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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
46 | #include "bgpd/bgp_aspath.h" | |
d7d97010 | 47 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 48 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 49 | |
50 | /* | |
51 | * Definitions and external declarations. | |
52 | */ | |
53 | extern struct zclient *zclient; | |
54 | ||
55 | DEFINE_QOBJ_TYPE(bgpevpn) | |
56 | ||
57 | ||
58 | /* | |
59 | * Static function declarations | |
60 | */ | |
d62a17ae | 61 | static void delete_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
62 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
63 | struct bgp_info **ri); | |
64 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); | |
14c1a7bf | 65 | |
66 | /* | |
67 | * Private functions. | |
68 | */ | |
69 | ||
70 | /* | |
71 | * Make vni hash key. | |
72 | */ | |
d62a17ae | 73 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 74 | { |
d62a17ae | 75 | struct bgpevpn *vpn = p; |
76 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 77 | } |
78 | ||
79 | /* | |
80 | * Comparison function for vni hash | |
81 | */ | |
d62a17ae | 82 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 83 | { |
d62a17ae | 84 | const struct bgpevpn *vpn1 = p1; |
85 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 86 | |
d62a17ae | 87 | if (!vpn1 && !vpn2) |
88 | return 1; | |
89 | if (!vpn1 || !vpn2) | |
90 | return 0; | |
91 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 92 | } |
93 | ||
10ebe1ab MK |
94 | /* |
95 | * Make vrf import route target hash key. | |
96 | */ | |
97 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
98 | { | |
99 | struct vrf_irt_node *irt = p; | |
100 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
101 | |
102 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
103 | } |
104 | ||
105 | /* | |
106 | * Comparison function for vrf import rt hash | |
107 | */ | |
108 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
109 | { | |
110 | const struct vrf_irt_node *irt1 = p1; | |
111 | const struct vrf_irt_node *irt2 = p2; | |
112 | ||
113 | if (irt1 == NULL && irt2 == NULL) | |
114 | return 1; | |
115 | ||
116 | if (irt1 == NULL || irt2 == NULL) | |
117 | return 0; | |
118 | ||
119 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
120 | } | |
121 | ||
122 | /* | |
123 | * Create a new vrf import_rt in default instance | |
124 | */ | |
125 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
126 | { | |
127 | struct bgp *bgp_def = NULL; | |
128 | struct vrf_irt_node *irt; | |
129 | ||
130 | bgp_def = bgp_get_default(); | |
131 | if (!bgp_def) { | |
132 | zlog_err("vrf import rt new - def instance not created yet"); | |
133 | return NULL; | |
134 | } | |
135 | ||
136 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
137 | sizeof(struct vrf_irt_node)); | |
138 | if (!irt) | |
139 | return NULL; | |
140 | ||
141 | irt->rt = *rt; | |
142 | irt->vrfs = list_new(); | |
143 | ||
144 | /* Add to hash */ | |
145 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
146 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | return irt; | |
151 | } | |
152 | ||
153 | /* | |
154 | * Free the vrf import rt node | |
155 | */ | |
156 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
157 | { | |
158 | struct bgp *bgp_def = NULL; | |
159 | ||
160 | bgp_def = bgp_get_default(); | |
161 | if (!bgp_def) { | |
162 | zlog_err("vrf import rt free - def instance not created yet"); | |
163 | return; | |
164 | } | |
165 | ||
166 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
167 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Function to lookup Import RT node - used to map a RT to set of | |
172 | * VNIs importing routes with that RT. | |
173 | */ | |
174 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
175 | { | |
176 | struct bgp *bgp_def = NULL; | |
177 | struct vrf_irt_node *irt; | |
178 | struct vrf_irt_node tmp; | |
179 | ||
180 | bgp_def = bgp_get_default(); | |
181 | if (!bgp_def) { | |
182 | zlog_err("vrf import rt lookup - def instance not created yet"); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
187 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
188 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
189 | return irt; | |
190 | } | |
191 | ||
192 | /* | |
193 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
194 | */ | |
996c9314 | 195 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
196 | { |
197 | struct listnode *node = NULL, *nnode = NULL; | |
198 | struct bgp *tmp_bgp_vrf = NULL; | |
199 | ||
200 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
201 | if (tmp_bgp_vrf == bgp_vrf) | |
202 | return 1; | |
203 | } | |
204 | return 0; | |
205 | } | |
206 | ||
14c1a7bf | 207 | /* |
208 | * Make import route target hash key. | |
209 | */ | |
d62a17ae | 210 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 211 | { |
d62a17ae | 212 | struct irt_node *irt = p; |
213 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
214 | |
215 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 216 | } |
217 | ||
218 | /* | |
219 | * Comparison function for import rt hash | |
220 | */ | |
d62a17ae | 221 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 222 | { |
d62a17ae | 223 | const struct irt_node *irt1 = p1; |
224 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 225 | |
d62a17ae | 226 | if (irt1 == NULL && irt2 == NULL) |
227 | return 1; | |
14c1a7bf | 228 | |
d62a17ae | 229 | if (irt1 == NULL || irt2 == NULL) |
230 | return 0; | |
14c1a7bf | 231 | |
d62a17ae | 232 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 233 | } |
234 | ||
7724c0a1 | 235 | /* |
128ea8ab | 236 | * Create a new import_rt |
237 | */ | |
d62a17ae | 238 | static struct irt_node *import_rt_new(struct bgp *bgp, |
239 | struct ecommunity_val *rt) | |
128ea8ab | 240 | { |
d62a17ae | 241 | struct irt_node *irt; |
128ea8ab | 242 | |
d62a17ae | 243 | if (!bgp) |
244 | return NULL; | |
128ea8ab | 245 | |
d62a17ae | 246 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
247 | if (!irt) | |
248 | return NULL; | |
128ea8ab | 249 | |
d62a17ae | 250 | irt->rt = *rt; |
251 | irt->vnis = list_new(); | |
128ea8ab | 252 | |
d62a17ae | 253 | /* Add to hash */ |
254 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
255 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
256 | return NULL; | |
257 | } | |
128ea8ab | 258 | |
d62a17ae | 259 | return irt; |
128ea8ab | 260 | } |
261 | ||
262 | /* | |
263 | * Free the import rt node | |
7724c0a1 | 264 | */ |
d62a17ae | 265 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 266 | { |
d62a17ae | 267 | hash_release(bgp->import_rt_hash, irt); |
268 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
7724c0a1 | 269 | } |
270 | ||
14c1a7bf | 271 | /* |
128ea8ab | 272 | * Function to lookup Import RT node - used to map a RT to set of |
273 | * VNIs importing routes with that RT. | |
274 | */ | |
d62a17ae | 275 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
276 | struct ecommunity_val *rt) | |
128ea8ab | 277 | { |
d62a17ae | 278 | struct irt_node *irt; |
279 | struct irt_node tmp; | |
128ea8ab | 280 | |
d62a17ae | 281 | memset(&tmp, 0, sizeof(struct irt_node)); |
282 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
283 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
284 | return irt; | |
128ea8ab | 285 | } |
286 | ||
287 | /* | |
288 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
289 | */ | |
d62a17ae | 290 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 291 | { |
d62a17ae | 292 | struct listnode *node, *nnode; |
293 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 294 | |
d62a17ae | 295 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
296 | if (tmp_vpn == vpn) | |
297 | return 1; | |
298 | } | |
128ea8ab | 299 | |
d62a17ae | 300 | return 0; |
128ea8ab | 301 | } |
302 | ||
303 | /* | |
304 | * Compare Route Targets. | |
305 | */ | |
d62a17ae | 306 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
307 | struct ecommunity *ecom2) | |
128ea8ab | 308 | { |
d62a17ae | 309 | if (ecom1 && !ecom2) |
310 | return -1; | |
128ea8ab | 311 | |
d62a17ae | 312 | if (!ecom1 && ecom2) |
313 | return 1; | |
128ea8ab | 314 | |
d62a17ae | 315 | if (!ecom1 && !ecom2) |
316 | return 0; | |
128ea8ab | 317 | |
d62a17ae | 318 | if (ecom1->str && !ecom2->str) |
319 | return -1; | |
128ea8ab | 320 | |
d62a17ae | 321 | if (!ecom1->str && ecom2->str) |
322 | return 1; | |
128ea8ab | 323 | |
d62a17ae | 324 | if (!ecom1->str && !ecom2->str) |
325 | return 0; | |
128ea8ab | 326 | |
d62a17ae | 327 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 328 | } |
329 | ||
330 | /* | |
331 | * Mask off global-admin field of specified extended community (RT), | |
332 | * just retain the local-admin field. | |
333 | */ | |
d62a17ae | 334 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
335 | struct ecommunity_val *src) | |
128ea8ab | 336 | { |
d7c0a89a | 337 | uint8_t type; |
128ea8ab | 338 | |
d62a17ae | 339 | type = src->val[0]; |
340 | dst->val[0] = 0; | |
341 | if (type == ECOMMUNITY_ENCODE_AS) { | |
342 | dst->val[2] = dst->val[3] = 0; | |
343 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
344 | || type == ECOMMUNITY_ENCODE_IP) { | |
345 | dst->val[2] = dst->val[3] = 0; | |
346 | dst->val[4] = dst->val[5] = 0; | |
347 | } | |
128ea8ab | 348 | } |
349 | ||
10ebe1ab MK |
350 | /* |
351 | * Map one RT to specified VRF. | |
352 | * bgp_vrf = BGP vrf instance | |
353 | */ | |
996c9314 | 354 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
355 | { |
356 | struct vrf_irt_node *irt = NULL; | |
357 | struct ecommunity_val eval_tmp; | |
358 | ||
359 | /* If using "automatic" RT, | |
360 | * we only care about the local-admin sub-field. | |
361 | * This is to facilitate using L3VNI(VRF-VNI) | |
362 | * as the RT for EBGP peering too. | |
363 | */ | |
364 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 365 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
366 | mask_ecom_global_admin(&eval_tmp, eval); |
367 | ||
368 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
369 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
370 | /* Already mapped. */ | |
371 | return; | |
10ebe1ab | 372 | |
e066d6d0 | 373 | if (!irt) |
10ebe1ab | 374 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
375 | |
376 | /* Add VRF to the list for this RT. */ | |
377 | listnode_add(irt->vrfs, bgp_vrf); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Unmap specified VRF from specified RT. If there are no other | |
382 | * VRFs for this RT, then the RT hash is deleted. | |
383 | * bgp_vrf: BGP VRF specific instance | |
384 | */ | |
996c9314 | 385 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
386 | { |
387 | /* Delete VRF from list for this RT. */ | |
388 | listnode_delete(irt->vrfs, bgp_vrf); | |
389 | if (!listnode_head(irt->vrfs)) { | |
bb7a24ab | 390 | list_delete_and_null(&irt->vrfs); |
10ebe1ab MK |
391 | vrf_import_rt_free(irt); |
392 | } | |
393 | } | |
394 | ||
128ea8ab | 395 | /* |
396 | * Map one RT to specified VNI. | |
14c1a7bf | 397 | */ |
d62a17ae | 398 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
399 | struct ecommunity_val *eval) | |
128ea8ab | 400 | { |
d62a17ae | 401 | struct irt_node *irt; |
402 | struct ecommunity_val eval_tmp; | |
128ea8ab | 403 | |
d62a17ae | 404 | /* If using "automatic" RT, we only care about the local-admin |
405 | * sub-field. | |
406 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
407 | */ | |
408 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
409 | if (!is_import_rt_configured(vpn)) | |
410 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 411 | |
d62a17ae | 412 | irt = lookup_import_rt(bgp, &eval_tmp); |
413 | if (irt && irt->vnis) | |
414 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
415 | /* Already mapped. */ | |
416 | return; | |
128ea8ab | 417 | |
d62a17ae | 418 | if (!irt) { |
419 | irt = import_rt_new(bgp, &eval_tmp); | |
420 | assert(irt); | |
421 | } | |
128ea8ab | 422 | |
d62a17ae | 423 | /* Add VNI to the hash list for this RT. */ |
424 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 425 | } |
426 | ||
427 | /* | |
428 | * Unmap specified VNI from specified RT. If there are no other | |
429 | * VNIs for this RT, then the RT hash is deleted. | |
430 | */ | |
d62a17ae | 431 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
432 | struct irt_node *irt) | |
14c1a7bf | 433 | { |
d62a17ae | 434 | /* Delete VNI from hash list for this RT. */ |
435 | listnode_delete(irt->vnis, vpn); | |
436 | if (!listnode_head(irt->vnis)) { | |
acdf5e25 | 437 | list_delete_and_null(&irt->vnis); |
d62a17ae | 438 | import_rt_free(bgp, irt); |
439 | } | |
14c1a7bf | 440 | } |
441 | ||
128ea8ab | 442 | /* |
443 | * Create RT extended community automatically from passed information: | |
444 | * of the form AS:VNI. | |
445 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
446 | * the need is to get a RT value that will be unique across different | |
447 | * VNIs but the same across routers (in the same AS) for a particular | |
448 | * VNI. | |
449 | */ | |
c581d8b0 | 450 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 451 | { |
d62a17ae | 452 | struct ecommunity_val eval; |
453 | struct ecommunity *ecomadd; | |
128ea8ab | 454 | |
c581d8b0 | 455 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 456 | |
d62a17ae | 457 | ecomadd = ecommunity_new(); |
458 | ecommunity_add_val(ecomadd, &eval); | |
459 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 460 | } |
14c1a7bf | 461 | |
462 | /* | |
128ea8ab | 463 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
464 | * creation of a VNI. | |
465 | */ | |
d62a17ae | 466 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 467 | { |
d62a17ae | 468 | bgp_evpn_derive_auto_rd(bgp, vpn); |
469 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
470 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 471 | } |
472 | ||
1ec31309 | 473 | /* |
474 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
475 | */ | |
476 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
477 | { | |
478 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
479 | return; | |
480 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
481 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
482 | } | |
483 | ||
128ea8ab | 484 | /* |
485 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 486 | */ |
d62a17ae | 487 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
488 | struct prefix_evpn *p, | |
489 | struct in_addr remote_vtep_ip, int add, | |
d7c0a89a | 490 | uint8_t flags) |
d62a17ae | 491 | { |
492 | struct stream *s; | |
493 | int ipa_len; | |
494 | char buf1[ETHER_ADDR_STRLEN]; | |
495 | char buf2[INET6_ADDRSTRLEN]; | |
496 | char buf3[INET6_ADDRSTRLEN]; | |
497 | ||
498 | /* Check socket. */ | |
499 | if (!zclient || zclient->sock < 0) | |
500 | return 0; | |
501 | ||
502 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
503 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
504 | return 0; | |
505 | ||
506 | s = zclient->obuf; | |
507 | stream_reset(s); | |
508 | ||
996c9314 LB |
509 | zclient_create_header( |
510 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
511 | bgp->vrf_id); | |
d62a17ae | 512 | stream_putl(s, vpn->vni); |
28328ea9 | 513 | stream_put(s, &p->prefix.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 514 | /* IP address length and IP address, if any. */ |
515 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) | |
516 | stream_putl(s, 0); | |
517 | else { | |
518 | ipa_len = IS_EVPN_PREFIX_IPADDR_V4(p) ? IPV4_MAX_BYTELEN | |
519 | : IPV6_MAX_BYTELEN; | |
520 | stream_putl(s, ipa_len); | |
521 | stream_put(s, &p->prefix.ip.ip.addr, ipa_len); | |
522 | } | |
523 | stream_put_in_addr(s, &remote_vtep_ip); | |
524 | ||
ead40654 | 525 | /* TX flags - MAC sticky status and/or gateway mac */ |
d62a17ae | 526 | if (add) |
ead40654 | 527 | stream_putc(s, flags); |
d62a17ae | 528 | |
529 | stream_putw_at(s, 0, stream_get_endp(s)); | |
530 | ||
531 | if (bgp_debug_zebra(NULL)) | |
996c9314 LB |
532 | zlog_debug( |
533 | "Tx %s MACIP, VNI %u MAC %s IP %s (flags: 0x%x) remote VTEP %s", | |
534 | add ? "ADD" : "DEL", vpn->vni, | |
535 | prefix_mac2str(&p->prefix.mac, buf1, sizeof(buf1)), | |
536 | ipaddr2str(&p->prefix.ip, buf3, sizeof(buf3)), flags, | |
537 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, | |
538 | sizeof(buf2))); | |
d62a17ae | 539 | |
540 | return zclient_send_message(zclient); | |
7ef5a232 | 541 | } |
b18825eb | 542 | |
128ea8ab | 543 | /* |
544 | * Add (update) or delete remote VTEP from zebra. | |
545 | */ | |
d62a17ae | 546 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
547 | struct prefix_evpn *p, int add) | |
128ea8ab | 548 | { |
d62a17ae | 549 | struct stream *s; |
128ea8ab | 550 | |
d62a17ae | 551 | /* Check socket. */ |
552 | if (!zclient || zclient->sock < 0) | |
553 | return 0; | |
128ea8ab | 554 | |
d62a17ae | 555 | /* Don't try to register if Zebra doesn't know of this instance. */ |
556 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
557 | return 0; | |
128ea8ab | 558 | |
d62a17ae | 559 | s = zclient->obuf; |
560 | stream_reset(s); | |
128ea8ab | 561 | |
996c9314 LB |
562 | zclient_create_header( |
563 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
564 | bgp->vrf_id); | |
d62a17ae | 565 | stream_putl(s, vpn->vni); |
566 | if (IS_EVPN_PREFIX_IPADDR_V4(p)) | |
567 | stream_put_in_addr(s, &p->prefix.ip.ipaddr_v4); | |
568 | else if (IS_EVPN_PREFIX_IPADDR_V6(p)) { | |
569 | zlog_err( | |
570 | "Bad remote IP when trying to %s remote VTEP for VNI %u", | |
571 | add ? "ADD" : "DEL", vpn->vni); | |
572 | return -1; | |
573 | } | |
128ea8ab | 574 | |
d62a17ae | 575 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 576 | |
d62a17ae | 577 | if (bgp_debug_zebra(NULL)) |
578 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
579 | add ? "ADD" : "DEL", vpn->vni, | |
580 | inet_ntoa(p->prefix.ip.ipaddr_v4)); | |
128ea8ab | 581 | |
d62a17ae | 582 | return zclient_send_message(zclient); |
128ea8ab | 583 | } |
584 | ||
342dd0c6 | 585 | /* |
586 | * Build extended communities for EVPN prefix route. | |
587 | */ | |
588 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
589 | struct attr *attr) | |
590 | { | |
591 | struct ecommunity ecom_encap; | |
592 | struct ecommunity ecom_rmac; | |
593 | struct ecommunity_val eval; | |
594 | struct ecommunity_val eval_rmac; | |
595 | bgp_encap_types tnl_type; | |
596 | struct listnode *node, *nnode; | |
597 | struct ecommunity *ecom; | |
598 | struct list *vrf_export_rtl = NULL; | |
599 | ||
600 | /* Encap */ | |
601 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
602 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
603 | encode_encap_extcomm(tnl_type, &eval); | |
604 | ecom_encap.size = 1; | |
d7c0a89a | 605 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 606 | |
607 | /* Add Encap */ | |
608 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
609 | ||
610 | /* Add the export RTs for L3VNI/VRF */ | |
611 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
612 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
613 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) | |
996c9314 LB |
614 | attr->ecommunity = |
615 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 616 | } |
617 | ||
618 | /* add the router mac extended community */ | |
619 | if (!is_zero_mac(&attr->rmac)) { | |
620 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
621 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
622 | ecom_rmac.size = 1; | |
623 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
624 | attr->ecommunity = |
625 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 626 | } |
627 | ||
628 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
629 | } | |
630 | ||
128ea8ab | 631 | /* |
1ec31309 | 632 | * Build extended communities for EVPN route. |
633 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
634 | * and ENCAP extended communities are applicable for all routes. | |
635 | * The default gateway extended community and MAC mobility (sticky) extended | |
636 | * community are added as needed based on passed settings - only for type-2 | |
637 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
638 | * added, if present, based on passed settings - only for non-link-local | |
639 | * type-2 routes. | |
128ea8ab | 640 | */ |
7ec156a9 | 641 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 642 | int add_l3_ecomm) |
128ea8ab | 643 | { |
d62a17ae | 644 | struct ecommunity ecom_encap; |
645 | struct ecommunity ecom_sticky; | |
ead40654 | 646 | struct ecommunity ecom_default_gw; |
bc59a672 | 647 | struct ecommunity ecom_rmac; |
d62a17ae | 648 | struct ecommunity_val eval; |
649 | struct ecommunity_val eval_sticky; | |
ead40654 | 650 | struct ecommunity_val eval_default_gw; |
bc59a672 | 651 | struct ecommunity_val eval_rmac; |
d62a17ae | 652 | bgp_encap_types tnl_type; |
653 | struct listnode *node, *nnode; | |
654 | struct ecommunity *ecom; | |
d7c0a89a | 655 | uint32_t seqnum; |
7a3e76f1 | 656 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 657 | |
d62a17ae | 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; | |
d7c0a89a | 663 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 664 | |
d62a17ae | 665 | /* Add Encap */ |
666 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 667 | |
7a3e76f1 | 668 | /* Add the export RTs for L2VNI */ |
d62a17ae | 669 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
670 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 671 | |
1ec31309 | 672 | /* Add the export RTs for L3VNI if told to - caller determines |
673 | * when this should be done. | |
523cafc4 | 674 | */ |
1ec31309 | 675 | if (add_l3_ecomm) { |
7ec156a9 MK |
676 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
677 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
678 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
679 | ecom)) | |
996c9314 LB |
680 | attr->ecommunity = ecommunity_merge( |
681 | attr->ecommunity, ecom); | |
7ec156a9 | 682 | } |
f1f8b53c | 683 | } |
7a3e76f1 | 684 | |
1ec31309 | 685 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 686 | if (attr->sticky) { |
687 | seqnum = 0; | |
688 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
689 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
690 | ecom_sticky.size = 1; | |
d7c0a89a | 691 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 692 | attr->ecommunity = |
693 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
694 | } | |
c85c03c7 | 695 | |
1ec31309 | 696 | /* Add RMAC, if told to. */ |
697 | if (add_l3_ecomm) { | |
bc59a672 MK |
698 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
699 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
700 | ecom_rmac.size = 1; | |
701 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
702 | attr->ecommunity = |
703 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
704 | } |
705 | ||
1ec31309 | 706 | /* Add default gateway, if needed. */ |
ead40654 MK |
707 | if (attr->default_gw) { |
708 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
709 | encode_default_gw_extcomm(&eval_default_gw); | |
710 | ecom_default_gw.size = 1; | |
711 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
712 | attr->ecommunity = |
713 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
714 | } |
715 | ||
d62a17ae | 716 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 717 | } |
718 | ||
719 | /* | |
720 | * Add MAC mobility extended community to attribute. | |
721 | */ | |
d7c0a89a | 722 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 723 | { |
724 | struct ecommunity ecom_tmp; | |
725 | struct ecommunity_val eval; | |
d7c0a89a | 726 | uint8_t *ecom_val_ptr; |
d62a17ae | 727 | int i; |
d7c0a89a | 728 | uint8_t *pnt; |
d62a17ae | 729 | int type = 0; |
730 | int sub_type = 0; | |
731 | ||
732 | /* Build MM */ | |
733 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
734 | ||
735 | /* Find current MM ecommunity */ | |
421bb26a | 736 | ecom_val_ptr = NULL; |
d62a17ae | 737 | |
738 | if (attr->ecommunity) { | |
739 | for (i = 0; i < attr->ecommunity->size; i++) { | |
740 | pnt = attr->ecommunity->val + (i * 8); | |
741 | type = *pnt++; | |
742 | sub_type = *pnt++; | |
743 | ||
744 | if (type == ECOMMUNITY_ENCODE_EVPN | |
745 | && sub_type | |
746 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
747 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
748 | + (i * 8)); | |
d62a17ae | 749 | break; |
750 | } | |
751 | } | |
752 | } | |
753 | ||
754 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
755 | if (ecom_val_ptr) { |
756 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 757 | } |
758 | /* Add MM to existing */ | |
759 | else { | |
760 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
761 | ecom_tmp.size = 1; | |
d7c0a89a | 762 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 763 | |
764 | attr->ecommunity = | |
765 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
766 | } | |
128ea8ab | 767 | } |
768 | ||
769 | /* Install EVPN route into zebra. */ | |
d62a17ae | 770 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
771 | struct prefix_evpn *p, | |
d7c0a89a | 772 | struct in_addr remote_vtep_ip, uint8_t flags) |
128ea8ab | 773 | { |
d62a17ae | 774 | int ret; |
128ea8ab | 775 | |
d62a17ae | 776 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
777 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
ead40654 | 778 | 1, flags); |
d62a17ae | 779 | else |
780 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 781 | |
d62a17ae | 782 | return ret; |
128ea8ab | 783 | } |
784 | ||
785 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 786 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
787 | struct prefix_evpn *p, | |
788 | struct in_addr remote_vtep_ip) | |
128ea8ab | 789 | { |
d62a17ae | 790 | int ret; |
128ea8ab | 791 | |
d62a17ae | 792 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
793 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
794 | 0, 0); | |
795 | else | |
796 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 797 | |
d62a17ae | 798 | return ret; |
128ea8ab | 799 | } |
800 | ||
801 | /* | |
802 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
803 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
804 | * from peers. | |
805 | */ | |
d62a17ae | 806 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
807 | struct bgp_node *rn, | |
808 | struct bgp_info *old_local) | |
128ea8ab | 809 | { |
d62a17ae | 810 | struct bgp_node *global_rn; |
811 | struct bgp_info *ri; | |
812 | afi_t afi = AFI_L2VPN; | |
813 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 814 | |
d62a17ae | 815 | /* Locate route node in the global EVPN routing table. Note that |
816 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
817 | * L3VPN routes. | |
818 | */ | |
819 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
820 | (struct prefix *)&rn->p, &vpn->prd); | |
821 | if (global_rn) { | |
822 | /* Delete route entry in the global EVPN table. */ | |
823 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
128ea8ab | 824 | |
d62a17ae | 825 | /* Schedule for processing - withdraws to peers happen from |
826 | * this table. | |
827 | */ | |
828 | if (ri) | |
829 | bgp_process(bgp, global_rn, afi, safi); | |
830 | bgp_unlock_node(global_rn); | |
831 | } | |
128ea8ab | 832 | |
d62a17ae | 833 | /* Delete route entry in the VNI route table, caller to remove. */ |
834 | bgp_info_delete(rn, old_local); | |
128ea8ab | 835 | } |
836 | ||
837 | /* | |
838 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
839 | * if appropriate. | |
840 | */ | |
d62a17ae | 841 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
842 | struct bgp_node *rn) | |
843 | { | |
844 | struct bgp_info *old_select, *new_select; | |
845 | struct bgp_info_pair old_and_new; | |
846 | afi_t afi = AFI_L2VPN; | |
847 | safi_t safi = SAFI_EVPN; | |
848 | int ret = 0; | |
d7c0a89a | 849 | uint8_t flags = 0; |
d62a17ae | 850 | |
851 | /* Compute the best path. */ | |
852 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
853 | afi, safi); | |
854 | old_select = old_and_new.old; | |
855 | new_select = old_and_new.new; | |
856 | ||
857 | /* If the best path hasn't changed - see if there is still something to | |
858 | * update | |
859 | * to zebra RIB. | |
860 | */ | |
861 | if (old_select && old_select == new_select | |
862 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 863 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 864 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
865 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
866 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
867 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
868 | if (old_select->attr->sticky) | |
869 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
870 | if (old_select->attr->default_gw) | |
871 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
996c9314 LB |
872 | ret = evpn_zebra_install( |
873 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
874 | old_select->attr->nexthop, flags); | |
ead40654 | 875 | } |
d62a17ae | 876 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
877 | bgp_zebra_clear_route_change_flags(rn); | |
878 | return ret; | |
879 | } | |
880 | ||
881 | /* If the user did a "clear" this flag will be set */ | |
882 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
883 | ||
884 | /* bestpath has changed; update relevant fields and install or uninstall | |
885 | * into the zebra RIB. | |
886 | */ | |
887 | if (old_select || new_select) | |
888 | bgp_bump_version(rn); | |
889 | ||
890 | if (old_select) | |
891 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
892 | if (new_select) { | |
893 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
894 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
895 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
896 | } | |
897 | ||
898 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 899 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
900 | flags = 0; |
901 | if (new_select->attr->sticky) | |
902 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
903 | if (new_select->attr->default_gw) | |
904 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
d62a17ae | 905 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
996c9314 | 906 | new_select->attr->nexthop, flags); |
d62a17ae | 907 | /* If an old best existed and it was a "local" route, the only |
908 | * reason | |
909 | * it would be supplanted is due to MAC mobility procedures. So, | |
910 | * we | |
911 | * need to do an implicit delete and withdraw that route from | |
912 | * peers. | |
913 | */ | |
914 | if (old_select && old_select->peer == bgp->peer_self | |
915 | && old_select->type == ZEBRA_ROUTE_BGP | |
916 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
917 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
918 | } else { | |
919 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 920 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 921 | ret = evpn_zebra_uninstall(bgp, vpn, |
922 | (struct prefix_evpn *)&rn->p, | |
923 | old_select->attr->nexthop); | |
924 | } | |
925 | ||
926 | /* Clear any route change flags. */ | |
927 | bgp_zebra_clear_route_change_flags(rn); | |
928 | ||
929 | /* Reap old select bgp_info, if it has been removed */ | |
930 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
931 | bgp_info_reap(rn, old_select); | |
932 | ||
933 | return ret; | |
128ea8ab | 934 | } |
935 | ||
ead40654 MK |
936 | /* |
937 | * Return true if the local ri for this rn is of type gateway mac | |
938 | */ | |
939 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
940 | { | |
996c9314 LB |
941 | struct bgp_info *tmp_ri = NULL; |
942 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
943 | |
944 | local_ri = NULL; | |
945 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
946 | if (tmp_ri->peer == bgp->peer_self | |
947 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
948 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
949 | local_ri = tmp_ri; | |
950 | } | |
951 | ||
952 | if (!local_ri) | |
953 | return 0; | |
954 | ||
955 | return local_ri->attr->default_gw; | |
956 | } | |
957 | ||
c85c03c7 | 958 | |
959 | /* | |
960 | * Return true if the local ri for this rn has sticky set | |
961 | */ | |
d62a17ae | 962 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 963 | { |
d62a17ae | 964 | struct bgp_info *tmp_ri; |
965 | struct bgp_info *local_ri; | |
c85c03c7 | 966 | |
d62a17ae | 967 | local_ri = NULL; |
968 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
969 | if (tmp_ri->peer == bgp->peer_self | |
970 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
971 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
972 | local_ri = tmp_ri; | |
973 | } | |
c85c03c7 | 974 | |
d62a17ae | 975 | if (!local_ri) |
976 | return 0; | |
c85c03c7 | 977 | |
d62a17ae | 978 | return local_ri->attr->sticky; |
c85c03c7 | 979 | } |
980 | ||
342dd0c6 | 981 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
982 | struct bgp *bgp_vrf, afi_t afi, | |
983 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 984 | struct attr *attr, int *route_changed) |
342dd0c6 | 985 | { |
986 | struct attr *attr_new = NULL; | |
987 | struct bgp_info *ri = NULL; | |
988 | mpls_label_t label = MPLS_INVALID_LABEL; | |
989 | struct bgp_info *local_ri = NULL; | |
990 | struct bgp_info *tmp_ri = NULL; | |
991 | ||
5424b7ba | 992 | *route_changed = 0; |
342dd0c6 | 993 | /* locate the local route entry if any */ |
994 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
995 | if (tmp_ri->peer == bgp_def->peer_self | |
996 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
997 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
998 | local_ri = tmp_ri; | |
999 | } | |
1000 | ||
1001 | /* create a new route entry if one doesnt exist. | |
523cafc4 | 1002 | Otherwise see if route attr has changed |
1003 | */ | |
342dd0c6 | 1004 | if (!local_ri) { |
1005 | ||
5424b7ba MK |
1006 | /* route has changed as this is the first entry */ |
1007 | *route_changed = 1; | |
1008 | ||
342dd0c6 | 1009 | /* Add (or update) attribute to hash. */ |
1010 | attr_new = bgp_attr_intern(attr); | |
1011 | ||
1012 | /* create the route info from attribute */ | |
1013 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1014 | bgp_def->peer_self, attr_new, rn); | |
1015 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1016 | ||
b57ba6d2 | 1017 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1018 | bgp_info_extra_get(ri); |
1019 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1020 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1021 | ri->extra->num_labels = 1; | |
342dd0c6 | 1022 | |
1023 | /* add the route entry to route node*/ | |
1024 | bgp_info_add(rn, ri); | |
1025 | } else { | |
1026 | ||
1027 | tmp_ri = local_ri; | |
1028 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1029 | |
1030 | /* attribute changed */ | |
1031 | *route_changed = 1; | |
1032 | ||
342dd0c6 | 1033 | /* The attribute has changed. */ |
1034 | /* Add (or update) attribute to hash. */ | |
1035 | attr_new = bgp_attr_intern(attr); | |
1036 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1037 | ||
1038 | /* Restore route, if needed. */ | |
1039 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1040 | bgp_info_restore(rn, tmp_ri); | |
1041 | ||
1042 | /* Unintern existing, set to new. */ | |
1043 | bgp_attr_unintern(&tmp_ri->attr); | |
1044 | tmp_ri->attr = attr_new; | |
1045 | tmp_ri->uptime = bgp_clock(); | |
1046 | } | |
1047 | } | |
1048 | return 0; | |
1049 | } | |
1050 | ||
1051 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1052 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1053 | struct attr *src_attr) | |
342dd0c6 | 1054 | { |
1055 | afi_t afi = AFI_L2VPN; | |
1056 | safi_t safi = SAFI_EVPN; | |
1057 | struct attr attr; | |
1058 | struct bgp_node *rn = NULL; | |
1059 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1060 | int route_changed = 0; |
342dd0c6 | 1061 | |
1062 | bgp_def = bgp_get_default(); | |
1063 | if (!bgp_def) | |
faafdfa8 | 1064 | return 0; |
342dd0c6 | 1065 | |
2f69f6d3 | 1066 | /* Build path attribute for this route - use the source attr, if |
1067 | * present, else treat as locally originated. | |
1068 | */ | |
1069 | if (src_attr) | |
1070 | bgp_attr_dup(&attr, src_attr); | |
1071 | else { | |
1072 | memset(&attr, 0, sizeof(struct attr)); | |
1073 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1074 | } | |
1075 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1076 | attr.nexthop = bgp_vrf->originator_ip; |
1077 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1078 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1079 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1080 | ||
1081 | /* Setup RT and encap extended community */ | |
1082 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1083 | ||
1084 | /* get the route node in global table */ | |
1085 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1086 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1087 | assert(rn); |
1088 | ||
1089 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1090 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1091 | &route_changed); | |
342dd0c6 | 1092 | |
1093 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1094 | if (route_changed) { |
1095 | bgp_process(bgp_def, rn, afi, safi); | |
1096 | bgp_unlock_node(rn); | |
1097 | } | |
342dd0c6 | 1098 | |
1099 | /* uninten temporary */ | |
5ee65f6f | 1100 | if (!src_attr) |
1101 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1102 | return 0; |
1103 | } | |
1104 | ||
128ea8ab | 1105 | /* |
1106 | * Create or update EVPN route entry. This could be in the VNI route table | |
1107 | * or the global route table. | |
1108 | */ | |
d62a17ae | 1109 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1110 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1111 | struct attr *attr, int add, int vni_table, | |
d7c0a89a | 1112 | struct bgp_info **ri, uint8_t flags) |
d62a17ae | 1113 | { |
1114 | struct bgp_info *tmp_ri; | |
1115 | struct bgp_info *local_ri, *remote_ri; | |
1116 | struct attr *attr_new; | |
b57ba6d2 | 1117 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1118 | uint32_t num_labels = 1; |
d62a17ae | 1119 | int route_change = 1; |
d7c0a89a | 1120 | uint8_t sticky = 0; |
b57ba6d2 | 1121 | struct prefix_evpn *evp; |
d62a17ae | 1122 | |
1123 | *ri = NULL; | |
b57ba6d2 MK |
1124 | evp = (struct prefix_evpn *)&rn->p; |
1125 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1126 | |
1127 | /* See if this is an update of an existing route, or a new add. Also, | |
1128 | * identify if already known from remote, and if so, the one with the | |
1129 | * highest sequence number; this is only when adding to the VNI routing | |
1130 | * table. | |
1131 | */ | |
1132 | local_ri = remote_ri = NULL; | |
1133 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1134 | if (tmp_ri->peer == bgp->peer_self | |
1135 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1136 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1137 | local_ri = tmp_ri; | |
1138 | if (vni_table) { | |
1139 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1140 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1141 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { |
1142 | if (!remote_ri) | |
1143 | remote_ri = tmp_ri; | |
1144 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1145 | > mac_mobility_seqnum(remote_ri->attr)) | |
1146 | remote_ri = tmp_ri; | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | /* If route doesn't exist already, create a new one, if told to. | |
1152 | * Otherwise act based on whether the attributes of the route have | |
1153 | * changed or not. | |
1154 | */ | |
1155 | if (!local_ri && !add) | |
1156 | return 0; | |
1157 | ||
1158 | if (!local_ri) { | |
1159 | /* When learnt locally for the first time but already known from | |
1160 | * remote, we have to initiate appropriate MAC mobility steps. | |
1161 | * This | |
1162 | * is applicable when updating the VNI routing table. | |
1a98c087 MK |
1163 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1164 | * SVI) advertised in EVPN. | |
1165 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1166 | */ |
ead40654 | 1167 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) { |
d7c0a89a | 1168 | uint32_t cur_seqnum; |
d62a17ae | 1169 | |
1170 | /* Add MM extended community to route. */ | |
1171 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1172 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1173 | } | |
1174 | ||
1175 | /* Add (or update) attribute to hash. */ | |
1176 | attr_new = bgp_attr_intern(attr); | |
1177 | ||
1178 | /* Extract MAC mobility sequence number, if any. */ | |
1179 | attr_new->mm_seqnum = | |
1180 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1181 | attr_new->sticky = sticky; | |
1182 | ||
1183 | /* Create new route with its attribute. */ | |
1184 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1185 | bgp->peer_self, attr_new, rn); | |
1186 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1187 | bgp_info_extra_get(tmp_ri); | |
1188 | ||
1189 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1190 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1191 | |
1192 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1193 | * Only attach second label if we are advertising two labels for | |
1194 | * type-2 routes. | |
1195 | */ | |
996c9314 LB |
1196 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1197 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1198 | vni_t l3vni; |
1199 | ||
1200 | l3vni = bgpevpn_get_l3vni(vpn); | |
1201 | if (l3vni) { | |
1202 | vni2label(l3vni, &label[1]); | |
1203 | num_labels++; | |
1204 | } | |
1205 | } | |
d62a17ae | 1206 | |
b57ba6d2 MK |
1207 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1208 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1209 | bgp_info_add(rn, tmp_ri); |
1210 | } else { | |
1211 | tmp_ri = local_ri; | |
1212 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1213 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1214 | route_change = 0; | |
1215 | else { | |
c48d9f5f MK |
1216 | /* |
1217 | * The attributes have changed, type-2 routes needs to | |
1218 | * be advertised with right labels. | |
1219 | */ | |
1220 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1221 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1222 | && CHECK_FLAG(vpn->flags, | |
1223 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1224 | vni_t l3vni; |
1225 | ||
1226 | l3vni = bgpevpn_get_l3vni(vpn); | |
1227 | if (l3vni) { | |
1228 | vni2label(l3vni, &label[1]); | |
1229 | num_labels++; | |
1230 | } | |
1231 | } | |
1232 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1233 | tmp_ri->extra->num_labels = num_labels; | |
1234 | ||
d62a17ae | 1235 | /* The attribute has changed. */ |
1236 | /* Add (or update) attribute to hash. */ | |
1237 | attr_new = bgp_attr_intern(attr); | |
1238 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1239 | ||
1240 | /* Restore route, if needed. */ | |
1241 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1242 | bgp_info_restore(rn, tmp_ri); | |
1243 | ||
1244 | /* Unintern existing, set to new. */ | |
1245 | bgp_attr_unintern(&tmp_ri->attr); | |
1246 | tmp_ri->attr = attr_new; | |
1247 | tmp_ri->uptime = bgp_clock(); | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | /* Return back the route entry. */ | |
1252 | *ri = tmp_ri; | |
1253 | return route_change; | |
128ea8ab | 1254 | } |
1255 | ||
1256 | /* | |
1257 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1258 | * and schedule for processing. | |
1259 | */ | |
d62a17ae | 1260 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
d7c0a89a | 1261 | struct prefix_evpn *p, uint8_t flags) |
128ea8ab | 1262 | { |
d62a17ae | 1263 | struct bgp_node *rn; |
1264 | struct attr attr; | |
1265 | struct attr *attr_new; | |
1ec31309 | 1266 | int add_l3_ecomm = 0; |
d62a17ae | 1267 | struct bgp_info *ri; |
1268 | afi_t afi = AFI_L2VPN; | |
1269 | safi_t safi = SAFI_EVPN; | |
1270 | int route_change; | |
128ea8ab | 1271 | |
d62a17ae | 1272 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1273 | |
d62a17ae | 1274 | /* Build path-attribute for this route. */ |
1275 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1276 | attr.nexthop = vpn->originator_ip; | |
1277 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1278 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1279 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1280 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
be41eb68 MK |
1281 | |
1282 | /* PMSI is only needed for type-3 routes */ | |
1283 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1284 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1285 | ||
1ec31309 | 1286 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1287 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1288 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1289 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1290 | |
1ec31309 | 1291 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1292 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1293 | * these routes. | |
1294 | */ | |
1295 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
1296 | (IS_EVPN_PREFIX_IPADDR_V4(p) || | |
1297 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.ip.ipaddr_v6)) && | |
1298 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1299 | add_l3_ecomm = 1; | |
1300 | ||
1301 | /* Set up extended community. */ | |
1302 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1303 | |
d62a17ae | 1304 | /* First, create (or fetch) route node within the VNI. */ |
1305 | /* NOTE: There is no RD here. */ | |
1306 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1307 | |
d62a17ae | 1308 | /* Create or update route entry. */ |
1309 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1310 | 1, 1, &ri, flags); |
d62a17ae | 1311 | assert(ri); |
1312 | attr_new = ri->attr; | |
128ea8ab | 1313 | |
d62a17ae | 1314 | /* Perform route selection; this is just to set the flags correctly |
1315 | * as local route in the VNI always wins. | |
1316 | */ | |
1317 | evpn_route_select_install(bgp, vpn, rn); | |
1318 | bgp_unlock_node(rn); | |
128ea8ab | 1319 | |
d62a17ae | 1320 | /* If this is a new route or some attribute has changed, export the |
1321 | * route to the global table. The route will be advertised to peers | |
1322 | * from there. Note that this table is a 2-level tree (RD-level + | |
1323 | * Prefix-level) similar to L3VPN routes. | |
1324 | */ | |
1325 | if (route_change) { | |
1326 | struct bgp_info *global_ri; | |
128ea8ab | 1327 | |
d62a17ae | 1328 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1329 | (struct prefix *)p, &vpn->prd); | |
1330 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1331 | &global_ri, flags); |
128ea8ab | 1332 | |
d62a17ae | 1333 | /* Schedule for processing and unlock node. */ |
1334 | bgp_process(bgp, rn, afi, safi); | |
1335 | bgp_unlock_node(rn); | |
1336 | } | |
128ea8ab | 1337 | |
d62a17ae | 1338 | /* Unintern temporary. */ |
1339 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1340 | |
d62a17ae | 1341 | return 0; |
128ea8ab | 1342 | } |
1343 | ||
342dd0c6 | 1344 | /* Delete EVPN type5 route entry from global table */ |
1345 | static void delete_evpn_type5_route_entry(struct bgp *bgp_def, | |
996c9314 LB |
1346 | struct bgp *bgp_vrf, afi_t afi, |
1347 | safi_t safi, struct bgp_node *rn, | |
342dd0c6 | 1348 | struct bgp_info **ri) |
1349 | { | |
1350 | struct bgp_info *tmp_ri = NULL; | |
1351 | ||
1352 | *ri = NULL; | |
1353 | ||
1354 | /* find the matching route entry */ | |
1355 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1356 | if (tmp_ri->peer == bgp_def->peer_self | |
1357 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1358 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1359 | break; | |
1360 | ||
1361 | *ri = tmp_ri; | |
1362 | ||
1363 | /* Mark route for delete. */ | |
1364 | if (tmp_ri) | |
1365 | bgp_info_delete(rn, tmp_ri); | |
1366 | } | |
1367 | ||
1368 | /* Delete EVPN type5 route */ | |
996c9314 | 1369 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1370 | { |
1371 | afi_t afi = AFI_L2VPN; | |
1372 | safi_t safi = SAFI_EVPN; | |
1373 | struct bgp_node *rn = NULL; | |
1374 | struct bgp_info *ri = NULL; | |
1375 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1376 | ||
1377 | bgp_def = bgp_get_default(); | |
1378 | if (!bgp_def) | |
faafdfa8 | 1379 | return 0; |
342dd0c6 | 1380 | |
1381 | /* locate the global route entry for this type-5 prefix */ | |
1382 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1383 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1384 | if (!rn) | |
1385 | return 0; | |
1386 | ||
1387 | delete_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &ri); | |
1388 | if (ri) | |
1389 | bgp_process(bgp_def, rn, afi, safi); | |
1390 | bgp_unlock_node(rn); | |
1391 | return 0; | |
1392 | } | |
1393 | ||
128ea8ab | 1394 | /* |
1395 | * Delete EVPN route entry. This could be in the VNI route table | |
1396 | * or the global route table. | |
1397 | */ | |
d62a17ae | 1398 | static void delete_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1399 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1400 | struct bgp_info **ri) | |
128ea8ab | 1401 | { |
d62a17ae | 1402 | struct bgp_info *tmp_ri; |
128ea8ab | 1403 | |
d62a17ae | 1404 | *ri = NULL; |
128ea8ab | 1405 | |
d62a17ae | 1406 | /* Now, find matching route. */ |
1407 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1408 | if (tmp_ri->peer == bgp->peer_self | |
1409 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1410 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1411 | break; | |
128ea8ab | 1412 | |
d62a17ae | 1413 | *ri = tmp_ri; |
128ea8ab | 1414 | |
d62a17ae | 1415 | /* Mark route for delete. */ |
1416 | if (tmp_ri) | |
1417 | bgp_info_delete(rn, tmp_ri); | |
128ea8ab | 1418 | } |
1419 | ||
1420 | /* | |
1421 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1422 | * schedule for processing. | |
1423 | */ | |
d62a17ae | 1424 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1425 | struct prefix_evpn *p) | |
1426 | { | |
1427 | struct bgp_node *rn, *global_rn; | |
1428 | struct bgp_info *ri; | |
1429 | afi_t afi = AFI_L2VPN; | |
1430 | safi_t safi = SAFI_EVPN; | |
1431 | ||
1432 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1433 | * there | |
1434 | * is nothing further to do. | |
1435 | */ | |
1436 | /* NOTE: There is no RD here. */ | |
1437 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1438 | if (!rn) | |
1439 | return 0; | |
1440 | ||
1441 | /* Next, locate route node in the global EVPN routing table. Note that | |
1442 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1443 | * L3VPN routes. | |
1444 | */ | |
1445 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1446 | (struct prefix *)p, &vpn->prd); | |
1447 | if (global_rn) { | |
1448 | /* Delete route entry in the global EVPN table. */ | |
1449 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
1450 | ||
1451 | /* Schedule for processing - withdraws to peers happen from | |
1452 | * this table. | |
1453 | */ | |
1454 | if (ri) | |
1455 | bgp_process(bgp, global_rn, afi, safi); | |
1456 | bgp_unlock_node(global_rn); | |
1457 | } | |
1458 | ||
1459 | /* Delete route entry in the VNI route table. This can just be removed. | |
1460 | */ | |
1461 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); | |
1462 | if (ri) | |
1463 | bgp_info_reap(rn, ri); | |
1464 | bgp_unlock_node(rn); | |
1465 | ||
1466 | return 0; | |
128ea8ab | 1467 | } |
1468 | ||
1469 | /* | |
1470 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1471 | * be scheduled for advertise to peers. | |
1472 | */ | |
d62a17ae | 1473 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1474 | { | |
1475 | afi_t afi; | |
1476 | safi_t safi; | |
1477 | struct bgp_node *rn; | |
1478 | struct bgp_info *ri; | |
1479 | struct attr attr; | |
1480 | struct attr attr_sticky; | |
ead40654 | 1481 | struct attr attr_def_gw; |
1ec31309 | 1482 | struct attr attr_ip6_ll; |
d62a17ae | 1483 | struct attr *attr_new; |
1ec31309 | 1484 | int add_l3_ecomm = 0; |
d62a17ae | 1485 | |
1486 | afi = AFI_L2VPN; | |
1487 | safi = SAFI_EVPN; | |
1488 | memset(&attr, 0, sizeof(struct attr)); | |
1489 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
ead40654 | 1490 | memset(&attr_def_gw, 0, sizeof(struct attr)); |
1ec31309 | 1491 | memset(&attr_ip6_ll, 0, sizeof(struct attr)); |
d62a17ae | 1492 | |
1ec31309 | 1493 | /* Build path-attribute - multiple type-2 routes for this VNI will share |
1494 | * the same path attribute, but we need separate structures for sticky | |
1495 | * MACs, default gateway and IPv6 link-local addresses (no L3 RT/RMAC). | |
d62a17ae | 1496 | */ |
1497 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1498 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
ead40654 | 1499 | bgp_attr_default_set(&attr_def_gw, BGP_ORIGIN_IGP); |
d62a17ae | 1500 | attr.nexthop = vpn->originator_ip; |
1501 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1502 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1503 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1504 | attr_sticky.nexthop = vpn->originator_ip; |
1505 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1506 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1507 | attr_sticky.sticky = 1; | |
bc59a672 | 1508 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
ead40654 MK |
1509 | attr_def_gw.nexthop = vpn->originator_ip; |
1510 | attr_def_gw.mp_nexthop_global_in = vpn->originator_ip; | |
1511 | attr_def_gw.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1512 | attr_def_gw.default_gw = 1; | |
1513 | bgpevpn_get_rmac(vpn, &attr_def_gw.rmac); | |
1ec31309 | 1514 | bgp_attr_default_set(&attr_ip6_ll, BGP_ORIGIN_IGP); |
1515 | attr_ip6_ll.nexthop = vpn->originator_ip; | |
1516 | attr_ip6_ll.mp_nexthop_global_in = vpn->originator_ip; | |
1517 | attr_ip6_ll.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1518 | ||
1519 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local attributes if | |
1520 | * using L3 VNI for type-2 routes also. | |
1521 | */ | |
1522 | if (CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1523 | add_l3_ecomm = 1; | |
1524 | ||
1525 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1526 | build_evpn_route_extcomm(vpn, &attr_sticky, add_l3_ecomm); | |
1527 | build_evpn_route_extcomm(vpn, &attr_def_gw, add_l3_ecomm); | |
1528 | build_evpn_route_extcomm(vpn, &attr_ip6_ll, 0); | |
d62a17ae | 1529 | |
1530 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1531 | * routes updated, update corresponding entry in the global table too. | |
1532 | */ | |
1533 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1534 | rn = bgp_route_next(rn)) { | |
1535 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1536 | struct bgp_node *rd_rn; | |
1537 | struct bgp_info *global_ri; | |
1538 | ||
1539 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1540 | continue; | |
1541 | ||
1ec31309 | 1542 | if (IS_EVPN_PREFIX_IPADDR_V6(evp) && |
1543 | IN6_IS_ADDR_LINKLOCAL(&evp->prefix.ip.ipaddr_v6)) | |
1544 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1545 | &attr_ip6_ll, 0, 1, &ri, 0); | |
1546 | else { | |
7ec156a9 MK |
1547 | if (evpn_route_is_sticky(bgp, rn)) |
1548 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1549 | &attr_sticky, 0, 1, &ri, |
1550 | 0); | |
ead40654 MK |
1551 | else if (evpn_route_is_def_gw(bgp, rn)) |
1552 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1553 | &attr_def_gw, 0, 1, &ri, |
1554 | 0); | |
7ec156a9 MK |
1555 | else |
1556 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1557 | &attr, 0, 1, &ri, 0); | |
7ec156a9 | 1558 | } |
d62a17ae | 1559 | |
1560 | /* If a local route exists for this prefix, we need to update | |
1561 | * the global routing table too. | |
1562 | */ | |
1563 | if (!ri) | |
1564 | continue; | |
1565 | ||
1566 | /* Perform route selection; this is just to set the flags | |
1567 | * correctly | |
1568 | * as local route in the VNI always wins. | |
1569 | */ | |
1570 | evpn_route_select_install(bgp, vpn, rn); | |
1571 | ||
1572 | attr_new = ri->attr; | |
1573 | ||
1574 | /* Update route in global routing table. */ | |
1575 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1576 | (struct prefix *)evp, &vpn->prd); | |
1577 | assert(rd_rn); | |
1578 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
1a98c087 | 1579 | 0, &global_ri, 0); |
d62a17ae | 1580 | |
1581 | /* Schedule for processing and unlock node. */ | |
1582 | bgp_process(bgp, rd_rn, afi, safi); | |
1583 | bgp_unlock_node(rd_rn); | |
1584 | } | |
1585 | ||
1586 | /* Unintern temporary. */ | |
1587 | aspath_unintern(&attr.aspath); | |
1588 | aspath_unintern(&attr_sticky.aspath); | |
ead40654 | 1589 | aspath_unintern(&attr_def_gw.aspath); |
1ec31309 | 1590 | aspath_unintern(&attr_ip6_ll.aspath); |
d62a17ae | 1591 | |
1592 | return 0; | |
128ea8ab | 1593 | } |
1594 | ||
1595 | /* | |
1596 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
1597 | * global routing table. These are also scheduled for withdraw from peers. | |
1598 | */ | |
d62a17ae | 1599 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1600 | { |
d62a17ae | 1601 | afi_t afi; |
1602 | safi_t safi; | |
1603 | struct bgp_node *rdrn, *rn; | |
1604 | struct bgp_table *table; | |
1605 | struct bgp_info *ri; | |
128ea8ab | 1606 | |
d62a17ae | 1607 | afi = AFI_L2VPN; |
1608 | safi = SAFI_EVPN; | |
128ea8ab | 1609 | |
d62a17ae | 1610 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
1611 | if (rdrn && rdrn->info) { | |
1612 | table = (struct bgp_table *)rdrn->info; | |
1613 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
1614 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1615 | |
d62a17ae | 1616 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1617 | continue; | |
128ea8ab | 1618 | |
d62a17ae | 1619 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
1620 | if (ri) | |
1621 | bgp_process(bgp, rn, afi, safi); | |
1622 | } | |
1623 | } | |
128ea8ab | 1624 | |
d62a17ae | 1625 | /* Unlock RD node. */ |
1626 | if (rdrn) | |
1627 | bgp_unlock_node(rdrn); | |
128ea8ab | 1628 | |
d62a17ae | 1629 | return 0; |
128ea8ab | 1630 | } |
1631 | ||
1632 | /* | |
1633 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
1634 | * table as well as the per-VNI route table. | |
1635 | */ | |
d62a17ae | 1636 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1637 | { |
d62a17ae | 1638 | afi_t afi; |
1639 | safi_t safi; | |
1640 | struct bgp_node *rn; | |
1641 | struct bgp_info *ri; | |
128ea8ab | 1642 | |
d62a17ae | 1643 | afi = AFI_L2VPN; |
1644 | safi = SAFI_EVPN; | |
128ea8ab | 1645 | |
d62a17ae | 1646 | /* First, walk the global route table for this VNI's type-2 local |
1647 | * routes. | |
1648 | * EVPN routes are a 2-level table, first get the RD table. | |
1649 | */ | |
1650 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 1651 | |
d62a17ae | 1652 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
1653 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1654 | rn = bgp_route_next(rn)) { | |
1655 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1656 | |
d62a17ae | 1657 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1658 | continue; | |
128ea8ab | 1659 | |
d62a17ae | 1660 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
128ea8ab | 1661 | |
d62a17ae | 1662 | /* Route entry in local table gets deleted immediately. */ |
1663 | if (ri) | |
1664 | bgp_info_reap(rn, ri); | |
1665 | } | |
128ea8ab | 1666 | |
d62a17ae | 1667 | return 0; |
128ea8ab | 1668 | } |
1669 | ||
1670 | /* | |
1671 | * Delete all routes in the per-VNI route table. | |
1672 | */ | |
d62a17ae | 1673 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1674 | { |
d62a17ae | 1675 | struct bgp_node *rn; |
1676 | struct bgp_info *ri, *nextri; | |
128ea8ab | 1677 | |
d62a17ae | 1678 | /* Walk this VNI's route table and delete all routes. */ |
1679 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1680 | rn = bgp_route_next(rn)) { | |
1681 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
1682 | ri = nextri) { | |
1683 | bgp_info_delete(rn, ri); | |
1684 | bgp_info_reap(rn, ri); | |
1685 | } | |
1686 | } | |
128ea8ab | 1687 | |
d62a17ae | 1688 | return 0; |
128ea8ab | 1689 | } |
1690 | ||
1691 | /* | |
1692 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
1693 | * export RT getting modified or change to tunnel IP. Note that these | |
1694 | * situations need the route in the per-VNI table as well as the global | |
1695 | * table to be updated (as attributes change). | |
1696 | */ | |
d62a17ae | 1697 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1698 | { |
d62a17ae | 1699 | int ret; |
1700 | struct prefix_evpn p; | |
128ea8ab | 1701 | |
d62a17ae | 1702 | /* Update and advertise the type-3 route (only one) followed by the |
1703 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
1704 | */ | |
1705 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1706 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
1707 | if (ret) | |
1708 | return ret; | |
128ea8ab | 1709 | |
d62a17ae | 1710 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 1711 | } |
1712 | ||
1713 | /* | |
1714 | * Delete (and withdraw) local routes for specified VNI from the global | |
1715 | * table and per-VNI table. After this, remove all other routes from | |
1716 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
1717 | * (advertise-all-vni) being disabled. | |
1718 | */ | |
d62a17ae | 1719 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1720 | { |
d62a17ae | 1721 | int ret; |
1722 | struct prefix_evpn p; | |
128ea8ab | 1723 | |
d62a17ae | 1724 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
1725 | * followed by type-3 routes (only one) - for this VNI. | |
1726 | */ | |
1727 | ret = delete_all_type2_routes(bgp, vpn); | |
1728 | if (ret) | |
1729 | return ret; | |
128ea8ab | 1730 | |
d62a17ae | 1731 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
1732 | ret = delete_evpn_route(bgp, vpn, &p); | |
1733 | if (ret) | |
1734 | return ret; | |
128ea8ab | 1735 | |
d62a17ae | 1736 | /* Delete all routes from the per-VNI table. */ |
1737 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 1738 | } |
1739 | ||
1740 | /* | |
d1911c26 | 1741 | * There is a tunnel endpoint IP address change for this VNI, delete |
1742 | * prior type-3 route (if needed) and update. | |
1743 | * Note: Route re-advertisement happens elsewhere after other processing | |
1744 | * other changes. | |
128ea8ab | 1745 | */ |
d62a17ae | 1746 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
1747 | struct in_addr originator_ip) | |
128ea8ab | 1748 | { |
d62a17ae | 1749 | struct prefix_evpn p; |
128ea8ab | 1750 | |
ddd16ed5 MK |
1751 | /* If VNI is not live, we only need to update the originator ip */ |
1752 | if (!is_vni_live(vpn)) { | |
1753 | vpn->originator_ip = originator_ip; | |
1754 | return 0; | |
1755 | } | |
1756 | ||
db0e1937 MK |
1757 | /* Update the tunnel-ip hash */ |
1758 | bgp_tip_del(bgp, &vpn->originator_ip); | |
1759 | bgp_tip_add(bgp, &originator_ip); | |
1760 | ||
1761 | /* filter routes as martian nexthop db has changed */ | |
1762 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
1763 | ||
d62a17ae | 1764 | /* Need to withdraw type-3 route as the originator IP is part |
1765 | * of the key. | |
1766 | */ | |
1767 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1768 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 1769 | |
d62a17ae | 1770 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
1771 | vpn->originator_ip = originator_ip; | |
d1911c26 | 1772 | return 0; |
128ea8ab | 1773 | } |
1774 | ||
d3135ba3 | 1775 | /* |
1776 | * Install route entry into the VRF routing table and invoke route selection. | |
1777 | */ | |
1778 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1779 | struct prefix_evpn *evp, | |
1780 | struct bgp_info *parent_ri) | |
1781 | { | |
1782 | struct bgp_node *rn; | |
1783 | struct bgp_info *ri; | |
1ec31309 | 1784 | struct attr attr; |
d3135ba3 | 1785 | struct attr *attr_new; |
c4edf708 | 1786 | int ret = 0; |
d3135ba3 | 1787 | struct prefix p; |
1788 | struct prefix *pp = &p; | |
1789 | afi_t afi = 0; | |
1790 | safi_t safi = 0; | |
1eb88002 MK |
1791 | char buf[PREFIX_STRLEN]; |
1792 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1793 | |
1794 | memset(pp, 0, sizeof(struct prefix)); | |
90264d64 MK |
1795 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1796 | ip_prefix_from_type2_prefix(evp, pp); | |
523cafc4 | 1797 | else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) |
90264d64 | 1798 | ip_prefix_from_type5_prefix(evp, pp); |
d3135ba3 | 1799 | |
1eb88002 | 1800 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
1801 | zlog_debug( |
1802 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
1803 | prefix2str(evp, buf, sizeof(buf)), | |
1804 | prefix2str(pp, buf1, sizeof(buf)), | |
1805 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
1806 | } |
1807 | ||
d3135ba3 | 1808 | /* Create (or fetch) route within the VRF. */ |
1809 | /* NOTE: There is no RD here. */ | |
1810 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) { | |
1811 | afi = AFI_IP; | |
1812 | safi = SAFI_UNICAST; | |
1813 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
1814 | } else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) { | |
1815 | afi = AFI_IP6; | |
1816 | safi = SAFI_UNICAST; | |
1817 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
1818 | } else | |
1819 | return 0; | |
1820 | ||
1ec31309 | 1821 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
1822 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
1823 | * route, we have to convert the next hop to an IPv4-mapped address | |
1824 | * for the rest of the code to flow through. | |
1825 | */ | |
1826 | bgp_attr_dup(&attr, parent_ri->attr); | |
1827 | if (afi == AFI_IP6) | |
1828 | evpn_convert_nexthop_to_ipv6(&attr); | |
1829 | ||
d3135ba3 | 1830 | /* Check if route entry is already present. */ |
1831 | for (ri = rn->info; ri; ri = ri->next) | |
1832 | if (ri->extra | |
1833 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1834 | break; | |
1835 | ||
1836 | if (!ri) { | |
1837 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 1838 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 1839 | |
1840 | /* Create new route with its attribute. */ | |
90f4f482 | 1841 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 1842 | parent_ri->peer, attr_new, rn); |
1843 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1844 | bgp_info_extra_get(ri); | |
1845 | ri->extra->parent = parent_ri; | |
b57ba6d2 | 1846 | if (parent_ri->extra) { |
d3135ba3 | 1847 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
1848 | sizeof(ri->extra->label)); |
1849 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
1850 | } | |
d3135ba3 | 1851 | bgp_info_add(rn, ri); |
1852 | } else { | |
1ec31309 | 1853 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 1854 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
1855 | bgp_unlock_node(rn); | |
1856 | return 0; | |
1857 | } | |
1858 | /* The attribute has changed. */ | |
1859 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 1860 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 1861 | |
1862 | /* Restore route, if needed. */ | |
1863 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1864 | bgp_info_restore(rn, ri); | |
1865 | ||
1866 | /* Mark if nexthop has changed. */ | |
1ec31309 | 1867 | if ((afi == AFI_IP && |
1868 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
1869 | (afi == AFI_IP6 && | |
1870 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
1871 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 1872 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
1873 | ||
1874 | /* Unintern existing, set to new. */ | |
1875 | bgp_attr_unintern(&ri->attr); | |
1876 | ri->attr = attr_new; | |
1877 | ri->uptime = bgp_clock(); | |
1878 | } | |
1879 | ||
1880 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 1881 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 1882 | |
1883 | return ret; | |
1884 | } | |
1885 | ||
128ea8ab | 1886 | /* |
1887 | * Install route entry into the VNI routing table and invoke route selection. | |
1888 | */ | |
d62a17ae | 1889 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1890 | struct prefix_evpn *p, | |
1891 | struct bgp_info *parent_ri) | |
1892 | { | |
1893 | struct bgp_node *rn; | |
1894 | struct bgp_info *ri; | |
1895 | struct attr *attr_new; | |
1896 | int ret; | |
1897 | ||
1898 | /* Create (or fetch) route within the VNI. */ | |
1899 | /* NOTE: There is no RD here. */ | |
1900 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
1901 | ||
1902 | /* Check if route entry is already present. */ | |
1903 | for (ri = rn->info; ri; ri = ri->next) | |
1904 | if (ri->extra | |
1905 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1906 | break; | |
1907 | ||
1908 | if (!ri) { | |
1909 | /* Add (or update) attribute to hash. */ | |
1910 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1911 | ||
1912 | /* Create new route with its attribute. */ | |
90f4f482 | 1913 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 1914 | parent_ri->peer, attr_new, rn); |
1915 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1916 | bgp_info_extra_get(ri); | |
1917 | ri->extra->parent = parent_ri; | |
b57ba6d2 | 1918 | if (parent_ri->extra) { |
d62a17ae | 1919 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
1920 | sizeof(ri->extra->label)); |
1921 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
1922 | } | |
d62a17ae | 1923 | bgp_info_add(rn, ri); |
1924 | } else { | |
1925 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1926 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
1927 | bgp_unlock_node(rn); | |
1928 | return 0; | |
1929 | } | |
1930 | /* The attribute has changed. */ | |
1931 | /* Add (or update) attribute to hash. */ | |
1932 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1933 | ||
1934 | /* Restore route, if needed. */ | |
1935 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1936 | bgp_info_restore(rn, ri); | |
1937 | ||
1938 | /* Mark if nexthop has changed. */ | |
1939 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1940 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
1941 | ||
1942 | /* Unintern existing, set to new. */ | |
1943 | bgp_attr_unintern(&ri->attr); | |
1944 | ri->attr = attr_new; | |
1945 | ri->uptime = bgp_clock(); | |
1946 | } | |
1947 | ||
1948 | /* Perform route selection and update zebra, if required. */ | |
1949 | ret = evpn_route_select_install(bgp, vpn, rn); | |
1950 | ||
1951 | return ret; | |
128ea8ab | 1952 | } |
1953 | ||
d3135ba3 | 1954 | /* |
1955 | * Uninstall route entry from the VRF routing table and send message | |
1956 | * to zebra, if appropriate. | |
1957 | */ | |
1958 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1959 | struct prefix_evpn *evp, | |
1960 | struct bgp_info *parent_ri) | |
1961 | { | |
1962 | struct bgp_node *rn; | |
1963 | struct bgp_info *ri; | |
c4edf708 | 1964 | int ret = 0; |
d3135ba3 | 1965 | struct prefix p; |
1966 | struct prefix *pp = &p; | |
1967 | afi_t afi = 0; | |
1968 | safi_t safi = 0; | |
1eb88002 MK |
1969 | char buf[PREFIX_STRLEN]; |
1970 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1971 | |
1972 | memset(pp, 0, sizeof(struct prefix)); | |
42cb44f2 MK |
1973 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1974 | ip_prefix_from_type2_prefix(evp, pp); | |
655b04d1 | 1975 | else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) |
42cb44f2 | 1976 | ip_prefix_from_type5_prefix(evp, pp); |
d3135ba3 | 1977 | |
1eb88002 | 1978 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
1979 | zlog_debug( |
1980 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
1981 | prefix2str(evp, buf, sizeof(buf)), | |
1982 | prefix2str(pp, buf1, sizeof(buf)), | |
1983 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
1984 | } |
1985 | ||
d3135ba3 | 1986 | /* Locate route within the VRF. */ |
1987 | /* NOTE: There is no RD here. */ | |
1988 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) { | |
1989 | afi = AFI_IP; | |
1990 | safi = SAFI_UNICAST; | |
1991 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1992 | } else { | |
1993 | afi = AFI_IP6; | |
1994 | safi = SAFI_UNICAST; | |
1995 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1996 | } | |
1997 | ||
1998 | if (!rn) | |
1999 | return 0; | |
2000 | ||
2001 | /* Find matching route entry. */ | |
2002 | for (ri = rn->info; ri; ri = ri->next) | |
2003 | if (ri->extra | |
2004 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2005 | break; | |
2006 | ||
2007 | if (!ri) | |
2008 | return 0; | |
2009 | ||
2010 | /* Mark entry for deletion */ | |
2011 | bgp_info_delete(rn, ri); | |
2012 | ||
2013 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2014 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2015 | |
2016 | /* Unlock route node. */ | |
2017 | bgp_unlock_node(rn); | |
2018 | ||
2019 | return ret; | |
2020 | } | |
2021 | ||
128ea8ab | 2022 | /* |
2023 | * Uninstall route entry from the VNI routing table and send message | |
2024 | * to zebra, if appropriate. | |
2025 | */ | |
d62a17ae | 2026 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2027 | struct prefix_evpn *p, | |
2028 | struct bgp_info *parent_ri) | |
128ea8ab | 2029 | { |
d62a17ae | 2030 | struct bgp_node *rn; |
2031 | struct bgp_info *ri; | |
2032 | int ret; | |
128ea8ab | 2033 | |
d62a17ae | 2034 | /* Locate route within the VNI. */ |
2035 | /* NOTE: There is no RD here. */ | |
2036 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2037 | if (!rn) | |
2038 | return 0; | |
128ea8ab | 2039 | |
d62a17ae | 2040 | /* Find matching route entry. */ |
2041 | for (ri = rn->info; ri; ri = ri->next) | |
2042 | if (ri->extra | |
2043 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2044 | break; | |
128ea8ab | 2045 | |
d62a17ae | 2046 | if (!ri) |
2047 | return 0; | |
128ea8ab | 2048 | |
d62a17ae | 2049 | /* Mark entry for deletion */ |
2050 | bgp_info_delete(rn, ri); | |
128ea8ab | 2051 | |
d62a17ae | 2052 | /* Perform route selection and update zebra, if required. */ |
2053 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2054 | |
d62a17ae | 2055 | /* Unlock route node. */ |
2056 | bgp_unlock_node(rn); | |
128ea8ab | 2057 | |
d62a17ae | 2058 | return ret; |
128ea8ab | 2059 | } |
2060 | ||
5ba238b7 MK |
2061 | /* |
2062 | * Given a route entry and a VRF, see if this route entry should be | |
2063 | * imported into the VRF i.e., RTs match. | |
2064 | */ | |
996c9314 | 2065 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2066 | { |
2067 | struct attr *attr = ri->attr; | |
2068 | struct ecommunity *ecom; | |
2069 | int i; | |
2070 | ||
2071 | assert(attr); | |
2072 | /* Route should have valid RT to be even considered. */ | |
2073 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2074 | return 0; | |
2075 | ||
2076 | ecom = attr->ecommunity; | |
2077 | if (!ecom || !ecom->size) | |
2078 | return 0; | |
2079 | ||
2080 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2081 | * matches, we're done. | |
2082 | */ | |
2083 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2084 | uint8_t *pnt; |
2085 | uint8_t type, sub_type; | |
5ba238b7 MK |
2086 | struct ecommunity_val *eval; |
2087 | struct ecommunity_val eval_tmp; | |
2088 | struct vrf_irt_node *irt; | |
2089 | ||
2090 | /* Only deal with RTs */ | |
2091 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2092 | eval = (struct ecommunity_val *)(ecom->val | |
2093 | + (i * ECOMMUNITY_SIZE)); | |
2094 | type = *pnt++; | |
2095 | sub_type = *pnt++; | |
2096 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2097 | continue; | |
2098 | ||
2099 | /* See if this RT matches specified VNIs import RTs */ | |
2100 | irt = lookup_vrf_import_rt(eval); | |
2101 | if (irt && irt->vrfs) | |
2102 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
2103 | return 1; | |
2104 | ||
2105 | /* Also check for non-exact match. In this, we mask out the AS | |
2106 | * and | |
2107 | * only check on the local-admin sub-field. This is to | |
2108 | * facilitate using | |
2109 | * VNI as the RT for EBGP peering too. | |
2110 | */ | |
2111 | irt = NULL; | |
2112 | if (type == ECOMMUNITY_ENCODE_AS | |
2113 | || type == ECOMMUNITY_ENCODE_AS4 | |
2114 | || type == ECOMMUNITY_ENCODE_IP) { | |
2115 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2116 | mask_ecom_global_admin(&eval_tmp, eval); | |
2117 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2118 | } | |
2119 | if (irt && irt->vrfs) | |
2120 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
2121 | return 1; | |
2122 | } | |
2123 | ||
2124 | return 0; | |
2125 | } | |
2126 | ||
128ea8ab | 2127 | /* |
2128 | * Given a route entry and a VNI, see if this route entry should be | |
2129 | * imported into the VNI i.e., RTs match. | |
2130 | */ | |
d62a17ae | 2131 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2132 | struct bgp_info *ri) | |
2133 | { | |
2134 | struct attr *attr = ri->attr; | |
2135 | struct ecommunity *ecom; | |
2136 | int i; | |
2137 | ||
2138 | assert(attr); | |
2139 | /* Route should have valid RT to be even considered. */ | |
2140 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2141 | return 0; | |
2142 | ||
2143 | ecom = attr->ecommunity; | |
2144 | if (!ecom || !ecom->size) | |
2145 | return 0; | |
2146 | ||
2147 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2148 | * matches, we're done. | |
2149 | */ | |
2150 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2151 | uint8_t *pnt; |
2152 | uint8_t type, sub_type; | |
d62a17ae | 2153 | struct ecommunity_val *eval; |
2154 | struct ecommunity_val eval_tmp; | |
2155 | struct irt_node *irt; | |
2156 | ||
2157 | /* Only deal with RTs */ | |
2158 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2159 | eval = (struct ecommunity_val *)(ecom->val | |
2160 | + (i * ECOMMUNITY_SIZE)); | |
2161 | type = *pnt++; | |
2162 | sub_type = *pnt++; | |
2163 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2164 | continue; | |
2165 | ||
2166 | /* See if this RT matches specified VNIs import RTs */ | |
2167 | irt = lookup_import_rt(bgp, eval); | |
2168 | if (irt && irt->vnis) | |
2169 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2170 | return 1; | |
2171 | ||
2172 | /* Also check for non-exact match. In this, we mask out the AS | |
2173 | * and | |
2174 | * only check on the local-admin sub-field. This is to | |
2175 | * facilitate using | |
2176 | * VNI as the RT for EBGP peering too. | |
2177 | */ | |
2178 | irt = NULL; | |
2179 | if (type == ECOMMUNITY_ENCODE_AS | |
2180 | || type == ECOMMUNITY_ENCODE_AS4 | |
2181 | || type == ECOMMUNITY_ENCODE_IP) { | |
2182 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2183 | mask_ecom_global_admin(&eval_tmp, eval); | |
2184 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2185 | } | |
2186 | if (irt && irt->vnis) | |
2187 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2188 | return 1; | |
2189 | } | |
2190 | ||
2191 | return 0; | |
128ea8ab | 2192 | } |
2193 | ||
5ba238b7 MK |
2194 | /* |
2195 | * Install or uninstall mac-ip routes are appropriate for this | |
2196 | * particular VRF. | |
2197 | */ | |
996c9314 | 2198 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2199 | { |
2200 | afi_t afi; | |
2201 | safi_t safi; | |
2202 | struct bgp_node *rd_rn, *rn; | |
2203 | struct bgp_table *table; | |
2204 | struct bgp_info *ri; | |
2205 | int ret; | |
2206 | char buf[PREFIX_STRLEN]; | |
2207 | struct bgp *bgp_def = NULL; | |
2208 | ||
2209 | afi = AFI_L2VPN; | |
2210 | safi = SAFI_EVPN; | |
2211 | bgp_def = bgp_get_default(); | |
2212 | if (!bgp_def) | |
2213 | return -1; | |
2214 | ||
2215 | /* Walk entire global routing table and evaluate routes which could be | |
2216 | * imported into this VRF. Note that we need to loop through all global | |
2217 | * routes to determine which route matches the import rt on vrf | |
2218 | */ | |
2219 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2220 | rd_rn = bgp_route_next(rd_rn)) { | |
2221 | table = (struct bgp_table *)(rd_rn->info); | |
2222 | if (!table) | |
2223 | continue; | |
2224 | ||
2225 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2226 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2227 | ||
1eb88002 | 2228 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2229 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2230 | || evp->prefix.route_type | |
2231 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2232 | continue; |
2233 | ||
1eb88002 | 2234 | /* if not a mac+ip route skip this route */ |
996c9314 LB |
2235 | if (!(IS_EVPN_PREFIX_IPADDR_V4(evp) |
2236 | || IS_EVPN_PREFIX_IPADDR_V6(evp))) | |
1eb88002 MK |
2237 | continue; |
2238 | ||
5ba238b7 MK |
2239 | for (ri = rn->info; ri; ri = ri->next) { |
2240 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2241 | * this VRF. |
2242 | */ | |
5ba238b7 MK |
2243 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2244 | && ri->type == ZEBRA_ROUTE_BGP | |
2245 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2246 | continue; | |
2247 | ||
2248 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2249 | if (install) | |
996c9314 | 2250 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2251 | bgp_vrf, evp, ri); |
2252 | else | |
996c9314 | 2253 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2254 | bgp_vrf, evp, ri); |
2255 | ||
2256 | if (ret) { | |
2257 | zlog_err( | |
2258 | "Failed to %s EVPN %s route in VRF %s", | |
2259 | install ? "install" | |
2260 | : "uninstall", | |
2261 | prefix2str(evp, buf, | |
2262 | sizeof(buf)), | |
996c9314 LB |
2263 | vrf_id_to_name( |
2264 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2265 | return ret; |
2266 | } | |
2267 | } | |
2268 | } | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | return 0; | |
2273 | } | |
2274 | ||
128ea8ab | 2275 | /* |
2276 | * Install or uninstall routes of specified type that are appropriate for this | |
2277 | * particular VNI. | |
2278 | */ | |
d62a17ae | 2279 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2280 | struct bgpevpn *vpn, | |
2281 | bgp_evpn_route_type rtype, | |
2282 | int install) | |
2283 | { | |
0291c246 MK |
2284 | afi_t afi; |
2285 | safi_t safi; | |
2286 | struct bgp_node *rd_rn, *rn; | |
2287 | struct bgp_table *table; | |
2288 | struct bgp_info *ri; | |
2289 | int ret; | |
d62a17ae | 2290 | |
2291 | afi = AFI_L2VPN; | |
2292 | safi = SAFI_EVPN; | |
2293 | ||
2294 | /* Walk entire global routing table and evaluate routes which could be | |
2295 | * imported into this VPN. Note that we cannot just look at the routes | |
2296 | * for | |
2297 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2298 | * RD. | |
2299 | */ | |
2300 | /* EVPN routes are a 2-level table. */ | |
2301 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2302 | rd_rn = bgp_route_next(rd_rn)) { | |
2303 | table = (struct bgp_table *)(rd_rn->info); | |
2304 | if (!table) | |
2305 | continue; | |
2306 | ||
2307 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2308 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2309 | ||
2310 | if (evp->prefix.route_type != rtype) | |
2311 | continue; | |
2312 | ||
2313 | for (ri = rn->info; ri; ri = ri->next) { | |
2314 | /* Consider "valid" remote routes applicable for | |
2315 | * this VNI. */ | |
2316 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2317 | && ri->type == ZEBRA_ROUTE_BGP | |
2318 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2319 | continue; | |
2320 | ||
2321 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2322 | if (install) | |
2323 | ret = install_evpn_route_entry( | |
60466a63 | 2324 | bgp, vpn, evp, ri); |
d62a17ae | 2325 | else |
2326 | ret = uninstall_evpn_route_entry( | |
2327 | bgp, vpn, evp, ri); | |
2328 | ||
2329 | if (ret) { | |
2330 | zlog_err( | |
2331 | "%u: Failed to %s EVPN %s route in VNI %u", | |
2332 | bgp->vrf_id, | |
2333 | install ? "install" | |
2334 | : "uninstall", | |
2335 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
2336 | ? "MACIP" | |
2337 | : "IMET", | |
2338 | vpn->vni); | |
2339 | return ret; | |
2340 | } | |
2341 | } | |
2342 | } | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | return 0; | |
128ea8ab | 2347 | } |
2348 | ||
5ba238b7 | 2349 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 2350 | * is invoked upon l3vni-add or l3vni import rt change |
2351 | */ | |
5ba238b7 MK |
2352 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
2353 | { | |
2354 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
2355 | return 0; | |
2356 | } | |
2357 | ||
128ea8ab | 2358 | /* |
2359 | * Install any existing remote routes applicable for this VNI into its | |
2360 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
2361 | * RT is changed. | |
2362 | */ | |
d62a17ae | 2363 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2364 | { |
d62a17ae | 2365 | int ret; |
128ea8ab | 2366 | |
d62a17ae | 2367 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
2368 | * for this VNI. | |
2369 | */ | |
2370 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
2371 | 1); | |
2372 | if (ret) | |
2373 | return ret; | |
128ea8ab | 2374 | |
d62a17ae | 2375 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
2376 | 1); | |
128ea8ab | 2377 | } |
2378 | ||
5ba238b7 MK |
2379 | /* uninstall routes from l3vni vrf. */ |
2380 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
2381 | { | |
2382 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
2383 | return 0; | |
2384 | } | |
2385 | ||
90e60aa7 | 2386 | /* |
2387 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
2388 | * this is invoked is upon an import RT change. | |
2389 | */ | |
d62a17ae | 2390 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2391 | { |
d62a17ae | 2392 | int ret; |
90e60aa7 | 2393 | |
d62a17ae | 2394 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
2395 | * applicable | |
2396 | * for this VNI. | |
2397 | */ | |
2398 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
2399 | 0); | |
2400 | if (ret) | |
2401 | return ret; | |
90e60aa7 | 2402 | |
d62a17ae | 2403 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
2404 | 0); | |
90e60aa7 | 2405 | } |
2406 | ||
d3135ba3 | 2407 | /* |
2408 | * Install or uninstall route in matching VRFs (list). | |
2409 | */ | |
2410 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
2411 | safi_t safi, struct prefix_evpn *evp, | |
2412 | struct bgp_info *ri, | |
2413 | struct list *vrfs, int install) | |
2414 | { | |
2415 | char buf[PREFIX2STR_BUFFER]; | |
2416 | struct bgp *bgp_vrf; | |
2417 | struct listnode *node, *nnode; | |
2418 | ||
90264d64 | 2419 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
2420 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2421 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 2422 | return 0; |
2423 | ||
90264d64 | 2424 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 LB |
2425 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
2426 | && !(IS_EVPN_PREFIX_IPADDR_V4(evp) | |
2427 | || IS_EVPN_PREFIX_IPADDR_V6(evp))) | |
30a30f57 MK |
2428 | return 0; |
2429 | ||
d3135ba3 | 2430 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
2431 | int ret; | |
2432 | ||
2433 | if (install) | |
996c9314 | 2434 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 2435 | else |
996c9314 LB |
2436 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
2437 | ri); | |
d3135ba3 | 2438 | |
2439 | if (ret) { | |
2440 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
2441 | bgp_def->vrf_id, | |
2442 | install ? "install" : "uninstall", | |
2443 | prefix2str(evp, buf, sizeof(buf)), | |
2444 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2445 | return ret; | |
2446 | } | |
2447 | } | |
2448 | ||
2449 | return 0; | |
2450 | } | |
2451 | ||
128ea8ab | 2452 | /* |
2453 | * Install or uninstall route in matching VNIs (list). | |
2454 | */ | |
d62a17ae | 2455 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
2456 | safi_t safi, struct prefix_evpn *evp, | |
2457 | struct bgp_info *ri, | |
2458 | struct list *vnis, int install) | |
128ea8ab | 2459 | { |
d62a17ae | 2460 | struct bgpevpn *vpn; |
2461 | struct listnode *node, *nnode; | |
128ea8ab | 2462 | |
d62a17ae | 2463 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
2464 | int ret; | |
128ea8ab | 2465 | |
d62a17ae | 2466 | if (!is_vni_live(vpn)) |
2467 | continue; | |
128ea8ab | 2468 | |
d62a17ae | 2469 | if (install) |
2470 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
2471 | else | |
2472 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 2473 | |
d62a17ae | 2474 | if (ret) { |
2475 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
2476 | bgp->vrf_id, install ? "install" : "uninstall", | |
2477 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2478 | ? "MACIP" | |
2479 | : "IMET", | |
2480 | vpn->vni); | |
2481 | return ret; | |
2482 | } | |
2483 | } | |
128ea8ab | 2484 | |
d62a17ae | 2485 | return 0; |
128ea8ab | 2486 | } |
2487 | ||
2488 | /* | |
2489 | * Install or uninstall route for appropriate VNIs. | |
2490 | */ | |
d62a17ae | 2491 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
2492 | struct prefix *p, struct bgp_info *ri, | |
2493 | int import) | |
2494 | { | |
2495 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
2496 | struct attr *attr = ri->attr; | |
2497 | struct ecommunity *ecom; | |
2498 | int i; | |
2499 | ||
2500 | assert(attr); | |
2501 | ||
90264d64 | 2502 | /* Only type-2 and type-3 and type-5 are supported currently */ |
d62a17ae | 2503 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 MK |
2504 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
2505 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d62a17ae | 2506 | return 0; |
2507 | ||
2508 | /* If we don't have Route Target, nothing much to do. */ | |
2509 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2510 | return 0; | |
2511 | ||
2512 | ecom = attr->ecommunity; | |
2513 | if (!ecom || !ecom->size) | |
2514 | return -1; | |
2515 | ||
90264d64 MK |
2516 | /* For each extended community RT, see which VNIs/VRFs match and import |
2517 | * the route into matching VNIs/VRFs. | |
d62a17ae | 2518 | */ |
2519 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2520 | uint8_t *pnt; |
2521 | uint8_t type, sub_type; | |
d62a17ae | 2522 | struct ecommunity_val *eval; |
2523 | struct ecommunity_val eval_tmp; | |
996c9314 | 2524 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 2525 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
d62a17ae | 2526 | |
2527 | /* Only deal with RTs */ | |
2528 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2529 | eval = (struct ecommunity_val *)(ecom->val | |
2530 | + (i * ECOMMUNITY_SIZE)); | |
2531 | type = *pnt++; | |
2532 | sub_type = *pnt++; | |
2533 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2534 | continue; | |
2535 | ||
90264d64 | 2536 | /* Import route into matching l2-vnis (type-2/type-3 routes go |
523cafc4 | 2537 | * into l2vni table) |
2538 | */ | |
d62a17ae | 2539 | irt = lookup_import_rt(bgp, eval); |
2540 | if (irt && irt->vnis) | |
2541 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2542 | irt->vnis, import); | |
2543 | ||
90264d64 | 2544 | /* Import route into matching l3-vnis (type-2/type-5 routes go |
523cafc4 | 2545 | * into l3vni/vrf table) |
2546 | */ | |
d3135ba3 | 2547 | vrf_irt = lookup_vrf_import_rt(eval); |
2548 | if (vrf_irt && vrf_irt->vrfs) | |
2549 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri, | |
2550 | vrf_irt->vrfs, import); | |
2551 | ||
90264d64 MK |
2552 | /* Also check for non-exact match. In this, |
2553 | * we mask out the AS and | |
2554 | * only check on the local-admin sub-field. | |
2555 | * This is to facilitate using | |
d62a17ae | 2556 | * VNI as the RT for EBGP peering too. |
2557 | */ | |
2558 | irt = NULL; | |
d3135ba3 | 2559 | vrf_irt = NULL; |
d62a17ae | 2560 | if (type == ECOMMUNITY_ENCODE_AS |
2561 | || type == ECOMMUNITY_ENCODE_AS4 | |
2562 | || type == ECOMMUNITY_ENCODE_IP) { | |
2563 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2564 | mask_ecom_global_admin(&eval_tmp, eval); | |
2565 | irt = lookup_import_rt(bgp, &eval_tmp); | |
d3135ba3 | 2566 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); |
d62a17ae | 2567 | } |
2568 | if (irt && irt->vnis) | |
2569 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2570 | irt->vnis, import); | |
d3135ba3 | 2571 | if (vrf_irt && vrf_irt->vrfs) |
996c9314 LB |
2572 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri, |
2573 | vrf_irt->vrfs, import); | |
d62a17ae | 2574 | } |
2575 | ||
2576 | return 0; | |
128ea8ab | 2577 | } |
2578 | ||
80b140af MK |
2579 | /* delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 |
2580 | * routes */ | |
2581 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) | |
2582 | { | |
2583 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
2584 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
2585 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
2586 | |
2587 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
2588 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
2589 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
2590 | } |
2591 | ||
2592 | /* update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
2593 | * routes */ | |
2594 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) | |
2595 | { | |
2596 | /* update all ipv4 routes */ | |
fdf19f06 MK |
2597 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
2598 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
2599 | |
2600 | /* update all ipv6 routes */ | |
fdf19f06 MK |
2601 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
2602 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
2603 | } |
2604 | ||
676f83b9 | 2605 | /* |
2606 | * update and advertise local routes for a VRF as type-5 routes. | |
2607 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
2608 | * done in the global route table using the routes which already exist in the | |
2609 | * VRF routing table | |
2610 | */ | |
80b140af | 2611 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2612 | { |
80b140af MK |
2613 | /* skip if the RD is configured */ |
2614 | if (is_vrf_rd_configured(bgp_vrf)) | |
2615 | return; | |
2616 | ||
2617 | /* derive the RD for the VRF based on new router-id */ | |
2618 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
2619 | ||
2620 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
2621 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 2622 | } |
2623 | ||
2624 | /* | |
2625 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
2626 | * This is invoked upon VRF RD change. The processing is done only from global | |
2627 | * table. | |
2628 | */ | |
80b140af | 2629 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2630 | { |
80b140af MK |
2631 | /* skip if the RD is configured */ |
2632 | if (is_vrf_rd_configured(bgp_vrf)) | |
2633 | return; | |
2634 | ||
2635 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
2636 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 2637 | } |
2638 | ||
90e60aa7 | 2639 | /* |
2640 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
2641 | * change. Note that the processing is done only on the global route table | |
2642 | * using routes that already exist in the per-VNI table. | |
2643 | */ | |
d62a17ae | 2644 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2645 | { | |
2646 | struct prefix_evpn p; | |
2647 | struct bgp_node *rn, *global_rn; | |
2648 | struct bgp_info *ri, *global_ri; | |
2649 | struct attr *attr; | |
2650 | afi_t afi = AFI_L2VPN; | |
2651 | safi_t safi = SAFI_EVPN; | |
2652 | ||
2653 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
2654 | * attributes to create and advertise the type-3 route for this VNI | |
2655 | * in the global table. | |
2656 | */ | |
2657 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2658 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
2659 | if (!rn) /* unexpected */ | |
2660 | return 0; | |
2661 | for (ri = rn->info; ri; ri = ri->next) | |
2662 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
2663 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2664 | break; | |
2665 | if (!ri) /* unexpected */ | |
2666 | return 0; | |
2667 | attr = ri->attr; | |
2668 | ||
2669 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2670 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
2671 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
2672 | 0); | |
d62a17ae | 2673 | |
2674 | /* Schedule for processing and unlock node. */ | |
2675 | bgp_process(bgp, global_rn, afi, safi); | |
2676 | bgp_unlock_node(global_rn); | |
2677 | ||
2678 | /* Now, walk this VNI's route table and use the route and its attribute | |
2679 | * to create and schedule route in global table. | |
2680 | */ | |
2681 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2682 | rn = bgp_route_next(rn)) { | |
2683 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2684 | ||
2685 | /* Identify MAC-IP local routes. */ | |
2686 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2687 | continue; | |
2688 | ||
2689 | for (ri = rn->info; ri; ri = ri->next) | |
2690 | if (ri->peer == bgp->peer_self | |
2691 | && ri->type == ZEBRA_ROUTE_BGP | |
2692 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2693 | break; | |
2694 | if (!ri) | |
2695 | continue; | |
2696 | ||
2697 | /* Create route in global routing table using this route entry's | |
2698 | * attribute. | |
2699 | */ | |
2700 | attr = ri->attr; | |
2701 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2702 | (struct prefix *)evp, &vpn->prd); | |
2703 | assert(global_rn); | |
2704 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 2705 | 0, &global_ri, 0); |
d62a17ae | 2706 | |
2707 | /* Schedule for processing and unlock node. */ | |
2708 | bgp_process(bgp, global_rn, afi, safi); | |
2709 | bgp_unlock_node(global_rn); | |
2710 | } | |
2711 | ||
2712 | return 0; | |
90e60aa7 | 2713 | } |
2714 | ||
2715 | /* | |
2716 | * Delete (and withdraw) local routes for a VNI - only from the global | |
2717 | * table. Invoked upon router-id change. | |
2718 | */ | |
d62a17ae | 2719 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2720 | { |
d62a17ae | 2721 | int ret; |
2722 | struct prefix_evpn p; | |
2723 | struct bgp_node *global_rn; | |
2724 | struct bgp_info *ri; | |
2725 | afi_t afi = AFI_L2VPN; | |
2726 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 2727 | |
d62a17ae | 2728 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2729 | * for this VNI - from the global table. | |
2730 | */ | |
2731 | ret = delete_global_type2_routes(bgp, vpn); | |
2732 | if (ret) | |
2733 | return ret; | |
90e60aa7 | 2734 | |
d62a17ae | 2735 | /* Remove type-3 route for this VNI from global table. */ |
2736 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2737 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2738 | (struct prefix *)&p, &vpn->prd); | |
2739 | if (global_rn) { | |
2740 | /* Delete route entry in the global EVPN table. */ | |
2741 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
90e60aa7 | 2742 | |
d62a17ae | 2743 | /* Schedule for processing - withdraws to peers happen from |
2744 | * this table. | |
2745 | */ | |
2746 | if (ri) | |
2747 | bgp_process(bgp, global_rn, afi, safi); | |
2748 | bgp_unlock_node(global_rn); | |
2749 | } | |
90e60aa7 | 2750 | |
d62a17ae | 2751 | return 0; |
90e60aa7 | 2752 | } |
2753 | ||
2d48ee25 | 2754 | /* |
2755 | * Handle router-id change. Update and advertise local routes corresponding | |
2756 | * to this VNI from peers. Note that this is invoked after updating the | |
2757 | * router-id. The routes in the per-VNI table are used to create routes in | |
2758 | * the global table and schedule them. | |
2759 | */ | |
d62a17ae | 2760 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2761 | { |
d62a17ae | 2762 | struct bgpevpn *vpn; |
2d48ee25 | 2763 | |
d62a17ae | 2764 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2765 | |
d62a17ae | 2766 | if (!vpn) { |
2767 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2768 | return; | |
2769 | } | |
2d48ee25 | 2770 | |
d62a17ae | 2771 | /* Skip VNIs with configured RD. */ |
2772 | if (is_rd_configured(vpn)) | |
2773 | return; | |
2d48ee25 | 2774 | |
d62a17ae | 2775 | bgp_evpn_derive_auto_rd(bgp, vpn); |
2776 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 2777 | } |
2778 | ||
2779 | /* | |
2780 | * Handle router-id change. Delete and withdraw local routes corresponding | |
2781 | * to this VNI from peers. Note that this is invoked prior to updating | |
2782 | * the router-id and is done only on the global route table, the routes | |
2783 | * are needed in the per-VNI table to re-advertise with new router id. | |
2784 | */ | |
d62a17ae | 2785 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2786 | { |
d62a17ae | 2787 | struct bgpevpn *vpn; |
2d48ee25 | 2788 | |
d62a17ae | 2789 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2790 | |
d62a17ae | 2791 | if (!vpn) { |
2792 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2793 | return; | |
2794 | } | |
2d48ee25 | 2795 | |
d62a17ae | 2796 | /* Skip VNIs with configured RD. */ |
2797 | if (is_rd_configured(vpn)) | |
2798 | return; | |
2d48ee25 | 2799 | |
d62a17ae | 2800 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 2801 | } |
2802 | ||
128ea8ab | 2803 | /* |
2804 | * Process received EVPN type-2 route (advertise or withdraw). | |
2805 | */ | |
d62a17ae | 2806 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2807 | struct attr *attr, uint8_t *pfx, int psize, |
2808 | uint32_t addpath_id) | |
d62a17ae | 2809 | { |
2810 | struct prefix_rd prd; | |
2811 | struct prefix_evpn p; | |
554cd77a | 2812 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
2813 | uint8_t ipaddr_len; |
2814 | uint8_t macaddr_len; | |
b57ba6d2 | 2815 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 2816 | uint32_t num_labels = 0; |
554cd77a | 2817 | uint32_t eth_tag; |
d62a17ae | 2818 | int ret; |
2819 | ||
2820 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
2821 | * additional 3 bytes if there is a second label (VNI): | |
2822 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
2823 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
2824 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
2825 | */ | |
2826 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
2827 | && psize != 40 && psize != 52) { | |
2828 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
2829 | peer->bgp->vrf_id, peer->host, psize); | |
2830 | return -1; | |
2831 | } | |
2832 | ||
554cd77a VB |
2833 | memset(&evpn, 0, sizeof(evpn)); |
2834 | ||
d62a17ae | 2835 | /* Make prefix_rd */ |
2836 | prd.family = AF_UNSPEC; | |
2837 | prd.prefixlen = 64; | |
2838 | memcpy(&prd.val, pfx, 8); | |
2839 | pfx += 8; | |
2840 | ||
2841 | /* Make EVPN prefix. */ | |
2842 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2843 | p.family = AF_EVPN; |
d62a17ae | 2844 | p.prefixlen = EVPN_TYPE_2_ROUTE_PREFIXLEN; |
2845 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; | |
2846 | ||
554cd77a VB |
2847 | /* Copy Ethernet Seg Identifier */ |
2848 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
2849 | pfx += ESI_LEN; | |
d62a17ae | 2850 | |
554cd77a VB |
2851 | /* Copy Ethernet Tag */ |
2852 | memcpy(ð_tag, pfx, 4); | |
2853 | p.prefix.eth_tag = ntohl(eth_tag); | |
d62a17ae | 2854 | pfx += 4; |
2855 | ||
2856 | /* Get the MAC Addr len */ | |
2857 | macaddr_len = *pfx++; | |
2858 | ||
2859 | /* Get the MAC Addr */ | |
28328ea9 DS |
2860 | if (macaddr_len == (ETH_ALEN * 8)) { |
2861 | memcpy(&p.prefix.mac.octet, pfx, ETH_ALEN); | |
2862 | pfx += ETH_ALEN; | |
d62a17ae | 2863 | } else { |
2864 | zlog_err( | |
2865 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
2866 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
2867 | return -1; | |
2868 | } | |
2869 | ||
2870 | ||
2871 | /* Get the IP. */ | |
2872 | ipaddr_len = *pfx++; | |
2873 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
2874 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
2875 | zlog_err( | |
2876 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
2877 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2878 | return -1; | |
2879 | } | |
2880 | ||
2881 | if (ipaddr_len) { | |
2882 | ipaddr_len /= 8; /* Convert to bytes. */ | |
2883 | p.prefix.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) | |
2884 | ? IPADDR_V4 | |
2885 | : IPADDR_V6; | |
2886 | memcpy(&p.prefix.ip.ip.addr, pfx, ipaddr_len); | |
2887 | } | |
2888 | pfx += ipaddr_len; | |
2889 | ||
b57ba6d2 MK |
2890 | /* Get the VNI(s). Stored as bytes here. */ |
2891 | num_labels++; | |
2892 | memset(label, 0, sizeof(label)); | |
2893 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 2894 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
2895 | psize -= (33 + ipaddr_len); |
2896 | /* Do we have a second VNI? */ | |
2897 | if (psize) { | |
2898 | num_labels++; | |
2899 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 2900 | /* |
2901 | * If in future, we are required to access additional fields, | |
996c9314 LB |
2902 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
2903 | * the next field | |
6b11bd8d | 2904 | */ |
b57ba6d2 | 2905 | } |
d62a17ae | 2906 | |
2907 | /* Process the route. */ | |
2908 | if (attr) | |
2909 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2910 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 2911 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 2912 | else |
2913 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2914 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 2915 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 2916 | return ret; |
128ea8ab | 2917 | } |
2918 | ||
2919 | /* | |
2920 | * Process received EVPN type-3 route (advertise or withdraw). | |
2921 | */ | |
d62a17ae | 2922 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2923 | struct attr *attr, uint8_t *pfx, int psize, |
2924 | uint32_t addpath_id) | |
d62a17ae | 2925 | { |
2926 | struct prefix_rd prd; | |
2927 | struct prefix_evpn p; | |
d7c0a89a | 2928 | uint8_t ipaddr_len; |
554cd77a | 2929 | uint32_t eth_tag; |
d62a17ae | 2930 | int ret; |
2931 | ||
2932 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
2933 | * IP len (1) and IP (4 or 16). | |
2934 | */ | |
2935 | if (psize != 17 && psize != 29) { | |
2936 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
2937 | peer->bgp->vrf_id, peer->host, psize); | |
2938 | return -1; | |
2939 | } | |
2940 | ||
7fd077aa | 2941 | /* If PMSI is present, log if it is anything other than IR. |
2942 | * Note: We just simply ignore the values as it is not clear if | |
2943 | * doing anything else is better. | |
2944 | */ | |
2945 | if (attr && | |
2946 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2947 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
d0be47e8 | 2948 | zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
7fd077aa | 2949 | peer->bgp->vrf_id, peer->host, |
2950 | attr->pmsi_tnl_type); | |
2951 | } | |
2952 | } | |
2953 | ||
d62a17ae | 2954 | /* Make prefix_rd */ |
2955 | prd.family = AF_UNSPEC; | |
2956 | prd.prefixlen = 64; | |
2957 | memcpy(&prd.val, pfx, 8); | |
2958 | pfx += 8; | |
2959 | ||
2960 | /* Make EVPN prefix. */ | |
2961 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2962 | p.family = AF_EVPN; |
d62a17ae | 2963 | p.prefixlen = EVPN_TYPE_3_ROUTE_PREFIXLEN; |
2964 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; | |
2965 | ||
554cd77a VB |
2966 | /* Copy Ethernet Tag */ |
2967 | memcpy(ð_tag, pfx, 4); | |
2968 | p.prefix.eth_tag = ntohl(eth_tag); | |
d62a17ae | 2969 | pfx += 4; |
2970 | ||
2971 | /* Get the IP. */ | |
2972 | ipaddr_len = *pfx++; | |
2973 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
2974 | p.prefix.ip.ipa_type = IPADDR_V4; | |
2975 | memcpy(&p.prefix.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
2976 | } else { | |
2977 | zlog_err( | |
2978 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
2979 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2980 | return -1; | |
2981 | } | |
2982 | ||
2983 | /* Process the route. */ | |
2984 | if (attr) | |
2985 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2986 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 2987 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 2988 | else |
2989 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2990 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 2991 | &prd, NULL, 0, NULL); |
d62a17ae | 2992 | return ret; |
128ea8ab | 2993 | } |
2994 | ||
2995 | /* | |
2996 | * Process received EVPN type-5 route (advertise or withdraw). | |
2997 | */ | |
d62a17ae | 2998 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2999 | struct attr *attr, uint8_t *pfx, int psize, |
3000 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3001 | { |
3002 | struct prefix_rd prd; | |
3003 | struct prefix_evpn p; | |
3004 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3005 | uint8_t ippfx_len; |
3006 | uint32_t eth_tag; | |
b57ba6d2 | 3007 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3008 | int ret; |
3009 | ||
3010 | /* Type-5 route should be 34 or 58 bytes: | |
3011 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3012 | * GW (4 or 16) and VNI (3). | |
3013 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3014 | */ | |
3015 | if (psize != 34 && psize != 58) { | |
3016 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
3017 | peer->bgp->vrf_id, peer->host, psize); | |
3018 | return -1; | |
3019 | } | |
3020 | ||
3021 | /* Make prefix_rd */ | |
3022 | prd.family = AF_UNSPEC; | |
3023 | prd.prefixlen = 64; | |
3024 | memcpy(&prd.val, pfx, 8); | |
3025 | pfx += 8; | |
3026 | ||
3027 | /* Make EVPN prefix. */ | |
3028 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3029 | p.family = AF_EVPN; |
e9fc2840 | 3030 | p.prefixlen = EVPN_TYPE_5_ROUTE_PREFIXLEN; |
d62a17ae | 3031 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3032 | ||
3033 | /* Additional information outside of prefix - ESI and GW IP */ | |
3034 | memset(&evpn, 0, sizeof(evpn)); | |
3035 | ||
3036 | /* Fetch ESI */ | |
3037 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3038 | pfx += 10; | |
3039 | ||
3040 | /* Fetch Ethernet Tag. */ | |
3041 | memcpy(ð_tag, pfx, 4); | |
3042 | p.prefix.eth_tag = ntohl(eth_tag); | |
3043 | pfx += 4; | |
3044 | ||
3045 | /* Fetch IP prefix length. */ | |
3046 | ippfx_len = *pfx++; | |
3047 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
3048 | zlog_err( | |
3049 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
3050 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3051 | return -1; | |
3052 | } | |
3053 | p.prefix.ip_prefix_length = ippfx_len; | |
3054 | ||
3055 | /* Determine IPv4 or IPv6 prefix */ | |
3056 | /* Since the address and GW are from the same family, this just becomes | |
3057 | * a simple check on the total size. | |
3058 | */ | |
3059 | if (psize == 34) { | |
3060 | SET_IPADDR_V4(&p.prefix.ip); | |
3061 | memcpy(&p.prefix.ip.ipaddr_v4, pfx, 4); | |
3062 | pfx += 4; | |
3063 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3064 | pfx += 4; | |
d62a17ae | 3065 | } else { |
3066 | SET_IPADDR_V6(&p.prefix.ip); | |
3067 | memcpy(&p.prefix.ip.ipaddr_v6, pfx, 16); | |
3068 | pfx += 16; | |
3069 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3070 | pfx += 16; | |
d62a17ae | 3071 | } |
3072 | ||
b57ba6d2 MK |
3073 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3074 | memset(&label, 0, sizeof(label)); | |
3075 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3076 | |
3077 | /* | |
3078 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3079 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3080 | * field | |
6b11bd8d | 3081 | */ |
d62a17ae | 3082 | |
3083 | /* Process the route. */ | |
3084 | if (!withdraw) | |
3085 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3086 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3087 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3088 | else |
3089 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3090 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3091 | &prd, &label, 1, &evpn); |
d62a17ae | 3092 | |
3093 | return ret; | |
3094 | } | |
3095 | ||
3096 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3097 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3098 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3099 | { |
3100 | int len; | |
3101 | char temp[16]; | |
3102 | struct evpn_addr *p_evpn_p; | |
3103 | ||
3104 | memset(&temp, 0, 16); | |
b03b8898 | 3105 | if (p->family != AF_EVPN) |
d62a17ae | 3106 | return; |
3107 | p_evpn_p = &(p->u.prefix_evpn); | |
3108 | ||
e9fc2840 | 3109 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3110 | IP and GW-IP have to be both ipv4 or ipv6 |
3111 | */ | |
d62a17ae | 3112 | if (IS_IPADDR_V4(&p_evpn_p->ip)) |
e9fc2840 | 3113 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3114 | else |
e9fc2840 | 3115 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3116 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3117 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3118 | stream_put(s, prd->val, 8); | |
0af35d90 | 3119 | if (attr) |
d62a17ae | 3120 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3121 | else | |
3122 | stream_put(s, &temp, 10); | |
3123 | stream_putl(s, p_evpn_p->eth_tag); | |
3124 | stream_putc(s, p_evpn_p->ip_prefix_length); | |
3125 | if (IS_IPADDR_V4(&p_evpn_p->ip)) | |
3126 | stream_put_ipv4(s, p_evpn_p->ip.ipaddr_v4.s_addr); | |
3127 | else | |
3128 | stream_put(s, &p_evpn_p->ip.ipaddr_v6, 16); | |
0af35d90 | 3129 | if (attr) { |
d62a17ae | 3130 | if (IS_IPADDR_V4(&p_evpn_p->ip)) |
3131 | stream_put_ipv4(s, | |
3132 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3133 | else | |
3134 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3135 | } else { | |
3136 | if (IS_IPADDR_V4(&p_evpn_p->ip)) | |
3137 | stream_put_ipv4(s, 0); | |
3138 | else | |
3139 | stream_put(s, &temp, 16); | |
3140 | } | |
3141 | ||
b57ba6d2 | 3142 | if (num_labels) |
d62a17ae | 3143 | stream_put(s, label, 3); |
3144 | else | |
3145 | stream_put3(s, 0); | |
128ea8ab | 3146 | } |
3147 | ||
3148 | /* | |
3149 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3150 | */ | |
d62a17ae | 3151 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3152 | { |
d62a17ae | 3153 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3154 | |
d62a17ae | 3155 | /* Remove EVPN routes and schedule for processing. */ |
3156 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3157 | |
d62a17ae | 3158 | /* Clear "live" flag and see if hash needs to be freed. */ |
3159 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3160 | if (!is_vni_configured(vpn)) | |
3161 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3162 | } |
3163 | ||
3164 | /* | |
3165 | * Free a VNI entry; iterator function called during cleanup. | |
3166 | */ | |
d62a17ae | 3167 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3168 | { |
d62a17ae | 3169 | struct bgpevpn *vpn; |
128ea8ab | 3170 | |
d62a17ae | 3171 | vpn = (struct bgpevpn *)backet->data; |
3172 | delete_all_vni_routes(bgp, vpn); | |
3173 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3174 | } |
3175 | ||
c581d8b0 MK |
3176 | /* |
3177 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3178 | */ | |
3179 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3180 | { | |
10ebe1ab MK |
3181 | struct bgp *bgp_def = NULL; |
3182 | ||
c581d8b0 | 3183 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3184 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3185 | ||
3186 | /* Map RT to VRF */ | |
3187 | bgp_def = bgp_get_default(); | |
3188 | if (!bgp_def) | |
3189 | return; | |
3190 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3191 | } |
3192 | ||
3193 | /* | |
3194 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3195 | */ | |
3196 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3197 | { | |
3198 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
3199 | } | |
3200 | ||
3201 | /* | |
3202 | * Derive AUTO export RT for BGP VRF - L3VNI | |
3203 | */ | |
3204 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
3205 | { | |
3206 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3207 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3208 | } | |
3209 | ||
3210 | /* | |
3211 | * Delete AUTO export RT from BGP VRF - L3VNI | |
3212 | */ | |
3213 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
3214 | { | |
3215 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3216 | } | |
128ea8ab | 3217 | |
f1f8b53c MK |
3218 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
3219 | { | |
3220 | struct bgp *bgp_def = NULL; | |
3221 | struct listnode *node = NULL; | |
3222 | struct bgpevpn *vpn = NULL; | |
3223 | ||
3224 | bgp_def = bgp_get_default(); | |
3225 | if (!bgp_def) | |
3226 | return; | |
3227 | ||
4992b4ae MK |
3228 | /* update all type-5 routes */ |
3229 | update_advertise_vrf_routes(bgp_vrf); | |
3230 | ||
3231 | /* update all type-2 routes */ | |
f1f8b53c MK |
3232 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
3233 | update_routes_for_vni(bgp_def, vpn); | |
3234 | } | |
3235 | ||
128ea8ab | 3236 | /* |
3237 | * Public functions. | |
3238 | */ | |
3239 | ||
5424b7ba | 3240 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 3241 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
3242 | afi_t afi, safi_t safi) |
3243 | { | |
3244 | int ret = 0; | |
3245 | struct prefix_evpn evp; | |
3246 | char buf[PREFIX_STRLEN]; | |
3247 | ||
31310b25 | 3248 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
3249 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
3250 | if (ret) { | |
3251 | zlog_err( | |
996c9314 LB |
3252 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
3253 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
3254 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
3255 | } |
3256 | } | |
3257 | ||
342dd0c6 | 3258 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 3259 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 3260 | { |
3261 | struct bgp_table *table = NULL; | |
3262 | struct bgp_node *rn = NULL; | |
25f2ca53 | 3263 | struct bgp_info *ri; |
342dd0c6 | 3264 | |
053905d2 | 3265 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 3266 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
3267 | /* Only care about "selected" routes - non-imported. */ | |
3268 | /* TODO: Support for AddPath for EVPN. */ | |
3269 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
3270 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
3271 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 3272 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
3273 | afi, safi); | |
3274 | break; | |
3275 | } | |
3276 | } | |
3277 | } | |
5424b7ba | 3278 | } |
342dd0c6 | 3279 | |
2f69f6d3 | 3280 | /* |
3281 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
3282 | * to this function correspond to those of the source IP prefix (best | |
3283 | * path in the case of the attr. In the case of a local prefix (when we | |
3284 | * are advertising local subnets), the src_attr will be NULL. | |
3285 | */ | |
31310b25 | 3286 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
3287 | struct attr *src_attr, afi_t afi, |
3288 | safi_t safi) | |
5424b7ba MK |
3289 | { |
3290 | int ret = 0; | |
3291 | struct prefix_evpn evp; | |
3292 | char buf[PREFIX_STRLEN]; | |
7b1bf203 | 3293 | |
31310b25 | 3294 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 3295 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
3296 | if (ret) | |
996c9314 LB |
3297 | zlog_err("%u: Failed to create type-5 route for prefix %s", |
3298 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 3299 | } |
3300 | ||
2f69f6d3 | 3301 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
3302 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
3303 | * advertisement is enabled. | |
3304 | */ | |
996c9314 LB |
3305 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
3306 | safi_t safi) | |
342dd0c6 | 3307 | { |
3308 | struct bgp_table *table = NULL; | |
3309 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 3310 | struct bgp_info *ri; |
342dd0c6 | 3311 | |
053905d2 | 3312 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 3313 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 3314 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 3315 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 3316 | * TODO: Support for AddPath for EVPN. |
3317 | */ | |
3318 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
3319 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
3320 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
3321 | |
3322 | /* apply the route-map */ | |
3323 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
3324 | int ret = 0; | |
3325 | ||
996c9314 LB |
3326 | ret = route_map_apply( |
3327 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
3328 | .map, | |
3329 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
3330 | if (ret == RMAP_DENYMATCH) |
3331 | continue; | |
3332 | } | |
996c9314 LB |
3333 | bgp_evpn_advertise_type5_route( |
3334 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 3335 | break; |
3336 | } | |
3337 | } | |
31310b25 | 3338 | } |
342dd0c6 | 3339 | } |
3340 | ||
996c9314 | 3341 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
3342 | { |
3343 | struct listnode *node, *nnode, *node_to_del; | |
3344 | struct ecommunity *ecom, *ecom_auto; | |
3345 | struct ecommunity_val eval; | |
3346 | ||
3347 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); | |
3348 | ||
3349 | ecom_auto = ecommunity_new(); | |
3350 | ecommunity_add_val(ecom_auto, &eval); | |
3351 | node_to_del = NULL; | |
3352 | ||
3353 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
3354 | if (ecommunity_match(ecom, ecom_auto)) { | |
3355 | ecommunity_free(&ecom); | |
3356 | node_to_del = node; | |
3357 | } | |
3358 | } | |
3359 | ||
3360 | if (node_to_del) | |
3361 | list_delete_node(rtl, node_to_del); | |
3362 | ||
3363 | ecommunity_free(&ecom_auto); | |
3364 | } | |
3365 | ||
3366 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 3367 | struct ecommunity *ecomadd) |
c581d8b0 | 3368 | { |
5ba238b7 MK |
3369 | /* uninstall routes from vrf */ |
3370 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3371 | |
3372 | /* Cleanup the RT to VRF mapping */ | |
3373 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3374 | ||
c581d8b0 MK |
3375 | /* Remove auto generated RT */ |
3376 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
3377 | ||
3378 | /* Add the newly configured RT to RT list */ | |
3379 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
3380 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3381 | ||
10ebe1ab MK |
3382 | /* map VRF to its RTs */ |
3383 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3384 | ||
5ba238b7 MK |
3385 | /* install routes matching the new VRF */ |
3386 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3387 | } |
3388 | ||
3389 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
3390 | struct ecommunity *ecomdel) | |
3391 | { | |
3392 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3393 | struct ecommunity *ecom = NULL; | |
3394 | ||
5ba238b7 MK |
3395 | /* uninstall routes from vrf */ |
3396 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3397 | |
3398 | /* Cleanup the RT to VRF mapping */ | |
3399 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3400 | ||
c581d8b0 MK |
3401 | /* remove the RT from the RT list */ |
3402 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3403 | if (ecommunity_match(ecom, ecomdel)) { | |
3404 | ecommunity_free(&ecom); | |
3405 | node_to_del = node; | |
3406 | break; | |
3407 | } | |
3408 | } | |
3409 | ||
3410 | if (node_to_del) | |
3411 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
3412 | ||
3413 | /* fallback to auto import rt, if this was the last RT */ | |
3414 | if (list_isempty(bgp_vrf->vrf_import_rtl)) { | |
3415 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3416 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
3417 | } | |
3418 | ||
10ebe1ab MK |
3419 | /* map VRFs to its RTs */ |
3420 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3421 | ||
5ba238b7 MK |
3422 | /* install routes matching this new RT */ |
3423 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3424 | } |
3425 | ||
3426 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3427 | struct ecommunity *ecomadd) | |
3428 | { | |
3429 | /* remove auto-generated RT */ | |
3430 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
3431 | ||
3432 | /* Add the new RT to the RT list */ | |
3433 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
3434 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3435 | ||
f1f8b53c | 3436 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
3437 | } |
3438 | ||
3439 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3440 | struct ecommunity *ecomdel) | |
3441 | { | |
3442 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3443 | struct ecommunity *ecom = NULL; | |
3444 | ||
3445 | /* Remove the RT from the RT list */ | |
3446 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
3447 | if (ecommunity_match(ecom, ecomdel)) { | |
3448 | ecommunity_free(&ecom); | |
3449 | node_to_del = node; | |
3450 | break; | |
3451 | } | |
3452 | } | |
3453 | ||
3454 | if (node_to_del) | |
3455 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
3456 | ||
3457 | /* fall back to auto-generated RT if this was the last RT */ | |
877702e7 | 3458 | if (bgp_vrf->vrf_export_rtl && list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
3459 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
3460 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
3461 | } | |
3462 | ||
f1f8b53c | 3463 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
3464 | } |
3465 | ||
2d48ee25 | 3466 | /* |
3467 | * Handle change to BGP router id. This is invoked twice by the change | |
3468 | * handler, first before the router id has been changed and then after | |
3469 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 3470 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 3471 | * will result in the routes being re-advertised. |
3472 | */ | |
d62a17ae | 3473 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 3474 | { |
676f83b9 | 3475 | if (withdraw) { |
3476 | ||
3477 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 3478 | stored in the global table for this vrf |
3479 | */ | |
80b140af | 3480 | withdraw_router_id_vrf(bgp); |
676f83b9 | 3481 | |
3482 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 3483 | * L2-VNIs |
3484 | */ | |
d62a17ae | 3485 | hash_iterate(bgp->vnihash, |
3486 | (void (*)(struct hash_backet *, | |
3487 | void *))withdraw_router_id_vni, | |
3488 | bgp); | |
676f83b9 | 3489 | } else { |
3490 | ||
3491 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 3492 | * RD |
3493 | */ | |
80b140af | 3494 | update_router_id_vrf(bgp); |
676f83b9 | 3495 | |
3496 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 3497 | * new RD |
3498 | */ | |
d62a17ae | 3499 | hash_iterate(bgp->vnihash, |
3500 | (void (*)(struct hash_backet *, | |
3501 | void *))update_router_id_vni, | |
3502 | bgp); | |
676f83b9 | 3503 | } |
2d48ee25 | 3504 | } |
3505 | ||
90e60aa7 | 3506 | /* |
3507 | * Handle change to export RT - update and advertise local routes. | |
3508 | */ | |
d62a17ae | 3509 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3510 | { |
d62a17ae | 3511 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 3512 | } |
3513 | ||
996c9314 | 3514 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 3515 | { |
3516 | if (withdraw) | |
3517 | delete_withdraw_vrf_routes(bgp_vrf); | |
3518 | else | |
3519 | update_advertise_vrf_routes(bgp_vrf); | |
3520 | } | |
3521 | ||
90e60aa7 | 3522 | /* |
3523 | * Handle change to RD. This is invoked twice by the change handler, | |
3524 | * first before the RD has been changed and then after the RD has | |
3525 | * been changed. The first invocation will result in local routes | |
3526 | * of this VNI being deleted and withdrawn and the next will result | |
3527 | * in the routes being re-advertised. | |
3528 | */ | |
d62a17ae | 3529 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
3530 | int withdraw) | |
90e60aa7 | 3531 | { |
d62a17ae | 3532 | if (withdraw) |
3533 | delete_withdraw_vni_routes(bgp, vpn); | |
3534 | else | |
3535 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 3536 | } |
3537 | ||
3538 | /* | |
3539 | * Install routes for this VNI. Invoked upon change to Import RT. | |
3540 | */ | |
d62a17ae | 3541 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3542 | { |
d62a17ae | 3543 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 3544 | } |
3545 | ||
3546 | /* | |
3547 | * Uninstall all routes installed for this VNI. Invoked upon change | |
3548 | * to Import RT. | |
3549 | */ | |
d62a17ae | 3550 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3551 | { |
d62a17ae | 3552 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 3553 | } |
3554 | ||
b16031a2 | 3555 | /* |
b57ba6d2 | 3556 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 3557 | */ |
d7c0a89a | 3558 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 3559 | int len) |
b16031a2 | 3560 | { |
b57ba6d2 | 3561 | vni_t vni1, vni2; |
b16031a2 | 3562 | |
b57ba6d2 MK |
3563 | vni1 = label2vni(label); |
3564 | if (num_labels == 2) { | |
996c9314 | 3565 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
3566 | snprintf(buf, len, "%u/%u", vni1, vni2); |
3567 | } else | |
3568 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 3569 | return buf; |
b16031a2 | 3570 | } |
3571 | ||
9c92b5f7 MK |
3572 | /* |
3573 | * Function to convert evpn route to json format. | |
3574 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3575 | */ | |
57f7feb6 | 3576 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 3577 | { |
b682f6de | 3578 | char buf1[ETHER_ADDR_STRLEN]; |
3579 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 3580 | |
b682f6de | 3581 | if (!json) |
3582 | return; | |
9c92b5f7 | 3583 | |
dff8f48d | 3584 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 3585 | json_object_int_add(json, "routeType", p->prefix.route_type); |
554cd77a | 3586 | json_object_int_add(json, "ethTag", p->prefix.eth_tag); |
57f7feb6 MK |
3587 | json_object_int_add(json, "ipLen", |
3588 | IS_EVPN_PREFIX_IPADDR_V4(p) | |
3589 | ? IPV4_MAX_BITLEN | |
3590 | : IPV6_MAX_BITLEN); | |
b682f6de | 3591 | json_object_string_add(json, "ip", |
57f7feb6 MK |
3592 | inet_ntoa(p->prefix.ip.ipaddr_v4)); |
3593 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
dff8f48d | 3594 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) { |
57f7feb6 MK |
3595 | json_object_int_add(json, "routeType", |
3596 | p->prefix.route_type); | |
554cd77a | 3597 | json_object_int_add(json, "ethTag", p->prefix.eth_tag); |
57f7feb6 MK |
3598 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
3599 | json_object_string_add(json, "mac", | |
3600 | prefix_mac2str(&p->prefix.mac, | |
3601 | buf1, | |
3602 | sizeof(buf1))); | |
dff8f48d | 3603 | } else { |
d7c0a89a | 3604 | uint8_t family; |
dff8f48d | 3605 | |
57f7feb6 MK |
3606 | family = IS_EVPN_PREFIX_IPADDR_V4(p) ? AF_INET |
3607 | : AF_INET6; | |
dff8f48d | 3608 | |
b682f6de | 3609 | json_object_int_add(json, "routeType", |
57f7feb6 | 3610 | p->prefix.route_type); |
554cd77a | 3611 | json_object_int_add(json, "ethTag", p->prefix.eth_tag); |
57f7feb6 | 3612 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 3613 | json_object_string_add(json, "mac", |
57f7feb6 MK |
3614 | prefix_mac2str(&p->prefix.mac, |
3615 | buf1, | |
3616 | sizeof(buf1))); | |
b682f6de | 3617 | json_object_int_add(json, "ipLen", |
57f7feb6 MK |
3618 | IS_EVPN_PREFIX_IPADDR_V4(p) |
3619 | ? IPV4_MAX_BITLEN | |
3620 | : IPV6_MAX_BITLEN); | |
3621 | json_object_string_add( | |
3622 | json, "ip", | |
3623 | inet_ntop(family, &p->prefix.ip.ip.addr, buf2, | |
3624 | PREFIX2STR_BUFFER)); | |
dff8f48d MK |
3625 | } |
3626 | } else { | |
3627 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
3628 | } | |
9c92b5f7 MK |
3629 | } |
3630 | ||
520d5d76 | 3631 | /* |
3632 | * Function to convert evpn route to string. | |
3633 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3634 | */ | |
d62a17ae | 3635 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
3636 | { | |
3637 | char buf1[ETHER_ADDR_STRLEN]; | |
3638 | char buf2[PREFIX2STR_BUFFER]; | |
3639 | ||
3640 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a VB |
3641 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3642 | p->prefix.eth_tag, | |
d62a17ae | 3643 | IS_EVPN_PREFIX_IPADDR_V4(p) ? IPV4_MAX_BITLEN |
3644 | : IPV6_MAX_BITLEN, | |
3645 | inet_ntoa(p->prefix.ip.ipaddr_v4)); | |
3646 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3647 | if (IS_EVPN_PREFIX_IPADDR_NONE(p)) | |
554cd77a VB |
3648 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
3649 | p->prefix.route_type, | |
3650 | p->prefix.eth_tag, | |
3651 | 8 * ETH_ALEN, | |
d62a17ae | 3652 | prefix_mac2str(&p->prefix.mac, buf1, |
3653 | sizeof(buf1))); | |
3654 | else { | |
d7c0a89a | 3655 | uint8_t family; |
d62a17ae | 3656 | |
3657 | family = IS_EVPN_PREFIX_IPADDR_V4(p) ? AF_INET | |
3658 | : AF_INET6; | |
554cd77a VB |
3659 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
3660 | p->prefix.route_type, | |
3661 | p->prefix.eth_tag, | |
3662 | 8 * ETH_ALEN, | |
d62a17ae | 3663 | prefix_mac2str(&p->prefix.mac, buf1, |
3664 | sizeof(buf1)), | |
3665 | family == AF_INET ? IPV4_MAX_BITLEN | |
3666 | : IPV6_MAX_BITLEN, | |
3667 | inet_ntop(family, &p->prefix.ip.ip.addr, buf2, | |
3668 | PREFIX2STR_BUFFER)); | |
3669 | } | |
342dd0c6 | 3670 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
3671 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
3672 | p->prefix.route_type, | |
3673 | p->prefix.eth_tag, | |
3674 | p->prefix.ip_prefix_length, | |
996c9314 LB |
3675 | IS_EVPN_PREFIX_IPADDR_V4(p) |
3676 | ? inet_ntoa(p->prefix.ip.ipaddr_v4) | |
3677 | : inet6_ntoa(p->prefix.ip.ipaddr_v6)); | |
d62a17ae | 3678 | } else { |
b03b8898 | 3679 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
3680 | snprintf(buf, len, "(unsupported route type %d)", |
3681 | p->prefix.route_type); | |
d62a17ae | 3682 | } |
3683 | ||
3684 | return (buf); | |
520d5d76 | 3685 | } |
3686 | ||
128ea8ab | 3687 | /* |
3688 | * Encode EVPN prefix in Update (MP_REACH) | |
3689 | */ | |
d62a17ae | 3690 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 3691 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
3692 | uint32_t num_labels, struct attr *attr, |
3693 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 3694 | { |
3695 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 3696 | int len, ipa_len = 0; |
d62a17ae | 3697 | |
3698 | if (addpath_encode) | |
3699 | stream_putl(s, addpath_tx_id); | |
3700 | ||
3701 | /* Route type */ | |
3702 | stream_putc(s, evp->prefix.route_type); | |
3703 | ||
3704 | switch (evp->prefix.route_type) { | |
3705 | case BGP_EVPN_MAC_IP_ROUTE: | |
3706 | if (IS_EVPN_PREFIX_IPADDR_V4(evp)) | |
3707 | ipa_len = IPV4_MAX_BYTELEN; | |
3708 | else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) | |
3709 | ipa_len = IPV6_MAX_BYTELEN; | |
b57ba6d2 MK |
3710 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
3711 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
3712 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
3713 | len += 3; | |
3714 | stream_putc(s, len); | |
996c9314 | 3715 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
3716 | if (attr) |
3717 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
3718 | else | |
3719 | stream_put(s, 0, 10); | |
3720 | stream_putl(s, evp->prefix.eth_tag); /* Ethernet Tag ID */ | |
28328ea9 | 3721 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
d62a17ae | 3722 | stream_put(s, evp->prefix.mac.octet, 6); /* Mac Addr */ |
3723 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
996c9314 | 3724 | if (ipa_len) /* IP */ |
b57ba6d2 MK |
3725 | stream_put(s, &evp->prefix.ip.ip.addr, ipa_len); |
3726 | /* 1st label is the L2 VNI */ | |
3727 | stream_put(s, label, BGP_LABEL_BYTES); | |
3728 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
3729 | if (ipa_len && num_labels > 1) | |
996c9314 | 3730 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 3731 | break; |
3732 | ||
3733 | case BGP_EVPN_IMET_ROUTE: | |
3734 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
3735 | stream_put(s, prd->val, 8); /* RD */ | |
554cd77a | 3736 | stream_putl(s, evp->prefix.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 3737 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
3738 | /* Originating Router's IP Addr */ | |
3739 | stream_put_in_addr(s, &evp->prefix.ip.ipaddr_v4); | |
3740 | break; | |
3741 | ||
3742 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3743 | /* TODO: AddPath support. */ | |
b57ba6d2 | 3744 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 3745 | break; |
3746 | ||
3747 | default: | |
3748 | break; | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
3753 | struct bgp_nlri *packet, int withdraw) | |
3754 | { | |
d7c0a89a QY |
3755 | uint8_t *pnt; |
3756 | uint8_t *lim; | |
d62a17ae | 3757 | afi_t afi; |
3758 | safi_t safi; | |
d7c0a89a | 3759 | uint32_t addpath_id; |
d62a17ae | 3760 | int addpath_encoded; |
3761 | int psize = 0; | |
d7c0a89a QY |
3762 | uint8_t rtype; |
3763 | uint8_t rlen; | |
d62a17ae | 3764 | struct prefix p; |
3765 | ||
d62a17ae | 3766 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
3767 | pnt = packet->nlri; | |
3768 | lim = pnt + packet->length; | |
3769 | afi = packet->afi; | |
3770 | safi = packet->safi; | |
3771 | addpath_id = 0; | |
3772 | ||
3773 | addpath_encoded = | |
3774 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
3775 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
3776 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
3777 | ||
3778 | for (; pnt < lim; pnt += psize) { | |
3779 | /* Clear prefix structure. */ | |
3780 | memset(&p, 0, sizeof(struct prefix)); | |
3781 | ||
3782 | /* Deal with path-id if AddPath is supported. */ | |
3783 | if (addpath_encoded) { | |
3784 | /* When packet overflow occurs return immediately. */ | |
3785 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
3786 | return -1; | |
3787 | ||
3788 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
3789 | pnt += BGP_ADDPATH_ID_LEN; | |
3790 | } | |
3791 | ||
3792 | /* All EVPN NLRI types start with type and length. */ | |
3793 | if (pnt + 2 > lim) | |
3794 | return -1; | |
3795 | ||
3796 | rtype = *pnt++; | |
3797 | psize = rlen = *pnt++; | |
3798 | ||
3799 | /* When packet overflow occur return immediately. */ | |
3800 | if (pnt + psize > lim) | |
3801 | return -1; | |
3802 | ||
3803 | switch (rtype) { | |
3804 | case BGP_EVPN_MAC_IP_ROUTE: | |
3805 | if (process_type2_route(peer, afi, safi, | |
3806 | withdraw ? NULL : attr, pnt, | |
3807 | psize, addpath_id)) { | |
3808 | zlog_err( | |
3809 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
3810 | peer->bgp->vrf_id, peer->host, psize); | |
3811 | return -1; | |
3812 | } | |
3813 | break; | |
3814 | ||
3815 | case BGP_EVPN_IMET_ROUTE: | |
3816 | if (process_type3_route(peer, afi, safi, | |
3817 | withdraw ? NULL : attr, pnt, | |
3818 | psize, addpath_id)) { | |
3819 | zlog_err( | |
3820 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
3821 | peer->bgp->vrf_id, peer->host, psize); | |
3822 | return -1; | |
3823 | } | |
3824 | break; | |
3825 | ||
3826 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3827 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
3828 | psize, addpath_id, withdraw)) { | |
3829 | zlog_err( | |
3830 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
3831 | peer->bgp->vrf_id, peer->host, psize); | |
3832 | return -1; | |
3833 | } | |
3834 | break; | |
3835 | ||
3836 | default: | |
3837 | break; | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | /* Packet length consistency check. */ | |
3842 | if (pnt != lim) | |
3843 | return -1; | |
3844 | ||
3845 | return 0; | |
128ea8ab | 3846 | } |
3847 | ||
10ebe1ab MK |
3848 | /* |
3849 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
3850 | * The mapping will be used during route processing. | |
3851 | * bgp_def: default bgp instance | |
3852 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
3853 | */ | |
3854 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
3855 | { | |
3856 | int i = 0; | |
3857 | struct ecommunity_val *eval = NULL; | |
3858 | struct listnode *node = NULL, *nnode = NULL; | |
3859 | struct ecommunity *ecom = NULL; | |
3860 | ||
3861 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3862 | for (i = 0; i < ecom->size; i++) { | |
3863 | eval = (struct ecommunity_val *)(ecom->val | |
3864 | + (i | |
3865 | * ECOMMUNITY_SIZE)); | |
3866 | map_vrf_to_rt(bgp_vrf, eval); | |
3867 | } | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | /* | |
3872 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
3873 | */ | |
3874 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
3875 | { | |
3876 | int i; | |
3877 | struct ecommunity_val *eval; | |
3878 | struct listnode *node, *nnode; | |
3879 | struct ecommunity *ecom; | |
3880 | ||
3881 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3882 | for (i = 0; i < ecom->size; i++) { | |
3883 | struct vrf_irt_node *irt; | |
3884 | struct ecommunity_val eval_tmp; | |
3885 | ||
3886 | eval = (struct ecommunity_val *)(ecom->val | |
3887 | + (i | |
3888 | * ECOMMUNITY_SIZE)); | |
3889 | /* If using "automatic" RT, we only care about the | |
3890 | * local-admin sub-field. | |
3891 | * This is to facilitate using VNI as the RT for EBGP | |
3892 | * peering too. | |
3893 | */ | |
3894 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3895 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
3896 | BGP_VRF_IMPORT_RT_CFGD)) | |
3897 | mask_ecom_global_admin(&eval_tmp, eval); | |
3898 | ||
3899 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3900 | if (irt) | |
3901 | unmap_vrf_from_rt(bgp_vrf, irt); | |
3902 | } | |
3903 | } | |
3904 | } | |
3905 | ||
3906 | ||
128ea8ab | 3907 | /* |
3908 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
3909 | * The mapping will be used during route processing. | |
3910 | */ | |
d62a17ae | 3911 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3912 | { |
d62a17ae | 3913 | int i; |
3914 | struct ecommunity_val *eval; | |
3915 | struct listnode *node, *nnode; | |
3916 | struct ecommunity *ecom; | |
128ea8ab | 3917 | |
d62a17ae | 3918 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3919 | for (i = 0; i < ecom->size; i++) { | |
3920 | eval = (struct ecommunity_val *)(ecom->val | |
3921 | + (i | |
3922 | * ECOMMUNITY_SIZE)); | |
3923 | map_vni_to_rt(bgp, vpn, eval); | |
3924 | } | |
3925 | } | |
128ea8ab | 3926 | } |
3927 | ||
3928 | /* | |
3929 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
3930 | */ | |
d62a17ae | 3931 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3932 | { |
d62a17ae | 3933 | int i; |
3934 | struct ecommunity_val *eval; | |
3935 | struct listnode *node, *nnode; | |
3936 | struct ecommunity *ecom; | |
128ea8ab | 3937 | |
d62a17ae | 3938 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3939 | for (i = 0; i < ecom->size; i++) { | |
3940 | struct irt_node *irt; | |
3941 | struct ecommunity_val eval_tmp; | |
128ea8ab | 3942 | |
d62a17ae | 3943 | eval = (struct ecommunity_val *)(ecom->val |
3944 | + (i | |
3945 | * ECOMMUNITY_SIZE)); | |
3946 | /* If using "automatic" RT, we only care about the | |
3947 | * local-admin sub-field. | |
3948 | * This is to facilitate using VNI as the RT for EBGP | |
3949 | * peering too. | |
3950 | */ | |
3951 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3952 | if (!is_import_rt_configured(vpn)) | |
3953 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 3954 | |
d62a17ae | 3955 | irt = lookup_import_rt(bgp, &eval_tmp); |
3956 | if (irt) | |
3957 | unmap_vni_from_rt(bgp, vpn, irt); | |
3958 | } | |
3959 | } | |
128ea8ab | 3960 | } |
3961 | ||
3962 | /* | |
3963 | * Derive Import RT automatically for VNI and map VNI to RT. | |
3964 | * The mapping will be used during route processing. | |
3965 | */ | |
d62a17ae | 3966 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3967 | { |
c581d8b0 | 3968 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 3969 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 3970 | |
d62a17ae | 3971 | /* Map RT to VNI */ |
3972 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 3973 | } |
3974 | ||
3975 | /* | |
3976 | * Derive Export RT automatically for VNI. | |
3977 | */ | |
d62a17ae | 3978 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3979 | { |
c581d8b0 | 3980 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 3981 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 3982 | } |
3983 | ||
676f83b9 | 3984 | /* |
3985 | * Derive RD automatically for VNI using passed information - it | |
3986 | * is of the form RouterId:unique-id-for-vni. | |
3987 | */ | |
3988 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
3989 | { | |
92708db6 | 3990 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 3991 | } |
3992 | ||
128ea8ab | 3993 | /* |
3994 | * Derive RD automatically for VNI using passed information - it | |
3995 | * is of the form RouterId:unique-id-for-vni. | |
3996 | */ | |
d62a17ae | 3997 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3998 | { |
d62a17ae | 3999 | char buf[100]; |
128ea8ab | 4000 | |
d62a17ae | 4001 | vpn->prd.family = AF_UNSPEC; |
4002 | vpn->prd.prefixlen = 64; | |
4003 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4004 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4005 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4006 | } |
4007 | ||
4008 | /* | |
4009 | * Lookup VNI. | |
4010 | */ | |
d62a17ae | 4011 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4012 | { |
d62a17ae | 4013 | struct bgpevpn *vpn; |
4014 | struct bgpevpn tmp; | |
128ea8ab | 4015 | |
d62a17ae | 4016 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4017 | tmp.vni = vni; | |
4018 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4019 | return vpn; | |
128ea8ab | 4020 | } |
4021 | ||
4022 | /* | |
4023 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4024 | */ | |
d62a17ae | 4025 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4026 | struct in_addr originator_ip, |
4027 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4028 | { |
d62a17ae | 4029 | struct bgpevpn *vpn; |
128ea8ab | 4030 | |
d62a17ae | 4031 | if (!bgp) |
4032 | return NULL; | |
128ea8ab | 4033 | |
d62a17ae | 4034 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4035 | if (!vpn) | |
4036 | return NULL; | |
128ea8ab | 4037 | |
d62a17ae | 4038 | /* Set values - RD and RT set to defaults. */ |
4039 | vpn->vni = vni; | |
4040 | vpn->originator_ip = originator_ip; | |
29c53922 | 4041 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4042 | |
d62a17ae | 4043 | /* Initialize route-target import and export lists */ |
4044 | vpn->import_rtl = list_new(); | |
4045 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
4046 | vpn->export_rtl = list_new(); | |
4047 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
e9eb5f63 | 4048 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4049 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4050 | |
d62a17ae | 4051 | /* Initialize EVPN route table. */ |
960035b2 | 4052 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4053 | |
d62a17ae | 4054 | /* Add to hash */ |
4055 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4056 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4057 | return NULL; | |
4058 | } | |
6a8657d0 MK |
4059 | |
4060 | /* add to l2vni list on corresponding vrf */ | |
4061 | bgpevpn_link_to_l3vni(vpn); | |
4062 | ||
d62a17ae | 4063 | QOBJ_REG(vpn, bgpevpn); |
4064 | return vpn; | |
128ea8ab | 4065 | } |
4066 | ||
4067 | /* | |
4068 | * Free a given VPN - called in multiple scenarios such as zebra | |
4069 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4070 | * This just frees appropriate memory, caller should have taken other | |
4071 | * needed actions. | |
4072 | */ | |
d62a17ae | 4073 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4074 | { |
6a8657d0 | 4075 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4076 | bgp_table_unlock(vpn->route_table); |
4077 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4078 | list_delete_and_null(&vpn->import_rtl); |
4079 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4080 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4081 | hash_release(bgp->vnihash, vpn); |
4082 | QOBJ_UNREG(vpn); | |
4083 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4084 | } |
4085 | ||
4086 | /* | |
4087 | * Import route into matching VNI(s). | |
4088 | */ | |
d62a17ae | 4089 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4090 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 4091 | { |
d62a17ae | 4092 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 4093 | } |
4094 | ||
4095 | /* | |
4096 | * Unimport route from matching VNI(s). | |
4097 | */ | |
d62a17ae | 4098 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4099 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 4100 | { |
d62a17ae | 4101 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 4102 | } |
4103 | ||
db0e1937 MK |
4104 | /* filter routes which have martian next hops */ |
4105 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
4106 | { | |
0291c246 MK |
4107 | afi_t afi; |
4108 | safi_t safi; | |
4109 | struct bgp_node *rd_rn, *rn; | |
4110 | struct bgp_table *table; | |
4111 | struct bgp_info *ri; | |
db0e1937 MK |
4112 | |
4113 | afi = AFI_L2VPN; | |
4114 | safi = SAFI_EVPN; | |
4115 | ||
4116 | /* Walk entire global routing table and evaluate routes which could be | |
4117 | * imported into this VPN. Note that we cannot just look at the routes | |
4118 | * for the VNI's RD - | |
4119 | * remote routes applicable for this VNI could have any RD. | |
4120 | */ | |
4121 | /* EVPN routes are a 2-level table. */ | |
4122 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
4123 | rd_rn = bgp_route_next(rd_rn)) { | |
4124 | table = (struct bgp_table *)(rd_rn->info); | |
4125 | if (!table) | |
4126 | continue; | |
4127 | ||
4128 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
4129 | ||
4130 | for (ri = rn->info; ri; ri = ri->next) { | |
4131 | ||
4132 | /* Consider "valid" remote routes applicable for | |
4133 | * this VNI. */ | |
4134 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
4135 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
4136 | continue; | |
4137 | ||
60466a63 | 4138 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
4139 | |
4140 | char attr_str[BUFSIZ]; | |
4141 | char pbuf[PREFIX_STRLEN]; | |
4142 | ||
4143 | bgp_dump_attr(ri->attr, attr_str, | |
4144 | BUFSIZ); | |
4145 | ||
4146 | if (bgp_debug_update(ri->peer, &rn->p, | |
4147 | NULL, 1)) | |
4148 | zlog_debug( | |
b682f6de | 4149 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
4150 | bgp->vrf_id, |
4151 | prefix2str( | |
60466a63 | 4152 | &rn->p, pbuf, |
db0e1937 MK |
4153 | sizeof(pbuf)), |
4154 | attr_str); | |
4155 | ||
4156 | bgp_evpn_unimport_route(bgp, afi, safi, | |
4157 | &rn->p, ri); | |
4158 | ||
60466a63 QY |
4159 | bgp_rib_remove(rn, ri, ri->peer, afi, |
4160 | safi); | |
db0e1937 | 4161 | } |
db0e1937 MK |
4162 | } |
4163 | } | |
4164 | } | |
4165 | ||
4166 | return 0; | |
4167 | } | |
4168 | ||
128ea8ab | 4169 | /* |
4170 | * Handle del of a local MACIP. | |
4171 | */ | |
d62a17ae | 4172 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
4173 | struct ipaddr *ip) | |
128ea8ab | 4174 | { |
d62a17ae | 4175 | struct bgpevpn *vpn; |
4176 | struct prefix_evpn p; | |
128ea8ab | 4177 | |
d62a17ae | 4178 | if (!bgp->vnihash) { |
4179 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4180 | return -1; | |
4181 | } | |
128ea8ab | 4182 | |
d62a17ae | 4183 | /* Lookup VNI hash - should exist. */ |
4184 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4185 | if (!vpn || !is_vni_live(vpn)) { | |
4186 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
4187 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
4188 | return -1; | |
4189 | } | |
128ea8ab | 4190 | |
d62a17ae | 4191 | /* Remove EVPN type-2 route and schedule for processing. */ |
4192 | build_evpn_type2_prefix(&p, mac, ip); | |
4193 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 4194 | |
d62a17ae | 4195 | return 0; |
128ea8ab | 4196 | } |
4197 | ||
4198 | /* | |
4199 | * Handle add of a local MACIP. | |
4200 | */ | |
d62a17ae | 4201 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
d7c0a89a | 4202 | struct ipaddr *ip, uint8_t flags) |
128ea8ab | 4203 | { |
d62a17ae | 4204 | struct bgpevpn *vpn; |
4205 | struct prefix_evpn p; | |
128ea8ab | 4206 | |
d62a17ae | 4207 | if (!bgp->vnihash) { |
4208 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4209 | return -1; | |
4210 | } | |
128ea8ab | 4211 | |
d62a17ae | 4212 | /* Lookup VNI hash - should exist. */ |
4213 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4214 | if (!vpn || !is_vni_live(vpn)) { | |
4215 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
4216 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
4217 | return -1; | |
4218 | } | |
128ea8ab | 4219 | |
d62a17ae | 4220 | /* Create EVPN type-2 route and schedule for processing. */ |
4221 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 4222 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 4223 | char buf[ETHER_ADDR_STRLEN]; |
4224 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 4225 | |
d62a17ae | 4226 | zlog_err( |
ead40654 | 4227 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 4228 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
4229 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
4230 | ? "sticky gateway" | |
4231 | : "", | |
d62a17ae | 4232 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 4233 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 4234 | return -1; |
4235 | } | |
128ea8ab | 4236 | |
d62a17ae | 4237 | return 0; |
128ea8ab | 4238 | } |
4239 | ||
6a8657d0 MK |
4240 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
4241 | struct bgp *bgp_vrf) | |
4242 | { | |
4243 | struct bgpevpn *vpn = NULL; | |
4244 | struct bgp *bgp_def = NULL; | |
4245 | ||
4246 | bgp_def = bgp_get_default(); | |
4247 | assert(bgp_def); | |
4248 | ||
4249 | vpn = (struct bgpevpn *)backet->data; | |
4250 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
4251 | bgpevpn_link_to_l3vni(vpn); | |
4252 | } | |
4253 | ||
996c9314 LB |
4254 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
4255 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
4256 | { |
4257 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
4258 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
4259 | struct listnode *node = NULL; |
4260 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
4261 | as_t as = 0; |
4262 | ||
4263 | /* get the default instamce - required to get the AS number for VRF | |
523cafc4 | 4264 | * auto-creatio |
4265 | */ | |
fe1dc5a3 MK |
4266 | bgp_def = bgp_get_default(); |
4267 | if (!bgp_def) { | |
996c9314 LB |
4268 | zlog_err( |
4269 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
4270 | l3vni); | |
fe1dc5a3 MK |
4271 | return -1; |
4272 | } | |
4273 | as = bgp_def->as; | |
4274 | ||
4275 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 4276 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
4277 | if (!bgp_vrf) { |
4278 | ||
4279 | int ret = 0; | |
4280 | ||
4281 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
4282 | BGP_INSTANCE_TYPE_VRF); | |
4283 | switch (ret) { | |
4284 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
4285 | zlog_err("'bgp multiple-instance' not present\n"); | |
4286 | return -1; | |
4287 | case BGP_ERR_AS_MISMATCH: | |
4288 | zlog_err("BGP is already running; AS is %u\n", as); | |
4289 | return -1; | |
4290 | case BGP_ERR_INSTANCE_MISMATCH: | |
4291 | zlog_err("BGP instance name and AS number mismatch\n"); | |
4292 | return -1; | |
4293 | } | |
4294 | ||
4295 | /* mark as auto created */ | |
4296 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
4297 | } | |
4298 | ||
4299 | /* associate with l3vni */ | |
4300 | bgp_vrf->l3vni = l3vni; | |
4301 | ||
4302 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
4303 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
4304 | ||
b67a60d2 | 4305 | /* set the originator ip */ |
4306 | bgp_vrf->originator_ip = originator_ip; | |
4307 | ||
c48d9f5f MK |
4308 | /* set the right filter - are we using l3vni only for prefix routes? */ |
4309 | if (filter) | |
4310 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
4311 | ||
c581d8b0 MK |
4312 | /* auto derive RD/RT */ |
4313 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4314 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4315 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
4316 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 4317 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 4318 | |
6a8657d0 MK |
4319 | /* link all corresponding l2vnis */ |
4320 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
4321 | (void (*)(struct hash_backet *, |
4322 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
4323 | bgp_vrf); |
4324 | ||
c48d9f5f MK |
4325 | /* Only update all corresponding type-2 routes if we are advertising two |
4326 | * labels along with type-2 routes | |
4327 | */ | |
4328 | if (!filter) | |
4329 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
4330 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 4331 | |
06d2e8f3 MK |
4332 | /* advertise type-5 routes if needed */ |
4333 | update_advertise_vrf_routes(bgp_vrf); | |
4334 | ||
5ba238b7 MK |
4335 | /* install all remote routes belonging to this l3vni into correspondng |
4336 | * vrf */ | |
4337 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
4338 | |
4339 | return 0; | |
4340 | } | |
4341 | ||
996c9314 | 4342 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
4343 | { |
4344 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
4345 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
4346 | struct listnode *node = NULL; | |
18abc1eb | 4347 | struct listnode *next = NULL; |
f1f8b53c | 4348 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
4349 | |
4350 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
4351 | if (!bgp_vrf) { | |
996c9314 LB |
4352 | zlog_err( |
4353 | "Cannot process L3VNI %u Del - Could not find BGP instance", | |
4354 | l3vni); | |
fe1dc5a3 MK |
4355 | return -1; |
4356 | } | |
4357 | ||
f1f8b53c MK |
4358 | bgp_def = bgp_get_default(); |
4359 | if (!bgp_def) { | |
996c9314 LB |
4360 | zlog_err( |
4361 | "Cannot process L3VNI %u Del - Could not find default BGP instance", | |
4362 | l3vni); | |
f1f8b53c MK |
4363 | return -1; |
4364 | } | |
4365 | ||
1eb88002 | 4366 | /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will |
523cafc4 | 4367 | * take care of uninstalling the routes from zebra |
4368 | */ | |
1eb88002 MK |
4369 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) |
4370 | uninstall_routes_for_vrf(bgp_vrf); | |
5ba238b7 | 4371 | |
06d2e8f3 MK |
4372 | /* delete/withdraw all type-5 routes */ |
4373 | delete_withdraw_vrf_routes(bgp_vrf); | |
4374 | ||
fe1dc5a3 MK |
4375 | /* remove the l3vni from vrf instance */ |
4376 | bgp_vrf->l3vni = 0; | |
4377 | ||
4378 | /* remove the Rmac from the BGP vrf */ | |
4379 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
4380 | ||
c581d8b0 | 4381 | /* delete RD/RT */ |
23a06e11 | 4382 | if (bgp_vrf->vrf_import_rtl && !list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 4383 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 4384 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 MK |
4385 | } |
4386 | if (bgp_vrf->vrf_export_rtl && !list_isempty(bgp_vrf->vrf_export_rtl)) { | |
5ba238b7 | 4387 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 4388 | } |
fe1dc5a3 | 4389 | |
f1f8b53c | 4390 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
4391 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
4392 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
4393 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
4394 | update_routes_for_vni(bgp_def, vpn); | |
4395 | } | |
4396 | } | |
fe1dc5a3 | 4397 | |
18abc1eb | 4398 | /* If any L2VNIs point to this instance, unlink them. */ |
4399 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
4400 | bgpevpn_unlink_from_l3vni(vpn); | |
4401 | ||
fe1dc5a3 MK |
4402 | /* Delete the instance if it was autocreated */ |
4403 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
4404 | bgp_delete(bgp_vrf); | |
4405 | ||
4406 | return 0; | |
4407 | } | |
4408 | ||
128ea8ab | 4409 | /* |
4410 | * Handle del of a local VNI. | |
4411 | */ | |
d62a17ae | 4412 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 4413 | { |
d62a17ae | 4414 | struct bgpevpn *vpn; |
128ea8ab | 4415 | |
d62a17ae | 4416 | if (!bgp->vnihash) { |
4417 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4418 | return -1; | |
4419 | } | |
128ea8ab | 4420 | |
d62a17ae | 4421 | /* Locate VNI hash */ |
4422 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4423 | if (!vpn) { | |
4424 | zlog_warn("%u: VNI hash entry for VNI %u not found at DEL", | |
4425 | bgp->vrf_id, vni); | |
4426 | return 0; | |
4427 | } | |
128ea8ab | 4428 | |
d62a17ae | 4429 | /* Remove all local EVPN routes and schedule for processing (to |
4430 | * withdraw from peers). | |
4431 | */ | |
4432 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4433 | |
db0e1937 MK |
4434 | /* |
4435 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
4436 | */ | |
4437 | bgp_tip_del(bgp, &vpn->originator_ip); | |
4438 | ||
d62a17ae | 4439 | /* Clear "live" flag and see if hash needs to be freed. */ |
4440 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4441 | if (!is_vni_configured(vpn)) | |
4442 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4443 | |
d62a17ae | 4444 | return 0; |
128ea8ab | 4445 | } |
4446 | ||
4447 | /* | |
d1911c26 | 4448 | * Handle add (or update) of a local VNI. The VNI changes we care |
4449 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 4450 | */ |
d62a17ae | 4451 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 4452 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 4453 | { |
4454 | struct bgpevpn *vpn; | |
4455 | struct prefix_evpn p; | |
4456 | ||
4457 | if (!bgp->vnihash) { | |
4458 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4459 | return -1; | |
4460 | } | |
4461 | ||
4462 | /* Lookup VNI. If present and no change, exit. */ | |
4463 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 4464 | if (vpn) { |
29c53922 | 4465 | |
d1911c26 | 4466 | if (is_vni_live(vpn) |
4467 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
4468 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
4469 | /* Probably some other param has changed that we don't | |
4470 | * care about. */ | |
4471 | return 0; | |
4472 | ||
4473 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
4474 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
4475 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 4476 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
4477 | bgpevpn_link_to_l3vni(vpn); |
4478 | } | |
29c53922 | 4479 | |
d1911c26 | 4480 | /* If tunnel endpoint IP has changed, update (and delete prior |
4481 | * type-3 route, if needed.) | |
4482 | */ | |
4483 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
4484 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 4485 | |
d1911c26 | 4486 | /* Update all routes with new endpoint IP and/or export RT |
4487 | * for VRFs | |
4488 | */ | |
4489 | if (is_vni_live(vpn)) | |
4490 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 4491 | } |
4492 | ||
4493 | /* Create or update as appropriate. */ | |
4494 | if (!vpn) { | |
29c53922 | 4495 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 4496 | if (!vpn) { |
4497 | zlog_err( | |
4498 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
4499 | bgp->vrf_id, vni); | |
4500 | return -1; | |
4501 | } | |
4502 | } | |
4503 | ||
db0e1937 | 4504 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
4505 | if (is_vni_live(vpn)) |
4506 | return 0; | |
4507 | ||
d62a17ae | 4508 | /* Mark as "live" */ |
4509 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4510 | ||
db0e1937 MK |
4511 | /* tunnel is now active, add tunnel-ip to db */ |
4512 | bgp_tip_add(bgp, &originator_ip); | |
4513 | ||
4514 | /* filter routes as nexthop database has changed */ | |
4515 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
4516 | ||
d62a17ae | 4517 | /* Create EVPN type-3 route and schedule for processing. */ |
4518 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4519 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
4520 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
4521 | bgp->vrf_id, vni); | |
4522 | return -1; | |
4523 | } | |
4524 | ||
4525 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
4526 | * VNI, | |
4527 | * install them. | |
4528 | */ | |
4529 | install_routes_for_vni(bgp, vpn); | |
4530 | ||
d7d97010 MK |
4531 | /* If we are advertising gateway mac-ip |
4532 | It needs to be conveyed again to zebra */ | |
4533 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
4534 | ||
d62a17ae | 4535 | return 0; |
b18825eb | 4536 | } |
14c1a7bf | 4537 | |
7724c0a1 | 4538 | /* |
4539 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
4540 | * EVPN routes from peers. | |
4541 | */ | |
d62a17ae | 4542 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 4543 | { |
9d303b37 DL |
4544 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4545 | void *))cleanup_vni_on_disable, | |
4546 | bgp); | |
7724c0a1 | 4547 | } |
4548 | ||
14c1a7bf | 4549 | /* |
4550 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
4551 | * BGP instance (default) is being freed. | |
4552 | */ | |
d62a17ae | 4553 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 4554 | { |
d62a17ae | 4555 | if (bgp->vnihash) |
9d303b37 DL |
4556 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4557 | void *))free_vni_entry, | |
4558 | bgp); | |
d62a17ae | 4559 | if (bgp->import_rt_hash) |
4560 | hash_free(bgp->import_rt_hash); | |
4561 | bgp->import_rt_hash = NULL; | |
10ebe1ab MK |
4562 | if (bgp->vrf_import_rt_hash) |
4563 | hash_free(bgp->vrf_import_rt_hash); | |
4564 | bgp->vrf_import_rt_hash = NULL; | |
d62a17ae | 4565 | if (bgp->vnihash) |
4566 | hash_free(bgp->vnihash); | |
4567 | bgp->vnihash = NULL; | |
c581d8b0 | 4568 | if (bgp->vrf_import_rtl) |
bb7a24ab | 4569 | list_delete_and_null(&bgp->vrf_import_rtl); |
c581d8b0 | 4570 | if (bgp->vrf_export_rtl) |
bb7a24ab | 4571 | list_delete_and_null(&bgp->vrf_export_rtl); |
6a8657d0 | 4572 | if (bgp->l2vnis) |
bb7a24ab | 4573 | list_delete_and_null(&bgp->l2vnis); |
14c1a7bf | 4574 | } |
4575 | ||
4576 | /* | |
4577 | * Initialization for EVPN | |
4578 | * Create | |
4579 | * VNI hash table | |
4580 | * hash for RT to VNI | |
14c1a7bf | 4581 | */ |
d62a17ae | 4582 | void bgp_evpn_init(struct bgp *bgp) |
4583 | { | |
4584 | bgp->vnihash = | |
4585 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
4586 | bgp->import_rt_hash = | |
4587 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
4588 | "BGP Import RT Hash"); | |
10ebe1ab MK |
4589 | bgp->vrf_import_rt_hash = |
4590 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
4591 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
4592 | bgp->vrf_import_rtl = list_new(); |
4593 | bgp->vrf_import_rtl->cmp = | |
4594 | (int (*)(void *, void *))evpn_route_target_cmp; | |
4595 | ||
4596 | bgp->vrf_export_rtl = list_new(); | |
4597 | bgp->vrf_export_rtl->cmp = | |
4598 | (int (*)(void *, void *))evpn_route_target_cmp; | |
6a8657d0 | 4599 | bgp->l2vnis = list_new(); |
996c9314 | 4600 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 4601 | } |
10ebe1ab MK |
4602 | |
4603 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
4604 | { | |
4605 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4606 | } |