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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); |
3714a385 | 513 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 514 | /* IP address length and IP address, if any. */ |
3714a385 | 515 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 516 | stream_putl(s, 0); |
517 | else { | |
3714a385 | 518 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 519 | : IPV6_MAX_BYTELEN; |
520 | stream_putl(s, ipa_len); | |
3714a385 | 521 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 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, | |
3714a385 | 535 | prefix_mac2str(&p->prefix.macip_addr.mac, |
536 | buf1, sizeof(buf1)), | |
537 | ipaddr2str(&p->prefix.macip_addr.ip, | |
538 | buf3, sizeof(buf3)), flags, | |
996c9314 LB |
539 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
540 | sizeof(buf2))); | |
d62a17ae | 541 | |
542 | return zclient_send_message(zclient); | |
7ef5a232 | 543 | } |
b18825eb | 544 | |
128ea8ab | 545 | /* |
546 | * Add (update) or delete remote VTEP from zebra. | |
547 | */ | |
d62a17ae | 548 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
549 | struct prefix_evpn *p, int add) | |
128ea8ab | 550 | { |
d62a17ae | 551 | struct stream *s; |
128ea8ab | 552 | |
d62a17ae | 553 | /* Check socket. */ |
554 | if (!zclient || zclient->sock < 0) | |
555 | return 0; | |
128ea8ab | 556 | |
d62a17ae | 557 | /* Don't try to register if Zebra doesn't know of this instance. */ |
558 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
559 | return 0; | |
128ea8ab | 560 | |
d62a17ae | 561 | s = zclient->obuf; |
562 | stream_reset(s); | |
128ea8ab | 563 | |
996c9314 LB |
564 | zclient_create_header( |
565 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
566 | bgp->vrf_id); | |
d62a17ae | 567 | stream_putl(s, vpn->vni); |
3714a385 | 568 | if (is_evpn_prefix_ipaddr_v4(p)) |
569 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
570 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
d62a17ae | 571 | zlog_err( |
572 | "Bad remote IP when trying to %s remote VTEP for VNI %u", | |
573 | add ? "ADD" : "DEL", vpn->vni); | |
574 | return -1; | |
575 | } | |
128ea8ab | 576 | |
d62a17ae | 577 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 578 | |
d62a17ae | 579 | if (bgp_debug_zebra(NULL)) |
580 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
581 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 582 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 583 | |
d62a17ae | 584 | return zclient_send_message(zclient); |
128ea8ab | 585 | } |
586 | ||
342dd0c6 | 587 | /* |
588 | * Build extended communities for EVPN prefix route. | |
589 | */ | |
590 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
591 | struct attr *attr) | |
592 | { | |
593 | struct ecommunity ecom_encap; | |
594 | struct ecommunity ecom_rmac; | |
595 | struct ecommunity_val eval; | |
596 | struct ecommunity_val eval_rmac; | |
597 | bgp_encap_types tnl_type; | |
598 | struct listnode *node, *nnode; | |
599 | struct ecommunity *ecom; | |
600 | struct list *vrf_export_rtl = NULL; | |
601 | ||
602 | /* Encap */ | |
603 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
604 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
605 | encode_encap_extcomm(tnl_type, &eval); | |
606 | ecom_encap.size = 1; | |
d7c0a89a | 607 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 608 | |
609 | /* Add Encap */ | |
610 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
611 | ||
612 | /* Add the export RTs for L3VNI/VRF */ | |
613 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
614 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
615 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) | |
996c9314 LB |
616 | attr->ecommunity = |
617 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 618 | } |
619 | ||
620 | /* add the router mac extended community */ | |
621 | if (!is_zero_mac(&attr->rmac)) { | |
622 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
623 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
624 | ecom_rmac.size = 1; | |
625 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
626 | attr->ecommunity = |
627 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 628 | } |
629 | ||
630 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
631 | } | |
632 | ||
128ea8ab | 633 | /* |
1ec31309 | 634 | * Build extended communities for EVPN route. |
635 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
636 | * and ENCAP extended communities are applicable for all routes. | |
637 | * The default gateway extended community and MAC mobility (sticky) extended | |
638 | * community are added as needed based on passed settings - only for type-2 | |
639 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
640 | * added, if present, based on passed settings - only for non-link-local | |
641 | * type-2 routes. | |
128ea8ab | 642 | */ |
7ec156a9 | 643 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 644 | int add_l3_ecomm) |
128ea8ab | 645 | { |
d62a17ae | 646 | struct ecommunity ecom_encap; |
647 | struct ecommunity ecom_sticky; | |
ead40654 | 648 | struct ecommunity ecom_default_gw; |
bc59a672 | 649 | struct ecommunity ecom_rmac; |
d62a17ae | 650 | struct ecommunity_val eval; |
651 | struct ecommunity_val eval_sticky; | |
ead40654 | 652 | struct ecommunity_val eval_default_gw; |
bc59a672 | 653 | struct ecommunity_val eval_rmac; |
d62a17ae | 654 | bgp_encap_types tnl_type; |
655 | struct listnode *node, *nnode; | |
656 | struct ecommunity *ecom; | |
d7c0a89a | 657 | uint32_t seqnum; |
7a3e76f1 | 658 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 659 | |
d62a17ae | 660 | /* Encap */ |
661 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
662 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
663 | encode_encap_extcomm(tnl_type, &eval); | |
664 | ecom_encap.size = 1; | |
d7c0a89a | 665 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 666 | |
d62a17ae | 667 | /* Add Encap */ |
668 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 669 | |
7a3e76f1 | 670 | /* Add the export RTs for L2VNI */ |
d62a17ae | 671 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
672 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 673 | |
1ec31309 | 674 | /* Add the export RTs for L3VNI if told to - caller determines |
675 | * when this should be done. | |
523cafc4 | 676 | */ |
1ec31309 | 677 | if (add_l3_ecomm) { |
7ec156a9 MK |
678 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
679 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
680 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
681 | ecom)) | |
996c9314 LB |
682 | attr->ecommunity = ecommunity_merge( |
683 | attr->ecommunity, ecom); | |
7ec156a9 | 684 | } |
f1f8b53c | 685 | } |
7a3e76f1 | 686 | |
1ec31309 | 687 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 688 | if (attr->sticky) { |
689 | seqnum = 0; | |
690 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
691 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
692 | ecom_sticky.size = 1; | |
d7c0a89a | 693 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 694 | attr->ecommunity = |
695 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
696 | } | |
c85c03c7 | 697 | |
1ec31309 | 698 | /* Add RMAC, if told to. */ |
699 | if (add_l3_ecomm) { | |
bc59a672 MK |
700 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
701 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
702 | ecom_rmac.size = 1; | |
703 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
704 | attr->ecommunity = |
705 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
706 | } |
707 | ||
1ec31309 | 708 | /* Add default gateway, if needed. */ |
ead40654 MK |
709 | if (attr->default_gw) { |
710 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
711 | encode_default_gw_extcomm(&eval_default_gw); | |
712 | ecom_default_gw.size = 1; | |
713 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
714 | attr->ecommunity = |
715 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
716 | } |
717 | ||
d62a17ae | 718 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 719 | } |
720 | ||
721 | /* | |
722 | * Add MAC mobility extended community to attribute. | |
723 | */ | |
d7c0a89a | 724 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 725 | { |
726 | struct ecommunity ecom_tmp; | |
727 | struct ecommunity_val eval; | |
d7c0a89a | 728 | uint8_t *ecom_val_ptr; |
d62a17ae | 729 | int i; |
d7c0a89a | 730 | uint8_t *pnt; |
d62a17ae | 731 | int type = 0; |
732 | int sub_type = 0; | |
733 | ||
734 | /* Build MM */ | |
735 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
736 | ||
737 | /* Find current MM ecommunity */ | |
421bb26a | 738 | ecom_val_ptr = NULL; |
d62a17ae | 739 | |
740 | if (attr->ecommunity) { | |
741 | for (i = 0; i < attr->ecommunity->size; i++) { | |
742 | pnt = attr->ecommunity->val + (i * 8); | |
743 | type = *pnt++; | |
744 | sub_type = *pnt++; | |
745 | ||
746 | if (type == ECOMMUNITY_ENCODE_EVPN | |
747 | && sub_type | |
748 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
749 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
750 | + (i * 8)); | |
d62a17ae | 751 | break; |
752 | } | |
753 | } | |
754 | } | |
755 | ||
756 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
757 | if (ecom_val_ptr) { |
758 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 759 | } |
760 | /* Add MM to existing */ | |
761 | else { | |
762 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
763 | ecom_tmp.size = 1; | |
d7c0a89a | 764 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 765 | |
766 | attr->ecommunity = | |
767 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
768 | } | |
128ea8ab | 769 | } |
770 | ||
771 | /* Install EVPN route into zebra. */ | |
d62a17ae | 772 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
773 | struct prefix_evpn *p, | |
d7c0a89a | 774 | struct in_addr remote_vtep_ip, uint8_t flags) |
128ea8ab | 775 | { |
d62a17ae | 776 | int ret; |
128ea8ab | 777 | |
d62a17ae | 778 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
779 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
ead40654 | 780 | 1, flags); |
d62a17ae | 781 | else |
782 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 783 | |
d62a17ae | 784 | return ret; |
128ea8ab | 785 | } |
786 | ||
787 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 788 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
789 | struct prefix_evpn *p, | |
790 | struct in_addr remote_vtep_ip) | |
128ea8ab | 791 | { |
d62a17ae | 792 | int ret; |
128ea8ab | 793 | |
d62a17ae | 794 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
795 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
796 | 0, 0); | |
797 | else | |
798 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 799 | |
d62a17ae | 800 | return ret; |
128ea8ab | 801 | } |
802 | ||
803 | /* | |
804 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
805 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
806 | * from peers. | |
807 | */ | |
d62a17ae | 808 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
809 | struct bgp_node *rn, | |
810 | struct bgp_info *old_local) | |
128ea8ab | 811 | { |
d62a17ae | 812 | struct bgp_node *global_rn; |
813 | struct bgp_info *ri; | |
814 | afi_t afi = AFI_L2VPN; | |
815 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 816 | |
d62a17ae | 817 | /* Locate route node in the global EVPN routing table. Note that |
818 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
819 | * L3VPN routes. | |
820 | */ | |
821 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
822 | (struct prefix *)&rn->p, &vpn->prd); | |
823 | if (global_rn) { | |
824 | /* Delete route entry in the global EVPN table. */ | |
825 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
128ea8ab | 826 | |
d62a17ae | 827 | /* Schedule for processing - withdraws to peers happen from |
828 | * this table. | |
829 | */ | |
830 | if (ri) | |
831 | bgp_process(bgp, global_rn, afi, safi); | |
832 | bgp_unlock_node(global_rn); | |
833 | } | |
128ea8ab | 834 | |
d62a17ae | 835 | /* Delete route entry in the VNI route table, caller to remove. */ |
836 | bgp_info_delete(rn, old_local); | |
128ea8ab | 837 | } |
838 | ||
839 | /* | |
840 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
841 | * if appropriate. | |
842 | */ | |
d62a17ae | 843 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
844 | struct bgp_node *rn) | |
845 | { | |
846 | struct bgp_info *old_select, *new_select; | |
847 | struct bgp_info_pair old_and_new; | |
848 | afi_t afi = AFI_L2VPN; | |
849 | safi_t safi = SAFI_EVPN; | |
850 | int ret = 0; | |
d7c0a89a | 851 | uint8_t flags = 0; |
d62a17ae | 852 | |
853 | /* Compute the best path. */ | |
854 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
855 | afi, safi); | |
856 | old_select = old_and_new.old; | |
857 | new_select = old_and_new.new; | |
858 | ||
859 | /* If the best path hasn't changed - see if there is still something to | |
860 | * update | |
861 | * to zebra RIB. | |
862 | */ | |
863 | if (old_select && old_select == new_select | |
864 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 865 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 866 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
867 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
868 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
869 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
870 | if (old_select->attr->sticky) | |
871 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
872 | if (old_select->attr->default_gw) | |
873 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
996c9314 LB |
874 | ret = evpn_zebra_install( |
875 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
876 | old_select->attr->nexthop, flags); | |
ead40654 | 877 | } |
d62a17ae | 878 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
879 | bgp_zebra_clear_route_change_flags(rn); | |
880 | return ret; | |
881 | } | |
882 | ||
883 | /* If the user did a "clear" this flag will be set */ | |
884 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
885 | ||
886 | /* bestpath has changed; update relevant fields and install or uninstall | |
887 | * into the zebra RIB. | |
888 | */ | |
889 | if (old_select || new_select) | |
890 | bgp_bump_version(rn); | |
891 | ||
892 | if (old_select) | |
893 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
894 | if (new_select) { | |
895 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
896 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
897 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
898 | } | |
899 | ||
900 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 901 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
902 | flags = 0; |
903 | if (new_select->attr->sticky) | |
904 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
905 | if (new_select->attr->default_gw) | |
906 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
d62a17ae | 907 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
996c9314 | 908 | new_select->attr->nexthop, flags); |
d62a17ae | 909 | /* If an old best existed and it was a "local" route, the only |
910 | * reason | |
911 | * it would be supplanted is due to MAC mobility procedures. So, | |
912 | * we | |
913 | * need to do an implicit delete and withdraw that route from | |
914 | * peers. | |
915 | */ | |
916 | if (old_select && old_select->peer == bgp->peer_self | |
917 | && old_select->type == ZEBRA_ROUTE_BGP | |
918 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
919 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
920 | } else { | |
921 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 922 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 923 | ret = evpn_zebra_uninstall(bgp, vpn, |
924 | (struct prefix_evpn *)&rn->p, | |
925 | old_select->attr->nexthop); | |
926 | } | |
927 | ||
928 | /* Clear any route change flags. */ | |
929 | bgp_zebra_clear_route_change_flags(rn); | |
930 | ||
931 | /* Reap old select bgp_info, if it has been removed */ | |
932 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
933 | bgp_info_reap(rn, old_select); | |
934 | ||
935 | return ret; | |
128ea8ab | 936 | } |
937 | ||
ead40654 MK |
938 | /* |
939 | * Return true if the local ri for this rn is of type gateway mac | |
940 | */ | |
941 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
942 | { | |
996c9314 LB |
943 | struct bgp_info *tmp_ri = NULL; |
944 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
945 | |
946 | local_ri = NULL; | |
947 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
948 | if (tmp_ri->peer == bgp->peer_self | |
949 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
950 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
951 | local_ri = tmp_ri; | |
952 | } | |
953 | ||
954 | if (!local_ri) | |
955 | return 0; | |
956 | ||
957 | return local_ri->attr->default_gw; | |
958 | } | |
959 | ||
c85c03c7 | 960 | |
961 | /* | |
962 | * Return true if the local ri for this rn has sticky set | |
963 | */ | |
d62a17ae | 964 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 965 | { |
d62a17ae | 966 | struct bgp_info *tmp_ri; |
967 | struct bgp_info *local_ri; | |
c85c03c7 | 968 | |
d62a17ae | 969 | local_ri = NULL; |
970 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
971 | if (tmp_ri->peer == bgp->peer_self | |
972 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
973 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
974 | local_ri = tmp_ri; | |
975 | } | |
c85c03c7 | 976 | |
d62a17ae | 977 | if (!local_ri) |
978 | return 0; | |
c85c03c7 | 979 | |
d62a17ae | 980 | return local_ri->attr->sticky; |
c85c03c7 | 981 | } |
982 | ||
342dd0c6 | 983 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
984 | struct bgp *bgp_vrf, afi_t afi, | |
985 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 986 | struct attr *attr, int *route_changed) |
342dd0c6 | 987 | { |
988 | struct attr *attr_new = NULL; | |
989 | struct bgp_info *ri = NULL; | |
990 | mpls_label_t label = MPLS_INVALID_LABEL; | |
991 | struct bgp_info *local_ri = NULL; | |
992 | struct bgp_info *tmp_ri = NULL; | |
993 | ||
5424b7ba | 994 | *route_changed = 0; |
342dd0c6 | 995 | /* locate the local route entry if any */ |
996 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
997 | if (tmp_ri->peer == bgp_def->peer_self | |
998 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
999 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1000 | local_ri = tmp_ri; | |
1001 | } | |
1002 | ||
1003 | /* create a new route entry if one doesnt exist. | |
523cafc4 | 1004 | Otherwise see if route attr has changed |
1005 | */ | |
342dd0c6 | 1006 | if (!local_ri) { |
1007 | ||
5424b7ba MK |
1008 | /* route has changed as this is the first entry */ |
1009 | *route_changed = 1; | |
1010 | ||
342dd0c6 | 1011 | /* Add (or update) attribute to hash. */ |
1012 | attr_new = bgp_attr_intern(attr); | |
1013 | ||
1014 | /* create the route info from attribute */ | |
1015 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1016 | bgp_def->peer_self, attr_new, rn); | |
1017 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1018 | ||
b57ba6d2 | 1019 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1020 | bgp_info_extra_get(ri); |
1021 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1022 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1023 | ri->extra->num_labels = 1; | |
342dd0c6 | 1024 | |
1025 | /* add the route entry to route node*/ | |
1026 | bgp_info_add(rn, ri); | |
1027 | } else { | |
1028 | ||
1029 | tmp_ri = local_ri; | |
1030 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1031 | |
1032 | /* attribute changed */ | |
1033 | *route_changed = 1; | |
1034 | ||
342dd0c6 | 1035 | /* The attribute has changed. */ |
1036 | /* Add (or update) attribute to hash. */ | |
1037 | attr_new = bgp_attr_intern(attr); | |
1038 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1039 | ||
1040 | /* Restore route, if needed. */ | |
1041 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1042 | bgp_info_restore(rn, tmp_ri); | |
1043 | ||
1044 | /* Unintern existing, set to new. */ | |
1045 | bgp_attr_unintern(&tmp_ri->attr); | |
1046 | tmp_ri->attr = attr_new; | |
1047 | tmp_ri->uptime = bgp_clock(); | |
1048 | } | |
1049 | } | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1054 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1055 | struct attr *src_attr) | |
342dd0c6 | 1056 | { |
1057 | afi_t afi = AFI_L2VPN; | |
1058 | safi_t safi = SAFI_EVPN; | |
1059 | struct attr attr; | |
1060 | struct bgp_node *rn = NULL; | |
1061 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1062 | int route_changed = 0; |
342dd0c6 | 1063 | |
1064 | bgp_def = bgp_get_default(); | |
1065 | if (!bgp_def) | |
faafdfa8 | 1066 | return 0; |
342dd0c6 | 1067 | |
2f69f6d3 | 1068 | /* Build path attribute for this route - use the source attr, if |
1069 | * present, else treat as locally originated. | |
1070 | */ | |
1071 | if (src_attr) | |
1072 | bgp_attr_dup(&attr, src_attr); | |
1073 | else { | |
1074 | memset(&attr, 0, sizeof(struct attr)); | |
1075 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1076 | } | |
1077 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1078 | attr.nexthop = bgp_vrf->originator_ip; |
1079 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1080 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1081 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1082 | ||
1083 | /* Setup RT and encap extended community */ | |
1084 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1085 | ||
1086 | /* get the route node in global table */ | |
1087 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1088 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1089 | assert(rn); |
1090 | ||
1091 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1092 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1093 | &route_changed); | |
342dd0c6 | 1094 | |
1095 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1096 | if (route_changed) { |
1097 | bgp_process(bgp_def, rn, afi, safi); | |
1098 | bgp_unlock_node(rn); | |
1099 | } | |
342dd0c6 | 1100 | |
1101 | /* uninten temporary */ | |
5ee65f6f | 1102 | if (!src_attr) |
1103 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1104 | return 0; |
1105 | } | |
1106 | ||
128ea8ab | 1107 | /* |
1108 | * Create or update EVPN route entry. This could be in the VNI route table | |
1109 | * or the global route table. | |
1110 | */ | |
d62a17ae | 1111 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1112 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1113 | struct attr *attr, int add, int vni_table, | |
d7c0a89a | 1114 | struct bgp_info **ri, uint8_t flags) |
d62a17ae | 1115 | { |
1116 | struct bgp_info *tmp_ri; | |
1117 | struct bgp_info *local_ri, *remote_ri; | |
1118 | struct attr *attr_new; | |
b57ba6d2 | 1119 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1120 | uint32_t num_labels = 1; |
d62a17ae | 1121 | int route_change = 1; |
d7c0a89a | 1122 | uint8_t sticky = 0; |
b57ba6d2 | 1123 | struct prefix_evpn *evp; |
d62a17ae | 1124 | |
1125 | *ri = NULL; | |
b57ba6d2 MK |
1126 | evp = (struct prefix_evpn *)&rn->p; |
1127 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1128 | |
1129 | /* See if this is an update of an existing route, or a new add. Also, | |
1130 | * identify if already known from remote, and if so, the one with the | |
1131 | * highest sequence number; this is only when adding to the VNI routing | |
1132 | * table. | |
1133 | */ | |
1134 | local_ri = remote_ri = NULL; | |
1135 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1136 | if (tmp_ri->peer == bgp->peer_self | |
1137 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1138 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1139 | local_ri = tmp_ri; | |
1140 | if (vni_table) { | |
1141 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1142 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1143 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { |
1144 | if (!remote_ri) | |
1145 | remote_ri = tmp_ri; | |
1146 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1147 | > mac_mobility_seqnum(remote_ri->attr)) | |
1148 | remote_ri = tmp_ri; | |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | /* If route doesn't exist already, create a new one, if told to. | |
1154 | * Otherwise act based on whether the attributes of the route have | |
1155 | * changed or not. | |
1156 | */ | |
1157 | if (!local_ri && !add) | |
1158 | return 0; | |
1159 | ||
1160 | if (!local_ri) { | |
1161 | /* When learnt locally for the first time but already known from | |
1162 | * remote, we have to initiate appropriate MAC mobility steps. | |
1163 | * This | |
1164 | * is applicable when updating the VNI routing table. | |
1a98c087 MK |
1165 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1166 | * SVI) advertised in EVPN. | |
1167 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1168 | */ |
ead40654 | 1169 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) { |
d7c0a89a | 1170 | uint32_t cur_seqnum; |
d62a17ae | 1171 | |
1172 | /* Add MM extended community to route. */ | |
1173 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1174 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1175 | } | |
1176 | ||
1177 | /* Add (or update) attribute to hash. */ | |
1178 | attr_new = bgp_attr_intern(attr); | |
1179 | ||
1180 | /* Extract MAC mobility sequence number, if any. */ | |
1181 | attr_new->mm_seqnum = | |
1182 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1183 | attr_new->sticky = sticky; | |
1184 | ||
1185 | /* Create new route with its attribute. */ | |
1186 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1187 | bgp->peer_self, attr_new, rn); | |
1188 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1189 | bgp_info_extra_get(tmp_ri); | |
1190 | ||
1191 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1192 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1193 | |
1194 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1195 | * Only attach second label if we are advertising two labels for | |
1196 | * type-2 routes. | |
1197 | */ | |
996c9314 LB |
1198 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1199 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1200 | vni_t l3vni; |
1201 | ||
1202 | l3vni = bgpevpn_get_l3vni(vpn); | |
1203 | if (l3vni) { | |
1204 | vni2label(l3vni, &label[1]); | |
1205 | num_labels++; | |
1206 | } | |
1207 | } | |
d62a17ae | 1208 | |
b57ba6d2 MK |
1209 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1210 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1211 | bgp_info_add(rn, tmp_ri); |
1212 | } else { | |
1213 | tmp_ri = local_ri; | |
1214 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1215 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1216 | route_change = 0; | |
1217 | else { | |
c48d9f5f MK |
1218 | /* |
1219 | * The attributes have changed, type-2 routes needs to | |
1220 | * be advertised with right labels. | |
1221 | */ | |
1222 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1223 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1224 | && CHECK_FLAG(vpn->flags, | |
1225 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1226 | vni_t l3vni; |
1227 | ||
1228 | l3vni = bgpevpn_get_l3vni(vpn); | |
1229 | if (l3vni) { | |
1230 | vni2label(l3vni, &label[1]); | |
1231 | num_labels++; | |
1232 | } | |
1233 | } | |
1234 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1235 | tmp_ri->extra->num_labels = num_labels; | |
1236 | ||
d62a17ae | 1237 | /* The attribute has changed. */ |
1238 | /* Add (or update) attribute to hash. */ | |
1239 | attr_new = bgp_attr_intern(attr); | |
1240 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1241 | ||
1242 | /* Restore route, if needed. */ | |
1243 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1244 | bgp_info_restore(rn, tmp_ri); | |
1245 | ||
1246 | /* Unintern existing, set to new. */ | |
1247 | bgp_attr_unintern(&tmp_ri->attr); | |
1248 | tmp_ri->attr = attr_new; | |
1249 | tmp_ri->uptime = bgp_clock(); | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | /* Return back the route entry. */ | |
1254 | *ri = tmp_ri; | |
1255 | return route_change; | |
128ea8ab | 1256 | } |
1257 | ||
1258 | /* | |
1259 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1260 | * and schedule for processing. | |
1261 | */ | |
d62a17ae | 1262 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
d7c0a89a | 1263 | struct prefix_evpn *p, uint8_t flags) |
128ea8ab | 1264 | { |
d62a17ae | 1265 | struct bgp_node *rn; |
1266 | struct attr attr; | |
1267 | struct attr *attr_new; | |
1ec31309 | 1268 | int add_l3_ecomm = 0; |
d62a17ae | 1269 | struct bgp_info *ri; |
1270 | afi_t afi = AFI_L2VPN; | |
1271 | safi_t safi = SAFI_EVPN; | |
1272 | int route_change; | |
128ea8ab | 1273 | |
d62a17ae | 1274 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1275 | |
d62a17ae | 1276 | /* Build path-attribute for this route. */ |
1277 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1278 | attr.nexthop = vpn->originator_ip; | |
1279 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1280 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1281 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1282 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
be41eb68 MK |
1283 | |
1284 | /* PMSI is only needed for type-3 routes */ | |
1285 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1286 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1287 | ||
1ec31309 | 1288 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1289 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1290 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1291 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1292 | |
1ec31309 | 1293 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1294 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1295 | * these routes. | |
1296 | */ | |
1297 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1298 | (is_evpn_prefix_ipaddr_v4(p) || |
1299 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
1ec31309 | 1300 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) |
1301 | add_l3_ecomm = 1; | |
1302 | ||
1303 | /* Set up extended community. */ | |
1304 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1305 | |
d62a17ae | 1306 | /* First, create (or fetch) route node within the VNI. */ |
1307 | /* NOTE: There is no RD here. */ | |
1308 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1309 | |
d62a17ae | 1310 | /* Create or update route entry. */ |
1311 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1312 | 1, 1, &ri, flags); |
d62a17ae | 1313 | assert(ri); |
1314 | attr_new = ri->attr; | |
128ea8ab | 1315 | |
d62a17ae | 1316 | /* Perform route selection; this is just to set the flags correctly |
1317 | * as local route in the VNI always wins. | |
1318 | */ | |
1319 | evpn_route_select_install(bgp, vpn, rn); | |
1320 | bgp_unlock_node(rn); | |
128ea8ab | 1321 | |
d62a17ae | 1322 | /* If this is a new route or some attribute has changed, export the |
1323 | * route to the global table. The route will be advertised to peers | |
1324 | * from there. Note that this table is a 2-level tree (RD-level + | |
1325 | * Prefix-level) similar to L3VPN routes. | |
1326 | */ | |
1327 | if (route_change) { | |
1328 | struct bgp_info *global_ri; | |
128ea8ab | 1329 | |
d62a17ae | 1330 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1331 | (struct prefix *)p, &vpn->prd); | |
1332 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1333 | &global_ri, flags); |
128ea8ab | 1334 | |
d62a17ae | 1335 | /* Schedule for processing and unlock node. */ |
1336 | bgp_process(bgp, rn, afi, safi); | |
1337 | bgp_unlock_node(rn); | |
1338 | } | |
128ea8ab | 1339 | |
d62a17ae | 1340 | /* Unintern temporary. */ |
1341 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1342 | |
d62a17ae | 1343 | return 0; |
128ea8ab | 1344 | } |
1345 | ||
342dd0c6 | 1346 | /* Delete EVPN type5 route entry from global table */ |
1347 | static void delete_evpn_type5_route_entry(struct bgp *bgp_def, | |
996c9314 LB |
1348 | struct bgp *bgp_vrf, afi_t afi, |
1349 | safi_t safi, struct bgp_node *rn, | |
342dd0c6 | 1350 | struct bgp_info **ri) |
1351 | { | |
1352 | struct bgp_info *tmp_ri = NULL; | |
1353 | ||
1354 | *ri = NULL; | |
1355 | ||
1356 | /* find the matching route entry */ | |
1357 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1358 | if (tmp_ri->peer == bgp_def->peer_self | |
1359 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1360 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1361 | break; | |
1362 | ||
1363 | *ri = tmp_ri; | |
1364 | ||
1365 | /* Mark route for delete. */ | |
1366 | if (tmp_ri) | |
1367 | bgp_info_delete(rn, tmp_ri); | |
1368 | } | |
1369 | ||
1370 | /* Delete EVPN type5 route */ | |
996c9314 | 1371 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1372 | { |
1373 | afi_t afi = AFI_L2VPN; | |
1374 | safi_t safi = SAFI_EVPN; | |
1375 | struct bgp_node *rn = NULL; | |
1376 | struct bgp_info *ri = NULL; | |
1377 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1378 | ||
1379 | bgp_def = bgp_get_default(); | |
1380 | if (!bgp_def) | |
faafdfa8 | 1381 | return 0; |
342dd0c6 | 1382 | |
1383 | /* locate the global route entry for this type-5 prefix */ | |
1384 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1385 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1386 | if (!rn) | |
1387 | return 0; | |
1388 | ||
1389 | delete_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &ri); | |
1390 | if (ri) | |
1391 | bgp_process(bgp_def, rn, afi, safi); | |
1392 | bgp_unlock_node(rn); | |
1393 | return 0; | |
1394 | } | |
1395 | ||
128ea8ab | 1396 | /* |
1397 | * Delete EVPN route entry. This could be in the VNI route table | |
1398 | * or the global route table. | |
1399 | */ | |
d62a17ae | 1400 | static void delete_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1401 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1402 | struct bgp_info **ri) | |
128ea8ab | 1403 | { |
d62a17ae | 1404 | struct bgp_info *tmp_ri; |
128ea8ab | 1405 | |
d62a17ae | 1406 | *ri = NULL; |
128ea8ab | 1407 | |
d62a17ae | 1408 | /* Now, find matching route. */ |
1409 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) | |
1410 | if (tmp_ri->peer == bgp->peer_self | |
1411 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1412 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1413 | break; | |
128ea8ab | 1414 | |
d62a17ae | 1415 | *ri = tmp_ri; |
128ea8ab | 1416 | |
d62a17ae | 1417 | /* Mark route for delete. */ |
1418 | if (tmp_ri) | |
1419 | bgp_info_delete(rn, tmp_ri); | |
128ea8ab | 1420 | } |
1421 | ||
1422 | /* | |
1423 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1424 | * schedule for processing. | |
1425 | */ | |
d62a17ae | 1426 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1427 | struct prefix_evpn *p) | |
1428 | { | |
1429 | struct bgp_node *rn, *global_rn; | |
1430 | struct bgp_info *ri; | |
1431 | afi_t afi = AFI_L2VPN; | |
1432 | safi_t safi = SAFI_EVPN; | |
1433 | ||
1434 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1435 | * there | |
1436 | * is nothing further to do. | |
1437 | */ | |
1438 | /* NOTE: There is no RD here. */ | |
1439 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1440 | if (!rn) | |
1441 | return 0; | |
1442 | ||
1443 | /* Next, locate route node in the global EVPN routing table. Note that | |
1444 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1445 | * L3VPN routes. | |
1446 | */ | |
1447 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1448 | (struct prefix *)p, &vpn->prd); | |
1449 | if (global_rn) { | |
1450 | /* Delete route entry in the global EVPN table. */ | |
1451 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
1452 | ||
1453 | /* Schedule for processing - withdraws to peers happen from | |
1454 | * this table. | |
1455 | */ | |
1456 | if (ri) | |
1457 | bgp_process(bgp, global_rn, afi, safi); | |
1458 | bgp_unlock_node(global_rn); | |
1459 | } | |
1460 | ||
1461 | /* Delete route entry in the VNI route table. This can just be removed. | |
1462 | */ | |
1463 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); | |
1464 | if (ri) | |
1465 | bgp_info_reap(rn, ri); | |
1466 | bgp_unlock_node(rn); | |
1467 | ||
1468 | return 0; | |
128ea8ab | 1469 | } |
1470 | ||
1471 | /* | |
1472 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1473 | * be scheduled for advertise to peers. | |
1474 | */ | |
d62a17ae | 1475 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1476 | { | |
1477 | afi_t afi; | |
1478 | safi_t safi; | |
1479 | struct bgp_node *rn; | |
1480 | struct bgp_info *ri; | |
1481 | struct attr attr; | |
1482 | struct attr attr_sticky; | |
ead40654 | 1483 | struct attr attr_def_gw; |
1ec31309 | 1484 | struct attr attr_ip6_ll; |
d62a17ae | 1485 | struct attr *attr_new; |
1ec31309 | 1486 | int add_l3_ecomm = 0; |
d62a17ae | 1487 | |
1488 | afi = AFI_L2VPN; | |
1489 | safi = SAFI_EVPN; | |
1490 | memset(&attr, 0, sizeof(struct attr)); | |
1491 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
ead40654 | 1492 | memset(&attr_def_gw, 0, sizeof(struct attr)); |
1ec31309 | 1493 | memset(&attr_ip6_ll, 0, sizeof(struct attr)); |
d62a17ae | 1494 | |
1ec31309 | 1495 | /* Build path-attribute - multiple type-2 routes for this VNI will share |
1496 | * the same path attribute, but we need separate structures for sticky | |
1497 | * MACs, default gateway and IPv6 link-local addresses (no L3 RT/RMAC). | |
d62a17ae | 1498 | */ |
1499 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1500 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
ead40654 | 1501 | bgp_attr_default_set(&attr_def_gw, BGP_ORIGIN_IGP); |
d62a17ae | 1502 | attr.nexthop = vpn->originator_ip; |
1503 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1504 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1505 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1506 | attr_sticky.nexthop = vpn->originator_ip; |
1507 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1508 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1509 | attr_sticky.sticky = 1; | |
bc59a672 | 1510 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
ead40654 MK |
1511 | attr_def_gw.nexthop = vpn->originator_ip; |
1512 | attr_def_gw.mp_nexthop_global_in = vpn->originator_ip; | |
1513 | attr_def_gw.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1514 | attr_def_gw.default_gw = 1; | |
1515 | bgpevpn_get_rmac(vpn, &attr_def_gw.rmac); | |
1ec31309 | 1516 | bgp_attr_default_set(&attr_ip6_ll, BGP_ORIGIN_IGP); |
1517 | attr_ip6_ll.nexthop = vpn->originator_ip; | |
1518 | attr_ip6_ll.mp_nexthop_global_in = vpn->originator_ip; | |
1519 | attr_ip6_ll.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1520 | ||
1521 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local attributes if | |
1522 | * using L3 VNI for type-2 routes also. | |
1523 | */ | |
1524 | if (CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1525 | add_l3_ecomm = 1; | |
1526 | ||
1527 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1528 | build_evpn_route_extcomm(vpn, &attr_sticky, add_l3_ecomm); | |
1529 | build_evpn_route_extcomm(vpn, &attr_def_gw, add_l3_ecomm); | |
1530 | build_evpn_route_extcomm(vpn, &attr_ip6_ll, 0); | |
d62a17ae | 1531 | |
1532 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1533 | * routes updated, update corresponding entry in the global table too. | |
1534 | */ | |
1535 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1536 | rn = bgp_route_next(rn)) { | |
1537 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1538 | struct bgp_node *rd_rn; | |
1539 | struct bgp_info *global_ri; | |
1540 | ||
1541 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1542 | continue; | |
1543 | ||
3714a385 | 1544 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1545 | IN6_IS_ADDR_LINKLOCAL(&evp->prefix.macip_addr.ip.ipaddr_v6)) | |
1ec31309 | 1546 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
1547 | &attr_ip6_ll, 0, 1, &ri, 0); | |
1548 | else { | |
7ec156a9 MK |
1549 | if (evpn_route_is_sticky(bgp, rn)) |
1550 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1551 | &attr_sticky, 0, 1, &ri, |
1552 | 0); | |
ead40654 MK |
1553 | else if (evpn_route_is_def_gw(bgp, rn)) |
1554 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
1555 | &attr_def_gw, 0, 1, &ri, |
1556 | 0); | |
7ec156a9 MK |
1557 | else |
1558 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
1559 | &attr, 0, 1, &ri, 0); | |
7ec156a9 | 1560 | } |
d62a17ae | 1561 | |
1562 | /* If a local route exists for this prefix, we need to update | |
1563 | * the global routing table too. | |
1564 | */ | |
1565 | if (!ri) | |
1566 | continue; | |
1567 | ||
1568 | /* Perform route selection; this is just to set the flags | |
1569 | * correctly | |
1570 | * as local route in the VNI always wins. | |
1571 | */ | |
1572 | evpn_route_select_install(bgp, vpn, rn); | |
1573 | ||
1574 | attr_new = ri->attr; | |
1575 | ||
1576 | /* Update route in global routing table. */ | |
1577 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1578 | (struct prefix *)evp, &vpn->prd); | |
1579 | assert(rd_rn); | |
1580 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
1a98c087 | 1581 | 0, &global_ri, 0); |
d62a17ae | 1582 | |
1583 | /* Schedule for processing and unlock node. */ | |
1584 | bgp_process(bgp, rd_rn, afi, safi); | |
1585 | bgp_unlock_node(rd_rn); | |
1586 | } | |
1587 | ||
1588 | /* Unintern temporary. */ | |
1589 | aspath_unintern(&attr.aspath); | |
1590 | aspath_unintern(&attr_sticky.aspath); | |
ead40654 | 1591 | aspath_unintern(&attr_def_gw.aspath); |
1ec31309 | 1592 | aspath_unintern(&attr_ip6_ll.aspath); |
d62a17ae | 1593 | |
1594 | return 0; | |
128ea8ab | 1595 | } |
1596 | ||
1597 | /* | |
1598 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
1599 | * global routing table. These are also scheduled for withdraw from peers. | |
1600 | */ | |
d62a17ae | 1601 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1602 | { |
d62a17ae | 1603 | afi_t afi; |
1604 | safi_t safi; | |
1605 | struct bgp_node *rdrn, *rn; | |
1606 | struct bgp_table *table; | |
1607 | struct bgp_info *ri; | |
128ea8ab | 1608 | |
d62a17ae | 1609 | afi = AFI_L2VPN; |
1610 | safi = SAFI_EVPN; | |
128ea8ab | 1611 | |
d62a17ae | 1612 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
1613 | if (rdrn && rdrn->info) { | |
1614 | table = (struct bgp_table *)rdrn->info; | |
1615 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
1616 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1617 | |
d62a17ae | 1618 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1619 | continue; | |
128ea8ab | 1620 | |
d62a17ae | 1621 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
1622 | if (ri) | |
1623 | bgp_process(bgp, rn, afi, safi); | |
1624 | } | |
1625 | } | |
128ea8ab | 1626 | |
d62a17ae | 1627 | /* Unlock RD node. */ |
1628 | if (rdrn) | |
1629 | bgp_unlock_node(rdrn); | |
128ea8ab | 1630 | |
d62a17ae | 1631 | return 0; |
128ea8ab | 1632 | } |
1633 | ||
1634 | /* | |
1635 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
1636 | * table as well as the per-VNI route table. | |
1637 | */ | |
d62a17ae | 1638 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1639 | { |
d62a17ae | 1640 | afi_t afi; |
1641 | safi_t safi; | |
1642 | struct bgp_node *rn; | |
1643 | struct bgp_info *ri; | |
128ea8ab | 1644 | |
d62a17ae | 1645 | afi = AFI_L2VPN; |
1646 | safi = SAFI_EVPN; | |
128ea8ab | 1647 | |
d62a17ae | 1648 | /* First, walk the global route table for this VNI's type-2 local |
1649 | * routes. | |
1650 | * EVPN routes are a 2-level table, first get the RD table. | |
1651 | */ | |
1652 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 1653 | |
d62a17ae | 1654 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
1655 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1656 | rn = bgp_route_next(rn)) { | |
1657 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 1658 | |
d62a17ae | 1659 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
1660 | continue; | |
128ea8ab | 1661 | |
d62a17ae | 1662 | delete_evpn_route_entry(bgp, vpn, afi, safi, rn, &ri); |
128ea8ab | 1663 | |
d62a17ae | 1664 | /* Route entry in local table gets deleted immediately. */ |
1665 | if (ri) | |
1666 | bgp_info_reap(rn, ri); | |
1667 | } | |
128ea8ab | 1668 | |
d62a17ae | 1669 | return 0; |
128ea8ab | 1670 | } |
1671 | ||
1672 | /* | |
1673 | * Delete all routes in the per-VNI route table. | |
1674 | */ | |
d62a17ae | 1675 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1676 | { |
d62a17ae | 1677 | struct bgp_node *rn; |
1678 | struct bgp_info *ri, *nextri; | |
128ea8ab | 1679 | |
d62a17ae | 1680 | /* Walk this VNI's route table and delete all routes. */ |
1681 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1682 | rn = bgp_route_next(rn)) { | |
1683 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
1684 | ri = nextri) { | |
1685 | bgp_info_delete(rn, ri); | |
1686 | bgp_info_reap(rn, ri); | |
1687 | } | |
1688 | } | |
128ea8ab | 1689 | |
d62a17ae | 1690 | return 0; |
128ea8ab | 1691 | } |
1692 | ||
1693 | /* | |
1694 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
1695 | * export RT getting modified or change to tunnel IP. Note that these | |
1696 | * situations need the route in the per-VNI table as well as the global | |
1697 | * table to be updated (as attributes change). | |
1698 | */ | |
d62a17ae | 1699 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1700 | { |
d62a17ae | 1701 | int ret; |
1702 | struct prefix_evpn p; | |
128ea8ab | 1703 | |
d62a17ae | 1704 | /* Update and advertise the type-3 route (only one) followed by the |
1705 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
1706 | */ | |
1707 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1708 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
1709 | if (ret) | |
1710 | return ret; | |
128ea8ab | 1711 | |
d62a17ae | 1712 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 1713 | } |
1714 | ||
1715 | /* | |
1716 | * Delete (and withdraw) local routes for specified VNI from the global | |
1717 | * table and per-VNI table. After this, remove all other routes from | |
1718 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
1719 | * (advertise-all-vni) being disabled. | |
1720 | */ | |
d62a17ae | 1721 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 1722 | { |
d62a17ae | 1723 | int ret; |
1724 | struct prefix_evpn p; | |
128ea8ab | 1725 | |
d62a17ae | 1726 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
1727 | * followed by type-3 routes (only one) - for this VNI. | |
1728 | */ | |
1729 | ret = delete_all_type2_routes(bgp, vpn); | |
1730 | if (ret) | |
1731 | return ret; | |
128ea8ab | 1732 | |
d62a17ae | 1733 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
1734 | ret = delete_evpn_route(bgp, vpn, &p); | |
1735 | if (ret) | |
1736 | return ret; | |
128ea8ab | 1737 | |
d62a17ae | 1738 | /* Delete all routes from the per-VNI table. */ |
1739 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 1740 | } |
1741 | ||
1742 | /* | |
d1911c26 | 1743 | * There is a tunnel endpoint IP address change for this VNI, delete |
1744 | * prior type-3 route (if needed) and update. | |
1745 | * Note: Route re-advertisement happens elsewhere after other processing | |
1746 | * other changes. | |
128ea8ab | 1747 | */ |
d62a17ae | 1748 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
1749 | struct in_addr originator_ip) | |
128ea8ab | 1750 | { |
d62a17ae | 1751 | struct prefix_evpn p; |
128ea8ab | 1752 | |
ddd16ed5 MK |
1753 | /* If VNI is not live, we only need to update the originator ip */ |
1754 | if (!is_vni_live(vpn)) { | |
1755 | vpn->originator_ip = originator_ip; | |
1756 | return 0; | |
1757 | } | |
1758 | ||
db0e1937 MK |
1759 | /* Update the tunnel-ip hash */ |
1760 | bgp_tip_del(bgp, &vpn->originator_ip); | |
1761 | bgp_tip_add(bgp, &originator_ip); | |
1762 | ||
1763 | /* filter routes as martian nexthop db has changed */ | |
1764 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
1765 | ||
d62a17ae | 1766 | /* Need to withdraw type-3 route as the originator IP is part |
1767 | * of the key. | |
1768 | */ | |
1769 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
1770 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 1771 | |
d62a17ae | 1772 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
1773 | vpn->originator_ip = originator_ip; | |
d1911c26 | 1774 | return 0; |
128ea8ab | 1775 | } |
1776 | ||
d3135ba3 | 1777 | /* |
1778 | * Install route entry into the VRF routing table and invoke route selection. | |
1779 | */ | |
1780 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1781 | struct prefix_evpn *evp, | |
1782 | struct bgp_info *parent_ri) | |
1783 | { | |
1784 | struct bgp_node *rn; | |
1785 | struct bgp_info *ri; | |
1ec31309 | 1786 | struct attr attr; |
d3135ba3 | 1787 | struct attr *attr_new; |
c4edf708 | 1788 | int ret = 0; |
d3135ba3 | 1789 | struct prefix p; |
1790 | struct prefix *pp = &p; | |
1791 | afi_t afi = 0; | |
1792 | safi_t safi = 0; | |
1eb88002 MK |
1793 | char buf[PREFIX_STRLEN]; |
1794 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1795 | |
1796 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 1797 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 1798 | |
1eb88002 | 1799 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
1800 | zlog_debug( |
1801 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
1802 | prefix2str(evp, buf, sizeof(buf)), | |
1803 | prefix2str(pp, buf1, sizeof(buf)), | |
1804 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
1805 | } |
1806 | ||
d3135ba3 | 1807 | /* Create (or fetch) route within the VRF. */ |
1808 | /* NOTE: There is no RD here. */ | |
3714a385 | 1809 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 1810 | afi = AFI_IP; |
1811 | safi = SAFI_UNICAST; | |
1812 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 1813 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 1814 | afi = AFI_IP6; |
1815 | safi = SAFI_UNICAST; | |
1816 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
1817 | } else | |
1818 | return 0; | |
1819 | ||
1ec31309 | 1820 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
1821 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
1822 | * route, we have to convert the next hop to an IPv4-mapped address | |
1823 | * for the rest of the code to flow through. | |
1824 | */ | |
1825 | bgp_attr_dup(&attr, parent_ri->attr); | |
1826 | if (afi == AFI_IP6) | |
1827 | evpn_convert_nexthop_to_ipv6(&attr); | |
1828 | ||
d3135ba3 | 1829 | /* Check if route entry is already present. */ |
1830 | for (ri = rn->info; ri; ri = ri->next) | |
1831 | if (ri->extra | |
1832 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1833 | break; | |
1834 | ||
1835 | if (!ri) { | |
1836 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 1837 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 1838 | |
1839 | /* Create new route with its attribute. */ | |
90f4f482 | 1840 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 1841 | parent_ri->peer, attr_new, rn); |
1842 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1843 | bgp_info_extra_get(ri); | |
1844 | ri->extra->parent = parent_ri; | |
b57ba6d2 | 1845 | if (parent_ri->extra) { |
d3135ba3 | 1846 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
1847 | sizeof(ri->extra->label)); |
1848 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
1849 | } | |
d3135ba3 | 1850 | bgp_info_add(rn, ri); |
1851 | } else { | |
1ec31309 | 1852 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 1853 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
1854 | bgp_unlock_node(rn); | |
1855 | return 0; | |
1856 | } | |
1857 | /* The attribute has changed. */ | |
1858 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 1859 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 1860 | |
1861 | /* Restore route, if needed. */ | |
1862 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1863 | bgp_info_restore(rn, ri); | |
1864 | ||
1865 | /* Mark if nexthop has changed. */ | |
1ec31309 | 1866 | if ((afi == AFI_IP && |
1867 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
1868 | (afi == AFI_IP6 && | |
1869 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
1870 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 1871 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
1872 | ||
1873 | /* Unintern existing, set to new. */ | |
1874 | bgp_attr_unintern(&ri->attr); | |
1875 | ri->attr = attr_new; | |
1876 | ri->uptime = bgp_clock(); | |
1877 | } | |
1878 | ||
1879 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 1880 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 1881 | |
1882 | return ret; | |
1883 | } | |
1884 | ||
128ea8ab | 1885 | /* |
1886 | * Install route entry into the VNI routing table and invoke route selection. | |
1887 | */ | |
d62a17ae | 1888 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1889 | struct prefix_evpn *p, | |
1890 | struct bgp_info *parent_ri) | |
1891 | { | |
1892 | struct bgp_node *rn; | |
1893 | struct bgp_info *ri; | |
1894 | struct attr *attr_new; | |
1895 | int ret; | |
1896 | ||
1897 | /* Create (or fetch) route within the VNI. */ | |
1898 | /* NOTE: There is no RD here. */ | |
1899 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
1900 | ||
1901 | /* Check if route entry is already present. */ | |
1902 | for (ri = rn->info; ri; ri = ri->next) | |
1903 | if (ri->extra | |
1904 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
1905 | break; | |
1906 | ||
1907 | if (!ri) { | |
1908 | /* Add (or update) attribute to hash. */ | |
1909 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1910 | ||
1911 | /* Create new route with its attribute. */ | |
90f4f482 | 1912 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 1913 | parent_ri->peer, attr_new, rn); |
1914 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1915 | bgp_info_extra_get(ri); | |
1916 | ri->extra->parent = parent_ri; | |
b57ba6d2 | 1917 | if (parent_ri->extra) { |
d62a17ae | 1918 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
1919 | sizeof(ri->extra->label)); |
1920 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
1921 | } | |
d62a17ae | 1922 | bgp_info_add(rn, ri); |
1923 | } else { | |
1924 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
1925 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
1926 | bgp_unlock_node(rn); | |
1927 | return 0; | |
1928 | } | |
1929 | /* The attribute has changed. */ | |
1930 | /* Add (or update) attribute to hash. */ | |
1931 | attr_new = bgp_attr_intern(parent_ri->attr); | |
1932 | ||
1933 | /* Restore route, if needed. */ | |
1934 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
1935 | bgp_info_restore(rn, ri); | |
1936 | ||
1937 | /* Mark if nexthop has changed. */ | |
1938 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
1939 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
1940 | ||
1941 | /* Unintern existing, set to new. */ | |
1942 | bgp_attr_unintern(&ri->attr); | |
1943 | ri->attr = attr_new; | |
1944 | ri->uptime = bgp_clock(); | |
1945 | } | |
1946 | ||
1947 | /* Perform route selection and update zebra, if required. */ | |
1948 | ret = evpn_route_select_install(bgp, vpn, rn); | |
1949 | ||
1950 | return ret; | |
128ea8ab | 1951 | } |
1952 | ||
d3135ba3 | 1953 | /* |
1954 | * Uninstall route entry from the VRF routing table and send message | |
1955 | * to zebra, if appropriate. | |
1956 | */ | |
1957 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
1958 | struct prefix_evpn *evp, | |
1959 | struct bgp_info *parent_ri) | |
1960 | { | |
1961 | struct bgp_node *rn; | |
1962 | struct bgp_info *ri; | |
c4edf708 | 1963 | int ret = 0; |
d3135ba3 | 1964 | struct prefix p; |
1965 | struct prefix *pp = &p; | |
1966 | afi_t afi = 0; | |
1967 | safi_t safi = 0; | |
1eb88002 MK |
1968 | char buf[PREFIX_STRLEN]; |
1969 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 1970 | |
1971 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 1972 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 1973 | |
1eb88002 | 1974 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
1975 | zlog_debug( |
1976 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
1977 | prefix2str(evp, buf, sizeof(buf)), | |
1978 | prefix2str(pp, buf1, sizeof(buf)), | |
1979 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
1980 | } |
1981 | ||
d3135ba3 | 1982 | /* Locate route within the VRF. */ |
1983 | /* NOTE: There is no RD here. */ | |
3714a385 | 1984 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 1985 | afi = AFI_IP; |
1986 | safi = SAFI_UNICAST; | |
1987 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1988 | } else { | |
1989 | afi = AFI_IP6; | |
1990 | safi = SAFI_UNICAST; | |
1991 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
1992 | } | |
1993 | ||
1994 | if (!rn) | |
1995 | return 0; | |
1996 | ||
1997 | /* Find matching route entry. */ | |
1998 | for (ri = rn->info; ri; ri = ri->next) | |
1999 | if (ri->extra | |
2000 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2001 | break; | |
2002 | ||
2003 | if (!ri) | |
2004 | return 0; | |
2005 | ||
2006 | /* Mark entry for deletion */ | |
2007 | bgp_info_delete(rn, ri); | |
2008 | ||
2009 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2010 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2011 | |
2012 | /* Unlock route node. */ | |
2013 | bgp_unlock_node(rn); | |
2014 | ||
2015 | return ret; | |
2016 | } | |
2017 | ||
128ea8ab | 2018 | /* |
2019 | * Uninstall route entry from the VNI routing table and send message | |
2020 | * to zebra, if appropriate. | |
2021 | */ | |
d62a17ae | 2022 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2023 | struct prefix_evpn *p, | |
2024 | struct bgp_info *parent_ri) | |
128ea8ab | 2025 | { |
d62a17ae | 2026 | struct bgp_node *rn; |
2027 | struct bgp_info *ri; | |
2028 | int ret; | |
128ea8ab | 2029 | |
d62a17ae | 2030 | /* Locate route within the VNI. */ |
2031 | /* NOTE: There is no RD here. */ | |
2032 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2033 | if (!rn) | |
2034 | return 0; | |
128ea8ab | 2035 | |
d62a17ae | 2036 | /* Find matching route entry. */ |
2037 | for (ri = rn->info; ri; ri = ri->next) | |
2038 | if (ri->extra | |
2039 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2040 | break; | |
128ea8ab | 2041 | |
d62a17ae | 2042 | if (!ri) |
2043 | return 0; | |
128ea8ab | 2044 | |
d62a17ae | 2045 | /* Mark entry for deletion */ |
2046 | bgp_info_delete(rn, ri); | |
128ea8ab | 2047 | |
d62a17ae | 2048 | /* Perform route selection and update zebra, if required. */ |
2049 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2050 | |
d62a17ae | 2051 | /* Unlock route node. */ |
2052 | bgp_unlock_node(rn); | |
128ea8ab | 2053 | |
d62a17ae | 2054 | return ret; |
128ea8ab | 2055 | } |
2056 | ||
5ba238b7 MK |
2057 | /* |
2058 | * Given a route entry and a VRF, see if this route entry should be | |
2059 | * imported into the VRF i.e., RTs match. | |
2060 | */ | |
996c9314 | 2061 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2062 | { |
2063 | struct attr *attr = ri->attr; | |
2064 | struct ecommunity *ecom; | |
2065 | int i; | |
2066 | ||
2067 | assert(attr); | |
2068 | /* Route should have valid RT to be even considered. */ | |
2069 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2070 | return 0; | |
2071 | ||
2072 | ecom = attr->ecommunity; | |
2073 | if (!ecom || !ecom->size) | |
2074 | return 0; | |
2075 | ||
2076 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2077 | * matches, we're done. | |
2078 | */ | |
2079 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2080 | uint8_t *pnt; |
2081 | uint8_t type, sub_type; | |
5ba238b7 MK |
2082 | struct ecommunity_val *eval; |
2083 | struct ecommunity_val eval_tmp; | |
2084 | struct vrf_irt_node *irt; | |
2085 | ||
2086 | /* Only deal with RTs */ | |
2087 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2088 | eval = (struct ecommunity_val *)(ecom->val | |
2089 | + (i * ECOMMUNITY_SIZE)); | |
2090 | type = *pnt++; | |
2091 | sub_type = *pnt++; | |
2092 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2093 | continue; | |
2094 | ||
2095 | /* See if this RT matches specified VNIs import RTs */ | |
2096 | irt = lookup_vrf_import_rt(eval); | |
2097 | if (irt && irt->vrfs) | |
2098 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
2099 | return 1; | |
2100 | ||
2101 | /* Also check for non-exact match. In this, we mask out the AS | |
2102 | * and | |
2103 | * only check on the local-admin sub-field. This is to | |
2104 | * facilitate using | |
2105 | * VNI as the RT for EBGP peering too. | |
2106 | */ | |
2107 | irt = NULL; | |
2108 | if (type == ECOMMUNITY_ENCODE_AS | |
2109 | || type == ECOMMUNITY_ENCODE_AS4 | |
2110 | || type == ECOMMUNITY_ENCODE_IP) { | |
2111 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2112 | mask_ecom_global_admin(&eval_tmp, eval); | |
2113 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2114 | } | |
2115 | if (irt && irt->vrfs) | |
2116 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) | |
2117 | return 1; | |
2118 | } | |
2119 | ||
2120 | return 0; | |
2121 | } | |
2122 | ||
128ea8ab | 2123 | /* |
2124 | * Given a route entry and a VNI, see if this route entry should be | |
2125 | * imported into the VNI i.e., RTs match. | |
2126 | */ | |
d62a17ae | 2127 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2128 | struct bgp_info *ri) | |
2129 | { | |
2130 | struct attr *attr = ri->attr; | |
2131 | struct ecommunity *ecom; | |
2132 | int i; | |
2133 | ||
2134 | assert(attr); | |
2135 | /* Route should have valid RT to be even considered. */ | |
2136 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2137 | return 0; | |
2138 | ||
2139 | ecom = attr->ecommunity; | |
2140 | if (!ecom || !ecom->size) | |
2141 | return 0; | |
2142 | ||
2143 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2144 | * matches, we're done. | |
2145 | */ | |
2146 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2147 | uint8_t *pnt; |
2148 | uint8_t type, sub_type; | |
d62a17ae | 2149 | struct ecommunity_val *eval; |
2150 | struct ecommunity_val eval_tmp; | |
2151 | struct irt_node *irt; | |
2152 | ||
2153 | /* Only deal with RTs */ | |
2154 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2155 | eval = (struct ecommunity_val *)(ecom->val | |
2156 | + (i * ECOMMUNITY_SIZE)); | |
2157 | type = *pnt++; | |
2158 | sub_type = *pnt++; | |
2159 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2160 | continue; | |
2161 | ||
2162 | /* See if this RT matches specified VNIs import RTs */ | |
2163 | irt = lookup_import_rt(bgp, eval); | |
2164 | if (irt && irt->vnis) | |
2165 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2166 | return 1; | |
2167 | ||
2168 | /* Also check for non-exact match. In this, we mask out the AS | |
2169 | * and | |
2170 | * only check on the local-admin sub-field. This is to | |
2171 | * facilitate using | |
2172 | * VNI as the RT for EBGP peering too. | |
2173 | */ | |
2174 | irt = NULL; | |
2175 | if (type == ECOMMUNITY_ENCODE_AS | |
2176 | || type == ECOMMUNITY_ENCODE_AS4 | |
2177 | || type == ECOMMUNITY_ENCODE_IP) { | |
2178 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2179 | mask_ecom_global_admin(&eval_tmp, eval); | |
2180 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2181 | } | |
2182 | if (irt && irt->vnis) | |
2183 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) | |
2184 | return 1; | |
2185 | } | |
2186 | ||
2187 | return 0; | |
128ea8ab | 2188 | } |
2189 | ||
5ba238b7 MK |
2190 | /* |
2191 | * Install or uninstall mac-ip routes are appropriate for this | |
2192 | * particular VRF. | |
2193 | */ | |
996c9314 | 2194 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2195 | { |
2196 | afi_t afi; | |
2197 | safi_t safi; | |
2198 | struct bgp_node *rd_rn, *rn; | |
2199 | struct bgp_table *table; | |
2200 | struct bgp_info *ri; | |
2201 | int ret; | |
2202 | char buf[PREFIX_STRLEN]; | |
2203 | struct bgp *bgp_def = NULL; | |
2204 | ||
2205 | afi = AFI_L2VPN; | |
2206 | safi = SAFI_EVPN; | |
2207 | bgp_def = bgp_get_default(); | |
2208 | if (!bgp_def) | |
2209 | return -1; | |
2210 | ||
2211 | /* Walk entire global routing table and evaluate routes which could be | |
2212 | * imported into this VRF. Note that we need to loop through all global | |
2213 | * routes to determine which route matches the import rt on vrf | |
2214 | */ | |
2215 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2216 | rd_rn = bgp_route_next(rd_rn)) { | |
2217 | table = (struct bgp_table *)(rd_rn->info); | |
2218 | if (!table) | |
2219 | continue; | |
2220 | ||
2221 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2222 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2223 | ||
1eb88002 | 2224 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2225 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2226 | || evp->prefix.route_type | |
2227 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2228 | continue; |
2229 | ||
1eb88002 | 2230 | /* if not a mac+ip route skip this route */ |
3714a385 | 2231 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2232 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2233 | continue; |
2234 | ||
5ba238b7 MK |
2235 | for (ri = rn->info; ri; ri = ri->next) { |
2236 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2237 | * this VRF. |
2238 | */ | |
5ba238b7 MK |
2239 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2240 | && ri->type == ZEBRA_ROUTE_BGP | |
2241 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2242 | continue; | |
2243 | ||
2244 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2245 | if (install) | |
996c9314 | 2246 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2247 | bgp_vrf, evp, ri); |
2248 | else | |
996c9314 | 2249 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2250 | bgp_vrf, evp, ri); |
2251 | ||
2252 | if (ret) { | |
2253 | zlog_err( | |
2254 | "Failed to %s EVPN %s route in VRF %s", | |
2255 | install ? "install" | |
2256 | : "uninstall", | |
2257 | prefix2str(evp, buf, | |
2258 | sizeof(buf)), | |
996c9314 LB |
2259 | vrf_id_to_name( |
2260 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2261 | return ret; |
2262 | } | |
2263 | } | |
2264 | } | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | return 0; | |
2269 | } | |
2270 | ||
128ea8ab | 2271 | /* |
2272 | * Install or uninstall routes of specified type that are appropriate for this | |
2273 | * particular VNI. | |
2274 | */ | |
d62a17ae | 2275 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2276 | struct bgpevpn *vpn, | |
2277 | bgp_evpn_route_type rtype, | |
2278 | int install) | |
2279 | { | |
0291c246 MK |
2280 | afi_t afi; |
2281 | safi_t safi; | |
2282 | struct bgp_node *rd_rn, *rn; | |
2283 | struct bgp_table *table; | |
2284 | struct bgp_info *ri; | |
2285 | int ret; | |
d62a17ae | 2286 | |
2287 | afi = AFI_L2VPN; | |
2288 | safi = SAFI_EVPN; | |
2289 | ||
2290 | /* Walk entire global routing table and evaluate routes which could be | |
2291 | * imported into this VPN. Note that we cannot just look at the routes | |
2292 | * for | |
2293 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2294 | * RD. | |
2295 | */ | |
2296 | /* EVPN routes are a 2-level table. */ | |
2297 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2298 | rd_rn = bgp_route_next(rd_rn)) { | |
2299 | table = (struct bgp_table *)(rd_rn->info); | |
2300 | if (!table) | |
2301 | continue; | |
2302 | ||
2303 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2304 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2305 | ||
2306 | if (evp->prefix.route_type != rtype) | |
2307 | continue; | |
2308 | ||
2309 | for (ri = rn->info; ri; ri = ri->next) { | |
2310 | /* Consider "valid" remote routes applicable for | |
2311 | * this VNI. */ | |
2312 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2313 | && ri->type == ZEBRA_ROUTE_BGP | |
2314 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2315 | continue; | |
2316 | ||
2317 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
2318 | if (install) | |
2319 | ret = install_evpn_route_entry( | |
60466a63 | 2320 | bgp, vpn, evp, ri); |
d62a17ae | 2321 | else |
2322 | ret = uninstall_evpn_route_entry( | |
2323 | bgp, vpn, evp, ri); | |
2324 | ||
2325 | if (ret) { | |
2326 | zlog_err( | |
2327 | "%u: Failed to %s EVPN %s route in VNI %u", | |
2328 | bgp->vrf_id, | |
2329 | install ? "install" | |
2330 | : "uninstall", | |
2331 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
2332 | ? "MACIP" | |
2333 | : "IMET", | |
2334 | vpn->vni); | |
2335 | return ret; | |
2336 | } | |
2337 | } | |
2338 | } | |
2339 | } | |
2340 | } | |
2341 | ||
2342 | return 0; | |
128ea8ab | 2343 | } |
2344 | ||
5ba238b7 | 2345 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 2346 | * is invoked upon l3vni-add or l3vni import rt change |
2347 | */ | |
5ba238b7 MK |
2348 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
2349 | { | |
2350 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
2351 | return 0; | |
2352 | } | |
2353 | ||
128ea8ab | 2354 | /* |
2355 | * Install any existing remote routes applicable for this VNI into its | |
2356 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
2357 | * RT is changed. | |
2358 | */ | |
d62a17ae | 2359 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2360 | { |
d62a17ae | 2361 | int ret; |
128ea8ab | 2362 | |
d62a17ae | 2363 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
2364 | * for this VNI. | |
2365 | */ | |
2366 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
2367 | 1); | |
2368 | if (ret) | |
2369 | return ret; | |
128ea8ab | 2370 | |
d62a17ae | 2371 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
2372 | 1); | |
128ea8ab | 2373 | } |
2374 | ||
5ba238b7 MK |
2375 | /* uninstall routes from l3vni vrf. */ |
2376 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
2377 | { | |
2378 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
2379 | return 0; | |
2380 | } | |
2381 | ||
90e60aa7 | 2382 | /* |
2383 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
2384 | * this is invoked is upon an import RT change. | |
2385 | */ | |
d62a17ae | 2386 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2387 | { |
d62a17ae | 2388 | int ret; |
90e60aa7 | 2389 | |
d62a17ae | 2390 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
2391 | * applicable | |
2392 | * for this VNI. | |
2393 | */ | |
2394 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
2395 | 0); | |
2396 | if (ret) | |
2397 | return ret; | |
90e60aa7 | 2398 | |
d62a17ae | 2399 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
2400 | 0); | |
90e60aa7 | 2401 | } |
2402 | ||
d3135ba3 | 2403 | /* |
2404 | * Install or uninstall route in matching VRFs (list). | |
2405 | */ | |
2406 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
2407 | safi_t safi, struct prefix_evpn *evp, | |
2408 | struct bgp_info *ri, | |
2409 | struct list *vrfs, int install) | |
2410 | { | |
2411 | char buf[PREFIX2STR_BUFFER]; | |
2412 | struct bgp *bgp_vrf; | |
2413 | struct listnode *node, *nnode; | |
2414 | ||
90264d64 | 2415 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
2416 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2417 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 2418 | return 0; |
2419 | ||
90264d64 | 2420 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 2421 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 2422 | && !(is_evpn_prefix_ipaddr_v4(evp) |
2423 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
2424 | return 0; |
2425 | ||
d3135ba3 | 2426 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
2427 | int ret; | |
2428 | ||
2429 | if (install) | |
996c9314 | 2430 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 2431 | else |
996c9314 LB |
2432 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
2433 | ri); | |
d3135ba3 | 2434 | |
2435 | if (ret) { | |
2436 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
2437 | bgp_def->vrf_id, | |
2438 | install ? "install" : "uninstall", | |
2439 | prefix2str(evp, buf, sizeof(buf)), | |
2440 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2441 | return ret; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | return 0; | |
2446 | } | |
2447 | ||
128ea8ab | 2448 | /* |
2449 | * Install or uninstall route in matching VNIs (list). | |
2450 | */ | |
d62a17ae | 2451 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
2452 | safi_t safi, struct prefix_evpn *evp, | |
2453 | struct bgp_info *ri, | |
2454 | struct list *vnis, int install) | |
128ea8ab | 2455 | { |
d62a17ae | 2456 | struct bgpevpn *vpn; |
2457 | struct listnode *node, *nnode; | |
128ea8ab | 2458 | |
d62a17ae | 2459 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
2460 | int ret; | |
128ea8ab | 2461 | |
d62a17ae | 2462 | if (!is_vni_live(vpn)) |
2463 | continue; | |
128ea8ab | 2464 | |
d62a17ae | 2465 | if (install) |
2466 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
2467 | else | |
2468 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 2469 | |
d62a17ae | 2470 | if (ret) { |
2471 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
2472 | bgp->vrf_id, install ? "install" : "uninstall", | |
2473 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2474 | ? "MACIP" | |
2475 | : "IMET", | |
2476 | vpn->vni); | |
2477 | return ret; | |
2478 | } | |
2479 | } | |
128ea8ab | 2480 | |
d62a17ae | 2481 | return 0; |
128ea8ab | 2482 | } |
2483 | ||
2484 | /* | |
2485 | * Install or uninstall route for appropriate VNIs. | |
2486 | */ | |
d62a17ae | 2487 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
2488 | struct prefix *p, struct bgp_info *ri, | |
2489 | int import) | |
2490 | { | |
2491 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
2492 | struct attr *attr = ri->attr; | |
2493 | struct ecommunity *ecom; | |
2494 | int i; | |
2495 | ||
2496 | assert(attr); | |
2497 | ||
90264d64 | 2498 | /* Only type-2 and type-3 and type-5 are supported currently */ |
d62a17ae | 2499 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 MK |
2500 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
2501 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d62a17ae | 2502 | return 0; |
2503 | ||
2504 | /* If we don't have Route Target, nothing much to do. */ | |
2505 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2506 | return 0; | |
2507 | ||
2508 | ecom = attr->ecommunity; | |
2509 | if (!ecom || !ecom->size) | |
2510 | return -1; | |
2511 | ||
90264d64 MK |
2512 | /* For each extended community RT, see which VNIs/VRFs match and import |
2513 | * the route into matching VNIs/VRFs. | |
d62a17ae | 2514 | */ |
2515 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2516 | uint8_t *pnt; |
2517 | uint8_t type, sub_type; | |
d62a17ae | 2518 | struct ecommunity_val *eval; |
2519 | struct ecommunity_val eval_tmp; | |
996c9314 | 2520 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 2521 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
d62a17ae | 2522 | |
2523 | /* Only deal with RTs */ | |
2524 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2525 | eval = (struct ecommunity_val *)(ecom->val | |
2526 | + (i * ECOMMUNITY_SIZE)); | |
2527 | type = *pnt++; | |
2528 | sub_type = *pnt++; | |
2529 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2530 | continue; | |
2531 | ||
90264d64 | 2532 | /* Import route into matching l2-vnis (type-2/type-3 routes go |
523cafc4 | 2533 | * into l2vni table) |
2534 | */ | |
d62a17ae | 2535 | irt = lookup_import_rt(bgp, eval); |
2536 | if (irt && irt->vnis) | |
2537 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2538 | irt->vnis, import); | |
2539 | ||
90264d64 | 2540 | /* Import route into matching l3-vnis (type-2/type-5 routes go |
523cafc4 | 2541 | * into l3vni/vrf table) |
2542 | */ | |
d3135ba3 | 2543 | vrf_irt = lookup_vrf_import_rt(eval); |
2544 | if (vrf_irt && vrf_irt->vrfs) | |
2545 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri, | |
2546 | vrf_irt->vrfs, import); | |
2547 | ||
90264d64 MK |
2548 | /* Also check for non-exact match. In this, |
2549 | * we mask out the AS and | |
2550 | * only check on the local-admin sub-field. | |
2551 | * This is to facilitate using | |
d62a17ae | 2552 | * VNI as the RT for EBGP peering too. |
2553 | */ | |
2554 | irt = NULL; | |
d3135ba3 | 2555 | vrf_irt = NULL; |
d62a17ae | 2556 | if (type == ECOMMUNITY_ENCODE_AS |
2557 | || type == ECOMMUNITY_ENCODE_AS4 | |
2558 | || type == ECOMMUNITY_ENCODE_IP) { | |
2559 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2560 | mask_ecom_global_admin(&eval_tmp, eval); | |
2561 | irt = lookup_import_rt(bgp, &eval_tmp); | |
d3135ba3 | 2562 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); |
d62a17ae | 2563 | } |
2564 | if (irt && irt->vnis) | |
2565 | install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri, | |
2566 | irt->vnis, import); | |
d3135ba3 | 2567 | if (vrf_irt && vrf_irt->vrfs) |
996c9314 LB |
2568 | install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri, |
2569 | vrf_irt->vrfs, import); | |
d62a17ae | 2570 | } |
2571 | ||
2572 | return 0; | |
128ea8ab | 2573 | } |
2574 | ||
80b140af MK |
2575 | /* delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 |
2576 | * routes */ | |
2577 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) | |
2578 | { | |
2579 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
2580 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
2581 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
2582 | |
2583 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
2584 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
2585 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
2586 | } |
2587 | ||
2588 | /* update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
2589 | * routes */ | |
2590 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) | |
2591 | { | |
2592 | /* update all ipv4 routes */ | |
fdf19f06 MK |
2593 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
2594 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
2595 | |
2596 | /* update all ipv6 routes */ | |
fdf19f06 MK |
2597 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
2598 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
2599 | } |
2600 | ||
676f83b9 | 2601 | /* |
2602 | * update and advertise local routes for a VRF as type-5 routes. | |
2603 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
2604 | * done in the global route table using the routes which already exist in the | |
2605 | * VRF routing table | |
2606 | */ | |
80b140af | 2607 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2608 | { |
80b140af MK |
2609 | /* skip if the RD is configured */ |
2610 | if (is_vrf_rd_configured(bgp_vrf)) | |
2611 | return; | |
2612 | ||
2613 | /* derive the RD for the VRF based on new router-id */ | |
2614 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
2615 | ||
2616 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
2617 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 2618 | } |
2619 | ||
2620 | /* | |
2621 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
2622 | * This is invoked upon VRF RD change. The processing is done only from global | |
2623 | * table. | |
2624 | */ | |
80b140af | 2625 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 2626 | { |
80b140af MK |
2627 | /* skip if the RD is configured */ |
2628 | if (is_vrf_rd_configured(bgp_vrf)) | |
2629 | return; | |
2630 | ||
2631 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
2632 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 2633 | } |
2634 | ||
90e60aa7 | 2635 | /* |
2636 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
2637 | * change. Note that the processing is done only on the global route table | |
2638 | * using routes that already exist in the per-VNI table. | |
2639 | */ | |
d62a17ae | 2640 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2641 | { | |
2642 | struct prefix_evpn p; | |
2643 | struct bgp_node *rn, *global_rn; | |
2644 | struct bgp_info *ri, *global_ri; | |
2645 | struct attr *attr; | |
2646 | afi_t afi = AFI_L2VPN; | |
2647 | safi_t safi = SAFI_EVPN; | |
2648 | ||
2649 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
2650 | * attributes to create and advertise the type-3 route for this VNI | |
2651 | * in the global table. | |
2652 | */ | |
2653 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2654 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
2655 | if (!rn) /* unexpected */ | |
2656 | return 0; | |
2657 | for (ri = rn->info; ri; ri = ri->next) | |
2658 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
2659 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2660 | break; | |
2661 | if (!ri) /* unexpected */ | |
2662 | return 0; | |
2663 | attr = ri->attr; | |
2664 | ||
2665 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2666 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
2667 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
2668 | 0); | |
d62a17ae | 2669 | |
2670 | /* Schedule for processing and unlock node. */ | |
2671 | bgp_process(bgp, global_rn, afi, safi); | |
2672 | bgp_unlock_node(global_rn); | |
2673 | ||
2674 | /* Now, walk this VNI's route table and use the route and its attribute | |
2675 | * to create and schedule route in global table. | |
2676 | */ | |
2677 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2678 | rn = bgp_route_next(rn)) { | |
2679 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2680 | ||
2681 | /* Identify MAC-IP local routes. */ | |
2682 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2683 | continue; | |
2684 | ||
2685 | for (ri = rn->info; ri; ri = ri->next) | |
2686 | if (ri->peer == bgp->peer_self | |
2687 | && ri->type == ZEBRA_ROUTE_BGP | |
2688 | && ri->sub_type == BGP_ROUTE_STATIC) | |
2689 | break; | |
2690 | if (!ri) | |
2691 | continue; | |
2692 | ||
2693 | /* Create route in global routing table using this route entry's | |
2694 | * attribute. | |
2695 | */ | |
2696 | attr = ri->attr; | |
2697 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2698 | (struct prefix *)evp, &vpn->prd); | |
2699 | assert(global_rn); | |
2700 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 2701 | 0, &global_ri, 0); |
d62a17ae | 2702 | |
2703 | /* Schedule for processing and unlock node. */ | |
2704 | bgp_process(bgp, global_rn, afi, safi); | |
2705 | bgp_unlock_node(global_rn); | |
2706 | } | |
2707 | ||
2708 | return 0; | |
90e60aa7 | 2709 | } |
2710 | ||
2711 | /* | |
2712 | * Delete (and withdraw) local routes for a VNI - only from the global | |
2713 | * table. Invoked upon router-id change. | |
2714 | */ | |
d62a17ae | 2715 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 2716 | { |
d62a17ae | 2717 | int ret; |
2718 | struct prefix_evpn p; | |
2719 | struct bgp_node *global_rn; | |
2720 | struct bgp_info *ri; | |
2721 | afi_t afi = AFI_L2VPN; | |
2722 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 2723 | |
d62a17ae | 2724 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2725 | * for this VNI - from the global table. | |
2726 | */ | |
2727 | ret = delete_global_type2_routes(bgp, vpn); | |
2728 | if (ret) | |
2729 | return ret; | |
90e60aa7 | 2730 | |
d62a17ae | 2731 | /* Remove type-3 route for this VNI from global table. */ |
2732 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2733 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2734 | (struct prefix *)&p, &vpn->prd); | |
2735 | if (global_rn) { | |
2736 | /* Delete route entry in the global EVPN table. */ | |
2737 | delete_evpn_route_entry(bgp, vpn, afi, safi, global_rn, &ri); | |
90e60aa7 | 2738 | |
d62a17ae | 2739 | /* Schedule for processing - withdraws to peers happen from |
2740 | * this table. | |
2741 | */ | |
2742 | if (ri) | |
2743 | bgp_process(bgp, global_rn, afi, safi); | |
2744 | bgp_unlock_node(global_rn); | |
2745 | } | |
90e60aa7 | 2746 | |
d62a17ae | 2747 | return 0; |
90e60aa7 | 2748 | } |
2749 | ||
2d48ee25 | 2750 | /* |
2751 | * Handle router-id change. Update and advertise local routes corresponding | |
2752 | * to this VNI from peers. Note that this is invoked after updating the | |
2753 | * router-id. The routes in the per-VNI table are used to create routes in | |
2754 | * the global table and schedule them. | |
2755 | */ | |
d62a17ae | 2756 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2757 | { |
d62a17ae | 2758 | struct bgpevpn *vpn; |
2d48ee25 | 2759 | |
d62a17ae | 2760 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2761 | |
d62a17ae | 2762 | if (!vpn) { |
2763 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2764 | return; | |
2765 | } | |
2d48ee25 | 2766 | |
d62a17ae | 2767 | /* Skip VNIs with configured RD. */ |
2768 | if (is_rd_configured(vpn)) | |
2769 | return; | |
2d48ee25 | 2770 | |
d62a17ae | 2771 | bgp_evpn_derive_auto_rd(bgp, vpn); |
2772 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 2773 | } |
2774 | ||
2775 | /* | |
2776 | * Handle router-id change. Delete and withdraw local routes corresponding | |
2777 | * to this VNI from peers. Note that this is invoked prior to updating | |
2778 | * the router-id and is done only on the global route table, the routes | |
2779 | * are needed in the per-VNI table to re-advertise with new router id. | |
2780 | */ | |
d62a17ae | 2781 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 2782 | { |
d62a17ae | 2783 | struct bgpevpn *vpn; |
2d48ee25 | 2784 | |
d62a17ae | 2785 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 2786 | |
d62a17ae | 2787 | if (!vpn) { |
2788 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
2789 | return; | |
2790 | } | |
2d48ee25 | 2791 | |
d62a17ae | 2792 | /* Skip VNIs with configured RD. */ |
2793 | if (is_rd_configured(vpn)) | |
2794 | return; | |
2d48ee25 | 2795 | |
d62a17ae | 2796 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 2797 | } |
2798 | ||
128ea8ab | 2799 | /* |
2800 | * Process received EVPN type-2 route (advertise or withdraw). | |
2801 | */ | |
d62a17ae | 2802 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2803 | struct attr *attr, uint8_t *pfx, int psize, |
2804 | uint32_t addpath_id) | |
d62a17ae | 2805 | { |
2806 | struct prefix_rd prd; | |
2807 | struct prefix_evpn p; | |
554cd77a | 2808 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
2809 | uint8_t ipaddr_len; |
2810 | uint8_t macaddr_len; | |
b57ba6d2 | 2811 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 2812 | uint32_t num_labels = 0; |
554cd77a | 2813 | uint32_t eth_tag; |
d62a17ae | 2814 | int ret; |
2815 | ||
2816 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
2817 | * additional 3 bytes if there is a second label (VNI): | |
2818 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
2819 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
2820 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
2821 | */ | |
2822 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
2823 | && psize != 40 && psize != 52) { | |
2824 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
2825 | peer->bgp->vrf_id, peer->host, psize); | |
2826 | return -1; | |
2827 | } | |
2828 | ||
554cd77a VB |
2829 | memset(&evpn, 0, sizeof(evpn)); |
2830 | ||
d62a17ae | 2831 | /* Make prefix_rd */ |
2832 | prd.family = AF_UNSPEC; | |
2833 | prd.prefixlen = 64; | |
2834 | memcpy(&prd.val, pfx, 8); | |
2835 | pfx += 8; | |
2836 | ||
2837 | /* Make EVPN prefix. */ | |
2838 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2839 | p.family = AF_EVPN; |
d62a17ae | 2840 | p.prefixlen = EVPN_TYPE_2_ROUTE_PREFIXLEN; |
2841 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; | |
2842 | ||
554cd77a VB |
2843 | /* Copy Ethernet Seg Identifier */ |
2844 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
2845 | pfx += ESI_LEN; | |
d62a17ae | 2846 | |
554cd77a VB |
2847 | /* Copy Ethernet Tag */ |
2848 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 2849 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 2850 | pfx += 4; |
2851 | ||
2852 | /* Get the MAC Addr len */ | |
2853 | macaddr_len = *pfx++; | |
2854 | ||
2855 | /* Get the MAC Addr */ | |
28328ea9 | 2856 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 2857 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 2858 | pfx += ETH_ALEN; |
d62a17ae | 2859 | } else { |
2860 | zlog_err( | |
2861 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
2862 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
2863 | return -1; | |
2864 | } | |
2865 | ||
2866 | ||
2867 | /* Get the IP. */ | |
2868 | ipaddr_len = *pfx++; | |
2869 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
2870 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
2871 | zlog_err( | |
2872 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
2873 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2874 | return -1; | |
2875 | } | |
2876 | ||
2877 | if (ipaddr_len) { | |
2878 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 2879 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 2880 | ? IPADDR_V4 |
2881 | : IPADDR_V6; | |
3714a385 | 2882 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 2883 | } |
2884 | pfx += ipaddr_len; | |
2885 | ||
b57ba6d2 MK |
2886 | /* Get the VNI(s). Stored as bytes here. */ |
2887 | num_labels++; | |
2888 | memset(label, 0, sizeof(label)); | |
2889 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 2890 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
2891 | psize -= (33 + ipaddr_len); |
2892 | /* Do we have a second VNI? */ | |
2893 | if (psize) { | |
2894 | num_labels++; | |
2895 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 2896 | /* |
2897 | * If in future, we are required to access additional fields, | |
996c9314 LB |
2898 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
2899 | * the next field | |
6b11bd8d | 2900 | */ |
b57ba6d2 | 2901 | } |
d62a17ae | 2902 | |
2903 | /* Process the route. */ | |
2904 | if (attr) | |
2905 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2906 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 2907 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 2908 | else |
2909 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2910 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 2911 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 2912 | return ret; |
128ea8ab | 2913 | } |
2914 | ||
2915 | /* | |
2916 | * Process received EVPN type-3 route (advertise or withdraw). | |
2917 | */ | |
d62a17ae | 2918 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2919 | struct attr *attr, uint8_t *pfx, int psize, |
2920 | uint32_t addpath_id) | |
d62a17ae | 2921 | { |
2922 | struct prefix_rd prd; | |
2923 | struct prefix_evpn p; | |
d7c0a89a | 2924 | uint8_t ipaddr_len; |
554cd77a | 2925 | uint32_t eth_tag; |
d62a17ae | 2926 | int ret; |
2927 | ||
2928 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
2929 | * IP len (1) and IP (4 or 16). | |
2930 | */ | |
2931 | if (psize != 17 && psize != 29) { | |
2932 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
2933 | peer->bgp->vrf_id, peer->host, psize); | |
2934 | return -1; | |
2935 | } | |
2936 | ||
7fd077aa | 2937 | /* If PMSI is present, log if it is anything other than IR. |
2938 | * Note: We just simply ignore the values as it is not clear if | |
2939 | * doing anything else is better. | |
2940 | */ | |
2941 | if (attr && | |
2942 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2943 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
d0be47e8 | 2944 | zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
7fd077aa | 2945 | peer->bgp->vrf_id, peer->host, |
2946 | attr->pmsi_tnl_type); | |
2947 | } | |
2948 | } | |
2949 | ||
d62a17ae | 2950 | /* Make prefix_rd */ |
2951 | prd.family = AF_UNSPEC; | |
2952 | prd.prefixlen = 64; | |
2953 | memcpy(&prd.val, pfx, 8); | |
2954 | pfx += 8; | |
2955 | ||
2956 | /* Make EVPN prefix. */ | |
2957 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 2958 | p.family = AF_EVPN; |
d62a17ae | 2959 | p.prefixlen = EVPN_TYPE_3_ROUTE_PREFIXLEN; |
2960 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; | |
2961 | ||
554cd77a VB |
2962 | /* Copy Ethernet Tag */ |
2963 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 2964 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 2965 | pfx += 4; |
2966 | ||
2967 | /* Get the IP. */ | |
2968 | ipaddr_len = *pfx++; | |
2969 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 2970 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
2971 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 2972 | } else { |
2973 | zlog_err( | |
2974 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
2975 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
2976 | return -1; | |
2977 | } | |
2978 | ||
2979 | /* Process the route. */ | |
2980 | if (attr) | |
2981 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
2982 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 2983 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 2984 | else |
2985 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
2986 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 2987 | &prd, NULL, 0, NULL); |
d62a17ae | 2988 | return ret; |
128ea8ab | 2989 | } |
2990 | ||
2991 | /* | |
2992 | * Process received EVPN type-5 route (advertise or withdraw). | |
2993 | */ | |
d62a17ae | 2994 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
2995 | struct attr *attr, uint8_t *pfx, int psize, |
2996 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 2997 | { |
2998 | struct prefix_rd prd; | |
2999 | struct prefix_evpn p; | |
3000 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3001 | uint8_t ippfx_len; |
3002 | uint32_t eth_tag; | |
b57ba6d2 | 3003 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3004 | int ret; |
3005 | ||
3006 | /* Type-5 route should be 34 or 58 bytes: | |
3007 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3008 | * GW (4 or 16) and VNI (3). | |
3009 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3010 | */ | |
3011 | if (psize != 34 && psize != 58) { | |
3012 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
3013 | peer->bgp->vrf_id, peer->host, psize); | |
3014 | return -1; | |
3015 | } | |
3016 | ||
3017 | /* Make prefix_rd */ | |
3018 | prd.family = AF_UNSPEC; | |
3019 | prd.prefixlen = 64; | |
3020 | memcpy(&prd.val, pfx, 8); | |
3021 | pfx += 8; | |
3022 | ||
3023 | /* Make EVPN prefix. */ | |
3024 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3025 | p.family = AF_EVPN; |
e9fc2840 | 3026 | p.prefixlen = EVPN_TYPE_5_ROUTE_PREFIXLEN; |
d62a17ae | 3027 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3028 | ||
3029 | /* Additional information outside of prefix - ESI and GW IP */ | |
3030 | memset(&evpn, 0, sizeof(evpn)); | |
3031 | ||
3032 | /* Fetch ESI */ | |
3033 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3034 | pfx += 10; | |
3035 | ||
3036 | /* Fetch Ethernet Tag. */ | |
3037 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3038 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3039 | pfx += 4; |
3040 | ||
3041 | /* Fetch IP prefix length. */ | |
3042 | ippfx_len = *pfx++; | |
3043 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
3044 | zlog_err( | |
3045 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
3046 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3047 | return -1; | |
3048 | } | |
3714a385 | 3049 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3050 | |
3051 | /* Determine IPv4 or IPv6 prefix */ | |
3052 | /* Since the address and GW are from the same family, this just becomes | |
3053 | * a simple check on the total size. | |
3054 | */ | |
3055 | if (psize == 34) { | |
3714a385 | 3056 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3057 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3058 | pfx += 4; |
3059 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3060 | pfx += 4; | |
d62a17ae | 3061 | } else { |
3714a385 | 3062 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3063 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3064 | pfx += 16; |
3065 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3066 | pfx += 16; | |
d62a17ae | 3067 | } |
3068 | ||
b57ba6d2 MK |
3069 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3070 | memset(&label, 0, sizeof(label)); | |
3071 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3072 | |
3073 | /* | |
3074 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3075 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3076 | * field | |
6b11bd8d | 3077 | */ |
d62a17ae | 3078 | |
3079 | /* Process the route. */ | |
3080 | if (!withdraw) | |
3081 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3082 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3083 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3084 | else |
3085 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3086 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3087 | &prd, &label, 1, &evpn); |
d62a17ae | 3088 | |
3089 | return ret; | |
3090 | } | |
3091 | ||
3092 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3093 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3094 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3095 | { |
3096 | int len; | |
3097 | char temp[16]; | |
3098 | struct evpn_addr *p_evpn_p; | |
3099 | ||
3100 | memset(&temp, 0, 16); | |
b03b8898 | 3101 | if (p->family != AF_EVPN) |
d62a17ae | 3102 | return; |
3103 | p_evpn_p = &(p->u.prefix_evpn); | |
3104 | ||
e9fc2840 | 3105 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3106 | IP and GW-IP have to be both ipv4 or ipv6 |
3107 | */ | |
3714a385 | 3108 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3109 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3110 | else |
e9fc2840 | 3111 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3112 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3113 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3114 | stream_put(s, prd->val, 8); | |
0af35d90 | 3115 | if (attr) |
d62a17ae | 3116 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3117 | else | |
3118 | stream_put(s, &temp, 10); | |
3714a385 | 3119 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3120 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3121 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3122 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3123 | else |
3714a385 | 3124 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3125 | if (attr) { |
3714a385 | 3126 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3127 | stream_put_ipv4(s, |
3128 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3129 | else | |
3130 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3131 | } else { | |
3714a385 | 3132 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3133 | stream_put_ipv4(s, 0); |
3134 | else | |
3135 | stream_put(s, &temp, 16); | |
3136 | } | |
3137 | ||
b57ba6d2 | 3138 | if (num_labels) |
d62a17ae | 3139 | stream_put(s, label, 3); |
3140 | else | |
3141 | stream_put3(s, 0); | |
128ea8ab | 3142 | } |
3143 | ||
3144 | /* | |
3145 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3146 | */ | |
d62a17ae | 3147 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3148 | { |
d62a17ae | 3149 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3150 | |
d62a17ae | 3151 | /* Remove EVPN routes and schedule for processing. */ |
3152 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3153 | |
d62a17ae | 3154 | /* Clear "live" flag and see if hash needs to be freed. */ |
3155 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3156 | if (!is_vni_configured(vpn)) | |
3157 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3158 | } |
3159 | ||
3160 | /* | |
3161 | * Free a VNI entry; iterator function called during cleanup. | |
3162 | */ | |
d62a17ae | 3163 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3164 | { |
d62a17ae | 3165 | struct bgpevpn *vpn; |
128ea8ab | 3166 | |
d62a17ae | 3167 | vpn = (struct bgpevpn *)backet->data; |
3168 | delete_all_vni_routes(bgp, vpn); | |
3169 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3170 | } |
3171 | ||
c581d8b0 MK |
3172 | /* |
3173 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3174 | */ | |
3175 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3176 | { | |
10ebe1ab MK |
3177 | struct bgp *bgp_def = NULL; |
3178 | ||
c581d8b0 | 3179 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
3180 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
3181 | ||
3182 | /* Map RT to VRF */ | |
3183 | bgp_def = bgp_get_default(); | |
3184 | if (!bgp_def) | |
3185 | return; | |
3186 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
3187 | } |
3188 | ||
3189 | /* | |
3190 | * Delete AUTO import RT from BGP VRF - L3VNI | |
3191 | */ | |
3192 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
3193 | { | |
3194 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
3195 | } | |
3196 | ||
3197 | /* | |
3198 | * Derive AUTO export RT for BGP VRF - L3VNI | |
3199 | */ | |
3200 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
3201 | { | |
3202 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3203 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3204 | } | |
3205 | ||
3206 | /* | |
3207 | * Delete AUTO export RT from BGP VRF - L3VNI | |
3208 | */ | |
3209 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
3210 | { | |
3211 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
3212 | } | |
128ea8ab | 3213 | |
f1f8b53c MK |
3214 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
3215 | { | |
3216 | struct bgp *bgp_def = NULL; | |
3217 | struct listnode *node = NULL; | |
3218 | struct bgpevpn *vpn = NULL; | |
3219 | ||
3220 | bgp_def = bgp_get_default(); | |
3221 | if (!bgp_def) | |
3222 | return; | |
3223 | ||
4992b4ae MK |
3224 | /* update all type-5 routes */ |
3225 | update_advertise_vrf_routes(bgp_vrf); | |
3226 | ||
3227 | /* update all type-2 routes */ | |
f1f8b53c MK |
3228 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
3229 | update_routes_for_vni(bgp_def, vpn); | |
3230 | } | |
3231 | ||
128ea8ab | 3232 | /* |
3233 | * Public functions. | |
3234 | */ | |
3235 | ||
5424b7ba | 3236 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 3237 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
3238 | afi_t afi, safi_t safi) |
3239 | { | |
3240 | int ret = 0; | |
3241 | struct prefix_evpn evp; | |
3242 | char buf[PREFIX_STRLEN]; | |
3243 | ||
31310b25 | 3244 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
3245 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
3246 | if (ret) { | |
3247 | zlog_err( | |
996c9314 LB |
3248 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
3249 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
3250 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
3251 | } |
3252 | } | |
3253 | ||
342dd0c6 | 3254 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 3255 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 3256 | { |
3257 | struct bgp_table *table = NULL; | |
3258 | struct bgp_node *rn = NULL; | |
25f2ca53 | 3259 | struct bgp_info *ri; |
342dd0c6 | 3260 | |
053905d2 | 3261 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 3262 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
3263 | /* Only care about "selected" routes - non-imported. */ | |
3264 | /* TODO: Support for AddPath for EVPN. */ | |
3265 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
3266 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
3267 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 3268 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
3269 | afi, safi); | |
3270 | break; | |
3271 | } | |
3272 | } | |
3273 | } | |
5424b7ba | 3274 | } |
342dd0c6 | 3275 | |
2f69f6d3 | 3276 | /* |
3277 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
3278 | * to this function correspond to those of the source IP prefix (best | |
3279 | * path in the case of the attr. In the case of a local prefix (when we | |
3280 | * are advertising local subnets), the src_attr will be NULL. | |
3281 | */ | |
31310b25 | 3282 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
3283 | struct attr *src_attr, afi_t afi, |
3284 | safi_t safi) | |
5424b7ba MK |
3285 | { |
3286 | int ret = 0; | |
3287 | struct prefix_evpn evp; | |
3288 | char buf[PREFIX_STRLEN]; | |
7b1bf203 | 3289 | |
31310b25 | 3290 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 3291 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
3292 | if (ret) | |
996c9314 LB |
3293 | zlog_err("%u: Failed to create type-5 route for prefix %s", |
3294 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 3295 | } |
3296 | ||
2f69f6d3 | 3297 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
3298 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
3299 | * advertisement is enabled. | |
3300 | */ | |
996c9314 LB |
3301 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
3302 | safi_t safi) | |
342dd0c6 | 3303 | { |
3304 | struct bgp_table *table = NULL; | |
3305 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 3306 | struct bgp_info *ri; |
342dd0c6 | 3307 | |
053905d2 | 3308 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 3309 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 3310 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 3311 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 3312 | * TODO: Support for AddPath for EVPN. |
3313 | */ | |
3314 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
3315 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
3316 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
3317 | |
3318 | /* apply the route-map */ | |
3319 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
3320 | int ret = 0; | |
3321 | ||
996c9314 LB |
3322 | ret = route_map_apply( |
3323 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
3324 | .map, | |
3325 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
3326 | if (ret == RMAP_DENYMATCH) |
3327 | continue; | |
3328 | } | |
996c9314 LB |
3329 | bgp_evpn_advertise_type5_route( |
3330 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 3331 | break; |
3332 | } | |
3333 | } | |
31310b25 | 3334 | } |
342dd0c6 | 3335 | } |
3336 | ||
996c9314 | 3337 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
3338 | { |
3339 | struct listnode *node, *nnode, *node_to_del; | |
3340 | struct ecommunity *ecom, *ecom_auto; | |
3341 | struct ecommunity_val eval; | |
3342 | ||
3343 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); | |
3344 | ||
3345 | ecom_auto = ecommunity_new(); | |
3346 | ecommunity_add_val(ecom_auto, &eval); | |
3347 | node_to_del = NULL; | |
3348 | ||
3349 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
3350 | if (ecommunity_match(ecom, ecom_auto)) { | |
3351 | ecommunity_free(&ecom); | |
3352 | node_to_del = node; | |
3353 | } | |
3354 | } | |
3355 | ||
3356 | if (node_to_del) | |
3357 | list_delete_node(rtl, node_to_del); | |
3358 | ||
3359 | ecommunity_free(&ecom_auto); | |
3360 | } | |
3361 | ||
3362 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 3363 | struct ecommunity *ecomadd) |
c581d8b0 | 3364 | { |
5ba238b7 MK |
3365 | /* uninstall routes from vrf */ |
3366 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3367 | |
3368 | /* Cleanup the RT to VRF mapping */ | |
3369 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3370 | ||
c581d8b0 MK |
3371 | /* Remove auto generated RT */ |
3372 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
3373 | ||
3374 | /* Add the newly configured RT to RT list */ | |
3375 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
3376 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3377 | ||
10ebe1ab MK |
3378 | /* map VRF to its RTs */ |
3379 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3380 | ||
5ba238b7 MK |
3381 | /* install routes matching the new VRF */ |
3382 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3383 | } |
3384 | ||
3385 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
3386 | struct ecommunity *ecomdel) | |
3387 | { | |
3388 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3389 | struct ecommunity *ecom = NULL; | |
3390 | ||
5ba238b7 MK |
3391 | /* uninstall routes from vrf */ |
3392 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
3393 | |
3394 | /* Cleanup the RT to VRF mapping */ | |
3395 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
3396 | ||
c581d8b0 MK |
3397 | /* remove the RT from the RT list */ |
3398 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3399 | if (ecommunity_match(ecom, ecomdel)) { | |
3400 | ecommunity_free(&ecom); | |
3401 | node_to_del = node; | |
3402 | break; | |
3403 | } | |
3404 | } | |
3405 | ||
3406 | if (node_to_del) | |
3407 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
3408 | ||
3409 | /* fallback to auto import rt, if this was the last RT */ | |
3410 | if (list_isempty(bgp_vrf->vrf_import_rtl)) { | |
3411 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
3412 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
3413 | } | |
3414 | ||
10ebe1ab MK |
3415 | /* map VRFs to its RTs */ |
3416 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
3417 | ||
5ba238b7 MK |
3418 | /* install routes matching this new RT */ |
3419 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
3420 | } |
3421 | ||
3422 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3423 | struct ecommunity *ecomadd) | |
3424 | { | |
3425 | /* remove auto-generated RT */ | |
3426 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
3427 | ||
3428 | /* Add the new RT to the RT list */ | |
3429 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
3430 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
3431 | ||
f1f8b53c | 3432 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
3433 | } |
3434 | ||
3435 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
3436 | struct ecommunity *ecomdel) | |
3437 | { | |
3438 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
3439 | struct ecommunity *ecom = NULL; | |
3440 | ||
3441 | /* Remove the RT from the RT list */ | |
3442 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
3443 | if (ecommunity_match(ecom, ecomdel)) { | |
3444 | ecommunity_free(&ecom); | |
3445 | node_to_del = node; | |
3446 | break; | |
3447 | } | |
3448 | } | |
3449 | ||
3450 | if (node_to_del) | |
3451 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
3452 | ||
3453 | /* fall back to auto-generated RT if this was the last RT */ | |
877702e7 | 3454 | if (bgp_vrf->vrf_export_rtl && list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
3455 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
3456 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
3457 | } | |
3458 | ||
f1f8b53c | 3459 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
3460 | } |
3461 | ||
2d48ee25 | 3462 | /* |
3463 | * Handle change to BGP router id. This is invoked twice by the change | |
3464 | * handler, first before the router id has been changed and then after | |
3465 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 3466 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 3467 | * will result in the routes being re-advertised. |
3468 | */ | |
d62a17ae | 3469 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 3470 | { |
676f83b9 | 3471 | if (withdraw) { |
3472 | ||
3473 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 3474 | stored in the global table for this vrf |
3475 | */ | |
80b140af | 3476 | withdraw_router_id_vrf(bgp); |
676f83b9 | 3477 | |
3478 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 3479 | * L2-VNIs |
3480 | */ | |
d62a17ae | 3481 | hash_iterate(bgp->vnihash, |
3482 | (void (*)(struct hash_backet *, | |
3483 | void *))withdraw_router_id_vni, | |
3484 | bgp); | |
676f83b9 | 3485 | } else { |
3486 | ||
3487 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 3488 | * RD |
3489 | */ | |
80b140af | 3490 | update_router_id_vrf(bgp); |
676f83b9 | 3491 | |
3492 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 3493 | * new RD |
3494 | */ | |
d62a17ae | 3495 | hash_iterate(bgp->vnihash, |
3496 | (void (*)(struct hash_backet *, | |
3497 | void *))update_router_id_vni, | |
3498 | bgp); | |
676f83b9 | 3499 | } |
2d48ee25 | 3500 | } |
3501 | ||
90e60aa7 | 3502 | /* |
3503 | * Handle change to export RT - update and advertise local routes. | |
3504 | */ | |
d62a17ae | 3505 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3506 | { |
d62a17ae | 3507 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 3508 | } |
3509 | ||
996c9314 | 3510 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 3511 | { |
3512 | if (withdraw) | |
3513 | delete_withdraw_vrf_routes(bgp_vrf); | |
3514 | else | |
3515 | update_advertise_vrf_routes(bgp_vrf); | |
3516 | } | |
3517 | ||
90e60aa7 | 3518 | /* |
3519 | * Handle change to RD. This is invoked twice by the change handler, | |
3520 | * first before the RD has been changed and then after the RD has | |
3521 | * been changed. The first invocation will result in local routes | |
3522 | * of this VNI being deleted and withdrawn and the next will result | |
3523 | * in the routes being re-advertised. | |
3524 | */ | |
d62a17ae | 3525 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
3526 | int withdraw) | |
90e60aa7 | 3527 | { |
d62a17ae | 3528 | if (withdraw) |
3529 | delete_withdraw_vni_routes(bgp, vpn); | |
3530 | else | |
3531 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 3532 | } |
3533 | ||
3534 | /* | |
3535 | * Install routes for this VNI. Invoked upon change to Import RT. | |
3536 | */ | |
d62a17ae | 3537 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3538 | { |
d62a17ae | 3539 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 3540 | } |
3541 | ||
3542 | /* | |
3543 | * Uninstall all routes installed for this VNI. Invoked upon change | |
3544 | * to Import RT. | |
3545 | */ | |
d62a17ae | 3546 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3547 | { |
d62a17ae | 3548 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 3549 | } |
3550 | ||
b16031a2 | 3551 | /* |
b57ba6d2 | 3552 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 3553 | */ |
d7c0a89a | 3554 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 3555 | int len) |
b16031a2 | 3556 | { |
b57ba6d2 | 3557 | vni_t vni1, vni2; |
b16031a2 | 3558 | |
b57ba6d2 MK |
3559 | vni1 = label2vni(label); |
3560 | if (num_labels == 2) { | |
996c9314 | 3561 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
3562 | snprintf(buf, len, "%u/%u", vni1, vni2); |
3563 | } else | |
3564 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 3565 | return buf; |
b16031a2 | 3566 | } |
3567 | ||
9c92b5f7 MK |
3568 | /* |
3569 | * Function to convert evpn route to json format. | |
3570 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3571 | */ | |
57f7feb6 | 3572 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 3573 | { |
b682f6de | 3574 | char buf1[ETHER_ADDR_STRLEN]; |
3575 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 3576 | |
b682f6de | 3577 | if (!json) |
3578 | return; | |
9c92b5f7 | 3579 | |
dff8f48d | 3580 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 3581 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 3582 | json_object_int_add(json, "ethTag", |
3583 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 3584 | json_object_int_add(json, "ipLen", |
3714a385 | 3585 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
3586 | ? IPV4_MAX_BITLEN |
3587 | : IPV6_MAX_BITLEN); | |
b682f6de | 3588 | json_object_string_add(json, "ip", |
3714a385 | 3589 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 3590 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 3591 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
3592 | json_object_int_add(json, "routeType", |
3593 | p->prefix.route_type); | |
3714a385 | 3594 | json_object_int_add(json, "ethTag", |
3595 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
3596 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
3597 | json_object_string_add(json, "mac", | |
3714a385 | 3598 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
3599 | buf1, |
3600 | sizeof(buf1))); | |
dff8f48d | 3601 | } else { |
d7c0a89a | 3602 | uint8_t family; |
dff8f48d | 3603 | |
3714a385 | 3604 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 3605 | : AF_INET6; |
dff8f48d | 3606 | |
b682f6de | 3607 | json_object_int_add(json, "routeType", |
57f7feb6 | 3608 | p->prefix.route_type); |
3714a385 | 3609 | json_object_int_add(json, "ethTag", |
3610 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 3611 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 3612 | json_object_string_add(json, "mac", |
3714a385 | 3613 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
3614 | buf1, |
3615 | sizeof(buf1))); | |
b682f6de | 3616 | json_object_int_add(json, "ipLen", |
3714a385 | 3617 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
3618 | ? IPV4_MAX_BITLEN |
3619 | : IPV6_MAX_BITLEN); | |
3620 | json_object_string_add( | |
3621 | json, "ip", | |
3714a385 | 3622 | inet_ntop(family, |
3623 | &p->prefix.macip_addr.ip.ip.addr, | |
3624 | buf2, | |
57f7feb6 | 3625 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
3626 | } |
3627 | } else { | |
3628 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
3629 | } | |
9c92b5f7 MK |
3630 | } |
3631 | ||
520d5d76 | 3632 | /* |
3633 | * Function to convert evpn route to string. | |
3634 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
3635 | */ | |
d62a17ae | 3636 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
3637 | { | |
3638 | char buf1[ETHER_ADDR_STRLEN]; | |
3639 | char buf2[PREFIX2STR_BUFFER]; | |
3640 | ||
3641 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 3642 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 3643 | p->prefix.imet_addr.eth_tag, |
3644 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 3645 | : IPV6_MAX_BITLEN, |
3714a385 | 3646 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 3647 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 3648 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
3649 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
3650 | p->prefix.route_type, | |
3714a385 | 3651 | p->prefix.macip_addr.eth_tag, |
554cd77a | 3652 | 8 * ETH_ALEN, |
3714a385 | 3653 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 3654 | sizeof(buf1))); |
3655 | else { | |
d7c0a89a | 3656 | uint8_t family; |
d62a17ae | 3657 | |
3714a385 | 3658 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 3659 | : AF_INET6; |
554cd77a VB |
3660 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
3661 | p->prefix.route_type, | |
3714a385 | 3662 | p->prefix.macip_addr.eth_tag, |
554cd77a | 3663 | 8 * ETH_ALEN, |
3714a385 | 3664 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 3665 | sizeof(buf1)), |
3666 | family == AF_INET ? IPV4_MAX_BITLEN | |
3667 | : IPV6_MAX_BITLEN, | |
3714a385 | 3668 | inet_ntop(family, |
3669 | &p->prefix.macip_addr.ip.ip.addr, | |
3670 | buf2, | |
d62a17ae | 3671 | PREFIX2STR_BUFFER)); |
3672 | } | |
342dd0c6 | 3673 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
3674 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
3675 | p->prefix.route_type, | |
3714a385 | 3676 | p->prefix.prefix_addr.eth_tag, |
3677 | p->prefix.prefix_addr.ip_prefix_length, | |
3678 | is_evpn_prefix_ipaddr_v4(p) | |
3679 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
3680 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
d62a17ae | 3681 | } else { |
b03b8898 | 3682 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
3683 | snprintf(buf, len, "(unsupported route type %d)", |
3684 | p->prefix.route_type); | |
d62a17ae | 3685 | } |
3686 | ||
3687 | return (buf); | |
520d5d76 | 3688 | } |
3689 | ||
128ea8ab | 3690 | /* |
3691 | * Encode EVPN prefix in Update (MP_REACH) | |
3692 | */ | |
d62a17ae | 3693 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 3694 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
3695 | uint32_t num_labels, struct attr *attr, |
3696 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 3697 | { |
3698 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 3699 | int len, ipa_len = 0; |
d62a17ae | 3700 | |
3701 | if (addpath_encode) | |
3702 | stream_putl(s, addpath_tx_id); | |
3703 | ||
3704 | /* Route type */ | |
3705 | stream_putc(s, evp->prefix.route_type); | |
3706 | ||
3707 | switch (evp->prefix.route_type) { | |
3708 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 3709 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 3710 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 3711 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 3712 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
3713 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
3714 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
3715 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
3716 | len += 3; | |
3717 | stream_putc(s, len); | |
996c9314 | 3718 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
3719 | if (attr) |
3720 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
3721 | else | |
3722 | stream_put(s, 0, 10); | |
3714a385 | 3723 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 3724 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 3725 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
3726 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
3727 | if (ipa_len) /* IP */ | |
3728 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
3729 | ipa_len); | |
b57ba6d2 MK |
3730 | /* 1st label is the L2 VNI */ |
3731 | stream_put(s, label, BGP_LABEL_BYTES); | |
3732 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
3733 | if (ipa_len && num_labels > 1) | |
996c9314 | 3734 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 3735 | break; |
3736 | ||
3737 | case BGP_EVPN_IMET_ROUTE: | |
3738 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
3739 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 3740 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 3741 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
3742 | /* Originating Router's IP Addr */ | |
3714a385 | 3743 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 3744 | break; |
3745 | ||
3746 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3747 | /* TODO: AddPath support. */ | |
b57ba6d2 | 3748 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 3749 | break; |
3750 | ||
3751 | default: | |
3752 | break; | |
3753 | } | |
3754 | } | |
3755 | ||
3756 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
3757 | struct bgp_nlri *packet, int withdraw) | |
3758 | { | |
d7c0a89a QY |
3759 | uint8_t *pnt; |
3760 | uint8_t *lim; | |
d62a17ae | 3761 | afi_t afi; |
3762 | safi_t safi; | |
d7c0a89a | 3763 | uint32_t addpath_id; |
d62a17ae | 3764 | int addpath_encoded; |
3765 | int psize = 0; | |
d7c0a89a QY |
3766 | uint8_t rtype; |
3767 | uint8_t rlen; | |
d62a17ae | 3768 | struct prefix p; |
3769 | ||
d62a17ae | 3770 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
3771 | pnt = packet->nlri; | |
3772 | lim = pnt + packet->length; | |
3773 | afi = packet->afi; | |
3774 | safi = packet->safi; | |
3775 | addpath_id = 0; | |
3776 | ||
3777 | addpath_encoded = | |
3778 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
3779 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
3780 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
3781 | ||
3782 | for (; pnt < lim; pnt += psize) { | |
3783 | /* Clear prefix structure. */ | |
3784 | memset(&p, 0, sizeof(struct prefix)); | |
3785 | ||
3786 | /* Deal with path-id if AddPath is supported. */ | |
3787 | if (addpath_encoded) { | |
3788 | /* When packet overflow occurs return immediately. */ | |
3789 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
3790 | return -1; | |
3791 | ||
3792 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
3793 | pnt += BGP_ADDPATH_ID_LEN; | |
3794 | } | |
3795 | ||
3796 | /* All EVPN NLRI types start with type and length. */ | |
3797 | if (pnt + 2 > lim) | |
3798 | return -1; | |
3799 | ||
3800 | rtype = *pnt++; | |
3801 | psize = rlen = *pnt++; | |
3802 | ||
3803 | /* When packet overflow occur return immediately. */ | |
3804 | if (pnt + psize > lim) | |
3805 | return -1; | |
3806 | ||
3807 | switch (rtype) { | |
3808 | case BGP_EVPN_MAC_IP_ROUTE: | |
3809 | if (process_type2_route(peer, afi, safi, | |
3810 | withdraw ? NULL : attr, pnt, | |
3811 | psize, addpath_id)) { | |
3812 | zlog_err( | |
3813 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
3814 | peer->bgp->vrf_id, peer->host, psize); | |
3815 | return -1; | |
3816 | } | |
3817 | break; | |
3818 | ||
3819 | case BGP_EVPN_IMET_ROUTE: | |
3820 | if (process_type3_route(peer, afi, safi, | |
3821 | withdraw ? NULL : attr, pnt, | |
3822 | psize, addpath_id)) { | |
3823 | zlog_err( | |
3824 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
3825 | peer->bgp->vrf_id, peer->host, psize); | |
3826 | return -1; | |
3827 | } | |
3828 | break; | |
3829 | ||
3830 | case BGP_EVPN_IP_PREFIX_ROUTE: | |
3831 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
3832 | psize, addpath_id, withdraw)) { | |
3833 | zlog_err( | |
3834 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
3835 | peer->bgp->vrf_id, peer->host, psize); | |
3836 | return -1; | |
3837 | } | |
3838 | break; | |
3839 | ||
3840 | default: | |
3841 | break; | |
3842 | } | |
3843 | } | |
3844 | ||
3845 | /* Packet length consistency check. */ | |
3846 | if (pnt != lim) | |
3847 | return -1; | |
3848 | ||
3849 | return 0; | |
128ea8ab | 3850 | } |
3851 | ||
10ebe1ab MK |
3852 | /* |
3853 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
3854 | * The mapping will be used during route processing. | |
3855 | * bgp_def: default bgp instance | |
3856 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
3857 | */ | |
3858 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
3859 | { | |
3860 | int i = 0; | |
3861 | struct ecommunity_val *eval = NULL; | |
3862 | struct listnode *node = NULL, *nnode = NULL; | |
3863 | struct ecommunity *ecom = NULL; | |
3864 | ||
3865 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3866 | for (i = 0; i < ecom->size; i++) { | |
3867 | eval = (struct ecommunity_val *)(ecom->val | |
3868 | + (i | |
3869 | * ECOMMUNITY_SIZE)); | |
3870 | map_vrf_to_rt(bgp_vrf, eval); | |
3871 | } | |
3872 | } | |
3873 | } | |
3874 | ||
3875 | /* | |
3876 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
3877 | */ | |
3878 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
3879 | { | |
3880 | int i; | |
3881 | struct ecommunity_val *eval; | |
3882 | struct listnode *node, *nnode; | |
3883 | struct ecommunity *ecom; | |
3884 | ||
3885 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
3886 | for (i = 0; i < ecom->size; i++) { | |
3887 | struct vrf_irt_node *irt; | |
3888 | struct ecommunity_val eval_tmp; | |
3889 | ||
3890 | eval = (struct ecommunity_val *)(ecom->val | |
3891 | + (i | |
3892 | * ECOMMUNITY_SIZE)); | |
3893 | /* If using "automatic" RT, we only care about the | |
3894 | * local-admin sub-field. | |
3895 | * This is to facilitate using VNI as the RT for EBGP | |
3896 | * peering too. | |
3897 | */ | |
3898 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3899 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
3900 | BGP_VRF_IMPORT_RT_CFGD)) | |
3901 | mask_ecom_global_admin(&eval_tmp, eval); | |
3902 | ||
3903 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3904 | if (irt) | |
3905 | unmap_vrf_from_rt(bgp_vrf, irt); | |
3906 | } | |
3907 | } | |
3908 | } | |
3909 | ||
3910 | ||
128ea8ab | 3911 | /* |
3912 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
3913 | * The mapping will be used during route processing. | |
3914 | */ | |
d62a17ae | 3915 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3916 | { |
d62a17ae | 3917 | int i; |
3918 | struct ecommunity_val *eval; | |
3919 | struct listnode *node, *nnode; | |
3920 | struct ecommunity *ecom; | |
128ea8ab | 3921 | |
d62a17ae | 3922 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3923 | for (i = 0; i < ecom->size; i++) { | |
3924 | eval = (struct ecommunity_val *)(ecom->val | |
3925 | + (i | |
3926 | * ECOMMUNITY_SIZE)); | |
3927 | map_vni_to_rt(bgp, vpn, eval); | |
3928 | } | |
3929 | } | |
128ea8ab | 3930 | } |
3931 | ||
3932 | /* | |
3933 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
3934 | */ | |
d62a17ae | 3935 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3936 | { |
d62a17ae | 3937 | int i; |
3938 | struct ecommunity_val *eval; | |
3939 | struct listnode *node, *nnode; | |
3940 | struct ecommunity *ecom; | |
128ea8ab | 3941 | |
d62a17ae | 3942 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
3943 | for (i = 0; i < ecom->size; i++) { | |
3944 | struct irt_node *irt; | |
3945 | struct ecommunity_val eval_tmp; | |
128ea8ab | 3946 | |
d62a17ae | 3947 | eval = (struct ecommunity_val *)(ecom->val |
3948 | + (i | |
3949 | * ECOMMUNITY_SIZE)); | |
3950 | /* If using "automatic" RT, we only care about the | |
3951 | * local-admin sub-field. | |
3952 | * This is to facilitate using VNI as the RT for EBGP | |
3953 | * peering too. | |
3954 | */ | |
3955 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3956 | if (!is_import_rt_configured(vpn)) | |
3957 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 3958 | |
d62a17ae | 3959 | irt = lookup_import_rt(bgp, &eval_tmp); |
3960 | if (irt) | |
3961 | unmap_vni_from_rt(bgp, vpn, irt); | |
3962 | } | |
3963 | } | |
128ea8ab | 3964 | } |
3965 | ||
3966 | /* | |
3967 | * Derive Import RT automatically for VNI and map VNI to RT. | |
3968 | * The mapping will be used during route processing. | |
3969 | */ | |
d62a17ae | 3970 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3971 | { |
c581d8b0 | 3972 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 3973 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 3974 | |
d62a17ae | 3975 | /* Map RT to VNI */ |
3976 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 3977 | } |
3978 | ||
3979 | /* | |
3980 | * Derive Export RT automatically for VNI. | |
3981 | */ | |
d62a17ae | 3982 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3983 | { |
c581d8b0 | 3984 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 3985 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 3986 | } |
3987 | ||
676f83b9 | 3988 | /* |
3989 | * Derive RD automatically for VNI using passed information - it | |
3990 | * is of the form RouterId:unique-id-for-vni. | |
3991 | */ | |
3992 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
3993 | { | |
92708db6 | 3994 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 3995 | } |
3996 | ||
128ea8ab | 3997 | /* |
3998 | * Derive RD automatically for VNI using passed information - it | |
3999 | * is of the form RouterId:unique-id-for-vni. | |
4000 | */ | |
d62a17ae | 4001 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4002 | { |
d62a17ae | 4003 | char buf[100]; |
128ea8ab | 4004 | |
d62a17ae | 4005 | vpn->prd.family = AF_UNSPEC; |
4006 | vpn->prd.prefixlen = 64; | |
4007 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4008 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4009 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4010 | } |
4011 | ||
4012 | /* | |
4013 | * Lookup VNI. | |
4014 | */ | |
d62a17ae | 4015 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4016 | { |
d62a17ae | 4017 | struct bgpevpn *vpn; |
4018 | struct bgpevpn tmp; | |
128ea8ab | 4019 | |
d62a17ae | 4020 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4021 | tmp.vni = vni; | |
4022 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4023 | return vpn; | |
128ea8ab | 4024 | } |
4025 | ||
4026 | /* | |
4027 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4028 | */ | |
d62a17ae | 4029 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4030 | struct in_addr originator_ip, |
4031 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4032 | { |
d62a17ae | 4033 | struct bgpevpn *vpn; |
128ea8ab | 4034 | |
d62a17ae | 4035 | if (!bgp) |
4036 | return NULL; | |
128ea8ab | 4037 | |
d62a17ae | 4038 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4039 | if (!vpn) | |
4040 | return NULL; | |
128ea8ab | 4041 | |
d62a17ae | 4042 | /* Set values - RD and RT set to defaults. */ |
4043 | vpn->vni = vni; | |
4044 | vpn->originator_ip = originator_ip; | |
29c53922 | 4045 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4046 | |
d62a17ae | 4047 | /* Initialize route-target import and export lists */ |
4048 | vpn->import_rtl = list_new(); | |
4049 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
4050 | vpn->export_rtl = list_new(); | |
4051 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
e9eb5f63 | 4052 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4053 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4054 | |
d62a17ae | 4055 | /* Initialize EVPN route table. */ |
960035b2 | 4056 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4057 | |
d62a17ae | 4058 | /* Add to hash */ |
4059 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4060 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4061 | return NULL; | |
4062 | } | |
6a8657d0 MK |
4063 | |
4064 | /* add to l2vni list on corresponding vrf */ | |
4065 | bgpevpn_link_to_l3vni(vpn); | |
4066 | ||
d62a17ae | 4067 | QOBJ_REG(vpn, bgpevpn); |
4068 | return vpn; | |
128ea8ab | 4069 | } |
4070 | ||
4071 | /* | |
4072 | * Free a given VPN - called in multiple scenarios such as zebra | |
4073 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4074 | * This just frees appropriate memory, caller should have taken other | |
4075 | * needed actions. | |
4076 | */ | |
d62a17ae | 4077 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4078 | { |
6a8657d0 | 4079 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4080 | bgp_table_unlock(vpn->route_table); |
4081 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4082 | list_delete_and_null(&vpn->import_rtl); |
4083 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4084 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4085 | hash_release(bgp->vnihash, vpn); |
4086 | QOBJ_UNREG(vpn); | |
4087 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 4088 | } |
4089 | ||
4090 | /* | |
4091 | * Import route into matching VNI(s). | |
4092 | */ | |
d62a17ae | 4093 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4094 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 4095 | { |
d62a17ae | 4096 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 4097 | } |
4098 | ||
4099 | /* | |
4100 | * Unimport route from matching VNI(s). | |
4101 | */ | |
d62a17ae | 4102 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4103 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 4104 | { |
d62a17ae | 4105 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 4106 | } |
4107 | ||
db0e1937 MK |
4108 | /* filter routes which have martian next hops */ |
4109 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
4110 | { | |
0291c246 MK |
4111 | afi_t afi; |
4112 | safi_t safi; | |
4113 | struct bgp_node *rd_rn, *rn; | |
4114 | struct bgp_table *table; | |
4115 | struct bgp_info *ri; | |
db0e1937 MK |
4116 | |
4117 | afi = AFI_L2VPN; | |
4118 | safi = SAFI_EVPN; | |
4119 | ||
4120 | /* Walk entire global routing table and evaluate routes which could be | |
4121 | * imported into this VPN. Note that we cannot just look at the routes | |
4122 | * for the VNI's RD - | |
4123 | * remote routes applicable for this VNI could have any RD. | |
4124 | */ | |
4125 | /* EVPN routes are a 2-level table. */ | |
4126 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
4127 | rd_rn = bgp_route_next(rd_rn)) { | |
4128 | table = (struct bgp_table *)(rd_rn->info); | |
4129 | if (!table) | |
4130 | continue; | |
4131 | ||
4132 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
4133 | ||
4134 | for (ri = rn->info; ri; ri = ri->next) { | |
4135 | ||
4136 | /* Consider "valid" remote routes applicable for | |
4137 | * this VNI. */ | |
4138 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
4139 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
4140 | continue; | |
4141 | ||
60466a63 | 4142 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
4143 | |
4144 | char attr_str[BUFSIZ]; | |
4145 | char pbuf[PREFIX_STRLEN]; | |
4146 | ||
4147 | bgp_dump_attr(ri->attr, attr_str, | |
4148 | BUFSIZ); | |
4149 | ||
4150 | if (bgp_debug_update(ri->peer, &rn->p, | |
4151 | NULL, 1)) | |
4152 | zlog_debug( | |
b682f6de | 4153 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
4154 | bgp->vrf_id, |
4155 | prefix2str( | |
60466a63 | 4156 | &rn->p, pbuf, |
db0e1937 MK |
4157 | sizeof(pbuf)), |
4158 | attr_str); | |
4159 | ||
4160 | bgp_evpn_unimport_route(bgp, afi, safi, | |
4161 | &rn->p, ri); | |
4162 | ||
60466a63 QY |
4163 | bgp_rib_remove(rn, ri, ri->peer, afi, |
4164 | safi); | |
db0e1937 | 4165 | } |
db0e1937 MK |
4166 | } |
4167 | } | |
4168 | } | |
4169 | ||
4170 | return 0; | |
4171 | } | |
4172 | ||
128ea8ab | 4173 | /* |
4174 | * Handle del of a local MACIP. | |
4175 | */ | |
d62a17ae | 4176 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
4177 | struct ipaddr *ip) | |
128ea8ab | 4178 | { |
d62a17ae | 4179 | struct bgpevpn *vpn; |
4180 | struct prefix_evpn p; | |
128ea8ab | 4181 | |
d62a17ae | 4182 | if (!bgp->vnihash) { |
4183 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4184 | return -1; | |
4185 | } | |
128ea8ab | 4186 | |
d62a17ae | 4187 | /* Lookup VNI hash - should exist. */ |
4188 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4189 | if (!vpn || !is_vni_live(vpn)) { | |
4190 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
4191 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
4192 | return -1; | |
4193 | } | |
128ea8ab | 4194 | |
d62a17ae | 4195 | /* Remove EVPN type-2 route and schedule for processing. */ |
4196 | build_evpn_type2_prefix(&p, mac, ip); | |
4197 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 4198 | |
d62a17ae | 4199 | return 0; |
128ea8ab | 4200 | } |
4201 | ||
4202 | /* | |
4203 | * Handle add of a local MACIP. | |
4204 | */ | |
d62a17ae | 4205 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
d7c0a89a | 4206 | struct ipaddr *ip, uint8_t flags) |
128ea8ab | 4207 | { |
d62a17ae | 4208 | struct bgpevpn *vpn; |
4209 | struct prefix_evpn p; | |
128ea8ab | 4210 | |
d62a17ae | 4211 | if (!bgp->vnihash) { |
4212 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4213 | return -1; | |
4214 | } | |
128ea8ab | 4215 | |
d62a17ae | 4216 | /* Lookup VNI hash - should exist. */ |
4217 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4218 | if (!vpn || !is_vni_live(vpn)) { | |
4219 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
4220 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
4221 | return -1; | |
4222 | } | |
128ea8ab | 4223 | |
d62a17ae | 4224 | /* Create EVPN type-2 route and schedule for processing. */ |
4225 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 4226 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 4227 | char buf[ETHER_ADDR_STRLEN]; |
4228 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 4229 | |
d62a17ae | 4230 | zlog_err( |
ead40654 | 4231 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 4232 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
4233 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
4234 | ? "sticky gateway" | |
4235 | : "", | |
d62a17ae | 4236 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 4237 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 4238 | return -1; |
4239 | } | |
128ea8ab | 4240 | |
d62a17ae | 4241 | return 0; |
128ea8ab | 4242 | } |
4243 | ||
6a8657d0 MK |
4244 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
4245 | struct bgp *bgp_vrf) | |
4246 | { | |
4247 | struct bgpevpn *vpn = NULL; | |
4248 | struct bgp *bgp_def = NULL; | |
4249 | ||
4250 | bgp_def = bgp_get_default(); | |
4251 | assert(bgp_def); | |
4252 | ||
4253 | vpn = (struct bgpevpn *)backet->data; | |
4254 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
4255 | bgpevpn_link_to_l3vni(vpn); | |
4256 | } | |
4257 | ||
996c9314 LB |
4258 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
4259 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
4260 | { |
4261 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
4262 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
4263 | struct listnode *node = NULL; |
4264 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
4265 | as_t as = 0; |
4266 | ||
4267 | /* get the default instamce - required to get the AS number for VRF | |
523cafc4 | 4268 | * auto-creatio |
4269 | */ | |
fe1dc5a3 MK |
4270 | bgp_def = bgp_get_default(); |
4271 | if (!bgp_def) { | |
996c9314 LB |
4272 | zlog_err( |
4273 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
4274 | l3vni); | |
fe1dc5a3 MK |
4275 | return -1; |
4276 | } | |
4277 | as = bgp_def->as; | |
4278 | ||
4279 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 4280 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
4281 | if (!bgp_vrf) { |
4282 | ||
4283 | int ret = 0; | |
4284 | ||
4285 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
4286 | BGP_INSTANCE_TYPE_VRF); | |
4287 | switch (ret) { | |
4288 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
4289 | zlog_err("'bgp multiple-instance' not present\n"); | |
4290 | return -1; | |
4291 | case BGP_ERR_AS_MISMATCH: | |
4292 | zlog_err("BGP is already running; AS is %u\n", as); | |
4293 | return -1; | |
4294 | case BGP_ERR_INSTANCE_MISMATCH: | |
4295 | zlog_err("BGP instance name and AS number mismatch\n"); | |
4296 | return -1; | |
4297 | } | |
4298 | ||
4299 | /* mark as auto created */ | |
4300 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
4301 | } | |
4302 | ||
4303 | /* associate with l3vni */ | |
4304 | bgp_vrf->l3vni = l3vni; | |
4305 | ||
4306 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
4307 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
4308 | ||
b67a60d2 | 4309 | /* set the originator ip */ |
4310 | bgp_vrf->originator_ip = originator_ip; | |
4311 | ||
c48d9f5f MK |
4312 | /* set the right filter - are we using l3vni only for prefix routes? */ |
4313 | if (filter) | |
4314 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
4315 | ||
c581d8b0 MK |
4316 | /* auto derive RD/RT */ |
4317 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4318 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4319 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
4320 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 4321 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 4322 | |
6a8657d0 MK |
4323 | /* link all corresponding l2vnis */ |
4324 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
4325 | (void (*)(struct hash_backet *, |
4326 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
4327 | bgp_vrf); |
4328 | ||
c48d9f5f MK |
4329 | /* Only update all corresponding type-2 routes if we are advertising two |
4330 | * labels along with type-2 routes | |
4331 | */ | |
4332 | if (!filter) | |
4333 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
4334 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 4335 | |
06d2e8f3 MK |
4336 | /* advertise type-5 routes if needed */ |
4337 | update_advertise_vrf_routes(bgp_vrf); | |
4338 | ||
5ba238b7 MK |
4339 | /* install all remote routes belonging to this l3vni into correspondng |
4340 | * vrf */ | |
4341 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
4342 | |
4343 | return 0; | |
4344 | } | |
4345 | ||
996c9314 | 4346 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
4347 | { |
4348 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
4349 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
4350 | struct listnode *node = NULL; | |
18abc1eb | 4351 | struct listnode *next = NULL; |
f1f8b53c | 4352 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
4353 | |
4354 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
4355 | if (!bgp_vrf) { | |
996c9314 LB |
4356 | zlog_err( |
4357 | "Cannot process L3VNI %u Del - Could not find BGP instance", | |
4358 | l3vni); | |
fe1dc5a3 MK |
4359 | return -1; |
4360 | } | |
4361 | ||
f1f8b53c MK |
4362 | bgp_def = bgp_get_default(); |
4363 | if (!bgp_def) { | |
996c9314 LB |
4364 | zlog_err( |
4365 | "Cannot process L3VNI %u Del - Could not find default BGP instance", | |
4366 | l3vni); | |
f1f8b53c MK |
4367 | return -1; |
4368 | } | |
4369 | ||
1eb88002 | 4370 | /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will |
523cafc4 | 4371 | * take care of uninstalling the routes from zebra |
4372 | */ | |
1eb88002 MK |
4373 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) |
4374 | uninstall_routes_for_vrf(bgp_vrf); | |
5ba238b7 | 4375 | |
06d2e8f3 MK |
4376 | /* delete/withdraw all type-5 routes */ |
4377 | delete_withdraw_vrf_routes(bgp_vrf); | |
4378 | ||
fe1dc5a3 MK |
4379 | /* remove the l3vni from vrf instance */ |
4380 | bgp_vrf->l3vni = 0; | |
4381 | ||
4382 | /* remove the Rmac from the BGP vrf */ | |
4383 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
4384 | ||
c581d8b0 | 4385 | /* delete RD/RT */ |
23a06e11 | 4386 | if (bgp_vrf->vrf_import_rtl && !list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 4387 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 4388 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 MK |
4389 | } |
4390 | if (bgp_vrf->vrf_export_rtl && !list_isempty(bgp_vrf->vrf_export_rtl)) { | |
5ba238b7 | 4391 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 4392 | } |
fe1dc5a3 | 4393 | |
f1f8b53c | 4394 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
4395 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
4396 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
4397 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
4398 | update_routes_for_vni(bgp_def, vpn); | |
4399 | } | |
4400 | } | |
fe1dc5a3 | 4401 | |
18abc1eb | 4402 | /* If any L2VNIs point to this instance, unlink them. */ |
4403 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
4404 | bgpevpn_unlink_from_l3vni(vpn); | |
4405 | ||
fe1dc5a3 MK |
4406 | /* Delete the instance if it was autocreated */ |
4407 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
4408 | bgp_delete(bgp_vrf); | |
4409 | ||
4410 | return 0; | |
4411 | } | |
4412 | ||
128ea8ab | 4413 | /* |
4414 | * Handle del of a local VNI. | |
4415 | */ | |
d62a17ae | 4416 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 4417 | { |
d62a17ae | 4418 | struct bgpevpn *vpn; |
128ea8ab | 4419 | |
d62a17ae | 4420 | if (!bgp->vnihash) { |
4421 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4422 | return -1; | |
4423 | } | |
128ea8ab | 4424 | |
d62a17ae | 4425 | /* Locate VNI hash */ |
4426 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4427 | if (!vpn) { | |
4428 | zlog_warn("%u: VNI hash entry for VNI %u not found at DEL", | |
4429 | bgp->vrf_id, vni); | |
4430 | return 0; | |
4431 | } | |
128ea8ab | 4432 | |
d62a17ae | 4433 | /* Remove all local EVPN routes and schedule for processing (to |
4434 | * withdraw from peers). | |
4435 | */ | |
4436 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4437 | |
db0e1937 MK |
4438 | /* |
4439 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
4440 | */ | |
4441 | bgp_tip_del(bgp, &vpn->originator_ip); | |
4442 | ||
d62a17ae | 4443 | /* Clear "live" flag and see if hash needs to be freed. */ |
4444 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4445 | if (!is_vni_configured(vpn)) | |
4446 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4447 | |
d62a17ae | 4448 | return 0; |
128ea8ab | 4449 | } |
4450 | ||
4451 | /* | |
d1911c26 | 4452 | * Handle add (or update) of a local VNI. The VNI changes we care |
4453 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 4454 | */ |
d62a17ae | 4455 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 4456 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 4457 | { |
4458 | struct bgpevpn *vpn; | |
4459 | struct prefix_evpn p; | |
4460 | ||
4461 | if (!bgp->vnihash) { | |
4462 | zlog_err("%u: VNI hash not created", bgp->vrf_id); | |
4463 | return -1; | |
4464 | } | |
4465 | ||
4466 | /* Lookup VNI. If present and no change, exit. */ | |
4467 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 4468 | if (vpn) { |
29c53922 | 4469 | |
d1911c26 | 4470 | if (is_vni_live(vpn) |
4471 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
4472 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
4473 | /* Probably some other param has changed that we don't | |
4474 | * care about. */ | |
4475 | return 0; | |
4476 | ||
4477 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
4478 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
4479 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 4480 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
4481 | bgpevpn_link_to_l3vni(vpn); |
4482 | } | |
29c53922 | 4483 | |
d1911c26 | 4484 | /* If tunnel endpoint IP has changed, update (and delete prior |
4485 | * type-3 route, if needed.) | |
4486 | */ | |
4487 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
4488 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 4489 | |
d1911c26 | 4490 | /* Update all routes with new endpoint IP and/or export RT |
4491 | * for VRFs | |
4492 | */ | |
4493 | if (is_vni_live(vpn)) | |
4494 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 4495 | } |
4496 | ||
4497 | /* Create or update as appropriate. */ | |
4498 | if (!vpn) { | |
29c53922 | 4499 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 4500 | if (!vpn) { |
4501 | zlog_err( | |
4502 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
4503 | bgp->vrf_id, vni); | |
4504 | return -1; | |
4505 | } | |
4506 | } | |
4507 | ||
db0e1937 | 4508 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
4509 | if (is_vni_live(vpn)) |
4510 | return 0; | |
4511 | ||
d62a17ae | 4512 | /* Mark as "live" */ |
4513 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4514 | ||
db0e1937 MK |
4515 | /* tunnel is now active, add tunnel-ip to db */ |
4516 | bgp_tip_add(bgp, &originator_ip); | |
4517 | ||
4518 | /* filter routes as nexthop database has changed */ | |
4519 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
4520 | ||
d62a17ae | 4521 | /* Create EVPN type-3 route and schedule for processing. */ |
4522 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4523 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
4524 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
4525 | bgp->vrf_id, vni); | |
4526 | return -1; | |
4527 | } | |
4528 | ||
4529 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
4530 | * VNI, | |
4531 | * install them. | |
4532 | */ | |
4533 | install_routes_for_vni(bgp, vpn); | |
4534 | ||
d7d97010 MK |
4535 | /* If we are advertising gateway mac-ip |
4536 | It needs to be conveyed again to zebra */ | |
4537 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
4538 | ||
d62a17ae | 4539 | return 0; |
b18825eb | 4540 | } |
14c1a7bf | 4541 | |
7724c0a1 | 4542 | /* |
4543 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
4544 | * EVPN routes from peers. | |
4545 | */ | |
d62a17ae | 4546 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 4547 | { |
9d303b37 DL |
4548 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4549 | void *))cleanup_vni_on_disable, | |
4550 | bgp); | |
7724c0a1 | 4551 | } |
4552 | ||
14c1a7bf | 4553 | /* |
4554 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
4555 | * BGP instance (default) is being freed. | |
4556 | */ | |
d62a17ae | 4557 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 4558 | { |
d62a17ae | 4559 | if (bgp->vnihash) |
9d303b37 DL |
4560 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
4561 | void *))free_vni_entry, | |
4562 | bgp); | |
d62a17ae | 4563 | if (bgp->import_rt_hash) |
4564 | hash_free(bgp->import_rt_hash); | |
4565 | bgp->import_rt_hash = NULL; | |
10ebe1ab MK |
4566 | if (bgp->vrf_import_rt_hash) |
4567 | hash_free(bgp->vrf_import_rt_hash); | |
4568 | bgp->vrf_import_rt_hash = NULL; | |
d62a17ae | 4569 | if (bgp->vnihash) |
4570 | hash_free(bgp->vnihash); | |
4571 | bgp->vnihash = NULL; | |
c581d8b0 | 4572 | if (bgp->vrf_import_rtl) |
bb7a24ab | 4573 | list_delete_and_null(&bgp->vrf_import_rtl); |
c581d8b0 | 4574 | if (bgp->vrf_export_rtl) |
bb7a24ab | 4575 | list_delete_and_null(&bgp->vrf_export_rtl); |
6a8657d0 | 4576 | if (bgp->l2vnis) |
bb7a24ab | 4577 | list_delete_and_null(&bgp->l2vnis); |
14c1a7bf | 4578 | } |
4579 | ||
4580 | /* | |
4581 | * Initialization for EVPN | |
4582 | * Create | |
4583 | * VNI hash table | |
4584 | * hash for RT to VNI | |
14c1a7bf | 4585 | */ |
d62a17ae | 4586 | void bgp_evpn_init(struct bgp *bgp) |
4587 | { | |
4588 | bgp->vnihash = | |
4589 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
4590 | bgp->import_rt_hash = | |
4591 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
4592 | "BGP Import RT Hash"); | |
10ebe1ab MK |
4593 | bgp->vrf_import_rt_hash = |
4594 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
4595 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
4596 | bgp->vrf_import_rtl = list_new(); |
4597 | bgp->vrf_import_rtl->cmp = | |
4598 | (int (*)(void *, void *))evpn_route_target_cmp; | |
4599 | ||
4600 | bgp->vrf_export_rtl = list_new(); | |
4601 | bgp->vrf_export_rtl->cmp = | |
4602 | (int (*)(void *, void *))evpn_route_target_cmp; | |
6a8657d0 | 4603 | bgp->l2vnis = list_new(); |
996c9314 | 4604 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 4605 | } |
10ebe1ab MK |
4606 | |
4607 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
4608 | { | |
4609 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4610 | } |