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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
14454c9f | 46 | #include "bgpd/bgp_errors.h" |
128ea8ab | 47 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 50 | |
51 | /* | |
52 | * Definitions and external declarations. | |
53 | */ | |
54 | extern struct zclient *zclient; | |
55 | ||
56 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 57 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 58 | |
59 | ||
60 | /* | |
61 | * Static function declarations | |
62 | */ | |
4b7e6066 | 63 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 64 | struct bgp_node *rn, |
4b7e6066 | 65 | struct bgp_path_info **ri); |
d62a17ae | 66 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
14c1a7bf | 67 | |
68 | /* | |
69 | * Private functions. | |
70 | */ | |
71 | ||
50f74cf1 | 72 | /* compare two IPV4 VTEP IPs */ |
73 | static int evpn_vtep_ip_cmp(const void *p1, const void *p2) | |
74 | { | |
75 | const struct in_addr *ip1 = p1; | |
76 | const struct in_addr *ip2 = p2; | |
77 | ||
78 | if (!ip1 && !ip2) | |
79 | return 1; | |
80 | if (!ip1 || !ip2) | |
81 | return 0; | |
82 | return (ip1->s_addr == ip2->s_addr); | |
83 | } | |
84 | ||
85 | /* | |
86 | * Make hash key for ESI. | |
87 | */ | |
88 | static unsigned int esi_hash_keymake(void *p) | |
89 | { | |
90 | struct evpnes *pes = p; | |
91 | const void *pnt = (void *)pes->esi.val; | |
92 | ||
93 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
94 | } | |
95 | ||
96 | /* | |
97 | * Compare two ESIs. | |
98 | */ | |
99 | static int esi_cmp(const void *p1, const void *p2) | |
100 | { | |
101 | const struct evpnes *pes1 = p1; | |
102 | const struct evpnes *pes2 = p2; | |
103 | ||
104 | if (pes1 == NULL && pes2 == NULL) | |
105 | return 1; | |
106 | ||
107 | if (pes1 == NULL || pes2 == NULL) | |
108 | return 0; | |
109 | ||
110 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
111 | } | |
112 | ||
14c1a7bf | 113 | /* |
114 | * Make vni hash key. | |
115 | */ | |
d62a17ae | 116 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 117 | { |
d62a17ae | 118 | struct bgpevpn *vpn = p; |
119 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 120 | } |
121 | ||
122 | /* | |
123 | * Comparison function for vni hash | |
124 | */ | |
d62a17ae | 125 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 126 | { |
d62a17ae | 127 | const struct bgpevpn *vpn1 = p1; |
128 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 129 | |
d62a17ae | 130 | if (!vpn1 && !vpn2) |
131 | return 1; | |
132 | if (!vpn1 || !vpn2) | |
133 | return 0; | |
134 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 135 | } |
136 | ||
10ebe1ab MK |
137 | /* |
138 | * Make vrf import route target hash key. | |
139 | */ | |
140 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
141 | { | |
142 | struct vrf_irt_node *irt = p; | |
143 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
144 | |
145 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
146 | } |
147 | ||
148 | /* | |
149 | * Comparison function for vrf import rt hash | |
150 | */ | |
151 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
152 | { | |
153 | const struct vrf_irt_node *irt1 = p1; | |
154 | const struct vrf_irt_node *irt2 = p2; | |
155 | ||
156 | if (irt1 == NULL && irt2 == NULL) | |
157 | return 1; | |
158 | ||
159 | if (irt1 == NULL || irt2 == NULL) | |
160 | return 0; | |
161 | ||
162 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Create a new vrf import_rt in default instance | |
167 | */ | |
168 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
169 | { | |
170 | struct bgp *bgp_def = NULL; | |
171 | struct vrf_irt_node *irt; | |
172 | ||
173 | bgp_def = bgp_get_default(); | |
174 | if (!bgp_def) { | |
e50f7cfd | 175 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 176 | "vrf import rt new - def instance not created yet"); |
10ebe1ab MK |
177 | return NULL; |
178 | } | |
179 | ||
180 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
181 | sizeof(struct vrf_irt_node)); | |
182 | if (!irt) | |
183 | return NULL; | |
184 | ||
185 | irt->rt = *rt; | |
186 | irt->vrfs = list_new(); | |
187 | ||
188 | /* Add to hash */ | |
189 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
190 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
191 | return NULL; | |
192 | } | |
193 | ||
194 | return irt; | |
195 | } | |
196 | ||
197 | /* | |
198 | * Free the vrf import rt node | |
199 | */ | |
200 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
201 | { | |
202 | struct bgp *bgp_def = NULL; | |
203 | ||
204 | bgp_def = bgp_get_default(); | |
205 | if (!bgp_def) { | |
e50f7cfd | 206 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 207 | "vrf import rt free - def instance not created yet"); |
10ebe1ab MK |
208 | return; |
209 | } | |
210 | ||
211 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
6a154c88 | 212 | list_delete(&irt->vrfs); |
10ebe1ab MK |
213 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
214 | } | |
215 | ||
216 | /* | |
217 | * Function to lookup Import RT node - used to map a RT to set of | |
218 | * VNIs importing routes with that RT. | |
219 | */ | |
220 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
221 | { | |
222 | struct bgp *bgp_def = NULL; | |
223 | struct vrf_irt_node *irt; | |
224 | struct vrf_irt_node tmp; | |
225 | ||
226 | bgp_def = bgp_get_default(); | |
227 | if (!bgp_def) { | |
1c50c1c0 QY |
228 | flog_err(EC_BGP_NO_DFLT, |
229 | "vrf import rt lookup - def instance not created yet"); | |
10ebe1ab MK |
230 | return NULL; |
231 | } | |
232 | ||
233 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
234 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
235 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
236 | return irt; | |
237 | } | |
238 | ||
239 | /* | |
240 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
241 | */ | |
996c9314 | 242 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
243 | { |
244 | struct listnode *node = NULL, *nnode = NULL; | |
245 | struct bgp *tmp_bgp_vrf = NULL; | |
246 | ||
247 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
248 | if (tmp_bgp_vrf == bgp_vrf) | |
249 | return 1; | |
250 | } | |
251 | return 0; | |
252 | } | |
253 | ||
14c1a7bf | 254 | /* |
255 | * Make import route target hash key. | |
256 | */ | |
d62a17ae | 257 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 258 | { |
d62a17ae | 259 | struct irt_node *irt = p; |
260 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
261 | |
262 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 263 | } |
264 | ||
265 | /* | |
266 | * Comparison function for import rt hash | |
267 | */ | |
d62a17ae | 268 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 269 | { |
d62a17ae | 270 | const struct irt_node *irt1 = p1; |
271 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 272 | |
d62a17ae | 273 | if (irt1 == NULL && irt2 == NULL) |
274 | return 1; | |
14c1a7bf | 275 | |
d62a17ae | 276 | if (irt1 == NULL || irt2 == NULL) |
277 | return 0; | |
14c1a7bf | 278 | |
d62a17ae | 279 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 280 | } |
281 | ||
7724c0a1 | 282 | /* |
128ea8ab | 283 | * Create a new import_rt |
284 | */ | |
d62a17ae | 285 | static struct irt_node *import_rt_new(struct bgp *bgp, |
286 | struct ecommunity_val *rt) | |
128ea8ab | 287 | { |
d62a17ae | 288 | struct irt_node *irt; |
128ea8ab | 289 | |
d62a17ae | 290 | if (!bgp) |
291 | return NULL; | |
128ea8ab | 292 | |
d62a17ae | 293 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
294 | if (!irt) | |
295 | return NULL; | |
128ea8ab | 296 | |
d62a17ae | 297 | irt->rt = *rt; |
298 | irt->vnis = list_new(); | |
128ea8ab | 299 | |
d62a17ae | 300 | /* Add to hash */ |
301 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
302 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
303 | return NULL; | |
304 | } | |
128ea8ab | 305 | |
d62a17ae | 306 | return irt; |
128ea8ab | 307 | } |
308 | ||
309 | /* | |
310 | * Free the import rt node | |
7724c0a1 | 311 | */ |
d62a17ae | 312 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 313 | { |
d62a17ae | 314 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 315 | list_delete(&irt->vnis); |
d62a17ae | 316 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 317 | } |
318 | ||
14c1a7bf | 319 | /* |
128ea8ab | 320 | * Function to lookup Import RT node - used to map a RT to set of |
321 | * VNIs importing routes with that RT. | |
322 | */ | |
d62a17ae | 323 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
324 | struct ecommunity_val *rt) | |
128ea8ab | 325 | { |
d62a17ae | 326 | struct irt_node *irt; |
327 | struct irt_node tmp; | |
128ea8ab | 328 | |
d62a17ae | 329 | memset(&tmp, 0, sizeof(struct irt_node)); |
330 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
331 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
332 | return irt; | |
128ea8ab | 333 | } |
334 | ||
335 | /* | |
336 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
337 | */ | |
d62a17ae | 338 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 339 | { |
d62a17ae | 340 | struct listnode *node, *nnode; |
341 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 342 | |
d62a17ae | 343 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
344 | if (tmp_vpn == vpn) | |
345 | return 1; | |
346 | } | |
128ea8ab | 347 | |
d62a17ae | 348 | return 0; |
128ea8ab | 349 | } |
350 | ||
351 | /* | |
352 | * Compare Route Targets. | |
353 | */ | |
d62a17ae | 354 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
355 | struct ecommunity *ecom2) | |
128ea8ab | 356 | { |
d62a17ae | 357 | if (ecom1 && !ecom2) |
358 | return -1; | |
128ea8ab | 359 | |
d62a17ae | 360 | if (!ecom1 && ecom2) |
361 | return 1; | |
128ea8ab | 362 | |
d62a17ae | 363 | if (!ecom1 && !ecom2) |
364 | return 0; | |
128ea8ab | 365 | |
d62a17ae | 366 | if (ecom1->str && !ecom2->str) |
367 | return -1; | |
128ea8ab | 368 | |
d62a17ae | 369 | if (!ecom1->str && ecom2->str) |
370 | return 1; | |
128ea8ab | 371 | |
d62a17ae | 372 | if (!ecom1->str && !ecom2->str) |
373 | return 0; | |
128ea8ab | 374 | |
d62a17ae | 375 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 376 | } |
377 | ||
987d8198 DS |
378 | static void evpn_xxport_delete_ecomm(void *val) |
379 | { | |
380 | struct ecommunity *ecomm = val; | |
381 | ecommunity_free(&ecomm); | |
382 | } | |
383 | ||
128ea8ab | 384 | /* |
385 | * Mask off global-admin field of specified extended community (RT), | |
386 | * just retain the local-admin field. | |
387 | */ | |
d62a17ae | 388 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
389 | struct ecommunity_val *src) | |
128ea8ab | 390 | { |
d7c0a89a | 391 | uint8_t type; |
128ea8ab | 392 | |
d62a17ae | 393 | type = src->val[0]; |
394 | dst->val[0] = 0; | |
395 | if (type == ECOMMUNITY_ENCODE_AS) { | |
396 | dst->val[2] = dst->val[3] = 0; | |
397 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
398 | || type == ECOMMUNITY_ENCODE_IP) { | |
399 | dst->val[2] = dst->val[3] = 0; | |
400 | dst->val[4] = dst->val[5] = 0; | |
401 | } | |
128ea8ab | 402 | } |
403 | ||
10ebe1ab MK |
404 | /* |
405 | * Map one RT to specified VRF. | |
406 | * bgp_vrf = BGP vrf instance | |
407 | */ | |
996c9314 | 408 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
409 | { |
410 | struct vrf_irt_node *irt = NULL; | |
411 | struct ecommunity_val eval_tmp; | |
412 | ||
413 | /* If using "automatic" RT, | |
414 | * we only care about the local-admin sub-field. | |
415 | * This is to facilitate using L3VNI(VRF-VNI) | |
416 | * as the RT for EBGP peering too. | |
417 | */ | |
418 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 419 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
420 | mask_ecom_global_admin(&eval_tmp, eval); |
421 | ||
422 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
423 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
424 | /* Already mapped. */ | |
425 | return; | |
10ebe1ab | 426 | |
e066d6d0 | 427 | if (!irt) |
10ebe1ab | 428 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
429 | |
430 | /* Add VRF to the list for this RT. */ | |
431 | listnode_add(irt->vrfs, bgp_vrf); | |
432 | } | |
433 | ||
434 | /* | |
435 | * Unmap specified VRF from specified RT. If there are no other | |
436 | * VRFs for this RT, then the RT hash is deleted. | |
437 | * bgp_vrf: BGP VRF specific instance | |
438 | */ | |
996c9314 | 439 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
440 | { |
441 | /* Delete VRF from list for this RT. */ | |
442 | listnode_delete(irt->vrfs, bgp_vrf); | |
443 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
444 | vrf_import_rt_free(irt); |
445 | } | |
446 | } | |
447 | ||
128ea8ab | 448 | /* |
449 | * Map one RT to specified VNI. | |
14c1a7bf | 450 | */ |
d62a17ae | 451 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
452 | struct ecommunity_val *eval) | |
128ea8ab | 453 | { |
d62a17ae | 454 | struct irt_node *irt; |
455 | struct ecommunity_val eval_tmp; | |
128ea8ab | 456 | |
d62a17ae | 457 | /* If using "automatic" RT, we only care about the local-admin |
458 | * sub-field. | |
459 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
460 | */ | |
461 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
462 | if (!is_import_rt_configured(vpn)) | |
463 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 464 | |
d62a17ae | 465 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 466 | if (irt) |
d62a17ae | 467 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
468 | /* Already mapped. */ | |
469 | return; | |
128ea8ab | 470 | |
d62a17ae | 471 | if (!irt) { |
472 | irt = import_rt_new(bgp, &eval_tmp); | |
473 | assert(irt); | |
474 | } | |
128ea8ab | 475 | |
d62a17ae | 476 | /* Add VNI to the hash list for this RT. */ |
477 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 478 | } |
479 | ||
480 | /* | |
481 | * Unmap specified VNI from specified RT. If there are no other | |
482 | * VNIs for this RT, then the RT hash is deleted. | |
483 | */ | |
d62a17ae | 484 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
485 | struct irt_node *irt) | |
14c1a7bf | 486 | { |
d62a17ae | 487 | /* Delete VNI from hash list for this RT. */ |
488 | listnode_delete(irt->vnis, vpn); | |
489 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 490 | import_rt_free(bgp, irt); |
491 | } | |
14c1a7bf | 492 | } |
493 | ||
128ea8ab | 494 | /* |
495 | * Create RT extended community automatically from passed information: | |
496 | * of the form AS:VNI. | |
497 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
498 | * the need is to get a RT value that will be unique across different | |
499 | * VNIs but the same across routers (in the same AS) for a particular | |
500 | * VNI. | |
501 | */ | |
c581d8b0 | 502 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 503 | { |
d62a17ae | 504 | struct ecommunity_val eval; |
505 | struct ecommunity *ecomadd; | |
128ea8ab | 506 | |
bf1061d8 VB |
507 | if (bgp->advertise_autort_rfc8365) |
508 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 509 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 510 | |
d62a17ae | 511 | ecomadd = ecommunity_new(); |
512 | ecommunity_add_val(ecomadd, &eval); | |
513 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 514 | } |
14c1a7bf | 515 | |
516 | /* | |
128ea8ab | 517 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
518 | * creation of a VNI. | |
519 | */ | |
d62a17ae | 520 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 521 | { |
d62a17ae | 522 | bgp_evpn_derive_auto_rd(bgp, vpn); |
523 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
524 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 525 | } |
526 | ||
1ec31309 | 527 | /* |
528 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
529 | */ | |
530 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
531 | { | |
532 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
533 | return; | |
534 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
535 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
536 | } | |
537 | ||
128ea8ab | 538 | /* |
539 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 540 | */ |
d62a17ae | 541 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
542 | struct prefix_evpn *p, | |
543 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 544 | uint8_t flags, uint32_t seq) |
d62a17ae | 545 | { |
546 | struct stream *s; | |
547 | int ipa_len; | |
548 | char buf1[ETHER_ADDR_STRLEN]; | |
549 | char buf2[INET6_ADDRSTRLEN]; | |
550 | char buf3[INET6_ADDRSTRLEN]; | |
551 | ||
552 | /* Check socket. */ | |
553 | if (!zclient || zclient->sock < 0) | |
554 | return 0; | |
555 | ||
556 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
557 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
558 | return 0; | |
559 | ||
560 | s = zclient->obuf; | |
561 | stream_reset(s); | |
562 | ||
996c9314 LB |
563 | zclient_create_header( |
564 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
565 | bgp->vrf_id); | |
d62a17ae | 566 | stream_putl(s, vpn->vni); |
3714a385 | 567 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 568 | /* IP address length and IP address, if any. */ |
3714a385 | 569 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 570 | stream_putl(s, 0); |
571 | else { | |
3714a385 | 572 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 573 | : IPV6_MAX_BYTELEN; |
574 | stream_putl(s, ipa_len); | |
3714a385 | 575 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 576 | } |
577 | stream_put_in_addr(s, &remote_vtep_ip); | |
578 | ||
ead40654 | 579 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 580 | /* Also TX the sequence number of the best route. */ |
581 | if (add) { | |
ead40654 | 582 | stream_putc(s, flags); |
f07e1c99 | 583 | stream_putl(s, seq); |
584 | } | |
d62a17ae | 585 | |
586 | stream_putw_at(s, 0, stream_get_endp(s)); | |
587 | ||
588 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 589 | zlog_debug( |
f07e1c99 | 590 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 591 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 592 | prefix_mac2str(&p->prefix.macip_addr.mac, |
593 | buf1, sizeof(buf1)), | |
594 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 595 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
596 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
597 | sizeof(buf2))); | |
d62a17ae | 598 | |
599 | return zclient_send_message(zclient); | |
7ef5a232 | 600 | } |
b18825eb | 601 | |
128ea8ab | 602 | /* |
603 | * Add (update) or delete remote VTEP from zebra. | |
604 | */ | |
d62a17ae | 605 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
606 | struct prefix_evpn *p, int add) | |
128ea8ab | 607 | { |
d62a17ae | 608 | struct stream *s; |
128ea8ab | 609 | |
d62a17ae | 610 | /* Check socket. */ |
611 | if (!zclient || zclient->sock < 0) | |
612 | return 0; | |
128ea8ab | 613 | |
d62a17ae | 614 | /* Don't try to register if Zebra doesn't know of this instance. */ |
615 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
616 | return 0; | |
128ea8ab | 617 | |
d62a17ae | 618 | s = zclient->obuf; |
619 | stream_reset(s); | |
128ea8ab | 620 | |
996c9314 LB |
621 | zclient_create_header( |
622 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
623 | bgp->vrf_id); | |
d62a17ae | 624 | stream_putl(s, vpn->vni); |
3714a385 | 625 | if (is_evpn_prefix_ipaddr_v4(p)) |
626 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
627 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 628 | flog_err( |
e50f7cfd | 629 | EC_BGP_VTEP_INVALID, |
d62a17ae | 630 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
631 | add ? "ADD" : "DEL", vpn->vni); | |
632 | return -1; | |
633 | } | |
128ea8ab | 634 | |
d62a17ae | 635 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 636 | |
d62a17ae | 637 | if (bgp_debug_zebra(NULL)) |
638 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
639 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 640 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 641 | |
d62a17ae | 642 | return zclient_send_message(zclient); |
128ea8ab | 643 | } |
644 | ||
50f74cf1 | 645 | /* |
646 | * Build extended community for EVPN ES (type-4) route | |
647 | */ | |
648 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
649 | struct attr *attr) | |
650 | { | |
651 | struct ecommunity ecom_encap; | |
652 | struct ecommunity ecom_es_rt; | |
653 | struct ecommunity_val eval; | |
654 | struct ecommunity_val eval_es_rt; | |
655 | bgp_encap_types tnl_type; | |
656 | struct ethaddr mac; | |
657 | ||
658 | /* Encap */ | |
659 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
660 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
661 | encode_encap_extcomm(tnl_type, &eval); | |
662 | ecom_encap.size = 1; | |
663 | ecom_encap.val = (uint8_t *)eval.val; | |
664 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
665 | ||
666 | /* ES import RT */ | |
667 | memset(&mac, 0, sizeof(struct ethaddr)); | |
668 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
669 | es_get_system_mac(&es->esi, &mac); | |
670 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
671 | ecom_es_rt.size = 1; | |
672 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
673 | attr->ecommunity = | |
674 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
675 | ||
676 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
677 | } | |
678 | ||
342dd0c6 | 679 | /* |
680 | * Build extended communities for EVPN prefix route. | |
681 | */ | |
682 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
683 | struct attr *attr) | |
684 | { | |
685 | struct ecommunity ecom_encap; | |
686 | struct ecommunity ecom_rmac; | |
687 | struct ecommunity_val eval; | |
688 | struct ecommunity_val eval_rmac; | |
689 | bgp_encap_types tnl_type; | |
690 | struct listnode *node, *nnode; | |
691 | struct ecommunity *ecom; | |
692 | struct list *vrf_export_rtl = NULL; | |
693 | ||
694 | /* Encap */ | |
695 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
696 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
697 | encode_encap_extcomm(tnl_type, &eval); | |
698 | ecom_encap.size = 1; | |
d7c0a89a | 699 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 700 | |
701 | /* Add Encap */ | |
702 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
703 | ||
704 | /* Add the export RTs for L3VNI/VRF */ | |
705 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
706 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
707 | attr->ecommunity = | |
708 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 709 | |
710 | /* add the router mac extended community */ | |
711 | if (!is_zero_mac(&attr->rmac)) { | |
712 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
713 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
714 | ecom_rmac.size = 1; | |
715 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
716 | attr->ecommunity = |
717 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 718 | } |
719 | ||
720 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
721 | } | |
722 | ||
128ea8ab | 723 | /* |
1ec31309 | 724 | * Build extended communities for EVPN route. |
725 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
726 | * and ENCAP extended communities are applicable for all routes. | |
727 | * The default gateway extended community and MAC mobility (sticky) extended | |
728 | * community are added as needed based on passed settings - only for type-2 | |
729 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
730 | * added, if present, based on passed settings - only for non-link-local | |
731 | * type-2 routes. | |
128ea8ab | 732 | */ |
7ec156a9 | 733 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 734 | int add_l3_ecomm) |
128ea8ab | 735 | { |
d62a17ae | 736 | struct ecommunity ecom_encap; |
737 | struct ecommunity ecom_sticky; | |
ead40654 | 738 | struct ecommunity ecom_default_gw; |
bc59a672 | 739 | struct ecommunity ecom_rmac; |
68e33151 | 740 | struct ecommunity ecom_na; |
d62a17ae | 741 | struct ecommunity_val eval; |
742 | struct ecommunity_val eval_sticky; | |
ead40654 | 743 | struct ecommunity_val eval_default_gw; |
bc59a672 | 744 | struct ecommunity_val eval_rmac; |
68e33151 CS |
745 | struct ecommunity_val eval_na; |
746 | ||
d62a17ae | 747 | bgp_encap_types tnl_type; |
748 | struct listnode *node, *nnode; | |
749 | struct ecommunity *ecom; | |
d7c0a89a | 750 | uint32_t seqnum; |
7a3e76f1 | 751 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 752 | |
d62a17ae | 753 | /* Encap */ |
754 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
755 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
756 | encode_encap_extcomm(tnl_type, &eval); | |
757 | ecom_encap.size = 1; | |
d7c0a89a | 758 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 759 | |
d62a17ae | 760 | /* Add Encap */ |
761 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 762 | |
7a3e76f1 | 763 | /* Add the export RTs for L2VNI */ |
d62a17ae | 764 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
765 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 766 | |
1ec31309 | 767 | /* Add the export RTs for L3VNI if told to - caller determines |
768 | * when this should be done. | |
523cafc4 | 769 | */ |
1ec31309 | 770 | if (add_l3_ecomm) { |
7ec156a9 MK |
771 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
772 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
773 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
774 | ecom)) | |
996c9314 LB |
775 | attr->ecommunity = ecommunity_merge( |
776 | attr->ecommunity, ecom); | |
7ec156a9 | 777 | } |
f1f8b53c | 778 | } |
7a3e76f1 | 779 | |
1ec31309 | 780 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 781 | if (attr->sticky) { |
782 | seqnum = 0; | |
783 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
784 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
785 | ecom_sticky.size = 1; | |
d7c0a89a | 786 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 787 | attr->ecommunity = |
788 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
789 | } | |
c85c03c7 | 790 | |
1ec31309 | 791 | /* Add RMAC, if told to. */ |
792 | if (add_l3_ecomm) { | |
bc59a672 MK |
793 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
794 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
795 | ecom_rmac.size = 1; | |
796 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
797 | attr->ecommunity = |
798 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
799 | } |
800 | ||
1ec31309 | 801 | /* Add default gateway, if needed. */ |
ead40654 MK |
802 | if (attr->default_gw) { |
803 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
804 | encode_default_gw_extcomm(&eval_default_gw); | |
805 | ecom_default_gw.size = 1; | |
806 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
807 | attr->ecommunity = |
808 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
809 | } |
810 | ||
68e33151 CS |
811 | if (attr->router_flag) { |
812 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
813 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
814 | ecom_na.size = 1; | |
815 | ecom_na.val = (uint8_t *)eval_na.val; | |
816 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
817 | &ecom_na); | |
818 | } | |
819 | ||
d62a17ae | 820 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 821 | } |
822 | ||
823 | /* | |
824 | * Add MAC mobility extended community to attribute. | |
825 | */ | |
d7c0a89a | 826 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 827 | { |
828 | struct ecommunity ecom_tmp; | |
829 | struct ecommunity_val eval; | |
d7c0a89a | 830 | uint8_t *ecom_val_ptr; |
d62a17ae | 831 | int i; |
d7c0a89a | 832 | uint8_t *pnt; |
d62a17ae | 833 | int type = 0; |
834 | int sub_type = 0; | |
835 | ||
836 | /* Build MM */ | |
837 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
838 | ||
839 | /* Find current MM ecommunity */ | |
421bb26a | 840 | ecom_val_ptr = NULL; |
d62a17ae | 841 | |
842 | if (attr->ecommunity) { | |
843 | for (i = 0; i < attr->ecommunity->size; i++) { | |
844 | pnt = attr->ecommunity->val + (i * 8); | |
845 | type = *pnt++; | |
846 | sub_type = *pnt++; | |
847 | ||
848 | if (type == ECOMMUNITY_ENCODE_EVPN | |
849 | && sub_type | |
850 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
851 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
852 | + (i * 8)); | |
d62a17ae | 853 | break; |
854 | } | |
855 | } | |
856 | } | |
857 | ||
858 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
859 | if (ecom_val_ptr) { |
860 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 861 | } |
862 | /* Add MM to existing */ | |
863 | else { | |
864 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
865 | ecom_tmp.size = 1; | |
d7c0a89a | 866 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 867 | |
f9a78910 DS |
868 | if (attr->ecommunity) |
869 | attr->ecommunity = | |
870 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
871 | else | |
872 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 873 | } |
128ea8ab | 874 | } |
875 | ||
876 | /* Install EVPN route into zebra. */ | |
d62a17ae | 877 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
878 | struct prefix_evpn *p, | |
f07e1c99 | 879 | struct in_addr remote_vtep_ip, uint8_t flags, |
880 | uint32_t seq) | |
128ea8ab | 881 | { |
d62a17ae | 882 | int ret; |
128ea8ab | 883 | |
d62a17ae | 884 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
885 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 886 | 1, flags, seq); |
d62a17ae | 887 | else |
888 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 889 | |
d62a17ae | 890 | return ret; |
128ea8ab | 891 | } |
892 | ||
893 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 894 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
895 | struct prefix_evpn *p, | |
896 | struct in_addr remote_vtep_ip) | |
128ea8ab | 897 | { |
d62a17ae | 898 | int ret; |
128ea8ab | 899 | |
d62a17ae | 900 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
901 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 902 | 0, 0, 0); |
d62a17ae | 903 | else |
904 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 905 | |
d62a17ae | 906 | return ret; |
128ea8ab | 907 | } |
908 | ||
909 | /* | |
910 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
911 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
912 | * from peers. | |
913 | */ | |
d62a17ae | 914 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
915 | struct bgp_node *rn, | |
4b7e6066 | 916 | struct bgp_path_info *old_local) |
128ea8ab | 917 | { |
d62a17ae | 918 | struct bgp_node *global_rn; |
4b7e6066 | 919 | struct bgp_path_info *ri; |
d62a17ae | 920 | afi_t afi = AFI_L2VPN; |
921 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 922 | |
d62a17ae | 923 | /* Locate route node in the global EVPN routing table. Note that |
924 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
925 | * L3VPN routes. | |
926 | */ | |
927 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
928 | (struct prefix *)&rn->p, &vpn->prd); | |
929 | if (global_rn) { | |
930 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 931 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
128ea8ab | 932 | |
d62a17ae | 933 | /* Schedule for processing - withdraws to peers happen from |
934 | * this table. | |
935 | */ | |
936 | if (ri) | |
937 | bgp_process(bgp, global_rn, afi, safi); | |
938 | bgp_unlock_node(global_rn); | |
939 | } | |
128ea8ab | 940 | |
d62a17ae | 941 | /* Delete route entry in the VNI route table, caller to remove. */ |
942 | bgp_info_delete(rn, old_local); | |
128ea8ab | 943 | } |
944 | ||
50f74cf1 | 945 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
946 | { | |
947 | struct in_addr *ip; | |
948 | ||
949 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
950 | if (!ip) | |
951 | return NULL; | |
952 | ||
953 | ip->s_addr = vtep.s_addr; | |
954 | return ip; | |
955 | } | |
956 | ||
957 | static void es_vtep_free(struct in_addr *ip) | |
958 | { | |
959 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
960 | } | |
961 | ||
962 | /* check if VTEP is already part of the list */ | |
963 | static int is_vtep_present_in_list(struct list *list, | |
964 | struct in_addr vtep) | |
965 | { | |
966 | struct listnode *node = NULL; | |
967 | struct in_addr *tmp; | |
968 | ||
969 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
970 | if (tmp->s_addr == vtep.s_addr) | |
971 | return 1; | |
972 | } | |
973 | return 0; | |
974 | } | |
975 | ||
2bb9eff4 DS |
976 | /* |
977 | * Best path for ES route was changed, | |
978 | * update the list of VTEPs for this ES | |
979 | */ | |
50f74cf1 | 980 | static int evpn_es_install_vtep(struct bgp *bgp, |
981 | struct evpnes *es, | |
982 | struct prefix_evpn *p, | |
983 | struct in_addr rvtep) | |
984 | { | |
985 | struct in_addr *vtep_ip; | |
986 | ||
987 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
988 | return 0; | |
989 | ||
990 | ||
991 | vtep_ip = es_vtep_new(rvtep); | |
992 | if (vtep_ip) | |
993 | listnode_add_sort(es->vtep_list, vtep_ip); | |
994 | return 0; | |
995 | } | |
996 | ||
2bb9eff4 DS |
997 | /* |
998 | * Best path for ES route was changed, | |
999 | * update the list of VTEPs for this ES | |
1000 | */ | |
50f74cf1 | 1001 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1002 | struct evpnes *es, | |
1003 | struct prefix_evpn *p, | |
1004 | struct in_addr rvtep) | |
1005 | { | |
1006 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1007 | struct in_addr *tmp; | |
1008 | ||
1009 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1010 | if (tmp->s_addr == rvtep.s_addr) { | |
1011 | es_vtep_free(tmp); | |
1012 | node_to_del = node; | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | if (node_to_del) | |
1017 | list_delete_node(es->vtep_list, node_to_del); | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * Calculate the best path for a ES(type-4) route. | |
1024 | */ | |
1025 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1026 | struct evpnes *es, | |
1027 | struct bgp_node *rn) | |
1028 | { | |
1029 | int ret = 0; | |
1030 | afi_t afi = AFI_L2VPN; | |
1031 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1032 | struct bgp_path_info *old_select; /* old best */ |
1033 | struct bgp_path_info *new_select; /* new best */ | |
1034 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1035 | |
1036 | /* Compute the best path. */ | |
1037 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1038 | &old_and_new, afi, safi); | |
1039 | old_select = old_and_new.old; | |
1040 | new_select = old_and_new.new; | |
1041 | ||
2bb9eff4 DS |
1042 | /* |
1043 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1044 | * updated |
1045 | */ | |
1046 | if (old_select && old_select == new_select | |
1047 | && old_select->type == ZEBRA_ROUTE_BGP | |
1048 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1049 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1050 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
50f74cf1 | 1051 | && !bgp->addpath_tx_used[afi][safi]) { |
1052 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1053 | ret = evpn_es_install_vtep(bgp, es, | |
1054 | (struct prefix_evpn *)&rn->p, | |
1055 | old_select->attr->nexthop); | |
1056 | } | |
1defdda8 | 1057 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1058 | bgp_zebra_clear_route_change_flags(rn); |
1059 | return ret; | |
1060 | } | |
1061 | ||
1062 | /* If the user did a "clear" this flag will be set */ | |
1063 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1064 | ||
2bb9eff4 DS |
1065 | /* |
1066 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1067 | * into the zebra RIB. |
1068 | */ | |
1069 | if (old_select || new_select) | |
1070 | bgp_bump_version(rn); | |
1071 | ||
1072 | if (old_select) | |
1defdda8 | 1073 | bgp_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1074 | if (new_select) { |
1defdda8 DS |
1075 | bgp_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1076 | bgp_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1077 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); | |
50f74cf1 | 1078 | } |
1079 | ||
1080 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1081 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1082 | ret = evpn_es_install_vtep(bgp, es, | |
1083 | (struct prefix_evpn *)&rn->p, | |
1084 | new_select->attr->nexthop); | |
1085 | } else { | |
1086 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1087 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1088 | ret = evpn_es_uninstall_vtep( |
1089 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1090 | old_select->attr->nexthop); | |
50f74cf1 | 1091 | } |
1092 | ||
1093 | /* Clear any route change flags. */ | |
1094 | bgp_zebra_clear_route_change_flags(rn); | |
1095 | ||
1096 | /* Reap old select bgp_info, if it has been removed */ | |
1defdda8 | 1097 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
50f74cf1 | 1098 | bgp_info_reap(rn, old_select); |
1099 | ||
1100 | return ret; | |
1101 | } | |
1102 | ||
128ea8ab | 1103 | /* |
1104 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1105 | * if appropriate. | |
1106 | */ | |
d62a17ae | 1107 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1108 | struct bgp_node *rn) | |
1109 | { | |
4b7e6066 DS |
1110 | struct bgp_path_info *old_select, *new_select; |
1111 | struct bgp_path_info_pair old_and_new; | |
68e33151 | 1112 | struct prefix_evpn *evp; |
d62a17ae | 1113 | afi_t afi = AFI_L2VPN; |
1114 | safi_t safi = SAFI_EVPN; | |
1115 | int ret = 0; | |
d7c0a89a | 1116 | uint8_t flags = 0; |
d62a17ae | 1117 | |
1118 | /* Compute the best path. */ | |
1119 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1120 | afi, safi); | |
1121 | old_select = old_and_new.old; | |
1122 | new_select = old_and_new.new; | |
1123 | ||
68e33151 | 1124 | evp = (struct prefix_evpn *)&rn->p; |
d62a17ae | 1125 | /* If the best path hasn't changed - see if there is still something to |
1126 | * update | |
1127 | * to zebra RIB. | |
1128 | */ | |
1129 | if (old_select && old_select == new_select | |
1130 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1131 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1132 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1133 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
d62a17ae | 1134 | && !bgp->addpath_tx_used[afi][safi]) { |
ead40654 MK |
1135 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1136 | if (old_select->attr->sticky) | |
1137 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1138 | if (old_select->attr->default_gw) | |
1139 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1140 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1141 | old_select->attr->router_flag) | |
1142 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1143 | ||
996c9314 LB |
1144 | ret = evpn_zebra_install( |
1145 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
f07e1c99 | 1146 | old_select->attr->nexthop, flags, |
1147 | mac_mobility_seqnum(old_select->attr)); | |
ead40654 | 1148 | } |
1defdda8 | 1149 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1150 | bgp_zebra_clear_route_change_flags(rn); |
1151 | return ret; | |
1152 | } | |
1153 | ||
1154 | /* If the user did a "clear" this flag will be set */ | |
1155 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1156 | ||
1157 | /* bestpath has changed; update relevant fields and install or uninstall | |
1158 | * into the zebra RIB. | |
1159 | */ | |
1160 | if (old_select || new_select) | |
1161 | bgp_bump_version(rn); | |
1162 | ||
1163 | if (old_select) | |
1defdda8 | 1164 | bgp_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1165 | if (new_select) { |
1defdda8 DS |
1166 | bgp_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1167 | bgp_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1168 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); | |
d62a17ae | 1169 | } |
1170 | ||
1171 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1172 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1173 | flags = 0; |
1174 | if (new_select->attr->sticky) | |
1175 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1176 | if (new_select->attr->default_gw) | |
1177 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1178 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1179 | new_select->attr->router_flag) | |
1180 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1181 | ||
d62a17ae | 1182 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
f07e1c99 | 1183 | new_select->attr->nexthop, flags, |
1184 | mac_mobility_seqnum(new_select->attr)); | |
d62a17ae | 1185 | /* If an old best existed and it was a "local" route, the only |
1186 | * reason | |
1187 | * it would be supplanted is due to MAC mobility procedures. So, | |
1188 | * we | |
1189 | * need to do an implicit delete and withdraw that route from | |
1190 | * peers. | |
1191 | */ | |
1192 | if (old_select && old_select->peer == bgp->peer_self | |
1193 | && old_select->type == ZEBRA_ROUTE_BGP | |
1194 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1195 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1196 | } else { | |
1197 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1198 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1199 | ret = evpn_zebra_uninstall(bgp, vpn, |
1200 | (struct prefix_evpn *)&rn->p, | |
1201 | old_select->attr->nexthop); | |
1202 | } | |
1203 | ||
1204 | /* Clear any route change flags. */ | |
1205 | bgp_zebra_clear_route_change_flags(rn); | |
1206 | ||
1207 | /* Reap old select bgp_info, if it has been removed */ | |
1defdda8 | 1208 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
d62a17ae | 1209 | bgp_info_reap(rn, old_select); |
1210 | ||
1211 | return ret; | |
128ea8ab | 1212 | } |
1213 | ||
ead40654 MK |
1214 | /* |
1215 | * Return true if the local ri for this rn is of type gateway mac | |
1216 | */ | |
1217 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1218 | { | |
4b7e6066 DS |
1219 | struct bgp_path_info *tmp_ri = NULL; |
1220 | struct bgp_path_info *local_ri = NULL; | |
ead40654 MK |
1221 | |
1222 | local_ri = NULL; | |
1223 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1224 | if (tmp_ri->peer == bgp->peer_self | |
1225 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1226 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1227 | local_ri = tmp_ri; | |
1228 | } | |
1229 | ||
1230 | if (!local_ri) | |
1231 | return 0; | |
1232 | ||
1233 | return local_ri->attr->default_gw; | |
1234 | } | |
1235 | ||
c85c03c7 | 1236 | |
1237 | /* | |
1238 | * Return true if the local ri for this rn has sticky set | |
1239 | */ | |
d62a17ae | 1240 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1241 | { |
4b7e6066 DS |
1242 | struct bgp_path_info *tmp_ri; |
1243 | struct bgp_path_info *local_ri; | |
c85c03c7 | 1244 | |
d62a17ae | 1245 | local_ri = NULL; |
1246 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1247 | if (tmp_ri->peer == bgp->peer_self | |
1248 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1249 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1250 | local_ri = tmp_ri; | |
1251 | } | |
c85c03c7 | 1252 | |
d62a17ae | 1253 | if (!local_ri) |
1254 | return 0; | |
c85c03c7 | 1255 | |
d62a17ae | 1256 | return local_ri->attr->sticky; |
c85c03c7 | 1257 | } |
1258 | ||
50f74cf1 | 1259 | /* |
1260 | * create or update EVPN type4 route entry. | |
1261 | * This could be in the ES table or the global table. | |
1262 | * TODO: handle remote ES (type4) routes as well | |
1263 | */ | |
4b7e6066 | 1264 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1265 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1266 | struct bgp_node *rn, struct attr *attr, |
1267 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1268 | int *route_changed) |
1269 | { | |
1270 | char buf[ESI_STR_LEN]; | |
1271 | char buf1[INET6_ADDRSTRLEN]; | |
4b7e6066 DS |
1272 | struct bgp_path_info *tmp_ri = NULL; |
1273 | struct bgp_path_info *local_ri = NULL; /* local route entry if any */ | |
1274 | struct bgp_path_info *remote_ri = NULL; /* remote route entry if any */ | |
50f74cf1 | 1275 | struct attr *attr_new = NULL; |
1276 | struct prefix_evpn *evp = NULL; | |
1277 | ||
1278 | *ri = NULL; | |
1279 | *route_changed = 1; | |
1280 | evp = (struct prefix_evpn *)&rn->p; | |
1281 | ||
1282 | /* locate the local and remote entries if any */ | |
1283 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1284 | if (tmp_ri->peer == bgp->peer_self && | |
1285 | tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1286 | tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1287 | local_ri = tmp_ri; | |
1defdda8 DS |
1288 | if (tmp_ri->type == ZEBRA_ROUTE_BGP |
1289 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED | |
1290 | && CHECK_FLAG(tmp_ri->flags, BGP_PATH_VALID)) | |
50f74cf1 | 1291 | remote_ri = tmp_ri; |
1292 | } | |
1293 | ||
1294 | /* we don't expect to see a remote_ri at this point. | |
1295 | * An ES route has esi + vtep_ip as the key, | |
1296 | * We shouldn't see the same route from any other vtep. | |
1297 | */ | |
1298 | if (remote_ri) { | |
af4c2728 | 1299 | flog_err( |
e50f7cfd | 1300 | EC_BGP_ES_INVALID, |
14454c9f DS |
1301 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1302 | bgp->vrf_id, | |
1303 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1304 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1305 | return -1; |
1306 | } | |
1307 | ||
1308 | if (!local_ri && !add) | |
1309 | return 0; | |
1310 | ||
1311 | /* create or update the entry */ | |
1312 | if (!local_ri) { | |
1313 | ||
1314 | /* Add or update attribute to hash */ | |
1315 | attr_new = bgp_attr_intern(attr); | |
1316 | ||
1317 | /* Create new route with its attribute. */ | |
1318 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, | |
1319 | 0, bgp->peer_self, attr_new, rn); | |
1defdda8 | 1320 | SET_FLAG(tmp_ri->flags, BGP_PATH_VALID); |
50f74cf1 | 1321 | |
1322 | /* add the newly created path to the route-node */ | |
1323 | bgp_info_add(rn, tmp_ri); | |
1324 | } else { | |
1325 | tmp_ri = local_ri; | |
1326 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1defdda8 | 1327 | && !CHECK_FLAG(tmp_ri->flags, BGP_PATH_REMOVED)) |
50f74cf1 | 1328 | *route_changed = 0; |
1329 | else { | |
1330 | /* The attribute has changed. | |
1331 | * Add (or update) attribute to hash. */ | |
1332 | attr_new = bgp_attr_intern(attr); | |
1defdda8 | 1333 | bgp_info_set_flag(rn, tmp_ri, BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1334 | |
1335 | /* Restore route, if needed. */ | |
1defdda8 | 1336 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_REMOVED)) |
50f74cf1 | 1337 | bgp_info_restore(rn, tmp_ri); |
1338 | ||
1339 | /* Unintern existing, set to new. */ | |
1340 | bgp_attr_unintern(&tmp_ri->attr); | |
1341 | tmp_ri->attr = attr_new; | |
1342 | tmp_ri->uptime = bgp_clock(); | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | /* Return back the route entry. */ | |
1347 | *ri = tmp_ri; | |
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | /* update evpn es (type-4) route */ | |
1352 | static int update_evpn_type4_route(struct bgp *bgp, | |
1353 | struct evpnes *es, | |
1354 | struct prefix_evpn *p) | |
1355 | { | |
1356 | int ret = 0; | |
1357 | int route_changed = 0; | |
1358 | char buf[ESI_STR_LEN]; | |
1359 | char buf1[INET6_ADDRSTRLEN]; | |
1360 | afi_t afi = AFI_L2VPN; | |
1361 | safi_t safi = SAFI_EVPN; | |
1362 | struct attr attr; | |
1363 | struct attr *attr_new = NULL; | |
1364 | struct bgp_node *rn = NULL; | |
4b7e6066 | 1365 | struct bgp_path_info *ri = NULL; |
50f74cf1 | 1366 | |
1367 | memset(&attr, 0, sizeof(struct attr)); | |
1368 | ||
1369 | /* Build path-attribute for this route. */ | |
1370 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1371 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1372 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1373 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1374 | ||
1375 | /* Set up extended community. */ | |
1376 | build_evpn_type4_route_extcomm(es, &attr); | |
1377 | ||
1378 | /* First, create (or fetch) route node within the ESI. */ | |
1379 | /* NOTE: There is no RD here. */ | |
1380 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1381 | ||
1382 | /* Create or update route entry. */ | |
1383 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, | |
1384 | &attr, 1, &ri, | |
1385 | &route_changed); | |
1386 | if (ret != 0) { | |
1c50c1c0 QY |
1387 | flog_err(EC_BGP_ES_INVALID, |
1388 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1389 | bgp->vrf_id, | |
1390 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1391 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1392 | } |
1393 | ||
1394 | assert(ri); | |
1395 | attr_new = ri->attr; | |
1396 | ||
1397 | /* Perform route selection; | |
1398 | * this is just to set the flags correctly | |
1399 | * as local route in the ES always wins. | |
1400 | */ | |
1401 | evpn_es_route_select_install(bgp, es, rn); | |
1402 | bgp_unlock_node(rn); | |
1403 | ||
1404 | /* If this is a new route or some attribute has changed, export the | |
1405 | * route to the global table. The route will be advertised to peers | |
1406 | * from there. Note that this table is a 2-level tree (RD-level + | |
1407 | * Prefix-level) similar to L3VPN routes. | |
1408 | */ | |
1409 | if (route_changed) { | |
4b7e6066 | 1410 | struct bgp_path_info *global_ri; |
50f74cf1 | 1411 | |
1412 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1413 | (struct prefix *)p, &es->prd); | |
1414 | update_evpn_type4_route_entry(bgp, es, afi, safi, | |
1415 | rn, attr_new, | |
1416 | 1, &global_ri, | |
1417 | &route_changed); | |
1418 | ||
1419 | /* Schedule for processing and unlock node. */ | |
1420 | bgp_process(bgp, rn, afi, safi); | |
1421 | bgp_unlock_node(rn); | |
1422 | } | |
1423 | ||
1424 | /* Unintern temporary. */ | |
1425 | aspath_unintern(&attr.aspath); | |
1426 | return 0; | |
1427 | } | |
1428 | ||
342dd0c6 | 1429 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1430 | struct bgp *bgp_vrf, afi_t afi, | |
1431 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1432 | struct attr *attr, int *route_changed) |
342dd0c6 | 1433 | { |
1434 | struct attr *attr_new = NULL; | |
4b7e6066 | 1435 | struct bgp_path_info *ri = NULL; |
342dd0c6 | 1436 | mpls_label_t label = MPLS_INVALID_LABEL; |
4b7e6066 DS |
1437 | struct bgp_path_info *local_ri = NULL; |
1438 | struct bgp_path_info *tmp_ri = NULL; | |
342dd0c6 | 1439 | |
5424b7ba | 1440 | *route_changed = 0; |
342dd0c6 | 1441 | /* locate the local route entry if any */ |
1442 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1443 | if (tmp_ri->peer == bgp_def->peer_self | |
1444 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1445 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1446 | local_ri = tmp_ri; | |
1447 | } | |
1448 | ||
2bb9eff4 DS |
1449 | /* |
1450 | * create a new route entry if one doesnt exist. | |
1451 | * Otherwise see if route attr has changed | |
523cafc4 | 1452 | */ |
342dd0c6 | 1453 | if (!local_ri) { |
1454 | ||
5424b7ba MK |
1455 | /* route has changed as this is the first entry */ |
1456 | *route_changed = 1; | |
1457 | ||
342dd0c6 | 1458 | /* Add (or update) attribute to hash. */ |
1459 | attr_new = bgp_attr_intern(attr); | |
1460 | ||
1461 | /* create the route info from attribute */ | |
1462 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1463 | bgp_def->peer_self, attr_new, rn); | |
1defdda8 | 1464 | SET_FLAG(ri->flags, BGP_PATH_VALID); |
342dd0c6 | 1465 | |
b57ba6d2 | 1466 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1467 | bgp_info_extra_get(ri); |
1468 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1469 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1470 | ri->extra->num_labels = 1; | |
342dd0c6 | 1471 | |
1472 | /* add the route entry to route node*/ | |
1473 | bgp_info_add(rn, ri); | |
1474 | } else { | |
1475 | ||
1476 | tmp_ri = local_ri; | |
1477 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1478 | |
1479 | /* attribute changed */ | |
1480 | *route_changed = 1; | |
1481 | ||
342dd0c6 | 1482 | /* The attribute has changed. */ |
1483 | /* Add (or update) attribute to hash. */ | |
1484 | attr_new = bgp_attr_intern(attr); | |
1defdda8 | 1485 | bgp_info_set_flag(rn, tmp_ri, BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1486 | |
1487 | /* Restore route, if needed. */ | |
1defdda8 | 1488 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_REMOVED)) |
342dd0c6 | 1489 | bgp_info_restore(rn, tmp_ri); |
1490 | ||
1491 | /* Unintern existing, set to new. */ | |
1492 | bgp_attr_unintern(&tmp_ri->attr); | |
1493 | tmp_ri->attr = attr_new; | |
1494 | tmp_ri->uptime = bgp_clock(); | |
1495 | } | |
1496 | } | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1501 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1502 | struct attr *src_attr) | |
342dd0c6 | 1503 | { |
1504 | afi_t afi = AFI_L2VPN; | |
1505 | safi_t safi = SAFI_EVPN; | |
1506 | struct attr attr; | |
1507 | struct bgp_node *rn = NULL; | |
1508 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1509 | int route_changed = 0; |
342dd0c6 | 1510 | |
1511 | bgp_def = bgp_get_default(); | |
1512 | if (!bgp_def) | |
faafdfa8 | 1513 | return 0; |
342dd0c6 | 1514 | |
2f69f6d3 | 1515 | /* Build path attribute for this route - use the source attr, if |
1516 | * present, else treat as locally originated. | |
1517 | */ | |
1518 | if (src_attr) | |
1519 | bgp_attr_dup(&attr, src_attr); | |
1520 | else { | |
1521 | memset(&attr, 0, sizeof(struct attr)); | |
1522 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1523 | } | |
1524 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1525 | attr.nexthop = bgp_vrf->originator_ip; |
1526 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1527 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1528 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1529 | ||
1530 | /* Setup RT and encap extended community */ | |
1531 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1532 | ||
1533 | /* get the route node in global table */ | |
1534 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1535 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1536 | assert(rn); |
1537 | ||
1538 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1539 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1540 | &route_changed); | |
342dd0c6 | 1541 | |
1542 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1543 | if (route_changed) { |
1544 | bgp_process(bgp_def, rn, afi, safi); | |
1545 | bgp_unlock_node(rn); | |
1546 | } | |
342dd0c6 | 1547 | |
1548 | /* uninten temporary */ | |
5ee65f6f | 1549 | if (!src_attr) |
1550 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1551 | return 0; |
1552 | } | |
1553 | ||
128ea8ab | 1554 | /* |
1555 | * Create or update EVPN route entry. This could be in the VNI route table | |
1556 | * or the global route table. | |
1557 | */ | |
d62a17ae | 1558 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1559 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1560 | struct attr *attr, int add, |
4b7e6066 | 1561 | struct bgp_path_info **ri, uint8_t flags, |
f07e1c99 | 1562 | uint32_t seq) |
d62a17ae | 1563 | { |
4b7e6066 DS |
1564 | struct bgp_path_info *tmp_ri; |
1565 | struct bgp_path_info *local_ri; | |
d62a17ae | 1566 | struct attr *attr_new; |
b57ba6d2 | 1567 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1568 | uint32_t num_labels = 1; |
d62a17ae | 1569 | int route_change = 1; |
d7c0a89a | 1570 | uint8_t sticky = 0; |
b57ba6d2 | 1571 | struct prefix_evpn *evp; |
d62a17ae | 1572 | |
1573 | *ri = NULL; | |
b57ba6d2 MK |
1574 | evp = (struct prefix_evpn *)&rn->p; |
1575 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1576 | |
f07e1c99 | 1577 | /* See if this is an update of an existing route, or a new add. */ |
1578 | local_ri = NULL; | |
d62a17ae | 1579 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { |
1580 | if (tmp_ri->peer == bgp->peer_self | |
1581 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1582 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1583 | local_ri = tmp_ri; | |
d62a17ae | 1584 | } |
1585 | ||
1586 | /* If route doesn't exist already, create a new one, if told to. | |
1587 | * Otherwise act based on whether the attributes of the route have | |
1588 | * changed or not. | |
1589 | */ | |
1590 | if (!local_ri && !add) | |
1591 | return 0; | |
1592 | ||
f07e1c99 | 1593 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1594 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1595 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1596 | |
f07e1c99 | 1597 | if (!local_ri) { |
d62a17ae | 1598 | /* Add (or update) attribute to hash. */ |
1599 | attr_new = bgp_attr_intern(attr); | |
1600 | ||
1601 | /* Extract MAC mobility sequence number, if any. */ | |
1602 | attr_new->mm_seqnum = | |
1603 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1604 | attr_new->sticky = sticky; | |
1605 | ||
1606 | /* Create new route with its attribute. */ | |
1607 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1608 | bgp->peer_self, attr_new, rn); | |
1defdda8 | 1609 | SET_FLAG(tmp_ri->flags, BGP_PATH_VALID); |
d62a17ae | 1610 | bgp_info_extra_get(tmp_ri); |
1611 | ||
1612 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1613 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1614 | |
1615 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1616 | * Only attach second label if we are advertising two labels for | |
1617 | * type-2 routes. | |
1618 | */ | |
996c9314 LB |
1619 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1620 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1621 | vni_t l3vni; |
1622 | ||
1623 | l3vni = bgpevpn_get_l3vni(vpn); | |
1624 | if (l3vni) { | |
1625 | vni2label(l3vni, &label[1]); | |
1626 | num_labels++; | |
1627 | } | |
1628 | } | |
d62a17ae | 1629 | |
b57ba6d2 MK |
1630 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1631 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1632 | bgp_info_add(rn, tmp_ri); |
1633 | } else { | |
1634 | tmp_ri = local_ri; | |
1635 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1defdda8 | 1636 | && !CHECK_FLAG(tmp_ri->flags, BGP_PATH_REMOVED)) |
d62a17ae | 1637 | route_change = 0; |
1638 | else { | |
c48d9f5f MK |
1639 | /* |
1640 | * The attributes have changed, type-2 routes needs to | |
1641 | * be advertised with right labels. | |
1642 | */ | |
1643 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1644 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1645 | && CHECK_FLAG(vpn->flags, | |
1646 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1647 | vni_t l3vni; |
1648 | ||
1649 | l3vni = bgpevpn_get_l3vni(vpn); | |
1650 | if (l3vni) { | |
1651 | vni2label(l3vni, &label[1]); | |
1652 | num_labels++; | |
1653 | } | |
1654 | } | |
1655 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1656 | tmp_ri->extra->num_labels = num_labels; | |
1657 | ||
d62a17ae | 1658 | /* The attribute has changed. */ |
1659 | /* Add (or update) attribute to hash. */ | |
1660 | attr_new = bgp_attr_intern(attr); | |
1defdda8 | 1661 | bgp_info_set_flag(rn, tmp_ri, BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1662 | |
f07e1c99 | 1663 | /* Extract MAC mobility sequence number, if any. */ |
1664 | attr_new->mm_seqnum = | |
1665 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1666 | attr_new->sticky = sticky; | |
1667 | ||
d62a17ae | 1668 | /* Restore route, if needed. */ |
1defdda8 | 1669 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_REMOVED)) |
d62a17ae | 1670 | bgp_info_restore(rn, tmp_ri); |
1671 | ||
1672 | /* Unintern existing, set to new. */ | |
1673 | bgp_attr_unintern(&tmp_ri->attr); | |
1674 | tmp_ri->attr = attr_new; | |
1675 | tmp_ri->uptime = bgp_clock(); | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | /* Return back the route entry. */ | |
1680 | *ri = tmp_ri; | |
1681 | return route_change; | |
128ea8ab | 1682 | } |
1683 | ||
1684 | /* | |
1685 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1686 | * and schedule for processing. | |
1687 | */ | |
d62a17ae | 1688 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1689 | struct prefix_evpn *p, uint8_t flags, |
1690 | uint32_t seq) | |
128ea8ab | 1691 | { |
d62a17ae | 1692 | struct bgp_node *rn; |
1693 | struct attr attr; | |
1694 | struct attr *attr_new; | |
1ec31309 | 1695 | int add_l3_ecomm = 0; |
4b7e6066 | 1696 | struct bgp_path_info *ri; |
d62a17ae | 1697 | afi_t afi = AFI_L2VPN; |
1698 | safi_t safi = SAFI_EVPN; | |
1699 | int route_change; | |
128ea8ab | 1700 | |
d62a17ae | 1701 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1702 | |
d62a17ae | 1703 | /* Build path-attribute for this route. */ |
1704 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1705 | attr.nexthop = vpn->originator_ip; | |
1706 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1707 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1708 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1709 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1710 | attr.router_flag = CHECK_FLAG(flags, |
1711 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1712 | |
1713 | /* PMSI is only needed for type-3 routes */ | |
1714 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1715 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1716 | ||
1ec31309 | 1717 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1718 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1719 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1720 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1721 | |
1ec31309 | 1722 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1723 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1724 | * these routes. | |
1725 | */ | |
1726 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1727 | (is_evpn_prefix_ipaddr_v4(p) || |
1728 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1729 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1730 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1731 | add_l3_ecomm = 1; |
1732 | ||
1733 | /* Set up extended community. */ | |
1734 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1735 | |
d62a17ae | 1736 | /* First, create (or fetch) route node within the VNI. */ |
1737 | /* NOTE: There is no RD here. */ | |
1738 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1739 | |
d62a17ae | 1740 | /* Create or update route entry. */ |
1741 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
f07e1c99 | 1742 | 1, &ri, flags, seq); |
d62a17ae | 1743 | assert(ri); |
1744 | attr_new = ri->attr; | |
128ea8ab | 1745 | |
d62a17ae | 1746 | /* Perform route selection; this is just to set the flags correctly |
1747 | * as local route in the VNI always wins. | |
1748 | */ | |
1749 | evpn_route_select_install(bgp, vpn, rn); | |
1750 | bgp_unlock_node(rn); | |
128ea8ab | 1751 | |
d62a17ae | 1752 | /* If this is a new route or some attribute has changed, export the |
1753 | * route to the global table. The route will be advertised to peers | |
1754 | * from there. Note that this table is a 2-level tree (RD-level + | |
1755 | * Prefix-level) similar to L3VPN routes. | |
1756 | */ | |
1757 | if (route_change) { | |
4b7e6066 | 1758 | struct bgp_path_info *global_ri; |
128ea8ab | 1759 | |
d62a17ae | 1760 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1761 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1762 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
1763 | &global_ri, flags, seq); | |
128ea8ab | 1764 | |
d62a17ae | 1765 | /* Schedule for processing and unlock node. */ |
1766 | bgp_process(bgp, rn, afi, safi); | |
1767 | bgp_unlock_node(rn); | |
1768 | } | |
128ea8ab | 1769 | |
d62a17ae | 1770 | /* Unintern temporary. */ |
1771 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1772 | |
d62a17ae | 1773 | return 0; |
128ea8ab | 1774 | } |
1775 | ||
50f74cf1 | 1776 | /* |
1777 | * Delete EVPN route entry. | |
1778 | * The entry can be in ESI/VNI table or the global table. | |
1779 | */ | |
4b7e6066 | 1780 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1781 | struct bgp_node *rn, |
4b7e6066 | 1782 | struct bgp_path_info **ri) |
342dd0c6 | 1783 | { |
4b7e6066 | 1784 | struct bgp_path_info *tmp_ri; |
342dd0c6 | 1785 | |
1786 | *ri = NULL; | |
1787 | ||
50f74cf1 | 1788 | /* Now, find matching route. */ |
342dd0c6 | 1789 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) |
50f74cf1 | 1790 | if (tmp_ri->peer == bgp->peer_self |
342dd0c6 | 1791 | && tmp_ri->type == ZEBRA_ROUTE_BGP |
1792 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1793 | break; | |
1794 | ||
1795 | *ri = tmp_ri; | |
1796 | ||
1797 | /* Mark route for delete. */ | |
1798 | if (tmp_ri) | |
1799 | bgp_info_delete(rn, tmp_ri); | |
1800 | } | |
1801 | ||
50f74cf1 | 1802 | |
1803 | ||
1804 | /* Delete EVPN ES (type-4) route */ | |
1805 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1806 | struct evpnes *es, | |
1807 | struct prefix_evpn *p) | |
1808 | { | |
1809 | afi_t afi = AFI_L2VPN; | |
1810 | safi_t safi = SAFI_EVPN; | |
4b7e6066 | 1811 | struct bgp_path_info *ri; |
50f74cf1 | 1812 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1813 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1814 | ||
1815 | /* First, locate the route node within the ESI. | |
1816 | * If it doesn't exist, ther is nothing to do. | |
1817 | * Note: there is no RD here. | |
1818 | */ | |
1819 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1820 | if (!rn) |
50f74cf1 | 1821 | return 0; |
1822 | ||
1823 | /* Next, locate route node in the global EVPN routing table. | |
1824 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1825 | */ | |
1826 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1827 | (struct prefix *)p, &es->prd); | |
1828 | if (global_rn) { | |
1829 | ||
1830 | /* Delete route entry in the global EVPN table. */ | |
1831 | delete_evpn_route_entry(bgp, afi, safi, | |
1832 | global_rn, &ri); | |
1833 | ||
1834 | /* Schedule for processing - withdraws to peers happen from | |
1835 | * this table. | |
1836 | */ | |
1837 | if (ri) | |
1838 | bgp_process(bgp, global_rn, afi, safi); | |
1839 | bgp_unlock_node(global_rn); | |
1840 | } | |
1841 | ||
1842 | /* | |
1843 | * Delete route entry in the ESI route table. | |
1844 | * This can just be removed. | |
1845 | */ | |
1846 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); | |
1847 | if (ri) | |
1848 | bgp_info_reap(rn, ri); | |
1849 | bgp_unlock_node(rn); | |
1850 | return 0; | |
1851 | } | |
1852 | ||
342dd0c6 | 1853 | /* Delete EVPN type5 route */ |
996c9314 | 1854 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1855 | { |
1856 | afi_t afi = AFI_L2VPN; | |
1857 | safi_t safi = SAFI_EVPN; | |
1858 | struct bgp_node *rn = NULL; | |
4b7e6066 | 1859 | struct bgp_path_info *ri = NULL; |
342dd0c6 | 1860 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
1861 | ||
1862 | bgp_def = bgp_get_default(); | |
1863 | if (!bgp_def) | |
faafdfa8 | 1864 | return 0; |
342dd0c6 | 1865 | |
1866 | /* locate the global route entry for this type-5 prefix */ | |
1867 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1868 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1869 | if (!rn) | |
1870 | return 0; | |
1871 | ||
50f74cf1 | 1872 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &ri); |
342dd0c6 | 1873 | if (ri) |
1874 | bgp_process(bgp_def, rn, afi, safi); | |
1875 | bgp_unlock_node(rn); | |
1876 | return 0; | |
1877 | } | |
1878 | ||
128ea8ab | 1879 | /* |
1880 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1881 | * schedule for processing. | |
1882 | */ | |
d62a17ae | 1883 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1884 | struct prefix_evpn *p) | |
1885 | { | |
1886 | struct bgp_node *rn, *global_rn; | |
4b7e6066 | 1887 | struct bgp_path_info *ri; |
d62a17ae | 1888 | afi_t afi = AFI_L2VPN; |
1889 | safi_t safi = SAFI_EVPN; | |
1890 | ||
1891 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1892 | * there | |
1893 | * is nothing further to do. | |
1894 | */ | |
1895 | /* NOTE: There is no RD here. */ | |
1896 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1897 | if (!rn) | |
1898 | return 0; | |
1899 | ||
1900 | /* Next, locate route node in the global EVPN routing table. Note that | |
1901 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1902 | * L3VPN routes. | |
1903 | */ | |
1904 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1905 | (struct prefix *)p, &vpn->prd); | |
1906 | if (global_rn) { | |
1907 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 1908 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
d62a17ae | 1909 | |
1910 | /* Schedule for processing - withdraws to peers happen from | |
1911 | * this table. | |
1912 | */ | |
1913 | if (ri) | |
1914 | bgp_process(bgp, global_rn, afi, safi); | |
1915 | bgp_unlock_node(global_rn); | |
1916 | } | |
1917 | ||
1918 | /* Delete route entry in the VNI route table. This can just be removed. | |
1919 | */ | |
50f74cf1 | 1920 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 1921 | if (ri) |
1922 | bgp_info_reap(rn, ri); | |
1923 | bgp_unlock_node(rn); | |
1924 | ||
1925 | return 0; | |
128ea8ab | 1926 | } |
1927 | ||
1928 | /* | |
1929 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1930 | * be scheduled for advertise to peers. | |
1931 | */ | |
d62a17ae | 1932 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1933 | { | |
1934 | afi_t afi; | |
1935 | safi_t safi; | |
1936 | struct bgp_node *rn; | |
4b7e6066 | 1937 | struct bgp_path_info *ri, *tmp_ri; |
d62a17ae | 1938 | struct attr attr; |
d62a17ae | 1939 | struct attr *attr_new; |
f07e1c99 | 1940 | uint32_t seq; |
1ec31309 | 1941 | int add_l3_ecomm = 0; |
d62a17ae | 1942 | |
1943 | afi = AFI_L2VPN; | |
1944 | safi = SAFI_EVPN; | |
d62a17ae | 1945 | |
1946 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1947 | * routes updated, update corresponding entry in the global table too. | |
1948 | */ | |
1949 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1950 | rn = bgp_route_next(rn)) { | |
1951 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1952 | struct bgp_node *rd_rn; | |
4b7e6066 | 1953 | struct bgp_path_info *global_ri; |
d62a17ae | 1954 | |
1955 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1956 | continue; | |
1957 | ||
f07e1c99 | 1958 | /* Identify local route. */ |
1959 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1960 | if (tmp_ri->peer == bgp->peer_self | |
1961 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1962 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1963 | break; | |
7ec156a9 | 1964 | } |
d62a17ae | 1965 | |
f07e1c99 | 1966 | if (!tmp_ri) |
d62a17ae | 1967 | continue; |
1968 | ||
f07e1c99 | 1969 | /* |
1970 | * Build attribute per local route as the MAC mobility and | |
1971 | * some other values could differ for different routes. The | |
1972 | * attributes will be shared in the hash table. | |
1973 | */ | |
1974 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1975 | attr.nexthop = vpn->originator_ip; | |
1976 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1977 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1978 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
1979 | ||
1980 | if (evpn_route_is_sticky(bgp, rn)) | |
1981 | attr.sticky = 1; | |
1982 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
1983 | attr.default_gw = 1; | |
1984 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1985 | attr.router_flag = 1; | |
1986 | } | |
1987 | ||
1988 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1989 | * using L3 VNI for type-2 routes also. | |
1990 | */ | |
1991 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 1992 | !IN6_IS_ADDR_LINKLOCAL( |
1993 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 1994 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1995 | bgpevpn_get_l3vni(vpn)) | |
1996 | add_l3_ecomm = 1; | |
1997 | ||
1998 | /* Set up extended community. */ | |
1999 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2000 | ||
2001 | seq = mac_mobility_seqnum(tmp_ri->attr); | |
2002 | ||
2003 | /* Update the route entry. */ | |
2004 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
2005 | &attr, 0, &ri, 0, seq); | |
2006 | ||
d62a17ae | 2007 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2008 | * correctly as local route in the VNI always wins. |
d62a17ae | 2009 | */ |
2010 | evpn_route_select_install(bgp, vpn, rn); | |
2011 | ||
2012 | attr_new = ri->attr; | |
2013 | ||
2014 | /* Update route in global routing table. */ | |
2015 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2016 | (struct prefix *)evp, &vpn->prd); | |
2017 | assert(rd_rn); | |
2018 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
f07e1c99 | 2019 | &global_ri, 0, |
2020 | mac_mobility_seqnum(attr_new)); | |
d62a17ae | 2021 | |
2022 | /* Schedule for processing and unlock node. */ | |
2023 | bgp_process(bgp, rd_rn, afi, safi); | |
2024 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2025 | |
f07e1c99 | 2026 | /* Unintern temporary. */ |
2027 | aspath_unintern(&attr.aspath); | |
2028 | ||
2029 | } | |
d62a17ae | 2030 | |
2031 | return 0; | |
128ea8ab | 2032 | } |
2033 | ||
2034 | /* | |
2035 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2036 | * global routing table. These are also scheduled for withdraw from peers. | |
2037 | */ | |
d62a17ae | 2038 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2039 | { |
d62a17ae | 2040 | afi_t afi; |
2041 | safi_t safi; | |
2042 | struct bgp_node *rdrn, *rn; | |
2043 | struct bgp_table *table; | |
4b7e6066 | 2044 | struct bgp_path_info *ri; |
128ea8ab | 2045 | |
d62a17ae | 2046 | afi = AFI_L2VPN; |
2047 | safi = SAFI_EVPN; | |
128ea8ab | 2048 | |
d62a17ae | 2049 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2050 | if (rdrn && rdrn->info) { | |
2051 | table = (struct bgp_table *)rdrn->info; | |
2052 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2053 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2054 | |
d62a17ae | 2055 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2056 | continue; | |
128ea8ab | 2057 | |
50f74cf1 | 2058 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 2059 | if (ri) |
2060 | bgp_process(bgp, rn, afi, safi); | |
2061 | } | |
2062 | } | |
128ea8ab | 2063 | |
d62a17ae | 2064 | /* Unlock RD node. */ |
2065 | if (rdrn) | |
2066 | bgp_unlock_node(rdrn); | |
128ea8ab | 2067 | |
d62a17ae | 2068 | return 0; |
128ea8ab | 2069 | } |
2070 | ||
2071 | /* | |
2072 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2073 | * table as well as the per-VNI route table. | |
2074 | */ | |
d62a17ae | 2075 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2076 | { |
d62a17ae | 2077 | afi_t afi; |
2078 | safi_t safi; | |
2079 | struct bgp_node *rn; | |
4b7e6066 | 2080 | struct bgp_path_info *ri; |
128ea8ab | 2081 | |
d62a17ae | 2082 | afi = AFI_L2VPN; |
2083 | safi = SAFI_EVPN; | |
128ea8ab | 2084 | |
d62a17ae | 2085 | /* First, walk the global route table for this VNI's type-2 local |
2086 | * routes. | |
2087 | * EVPN routes are a 2-level table, first get the RD table. | |
2088 | */ | |
2089 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2090 | |
d62a17ae | 2091 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2092 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2093 | rn = bgp_route_next(rn)) { | |
2094 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2095 | |
d62a17ae | 2096 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2097 | continue; | |
128ea8ab | 2098 | |
50f74cf1 | 2099 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
128ea8ab | 2100 | |
d62a17ae | 2101 | /* Route entry in local table gets deleted immediately. */ |
2102 | if (ri) | |
2103 | bgp_info_reap(rn, ri); | |
2104 | } | |
128ea8ab | 2105 | |
d62a17ae | 2106 | return 0; |
128ea8ab | 2107 | } |
2108 | ||
50f74cf1 | 2109 | /* |
2110 | * Delete all routes in per ES route-table | |
2111 | */ | |
2112 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2113 | { | |
2114 | struct bgp_node *rn; | |
4b7e6066 | 2115 | struct bgp_path_info *ri, *nextri; |
50f74cf1 | 2116 | |
2117 | /* Walk this ES's route table and delete all routes. */ | |
2118 | for (rn = bgp_table_top(es->route_table); rn; | |
2119 | rn = bgp_route_next(rn)) { | |
2120 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2121 | ri = nextri) { | |
2122 | bgp_info_delete(rn, ri); | |
2123 | bgp_info_reap(rn, ri); | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | ||
128ea8ab | 2130 | /* |
2131 | * Delete all routes in the per-VNI route table. | |
2132 | */ | |
d62a17ae | 2133 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2134 | { |
d62a17ae | 2135 | struct bgp_node *rn; |
4b7e6066 | 2136 | struct bgp_path_info *ri, *nextri; |
128ea8ab | 2137 | |
d62a17ae | 2138 | /* Walk this VNI's route table and delete all routes. */ |
2139 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2140 | rn = bgp_route_next(rn)) { | |
2141 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2142 | ri = nextri) { | |
2143 | bgp_info_delete(rn, ri); | |
2144 | bgp_info_reap(rn, ri); | |
2145 | } | |
2146 | } | |
128ea8ab | 2147 | |
d62a17ae | 2148 | return 0; |
128ea8ab | 2149 | } |
2150 | ||
2151 | /* | |
2152 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2153 | * export RT getting modified or change to tunnel IP. Note that these | |
2154 | * situations need the route in the per-VNI table as well as the global | |
2155 | * table to be updated (as attributes change). | |
2156 | */ | |
d62a17ae | 2157 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2158 | { |
d62a17ae | 2159 | int ret; |
2160 | struct prefix_evpn p; | |
128ea8ab | 2161 | |
d62a17ae | 2162 | /* Update and advertise the type-3 route (only one) followed by the |
2163 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2164 | */ | |
2165 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 2166 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); |
d62a17ae | 2167 | if (ret) |
2168 | return ret; | |
128ea8ab | 2169 | |
d62a17ae | 2170 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2171 | } |
2172 | ||
50f74cf1 | 2173 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2174 | * Also remove all other routes from the per ES table. | |
2175 | * Invoked when ES is deleted. | |
2176 | */ | |
2177 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2178 | { | |
2179 | int ret; | |
2180 | char buf[ESI_STR_LEN]; | |
2181 | struct prefix_evpn p; | |
2182 | ||
2183 | /* Delete and withdraw locally learnt ES route */ | |
2184 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2185 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2186 | if (ret) { | |
e50f7cfd | 2187 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2188 | "%u failed to delete type-4 route for ESI %s", |
2189 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2190 | } |
2191 | ||
2192 | /* Delete all routes from per ES table */ | |
2193 | return delete_all_es_routes(bgp, es); | |
2194 | } | |
2195 | ||
128ea8ab | 2196 | /* |
2197 | * Delete (and withdraw) local routes for specified VNI from the global | |
2198 | * table and per-VNI table. After this, remove all other routes from | |
2199 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2200 | * (advertise-all-vni) being disabled. | |
2201 | */ | |
d62a17ae | 2202 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2203 | { |
d62a17ae | 2204 | int ret; |
2205 | struct prefix_evpn p; | |
128ea8ab | 2206 | |
d62a17ae | 2207 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2208 | * followed by type-3 routes (only one) - for this VNI. | |
2209 | */ | |
2210 | ret = delete_all_type2_routes(bgp, vpn); | |
2211 | if (ret) | |
2212 | return ret; | |
128ea8ab | 2213 | |
d62a17ae | 2214 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2215 | ret = delete_evpn_route(bgp, vpn, &p); | |
2216 | if (ret) | |
2217 | return ret; | |
128ea8ab | 2218 | |
d62a17ae | 2219 | /* Delete all routes from the per-VNI table. */ |
2220 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2221 | } |
2222 | ||
2223 | /* | |
d1911c26 | 2224 | * There is a tunnel endpoint IP address change for this VNI, delete |
2225 | * prior type-3 route (if needed) and update. | |
2226 | * Note: Route re-advertisement happens elsewhere after other processing | |
2227 | * other changes. | |
128ea8ab | 2228 | */ |
d62a17ae | 2229 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2230 | struct in_addr originator_ip) | |
128ea8ab | 2231 | { |
d62a17ae | 2232 | struct prefix_evpn p; |
128ea8ab | 2233 | |
ddd16ed5 MK |
2234 | /* If VNI is not live, we only need to update the originator ip */ |
2235 | if (!is_vni_live(vpn)) { | |
2236 | vpn->originator_ip = originator_ip; | |
2237 | return 0; | |
2238 | } | |
2239 | ||
db0e1937 MK |
2240 | /* Update the tunnel-ip hash */ |
2241 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2242 | bgp_tip_add(bgp, &originator_ip); | |
2243 | ||
2244 | /* filter routes as martian nexthop db has changed */ | |
2245 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2246 | ||
d62a17ae | 2247 | /* Need to withdraw type-3 route as the originator IP is part |
2248 | * of the key. | |
2249 | */ | |
2250 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2251 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2252 | |
d62a17ae | 2253 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2254 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2255 | return 0; |
128ea8ab | 2256 | } |
2257 | ||
50f74cf1 | 2258 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2259 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2260 | struct prefix_evpn *p, |
4b7e6066 | 2261 | struct bgp_path_info *parent_ri) |
50f74cf1 | 2262 | { |
2263 | int ret = 0; | |
2264 | struct bgp_node *rn = NULL; | |
4b7e6066 | 2265 | struct bgp_path_info *ri = NULL; |
50f74cf1 | 2266 | struct attr *attr_new = NULL; |
2267 | ||
2268 | /* Create (or fetch) route within the VNI. | |
2269 | * NOTE: There is no RD here. | |
2270 | */ | |
2271 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2272 | ||
2273 | /* Check if route entry is already present. */ | |
2274 | for (ri = rn->info; ri; ri = ri->next) | |
4b7e6066 DS |
2275 | if (ri->extra |
2276 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) | |
50f74cf1 | 2277 | break; |
2278 | ||
2279 | if (!ri) { | |
2280 | /* Add (or update) attribute to hash. */ | |
2281 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2282 | ||
2283 | /* Create new route with its attribute. */ | |
2284 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, | |
2285 | parent_ri->peer, attr_new, rn); | |
1defdda8 | 2286 | SET_FLAG(ri->flags, BGP_PATH_VALID); |
50f74cf1 | 2287 | bgp_info_extra_get(ri); |
2288 | ri->extra->parent = parent_ri; | |
2289 | bgp_info_add(rn, ri); | |
2290 | } else { | |
2291 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1defdda8 | 2292 | && !CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) { |
50f74cf1 | 2293 | bgp_unlock_node(rn); |
2294 | return 0; | |
2295 | } | |
2296 | /* The attribute has changed. */ | |
2297 | /* Add (or update) attribute to hash. */ | |
2298 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2299 | ||
2300 | /* Restore route, if needed. */ | |
1defdda8 | 2301 | if (CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) |
50f74cf1 | 2302 | bgp_info_restore(rn, ri); |
2303 | ||
2304 | /* Mark if nexthop has changed. */ | |
2305 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1defdda8 | 2306 | SET_FLAG(ri->flags, BGP_PATH_IGP_CHANGED); |
50f74cf1 | 2307 | |
2308 | /* Unintern existing, set to new. */ | |
2309 | bgp_attr_unintern(&ri->attr); | |
2310 | ri->attr = attr_new; | |
2311 | ri->uptime = bgp_clock(); | |
2312 | } | |
2313 | ||
2314 | /* Perform route selection and update zebra, if required. */ | |
2315 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2316 | return ret; | |
2317 | } | |
2318 | ||
d3135ba3 | 2319 | /* |
2320 | * Install route entry into the VRF routing table and invoke route selection. | |
2321 | */ | |
2322 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2323 | struct prefix_evpn *evp, | |
4b7e6066 | 2324 | struct bgp_path_info *parent_ri) |
d3135ba3 | 2325 | { |
2326 | struct bgp_node *rn; | |
4b7e6066 | 2327 | struct bgp_path_info *ri; |
1ec31309 | 2328 | struct attr attr; |
d3135ba3 | 2329 | struct attr *attr_new; |
c4edf708 | 2330 | int ret = 0; |
d3135ba3 | 2331 | struct prefix p; |
2332 | struct prefix *pp = &p; | |
2333 | afi_t afi = 0; | |
2334 | safi_t safi = 0; | |
1eb88002 MK |
2335 | char buf[PREFIX_STRLEN]; |
2336 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2337 | |
2338 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2339 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2340 | |
1eb88002 | 2341 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2342 | zlog_debug( |
2343 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2344 | prefix2str(evp, buf, sizeof(buf)), | |
2345 | prefix2str(pp, buf1, sizeof(buf)), | |
2346 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2347 | } |
2348 | ||
d3135ba3 | 2349 | /* Create (or fetch) route within the VRF. */ |
2350 | /* NOTE: There is no RD here. */ | |
3714a385 | 2351 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2352 | afi = AFI_IP; |
2353 | safi = SAFI_UNICAST; | |
2354 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2355 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2356 | afi = AFI_IP6; |
2357 | safi = SAFI_UNICAST; | |
2358 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2359 | } else | |
2360 | return 0; | |
2361 | ||
1ec31309 | 2362 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2363 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2364 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2365 | * address for the rest of the code to flow through. In the case of IPv4, | |
2366 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2367 | */ |
2368 | bgp_attr_dup(&attr, parent_ri->attr); | |
2369 | if (afi == AFI_IP6) | |
2370 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2371 | else |
2372 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2373 | |
d3135ba3 | 2374 | /* Check if route entry is already present. */ |
2375 | for (ri = rn->info; ri; ri = ri->next) | |
2376 | if (ri->extra | |
4b7e6066 | 2377 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) |
d3135ba3 | 2378 | break; |
2379 | ||
2380 | if (!ri) { | |
2381 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2382 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2383 | |
2384 | /* Create new route with its attribute. */ | |
90f4f482 | 2385 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 2386 | parent_ri->peer, attr_new, rn); |
1defdda8 | 2387 | SET_FLAG(ri->flags, BGP_PATH_VALID); |
d3135ba3 | 2388 | bgp_info_extra_get(ri); |
528cd74f | 2389 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2390 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2391 | if (parent_ri->extra) { |
d3135ba3 | 2392 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2393 | sizeof(ri->extra->label)); |
2394 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2395 | } | |
d3135ba3 | 2396 | bgp_info_add(rn, ri); |
2397 | } else { | |
1ec31309 | 2398 | if (attrhash_cmp(ri->attr, &attr) |
1defdda8 | 2399 | && !CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) { |
d3135ba3 | 2400 | bgp_unlock_node(rn); |
2401 | return 0; | |
2402 | } | |
2403 | /* The attribute has changed. */ | |
2404 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2405 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2406 | |
2407 | /* Restore route, if needed. */ | |
1defdda8 | 2408 | if (CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) |
d3135ba3 | 2409 | bgp_info_restore(rn, ri); |
2410 | ||
2411 | /* Mark if nexthop has changed. */ | |
1ec31309 | 2412 | if ((afi == AFI_IP && |
2413 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
2414 | (afi == AFI_IP6 && | |
2415 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
2416 | &attr_new->mp_nexthop_global))) | |
1defdda8 | 2417 | SET_FLAG(ri->flags, BGP_PATH_IGP_CHANGED); |
d3135ba3 | 2418 | |
2419 | /* Unintern existing, set to new. */ | |
2420 | bgp_attr_unintern(&ri->attr); | |
2421 | ri->attr = attr_new; | |
2422 | ri->uptime = bgp_clock(); | |
2423 | } | |
2424 | ||
b49cdf4c DS |
2425 | bgp_aggregate_increment(bgp_vrf, &rn->p, ri, afi, safi); |
2426 | ||
d3135ba3 | 2427 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2428 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2429 | |
2430 | return ret; | |
2431 | } | |
2432 | ||
128ea8ab | 2433 | /* |
2434 | * Install route entry into the VNI routing table and invoke route selection. | |
2435 | */ | |
d62a17ae | 2436 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2437 | struct prefix_evpn *p, | |
4b7e6066 | 2438 | struct bgp_path_info *parent_ri) |
d62a17ae | 2439 | { |
2440 | struct bgp_node *rn; | |
4b7e6066 | 2441 | struct bgp_path_info *ri; |
d62a17ae | 2442 | struct attr *attr_new; |
2443 | int ret; | |
2444 | ||
2445 | /* Create (or fetch) route within the VNI. */ | |
2446 | /* NOTE: There is no RD here. */ | |
2447 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2448 | ||
2449 | /* Check if route entry is already present. */ | |
2450 | for (ri = rn->info; ri; ri = ri->next) | |
2451 | if (ri->extra | |
4b7e6066 | 2452 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) |
d62a17ae | 2453 | break; |
2454 | ||
2455 | if (!ri) { | |
2456 | /* Add (or update) attribute to hash. */ | |
2457 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2458 | ||
2459 | /* Create new route with its attribute. */ | |
90f4f482 | 2460 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 2461 | parent_ri->peer, attr_new, rn); |
1defdda8 | 2462 | SET_FLAG(ri->flags, BGP_PATH_VALID); |
d62a17ae | 2463 | bgp_info_extra_get(ri); |
528cd74f | 2464 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2465 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2466 | if (parent_ri->extra) { |
d62a17ae | 2467 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2468 | sizeof(ri->extra->label)); |
2469 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2470 | } | |
d62a17ae | 2471 | bgp_info_add(rn, ri); |
2472 | } else { | |
2473 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1defdda8 | 2474 | && !CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) { |
d62a17ae | 2475 | bgp_unlock_node(rn); |
2476 | return 0; | |
2477 | } | |
2478 | /* The attribute has changed. */ | |
2479 | /* Add (or update) attribute to hash. */ | |
2480 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2481 | ||
50f74cf1 | 2482 | /* Restore route, if needed. */ |
1defdda8 | 2483 | if (CHECK_FLAG(ri->flags, BGP_PATH_REMOVED)) |
50f74cf1 | 2484 | bgp_info_restore(rn, ri); |
2485 | ||
2486 | /* Mark if nexthop has changed. */ | |
2487 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1defdda8 | 2488 | SET_FLAG(ri->flags, BGP_PATH_IGP_CHANGED); |
50f74cf1 | 2489 | |
2490 | /* Unintern existing, set to new. */ | |
2491 | bgp_attr_unintern(&ri->attr); | |
2492 | ri->attr = attr_new; | |
2493 | ri->uptime = bgp_clock(); | |
2494 | } | |
2495 | ||
2496 | /* Perform route selection and update zebra, if required. */ | |
2497 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2498 | ||
2499 | return ret; | |
2500 | } | |
2501 | ||
2502 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2503 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2504 | struct prefix_evpn *p, |
4b7e6066 | 2505 | struct bgp_path_info *parent_ri) |
50f74cf1 | 2506 | { |
2507 | int ret; | |
2508 | struct bgp_node *rn; | |
4b7e6066 | 2509 | struct bgp_path_info *ri; |
50f74cf1 | 2510 | |
2511 | if (!es->route_table) | |
2512 | return 0; | |
2513 | ||
2514 | /* Locate route within the ESI. | |
2515 | * NOTE: There is no RD here. | |
2516 | */ | |
2517 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2518 | if (!rn) | |
2519 | return 0; | |
2520 | ||
2521 | /* Find matching route entry. */ | |
2522 | for (ri = rn->info; ri; ri = ri->next) | |
4b7e6066 DS |
2523 | if (ri->extra |
2524 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) | |
50f74cf1 | 2525 | break; |
d62a17ae | 2526 | |
50f74cf1 | 2527 | if (!ri) |
2528 | return 0; | |
d62a17ae | 2529 | |
50f74cf1 | 2530 | /* Mark entry for deletion */ |
2531 | bgp_info_delete(rn, ri); | |
d62a17ae | 2532 | |
2533 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2534 | ret = evpn_es_route_select_install(bgp, es, rn); |
2535 | ||
2536 | /* Unlock route node. */ | |
2537 | bgp_unlock_node(rn); | |
d62a17ae | 2538 | |
2539 | return ret; | |
128ea8ab | 2540 | } |
2541 | ||
d3135ba3 | 2542 | /* |
2543 | * Uninstall route entry from the VRF routing table and send message | |
2544 | * to zebra, if appropriate. | |
2545 | */ | |
2546 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2547 | struct prefix_evpn *evp, | |
4b7e6066 | 2548 | struct bgp_path_info *parent_ri) |
d3135ba3 | 2549 | { |
2550 | struct bgp_node *rn; | |
4b7e6066 | 2551 | struct bgp_path_info *ri; |
c4edf708 | 2552 | int ret = 0; |
d3135ba3 | 2553 | struct prefix p; |
2554 | struct prefix *pp = &p; | |
2555 | afi_t afi = 0; | |
2556 | safi_t safi = 0; | |
1eb88002 MK |
2557 | char buf[PREFIX_STRLEN]; |
2558 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2559 | |
2560 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2561 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2562 | |
1eb88002 | 2563 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2564 | zlog_debug( |
2565 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2566 | prefix2str(evp, buf, sizeof(buf)), | |
2567 | prefix2str(pp, buf1, sizeof(buf)), | |
2568 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2569 | } |
2570 | ||
d3135ba3 | 2571 | /* Locate route within the VRF. */ |
2572 | /* NOTE: There is no RD here. */ | |
3714a385 | 2573 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2574 | afi = AFI_IP; |
2575 | safi = SAFI_UNICAST; | |
2576 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2577 | } else { | |
2578 | afi = AFI_IP6; | |
2579 | safi = SAFI_UNICAST; | |
2580 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2581 | } | |
2582 | ||
2583 | if (!rn) | |
2584 | return 0; | |
2585 | ||
2586 | /* Find matching route entry. */ | |
2587 | for (ri = rn->info; ri; ri = ri->next) | |
2588 | if (ri->extra | |
4b7e6066 | 2589 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) |
d3135ba3 | 2590 | break; |
2591 | ||
2592 | if (!ri) | |
2593 | return 0; | |
2594 | ||
4c7a11d5 DS |
2595 | bgp_aggregate_decrement(bgp_vrf, &rn->p, ri, afi, safi); |
2596 | ||
d3135ba3 | 2597 | /* Mark entry for deletion */ |
2598 | bgp_info_delete(rn, ri); | |
2599 | ||
2600 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2601 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2602 | |
2603 | /* Unlock route node. */ | |
2604 | bgp_unlock_node(rn); | |
2605 | ||
2606 | return ret; | |
2607 | } | |
2608 | ||
128ea8ab | 2609 | /* |
2610 | * Uninstall route entry from the VNI routing table and send message | |
2611 | * to zebra, if appropriate. | |
2612 | */ | |
d62a17ae | 2613 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2614 | struct prefix_evpn *p, | |
4b7e6066 | 2615 | struct bgp_path_info *parent_ri) |
128ea8ab | 2616 | { |
d62a17ae | 2617 | struct bgp_node *rn; |
4b7e6066 | 2618 | struct bgp_path_info *ri; |
d62a17ae | 2619 | int ret; |
128ea8ab | 2620 | |
d62a17ae | 2621 | /* Locate route within the VNI. */ |
2622 | /* NOTE: There is no RD here. */ | |
2623 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2624 | if (!rn) | |
2625 | return 0; | |
128ea8ab | 2626 | |
d62a17ae | 2627 | /* Find matching route entry. */ |
2628 | for (ri = rn->info; ri; ri = ri->next) | |
2629 | if (ri->extra | |
4b7e6066 | 2630 | && (struct bgp_path_info *)ri->extra->parent == parent_ri) |
d62a17ae | 2631 | break; |
128ea8ab | 2632 | |
d62a17ae | 2633 | if (!ri) |
2634 | return 0; | |
128ea8ab | 2635 | |
d62a17ae | 2636 | /* Mark entry for deletion */ |
2637 | bgp_info_delete(rn, ri); | |
128ea8ab | 2638 | |
d62a17ae | 2639 | /* Perform route selection and update zebra, if required. */ |
2640 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2641 | |
d62a17ae | 2642 | /* Unlock route node. */ |
2643 | bgp_unlock_node(rn); | |
128ea8ab | 2644 | |
d62a17ae | 2645 | return ret; |
128ea8ab | 2646 | } |
2647 | ||
50f74cf1 | 2648 | /* |
2649 | * Given a prefix, see if it belongs to ES. | |
2650 | */ | |
2651 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2652 | struct evpnes *es) | |
2653 | { | |
2654 | /* if not an ES route return false */ | |
2655 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2656 | return 0; | |
2657 | ||
2658 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2659 | return 1; | |
2660 | ||
2661 | return 0; | |
2662 | } | |
2663 | ||
5ba238b7 MK |
2664 | /* |
2665 | * Given a route entry and a VRF, see if this route entry should be | |
2666 | * imported into the VRF i.e., RTs match. | |
2667 | */ | |
4b7e6066 DS |
2668 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
2669 | struct bgp_path_info *ri) | |
5ba238b7 MK |
2670 | { |
2671 | struct attr *attr = ri->attr; | |
2672 | struct ecommunity *ecom; | |
2673 | int i; | |
2674 | ||
2675 | assert(attr); | |
2676 | /* Route should have valid RT to be even considered. */ | |
2677 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2678 | return 0; | |
2679 | ||
2680 | ecom = attr->ecommunity; | |
2681 | if (!ecom || !ecom->size) | |
2682 | return 0; | |
2683 | ||
2684 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2685 | * matches, we're done. | |
2686 | */ | |
2687 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2688 | uint8_t *pnt; |
2689 | uint8_t type, sub_type; | |
5ba238b7 MK |
2690 | struct ecommunity_val *eval; |
2691 | struct ecommunity_val eval_tmp; | |
2692 | struct vrf_irt_node *irt; | |
2693 | ||
2694 | /* Only deal with RTs */ | |
2695 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2696 | eval = (struct ecommunity_val *)(ecom->val | |
2697 | + (i * ECOMMUNITY_SIZE)); | |
2698 | type = *pnt++; | |
2699 | sub_type = *pnt++; | |
2700 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2701 | continue; | |
2702 | ||
2703 | /* See if this RT matches specified VNIs import RTs */ | |
2704 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2705 | if (irt) |
5ba238b7 MK |
2706 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2707 | return 1; | |
2708 | ||
2709 | /* Also check for non-exact match. In this, we mask out the AS | |
2710 | * and | |
2711 | * only check on the local-admin sub-field. This is to | |
2712 | * facilitate using | |
2713 | * VNI as the RT for EBGP peering too. | |
2714 | */ | |
2715 | irt = NULL; | |
2716 | if (type == ECOMMUNITY_ENCODE_AS | |
2717 | || type == ECOMMUNITY_ENCODE_AS4 | |
2718 | || type == ECOMMUNITY_ENCODE_IP) { | |
2719 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2720 | mask_ecom_global_admin(&eval_tmp, eval); | |
2721 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2722 | } | |
5d9cbca2 | 2723 | if (irt) |
5ba238b7 MK |
2724 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2725 | return 1; | |
2726 | } | |
2727 | ||
2728 | return 0; | |
2729 | } | |
2730 | ||
128ea8ab | 2731 | /* |
2732 | * Given a route entry and a VNI, see if this route entry should be | |
2733 | * imported into the VNI i.e., RTs match. | |
2734 | */ | |
d62a17ae | 2735 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
4b7e6066 | 2736 | struct bgp_path_info *ri) |
d62a17ae | 2737 | { |
2738 | struct attr *attr = ri->attr; | |
2739 | struct ecommunity *ecom; | |
2740 | int i; | |
2741 | ||
2742 | assert(attr); | |
2743 | /* Route should have valid RT to be even considered. */ | |
2744 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2745 | return 0; | |
2746 | ||
2747 | ecom = attr->ecommunity; | |
2748 | if (!ecom || !ecom->size) | |
2749 | return 0; | |
2750 | ||
2751 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2752 | * matches, we're done. | |
2753 | */ | |
2754 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2755 | uint8_t *pnt; |
2756 | uint8_t type, sub_type; | |
d62a17ae | 2757 | struct ecommunity_val *eval; |
2758 | struct ecommunity_val eval_tmp; | |
2759 | struct irt_node *irt; | |
2760 | ||
2761 | /* Only deal with RTs */ | |
2762 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2763 | eval = (struct ecommunity_val *)(ecom->val | |
2764 | + (i * ECOMMUNITY_SIZE)); | |
2765 | type = *pnt++; | |
2766 | sub_type = *pnt++; | |
2767 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2768 | continue; | |
2769 | ||
2770 | /* See if this RT matches specified VNIs import RTs */ | |
2771 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2772 | if (irt) |
d62a17ae | 2773 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2774 | return 1; | |
2775 | ||
2776 | /* Also check for non-exact match. In this, we mask out the AS | |
2777 | * and | |
2778 | * only check on the local-admin sub-field. This is to | |
2779 | * facilitate using | |
2780 | * VNI as the RT for EBGP peering too. | |
2781 | */ | |
2782 | irt = NULL; | |
2783 | if (type == ECOMMUNITY_ENCODE_AS | |
2784 | || type == ECOMMUNITY_ENCODE_AS4 | |
2785 | || type == ECOMMUNITY_ENCODE_IP) { | |
2786 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2787 | mask_ecom_global_admin(&eval_tmp, eval); | |
2788 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2789 | } | |
b1ab0dfe | 2790 | if (irt) |
d62a17ae | 2791 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2792 | return 1; | |
2793 | } | |
2794 | ||
2795 | return 0; | |
128ea8ab | 2796 | } |
2797 | ||
50f74cf1 | 2798 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2799 | struct evpnes *es, | |
2800 | int install) | |
2801 | { | |
2802 | int ret; | |
2803 | afi_t afi; | |
2804 | safi_t safi; | |
2805 | char buf[PREFIX_STRLEN]; | |
2806 | char buf1[ESI_STR_LEN]; | |
2807 | struct bgp_node *rd_rn, *rn; | |
2808 | struct bgp_table *table; | |
4b7e6066 | 2809 | struct bgp_path_info *ri; |
50f74cf1 | 2810 | |
2811 | afi = AFI_L2VPN; | |
2812 | safi = SAFI_EVPN; | |
2813 | ||
2bb9eff4 DS |
2814 | /* |
2815 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2816 | * imported into this VRF. Note that we need to loop through all global |
2817 | * routes to determine which route matches the import rt on vrf | |
2818 | */ | |
2819 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2820 | rd_rn = bgp_route_next(rd_rn)) { | |
2821 | table = (struct bgp_table *)(rd_rn->info); | |
2822 | if (!table) | |
2823 | continue; | |
2824 | ||
2825 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2826 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2827 | ||
2828 | for (ri = rn->info; ri; ri = ri->next) { | |
2bb9eff4 DS |
2829 | /* |
2830 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2831 | * this ES. |
2832 | */ | |
1defdda8 | 2833 | if (!(CHECK_FLAG(ri->flags, BGP_PATH_VALID) |
50f74cf1 | 2834 | && ri->type == ZEBRA_ROUTE_BGP |
2835 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2836 | continue; | |
2837 | ||
2bb9eff4 DS |
2838 | if (!is_prefix_matching_for_es(evp, es)) |
2839 | continue; | |
50f74cf1 | 2840 | |
2bb9eff4 DS |
2841 | if (install) |
2842 | ret = install_evpn_route_entry_in_es( | |
2843 | bgp, es, evp, ri); | |
2844 | else | |
2845 | ret = uninstall_evpn_route_entry_in_es( | |
2846 | bgp, es, evp, ri); | |
2847 | ||
2848 | if (ret) { | |
af4c2728 | 2849 | flog_err( |
e50f7cfd | 2850 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2851 | "Failed to %s EVPN %s route in ESI %s", |
2852 | install ? "install" | |
2853 | : "uninstall", | |
2854 | prefix2str(evp, buf, | |
2855 | sizeof(buf)), | |
2856 | esi_to_str(&es->esi, buf1, | |
2857 | sizeof(buf1))); | |
2858 | return ret; | |
50f74cf1 | 2859 | } |
2860 | } | |
2861 | } | |
2862 | } | |
2863 | return 0; | |
2864 | } | |
2865 | ||
5ba238b7 MK |
2866 | /* |
2867 | * Install or uninstall mac-ip routes are appropriate for this | |
2868 | * particular VRF. | |
2869 | */ | |
996c9314 | 2870 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2871 | { |
2872 | afi_t afi; | |
2873 | safi_t safi; | |
2874 | struct bgp_node *rd_rn, *rn; | |
2875 | struct bgp_table *table; | |
4b7e6066 | 2876 | struct bgp_path_info *ri; |
5ba238b7 MK |
2877 | int ret; |
2878 | char buf[PREFIX_STRLEN]; | |
2879 | struct bgp *bgp_def = NULL; | |
2880 | ||
2881 | afi = AFI_L2VPN; | |
2882 | safi = SAFI_EVPN; | |
2883 | bgp_def = bgp_get_default(); | |
2884 | if (!bgp_def) | |
2885 | return -1; | |
2886 | ||
2887 | /* Walk entire global routing table and evaluate routes which could be | |
2888 | * imported into this VRF. Note that we need to loop through all global | |
2889 | * routes to determine which route matches the import rt on vrf | |
2890 | */ | |
2891 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2892 | rd_rn = bgp_route_next(rd_rn)) { | |
2893 | table = (struct bgp_table *)(rd_rn->info); | |
2894 | if (!table) | |
2895 | continue; | |
2896 | ||
2897 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2898 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2899 | ||
1eb88002 | 2900 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2901 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2902 | || evp->prefix.route_type | |
2903 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2904 | continue; |
2905 | ||
1eb88002 | 2906 | /* if not a mac+ip route skip this route */ |
3714a385 | 2907 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2908 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2909 | continue; |
2910 | ||
5ba238b7 MK |
2911 | for (ri = rn->info; ri; ri = ri->next) { |
2912 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2913 | * this VRF. |
2914 | */ | |
1defdda8 | 2915 | if (!(CHECK_FLAG(ri->flags, BGP_PATH_VALID) |
5ba238b7 MK |
2916 | && ri->type == ZEBRA_ROUTE_BGP |
2917 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2918 | continue; | |
2919 | ||
2920 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2921 | if (install) | |
996c9314 | 2922 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2923 | bgp_vrf, evp, ri); |
2924 | else | |
996c9314 | 2925 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2926 | bgp_vrf, evp, ri); |
2927 | ||
2928 | if (ret) { | |
af4c2728 | 2929 | flog_err( |
e50f7cfd | 2930 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2931 | "Failed to %s EVPN %s route in VRF %s", |
2932 | install ? "install" | |
2933 | : "uninstall", | |
2934 | prefix2str(evp, buf, | |
2935 | sizeof(buf)), | |
996c9314 LB |
2936 | vrf_id_to_name( |
2937 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2938 | return ret; |
2939 | } | |
2940 | } | |
2941 | } | |
2942 | } | |
2943 | } | |
2944 | ||
2945 | return 0; | |
2946 | } | |
2947 | ||
128ea8ab | 2948 | /* |
2949 | * Install or uninstall routes of specified type that are appropriate for this | |
2950 | * particular VNI. | |
2951 | */ | |
d62a17ae | 2952 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2953 | struct bgpevpn *vpn, | |
2954 | bgp_evpn_route_type rtype, | |
2955 | int install) | |
2956 | { | |
0291c246 MK |
2957 | afi_t afi; |
2958 | safi_t safi; | |
2959 | struct bgp_node *rd_rn, *rn; | |
2960 | struct bgp_table *table; | |
4b7e6066 | 2961 | struct bgp_path_info *ri; |
0291c246 | 2962 | int ret; |
d62a17ae | 2963 | |
2964 | afi = AFI_L2VPN; | |
2965 | safi = SAFI_EVPN; | |
2966 | ||
2967 | /* Walk entire global routing table and evaluate routes which could be | |
2968 | * imported into this VPN. Note that we cannot just look at the routes | |
2969 | * for | |
2970 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2971 | * RD. | |
2972 | */ | |
2973 | /* EVPN routes are a 2-level table. */ | |
2974 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2975 | rd_rn = bgp_route_next(rd_rn)) { | |
2976 | table = (struct bgp_table *)(rd_rn->info); | |
2977 | if (!table) | |
2978 | continue; | |
2979 | ||
2980 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2981 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2982 | ||
2983 | if (evp->prefix.route_type != rtype) | |
2984 | continue; | |
2985 | ||
2986 | for (ri = rn->info; ri; ri = ri->next) { | |
2987 | /* Consider "valid" remote routes applicable for | |
2988 | * this VNI. */ | |
1defdda8 | 2989 | if (!(CHECK_FLAG(ri->flags, BGP_PATH_VALID) |
d62a17ae | 2990 | && ri->type == ZEBRA_ROUTE_BGP |
2991 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2992 | continue; | |
2993 | ||
2994 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2995 | if (install) | |
2996 | ret = install_evpn_route_entry( | |
60466a63 | 2997 | bgp, vpn, evp, ri); |
d62a17ae | 2998 | else |
2999 | ret = uninstall_evpn_route_entry( | |
3000 | bgp, vpn, evp, ri); | |
3001 | ||
3002 | if (ret) { | |
af4c2728 | 3003 | flog_err( |
e50f7cfd | 3004 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3005 | "%u: Failed to %s EVPN %s route in VNI %u", |
3006 | bgp->vrf_id, | |
3007 | install ? "install" | |
3008 | : "uninstall", | |
3009 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3010 | ? "MACIP" | |
3011 | : "IMET", | |
3012 | vpn->vni); | |
3013 | return ret; | |
3014 | } | |
3015 | } | |
3016 | } | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | return 0; | |
128ea8ab | 3021 | } |
3022 | ||
50f74cf1 | 3023 | /* Install any existing remote ES routes applicable for this ES into its routing |
3024 | * table. This is invoked when ES comes up. | |
3025 | */ | |
3026 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3027 | { | |
3028 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3029 | } | |
3030 | ||
3031 | ||
5ba238b7 | 3032 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3033 | * is invoked upon l3vni-add or l3vni import rt change |
3034 | */ | |
5ba238b7 MK |
3035 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3036 | { | |
3037 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3038 | return 0; | |
3039 | } | |
3040 | ||
128ea8ab | 3041 | /* |
3042 | * Install any existing remote routes applicable for this VNI into its | |
3043 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3044 | * RT is changed. | |
3045 | */ | |
d62a17ae | 3046 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3047 | { |
d62a17ae | 3048 | int ret; |
128ea8ab | 3049 | |
d62a17ae | 3050 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3051 | * for this VNI. | |
3052 | */ | |
3053 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3054 | 1); | |
3055 | if (ret) | |
3056 | return ret; | |
128ea8ab | 3057 | |
d62a17ae | 3058 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3059 | 1); | |
128ea8ab | 3060 | } |
3061 | ||
5ba238b7 MK |
3062 | /* uninstall routes from l3vni vrf. */ |
3063 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3064 | { | |
3065 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3066 | return 0; | |
3067 | } | |
3068 | ||
90e60aa7 | 3069 | /* |
3070 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3071 | * this is invoked is upon an import RT change. | |
3072 | */ | |
d62a17ae | 3073 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3074 | { |
d62a17ae | 3075 | int ret; |
90e60aa7 | 3076 | |
d62a17ae | 3077 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3078 | * applicable | |
3079 | * for this VNI. | |
3080 | */ | |
3081 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3082 | 0); | |
3083 | if (ret) | |
3084 | return ret; | |
90e60aa7 | 3085 | |
d62a17ae | 3086 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3087 | 0); | |
90e60aa7 | 3088 | } |
3089 | ||
50f74cf1 | 3090 | /* Install or unistall route in ES */ |
3091 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3092 | afi_t afi, safi_t safi, | |
3093 | struct prefix_evpn *evp, | |
4b7e6066 | 3094 | struct bgp_path_info *ri, int install) |
50f74cf1 | 3095 | { |
3096 | int ret = 0; | |
3097 | char buf[ESI_STR_LEN]; | |
3098 | ||
3099 | if (install) | |
3100 | ret = install_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3101 | else | |
3102 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3103 | ||
3104 | if (ret) { | |
af4c2728 | 3105 | flog_err( |
e50f7cfd | 3106 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3107 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3108 | install ? "install" : "uninstall", "ES", | |
3109 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3110 | return ret; |
3111 | } | |
3112 | return 0; | |
3113 | } | |
3114 | ||
d3135ba3 | 3115 | /* |
3116 | * Install or uninstall route in matching VRFs (list). | |
3117 | */ | |
3118 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3119 | safi_t safi, struct prefix_evpn *evp, | |
4b7e6066 | 3120 | struct bgp_path_info *ri, |
d3135ba3 | 3121 | struct list *vrfs, int install) |
3122 | { | |
3123 | char buf[PREFIX2STR_BUFFER]; | |
3124 | struct bgp *bgp_vrf; | |
3125 | struct listnode *node, *nnode; | |
3126 | ||
90264d64 | 3127 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3128 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3129 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3130 | return 0; |
3131 | ||
90264d64 | 3132 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3133 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3134 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3135 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3136 | return 0; |
3137 | ||
d3135ba3 | 3138 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3139 | int ret; | |
3140 | ||
3141 | if (install) | |
996c9314 | 3142 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 3143 | else |
996c9314 LB |
3144 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3145 | ri); | |
d3135ba3 | 3146 | |
3147 | if (ret) { | |
e50f7cfd | 3148 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3149 | "%u: Failed to %s prefix %s in VRF %s", |
3150 | bgp_def->vrf_id, | |
3151 | install ? "install" : "uninstall", | |
3152 | prefix2str(evp, buf, sizeof(buf)), | |
3153 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3154 | return ret; |
3155 | } | |
3156 | } | |
3157 | ||
3158 | return 0; | |
3159 | } | |
3160 | ||
128ea8ab | 3161 | /* |
3162 | * Install or uninstall route in matching VNIs (list). | |
3163 | */ | |
d62a17ae | 3164 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3165 | safi_t safi, struct prefix_evpn *evp, | |
4b7e6066 | 3166 | struct bgp_path_info *ri, |
d62a17ae | 3167 | struct list *vnis, int install) |
128ea8ab | 3168 | { |
d62a17ae | 3169 | struct bgpevpn *vpn; |
3170 | struct listnode *node, *nnode; | |
128ea8ab | 3171 | |
d62a17ae | 3172 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3173 | int ret; | |
128ea8ab | 3174 | |
d62a17ae | 3175 | if (!is_vni_live(vpn)) |
3176 | continue; | |
128ea8ab | 3177 | |
d62a17ae | 3178 | if (install) |
3179 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
3180 | else | |
3181 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 3182 | |
d62a17ae | 3183 | if (ret) { |
1c50c1c0 QY |
3184 | flog_err(EC_BGP_EVPN_FAIL, |
3185 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3186 | bgp->vrf_id, install ? "install" : "uninstall", | |
3187 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3188 | ? "MACIP" | |
3189 | : "IMET", | |
3190 | vpn->vni); | |
d62a17ae | 3191 | return ret; |
3192 | } | |
3193 | } | |
128ea8ab | 3194 | |
d62a17ae | 3195 | return 0; |
128ea8ab | 3196 | } |
3197 | ||
3198 | /* | |
50f74cf1 | 3199 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3200 | */ |
d62a17ae | 3201 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 DS |
3202 | struct prefix *p, |
3203 | struct bgp_path_info *ri, int import) | |
d62a17ae | 3204 | { |
3205 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3206 | struct attr *attr = ri->attr; | |
3207 | struct ecommunity *ecom; | |
3208 | int i; | |
3209 | ||
3210 | assert(attr); | |
3211 | ||
50f74cf1 | 3212 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3213 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3214 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3215 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3216 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3217 | return 0; |
3218 | ||
3219 | /* If we don't have Route Target, nothing much to do. */ | |
3220 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3221 | return 0; | |
3222 | ||
3223 | ecom = attr->ecommunity; | |
3224 | if (!ecom || !ecom->size) | |
3225 | return -1; | |
3226 | ||
50f74cf1 | 3227 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3228 | * attached to the route */ | |
d62a17ae | 3229 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3230 | uint8_t *pnt; |
3231 | uint8_t type, sub_type; | |
d62a17ae | 3232 | struct ecommunity_val *eval; |
3233 | struct ecommunity_val eval_tmp; | |
996c9314 | 3234 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3235 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3236 | struct evpnes *es; |
d62a17ae | 3237 | |
3238 | /* Only deal with RTs */ | |
3239 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3240 | eval = (struct ecommunity_val *)(ecom->val | |
3241 | + (i * ECOMMUNITY_SIZE)); | |
3242 | type = *pnt++; | |
3243 | sub_type = *pnt++; | |
3244 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3245 | continue; | |
3246 | ||
50f74cf1 | 3247 | /* |
3248 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3249 | * IMET route is imported into VNI table. | |
3250 | * prefix routes are imported into VRF table. | |
523cafc4 | 3251 | */ |
50f74cf1 | 3252 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3253 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3254 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3255 | |
50f74cf1 | 3256 | irt = lookup_import_rt(bgp, eval); |
3257 | if (irt) | |
3258 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3259 | evp, ri, | |
3260 | irt->vnis, | |
3261 | import); | |
3262 | ||
3263 | vrf_irt = lookup_vrf_import_rt(eval); | |
3264 | if (vrf_irt) | |
3265 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3266 | evp, ri, | |
3267 | vrf_irt->vrfs, | |
3268 | import); | |
3269 | ||
3270 | /* Also check for non-exact match. | |
3271 | * In this, we mask out the AS and | |
3272 | * only check on the local-admin sub-field. | |
3273 | * This is to facilitate using | |
3274 | * VNI as the RT for EBGP peering too. | |
3275 | */ | |
3276 | irt = NULL; | |
3277 | vrf_irt = NULL; | |
3278 | if (type == ECOMMUNITY_ENCODE_AS | |
3279 | || type == ECOMMUNITY_ENCODE_AS4 | |
3280 | || type == ECOMMUNITY_ENCODE_IP) { | |
3281 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3282 | mask_ecom_global_admin(&eval_tmp, eval); | |
3283 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3284 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3285 | } | |
3286 | ||
3287 | if (irt) | |
3288 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3289 | evp, ri, | |
3290 | irt->vnis, | |
3291 | import); | |
3292 | if (vrf_irt) | |
3293 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3294 | evp, ri, | |
3295 | vrf_irt->vrfs, | |
3296 | import); | |
3297 | } | |
3298 | ||
3299 | /* es route is imported into the es table */ | |
3300 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3301 | ||
3302 | /* we will match based on the entire esi to avoid | |
3303 | * imoort of an es route for esi2 into esi1 | |
3304 | */ | |
3305 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3306 | if (es && is_es_local(es)) | |
3307 | install_uninstall_route_in_es(bgp, es, | |
3308 | afi, safi, | |
3309 | evp, ri, import); | |
d62a17ae | 3310 | } |
d62a17ae | 3311 | } |
3312 | ||
3313 | return 0; | |
128ea8ab | 3314 | } |
3315 | ||
2bb9eff4 DS |
3316 | /* |
3317 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3318 | * routes | |
3319 | */ | |
80b140af MK |
3320 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3321 | { | |
3322 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3323 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3324 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3325 | |
3326 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3327 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3328 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3329 | } |
3330 | ||
2bb9eff4 DS |
3331 | /* |
3332 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3333 | * routes | |
3334 | */ | |
80b140af MK |
3335 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3336 | { | |
3337 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3338 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3339 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3340 | |
3341 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3342 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3343 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3344 | } |
3345 | ||
676f83b9 | 3346 | /* |
3347 | * update and advertise local routes for a VRF as type-5 routes. | |
3348 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3349 | * done in the global route table using the routes which already exist in the | |
3350 | * VRF routing table | |
3351 | */ | |
80b140af | 3352 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3353 | { |
80b140af MK |
3354 | /* skip if the RD is configured */ |
3355 | if (is_vrf_rd_configured(bgp_vrf)) | |
3356 | return; | |
3357 | ||
3358 | /* derive the RD for the VRF based on new router-id */ | |
3359 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3360 | ||
3361 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3362 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3363 | } |
3364 | ||
3365 | /* | |
3366 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3367 | * This is invoked upon VRF RD change. The processing is done only from global | |
3368 | * table. | |
3369 | */ | |
80b140af | 3370 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3371 | { |
80b140af MK |
3372 | /* skip if the RD is configured */ |
3373 | if (is_vrf_rd_configured(bgp_vrf)) | |
3374 | return; | |
3375 | ||
3376 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3377 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3378 | } |
3379 | ||
90e60aa7 | 3380 | /* |
3381 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3382 | * change. Note that the processing is done only on the global route table | |
3383 | * using routes that already exist in the per-VNI table. | |
3384 | */ | |
d62a17ae | 3385 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3386 | { | |
3387 | struct prefix_evpn p; | |
3388 | struct bgp_node *rn, *global_rn; | |
4b7e6066 | 3389 | struct bgp_path_info *ri, *global_ri; |
d62a17ae | 3390 | struct attr *attr; |
3391 | afi_t afi = AFI_L2VPN; | |
3392 | safi_t safi = SAFI_EVPN; | |
3393 | ||
3394 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3395 | * attributes to create and advertise the type-3 route for this VNI | |
3396 | * in the global table. | |
3397 | */ | |
3398 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3399 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3400 | if (!rn) /* unexpected */ | |
3401 | return 0; | |
3402 | for (ri = rn->info; ri; ri = ri->next) | |
3403 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
3404 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3405 | break; | |
3406 | if (!ri) /* unexpected */ | |
3407 | return 0; | |
3408 | attr = ri->attr; | |
3409 | ||
3410 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3411 | (struct prefix *)&p, &vpn->prd); | |
f07e1c99 | 3412 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, &ri, |
3413 | 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3414 | |
3415 | /* Schedule for processing and unlock node. */ | |
3416 | bgp_process(bgp, global_rn, afi, safi); | |
3417 | bgp_unlock_node(global_rn); | |
3418 | ||
3419 | /* Now, walk this VNI's route table and use the route and its attribute | |
3420 | * to create and schedule route in global table. | |
3421 | */ | |
3422 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3423 | rn = bgp_route_next(rn)) { | |
3424 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3425 | ||
3426 | /* Identify MAC-IP local routes. */ | |
3427 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3428 | continue; | |
3429 | ||
3430 | for (ri = rn->info; ri; ri = ri->next) | |
3431 | if (ri->peer == bgp->peer_self | |
3432 | && ri->type == ZEBRA_ROUTE_BGP | |
3433 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3434 | break; | |
3435 | if (!ri) | |
3436 | continue; | |
3437 | ||
3438 | /* Create route in global routing table using this route entry's | |
3439 | * attribute. | |
3440 | */ | |
3441 | attr = ri->attr; | |
3442 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3443 | (struct prefix *)evp, &vpn->prd); | |
3444 | assert(global_rn); | |
3445 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
f07e1c99 | 3446 | &global_ri, 0, |
3447 | mac_mobility_seqnum(attr)); | |
d62a17ae | 3448 | |
3449 | /* Schedule for processing and unlock node. */ | |
3450 | bgp_process(bgp, global_rn, afi, safi); | |
3451 | bgp_unlock_node(global_rn); | |
3452 | } | |
3453 | ||
3454 | return 0; | |
90e60aa7 | 3455 | } |
3456 | ||
3457 | /* | |
3458 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3459 | * table. Invoked upon router-id change. | |
3460 | */ | |
d62a17ae | 3461 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3462 | { |
d62a17ae | 3463 | int ret; |
3464 | struct prefix_evpn p; | |
3465 | struct bgp_node *global_rn; | |
4b7e6066 | 3466 | struct bgp_path_info *ri; |
d62a17ae | 3467 | afi_t afi = AFI_L2VPN; |
3468 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3469 | |
d62a17ae | 3470 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3471 | * for this VNI - from the global table. | |
3472 | */ | |
3473 | ret = delete_global_type2_routes(bgp, vpn); | |
3474 | if (ret) | |
3475 | return ret; | |
90e60aa7 | 3476 | |
d62a17ae | 3477 | /* Remove type-3 route for this VNI from global table. */ |
3478 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3479 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3480 | (struct prefix *)&p, &vpn->prd); | |
3481 | if (global_rn) { | |
3482 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 3483 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
90e60aa7 | 3484 | |
d62a17ae | 3485 | /* Schedule for processing - withdraws to peers happen from |
3486 | * this table. | |
3487 | */ | |
3488 | if (ri) | |
3489 | bgp_process(bgp, global_rn, afi, safi); | |
3490 | bgp_unlock_node(global_rn); | |
3491 | } | |
90e60aa7 | 3492 | |
d62a17ae | 3493 | return 0; |
90e60aa7 | 3494 | } |
3495 | ||
2d48ee25 | 3496 | /* |
3497 | * Handle router-id change. Update and advertise local routes corresponding | |
3498 | * to this VNI from peers. Note that this is invoked after updating the | |
3499 | * router-id. The routes in the per-VNI table are used to create routes in | |
3500 | * the global table and schedule them. | |
3501 | */ | |
d62a17ae | 3502 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3503 | { |
0a1a07cb | 3504 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3505 | |
d62a17ae | 3506 | /* Skip VNIs with configured RD. */ |
3507 | if (is_rd_configured(vpn)) | |
3508 | return; | |
2d48ee25 | 3509 | |
d62a17ae | 3510 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3511 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3512 | } |
3513 | ||
3514 | /* | |
3515 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3516 | * to this VNI from peers. Note that this is invoked prior to updating | |
3517 | * the router-id and is done only on the global route table, the routes | |
3518 | * are needed in the per-VNI table to re-advertise with new router id. | |
3519 | */ | |
d62a17ae | 3520 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3521 | { |
0a1a07cb | 3522 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3523 | |
d62a17ae | 3524 | /* Skip VNIs with configured RD. */ |
3525 | if (is_rd_configured(vpn)) | |
3526 | return; | |
2d48ee25 | 3527 | |
d62a17ae | 3528 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3529 | } |
3530 | ||
128ea8ab | 3531 | /* |
3532 | * Process received EVPN type-2 route (advertise or withdraw). | |
3533 | */ | |
d62a17ae | 3534 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3535 | struct attr *attr, uint8_t *pfx, int psize, |
3536 | uint32_t addpath_id) | |
d62a17ae | 3537 | { |
3538 | struct prefix_rd prd; | |
3539 | struct prefix_evpn p; | |
554cd77a | 3540 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3541 | uint8_t ipaddr_len; |
3542 | uint8_t macaddr_len; | |
b57ba6d2 | 3543 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3544 | uint32_t num_labels = 0; |
554cd77a | 3545 | uint32_t eth_tag; |
d62a17ae | 3546 | int ret; |
3547 | ||
3548 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3549 | * additional 3 bytes if there is a second label (VNI): | |
3550 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3551 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3552 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3553 | */ | |
3554 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3555 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3556 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3557 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3558 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3559 | return -1; |
3560 | } | |
3561 | ||
554cd77a VB |
3562 | memset(&evpn, 0, sizeof(evpn)); |
3563 | ||
d62a17ae | 3564 | /* Make prefix_rd */ |
3565 | prd.family = AF_UNSPEC; | |
3566 | prd.prefixlen = 64; | |
3567 | memcpy(&prd.val, pfx, 8); | |
3568 | pfx += 8; | |
3569 | ||
3570 | /* Make EVPN prefix. */ | |
3571 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3572 | p.family = AF_EVPN; |
50f74cf1 | 3573 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3574 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3575 | ||
554cd77a VB |
3576 | /* Copy Ethernet Seg Identifier */ |
3577 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3578 | pfx += ESI_LEN; | |
d62a17ae | 3579 | |
554cd77a VB |
3580 | /* Copy Ethernet Tag */ |
3581 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3582 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3583 | pfx += 4; |
3584 | ||
3585 | /* Get the MAC Addr len */ | |
3586 | macaddr_len = *pfx++; | |
3587 | ||
3588 | /* Get the MAC Addr */ | |
28328ea9 | 3589 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3590 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3591 | pfx += ETH_ALEN; |
d62a17ae | 3592 | } else { |
af4c2728 | 3593 | flog_err( |
e50f7cfd | 3594 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3595 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3596 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3597 | return -1; | |
3598 | } | |
3599 | ||
3600 | ||
3601 | /* Get the IP. */ | |
3602 | ipaddr_len = *pfx++; | |
3603 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3604 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3605 | flog_err( |
e50f7cfd | 3606 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3607 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3608 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3609 | return -1; | |
3610 | } | |
3611 | ||
3612 | if (ipaddr_len) { | |
3613 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3614 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3615 | ? IPADDR_V4 |
3616 | : IPADDR_V6; | |
3714a385 | 3617 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3618 | } |
3619 | pfx += ipaddr_len; | |
3620 | ||
b57ba6d2 MK |
3621 | /* Get the VNI(s). Stored as bytes here. */ |
3622 | num_labels++; | |
3623 | memset(label, 0, sizeof(label)); | |
3624 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3625 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3626 | psize -= (33 + ipaddr_len); |
3627 | /* Do we have a second VNI? */ | |
3628 | if (psize) { | |
3629 | num_labels++; | |
3630 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3631 | /* |
3632 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3633 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3634 | * the next field | |
6b11bd8d | 3635 | */ |
b57ba6d2 | 3636 | } |
d62a17ae | 3637 | |
3638 | /* Process the route. */ | |
3639 | if (attr) | |
3640 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3641 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3642 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3643 | else |
3644 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3645 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3646 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3647 | return ret; |
128ea8ab | 3648 | } |
3649 | ||
3650 | /* | |
3651 | * Process received EVPN type-3 route (advertise or withdraw). | |
3652 | */ | |
d62a17ae | 3653 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3654 | struct attr *attr, uint8_t *pfx, int psize, |
3655 | uint32_t addpath_id) | |
d62a17ae | 3656 | { |
3657 | struct prefix_rd prd; | |
3658 | struct prefix_evpn p; | |
d7c0a89a | 3659 | uint8_t ipaddr_len; |
554cd77a | 3660 | uint32_t eth_tag; |
d62a17ae | 3661 | int ret; |
3662 | ||
3663 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3664 | * IP len (1) and IP (4 or 16). | |
3665 | */ | |
3666 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3667 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3668 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3669 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3670 | return -1; |
3671 | } | |
3672 | ||
7fd077aa | 3673 | /* If PMSI is present, log if it is anything other than IR. |
3674 | * Note: We just simply ignore the values as it is not clear if | |
3675 | * doing anything else is better. | |
3676 | */ | |
3677 | if (attr && | |
3678 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3679 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
ade6974d | 3680 | flog_warn( |
e50f7cfd | 3681 | EC_BGP_EVPN_PMSI_PRESENT, |
ade6974d QY |
3682 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
3683 | peer->bgp->vrf_id, peer->host, | |
3684 | attr->pmsi_tnl_type); | |
7fd077aa | 3685 | } |
3686 | } | |
3687 | ||
d62a17ae | 3688 | /* Make prefix_rd */ |
3689 | prd.family = AF_UNSPEC; | |
3690 | prd.prefixlen = 64; | |
3691 | memcpy(&prd.val, pfx, 8); | |
3692 | pfx += 8; | |
3693 | ||
3694 | /* Make EVPN prefix. */ | |
3695 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3696 | p.family = AF_EVPN; |
50f74cf1 | 3697 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3698 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3699 | ||
554cd77a VB |
3700 | /* Copy Ethernet Tag */ |
3701 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3702 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3703 | pfx += 4; |
3704 | ||
3705 | /* Get the IP. */ | |
3706 | ipaddr_len = *pfx++; | |
3707 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3708 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3709 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3710 | } else { |
af4c2728 | 3711 | flog_err( |
e50f7cfd | 3712 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3713 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3714 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3715 | return -1; | |
3716 | } | |
3717 | ||
3718 | /* Process the route. */ | |
3719 | if (attr) | |
3720 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3721 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3722 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3723 | else |
3724 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3725 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3726 | &prd, NULL, 0, NULL); |
d62a17ae | 3727 | return ret; |
128ea8ab | 3728 | } |
3729 | ||
50f74cf1 | 3730 | /* |
3731 | * Process received EVPN type-4 route (advertise or withdraw). | |
3732 | */ | |
3733 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3734 | struct attr *attr, uint8_t *pfx, int psize, | |
3735 | uint32_t addpath_id) | |
3736 | { | |
3737 | int ret; | |
3738 | esi_t esi; | |
3739 | uint8_t ipaddr_len; | |
3740 | struct in_addr vtep_ip; | |
3741 | struct prefix_rd prd; | |
3742 | struct prefix_evpn p; | |
3743 | ||
3744 | /* Type-4 route should be either 23 or 35 bytes | |
3745 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3746 | */ | |
3747 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3748 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3749 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3750 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3751 | return -1; |
3752 | } | |
3753 | ||
3754 | /* Make prefix_rd */ | |
3755 | prd.family = AF_UNSPEC; | |
3756 | prd.prefixlen = 64; | |
3757 | memcpy(&prd.val, pfx, 8); | |
3758 | pfx += 8; | |
3759 | ||
3760 | /* get the ESI */ | |
3761 | memcpy(&esi, pfx, ESI_BYTES); | |
3762 | pfx += ESI_BYTES; | |
3763 | ||
3764 | ||
3765 | /* Get the IP. */ | |
3766 | ipaddr_len = *pfx++; | |
3767 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3768 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3769 | } else { | |
af4c2728 | 3770 | flog_err( |
e50f7cfd | 3771 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 3772 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3773 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3774 | return -1; | |
3775 | } | |
3776 | ||
3777 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3778 | /* Process the route. */ | |
3779 | if (attr) { | |
3780 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3781 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3782 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3783 | } else { |
50f74cf1 | 3784 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3785 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3786 | &prd, NULL, 0, NULL); | |
3787 | } | |
3788 | return ret; | |
3789 | } | |
3790 | ||
3791 | ||
128ea8ab | 3792 | /* |
3793 | * Process received EVPN type-5 route (advertise or withdraw). | |
3794 | */ | |
d62a17ae | 3795 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3796 | struct attr *attr, uint8_t *pfx, int psize, |
3797 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3798 | { |
3799 | struct prefix_rd prd; | |
3800 | struct prefix_evpn p; | |
3801 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3802 | uint8_t ippfx_len; |
3803 | uint32_t eth_tag; | |
b57ba6d2 | 3804 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3805 | int ret; |
3806 | ||
3807 | /* Type-5 route should be 34 or 58 bytes: | |
3808 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3809 | * GW (4 or 16) and VNI (3). | |
3810 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3811 | */ | |
3812 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3813 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3814 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3815 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3816 | return -1; |
3817 | } | |
3818 | ||
3819 | /* Make prefix_rd */ | |
3820 | prd.family = AF_UNSPEC; | |
3821 | prd.prefixlen = 64; | |
3822 | memcpy(&prd.val, pfx, 8); | |
3823 | pfx += 8; | |
3824 | ||
3825 | /* Make EVPN prefix. */ | |
3826 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3827 | p.family = AF_EVPN; |
50f74cf1 | 3828 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3829 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3830 | ||
3831 | /* Additional information outside of prefix - ESI and GW IP */ | |
3832 | memset(&evpn, 0, sizeof(evpn)); | |
3833 | ||
3834 | /* Fetch ESI */ | |
3835 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3836 | pfx += 10; | |
3837 | ||
3838 | /* Fetch Ethernet Tag. */ | |
3839 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3840 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3841 | pfx += 4; |
3842 | ||
3843 | /* Fetch IP prefix length. */ | |
3844 | ippfx_len = *pfx++; | |
3845 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3846 | flog_err( |
e50f7cfd | 3847 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3848 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3849 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3850 | return -1; | |
3851 | } | |
3714a385 | 3852 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3853 | |
3854 | /* Determine IPv4 or IPv6 prefix */ | |
3855 | /* Since the address and GW are from the same family, this just becomes | |
3856 | * a simple check on the total size. | |
3857 | */ | |
3858 | if (psize == 34) { | |
3714a385 | 3859 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3860 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3861 | pfx += 4; |
3862 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3863 | pfx += 4; | |
d62a17ae | 3864 | } else { |
3714a385 | 3865 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3866 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3867 | pfx += 16; |
3868 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3869 | pfx += 16; | |
d62a17ae | 3870 | } |
3871 | ||
b57ba6d2 MK |
3872 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3873 | memset(&label, 0, sizeof(label)); | |
3874 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3875 | |
3876 | /* | |
3877 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3878 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3879 | * field | |
6b11bd8d | 3880 | */ |
d62a17ae | 3881 | |
3882 | /* Process the route. */ | |
3883 | if (!withdraw) | |
3884 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3885 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3886 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3887 | else |
3888 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3889 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3890 | &prd, &label, 1, &evpn); |
d62a17ae | 3891 | |
3892 | return ret; | |
3893 | } | |
3894 | ||
3895 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3896 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3897 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3898 | { |
3899 | int len; | |
3900 | char temp[16]; | |
3901 | struct evpn_addr *p_evpn_p; | |
3902 | ||
3903 | memset(&temp, 0, 16); | |
b03b8898 | 3904 | if (p->family != AF_EVPN) |
d62a17ae | 3905 | return; |
3906 | p_evpn_p = &(p->u.prefix_evpn); | |
3907 | ||
e9fc2840 | 3908 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3909 | IP and GW-IP have to be both ipv4 or ipv6 |
3910 | */ | |
3714a385 | 3911 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3912 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3913 | else |
e9fc2840 | 3914 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3915 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3916 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3917 | stream_put(s, prd->val, 8); | |
0af35d90 | 3918 | if (attr) |
d62a17ae | 3919 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3920 | else | |
3921 | stream_put(s, &temp, 10); | |
3714a385 | 3922 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3923 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3924 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3925 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3926 | else |
3714a385 | 3927 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3928 | if (attr) { |
3714a385 | 3929 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3930 | stream_put_ipv4(s, |
3931 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3932 | else | |
3933 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3934 | } else { | |
3714a385 | 3935 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3936 | stream_put_ipv4(s, 0); |
3937 | else | |
3938 | stream_put(s, &temp, 16); | |
3939 | } | |
3940 | ||
b57ba6d2 | 3941 | if (num_labels) |
d62a17ae | 3942 | stream_put(s, label, 3); |
3943 | else | |
3944 | stream_put3(s, 0); | |
128ea8ab | 3945 | } |
3946 | ||
3947 | /* | |
3948 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3949 | */ | |
d62a17ae | 3950 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3951 | { |
d62a17ae | 3952 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3953 | |
d62a17ae | 3954 | /* Remove EVPN routes and schedule for processing. */ |
3955 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3956 | |
d62a17ae | 3957 | /* Clear "live" flag and see if hash needs to be freed. */ |
3958 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3959 | if (!is_vni_configured(vpn)) | |
3960 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3961 | } |
3962 | ||
3963 | /* | |
3964 | * Free a VNI entry; iterator function called during cleanup. | |
3965 | */ | |
d62a17ae | 3966 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3967 | { |
0a1a07cb | 3968 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3969 | |
d62a17ae | 3970 | delete_all_vni_routes(bgp, vpn); |
3971 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3972 | } |
3973 | ||
c581d8b0 MK |
3974 | /* |
3975 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3976 | */ | |
3977 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3978 | { | |
10ebe1ab MK |
3979 | struct bgp *bgp_def = NULL; |
3980 | ||
c581d8b0 | 3981 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3982 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3983 | ||
3984 | /* Map RT to VRF */ | |
3985 | bgp_def = bgp_get_default(); | |
3986 | if (!bgp_def) | |
3987 | return; | |
3988 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3989 | } |
3990 | ||
3991 | /* | |
3992 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3993 | */ | |
3994 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3995 | { | |
3996 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
3997 | } | |
3998 | ||
3999 | /* | |
4000 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4001 | */ | |
4002 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4003 | { | |
4004 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4005 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4006 | } | |
4007 | ||
4008 | /* | |
4009 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4010 | */ | |
4011 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4012 | { | |
4013 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4014 | } | |
128ea8ab | 4015 | |
f1f8b53c MK |
4016 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4017 | { | |
4018 | struct bgp *bgp_def = NULL; | |
4019 | struct listnode *node = NULL; | |
4020 | struct bgpevpn *vpn = NULL; | |
4021 | ||
4022 | bgp_def = bgp_get_default(); | |
4023 | if (!bgp_def) | |
4024 | return; | |
4025 | ||
4992b4ae MK |
4026 | /* update all type-5 routes */ |
4027 | update_advertise_vrf_routes(bgp_vrf); | |
4028 | ||
4029 | /* update all type-2 routes */ | |
f1f8b53c MK |
4030 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4031 | update_routes_for_vni(bgp_def, vpn); | |
4032 | } | |
4033 | ||
bf1061d8 VB |
4034 | /* |
4035 | * Handle autort change for a given VNI. | |
4036 | */ | |
4037 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4038 | { | |
4039 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 | 4040 | |
bf1061d8 VB |
4041 | if (!is_import_rt_configured(vpn)) { |
4042 | if (is_vni_live(vpn)) | |
4043 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4044 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4045 | list_delete_all_node(vpn->import_rtl); |
4046 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4047 | if (is_vni_live(vpn)) | |
4048 | bgp_evpn_install_routes(bgp, vpn); | |
4049 | } | |
4050 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4051 | list_delete_all_node(vpn->export_rtl); |
4052 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4053 | if (is_vni_live(vpn)) | |
4054 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4055 | } | |
4056 | } | |
4057 | ||
128ea8ab | 4058 | /* |
4059 | * Public functions. | |
4060 | */ | |
4061 | ||
5424b7ba | 4062 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4063 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4064 | afi_t afi, safi_t safi) |
4065 | { | |
4066 | int ret = 0; | |
4067 | struct prefix_evpn evp; | |
4068 | char buf[PREFIX_STRLEN]; | |
4069 | ||
31310b25 | 4070 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4071 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4072 | if (ret) { | |
af4c2728 | 4073 | flog_err( |
e50f7cfd | 4074 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4075 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4076 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4077 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4078 | } |
4079 | } | |
4080 | ||
342dd0c6 | 4081 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4082 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4083 | { |
4084 | struct bgp_table *table = NULL; | |
4085 | struct bgp_node *rn = NULL; | |
4b7e6066 | 4086 | struct bgp_path_info *ri; |
342dd0c6 | 4087 | |
053905d2 | 4088 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4089 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4090 | /* Only care about "selected" routes - non-imported. */ | |
4091 | /* TODO: Support for AddPath for EVPN. */ | |
4092 | for (ri = rn->info; ri; ri = ri->next) { | |
1defdda8 | 4093 | if (CHECK_FLAG(ri->flags, BGP_PATH_SELECTED) |
996c9314 | 4094 | && (!ri->extra || !ri->extra->parent)) { |
25f2ca53 | 4095 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4096 | afi, safi); | |
4097 | break; | |
4098 | } | |
4099 | } | |
4100 | } | |
5424b7ba | 4101 | } |
342dd0c6 | 4102 | |
2f69f6d3 | 4103 | /* |
4104 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4105 | * to this function correspond to those of the source IP prefix (best | |
4106 | * path in the case of the attr. In the case of a local prefix (when we | |
4107 | * are advertising local subnets), the src_attr will be NULL. | |
4108 | */ | |
31310b25 | 4109 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4110 | struct attr *src_attr, afi_t afi, |
4111 | safi_t safi) | |
5424b7ba MK |
4112 | { |
4113 | int ret = 0; | |
4114 | struct prefix_evpn evp; | |
4115 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4116 | |
31310b25 | 4117 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4118 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4119 | if (ret) | |
e50f7cfd | 4120 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4121 | "%u: Failed to create type-5 route for prefix %s", |
4122 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4123 | } |
4124 | ||
2f69f6d3 | 4125 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4126 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4127 | * advertisement is enabled. | |
4128 | */ | |
996c9314 LB |
4129 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4130 | safi_t safi) | |
342dd0c6 | 4131 | { |
4132 | struct bgp_table *table = NULL; | |
4133 | struct bgp_node *rn = NULL; | |
4b7e6066 | 4134 | struct bgp_path_info *ri; |
342dd0c6 | 4135 | |
053905d2 | 4136 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4137 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4138 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4139 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4140 | * TODO: Support for AddPath for EVPN. |
4141 | */ | |
4142 | for (ri = rn->info; ri; ri = ri->next) { | |
1defdda8 | 4143 | if (CHECK_FLAG(ri->flags, BGP_PATH_SELECTED) |
996c9314 | 4144 | && (!ri->extra || !ri->extra->parent)) { |
53c84f78 MK |
4145 | |
4146 | /* apply the route-map */ | |
4147 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4148 | int ret = 0; | |
4149 | ||
996c9314 LB |
4150 | ret = route_map_apply( |
4151 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4152 | .map, | |
4153 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
4154 | if (ret == RMAP_DENYMATCH) |
4155 | continue; | |
4156 | } | |
996c9314 LB |
4157 | bgp_evpn_advertise_type5_route( |
4158 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 4159 | break; |
4160 | } | |
4161 | } | |
31310b25 | 4162 | } |
342dd0c6 | 4163 | } |
4164 | ||
996c9314 | 4165 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4166 | { |
4167 | struct listnode *node, *nnode, *node_to_del; | |
4168 | struct ecommunity *ecom, *ecom_auto; | |
4169 | struct ecommunity_val eval; | |
4170 | ||
bf1061d8 VB |
4171 | if (bgp->advertise_autort_rfc8365) |
4172 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4173 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4174 | ||
4175 | ecom_auto = ecommunity_new(); | |
4176 | ecommunity_add_val(ecom_auto, &eval); | |
4177 | node_to_del = NULL; | |
4178 | ||
4179 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4180 | if (ecommunity_match(ecom, ecom_auto)) { | |
4181 | ecommunity_free(&ecom); | |
4182 | node_to_del = node; | |
4183 | } | |
4184 | } | |
4185 | ||
4186 | if (node_to_del) | |
4187 | list_delete_node(rtl, node_to_del); | |
4188 | ||
4189 | ecommunity_free(&ecom_auto); | |
4190 | } | |
4191 | ||
4192 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4193 | struct ecommunity *ecomadd) |
c581d8b0 | 4194 | { |
5ba238b7 MK |
4195 | /* uninstall routes from vrf */ |
4196 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4197 | |
4198 | /* Cleanup the RT to VRF mapping */ | |
4199 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4200 | ||
c581d8b0 MK |
4201 | /* Remove auto generated RT */ |
4202 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4203 | ||
4204 | /* Add the newly configured RT to RT list */ | |
4205 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4206 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4207 | ||
10ebe1ab MK |
4208 | /* map VRF to its RTs */ |
4209 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4210 | ||
5ba238b7 MK |
4211 | /* install routes matching the new VRF */ |
4212 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4213 | } |
4214 | ||
4215 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4216 | struct ecommunity *ecomdel) | |
4217 | { | |
4218 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4219 | struct ecommunity *ecom = NULL; | |
4220 | ||
5ba238b7 MK |
4221 | /* uninstall routes from vrf */ |
4222 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4223 | |
4224 | /* Cleanup the RT to VRF mapping */ | |
4225 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4226 | ||
c581d8b0 MK |
4227 | /* remove the RT from the RT list */ |
4228 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4229 | if (ecommunity_match(ecom, ecomdel)) { | |
4230 | ecommunity_free(&ecom); | |
4231 | node_to_del = node; | |
4232 | break; | |
4233 | } | |
4234 | } | |
4235 | ||
4236 | if (node_to_del) | |
4237 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4238 | ||
b3a4db3d | 4239 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4240 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4241 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4242 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4243 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4244 | } | |
4245 | ||
10ebe1ab MK |
4246 | /* map VRFs to its RTs */ |
4247 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4248 | ||
5ba238b7 MK |
4249 | /* install routes matching this new RT */ |
4250 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4251 | } |
4252 | ||
4253 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4254 | struct ecommunity *ecomadd) | |
4255 | { | |
4256 | /* remove auto-generated RT */ | |
4257 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4258 | ||
4259 | /* Add the new RT to the RT list */ | |
4260 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4261 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4262 | ||
f1f8b53c | 4263 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4264 | } |
4265 | ||
4266 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4267 | struct ecommunity *ecomdel) | |
4268 | { | |
4269 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4270 | struct ecommunity *ecom = NULL; | |
4271 | ||
4272 | /* Remove the RT from the RT list */ | |
4273 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4274 | if (ecommunity_match(ecom, ecomdel)) { | |
4275 | ecommunity_free(&ecom); | |
4276 | node_to_del = node; | |
4277 | break; | |
4278 | } | |
4279 | } | |
4280 | ||
4281 | if (node_to_del) | |
4282 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4283 | ||
1525e99f DS |
4284 | /* |
4285 | * Temporary assert to make SA happy. | |
4286 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4287 | * which means that SA is going to complain about | |
4288 | * the list_isempty call, which doesn't NULL check. | |
4289 | * So until we get this situation cleaned up, here | |
4290 | * we are. | |
4291 | */ | |
4292 | assert(bgp_vrf->vrf_export_rtl); | |
4293 | ||
c581d8b0 | 4294 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4295 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4296 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4297 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4298 | } | |
4299 | ||
f1f8b53c | 4300 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4301 | } |
4302 | ||
2d48ee25 | 4303 | /* |
4304 | * Handle change to BGP router id. This is invoked twice by the change | |
4305 | * handler, first before the router id has been changed and then after | |
4306 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4307 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4308 | * will result in the routes being re-advertised. |
4309 | */ | |
d62a17ae | 4310 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4311 | { |
676f83b9 | 4312 | if (withdraw) { |
4313 | ||
4314 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4315 | stored in the global table for this vrf |
4316 | */ | |
80b140af | 4317 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4318 | |
4319 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4320 | * L2-VNIs |
4321 | */ | |
d62a17ae | 4322 | hash_iterate(bgp->vnihash, |
4323 | (void (*)(struct hash_backet *, | |
4324 | void *))withdraw_router_id_vni, | |
4325 | bgp); | |
676f83b9 | 4326 | } else { |
4327 | ||
4328 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4329 | * RD |
4330 | */ | |
80b140af | 4331 | update_router_id_vrf(bgp); |
676f83b9 | 4332 | |
4333 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4334 | * new RD |
4335 | */ | |
d62a17ae | 4336 | hash_iterate(bgp->vnihash, |
4337 | (void (*)(struct hash_backet *, | |
4338 | void *))update_router_id_vni, | |
4339 | bgp); | |
676f83b9 | 4340 | } |
2d48ee25 | 4341 | } |
4342 | ||
bf1061d8 VB |
4343 | /* |
4344 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4345 | */ | |
4346 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4347 | { | |
4348 | hash_iterate(bgp->vnihash, | |
4349 | (void (*)(struct hash_backet *, | |
4350 | void*))update_autort_vni, | |
4351 | bgp); | |
4352 | } | |
4353 | ||
90e60aa7 | 4354 | /* |
4355 | * Handle change to export RT - update and advertise local routes. | |
4356 | */ | |
d62a17ae | 4357 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4358 | { |
d62a17ae | 4359 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4360 | } |
4361 | ||
996c9314 | 4362 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4363 | { |
4364 | if (withdraw) | |
4365 | delete_withdraw_vrf_routes(bgp_vrf); | |
4366 | else | |
4367 | update_advertise_vrf_routes(bgp_vrf); | |
4368 | } | |
4369 | ||
90e60aa7 | 4370 | /* |
4371 | * Handle change to RD. This is invoked twice by the change handler, | |
4372 | * first before the RD has been changed and then after the RD has | |
4373 | * been changed. The first invocation will result in local routes | |
4374 | * of this VNI being deleted and withdrawn and the next will result | |
4375 | * in the routes being re-advertised. | |
4376 | */ | |
d62a17ae | 4377 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4378 | int withdraw) | |
90e60aa7 | 4379 | { |
d62a17ae | 4380 | if (withdraw) |
4381 | delete_withdraw_vni_routes(bgp, vpn); | |
4382 | else | |
4383 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4384 | } |
4385 | ||
4386 | /* | |
4387 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4388 | */ | |
d62a17ae | 4389 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4390 | { |
d62a17ae | 4391 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4392 | } |
4393 | ||
4394 | /* | |
4395 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4396 | * to Import RT. | |
4397 | */ | |
d62a17ae | 4398 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4399 | { |
d62a17ae | 4400 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4401 | } |
4402 | ||
b16031a2 | 4403 | /* |
b57ba6d2 | 4404 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4405 | */ |
d7c0a89a | 4406 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4407 | int len) |
b16031a2 | 4408 | { |
b57ba6d2 | 4409 | vni_t vni1, vni2; |
b16031a2 | 4410 | |
b57ba6d2 MK |
4411 | vni1 = label2vni(label); |
4412 | if (num_labels == 2) { | |
996c9314 | 4413 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4414 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4415 | } else | |
4416 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4417 | return buf; |
b16031a2 | 4418 | } |
4419 | ||
9c92b5f7 MK |
4420 | /* |
4421 | * Function to convert evpn route to json format. | |
4422 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4423 | */ | |
57f7feb6 | 4424 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4425 | { |
b682f6de | 4426 | char buf1[ETHER_ADDR_STRLEN]; |
4427 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4428 | |
b682f6de | 4429 | if (!json) |
4430 | return; | |
9c92b5f7 | 4431 | |
dff8f48d | 4432 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4433 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4434 | json_object_int_add(json, "ethTag", |
4435 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4436 | json_object_int_add(json, "ipLen", |
3714a385 | 4437 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4438 | ? IPV4_MAX_BITLEN |
4439 | : IPV6_MAX_BITLEN); | |
b682f6de | 4440 | json_object_string_add(json, "ip", |
3714a385 | 4441 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4442 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4443 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4444 | json_object_int_add(json, "routeType", |
4445 | p->prefix.route_type); | |
3714a385 | 4446 | json_object_int_add(json, "ethTag", |
4447 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4448 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4449 | json_object_string_add(json, "mac", | |
3714a385 | 4450 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4451 | buf1, |
4452 | sizeof(buf1))); | |
dff8f48d | 4453 | } else { |
d7c0a89a | 4454 | uint8_t family; |
dff8f48d | 4455 | |
3714a385 | 4456 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4457 | : AF_INET6; |
dff8f48d | 4458 | |
b682f6de | 4459 | json_object_int_add(json, "routeType", |
57f7feb6 | 4460 | p->prefix.route_type); |
3714a385 | 4461 | json_object_int_add(json, "ethTag", |
4462 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4463 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4464 | json_object_string_add(json, "mac", |
3714a385 | 4465 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4466 | buf1, |
4467 | sizeof(buf1))); | |
b682f6de | 4468 | json_object_int_add(json, "ipLen", |
3714a385 | 4469 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4470 | ? IPV4_MAX_BITLEN |
4471 | : IPV6_MAX_BITLEN); | |
4472 | json_object_string_add( | |
4473 | json, "ip", | |
3714a385 | 4474 | inet_ntop(family, |
4475 | &p->prefix.macip_addr.ip.ip.addr, | |
4476 | buf2, | |
57f7feb6 | 4477 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4478 | } |
4479 | } else { | |
4480 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4481 | } | |
9c92b5f7 MK |
4482 | } |
4483 | ||
520d5d76 | 4484 | /* |
4485 | * Function to convert evpn route to string. | |
4486 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4487 | */ | |
d62a17ae | 4488 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4489 | { | |
4490 | char buf1[ETHER_ADDR_STRLEN]; | |
4491 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4492 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4493 | |
4494 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4495 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4496 | p->prefix.imet_addr.eth_tag, |
4497 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4498 | : IPV6_MAX_BITLEN, |
3714a385 | 4499 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4500 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4501 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4502 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4503 | p->prefix.route_type, | |
3714a385 | 4504 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4505 | 8 * ETH_ALEN, |
3714a385 | 4506 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4507 | sizeof(buf1))); |
4508 | else { | |
d7c0a89a | 4509 | uint8_t family; |
d62a17ae | 4510 | |
3714a385 | 4511 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4512 | : AF_INET6; |
554cd77a VB |
4513 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4514 | p->prefix.route_type, | |
3714a385 | 4515 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4516 | 8 * ETH_ALEN, |
3714a385 | 4517 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4518 | sizeof(buf1)), |
4519 | family == AF_INET ? IPV4_MAX_BITLEN | |
4520 | : IPV6_MAX_BITLEN, | |
3714a385 | 4521 | inet_ntop(family, |
4522 | &p->prefix.macip_addr.ip.ip.addr, | |
4523 | buf2, | |
d62a17ae | 4524 | PREFIX2STR_BUFFER)); |
4525 | } | |
342dd0c6 | 4526 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4527 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4528 | p->prefix.route_type, | |
3714a385 | 4529 | p->prefix.prefix_addr.eth_tag, |
4530 | p->prefix.prefix_addr.ip_prefix_length, | |
4531 | is_evpn_prefix_ipaddr_v4(p) | |
4532 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4533 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4534 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4535 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4536 | p->prefix.route_type, | |
4537 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4538 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4539 | : IPV6_MAX_BITLEN, | |
4540 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4541 | } else { |
b03b8898 | 4542 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4543 | snprintf(buf, len, "(unsupported route type %d)", |
4544 | p->prefix.route_type); | |
d62a17ae | 4545 | } |
4546 | ||
4547 | return (buf); | |
520d5d76 | 4548 | } |
4549 | ||
128ea8ab | 4550 | /* |
4551 | * Encode EVPN prefix in Update (MP_REACH) | |
4552 | */ | |
d62a17ae | 4553 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4554 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4555 | uint32_t num_labels, struct attr *attr, |
4556 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4557 | { |
4558 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4559 | int len, ipa_len = 0; |
d62a17ae | 4560 | |
4561 | if (addpath_encode) | |
4562 | stream_putl(s, addpath_tx_id); | |
4563 | ||
4564 | /* Route type */ | |
4565 | stream_putc(s, evp->prefix.route_type); | |
4566 | ||
4567 | switch (evp->prefix.route_type) { | |
4568 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4569 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4570 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4571 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4572 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4573 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4574 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4575 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4576 | len += 3; | |
4577 | stream_putc(s, len); | |
996c9314 | 4578 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4579 | if (attr) |
4580 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4581 | else | |
4582 | stream_put(s, 0, 10); | |
3714a385 | 4583 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4584 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4585 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4586 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4587 | if (ipa_len) /* IP */ | |
4588 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4589 | ipa_len); | |
b57ba6d2 MK |
4590 | /* 1st label is the L2 VNI */ |
4591 | stream_put(s, label, BGP_LABEL_BYTES); | |
4592 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4593 | if (ipa_len && num_labels > 1) | |
996c9314 | 4594 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4595 | break; |
4596 | ||
4597 | case BGP_EVPN_IMET_ROUTE: | |
4598 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4599 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4600 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4601 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4602 | /* Originating Router's IP Addr */ | |
3714a385 | 4603 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4604 | break; |
4605 | ||
50f74cf1 | 4606 | case BGP_EVPN_ES_ROUTE: |
4607 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4608 | stream_put(s, prd->val, 8); /* RD */ | |
4609 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4610 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4611 | /* VTEP IP */ |
4612 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4613 | break; |
4614 | ||
d62a17ae | 4615 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4616 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4617 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4618 | break; |
4619 | ||
4620 | default: | |
4621 | break; | |
4622 | } | |
4623 | } | |
4624 | ||
4625 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4626 | struct bgp_nlri *packet, int withdraw) | |
4627 | { | |
d7c0a89a QY |
4628 | uint8_t *pnt; |
4629 | uint8_t *lim; | |
d62a17ae | 4630 | afi_t afi; |
4631 | safi_t safi; | |
d7c0a89a | 4632 | uint32_t addpath_id; |
d62a17ae | 4633 | int addpath_encoded; |
4634 | int psize = 0; | |
d7c0a89a | 4635 | uint8_t rtype; |
d62a17ae | 4636 | struct prefix p; |
4637 | ||
d62a17ae | 4638 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4639 | pnt = packet->nlri; | |
4640 | lim = pnt + packet->length; | |
4641 | afi = packet->afi; | |
4642 | safi = packet->safi; | |
4643 | addpath_id = 0; | |
4644 | ||
4645 | addpath_encoded = | |
4646 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4647 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4648 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4649 | ||
4650 | for (; pnt < lim; pnt += psize) { | |
4651 | /* Clear prefix structure. */ | |
4652 | memset(&p, 0, sizeof(struct prefix)); | |
4653 | ||
4654 | /* Deal with path-id if AddPath is supported. */ | |
4655 | if (addpath_encoded) { | |
4656 | /* When packet overflow occurs return immediately. */ | |
4657 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4658 | return -1; | |
4659 | ||
4660 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4661 | pnt += BGP_ADDPATH_ID_LEN; | |
4662 | } | |
4663 | ||
4664 | /* All EVPN NLRI types start with type and length. */ | |
4665 | if (pnt + 2 > lim) | |
4666 | return -1; | |
4667 | ||
4668 | rtype = *pnt++; | |
3f54c705 | 4669 | psize = *pnt++; |
d62a17ae | 4670 | |
4671 | /* When packet overflow occur return immediately. */ | |
4672 | if (pnt + psize > lim) | |
4673 | return -1; | |
4674 | ||
4675 | switch (rtype) { | |
4676 | case BGP_EVPN_MAC_IP_ROUTE: | |
4677 | if (process_type2_route(peer, afi, safi, | |
4678 | withdraw ? NULL : attr, pnt, | |
4679 | psize, addpath_id)) { | |
af4c2728 | 4680 | flog_err( |
e50f7cfd | 4681 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4682 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4683 | peer->bgp->vrf_id, peer->host, psize); | |
4684 | return -1; | |
4685 | } | |
4686 | break; | |
4687 | ||
4688 | case BGP_EVPN_IMET_ROUTE: | |
4689 | if (process_type3_route(peer, afi, safi, | |
4690 | withdraw ? NULL : attr, pnt, | |
4691 | psize, addpath_id)) { | |
af4c2728 | 4692 | flog_err( |
e50f7cfd | 4693 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4694 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4695 | peer->bgp->vrf_id, peer->host, psize); | |
4696 | return -1; | |
4697 | } | |
4698 | break; | |
4699 | ||
50f74cf1 | 4700 | case BGP_EVPN_ES_ROUTE: |
4701 | if (process_type4_route(peer, afi, safi, | |
4702 | withdraw ? NULL : attr, pnt, | |
4703 | psize, addpath_id)) { | |
af4c2728 | 4704 | flog_err( |
e50f7cfd | 4705 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4706 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4707 | peer->bgp->vrf_id, peer->host, psize); | |
4708 | return -1; | |
4709 | } | |
4710 | break; | |
4711 | ||
d62a17ae | 4712 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4713 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4714 | psize, addpath_id, withdraw)) { | |
af4c2728 | 4715 | flog_err( |
e50f7cfd | 4716 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4717 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4718 | peer->bgp->vrf_id, peer->host, psize); | |
4719 | return -1; | |
4720 | } | |
4721 | break; | |
4722 | ||
4723 | default: | |
4724 | break; | |
4725 | } | |
4726 | } | |
4727 | ||
4728 | /* Packet length consistency check. */ | |
4729 | if (pnt != lim) | |
4730 | return -1; | |
4731 | ||
4732 | return 0; | |
128ea8ab | 4733 | } |
4734 | ||
10ebe1ab MK |
4735 | /* |
4736 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4737 | * The mapping will be used during route processing. | |
4738 | * bgp_def: default bgp instance | |
4739 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4740 | */ | |
4741 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4742 | { | |
4743 | int i = 0; | |
4744 | struct ecommunity_val *eval = NULL; | |
4745 | struct listnode *node = NULL, *nnode = NULL; | |
4746 | struct ecommunity *ecom = NULL; | |
4747 | ||
4748 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4749 | for (i = 0; i < ecom->size; i++) { | |
4750 | eval = (struct ecommunity_val *)(ecom->val | |
4751 | + (i | |
4752 | * ECOMMUNITY_SIZE)); | |
4753 | map_vrf_to_rt(bgp_vrf, eval); | |
4754 | } | |
4755 | } | |
4756 | } | |
4757 | ||
4758 | /* | |
4759 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4760 | */ | |
4761 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4762 | { | |
4763 | int i; | |
4764 | struct ecommunity_val *eval; | |
4765 | struct listnode *node, *nnode; | |
4766 | struct ecommunity *ecom; | |
4767 | ||
4768 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4769 | for (i = 0; i < ecom->size; i++) { | |
4770 | struct vrf_irt_node *irt; | |
4771 | struct ecommunity_val eval_tmp; | |
4772 | ||
4773 | eval = (struct ecommunity_val *)(ecom->val | |
4774 | + (i | |
4775 | * ECOMMUNITY_SIZE)); | |
4776 | /* If using "automatic" RT, we only care about the | |
4777 | * local-admin sub-field. | |
4778 | * This is to facilitate using VNI as the RT for EBGP | |
4779 | * peering too. | |
4780 | */ | |
4781 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4782 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4783 | BGP_VRF_IMPORT_RT_CFGD)) | |
4784 | mask_ecom_global_admin(&eval_tmp, eval); | |
4785 | ||
4786 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4787 | if (irt) | |
4788 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4789 | } | |
4790 | } | |
4791 | } | |
4792 | ||
4793 | ||
128ea8ab | 4794 | /* |
4795 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4796 | * The mapping will be used during route processing. | |
4797 | */ | |
d62a17ae | 4798 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4799 | { |
d62a17ae | 4800 | int i; |
4801 | struct ecommunity_val *eval; | |
4802 | struct listnode *node, *nnode; | |
4803 | struct ecommunity *ecom; | |
128ea8ab | 4804 | |
d62a17ae | 4805 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4806 | for (i = 0; i < ecom->size; i++) { | |
4807 | eval = (struct ecommunity_val *)(ecom->val | |
4808 | + (i | |
4809 | * ECOMMUNITY_SIZE)); | |
4810 | map_vni_to_rt(bgp, vpn, eval); | |
4811 | } | |
4812 | } | |
128ea8ab | 4813 | } |
4814 | ||
4815 | /* | |
4816 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4817 | */ | |
d62a17ae | 4818 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4819 | { |
d62a17ae | 4820 | int i; |
4821 | struct ecommunity_val *eval; | |
4822 | struct listnode *node, *nnode; | |
4823 | struct ecommunity *ecom; | |
128ea8ab | 4824 | |
d62a17ae | 4825 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4826 | for (i = 0; i < ecom->size; i++) { | |
4827 | struct irt_node *irt; | |
4828 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4829 | |
d62a17ae | 4830 | eval = (struct ecommunity_val *)(ecom->val |
4831 | + (i | |
4832 | * ECOMMUNITY_SIZE)); | |
4833 | /* If using "automatic" RT, we only care about the | |
4834 | * local-admin sub-field. | |
4835 | * This is to facilitate using VNI as the RT for EBGP | |
4836 | * peering too. | |
4837 | */ | |
4838 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4839 | if (!is_import_rt_configured(vpn)) | |
4840 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4841 | |
d62a17ae | 4842 | irt = lookup_import_rt(bgp, &eval_tmp); |
4843 | if (irt) | |
4844 | unmap_vni_from_rt(bgp, vpn, irt); | |
4845 | } | |
4846 | } | |
128ea8ab | 4847 | } |
4848 | ||
4849 | /* | |
4850 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4851 | * The mapping will be used during route processing. | |
4852 | */ | |
d62a17ae | 4853 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4854 | { |
c581d8b0 | 4855 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4856 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4857 | |
d62a17ae | 4858 | /* Map RT to VNI */ |
4859 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4860 | } |
4861 | ||
4862 | /* | |
4863 | * Derive Export RT automatically for VNI. | |
4864 | */ | |
d62a17ae | 4865 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4866 | { |
c581d8b0 | 4867 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4868 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4869 | } |
4870 | ||
676f83b9 | 4871 | /* |
4872 | * Derive RD automatically for VNI using passed information - it | |
4873 | * is of the form RouterId:unique-id-for-vni. | |
4874 | */ | |
4875 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4876 | { | |
92708db6 | 4877 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4878 | } |
4879 | ||
128ea8ab | 4880 | /* |
4881 | * Derive RD automatically for VNI using passed information - it | |
4882 | * is of the form RouterId:unique-id-for-vni. | |
4883 | */ | |
d62a17ae | 4884 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4885 | { |
d62a17ae | 4886 | char buf[100]; |
128ea8ab | 4887 | |
d62a17ae | 4888 | vpn->prd.family = AF_UNSPEC; |
4889 | vpn->prd.prefixlen = 64; | |
4890 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4891 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4892 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4893 | } |
4894 | ||
7df407ed CS |
4895 | /* |
4896 | * Lookup L3-VNI | |
4897 | */ | |
4898 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4899 | { | |
4900 | struct list *inst = bm->bgp; | |
4901 | struct listnode *node; | |
4902 | struct bgp *bgp_vrf; | |
4903 | ||
4904 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4905 | if (bgp_vrf->l3vni == vni) | |
4906 | return true; | |
4907 | } | |
4908 | ||
4909 | return false; | |
4910 | } | |
4911 | ||
128ea8ab | 4912 | /* |
4913 | * Lookup VNI. | |
4914 | */ | |
d62a17ae | 4915 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4916 | { |
d62a17ae | 4917 | struct bgpevpn *vpn; |
4918 | struct bgpevpn tmp; | |
128ea8ab | 4919 | |
d62a17ae | 4920 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4921 | tmp.vni = vni; | |
4922 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4923 | return vpn; | |
128ea8ab | 4924 | } |
4925 | ||
4926 | /* | |
4927 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4928 | */ | |
d62a17ae | 4929 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4930 | struct in_addr originator_ip, |
4931 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4932 | { |
d62a17ae | 4933 | struct bgpevpn *vpn; |
128ea8ab | 4934 | |
d62a17ae | 4935 | if (!bgp) |
4936 | return NULL; | |
128ea8ab | 4937 | |
d62a17ae | 4938 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4939 | if (!vpn) | |
4940 | return NULL; | |
128ea8ab | 4941 | |
d62a17ae | 4942 | /* Set values - RD and RT set to defaults. */ |
4943 | vpn->vni = vni; | |
4944 | vpn->originator_ip = originator_ip; | |
29c53922 | 4945 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4946 | |
d62a17ae | 4947 | /* Initialize route-target import and export lists */ |
4948 | vpn->import_rtl = list_new(); | |
4949 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4950 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4951 | vpn->export_rtl = list_new(); |
4952 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4953 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4954 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4955 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4956 | |
d62a17ae | 4957 | /* Initialize EVPN route table. */ |
960035b2 | 4958 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4959 | |
d62a17ae | 4960 | /* Add to hash */ |
4961 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4962 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4963 | return NULL; | |
4964 | } | |
6a8657d0 MK |
4965 | |
4966 | /* add to l2vni list on corresponding vrf */ | |
4967 | bgpevpn_link_to_l3vni(vpn); | |
4968 | ||
d62a17ae | 4969 | QOBJ_REG(vpn, bgpevpn); |
4970 | return vpn; | |
128ea8ab | 4971 | } |
4972 | ||
4973 | /* | |
4974 | * Free a given VPN - called in multiple scenarios such as zebra | |
4975 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4976 | * This just frees appropriate memory, caller should have taken other | |
4977 | * needed actions. | |
4978 | */ | |
d62a17ae | 4979 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4980 | { |
6a8657d0 | 4981 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4982 | bgp_table_unlock(vpn->route_table); |
4983 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
4984 | list_delete(&vpn->import_rtl); |
4985 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 4986 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4987 | hash_release(bgp->vnihash, vpn); |
4988 | QOBJ_UNREG(vpn); | |
4989 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4990 | } |
4991 | ||
4992 | /* | |
50f74cf1 | 4993 | * Lookup local ES. |
4994 | */ | |
4995 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
4996 | { | |
4997 | struct evpnes *es; | |
4998 | struct evpnes tmp; | |
4999 | ||
5000 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5001 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5002 | es = hash_lookup(bgp->esihash, &tmp); | |
5003 | return es; | |
5004 | } | |
5005 | ||
5006 | /* | |
5007 | * Create a new local es - invoked upon zebra notification. | |
5008 | */ | |
5009 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5010 | esi_t *esi, | |
5011 | struct ipaddr *originator_ip) | |
5012 | { | |
5013 | char buf[100]; | |
5014 | struct evpnes *es; | |
5015 | ||
5016 | if (!bgp) | |
5017 | return NULL; | |
5018 | ||
5019 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5020 | if (!es) | |
5021 | return NULL; | |
5022 | ||
5023 | /* set the ESI and originator_ip */ | |
5024 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5025 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5026 | ||
5027 | /* Initialise the VTEP list */ | |
5028 | es->vtep_list = list_new(); | |
5029 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5030 | ||
5031 | /* auto derive RD for this es */ | |
5032 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5033 | es->prd.family = AF_UNSPEC; | |
5034 | es->prd.prefixlen = 64; | |
5035 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5036 | (void)str2prefix_rd(buf, &es->prd); | |
5037 | ||
5038 | /* Initialize the ES route table */ | |
5039 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5040 | ||
5041 | /* Add to hash */ | |
5042 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5043 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5044 | return NULL; | |
5045 | } | |
5046 | ||
5047 | QOBJ_REG(es, evpnes); | |
5048 | return es; | |
5049 | } | |
5050 | ||
5051 | /* | |
5052 | * Free a given ES - | |
5053 | * This just frees appropriate memory, caller should have taken other | |
5054 | * needed actions. | |
5055 | */ | |
5056 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5057 | { | |
6a154c88 | 5058 | list_delete(&es->vtep_list); |
50f74cf1 | 5059 | bgp_table_unlock(es->route_table); |
5060 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5061 | hash_release(bgp->esihash, es); | |
5062 | QOBJ_UNREG(es); | |
5063 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5064 | } | |
5065 | ||
5066 | /* | |
5067 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5068 | */ |
d62a17ae | 5069 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 5070 | struct prefix *p, struct bgp_path_info *ri) |
128ea8ab | 5071 | { |
d62a17ae | 5072 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 5073 | } |
5074 | ||
5075 | /* | |
50f74cf1 | 5076 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5077 | */ |
d62a17ae | 5078 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 5079 | struct prefix *p, struct bgp_path_info *ri) |
128ea8ab | 5080 | { |
d62a17ae | 5081 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 5082 | } |
5083 | ||
db0e1937 MK |
5084 | /* filter routes which have martian next hops */ |
5085 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5086 | { | |
0291c246 MK |
5087 | afi_t afi; |
5088 | safi_t safi; | |
5089 | struct bgp_node *rd_rn, *rn; | |
5090 | struct bgp_table *table; | |
4b7e6066 | 5091 | struct bgp_path_info *ri; |
db0e1937 MK |
5092 | |
5093 | afi = AFI_L2VPN; | |
5094 | safi = SAFI_EVPN; | |
5095 | ||
5096 | /* Walk entire global routing table and evaluate routes which could be | |
5097 | * imported into this VPN. Note that we cannot just look at the routes | |
5098 | * for the VNI's RD - | |
5099 | * remote routes applicable for this VNI could have any RD. | |
5100 | */ | |
5101 | /* EVPN routes are a 2-level table. */ | |
5102 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5103 | rd_rn = bgp_route_next(rd_rn)) { | |
5104 | table = (struct bgp_table *)(rd_rn->info); | |
5105 | if (!table) | |
5106 | continue; | |
5107 | ||
5108 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5109 | ||
5110 | for (ri = rn->info; ri; ri = ri->next) { | |
5111 | ||
5112 | /* Consider "valid" remote routes applicable for | |
5113 | * this VNI. */ | |
5114 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
5115 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
5116 | continue; | |
5117 | ||
60466a63 | 5118 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
5119 | |
5120 | char attr_str[BUFSIZ]; | |
5121 | char pbuf[PREFIX_STRLEN]; | |
5122 | ||
5123 | bgp_dump_attr(ri->attr, attr_str, | |
5124 | BUFSIZ); | |
5125 | ||
5126 | if (bgp_debug_update(ri->peer, &rn->p, | |
5127 | NULL, 1)) | |
5128 | zlog_debug( | |
b682f6de | 5129 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5130 | bgp->vrf_id, |
5131 | prefix2str( | |
60466a63 | 5132 | &rn->p, pbuf, |
db0e1937 MK |
5133 | sizeof(pbuf)), |
5134 | attr_str); | |
5135 | ||
5136 | bgp_evpn_unimport_route(bgp, afi, safi, | |
5137 | &rn->p, ri); | |
5138 | ||
60466a63 QY |
5139 | bgp_rib_remove(rn, ri, ri->peer, afi, |
5140 | safi); | |
db0e1937 | 5141 | } |
db0e1937 MK |
5142 | } |
5143 | } | |
5144 | } | |
5145 | ||
5146 | return 0; | |
5147 | } | |
5148 | ||
128ea8ab | 5149 | /* |
5150 | * Handle del of a local MACIP. | |
5151 | */ | |
d62a17ae | 5152 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5153 | struct ipaddr *ip) | |
128ea8ab | 5154 | { |
d62a17ae | 5155 | struct bgpevpn *vpn; |
5156 | struct prefix_evpn p; | |
128ea8ab | 5157 | |
d62a17ae | 5158 | /* Lookup VNI hash - should exist. */ |
5159 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5160 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5161 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5162 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5163 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5164 | return -1; | |
5165 | } | |
128ea8ab | 5166 | |
d62a17ae | 5167 | /* Remove EVPN type-2 route and schedule for processing. */ |
5168 | build_evpn_type2_prefix(&p, mac, ip); | |
5169 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5170 | |
d62a17ae | 5171 | return 0; |
128ea8ab | 5172 | } |
5173 | ||
5174 | /* | |
5175 | * Handle add of a local MACIP. | |
5176 | */ | |
d62a17ae | 5177 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5178 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5179 | { |
d62a17ae | 5180 | struct bgpevpn *vpn; |
5181 | struct prefix_evpn p; | |
128ea8ab | 5182 | |
d62a17ae | 5183 | /* Lookup VNI hash - should exist. */ |
5184 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5185 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5186 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5187 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5188 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5189 | return -1; | |
5190 | } | |
128ea8ab | 5191 | |
d62a17ae | 5192 | /* Create EVPN type-2 route and schedule for processing. */ |
5193 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5194 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5195 | char buf[ETHER_ADDR_STRLEN]; |
5196 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5197 | |
af4c2728 | 5198 | flog_err( |
e50f7cfd | 5199 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5200 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5201 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5202 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5203 | ? "sticky gateway" | |
5204 | : "", | |
d62a17ae | 5205 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5206 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5207 | return -1; |
5208 | } | |
128ea8ab | 5209 | |
d62a17ae | 5210 | return 0; |
128ea8ab | 5211 | } |
5212 | ||
6a8657d0 MK |
5213 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5214 | struct bgp *bgp_vrf) | |
5215 | { | |
0a1a07cb | 5216 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
6a8657d0 MK |
5217 | struct bgp *bgp_def = NULL; |
5218 | ||
5219 | bgp_def = bgp_get_default(); | |
5220 | assert(bgp_def); | |
5221 | ||
6a8657d0 MK |
5222 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5223 | bgpevpn_link_to_l3vni(vpn); | |
5224 | } | |
5225 | ||
996c9314 LB |
5226 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5227 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5228 | { |
5229 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5230 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5231 | struct listnode *node = NULL; |
5232 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5233 | as_t as = 0; |
5234 | ||
d846168d | 5235 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5236 | * auto-creatio |
5237 | */ | |
fe1dc5a3 MK |
5238 | bgp_def = bgp_get_default(); |
5239 | if (!bgp_def) { | |
af4c2728 | 5240 | flog_err( |
e50f7cfd | 5241 | EC_BGP_NO_DFLT, |
996c9314 LB |
5242 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", |
5243 | l3vni); | |
fe1dc5a3 MK |
5244 | return -1; |
5245 | } | |
5246 | as = bgp_def->as; | |
5247 | ||
5248 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5249 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5250 | if (!bgp_vrf) { |
5251 | ||
5252 | int ret = 0; | |
5253 | ||
5254 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5255 | BGP_INSTANCE_TYPE_VRF); | |
5256 | switch (ret) { | |
5257 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5258 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5259 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5260 | return -1; |
5261 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5262 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5263 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5264 | return -1; |
5265 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5266 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5267 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5268 | return -1; |
5269 | } | |
5270 | ||
5271 | /* mark as auto created */ | |
5272 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5273 | } | |
5274 | ||
5275 | /* associate with l3vni */ | |
5276 | bgp_vrf->l3vni = l3vni; | |
5277 | ||
5278 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5279 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5280 | ||
b67a60d2 | 5281 | /* set the originator ip */ |
5282 | bgp_vrf->originator_ip = originator_ip; | |
5283 | ||
c48d9f5f MK |
5284 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5285 | if (filter) | |
5286 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5287 | ||
c581d8b0 MK |
5288 | /* auto derive RD/RT */ |
5289 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5290 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5291 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5292 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5293 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5294 | |
6a8657d0 MK |
5295 | /* link all corresponding l2vnis */ |
5296 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5297 | (void (*)(struct hash_backet *, |
5298 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5299 | bgp_vrf); |
5300 | ||
c48d9f5f MK |
5301 | /* Only update all corresponding type-2 routes if we are advertising two |
5302 | * labels along with type-2 routes | |
5303 | */ | |
5304 | if (!filter) | |
5305 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5306 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5307 | |
06d2e8f3 MK |
5308 | /* advertise type-5 routes if needed */ |
5309 | update_advertise_vrf_routes(bgp_vrf); | |
5310 | ||
5ba238b7 MK |
5311 | /* install all remote routes belonging to this l3vni into correspondng |
5312 | * vrf */ | |
5313 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5314 | |
5315 | return 0; | |
5316 | } | |
5317 | ||
996c9314 | 5318 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5319 | { |
5320 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5321 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5322 | struct listnode *node = NULL; | |
18abc1eb | 5323 | struct listnode *next = NULL; |
f1f8b53c | 5324 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5325 | |
5326 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5327 | if (!bgp_vrf) { | |
af4c2728 | 5328 | flog_err( |
e50f7cfd | 5329 | EC_BGP_NO_DFLT, |
996c9314 LB |
5330 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5331 | l3vni); | |
fe1dc5a3 MK |
5332 | return -1; |
5333 | } | |
5334 | ||
f1f8b53c MK |
5335 | bgp_def = bgp_get_default(); |
5336 | if (!bgp_def) { | |
af4c2728 | 5337 | flog_err( |
e50f7cfd | 5338 | EC_BGP_NO_DFLT, |
996c9314 LB |
5339 | "Cannot process L3VNI %u Del - Could not find default BGP instance", |
5340 | l3vni); | |
f1f8b53c MK |
5341 | return -1; |
5342 | } | |
5343 | ||
d846168d CS |
5344 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
5345 | * bgp_delete would not remove/decrement bgp_info of the ip_prefix | |
5346 | * routes. This will uninstalling the routes from zebra and decremnt the | |
5347 | * bgp info count. | |
523cafc4 | 5348 | */ |
d846168d | 5349 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5350 | |
06d2e8f3 MK |
5351 | /* delete/withdraw all type-5 routes */ |
5352 | delete_withdraw_vrf_routes(bgp_vrf); | |
5353 | ||
fe1dc5a3 MK |
5354 | /* remove the l3vni from vrf instance */ |
5355 | bgp_vrf->l3vni = 0; | |
5356 | ||
5357 | /* remove the Rmac from the BGP vrf */ | |
5358 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5359 | ||
c581d8b0 | 5360 | /* delete RD/RT */ |
1525e99f | 5361 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5362 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5363 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5364 | } |
1525e99f | 5365 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5366 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5367 | } |
fe1dc5a3 | 5368 | |
f1f8b53c | 5369 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5370 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5371 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5372 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5373 | update_routes_for_vni(bgp_def, vpn); | |
5374 | } | |
5375 | } | |
fe1dc5a3 | 5376 | |
18abc1eb | 5377 | /* If any L2VNIs point to this instance, unlink them. */ |
5378 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5379 | bgpevpn_unlink_from_l3vni(vpn); | |
5380 | ||
fe1dc5a3 MK |
5381 | /* Delete the instance if it was autocreated */ |
5382 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5383 | bgp_delete(bgp_vrf); | |
5384 | ||
5385 | return 0; | |
5386 | } | |
5387 | ||
128ea8ab | 5388 | /* |
5389 | * Handle del of a local VNI. | |
5390 | */ | |
d62a17ae | 5391 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5392 | { |
d62a17ae | 5393 | struct bgpevpn *vpn; |
128ea8ab | 5394 | |
d62a17ae | 5395 | /* Locate VNI hash */ |
5396 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5397 | if (!vpn) { | |
1e00627b | 5398 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5399 | flog_warn( |
e50f7cfd | 5400 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5401 | "%u: VNI hash entry for VNI %u not found at DEL", |
5402 | bgp->vrf_id, vni); | |
d62a17ae | 5403 | return 0; |
5404 | } | |
128ea8ab | 5405 | |
d62a17ae | 5406 | /* Remove all local EVPN routes and schedule for processing (to |
5407 | * withdraw from peers). | |
5408 | */ | |
5409 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5410 | |
db0e1937 MK |
5411 | /* |
5412 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5413 | */ | |
5414 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5415 | ||
d62a17ae | 5416 | /* Clear "live" flag and see if hash needs to be freed. */ |
5417 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5418 | if (!is_vni_configured(vpn)) | |
5419 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5420 | |
d62a17ae | 5421 | return 0; |
128ea8ab | 5422 | } |
5423 | ||
5424 | /* | |
d1911c26 | 5425 | * Handle add (or update) of a local VNI. The VNI changes we care |
5426 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5427 | */ |
d62a17ae | 5428 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5429 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5430 | { |
5431 | struct bgpevpn *vpn; | |
5432 | struct prefix_evpn p; | |
5433 | ||
d62a17ae | 5434 | /* Lookup VNI. If present and no change, exit. */ |
5435 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5436 | if (vpn) { |
29c53922 | 5437 | |
d1911c26 | 5438 | if (is_vni_live(vpn) |
5439 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5440 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5441 | /* Probably some other param has changed that we don't | |
5442 | * care about. */ | |
5443 | return 0; | |
5444 | ||
5445 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5446 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5447 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5448 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5449 | bgpevpn_link_to_l3vni(vpn); |
5450 | } | |
29c53922 | 5451 | |
d1911c26 | 5452 | /* If tunnel endpoint IP has changed, update (and delete prior |
5453 | * type-3 route, if needed.) | |
5454 | */ | |
5455 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5456 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5457 | |
d1911c26 | 5458 | /* Update all routes with new endpoint IP and/or export RT |
5459 | * for VRFs | |
5460 | */ | |
5461 | if (is_vni_live(vpn)) | |
5462 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5463 | } |
5464 | ||
5465 | /* Create or update as appropriate. */ | |
5466 | if (!vpn) { | |
29c53922 | 5467 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5468 | if (!vpn) { |
af4c2728 | 5469 | flog_err( |
e50f7cfd | 5470 | EC_BGP_VNI, |
d62a17ae | 5471 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5472 | bgp->vrf_id, vni); | |
5473 | return -1; | |
5474 | } | |
5475 | } | |
5476 | ||
db0e1937 | 5477 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5478 | if (is_vni_live(vpn)) |
5479 | return 0; | |
5480 | ||
d62a17ae | 5481 | /* Mark as "live" */ |
5482 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5483 | ||
db0e1937 MK |
5484 | /* tunnel is now active, add tunnel-ip to db */ |
5485 | bgp_tip_add(bgp, &originator_ip); | |
5486 | ||
5487 | /* filter routes as nexthop database has changed */ | |
5488 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5489 | ||
d62a17ae | 5490 | /* Create EVPN type-3 route and schedule for processing. */ |
5491 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 5492 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { |
e50f7cfd | 5493 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5494 | "%u: Type3 route creation failure for VNI %u", |
5495 | bgp->vrf_id, vni); | |
d62a17ae | 5496 | return -1; |
5497 | } | |
5498 | ||
5499 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5500 | * VNI, | |
5501 | * install them. | |
5502 | */ | |
5503 | install_routes_for_vni(bgp, vpn); | |
5504 | ||
d7d97010 MK |
5505 | /* If we are advertising gateway mac-ip |
5506 | It needs to be conveyed again to zebra */ | |
5507 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5508 | ||
d62a17ae | 5509 | return 0; |
b18825eb | 5510 | } |
14c1a7bf | 5511 | |
50f74cf1 | 5512 | /* |
5513 | * bgp_evpn_local_es_del | |
5514 | */ | |
5515 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5516 | esi_t *esi, | |
5517 | struct ipaddr *originator_ip) | |
5518 | { | |
5519 | char buf[ESI_STR_LEN]; | |
5520 | struct evpnes *es = NULL; | |
5521 | ||
5522 | if (!bgp->esihash) { | |
e50f7cfd | 5523 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5524 | bgp->vrf_id); |
50f74cf1 | 5525 | return -1; |
5526 | } | |
5527 | ||
5528 | /* Lookup ESI hash - should exist. */ | |
5529 | es = bgp_evpn_lookup_es(bgp, esi); | |
5530 | if (!es) { | |
e50f7cfd | 5531 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5532 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5533 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5534 | return -1; |
5535 | } | |
5536 | ||
5537 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5538 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5539 | */ |
5540 | delete_routes_for_es(bgp, es); | |
5541 | ||
5542 | /* free the hash entry */ | |
5543 | bgp_evpn_es_free(bgp, es); | |
5544 | ||
5545 | return 0; | |
5546 | } | |
5547 | ||
5548 | /* | |
5549 | * bgp_evpn_local_es_add | |
5550 | */ | |
5551 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5552 | esi_t *esi, | |
5553 | struct ipaddr *originator_ip) | |
5554 | { | |
5555 | char buf[ESI_STR_LEN]; | |
5556 | struct evpnes *es = NULL; | |
5557 | struct prefix_evpn p; | |
5558 | ||
5559 | if (!bgp->esihash) { | |
e50f7cfd | 5560 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5561 | bgp->vrf_id); |
50f74cf1 | 5562 | return -1; |
5563 | } | |
5564 | ||
5565 | /* create the new es */ | |
2bb9eff4 | 5566 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5567 | if (!es) { |
5568 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5569 | if (!es) { | |
af4c2728 | 5570 | flog_err( |
e50f7cfd | 5571 | EC_BGP_ES_CREATE, |
50f74cf1 | 5572 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5573 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5574 | return -1; | |
5575 | } | |
5576 | } | |
5577 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5578 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5579 | ||
5580 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5581 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5582 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5583 | "%u: Type4 route creation failure for ESI %s", |
5584 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5585 | return -1; |
5586 | } | |
5587 | ||
5588 | /* import all remote ES routes in th ES table */ | |
5589 | install_routes_for_es(bgp, es); | |
5590 | ||
5591 | return 0; | |
5592 | } | |
5593 | ||
7724c0a1 | 5594 | /* |
5595 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5596 | * EVPN routes from peers. | |
5597 | */ | |
d62a17ae | 5598 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5599 | { |
9d303b37 DL |
5600 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5601 | void *))cleanup_vni_on_disable, | |
5602 | bgp); | |
7724c0a1 | 5603 | } |
5604 | ||
14c1a7bf | 5605 | /* |
5606 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5607 | * BGP instance (default) is being freed. | |
5608 | */ | |
d62a17ae | 5609 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5610 | { |
1525e99f DS |
5611 | hash_iterate(bgp->vnihash, |
5612 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5613 | bgp); | |
5614 | ||
5615 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5616 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5617 | |
5618 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5619 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5620 | |
5621 | hash_free(bgp->vnihash); | |
d62a17ae | 5622 | bgp->vnihash = NULL; |
50f74cf1 | 5623 | if (bgp->esihash) |
5624 | hash_free(bgp->esihash); | |
5625 | bgp->esihash = NULL; | |
1525e99f | 5626 | |
6a154c88 DL |
5627 | list_delete(&bgp->vrf_import_rtl); |
5628 | list_delete(&bgp->vrf_export_rtl); | |
5629 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5630 | } |
5631 | ||
5632 | /* | |
5633 | * Initialization for EVPN | |
5634 | * Create | |
5635 | * VNI hash table | |
5636 | * hash for RT to VNI | |
14c1a7bf | 5637 | */ |
d62a17ae | 5638 | void bgp_evpn_init(struct bgp *bgp) |
5639 | { | |
5640 | bgp->vnihash = | |
5641 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5642 | bgp->esihash = |
5643 | hash_create(esi_hash_keymake, esi_cmp, | |
5644 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5645 | bgp->import_rt_hash = |
5646 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5647 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5648 | bgp->vrf_import_rt_hash = |
5649 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5650 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5651 | bgp->vrf_import_rtl = list_new(); |
5652 | bgp->vrf_import_rtl->cmp = | |
5653 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5654 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5655 | bgp->vrf_export_rtl = list_new(); |
5656 | bgp->vrf_export_rtl->cmp = | |
5657 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5658 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5659 | bgp->l2vnis = list_new(); |
996c9314 | 5660 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5661 | } |
10ebe1ab MK |
5662 | |
5663 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5664 | { | |
5665 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5666 | } |