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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, |
40381db7 | 65 | struct bgp_path_info **pi); |
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; |
40381db7 | 919 | struct bgp_path_info *pi; |
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. */ | |
40381db7 | 931 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 932 | |
d62a17ae | 933 | /* Schedule for processing - withdraws to peers happen from |
934 | * this table. | |
935 | */ | |
40381db7 | 936 | if (pi) |
d62a17ae | 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. */ |
18ee8310 | 942 | bgp_path_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) | |
18ee8310 | 1073 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1074 | if (new_select) { |
18ee8310 DS |
1075 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1076 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 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 | ||
18ee8310 | 1096 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1097 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1098 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 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) | |
18ee8310 | 1164 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1165 | if (new_select) { |
18ee8310 DS |
1166 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1167 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 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 | ||
18ee8310 | 1207 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1208 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1209 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 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 | { | |
40381db7 DS |
1219 | struct bgp_path_info *tmp_pi = NULL; |
1220 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1221 | |
40381db7 DS |
1222 | local_pi = NULL; |
1223 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1224 | if (tmp_pi->peer == bgp->peer_self | |
1225 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1226 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1227 | local_pi = tmp_pi; | |
ead40654 MK |
1228 | } |
1229 | ||
40381db7 | 1230 | if (!local_pi) |
ead40654 MK |
1231 | return 0; |
1232 | ||
40381db7 | 1233 | return local_pi->attr->default_gw; |
ead40654 MK |
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 | { |
40381db7 DS |
1242 | struct bgp_path_info *tmp_pi; |
1243 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1244 | |
40381db7 DS |
1245 | local_pi = NULL; |
1246 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1247 | if (tmp_pi->peer == bgp->peer_self | |
1248 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1249 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1250 | local_pi = tmp_pi; | |
d62a17ae | 1251 | } |
c85c03c7 | 1252 | |
40381db7 | 1253 | if (!local_pi) |
d62a17ae | 1254 | return 0; |
c85c03c7 | 1255 | |
40381db7 | 1256 | return local_pi->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]; | |
40381db7 DS |
1272 | struct bgp_path_info *tmp_pi = NULL; |
1273 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1274 | struct bgp_path_info *remote_pi = 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 */ | |
40381db7 DS |
1283 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1284 | if (tmp_pi->peer == bgp->peer_self | |
1285 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1286 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1287 | local_pi = tmp_pi; | |
1288 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1289 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1290 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1291 | remote_pi = tmp_pi; | |
50f74cf1 | 1292 | } |
1293 | ||
40381db7 | 1294 | /* we don't expect to see a remote_pi at this point. |
50f74cf1 | 1295 | * An ES route has esi + vtep_ip as the key, |
1296 | * We shouldn't see the same route from any other vtep. | |
1297 | */ | |
40381db7 | 1298 | if (remote_pi) { |
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 | ||
40381db7 | 1308 | if (!local_pi && !add) |
50f74cf1 | 1309 | return 0; |
1310 | ||
1311 | /* create or update the entry */ | |
40381db7 | 1312 | if (!local_pi) { |
50f74cf1 | 1313 | |
1314 | /* Add or update attribute to hash */ | |
1315 | attr_new = bgp_attr_intern(attr); | |
1316 | ||
1317 | /* Create new route with its attribute. */ | |
40381db7 DS |
1318 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1319 | bgp->peer_self, attr_new, rn); | |
1320 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1321 | |
1322 | /* add the newly created path to the route-node */ | |
40381db7 | 1323 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1324 | } else { |
40381db7 DS |
1325 | tmp_pi = local_pi; |
1326 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1327 | && !CHECK_FLAG(tmp_pi->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); | |
40381db7 | 1333 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1334 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1335 | |
1336 | /* Restore route, if needed. */ | |
40381db7 DS |
1337 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1338 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1339 | |
1340 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1341 | bgp_attr_unintern(&tmp_pi->attr); |
1342 | tmp_pi->attr = attr_new; | |
1343 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1344 | } |
1345 | } | |
1346 | ||
1347 | /* Return back the route entry. */ | |
40381db7 | 1348 | *ri = tmp_pi; |
50f74cf1 | 1349 | return 0; |
1350 | } | |
1351 | ||
1352 | /* update evpn es (type-4) route */ | |
1353 | static int update_evpn_type4_route(struct bgp *bgp, | |
1354 | struct evpnes *es, | |
1355 | struct prefix_evpn *p) | |
1356 | { | |
1357 | int ret = 0; | |
1358 | int route_changed = 0; | |
1359 | char buf[ESI_STR_LEN]; | |
1360 | char buf1[INET6_ADDRSTRLEN]; | |
1361 | afi_t afi = AFI_L2VPN; | |
1362 | safi_t safi = SAFI_EVPN; | |
1363 | struct attr attr; | |
1364 | struct attr *attr_new = NULL; | |
1365 | struct bgp_node *rn = NULL; | |
40381db7 | 1366 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1367 | |
1368 | memset(&attr, 0, sizeof(struct attr)); | |
1369 | ||
1370 | /* Build path-attribute for this route. */ | |
1371 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1372 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1373 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1374 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1375 | ||
1376 | /* Set up extended community. */ | |
1377 | build_evpn_type4_route_extcomm(es, &attr); | |
1378 | ||
1379 | /* First, create (or fetch) route node within the ESI. */ | |
1380 | /* NOTE: There is no RD here. */ | |
1381 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1382 | ||
1383 | /* Create or update route entry. */ | |
40381db7 DS |
1384 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1385 | &pi, &route_changed); | |
50f74cf1 | 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 | ||
40381db7 DS |
1394 | assert(pi); |
1395 | attr_new = pi->attr; | |
50f74cf1 | 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) { | |
40381db7 | 1410 | struct bgp_path_info *global_pi; |
50f74cf1 | 1411 | |
1412 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1413 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1414 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1415 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1416 | |
1417 | /* Schedule for processing and unlock node. */ | |
1418 | bgp_process(bgp, rn, afi, safi); | |
1419 | bgp_unlock_node(rn); | |
1420 | } | |
1421 | ||
1422 | /* Unintern temporary. */ | |
1423 | aspath_unintern(&attr.aspath); | |
1424 | return 0; | |
1425 | } | |
1426 | ||
342dd0c6 | 1427 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1428 | struct bgp *bgp_vrf, afi_t afi, | |
1429 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1430 | struct attr *attr, int *route_changed) |
342dd0c6 | 1431 | { |
1432 | struct attr *attr_new = NULL; | |
40381db7 | 1433 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1434 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1435 | struct bgp_path_info *local_pi = NULL; |
1436 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1437 | |
5424b7ba | 1438 | *route_changed = 0; |
342dd0c6 | 1439 | /* locate the local route entry if any */ |
40381db7 DS |
1440 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1441 | if (tmp_pi->peer == bgp_def->peer_self | |
1442 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1443 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1444 | local_pi = tmp_pi; | |
342dd0c6 | 1445 | } |
1446 | ||
2bb9eff4 DS |
1447 | /* |
1448 | * create a new route entry if one doesnt exist. | |
1449 | * Otherwise see if route attr has changed | |
523cafc4 | 1450 | */ |
40381db7 | 1451 | if (!local_pi) { |
342dd0c6 | 1452 | |
5424b7ba MK |
1453 | /* route has changed as this is the first entry */ |
1454 | *route_changed = 1; | |
1455 | ||
342dd0c6 | 1456 | /* Add (or update) attribute to hash. */ |
1457 | attr_new = bgp_attr_intern(attr); | |
1458 | ||
1459 | /* create the route info from attribute */ | |
40381db7 | 1460 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
342dd0c6 | 1461 | bgp_def->peer_self, attr_new, rn); |
40381db7 | 1462 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1463 | |
b57ba6d2 | 1464 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1465 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1466 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1467 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1468 | pi->extra->num_labels = 1; | |
342dd0c6 | 1469 | |
1470 | /* add the route entry to route node*/ | |
40381db7 | 1471 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1472 | } else { |
1473 | ||
40381db7 DS |
1474 | tmp_pi = local_pi; |
1475 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1476 | |
1477 | /* attribute changed */ | |
1478 | *route_changed = 1; | |
1479 | ||
342dd0c6 | 1480 | /* The attribute has changed. */ |
1481 | /* Add (or update) attribute to hash. */ | |
1482 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1483 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1484 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1485 | |
1486 | /* Restore route, if needed. */ | |
40381db7 DS |
1487 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1488 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1489 | |
1490 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1491 | bgp_attr_unintern(&tmp_pi->attr); |
1492 | tmp_pi->attr = attr_new; | |
1493 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1494 | } |
1495 | } | |
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1500 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1501 | struct attr *src_attr) | |
342dd0c6 | 1502 | { |
1503 | afi_t afi = AFI_L2VPN; | |
1504 | safi_t safi = SAFI_EVPN; | |
1505 | struct attr attr; | |
1506 | struct bgp_node *rn = NULL; | |
1507 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1508 | int route_changed = 0; |
342dd0c6 | 1509 | |
1510 | bgp_def = bgp_get_default(); | |
1511 | if (!bgp_def) | |
faafdfa8 | 1512 | return 0; |
342dd0c6 | 1513 | |
2f69f6d3 | 1514 | /* Build path attribute for this route - use the source attr, if |
1515 | * present, else treat as locally originated. | |
1516 | */ | |
1517 | if (src_attr) | |
1518 | bgp_attr_dup(&attr, src_attr); | |
1519 | else { | |
1520 | memset(&attr, 0, sizeof(struct attr)); | |
1521 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1522 | } | |
1523 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1524 | attr.nexthop = bgp_vrf->originator_ip; |
1525 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1526 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1527 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1528 | ||
1529 | /* Setup RT and encap extended community */ | |
1530 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1531 | ||
1532 | /* get the route node in global table */ | |
1533 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1534 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1535 | assert(rn); |
1536 | ||
1537 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1538 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1539 | &route_changed); | |
342dd0c6 | 1540 | |
1541 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1542 | if (route_changed) { |
1543 | bgp_process(bgp_def, rn, afi, safi); | |
1544 | bgp_unlock_node(rn); | |
1545 | } | |
342dd0c6 | 1546 | |
1547 | /* uninten temporary */ | |
5ee65f6f | 1548 | if (!src_attr) |
1549 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1550 | return 0; |
1551 | } | |
1552 | ||
128ea8ab | 1553 | /* |
1554 | * Create or update EVPN route entry. This could be in the VNI route table | |
1555 | * or the global route table. | |
1556 | */ | |
d62a17ae | 1557 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1558 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1559 | struct attr *attr, int add, |
40381db7 | 1560 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1561 | uint32_t seq) |
d62a17ae | 1562 | { |
40381db7 DS |
1563 | struct bgp_path_info *tmp_pi; |
1564 | struct bgp_path_info *local_pi; | |
d62a17ae | 1565 | struct attr *attr_new; |
b57ba6d2 | 1566 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1567 | uint32_t num_labels = 1; |
d62a17ae | 1568 | int route_change = 1; |
d7c0a89a | 1569 | uint8_t sticky = 0; |
b57ba6d2 | 1570 | struct prefix_evpn *evp; |
d62a17ae | 1571 | |
40381db7 | 1572 | *pi = NULL; |
b57ba6d2 MK |
1573 | evp = (struct prefix_evpn *)&rn->p; |
1574 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1575 | |
f07e1c99 | 1576 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 DS |
1577 | local_pi = NULL; |
1578 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1579 | if (tmp_pi->peer == bgp->peer_self | |
1580 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1581 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1582 | local_pi = tmp_pi; | |
d62a17ae | 1583 | } |
1584 | ||
1585 | /* If route doesn't exist already, create a new one, if told to. | |
1586 | * Otherwise act based on whether the attributes of the route have | |
1587 | * changed or not. | |
1588 | */ | |
40381db7 | 1589 | if (!local_pi && !add) |
d62a17ae | 1590 | return 0; |
1591 | ||
f07e1c99 | 1592 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1593 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1594 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1595 | |
40381db7 | 1596 | if (!local_pi) { |
d62a17ae | 1597 | /* Add (or update) attribute to hash. */ |
1598 | attr_new = bgp_attr_intern(attr); | |
1599 | ||
1600 | /* Extract MAC mobility sequence number, if any. */ | |
1601 | attr_new->mm_seqnum = | |
1602 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1603 | attr_new->sticky = sticky; | |
1604 | ||
1605 | /* Create new route with its attribute. */ | |
40381db7 | 1606 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1607 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1608 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1609 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1610 | |
1611 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1612 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1613 | |
1614 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1615 | * Only attach second label if we are advertising two labels for | |
1616 | * type-2 routes. | |
1617 | */ | |
996c9314 LB |
1618 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1619 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1620 | vni_t l3vni; |
1621 | ||
1622 | l3vni = bgpevpn_get_l3vni(vpn); | |
1623 | if (l3vni) { | |
1624 | vni2label(l3vni, &label[1]); | |
1625 | num_labels++; | |
1626 | } | |
1627 | } | |
d62a17ae | 1628 | |
40381db7 DS |
1629 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1630 | tmp_pi->extra->num_labels = num_labels; | |
1631 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1632 | } else { |
40381db7 DS |
1633 | tmp_pi = local_pi; |
1634 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1635 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1636 | route_change = 0; |
1637 | else { | |
c48d9f5f MK |
1638 | /* |
1639 | * The attributes have changed, type-2 routes needs to | |
1640 | * be advertised with right labels. | |
1641 | */ | |
1642 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1643 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1644 | && CHECK_FLAG(vpn->flags, | |
1645 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1646 | vni_t l3vni; |
1647 | ||
1648 | l3vni = bgpevpn_get_l3vni(vpn); | |
1649 | if (l3vni) { | |
1650 | vni2label(l3vni, &label[1]); | |
1651 | num_labels++; | |
1652 | } | |
1653 | } | |
40381db7 DS |
1654 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1655 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1656 | |
d62a17ae | 1657 | /* The attribute has changed. */ |
1658 | /* Add (or update) attribute to hash. */ | |
1659 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1660 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1661 | 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. */ |
40381db7 DS |
1669 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1670 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1671 | |
1672 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1673 | bgp_attr_unintern(&tmp_pi->attr); |
1674 | tmp_pi->attr = attr_new; | |
1675 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1676 | } |
1677 | } | |
1678 | ||
1679 | /* Return back the route entry. */ | |
40381db7 | 1680 | *pi = tmp_pi; |
d62a17ae | 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; |
40381db7 | 1696 | struct bgp_path_info *pi; |
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, | |
40381db7 DS |
1742 | 1, &pi, flags, seq); |
1743 | assert(pi); | |
1744 | attr_new = pi->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) { | |
40381db7 | 1758 | struct bgp_path_info *global_pi; |
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, |
40381db7 | 1763 | &global_pi, 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, |
40381db7 | 1782 | struct bgp_path_info **pi) |
342dd0c6 | 1783 | { |
40381db7 | 1784 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1785 | |
40381db7 | 1786 | *pi = NULL; |
342dd0c6 | 1787 | |
50f74cf1 | 1788 | /* Now, find matching route. */ |
40381db7 DS |
1789 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) |
1790 | if (tmp_pi->peer == bgp->peer_self | |
1791 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1792 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1793 | break; |
1794 | ||
40381db7 | 1795 | *pi = tmp_pi; |
342dd0c6 | 1796 | |
1797 | /* Mark route for delete. */ | |
40381db7 DS |
1798 | if (tmp_pi) |
1799 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 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; | |
40381db7 | 1811 | struct bgp_path_info *pi; |
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. */ | |
40381db7 | 1831 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1832 | |
1833 | /* Schedule for processing - withdraws to peers happen from | |
1834 | * this table. | |
1835 | */ | |
40381db7 | 1836 | if (pi) |
50f74cf1 | 1837 | bgp_process(bgp, global_rn, afi, safi); |
1838 | bgp_unlock_node(global_rn); | |
1839 | } | |
1840 | ||
1841 | /* | |
1842 | * Delete route entry in the ESI route table. | |
1843 | * This can just be removed. | |
1844 | */ | |
40381db7 DS |
1845 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1846 | if (pi) | |
1847 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1848 | bgp_unlock_node(rn); |
1849 | return 0; | |
1850 | } | |
1851 | ||
342dd0c6 | 1852 | /* Delete EVPN type5 route */ |
996c9314 | 1853 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1854 | { |
1855 | afi_t afi = AFI_L2VPN; | |
1856 | safi_t safi = SAFI_EVPN; | |
1857 | struct bgp_node *rn = NULL; | |
40381db7 | 1858 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1859 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
1860 | ||
1861 | bgp_def = bgp_get_default(); | |
1862 | if (!bgp_def) | |
faafdfa8 | 1863 | return 0; |
342dd0c6 | 1864 | |
1865 | /* locate the global route entry for this type-5 prefix */ | |
1866 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1867 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1868 | if (!rn) | |
1869 | return 0; | |
1870 | ||
40381db7 DS |
1871 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &pi); |
1872 | if (pi) | |
342dd0c6 | 1873 | bgp_process(bgp_def, rn, afi, safi); |
1874 | bgp_unlock_node(rn); | |
1875 | return 0; | |
1876 | } | |
1877 | ||
128ea8ab | 1878 | /* |
1879 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1880 | * schedule for processing. | |
1881 | */ | |
d62a17ae | 1882 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1883 | struct prefix_evpn *p) | |
1884 | { | |
1885 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1886 | struct bgp_path_info *pi; |
d62a17ae | 1887 | afi_t afi = AFI_L2VPN; |
1888 | safi_t safi = SAFI_EVPN; | |
1889 | ||
1890 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1891 | * there | |
1892 | * is nothing further to do. | |
1893 | */ | |
1894 | /* NOTE: There is no RD here. */ | |
1895 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1896 | if (!rn) | |
1897 | return 0; | |
1898 | ||
1899 | /* Next, locate route node in the global EVPN routing table. Note that | |
1900 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1901 | * L3VPN routes. | |
1902 | */ | |
1903 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1904 | (struct prefix *)p, &vpn->prd); | |
1905 | if (global_rn) { | |
1906 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1907 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 1908 | |
1909 | /* Schedule for processing - withdraws to peers happen from | |
1910 | * this table. | |
1911 | */ | |
40381db7 | 1912 | if (pi) |
d62a17ae | 1913 | bgp_process(bgp, global_rn, afi, safi); |
1914 | bgp_unlock_node(global_rn); | |
1915 | } | |
1916 | ||
1917 | /* Delete route entry in the VNI route table. This can just be removed. | |
1918 | */ | |
40381db7 DS |
1919 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1920 | if (pi) | |
1921 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 1922 | bgp_unlock_node(rn); |
1923 | ||
1924 | return 0; | |
128ea8ab | 1925 | } |
1926 | ||
1927 | /* | |
1928 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1929 | * be scheduled for advertise to peers. | |
1930 | */ | |
d62a17ae | 1931 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1932 | { | |
1933 | afi_t afi; | |
1934 | safi_t safi; | |
1935 | struct bgp_node *rn; | |
40381db7 | 1936 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 1937 | struct attr attr; |
d62a17ae | 1938 | struct attr *attr_new; |
f07e1c99 | 1939 | uint32_t seq; |
1ec31309 | 1940 | int add_l3_ecomm = 0; |
d62a17ae | 1941 | |
1942 | afi = AFI_L2VPN; | |
1943 | safi = SAFI_EVPN; | |
d62a17ae | 1944 | |
1945 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1946 | * routes updated, update corresponding entry in the global table too. | |
1947 | */ | |
1948 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1949 | rn = bgp_route_next(rn)) { | |
1950 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1951 | struct bgp_node *rd_rn; | |
40381db7 | 1952 | struct bgp_path_info *global_pi; |
d62a17ae | 1953 | |
1954 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1955 | continue; | |
1956 | ||
f07e1c99 | 1957 | /* Identify local route. */ |
40381db7 DS |
1958 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1959 | if (tmp_pi->peer == bgp->peer_self | |
1960 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1961 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 1962 | break; |
7ec156a9 | 1963 | } |
d62a17ae | 1964 | |
40381db7 | 1965 | if (!tmp_pi) |
d62a17ae | 1966 | continue; |
1967 | ||
f07e1c99 | 1968 | /* |
1969 | * Build attribute per local route as the MAC mobility and | |
1970 | * some other values could differ for different routes. The | |
1971 | * attributes will be shared in the hash table. | |
1972 | */ | |
1973 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1974 | attr.nexthop = vpn->originator_ip; | |
1975 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1976 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1977 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
1978 | ||
1979 | if (evpn_route_is_sticky(bgp, rn)) | |
1980 | attr.sticky = 1; | |
1981 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
1982 | attr.default_gw = 1; | |
1983 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1984 | attr.router_flag = 1; | |
1985 | } | |
1986 | ||
1987 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1988 | * using L3 VNI for type-2 routes also. | |
1989 | */ | |
1990 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 1991 | !IN6_IS_ADDR_LINKLOCAL( |
1992 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 1993 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1994 | bgpevpn_get_l3vni(vpn)) | |
1995 | add_l3_ecomm = 1; | |
1996 | ||
1997 | /* Set up extended community. */ | |
1998 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1999 | ||
40381db7 | 2000 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2001 | |
2002 | /* Update the route entry. */ | |
40381db7 DS |
2003 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2004 | 0, seq); | |
f07e1c99 | 2005 | |
d62a17ae | 2006 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2007 | * correctly as local route in the VNI always wins. |
d62a17ae | 2008 | */ |
2009 | evpn_route_select_install(bgp, vpn, rn); | |
2010 | ||
40381db7 | 2011 | attr_new = pi->attr; |
d62a17ae | 2012 | |
2013 | /* Update route in global routing table. */ | |
2014 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2015 | (struct prefix *)evp, &vpn->prd); | |
2016 | assert(rd_rn); | |
2017 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2018 | &global_pi, 0, |
f07e1c99 | 2019 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2020 | |
2021 | /* Schedule for processing and unlock node. */ | |
2022 | bgp_process(bgp, rd_rn, afi, safi); | |
2023 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2024 | |
f07e1c99 | 2025 | /* Unintern temporary. */ |
2026 | aspath_unintern(&attr.aspath); | |
2027 | ||
2028 | } | |
d62a17ae | 2029 | |
2030 | return 0; | |
128ea8ab | 2031 | } |
2032 | ||
2033 | /* | |
2034 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2035 | * global routing table. These are also scheduled for withdraw from peers. | |
2036 | */ | |
d62a17ae | 2037 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2038 | { |
d62a17ae | 2039 | afi_t afi; |
2040 | safi_t safi; | |
2041 | struct bgp_node *rdrn, *rn; | |
2042 | struct bgp_table *table; | |
40381db7 | 2043 | struct bgp_path_info *pi; |
128ea8ab | 2044 | |
d62a17ae | 2045 | afi = AFI_L2VPN; |
2046 | safi = SAFI_EVPN; | |
128ea8ab | 2047 | |
d62a17ae | 2048 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2049 | if (rdrn && rdrn->info) { | |
2050 | table = (struct bgp_table *)rdrn->info; | |
2051 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2052 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2053 | |
d62a17ae | 2054 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2055 | continue; | |
128ea8ab | 2056 | |
40381db7 DS |
2057 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2058 | if (pi) | |
d62a17ae | 2059 | bgp_process(bgp, rn, afi, safi); |
2060 | } | |
2061 | } | |
128ea8ab | 2062 | |
d62a17ae | 2063 | /* Unlock RD node. */ |
2064 | if (rdrn) | |
2065 | bgp_unlock_node(rdrn); | |
128ea8ab | 2066 | |
d62a17ae | 2067 | return 0; |
128ea8ab | 2068 | } |
2069 | ||
2070 | /* | |
2071 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2072 | * table as well as the per-VNI route table. | |
2073 | */ | |
d62a17ae | 2074 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2075 | { |
d62a17ae | 2076 | afi_t afi; |
2077 | safi_t safi; | |
2078 | struct bgp_node *rn; | |
40381db7 | 2079 | struct bgp_path_info *pi; |
128ea8ab | 2080 | |
d62a17ae | 2081 | afi = AFI_L2VPN; |
2082 | safi = SAFI_EVPN; | |
128ea8ab | 2083 | |
d62a17ae | 2084 | /* First, walk the global route table for this VNI's type-2 local |
2085 | * routes. | |
2086 | * EVPN routes are a 2-level table, first get the RD table. | |
2087 | */ | |
2088 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2089 | |
d62a17ae | 2090 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2091 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2092 | rn = bgp_route_next(rn)) { | |
2093 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2094 | |
d62a17ae | 2095 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2096 | continue; | |
128ea8ab | 2097 | |
40381db7 | 2098 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2099 | |
d62a17ae | 2100 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2101 | if (pi) |
2102 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2103 | } |
128ea8ab | 2104 | |
d62a17ae | 2105 | return 0; |
128ea8ab | 2106 | } |
2107 | ||
50f74cf1 | 2108 | /* |
2109 | * Delete all routes in per ES route-table | |
2110 | */ | |
2111 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2112 | { | |
2113 | struct bgp_node *rn; | |
40381db7 | 2114 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2115 | |
2116 | /* Walk this ES's route table and delete all routes. */ | |
2117 | for (rn = bgp_table_top(es->route_table); rn; | |
2118 | rn = bgp_route_next(rn)) { | |
40381db7 DS |
2119 | for (pi = rn->info; (pi != NULL) && (nextpi = pi->next, 1); |
2120 | pi = nextpi) { | |
2121 | bgp_path_info_delete(rn, pi); | |
2122 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2123 | } |
2124 | } | |
2125 | ||
2126 | return 0; | |
2127 | } | |
2128 | ||
128ea8ab | 2129 | /* |
2130 | * Delete all routes in the per-VNI route table. | |
2131 | */ | |
d62a17ae | 2132 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2133 | { |
d62a17ae | 2134 | struct bgp_node *rn; |
40381db7 | 2135 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2136 | |
d62a17ae | 2137 | /* Walk this VNI's route table and delete all routes. */ |
2138 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2139 | rn = bgp_route_next(rn)) { | |
40381db7 DS |
2140 | for (pi = rn->info; (pi != NULL) && (nextpi = pi->next, 1); |
2141 | pi = nextpi) { | |
2142 | bgp_path_info_delete(rn, pi); | |
2143 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2144 | } |
2145 | } | |
128ea8ab | 2146 | |
d62a17ae | 2147 | return 0; |
128ea8ab | 2148 | } |
2149 | ||
2150 | /* | |
2151 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2152 | * export RT getting modified or change to tunnel IP. Note that these | |
2153 | * situations need the route in the per-VNI table as well as the global | |
2154 | * table to be updated (as attributes change). | |
2155 | */ | |
d62a17ae | 2156 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2157 | { |
d62a17ae | 2158 | int ret; |
2159 | struct prefix_evpn p; | |
128ea8ab | 2160 | |
d62a17ae | 2161 | /* Update and advertise the type-3 route (only one) followed by the |
2162 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2163 | */ | |
2164 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 2165 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); |
d62a17ae | 2166 | if (ret) |
2167 | return ret; | |
128ea8ab | 2168 | |
d62a17ae | 2169 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2170 | } |
2171 | ||
50f74cf1 | 2172 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2173 | * Also remove all other routes from the per ES table. | |
2174 | * Invoked when ES is deleted. | |
2175 | */ | |
2176 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2177 | { | |
2178 | int ret; | |
2179 | char buf[ESI_STR_LEN]; | |
2180 | struct prefix_evpn p; | |
2181 | ||
2182 | /* Delete and withdraw locally learnt ES route */ | |
2183 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2184 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2185 | if (ret) { | |
e50f7cfd | 2186 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2187 | "%u failed to delete type-4 route for ESI %s", |
2188 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2189 | } |
2190 | ||
2191 | /* Delete all routes from per ES table */ | |
2192 | return delete_all_es_routes(bgp, es); | |
2193 | } | |
2194 | ||
128ea8ab | 2195 | /* |
2196 | * Delete (and withdraw) local routes for specified VNI from the global | |
2197 | * table and per-VNI table. After this, remove all other routes from | |
2198 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2199 | * (advertise-all-vni) being disabled. | |
2200 | */ | |
d62a17ae | 2201 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2202 | { |
d62a17ae | 2203 | int ret; |
2204 | struct prefix_evpn p; | |
128ea8ab | 2205 | |
d62a17ae | 2206 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2207 | * followed by type-3 routes (only one) - for this VNI. | |
2208 | */ | |
2209 | ret = delete_all_type2_routes(bgp, vpn); | |
2210 | if (ret) | |
2211 | return ret; | |
128ea8ab | 2212 | |
d62a17ae | 2213 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2214 | ret = delete_evpn_route(bgp, vpn, &p); | |
2215 | if (ret) | |
2216 | return ret; | |
128ea8ab | 2217 | |
d62a17ae | 2218 | /* Delete all routes from the per-VNI table. */ |
2219 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2220 | } |
2221 | ||
2222 | /* | |
d1911c26 | 2223 | * There is a tunnel endpoint IP address change for this VNI, delete |
2224 | * prior type-3 route (if needed) and update. | |
2225 | * Note: Route re-advertisement happens elsewhere after other processing | |
2226 | * other changes. | |
128ea8ab | 2227 | */ |
d62a17ae | 2228 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2229 | struct in_addr originator_ip) | |
128ea8ab | 2230 | { |
d62a17ae | 2231 | struct prefix_evpn p; |
128ea8ab | 2232 | |
ddd16ed5 MK |
2233 | /* If VNI is not live, we only need to update the originator ip */ |
2234 | if (!is_vni_live(vpn)) { | |
2235 | vpn->originator_ip = originator_ip; | |
2236 | return 0; | |
2237 | } | |
2238 | ||
db0e1937 MK |
2239 | /* Update the tunnel-ip hash */ |
2240 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2241 | bgp_tip_add(bgp, &originator_ip); | |
2242 | ||
2243 | /* filter routes as martian nexthop db has changed */ | |
2244 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2245 | ||
d62a17ae | 2246 | /* Need to withdraw type-3 route as the originator IP is part |
2247 | * of the key. | |
2248 | */ | |
2249 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2250 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2251 | |
d62a17ae | 2252 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2253 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2254 | return 0; |
128ea8ab | 2255 | } |
2256 | ||
50f74cf1 | 2257 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2258 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2259 | struct prefix_evpn *p, |
40381db7 | 2260 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2261 | { |
2262 | int ret = 0; | |
2263 | struct bgp_node *rn = NULL; | |
40381db7 | 2264 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2265 | struct attr *attr_new = NULL; |
2266 | ||
2267 | /* Create (or fetch) route within the VNI. | |
2268 | * NOTE: There is no RD here. | |
2269 | */ | |
2270 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2271 | ||
2272 | /* Check if route entry is already present. */ | |
40381db7 DS |
2273 | for (pi = rn->info; pi; pi = pi->next) |
2274 | if (pi->extra | |
2275 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2276 | break; |
2277 | ||
40381db7 | 2278 | if (!pi) { |
50f74cf1 | 2279 | /* Add (or update) attribute to hash. */ |
40381db7 | 2280 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2281 | |
2282 | /* Create new route with its attribute. */ | |
40381db7 DS |
2283 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2284 | parent_pi->peer, attr_new, rn); | |
2285 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2286 | bgp_path_info_extra_get(pi); | |
2287 | pi->extra->parent = parent_pi; | |
2288 | bgp_path_info_add(rn, pi); | |
50f74cf1 | 2289 | } else { |
40381db7 DS |
2290 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2291 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2292 | bgp_unlock_node(rn); |
2293 | return 0; | |
2294 | } | |
2295 | /* The attribute has changed. */ | |
2296 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2297 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2298 | |
2299 | /* Restore route, if needed. */ | |
40381db7 DS |
2300 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2301 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2302 | |
2303 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2304 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2305 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2306 | |
2307 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2308 | bgp_attr_unintern(&pi->attr); |
2309 | pi->attr = attr_new; | |
2310 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2311 | } |
2312 | ||
2313 | /* Perform route selection and update zebra, if required. */ | |
2314 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2315 | return ret; | |
2316 | } | |
2317 | ||
d3135ba3 | 2318 | /* |
2319 | * Install route entry into the VRF routing table and invoke route selection. | |
2320 | */ | |
2321 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2322 | struct prefix_evpn *evp, | |
40381db7 | 2323 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2324 | { |
2325 | struct bgp_node *rn; | |
40381db7 | 2326 | struct bgp_path_info *pi; |
1ec31309 | 2327 | struct attr attr; |
d3135ba3 | 2328 | struct attr *attr_new; |
c4edf708 | 2329 | int ret = 0; |
d3135ba3 | 2330 | struct prefix p; |
2331 | struct prefix *pp = &p; | |
2332 | afi_t afi = 0; | |
2333 | safi_t safi = 0; | |
1eb88002 MK |
2334 | char buf[PREFIX_STRLEN]; |
2335 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2336 | |
2337 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2338 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2339 | |
1eb88002 | 2340 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2341 | zlog_debug( |
2342 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2343 | prefix2str(evp, buf, sizeof(buf)), | |
2344 | prefix2str(pp, buf1, sizeof(buf)), | |
2345 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2346 | } |
2347 | ||
d3135ba3 | 2348 | /* Create (or fetch) route within the VRF. */ |
2349 | /* NOTE: There is no RD here. */ | |
3714a385 | 2350 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2351 | afi = AFI_IP; |
2352 | safi = SAFI_UNICAST; | |
2353 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2354 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2355 | afi = AFI_IP6; |
2356 | safi = SAFI_UNICAST; | |
2357 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2358 | } else | |
2359 | return 0; | |
2360 | ||
1ec31309 | 2361 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2362 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2363 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2364 | * address for the rest of the code to flow through. In the case of IPv4, | |
2365 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2366 | */ |
40381db7 | 2367 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2368 | if (afi == AFI_IP6) |
2369 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2370 | else |
2371 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2372 | |
d3135ba3 | 2373 | /* Check if route entry is already present. */ |
40381db7 DS |
2374 | for (pi = rn->info; pi; pi = pi->next) |
2375 | if (pi->extra | |
2376 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2377 | break; |
2378 | ||
40381db7 | 2379 | if (!pi) { |
d3135ba3 | 2380 | /* Add (or update) attribute to hash. */ |
1ec31309 | 2381 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2382 | |
2383 | /* Create new route with its attribute. */ | |
40381db7 DS |
2384 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2385 | parent_pi->peer, attr_new, rn); | |
2386 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2387 | bgp_path_info_extra_get(pi); | |
2388 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2389 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2390 | if (parent_pi->extra) { | |
2391 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2392 | sizeof(pi->extra->label)); | |
2393 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2394 | } |
40381db7 | 2395 | bgp_path_info_add(rn, pi); |
d3135ba3 | 2396 | } else { |
40381db7 DS |
2397 | if (attrhash_cmp(pi->attr, &attr) |
2398 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2399 | bgp_unlock_node(rn); |
2400 | return 0; | |
2401 | } | |
2402 | /* The attribute has changed. */ | |
2403 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2404 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2405 | |
2406 | /* Restore route, if needed. */ | |
40381db7 DS |
2407 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2408 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2409 | |
2410 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2411 | if ((afi == AFI_IP |
2412 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2413 | || (afi == AFI_IP6 | |
2414 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2415 | &attr_new->mp_nexthop_global))) | |
2416 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2417 | |
2418 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2419 | bgp_attr_unintern(&pi->attr); |
2420 | pi->attr = attr_new; | |
2421 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2422 | } |
2423 | ||
40381db7 | 2424 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2425 | |
d3135ba3 | 2426 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2427 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2428 | |
2429 | return ret; | |
2430 | } | |
2431 | ||
128ea8ab | 2432 | /* |
2433 | * Install route entry into the VNI routing table and invoke route selection. | |
2434 | */ | |
d62a17ae | 2435 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2436 | struct prefix_evpn *p, | |
40381db7 | 2437 | struct bgp_path_info *parent_pi) |
d62a17ae | 2438 | { |
2439 | struct bgp_node *rn; | |
40381db7 | 2440 | struct bgp_path_info *pi; |
d62a17ae | 2441 | struct attr *attr_new; |
2442 | int ret; | |
2443 | ||
2444 | /* Create (or fetch) route within the VNI. */ | |
2445 | /* NOTE: There is no RD here. */ | |
2446 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2447 | ||
2448 | /* Check if route entry is already present. */ | |
40381db7 DS |
2449 | for (pi = rn->info; pi; pi = pi->next) |
2450 | if (pi->extra | |
2451 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2452 | break; |
2453 | ||
40381db7 | 2454 | if (!pi) { |
d62a17ae | 2455 | /* Add (or update) attribute to hash. */ |
40381db7 | 2456 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2457 | |
2458 | /* Create new route with its attribute. */ | |
40381db7 DS |
2459 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2460 | parent_pi->peer, attr_new, rn); | |
2461 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2462 | bgp_path_info_extra_get(pi); | |
2463 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2464 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2465 | if (parent_pi->extra) { | |
2466 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2467 | sizeof(pi->extra->label)); | |
2468 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2469 | } |
40381db7 | 2470 | bgp_path_info_add(rn, pi); |
d62a17ae | 2471 | } else { |
40381db7 DS |
2472 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2473 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2474 | bgp_unlock_node(rn); |
2475 | return 0; | |
2476 | } | |
2477 | /* The attribute has changed. */ | |
2478 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2479 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2480 | |
50f74cf1 | 2481 | /* Restore route, if needed. */ |
40381db7 DS |
2482 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2483 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2484 | |
2485 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2486 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2487 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2488 | |
2489 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2490 | bgp_attr_unintern(&pi->attr); |
2491 | pi->attr = attr_new; | |
2492 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2493 | } |
2494 | ||
2495 | /* Perform route selection and update zebra, if required. */ | |
2496 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2497 | ||
2498 | return ret; | |
2499 | } | |
2500 | ||
2501 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2502 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2503 | struct prefix_evpn *p, |
40381db7 | 2504 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2505 | { |
2506 | int ret; | |
2507 | struct bgp_node *rn; | |
40381db7 | 2508 | struct bgp_path_info *pi; |
50f74cf1 | 2509 | |
2510 | if (!es->route_table) | |
2511 | return 0; | |
2512 | ||
2513 | /* Locate route within the ESI. | |
2514 | * NOTE: There is no RD here. | |
2515 | */ | |
2516 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2517 | if (!rn) | |
2518 | return 0; | |
2519 | ||
2520 | /* Find matching route entry. */ | |
40381db7 DS |
2521 | for (pi = rn->info; pi; pi = pi->next) |
2522 | if (pi->extra | |
2523 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2524 | break; |
d62a17ae | 2525 | |
40381db7 | 2526 | if (!pi) |
50f74cf1 | 2527 | return 0; |
d62a17ae | 2528 | |
50f74cf1 | 2529 | /* Mark entry for deletion */ |
40381db7 | 2530 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2531 | |
2532 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2533 | ret = evpn_es_route_select_install(bgp, es, rn); |
2534 | ||
2535 | /* Unlock route node. */ | |
2536 | bgp_unlock_node(rn); | |
d62a17ae | 2537 | |
2538 | return ret; | |
128ea8ab | 2539 | } |
2540 | ||
d3135ba3 | 2541 | /* |
2542 | * Uninstall route entry from the VRF routing table and send message | |
2543 | * to zebra, if appropriate. | |
2544 | */ | |
2545 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2546 | struct prefix_evpn *evp, | |
40381db7 | 2547 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2548 | { |
2549 | struct bgp_node *rn; | |
40381db7 | 2550 | struct bgp_path_info *pi; |
c4edf708 | 2551 | int ret = 0; |
d3135ba3 | 2552 | struct prefix p; |
2553 | struct prefix *pp = &p; | |
2554 | afi_t afi = 0; | |
2555 | safi_t safi = 0; | |
1eb88002 MK |
2556 | char buf[PREFIX_STRLEN]; |
2557 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2558 | |
2559 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2560 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2561 | |
1eb88002 | 2562 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2563 | zlog_debug( |
2564 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2565 | prefix2str(evp, buf, sizeof(buf)), | |
2566 | prefix2str(pp, buf1, sizeof(buf)), | |
2567 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2568 | } |
2569 | ||
d3135ba3 | 2570 | /* Locate route within the VRF. */ |
2571 | /* NOTE: There is no RD here. */ | |
3714a385 | 2572 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2573 | afi = AFI_IP; |
2574 | safi = SAFI_UNICAST; | |
2575 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2576 | } else { | |
2577 | afi = AFI_IP6; | |
2578 | safi = SAFI_UNICAST; | |
2579 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2580 | } | |
2581 | ||
2582 | if (!rn) | |
2583 | return 0; | |
2584 | ||
2585 | /* Find matching route entry. */ | |
40381db7 DS |
2586 | for (pi = rn->info; pi; pi = pi->next) |
2587 | if (pi->extra | |
2588 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2589 | break; |
2590 | ||
40381db7 | 2591 | if (!pi) |
d3135ba3 | 2592 | return 0; |
2593 | ||
40381db7 | 2594 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2595 | |
d3135ba3 | 2596 | /* Mark entry for deletion */ |
40381db7 | 2597 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2598 | |
2599 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2600 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2601 | |
2602 | /* Unlock route node. */ | |
2603 | bgp_unlock_node(rn); | |
2604 | ||
2605 | return ret; | |
2606 | } | |
2607 | ||
128ea8ab | 2608 | /* |
2609 | * Uninstall route entry from the VNI routing table and send message | |
2610 | * to zebra, if appropriate. | |
2611 | */ | |
d62a17ae | 2612 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2613 | struct prefix_evpn *p, | |
40381db7 | 2614 | struct bgp_path_info *parent_pi) |
128ea8ab | 2615 | { |
d62a17ae | 2616 | struct bgp_node *rn; |
40381db7 | 2617 | struct bgp_path_info *pi; |
d62a17ae | 2618 | int ret; |
128ea8ab | 2619 | |
d62a17ae | 2620 | /* Locate route within the VNI. */ |
2621 | /* NOTE: There is no RD here. */ | |
2622 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2623 | if (!rn) | |
2624 | return 0; | |
128ea8ab | 2625 | |
d62a17ae | 2626 | /* Find matching route entry. */ |
40381db7 DS |
2627 | for (pi = rn->info; pi; pi = pi->next) |
2628 | if (pi->extra | |
2629 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2630 | break; |
128ea8ab | 2631 | |
40381db7 | 2632 | if (!pi) |
d62a17ae | 2633 | return 0; |
128ea8ab | 2634 | |
d62a17ae | 2635 | /* Mark entry for deletion */ |
40381db7 | 2636 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2637 | |
d62a17ae | 2638 | /* Perform route selection and update zebra, if required. */ |
2639 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2640 | |
d62a17ae | 2641 | /* Unlock route node. */ |
2642 | bgp_unlock_node(rn); | |
128ea8ab | 2643 | |
d62a17ae | 2644 | return ret; |
128ea8ab | 2645 | } |
2646 | ||
50f74cf1 | 2647 | /* |
2648 | * Given a prefix, see if it belongs to ES. | |
2649 | */ | |
2650 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2651 | struct evpnes *es) | |
2652 | { | |
2653 | /* if not an ES route return false */ | |
2654 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2655 | return 0; | |
2656 | ||
2657 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2658 | return 1; | |
2659 | ||
2660 | return 0; | |
2661 | } | |
2662 | ||
5ba238b7 MK |
2663 | /* |
2664 | * Given a route entry and a VRF, see if this route entry should be | |
2665 | * imported into the VRF i.e., RTs match. | |
2666 | */ | |
4b7e6066 | 2667 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2668 | struct bgp_path_info *pi) |
5ba238b7 | 2669 | { |
40381db7 | 2670 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2671 | struct ecommunity *ecom; |
2672 | int i; | |
2673 | ||
2674 | assert(attr); | |
2675 | /* Route should have valid RT to be even considered. */ | |
2676 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2677 | return 0; | |
2678 | ||
2679 | ecom = attr->ecommunity; | |
2680 | if (!ecom || !ecom->size) | |
2681 | return 0; | |
2682 | ||
2683 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2684 | * matches, we're done. | |
2685 | */ | |
2686 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2687 | uint8_t *pnt; |
2688 | uint8_t type, sub_type; | |
5ba238b7 MK |
2689 | struct ecommunity_val *eval; |
2690 | struct ecommunity_val eval_tmp; | |
2691 | struct vrf_irt_node *irt; | |
2692 | ||
2693 | /* Only deal with RTs */ | |
2694 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2695 | eval = (struct ecommunity_val *)(ecom->val | |
2696 | + (i * ECOMMUNITY_SIZE)); | |
2697 | type = *pnt++; | |
2698 | sub_type = *pnt++; | |
2699 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2700 | continue; | |
2701 | ||
2702 | /* See if this RT matches specified VNIs import RTs */ | |
2703 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2704 | if (irt) |
5ba238b7 MK |
2705 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2706 | return 1; | |
2707 | ||
2708 | /* Also check for non-exact match. In this, we mask out the AS | |
2709 | * and | |
2710 | * only check on the local-admin sub-field. This is to | |
2711 | * facilitate using | |
2712 | * VNI as the RT for EBGP peering too. | |
2713 | */ | |
2714 | irt = NULL; | |
2715 | if (type == ECOMMUNITY_ENCODE_AS | |
2716 | || type == ECOMMUNITY_ENCODE_AS4 | |
2717 | || type == ECOMMUNITY_ENCODE_IP) { | |
2718 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2719 | mask_ecom_global_admin(&eval_tmp, eval); | |
2720 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2721 | } | |
5d9cbca2 | 2722 | if (irt) |
5ba238b7 MK |
2723 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2724 | return 1; | |
2725 | } | |
2726 | ||
2727 | return 0; | |
2728 | } | |
2729 | ||
128ea8ab | 2730 | /* |
2731 | * Given a route entry and a VNI, see if this route entry should be | |
2732 | * imported into the VNI i.e., RTs match. | |
2733 | */ | |
d62a17ae | 2734 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2735 | struct bgp_path_info *pi) |
d62a17ae | 2736 | { |
40381db7 | 2737 | struct attr *attr = pi->attr; |
d62a17ae | 2738 | struct ecommunity *ecom; |
2739 | int i; | |
2740 | ||
2741 | assert(attr); | |
2742 | /* Route should have valid RT to be even considered. */ | |
2743 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2744 | return 0; | |
2745 | ||
2746 | ecom = attr->ecommunity; | |
2747 | if (!ecom || !ecom->size) | |
2748 | return 0; | |
2749 | ||
2750 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2751 | * matches, we're done. | |
2752 | */ | |
2753 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2754 | uint8_t *pnt; |
2755 | uint8_t type, sub_type; | |
d62a17ae | 2756 | struct ecommunity_val *eval; |
2757 | struct ecommunity_val eval_tmp; | |
2758 | struct irt_node *irt; | |
2759 | ||
2760 | /* Only deal with RTs */ | |
2761 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2762 | eval = (struct ecommunity_val *)(ecom->val | |
2763 | + (i * ECOMMUNITY_SIZE)); | |
2764 | type = *pnt++; | |
2765 | sub_type = *pnt++; | |
2766 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2767 | continue; | |
2768 | ||
2769 | /* See if this RT matches specified VNIs import RTs */ | |
2770 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2771 | if (irt) |
d62a17ae | 2772 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2773 | return 1; | |
2774 | ||
2775 | /* Also check for non-exact match. In this, we mask out the AS | |
2776 | * and | |
2777 | * only check on the local-admin sub-field. This is to | |
2778 | * facilitate using | |
2779 | * VNI as the RT for EBGP peering too. | |
2780 | */ | |
2781 | irt = NULL; | |
2782 | if (type == ECOMMUNITY_ENCODE_AS | |
2783 | || type == ECOMMUNITY_ENCODE_AS4 | |
2784 | || type == ECOMMUNITY_ENCODE_IP) { | |
2785 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2786 | mask_ecom_global_admin(&eval_tmp, eval); | |
2787 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2788 | } | |
b1ab0dfe | 2789 | if (irt) |
d62a17ae | 2790 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2791 | return 1; | |
2792 | } | |
2793 | ||
2794 | return 0; | |
128ea8ab | 2795 | } |
2796 | ||
50f74cf1 | 2797 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2798 | struct evpnes *es, | |
2799 | int install) | |
2800 | { | |
2801 | int ret; | |
2802 | afi_t afi; | |
2803 | safi_t safi; | |
2804 | char buf[PREFIX_STRLEN]; | |
2805 | char buf1[ESI_STR_LEN]; | |
2806 | struct bgp_node *rd_rn, *rn; | |
2807 | struct bgp_table *table; | |
40381db7 | 2808 | struct bgp_path_info *pi; |
50f74cf1 | 2809 | |
2810 | afi = AFI_L2VPN; | |
2811 | safi = SAFI_EVPN; | |
2812 | ||
2bb9eff4 DS |
2813 | /* |
2814 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2815 | * imported into this VRF. Note that we need to loop through all global |
2816 | * routes to determine which route matches the import rt on vrf | |
2817 | */ | |
2818 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2819 | rd_rn = bgp_route_next(rd_rn)) { | |
2820 | table = (struct bgp_table *)(rd_rn->info); | |
2821 | if (!table) | |
2822 | continue; | |
2823 | ||
2824 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2825 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2826 | ||
40381db7 | 2827 | for (pi = rn->info; pi; pi = pi->next) { |
2bb9eff4 DS |
2828 | /* |
2829 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2830 | * this ES. |
2831 | */ | |
40381db7 DS |
2832 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2833 | && pi->type == ZEBRA_ROUTE_BGP | |
2834 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2835 | continue; |
2836 | ||
2bb9eff4 DS |
2837 | if (!is_prefix_matching_for_es(evp, es)) |
2838 | continue; | |
50f74cf1 | 2839 | |
2bb9eff4 DS |
2840 | if (install) |
2841 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2842 | bgp, es, evp, pi); |
2bb9eff4 DS |
2843 | else |
2844 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2845 | bgp, es, evp, pi); |
2bb9eff4 DS |
2846 | |
2847 | if (ret) { | |
af4c2728 | 2848 | flog_err( |
e50f7cfd | 2849 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2850 | "Failed to %s EVPN %s route in ESI %s", |
2851 | install ? "install" | |
2852 | : "uninstall", | |
2853 | prefix2str(evp, buf, | |
2854 | sizeof(buf)), | |
2855 | esi_to_str(&es->esi, buf1, | |
2856 | sizeof(buf1))); | |
2857 | return ret; | |
50f74cf1 | 2858 | } |
2859 | } | |
2860 | } | |
2861 | } | |
2862 | return 0; | |
2863 | } | |
2864 | ||
5ba238b7 MK |
2865 | /* |
2866 | * Install or uninstall mac-ip routes are appropriate for this | |
2867 | * particular VRF. | |
2868 | */ | |
996c9314 | 2869 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2870 | { |
2871 | afi_t afi; | |
2872 | safi_t safi; | |
2873 | struct bgp_node *rd_rn, *rn; | |
2874 | struct bgp_table *table; | |
40381db7 | 2875 | struct bgp_path_info *pi; |
5ba238b7 MK |
2876 | int ret; |
2877 | char buf[PREFIX_STRLEN]; | |
2878 | struct bgp *bgp_def = NULL; | |
2879 | ||
2880 | afi = AFI_L2VPN; | |
2881 | safi = SAFI_EVPN; | |
2882 | bgp_def = bgp_get_default(); | |
2883 | if (!bgp_def) | |
2884 | return -1; | |
2885 | ||
2886 | /* Walk entire global routing table and evaluate routes which could be | |
2887 | * imported into this VRF. Note that we need to loop through all global | |
2888 | * routes to determine which route matches the import rt on vrf | |
2889 | */ | |
2890 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2891 | rd_rn = bgp_route_next(rd_rn)) { | |
2892 | table = (struct bgp_table *)(rd_rn->info); | |
2893 | if (!table) | |
2894 | continue; | |
2895 | ||
2896 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2897 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2898 | ||
1eb88002 | 2899 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2900 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2901 | || evp->prefix.route_type | |
2902 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2903 | continue; |
2904 | ||
1eb88002 | 2905 | /* if not a mac+ip route skip this route */ |
3714a385 | 2906 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2907 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2908 | continue; |
2909 | ||
40381db7 | 2910 | for (pi = rn->info; pi; pi = pi->next) { |
5ba238b7 | 2911 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2912 | * this VRF. |
2913 | */ | |
40381db7 DS |
2914 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2915 | && pi->type == ZEBRA_ROUTE_BGP | |
2916 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2917 | continue; |
2918 | ||
40381db7 | 2919 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
5ba238b7 | 2920 | if (install) |
996c9314 | 2921 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2922 | bgp_vrf, evp, pi); |
5ba238b7 | 2923 | else |
996c9314 | 2924 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2925 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2926 | |
2927 | if (ret) { | |
af4c2728 | 2928 | flog_err( |
e50f7cfd | 2929 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2930 | "Failed to %s EVPN %s route in VRF %s", |
2931 | install ? "install" | |
2932 | : "uninstall", | |
2933 | prefix2str(evp, buf, | |
2934 | sizeof(buf)), | |
996c9314 LB |
2935 | vrf_id_to_name( |
2936 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2937 | return ret; |
2938 | } | |
2939 | } | |
2940 | } | |
2941 | } | |
2942 | } | |
2943 | ||
2944 | return 0; | |
2945 | } | |
2946 | ||
128ea8ab | 2947 | /* |
2948 | * Install or uninstall routes of specified type that are appropriate for this | |
2949 | * particular VNI. | |
2950 | */ | |
d62a17ae | 2951 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2952 | struct bgpevpn *vpn, | |
2953 | bgp_evpn_route_type rtype, | |
2954 | int install) | |
2955 | { | |
0291c246 MK |
2956 | afi_t afi; |
2957 | safi_t safi; | |
2958 | struct bgp_node *rd_rn, *rn; | |
2959 | struct bgp_table *table; | |
40381db7 | 2960 | struct bgp_path_info *pi; |
0291c246 | 2961 | int ret; |
d62a17ae | 2962 | |
2963 | afi = AFI_L2VPN; | |
2964 | safi = SAFI_EVPN; | |
2965 | ||
2966 | /* Walk entire global routing table and evaluate routes which could be | |
2967 | * imported into this VPN. Note that we cannot just look at the routes | |
2968 | * for | |
2969 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2970 | * RD. | |
2971 | */ | |
2972 | /* EVPN routes are a 2-level table. */ | |
2973 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2974 | rd_rn = bgp_route_next(rd_rn)) { | |
2975 | table = (struct bgp_table *)(rd_rn->info); | |
2976 | if (!table) | |
2977 | continue; | |
2978 | ||
2979 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2980 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2981 | ||
2982 | if (evp->prefix.route_type != rtype) | |
2983 | continue; | |
2984 | ||
40381db7 | 2985 | for (pi = rn->info; pi; pi = pi->next) { |
d62a17ae | 2986 | /* Consider "valid" remote routes applicable for |
2987 | * this VNI. */ | |
40381db7 DS |
2988 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2989 | && pi->type == ZEBRA_ROUTE_BGP | |
2990 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 2991 | continue; |
2992 | ||
40381db7 | 2993 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 2994 | if (install) |
2995 | ret = install_evpn_route_entry( | |
40381db7 | 2996 | bgp, vpn, evp, pi); |
d62a17ae | 2997 | else |
2998 | ret = uninstall_evpn_route_entry( | |
40381db7 | 2999 | bgp, vpn, evp, pi); |
d62a17ae | 3000 | |
3001 | if (ret) { | |
af4c2728 | 3002 | flog_err( |
e50f7cfd | 3003 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3004 | "%u: Failed to %s EVPN %s route in VNI %u", |
3005 | bgp->vrf_id, | |
3006 | install ? "install" | |
3007 | : "uninstall", | |
3008 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3009 | ? "MACIP" | |
3010 | : "IMET", | |
3011 | vpn->vni); | |
3012 | return ret; | |
3013 | } | |
3014 | } | |
3015 | } | |
3016 | } | |
3017 | } | |
3018 | ||
3019 | return 0; | |
128ea8ab | 3020 | } |
3021 | ||
50f74cf1 | 3022 | /* Install any existing remote ES routes applicable for this ES into its routing |
3023 | * table. This is invoked when ES comes up. | |
3024 | */ | |
3025 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3026 | { | |
3027 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3028 | } | |
3029 | ||
3030 | ||
5ba238b7 | 3031 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3032 | * is invoked upon l3vni-add or l3vni import rt change |
3033 | */ | |
5ba238b7 MK |
3034 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3035 | { | |
3036 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3037 | return 0; | |
3038 | } | |
3039 | ||
128ea8ab | 3040 | /* |
3041 | * Install any existing remote routes applicable for this VNI into its | |
3042 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3043 | * RT is changed. | |
3044 | */ | |
d62a17ae | 3045 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3046 | { |
d62a17ae | 3047 | int ret; |
128ea8ab | 3048 | |
d62a17ae | 3049 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3050 | * for this VNI. | |
3051 | */ | |
3052 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3053 | 1); | |
3054 | if (ret) | |
3055 | return ret; | |
128ea8ab | 3056 | |
d62a17ae | 3057 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3058 | 1); | |
128ea8ab | 3059 | } |
3060 | ||
5ba238b7 MK |
3061 | /* uninstall routes from l3vni vrf. */ |
3062 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3063 | { | |
3064 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3065 | return 0; | |
3066 | } | |
3067 | ||
90e60aa7 | 3068 | /* |
3069 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3070 | * this is invoked is upon an import RT change. | |
3071 | */ | |
d62a17ae | 3072 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3073 | { |
d62a17ae | 3074 | int ret; |
90e60aa7 | 3075 | |
d62a17ae | 3076 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3077 | * applicable | |
3078 | * for this VNI. | |
3079 | */ | |
3080 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3081 | 0); | |
3082 | if (ret) | |
3083 | return ret; | |
90e60aa7 | 3084 | |
d62a17ae | 3085 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3086 | 0); | |
90e60aa7 | 3087 | } |
3088 | ||
50f74cf1 | 3089 | /* Install or unistall route in ES */ |
3090 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3091 | afi_t afi, safi_t safi, | |
3092 | struct prefix_evpn *evp, | |
40381db7 | 3093 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3094 | { |
3095 | int ret = 0; | |
3096 | char buf[ESI_STR_LEN]; | |
3097 | ||
3098 | if (install) | |
40381db7 | 3099 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3100 | else |
40381db7 | 3101 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3102 | |
3103 | if (ret) { | |
af4c2728 | 3104 | flog_err( |
e50f7cfd | 3105 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3106 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3107 | install ? "install" : "uninstall", "ES", | |
3108 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3109 | return ret; |
3110 | } | |
3111 | return 0; | |
3112 | } | |
3113 | ||
d3135ba3 | 3114 | /* |
3115 | * Install or uninstall route in matching VRFs (list). | |
3116 | */ | |
3117 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3118 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3119 | struct bgp_path_info *pi, |
d3135ba3 | 3120 | struct list *vrfs, int install) |
3121 | { | |
3122 | char buf[PREFIX2STR_BUFFER]; | |
3123 | struct bgp *bgp_vrf; | |
3124 | struct listnode *node, *nnode; | |
3125 | ||
90264d64 | 3126 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3127 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3128 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3129 | return 0; |
3130 | ||
90264d64 | 3131 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3132 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3133 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3134 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3135 | return 0; |
3136 | ||
d3135ba3 | 3137 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3138 | int ret; | |
3139 | ||
3140 | if (install) | |
40381db7 | 3141 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3142 | else |
996c9314 | 3143 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3144 | pi); |
d3135ba3 | 3145 | |
3146 | if (ret) { | |
e50f7cfd | 3147 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3148 | "%u: Failed to %s prefix %s in VRF %s", |
3149 | bgp_def->vrf_id, | |
3150 | install ? "install" : "uninstall", | |
3151 | prefix2str(evp, buf, sizeof(buf)), | |
3152 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3153 | return ret; |
3154 | } | |
3155 | } | |
3156 | ||
3157 | return 0; | |
3158 | } | |
3159 | ||
128ea8ab | 3160 | /* |
3161 | * Install or uninstall route in matching VNIs (list). | |
3162 | */ | |
d62a17ae | 3163 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3164 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3165 | struct bgp_path_info *pi, |
d62a17ae | 3166 | struct list *vnis, int install) |
128ea8ab | 3167 | { |
d62a17ae | 3168 | struct bgpevpn *vpn; |
3169 | struct listnode *node, *nnode; | |
128ea8ab | 3170 | |
d62a17ae | 3171 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3172 | int ret; | |
128ea8ab | 3173 | |
d62a17ae | 3174 | if (!is_vni_live(vpn)) |
3175 | continue; | |
128ea8ab | 3176 | |
d62a17ae | 3177 | if (install) |
40381db7 | 3178 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3179 | else |
40381db7 | 3180 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3181 | |
d62a17ae | 3182 | if (ret) { |
1c50c1c0 QY |
3183 | flog_err(EC_BGP_EVPN_FAIL, |
3184 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3185 | bgp->vrf_id, install ? "install" : "uninstall", | |
3186 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3187 | ? "MACIP" | |
3188 | : "IMET", | |
3189 | vpn->vni); | |
d62a17ae | 3190 | return ret; |
3191 | } | |
3192 | } | |
128ea8ab | 3193 | |
d62a17ae | 3194 | return 0; |
128ea8ab | 3195 | } |
3196 | ||
3197 | /* | |
50f74cf1 | 3198 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3199 | */ |
d62a17ae | 3200 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3201 | struct prefix *p, |
40381db7 | 3202 | struct bgp_path_info *pi, int import) |
d62a17ae | 3203 | { |
3204 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3205 | struct attr *attr = pi->attr; |
d62a17ae | 3206 | struct ecommunity *ecom; |
3207 | int i; | |
3208 | ||
3209 | assert(attr); | |
3210 | ||
50f74cf1 | 3211 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3212 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3213 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3214 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3215 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3216 | return 0; |
3217 | ||
3218 | /* If we don't have Route Target, nothing much to do. */ | |
3219 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3220 | return 0; | |
3221 | ||
3222 | ecom = attr->ecommunity; | |
3223 | if (!ecom || !ecom->size) | |
3224 | return -1; | |
3225 | ||
50f74cf1 | 3226 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3227 | * attached to the route */ | |
d62a17ae | 3228 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3229 | uint8_t *pnt; |
3230 | uint8_t type, sub_type; | |
d62a17ae | 3231 | struct ecommunity_val *eval; |
3232 | struct ecommunity_val eval_tmp; | |
996c9314 | 3233 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3234 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3235 | struct evpnes *es; |
d62a17ae | 3236 | |
3237 | /* Only deal with RTs */ | |
3238 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3239 | eval = (struct ecommunity_val *)(ecom->val | |
3240 | + (i * ECOMMUNITY_SIZE)); | |
3241 | type = *pnt++; | |
3242 | sub_type = *pnt++; | |
3243 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3244 | continue; | |
3245 | ||
50f74cf1 | 3246 | /* |
3247 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3248 | * IMET route is imported into VNI table. | |
3249 | * prefix routes are imported into VRF table. | |
523cafc4 | 3250 | */ |
50f74cf1 | 3251 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3252 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3253 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3254 | |
50f74cf1 | 3255 | irt = lookup_import_rt(bgp, eval); |
3256 | if (irt) | |
40381db7 DS |
3257 | install_uninstall_route_in_vnis( |
3258 | bgp, afi, safi, evp, pi, irt->vnis, | |
3259 | import); | |
50f74cf1 | 3260 | |
3261 | vrf_irt = lookup_vrf_import_rt(eval); | |
3262 | if (vrf_irt) | |
40381db7 DS |
3263 | install_uninstall_route_in_vrfs( |
3264 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3265 | import); | |
50f74cf1 | 3266 | |
3267 | /* Also check for non-exact match. | |
3268 | * In this, we mask out the AS and | |
3269 | * only check on the local-admin sub-field. | |
3270 | * This is to facilitate using | |
3271 | * VNI as the RT for EBGP peering too. | |
3272 | */ | |
3273 | irt = NULL; | |
3274 | vrf_irt = NULL; | |
3275 | if (type == ECOMMUNITY_ENCODE_AS | |
3276 | || type == ECOMMUNITY_ENCODE_AS4 | |
3277 | || type == ECOMMUNITY_ENCODE_IP) { | |
3278 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3279 | mask_ecom_global_admin(&eval_tmp, eval); | |
3280 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3281 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3282 | } | |
3283 | ||
3284 | if (irt) | |
40381db7 DS |
3285 | install_uninstall_route_in_vnis( |
3286 | bgp, afi, safi, evp, pi, irt->vnis, | |
3287 | import); | |
50f74cf1 | 3288 | if (vrf_irt) |
40381db7 DS |
3289 | install_uninstall_route_in_vrfs( |
3290 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3291 | import); | |
50f74cf1 | 3292 | } |
3293 | ||
3294 | /* es route is imported into the es table */ | |
3295 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3296 | ||
3297 | /* we will match based on the entire esi to avoid | |
3298 | * imoort of an es route for esi2 into esi1 | |
3299 | */ | |
3300 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3301 | if (es && is_es_local(es)) | |
40381db7 DS |
3302 | install_uninstall_route_in_es( |
3303 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3304 | } |
d62a17ae | 3305 | } |
3306 | ||
3307 | return 0; | |
128ea8ab | 3308 | } |
3309 | ||
2bb9eff4 DS |
3310 | /* |
3311 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3312 | * routes | |
3313 | */ | |
80b140af MK |
3314 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3315 | { | |
3316 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3317 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3318 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3319 | |
3320 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3321 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3322 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3323 | } |
3324 | ||
2bb9eff4 DS |
3325 | /* |
3326 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3327 | * routes | |
3328 | */ | |
80b140af MK |
3329 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3330 | { | |
3331 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3332 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3333 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3334 | |
3335 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3336 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3337 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3338 | } |
3339 | ||
676f83b9 | 3340 | /* |
3341 | * update and advertise local routes for a VRF as type-5 routes. | |
3342 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3343 | * done in the global route table using the routes which already exist in the | |
3344 | * VRF routing table | |
3345 | */ | |
80b140af | 3346 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3347 | { |
80b140af MK |
3348 | /* skip if the RD is configured */ |
3349 | if (is_vrf_rd_configured(bgp_vrf)) | |
3350 | return; | |
3351 | ||
3352 | /* derive the RD for the VRF based on new router-id */ | |
3353 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3354 | ||
3355 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3356 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3357 | } |
3358 | ||
3359 | /* | |
3360 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3361 | * This is invoked upon VRF RD change. The processing is done only from global | |
3362 | * table. | |
3363 | */ | |
80b140af | 3364 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3365 | { |
80b140af MK |
3366 | /* skip if the RD is configured */ |
3367 | if (is_vrf_rd_configured(bgp_vrf)) | |
3368 | return; | |
3369 | ||
3370 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3371 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3372 | } |
3373 | ||
90e60aa7 | 3374 | /* |
3375 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3376 | * change. Note that the processing is done only on the global route table | |
3377 | * using routes that already exist in the per-VNI table. | |
3378 | */ | |
d62a17ae | 3379 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3380 | { | |
3381 | struct prefix_evpn p; | |
3382 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3383 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3384 | struct attr *attr; |
3385 | afi_t afi = AFI_L2VPN; | |
3386 | safi_t safi = SAFI_EVPN; | |
3387 | ||
3388 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3389 | * attributes to create and advertise the type-3 route for this VNI | |
3390 | * in the global table. | |
3391 | */ | |
3392 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3393 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3394 | if (!rn) /* unexpected */ | |
3395 | return 0; | |
40381db7 DS |
3396 | for (pi = rn->info; pi; pi = pi->next) |
3397 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP | |
3398 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3399 | break; |
40381db7 | 3400 | if (!pi) /* unexpected */ |
d62a17ae | 3401 | return 0; |
40381db7 | 3402 | attr = pi->attr; |
d62a17ae | 3403 | |
3404 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3405 | (struct prefix *)&p, &vpn->prd); | |
40381db7 DS |
3406 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, &pi, 0, |
3407 | mac_mobility_seqnum(attr)); | |
d62a17ae | 3408 | |
3409 | /* Schedule for processing and unlock node. */ | |
3410 | bgp_process(bgp, global_rn, afi, safi); | |
3411 | bgp_unlock_node(global_rn); | |
3412 | ||
3413 | /* Now, walk this VNI's route table and use the route and its attribute | |
3414 | * to create and schedule route in global table. | |
3415 | */ | |
3416 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3417 | rn = bgp_route_next(rn)) { | |
3418 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3419 | ||
3420 | /* Identify MAC-IP local routes. */ | |
3421 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3422 | continue; | |
3423 | ||
40381db7 DS |
3424 | for (pi = rn->info; pi; pi = pi->next) |
3425 | if (pi->peer == bgp->peer_self | |
3426 | && pi->type == ZEBRA_ROUTE_BGP | |
3427 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3428 | break; |
40381db7 | 3429 | if (!pi) |
d62a17ae | 3430 | continue; |
3431 | ||
3432 | /* Create route in global routing table using this route entry's | |
3433 | * attribute. | |
3434 | */ | |
40381db7 | 3435 | attr = pi->attr; |
d62a17ae | 3436 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3437 | (struct prefix *)evp, &vpn->prd); | |
3438 | assert(global_rn); | |
3439 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3440 | &global_pi, 0, |
f07e1c99 | 3441 | mac_mobility_seqnum(attr)); |
d62a17ae | 3442 | |
3443 | /* Schedule for processing and unlock node. */ | |
3444 | bgp_process(bgp, global_rn, afi, safi); | |
3445 | bgp_unlock_node(global_rn); | |
3446 | } | |
3447 | ||
3448 | return 0; | |
90e60aa7 | 3449 | } |
3450 | ||
3451 | /* | |
3452 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3453 | * table. Invoked upon router-id change. | |
3454 | */ | |
d62a17ae | 3455 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3456 | { |
d62a17ae | 3457 | int ret; |
3458 | struct prefix_evpn p; | |
3459 | struct bgp_node *global_rn; | |
40381db7 | 3460 | struct bgp_path_info *pi; |
d62a17ae | 3461 | afi_t afi = AFI_L2VPN; |
3462 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3463 | |
d62a17ae | 3464 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3465 | * for this VNI - from the global table. | |
3466 | */ | |
3467 | ret = delete_global_type2_routes(bgp, vpn); | |
3468 | if (ret) | |
3469 | return ret; | |
90e60aa7 | 3470 | |
d62a17ae | 3471 | /* Remove type-3 route for this VNI from global table. */ |
3472 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3473 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3474 | (struct prefix *)&p, &vpn->prd); | |
3475 | if (global_rn) { | |
3476 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3477 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3478 | |
d62a17ae | 3479 | /* Schedule for processing - withdraws to peers happen from |
3480 | * this table. | |
3481 | */ | |
40381db7 | 3482 | if (pi) |
d62a17ae | 3483 | bgp_process(bgp, global_rn, afi, safi); |
3484 | bgp_unlock_node(global_rn); | |
3485 | } | |
90e60aa7 | 3486 | |
d62a17ae | 3487 | return 0; |
90e60aa7 | 3488 | } |
3489 | ||
2d48ee25 | 3490 | /* |
3491 | * Handle router-id change. Update and advertise local routes corresponding | |
3492 | * to this VNI from peers. Note that this is invoked after updating the | |
3493 | * router-id. The routes in the per-VNI table are used to create routes in | |
3494 | * the global table and schedule them. | |
3495 | */ | |
d62a17ae | 3496 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3497 | { |
0a1a07cb | 3498 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3499 | |
d62a17ae | 3500 | /* Skip VNIs with configured RD. */ |
3501 | if (is_rd_configured(vpn)) | |
3502 | return; | |
2d48ee25 | 3503 | |
d62a17ae | 3504 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3505 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3506 | } |
3507 | ||
3508 | /* | |
3509 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3510 | * to this VNI from peers. Note that this is invoked prior to updating | |
3511 | * the router-id and is done only on the global route table, the routes | |
3512 | * are needed in the per-VNI table to re-advertise with new router id. | |
3513 | */ | |
d62a17ae | 3514 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3515 | { |
0a1a07cb | 3516 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3517 | |
d62a17ae | 3518 | /* Skip VNIs with configured RD. */ |
3519 | if (is_rd_configured(vpn)) | |
3520 | return; | |
2d48ee25 | 3521 | |
d62a17ae | 3522 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3523 | } |
3524 | ||
128ea8ab | 3525 | /* |
3526 | * Process received EVPN type-2 route (advertise or withdraw). | |
3527 | */ | |
d62a17ae | 3528 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3529 | struct attr *attr, uint8_t *pfx, int psize, |
3530 | uint32_t addpath_id) | |
d62a17ae | 3531 | { |
3532 | struct prefix_rd prd; | |
3533 | struct prefix_evpn p; | |
554cd77a | 3534 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3535 | uint8_t ipaddr_len; |
3536 | uint8_t macaddr_len; | |
b57ba6d2 | 3537 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3538 | uint32_t num_labels = 0; |
554cd77a | 3539 | uint32_t eth_tag; |
d62a17ae | 3540 | int ret; |
3541 | ||
3542 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3543 | * additional 3 bytes if there is a second label (VNI): | |
3544 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3545 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3546 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3547 | */ | |
3548 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3549 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3550 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3551 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3552 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3553 | return -1; |
3554 | } | |
3555 | ||
554cd77a VB |
3556 | memset(&evpn, 0, sizeof(evpn)); |
3557 | ||
d62a17ae | 3558 | /* Make prefix_rd */ |
3559 | prd.family = AF_UNSPEC; | |
3560 | prd.prefixlen = 64; | |
3561 | memcpy(&prd.val, pfx, 8); | |
3562 | pfx += 8; | |
3563 | ||
3564 | /* Make EVPN prefix. */ | |
3565 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3566 | p.family = AF_EVPN; |
50f74cf1 | 3567 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3568 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3569 | ||
554cd77a VB |
3570 | /* Copy Ethernet Seg Identifier */ |
3571 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3572 | pfx += ESI_LEN; | |
d62a17ae | 3573 | |
554cd77a VB |
3574 | /* Copy Ethernet Tag */ |
3575 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3576 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3577 | pfx += 4; |
3578 | ||
3579 | /* Get the MAC Addr len */ | |
3580 | macaddr_len = *pfx++; | |
3581 | ||
3582 | /* Get the MAC Addr */ | |
28328ea9 | 3583 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3584 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3585 | pfx += ETH_ALEN; |
d62a17ae | 3586 | } else { |
af4c2728 | 3587 | flog_err( |
e50f7cfd | 3588 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3589 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3590 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3591 | return -1; | |
3592 | } | |
3593 | ||
3594 | ||
3595 | /* Get the IP. */ | |
3596 | ipaddr_len = *pfx++; | |
3597 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3598 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3599 | flog_err( |
e50f7cfd | 3600 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3601 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3602 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3603 | return -1; | |
3604 | } | |
3605 | ||
3606 | if (ipaddr_len) { | |
3607 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3608 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3609 | ? IPADDR_V4 |
3610 | : IPADDR_V6; | |
3714a385 | 3611 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3612 | } |
3613 | pfx += ipaddr_len; | |
3614 | ||
b57ba6d2 MK |
3615 | /* Get the VNI(s). Stored as bytes here. */ |
3616 | num_labels++; | |
3617 | memset(label, 0, sizeof(label)); | |
3618 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3619 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3620 | psize -= (33 + ipaddr_len); |
3621 | /* Do we have a second VNI? */ | |
3622 | if (psize) { | |
3623 | num_labels++; | |
3624 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3625 | /* |
3626 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3627 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3628 | * the next field | |
6b11bd8d | 3629 | */ |
b57ba6d2 | 3630 | } |
d62a17ae | 3631 | |
3632 | /* Process the route. */ | |
3633 | if (attr) | |
3634 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3635 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3636 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3637 | else |
3638 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3639 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3640 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3641 | return ret; |
128ea8ab | 3642 | } |
3643 | ||
3644 | /* | |
3645 | * Process received EVPN type-3 route (advertise or withdraw). | |
3646 | */ | |
d62a17ae | 3647 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3648 | struct attr *attr, uint8_t *pfx, int psize, |
3649 | uint32_t addpath_id) | |
d62a17ae | 3650 | { |
3651 | struct prefix_rd prd; | |
3652 | struct prefix_evpn p; | |
d7c0a89a | 3653 | uint8_t ipaddr_len; |
554cd77a | 3654 | uint32_t eth_tag; |
d62a17ae | 3655 | int ret; |
3656 | ||
3657 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3658 | * IP len (1) and IP (4 or 16). | |
3659 | */ | |
3660 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3661 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3662 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3663 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3664 | return -1; |
3665 | } | |
3666 | ||
7fd077aa | 3667 | /* If PMSI is present, log if it is anything other than IR. |
3668 | * Note: We just simply ignore the values as it is not clear if | |
3669 | * doing anything else is better. | |
3670 | */ | |
3671 | if (attr && | |
3672 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3673 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
ade6974d | 3674 | flog_warn( |
e50f7cfd | 3675 | EC_BGP_EVPN_PMSI_PRESENT, |
ade6974d QY |
3676 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
3677 | peer->bgp->vrf_id, peer->host, | |
3678 | attr->pmsi_tnl_type); | |
7fd077aa | 3679 | } |
3680 | } | |
3681 | ||
d62a17ae | 3682 | /* Make prefix_rd */ |
3683 | prd.family = AF_UNSPEC; | |
3684 | prd.prefixlen = 64; | |
3685 | memcpy(&prd.val, pfx, 8); | |
3686 | pfx += 8; | |
3687 | ||
3688 | /* Make EVPN prefix. */ | |
3689 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3690 | p.family = AF_EVPN; |
50f74cf1 | 3691 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3692 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3693 | ||
554cd77a VB |
3694 | /* Copy Ethernet Tag */ |
3695 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3696 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3697 | pfx += 4; |
3698 | ||
3699 | /* Get the IP. */ | |
3700 | ipaddr_len = *pfx++; | |
3701 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3702 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3703 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3704 | } else { |
af4c2728 | 3705 | flog_err( |
e50f7cfd | 3706 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3707 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3708 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3709 | return -1; | |
3710 | } | |
3711 | ||
3712 | /* Process the route. */ | |
3713 | if (attr) | |
3714 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3715 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3716 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3717 | else |
3718 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3719 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3720 | &prd, NULL, 0, NULL); |
d62a17ae | 3721 | return ret; |
128ea8ab | 3722 | } |
3723 | ||
50f74cf1 | 3724 | /* |
3725 | * Process received EVPN type-4 route (advertise or withdraw). | |
3726 | */ | |
3727 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3728 | struct attr *attr, uint8_t *pfx, int psize, | |
3729 | uint32_t addpath_id) | |
3730 | { | |
3731 | int ret; | |
3732 | esi_t esi; | |
3733 | uint8_t ipaddr_len; | |
3734 | struct in_addr vtep_ip; | |
3735 | struct prefix_rd prd; | |
3736 | struct prefix_evpn p; | |
3737 | ||
3738 | /* Type-4 route should be either 23 or 35 bytes | |
3739 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3740 | */ | |
3741 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3742 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3743 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3744 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3745 | return -1; |
3746 | } | |
3747 | ||
3748 | /* Make prefix_rd */ | |
3749 | prd.family = AF_UNSPEC; | |
3750 | prd.prefixlen = 64; | |
3751 | memcpy(&prd.val, pfx, 8); | |
3752 | pfx += 8; | |
3753 | ||
3754 | /* get the ESI */ | |
3755 | memcpy(&esi, pfx, ESI_BYTES); | |
3756 | pfx += ESI_BYTES; | |
3757 | ||
3758 | ||
3759 | /* Get the IP. */ | |
3760 | ipaddr_len = *pfx++; | |
3761 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3762 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3763 | } else { | |
af4c2728 | 3764 | flog_err( |
e50f7cfd | 3765 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 3766 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3767 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3768 | return -1; | |
3769 | } | |
3770 | ||
3771 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3772 | /* Process the route. */ | |
3773 | if (attr) { | |
3774 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3775 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3776 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3777 | } else { |
50f74cf1 | 3778 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3779 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3780 | &prd, NULL, 0, NULL); | |
3781 | } | |
3782 | return ret; | |
3783 | } | |
3784 | ||
3785 | ||
128ea8ab | 3786 | /* |
3787 | * Process received EVPN type-5 route (advertise or withdraw). | |
3788 | */ | |
d62a17ae | 3789 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3790 | struct attr *attr, uint8_t *pfx, int psize, |
3791 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3792 | { |
3793 | struct prefix_rd prd; | |
3794 | struct prefix_evpn p; | |
3795 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3796 | uint8_t ippfx_len; |
3797 | uint32_t eth_tag; | |
b57ba6d2 | 3798 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3799 | int ret; |
3800 | ||
3801 | /* Type-5 route should be 34 or 58 bytes: | |
3802 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3803 | * GW (4 or 16) and VNI (3). | |
3804 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3805 | */ | |
3806 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3807 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3808 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3809 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3810 | return -1; |
3811 | } | |
3812 | ||
3813 | /* Make prefix_rd */ | |
3814 | prd.family = AF_UNSPEC; | |
3815 | prd.prefixlen = 64; | |
3816 | memcpy(&prd.val, pfx, 8); | |
3817 | pfx += 8; | |
3818 | ||
3819 | /* Make EVPN prefix. */ | |
3820 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3821 | p.family = AF_EVPN; |
50f74cf1 | 3822 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3823 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3824 | ||
3825 | /* Additional information outside of prefix - ESI and GW IP */ | |
3826 | memset(&evpn, 0, sizeof(evpn)); | |
3827 | ||
3828 | /* Fetch ESI */ | |
3829 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3830 | pfx += 10; | |
3831 | ||
3832 | /* Fetch Ethernet Tag. */ | |
3833 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3834 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3835 | pfx += 4; |
3836 | ||
3837 | /* Fetch IP prefix length. */ | |
3838 | ippfx_len = *pfx++; | |
3839 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3840 | flog_err( |
e50f7cfd | 3841 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3842 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3843 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3844 | return -1; | |
3845 | } | |
3714a385 | 3846 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3847 | |
3848 | /* Determine IPv4 or IPv6 prefix */ | |
3849 | /* Since the address and GW are from the same family, this just becomes | |
3850 | * a simple check on the total size. | |
3851 | */ | |
3852 | if (psize == 34) { | |
3714a385 | 3853 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3854 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3855 | pfx += 4; |
3856 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3857 | pfx += 4; | |
d62a17ae | 3858 | } else { |
3714a385 | 3859 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3860 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3861 | pfx += 16; |
3862 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3863 | pfx += 16; | |
d62a17ae | 3864 | } |
3865 | ||
b57ba6d2 MK |
3866 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3867 | memset(&label, 0, sizeof(label)); | |
3868 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3869 | |
3870 | /* | |
3871 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3872 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3873 | * field | |
6b11bd8d | 3874 | */ |
d62a17ae | 3875 | |
3876 | /* Process the route. */ | |
3877 | if (!withdraw) | |
3878 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3879 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3880 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3881 | else |
3882 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3883 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3884 | &prd, &label, 1, &evpn); |
d62a17ae | 3885 | |
3886 | return ret; | |
3887 | } | |
3888 | ||
3889 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3890 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3891 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3892 | { |
3893 | int len; | |
3894 | char temp[16]; | |
3895 | struct evpn_addr *p_evpn_p; | |
3896 | ||
3897 | memset(&temp, 0, 16); | |
b03b8898 | 3898 | if (p->family != AF_EVPN) |
d62a17ae | 3899 | return; |
3900 | p_evpn_p = &(p->u.prefix_evpn); | |
3901 | ||
e9fc2840 | 3902 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3903 | IP and GW-IP have to be both ipv4 or ipv6 |
3904 | */ | |
3714a385 | 3905 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3906 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3907 | else |
e9fc2840 | 3908 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3909 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3910 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3911 | stream_put(s, prd->val, 8); | |
0af35d90 | 3912 | if (attr) |
d62a17ae | 3913 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3914 | else | |
3915 | stream_put(s, &temp, 10); | |
3714a385 | 3916 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3917 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3918 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3919 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3920 | else |
3714a385 | 3921 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3922 | if (attr) { |
3714a385 | 3923 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3924 | stream_put_ipv4(s, |
3925 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3926 | else | |
3927 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3928 | } else { | |
3714a385 | 3929 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3930 | stream_put_ipv4(s, 0); |
3931 | else | |
3932 | stream_put(s, &temp, 16); | |
3933 | } | |
3934 | ||
b57ba6d2 | 3935 | if (num_labels) |
d62a17ae | 3936 | stream_put(s, label, 3); |
3937 | else | |
3938 | stream_put3(s, 0); | |
128ea8ab | 3939 | } |
3940 | ||
3941 | /* | |
3942 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3943 | */ | |
d62a17ae | 3944 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3945 | { |
d62a17ae | 3946 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3947 | |
d62a17ae | 3948 | /* Remove EVPN routes and schedule for processing. */ |
3949 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3950 | |
d62a17ae | 3951 | /* Clear "live" flag and see if hash needs to be freed. */ |
3952 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3953 | if (!is_vni_configured(vpn)) | |
3954 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3955 | } |
3956 | ||
3957 | /* | |
3958 | * Free a VNI entry; iterator function called during cleanup. | |
3959 | */ | |
d62a17ae | 3960 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3961 | { |
0a1a07cb | 3962 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3963 | |
d62a17ae | 3964 | delete_all_vni_routes(bgp, vpn); |
3965 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3966 | } |
3967 | ||
c581d8b0 MK |
3968 | /* |
3969 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3970 | */ | |
3971 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3972 | { | |
10ebe1ab MK |
3973 | struct bgp *bgp_def = NULL; |
3974 | ||
c581d8b0 | 3975 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3976 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3977 | ||
3978 | /* Map RT to VRF */ | |
3979 | bgp_def = bgp_get_default(); | |
3980 | if (!bgp_def) | |
3981 | return; | |
3982 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3983 | } |
3984 | ||
3985 | /* | |
3986 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3987 | */ | |
3988 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3989 | { | |
3990 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
3991 | } | |
3992 | ||
3993 | /* | |
3994 | * Derive AUTO export RT for BGP VRF - L3VNI | |
3995 | */ | |
3996 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
3997 | { | |
3998 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3999 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4000 | } | |
4001 | ||
4002 | /* | |
4003 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4004 | */ | |
4005 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4006 | { | |
4007 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4008 | } | |
128ea8ab | 4009 | |
f1f8b53c MK |
4010 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4011 | { | |
4012 | struct bgp *bgp_def = NULL; | |
4013 | struct listnode *node = NULL; | |
4014 | struct bgpevpn *vpn = NULL; | |
4015 | ||
4016 | bgp_def = bgp_get_default(); | |
4017 | if (!bgp_def) | |
4018 | return; | |
4019 | ||
4992b4ae MK |
4020 | /* update all type-5 routes */ |
4021 | update_advertise_vrf_routes(bgp_vrf); | |
4022 | ||
4023 | /* update all type-2 routes */ | |
f1f8b53c MK |
4024 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4025 | update_routes_for_vni(bgp_def, vpn); | |
4026 | } | |
4027 | ||
bf1061d8 VB |
4028 | /* |
4029 | * Handle autort change for a given VNI. | |
4030 | */ | |
4031 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4032 | { | |
4033 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 | 4034 | |
bf1061d8 VB |
4035 | if (!is_import_rt_configured(vpn)) { |
4036 | if (is_vni_live(vpn)) | |
4037 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4038 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4039 | list_delete_all_node(vpn->import_rtl); |
4040 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4041 | if (is_vni_live(vpn)) | |
4042 | bgp_evpn_install_routes(bgp, vpn); | |
4043 | } | |
4044 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4045 | list_delete_all_node(vpn->export_rtl); |
4046 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4047 | if (is_vni_live(vpn)) | |
4048 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4049 | } | |
4050 | } | |
4051 | ||
128ea8ab | 4052 | /* |
4053 | * Public functions. | |
4054 | */ | |
4055 | ||
5424b7ba | 4056 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4057 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4058 | afi_t afi, safi_t safi) |
4059 | { | |
4060 | int ret = 0; | |
4061 | struct prefix_evpn evp; | |
4062 | char buf[PREFIX_STRLEN]; | |
4063 | ||
31310b25 | 4064 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4065 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4066 | if (ret) { | |
af4c2728 | 4067 | flog_err( |
e50f7cfd | 4068 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4069 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4070 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4071 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4072 | } |
4073 | } | |
4074 | ||
342dd0c6 | 4075 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4076 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4077 | { |
4078 | struct bgp_table *table = NULL; | |
4079 | struct bgp_node *rn = NULL; | |
40381db7 | 4080 | struct bgp_path_info *pi; |
342dd0c6 | 4081 | |
053905d2 | 4082 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4083 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4084 | /* Only care about "selected" routes - non-imported. */ | |
4085 | /* TODO: Support for AddPath for EVPN. */ | |
40381db7 DS |
4086 | for (pi = rn->info; pi; pi = pi->next) { |
4087 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) | |
4088 | && (!pi->extra || !pi->extra->parent)) { | |
25f2ca53 | 4089 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4090 | afi, safi); | |
4091 | break; | |
4092 | } | |
4093 | } | |
4094 | } | |
5424b7ba | 4095 | } |
342dd0c6 | 4096 | |
2f69f6d3 | 4097 | /* |
4098 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4099 | * to this function correspond to those of the source IP prefix (best | |
4100 | * path in the case of the attr. In the case of a local prefix (when we | |
4101 | * are advertising local subnets), the src_attr will be NULL. | |
4102 | */ | |
31310b25 | 4103 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4104 | struct attr *src_attr, afi_t afi, |
4105 | safi_t safi) | |
5424b7ba MK |
4106 | { |
4107 | int ret = 0; | |
4108 | struct prefix_evpn evp; | |
4109 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4110 | |
31310b25 | 4111 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4112 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4113 | if (ret) | |
e50f7cfd | 4114 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4115 | "%u: Failed to create type-5 route for prefix %s", |
4116 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4117 | } |
4118 | ||
2f69f6d3 | 4119 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4120 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4121 | * advertisement is enabled. | |
4122 | */ | |
996c9314 LB |
4123 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4124 | safi_t safi) | |
342dd0c6 | 4125 | { |
4126 | struct bgp_table *table = NULL; | |
4127 | struct bgp_node *rn = NULL; | |
40381db7 | 4128 | struct bgp_path_info *pi; |
342dd0c6 | 4129 | |
053905d2 | 4130 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4131 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4132 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4133 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4134 | * TODO: Support for AddPath for EVPN. |
4135 | */ | |
40381db7 DS |
4136 | for (pi = rn->info; pi; pi = pi->next) { |
4137 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) | |
4138 | && (!pi->extra || !pi->extra->parent)) { | |
53c84f78 MK |
4139 | |
4140 | /* apply the route-map */ | |
4141 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4142 | int ret = 0; | |
4143 | ||
996c9314 LB |
4144 | ret = route_map_apply( |
4145 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4146 | .map, | |
40381db7 | 4147 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4148 | if (ret == RMAP_DENYMATCH) |
4149 | continue; | |
4150 | } | |
996c9314 | 4151 | bgp_evpn_advertise_type5_route( |
40381db7 | 4152 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4153 | break; |
4154 | } | |
4155 | } | |
31310b25 | 4156 | } |
342dd0c6 | 4157 | } |
4158 | ||
996c9314 | 4159 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4160 | { |
4161 | struct listnode *node, *nnode, *node_to_del; | |
4162 | struct ecommunity *ecom, *ecom_auto; | |
4163 | struct ecommunity_val eval; | |
4164 | ||
bf1061d8 VB |
4165 | if (bgp->advertise_autort_rfc8365) |
4166 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4167 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4168 | ||
4169 | ecom_auto = ecommunity_new(); | |
4170 | ecommunity_add_val(ecom_auto, &eval); | |
4171 | node_to_del = NULL; | |
4172 | ||
4173 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4174 | if (ecommunity_match(ecom, ecom_auto)) { | |
4175 | ecommunity_free(&ecom); | |
4176 | node_to_del = node; | |
4177 | } | |
4178 | } | |
4179 | ||
4180 | if (node_to_del) | |
4181 | list_delete_node(rtl, node_to_del); | |
4182 | ||
4183 | ecommunity_free(&ecom_auto); | |
4184 | } | |
4185 | ||
4186 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4187 | struct ecommunity *ecomadd) |
c581d8b0 | 4188 | { |
5ba238b7 MK |
4189 | /* uninstall routes from vrf */ |
4190 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4191 | |
4192 | /* Cleanup the RT to VRF mapping */ | |
4193 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4194 | ||
c581d8b0 MK |
4195 | /* Remove auto generated RT */ |
4196 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4197 | ||
4198 | /* Add the newly configured RT to RT list */ | |
4199 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4200 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4201 | ||
10ebe1ab MK |
4202 | /* map VRF to its RTs */ |
4203 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4204 | ||
5ba238b7 MK |
4205 | /* install routes matching the new VRF */ |
4206 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4207 | } |
4208 | ||
4209 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4210 | struct ecommunity *ecomdel) | |
4211 | { | |
4212 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4213 | struct ecommunity *ecom = NULL; | |
4214 | ||
5ba238b7 MK |
4215 | /* uninstall routes from vrf */ |
4216 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4217 | |
4218 | /* Cleanup the RT to VRF mapping */ | |
4219 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4220 | ||
c581d8b0 MK |
4221 | /* remove the RT from the RT list */ |
4222 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4223 | if (ecommunity_match(ecom, ecomdel)) { | |
4224 | ecommunity_free(&ecom); | |
4225 | node_to_del = node; | |
4226 | break; | |
4227 | } | |
4228 | } | |
4229 | ||
4230 | if (node_to_del) | |
4231 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4232 | ||
b3a4db3d | 4233 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4234 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4235 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4236 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4237 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4238 | } | |
4239 | ||
10ebe1ab MK |
4240 | /* map VRFs to its RTs */ |
4241 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4242 | ||
5ba238b7 MK |
4243 | /* install routes matching this new RT */ |
4244 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4245 | } |
4246 | ||
4247 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4248 | struct ecommunity *ecomadd) | |
4249 | { | |
4250 | /* remove auto-generated RT */ | |
4251 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4252 | ||
4253 | /* Add the new RT to the RT list */ | |
4254 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4255 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4256 | ||
f1f8b53c | 4257 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4258 | } |
4259 | ||
4260 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4261 | struct ecommunity *ecomdel) | |
4262 | { | |
4263 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4264 | struct ecommunity *ecom = NULL; | |
4265 | ||
4266 | /* Remove the RT from the RT list */ | |
4267 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4268 | if (ecommunity_match(ecom, ecomdel)) { | |
4269 | ecommunity_free(&ecom); | |
4270 | node_to_del = node; | |
4271 | break; | |
4272 | } | |
4273 | } | |
4274 | ||
4275 | if (node_to_del) | |
4276 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4277 | ||
1525e99f DS |
4278 | /* |
4279 | * Temporary assert to make SA happy. | |
4280 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4281 | * which means that SA is going to complain about | |
4282 | * the list_isempty call, which doesn't NULL check. | |
4283 | * So until we get this situation cleaned up, here | |
4284 | * we are. | |
4285 | */ | |
4286 | assert(bgp_vrf->vrf_export_rtl); | |
4287 | ||
c581d8b0 | 4288 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4289 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4290 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4291 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4292 | } | |
4293 | ||
f1f8b53c | 4294 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4295 | } |
4296 | ||
2d48ee25 | 4297 | /* |
4298 | * Handle change to BGP router id. This is invoked twice by the change | |
4299 | * handler, first before the router id has been changed and then after | |
4300 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4301 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4302 | * will result in the routes being re-advertised. |
4303 | */ | |
d62a17ae | 4304 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4305 | { |
676f83b9 | 4306 | if (withdraw) { |
4307 | ||
4308 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4309 | stored in the global table for this vrf |
4310 | */ | |
80b140af | 4311 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4312 | |
4313 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4314 | * L2-VNIs |
4315 | */ | |
d62a17ae | 4316 | hash_iterate(bgp->vnihash, |
4317 | (void (*)(struct hash_backet *, | |
4318 | void *))withdraw_router_id_vni, | |
4319 | bgp); | |
676f83b9 | 4320 | } else { |
4321 | ||
4322 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4323 | * RD |
4324 | */ | |
80b140af | 4325 | update_router_id_vrf(bgp); |
676f83b9 | 4326 | |
4327 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4328 | * new RD |
4329 | */ | |
d62a17ae | 4330 | hash_iterate(bgp->vnihash, |
4331 | (void (*)(struct hash_backet *, | |
4332 | void *))update_router_id_vni, | |
4333 | bgp); | |
676f83b9 | 4334 | } |
2d48ee25 | 4335 | } |
4336 | ||
bf1061d8 VB |
4337 | /* |
4338 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4339 | */ | |
4340 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4341 | { | |
4342 | hash_iterate(bgp->vnihash, | |
4343 | (void (*)(struct hash_backet *, | |
4344 | void*))update_autort_vni, | |
4345 | bgp); | |
4346 | } | |
4347 | ||
90e60aa7 | 4348 | /* |
4349 | * Handle change to export RT - update and advertise local routes. | |
4350 | */ | |
d62a17ae | 4351 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4352 | { |
d62a17ae | 4353 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4354 | } |
4355 | ||
996c9314 | 4356 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4357 | { |
4358 | if (withdraw) | |
4359 | delete_withdraw_vrf_routes(bgp_vrf); | |
4360 | else | |
4361 | update_advertise_vrf_routes(bgp_vrf); | |
4362 | } | |
4363 | ||
90e60aa7 | 4364 | /* |
4365 | * Handle change to RD. This is invoked twice by the change handler, | |
4366 | * first before the RD has been changed and then after the RD has | |
4367 | * been changed. The first invocation will result in local routes | |
4368 | * of this VNI being deleted and withdrawn and the next will result | |
4369 | * in the routes being re-advertised. | |
4370 | */ | |
d62a17ae | 4371 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4372 | int withdraw) | |
90e60aa7 | 4373 | { |
d62a17ae | 4374 | if (withdraw) |
4375 | delete_withdraw_vni_routes(bgp, vpn); | |
4376 | else | |
4377 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4378 | } |
4379 | ||
4380 | /* | |
4381 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4382 | */ | |
d62a17ae | 4383 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4384 | { |
d62a17ae | 4385 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4386 | } |
4387 | ||
4388 | /* | |
4389 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4390 | * to Import RT. | |
4391 | */ | |
d62a17ae | 4392 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4393 | { |
d62a17ae | 4394 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4395 | } |
4396 | ||
b16031a2 | 4397 | /* |
b57ba6d2 | 4398 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4399 | */ |
d7c0a89a | 4400 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4401 | int len) |
b16031a2 | 4402 | { |
b57ba6d2 | 4403 | vni_t vni1, vni2; |
b16031a2 | 4404 | |
b57ba6d2 MK |
4405 | vni1 = label2vni(label); |
4406 | if (num_labels == 2) { | |
996c9314 | 4407 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4408 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4409 | } else | |
4410 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4411 | return buf; |
b16031a2 | 4412 | } |
4413 | ||
9c92b5f7 MK |
4414 | /* |
4415 | * Function to convert evpn route to json format. | |
4416 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4417 | */ | |
57f7feb6 | 4418 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4419 | { |
b682f6de | 4420 | char buf1[ETHER_ADDR_STRLEN]; |
4421 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4422 | |
b682f6de | 4423 | if (!json) |
4424 | return; | |
9c92b5f7 | 4425 | |
dff8f48d | 4426 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4427 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4428 | json_object_int_add(json, "ethTag", |
4429 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4430 | json_object_int_add(json, "ipLen", |
3714a385 | 4431 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4432 | ? IPV4_MAX_BITLEN |
4433 | : IPV6_MAX_BITLEN); | |
b682f6de | 4434 | json_object_string_add(json, "ip", |
3714a385 | 4435 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4436 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4437 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4438 | json_object_int_add(json, "routeType", |
4439 | p->prefix.route_type); | |
3714a385 | 4440 | json_object_int_add(json, "ethTag", |
4441 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4442 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4443 | json_object_string_add(json, "mac", | |
3714a385 | 4444 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4445 | buf1, |
4446 | sizeof(buf1))); | |
dff8f48d | 4447 | } else { |
d7c0a89a | 4448 | uint8_t family; |
dff8f48d | 4449 | |
3714a385 | 4450 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4451 | : AF_INET6; |
dff8f48d | 4452 | |
b682f6de | 4453 | json_object_int_add(json, "routeType", |
57f7feb6 | 4454 | p->prefix.route_type); |
3714a385 | 4455 | json_object_int_add(json, "ethTag", |
4456 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4457 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4458 | json_object_string_add(json, "mac", |
3714a385 | 4459 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4460 | buf1, |
4461 | sizeof(buf1))); | |
b682f6de | 4462 | json_object_int_add(json, "ipLen", |
3714a385 | 4463 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4464 | ? IPV4_MAX_BITLEN |
4465 | : IPV6_MAX_BITLEN); | |
4466 | json_object_string_add( | |
4467 | json, "ip", | |
3714a385 | 4468 | inet_ntop(family, |
4469 | &p->prefix.macip_addr.ip.ip.addr, | |
4470 | buf2, | |
57f7feb6 | 4471 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4472 | } |
4473 | } else { | |
4474 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4475 | } | |
9c92b5f7 MK |
4476 | } |
4477 | ||
520d5d76 | 4478 | /* |
4479 | * Function to convert evpn route to string. | |
4480 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4481 | */ | |
d62a17ae | 4482 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4483 | { | |
4484 | char buf1[ETHER_ADDR_STRLEN]; | |
4485 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4486 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4487 | |
4488 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4489 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4490 | p->prefix.imet_addr.eth_tag, |
4491 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4492 | : IPV6_MAX_BITLEN, |
3714a385 | 4493 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4494 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4495 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4496 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4497 | p->prefix.route_type, | |
3714a385 | 4498 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4499 | 8 * ETH_ALEN, |
3714a385 | 4500 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4501 | sizeof(buf1))); |
4502 | else { | |
d7c0a89a | 4503 | uint8_t family; |
d62a17ae | 4504 | |
3714a385 | 4505 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4506 | : AF_INET6; |
554cd77a VB |
4507 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4508 | p->prefix.route_type, | |
3714a385 | 4509 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4510 | 8 * ETH_ALEN, |
3714a385 | 4511 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4512 | sizeof(buf1)), |
4513 | family == AF_INET ? IPV4_MAX_BITLEN | |
4514 | : IPV6_MAX_BITLEN, | |
3714a385 | 4515 | inet_ntop(family, |
4516 | &p->prefix.macip_addr.ip.ip.addr, | |
4517 | buf2, | |
d62a17ae | 4518 | PREFIX2STR_BUFFER)); |
4519 | } | |
342dd0c6 | 4520 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4521 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4522 | p->prefix.route_type, | |
3714a385 | 4523 | p->prefix.prefix_addr.eth_tag, |
4524 | p->prefix.prefix_addr.ip_prefix_length, | |
4525 | is_evpn_prefix_ipaddr_v4(p) | |
4526 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4527 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4528 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4529 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4530 | p->prefix.route_type, | |
4531 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4532 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4533 | : IPV6_MAX_BITLEN, | |
4534 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4535 | } else { |
b03b8898 | 4536 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4537 | snprintf(buf, len, "(unsupported route type %d)", |
4538 | p->prefix.route_type); | |
d62a17ae | 4539 | } |
4540 | ||
4541 | return (buf); | |
520d5d76 | 4542 | } |
4543 | ||
128ea8ab | 4544 | /* |
4545 | * Encode EVPN prefix in Update (MP_REACH) | |
4546 | */ | |
d62a17ae | 4547 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4548 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4549 | uint32_t num_labels, struct attr *attr, |
4550 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4551 | { |
4552 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4553 | int len, ipa_len = 0; |
d62a17ae | 4554 | |
4555 | if (addpath_encode) | |
4556 | stream_putl(s, addpath_tx_id); | |
4557 | ||
4558 | /* Route type */ | |
4559 | stream_putc(s, evp->prefix.route_type); | |
4560 | ||
4561 | switch (evp->prefix.route_type) { | |
4562 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4563 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4564 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4565 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4566 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4567 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4568 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4569 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4570 | len += 3; | |
4571 | stream_putc(s, len); | |
996c9314 | 4572 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4573 | if (attr) |
4574 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4575 | else | |
4576 | stream_put(s, 0, 10); | |
3714a385 | 4577 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4578 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4579 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4580 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4581 | if (ipa_len) /* IP */ | |
4582 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4583 | ipa_len); | |
b57ba6d2 MK |
4584 | /* 1st label is the L2 VNI */ |
4585 | stream_put(s, label, BGP_LABEL_BYTES); | |
4586 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4587 | if (ipa_len && num_labels > 1) | |
996c9314 | 4588 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4589 | break; |
4590 | ||
4591 | case BGP_EVPN_IMET_ROUTE: | |
4592 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4593 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4594 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4595 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4596 | /* Originating Router's IP Addr */ | |
3714a385 | 4597 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4598 | break; |
4599 | ||
50f74cf1 | 4600 | case BGP_EVPN_ES_ROUTE: |
4601 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4602 | stream_put(s, prd->val, 8); /* RD */ | |
4603 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4604 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4605 | /* VTEP IP */ |
4606 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4607 | break; |
4608 | ||
d62a17ae | 4609 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4610 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4611 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4612 | break; |
4613 | ||
4614 | default: | |
4615 | break; | |
4616 | } | |
4617 | } | |
4618 | ||
4619 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4620 | struct bgp_nlri *packet, int withdraw) | |
4621 | { | |
d7c0a89a QY |
4622 | uint8_t *pnt; |
4623 | uint8_t *lim; | |
d62a17ae | 4624 | afi_t afi; |
4625 | safi_t safi; | |
d7c0a89a | 4626 | uint32_t addpath_id; |
d62a17ae | 4627 | int addpath_encoded; |
4628 | int psize = 0; | |
d7c0a89a | 4629 | uint8_t rtype; |
d62a17ae | 4630 | struct prefix p; |
4631 | ||
d62a17ae | 4632 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4633 | pnt = packet->nlri; | |
4634 | lim = pnt + packet->length; | |
4635 | afi = packet->afi; | |
4636 | safi = packet->safi; | |
4637 | addpath_id = 0; | |
4638 | ||
4639 | addpath_encoded = | |
4640 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4641 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4642 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4643 | ||
4644 | for (; pnt < lim; pnt += psize) { | |
4645 | /* Clear prefix structure. */ | |
4646 | memset(&p, 0, sizeof(struct prefix)); | |
4647 | ||
4648 | /* Deal with path-id if AddPath is supported. */ | |
4649 | if (addpath_encoded) { | |
4650 | /* When packet overflow occurs return immediately. */ | |
4651 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4652 | return -1; | |
4653 | ||
4654 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4655 | pnt += BGP_ADDPATH_ID_LEN; | |
4656 | } | |
4657 | ||
4658 | /* All EVPN NLRI types start with type and length. */ | |
4659 | if (pnt + 2 > lim) | |
4660 | return -1; | |
4661 | ||
4662 | rtype = *pnt++; | |
3f54c705 | 4663 | psize = *pnt++; |
d62a17ae | 4664 | |
4665 | /* When packet overflow occur return immediately. */ | |
4666 | if (pnt + psize > lim) | |
4667 | return -1; | |
4668 | ||
4669 | switch (rtype) { | |
4670 | case BGP_EVPN_MAC_IP_ROUTE: | |
4671 | if (process_type2_route(peer, afi, safi, | |
4672 | withdraw ? NULL : attr, pnt, | |
4673 | psize, addpath_id)) { | |
af4c2728 | 4674 | flog_err( |
e50f7cfd | 4675 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4676 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4677 | peer->bgp->vrf_id, peer->host, psize); | |
4678 | return -1; | |
4679 | } | |
4680 | break; | |
4681 | ||
4682 | case BGP_EVPN_IMET_ROUTE: | |
4683 | if (process_type3_route(peer, afi, safi, | |
4684 | withdraw ? NULL : attr, pnt, | |
4685 | psize, addpath_id)) { | |
af4c2728 | 4686 | flog_err( |
e50f7cfd | 4687 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4688 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4689 | peer->bgp->vrf_id, peer->host, psize); | |
4690 | return -1; | |
4691 | } | |
4692 | break; | |
4693 | ||
50f74cf1 | 4694 | case BGP_EVPN_ES_ROUTE: |
4695 | if (process_type4_route(peer, afi, safi, | |
4696 | withdraw ? NULL : attr, pnt, | |
4697 | psize, addpath_id)) { | |
af4c2728 | 4698 | flog_err( |
e50f7cfd | 4699 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4700 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4701 | peer->bgp->vrf_id, peer->host, psize); | |
4702 | return -1; | |
4703 | } | |
4704 | break; | |
4705 | ||
d62a17ae | 4706 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4707 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4708 | psize, addpath_id, withdraw)) { | |
af4c2728 | 4709 | flog_err( |
e50f7cfd | 4710 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4711 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4712 | peer->bgp->vrf_id, peer->host, psize); | |
4713 | return -1; | |
4714 | } | |
4715 | break; | |
4716 | ||
4717 | default: | |
4718 | break; | |
4719 | } | |
4720 | } | |
4721 | ||
4722 | /* Packet length consistency check. */ | |
4723 | if (pnt != lim) | |
4724 | return -1; | |
4725 | ||
4726 | return 0; | |
128ea8ab | 4727 | } |
4728 | ||
10ebe1ab MK |
4729 | /* |
4730 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4731 | * The mapping will be used during route processing. | |
4732 | * bgp_def: default bgp instance | |
4733 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4734 | */ | |
4735 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4736 | { | |
4737 | int i = 0; | |
4738 | struct ecommunity_val *eval = NULL; | |
4739 | struct listnode *node = NULL, *nnode = NULL; | |
4740 | struct ecommunity *ecom = NULL; | |
4741 | ||
4742 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4743 | for (i = 0; i < ecom->size; i++) { | |
4744 | eval = (struct ecommunity_val *)(ecom->val | |
4745 | + (i | |
4746 | * ECOMMUNITY_SIZE)); | |
4747 | map_vrf_to_rt(bgp_vrf, eval); | |
4748 | } | |
4749 | } | |
4750 | } | |
4751 | ||
4752 | /* | |
4753 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4754 | */ | |
4755 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4756 | { | |
4757 | int i; | |
4758 | struct ecommunity_val *eval; | |
4759 | struct listnode *node, *nnode; | |
4760 | struct ecommunity *ecom; | |
4761 | ||
4762 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4763 | for (i = 0; i < ecom->size; i++) { | |
4764 | struct vrf_irt_node *irt; | |
4765 | struct ecommunity_val eval_tmp; | |
4766 | ||
4767 | eval = (struct ecommunity_val *)(ecom->val | |
4768 | + (i | |
4769 | * ECOMMUNITY_SIZE)); | |
4770 | /* If using "automatic" RT, we only care about the | |
4771 | * local-admin sub-field. | |
4772 | * This is to facilitate using VNI as the RT for EBGP | |
4773 | * peering too. | |
4774 | */ | |
4775 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4776 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4777 | BGP_VRF_IMPORT_RT_CFGD)) | |
4778 | mask_ecom_global_admin(&eval_tmp, eval); | |
4779 | ||
4780 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4781 | if (irt) | |
4782 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4783 | } | |
4784 | } | |
4785 | } | |
4786 | ||
4787 | ||
128ea8ab | 4788 | /* |
4789 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4790 | * The mapping will be used during route processing. | |
4791 | */ | |
d62a17ae | 4792 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4793 | { |
d62a17ae | 4794 | int i; |
4795 | struct ecommunity_val *eval; | |
4796 | struct listnode *node, *nnode; | |
4797 | struct ecommunity *ecom; | |
128ea8ab | 4798 | |
d62a17ae | 4799 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4800 | for (i = 0; i < ecom->size; i++) { | |
4801 | eval = (struct ecommunity_val *)(ecom->val | |
4802 | + (i | |
4803 | * ECOMMUNITY_SIZE)); | |
4804 | map_vni_to_rt(bgp, vpn, eval); | |
4805 | } | |
4806 | } | |
128ea8ab | 4807 | } |
4808 | ||
4809 | /* | |
4810 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4811 | */ | |
d62a17ae | 4812 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4813 | { |
d62a17ae | 4814 | int i; |
4815 | struct ecommunity_val *eval; | |
4816 | struct listnode *node, *nnode; | |
4817 | struct ecommunity *ecom; | |
128ea8ab | 4818 | |
d62a17ae | 4819 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4820 | for (i = 0; i < ecom->size; i++) { | |
4821 | struct irt_node *irt; | |
4822 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4823 | |
d62a17ae | 4824 | eval = (struct ecommunity_val *)(ecom->val |
4825 | + (i | |
4826 | * ECOMMUNITY_SIZE)); | |
4827 | /* If using "automatic" RT, we only care about the | |
4828 | * local-admin sub-field. | |
4829 | * This is to facilitate using VNI as the RT for EBGP | |
4830 | * peering too. | |
4831 | */ | |
4832 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4833 | if (!is_import_rt_configured(vpn)) | |
4834 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4835 | |
d62a17ae | 4836 | irt = lookup_import_rt(bgp, &eval_tmp); |
4837 | if (irt) | |
4838 | unmap_vni_from_rt(bgp, vpn, irt); | |
4839 | } | |
4840 | } | |
128ea8ab | 4841 | } |
4842 | ||
4843 | /* | |
4844 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4845 | * The mapping will be used during route processing. | |
4846 | */ | |
d62a17ae | 4847 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4848 | { |
c581d8b0 | 4849 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4850 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4851 | |
d62a17ae | 4852 | /* Map RT to VNI */ |
4853 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4854 | } |
4855 | ||
4856 | /* | |
4857 | * Derive Export RT automatically for VNI. | |
4858 | */ | |
d62a17ae | 4859 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4860 | { |
c581d8b0 | 4861 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4862 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4863 | } |
4864 | ||
676f83b9 | 4865 | /* |
4866 | * Derive RD automatically for VNI using passed information - it | |
4867 | * is of the form RouterId:unique-id-for-vni. | |
4868 | */ | |
4869 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4870 | { | |
92708db6 | 4871 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4872 | } |
4873 | ||
128ea8ab | 4874 | /* |
4875 | * Derive RD automatically for VNI using passed information - it | |
4876 | * is of the form RouterId:unique-id-for-vni. | |
4877 | */ | |
d62a17ae | 4878 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4879 | { |
d62a17ae | 4880 | char buf[100]; |
128ea8ab | 4881 | |
d62a17ae | 4882 | vpn->prd.family = AF_UNSPEC; |
4883 | vpn->prd.prefixlen = 64; | |
4884 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4885 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4886 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4887 | } |
4888 | ||
7df407ed CS |
4889 | /* |
4890 | * Lookup L3-VNI | |
4891 | */ | |
4892 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4893 | { | |
4894 | struct list *inst = bm->bgp; | |
4895 | struct listnode *node; | |
4896 | struct bgp *bgp_vrf; | |
4897 | ||
4898 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4899 | if (bgp_vrf->l3vni == vni) | |
4900 | return true; | |
4901 | } | |
4902 | ||
4903 | return false; | |
4904 | } | |
4905 | ||
128ea8ab | 4906 | /* |
4907 | * Lookup VNI. | |
4908 | */ | |
d62a17ae | 4909 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4910 | { |
d62a17ae | 4911 | struct bgpevpn *vpn; |
4912 | struct bgpevpn tmp; | |
128ea8ab | 4913 | |
d62a17ae | 4914 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4915 | tmp.vni = vni; | |
4916 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4917 | return vpn; | |
128ea8ab | 4918 | } |
4919 | ||
4920 | /* | |
4921 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4922 | */ | |
d62a17ae | 4923 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4924 | struct in_addr originator_ip, |
4925 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4926 | { |
d62a17ae | 4927 | struct bgpevpn *vpn; |
128ea8ab | 4928 | |
d62a17ae | 4929 | if (!bgp) |
4930 | return NULL; | |
128ea8ab | 4931 | |
d62a17ae | 4932 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4933 | if (!vpn) | |
4934 | return NULL; | |
128ea8ab | 4935 | |
d62a17ae | 4936 | /* Set values - RD and RT set to defaults. */ |
4937 | vpn->vni = vni; | |
4938 | vpn->originator_ip = originator_ip; | |
29c53922 | 4939 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4940 | |
d62a17ae | 4941 | /* Initialize route-target import and export lists */ |
4942 | vpn->import_rtl = list_new(); | |
4943 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4944 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4945 | vpn->export_rtl = list_new(); |
4946 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4947 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4948 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4949 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4950 | |
d62a17ae | 4951 | /* Initialize EVPN route table. */ |
960035b2 | 4952 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4953 | |
d62a17ae | 4954 | /* Add to hash */ |
4955 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4956 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4957 | return NULL; | |
4958 | } | |
6a8657d0 MK |
4959 | |
4960 | /* add to l2vni list on corresponding vrf */ | |
4961 | bgpevpn_link_to_l3vni(vpn); | |
4962 | ||
d62a17ae | 4963 | QOBJ_REG(vpn, bgpevpn); |
4964 | return vpn; | |
128ea8ab | 4965 | } |
4966 | ||
4967 | /* | |
4968 | * Free a given VPN - called in multiple scenarios such as zebra | |
4969 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4970 | * This just frees appropriate memory, caller should have taken other | |
4971 | * needed actions. | |
4972 | */ | |
d62a17ae | 4973 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4974 | { |
6a8657d0 | 4975 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4976 | bgp_table_unlock(vpn->route_table); |
4977 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
4978 | list_delete(&vpn->import_rtl); |
4979 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 4980 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4981 | hash_release(bgp->vnihash, vpn); |
4982 | QOBJ_UNREG(vpn); | |
4983 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4984 | } |
4985 | ||
4986 | /* | |
50f74cf1 | 4987 | * Lookup local ES. |
4988 | */ | |
4989 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
4990 | { | |
4991 | struct evpnes *es; | |
4992 | struct evpnes tmp; | |
4993 | ||
4994 | memset(&tmp, 0, sizeof(struct evpnes)); | |
4995 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
4996 | es = hash_lookup(bgp->esihash, &tmp); | |
4997 | return es; | |
4998 | } | |
4999 | ||
5000 | /* | |
5001 | * Create a new local es - invoked upon zebra notification. | |
5002 | */ | |
5003 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5004 | esi_t *esi, | |
5005 | struct ipaddr *originator_ip) | |
5006 | { | |
5007 | char buf[100]; | |
5008 | struct evpnes *es; | |
5009 | ||
5010 | if (!bgp) | |
5011 | return NULL; | |
5012 | ||
5013 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5014 | if (!es) | |
5015 | return NULL; | |
5016 | ||
5017 | /* set the ESI and originator_ip */ | |
5018 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5019 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5020 | ||
5021 | /* Initialise the VTEP list */ | |
5022 | es->vtep_list = list_new(); | |
5023 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5024 | ||
5025 | /* auto derive RD for this es */ | |
5026 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5027 | es->prd.family = AF_UNSPEC; | |
5028 | es->prd.prefixlen = 64; | |
5029 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5030 | (void)str2prefix_rd(buf, &es->prd); | |
5031 | ||
5032 | /* Initialize the ES route table */ | |
5033 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5034 | ||
5035 | /* Add to hash */ | |
5036 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5037 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5038 | return NULL; | |
5039 | } | |
5040 | ||
5041 | QOBJ_REG(es, evpnes); | |
5042 | return es; | |
5043 | } | |
5044 | ||
5045 | /* | |
5046 | * Free a given ES - | |
5047 | * This just frees appropriate memory, caller should have taken other | |
5048 | * needed actions. | |
5049 | */ | |
5050 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5051 | { | |
6a154c88 | 5052 | list_delete(&es->vtep_list); |
50f74cf1 | 5053 | bgp_table_unlock(es->route_table); |
5054 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5055 | hash_release(bgp->esihash, es); | |
5056 | QOBJ_UNREG(es); | |
5057 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5058 | } | |
5059 | ||
5060 | /* | |
5061 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5062 | */ |
d62a17ae | 5063 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5064 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5065 | { |
40381db7 | 5066 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5067 | } |
5068 | ||
5069 | /* | |
50f74cf1 | 5070 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5071 | */ |
d62a17ae | 5072 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5073 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5074 | { |
40381db7 | 5075 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5076 | } |
5077 | ||
db0e1937 MK |
5078 | /* filter routes which have martian next hops */ |
5079 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5080 | { | |
0291c246 MK |
5081 | afi_t afi; |
5082 | safi_t safi; | |
5083 | struct bgp_node *rd_rn, *rn; | |
5084 | struct bgp_table *table; | |
40381db7 | 5085 | struct bgp_path_info *pi; |
db0e1937 MK |
5086 | |
5087 | afi = AFI_L2VPN; | |
5088 | safi = SAFI_EVPN; | |
5089 | ||
5090 | /* Walk entire global routing table and evaluate routes which could be | |
5091 | * imported into this VPN. Note that we cannot just look at the routes | |
5092 | * for the VNI's RD - | |
5093 | * remote routes applicable for this VNI could have any RD. | |
5094 | */ | |
5095 | /* EVPN routes are a 2-level table. */ | |
5096 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5097 | rd_rn = bgp_route_next(rd_rn)) { | |
5098 | table = (struct bgp_table *)(rd_rn->info); | |
5099 | if (!table) | |
5100 | continue; | |
5101 | ||
5102 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5103 | ||
40381db7 | 5104 | for (pi = rn->info; pi; pi = pi->next) { |
db0e1937 MK |
5105 | |
5106 | /* Consider "valid" remote routes applicable for | |
5107 | * this VNI. */ | |
40381db7 DS |
5108 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5109 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 MK |
5110 | continue; |
5111 | ||
40381db7 | 5112 | if (bgp_nexthop_self(bgp, pi->attr->nexthop)) { |
db0e1937 MK |
5113 | |
5114 | char attr_str[BUFSIZ]; | |
5115 | char pbuf[PREFIX_STRLEN]; | |
5116 | ||
40381db7 | 5117 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5118 | BUFSIZ); |
5119 | ||
40381db7 | 5120 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5121 | NULL, 1)) |
5122 | zlog_debug( | |
b682f6de | 5123 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5124 | bgp->vrf_id, |
5125 | prefix2str( | |
60466a63 | 5126 | &rn->p, pbuf, |
db0e1937 MK |
5127 | sizeof(pbuf)), |
5128 | attr_str); | |
5129 | ||
5130 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5131 | &rn->p, pi); |
db0e1937 | 5132 | |
40381db7 | 5133 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5134 | safi); |
db0e1937 | 5135 | } |
db0e1937 MK |
5136 | } |
5137 | } | |
5138 | } | |
5139 | ||
5140 | return 0; | |
5141 | } | |
5142 | ||
128ea8ab | 5143 | /* |
5144 | * Handle del of a local MACIP. | |
5145 | */ | |
d62a17ae | 5146 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5147 | struct ipaddr *ip) | |
128ea8ab | 5148 | { |
d62a17ae | 5149 | struct bgpevpn *vpn; |
5150 | struct prefix_evpn p; | |
128ea8ab | 5151 | |
d62a17ae | 5152 | /* Lookup VNI hash - should exist. */ |
5153 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5154 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5155 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5156 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5157 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5158 | return -1; | |
5159 | } | |
128ea8ab | 5160 | |
d62a17ae | 5161 | /* Remove EVPN type-2 route and schedule for processing. */ |
5162 | build_evpn_type2_prefix(&p, mac, ip); | |
5163 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5164 | |
d62a17ae | 5165 | return 0; |
128ea8ab | 5166 | } |
5167 | ||
5168 | /* | |
5169 | * Handle add of a local MACIP. | |
5170 | */ | |
d62a17ae | 5171 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5172 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5173 | { |
d62a17ae | 5174 | struct bgpevpn *vpn; |
5175 | struct prefix_evpn p; | |
128ea8ab | 5176 | |
d62a17ae | 5177 | /* Lookup VNI hash - should exist. */ |
5178 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5179 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5180 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5181 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5182 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5183 | return -1; | |
5184 | } | |
128ea8ab | 5185 | |
d62a17ae | 5186 | /* Create EVPN type-2 route and schedule for processing. */ |
5187 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5188 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5189 | char buf[ETHER_ADDR_STRLEN]; |
5190 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5191 | |
af4c2728 | 5192 | flog_err( |
e50f7cfd | 5193 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5194 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5195 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5196 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5197 | ? "sticky gateway" | |
5198 | : "", | |
d62a17ae | 5199 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5200 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5201 | return -1; |
5202 | } | |
128ea8ab | 5203 | |
d62a17ae | 5204 | return 0; |
128ea8ab | 5205 | } |
5206 | ||
6a8657d0 MK |
5207 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5208 | struct bgp *bgp_vrf) | |
5209 | { | |
0a1a07cb | 5210 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
6a8657d0 MK |
5211 | struct bgp *bgp_def = NULL; |
5212 | ||
5213 | bgp_def = bgp_get_default(); | |
5214 | assert(bgp_def); | |
5215 | ||
6a8657d0 MK |
5216 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5217 | bgpevpn_link_to_l3vni(vpn); | |
5218 | } | |
5219 | ||
996c9314 LB |
5220 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5221 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5222 | { |
5223 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5224 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5225 | struct listnode *node = NULL; |
5226 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5227 | as_t as = 0; |
5228 | ||
d846168d | 5229 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5230 | * auto-creatio |
5231 | */ | |
fe1dc5a3 MK |
5232 | bgp_def = bgp_get_default(); |
5233 | if (!bgp_def) { | |
af4c2728 | 5234 | flog_err( |
e50f7cfd | 5235 | EC_BGP_NO_DFLT, |
996c9314 LB |
5236 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", |
5237 | l3vni); | |
fe1dc5a3 MK |
5238 | return -1; |
5239 | } | |
5240 | as = bgp_def->as; | |
5241 | ||
5242 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5243 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5244 | if (!bgp_vrf) { |
5245 | ||
5246 | int ret = 0; | |
5247 | ||
5248 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5249 | BGP_INSTANCE_TYPE_VRF); | |
5250 | switch (ret) { | |
5251 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5252 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5253 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5254 | return -1; |
5255 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5256 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5257 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5258 | return -1; |
5259 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5260 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5261 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5262 | return -1; |
5263 | } | |
5264 | ||
5265 | /* mark as auto created */ | |
5266 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5267 | } | |
5268 | ||
5269 | /* associate with l3vni */ | |
5270 | bgp_vrf->l3vni = l3vni; | |
5271 | ||
5272 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5273 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5274 | ||
b67a60d2 | 5275 | /* set the originator ip */ |
5276 | bgp_vrf->originator_ip = originator_ip; | |
5277 | ||
c48d9f5f MK |
5278 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5279 | if (filter) | |
5280 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5281 | ||
c581d8b0 MK |
5282 | /* auto derive RD/RT */ |
5283 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5284 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5285 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5286 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5287 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5288 | |
6a8657d0 MK |
5289 | /* link all corresponding l2vnis */ |
5290 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5291 | (void (*)(struct hash_backet *, |
5292 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5293 | bgp_vrf); |
5294 | ||
c48d9f5f MK |
5295 | /* Only update all corresponding type-2 routes if we are advertising two |
5296 | * labels along with type-2 routes | |
5297 | */ | |
5298 | if (!filter) | |
5299 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5300 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5301 | |
06d2e8f3 MK |
5302 | /* advertise type-5 routes if needed */ |
5303 | update_advertise_vrf_routes(bgp_vrf); | |
5304 | ||
5ba238b7 MK |
5305 | /* install all remote routes belonging to this l3vni into correspondng |
5306 | * vrf */ | |
5307 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5308 | |
5309 | return 0; | |
5310 | } | |
5311 | ||
996c9314 | 5312 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5313 | { |
5314 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5315 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5316 | struct listnode *node = NULL; | |
18abc1eb | 5317 | struct listnode *next = NULL; |
f1f8b53c | 5318 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5319 | |
5320 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5321 | if (!bgp_vrf) { | |
af4c2728 | 5322 | flog_err( |
e50f7cfd | 5323 | EC_BGP_NO_DFLT, |
996c9314 LB |
5324 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5325 | l3vni); | |
fe1dc5a3 MK |
5326 | return -1; |
5327 | } | |
5328 | ||
f1f8b53c MK |
5329 | bgp_def = bgp_get_default(); |
5330 | if (!bgp_def) { | |
af4c2728 | 5331 | flog_err( |
e50f7cfd | 5332 | EC_BGP_NO_DFLT, |
996c9314 LB |
5333 | "Cannot process L3VNI %u Del - Could not find default BGP instance", |
5334 | l3vni); | |
f1f8b53c MK |
5335 | return -1; |
5336 | } | |
5337 | ||
d846168d | 5338 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5339 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5340 | * routes. This will uninstalling the routes from zebra and decremnt the |
5341 | * bgp info count. | |
523cafc4 | 5342 | */ |
d846168d | 5343 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5344 | |
06d2e8f3 MK |
5345 | /* delete/withdraw all type-5 routes */ |
5346 | delete_withdraw_vrf_routes(bgp_vrf); | |
5347 | ||
fe1dc5a3 MK |
5348 | /* remove the l3vni from vrf instance */ |
5349 | bgp_vrf->l3vni = 0; | |
5350 | ||
5351 | /* remove the Rmac from the BGP vrf */ | |
5352 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5353 | ||
c581d8b0 | 5354 | /* delete RD/RT */ |
1525e99f | 5355 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5356 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5357 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5358 | } |
1525e99f | 5359 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5360 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5361 | } |
fe1dc5a3 | 5362 | |
f1f8b53c | 5363 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5364 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5365 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5366 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5367 | update_routes_for_vni(bgp_def, vpn); | |
5368 | } | |
5369 | } | |
fe1dc5a3 | 5370 | |
18abc1eb | 5371 | /* If any L2VNIs point to this instance, unlink them. */ |
5372 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5373 | bgpevpn_unlink_from_l3vni(vpn); | |
5374 | ||
fe1dc5a3 MK |
5375 | /* Delete the instance if it was autocreated */ |
5376 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5377 | bgp_delete(bgp_vrf); | |
5378 | ||
5379 | return 0; | |
5380 | } | |
5381 | ||
128ea8ab | 5382 | /* |
5383 | * Handle del of a local VNI. | |
5384 | */ | |
d62a17ae | 5385 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5386 | { |
d62a17ae | 5387 | struct bgpevpn *vpn; |
128ea8ab | 5388 | |
d62a17ae | 5389 | /* Locate VNI hash */ |
5390 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5391 | if (!vpn) { | |
1e00627b | 5392 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5393 | flog_warn( |
e50f7cfd | 5394 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5395 | "%u: VNI hash entry for VNI %u not found at DEL", |
5396 | bgp->vrf_id, vni); | |
d62a17ae | 5397 | return 0; |
5398 | } | |
128ea8ab | 5399 | |
d62a17ae | 5400 | /* Remove all local EVPN routes and schedule for processing (to |
5401 | * withdraw from peers). | |
5402 | */ | |
5403 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5404 | |
db0e1937 MK |
5405 | /* |
5406 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5407 | */ | |
5408 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5409 | ||
d62a17ae | 5410 | /* Clear "live" flag and see if hash needs to be freed. */ |
5411 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5412 | if (!is_vni_configured(vpn)) | |
5413 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5414 | |
d62a17ae | 5415 | return 0; |
128ea8ab | 5416 | } |
5417 | ||
5418 | /* | |
d1911c26 | 5419 | * Handle add (or update) of a local VNI. The VNI changes we care |
5420 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5421 | */ |
d62a17ae | 5422 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5423 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5424 | { |
5425 | struct bgpevpn *vpn; | |
5426 | struct prefix_evpn p; | |
5427 | ||
d62a17ae | 5428 | /* Lookup VNI. If present and no change, exit. */ |
5429 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5430 | if (vpn) { |
29c53922 | 5431 | |
d1911c26 | 5432 | if (is_vni_live(vpn) |
5433 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5434 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5435 | /* Probably some other param has changed that we don't | |
5436 | * care about. */ | |
5437 | return 0; | |
5438 | ||
5439 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5440 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5441 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5442 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5443 | bgpevpn_link_to_l3vni(vpn); |
5444 | } | |
29c53922 | 5445 | |
d1911c26 | 5446 | /* If tunnel endpoint IP has changed, update (and delete prior |
5447 | * type-3 route, if needed.) | |
5448 | */ | |
5449 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5450 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5451 | |
d1911c26 | 5452 | /* Update all routes with new endpoint IP and/or export RT |
5453 | * for VRFs | |
5454 | */ | |
5455 | if (is_vni_live(vpn)) | |
5456 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5457 | } |
5458 | ||
5459 | /* Create or update as appropriate. */ | |
5460 | if (!vpn) { | |
29c53922 | 5461 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5462 | if (!vpn) { |
af4c2728 | 5463 | flog_err( |
e50f7cfd | 5464 | EC_BGP_VNI, |
d62a17ae | 5465 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5466 | bgp->vrf_id, vni); | |
5467 | return -1; | |
5468 | } | |
5469 | } | |
5470 | ||
db0e1937 | 5471 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5472 | if (is_vni_live(vpn)) |
5473 | return 0; | |
5474 | ||
d62a17ae | 5475 | /* Mark as "live" */ |
5476 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5477 | ||
db0e1937 MK |
5478 | /* tunnel is now active, add tunnel-ip to db */ |
5479 | bgp_tip_add(bgp, &originator_ip); | |
5480 | ||
5481 | /* filter routes as nexthop database has changed */ | |
5482 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5483 | ||
d62a17ae | 5484 | /* Create EVPN type-3 route and schedule for processing. */ |
5485 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
f07e1c99 | 5486 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { |
e50f7cfd | 5487 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5488 | "%u: Type3 route creation failure for VNI %u", |
5489 | bgp->vrf_id, vni); | |
d62a17ae | 5490 | return -1; |
5491 | } | |
5492 | ||
5493 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5494 | * VNI, | |
5495 | * install them. | |
5496 | */ | |
5497 | install_routes_for_vni(bgp, vpn); | |
5498 | ||
d7d97010 MK |
5499 | /* If we are advertising gateway mac-ip |
5500 | It needs to be conveyed again to zebra */ | |
5501 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5502 | ||
d62a17ae | 5503 | return 0; |
b18825eb | 5504 | } |
14c1a7bf | 5505 | |
50f74cf1 | 5506 | /* |
5507 | * bgp_evpn_local_es_del | |
5508 | */ | |
5509 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5510 | esi_t *esi, | |
5511 | struct ipaddr *originator_ip) | |
5512 | { | |
5513 | char buf[ESI_STR_LEN]; | |
5514 | struct evpnes *es = NULL; | |
5515 | ||
5516 | if (!bgp->esihash) { | |
e50f7cfd | 5517 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5518 | bgp->vrf_id); |
50f74cf1 | 5519 | return -1; |
5520 | } | |
5521 | ||
5522 | /* Lookup ESI hash - should exist. */ | |
5523 | es = bgp_evpn_lookup_es(bgp, esi); | |
5524 | if (!es) { | |
e50f7cfd | 5525 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5526 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5527 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5528 | return -1; |
5529 | } | |
5530 | ||
5531 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5532 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5533 | */ |
5534 | delete_routes_for_es(bgp, es); | |
5535 | ||
5536 | /* free the hash entry */ | |
5537 | bgp_evpn_es_free(bgp, es); | |
5538 | ||
5539 | return 0; | |
5540 | } | |
5541 | ||
5542 | /* | |
5543 | * bgp_evpn_local_es_add | |
5544 | */ | |
5545 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5546 | esi_t *esi, | |
5547 | struct ipaddr *originator_ip) | |
5548 | { | |
5549 | char buf[ESI_STR_LEN]; | |
5550 | struct evpnes *es = NULL; | |
5551 | struct prefix_evpn p; | |
5552 | ||
5553 | if (!bgp->esihash) { | |
e50f7cfd | 5554 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5555 | bgp->vrf_id); |
50f74cf1 | 5556 | return -1; |
5557 | } | |
5558 | ||
5559 | /* create the new es */ | |
2bb9eff4 | 5560 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5561 | if (!es) { |
5562 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5563 | if (!es) { | |
af4c2728 | 5564 | flog_err( |
e50f7cfd | 5565 | EC_BGP_ES_CREATE, |
50f74cf1 | 5566 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5567 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5568 | return -1; | |
5569 | } | |
5570 | } | |
5571 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5572 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5573 | ||
5574 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5575 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5576 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5577 | "%u: Type4 route creation failure for ESI %s", |
5578 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5579 | return -1; |
5580 | } | |
5581 | ||
5582 | /* import all remote ES routes in th ES table */ | |
5583 | install_routes_for_es(bgp, es); | |
5584 | ||
5585 | return 0; | |
5586 | } | |
5587 | ||
7724c0a1 | 5588 | /* |
5589 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5590 | * EVPN routes from peers. | |
5591 | */ | |
d62a17ae | 5592 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5593 | { |
9d303b37 DL |
5594 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5595 | void *))cleanup_vni_on_disable, | |
5596 | bgp); | |
7724c0a1 | 5597 | } |
5598 | ||
14c1a7bf | 5599 | /* |
5600 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5601 | * BGP instance (default) is being freed. | |
5602 | */ | |
d62a17ae | 5603 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5604 | { |
1525e99f DS |
5605 | hash_iterate(bgp->vnihash, |
5606 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5607 | bgp); | |
5608 | ||
5609 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5610 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5611 | |
5612 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5613 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5614 | |
5615 | hash_free(bgp->vnihash); | |
d62a17ae | 5616 | bgp->vnihash = NULL; |
50f74cf1 | 5617 | if (bgp->esihash) |
5618 | hash_free(bgp->esihash); | |
5619 | bgp->esihash = NULL; | |
1525e99f | 5620 | |
6a154c88 DL |
5621 | list_delete(&bgp->vrf_import_rtl); |
5622 | list_delete(&bgp->vrf_export_rtl); | |
5623 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5624 | } |
5625 | ||
5626 | /* | |
5627 | * Initialization for EVPN | |
5628 | * Create | |
5629 | * VNI hash table | |
5630 | * hash for RT to VNI | |
14c1a7bf | 5631 | */ |
d62a17ae | 5632 | void bgp_evpn_init(struct bgp *bgp) |
5633 | { | |
5634 | bgp->vnihash = | |
5635 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5636 | bgp->esihash = |
5637 | hash_create(esi_hash_keymake, esi_cmp, | |
5638 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5639 | bgp->import_rt_hash = |
5640 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5641 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5642 | bgp->vrf_import_rt_hash = |
5643 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5644 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5645 | bgp->vrf_import_rtl = list_new(); |
5646 | bgp->vrf_import_rtl->cmp = | |
5647 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5648 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5649 | bgp->vrf_export_rtl = list_new(); |
5650 | bgp->vrf_export_rtl->cmp = | |
5651 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5652 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5653 | bgp->l2vnis = list_new(); |
996c9314 | 5654 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5655 | } |
10ebe1ab MK |
5656 | |
5657 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5658 | { | |
5659 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5660 | } |