN; | |
1388 | safi = SAFI_EVPN; | |
1389 | memset(&attr, 0, sizeof(struct attr)); | |
1390 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
7ec156a9 MK |
1391 | memset(&attr_ip6, 0, sizeof(struct attr)); |
1392 | memset(&attr_sticky_ip6, 0, sizeof(struct attr)); | |
d62a17ae | 1393 | |
1394 | /* Build path-attribute - all type-2 routes for this VNI will share the | |
1395 | * same path attribute. | |
1396 | */ | |
1397 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1398 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
1399 | attr.nexthop = vpn->originator_ip; | |
1400 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1401 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1402 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1403 | attr_sticky.nexthop = vpn->originator_ip; |
1404 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1405 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1406 | attr_sticky.sticky = 1; | |
bc59a672 | 1407 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
7ec156a9 MK |
1408 | bgp_attr_default_set(&attr_ip6, BGP_ORIGIN_IGP); |
1409 | bgp_attr_default_set(&attr_sticky_ip6, BGP_ORIGIN_IGP); | |
1410 | attr_ip6.nexthop = vpn->originator_ip; | |
1411 | attr_ip6.mp_nexthop_global_in = vpn->originator_ip; | |
1412 | attr_ip6.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1413 | bgpevpn_get_rmac(vpn, &attr_ip6.rmac); | |
1414 | attr_sticky_ip6.nexthop = vpn->originator_ip; | |
1415 | attr_sticky_ip6.mp_nexthop_global_in = vpn->originator_ip; | |
1416 | attr_sticky_ip6.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1417 | attr_sticky_ip6.sticky = 1; | |
1418 | bgpevpn_get_rmac(vpn, &attr_sticky_ip6.rmac); | |
d62a17ae | 1419 | |
1420 | /* Set up RT, ENCAP and sticky MAC extended community. */ | |
7ec156a9 MK |
1421 | build_evpn_route_extcomm(vpn, &attr, AFI_IP); |
1422 | build_evpn_route_extcomm(vpn, &attr_sticky, AFI_IP); | |
1423 | build_evpn_route_extcomm(vpn, &attr_ip6, AFI_IP6); | |
1424 | build_evpn_route_extcomm(vpn, &attr_sticky_ip6, AFI_IP6); | |
d62a17ae | 1425 | |
1426 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1427 | * routes updated, update corresponding entry in the global table too. | |
1428 | */ | |
1429 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1430 | rn = bgp_route_next(rn)) { | |
1431 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1432 | struct bgp_node *rd_rn; | |
1433 | struct bgp_info *global_ri; | |
1434 | ||
1435 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1436 | continue; | |
1437 | ||
7ec156a9 MK |
1438 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) { |
1439 | if (evpn_route_is_sticky(bgp, rn)) | |
1440 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1441 | &attr_sticky, 0, 1, | |
1442 | &ri, 0); | |
1443 | else | |
1444 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1445 | &attr, 0, 1, &ri, 0); | |
1446 | } else { | |
1447 | if (evpn_route_is_sticky(bgp, rn)) | |
1448 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1449 | &attr_sticky_ip6, 0, 1, | |
1450 | &ri, 0); | |
1451 | else | |
1452 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1453 | &attr_ip6, 0, 1, | |
1454 | &ri, 0); | |
1455 | } | |
d62a17ae | 1456 | |
1457 | /* If a local route exists for this prefix, we need to update | |
1458 | * the global routing table too. | |
1459 | */ | |
1460 | if (!ri) | |
1461 | continue; | |
1462 | ||
1463 | /* Perform route selection; this is just to set the flags | |
1464 | * correctly | |
1465 | * as local route in the VNI always wins. | |
1466 | */ | |
1467 | evpn_route_select_install(bgp, vpn, rn); | |
1468 | ||
1469 | attr_new = ri->attr; | |
1470 | ||
1471 | /* Update route in global routing table. */ | |
1472 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1473 | (struct prefix *)evp, &vpn->prd); | |
1474 | assert(rd_rn); | |
1475 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
1a98c087 | 1476 | 0, &global_ri, 0); |
d62a17ae | 1477 | |
1478 | /* Schedule for processing and unlock node. */ | |
1479 | bgp_process(bgp, rd_rn, afi, safi); | |
1480 | bgp_unlock_node(rd_rn); | |
1481 | } | |
1482 | ||
1483 | /* Unintern temporary. */ | |
1484 | aspath_unintern(&attr.aspath); | |
1485 | aspath_unintern(&attr_sticky.aspath); | |
1486 | ||
1487 | return 0; | |
128ea8ab | 1488 | } |
1489 | ||
1490 | /* | |
1491 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
1492 | * global routing table. These are also scheduled for withdraw from peers. | |
1493 | */ | |
d62a17ae | 1494 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1495 | { |
d62a17ae | 1496 | afi_t afi; |
1497 | safi_t safi; | |
1498 | struct bgp_node *rdrn, *rn; | |
1499 | struct bgp_table *table; | |
1500 | struct bgp_info *ri; | |
128ea8ab | 1501 | |
d62a17ae | 1502 | afi = AFI_L2VPN; |
1503 | safi = SAFI_EVPN; | |
128ea8ab | 1504 | |
d62a17ae | 1505 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
1506 | if (rdrn && rdrn->info) { | |
1507 | table = (struct bgp_table *)rdrn->info; | |
1508 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
1509 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1510 | |
d62a17ae | 1511 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1512 | continue; | |
128ea8ab | 1513 | |
d62a17ae | 1514 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
1515 | if (ri) | |
1516 | bgp_process(bgp, rn, afi, safi); | |
1517 | } | |
1518 | } | |
128ea8ab | 1519 | |
d62a17ae | 1520 | /* Unlock RD node. */ |
1521 | if (rdrn) | |
1522 | bgp_unlock_node(rdrn); | |
128ea8ab | 1523 | |
d62a17ae | 1524 | return 0; |
128ea8ab | 1525 | } |
1526 | ||
1527 | /* | |
1528 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
1529 | * table as well as the per-VNI route table. | |
1530 | */ | |
d62a17ae | 1531 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1532 | { |
d62a17ae | 1533 | afi_t afi; |
1534 | safi_t safi; | |
1535 | struct bgp_node *rn; | |
1536 | struct bgp_info *ri; | |
128ea8ab | 1537 | |
d62a17ae | 1538 | afi = AFI_L2VPN; |
1539 | safi = SAFI_EVPN; | |
128ea8ab | 1540 | |
d62a17ae | 1541 | /* First, walk the global route table for this VNI's type-2 local |
1542 | * routes. | |
1543 | * EVPN routes are a 2-level table, first get the RD table. | |
1544 | */ | |
1545 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 1546 | |
d62a17ae | 1547 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
1548 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1549 | rn = bgp_route_next(rn)) { | |
1550 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1551 | |
d62a17ae | 1552 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1553 | continue; | |
128ea8ab | 1554 | |
d62a17ae | 1555 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
128ea8ab | 1556 | |
d62a17ae | 1557 | /* Route entry in local table gets deleted immediately. */ |
1558 | if (ri) | |
1559 | bgp_info_reap(rn, ri); | |
1560 | } | |
128ea8ab | 1561 | |
d62a17ae | 1562 | return 0; |
128ea8ab | 1563 | } |
1564 | ||
1565 | /* | |
1566 | * Delete all routes in the per-VNI route table. | |
1567 | */ | |
d62a17ae | 1568 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1569 | { |
d62a17ae | 1570 | struct bgp_node *rn; |
1571 | struct bgp_info *ri, *nextri; | |
128ea8ab | 1572 | |
d62a17ae | 1573 | /* Walk this VNI's route table and delete all routes. */ |
1574 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1575 | rn = bgp_route_next(rn)) { | |
1576 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
1577 | ri = nextri) { | |
1578 | bgp_info_delete(rn, ri); | |
1579 | bgp_info_reap(rn, ri); | |
1580 | } | |
1581 | } | |
128ea8ab | 1582 | |
d62a17ae | 1583 | return 0; |
128ea8ab | 1584 | } |
1585 | ||
1586 | /* | |
1587 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
1588 | * export RT getting modified or change to tunnel IP. Note that these | |
1589 | * situations need the route in the per-VNI table as well as the global | |
1590 | * table to be updated (as attributes change). | |
1591 | */ | |
d62a17ae | 1592 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1593 | { |
d62a17ae | 1594 | int ret; |
1595 | struct prefix_evpn p; | |
128ea8ab | 1596 | |
d62a17ae | 1597 | /* Update and advertise the type-3 route (only one) followed by the |
1598 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
1599 | */ | |
1600 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1601 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
1602 | if (ret) | |
1603 | return ret; | |
128ea8ab | 1604 | |
d62a17ae | 1605 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 1606 | } |
1607 | ||
1608 | /* | |
1609 | * Delete (and withdraw) local routes for specified VNI from the global | |
1610 | * table and per-VNI table. After this, remove all other routes from | |
1611 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
1612 | * (advertise-all-vni) being disabled. | |
1613 | */ | |
d62a17ae | 1614 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1615 | { |
d62a17ae | 1616 | int ret; |
1617 | struct prefix_evpn p; | |
128ea8ab | 1618 | |
d62a17ae | 1619 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
1620 | * followed by type-3 routes (only one) - for this VNI. | |
1621 | */ | |
1622 | ret = delete_all_type2_routes(bgp, vpn); | |
1623 | if (ret) | |
1624 | return ret; | |
128ea8ab | 1625 | |
d62a17ae | 1626 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
1627 | ret = delete_evpn_route(bgp, vpn, &p); | |
1628 | if (ret) | |
1629 | return ret; | |
128ea8ab | 1630 | |
d62a17ae | 1631 | /* Delete all routes from the per-VNI table. */ |
1632 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 1633 | } |
1634 | ||
1635 | /* | |
1636 | * There is a tunnel endpoint IP address change for this VNI, | |
1637 | * need to re-advertise routes with the new nexthop. | |
1638 | */ | |
d62a17ae | 1639 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
1640 | struct in_addr originator_ip) | |
128ea8ab | 1641 | { |
d62a17ae | 1642 | struct prefix_evpn p; |
128ea8ab | 1643 | |
ddd16ed5 MK |
1644 | /* If VNI is not live, we only need to update the originator ip */ |
1645 | if (!is_vni_live(vpn)) { | |
1646 | vpn->originator_ip = originator_ip; | |
1647 | return 0; | |
1648 | } | |
1649 | ||
db0e1937 MK |
1650 | /* Update the tunnel-ip hash */ |
1651 | bgp_tip_del(bgp, &vpn->originator_ip); | |
1652 | bgp_tip_add(bgp, &originator_ip); | |
1653 | ||
1654 | /* filter routes as martian nexthop db has changed */ | |
1655 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
1656 | ||
d62a17ae | 1657 | /* Need to withdraw type-3 route as the originator IP is part |
1658 | * of the key. | |
1659 | */ | |
1660 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1661 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 1662 | |
d62a17ae | 1663 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
1664 | vpn->originator_ip = originator_ip; | |
1665 | return update_routes_for_vni(bgp, vpn); | |
128ea8ab | 1666 | } |
1667 | ||
d3135ba3 | 1668 | /* |
1669 | * Install route entry into the VRF routing table and invoke route selection. | |
1670 | */ | |
1671 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1672 | struct prefix_evpn *evp, | |
1673 | struct bgp_info *parent_ri) | |
1674 | { | |
1675 | struct bgp_node *rn; | |
1676 | struct bgp_info *ri; | |
1677 | struct attr *attr_new; | |
c4edf708 | 1678 | int ret = 0; |
d3135ba3 | 1679 | struct prefix p; |
1680 | struct prefix *pp = &p; | |
1681 | afi_t afi = 0; | |
1682 | safi_t safi = 0; | |
1eb88002 MK |
1683 | char buf[PREFIX_STRLEN]; |
1684 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1685 | |
1686 | memset(pp, 0, sizeof(struct prefix)); | |
1687 | ip_prefix_from_type2_prefix(evp, pp); | |
1688 | ||
1eb88002 MK |
1689 | if (bgp_debug_zebra(NULL)) { |
1690 | zlog_debug("installing evpn prefix %s as ip prefix %s in vrf %s", | |
1691 | prefix2str(evp, buf, sizeof(buf)), | |
1692 | prefix2str(pp, buf1, sizeof(buf)), | |
1693 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1694 | } | |
1695 | ||
d3135ba3 | 1696 | /* Create (or fetch) route within the VRF. */ |
1697 | /* NOTE: There is no RD here. */ | |
1698 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) { | |
1699 | afi = AFI_IP; | |
1700 | safi = SAFI_UNICAST; | |
1701 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
1702 | } else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) { | |
1703 | afi = AFI_IP6; | |
1704 | safi = SAFI_UNICAST; | |
1705 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
1706 | } else | |
1707 | return 0; | |
1708 | ||
1709 | /* Check if route entry is already present. */ | |
1710 | for (ri = rn->info; ri; ri = ri->next) | |
1711 | if (ri->extra | |
1712 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1713 | break; | |
1714 | ||
1715 | if (!ri) { | |
1716 | /* Add (or update) attribute to hash. */ | |
1717 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1718 | ||
1719 | /* Create new route with its attribute. */ | |
1720 | ri = info_make(parent_ri->type, parent_ri->sub_type, 0, | |
1721 | parent_ri->peer, attr_new, rn); | |
1722 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1723 | bgp_info_extra_get(ri); | |
1724 | ri->extra->parent = parent_ri; | |
1725 | if (parent_ri->extra) | |
1726 | memcpy(&ri->extra->label, &parent_ri->extra->label, | |
1727 | BGP_LABEL_BYTES); | |
1728 | bgp_info_add(rn, ri); | |
1729 | } else { | |
1730 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1731 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
1732 | bgp_unlock_node(rn); | |
1733 | return 0; | |
1734 | } | |
1735 | /* The attribute has changed. */ | |
1736 | /* Add (or update) attribute to hash. */ | |
1737 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1738 | ||
1739 | /* Restore route, if needed. */ | |
1740 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1741 | bgp_info_restore(rn, ri); | |
1742 | ||
1743 | /* Mark if nexthop has changed. */ | |
1744 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1745 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
1746 | ||
1747 | /* Unintern existing, set to new. */ | |
1748 | bgp_attr_unintern(&ri->attr); | |
1749 | ri->attr = attr_new; | |
1750 | ri->uptime = bgp_clock(); | |
1751 | } | |
1752 | ||
1753 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 1754 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 1755 | |
1756 | return ret; | |
1757 | } | |
1758 | ||
128ea8ab | 1759 | /* |
1760 | * Install route entry into the VNI routing table and invoke route selection. | |
1761 | */ | |
d62a17ae | 1762 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1763 | struct prefix_evpn *p, | |
1764 | struct bgp_info *parent_ri) | |
1765 | { | |
1766 | struct bgp_node *rn; | |
1767 | struct bgp_info *ri; | |
1768 | struct attr *attr_new; | |
1769 | int ret; | |
1770 | ||
1771 | /* Create (or fetch) route within the VNI. */ | |
1772 | /* NOTE: There is no RD here. */ | |
1773 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
1774 | ||
1775 | /* Check if route entry is already present. */ | |
1776 | for (ri = rn->info; ri; ri = ri->next) | |
1777 | if (ri->extra | |
1778 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1779 | break; | |
1780 | ||
1781 | if (!ri) { | |
1782 | /* Add (or update) attribute to hash. */ | |
1783 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1784 | ||
1785 | /* Create new route with its attribute. */ | |
1786 | ri = info_make(parent_ri->type, parent_ri->sub_type, 0, | |
1787 | parent_ri->peer, attr_new, rn); | |
1788 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1789 | bgp_info_extra_get(ri); | |
1790 | ri->extra->parent = parent_ri; | |
1791 | if (parent_ri->extra) | |
1792 | memcpy(&ri->extra->label, &parent_ri->extra->label, | |
1793 | BGP_LABEL_BYTES); | |
1794 | bgp_info_add(rn, ri); | |
1795 | } else { | |
1796 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1797 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
1798 | bgp_unlock_node(rn); | |
1799 | return 0; | |
1800 | } | |
1801 | /* The attribute has changed. */ | |
1802 | /* Add (or update) attribute to hash. */ | |
1803 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1804 | ||
1805 | /* Restore route, if needed. */ | |
1806 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1807 | bgp_info_restore(rn, ri); | |
1808 | ||
1809 | /* Mark if nexthop has changed. */ | |
1810 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1811 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
1812 | ||
1813 | /* Unintern existing, set to new. */ | |
1814 | bgp_attr_unintern(&ri->attr); | |
1815 | ri->attr = attr_new; | |
1816 | ri->uptime = bgp_clock(); | |
1817 | } | |
1818 | ||
1819 | /* Perform route selection and update zebra, if required. */ | |
1820 | ret = evpn_route_select_install(bgp, vpn, rn); | |
1821 | ||
1822 | return ret; | |
128ea8ab | 1823 | } |
1824 | ||
d3135ba3 | 1825 | /* |
1826 | * Uninstall route entry from the VRF routing table and send message | |
1827 | * to zebra, if appropriate. | |
1828 | */ | |
1829 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1830 | struct prefix_evpn *evp, | |
1831 | struct bgp_info *parent_ri) | |
1832 | { | |
1833 | struct bgp_node *rn; | |
1834 | struct bgp_info *ri; | |
c4edf708 | 1835 | int ret = 0; |
d3135ba3 | 1836 | struct prefix p; |
1837 | struct prefix *pp = &p; | |
1838 | afi_t afi = 0; | |
1839 | safi_t safi = 0; | |
1eb88002 MK |
1840 | char buf[PREFIX_STRLEN]; |
1841 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1842 | |
1843 | memset(pp, 0, sizeof(struct prefix)); | |
1844 | ip_prefix_from_type2_prefix(evp, pp); | |
1845 | ||
1eb88002 | 1846 | if (bgp_debug_zebra(NULL)) { |
30a30f57 | 1847 | zlog_debug("uninstalling evpn prefix %s as ip prefix %s in vrf %s", |
1eb88002 MK |
1848 | prefix2str(evp, buf, sizeof(buf)), |
1849 | prefix2str(pp, buf1, sizeof(buf)), | |
1850 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1851 | } | |
1852 | ||
d3135ba3 | 1853 | /* Locate route within the VRF. */ |
1854 | /* NOTE: There is no RD here. */ | |
1855 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) { | |
1856 | afi = AFI_IP; | |
1857 | safi = SAFI_UNICAST; | |
1858 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1859 | } else { | |
1860 | afi = AFI_IP6; | |
1861 | safi = SAFI_UNICAST; | |
1862 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1863 | } | |
1864 | ||
1865 | if (!rn) | |
1866 | return 0; | |
1867 | ||
1868 | /* Find matching route entry. */ | |
1869 | for (ri = rn->info; ri; ri = ri->next) | |
1870 | if (ri->extra | |
1871 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1872 | break; | |
1873 | ||
1874 | if (!ri) | |
1875 | return 0; | |
1876 | ||
1877 | /* Mark entry for deletion */ | |
1878 | bgp_info_delete(rn, ri); | |
1879 | ||
1880 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 1881 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 1882 | |
1883 | /* Unlock route node. */ | |
1884 | bgp_unlock_node(rn); | |
1885 | ||
1886 | return ret; | |
1887 | } | |
1888 | ||
128ea8ab | 1889 | /* |
1890 | * Uninstall route entry from the VNI routing table and send message | |
1891 | * to zebra, if appropriate. | |
1892 | */ | |
d62a17ae | 1893 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1894 | struct prefix_evpn *p, | |
1895 | struct bgp_info *parent_ri) | |
128ea8ab | 1896 | { |
d62a17ae | 1897 | struct bgp_node *rn; |
1898 | struct bgp_info *ri; | |
1899 | int ret; | |
128ea8ab | 1900 | |
d62a17ae | 1901 | /* Locate route within the VNI. */ |
1902 | /* NOTE: There is no RD here. */ | |
1903 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1904 | if (!rn) | |
1905 | return 0; | |
128ea8ab | 1906 | |
d62a17ae | 1907 | /* Find matching route entry. */ |
1908 | for (ri = rn->info; ri; ri = ri->next) | |
1909 | if (ri->extra | |
1910 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1911 | break; | |
128ea8ab | 1912 | |
d62a17ae | 1913 | if (!ri) |
1914 | return 0; | |
128ea8ab | 1915 | |
d62a17ae | 1916 | /* Mark entry for deletion */ |
1917 | bgp_info_delete(rn, ri); | |
128ea8ab | 1918 | |
d62a17ae | 1919 | /* Perform route selection and update zebra, if required. */ |
1920 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 1921 | |
d62a17ae | 1922 | /* Unlock route node. */ |
1923 | bgp_unlock_node(rn); | |
128ea8ab | 1924 | |
d62a17ae | 1925 | return ret; |
128ea8ab | 1926 | } |
1927 | ||
5ba238b7 MK |
1928 | /* |
1929 | * Given a route entry and a VRF, see if this route entry should be | |
1930 | * imported into the VRF i.e., RTs match. | |
1931 | */ | |
1932 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, | |
1933 | struct bgp_info *ri) | |
1934 | { | |
1935 | struct attr *attr = ri->attr; | |
1936 | struct ecommunity *ecom; | |
1937 | int i; | |
1938 | ||
1939 | assert(attr); | |
1940 | /* Route should have valid RT to be even considered. */ | |
1941 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
1942 | return 0; | |
1943 | ||
1944 | ecom = attr->ecommunity; | |
1945 | if (!ecom || !ecom->size) | |
1946 | return 0; | |
1947 | ||
1948 | /* For each extended community RT, see if it matches this VNI. If any RT | |
1949 | * matches, we're done. | |
1950 | */ | |
1951 | for (i = 0; i < ecom->size; i++) { | |
1952 | u_char *pnt; | |
1953 | u_char type, sub_type; | |
1954 | struct ecommunity_val *eval; | |
1955 | struct ecommunity_val eval_tmp; | |
1956 | struct vrf_irt_node *irt; | |
1957 | ||
1958 | /* Only deal with RTs */ | |
1959 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
1960 | eval = (struct ecommunity_val *)(ecom->val | |
1961 | + (i * ECOMMUNITY_SIZE)); | |
1962 | type = *pnt++; | |
1963 | sub_type = *pnt++; | |
1964 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
1965 | continue; | |
1966 | ||
1967 | /* See if this RT matches specified VNIs import RTs */ | |
1968 | irt = lookup_vrf_import_rt(eval); | |
1969 | if (irt && irt->vrfs) | |
1970 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
1971 | return 1; | |
1972 | ||
1973 | /* Also check for non-exact match. In this, we mask out the AS | |
1974 | * and | |
1975 | * only check on the local-admin sub-field. This is to | |
1976 | * facilitate using | |
1977 | * VNI as the RT for EBGP peering too. | |
1978 | */ | |
1979 | irt = NULL; | |
1980 | if (type == ECOMMUNITY_ENCODE_AS | |
1981 | || type == ECOMMUNITY_ENCODE_AS4 | |
1982 | || type == ECOMMUNITY_ENCODE_IP) { | |
1983 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
1984 | mask_ecom_global_admin(&eval_tmp, eval); | |
1985 | irt = lookup_vrf_import_rt(&eval_tmp); | |
1986 | } | |
1987 | if (irt && irt->vrfs) | |
1988 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
1989 | return 1; | |
1990 | } | |
1991 | ||
1992 | return 0; | |
1993 | } | |
1994 | ||
128ea8ab | 1995 | /* |
1996 | * Given a route entry and a VNI, see if this route entry should be | |
1997 | * imported into the VNI i.e., RTs match. | |
1998 | */ | |
d62a17ae | 1999 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2000 | struct bgp_info *ri) | |
2001 | { | |
2002 | struct attr *attr = ri->attr; | |
2003 | struct ecommunity *ecom; | |
2004 | int i; | |
2005 | ||
2006 | assert(attr); | |
2007 | /* Route should have valid RT to be even considered. */ | |
2008 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2009 | return 0; | |
2010 | ||
2011 | ecom = attr->ecommunity; | |
2012 | if (!ecom || !ecom->size) | |
2013 | return 0; | |
2014 | ||
2015 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2016 | * matches, we're done. | |
2017 | */ | |
2018 | for (i = 0; i < ecom->size; i++) { | |
2019 | u_char *pnt; | |
2020 | u_char type, sub_type; | |
2021 | struct ecommunity_val *eval; | |
2022 | struct ecommunity_val eval_tmp; | |
2023 | struct irt_node *irt; | |
2024 | ||
2025 | /* Only deal with RTs */ | |
2026 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2027 | eval = (struct ecommunity_val *)(ecom->val | |
2028 | + (i * ECOMMUNITY_SIZE)); | |
2029 | type = *pnt++; | |
2030 | sub_type = *pnt++; | |
2031 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2032 | continue; | |
2033 | ||
2034 | /* See if this RT matches specified VNIs import RTs */ | |
2035 | irt = lookup_import_rt(bgp, eval); | |
2036 | if (irt && irt->vnis) | |
2037 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2038 | return 1; | |
2039 | ||
2040 | /* Also check for non-exact match. In this, we mask out the AS | |
2041 | * and | |
2042 | * only check on the local-admin sub-field. This is to | |
2043 | * facilitate using | |
2044 | * VNI as the RT for EBGP peering too. | |
2045 | */ | |
2046 | irt = NULL; | |
2047 | if (type == ECOMMUNITY_ENCODE_AS | |
2048 | || type == ECOMMUNITY_ENCODE_AS4 | |
2049 | || type == ECOMMUNITY_ENCODE_IP) { | |
2050 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2051 | mask_ecom_global_admin(&eval_tmp, eval); | |
2052 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2053 | } | |
2054 | if (irt && irt->vnis) | |
2055 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2056 | return 1; | |
2057 | } | |
2058 | ||
2059 | return 0; | |
128ea8ab | 2060 | } |
2061 | ||
5ba238b7 MK |
2062 | /* |
2063 | * Install or uninstall mac-ip routes are appropriate for this | |
2064 | * particular VRF. | |
2065 | */ | |
2066 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, | |
2067 | int install) | |
2068 | { | |
2069 | afi_t afi; | |
2070 | safi_t safi; | |
2071 | struct bgp_node *rd_rn, *rn; | |
2072 | struct bgp_table *table; | |
2073 | struct bgp_info *ri; | |
2074 | int ret; | |
2075 | char buf[PREFIX_STRLEN]; | |
2076 | struct bgp *bgp_def = NULL; | |
2077 | ||
2078 | afi = AFI_L2VPN; | |
2079 | safi = SAFI_EVPN; | |
2080 | bgp_def = bgp_get_default(); | |
2081 | if (!bgp_def) | |
2082 | return -1; | |
2083 | ||
2084 | /* Walk entire global routing table and evaluate routes which could be | |
2085 | * imported into this VRF. Note that we need to loop through all global | |
2086 | * routes to determine which route matches the import rt on vrf | |
2087 | */ | |
2088 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2089 | rd_rn = bgp_route_next(rd_rn)) { | |
2090 | table = (struct bgp_table *)(rd_rn->info); | |
2091 | if (!table) | |
2092 | continue; | |
2093 | ||
2094 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2095 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2096 | ||
1eb88002 | 2097 | /* if not mac-ip route skip this route */ |
5ba238b7 MK |
2098 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2099 | continue; | |
2100 | ||
1eb88002 MK |
2101 | /* if not a mac+ip route skip this route */ |
2102 | if (!(IS_EVPN_PREFIX_IPADDR_V4(evp) || | |
2103 | IS_EVPN_PREFIX_IPADDR_V6(evp))) | |
2104 | continue; | |
2105 | ||
5ba238b7 MK |
2106 | for (ri = rn->info; ri; ri = ri->next) { |
2107 | /* Consider "valid" remote routes applicable for | |
2108 | * this VRF. */ | |
2109 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2110 | && ri->type == ZEBRA_ROUTE_BGP | |
2111 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2112 | continue; | |
2113 | ||
2114 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2115 | if (install) | |
2116 | ret = | |
2117 | install_evpn_route_entry_in_vrf( | |
2118 | bgp_vrf, evp, ri); | |
2119 | else | |
2120 | ret = | |
2121 | uninstall_evpn_route_entry_in_vrf( | |
2122 | bgp_vrf, evp, ri); | |
2123 | ||
2124 | if (ret) { | |
2125 | zlog_err( | |
2126 | "Failed to %s EVPN %s route in VRF %s", | |
2127 | install ? "install" | |
2128 | : "uninstall", | |
2129 | prefix2str(evp, buf, | |
2130 | sizeof(buf)), | |
2131 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2132 | return ret; | |
2133 | } | |
2134 | } | |
2135 | } | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | return 0; | |
2140 | } | |
2141 | ||
128ea8ab | 2142 | /* |
2143 | * Install or uninstall routes of specified type that are appropriate for this | |
2144 | * particular VNI. | |
2145 | */ | |
d62a17ae | 2146 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2147 | struct bgpevpn *vpn, | |
2148 | bgp_evpn_route_type rtype, | |
2149 | int install) | |
2150 | { | |
0291c246 MK |
2151 | afi_t afi; |
2152 | safi_t safi; | |
2153 | struct bgp_node *rd_rn, *rn; | |
2154 | struct bgp_table *table; | |
2155 | struct bgp_info *ri; | |
2156 | int ret; | |
d62a17ae | 2157 | |
2158 | afi = AFI_L2VPN; | |
2159 | safi = SAFI_EVPN; | |
2160 | ||
2161 | /* Walk entire global routing table and evaluate routes which could be | |
2162 | * imported into this VPN. Note that we cannot just look at the routes | |
2163 | * for | |
2164 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2165 | * RD. | |
2166 | */ | |
2167 | /* EVPN routes are a 2-level table. */ | |
2168 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2169 | rd_rn = bgp_route_next(rd_rn)) { | |
2170 | table = (struct bgp_table *)(rd_rn->info); | |
2171 | if (!table) | |
2172 | continue; | |
2173 | ||
2174 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2175 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2176 | ||
2177 | if (evp->prefix.route_type != rtype) | |
2178 | continue; | |
2179 | ||
2180 | for (ri = rn->info; ri; ri = ri->next) { | |
2181 | /* Consider "valid" remote routes applicable for | |
2182 | * this VNI. */ | |
2183 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2184 | && ri->type == ZEBRA_ROUTE_BGP | |
2185 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2186 | continue; | |
2187 | ||
2188 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2189 | if (install) | |
2190 | ret = install_evpn_route_entry( | |
60466a63 | 2191 | bgp, vpn, evp, ri); |
d62a17ae | 2192 | else |
2193 | ret = uninstall_evpn_route_entry( | |
2194 | bgp, vpn, evp, ri); | |
2195 | ||
2196 | if (ret) { | |
2197 | zlog_err( | |
2198 | "%u: Failed to %s EVPN %s route in VNI %u", | |
2199 | bgp->vrf_id, | |
2200 | install ? "install" | |
2201 | : "uninstall", | |
2202 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
2203 | ? "MACIP" | |
2204 | : "IMET", | |
2205 | vpn->vni); | |
2206 | return ret; | |
2207 | } | |
2208 | } | |
2209 | } | |
2210 | } | |
2211 | } | |
2212 | ||
2213 | return 0; | |
128ea8ab | 2214 | } |
2215 | ||
5ba238b7 MK |
2216 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
2217 | * is invoked upon l3vni-add or l3vni import rt change */ | |
2218 | static int install_routes_for_vrf(struct bgp *bgp_vrf) | |
2219 | { | |
2220 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
2221 | return 0; | |
2222 | } | |
2223 | ||
128ea8ab | 2224 | /* |
2225 | * Install any existing remote routes applicable for this VNI into its | |
2226 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
2227 | * RT is changed. | |
2228 | */ | |
d62a17ae | 2229 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2230 | { |
d62a17ae | 2231 | int ret; |
128ea8ab | 2232 | |
d62a17ae | 2233 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
2234 | * for this VNI. | |
2235 | */ | |
2236 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
2237 | 1); | |
2238 | if (ret) | |
2239 | return ret; | |
128ea8ab | 2240 | |
d62a17ae | 2241 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
2242 | 1); | |
128ea8ab | 2243 | } |
2244 | ||
5ba238b7 MK |
2245 | /* uninstall routes from l3vni vrf. */ |
2246 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
2247 | { | |
2248 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
2249 | return 0; | |
2250 | } | |
2251 | ||
90e60aa7 | 2252 | /* |
2253 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
2254 | * this is invoked is upon an import RT change. | |
2255 | */ | |
d62a17ae | 2256 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2257 | { |
d62a17ae | 2258 | int ret; |
90e60aa7 | 2259 | |
d62a17ae | 2260 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
2261 | * applicable | |
2262 | * for this VNI. | |
2263 | */ | |
2264 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
2265 | 0); | |
2266 | if (ret) | |
2267 | return ret; | |
90e60aa7 | 2268 | |
d62a17ae | 2269 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
2270 | 0); | |
90e60aa7 | 2271 | } |
2272 | ||
d3135ba3 | 2273 | /* |
2274 | * Install or uninstall route in matching VRFs (list). | |
2275 | */ | |
2276 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
2277 | safi_t safi, struct prefix_evpn *evp, | |
2278 | struct bgp_info *ri, | |
2279 | struct list *vrfs, int install) | |
2280 | { | |
2281 | char buf[PREFIX2STR_BUFFER]; | |
2282 | struct bgp *bgp_vrf; | |
2283 | struct listnode *node, *nnode; | |
2284 | ||
2285 | /* Only type-2 routes go into a VRF */ | |
2286 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
2287 | return 0; | |
2288 | ||
30a30f57 MK |
2289 | /* if not a mac+ip route skip this route */ |
2290 | if (!(IS_EVPN_PREFIX_IPADDR_V4(evp) || | |
2291 | IS_EVPN_PREFIX_IPADDR_V6(evp))) | |
2292 | return 0; | |
2293 | ||
d3135ba3 | 2294 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
2295 | int ret; | |
2296 | ||
2297 | if (install) | |
2298 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, | |
2299 | evp, ri); | |
2300 | else | |
2301 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, | |
2302 | evp, ri); | |
2303 | ||
2304 | if (ret) { | |
2305 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
2306 | bgp_def->vrf_id, | |
2307 | install ? "install" : "uninstall", | |
2308 | prefix2str(evp, buf, sizeof(buf)), | |
2309 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2310 | return ret; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | return 0; | |
2315 | } | |
2316 | ||
128ea8ab | 2317 | /* |
2318 | * Install or uninstall route in matching VNIs (list). | |
2319 | */ | |
d62a17ae | 2320 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
2321 | safi_t safi, struct prefix_evpn *evp, | |
2322 | struct bgp_info *ri, | |
2323 | struct list *vnis, int install) | |
128ea8ab | 2324 | { |
d62a17ae | 2325 | struct bgpevpn *vpn; |
2326 | struct listnode *node, *nnode; | |
128ea8ab | 2327 | |
d62a17ae | 2328 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
2329 | int ret; | |
128ea8ab | 2330 | |
d62a17ae | 2331 | if (!is_vni_live(vpn)) |
2332 | continue; | |
128ea8ab | 2333 | |
d62a17ae | 2334 | if (install) |
2335 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
2336 | else | |
2337 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 2338 | |
d62a17ae | 2339 | if (ret) { |
2340 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
2341 | bgp->vrf_id, install ? "install" : "uninstall", | |
2342 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2343 | ? "MACIP" | |
2344 | : "IMET", | |
2345 | vpn->vni); | |
2346 | return ret; | |
2347 | } | |
2348 | } | |
128ea8ab | 2349 | |
d62a17ae | 2350 | return 0; |
128ea8ab | 2351 | } |
2352 | ||
2353 | /* | |
2354 | * Install or uninstall route for appropriate VNIs. | |
2355 | */ | |
d62a17ae | 2356 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
2357 | struct prefix *p, struct bgp_info *ri, | |
2358 | int import) | |
2359 | { | |
2360 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
2361 | struct attr *attr = ri->attr; | |
2362 | struct ecommunity *ecom; | |
2363 | int i; | |
2364 | ||
2365 | assert(attr); | |
2366 | ||
2367 | /* Only type-2 and type-3 routes go into a L2 VNI. */ | |
2368 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2369 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE)) | |
2370 | return 0; | |
2371 | ||
2372 | /* If we don't have Route Target, nothing much to do. */ | |
2373 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2374 | return 0; | |
2375 | ||
2376 | ecom = attr->ecommunity; | |
2377 | if (!ecom || !ecom->size) | |
2378 | return -1; | |
2379 | ||
2380 | /* For each extended community RT, see which VNIs match and import | |
2381 | * the route into matching VNIs. | |
2382 | */ | |
2383 | for (i = 0; i < ecom->size; i++) { | |
2384 | u_char *pnt; | |
2385 | u_char type, sub_type; | |
2386 | struct ecommunity_val *eval; | |
2387 | struct ecommunity_val eval_tmp; | |
d3135ba3 | 2388 | struct irt_node *irt; /* import rt for l2vni */ |
2389 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ | |
d62a17ae | 2390 | |
2391 | /* Only deal with RTs */ | |
2392 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2393 | eval = (struct ecommunity_val *)(ecom->val | |
2394 | + (i * ECOMMUNITY_SIZE)); | |
2395 | type = *pnt++; | |
2396 | sub_type = *pnt++; | |
2397 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2398 | continue; | |
2399 | ||
d3135ba3 | 2400 | /* Import route into matching l2-vnis */ |
d62a17ae | 2401 | irt = lookup_import_rt(bgp, eval); |
2402 | if (irt && irt->vnis) | |
2403 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2404 | irt->vnis, import); | |
2405 | ||
d3135ba3 | 2406 | /* Import route into matching l3-vnis (vrfs) */ |
2407 | vrf_irt = lookup_vrf_import_rt(eval); | |
2408 | if (vrf_irt && vrf_irt->vrfs) | |
2409 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri, | |
2410 | vrf_irt->vrfs, import); | |
2411 | ||
d62a17ae | 2412 | /* Also check for non-exact match. In this, we mask out the AS |
2413 | * and | |
2414 | * only check on the local-admin sub-field. This is to | |
2415 | * facilitate using | |
2416 | * VNI as the RT for EBGP peering too. | |
2417 | */ | |
2418 | irt = NULL; | |
d3135ba3 | 2419 | vrf_irt = NULL; |
d62a17ae | 2420 | if (type == ECOMMUNITY_ENCODE_AS |
2421 | || type == ECOMMUNITY_ENCODE_AS4 | |
2422 | || type == ECOMMUNITY_ENCODE_IP) { | |
2423 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2424 | mask_ecom_global_admin(&eval_tmp, eval); | |
2425 | irt = lookup_import_rt(bgp, &eval_tmp); | |
d3135ba3 | 2426 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); |
d62a17ae | 2427 | } |
2428 | if (irt && irt->vnis) | |
2429 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2430 | irt->vnis, import); | |
d3135ba3 | 2431 | if (vrf_irt && vrf_irt->vrfs) |
2432 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, | |
2433 | ri, vrf_irt->vrfs, | |
2434 | import); | |
d62a17ae | 2435 | } |
2436 | ||
2437 | return 0; | |
128ea8ab | 2438 | } |
2439 | ||
80b140af MK |
2440 | /* delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 |
2441 | * routes */ | |
2442 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) | |
2443 | { | |
2444 | /* delete all ipv4 routes and withdraw from peers */ | |
2445 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP); | |
2446 | ||
2447 | /* delete all ipv6 routes and withdraw from peers */ | |
2448 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6); | |
2449 | } | |
2450 | ||
2451 | /* update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
2452 | * routes */ | |
2453 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) | |
2454 | { | |
2455 | /* update all ipv4 routes */ | |
2456 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP); | |
2457 | ||
2458 | /* update all ipv6 routes */ | |
2459 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6); | |
2460 | } | |
2461 | ||
676f83b9 | 2462 | /* |
2463 | * update and advertise local routes for a VRF as type-5 routes. | |
2464 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
2465 | * done in the global route table using the routes which already exist in the | |
2466 | * VRF routing table | |
2467 | */ | |
80b140af | 2468 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2469 | { |
80b140af MK |
2470 | /* skip if the RD is configured */ |
2471 | if (is_vrf_rd_configured(bgp_vrf)) | |
2472 | return; | |
2473 | ||
2474 | /* derive the RD for the VRF based on new router-id */ | |
2475 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
2476 | ||
2477 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
2478 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 2479 | } |
2480 | ||
2481 | /* | |
2482 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
2483 | * This is invoked upon VRF RD change. The processing is done only from global | |
2484 | * table. | |
2485 | */ | |
80b140af | 2486 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2487 | { |
80b140af MK |
2488 | /* skip if the RD is configured */ |
2489 | if (is_vrf_rd_configured(bgp_vrf)) | |
2490 | return; | |
2491 | ||
2492 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
2493 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 2494 | } |
2495 | ||
90e60aa7 | 2496 | /* |
2497 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
2498 | * change. Note that the processing is done only on the global route table | |
2499 | * using routes that already exist in the per-VNI table. | |
2500 | */ | |
d62a17ae | 2501 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2502 | { | |
2503 | struct prefix_evpn p; | |
2504 | struct bgp_node *rn, *global_rn; | |
2505 | struct bgp_info *ri, *global_ri; | |
2506 | struct attr *attr; | |
2507 | afi_t afi = AFI_L2VPN; | |
2508 | safi_t safi = SAFI_EVPN; | |
2509 | ||
2510 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
2511 | * attributes to create and advertise the type-3 route for this VNI | |
2512 | * in the global table. | |
2513 | */ | |
2514 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2515 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
2516 | if (!rn) /* unexpected */ | |
2517 | return 0; | |
2518 | for (ri = rn->info; ri; ri = ri->next) | |
2519 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
2520 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2521 | break; | |
2522 | if (!ri) /* unexpected */ | |
2523 | return 0; | |
2524 | attr = ri->attr; | |
2525 | ||
2526 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2527 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
2528 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
2529 | 0); | |
d62a17ae | 2530 | |
2531 | /* Schedule for processing and unlock node. */ | |
2532 | bgp_process(bgp, global_rn, afi, safi); | |
2533 | bgp_unlock_node(global_rn); | |
2534 | ||
2535 | /* Now, walk this VNI's route table and use the route and its attribute | |
2536 | * to create and schedule route in global table. | |
2537 | */ | |
2538 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2539 | rn = bgp_route_next(rn)) { | |
2540 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2541 | ||
2542 | /* Identify MAC-IP local routes. */ | |
2543 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2544 | continue; | |
2545 | ||
2546 | for (ri = rn->info; ri; ri = ri->next) | |
2547 | if (ri->peer == bgp->peer_self | |
2548 | && ri->type == ZEBRA_ROUTE_BGP | |
2549 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2550 | break; | |
2551 | if (!ri) | |
2552 | continue; | |
2553 | ||
2554 | /* Create route in global routing table using this route entry's | |
2555 | * attribute. | |
2556 | */ | |
2557 | attr = ri->attr; | |
2558 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2559 | (struct prefix *)evp, &vpn->prd); | |
2560 | assert(global_rn); | |
2561 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 2562 | 0, &global_ri, 0); |
d62a17ae | 2563 | |
2564 | /* Schedule for processing and unlock node. */ | |
2565 | bgp_process(bgp, global_rn, afi, safi); | |
2566 | bgp_unlock_node(global_rn); | |
2567 | } | |
2568 | ||
2569 | return 0; | |
90e60aa7 | 2570 | } |
2571 | ||
2572 | /* | |
2573 | * Delete (and withdraw) local routes for a VNI - only from the global | |
2574 | * table. Invoked upon router-id change. | |
2575 | */ | |
d62a17ae | 2576 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2577 | { |
d62a17ae | 2578 | int ret; |
2579 | struct prefix_evpn p; | |
2580 | struct bgp_node *global_rn; | |
2581 | struct bgp_info *ri; | |
2582 | afi_t afi = AFI_L2VPN; | |
2583 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 2584 | |
d62a17ae | 2585 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2586 | * for this VNI - from the global table. | |
2587 | */ | |
2588 | ret = delete_global_type2_routes(bgp, vpn); | |
2589 | if (ret) | |
2590 | return ret; | |
90e60aa7 | 2591 | |
d62a17ae | 2592 | /* Remove type-3 route for this VNI from global table. */ |
2593 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2594 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2595 | (struct prefix *)&p, &vpn->prd); | |
2596 | if (global_rn) { | |
2597 | /* Delete route entry in the global EVPN table. */ | |
2598 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
90e60aa7 | 2599 | |
d62a17ae | 2600 | /* Schedule for processing - withdraws to peers happen from |
2601 | * this table. | |
2602 | */ | |
2603 | if (ri) | |
2604 | bgp_process(bgp, global_rn, afi, safi); | |
2605 | bgp_unlock_node(global_rn); | |
2606 | } | |
90e60aa7 | 2607 | |
d62a17ae | 2608 | return 0; |
90e60aa7 | 2609 | } |
2610 | ||
2d48ee25 | 2611 | /* |
2612 | * Handle router-id change. Update and advertise local routes corresponding | |
2613 | * to this VNI from peers. Note that this is invoked after updating the | |
2614 | * router-id. The routes in the per-VNI table are used to create routes in | |
2615 | * the global table and schedule them. | |
2616 | */ | |
d62a17ae | 2617 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2618 | { |
d62a17ae | 2619 | struct bgpevpn *vpn; |
2d48ee25 | 2620 | |
d62a17ae | 2621 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2622 | |
d62a17ae | 2623 | if (!vpn) { |
2624 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2625 | return; | |
2626 | } | |
2d48ee25 | 2627 | |
d62a17ae | 2628 | /* Skip VNIs with configured RD. */ |
2629 | if (is_rd_configured(vpn)) | |
2630 | return; | |
2d48ee25 | 2631 | |
d62a17ae | 2632 | bgp_evpn_derive_auto_rd(bgp, vpn); |
2633 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 2634 | } |
2635 | ||
2636 | /* | |
2637 | * Handle router-id change. Delete and withdraw local routes corresponding | |
2638 | * to this VNI from peers. Note that this is invoked prior to updating | |
2639 | * the router-id and is done only on the global route table, the routes | |
2640 | * are needed in the per-VNI table to re-advertise with new router id. | |
2641 | */ | |
d62a17ae | 2642 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2643 | { |
d62a17ae | 2644 | struct bgpevpn *vpn; |
2d48ee25 | 2645 | |
d62a17ae | 2646 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2647 | |
d62a17ae | 2648 | if (!vpn) { |
2649 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2650 | return; | |
2651 | } | |
2d48ee25 | 2652 | |
d62a17ae | 2653 | /* Skip VNIs with configured RD. */ |
2654 | if (is_rd_configured(vpn)) | |
2655 | return; | |
2d48ee25 | 2656 | |
d62a17ae | 2657 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 2658 | } |
2659 | ||
128ea8ab | 2660 | /* |
2661 | * Process received EVPN type-2 route (advertise or withdraw). | |
2662 | */ | |
d62a17ae | 2663 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
2664 | struct attr *attr, u_char *pfx, int psize, | |
2665 | u_int32_t addpath_id) | |
2666 | { | |
2667 | struct prefix_rd prd; | |
2668 | struct prefix_evpn p; | |
2669 | u_char ipaddr_len; | |
2670 | u_char macaddr_len; | |
2671 | mpls_label_t *label_pnt; | |
2672 | int ret; | |
2673 | ||
2674 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
2675 | * additional 3 bytes if there is a second label (VNI): | |
2676 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
2677 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
2678 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
2679 | */ | |
2680 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
2681 | && psize != 40 && psize != 52) { | |
2682 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
2683 | peer->bgp->vrf_id, peer->host, psize); | |
2684 | return -1; | |
2685 | } | |
2686 | ||
2687 | /* Make prefix_rd */ | |
2688 | prd.family = AF_UNSPEC; | |
2689 | prd.prefixlen = 64; | |
2690 | memcpy(&prd.val, pfx, 8); | |
2691 | pfx += 8; | |
2692 | ||
2693 | /* Make EVPN prefix. */ | |
2694 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2695 | p.family = AF_EVPN; |
d62a17ae | 2696 | p.prefixlen = EVPN_TYPE_2_ROUTE_PREFIXLEN; |
2697 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; | |
2698 | ||
2699 | /* Skip over Ethernet Seg Identifier for now. */ | |
2700 | pfx += 10; | |
2701 | ||
2702 | /* Skip over Ethernet Tag for now. */ | |
2703 | pfx += 4; | |
2704 | ||
2705 | /* Get the MAC Addr len */ | |
2706 | macaddr_len = *pfx++; | |
2707 | ||
2708 | /* Get the MAC Addr */ | |
28328ea9 DS |
2709 | if (macaddr_len == (ETH_ALEN * 8)) { |
2710 | memcpy(&p.prefix.mac.octet, pfx, ETH_ALEN); | |
2711 | pfx += ETH_ALEN; | |
d62a17ae | 2712 | } else { |
2713 | zlog_err( | |
2714 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
2715 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
2716 | return -1; | |
2717 | } | |
2718 | ||
2719 | ||
2720 | /* Get the IP. */ | |
2721 | ipaddr_len = *pfx++; | |
2722 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
2723 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
2724 | zlog_err( | |
2725 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
2726 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2727 | return -1; | |
2728 | } | |
2729 | ||
2730 | if (ipaddr_len) { | |
2731 | ipaddr_len /= 8; /* Convert to bytes. */ | |
2732 | p.prefix.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) | |
2733 | ? IPADDR_V4 | |
2734 | : IPADDR_V6; | |
2735 | memcpy(&p.prefix.ip.ip.addr, pfx, ipaddr_len); | |
2736 | } | |
2737 | pfx += ipaddr_len; | |
2738 | ||
2739 | /* Get the VNI (in MPLS label field). */ | |
2740 | /* Note: We ignore the second VNI, if any. */ | |
2741 | label_pnt = (mpls_label_t *)pfx; | |
2742 | ||
2743 | /* Process the route. */ | |
2744 | if (attr) | |
2745 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2746 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2747 | &prd, label_pnt, 0, NULL); | |
2748 | else | |
2749 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2750 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2751 | &prd, label_pnt, NULL); | |
2752 | return ret; | |
128ea8ab | 2753 | } |
2754 | ||
2755 | /* | |
2756 | * Process received EVPN type-3 route (advertise or withdraw). | |
2757 | */ | |
d62a17ae | 2758 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
2759 | struct attr *attr, u_char *pfx, int psize, | |
2760 | u_int32_t addpath_id) | |
2761 | { | |
2762 | struct prefix_rd prd; | |
2763 | struct prefix_evpn p; | |
2764 | u_char ipaddr_len; | |
2765 | int ret; | |
2766 | ||
2767 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
2768 | * IP len (1) and IP (4 or 16). | |
2769 | */ | |
2770 | if (psize != 17 && psize != 29) { | |
2771 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
2772 | peer->bgp->vrf_id, peer->host, psize); | |
2773 | return -1; | |
2774 | } | |
2775 | ||
2776 | /* Make prefix_rd */ | |
2777 | prd.family = AF_UNSPEC; | |
2778 | prd.prefixlen = 64; | |
2779 | memcpy(&prd.val, pfx, 8); | |
2780 | pfx += 8; | |
2781 | ||
2782 | /* Make EVPN prefix. */ | |
2783 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2784 | p.family = AF_EVPN; |
d62a17ae | 2785 | p.prefixlen = EVPN_TYPE_3_ROUTE_PREFIXLEN; |
2786 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; | |
2787 | ||
2788 | /* Skip over Ethernet Tag for now. */ | |
2789 | pfx += 4; | |
2790 | ||
2791 | /* Get the IP. */ | |
2792 | ipaddr_len = *pfx++; | |
2793 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
2794 | p.prefix.ip.ipa_type = IPADDR_V4; | |
2795 | memcpy(&p.prefix.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
2796 | } else { | |
2797 | zlog_err( | |
2798 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
2799 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2800 | return -1; | |
2801 | } | |
2802 | ||
2803 | /* Process the route. */ | |
2804 | if (attr) | |
2805 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2806 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2807 | &prd, NULL, 0, NULL); | |
2808 | else | |
2809 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2810 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2811 | &prd, NULL, NULL); | |
2812 | return ret; | |
128ea8ab | 2813 | } |
2814 | ||
2815 | /* | |
2816 | * Process received EVPN type-5 route (advertise or withdraw). | |
2817 | */ | |
d62a17ae | 2818 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
2819 | struct attr *attr, u_char *pfx, int psize, | |
2820 | u_int32_t addpath_id, int withdraw) | |
2821 | { | |
2822 | struct prefix_rd prd; | |
2823 | struct prefix_evpn p; | |
2824 | struct bgp_route_evpn evpn; | |
2825 | u_char ippfx_len; | |
2826 | u_int32_t eth_tag; | |
2827 | mpls_label_t *label_pnt; | |
2828 | int ret; | |
2829 | ||
2830 | /* Type-5 route should be 34 or 58 bytes: | |
2831 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
2832 | * GW (4 or 16) and VNI (3). | |
2833 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
2834 | */ | |
2835 | if (psize != 34 && psize != 58) { | |
2836 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
2837 | peer->bgp->vrf_id, peer->host, psize); | |
2838 | return -1; | |
2839 | } | |
2840 | ||
2841 | /* Make prefix_rd */ | |
2842 | prd.family = AF_UNSPEC; | |
2843 | prd.prefixlen = 64; | |
2844 | memcpy(&prd.val, pfx, 8); | |
2845 | pfx += 8; | |
2846 | ||
2847 | /* Make EVPN prefix. */ | |
2848 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2849 | p.family = AF_EVPN; |
d62a17ae | 2850 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
2851 | ||
2852 | /* Additional information outside of prefix - ESI and GW IP */ | |
2853 | memset(&evpn, 0, sizeof(evpn)); | |
2854 | ||
2855 | /* Fetch ESI */ | |
2856 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
2857 | pfx += 10; | |
2858 | ||
2859 | /* Fetch Ethernet Tag. */ | |
2860 | memcpy(ð_tag, pfx, 4); | |
2861 | p.prefix.eth_tag = ntohl(eth_tag); | |
2862 | pfx += 4; | |
2863 | ||
2864 | /* Fetch IP prefix length. */ | |
2865 | ippfx_len = *pfx++; | |
2866 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
2867 | zlog_err( | |
2868 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
2869 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
2870 | return -1; | |
2871 | } | |
2872 | p.prefix.ip_prefix_length = ippfx_len; | |
2873 | ||
2874 | /* Determine IPv4 or IPv6 prefix */ | |
2875 | /* Since the address and GW are from the same family, this just becomes | |
2876 | * a simple check on the total size. | |
2877 | */ | |
2878 | if (psize == 34) { | |
2879 | SET_IPADDR_V4(&p.prefix.ip); | |
2880 | memcpy(&p.prefix.ip.ipaddr_v4, pfx, 4); | |
2881 | pfx += 4; | |
2882 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
2883 | pfx += 4; | |
2884 | p.prefixlen = PREFIX_LEN_ROUTE_TYPE_5_IPV4; | |
2885 | } else { | |
2886 | SET_IPADDR_V6(&p.prefix.ip); | |
2887 | memcpy(&p.prefix.ip.ipaddr_v6, pfx, 16); | |
2888 | pfx += 16; | |
2889 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
2890 | pfx += 16; | |
2891 | p.prefixlen = PREFIX_LEN_ROUTE_TYPE_5_IPV6; | |
2892 | } | |
2893 | ||
2894 | label_pnt = (mpls_label_t *)pfx; | |
2895 | ||
2896 | /* Process the route. */ | |
2897 | if (!withdraw) | |
2898 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2899 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2900 | &prd, label_pnt, 0, &evpn); | |
2901 | else | |
2902 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2903 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
2904 | &prd, label_pnt, &evpn); | |
2905 | ||
2906 | return ret; | |
2907 | } | |
2908 | ||
2909 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
2910 | struct prefix_rd *prd, mpls_label_t *label, | |
2911 | struct attr *attr) | |
2912 | { | |
2913 | int len; | |
2914 | char temp[16]; | |
2915 | struct evpn_addr *p_evpn_p; | |
2916 | ||
2917 | memset(&temp, 0, 16); | |
b03b8898 | 2918 | if (p->family != AF_EVPN) |
d62a17ae | 2919 | return; |
2920 | p_evpn_p = &(p->u.prefix_evpn); | |
2921 | ||
2922 | if (IS_IPADDR_V4(&p_evpn_p->ip)) | |
2923 | len = 8; /* ipv4 */ | |
2924 | else | |
2925 | len = 32; /* ipv6 */ | |
d62a17ae | 2926 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
2927 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
2928 | stream_put(s, prd->val, 8); | |
0af35d90 | 2929 | if (attr) |
d62a17ae | 2930 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
2931 | else | |
2932 | stream_put(s, &temp, 10); | |
2933 | stream_putl(s, p_evpn_p->eth_tag); | |
2934 | stream_putc(s, p_evpn_p->ip_prefix_length); | |
2935 | if (IS_IPADDR_V4(&p_evpn_p->ip)) | |
2936 | stream_put_ipv4(s, p_evpn_p->ip.ipaddr_v4.s_addr); | |
2937 | else | |
2938 | stream_put(s, &p_evpn_p->ip.ipaddr_v6, 16); | |
0af35d90 | 2939 | if (attr) { |
d62a17ae | 2940 | if (IS_IPADDR_V4(&p_evpn_p->ip)) |
2941 | stream_put_ipv4(s, | |
2942 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
2943 | else | |
2944 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
2945 | } else { | |
2946 | if (IS_IPADDR_V4(&p_evpn_p->ip)) | |
2947 | stream_put_ipv4(s, 0); | |
2948 | else | |
2949 | stream_put(s, &temp, 16); | |
2950 | } | |
2951 | ||
2952 | if (label) | |
2953 | stream_put(s, label, 3); | |
2954 | else | |
2955 | stream_put3(s, 0); | |
128ea8ab | 2956 | } |
2957 | ||
2958 | /* | |
2959 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
2960 | */ | |
d62a17ae | 2961 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 2962 | { |
d62a17ae | 2963 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 2964 | |
d62a17ae | 2965 | /* Remove EVPN routes and schedule for processing. */ |
2966 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 2967 | |
d62a17ae | 2968 | /* Clear "live" flag and see if hash needs to be freed. */ |
2969 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
2970 | if (!is_vni_configured(vpn)) | |
2971 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 2972 | } |
2973 | ||
2974 | /* | |
2975 | * Free a VNI entry; iterator function called during cleanup. | |
2976 | */ | |
d62a17ae | 2977 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 2978 | { |
d62a17ae | 2979 | struct bgpevpn *vpn; |
128ea8ab | 2980 | |
d62a17ae | 2981 | vpn = (struct bgpevpn *)backet->data; |
2982 | delete_all_vni_routes(bgp, vpn); | |
2983 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 2984 | } |
2985 | ||
c581d8b0 MK |
2986 | /* |
2987 | * Derive AUTO import RT for BGP VRF - L3VNI | |
2988 | */ | |
2989 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
2990 | { | |
10ebe1ab MK |
2991 | struct bgp *bgp_def = NULL; |
2992 | ||
c581d8b0 | 2993 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
2994 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
2995 | ||
2996 | /* Map RT to VRF */ | |
2997 | bgp_def = bgp_get_default(); | |
2998 | if (!bgp_def) | |
2999 | return; | |
3000 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3001 | } |
3002 | ||
3003 | /* | |
3004 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3005 | */ | |
3006 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3007 | { | |
3008 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
3009 | } | |
3010 | ||
3011 | /* | |
3012 | * Derive AUTO export RT for BGP VRF - L3VNI | |
3013 | */ | |
3014 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
3015 | { | |
3016 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3017 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3018 | } | |
3019 | ||
3020 | /* | |
3021 | * Delete AUTO export RT from BGP VRF - L3VNI | |
3022 | */ | |
3023 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
3024 | { | |
3025 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3026 | } | |
128ea8ab | 3027 | |
f1f8b53c MK |
3028 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
3029 | { | |
3030 | struct bgp *bgp_def = NULL; | |
3031 | struct listnode *node = NULL; | |
3032 | struct bgpevpn *vpn = NULL; | |
3033 | ||
3034 | bgp_def = bgp_get_default(); | |
3035 | if (!bgp_def) | |
3036 | return; | |
3037 | ||
4992b4ae MK |
3038 | /* update all type-5 routes */ |
3039 | update_advertise_vrf_routes(bgp_vrf); | |
3040 | ||
3041 | /* update all type-2 routes */ | |
f1f8b53c MK |
3042 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
3043 | update_routes_for_vni(bgp_def, vpn); | |
3044 | } | |
3045 | ||
128ea8ab | 3046 | /* |
3047 | * Public functions. | |
3048 | */ | |
3049 | ||
342dd0c6 | 3050 | /* withdraw all type-5 routes for an address family */ |
3051 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, | |
3052 | afi_t afi) | |
3053 | { | |
3054 | struct bgp_table *table = NULL; | |
3055 | struct bgp_node *rn = NULL; | |
3056 | ||
06d2e8f3 MK |
3057 | if (!advertise_type5_routes(bgp_vrf, afi)) |
3058 | return; | |
3059 | ||
342dd0c6 | 3060 | table = bgp_vrf->rib[afi][SAFI_UNICAST]; |
3061 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3062 | ||
3063 | int ret = 0; | |
3064 | struct prefix_evpn evp; | |
3065 | char buf[PREFIX_STRLEN]; | |
3066 | ||
3067 | build_type5_prefix_from_ip_prefix(&evp, &rn->p); | |
3068 | ret = delete_evpn_type5_route(bgp_vrf, &evp); | |
3069 | if (ret) { | |
3070 | zlog_err( | |
3071 | "%u failed to delete type-5 route for prefix %s in vrf %s", | |
3072 | bgp_vrf->vrf_id, | |
3073 | prefix2str(&rn->p, buf, sizeof(buf)), | |
3074 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
3075 | } | |
3076 | } | |
3077 | } | |
3078 | ||
3079 | /* advertise all type-5 routes for an address family */ | |
3080 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, | |
3081 | afi_t afi) | |
3082 | { | |
3083 | struct bgp_table *table = NULL; | |
3084 | struct bgp_node *rn = NULL; | |
3085 | ||
06d2e8f3 MK |
3086 | if (!advertise_type5_routes(bgp_vrf, afi)) |
3087 | return; | |
3088 | ||
342dd0c6 | 3089 | table = bgp_vrf->rib[afi][SAFI_UNICAST]; |
3090 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3091 | ||
3092 | int ret = 0; | |
3093 | struct prefix_evpn evp; | |
3094 | char buf[PREFIX_STRLEN]; | |
3095 | ||
3096 | build_type5_prefix_from_ip_prefix(&evp, &rn->p); | |
3097 | ret = update_evpn_type5_route(bgp_vrf, &evp); | |
3098 | if (ret) { | |
3099 | zlog_err( | |
3100 | "%u failed to create type-5 route for prefix %s in vrf %s", | |
3101 | bgp_vrf->vrf_id, | |
3102 | prefix2str(&rn->p, buf, sizeof(buf)), | |
3103 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
3104 | } | |
3105 | } | |
3106 | } | |
3107 | ||
c581d8b0 MK |
3108 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, |
3109 | struct list *rtl) | |
3110 | { | |
3111 | struct listnode *node, *nnode, *node_to_del; | |
3112 | struct ecommunity *ecom, *ecom_auto; | |
3113 | struct ecommunity_val eval; | |
3114 | ||
3115 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); | |
3116 | ||
3117 | ecom_auto = ecommunity_new(); | |
3118 | ecommunity_add_val(ecom_auto, &eval); | |
3119 | node_to_del = NULL; | |
3120 | ||
3121 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
3122 | if (ecommunity_match(ecom, ecom_auto)) { | |
3123 | ecommunity_free(&ecom); | |
3124 | node_to_del = node; | |
3125 | } | |
3126 | } | |
3127 | ||
3128 | if (node_to_del) | |
3129 | list_delete_node(rtl, node_to_del); | |
3130 | ||
3131 | ecommunity_free(&ecom_auto); | |
3132 | } | |
3133 | ||
3134 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 3135 | struct ecommunity *ecomadd) |
c581d8b0 | 3136 | { |
5ba238b7 MK |
3137 | /* uninstall routes from vrf */ |
3138 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3139 | |
3140 | /* Cleanup the RT to VRF mapping */ | |
3141 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3142 | ||
c581d8b0 MK |
3143 | /* Remove auto generated RT */ |
3144 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
3145 | ||
3146 | /* Add the newly configured RT to RT list */ | |
3147 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
3148 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3149 | ||
10ebe1ab MK |
3150 | /* map VRF to its RTs */ |
3151 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3152 | ||
5ba238b7 MK |
3153 | /* install routes matching the new VRF */ |
3154 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3155 | } |
3156 | ||
3157 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
3158 | struct ecommunity *ecomdel) | |
3159 | { | |
3160 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3161 | struct ecommunity *ecom = NULL; | |
3162 | ||
5ba238b7 MK |
3163 | /* uninstall routes from vrf */ |
3164 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3165 | |
3166 | /* Cleanup the RT to VRF mapping */ | |
3167 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3168 | ||
c581d8b0 MK |
3169 | /* remove the RT from the RT list */ |
3170 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3171 | if (ecommunity_match(ecom, ecomdel)) { | |
3172 | ecommunity_free(&ecom); | |
3173 | node_to_del = node; | |
3174 | break; | |
3175 | } | |
3176 | } | |
3177 | ||
3178 | if (node_to_del) | |
3179 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
3180 | ||
3181 | /* fallback to auto import rt, if this was the last RT */ | |
3182 | if (list_isempty(bgp_vrf->vrf_import_rtl)) { | |
3183 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3184 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
3185 | } | |
3186 | ||
10ebe1ab MK |
3187 | /* map VRFs to its RTs */ |
3188 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3189 | ||
5ba238b7 MK |
3190 | /* install routes matching this new RT */ |
3191 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3192 | } |
3193 | ||
3194 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3195 | struct ecommunity *ecomadd) | |
3196 | { | |
3197 | /* remove auto-generated RT */ | |
3198 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
3199 | ||
3200 | /* Add the new RT to the RT list */ | |
3201 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
3202 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3203 | ||
f1f8b53c MK |
3204 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
3205 | ||
c581d8b0 MK |
3206 | } |
3207 | ||
3208 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3209 | struct ecommunity *ecomdel) | |
3210 | { | |
3211 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3212 | struct ecommunity *ecom = NULL; | |
3213 | ||
3214 | /* Remove the RT from the RT list */ | |
3215 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
3216 | if (ecommunity_match(ecom, ecomdel)) { | |
3217 | ecommunity_free(&ecom); | |
3218 | node_to_del = node; | |
3219 | break; | |
3220 | } | |
3221 | } | |
3222 | ||
3223 | if (node_to_del) | |
3224 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
3225 | ||
3226 | /* fall back to auto-generated RT if this was the last RT */ | |
3227 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { | |
3228 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3229 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
3230 | } | |
3231 | ||
f1f8b53c | 3232 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
3233 | } |
3234 | ||
2d48ee25 | 3235 | /* |
3236 | * Handle change to BGP router id. This is invoked twice by the change | |
3237 | * handler, first before the router id has been changed and then after | |
3238 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 3239 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 3240 | * will result in the routes being re-advertised. |
3241 | */ | |
d62a17ae | 3242 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 3243 | { |
676f83b9 | 3244 | if (withdraw) { |
3245 | ||
3246 | /* delete and withdraw all the type-5 routes | |
3247 | stored in the global table for this vrf */ | |
80b140af | 3248 | withdraw_router_id_vrf(bgp); |
676f83b9 | 3249 | |
3250 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
3251 | * L2-VNIs */ | |
d62a17ae | 3252 | hash_iterate(bgp->vnihash, |
3253 | (void (*)(struct hash_backet *, | |
3254 | void *))withdraw_router_id_vni, | |
3255 | bgp); | |
676f83b9 | 3256 | } else { |
3257 | ||
3258 | /* advertise all routes in the vrf as type-5 routes with the new | |
3259 | * RD */ | |
80b140af | 3260 | update_router_id_vrf(bgp); |
676f83b9 | 3261 | |
3262 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
3263 | * new RD*/ | |
d62a17ae | 3264 | hash_iterate(bgp->vnihash, |
3265 | (void (*)(struct hash_backet *, | |
3266 | void *))update_router_id_vni, | |
3267 | bgp); | |
676f83b9 | 3268 | } |
2d48ee25 | 3269 | } |
3270 | ||
90e60aa7 | 3271 | /* |
3272 | * Handle change to export RT - update and advertise local routes. | |
3273 | */ | |
d62a17ae | 3274 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3275 | { |
d62a17ae | 3276 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 3277 | } |
3278 | ||
676f83b9 | 3279 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, |
3280 | int withdraw) | |
3281 | { | |
3282 | if (withdraw) | |
3283 | delete_withdraw_vrf_routes(bgp_vrf); | |
3284 | else | |
3285 | update_advertise_vrf_routes(bgp_vrf); | |
3286 | } | |
3287 | ||
90e60aa7 | 3288 | /* |
3289 | * Handle change to RD. This is invoked twice by the change handler, | |
3290 | * first before the RD has been changed and then after the RD has | |
3291 | * been changed. The first invocation will result in local routes | |
3292 | * of this VNI being deleted and withdrawn and the next will result | |
3293 | * in the routes being re-advertised. | |
3294 | */ | |
d62a17ae | 3295 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
3296 | int withdraw) | |
90e60aa7 | 3297 | { |
d62a17ae | 3298 | if (withdraw) |
3299 | delete_withdraw_vni_routes(bgp, vpn); | |
3300 | else | |
3301 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 3302 | } |
3303 | ||
3304 | /* | |
3305 | * Install routes for this VNI. Invoked upon change to Import RT. | |
3306 | */ | |
d62a17ae | 3307 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3308 | { |
d62a17ae | 3309 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 3310 | } |
3311 | ||
3312 | /* | |
3313 | * Uninstall all routes installed for this VNI. Invoked upon change | |
3314 | * to Import RT. | |
3315 | */ | |
d62a17ae | 3316 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3317 | { |
d62a17ae | 3318 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 3319 | } |
3320 | ||
b16031a2 | 3321 | /* |
3322 | * Function to display "tag" in route as a VNI. | |
3323 | */ | |
d62a17ae | 3324 | char *bgp_evpn_label2str(mpls_label_t *label, char *buf, int len) |
b16031a2 | 3325 | { |
d62a17ae | 3326 | vni_t vni; |
b16031a2 | 3327 | |
d62a17ae | 3328 | vni = label2vni(label); |
3329 | snprintf(buf, len, "%u", vni); | |
3330 | return buf; | |
b16031a2 | 3331 | } |
3332 | ||
9c92b5f7 MK |
3333 | /* |
3334 | * Function to convert evpn route to json format. | |
3335 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3336 | */ | |
57f7feb6 | 3337 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 3338 | { |
b682f6de | 3339 | char buf1[ETHER_ADDR_STRLEN]; |
3340 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 3341 | |
b682f6de | 3342 | if (!json) |
3343 | return; | |
9c92b5f7 | 3344 | |
dff8f48d | 3345 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 3346 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3347 | json_object_int_add(json, "ethTag", 0); | |
57f7feb6 MK |
3348 | json_object_int_add(json, "ipLen", |
3349 | IS_EVPN_PREFIX_IPADDR_V4(p) | |
3350 | ? IPV4_MAX_BITLEN | |
3351 | : IPV6_MAX_BITLEN); | |
b682f6de | 3352 | json_object_string_add(json, "ip", |
57f7feb6 MK |
3353 | inet_ntoa(p->prefix.ip.ipaddr_v4)); |
3354 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
dff8f48d | 3355 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) { |
57f7feb6 MK |
3356 | json_object_int_add(json, "routeType", |
3357 | p->prefix.route_type); | |
3358 | json_object_int_add( | |
3359 | json, "esi", | |
3360 | 0); /* TODO: we don't support esi yet */ | |
3361 | json_object_int_add(json, "ethTag", 0); | |
3362 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
3363 | json_object_string_add(json, "mac", | |
3364 | prefix_mac2str(&p->prefix.mac, | |
3365 | buf1, | |
3366 | sizeof(buf1))); | |
dff8f48d MK |
3367 | } else { |
3368 | u_char family; | |
3369 | ||
57f7feb6 MK |
3370 | family = IS_EVPN_PREFIX_IPADDR_V4(p) ? AF_INET |
3371 | : AF_INET6; | |
dff8f48d | 3372 | |
b682f6de | 3373 | json_object_int_add(json, "routeType", |
57f7feb6 MK |
3374 | p->prefix.route_type); |
3375 | json_object_int_add( | |
3376 | json, "esi", | |
3377 | 0); /* TODO: we don't support esi yet */ | |
b682f6de | 3378 | json_object_int_add(json, "ethTag", 0); |
57f7feb6 | 3379 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 3380 | json_object_string_add(json, "mac", |
57f7feb6 MK |
3381 | prefix_mac2str(&p->prefix.mac, |
3382 | buf1, | |
3383 | sizeof(buf1))); | |
b682f6de | 3384 | json_object_int_add(json, "ipLen", |
57f7feb6 MK |
3385 | IS_EVPN_PREFIX_IPADDR_V4(p) |
3386 | ? IPV4_MAX_BITLEN | |
3387 | : IPV6_MAX_BITLEN); | |
3388 | json_object_string_add( | |
3389 | json, "ip", | |
3390 | inet_ntop(family, &p->prefix.ip.ip.addr, buf2, | |
3391 | PREFIX2STR_BUFFER)); | |
dff8f48d MK |
3392 | } |
3393 | } else { | |
3394 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
3395 | } | |
9c92b5f7 MK |
3396 | } |
3397 | ||
520d5d76 | 3398 | /* |
3399 | * Function to convert evpn route to string. | |
3400 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3401 | */ | |
d62a17ae | 3402 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
3403 | { | |
3404 | char buf1[ETHER_ADDR_STRLEN]; | |
3405 | char buf2[PREFIX2STR_BUFFER]; | |
3406 | ||
3407 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
3408 | snprintf(buf, len, "[%d]:[0]:[%d]:[%s]", p->prefix.route_type, | |
3409 | IS_EVPN_PREFIX_IPADDR_V4(p) ? IPV4_MAX_BITLEN | |
3410 | : IPV6_MAX_BITLEN, | |
3411 | inet_ntoa(p->prefix.ip.ipaddr_v4)); | |
3412 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3413 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) | |
3414 | snprintf(buf, len, "[%d]:[0]:[0]:[%d]:[%s]", | |
28328ea9 | 3415 | p->prefix.route_type, 8 * ETH_ALEN, |
d62a17ae | 3416 | prefix_mac2str(&p->prefix.mac, buf1, |
3417 | sizeof(buf1))); | |
3418 | else { | |
3419 | u_char family; | |
3420 | ||
3421 | family = IS_EVPN_PREFIX_IPADDR_V4(p) ? AF_INET | |
3422 | : AF_INET6; | |
3423 | snprintf(buf, len, "[%d]:[0]:[0]:[%d]:[%s]:[%d]:[%s]", | |
28328ea9 | 3424 | p->prefix.route_type, 8 * ETH_ALEN, |
d62a17ae | 3425 | prefix_mac2str(&p->prefix.mac, buf1, |
3426 | sizeof(buf1)), | |
3427 | family == AF_INET ? IPV4_MAX_BITLEN | |
3428 | : IPV6_MAX_BITLEN, | |
3429 | inet_ntop(family, &p->prefix.ip.ip.addr, buf2, | |
3430 | PREFIX2STR_BUFFER)); | |
3431 | } | |
342dd0c6 | 3432 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
3433 | snprintf(buf, len, "[%d]:[0]:[%d]:[%s]", | |
3434 | p->prefix.route_type, | |
3435 | p->prefix.ip_prefix_length, | |
3436 | IS_EVPN_PREFIX_IPADDR_V4(p) ? | |
3437 | inet_ntoa(p->prefix.ip.ipaddr_v4) : | |
3438 | inet6_ntoa(p->prefix.ip.ipaddr_v6)); | |
d62a17ae | 3439 | } else { |
b03b8898 | 3440 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
3441 | snprintf(buf, len, "(unsupported route type %d)", |
3442 | p->prefix.route_type); | |
d62a17ae | 3443 | } |
3444 | ||
3445 | return (buf); | |
520d5d76 | 3446 | } |
3447 | ||
128ea8ab | 3448 | /* |
3449 | * Encode EVPN prefix in Update (MP_REACH) | |
3450 | */ | |
d62a17ae | 3451 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
3452 | struct prefix_rd *prd, mpls_label_t *label, | |
3453 | struct attr *attr, int addpath_encode, | |
3454 | u_int32_t addpath_tx_id) | |
3455 | { | |
3456 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3457 | int ipa_len = 0; | |
3458 | ||
3459 | if (addpath_encode) | |
3460 | stream_putl(s, addpath_tx_id); | |
3461 | ||
3462 | /* Route type */ | |
3463 | stream_putc(s, evp->prefix.route_type); | |
3464 | ||
3465 | switch (evp->prefix.route_type) { | |
3466 | case BGP_EVPN_MAC_IP_ROUTE: | |
3467 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) | |
3468 | ipa_len = IPV4_MAX_BYTELEN; | |
3469 | else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) | |
3470 | ipa_len = IPV6_MAX_BYTELEN; | |
3471 | stream_putc(s, 33 + ipa_len); // 1 VNI | |
3472 | stream_put(s, prd->val, 8); /* RD */ | |
3473 | stream_put(s, 0, 10); /* ESI */ | |
3474 | stream_putl(s, 0); /* Ethernet Tag ID */ | |
28328ea9 | 3475 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
d62a17ae | 3476 | stream_put(s, evp->prefix.mac.octet, 6); /* Mac Addr */ |
3477 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
3478 | if (ipa_len) | |
3479 | stream_put(s, &evp->prefix.ip.ip.addr, | |
3480 | ipa_len); /* IP */ | |
3481 | stream_put(s, label, | |
3482 | BGP_LABEL_BYTES); /* VNI is contained in 'tag' */ | |
3483 | break; | |
3484 | ||
3485 | case BGP_EVPN_IMET_ROUTE: | |
3486 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
3487 | stream_put(s, prd->val, 8); /* RD */ | |
3488 | stream_putl(s, 0); /* Ethernet Tag ID */ | |
3489 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
3490 | /* Originating Router's IP Addr */ | |
3491 | stream_put_in_addr(s, &evp->prefix.ip.ipaddr_v4); | |
3492 | break; | |
3493 | ||
3494 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3495 | /* TODO: AddPath support. */ | |
3496 | evpn_mpattr_encode_type5(s, p, prd, label, attr); | |
3497 | break; | |
3498 | ||
3499 | default: | |
3500 | break; | |
3501 | } | |
3502 | } | |
3503 | ||
3504 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
3505 | struct bgp_nlri *packet, int withdraw) | |
3506 | { | |
3507 | u_char *pnt; | |
3508 | u_char *lim; | |
3509 | afi_t afi; | |
3510 | safi_t safi; | |
3511 | u_int32_t addpath_id; | |
3512 | int addpath_encoded; | |
3513 | int psize = 0; | |
3514 | u_char rtype; | |
3515 | u_char rlen; | |
3516 | struct prefix p; | |
3517 | ||
3518 | /* Check peer status. */ | |
3519 | if (peer->status != Established) { | |
3520 | zlog_err("%u:%s - EVPN update received in state %d", | |
3521 | peer->bgp->vrf_id, peer->host, peer->status); | |
3522 | return -1; | |
3523 | } | |
3524 | ||
3525 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ | |
3526 | pnt = packet->nlri; | |
3527 | lim = pnt + packet->length; | |
3528 | afi = packet->afi; | |
3529 | safi = packet->safi; | |
3530 | addpath_id = 0; | |
3531 | ||
3532 | addpath_encoded = | |
3533 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
3534 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
3535 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
3536 | ||
3537 | for (; pnt < lim; pnt += psize) { | |
3538 | /* Clear prefix structure. */ | |
3539 | memset(&p, 0, sizeof(struct prefix)); | |
3540 | ||
3541 | /* Deal with path-id if AddPath is supported. */ | |
3542 | if (addpath_encoded) { | |
3543 | /* When packet overflow occurs return immediately. */ | |
3544 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
3545 | return -1; | |
3546 | ||
3547 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
3548 | pnt += BGP_ADDPATH_ID_LEN; | |
3549 | } | |
3550 | ||
3551 | /* All EVPN NLRI types start with type and length. */ | |
3552 | if (pnt + 2 > lim) | |
3553 | return -1; | |
3554 | ||
3555 | rtype = *pnt++; | |
3556 | psize = rlen = *pnt++; | |
3557 | ||
3558 | /* When packet overflow occur return immediately. */ | |
3559 | if (pnt + psize > lim) | |
3560 | return -1; | |
3561 | ||
3562 | switch (rtype) { | |
3563 | case BGP_EVPN_MAC_IP_ROUTE: | |
3564 | if (process_type2_route(peer, afi, safi, | |
3565 | withdraw ? NULL : attr, pnt, | |
3566 | psize, addpath_id)) { | |
3567 | zlog_err( | |
3568 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
3569 | peer->bgp->vrf_id, peer->host, psize); | |
3570 | return -1; | |
3571 | } | |
3572 | break; | |
3573 | ||
3574 | case BGP_EVPN_IMET_ROUTE: | |
3575 | if (process_type3_route(peer, afi, safi, | |
3576 | withdraw ? NULL : attr, pnt, | |
3577 | psize, addpath_id)) { | |
3578 | zlog_err( | |
3579 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
3580 | peer->bgp->vrf_id, peer->host, psize); | |
3581 | return -1; | |
3582 | } | |
3583 | break; | |
3584 | ||
3585 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3586 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
3587 | psize, addpath_id, withdraw)) { | |
3588 | zlog_err( | |
3589 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
3590 | peer->bgp->vrf_id, peer->host, psize); | |
3591 | return -1; | |
3592 | } | |
3593 | break; | |
3594 | ||
3595 | default: | |
3596 | break; | |
3597 | } | |
3598 | } | |
3599 | ||
3600 | /* Packet length consistency check. */ | |
3601 | if (pnt != lim) | |
3602 | return -1; | |
3603 | ||
3604 | return 0; | |
128ea8ab | 3605 | } |
3606 | ||
10ebe1ab MK |
3607 | /* |
3608 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
3609 | * The mapping will be used during route processing. | |
3610 | * bgp_def: default bgp instance | |
3611 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
3612 | */ | |
3613 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
3614 | { | |
3615 | int i = 0; | |
3616 | struct ecommunity_val *eval = NULL; | |
3617 | struct listnode *node = NULL, *nnode = NULL; | |
3618 | struct ecommunity *ecom = NULL; | |
3619 | ||
3620 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3621 | for (i = 0; i < ecom->size; i++) { | |
3622 | eval = (struct ecommunity_val *)(ecom->val | |
3623 | + (i | |
3624 | * ECOMMUNITY_SIZE)); | |
3625 | map_vrf_to_rt(bgp_vrf, eval); | |
3626 | } | |
3627 | } | |
3628 | } | |
3629 | ||
3630 | /* | |
3631 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
3632 | */ | |
3633 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
3634 | { | |
3635 | int i; | |
3636 | struct ecommunity_val *eval; | |
3637 | struct listnode *node, *nnode; | |
3638 | struct ecommunity *ecom; | |
3639 | ||
3640 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3641 | for (i = 0; i < ecom->size; i++) { | |
3642 | struct vrf_irt_node *irt; | |
3643 | struct ecommunity_val eval_tmp; | |
3644 | ||
3645 | eval = (struct ecommunity_val *)(ecom->val | |
3646 | + (i | |
3647 | * ECOMMUNITY_SIZE)); | |
3648 | /* If using "automatic" RT, we only care about the | |
3649 | * local-admin sub-field. | |
3650 | * This is to facilitate using VNI as the RT for EBGP | |
3651 | * peering too. | |
3652 | */ | |
3653 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3654 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
3655 | BGP_VRF_IMPORT_RT_CFGD)) | |
3656 | mask_ecom_global_admin(&eval_tmp, eval); | |
3657 | ||
3658 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3659 | if (irt) | |
3660 | unmap_vrf_from_rt(bgp_vrf, irt); | |
3661 | } | |
3662 | } | |
3663 | } | |
3664 | ||
3665 | ||
128ea8ab | 3666 | |
3667 | /* | |
3668 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
3669 | * The mapping will be used during route processing. | |
3670 | */ | |
d62a17ae | 3671 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3672 | { |
d62a17ae | 3673 | int i; |
3674 | struct ecommunity_val *eval; | |
3675 | struct listnode *node, *nnode; | |
3676 | struct ecommunity *ecom; | |
128ea8ab | 3677 | |
d62a17ae | 3678 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3679 | for (i = 0; i < ecom->size; i++) { | |
3680 | eval = (struct ecommunity_val *)(ecom->val | |
3681 | + (i | |
3682 | * ECOMMUNITY_SIZE)); | |
3683 | map_vni_to_rt(bgp, vpn, eval); | |
3684 | } | |
3685 | } | |
128ea8ab | 3686 | } |
3687 | ||
3688 | /* | |
3689 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
3690 | */ | |
d62a17ae | 3691 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3692 | { |
d62a17ae | 3693 | int i; |
3694 | struct ecommunity_val *eval; | |
3695 | struct listnode *node, *nnode; | |
3696 | struct ecommunity *ecom; | |
128ea8ab | 3697 | |
d62a17ae | 3698 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3699 | for (i = 0; i < ecom->size; i++) { | |
3700 | struct irt_node *irt; | |
3701 | struct ecommunity_val eval_tmp; | |
128ea8ab | 3702 | |
d62a17ae | 3703 | eval = (struct ecommunity_val *)(ecom->val |
3704 | + (i | |
3705 | * ECOMMUNITY_SIZE)); | |
3706 | /* If using "automatic" RT, we only care about the | |
3707 | * local-admin sub-field. | |
3708 | * This is to facilitate using VNI as the RT for EBGP | |
3709 | * peering too. | |
3710 | */ | |
3711 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3712 | if (!is_import_rt_configured(vpn)) | |
3713 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 3714 | |
d62a17ae | 3715 | irt = lookup_import_rt(bgp, &eval_tmp); |
3716 | if (irt) | |
3717 | unmap_vni_from_rt(bgp, vpn, irt); | |
3718 | } | |
3719 | } | |
128ea8ab | 3720 | } |
3721 | ||
3722 | /* | |
3723 | * Derive Import RT automatically for VNI and map VNI to RT. | |
3724 | * The mapping will be used during route processing. | |
3725 | */ | |
d62a17ae | 3726 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3727 | { |
c581d8b0 | 3728 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 3729 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 3730 | |
d62a17ae | 3731 | /* Map RT to VNI */ |
3732 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 3733 | } |
3734 | ||
3735 | /* | |
3736 | * Derive Export RT automatically for VNI. | |
3737 | */ | |
d62a17ae | 3738 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3739 | { |
c581d8b0 | 3740 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 3741 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 3742 | } |
3743 | ||
676f83b9 | 3744 | /* |
3745 | * Derive RD automatically for VNI using passed information - it | |
3746 | * is of the form RouterId:unique-id-for-vni. | |
3747 | */ | |
3748 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
3749 | { | |
3750 | char buf[100]; | |
3751 | ||
3752 | bgp->vrf_prd.family = AF_UNSPEC; | |
3753 | bgp->vrf_prd.prefixlen = 64; | |
3754 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), bgp->vrf_rd_id); | |
3755 | str2prefix_rd(buf, &bgp->vrf_prd); | |
3756 | } | |
3757 | ||
128ea8ab | 3758 | /* |
3759 | * Derive RD automatically for VNI using passed information - it | |
3760 | * is of the form RouterId:unique-id-for-vni. | |
3761 | */ | |
d62a17ae | 3762 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3763 | { |
d62a17ae | 3764 | char buf[100]; |
128ea8ab | 3765 | |
d62a17ae | 3766 | vpn->prd.family = AF_UNSPEC; |
3767 | vpn->prd.prefixlen = 64; | |
3768 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 3769 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 3770 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 3771 | } |
3772 | ||
3773 | /* | |
3774 | * Lookup VNI. | |
3775 | */ | |
d62a17ae | 3776 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 3777 | { |
d62a17ae | 3778 | struct bgpevpn *vpn; |
3779 | struct bgpevpn tmp; | |
128ea8ab | 3780 | |
d62a17ae | 3781 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
3782 | tmp.vni = vni; | |
3783 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
3784 | return vpn; | |
128ea8ab | 3785 | } |
3786 | ||
3787 | /* | |
3788 | * Create a new vpn - invoked upon configuration or zebra notification. | |
3789 | */ | |
d62a17ae | 3790 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
3791 | struct in_addr originator_ip, |
3792 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 3793 | { |
d62a17ae | 3794 | struct bgpevpn *vpn; |
128ea8ab | 3795 | |
d62a17ae | 3796 | if (!bgp) |
3797 | return NULL; | |
128ea8ab | 3798 | |
d62a17ae | 3799 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
3800 | if (!vpn) | |
3801 | return NULL; | |
128ea8ab | 3802 | |
d62a17ae | 3803 | /* Set values - RD and RT set to defaults. */ |
3804 | vpn->vni = vni; | |
3805 | vpn->originator_ip = originator_ip; | |
29c53922 | 3806 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 3807 | |
d62a17ae | 3808 | /* Initialize route-target import and export lists */ |
3809 | vpn->import_rtl = list_new(); | |
3810 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
3811 | vpn->export_rtl = list_new(); | |
3812 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
e9eb5f63 | 3813 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 3814 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 3815 | |
d62a17ae | 3816 | /* Initialize EVPN route table. */ |
3817 | vpn->route_table = bgp_table_init(AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 3818 | |
d62a17ae | 3819 | /* Add to hash */ |
3820 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
3821 | XFREE(MTYPE_BGP_EVPN, vpn); | |
3822 | return NULL; | |
3823 | } | |
6a8657d0 MK |
3824 | |
3825 | /* add to l2vni list on corresponding vrf */ | |
3826 | bgpevpn_link_to_l3vni(vpn); | |
3827 | ||
d62a17ae | 3828 | QOBJ_REG(vpn, bgpevpn); |
3829 | return vpn; | |
128ea8ab | 3830 | } |
3831 | ||
3832 | /* | |
3833 | * Free a given VPN - called in multiple scenarios such as zebra | |
3834 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
3835 | * This just frees appropriate memory, caller should have taken other | |
3836 | * needed actions. | |
3837 | */ | |
d62a17ae | 3838 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3839 | { |
6a8657d0 | 3840 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 3841 | bgp_table_unlock(vpn->route_table); |
3842 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
3843 | list_delete_and_null(&vpn->import_rtl); |
3844 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 3845 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 3846 | hash_release(bgp->vnihash, vpn); |
3847 | QOBJ_UNREG(vpn); | |
3848 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 3849 | } |
3850 | ||
3851 | /* | |
3852 | * Import route into matching VNI(s). | |
3853 | */ | |
d62a17ae | 3854 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3855 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 3856 | { |
d62a17ae | 3857 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 3858 | } |
3859 | ||
3860 | /* | |
3861 | * Unimport route from matching VNI(s). | |
3862 | */ | |
d62a17ae | 3863 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3864 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 3865 | { |
d62a17ae | 3866 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 3867 | } |
3868 | ||
db0e1937 MK |
3869 | /* filter routes which have martian next hops */ |
3870 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
3871 | { | |
0291c246 MK |
3872 | afi_t afi; |
3873 | safi_t safi; | |
3874 | struct bgp_node *rd_rn, *rn; | |
3875 | struct bgp_table *table; | |
3876 | struct bgp_info *ri; | |
db0e1937 MK |
3877 | |
3878 | afi = AFI_L2VPN; | |
3879 | safi = SAFI_EVPN; | |
3880 | ||
3881 | /* Walk entire global routing table and evaluate routes which could be | |
3882 | * imported into this VPN. Note that we cannot just look at the routes | |
3883 | * for the VNI's RD - | |
3884 | * remote routes applicable for this VNI could have any RD. | |
3885 | */ | |
3886 | /* EVPN routes are a 2-level table. */ | |
3887 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3888 | rd_rn = bgp_route_next(rd_rn)) { | |
3889 | table = (struct bgp_table *)(rd_rn->info); | |
3890 | if (!table) | |
3891 | continue; | |
3892 | ||
3893 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3894 | ||
3895 | for (ri = rn->info; ri; ri = ri->next) { | |
3896 | ||
3897 | /* Consider "valid" remote routes applicable for | |
3898 | * this VNI. */ | |
3899 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
3900 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
3901 | continue; | |
3902 | ||
60466a63 | 3903 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
3904 | |
3905 | char attr_str[BUFSIZ]; | |
3906 | char pbuf[PREFIX_STRLEN]; | |
3907 | ||
3908 | bgp_dump_attr(ri->attr, attr_str, | |
3909 | BUFSIZ); | |
3910 | ||
3911 | if (bgp_debug_update(ri->peer, &rn->p, | |
3912 | NULL, 1)) | |
3913 | zlog_debug( | |
b682f6de | 3914 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
3915 | bgp->vrf_id, |
3916 | prefix2str( | |
60466a63 | 3917 | &rn->p, pbuf, |
db0e1937 MK |
3918 | sizeof(pbuf)), |
3919 | attr_str); | |
3920 | ||
3921 | bgp_evpn_unimport_route(bgp, afi, safi, | |
3922 | &rn->p, ri); | |
3923 | ||
60466a63 QY |
3924 | bgp_rib_remove(rn, ri, ri->peer, afi, |
3925 | safi); | |
db0e1937 | 3926 | } |
db0e1937 MK |
3927 | } |
3928 | } | |
3929 | } | |
3930 | ||
3931 | return 0; | |
3932 | } | |
3933 | ||
128ea8ab | 3934 | /* |
3935 | * Handle del of a local MACIP. | |
3936 | */ | |
d62a17ae | 3937 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
3938 | struct ipaddr *ip) | |
128ea8ab | 3939 | { |
d62a17ae | 3940 | struct bgpevpn *vpn; |
3941 | struct prefix_evpn p; | |
128ea8ab | 3942 | |
d62a17ae | 3943 | if (!bgp->vnihash) { |
3944 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
3945 | return -1; | |
3946 | } | |
128ea8ab | 3947 | |
d62a17ae | 3948 | /* Lookup VNI hash - should exist. */ |
3949 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3950 | if (!vpn || !is_vni_live(vpn)) { | |
3951 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
3952 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
3953 | return -1; | |
3954 | } | |
128ea8ab | 3955 | |
d62a17ae | 3956 | /* Remove EVPN type-2 route and schedule for processing. */ |
3957 | build_evpn_type2_prefix(&p, mac, ip); | |
3958 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 3959 | |
d62a17ae | 3960 | return 0; |
128ea8ab | 3961 | } |
3962 | ||
3963 | /* | |
3964 | * Handle add of a local MACIP. | |
3965 | */ | |
d62a17ae | 3966 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
1a98c087 | 3967 | struct ipaddr *ip, u_char flags) |
128ea8ab | 3968 | { |
d62a17ae | 3969 | struct bgpevpn *vpn; |
3970 | struct prefix_evpn p; | |
128ea8ab | 3971 | |
d62a17ae | 3972 | if (!bgp->vnihash) { |
3973 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
3974 | return -1; | |
3975 | } | |
128ea8ab | 3976 | |
d62a17ae | 3977 | /* Lookup VNI hash - should exist. */ |
3978 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3979 | if (!vpn || !is_vni_live(vpn)) { | |
3980 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
3981 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
3982 | return -1; | |
3983 | } | |
128ea8ab | 3984 | |
d62a17ae | 3985 | /* Create EVPN type-2 route and schedule for processing. */ |
3986 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 3987 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 3988 | char buf[ETHER_ADDR_STRLEN]; |
3989 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 3990 | |
d62a17ae | 3991 | zlog_err( |
b34fd35d | 3992 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s", |
1a98c087 | 3993 | bgp->vrf_id, vpn->vni, |
b34fd35d | 3994 | CHECK_FLAG(flags, ZEBRA_MAC_TYPE_STICKY) ? "sticky gateway" |
1a98c087 | 3995 | : "", |
d62a17ae | 3996 | prefix_mac2str(mac, buf, sizeof(buf)), |
3997 | ipaddr2str(ip, buf2, sizeof(buf2))); | |
3998 | return -1; | |
3999 | } | |
128ea8ab | 4000 | |
d62a17ae | 4001 | return 0; |
128ea8ab | 4002 | } |
4003 | ||
6a8657d0 MK |
4004 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
4005 | struct bgp *bgp_vrf) | |
4006 | { | |
4007 | struct bgpevpn *vpn = NULL; | |
4008 | struct bgp *bgp_def = NULL; | |
4009 | ||
4010 | bgp_def = bgp_get_default(); | |
4011 | assert(bgp_def); | |
4012 | ||
4013 | vpn = (struct bgpevpn *)backet->data; | |
4014 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
4015 | bgpevpn_link_to_l3vni(vpn); | |
4016 | } | |
4017 | ||
fe1dc5a3 MK |
4018 | int bgp_evpn_local_l3vni_add(vni_t l3vni, |
4019 | vrf_id_t vrf_id, | |
b67a60d2 | 4020 | struct ethaddr *rmac, |
4021 | struct in_addr originator_ip) | |
fe1dc5a3 MK |
4022 | { |
4023 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
4024 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
4025 | struct listnode *node = NULL; |
4026 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
4027 | as_t as = 0; |
4028 | ||
4029 | /* get the default instamce - required to get the AS number for VRF | |
4030 | * auto-creation*/ | |
4031 | bgp_def = bgp_get_default(); | |
4032 | if (!bgp_def) { | |
4033 | zlog_err("Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
4034 | l3vni); | |
4035 | return -1; | |
4036 | } | |
4037 | as = bgp_def->as; | |
4038 | ||
4039 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 4040 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
4041 | if (!bgp_vrf) { |
4042 | ||
4043 | int ret = 0; | |
4044 | ||
4045 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
4046 | BGP_INSTANCE_TYPE_VRF); | |
4047 | switch (ret) { | |
4048 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
4049 | zlog_err("'bgp multiple-instance' not present\n"); | |
4050 | return -1; | |
4051 | case BGP_ERR_AS_MISMATCH: | |
4052 | zlog_err("BGP is already running; AS is %u\n", as); | |
4053 | return -1; | |
4054 | case BGP_ERR_INSTANCE_MISMATCH: | |
4055 | zlog_err("BGP instance name and AS number mismatch\n"); | |
4056 | return -1; | |
4057 | } | |
4058 | ||
4059 | /* mark as auto created */ | |
4060 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
4061 | } | |
4062 | ||
4063 | /* associate with l3vni */ | |
4064 | bgp_vrf->l3vni = l3vni; | |
4065 | ||
4066 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
4067 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
4068 | ||
b67a60d2 | 4069 | /* set the originator ip */ |
4070 | bgp_vrf->originator_ip = originator_ip; | |
4071 | ||
c581d8b0 MK |
4072 | /* auto derive RD/RT */ |
4073 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4074 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4075 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
4076 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 4077 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 4078 | |
6a8657d0 MK |
4079 | /* link all corresponding l2vnis */ |
4080 | hash_iterate(bgp_def->vnihash, | |
4081 | (void (*)(struct hash_backet *, void *)) | |
4082 | link_l2vni_hash_to_l3vni, | |
4083 | bgp_vrf); | |
4084 | ||
f1f8b53c MK |
4085 | /* updates all corresponding local mac-ip routes */ |
4086 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
4087 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 4088 | |
06d2e8f3 MK |
4089 | /* advertise type-5 routes if needed */ |
4090 | update_advertise_vrf_routes(bgp_vrf); | |
4091 | ||
5ba238b7 MK |
4092 | /* install all remote routes belonging to this l3vni into correspondng |
4093 | * vrf */ | |
4094 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
4095 | |
4096 | return 0; | |
4097 | } | |
4098 | ||
4099 | int bgp_evpn_local_l3vni_del(vni_t l3vni, | |
4100 | vrf_id_t vrf_id) | |
4101 | { | |
4102 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
4103 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
4104 | struct listnode *node = NULL; | |
4105 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
4106 | |
4107 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
4108 | if (!bgp_vrf) { | |
4109 | zlog_err("Cannot process L3VNI %u Del - Could not find BGP instance", | |
4110 | l3vni); | |
4111 | return -1; | |
4112 | } | |
4113 | ||
f1f8b53c MK |
4114 | bgp_def = bgp_get_default(); |
4115 | if (!bgp_def) { | |
4116 | zlog_err("Cannot process L3VNI %u Del - Could not find default BGP instance", | |
4117 | l3vni); | |
4118 | return -1; | |
4119 | } | |
4120 | ||
1eb88002 MK |
4121 | /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will |
4122 | * take care of uninstalling the routes from zebra */ | |
4123 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
4124 | uninstall_routes_for_vrf(bgp_vrf); | |
5ba238b7 | 4125 | |
06d2e8f3 MK |
4126 | /* delete/withdraw all type-5 routes */ |
4127 | delete_withdraw_vrf_routes(bgp_vrf); | |
4128 | ||
fe1dc5a3 MK |
4129 | /* remove the l3vni from vrf instance */ |
4130 | bgp_vrf->l3vni = 0; | |
4131 | ||
4132 | /* remove the Rmac from the BGP vrf */ | |
4133 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
4134 | ||
c581d8b0 | 4135 | /* delete RD/RT */ |
23a06e11 | 4136 | if (bgp_vrf->vrf_import_rtl && !list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 4137 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 4138 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 MK |
4139 | } |
4140 | if (bgp_vrf->vrf_export_rtl && !list_isempty(bgp_vrf->vrf_export_rtl)) { | |
5ba238b7 | 4141 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 4142 | } |
fe1dc5a3 | 4143 | |
f1f8b53c MK |
4144 | /* update all corresponding local mac-ip routes */ |
4145 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
4146 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 4147 | |
fe1dc5a3 MK |
4148 | |
4149 | /* Delete the instance if it was autocreated */ | |
4150 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
4151 | bgp_delete(bgp_vrf); | |
4152 | ||
4153 | return 0; | |
4154 | } | |
4155 | ||
128ea8ab | 4156 | /* |
4157 | * Handle del of a local VNI. | |
4158 | */ | |
d62a17ae | 4159 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 4160 | { |
d62a17ae | 4161 | struct bgpevpn *vpn; |
128ea8ab | 4162 | |
d62a17ae | 4163 | if (!bgp->vnihash) { |
4164 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4165 | return -1; | |
4166 | } | |
128ea8ab | 4167 | |
d62a17ae | 4168 | /* Locate VNI hash */ |
4169 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4170 | if (!vpn) { | |
4171 | zlog_warn("%u: VNI hash entry for VNI %u not found at DEL", | |
4172 | bgp->vrf_id, vni); | |
4173 | return 0; | |
4174 | } | |
128ea8ab | 4175 | |
d62a17ae | 4176 | /* Remove all local EVPN routes and schedule for processing (to |
4177 | * withdraw from peers). | |
4178 | */ | |
4179 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4180 | |
db0e1937 MK |
4181 | /* |
4182 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
4183 | */ | |
4184 | bgp_tip_del(bgp, &vpn->originator_ip); | |
4185 | ||
d62a17ae | 4186 | /* Clear "live" flag and see if hash needs to be freed. */ |
4187 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4188 | if (!is_vni_configured(vpn)) | |
4189 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4190 | |
d62a17ae | 4191 | return 0; |
128ea8ab | 4192 | } |
4193 | ||
4194 | /* | |
4195 | * Handle add (or update) of a local VNI. The only VNI change we care | |
4196 | * about is change to local-tunnel-ip. | |
4197 | */ | |
d62a17ae | 4198 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4199 | struct in_addr originator_ip, |
4200 | vrf_id_t tenant_vrf_id) | |
d62a17ae | 4201 | { |
4202 | struct bgpevpn *vpn; | |
4203 | struct prefix_evpn p; | |
4204 | ||
4205 | if (!bgp->vnihash) { | |
4206 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4207 | return -1; | |
4208 | } | |
4209 | ||
4210 | /* Lookup VNI. If present and no change, exit. */ | |
4211 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 4212 | if (vpn) { |
29c53922 MK |
4213 | |
4214 | /* update tenant_vrf_id if required */ | |
6a8657d0 MK |
4215 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
4216 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 4217 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 4218 | bgpevpn_link_to_l3vni(vpn); |
e92bd2a2 MK |
4219 | |
4220 | /* update all routes with new export RT for VRFs */ | |
4221 | update_routes_for_vni(bgp, vpn); | |
6a8657d0 | 4222 | } |
29c53922 | 4223 | |
2f1ac16a MK |
4224 | if (is_vni_live(vpn) |
4225 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
d62a17ae | 4226 | /* Probably some other param has changed that we don't |
4227 | * care about. */ | |
4228 | return 0; | |
4229 | ||
4230 | /* Local tunnel endpoint IP address has changed */ | |
ddd16ed5 | 4231 | handle_tunnel_ip_change(bgp, vpn, originator_ip); |
d62a17ae | 4232 | } |
4233 | ||
4234 | /* Create or update as appropriate. */ | |
4235 | if (!vpn) { | |
29c53922 | 4236 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 4237 | if (!vpn) { |
4238 | zlog_err( | |
4239 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
4240 | bgp->vrf_id, vni); | |
4241 | return -1; | |
4242 | } | |
4243 | } | |
4244 | ||
db0e1937 | 4245 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
4246 | if (is_vni_live(vpn)) |
4247 | return 0; | |
4248 | ||
d62a17ae | 4249 | /* Mark as "live" */ |
4250 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4251 | ||
db0e1937 MK |
4252 | /* tunnel is now active, add tunnel-ip to db */ |
4253 | bgp_tip_add(bgp, &originator_ip); | |
4254 | ||
4255 | /* filter routes as nexthop database has changed */ | |
4256 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
4257 | ||
d62a17ae | 4258 | /* Create EVPN type-3 route and schedule for processing. */ |
4259 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4260 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
4261 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
4262 | bgp->vrf_id, vni); | |
4263 | return -1; | |
4264 | } | |
4265 | ||
4266 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
4267 | * VNI, | |
4268 | * install them. | |
4269 | */ | |
4270 | install_routes_for_vni(bgp, vpn); | |
4271 | ||
d7d97010 MK |
4272 | /* If we are advertising gateway mac-ip |
4273 | It needs to be conveyed again to zebra */ | |
4274 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
4275 | ||
d62a17ae | 4276 | return 0; |
b18825eb | 4277 | } |
14c1a7bf | 4278 | |
7724c0a1 | 4279 | /* |
4280 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
4281 | * EVPN routes from peers. | |
4282 | */ | |
d62a17ae | 4283 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 4284 | { |
9d303b37 DL |
4285 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4286 | void *))cleanup_vni_on_disable, | |
4287 | bgp); | |
7724c0a1 | 4288 | } |
4289 | ||
14c1a7bf | 4290 | /* |
4291 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
4292 | * BGP instance (default) is being freed. | |
4293 | */ | |
d62a17ae | 4294 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 4295 | { |
d62a17ae | 4296 | if (bgp->vnihash) |
9d303b37 DL |
4297 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4298 | void *))free_vni_entry, | |
4299 | bgp); | |
d62a17ae | 4300 | if (bgp->import_rt_hash) |
4301 | hash_free(bgp->import_rt_hash); | |
4302 | bgp->import_rt_hash = NULL; | |
10ebe1ab MK |
4303 | if (bgp->vrf_import_rt_hash) |
4304 | hash_free(bgp->vrf_import_rt_hash); | |
4305 | bgp->vrf_import_rt_hash = NULL; | |
d62a17ae | 4306 | if (bgp->vnihash) |
4307 | hash_free(bgp->vnihash); | |
4308 | bgp->vnihash = NULL; | |
c581d8b0 | 4309 | if (bgp->vrf_import_rtl) |
bb7a24ab | 4310 | list_delete_and_null(&bgp->vrf_import_rtl); |
c581d8b0 MK |
4311 | bgp->vrf_import_rtl = NULL; |
4312 | if (bgp->vrf_export_rtl) | |
bb7a24ab | 4313 | list_delete_and_null(&bgp->vrf_export_rtl); |
c581d8b0 | 4314 | bgp->vrf_export_rtl = NULL; |
6a8657d0 | 4315 | if (bgp->l2vnis) |
bb7a24ab | 4316 | list_delete_and_null(&bgp->l2vnis); |
6a8657d0 | 4317 | bgp->l2vnis = NULL; |
676f83b9 | 4318 | bf_release_index(bm->rd_idspace, bgp->vrf_rd_id); |
14c1a7bf | 4319 | } |
4320 | ||
4321 | /* | |
4322 | * Initialization for EVPN | |
4323 | * Create | |
4324 | * VNI hash table | |
4325 | * hash for RT to VNI | |
676f83b9 | 4326 | * assign a unique rd id for auto derivation of vrf_prd |
14c1a7bf | 4327 | */ |
d62a17ae | 4328 | void bgp_evpn_init(struct bgp *bgp) |
4329 | { | |
4330 | bgp->vnihash = | |
4331 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
4332 | bgp->import_rt_hash = | |
4333 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
4334 | "BGP Import RT Hash"); | |
10ebe1ab MK |
4335 | bgp->vrf_import_rt_hash = |
4336 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
4337 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
4338 | bgp->vrf_import_rtl = list_new(); |
4339 | bgp->vrf_import_rtl->cmp = | |
4340 | (int (*)(void *, void *))evpn_route_target_cmp; | |
4341 | ||
4342 | bgp->vrf_export_rtl = list_new(); | |
4343 | bgp->vrf_export_rtl->cmp = | |
4344 | (int (*)(void *, void *))evpn_route_target_cmp; | |
6a8657d0 MK |
4345 | bgp->l2vnis = list_new(); |
4346 | bgp->l2vnis->cmp = | |
4347 | (int (*)(void *, void *))vni_hash_cmp; | |
676f83b9 | 4348 | bf_assign_index(bm->rd_idspace, bgp->vrf_rd_id); |
4349 | ||
14c1a7bf | 4350 | } |
10ebe1ab MK |
4351 | |
4352 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
4353 | { | |
4354 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4355 | } |