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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
14454c9f | 46 | #include "bgpd/bgp_errors.h" |
128ea8ab | 47 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 50 | |
51 | /* | |
52 | * Definitions and external declarations. | |
53 | */ | |
54 | extern struct zclient *zclient; | |
55 | ||
56 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 57 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 58 | |
59 | ||
60 | /* | |
61 | * Static function declarations | |
62 | */ | |
4b7e6066 | 63 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 64 | struct bgp_node *rn, |
40381db7 | 65 | struct bgp_path_info **pi); |
d62a17ae | 66 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
14c1a7bf | 67 | |
68 | /* | |
69 | * Private functions. | |
70 | */ | |
71 | ||
50f74cf1 | 72 | /* compare two IPV4 VTEP IPs */ |
ce167790 | 73 | static int evpn_vtep_ip_cmp(void *p1, void *p2) |
50f74cf1 | 74 | { |
75 | const struct in_addr *ip1 = p1; | |
76 | const struct in_addr *ip2 = p2; | |
77 | ||
ce167790 | 78 | return ip1->s_addr - ip2->s_addr; |
50f74cf1 | 79 | } |
80 | ||
81 | /* | |
82 | * Make hash key for ESI. | |
83 | */ | |
84 | static unsigned int esi_hash_keymake(void *p) | |
85 | { | |
86 | struct evpnes *pes = p; | |
87 | const void *pnt = (void *)pes->esi.val; | |
88 | ||
89 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
90 | } | |
91 | ||
92 | /* | |
93 | * Compare two ESIs. | |
94 | */ | |
74df8d6d | 95 | static bool esi_cmp(const void *p1, const void *p2) |
50f74cf1 | 96 | { |
97 | const struct evpnes *pes1 = p1; | |
98 | const struct evpnes *pes2 = p2; | |
99 | ||
100 | if (pes1 == NULL && pes2 == NULL) | |
74df8d6d | 101 | return true; |
50f74cf1 | 102 | |
103 | if (pes1 == NULL || pes2 == NULL) | |
74df8d6d | 104 | return false; |
50f74cf1 | 105 | |
106 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
107 | } | |
108 | ||
14c1a7bf | 109 | /* |
110 | * Make vni hash key. | |
111 | */ | |
d62a17ae | 112 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 113 | { |
d62a17ae | 114 | struct bgpevpn *vpn = p; |
115 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 116 | } |
117 | ||
118 | /* | |
119 | * Comparison function for vni hash | |
120 | */ | |
74df8d6d | 121 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 122 | { |
d62a17ae | 123 | const struct bgpevpn *vpn1 = p1; |
124 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 125 | |
d62a17ae | 126 | if (!vpn1 && !vpn2) |
74df8d6d | 127 | return true; |
d62a17ae | 128 | if (!vpn1 || !vpn2) |
74df8d6d | 129 | return false; |
d62a17ae | 130 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 131 | } |
132 | ||
64465785 DS |
133 | static int vni_list_cmp(void *p1, void *p2) |
134 | { | |
135 | const struct bgpevpn *vpn1 = p1; | |
136 | const struct bgpevpn *vpn2 = p2; | |
137 | ||
138 | return vpn1->vni - vpn2->vni; | |
139 | } | |
140 | ||
10ebe1ab MK |
141 | /* |
142 | * Make vrf import route target hash key. | |
143 | */ | |
144 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
145 | { | |
146 | struct vrf_irt_node *irt = p; | |
147 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
148 | |
149 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
150 | } |
151 | ||
152 | /* | |
153 | * Comparison function for vrf import rt hash | |
154 | */ | |
74df8d6d | 155 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
156 | { |
157 | const struct vrf_irt_node *irt1 = p1; | |
158 | const struct vrf_irt_node *irt2 = p2; | |
159 | ||
160 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 161 | return true; |
10ebe1ab MK |
162 | |
163 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 164 | return false; |
10ebe1ab MK |
165 | |
166 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
167 | } | |
168 | ||
169 | /* | |
170 | * Create a new vrf import_rt in default instance | |
171 | */ | |
172 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
173 | { | |
174 | struct bgp *bgp_def = NULL; | |
175 | struct vrf_irt_node *irt; | |
176 | ||
177 | bgp_def = bgp_get_default(); | |
178 | if (!bgp_def) { | |
e50f7cfd | 179 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 180 | "vrf import rt new - def instance not created yet"); |
10ebe1ab MK |
181 | return NULL; |
182 | } | |
183 | ||
184 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
185 | sizeof(struct vrf_irt_node)); | |
186 | if (!irt) | |
187 | return NULL; | |
188 | ||
189 | irt->rt = *rt; | |
190 | irt->vrfs = list_new(); | |
191 | ||
192 | /* Add to hash */ | |
193 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
194 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | return irt; | |
199 | } | |
200 | ||
201 | /* | |
202 | * Free the vrf import rt node | |
203 | */ | |
204 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
205 | { | |
206 | struct bgp *bgp_def = NULL; | |
207 | ||
208 | bgp_def = bgp_get_default(); | |
209 | if (!bgp_def) { | |
e50f7cfd | 210 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 211 | "vrf import rt free - def instance not created yet"); |
10ebe1ab MK |
212 | return; |
213 | } | |
214 | ||
215 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
6a154c88 | 216 | list_delete(&irt->vrfs); |
10ebe1ab MK |
217 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
218 | } | |
219 | ||
220 | /* | |
221 | * Function to lookup Import RT node - used to map a RT to set of | |
222 | * VNIs importing routes with that RT. | |
223 | */ | |
224 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
225 | { | |
226 | struct bgp *bgp_def = NULL; | |
227 | struct vrf_irt_node *irt; | |
228 | struct vrf_irt_node tmp; | |
229 | ||
230 | bgp_def = bgp_get_default(); | |
231 | if (!bgp_def) { | |
1c50c1c0 QY |
232 | flog_err(EC_BGP_NO_DFLT, |
233 | "vrf import rt lookup - def instance not created yet"); | |
10ebe1ab MK |
234 | return NULL; |
235 | } | |
236 | ||
237 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
238 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
239 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
240 | return irt; | |
241 | } | |
242 | ||
243 | /* | |
244 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
245 | */ | |
996c9314 | 246 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
247 | { |
248 | struct listnode *node = NULL, *nnode = NULL; | |
249 | struct bgp *tmp_bgp_vrf = NULL; | |
250 | ||
251 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
252 | if (tmp_bgp_vrf == bgp_vrf) | |
253 | return 1; | |
254 | } | |
255 | return 0; | |
256 | } | |
257 | ||
14c1a7bf | 258 | /* |
259 | * Make import route target hash key. | |
260 | */ | |
d62a17ae | 261 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 262 | { |
d62a17ae | 263 | struct irt_node *irt = p; |
264 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
265 | |
266 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 267 | } |
268 | ||
269 | /* | |
270 | * Comparison function for import rt hash | |
271 | */ | |
74df8d6d | 272 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 273 | { |
d62a17ae | 274 | const struct irt_node *irt1 = p1; |
275 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 276 | |
d62a17ae | 277 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 278 | return true; |
14c1a7bf | 279 | |
d62a17ae | 280 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 281 | return false; |
14c1a7bf | 282 | |
d62a17ae | 283 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 284 | } |
285 | ||
7724c0a1 | 286 | /* |
128ea8ab | 287 | * Create a new import_rt |
288 | */ | |
d62a17ae | 289 | static struct irt_node *import_rt_new(struct bgp *bgp, |
290 | struct ecommunity_val *rt) | |
128ea8ab | 291 | { |
d62a17ae | 292 | struct irt_node *irt; |
128ea8ab | 293 | |
d62a17ae | 294 | if (!bgp) |
295 | return NULL; | |
128ea8ab | 296 | |
d62a17ae | 297 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
298 | if (!irt) | |
299 | return NULL; | |
128ea8ab | 300 | |
d62a17ae | 301 | irt->rt = *rt; |
302 | irt->vnis = list_new(); | |
128ea8ab | 303 | |
d62a17ae | 304 | /* Add to hash */ |
305 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
306 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
307 | return NULL; | |
308 | } | |
128ea8ab | 309 | |
d62a17ae | 310 | return irt; |
128ea8ab | 311 | } |
312 | ||
313 | /* | |
314 | * Free the import rt node | |
7724c0a1 | 315 | */ |
d62a17ae | 316 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 317 | { |
d62a17ae | 318 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 319 | list_delete(&irt->vnis); |
d62a17ae | 320 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 321 | } |
322 | ||
14c1a7bf | 323 | /* |
128ea8ab | 324 | * Function to lookup Import RT node - used to map a RT to set of |
325 | * VNIs importing routes with that RT. | |
326 | */ | |
d62a17ae | 327 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
328 | struct ecommunity_val *rt) | |
128ea8ab | 329 | { |
d62a17ae | 330 | struct irt_node *irt; |
331 | struct irt_node tmp; | |
128ea8ab | 332 | |
d62a17ae | 333 | memset(&tmp, 0, sizeof(struct irt_node)); |
334 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
335 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
336 | return irt; | |
128ea8ab | 337 | } |
338 | ||
339 | /* | |
340 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
341 | */ | |
d62a17ae | 342 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 343 | { |
d62a17ae | 344 | struct listnode *node, *nnode; |
345 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 346 | |
d62a17ae | 347 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
348 | if (tmp_vpn == vpn) | |
349 | return 1; | |
350 | } | |
128ea8ab | 351 | |
d62a17ae | 352 | return 0; |
128ea8ab | 353 | } |
354 | ||
355 | /* | |
356 | * Compare Route Targets. | |
357 | */ | |
d62a17ae | 358 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
359 | struct ecommunity *ecom2) | |
128ea8ab | 360 | { |
d62a17ae | 361 | if (ecom1 && !ecom2) |
362 | return -1; | |
128ea8ab | 363 | |
d62a17ae | 364 | if (!ecom1 && ecom2) |
365 | return 1; | |
128ea8ab | 366 | |
d62a17ae | 367 | if (!ecom1 && !ecom2) |
368 | return 0; | |
128ea8ab | 369 | |
d62a17ae | 370 | if (ecom1->str && !ecom2->str) |
371 | return -1; | |
128ea8ab | 372 | |
d62a17ae | 373 | if (!ecom1->str && ecom2->str) |
374 | return 1; | |
128ea8ab | 375 | |
d62a17ae | 376 | if (!ecom1->str && !ecom2->str) |
377 | return 0; | |
128ea8ab | 378 | |
d62a17ae | 379 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 380 | } |
381 | ||
987d8198 DS |
382 | static void evpn_xxport_delete_ecomm(void *val) |
383 | { | |
384 | struct ecommunity *ecomm = val; | |
385 | ecommunity_free(&ecomm); | |
386 | } | |
387 | ||
128ea8ab | 388 | /* |
389 | * Mask off global-admin field of specified extended community (RT), | |
390 | * just retain the local-admin field. | |
391 | */ | |
d62a17ae | 392 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
393 | struct ecommunity_val *src) | |
128ea8ab | 394 | { |
d7c0a89a | 395 | uint8_t type; |
128ea8ab | 396 | |
d62a17ae | 397 | type = src->val[0]; |
398 | dst->val[0] = 0; | |
399 | if (type == ECOMMUNITY_ENCODE_AS) { | |
400 | dst->val[2] = dst->val[3] = 0; | |
401 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
402 | || type == ECOMMUNITY_ENCODE_IP) { | |
403 | dst->val[2] = dst->val[3] = 0; | |
404 | dst->val[4] = dst->val[5] = 0; | |
405 | } | |
128ea8ab | 406 | } |
407 | ||
10ebe1ab MK |
408 | /* |
409 | * Map one RT to specified VRF. | |
410 | * bgp_vrf = BGP vrf instance | |
411 | */ | |
996c9314 | 412 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
413 | { |
414 | struct vrf_irt_node *irt = NULL; | |
415 | struct ecommunity_val eval_tmp; | |
416 | ||
417 | /* If using "automatic" RT, | |
418 | * we only care about the local-admin sub-field. | |
419 | * This is to facilitate using L3VNI(VRF-VNI) | |
420 | * as the RT for EBGP peering too. | |
421 | */ | |
422 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 423 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
424 | mask_ecom_global_admin(&eval_tmp, eval); |
425 | ||
426 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
427 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
428 | /* Already mapped. */ | |
429 | return; | |
10ebe1ab | 430 | |
e066d6d0 | 431 | if (!irt) |
10ebe1ab | 432 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
433 | |
434 | /* Add VRF to the list for this RT. */ | |
435 | listnode_add(irt->vrfs, bgp_vrf); | |
436 | } | |
437 | ||
438 | /* | |
439 | * Unmap specified VRF from specified RT. If there are no other | |
440 | * VRFs for this RT, then the RT hash is deleted. | |
441 | * bgp_vrf: BGP VRF specific instance | |
442 | */ | |
996c9314 | 443 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
444 | { |
445 | /* Delete VRF from list for this RT. */ | |
446 | listnode_delete(irt->vrfs, bgp_vrf); | |
447 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
448 | vrf_import_rt_free(irt); |
449 | } | |
450 | } | |
451 | ||
128ea8ab | 452 | /* |
453 | * Map one RT to specified VNI. | |
14c1a7bf | 454 | */ |
d62a17ae | 455 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
456 | struct ecommunity_val *eval) | |
128ea8ab | 457 | { |
d62a17ae | 458 | struct irt_node *irt; |
459 | struct ecommunity_val eval_tmp; | |
128ea8ab | 460 | |
d62a17ae | 461 | /* If using "automatic" RT, we only care about the local-admin |
462 | * sub-field. | |
463 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
464 | */ | |
465 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
466 | if (!is_import_rt_configured(vpn)) | |
467 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 468 | |
d62a17ae | 469 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 470 | if (irt) |
d62a17ae | 471 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
472 | /* Already mapped. */ | |
473 | return; | |
128ea8ab | 474 | |
d62a17ae | 475 | if (!irt) { |
476 | irt = import_rt_new(bgp, &eval_tmp); | |
477 | assert(irt); | |
478 | } | |
128ea8ab | 479 | |
d62a17ae | 480 | /* Add VNI to the hash list for this RT. */ |
481 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 482 | } |
483 | ||
484 | /* | |
485 | * Unmap specified VNI from specified RT. If there are no other | |
486 | * VNIs for this RT, then the RT hash is deleted. | |
487 | */ | |
d62a17ae | 488 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
489 | struct irt_node *irt) | |
14c1a7bf | 490 | { |
d62a17ae | 491 | /* Delete VNI from hash list for this RT. */ |
492 | listnode_delete(irt->vnis, vpn); | |
493 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 494 | import_rt_free(bgp, irt); |
495 | } | |
14c1a7bf | 496 | } |
497 | ||
128ea8ab | 498 | /* |
499 | * Create RT extended community automatically from passed information: | |
500 | * of the form AS:VNI. | |
501 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
502 | * the need is to get a RT value that will be unique across different | |
503 | * VNIs but the same across routers (in the same AS) for a particular | |
504 | * VNI. | |
505 | */ | |
c581d8b0 | 506 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 507 | { |
d62a17ae | 508 | struct ecommunity_val eval; |
509 | struct ecommunity *ecomadd; | |
128ea8ab | 510 | |
bf1061d8 VB |
511 | if (bgp->advertise_autort_rfc8365) |
512 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 513 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 514 | |
d62a17ae | 515 | ecomadd = ecommunity_new(); |
516 | ecommunity_add_val(ecomadd, &eval); | |
517 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 518 | } |
14c1a7bf | 519 | |
520 | /* | |
128ea8ab | 521 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
522 | * creation of a VNI. | |
523 | */ | |
d62a17ae | 524 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 525 | { |
d62a17ae | 526 | bgp_evpn_derive_auto_rd(bgp, vpn); |
527 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
528 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 529 | } |
530 | ||
1ec31309 | 531 | /* |
532 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
533 | */ | |
534 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
535 | { | |
536 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
537 | return; | |
538 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
539 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
540 | } | |
541 | ||
128ea8ab | 542 | /* |
543 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 544 | */ |
d62a17ae | 545 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
546 | struct prefix_evpn *p, | |
547 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 548 | uint8_t flags, uint32_t seq) |
d62a17ae | 549 | { |
550 | struct stream *s; | |
551 | int ipa_len; | |
552 | char buf1[ETHER_ADDR_STRLEN]; | |
553 | char buf2[INET6_ADDRSTRLEN]; | |
554 | char buf3[INET6_ADDRSTRLEN]; | |
555 | ||
556 | /* Check socket. */ | |
557 | if (!zclient || zclient->sock < 0) | |
558 | return 0; | |
559 | ||
560 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
561 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
562 | if (BGP_DEBUG(zebra, ZEBRA)) | |
563 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
564 | __PRETTY_FUNCTION__); | |
d62a17ae | 565 | return 0; |
bb4ef1ae | 566 | } |
d62a17ae | 567 | s = zclient->obuf; |
568 | stream_reset(s); | |
569 | ||
996c9314 LB |
570 | zclient_create_header( |
571 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
572 | bgp->vrf_id); | |
d62a17ae | 573 | stream_putl(s, vpn->vni); |
3714a385 | 574 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 575 | /* IP address length and IP address, if any. */ |
3714a385 | 576 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 577 | stream_putl(s, 0); |
578 | else { | |
3714a385 | 579 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 580 | : IPV6_MAX_BYTELEN; |
581 | stream_putl(s, ipa_len); | |
3714a385 | 582 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 583 | } |
584 | stream_put_in_addr(s, &remote_vtep_ip); | |
585 | ||
ead40654 | 586 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 587 | /* Also TX the sequence number of the best route. */ |
588 | if (add) { | |
ead40654 | 589 | stream_putc(s, flags); |
f07e1c99 | 590 | stream_putl(s, seq); |
591 | } | |
d62a17ae | 592 | |
593 | stream_putw_at(s, 0, stream_get_endp(s)); | |
594 | ||
595 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 596 | zlog_debug( |
f07e1c99 | 597 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 598 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 599 | prefix_mac2str(&p->prefix.macip_addr.mac, |
600 | buf1, sizeof(buf1)), | |
601 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 602 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
603 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
604 | sizeof(buf2))); | |
d62a17ae | 605 | |
606 | return zclient_send_message(zclient); | |
7ef5a232 | 607 | } |
b18825eb | 608 | |
128ea8ab | 609 | /* |
610 | * Add (update) or delete remote VTEP from zebra. | |
611 | */ | |
d62a17ae | 612 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
613 | struct prefix_evpn *p, int add) | |
128ea8ab | 614 | { |
d62a17ae | 615 | struct stream *s; |
128ea8ab | 616 | |
d62a17ae | 617 | /* Check socket. */ |
618 | if (!zclient || zclient->sock < 0) | |
619 | return 0; | |
128ea8ab | 620 | |
d62a17ae | 621 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
622 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
623 | if (BGP_DEBUG(zebra, ZEBRA)) | |
624 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
625 | __PRETTY_FUNCTION__); | |
d62a17ae | 626 | return 0; |
bb4ef1ae | 627 | } |
128ea8ab | 628 | |
d62a17ae | 629 | s = zclient->obuf; |
630 | stream_reset(s); | |
128ea8ab | 631 | |
996c9314 LB |
632 | zclient_create_header( |
633 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
634 | bgp->vrf_id); | |
d62a17ae | 635 | stream_putl(s, vpn->vni); |
3714a385 | 636 | if (is_evpn_prefix_ipaddr_v4(p)) |
637 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
638 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 639 | flog_err( |
e50f7cfd | 640 | EC_BGP_VTEP_INVALID, |
d62a17ae | 641 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
642 | add ? "ADD" : "DEL", vpn->vni); | |
643 | return -1; | |
644 | } | |
128ea8ab | 645 | |
d62a17ae | 646 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 647 | |
d62a17ae | 648 | if (bgp_debug_zebra(NULL)) |
649 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
650 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 651 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 652 | |
d62a17ae | 653 | return zclient_send_message(zclient); |
128ea8ab | 654 | } |
655 | ||
50f74cf1 | 656 | /* |
657 | * Build extended community for EVPN ES (type-4) route | |
658 | */ | |
659 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
660 | struct attr *attr) | |
661 | { | |
662 | struct ecommunity ecom_encap; | |
663 | struct ecommunity ecom_es_rt; | |
664 | struct ecommunity_val eval; | |
665 | struct ecommunity_val eval_es_rt; | |
666 | bgp_encap_types tnl_type; | |
667 | struct ethaddr mac; | |
668 | ||
669 | /* Encap */ | |
670 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
671 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
672 | encode_encap_extcomm(tnl_type, &eval); | |
673 | ecom_encap.size = 1; | |
674 | ecom_encap.val = (uint8_t *)eval.val; | |
675 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
676 | ||
677 | /* ES import RT */ | |
678 | memset(&mac, 0, sizeof(struct ethaddr)); | |
679 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
680 | es_get_system_mac(&es->esi, &mac); | |
681 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
682 | ecom_es_rt.size = 1; | |
683 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
684 | attr->ecommunity = | |
685 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
686 | ||
687 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
688 | } | |
689 | ||
342dd0c6 | 690 | /* |
691 | * Build extended communities for EVPN prefix route. | |
692 | */ | |
693 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
694 | struct attr *attr) | |
695 | { | |
696 | struct ecommunity ecom_encap; | |
697 | struct ecommunity ecom_rmac; | |
698 | struct ecommunity_val eval; | |
699 | struct ecommunity_val eval_rmac; | |
700 | bgp_encap_types tnl_type; | |
701 | struct listnode *node, *nnode; | |
702 | struct ecommunity *ecom; | |
703 | struct list *vrf_export_rtl = NULL; | |
704 | ||
705 | /* Encap */ | |
706 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
707 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
708 | encode_encap_extcomm(tnl_type, &eval); | |
709 | ecom_encap.size = 1; | |
d7c0a89a | 710 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 711 | |
712 | /* Add Encap */ | |
713 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
714 | ||
715 | /* Add the export RTs for L3VNI/VRF */ | |
716 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
717 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
718 | attr->ecommunity = | |
719 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 720 | |
721 | /* add the router mac extended community */ | |
722 | if (!is_zero_mac(&attr->rmac)) { | |
723 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
724 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
725 | ecom_rmac.size = 1; | |
726 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
727 | attr->ecommunity = |
728 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 729 | } |
730 | ||
731 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
732 | } | |
733 | ||
128ea8ab | 734 | /* |
1ec31309 | 735 | * Build extended communities for EVPN route. |
736 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
737 | * and ENCAP extended communities are applicable for all routes. | |
738 | * The default gateway extended community and MAC mobility (sticky) extended | |
739 | * community are added as needed based on passed settings - only for type-2 | |
740 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
741 | * added, if present, based on passed settings - only for non-link-local | |
742 | * type-2 routes. | |
128ea8ab | 743 | */ |
7ec156a9 | 744 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 745 | int add_l3_ecomm) |
128ea8ab | 746 | { |
d62a17ae | 747 | struct ecommunity ecom_encap; |
748 | struct ecommunity ecom_sticky; | |
ead40654 | 749 | struct ecommunity ecom_default_gw; |
bc59a672 | 750 | struct ecommunity ecom_rmac; |
68e33151 | 751 | struct ecommunity ecom_na; |
d62a17ae | 752 | struct ecommunity_val eval; |
753 | struct ecommunity_val eval_sticky; | |
ead40654 | 754 | struct ecommunity_val eval_default_gw; |
bc59a672 | 755 | struct ecommunity_val eval_rmac; |
68e33151 CS |
756 | struct ecommunity_val eval_na; |
757 | ||
d62a17ae | 758 | bgp_encap_types tnl_type; |
759 | struct listnode *node, *nnode; | |
760 | struct ecommunity *ecom; | |
d7c0a89a | 761 | uint32_t seqnum; |
7a3e76f1 | 762 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 763 | |
d62a17ae | 764 | /* Encap */ |
765 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
766 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
767 | encode_encap_extcomm(tnl_type, &eval); | |
768 | ecom_encap.size = 1; | |
d7c0a89a | 769 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 770 | |
d62a17ae | 771 | /* Add Encap */ |
772 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 773 | |
7a3e76f1 | 774 | /* Add the export RTs for L2VNI */ |
d62a17ae | 775 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
776 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 777 | |
1ec31309 | 778 | /* Add the export RTs for L3VNI if told to - caller determines |
779 | * when this should be done. | |
523cafc4 | 780 | */ |
1ec31309 | 781 | if (add_l3_ecomm) { |
7ec156a9 MK |
782 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
783 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
784 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
785 | ecom)) | |
996c9314 LB |
786 | attr->ecommunity = ecommunity_merge( |
787 | attr->ecommunity, ecom); | |
7ec156a9 | 788 | } |
f1f8b53c | 789 | } |
7a3e76f1 | 790 | |
1ec31309 | 791 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 792 | if (attr->sticky) { |
793 | seqnum = 0; | |
794 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
795 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
796 | ecom_sticky.size = 1; | |
d7c0a89a | 797 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 798 | attr->ecommunity = |
799 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
800 | } | |
c85c03c7 | 801 | |
1ec31309 | 802 | /* Add RMAC, if told to. */ |
803 | if (add_l3_ecomm) { | |
bc59a672 MK |
804 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
805 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
806 | ecom_rmac.size = 1; | |
807 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
808 | attr->ecommunity = |
809 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
810 | } |
811 | ||
1ec31309 | 812 | /* Add default gateway, if needed. */ |
ead40654 MK |
813 | if (attr->default_gw) { |
814 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
815 | encode_default_gw_extcomm(&eval_default_gw); | |
816 | ecom_default_gw.size = 1; | |
817 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
818 | attr->ecommunity = |
819 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
820 | } |
821 | ||
68e33151 CS |
822 | if (attr->router_flag) { |
823 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
824 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
825 | ecom_na.size = 1; | |
826 | ecom_na.val = (uint8_t *)eval_na.val; | |
827 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
828 | &ecom_na); | |
829 | } | |
830 | ||
d62a17ae | 831 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 832 | } |
833 | ||
834 | /* | |
835 | * Add MAC mobility extended community to attribute. | |
836 | */ | |
d7c0a89a | 837 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 838 | { |
839 | struct ecommunity ecom_tmp; | |
840 | struct ecommunity_val eval; | |
d7c0a89a | 841 | uint8_t *ecom_val_ptr; |
d62a17ae | 842 | int i; |
d7c0a89a | 843 | uint8_t *pnt; |
d62a17ae | 844 | int type = 0; |
845 | int sub_type = 0; | |
846 | ||
847 | /* Build MM */ | |
848 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
849 | ||
850 | /* Find current MM ecommunity */ | |
421bb26a | 851 | ecom_val_ptr = NULL; |
d62a17ae | 852 | |
853 | if (attr->ecommunity) { | |
854 | for (i = 0; i < attr->ecommunity->size; i++) { | |
855 | pnt = attr->ecommunity->val + (i * 8); | |
856 | type = *pnt++; | |
857 | sub_type = *pnt++; | |
858 | ||
859 | if (type == ECOMMUNITY_ENCODE_EVPN | |
860 | && sub_type | |
861 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
862 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
863 | + (i * 8)); | |
d62a17ae | 864 | break; |
865 | } | |
866 | } | |
867 | } | |
868 | ||
869 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
870 | if (ecom_val_ptr) { |
871 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 872 | } |
873 | /* Add MM to existing */ | |
874 | else { | |
875 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
876 | ecom_tmp.size = 1; | |
d7c0a89a | 877 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 878 | |
f9a78910 DS |
879 | if (attr->ecommunity) |
880 | attr->ecommunity = | |
881 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
882 | else | |
883 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 884 | } |
128ea8ab | 885 | } |
886 | ||
887 | /* Install EVPN route into zebra. */ | |
d62a17ae | 888 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
889 | struct prefix_evpn *p, | |
f07e1c99 | 890 | struct in_addr remote_vtep_ip, uint8_t flags, |
891 | uint32_t seq) | |
128ea8ab | 892 | { |
d62a17ae | 893 | int ret; |
128ea8ab | 894 | |
d62a17ae | 895 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
896 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 897 | 1, flags, seq); |
d62a17ae | 898 | else |
899 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 900 | |
d62a17ae | 901 | return ret; |
128ea8ab | 902 | } |
903 | ||
904 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 905 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
906 | struct prefix_evpn *p, | |
907 | struct in_addr remote_vtep_ip) | |
128ea8ab | 908 | { |
d62a17ae | 909 | int ret; |
128ea8ab | 910 | |
d62a17ae | 911 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
912 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 913 | 0, 0, 0); |
d62a17ae | 914 | else |
915 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 916 | |
d62a17ae | 917 | return ret; |
128ea8ab | 918 | } |
919 | ||
920 | /* | |
921 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
922 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
923 | * from peers. | |
924 | */ | |
d62a17ae | 925 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
926 | struct bgp_node *rn, | |
4b7e6066 | 927 | struct bgp_path_info *old_local) |
128ea8ab | 928 | { |
d62a17ae | 929 | struct bgp_node *global_rn; |
40381db7 | 930 | struct bgp_path_info *pi; |
d62a17ae | 931 | afi_t afi = AFI_L2VPN; |
932 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 933 | |
d62a17ae | 934 | /* Locate route node in the global EVPN routing table. Note that |
935 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
936 | * L3VPN routes. | |
937 | */ | |
938 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
939 | (struct prefix *)&rn->p, &vpn->prd); | |
940 | if (global_rn) { | |
941 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 942 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 943 | |
d62a17ae | 944 | /* Schedule for processing - withdraws to peers happen from |
945 | * this table. | |
946 | */ | |
40381db7 | 947 | if (pi) |
d62a17ae | 948 | bgp_process(bgp, global_rn, afi, safi); |
949 | bgp_unlock_node(global_rn); | |
950 | } | |
128ea8ab | 951 | |
d62a17ae | 952 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 953 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 954 | } |
955 | ||
50f74cf1 | 956 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
957 | { | |
958 | struct in_addr *ip; | |
959 | ||
960 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
961 | if (!ip) | |
962 | return NULL; | |
963 | ||
964 | ip->s_addr = vtep.s_addr; | |
965 | return ip; | |
966 | } | |
967 | ||
968 | static void es_vtep_free(struct in_addr *ip) | |
969 | { | |
970 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
971 | } | |
972 | ||
973 | /* check if VTEP is already part of the list */ | |
974 | static int is_vtep_present_in_list(struct list *list, | |
975 | struct in_addr vtep) | |
976 | { | |
977 | struct listnode *node = NULL; | |
978 | struct in_addr *tmp; | |
979 | ||
980 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
981 | if (tmp->s_addr == vtep.s_addr) | |
982 | return 1; | |
983 | } | |
984 | return 0; | |
985 | } | |
986 | ||
2bb9eff4 DS |
987 | /* |
988 | * Best path for ES route was changed, | |
989 | * update the list of VTEPs for this ES | |
990 | */ | |
50f74cf1 | 991 | static int evpn_es_install_vtep(struct bgp *bgp, |
992 | struct evpnes *es, | |
993 | struct prefix_evpn *p, | |
994 | struct in_addr rvtep) | |
995 | { | |
996 | struct in_addr *vtep_ip; | |
997 | ||
998 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
999 | return 0; | |
1000 | ||
1001 | ||
1002 | vtep_ip = es_vtep_new(rvtep); | |
1003 | if (vtep_ip) | |
1004 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
2bb9eff4 DS |
1008 | /* |
1009 | * Best path for ES route was changed, | |
1010 | * update the list of VTEPs for this ES | |
1011 | */ | |
50f74cf1 | 1012 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1013 | struct evpnes *es, | |
1014 | struct prefix_evpn *p, | |
1015 | struct in_addr rvtep) | |
1016 | { | |
1017 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1018 | struct in_addr *tmp; | |
1019 | ||
1020 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1021 | if (tmp->s_addr == rvtep.s_addr) { | |
1022 | es_vtep_free(tmp); | |
1023 | node_to_del = node; | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | if (node_to_del) | |
1028 | list_delete_node(es->vtep_list, node_to_del); | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Calculate the best path for a ES(type-4) route. | |
1035 | */ | |
1036 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1037 | struct evpnes *es, | |
1038 | struct bgp_node *rn) | |
1039 | { | |
1040 | int ret = 0; | |
1041 | afi_t afi = AFI_L2VPN; | |
1042 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1043 | struct bgp_path_info *old_select; /* old best */ |
1044 | struct bgp_path_info *new_select; /* new best */ | |
1045 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1046 | |
1047 | /* Compute the best path. */ | |
1048 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1049 | &old_and_new, afi, safi); | |
1050 | old_select = old_and_new.old; | |
1051 | new_select = old_and_new.new; | |
1052 | ||
2bb9eff4 DS |
1053 | /* |
1054 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1055 | * updated |
1056 | */ | |
1057 | if (old_select && old_select == new_select | |
1058 | && old_select->type == ZEBRA_ROUTE_BGP | |
1059 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1060 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1061 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
50f74cf1 | 1062 | && !bgp->addpath_tx_used[afi][safi]) { |
1063 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1064 | ret = evpn_es_install_vtep(bgp, es, | |
1065 | (struct prefix_evpn *)&rn->p, | |
1066 | old_select->attr->nexthop); | |
1067 | } | |
1defdda8 | 1068 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1069 | bgp_zebra_clear_route_change_flags(rn); |
1070 | return ret; | |
1071 | } | |
1072 | ||
1073 | /* If the user did a "clear" this flag will be set */ | |
1074 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1075 | ||
2bb9eff4 DS |
1076 | /* |
1077 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1078 | * into the zebra RIB. |
1079 | */ | |
1080 | if (old_select || new_select) | |
1081 | bgp_bump_version(rn); | |
1082 | ||
1083 | if (old_select) | |
18ee8310 | 1084 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1085 | if (new_select) { |
18ee8310 DS |
1086 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1087 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1088 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1089 | } |
1090 | ||
1091 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1092 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1093 | ret = evpn_es_install_vtep(bgp, es, | |
1094 | (struct prefix_evpn *)&rn->p, | |
1095 | new_select->attr->nexthop); | |
1096 | } else { | |
1097 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1098 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1099 | ret = evpn_es_uninstall_vtep( |
1100 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1101 | old_select->attr->nexthop); | |
50f74cf1 | 1102 | } |
1103 | ||
1104 | /* Clear any route change flags. */ | |
1105 | bgp_zebra_clear_route_change_flags(rn); | |
1106 | ||
18ee8310 | 1107 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1108 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1109 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1110 | |
1111 | return ret; | |
1112 | } | |
1113 | ||
128ea8ab | 1114 | /* |
1115 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1116 | * if appropriate. | |
1117 | */ | |
d62a17ae | 1118 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1119 | struct bgp_node *rn) | |
1120 | { | |
4b7e6066 DS |
1121 | struct bgp_path_info *old_select, *new_select; |
1122 | struct bgp_path_info_pair old_and_new; | |
68e33151 | 1123 | struct prefix_evpn *evp; |
d62a17ae | 1124 | afi_t afi = AFI_L2VPN; |
1125 | safi_t safi = SAFI_EVPN; | |
1126 | int ret = 0; | |
d7c0a89a | 1127 | uint8_t flags = 0; |
d62a17ae | 1128 | |
1129 | /* Compute the best path. */ | |
1130 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1131 | afi, safi); | |
1132 | old_select = old_and_new.old; | |
1133 | new_select = old_and_new.new; | |
1134 | ||
68e33151 | 1135 | evp = (struct prefix_evpn *)&rn->p; |
d62a17ae | 1136 | /* If the best path hasn't changed - see if there is still something to |
1137 | * update | |
1138 | * to zebra RIB. | |
1139 | */ | |
1140 | if (old_select && old_select == new_select | |
1141 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1142 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1143 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1144 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
d62a17ae | 1145 | && !bgp->addpath_tx_used[afi][safi]) { |
ead40654 MK |
1146 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1147 | if (old_select->attr->sticky) | |
1148 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1149 | if (old_select->attr->default_gw) | |
1150 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1151 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1152 | old_select->attr->router_flag) | |
1153 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1154 | ||
996c9314 LB |
1155 | ret = evpn_zebra_install( |
1156 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
f07e1c99 | 1157 | old_select->attr->nexthop, flags, |
1158 | mac_mobility_seqnum(old_select->attr)); | |
ead40654 | 1159 | } |
1defdda8 | 1160 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1161 | bgp_zebra_clear_route_change_flags(rn); |
1162 | return ret; | |
1163 | } | |
1164 | ||
1165 | /* If the user did a "clear" this flag will be set */ | |
1166 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1167 | ||
1168 | /* bestpath has changed; update relevant fields and install or uninstall | |
1169 | * into the zebra RIB. | |
1170 | */ | |
1171 | if (old_select || new_select) | |
1172 | bgp_bump_version(rn); | |
1173 | ||
1174 | if (old_select) | |
18ee8310 | 1175 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1176 | if (new_select) { |
18ee8310 DS |
1177 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1178 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1179 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1180 | } |
1181 | ||
1182 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1183 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1184 | flags = 0; |
1185 | if (new_select->attr->sticky) | |
1186 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1187 | if (new_select->attr->default_gw) | |
1188 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1189 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1190 | new_select->attr->router_flag) | |
1191 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1192 | ||
d62a17ae | 1193 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
f07e1c99 | 1194 | new_select->attr->nexthop, flags, |
1195 | mac_mobility_seqnum(new_select->attr)); | |
d62a17ae | 1196 | /* If an old best existed and it was a "local" route, the only |
1197 | * reason | |
1198 | * it would be supplanted is due to MAC mobility procedures. So, | |
1199 | * we | |
1200 | * need to do an implicit delete and withdraw that route from | |
1201 | * peers. | |
1202 | */ | |
1203 | if (old_select && old_select->peer == bgp->peer_self | |
1204 | && old_select->type == ZEBRA_ROUTE_BGP | |
1205 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1206 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1207 | } else { | |
1208 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1209 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1210 | ret = evpn_zebra_uninstall(bgp, vpn, |
1211 | (struct prefix_evpn *)&rn->p, | |
1212 | old_select->attr->nexthop); | |
1213 | } | |
1214 | ||
1215 | /* Clear any route change flags. */ | |
1216 | bgp_zebra_clear_route_change_flags(rn); | |
1217 | ||
18ee8310 | 1218 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1219 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1220 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1221 | |
1222 | return ret; | |
128ea8ab | 1223 | } |
1224 | ||
ead40654 MK |
1225 | /* |
1226 | * Return true if the local ri for this rn is of type gateway mac | |
1227 | */ | |
1228 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1229 | { | |
40381db7 DS |
1230 | struct bgp_path_info *tmp_pi = NULL; |
1231 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1232 | |
40381db7 DS |
1233 | local_pi = NULL; |
1234 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1235 | if (tmp_pi->peer == bgp->peer_self | |
1236 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1237 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1238 | local_pi = tmp_pi; | |
ead40654 MK |
1239 | } |
1240 | ||
40381db7 | 1241 | if (!local_pi) |
ead40654 MK |
1242 | return 0; |
1243 | ||
40381db7 | 1244 | return local_pi->attr->default_gw; |
ead40654 MK |
1245 | } |
1246 | ||
c85c03c7 | 1247 | |
1248 | /* | |
1249 | * Return true if the local ri for this rn has sticky set | |
1250 | */ | |
d62a17ae | 1251 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1252 | { |
40381db7 DS |
1253 | struct bgp_path_info *tmp_pi; |
1254 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1255 | |
40381db7 DS |
1256 | local_pi = NULL; |
1257 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1258 | if (tmp_pi->peer == bgp->peer_self | |
1259 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1260 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1261 | local_pi = tmp_pi; | |
d62a17ae | 1262 | } |
c85c03c7 | 1263 | |
40381db7 | 1264 | if (!local_pi) |
d62a17ae | 1265 | return 0; |
c85c03c7 | 1266 | |
40381db7 | 1267 | return local_pi->attr->sticky; |
c85c03c7 | 1268 | } |
1269 | ||
50f74cf1 | 1270 | /* |
1271 | * create or update EVPN type4 route entry. | |
1272 | * This could be in the ES table or the global table. | |
1273 | * TODO: handle remote ES (type4) routes as well | |
1274 | */ | |
4b7e6066 | 1275 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1276 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1277 | struct bgp_node *rn, struct attr *attr, |
1278 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1279 | int *route_changed) |
1280 | { | |
1281 | char buf[ESI_STR_LEN]; | |
1282 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1283 | struct bgp_path_info *tmp_pi = NULL; |
1284 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1285 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1286 | struct attr *attr_new = NULL; |
1287 | struct prefix_evpn *evp = NULL; | |
1288 | ||
1289 | *ri = NULL; | |
1290 | *route_changed = 1; | |
1291 | evp = (struct prefix_evpn *)&rn->p; | |
1292 | ||
1293 | /* locate the local and remote entries if any */ | |
40381db7 DS |
1294 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1295 | if (tmp_pi->peer == bgp->peer_self | |
1296 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1297 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1298 | local_pi = tmp_pi; | |
1299 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1300 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1301 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1302 | remote_pi = tmp_pi; | |
50f74cf1 | 1303 | } |
1304 | ||
40381db7 | 1305 | /* we don't expect to see a remote_pi at this point. |
50f74cf1 | 1306 | * An ES route has esi + vtep_ip as the key, |
1307 | * We shouldn't see the same route from any other vtep. | |
1308 | */ | |
40381db7 | 1309 | if (remote_pi) { |
af4c2728 | 1310 | flog_err( |
e50f7cfd | 1311 | EC_BGP_ES_INVALID, |
14454c9f DS |
1312 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1313 | bgp->vrf_id, | |
1314 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1315 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1316 | return -1; |
1317 | } | |
1318 | ||
40381db7 | 1319 | if (!local_pi && !add) |
50f74cf1 | 1320 | return 0; |
1321 | ||
1322 | /* create or update the entry */ | |
40381db7 | 1323 | if (!local_pi) { |
50f74cf1 | 1324 | |
1325 | /* Add or update attribute to hash */ | |
1326 | attr_new = bgp_attr_intern(attr); | |
1327 | ||
1328 | /* Create new route with its attribute. */ | |
40381db7 DS |
1329 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1330 | bgp->peer_self, attr_new, rn); | |
1331 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1332 | |
1333 | /* add the newly created path to the route-node */ | |
40381db7 | 1334 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1335 | } else { |
40381db7 DS |
1336 | tmp_pi = local_pi; |
1337 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1338 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1339 | *route_changed = 0; |
1340 | else { | |
1341 | /* The attribute has changed. | |
1342 | * Add (or update) attribute to hash. */ | |
1343 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1344 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1345 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1346 | |
1347 | /* Restore route, if needed. */ | |
40381db7 DS |
1348 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1349 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1350 | |
1351 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1352 | bgp_attr_unintern(&tmp_pi->attr); |
1353 | tmp_pi->attr = attr_new; | |
1354 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1355 | } |
1356 | } | |
1357 | ||
1358 | /* Return back the route entry. */ | |
40381db7 | 1359 | *ri = tmp_pi; |
50f74cf1 | 1360 | return 0; |
1361 | } | |
1362 | ||
1363 | /* update evpn es (type-4) route */ | |
1364 | static int update_evpn_type4_route(struct bgp *bgp, | |
1365 | struct evpnes *es, | |
1366 | struct prefix_evpn *p) | |
1367 | { | |
1368 | int ret = 0; | |
1369 | int route_changed = 0; | |
1370 | char buf[ESI_STR_LEN]; | |
1371 | char buf1[INET6_ADDRSTRLEN]; | |
1372 | afi_t afi = AFI_L2VPN; | |
1373 | safi_t safi = SAFI_EVPN; | |
1374 | struct attr attr; | |
1375 | struct attr *attr_new = NULL; | |
1376 | struct bgp_node *rn = NULL; | |
40381db7 | 1377 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1378 | |
1379 | memset(&attr, 0, sizeof(struct attr)); | |
1380 | ||
1381 | /* Build path-attribute for this route. */ | |
1382 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1383 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1384 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1385 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1386 | ||
1387 | /* Set up extended community. */ | |
1388 | build_evpn_type4_route_extcomm(es, &attr); | |
1389 | ||
1390 | /* First, create (or fetch) route node within the ESI. */ | |
1391 | /* NOTE: There is no RD here. */ | |
1392 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1393 | ||
1394 | /* Create or update route entry. */ | |
40381db7 DS |
1395 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1396 | &pi, &route_changed); | |
50f74cf1 | 1397 | if (ret != 0) { |
1c50c1c0 QY |
1398 | flog_err(EC_BGP_ES_INVALID, |
1399 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1400 | bgp->vrf_id, | |
1401 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1402 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1403 | } |
1404 | ||
40381db7 DS |
1405 | assert(pi); |
1406 | attr_new = pi->attr; | |
50f74cf1 | 1407 | |
1408 | /* Perform route selection; | |
1409 | * this is just to set the flags correctly | |
1410 | * as local route in the ES always wins. | |
1411 | */ | |
1412 | evpn_es_route_select_install(bgp, es, rn); | |
1413 | bgp_unlock_node(rn); | |
1414 | ||
1415 | /* If this is a new route or some attribute has changed, export the | |
1416 | * route to the global table. The route will be advertised to peers | |
1417 | * from there. Note that this table is a 2-level tree (RD-level + | |
1418 | * Prefix-level) similar to L3VPN routes. | |
1419 | */ | |
1420 | if (route_changed) { | |
40381db7 | 1421 | struct bgp_path_info *global_pi; |
50f74cf1 | 1422 | |
1423 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1424 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1425 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1426 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1427 | |
1428 | /* Schedule for processing and unlock node. */ | |
1429 | bgp_process(bgp, rn, afi, safi); | |
1430 | bgp_unlock_node(rn); | |
1431 | } | |
1432 | ||
1433 | /* Unintern temporary. */ | |
1434 | aspath_unintern(&attr.aspath); | |
1435 | return 0; | |
1436 | } | |
1437 | ||
342dd0c6 | 1438 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1439 | struct bgp *bgp_vrf, afi_t afi, | |
1440 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1441 | struct attr *attr, int *route_changed) |
342dd0c6 | 1442 | { |
1443 | struct attr *attr_new = NULL; | |
40381db7 | 1444 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1445 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1446 | struct bgp_path_info *local_pi = NULL; |
1447 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1448 | |
5424b7ba | 1449 | *route_changed = 0; |
342dd0c6 | 1450 | /* locate the local route entry if any */ |
40381db7 DS |
1451 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1452 | if (tmp_pi->peer == bgp_def->peer_self | |
1453 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1454 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1455 | local_pi = tmp_pi; | |
342dd0c6 | 1456 | } |
1457 | ||
2bb9eff4 | 1458 | /* |
0437e105 | 1459 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1460 | * Otherwise see if route attr has changed |
523cafc4 | 1461 | */ |
40381db7 | 1462 | if (!local_pi) { |
342dd0c6 | 1463 | |
5424b7ba MK |
1464 | /* route has changed as this is the first entry */ |
1465 | *route_changed = 1; | |
1466 | ||
342dd0c6 | 1467 | /* Add (or update) attribute to hash. */ |
1468 | attr_new = bgp_attr_intern(attr); | |
1469 | ||
1470 | /* create the route info from attribute */ | |
40381db7 | 1471 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
342dd0c6 | 1472 | bgp_def->peer_self, attr_new, rn); |
40381db7 | 1473 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1474 | |
b57ba6d2 | 1475 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1476 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1477 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1478 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1479 | pi->extra->num_labels = 1; | |
342dd0c6 | 1480 | |
1481 | /* add the route entry to route node*/ | |
40381db7 | 1482 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1483 | } else { |
1484 | ||
40381db7 DS |
1485 | tmp_pi = local_pi; |
1486 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1487 | |
1488 | /* attribute changed */ | |
1489 | *route_changed = 1; | |
1490 | ||
342dd0c6 | 1491 | /* The attribute has changed. */ |
1492 | /* Add (or update) attribute to hash. */ | |
1493 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1494 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1495 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1496 | |
1497 | /* Restore route, if needed. */ | |
40381db7 DS |
1498 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1499 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1500 | |
1501 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1502 | bgp_attr_unintern(&tmp_pi->attr); |
1503 | tmp_pi->attr = attr_new; | |
1504 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1505 | } |
1506 | } | |
1507 | return 0; | |
1508 | } | |
1509 | ||
1510 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1511 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1512 | struct attr *src_attr) | |
342dd0c6 | 1513 | { |
1514 | afi_t afi = AFI_L2VPN; | |
1515 | safi_t safi = SAFI_EVPN; | |
1516 | struct attr attr; | |
1517 | struct bgp_node *rn = NULL; | |
1518 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1519 | int route_changed = 0; |
342dd0c6 | 1520 | |
1521 | bgp_def = bgp_get_default(); | |
1522 | if (!bgp_def) | |
faafdfa8 | 1523 | return 0; |
342dd0c6 | 1524 | |
2f69f6d3 | 1525 | /* Build path attribute for this route - use the source attr, if |
1526 | * present, else treat as locally originated. | |
1527 | */ | |
1528 | if (src_attr) | |
1529 | bgp_attr_dup(&attr, src_attr); | |
1530 | else { | |
1531 | memset(&attr, 0, sizeof(struct attr)); | |
1532 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1533 | } | |
1534 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1535 | attr.nexthop = bgp_vrf->originator_ip; |
1536 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1537 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1538 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1539 | ||
1540 | /* Setup RT and encap extended community */ | |
1541 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1542 | ||
1543 | /* get the route node in global table */ | |
1544 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1545 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1546 | assert(rn); |
1547 | ||
1548 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1549 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1550 | &route_changed); | |
342dd0c6 | 1551 | |
1552 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1553 | if (route_changed) { |
1554 | bgp_process(bgp_def, rn, afi, safi); | |
1555 | bgp_unlock_node(rn); | |
1556 | } | |
342dd0c6 | 1557 | |
1558 | /* uninten temporary */ | |
5ee65f6f | 1559 | if (!src_attr) |
1560 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1561 | return 0; |
1562 | } | |
1563 | ||
128ea8ab | 1564 | /* |
1565 | * Create or update EVPN route entry. This could be in the VNI route table | |
1566 | * or the global route table. | |
1567 | */ | |
d62a17ae | 1568 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1569 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1570 | struct attr *attr, int add, |
40381db7 | 1571 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1572 | uint32_t seq) |
d62a17ae | 1573 | { |
40381db7 DS |
1574 | struct bgp_path_info *tmp_pi; |
1575 | struct bgp_path_info *local_pi; | |
d62a17ae | 1576 | struct attr *attr_new; |
b57ba6d2 | 1577 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1578 | uint32_t num_labels = 1; |
d62a17ae | 1579 | int route_change = 1; |
d7c0a89a | 1580 | uint8_t sticky = 0; |
b57ba6d2 | 1581 | struct prefix_evpn *evp; |
d62a17ae | 1582 | |
40381db7 | 1583 | *pi = NULL; |
b57ba6d2 MK |
1584 | evp = (struct prefix_evpn *)&rn->p; |
1585 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1586 | |
f07e1c99 | 1587 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 DS |
1588 | local_pi = NULL; |
1589 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { | |
1590 | if (tmp_pi->peer == bgp->peer_self | |
1591 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1592 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1593 | local_pi = tmp_pi; | |
d62a17ae | 1594 | } |
1595 | ||
1596 | /* If route doesn't exist already, create a new one, if told to. | |
1597 | * Otherwise act based on whether the attributes of the route have | |
1598 | * changed or not. | |
1599 | */ | |
40381db7 | 1600 | if (!local_pi && !add) |
d62a17ae | 1601 | return 0; |
1602 | ||
f07e1c99 | 1603 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1604 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1605 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1606 | |
40381db7 | 1607 | if (!local_pi) { |
d62a17ae | 1608 | /* Add (or update) attribute to hash. */ |
1609 | attr_new = bgp_attr_intern(attr); | |
1610 | ||
1611 | /* Extract MAC mobility sequence number, if any. */ | |
1612 | attr_new->mm_seqnum = | |
1613 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1614 | attr_new->sticky = sticky; | |
1615 | ||
1616 | /* Create new route with its attribute. */ | |
40381db7 | 1617 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1618 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1619 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1620 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1621 | |
1622 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1623 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1624 | |
1625 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1626 | * Only attach second label if we are advertising two labels for | |
1627 | * type-2 routes. | |
1628 | */ | |
996c9314 LB |
1629 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1630 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1631 | vni_t l3vni; |
1632 | ||
1633 | l3vni = bgpevpn_get_l3vni(vpn); | |
1634 | if (l3vni) { | |
1635 | vni2label(l3vni, &label[1]); | |
1636 | num_labels++; | |
1637 | } | |
1638 | } | |
d62a17ae | 1639 | |
40381db7 DS |
1640 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1641 | tmp_pi->extra->num_labels = num_labels; | |
1642 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1643 | } else { |
40381db7 DS |
1644 | tmp_pi = local_pi; |
1645 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1646 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1647 | route_change = 0; |
1648 | else { | |
c48d9f5f MK |
1649 | /* |
1650 | * The attributes have changed, type-2 routes needs to | |
1651 | * be advertised with right labels. | |
1652 | */ | |
1653 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1654 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1655 | && CHECK_FLAG(vpn->flags, | |
1656 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1657 | vni_t l3vni; |
1658 | ||
1659 | l3vni = bgpevpn_get_l3vni(vpn); | |
1660 | if (l3vni) { | |
1661 | vni2label(l3vni, &label[1]); | |
1662 | num_labels++; | |
1663 | } | |
1664 | } | |
40381db7 DS |
1665 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1666 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1667 | |
d62a17ae | 1668 | /* The attribute has changed. */ |
1669 | /* Add (or update) attribute to hash. */ | |
1670 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1671 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1672 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1673 | |
f07e1c99 | 1674 | /* Extract MAC mobility sequence number, if any. */ |
1675 | attr_new->mm_seqnum = | |
1676 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1677 | attr_new->sticky = sticky; | |
1678 | ||
d62a17ae | 1679 | /* Restore route, if needed. */ |
40381db7 DS |
1680 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1681 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1682 | |
1683 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1684 | bgp_attr_unintern(&tmp_pi->attr); |
1685 | tmp_pi->attr = attr_new; | |
1686 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1687 | } |
1688 | } | |
1689 | ||
1690 | /* Return back the route entry. */ | |
40381db7 | 1691 | *pi = tmp_pi; |
d62a17ae | 1692 | return route_change; |
128ea8ab | 1693 | } |
1694 | ||
1695 | /* | |
1696 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1697 | * and schedule for processing. | |
1698 | */ | |
d62a17ae | 1699 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1700 | struct prefix_evpn *p, uint8_t flags, |
1701 | uint32_t seq) | |
128ea8ab | 1702 | { |
d62a17ae | 1703 | struct bgp_node *rn; |
1704 | struct attr attr; | |
1705 | struct attr *attr_new; | |
1ec31309 | 1706 | int add_l3_ecomm = 0; |
40381db7 | 1707 | struct bgp_path_info *pi; |
d62a17ae | 1708 | afi_t afi = AFI_L2VPN; |
1709 | safi_t safi = SAFI_EVPN; | |
1710 | int route_change; | |
128ea8ab | 1711 | |
d62a17ae | 1712 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1713 | |
d62a17ae | 1714 | /* Build path-attribute for this route. */ |
1715 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1716 | attr.nexthop = vpn->originator_ip; | |
1717 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1718 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1719 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1720 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1721 | attr.router_flag = CHECK_FLAG(flags, |
1722 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1723 | |
1724 | /* PMSI is only needed for type-3 routes */ | |
1725 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1726 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1727 | ||
1ec31309 | 1728 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1729 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1730 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1731 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1732 | |
1ec31309 | 1733 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1734 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1735 | * these routes. | |
1736 | */ | |
1737 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1738 | (is_evpn_prefix_ipaddr_v4(p) || |
1739 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1740 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1741 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1742 | add_l3_ecomm = 1; |
1743 | ||
1744 | /* Set up extended community. */ | |
1745 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1746 | |
d62a17ae | 1747 | /* First, create (or fetch) route node within the VNI. */ |
1748 | /* NOTE: There is no RD here. */ | |
1749 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1750 | |
d62a17ae | 1751 | /* Create or update route entry. */ |
1752 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1753 | 1, &pi, flags, seq); |
1754 | assert(pi); | |
1755 | attr_new = pi->attr; | |
128ea8ab | 1756 | |
d62a17ae | 1757 | /* Perform route selection; this is just to set the flags correctly |
1758 | * as local route in the VNI always wins. | |
1759 | */ | |
1760 | evpn_route_select_install(bgp, vpn, rn); | |
1761 | bgp_unlock_node(rn); | |
128ea8ab | 1762 | |
d62a17ae | 1763 | /* If this is a new route or some attribute has changed, export the |
1764 | * route to the global table. The route will be advertised to peers | |
1765 | * from there. Note that this table is a 2-level tree (RD-level + | |
1766 | * Prefix-level) similar to L3VPN routes. | |
1767 | */ | |
1768 | if (route_change) { | |
40381db7 | 1769 | struct bgp_path_info *global_pi; |
128ea8ab | 1770 | |
d62a17ae | 1771 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1772 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1773 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1774 | &global_pi, flags, seq); |
128ea8ab | 1775 | |
d62a17ae | 1776 | /* Schedule for processing and unlock node. */ |
1777 | bgp_process(bgp, rn, afi, safi); | |
1778 | bgp_unlock_node(rn); | |
1779 | } | |
128ea8ab | 1780 | |
d62a17ae | 1781 | /* Unintern temporary. */ |
1782 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1783 | |
d62a17ae | 1784 | return 0; |
128ea8ab | 1785 | } |
1786 | ||
50f74cf1 | 1787 | /* |
1788 | * Delete EVPN route entry. | |
1789 | * The entry can be in ESI/VNI table or the global table. | |
1790 | */ | |
4b7e6066 | 1791 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1792 | struct bgp_node *rn, |
40381db7 | 1793 | struct bgp_path_info **pi) |
342dd0c6 | 1794 | { |
40381db7 | 1795 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1796 | |
40381db7 | 1797 | *pi = NULL; |
342dd0c6 | 1798 | |
50f74cf1 | 1799 | /* Now, find matching route. */ |
40381db7 DS |
1800 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) |
1801 | if (tmp_pi->peer == bgp->peer_self | |
1802 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1803 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1804 | break; |
1805 | ||
40381db7 | 1806 | *pi = tmp_pi; |
342dd0c6 | 1807 | |
1808 | /* Mark route for delete. */ | |
40381db7 DS |
1809 | if (tmp_pi) |
1810 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1811 | } |
1812 | ||
50f74cf1 | 1813 | |
1814 | ||
1815 | /* Delete EVPN ES (type-4) route */ | |
1816 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1817 | struct evpnes *es, | |
1818 | struct prefix_evpn *p) | |
1819 | { | |
1820 | afi_t afi = AFI_L2VPN; | |
1821 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1822 | struct bgp_path_info *pi; |
50f74cf1 | 1823 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1824 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1825 | ||
1826 | /* First, locate the route node within the ESI. | |
1827 | * If it doesn't exist, ther is nothing to do. | |
1828 | * Note: there is no RD here. | |
1829 | */ | |
1830 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1831 | if (!rn) |
50f74cf1 | 1832 | return 0; |
1833 | ||
1834 | /* Next, locate route node in the global EVPN routing table. | |
1835 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1836 | */ | |
1837 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1838 | (struct prefix *)p, &es->prd); | |
1839 | if (global_rn) { | |
1840 | ||
1841 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1842 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1843 | |
1844 | /* Schedule for processing - withdraws to peers happen from | |
1845 | * this table. | |
1846 | */ | |
40381db7 | 1847 | if (pi) |
50f74cf1 | 1848 | bgp_process(bgp, global_rn, afi, safi); |
1849 | bgp_unlock_node(global_rn); | |
1850 | } | |
1851 | ||
1852 | /* | |
1853 | * Delete route entry in the ESI route table. | |
1854 | * This can just be removed. | |
1855 | */ | |
40381db7 DS |
1856 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1857 | if (pi) | |
1858 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1859 | bgp_unlock_node(rn); |
1860 | return 0; | |
1861 | } | |
1862 | ||
342dd0c6 | 1863 | /* Delete EVPN type5 route */ |
996c9314 | 1864 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1865 | { |
1866 | afi_t afi = AFI_L2VPN; | |
1867 | safi_t safi = SAFI_EVPN; | |
1868 | struct bgp_node *rn = NULL; | |
40381db7 | 1869 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1870 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
1871 | ||
1872 | bgp_def = bgp_get_default(); | |
1873 | if (!bgp_def) | |
faafdfa8 | 1874 | return 0; |
342dd0c6 | 1875 | |
1876 | /* locate the global route entry for this type-5 prefix */ | |
1877 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1878 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1879 | if (!rn) | |
1880 | return 0; | |
1881 | ||
40381db7 DS |
1882 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &pi); |
1883 | if (pi) | |
342dd0c6 | 1884 | bgp_process(bgp_def, rn, afi, safi); |
1885 | bgp_unlock_node(rn); | |
1886 | return 0; | |
1887 | } | |
1888 | ||
128ea8ab | 1889 | /* |
1890 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1891 | * schedule for processing. | |
1892 | */ | |
d62a17ae | 1893 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1894 | struct prefix_evpn *p) | |
1895 | { | |
1896 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1897 | struct bgp_path_info *pi; |
d62a17ae | 1898 | afi_t afi = AFI_L2VPN; |
1899 | safi_t safi = SAFI_EVPN; | |
1900 | ||
1901 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1902 | * there | |
1903 | * is nothing further to do. | |
1904 | */ | |
1905 | /* NOTE: There is no RD here. */ | |
1906 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1907 | if (!rn) | |
1908 | return 0; | |
1909 | ||
1910 | /* Next, locate route node in the global EVPN routing table. Note that | |
1911 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1912 | * L3VPN routes. | |
1913 | */ | |
1914 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1915 | (struct prefix *)p, &vpn->prd); | |
1916 | if (global_rn) { | |
1917 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1918 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 1919 | |
1920 | /* Schedule for processing - withdraws to peers happen from | |
1921 | * this table. | |
1922 | */ | |
40381db7 | 1923 | if (pi) |
d62a17ae | 1924 | bgp_process(bgp, global_rn, afi, safi); |
1925 | bgp_unlock_node(global_rn); | |
1926 | } | |
1927 | ||
1928 | /* Delete route entry in the VNI route table. This can just be removed. | |
1929 | */ | |
40381db7 DS |
1930 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1931 | if (pi) | |
1932 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 1933 | bgp_unlock_node(rn); |
1934 | ||
1935 | return 0; | |
128ea8ab | 1936 | } |
1937 | ||
1938 | /* | |
1939 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1940 | * be scheduled for advertise to peers. | |
1941 | */ | |
d62a17ae | 1942 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1943 | { | |
1944 | afi_t afi; | |
1945 | safi_t safi; | |
1946 | struct bgp_node *rn; | |
40381db7 | 1947 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 1948 | struct attr attr; |
d62a17ae | 1949 | struct attr *attr_new; |
f07e1c99 | 1950 | uint32_t seq; |
1ec31309 | 1951 | int add_l3_ecomm = 0; |
d62a17ae | 1952 | |
1953 | afi = AFI_L2VPN; | |
1954 | safi = SAFI_EVPN; | |
d62a17ae | 1955 | |
1956 | /* Walk this VNI's route table and update local type-2 routes. For any | |
1957 | * routes updated, update corresponding entry in the global table too. | |
1958 | */ | |
1959 | for (rn = bgp_table_top(vpn->route_table); rn; | |
1960 | rn = bgp_route_next(rn)) { | |
1961 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1962 | struct bgp_node *rd_rn; | |
40381db7 | 1963 | struct bgp_path_info *global_pi; |
d62a17ae | 1964 | |
1965 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1966 | continue; | |
1967 | ||
f07e1c99 | 1968 | /* Identify local route. */ |
40381db7 DS |
1969 | for (tmp_pi = rn->info; tmp_pi; tmp_pi = tmp_pi->next) { |
1970 | if (tmp_pi->peer == bgp->peer_self | |
1971 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1972 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 1973 | break; |
7ec156a9 | 1974 | } |
d62a17ae | 1975 | |
40381db7 | 1976 | if (!tmp_pi) |
d62a17ae | 1977 | continue; |
1978 | ||
f07e1c99 | 1979 | /* |
1980 | * Build attribute per local route as the MAC mobility and | |
1981 | * some other values could differ for different routes. The | |
1982 | * attributes will be shared in the hash table. | |
1983 | */ | |
1984 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1985 | attr.nexthop = vpn->originator_ip; | |
1986 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1987 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1988 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
1989 | ||
1990 | if (evpn_route_is_sticky(bgp, rn)) | |
1991 | attr.sticky = 1; | |
1992 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
1993 | attr.default_gw = 1; | |
1994 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1995 | attr.router_flag = 1; | |
1996 | } | |
1997 | ||
1998 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1999 | * using L3 VNI for type-2 routes also. | |
2000 | */ | |
2001 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2002 | !IN6_IS_ADDR_LINKLOCAL( |
2003 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2004 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2005 | bgpevpn_get_l3vni(vpn)) | |
2006 | add_l3_ecomm = 1; | |
2007 | ||
2008 | /* Set up extended community. */ | |
2009 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2010 | ||
40381db7 | 2011 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2012 | |
2013 | /* Update the route entry. */ | |
40381db7 DS |
2014 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2015 | 0, seq); | |
f07e1c99 | 2016 | |
d62a17ae | 2017 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2018 | * correctly as local route in the VNI always wins. |
d62a17ae | 2019 | */ |
2020 | evpn_route_select_install(bgp, vpn, rn); | |
2021 | ||
40381db7 | 2022 | attr_new = pi->attr; |
d62a17ae | 2023 | |
2024 | /* Update route in global routing table. */ | |
2025 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2026 | (struct prefix *)evp, &vpn->prd); | |
2027 | assert(rd_rn); | |
2028 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2029 | &global_pi, 0, |
f07e1c99 | 2030 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2031 | |
2032 | /* Schedule for processing and unlock node. */ | |
2033 | bgp_process(bgp, rd_rn, afi, safi); | |
2034 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2035 | |
f07e1c99 | 2036 | /* Unintern temporary. */ |
2037 | aspath_unintern(&attr.aspath); | |
2038 | ||
2039 | } | |
d62a17ae | 2040 | |
2041 | return 0; | |
128ea8ab | 2042 | } |
2043 | ||
2044 | /* | |
2045 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2046 | * global routing table. These are also scheduled for withdraw from peers. | |
2047 | */ | |
d62a17ae | 2048 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2049 | { |
d62a17ae | 2050 | afi_t afi; |
2051 | safi_t safi; | |
2052 | struct bgp_node *rdrn, *rn; | |
2053 | struct bgp_table *table; | |
40381db7 | 2054 | struct bgp_path_info *pi; |
128ea8ab | 2055 | |
d62a17ae | 2056 | afi = AFI_L2VPN; |
2057 | safi = SAFI_EVPN; | |
128ea8ab | 2058 | |
d62a17ae | 2059 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2060 | if (rdrn && rdrn->info) { | |
2061 | table = (struct bgp_table *)rdrn->info; | |
2062 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2063 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2064 | |
d62a17ae | 2065 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2066 | continue; | |
128ea8ab | 2067 | |
40381db7 DS |
2068 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2069 | if (pi) | |
d62a17ae | 2070 | bgp_process(bgp, rn, afi, safi); |
2071 | } | |
2072 | } | |
128ea8ab | 2073 | |
d62a17ae | 2074 | /* Unlock RD node. */ |
2075 | if (rdrn) | |
2076 | bgp_unlock_node(rdrn); | |
128ea8ab | 2077 | |
d62a17ae | 2078 | return 0; |
128ea8ab | 2079 | } |
2080 | ||
2081 | /* | |
2082 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2083 | * table as well as the per-VNI route table. | |
2084 | */ | |
d62a17ae | 2085 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2086 | { |
d62a17ae | 2087 | afi_t afi; |
2088 | safi_t safi; | |
2089 | struct bgp_node *rn; | |
40381db7 | 2090 | struct bgp_path_info *pi; |
128ea8ab | 2091 | |
d62a17ae | 2092 | afi = AFI_L2VPN; |
2093 | safi = SAFI_EVPN; | |
128ea8ab | 2094 | |
d62a17ae | 2095 | /* First, walk the global route table for this VNI's type-2 local |
2096 | * routes. | |
2097 | * EVPN routes are a 2-level table, first get the RD table. | |
2098 | */ | |
2099 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2100 | |
d62a17ae | 2101 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2102 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2103 | rn = bgp_route_next(rn)) { | |
2104 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2105 | |
d62a17ae | 2106 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2107 | continue; | |
128ea8ab | 2108 | |
40381db7 | 2109 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2110 | |
d62a17ae | 2111 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2112 | if (pi) |
2113 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2114 | } |
128ea8ab | 2115 | |
d62a17ae | 2116 | return 0; |
128ea8ab | 2117 | } |
2118 | ||
50f74cf1 | 2119 | /* |
2120 | * Delete all routes in per ES route-table | |
2121 | */ | |
2122 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2123 | { | |
2124 | struct bgp_node *rn; | |
40381db7 | 2125 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2126 | |
2127 | /* Walk this ES's route table and delete all routes. */ | |
2128 | for (rn = bgp_table_top(es->route_table); rn; | |
2129 | rn = bgp_route_next(rn)) { | |
40381db7 DS |
2130 | for (pi = rn->info; (pi != NULL) && (nextpi = pi->next, 1); |
2131 | pi = nextpi) { | |
2132 | bgp_path_info_delete(rn, pi); | |
2133 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2134 | } |
2135 | } | |
2136 | ||
2137 | return 0; | |
2138 | } | |
2139 | ||
128ea8ab | 2140 | /* |
2141 | * Delete all routes in the per-VNI route table. | |
2142 | */ | |
d62a17ae | 2143 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2144 | { |
d62a17ae | 2145 | struct bgp_node *rn; |
40381db7 | 2146 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2147 | |
d62a17ae | 2148 | /* Walk this VNI's route table and delete all routes. */ |
2149 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2150 | rn = bgp_route_next(rn)) { | |
40381db7 DS |
2151 | for (pi = rn->info; (pi != NULL) && (nextpi = pi->next, 1); |
2152 | pi = nextpi) { | |
2153 | bgp_path_info_delete(rn, pi); | |
2154 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2155 | } |
2156 | } | |
128ea8ab | 2157 | |
d62a17ae | 2158 | return 0; |
128ea8ab | 2159 | } |
2160 | ||
2161 | /* | |
2162 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2163 | * export RT getting modified or change to tunnel IP. Note that these | |
2164 | * situations need the route in the per-VNI table as well as the global | |
2165 | * table to be updated (as attributes change). | |
2166 | */ | |
d62a17ae | 2167 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2168 | { |
d62a17ae | 2169 | int ret; |
2170 | struct prefix_evpn p; | |
128ea8ab | 2171 | |
d62a17ae | 2172 | /* Update and advertise the type-3 route (only one) followed by the |
2173 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2174 | * |
2175 | * RT-3 only if doing head-end replication | |
d62a17ae | 2176 | */ |
fd069644 DS |
2177 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
2178 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2179 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2180 | if (ret) | |
2181 | return ret; | |
2182 | } | |
128ea8ab | 2183 | |
d62a17ae | 2184 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2185 | } |
2186 | ||
50f74cf1 | 2187 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2188 | * Also remove all other routes from the per ES table. | |
2189 | * Invoked when ES is deleted. | |
2190 | */ | |
2191 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2192 | { | |
2193 | int ret; | |
2194 | char buf[ESI_STR_LEN]; | |
2195 | struct prefix_evpn p; | |
2196 | ||
2197 | /* Delete and withdraw locally learnt ES route */ | |
2198 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2199 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2200 | if (ret) { | |
e50f7cfd | 2201 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2202 | "%u failed to delete type-4 route for ESI %s", |
2203 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2204 | } |
2205 | ||
2206 | /* Delete all routes from per ES table */ | |
2207 | return delete_all_es_routes(bgp, es); | |
2208 | } | |
2209 | ||
128ea8ab | 2210 | /* |
2211 | * Delete (and withdraw) local routes for specified VNI from the global | |
2212 | * table and per-VNI table. After this, remove all other routes from | |
2213 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2214 | * (advertise-all-vni) being disabled. | |
2215 | */ | |
d62a17ae | 2216 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2217 | { |
d62a17ae | 2218 | int ret; |
2219 | struct prefix_evpn p; | |
128ea8ab | 2220 | |
d62a17ae | 2221 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2222 | * followed by type-3 routes (only one) - for this VNI. | |
2223 | */ | |
2224 | ret = delete_all_type2_routes(bgp, vpn); | |
2225 | if (ret) | |
2226 | return ret; | |
128ea8ab | 2227 | |
d62a17ae | 2228 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2229 | ret = delete_evpn_route(bgp, vpn, &p); | |
2230 | if (ret) | |
2231 | return ret; | |
128ea8ab | 2232 | |
d62a17ae | 2233 | /* Delete all routes from the per-VNI table. */ |
2234 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2235 | } |
2236 | ||
2237 | /* | |
d1911c26 | 2238 | * There is a tunnel endpoint IP address change for this VNI, delete |
2239 | * prior type-3 route (if needed) and update. | |
2240 | * Note: Route re-advertisement happens elsewhere after other processing | |
2241 | * other changes. | |
128ea8ab | 2242 | */ |
d62a17ae | 2243 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2244 | struct in_addr originator_ip) | |
128ea8ab | 2245 | { |
d62a17ae | 2246 | struct prefix_evpn p; |
128ea8ab | 2247 | |
ddd16ed5 MK |
2248 | /* If VNI is not live, we only need to update the originator ip */ |
2249 | if (!is_vni_live(vpn)) { | |
2250 | vpn->originator_ip = originator_ip; | |
2251 | return 0; | |
2252 | } | |
2253 | ||
db0e1937 MK |
2254 | /* Update the tunnel-ip hash */ |
2255 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2256 | bgp_tip_add(bgp, &originator_ip); | |
2257 | ||
2258 | /* filter routes as martian nexthop db has changed */ | |
2259 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2260 | ||
d62a17ae | 2261 | /* Need to withdraw type-3 route as the originator IP is part |
2262 | * of the key. | |
2263 | */ | |
2264 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2265 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2266 | |
d62a17ae | 2267 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2268 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2269 | return 0; |
128ea8ab | 2270 | } |
2271 | ||
50f74cf1 | 2272 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2273 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2274 | struct prefix_evpn *p, |
40381db7 | 2275 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2276 | { |
2277 | int ret = 0; | |
2278 | struct bgp_node *rn = NULL; | |
40381db7 | 2279 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2280 | struct attr *attr_new = NULL; |
2281 | ||
2282 | /* Create (or fetch) route within the VNI. | |
2283 | * NOTE: There is no RD here. | |
2284 | */ | |
2285 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2286 | ||
2287 | /* Check if route entry is already present. */ | |
40381db7 DS |
2288 | for (pi = rn->info; pi; pi = pi->next) |
2289 | if (pi->extra | |
2290 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2291 | break; |
2292 | ||
40381db7 | 2293 | if (!pi) { |
50f74cf1 | 2294 | /* Add (or update) attribute to hash. */ |
40381db7 | 2295 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2296 | |
2297 | /* Create new route with its attribute. */ | |
40381db7 DS |
2298 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2299 | parent_pi->peer, attr_new, rn); | |
2300 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2301 | bgp_path_info_extra_get(pi); | |
2302 | pi->extra->parent = parent_pi; | |
2303 | bgp_path_info_add(rn, pi); | |
50f74cf1 | 2304 | } else { |
40381db7 DS |
2305 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2306 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2307 | bgp_unlock_node(rn); |
2308 | return 0; | |
2309 | } | |
2310 | /* The attribute has changed. */ | |
2311 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2312 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2313 | |
2314 | /* Restore route, if needed. */ | |
40381db7 DS |
2315 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2316 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2317 | |
2318 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2319 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2320 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2321 | |
2322 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2323 | bgp_attr_unintern(&pi->attr); |
2324 | pi->attr = attr_new; | |
2325 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2326 | } |
2327 | ||
2328 | /* Perform route selection and update zebra, if required. */ | |
2329 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2330 | return ret; | |
2331 | } | |
2332 | ||
d3135ba3 | 2333 | /* |
2334 | * Install route entry into the VRF routing table and invoke route selection. | |
2335 | */ | |
2336 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2337 | struct prefix_evpn *evp, | |
40381db7 | 2338 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2339 | { |
2340 | struct bgp_node *rn; | |
40381db7 | 2341 | struct bgp_path_info *pi; |
1ec31309 | 2342 | struct attr attr; |
d3135ba3 | 2343 | struct attr *attr_new; |
c4edf708 | 2344 | int ret = 0; |
d3135ba3 | 2345 | struct prefix p; |
2346 | struct prefix *pp = &p; | |
2347 | afi_t afi = 0; | |
2348 | safi_t safi = 0; | |
1eb88002 MK |
2349 | char buf[PREFIX_STRLEN]; |
2350 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2351 | |
2352 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2353 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2354 | |
1eb88002 | 2355 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2356 | zlog_debug( |
2357 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2358 | prefix2str(evp, buf, sizeof(buf)), | |
2359 | prefix2str(pp, buf1, sizeof(buf)), | |
2360 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2361 | } |
2362 | ||
d3135ba3 | 2363 | /* Create (or fetch) route within the VRF. */ |
2364 | /* NOTE: There is no RD here. */ | |
3714a385 | 2365 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2366 | afi = AFI_IP; |
2367 | safi = SAFI_UNICAST; | |
2368 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2369 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2370 | afi = AFI_IP6; |
2371 | safi = SAFI_UNICAST; | |
2372 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2373 | } else | |
2374 | return 0; | |
2375 | ||
1ec31309 | 2376 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2377 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2378 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2379 | * address for the rest of the code to flow through. In the case of IPv4, | |
2380 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2381 | */ |
40381db7 | 2382 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2383 | if (afi == AFI_IP6) |
2384 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2385 | else |
2386 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2387 | |
d3135ba3 | 2388 | /* Check if route entry is already present. */ |
40381db7 DS |
2389 | for (pi = rn->info; pi; pi = pi->next) |
2390 | if (pi->extra | |
2391 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2392 | break; |
2393 | ||
40381db7 | 2394 | if (!pi) { |
d3135ba3 | 2395 | /* Add (or update) attribute to hash. */ |
1ec31309 | 2396 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2397 | |
2398 | /* Create new route with its attribute. */ | |
40381db7 DS |
2399 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2400 | parent_pi->peer, attr_new, rn); | |
2401 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2402 | bgp_path_info_extra_get(pi); | |
2403 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2404 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2405 | if (parent_pi->extra) { | |
2406 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2407 | sizeof(pi->extra->label)); | |
2408 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2409 | } |
40381db7 | 2410 | bgp_path_info_add(rn, pi); |
d3135ba3 | 2411 | } else { |
40381db7 DS |
2412 | if (attrhash_cmp(pi->attr, &attr) |
2413 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2414 | bgp_unlock_node(rn); |
2415 | return 0; | |
2416 | } | |
2417 | /* The attribute has changed. */ | |
2418 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2419 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2420 | |
2421 | /* Restore route, if needed. */ | |
40381db7 DS |
2422 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2423 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2424 | |
2425 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2426 | if ((afi == AFI_IP |
2427 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2428 | || (afi == AFI_IP6 | |
2429 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2430 | &attr_new->mp_nexthop_global))) | |
2431 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2432 | |
2433 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2434 | bgp_attr_unintern(&pi->attr); |
2435 | pi->attr = attr_new; | |
2436 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2437 | } |
2438 | ||
40381db7 | 2439 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2440 | |
d3135ba3 | 2441 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2442 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2443 | |
2444 | return ret; | |
2445 | } | |
2446 | ||
128ea8ab | 2447 | /* |
2448 | * Install route entry into the VNI routing table and invoke route selection. | |
2449 | */ | |
d62a17ae | 2450 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2451 | struct prefix_evpn *p, | |
40381db7 | 2452 | struct bgp_path_info *parent_pi) |
d62a17ae | 2453 | { |
2454 | struct bgp_node *rn; | |
40381db7 | 2455 | struct bgp_path_info *pi; |
d62a17ae | 2456 | struct attr *attr_new; |
2457 | int ret; | |
2458 | ||
2459 | /* Create (or fetch) route within the VNI. */ | |
2460 | /* NOTE: There is no RD here. */ | |
2461 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2462 | ||
2463 | /* Check if route entry is already present. */ | |
40381db7 DS |
2464 | for (pi = rn->info; pi; pi = pi->next) |
2465 | if (pi->extra | |
2466 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2467 | break; |
2468 | ||
40381db7 | 2469 | if (!pi) { |
d62a17ae | 2470 | /* Add (or update) attribute to hash. */ |
40381db7 | 2471 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2472 | |
2473 | /* Create new route with its attribute. */ | |
40381db7 DS |
2474 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2475 | parent_pi->peer, attr_new, rn); | |
2476 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2477 | bgp_path_info_extra_get(pi); | |
2478 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2479 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2480 | if (parent_pi->extra) { | |
2481 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2482 | sizeof(pi->extra->label)); | |
2483 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2484 | } |
40381db7 | 2485 | bgp_path_info_add(rn, pi); |
d62a17ae | 2486 | } else { |
40381db7 DS |
2487 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2488 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2489 | bgp_unlock_node(rn); |
2490 | return 0; | |
2491 | } | |
2492 | /* The attribute has changed. */ | |
2493 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2494 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2495 | |
50f74cf1 | 2496 | /* Restore route, if needed. */ |
40381db7 DS |
2497 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2498 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2499 | |
2500 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2501 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2502 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2503 | |
2504 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2505 | bgp_attr_unintern(&pi->attr); |
2506 | pi->attr = attr_new; | |
2507 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2508 | } |
2509 | ||
2510 | /* Perform route selection and update zebra, if required. */ | |
2511 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2512 | ||
2513 | return ret; | |
2514 | } | |
2515 | ||
2516 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2517 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2518 | struct prefix_evpn *p, |
40381db7 | 2519 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2520 | { |
2521 | int ret; | |
2522 | struct bgp_node *rn; | |
40381db7 | 2523 | struct bgp_path_info *pi; |
50f74cf1 | 2524 | |
2525 | if (!es->route_table) | |
2526 | return 0; | |
2527 | ||
2528 | /* Locate route within the ESI. | |
2529 | * NOTE: There is no RD here. | |
2530 | */ | |
2531 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2532 | if (!rn) | |
2533 | return 0; | |
2534 | ||
2535 | /* Find matching route entry. */ | |
40381db7 DS |
2536 | for (pi = rn->info; pi; pi = pi->next) |
2537 | if (pi->extra | |
2538 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2539 | break; |
d62a17ae | 2540 | |
40381db7 | 2541 | if (!pi) |
50f74cf1 | 2542 | return 0; |
d62a17ae | 2543 | |
50f74cf1 | 2544 | /* Mark entry for deletion */ |
40381db7 | 2545 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2546 | |
2547 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2548 | ret = evpn_es_route_select_install(bgp, es, rn); |
2549 | ||
2550 | /* Unlock route node. */ | |
2551 | bgp_unlock_node(rn); | |
d62a17ae | 2552 | |
2553 | return ret; | |
128ea8ab | 2554 | } |
2555 | ||
d3135ba3 | 2556 | /* |
2557 | * Uninstall route entry from the VRF routing table and send message | |
2558 | * to zebra, if appropriate. | |
2559 | */ | |
2560 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2561 | struct prefix_evpn *evp, | |
40381db7 | 2562 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2563 | { |
2564 | struct bgp_node *rn; | |
40381db7 | 2565 | struct bgp_path_info *pi; |
c4edf708 | 2566 | int ret = 0; |
d3135ba3 | 2567 | struct prefix p; |
2568 | struct prefix *pp = &p; | |
2569 | afi_t afi = 0; | |
2570 | safi_t safi = 0; | |
1eb88002 MK |
2571 | char buf[PREFIX_STRLEN]; |
2572 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2573 | |
2574 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2575 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2576 | |
1eb88002 | 2577 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2578 | zlog_debug( |
2579 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2580 | prefix2str(evp, buf, sizeof(buf)), | |
2581 | prefix2str(pp, buf1, sizeof(buf)), | |
2582 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2583 | } |
2584 | ||
d3135ba3 | 2585 | /* Locate route within the VRF. */ |
2586 | /* NOTE: There is no RD here. */ | |
3714a385 | 2587 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2588 | afi = AFI_IP; |
2589 | safi = SAFI_UNICAST; | |
2590 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2591 | } else { | |
2592 | afi = AFI_IP6; | |
2593 | safi = SAFI_UNICAST; | |
2594 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2595 | } | |
2596 | ||
2597 | if (!rn) | |
2598 | return 0; | |
2599 | ||
2600 | /* Find matching route entry. */ | |
40381db7 DS |
2601 | for (pi = rn->info; pi; pi = pi->next) |
2602 | if (pi->extra | |
2603 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2604 | break; |
2605 | ||
40381db7 | 2606 | if (!pi) |
d3135ba3 | 2607 | return 0; |
2608 | ||
40381db7 | 2609 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2610 | |
d3135ba3 | 2611 | /* Mark entry for deletion */ |
40381db7 | 2612 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2613 | |
2614 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2615 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2616 | |
2617 | /* Unlock route node. */ | |
2618 | bgp_unlock_node(rn); | |
2619 | ||
2620 | return ret; | |
2621 | } | |
2622 | ||
128ea8ab | 2623 | /* |
2624 | * Uninstall route entry from the VNI routing table and send message | |
2625 | * to zebra, if appropriate. | |
2626 | */ | |
d62a17ae | 2627 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2628 | struct prefix_evpn *p, | |
40381db7 | 2629 | struct bgp_path_info *parent_pi) |
128ea8ab | 2630 | { |
d62a17ae | 2631 | struct bgp_node *rn; |
40381db7 | 2632 | struct bgp_path_info *pi; |
d62a17ae | 2633 | int ret; |
128ea8ab | 2634 | |
d62a17ae | 2635 | /* Locate route within the VNI. */ |
2636 | /* NOTE: There is no RD here. */ | |
2637 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2638 | if (!rn) | |
2639 | return 0; | |
128ea8ab | 2640 | |
d62a17ae | 2641 | /* Find matching route entry. */ |
40381db7 DS |
2642 | for (pi = rn->info; pi; pi = pi->next) |
2643 | if (pi->extra | |
2644 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2645 | break; |
128ea8ab | 2646 | |
40381db7 | 2647 | if (!pi) |
d62a17ae | 2648 | return 0; |
128ea8ab | 2649 | |
d62a17ae | 2650 | /* Mark entry for deletion */ |
40381db7 | 2651 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2652 | |
d62a17ae | 2653 | /* Perform route selection and update zebra, if required. */ |
2654 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2655 | |
d62a17ae | 2656 | /* Unlock route node. */ |
2657 | bgp_unlock_node(rn); | |
128ea8ab | 2658 | |
d62a17ae | 2659 | return ret; |
128ea8ab | 2660 | } |
2661 | ||
50f74cf1 | 2662 | /* |
2663 | * Given a prefix, see if it belongs to ES. | |
2664 | */ | |
2665 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2666 | struct evpnes *es) | |
2667 | { | |
2668 | /* if not an ES route return false */ | |
2669 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2670 | return 0; | |
2671 | ||
2672 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2673 | return 1; | |
2674 | ||
2675 | return 0; | |
2676 | } | |
2677 | ||
5ba238b7 MK |
2678 | /* |
2679 | * Given a route entry and a VRF, see if this route entry should be | |
2680 | * imported into the VRF i.e., RTs match. | |
2681 | */ | |
4b7e6066 | 2682 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2683 | struct bgp_path_info *pi) |
5ba238b7 | 2684 | { |
40381db7 | 2685 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2686 | struct ecommunity *ecom; |
2687 | int i; | |
2688 | ||
2689 | assert(attr); | |
2690 | /* Route should have valid RT to be even considered. */ | |
2691 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2692 | return 0; | |
2693 | ||
2694 | ecom = attr->ecommunity; | |
2695 | if (!ecom || !ecom->size) | |
2696 | return 0; | |
2697 | ||
2698 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2699 | * matches, we're done. | |
2700 | */ | |
2701 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2702 | uint8_t *pnt; |
2703 | uint8_t type, sub_type; | |
5ba238b7 MK |
2704 | struct ecommunity_val *eval; |
2705 | struct ecommunity_val eval_tmp; | |
2706 | struct vrf_irt_node *irt; | |
2707 | ||
2708 | /* Only deal with RTs */ | |
2709 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2710 | eval = (struct ecommunity_val *)(ecom->val | |
2711 | + (i * ECOMMUNITY_SIZE)); | |
2712 | type = *pnt++; | |
2713 | sub_type = *pnt++; | |
2714 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2715 | continue; | |
2716 | ||
2717 | /* See if this RT matches specified VNIs import RTs */ | |
2718 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2719 | if (irt) |
5ba238b7 MK |
2720 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2721 | return 1; | |
2722 | ||
2723 | /* Also check for non-exact match. In this, we mask out the AS | |
2724 | * and | |
2725 | * only check on the local-admin sub-field. This is to | |
2726 | * facilitate using | |
2727 | * VNI as the RT for EBGP peering too. | |
2728 | */ | |
2729 | irt = NULL; | |
2730 | if (type == ECOMMUNITY_ENCODE_AS | |
2731 | || type == ECOMMUNITY_ENCODE_AS4 | |
2732 | || type == ECOMMUNITY_ENCODE_IP) { | |
2733 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2734 | mask_ecom_global_admin(&eval_tmp, eval); | |
2735 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2736 | } | |
5d9cbca2 | 2737 | if (irt) |
5ba238b7 MK |
2738 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2739 | return 1; | |
2740 | } | |
2741 | ||
2742 | return 0; | |
2743 | } | |
2744 | ||
128ea8ab | 2745 | /* |
2746 | * Given a route entry and a VNI, see if this route entry should be | |
2747 | * imported into the VNI i.e., RTs match. | |
2748 | */ | |
d62a17ae | 2749 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2750 | struct bgp_path_info *pi) |
d62a17ae | 2751 | { |
40381db7 | 2752 | struct attr *attr = pi->attr; |
d62a17ae | 2753 | struct ecommunity *ecom; |
2754 | int i; | |
2755 | ||
2756 | assert(attr); | |
2757 | /* Route should have valid RT to be even considered. */ | |
2758 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2759 | return 0; | |
2760 | ||
2761 | ecom = attr->ecommunity; | |
2762 | if (!ecom || !ecom->size) | |
2763 | return 0; | |
2764 | ||
2765 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2766 | * matches, we're done. | |
2767 | */ | |
2768 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2769 | uint8_t *pnt; |
2770 | uint8_t type, sub_type; | |
d62a17ae | 2771 | struct ecommunity_val *eval; |
2772 | struct ecommunity_val eval_tmp; | |
2773 | struct irt_node *irt; | |
2774 | ||
2775 | /* Only deal with RTs */ | |
2776 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2777 | eval = (struct ecommunity_val *)(ecom->val | |
2778 | + (i * ECOMMUNITY_SIZE)); | |
2779 | type = *pnt++; | |
2780 | sub_type = *pnt++; | |
2781 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2782 | continue; | |
2783 | ||
2784 | /* See if this RT matches specified VNIs import RTs */ | |
2785 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2786 | if (irt) |
d62a17ae | 2787 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2788 | return 1; | |
2789 | ||
2790 | /* Also check for non-exact match. In this, we mask out the AS | |
2791 | * and | |
2792 | * only check on the local-admin sub-field. This is to | |
2793 | * facilitate using | |
2794 | * VNI as the RT for EBGP peering too. | |
2795 | */ | |
2796 | irt = NULL; | |
2797 | if (type == ECOMMUNITY_ENCODE_AS | |
2798 | || type == ECOMMUNITY_ENCODE_AS4 | |
2799 | || type == ECOMMUNITY_ENCODE_IP) { | |
2800 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2801 | mask_ecom_global_admin(&eval_tmp, eval); | |
2802 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2803 | } | |
b1ab0dfe | 2804 | if (irt) |
d62a17ae | 2805 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2806 | return 1; | |
2807 | } | |
2808 | ||
2809 | return 0; | |
128ea8ab | 2810 | } |
2811 | ||
50f74cf1 | 2812 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2813 | struct evpnes *es, | |
2814 | int install) | |
2815 | { | |
2816 | int ret; | |
2817 | afi_t afi; | |
2818 | safi_t safi; | |
2819 | char buf[PREFIX_STRLEN]; | |
2820 | char buf1[ESI_STR_LEN]; | |
2821 | struct bgp_node *rd_rn, *rn; | |
2822 | struct bgp_table *table; | |
40381db7 | 2823 | struct bgp_path_info *pi; |
50f74cf1 | 2824 | |
2825 | afi = AFI_L2VPN; | |
2826 | safi = SAFI_EVPN; | |
2827 | ||
2bb9eff4 DS |
2828 | /* |
2829 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2830 | * imported into this VRF. Note that we need to loop through all global |
2831 | * routes to determine which route matches the import rt on vrf | |
2832 | */ | |
2833 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2834 | rd_rn = bgp_route_next(rd_rn)) { | |
2835 | table = (struct bgp_table *)(rd_rn->info); | |
2836 | if (!table) | |
2837 | continue; | |
2838 | ||
2839 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2840 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2841 | ||
40381db7 | 2842 | for (pi = rn->info; pi; pi = pi->next) { |
2bb9eff4 DS |
2843 | /* |
2844 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2845 | * this ES. |
2846 | */ | |
40381db7 DS |
2847 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2848 | && pi->type == ZEBRA_ROUTE_BGP | |
2849 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2850 | continue; |
2851 | ||
2bb9eff4 DS |
2852 | if (!is_prefix_matching_for_es(evp, es)) |
2853 | continue; | |
50f74cf1 | 2854 | |
2bb9eff4 DS |
2855 | if (install) |
2856 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2857 | bgp, es, evp, pi); |
2bb9eff4 DS |
2858 | else |
2859 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2860 | bgp, es, evp, pi); |
2bb9eff4 DS |
2861 | |
2862 | if (ret) { | |
af4c2728 | 2863 | flog_err( |
e50f7cfd | 2864 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2865 | "Failed to %s EVPN %s route in ESI %s", |
2866 | install ? "install" | |
2867 | : "uninstall", | |
2868 | prefix2str(evp, buf, | |
2869 | sizeof(buf)), | |
2870 | esi_to_str(&es->esi, buf1, | |
2871 | sizeof(buf1))); | |
2872 | return ret; | |
50f74cf1 | 2873 | } |
2874 | } | |
2875 | } | |
2876 | } | |
2877 | return 0; | |
2878 | } | |
2879 | ||
5ba238b7 MK |
2880 | /* |
2881 | * Install or uninstall mac-ip routes are appropriate for this | |
2882 | * particular VRF. | |
2883 | */ | |
996c9314 | 2884 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2885 | { |
2886 | afi_t afi; | |
2887 | safi_t safi; | |
2888 | struct bgp_node *rd_rn, *rn; | |
2889 | struct bgp_table *table; | |
40381db7 | 2890 | struct bgp_path_info *pi; |
5ba238b7 MK |
2891 | int ret; |
2892 | char buf[PREFIX_STRLEN]; | |
2893 | struct bgp *bgp_def = NULL; | |
2894 | ||
2895 | afi = AFI_L2VPN; | |
2896 | safi = SAFI_EVPN; | |
2897 | bgp_def = bgp_get_default(); | |
2898 | if (!bgp_def) | |
2899 | return -1; | |
2900 | ||
2901 | /* Walk entire global routing table and evaluate routes which could be | |
2902 | * imported into this VRF. Note that we need to loop through all global | |
2903 | * routes to determine which route matches the import rt on vrf | |
2904 | */ | |
2905 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2906 | rd_rn = bgp_route_next(rd_rn)) { | |
2907 | table = (struct bgp_table *)(rd_rn->info); | |
2908 | if (!table) | |
2909 | continue; | |
2910 | ||
2911 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2912 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2913 | ||
1eb88002 | 2914 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2915 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2916 | || evp->prefix.route_type | |
2917 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2918 | continue; |
2919 | ||
1eb88002 | 2920 | /* if not a mac+ip route skip this route */ |
3714a385 | 2921 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2922 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2923 | continue; |
2924 | ||
40381db7 | 2925 | for (pi = rn->info; pi; pi = pi->next) { |
5ba238b7 | 2926 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2927 | * this VRF. |
2928 | */ | |
40381db7 DS |
2929 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2930 | && pi->type == ZEBRA_ROUTE_BGP | |
2931 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2932 | continue; |
2933 | ||
40381db7 | 2934 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
5ba238b7 | 2935 | if (install) |
996c9314 | 2936 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2937 | bgp_vrf, evp, pi); |
5ba238b7 | 2938 | else |
996c9314 | 2939 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2940 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2941 | |
2942 | if (ret) { | |
af4c2728 | 2943 | flog_err( |
e50f7cfd | 2944 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2945 | "Failed to %s EVPN %s route in VRF %s", |
2946 | install ? "install" | |
2947 | : "uninstall", | |
2948 | prefix2str(evp, buf, | |
2949 | sizeof(buf)), | |
996c9314 LB |
2950 | vrf_id_to_name( |
2951 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2952 | return ret; |
2953 | } | |
2954 | } | |
2955 | } | |
2956 | } | |
2957 | } | |
2958 | ||
2959 | return 0; | |
2960 | } | |
2961 | ||
128ea8ab | 2962 | /* |
2963 | * Install or uninstall routes of specified type that are appropriate for this | |
2964 | * particular VNI. | |
2965 | */ | |
d62a17ae | 2966 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2967 | struct bgpevpn *vpn, | |
2968 | bgp_evpn_route_type rtype, | |
2969 | int install) | |
2970 | { | |
0291c246 MK |
2971 | afi_t afi; |
2972 | safi_t safi; | |
2973 | struct bgp_node *rd_rn, *rn; | |
2974 | struct bgp_table *table; | |
40381db7 | 2975 | struct bgp_path_info *pi; |
0291c246 | 2976 | int ret; |
d62a17ae | 2977 | |
2978 | afi = AFI_L2VPN; | |
2979 | safi = SAFI_EVPN; | |
2980 | ||
2981 | /* Walk entire global routing table and evaluate routes which could be | |
2982 | * imported into this VPN. Note that we cannot just look at the routes | |
2983 | * for | |
2984 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2985 | * RD. | |
2986 | */ | |
2987 | /* EVPN routes are a 2-level table. */ | |
2988 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2989 | rd_rn = bgp_route_next(rd_rn)) { | |
2990 | table = (struct bgp_table *)(rd_rn->info); | |
2991 | if (!table) | |
2992 | continue; | |
2993 | ||
2994 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2995 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2996 | ||
2997 | if (evp->prefix.route_type != rtype) | |
2998 | continue; | |
2999 | ||
40381db7 | 3000 | for (pi = rn->info; pi; pi = pi->next) { |
d62a17ae | 3001 | /* Consider "valid" remote routes applicable for |
3002 | * this VNI. */ | |
40381db7 DS |
3003 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3004 | && pi->type == ZEBRA_ROUTE_BGP | |
3005 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3006 | continue; |
3007 | ||
40381db7 | 3008 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3009 | if (install) |
3010 | ret = install_evpn_route_entry( | |
40381db7 | 3011 | bgp, vpn, evp, pi); |
d62a17ae | 3012 | else |
3013 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3014 | bgp, vpn, evp, pi); |
d62a17ae | 3015 | |
3016 | if (ret) { | |
af4c2728 | 3017 | flog_err( |
e50f7cfd | 3018 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3019 | "%u: Failed to %s EVPN %s route in VNI %u", |
3020 | bgp->vrf_id, | |
3021 | install ? "install" | |
3022 | : "uninstall", | |
3023 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3024 | ? "MACIP" | |
3025 | : "IMET", | |
3026 | vpn->vni); | |
3027 | return ret; | |
3028 | } | |
3029 | } | |
3030 | } | |
3031 | } | |
3032 | } | |
3033 | ||
3034 | return 0; | |
128ea8ab | 3035 | } |
3036 | ||
50f74cf1 | 3037 | /* Install any existing remote ES routes applicable for this ES into its routing |
3038 | * table. This is invoked when ES comes up. | |
3039 | */ | |
3040 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3041 | { | |
3042 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3043 | } | |
3044 | ||
3045 | ||
5ba238b7 | 3046 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3047 | * is invoked upon l3vni-add or l3vni import rt change |
3048 | */ | |
5ba238b7 MK |
3049 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3050 | { | |
3051 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3052 | return 0; | |
3053 | } | |
3054 | ||
128ea8ab | 3055 | /* |
3056 | * Install any existing remote routes applicable for this VNI into its | |
3057 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3058 | * RT is changed. | |
3059 | */ | |
d62a17ae | 3060 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3061 | { |
d62a17ae | 3062 | int ret; |
128ea8ab | 3063 | |
d62a17ae | 3064 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3065 | * for this VNI. | |
3066 | */ | |
3067 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3068 | 1); | |
3069 | if (ret) | |
3070 | return ret; | |
128ea8ab | 3071 | |
d62a17ae | 3072 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3073 | 1); | |
128ea8ab | 3074 | } |
3075 | ||
5ba238b7 MK |
3076 | /* uninstall routes from l3vni vrf. */ |
3077 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3078 | { | |
3079 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3080 | return 0; | |
3081 | } | |
3082 | ||
90e60aa7 | 3083 | /* |
3084 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3085 | * this is invoked is upon an import RT change. | |
3086 | */ | |
d62a17ae | 3087 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3088 | { |
d62a17ae | 3089 | int ret; |
90e60aa7 | 3090 | |
d62a17ae | 3091 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3092 | * applicable | |
3093 | * for this VNI. | |
3094 | */ | |
3095 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3096 | 0); | |
3097 | if (ret) | |
3098 | return ret; | |
90e60aa7 | 3099 | |
d62a17ae | 3100 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3101 | 0); | |
90e60aa7 | 3102 | } |
3103 | ||
50f74cf1 | 3104 | /* Install or unistall route in ES */ |
3105 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3106 | afi_t afi, safi_t safi, | |
3107 | struct prefix_evpn *evp, | |
40381db7 | 3108 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3109 | { |
3110 | int ret = 0; | |
3111 | char buf[ESI_STR_LEN]; | |
3112 | ||
3113 | if (install) | |
40381db7 | 3114 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3115 | else |
40381db7 | 3116 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3117 | |
3118 | if (ret) { | |
af4c2728 | 3119 | flog_err( |
e50f7cfd | 3120 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3121 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3122 | install ? "install" : "uninstall", "ES", | |
3123 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3124 | return ret; |
3125 | } | |
3126 | return 0; | |
3127 | } | |
3128 | ||
d3135ba3 | 3129 | /* |
3130 | * Install or uninstall route in matching VRFs (list). | |
3131 | */ | |
3132 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3133 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3134 | struct bgp_path_info *pi, |
d3135ba3 | 3135 | struct list *vrfs, int install) |
3136 | { | |
3137 | char buf[PREFIX2STR_BUFFER]; | |
3138 | struct bgp *bgp_vrf; | |
3139 | struct listnode *node, *nnode; | |
3140 | ||
90264d64 | 3141 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3142 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3143 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3144 | return 0; |
3145 | ||
90264d64 | 3146 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3147 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3148 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3149 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3150 | return 0; |
3151 | ||
d3135ba3 | 3152 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3153 | int ret; | |
3154 | ||
3155 | if (install) | |
40381db7 | 3156 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3157 | else |
996c9314 | 3158 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3159 | pi); |
d3135ba3 | 3160 | |
3161 | if (ret) { | |
e50f7cfd | 3162 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3163 | "%u: Failed to %s prefix %s in VRF %s", |
3164 | bgp_def->vrf_id, | |
3165 | install ? "install" : "uninstall", | |
3166 | prefix2str(evp, buf, sizeof(buf)), | |
3167 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3168 | return ret; |
3169 | } | |
3170 | } | |
3171 | ||
3172 | return 0; | |
3173 | } | |
3174 | ||
128ea8ab | 3175 | /* |
3176 | * Install or uninstall route in matching VNIs (list). | |
3177 | */ | |
d62a17ae | 3178 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3179 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3180 | struct bgp_path_info *pi, |
d62a17ae | 3181 | struct list *vnis, int install) |
128ea8ab | 3182 | { |
d62a17ae | 3183 | struct bgpevpn *vpn; |
3184 | struct listnode *node, *nnode; | |
128ea8ab | 3185 | |
d62a17ae | 3186 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3187 | int ret; | |
128ea8ab | 3188 | |
d62a17ae | 3189 | if (!is_vni_live(vpn)) |
3190 | continue; | |
128ea8ab | 3191 | |
d62a17ae | 3192 | if (install) |
40381db7 | 3193 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3194 | else |
40381db7 | 3195 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3196 | |
d62a17ae | 3197 | if (ret) { |
1c50c1c0 QY |
3198 | flog_err(EC_BGP_EVPN_FAIL, |
3199 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3200 | bgp->vrf_id, install ? "install" : "uninstall", | |
3201 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3202 | ? "MACIP" | |
3203 | : "IMET", | |
3204 | vpn->vni); | |
d62a17ae | 3205 | return ret; |
3206 | } | |
3207 | } | |
128ea8ab | 3208 | |
d62a17ae | 3209 | return 0; |
128ea8ab | 3210 | } |
3211 | ||
3212 | /* | |
50f74cf1 | 3213 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3214 | */ |
d62a17ae | 3215 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3216 | struct prefix *p, |
40381db7 | 3217 | struct bgp_path_info *pi, int import) |
d62a17ae | 3218 | { |
3219 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3220 | struct attr *attr = pi->attr; |
d62a17ae | 3221 | struct ecommunity *ecom; |
3222 | int i; | |
3223 | ||
3224 | assert(attr); | |
3225 | ||
50f74cf1 | 3226 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3227 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3228 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3229 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3230 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3231 | return 0; |
3232 | ||
3233 | /* If we don't have Route Target, nothing much to do. */ | |
3234 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3235 | return 0; | |
3236 | ||
3237 | ecom = attr->ecommunity; | |
3238 | if (!ecom || !ecom->size) | |
3239 | return -1; | |
3240 | ||
50f74cf1 | 3241 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3242 | * attached to the route */ | |
d62a17ae | 3243 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3244 | uint8_t *pnt; |
3245 | uint8_t type, sub_type; | |
d62a17ae | 3246 | struct ecommunity_val *eval; |
3247 | struct ecommunity_val eval_tmp; | |
996c9314 | 3248 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3249 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3250 | struct evpnes *es; |
d62a17ae | 3251 | |
3252 | /* Only deal with RTs */ | |
3253 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3254 | eval = (struct ecommunity_val *)(ecom->val | |
3255 | + (i * ECOMMUNITY_SIZE)); | |
3256 | type = *pnt++; | |
3257 | sub_type = *pnt++; | |
3258 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3259 | continue; | |
3260 | ||
50f74cf1 | 3261 | /* |
3262 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3263 | * IMET route is imported into VNI table. | |
3264 | * prefix routes are imported into VRF table. | |
523cafc4 | 3265 | */ |
50f74cf1 | 3266 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3267 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3268 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3269 | |
50f74cf1 | 3270 | irt = lookup_import_rt(bgp, eval); |
3271 | if (irt) | |
40381db7 DS |
3272 | install_uninstall_route_in_vnis( |
3273 | bgp, afi, safi, evp, pi, irt->vnis, | |
3274 | import); | |
50f74cf1 | 3275 | |
3276 | vrf_irt = lookup_vrf_import_rt(eval); | |
3277 | if (vrf_irt) | |
40381db7 DS |
3278 | install_uninstall_route_in_vrfs( |
3279 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3280 | import); | |
50f74cf1 | 3281 | |
3282 | /* Also check for non-exact match. | |
3283 | * In this, we mask out the AS and | |
3284 | * only check on the local-admin sub-field. | |
3285 | * This is to facilitate using | |
3286 | * VNI as the RT for EBGP peering too. | |
3287 | */ | |
3288 | irt = NULL; | |
3289 | vrf_irt = NULL; | |
3290 | if (type == ECOMMUNITY_ENCODE_AS | |
3291 | || type == ECOMMUNITY_ENCODE_AS4 | |
3292 | || type == ECOMMUNITY_ENCODE_IP) { | |
3293 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3294 | mask_ecom_global_admin(&eval_tmp, eval); | |
3295 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3296 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3297 | } | |
3298 | ||
3299 | if (irt) | |
40381db7 DS |
3300 | install_uninstall_route_in_vnis( |
3301 | bgp, afi, safi, evp, pi, irt->vnis, | |
3302 | import); | |
50f74cf1 | 3303 | if (vrf_irt) |
40381db7 DS |
3304 | install_uninstall_route_in_vrfs( |
3305 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3306 | import); | |
50f74cf1 | 3307 | } |
3308 | ||
3309 | /* es route is imported into the es table */ | |
3310 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3311 | ||
3312 | /* we will match based on the entire esi to avoid | |
3313 | * imoort of an es route for esi2 into esi1 | |
3314 | */ | |
3315 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3316 | if (es && is_es_local(es)) | |
40381db7 DS |
3317 | install_uninstall_route_in_es( |
3318 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3319 | } |
d62a17ae | 3320 | } |
3321 | ||
3322 | return 0; | |
128ea8ab | 3323 | } |
3324 | ||
2bb9eff4 DS |
3325 | /* |
3326 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3327 | * routes | |
3328 | */ | |
80b140af MK |
3329 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3330 | { | |
3331 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3332 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3333 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3334 | |
3335 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3336 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3337 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3338 | } |
3339 | ||
2bb9eff4 DS |
3340 | /* |
3341 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3342 | * routes | |
3343 | */ | |
80b140af MK |
3344 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3345 | { | |
3346 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3347 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3348 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3349 | |
3350 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3351 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3352 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3353 | } |
3354 | ||
676f83b9 | 3355 | /* |
3356 | * update and advertise local routes for a VRF as type-5 routes. | |
3357 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3358 | * done in the global route table using the routes which already exist in the | |
3359 | * VRF routing table | |
3360 | */ | |
80b140af | 3361 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3362 | { |
80b140af MK |
3363 | /* skip if the RD is configured */ |
3364 | if (is_vrf_rd_configured(bgp_vrf)) | |
3365 | return; | |
3366 | ||
3367 | /* derive the RD for the VRF based on new router-id */ | |
3368 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3369 | ||
3370 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3371 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3372 | } |
3373 | ||
3374 | /* | |
3375 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3376 | * This is invoked upon VRF RD change. The processing is done only from global | |
3377 | * table. | |
3378 | */ | |
80b140af | 3379 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3380 | { |
80b140af MK |
3381 | /* skip if the RD is configured */ |
3382 | if (is_vrf_rd_configured(bgp_vrf)) | |
3383 | return; | |
3384 | ||
3385 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3386 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3387 | } |
3388 | ||
90e60aa7 | 3389 | /* |
3390 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3391 | * change. Note that the processing is done only on the global route table | |
3392 | * using routes that already exist in the per-VNI table. | |
3393 | */ | |
d62a17ae | 3394 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3395 | { | |
3396 | struct prefix_evpn p; | |
3397 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3398 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3399 | struct attr *attr; |
3400 | afi_t afi = AFI_L2VPN; | |
3401 | safi_t safi = SAFI_EVPN; | |
3402 | ||
3403 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3404 | * attributes to create and advertise the type-3 route for this VNI | |
3405 | * in the global table. | |
fd069644 DS |
3406 | * |
3407 | * RT-3 only if doing head-end replication | |
d62a17ae | 3408 | */ |
fd069644 DS |
3409 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
3410 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3411 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3412 | if (!rn) /* unexpected */ | |
3413 | return 0; | |
3414 | for (pi = rn->info; pi; pi = pi->next) | |
3415 | if (pi->peer == bgp->peer_self && | |
3416 | pi->type == ZEBRA_ROUTE_BGP | |
3417 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3418 | break; | |
3419 | if (!pi) /* unexpected */ | |
3420 | return 0; | |
3421 | attr = pi->attr; | |
d62a17ae | 3422 | |
fd069644 DS |
3423 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3424 | (struct prefix *)&p, &vpn->prd); | |
3425 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3426 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3427 | |
fd069644 DS |
3428 | /* Schedule for processing and unlock node. */ |
3429 | bgp_process(bgp, global_rn, afi, safi); | |
3430 | bgp_unlock_node(global_rn); | |
3431 | } | |
d62a17ae | 3432 | |
3433 | /* Now, walk this VNI's route table and use the route and its attribute | |
3434 | * to create and schedule route in global table. | |
3435 | */ | |
3436 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3437 | rn = bgp_route_next(rn)) { | |
3438 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3439 | ||
3440 | /* Identify MAC-IP local routes. */ | |
3441 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3442 | continue; | |
3443 | ||
40381db7 DS |
3444 | for (pi = rn->info; pi; pi = pi->next) |
3445 | if (pi->peer == bgp->peer_self | |
3446 | && pi->type == ZEBRA_ROUTE_BGP | |
3447 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3448 | break; |
40381db7 | 3449 | if (!pi) |
d62a17ae | 3450 | continue; |
3451 | ||
3452 | /* Create route in global routing table using this route entry's | |
3453 | * attribute. | |
3454 | */ | |
40381db7 | 3455 | attr = pi->attr; |
d62a17ae | 3456 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3457 | (struct prefix *)evp, &vpn->prd); | |
3458 | assert(global_rn); | |
3459 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3460 | &global_pi, 0, |
f07e1c99 | 3461 | mac_mobility_seqnum(attr)); |
d62a17ae | 3462 | |
3463 | /* Schedule for processing and unlock node. */ | |
3464 | bgp_process(bgp, global_rn, afi, safi); | |
3465 | bgp_unlock_node(global_rn); | |
3466 | } | |
3467 | ||
3468 | return 0; | |
90e60aa7 | 3469 | } |
3470 | ||
3471 | /* | |
3472 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3473 | * table. Invoked upon router-id change. | |
3474 | */ | |
d62a17ae | 3475 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3476 | { |
d62a17ae | 3477 | int ret; |
3478 | struct prefix_evpn p; | |
3479 | struct bgp_node *global_rn; | |
40381db7 | 3480 | struct bgp_path_info *pi; |
d62a17ae | 3481 | afi_t afi = AFI_L2VPN; |
3482 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3483 | |
d62a17ae | 3484 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3485 | * for this VNI - from the global table. | |
3486 | */ | |
3487 | ret = delete_global_type2_routes(bgp, vpn); | |
3488 | if (ret) | |
3489 | return ret; | |
90e60aa7 | 3490 | |
d62a17ae | 3491 | /* Remove type-3 route for this VNI from global table. */ |
3492 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3493 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3494 | (struct prefix *)&p, &vpn->prd); | |
3495 | if (global_rn) { | |
3496 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3497 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3498 | |
d62a17ae | 3499 | /* Schedule for processing - withdraws to peers happen from |
3500 | * this table. | |
3501 | */ | |
40381db7 | 3502 | if (pi) |
d62a17ae | 3503 | bgp_process(bgp, global_rn, afi, safi); |
3504 | bgp_unlock_node(global_rn); | |
3505 | } | |
90e60aa7 | 3506 | |
d62a17ae | 3507 | return 0; |
90e60aa7 | 3508 | } |
3509 | ||
2d48ee25 | 3510 | /* |
3511 | * Handle router-id change. Update and advertise local routes corresponding | |
3512 | * to this VNI from peers. Note that this is invoked after updating the | |
3513 | * router-id. The routes in the per-VNI table are used to create routes in | |
3514 | * the global table and schedule them. | |
3515 | */ | |
d62a17ae | 3516 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3517 | { |
0a1a07cb | 3518 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3519 | |
d62a17ae | 3520 | /* Skip VNIs with configured RD. */ |
3521 | if (is_rd_configured(vpn)) | |
3522 | return; | |
2d48ee25 | 3523 | |
d62a17ae | 3524 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3525 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3526 | } |
3527 | ||
3528 | /* | |
3529 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3530 | * to this VNI from peers. Note that this is invoked prior to updating | |
3531 | * the router-id and is done only on the global route table, the routes | |
3532 | * are needed in the per-VNI table to re-advertise with new router id. | |
3533 | */ | |
d62a17ae | 3534 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3535 | { |
0a1a07cb | 3536 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3537 | |
d62a17ae | 3538 | /* Skip VNIs with configured RD. */ |
3539 | if (is_rd_configured(vpn)) | |
3540 | return; | |
2d48ee25 | 3541 | |
d62a17ae | 3542 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3543 | } |
3544 | ||
fd069644 DS |
3545 | /* |
3546 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3547 | * This is invoked upon flooding mode changing to head-end replication. | |
3548 | */ | |
3549 | static void create_advertise_type3(struct hash_backet *backet, void *data) | |
3550 | { | |
3551 | struct bgpevpn *vpn = backet->data; | |
3552 | struct bgp *bgp = data; | |
3553 | struct prefix_evpn p; | |
3554 | ||
3555 | if (!vpn || !is_vni_live(vpn)) | |
3556 | return; | |
3557 | ||
3558 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3559 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3560 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3561 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3562 | } | |
3563 | ||
3564 | /* | |
3565 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3566 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3567 | */ | |
3568 | static void delete_withdraw_type3(struct hash_backet *backet, void *data) | |
3569 | { | |
3570 | struct bgpevpn *vpn = backet->data; | |
3571 | struct bgp *bgp = data; | |
3572 | struct prefix_evpn p; | |
3573 | ||
3574 | if (!vpn || !is_vni_live(vpn)) | |
3575 | return; | |
3576 | ||
3577 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3578 | delete_evpn_route(bgp, vpn, &p); | |
3579 | } | |
3580 | ||
128ea8ab | 3581 | /* |
3582 | * Process received EVPN type-2 route (advertise or withdraw). | |
3583 | */ | |
d62a17ae | 3584 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3585 | struct attr *attr, uint8_t *pfx, int psize, |
3586 | uint32_t addpath_id) | |
d62a17ae | 3587 | { |
3588 | struct prefix_rd prd; | |
3589 | struct prefix_evpn p; | |
554cd77a | 3590 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3591 | uint8_t ipaddr_len; |
3592 | uint8_t macaddr_len; | |
b57ba6d2 | 3593 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3594 | uint32_t num_labels = 0; |
554cd77a | 3595 | uint32_t eth_tag; |
d62a17ae | 3596 | int ret; |
3597 | ||
3598 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3599 | * additional 3 bytes if there is a second label (VNI): | |
3600 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3601 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3602 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3603 | */ | |
3604 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3605 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3606 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3607 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3608 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3609 | return -1; |
3610 | } | |
3611 | ||
554cd77a VB |
3612 | memset(&evpn, 0, sizeof(evpn)); |
3613 | ||
d62a17ae | 3614 | /* Make prefix_rd */ |
3615 | prd.family = AF_UNSPEC; | |
3616 | prd.prefixlen = 64; | |
3617 | memcpy(&prd.val, pfx, 8); | |
3618 | pfx += 8; | |
3619 | ||
3620 | /* Make EVPN prefix. */ | |
3621 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3622 | p.family = AF_EVPN; |
50f74cf1 | 3623 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3624 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3625 | ||
554cd77a VB |
3626 | /* Copy Ethernet Seg Identifier */ |
3627 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3628 | pfx += ESI_LEN; | |
d62a17ae | 3629 | |
554cd77a VB |
3630 | /* Copy Ethernet Tag */ |
3631 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3632 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3633 | pfx += 4; |
3634 | ||
3635 | /* Get the MAC Addr len */ | |
3636 | macaddr_len = *pfx++; | |
3637 | ||
3638 | /* Get the MAC Addr */ | |
28328ea9 | 3639 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3640 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3641 | pfx += ETH_ALEN; |
d62a17ae | 3642 | } else { |
af4c2728 | 3643 | flog_err( |
e50f7cfd | 3644 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3645 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3646 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3647 | return -1; | |
3648 | } | |
3649 | ||
3650 | ||
3651 | /* Get the IP. */ | |
3652 | ipaddr_len = *pfx++; | |
3653 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3654 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3655 | flog_err( |
e50f7cfd | 3656 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3657 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3658 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3659 | return -1; | |
3660 | } | |
3661 | ||
3662 | if (ipaddr_len) { | |
3663 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3664 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3665 | ? IPADDR_V4 |
3666 | : IPADDR_V6; | |
3714a385 | 3667 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3668 | } |
3669 | pfx += ipaddr_len; | |
3670 | ||
b57ba6d2 MK |
3671 | /* Get the VNI(s). Stored as bytes here. */ |
3672 | num_labels++; | |
3673 | memset(label, 0, sizeof(label)); | |
3674 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3675 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3676 | psize -= (33 + ipaddr_len); |
3677 | /* Do we have a second VNI? */ | |
3678 | if (psize) { | |
3679 | num_labels++; | |
3680 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3681 | /* |
3682 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3683 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3684 | * the next field | |
6b11bd8d | 3685 | */ |
b57ba6d2 | 3686 | } |
d62a17ae | 3687 | |
3688 | /* Process the route. */ | |
3689 | if (attr) | |
3690 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3691 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3692 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3693 | else |
3694 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3695 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3696 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3697 | return ret; |
128ea8ab | 3698 | } |
3699 | ||
3700 | /* | |
3701 | * Process received EVPN type-3 route (advertise or withdraw). | |
3702 | */ | |
d62a17ae | 3703 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3704 | struct attr *attr, uint8_t *pfx, int psize, |
3705 | uint32_t addpath_id) | |
d62a17ae | 3706 | { |
3707 | struct prefix_rd prd; | |
3708 | struct prefix_evpn p; | |
d7c0a89a | 3709 | uint8_t ipaddr_len; |
554cd77a | 3710 | uint32_t eth_tag; |
d62a17ae | 3711 | int ret; |
3712 | ||
3713 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3714 | * IP len (1) and IP (4 or 16). | |
3715 | */ | |
3716 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3717 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3718 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3719 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3720 | return -1; |
3721 | } | |
3722 | ||
7fd077aa | 3723 | /* If PMSI is present, log if it is anything other than IR. |
3724 | * Note: We just simply ignore the values as it is not clear if | |
3725 | * doing anything else is better. | |
3726 | */ | |
3727 | if (attr && | |
3728 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3729 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
ade6974d | 3730 | flog_warn( |
e50f7cfd | 3731 | EC_BGP_EVPN_PMSI_PRESENT, |
ade6974d QY |
3732 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
3733 | peer->bgp->vrf_id, peer->host, | |
3734 | attr->pmsi_tnl_type); | |
7fd077aa | 3735 | } |
3736 | } | |
3737 | ||
d62a17ae | 3738 | /* Make prefix_rd */ |
3739 | prd.family = AF_UNSPEC; | |
3740 | prd.prefixlen = 64; | |
3741 | memcpy(&prd.val, pfx, 8); | |
3742 | pfx += 8; | |
3743 | ||
3744 | /* Make EVPN prefix. */ | |
3745 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3746 | p.family = AF_EVPN; |
50f74cf1 | 3747 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3748 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3749 | ||
554cd77a VB |
3750 | /* Copy Ethernet Tag */ |
3751 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3752 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3753 | pfx += 4; |
3754 | ||
3755 | /* Get the IP. */ | |
3756 | ipaddr_len = *pfx++; | |
3757 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3758 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3759 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3760 | } else { |
af4c2728 | 3761 | flog_err( |
e50f7cfd | 3762 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3763 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3764 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3765 | return -1; | |
3766 | } | |
3767 | ||
3768 | /* Process the route. */ | |
3769 | if (attr) | |
3770 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3771 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3772 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3773 | else |
3774 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3775 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3776 | &prd, NULL, 0, NULL); |
d62a17ae | 3777 | return ret; |
128ea8ab | 3778 | } |
3779 | ||
50f74cf1 | 3780 | /* |
3781 | * Process received EVPN type-4 route (advertise or withdraw). | |
3782 | */ | |
3783 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3784 | struct attr *attr, uint8_t *pfx, int psize, | |
3785 | uint32_t addpath_id) | |
3786 | { | |
3787 | int ret; | |
3788 | esi_t esi; | |
3789 | uint8_t ipaddr_len; | |
3790 | struct in_addr vtep_ip; | |
3791 | struct prefix_rd prd; | |
3792 | struct prefix_evpn p; | |
3793 | ||
3794 | /* Type-4 route should be either 23 or 35 bytes | |
3795 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3796 | */ | |
3797 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3798 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3799 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3800 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3801 | return -1; |
3802 | } | |
3803 | ||
3804 | /* Make prefix_rd */ | |
3805 | prd.family = AF_UNSPEC; | |
3806 | prd.prefixlen = 64; | |
3807 | memcpy(&prd.val, pfx, 8); | |
3808 | pfx += 8; | |
3809 | ||
3810 | /* get the ESI */ | |
3811 | memcpy(&esi, pfx, ESI_BYTES); | |
3812 | pfx += ESI_BYTES; | |
3813 | ||
3814 | ||
3815 | /* Get the IP. */ | |
3816 | ipaddr_len = *pfx++; | |
3817 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3818 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3819 | } else { | |
af4c2728 | 3820 | flog_err( |
e50f7cfd | 3821 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 3822 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3823 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3824 | return -1; | |
3825 | } | |
3826 | ||
3827 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3828 | /* Process the route. */ | |
3829 | if (attr) { | |
3830 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3831 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3832 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3833 | } else { |
50f74cf1 | 3834 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3835 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3836 | &prd, NULL, 0, NULL); | |
3837 | } | |
3838 | return ret; | |
3839 | } | |
3840 | ||
3841 | ||
128ea8ab | 3842 | /* |
3843 | * Process received EVPN type-5 route (advertise or withdraw). | |
3844 | */ | |
d62a17ae | 3845 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3846 | struct attr *attr, uint8_t *pfx, int psize, |
3847 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3848 | { |
3849 | struct prefix_rd prd; | |
3850 | struct prefix_evpn p; | |
3851 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3852 | uint8_t ippfx_len; |
3853 | uint32_t eth_tag; | |
b57ba6d2 | 3854 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3855 | int ret; |
3856 | ||
3857 | /* Type-5 route should be 34 or 58 bytes: | |
3858 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3859 | * GW (4 or 16) and VNI (3). | |
3860 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3861 | */ | |
3862 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3863 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3864 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3865 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3866 | return -1; |
3867 | } | |
3868 | ||
3869 | /* Make prefix_rd */ | |
3870 | prd.family = AF_UNSPEC; | |
3871 | prd.prefixlen = 64; | |
3872 | memcpy(&prd.val, pfx, 8); | |
3873 | pfx += 8; | |
3874 | ||
3875 | /* Make EVPN prefix. */ | |
3876 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3877 | p.family = AF_EVPN; |
50f74cf1 | 3878 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3879 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3880 | ||
3881 | /* Additional information outside of prefix - ESI and GW IP */ | |
3882 | memset(&evpn, 0, sizeof(evpn)); | |
3883 | ||
3884 | /* Fetch ESI */ | |
3885 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3886 | pfx += 10; | |
3887 | ||
3888 | /* Fetch Ethernet Tag. */ | |
3889 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3890 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3891 | pfx += 4; |
3892 | ||
3893 | /* Fetch IP prefix length. */ | |
3894 | ippfx_len = *pfx++; | |
3895 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3896 | flog_err( |
e50f7cfd | 3897 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3898 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3899 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3900 | return -1; | |
3901 | } | |
3714a385 | 3902 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3903 | |
3904 | /* Determine IPv4 or IPv6 prefix */ | |
3905 | /* Since the address and GW are from the same family, this just becomes | |
3906 | * a simple check on the total size. | |
3907 | */ | |
3908 | if (psize == 34) { | |
3714a385 | 3909 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3910 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3911 | pfx += 4; |
3912 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3913 | pfx += 4; | |
d62a17ae | 3914 | } else { |
3714a385 | 3915 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3916 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3917 | pfx += 16; |
3918 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3919 | pfx += 16; | |
d62a17ae | 3920 | } |
3921 | ||
b57ba6d2 MK |
3922 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3923 | memset(&label, 0, sizeof(label)); | |
3924 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3925 | |
3926 | /* | |
3927 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3928 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3929 | * field | |
6b11bd8d | 3930 | */ |
d62a17ae | 3931 | |
3932 | /* Process the route. */ | |
3933 | if (!withdraw) | |
3934 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3935 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3936 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3937 | else |
3938 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3939 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3940 | &prd, &label, 1, &evpn); |
d62a17ae | 3941 | |
3942 | return ret; | |
3943 | } | |
3944 | ||
3945 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3946 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3947 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3948 | { |
3949 | int len; | |
3950 | char temp[16]; | |
3951 | struct evpn_addr *p_evpn_p; | |
3952 | ||
3953 | memset(&temp, 0, 16); | |
b03b8898 | 3954 | if (p->family != AF_EVPN) |
d62a17ae | 3955 | return; |
3956 | p_evpn_p = &(p->u.prefix_evpn); | |
3957 | ||
e9fc2840 | 3958 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3959 | IP and GW-IP have to be both ipv4 or ipv6 |
3960 | */ | |
3714a385 | 3961 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3962 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3963 | else |
e9fc2840 | 3964 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3965 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3966 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3967 | stream_put(s, prd->val, 8); | |
0af35d90 | 3968 | if (attr) |
d62a17ae | 3969 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3970 | else | |
3971 | stream_put(s, &temp, 10); | |
3714a385 | 3972 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3973 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3974 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3975 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3976 | else |
3714a385 | 3977 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3978 | if (attr) { |
3714a385 | 3979 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3980 | stream_put_ipv4(s, |
3981 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3982 | else | |
3983 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3984 | } else { | |
3714a385 | 3985 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3986 | stream_put_ipv4(s, 0); |
3987 | else | |
3988 | stream_put(s, &temp, 16); | |
3989 | } | |
3990 | ||
b57ba6d2 | 3991 | if (num_labels) |
d62a17ae | 3992 | stream_put(s, label, 3); |
3993 | else | |
3994 | stream_put3(s, 0); | |
128ea8ab | 3995 | } |
3996 | ||
3997 | /* | |
3998 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3999 | */ | |
d62a17ae | 4000 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 4001 | { |
d62a17ae | 4002 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 4003 | |
d62a17ae | 4004 | /* Remove EVPN routes and schedule for processing. */ |
4005 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4006 | |
d62a17ae | 4007 | /* Clear "live" flag and see if hash needs to be freed. */ |
4008 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4009 | if (!is_vni_configured(vpn)) | |
4010 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4011 | } |
4012 | ||
4013 | /* | |
4014 | * Free a VNI entry; iterator function called during cleanup. | |
4015 | */ | |
d62a17ae | 4016 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 4017 | { |
0a1a07cb | 4018 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 4019 | |
d62a17ae | 4020 | delete_all_vni_routes(bgp, vpn); |
4021 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4022 | } |
4023 | ||
c581d8b0 MK |
4024 | /* |
4025 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4026 | */ | |
4027 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4028 | { | |
10ebe1ab MK |
4029 | struct bgp *bgp_def = NULL; |
4030 | ||
c581d8b0 | 4031 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4032 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4033 | ||
4034 | /* Map RT to VRF */ | |
4035 | bgp_def = bgp_get_default(); | |
4036 | if (!bgp_def) | |
4037 | return; | |
4038 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4039 | } |
4040 | ||
4041 | /* | |
4042 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4043 | */ | |
4044 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4045 | { | |
4046 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4047 | } | |
4048 | ||
4049 | /* | |
4050 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4051 | */ | |
4052 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4053 | { | |
4054 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4055 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4056 | } | |
4057 | ||
4058 | /* | |
4059 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4060 | */ | |
4061 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4062 | { | |
4063 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4064 | } | |
128ea8ab | 4065 | |
f1f8b53c MK |
4066 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4067 | { | |
4068 | struct bgp *bgp_def = NULL; | |
4069 | struct listnode *node = NULL; | |
4070 | struct bgpevpn *vpn = NULL; | |
4071 | ||
4072 | bgp_def = bgp_get_default(); | |
4073 | if (!bgp_def) | |
4074 | return; | |
4075 | ||
4992b4ae MK |
4076 | /* update all type-5 routes */ |
4077 | update_advertise_vrf_routes(bgp_vrf); | |
4078 | ||
4079 | /* update all type-2 routes */ | |
f1f8b53c MK |
4080 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4081 | update_routes_for_vni(bgp_def, vpn); | |
4082 | } | |
4083 | ||
bf1061d8 VB |
4084 | /* |
4085 | * Handle autort change for a given VNI. | |
4086 | */ | |
4087 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4088 | { | |
4089 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 | 4090 | |
bf1061d8 VB |
4091 | if (!is_import_rt_configured(vpn)) { |
4092 | if (is_vni_live(vpn)) | |
4093 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4094 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4095 | list_delete_all_node(vpn->import_rtl); |
4096 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4097 | if (is_vni_live(vpn)) | |
4098 | bgp_evpn_install_routes(bgp, vpn); | |
4099 | } | |
4100 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4101 | list_delete_all_node(vpn->export_rtl); |
4102 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4103 | if (is_vni_live(vpn)) | |
4104 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4105 | } | |
4106 | } | |
4107 | ||
128ea8ab | 4108 | /* |
4109 | * Public functions. | |
4110 | */ | |
4111 | ||
5424b7ba | 4112 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4113 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4114 | afi_t afi, safi_t safi) |
4115 | { | |
4116 | int ret = 0; | |
4117 | struct prefix_evpn evp; | |
4118 | char buf[PREFIX_STRLEN]; | |
4119 | ||
31310b25 | 4120 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4121 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4122 | if (ret) { | |
af4c2728 | 4123 | flog_err( |
e50f7cfd | 4124 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4125 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4126 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4127 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4128 | } |
4129 | } | |
4130 | ||
342dd0c6 | 4131 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4132 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4133 | { |
4134 | struct bgp_table *table = NULL; | |
4135 | struct bgp_node *rn = NULL; | |
40381db7 | 4136 | struct bgp_path_info *pi; |
342dd0c6 | 4137 | |
053905d2 | 4138 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4139 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4140 | /* Only care about "selected" routes - non-imported. */ | |
4141 | /* TODO: Support for AddPath for EVPN. */ | |
40381db7 DS |
4142 | for (pi = rn->info; pi; pi = pi->next) { |
4143 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) | |
4144 | && (!pi->extra || !pi->extra->parent)) { | |
25f2ca53 | 4145 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4146 | afi, safi); | |
4147 | break; | |
4148 | } | |
4149 | } | |
4150 | } | |
5424b7ba | 4151 | } |
342dd0c6 | 4152 | |
2f69f6d3 | 4153 | /* |
4154 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4155 | * to this function correspond to those of the source IP prefix (best | |
4156 | * path in the case of the attr. In the case of a local prefix (when we | |
4157 | * are advertising local subnets), the src_attr will be NULL. | |
4158 | */ | |
31310b25 | 4159 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4160 | struct attr *src_attr, afi_t afi, |
4161 | safi_t safi) | |
5424b7ba MK |
4162 | { |
4163 | int ret = 0; | |
4164 | struct prefix_evpn evp; | |
4165 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4166 | |
31310b25 | 4167 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4168 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4169 | if (ret) | |
e50f7cfd | 4170 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4171 | "%u: Failed to create type-5 route for prefix %s", |
4172 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4173 | } |
4174 | ||
2f69f6d3 | 4175 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4176 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4177 | * advertisement is enabled. | |
4178 | */ | |
996c9314 LB |
4179 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4180 | safi_t safi) | |
342dd0c6 | 4181 | { |
4182 | struct bgp_table *table = NULL; | |
4183 | struct bgp_node *rn = NULL; | |
40381db7 | 4184 | struct bgp_path_info *pi; |
342dd0c6 | 4185 | |
053905d2 | 4186 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4187 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4188 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4189 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4190 | * TODO: Support for AddPath for EVPN. |
4191 | */ | |
40381db7 DS |
4192 | for (pi = rn->info; pi; pi = pi->next) { |
4193 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) | |
4194 | && (!pi->extra || !pi->extra->parent)) { | |
53c84f78 MK |
4195 | |
4196 | /* apply the route-map */ | |
4197 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4198 | int ret = 0; | |
4199 | ||
996c9314 LB |
4200 | ret = route_map_apply( |
4201 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4202 | .map, | |
40381db7 | 4203 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4204 | if (ret == RMAP_DENYMATCH) |
4205 | continue; | |
4206 | } | |
996c9314 | 4207 | bgp_evpn_advertise_type5_route( |
40381db7 | 4208 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4209 | break; |
4210 | } | |
4211 | } | |
31310b25 | 4212 | } |
342dd0c6 | 4213 | } |
4214 | ||
996c9314 | 4215 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4216 | { |
4217 | struct listnode *node, *nnode, *node_to_del; | |
4218 | struct ecommunity *ecom, *ecom_auto; | |
4219 | struct ecommunity_val eval; | |
4220 | ||
bf1061d8 VB |
4221 | if (bgp->advertise_autort_rfc8365) |
4222 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4223 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4224 | ||
4225 | ecom_auto = ecommunity_new(); | |
4226 | ecommunity_add_val(ecom_auto, &eval); | |
4227 | node_to_del = NULL; | |
4228 | ||
4229 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4230 | if (ecommunity_match(ecom, ecom_auto)) { | |
4231 | ecommunity_free(&ecom); | |
4232 | node_to_del = node; | |
4233 | } | |
4234 | } | |
4235 | ||
4236 | if (node_to_del) | |
4237 | list_delete_node(rtl, node_to_del); | |
4238 | ||
4239 | ecommunity_free(&ecom_auto); | |
4240 | } | |
4241 | ||
4242 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4243 | struct ecommunity *ecomadd) |
c581d8b0 | 4244 | { |
5ba238b7 MK |
4245 | /* uninstall routes from vrf */ |
4246 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4247 | |
4248 | /* Cleanup the RT to VRF mapping */ | |
4249 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4250 | ||
c581d8b0 MK |
4251 | /* Remove auto generated RT */ |
4252 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4253 | ||
4254 | /* Add the newly configured RT to RT list */ | |
4255 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4256 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4257 | ||
10ebe1ab MK |
4258 | /* map VRF to its RTs */ |
4259 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4260 | ||
5ba238b7 MK |
4261 | /* install routes matching the new VRF */ |
4262 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4263 | } |
4264 | ||
4265 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4266 | struct ecommunity *ecomdel) | |
4267 | { | |
4268 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4269 | struct ecommunity *ecom = NULL; | |
4270 | ||
5ba238b7 MK |
4271 | /* uninstall routes from vrf */ |
4272 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4273 | |
4274 | /* Cleanup the RT to VRF mapping */ | |
4275 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4276 | ||
c581d8b0 MK |
4277 | /* remove the RT from the RT list */ |
4278 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4279 | if (ecommunity_match(ecom, ecomdel)) { | |
4280 | ecommunity_free(&ecom); | |
4281 | node_to_del = node; | |
4282 | break; | |
4283 | } | |
4284 | } | |
4285 | ||
4286 | if (node_to_del) | |
4287 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4288 | ||
b3a4db3d | 4289 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4290 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4291 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4292 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4293 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4294 | } | |
4295 | ||
10ebe1ab MK |
4296 | /* map VRFs to its RTs */ |
4297 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4298 | ||
5ba238b7 MK |
4299 | /* install routes matching this new RT */ |
4300 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4301 | } |
4302 | ||
4303 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4304 | struct ecommunity *ecomadd) | |
4305 | { | |
4306 | /* remove auto-generated RT */ | |
4307 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4308 | ||
4309 | /* Add the new RT to the RT list */ | |
4310 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4311 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4312 | ||
f1f8b53c | 4313 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4314 | } |
4315 | ||
4316 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4317 | struct ecommunity *ecomdel) | |
4318 | { | |
4319 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4320 | struct ecommunity *ecom = NULL; | |
4321 | ||
4322 | /* Remove the RT from the RT list */ | |
4323 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4324 | if (ecommunity_match(ecom, ecomdel)) { | |
4325 | ecommunity_free(&ecom); | |
4326 | node_to_del = node; | |
4327 | break; | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | if (node_to_del) | |
4332 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4333 | ||
1525e99f DS |
4334 | /* |
4335 | * Temporary assert to make SA happy. | |
4336 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4337 | * which means that SA is going to complain about | |
4338 | * the list_isempty call, which doesn't NULL check. | |
4339 | * So until we get this situation cleaned up, here | |
4340 | * we are. | |
4341 | */ | |
4342 | assert(bgp_vrf->vrf_export_rtl); | |
4343 | ||
c581d8b0 | 4344 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4345 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4346 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4347 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4348 | } | |
4349 | ||
f1f8b53c | 4350 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4351 | } |
4352 | ||
2d48ee25 | 4353 | /* |
4354 | * Handle change to BGP router id. This is invoked twice by the change | |
4355 | * handler, first before the router id has been changed and then after | |
4356 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4357 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4358 | * will result in the routes being re-advertised. |
4359 | */ | |
d62a17ae | 4360 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4361 | { |
676f83b9 | 4362 | if (withdraw) { |
4363 | ||
4364 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4365 | stored in the global table for this vrf |
4366 | */ | |
80b140af | 4367 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4368 | |
4369 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4370 | * L2-VNIs |
4371 | */ | |
d62a17ae | 4372 | hash_iterate(bgp->vnihash, |
4373 | (void (*)(struct hash_backet *, | |
4374 | void *))withdraw_router_id_vni, | |
4375 | bgp); | |
676f83b9 | 4376 | } else { |
4377 | ||
4378 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4379 | * RD |
4380 | */ | |
80b140af | 4381 | update_router_id_vrf(bgp); |
676f83b9 | 4382 | |
4383 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4384 | * new RD |
4385 | */ | |
d62a17ae | 4386 | hash_iterate(bgp->vnihash, |
4387 | (void (*)(struct hash_backet *, | |
4388 | void *))update_router_id_vni, | |
4389 | bgp); | |
676f83b9 | 4390 | } |
2d48ee25 | 4391 | } |
4392 | ||
bf1061d8 VB |
4393 | /* |
4394 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4395 | */ | |
4396 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4397 | { | |
4398 | hash_iterate(bgp->vnihash, | |
4399 | (void (*)(struct hash_backet *, | |
4400 | void*))update_autort_vni, | |
4401 | bgp); | |
4402 | } | |
4403 | ||
90e60aa7 | 4404 | /* |
4405 | * Handle change to export RT - update and advertise local routes. | |
4406 | */ | |
d62a17ae | 4407 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4408 | { |
d62a17ae | 4409 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4410 | } |
4411 | ||
996c9314 | 4412 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4413 | { |
4414 | if (withdraw) | |
4415 | delete_withdraw_vrf_routes(bgp_vrf); | |
4416 | else | |
4417 | update_advertise_vrf_routes(bgp_vrf); | |
4418 | } | |
4419 | ||
90e60aa7 | 4420 | /* |
4421 | * Handle change to RD. This is invoked twice by the change handler, | |
4422 | * first before the RD has been changed and then after the RD has | |
4423 | * been changed. The first invocation will result in local routes | |
4424 | * of this VNI being deleted and withdrawn and the next will result | |
4425 | * in the routes being re-advertised. | |
4426 | */ | |
d62a17ae | 4427 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4428 | int withdraw) | |
90e60aa7 | 4429 | { |
d62a17ae | 4430 | if (withdraw) |
4431 | delete_withdraw_vni_routes(bgp, vpn); | |
4432 | else | |
4433 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4434 | } |
4435 | ||
4436 | /* | |
4437 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4438 | */ | |
d62a17ae | 4439 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4440 | { |
d62a17ae | 4441 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4442 | } |
4443 | ||
4444 | /* | |
4445 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4446 | * to Import RT. | |
4447 | */ | |
d62a17ae | 4448 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4449 | { |
d62a17ae | 4450 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4451 | } |
4452 | ||
b16031a2 | 4453 | /* |
b57ba6d2 | 4454 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4455 | */ |
d7c0a89a | 4456 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4457 | int len) |
b16031a2 | 4458 | { |
b57ba6d2 | 4459 | vni_t vni1, vni2; |
b16031a2 | 4460 | |
b57ba6d2 MK |
4461 | vni1 = label2vni(label); |
4462 | if (num_labels == 2) { | |
996c9314 | 4463 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4464 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4465 | } else | |
4466 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4467 | return buf; |
b16031a2 | 4468 | } |
4469 | ||
9c92b5f7 MK |
4470 | /* |
4471 | * Function to convert evpn route to json format. | |
4472 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4473 | */ | |
57f7feb6 | 4474 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4475 | { |
b682f6de | 4476 | char buf1[ETHER_ADDR_STRLEN]; |
4477 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4478 | |
b682f6de | 4479 | if (!json) |
4480 | return; | |
9c92b5f7 | 4481 | |
dff8f48d | 4482 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4483 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4484 | json_object_int_add(json, "ethTag", |
4485 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4486 | json_object_int_add(json, "ipLen", |
3714a385 | 4487 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4488 | ? IPV4_MAX_BITLEN |
4489 | : IPV6_MAX_BITLEN); | |
b682f6de | 4490 | json_object_string_add(json, "ip", |
3714a385 | 4491 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4492 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4493 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4494 | json_object_int_add(json, "routeType", |
4495 | p->prefix.route_type); | |
3714a385 | 4496 | json_object_int_add(json, "ethTag", |
4497 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4498 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4499 | json_object_string_add(json, "mac", | |
3714a385 | 4500 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4501 | buf1, |
4502 | sizeof(buf1))); | |
dff8f48d | 4503 | } else { |
d7c0a89a | 4504 | uint8_t family; |
dff8f48d | 4505 | |
3714a385 | 4506 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4507 | : AF_INET6; |
dff8f48d | 4508 | |
b682f6de | 4509 | json_object_int_add(json, "routeType", |
57f7feb6 | 4510 | p->prefix.route_type); |
3714a385 | 4511 | json_object_int_add(json, "ethTag", |
4512 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4513 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4514 | json_object_string_add(json, "mac", |
3714a385 | 4515 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4516 | buf1, |
4517 | sizeof(buf1))); | |
b682f6de | 4518 | json_object_int_add(json, "ipLen", |
3714a385 | 4519 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4520 | ? IPV4_MAX_BITLEN |
4521 | : IPV6_MAX_BITLEN); | |
4522 | json_object_string_add( | |
4523 | json, "ip", | |
3714a385 | 4524 | inet_ntop(family, |
4525 | &p->prefix.macip_addr.ip.ip.addr, | |
4526 | buf2, | |
57f7feb6 | 4527 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4528 | } |
4529 | } else { | |
4530 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4531 | } | |
9c92b5f7 MK |
4532 | } |
4533 | ||
520d5d76 | 4534 | /* |
4535 | * Function to convert evpn route to string. | |
4536 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4537 | */ | |
d62a17ae | 4538 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4539 | { | |
4540 | char buf1[ETHER_ADDR_STRLEN]; | |
4541 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4542 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4543 | |
4544 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4545 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4546 | p->prefix.imet_addr.eth_tag, |
4547 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4548 | : IPV6_MAX_BITLEN, |
3714a385 | 4549 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4550 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4551 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4552 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4553 | p->prefix.route_type, | |
3714a385 | 4554 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4555 | 8 * ETH_ALEN, |
3714a385 | 4556 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4557 | sizeof(buf1))); |
4558 | else { | |
d7c0a89a | 4559 | uint8_t family; |
d62a17ae | 4560 | |
3714a385 | 4561 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4562 | : AF_INET6; |
554cd77a VB |
4563 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4564 | p->prefix.route_type, | |
3714a385 | 4565 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4566 | 8 * ETH_ALEN, |
3714a385 | 4567 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4568 | sizeof(buf1)), |
4569 | family == AF_INET ? IPV4_MAX_BITLEN | |
4570 | : IPV6_MAX_BITLEN, | |
3714a385 | 4571 | inet_ntop(family, |
4572 | &p->prefix.macip_addr.ip.ip.addr, | |
4573 | buf2, | |
d62a17ae | 4574 | PREFIX2STR_BUFFER)); |
4575 | } | |
342dd0c6 | 4576 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4577 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4578 | p->prefix.route_type, | |
3714a385 | 4579 | p->prefix.prefix_addr.eth_tag, |
4580 | p->prefix.prefix_addr.ip_prefix_length, | |
4581 | is_evpn_prefix_ipaddr_v4(p) | |
4582 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4583 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4584 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4585 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4586 | p->prefix.route_type, | |
4587 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4588 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4589 | : IPV6_MAX_BITLEN, | |
4590 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4591 | } else { |
b03b8898 | 4592 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4593 | snprintf(buf, len, "(unsupported route type %d)", |
4594 | p->prefix.route_type); | |
d62a17ae | 4595 | } |
4596 | ||
4597 | return (buf); | |
520d5d76 | 4598 | } |
4599 | ||
128ea8ab | 4600 | /* |
4601 | * Encode EVPN prefix in Update (MP_REACH) | |
4602 | */ | |
d62a17ae | 4603 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4604 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4605 | uint32_t num_labels, struct attr *attr, |
4606 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4607 | { |
4608 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4609 | int len, ipa_len = 0; |
d62a17ae | 4610 | |
4611 | if (addpath_encode) | |
4612 | stream_putl(s, addpath_tx_id); | |
4613 | ||
4614 | /* Route type */ | |
4615 | stream_putc(s, evp->prefix.route_type); | |
4616 | ||
4617 | switch (evp->prefix.route_type) { | |
4618 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4619 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4620 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4621 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4622 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4623 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4624 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4625 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4626 | len += 3; | |
4627 | stream_putc(s, len); | |
996c9314 | 4628 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4629 | if (attr) |
4630 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4631 | else | |
4632 | stream_put(s, 0, 10); | |
3714a385 | 4633 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4634 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4635 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4636 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4637 | if (ipa_len) /* IP */ | |
4638 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4639 | ipa_len); | |
b57ba6d2 MK |
4640 | /* 1st label is the L2 VNI */ |
4641 | stream_put(s, label, BGP_LABEL_BYTES); | |
4642 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4643 | if (ipa_len && num_labels > 1) | |
996c9314 | 4644 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4645 | break; |
4646 | ||
4647 | case BGP_EVPN_IMET_ROUTE: | |
4648 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4649 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4650 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4651 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4652 | /* Originating Router's IP Addr */ | |
3714a385 | 4653 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4654 | break; |
4655 | ||
50f74cf1 | 4656 | case BGP_EVPN_ES_ROUTE: |
4657 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4658 | stream_put(s, prd->val, 8); /* RD */ | |
4659 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4660 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4661 | /* VTEP IP */ |
4662 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4663 | break; |
4664 | ||
d62a17ae | 4665 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4666 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4667 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4668 | break; |
4669 | ||
4670 | default: | |
4671 | break; | |
4672 | } | |
4673 | } | |
4674 | ||
4675 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4676 | struct bgp_nlri *packet, int withdraw) | |
4677 | { | |
d7c0a89a QY |
4678 | uint8_t *pnt; |
4679 | uint8_t *lim; | |
d62a17ae | 4680 | afi_t afi; |
4681 | safi_t safi; | |
d7c0a89a | 4682 | uint32_t addpath_id; |
d62a17ae | 4683 | int addpath_encoded; |
4684 | int psize = 0; | |
d7c0a89a | 4685 | uint8_t rtype; |
d62a17ae | 4686 | struct prefix p; |
4687 | ||
d62a17ae | 4688 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4689 | pnt = packet->nlri; | |
4690 | lim = pnt + packet->length; | |
4691 | afi = packet->afi; | |
4692 | safi = packet->safi; | |
4693 | addpath_id = 0; | |
4694 | ||
4695 | addpath_encoded = | |
4696 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4697 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4698 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4699 | ||
4700 | for (; pnt < lim; pnt += psize) { | |
4701 | /* Clear prefix structure. */ | |
4702 | memset(&p, 0, sizeof(struct prefix)); | |
4703 | ||
4704 | /* Deal with path-id if AddPath is supported. */ | |
4705 | if (addpath_encoded) { | |
4706 | /* When packet overflow occurs return immediately. */ | |
4707 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4708 | return -1; | |
4709 | ||
4710 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4711 | pnt += BGP_ADDPATH_ID_LEN; | |
4712 | } | |
4713 | ||
4714 | /* All EVPN NLRI types start with type and length. */ | |
4715 | if (pnt + 2 > lim) | |
4716 | return -1; | |
4717 | ||
4718 | rtype = *pnt++; | |
3f54c705 | 4719 | psize = *pnt++; |
d62a17ae | 4720 | |
4721 | /* When packet overflow occur return immediately. */ | |
4722 | if (pnt + psize > lim) | |
4723 | return -1; | |
4724 | ||
4725 | switch (rtype) { | |
4726 | case BGP_EVPN_MAC_IP_ROUTE: | |
4727 | if (process_type2_route(peer, afi, safi, | |
4728 | withdraw ? NULL : attr, pnt, | |
4729 | psize, addpath_id)) { | |
af4c2728 | 4730 | flog_err( |
e50f7cfd | 4731 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4732 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4733 | peer->bgp->vrf_id, peer->host, psize); | |
4734 | return -1; | |
4735 | } | |
4736 | break; | |
4737 | ||
4738 | case BGP_EVPN_IMET_ROUTE: | |
4739 | if (process_type3_route(peer, afi, safi, | |
4740 | withdraw ? NULL : attr, pnt, | |
4741 | psize, addpath_id)) { | |
af4c2728 | 4742 | flog_err( |
e50f7cfd | 4743 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4744 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4745 | peer->bgp->vrf_id, peer->host, psize); | |
4746 | return -1; | |
4747 | } | |
4748 | break; | |
4749 | ||
50f74cf1 | 4750 | case BGP_EVPN_ES_ROUTE: |
4751 | if (process_type4_route(peer, afi, safi, | |
4752 | withdraw ? NULL : attr, pnt, | |
4753 | psize, addpath_id)) { | |
af4c2728 | 4754 | flog_err( |
e50f7cfd | 4755 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4756 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4757 | peer->bgp->vrf_id, peer->host, psize); | |
4758 | return -1; | |
4759 | } | |
4760 | break; | |
4761 | ||
d62a17ae | 4762 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4763 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4764 | psize, addpath_id, withdraw)) { | |
af4c2728 | 4765 | flog_err( |
e50f7cfd | 4766 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4767 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4768 | peer->bgp->vrf_id, peer->host, psize); | |
4769 | return -1; | |
4770 | } | |
4771 | break; | |
4772 | ||
4773 | default: | |
4774 | break; | |
4775 | } | |
4776 | } | |
4777 | ||
4778 | /* Packet length consistency check. */ | |
4779 | if (pnt != lim) | |
4780 | return -1; | |
4781 | ||
4782 | return 0; | |
128ea8ab | 4783 | } |
4784 | ||
10ebe1ab MK |
4785 | /* |
4786 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4787 | * The mapping will be used during route processing. | |
4788 | * bgp_def: default bgp instance | |
4789 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4790 | */ | |
4791 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4792 | { | |
4793 | int i = 0; | |
4794 | struct ecommunity_val *eval = NULL; | |
4795 | struct listnode *node = NULL, *nnode = NULL; | |
4796 | struct ecommunity *ecom = NULL; | |
4797 | ||
4798 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4799 | for (i = 0; i < ecom->size; i++) { | |
4800 | eval = (struct ecommunity_val *)(ecom->val | |
4801 | + (i | |
4802 | * ECOMMUNITY_SIZE)); | |
4803 | map_vrf_to_rt(bgp_vrf, eval); | |
4804 | } | |
4805 | } | |
4806 | } | |
4807 | ||
4808 | /* | |
4809 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4810 | */ | |
4811 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4812 | { | |
4813 | int i; | |
4814 | struct ecommunity_val *eval; | |
4815 | struct listnode *node, *nnode; | |
4816 | struct ecommunity *ecom; | |
4817 | ||
4818 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4819 | for (i = 0; i < ecom->size; i++) { | |
4820 | struct vrf_irt_node *irt; | |
4821 | struct ecommunity_val eval_tmp; | |
4822 | ||
4823 | eval = (struct ecommunity_val *)(ecom->val | |
4824 | + (i | |
4825 | * ECOMMUNITY_SIZE)); | |
4826 | /* If using "automatic" RT, we only care about the | |
4827 | * local-admin sub-field. | |
4828 | * This is to facilitate using VNI as the RT for EBGP | |
4829 | * peering too. | |
4830 | */ | |
4831 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4832 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4833 | BGP_VRF_IMPORT_RT_CFGD)) | |
4834 | mask_ecom_global_admin(&eval_tmp, eval); | |
4835 | ||
4836 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4837 | if (irt) | |
4838 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4839 | } | |
4840 | } | |
4841 | } | |
4842 | ||
4843 | ||
128ea8ab | 4844 | /* |
4845 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4846 | * The mapping will be used during route processing. | |
4847 | */ | |
d62a17ae | 4848 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4849 | { |
d62a17ae | 4850 | int i; |
4851 | struct ecommunity_val *eval; | |
4852 | struct listnode *node, *nnode; | |
4853 | struct ecommunity *ecom; | |
128ea8ab | 4854 | |
d62a17ae | 4855 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4856 | for (i = 0; i < ecom->size; i++) { | |
4857 | eval = (struct ecommunity_val *)(ecom->val | |
4858 | + (i | |
4859 | * ECOMMUNITY_SIZE)); | |
4860 | map_vni_to_rt(bgp, vpn, eval); | |
4861 | } | |
4862 | } | |
128ea8ab | 4863 | } |
4864 | ||
4865 | /* | |
4866 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4867 | */ | |
d62a17ae | 4868 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4869 | { |
d62a17ae | 4870 | int i; |
4871 | struct ecommunity_val *eval; | |
4872 | struct listnode *node, *nnode; | |
4873 | struct ecommunity *ecom; | |
128ea8ab | 4874 | |
d62a17ae | 4875 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4876 | for (i = 0; i < ecom->size; i++) { | |
4877 | struct irt_node *irt; | |
4878 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4879 | |
d62a17ae | 4880 | eval = (struct ecommunity_val *)(ecom->val |
4881 | + (i | |
4882 | * ECOMMUNITY_SIZE)); | |
4883 | /* If using "automatic" RT, we only care about the | |
4884 | * local-admin sub-field. | |
4885 | * This is to facilitate using VNI as the RT for EBGP | |
4886 | * peering too. | |
4887 | */ | |
4888 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4889 | if (!is_import_rt_configured(vpn)) | |
4890 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4891 | |
d62a17ae | 4892 | irt = lookup_import_rt(bgp, &eval_tmp); |
4893 | if (irt) | |
4894 | unmap_vni_from_rt(bgp, vpn, irt); | |
4895 | } | |
4896 | } | |
128ea8ab | 4897 | } |
4898 | ||
4899 | /* | |
4900 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4901 | * The mapping will be used during route processing. | |
4902 | */ | |
d62a17ae | 4903 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4904 | { |
c581d8b0 | 4905 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4906 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4907 | |
d62a17ae | 4908 | /* Map RT to VNI */ |
4909 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4910 | } |
4911 | ||
4912 | /* | |
4913 | * Derive Export RT automatically for VNI. | |
4914 | */ | |
d62a17ae | 4915 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4916 | { |
c581d8b0 | 4917 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4918 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4919 | } |
4920 | ||
676f83b9 | 4921 | /* |
4922 | * Derive RD automatically for VNI using passed information - it | |
4923 | * is of the form RouterId:unique-id-for-vni. | |
4924 | */ | |
4925 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4926 | { | |
92708db6 | 4927 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4928 | } |
4929 | ||
128ea8ab | 4930 | /* |
4931 | * Derive RD automatically for VNI using passed information - it | |
4932 | * is of the form RouterId:unique-id-for-vni. | |
4933 | */ | |
d62a17ae | 4934 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4935 | { |
d62a17ae | 4936 | char buf[100]; |
128ea8ab | 4937 | |
d62a17ae | 4938 | vpn->prd.family = AF_UNSPEC; |
4939 | vpn->prd.prefixlen = 64; | |
4940 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4941 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4942 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4943 | } |
4944 | ||
7df407ed CS |
4945 | /* |
4946 | * Lookup L3-VNI | |
4947 | */ | |
4948 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4949 | { | |
4950 | struct list *inst = bm->bgp; | |
4951 | struct listnode *node; | |
4952 | struct bgp *bgp_vrf; | |
4953 | ||
4954 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4955 | if (bgp_vrf->l3vni == vni) | |
4956 | return true; | |
4957 | } | |
4958 | ||
4959 | return false; | |
4960 | } | |
4961 | ||
128ea8ab | 4962 | /* |
4963 | * Lookup VNI. | |
4964 | */ | |
d62a17ae | 4965 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4966 | { |
d62a17ae | 4967 | struct bgpevpn *vpn; |
4968 | struct bgpevpn tmp; | |
128ea8ab | 4969 | |
d62a17ae | 4970 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4971 | tmp.vni = vni; | |
4972 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4973 | return vpn; | |
128ea8ab | 4974 | } |
4975 | ||
4976 | /* | |
4977 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4978 | */ | |
d62a17ae | 4979 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4980 | struct in_addr originator_ip, |
4981 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4982 | { |
d62a17ae | 4983 | struct bgpevpn *vpn; |
128ea8ab | 4984 | |
d62a17ae | 4985 | if (!bgp) |
4986 | return NULL; | |
128ea8ab | 4987 | |
d62a17ae | 4988 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4989 | if (!vpn) | |
4990 | return NULL; | |
128ea8ab | 4991 | |
d62a17ae | 4992 | /* Set values - RD and RT set to defaults. */ |
4993 | vpn->vni = vni; | |
4994 | vpn->originator_ip = originator_ip; | |
29c53922 | 4995 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4996 | |
d62a17ae | 4997 | /* Initialize route-target import and export lists */ |
4998 | vpn->import_rtl = list_new(); | |
4999 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5000 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5001 | vpn->export_rtl = list_new(); |
5002 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5003 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5004 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5005 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5006 | |
d62a17ae | 5007 | /* Initialize EVPN route table. */ |
960035b2 | 5008 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5009 | |
d62a17ae | 5010 | /* Add to hash */ |
5011 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5012 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5013 | return NULL; | |
5014 | } | |
6a8657d0 MK |
5015 | |
5016 | /* add to l2vni list on corresponding vrf */ | |
5017 | bgpevpn_link_to_l3vni(vpn); | |
5018 | ||
d62a17ae | 5019 | QOBJ_REG(vpn, bgpevpn); |
5020 | return vpn; | |
128ea8ab | 5021 | } |
5022 | ||
5023 | /* | |
5024 | * Free a given VPN - called in multiple scenarios such as zebra | |
5025 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5026 | * This just frees appropriate memory, caller should have taken other | |
5027 | * needed actions. | |
5028 | */ | |
d62a17ae | 5029 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5030 | { |
6a8657d0 | 5031 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5032 | bgp_table_unlock(vpn->route_table); |
5033 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5034 | list_delete(&vpn->import_rtl); |
5035 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5036 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5037 | hash_release(bgp->vnihash, vpn); |
5038 | QOBJ_UNREG(vpn); | |
5039 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5040 | } |
5041 | ||
5042 | /* | |
50f74cf1 | 5043 | * Lookup local ES. |
5044 | */ | |
5045 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5046 | { | |
5047 | struct evpnes *es; | |
5048 | struct evpnes tmp; | |
5049 | ||
5050 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5051 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5052 | es = hash_lookup(bgp->esihash, &tmp); | |
5053 | return es; | |
5054 | } | |
5055 | ||
5056 | /* | |
5057 | * Create a new local es - invoked upon zebra notification. | |
5058 | */ | |
5059 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5060 | esi_t *esi, | |
5061 | struct ipaddr *originator_ip) | |
5062 | { | |
5063 | char buf[100]; | |
5064 | struct evpnes *es; | |
5065 | ||
5066 | if (!bgp) | |
5067 | return NULL; | |
5068 | ||
5069 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5070 | if (!es) | |
5071 | return NULL; | |
5072 | ||
5073 | /* set the ESI and originator_ip */ | |
5074 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5075 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5076 | ||
5077 | /* Initialise the VTEP list */ | |
5078 | es->vtep_list = list_new(); | |
ce167790 | 5079 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5080 | |
5081 | /* auto derive RD for this es */ | |
5082 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5083 | es->prd.family = AF_UNSPEC; | |
5084 | es->prd.prefixlen = 64; | |
5085 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5086 | (void)str2prefix_rd(buf, &es->prd); | |
5087 | ||
5088 | /* Initialize the ES route table */ | |
5089 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5090 | ||
5091 | /* Add to hash */ | |
5092 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5093 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5094 | return NULL; | |
5095 | } | |
5096 | ||
5097 | QOBJ_REG(es, evpnes); | |
5098 | return es; | |
5099 | } | |
5100 | ||
5101 | /* | |
5102 | * Free a given ES - | |
5103 | * This just frees appropriate memory, caller should have taken other | |
5104 | * needed actions. | |
5105 | */ | |
5106 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5107 | { | |
6a154c88 | 5108 | list_delete(&es->vtep_list); |
50f74cf1 | 5109 | bgp_table_unlock(es->route_table); |
5110 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5111 | hash_release(bgp->esihash, es); | |
5112 | QOBJ_UNREG(es); | |
5113 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5114 | } | |
5115 | ||
5116 | /* | |
5117 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5118 | */ |
d62a17ae | 5119 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5120 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5121 | { |
40381db7 | 5122 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5123 | } |
5124 | ||
5125 | /* | |
50f74cf1 | 5126 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5127 | */ |
d62a17ae | 5128 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5129 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5130 | { |
40381db7 | 5131 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5132 | } |
5133 | ||
db0e1937 MK |
5134 | /* filter routes which have martian next hops */ |
5135 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5136 | { | |
0291c246 MK |
5137 | afi_t afi; |
5138 | safi_t safi; | |
5139 | struct bgp_node *rd_rn, *rn; | |
5140 | struct bgp_table *table; | |
40381db7 | 5141 | struct bgp_path_info *pi; |
db0e1937 MK |
5142 | |
5143 | afi = AFI_L2VPN; | |
5144 | safi = SAFI_EVPN; | |
5145 | ||
5146 | /* Walk entire global routing table and evaluate routes which could be | |
5147 | * imported into this VPN. Note that we cannot just look at the routes | |
5148 | * for the VNI's RD - | |
5149 | * remote routes applicable for this VNI could have any RD. | |
5150 | */ | |
5151 | /* EVPN routes are a 2-level table. */ | |
5152 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5153 | rd_rn = bgp_route_next(rd_rn)) { | |
5154 | table = (struct bgp_table *)(rd_rn->info); | |
5155 | if (!table) | |
5156 | continue; | |
5157 | ||
5158 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5159 | ||
40381db7 | 5160 | for (pi = rn->info; pi; pi = pi->next) { |
db0e1937 MK |
5161 | |
5162 | /* Consider "valid" remote routes applicable for | |
5163 | * this VNI. */ | |
40381db7 DS |
5164 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5165 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 MK |
5166 | continue; |
5167 | ||
40381db7 | 5168 | if (bgp_nexthop_self(bgp, pi->attr->nexthop)) { |
db0e1937 MK |
5169 | |
5170 | char attr_str[BUFSIZ]; | |
5171 | char pbuf[PREFIX_STRLEN]; | |
5172 | ||
40381db7 | 5173 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5174 | BUFSIZ); |
5175 | ||
40381db7 | 5176 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5177 | NULL, 1)) |
5178 | zlog_debug( | |
b682f6de | 5179 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5180 | bgp->vrf_id, |
5181 | prefix2str( | |
60466a63 | 5182 | &rn->p, pbuf, |
db0e1937 MK |
5183 | sizeof(pbuf)), |
5184 | attr_str); | |
5185 | ||
5186 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5187 | &rn->p, pi); |
db0e1937 | 5188 | |
40381db7 | 5189 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5190 | safi); |
db0e1937 | 5191 | } |
db0e1937 MK |
5192 | } |
5193 | } | |
5194 | } | |
5195 | ||
5196 | return 0; | |
5197 | } | |
5198 | ||
128ea8ab | 5199 | /* |
5200 | * Handle del of a local MACIP. | |
5201 | */ | |
d62a17ae | 5202 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5203 | struct ipaddr *ip) | |
128ea8ab | 5204 | { |
d62a17ae | 5205 | struct bgpevpn *vpn; |
5206 | struct prefix_evpn p; | |
128ea8ab | 5207 | |
d62a17ae | 5208 | /* Lookup VNI hash - should exist. */ |
5209 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5210 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5211 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5212 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5213 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5214 | return -1; | |
5215 | } | |
128ea8ab | 5216 | |
d62a17ae | 5217 | /* Remove EVPN type-2 route and schedule for processing. */ |
5218 | build_evpn_type2_prefix(&p, mac, ip); | |
5219 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5220 | |
d62a17ae | 5221 | return 0; |
128ea8ab | 5222 | } |
5223 | ||
5224 | /* | |
5225 | * Handle add of a local MACIP. | |
5226 | */ | |
d62a17ae | 5227 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5228 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5229 | { |
d62a17ae | 5230 | struct bgpevpn *vpn; |
5231 | struct prefix_evpn p; | |
128ea8ab | 5232 | |
d62a17ae | 5233 | /* Lookup VNI hash - should exist. */ |
5234 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5235 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5236 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5237 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5238 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5239 | return -1; | |
5240 | } | |
128ea8ab | 5241 | |
d62a17ae | 5242 | /* Create EVPN type-2 route and schedule for processing. */ |
5243 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5244 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5245 | char buf[ETHER_ADDR_STRLEN]; |
5246 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5247 | |
af4c2728 | 5248 | flog_err( |
e50f7cfd | 5249 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5250 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5251 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5252 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5253 | ? "sticky gateway" | |
5254 | : "", | |
d62a17ae | 5255 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5256 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5257 | return -1; |
5258 | } | |
128ea8ab | 5259 | |
d62a17ae | 5260 | return 0; |
128ea8ab | 5261 | } |
5262 | ||
6a8657d0 MK |
5263 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5264 | struct bgp *bgp_vrf) | |
5265 | { | |
0a1a07cb | 5266 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
6a8657d0 MK |
5267 | struct bgp *bgp_def = NULL; |
5268 | ||
5269 | bgp_def = bgp_get_default(); | |
5270 | assert(bgp_def); | |
5271 | ||
6a8657d0 MK |
5272 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5273 | bgpevpn_link_to_l3vni(vpn); | |
5274 | } | |
5275 | ||
996c9314 LB |
5276 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5277 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5278 | { |
5279 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5280 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5281 | struct listnode *node = NULL; |
5282 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5283 | as_t as = 0; |
5284 | ||
d846168d | 5285 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5286 | * auto-creatio |
5287 | */ | |
fe1dc5a3 MK |
5288 | bgp_def = bgp_get_default(); |
5289 | if (!bgp_def) { | |
af4c2728 | 5290 | flog_err( |
e50f7cfd | 5291 | EC_BGP_NO_DFLT, |
996c9314 LB |
5292 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", |
5293 | l3vni); | |
fe1dc5a3 MK |
5294 | return -1; |
5295 | } | |
5296 | as = bgp_def->as; | |
5297 | ||
0437e105 | 5298 | /* if the BGP vrf instance doesn't exist - create one */ |
0b5131c9 | 5299 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5300 | if (!bgp_vrf) { |
5301 | ||
5302 | int ret = 0; | |
5303 | ||
5304 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5305 | BGP_INSTANCE_TYPE_VRF); | |
5306 | switch (ret) { | |
5307 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5308 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5309 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5310 | return -1; |
5311 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5312 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5313 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5314 | return -1; |
5315 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5316 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5317 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5318 | return -1; |
5319 | } | |
5320 | ||
5321 | /* mark as auto created */ | |
5322 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5323 | } | |
5324 | ||
5325 | /* associate with l3vni */ | |
5326 | bgp_vrf->l3vni = l3vni; | |
5327 | ||
5328 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5329 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5330 | ||
b67a60d2 | 5331 | /* set the originator ip */ |
5332 | bgp_vrf->originator_ip = originator_ip; | |
5333 | ||
c48d9f5f MK |
5334 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5335 | if (filter) | |
5336 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5337 | ||
c581d8b0 MK |
5338 | /* auto derive RD/RT */ |
5339 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5340 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5341 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5342 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5343 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5344 | |
6a8657d0 MK |
5345 | /* link all corresponding l2vnis */ |
5346 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5347 | (void (*)(struct hash_backet *, |
5348 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5349 | bgp_vrf); |
5350 | ||
c48d9f5f MK |
5351 | /* Only update all corresponding type-2 routes if we are advertising two |
5352 | * labels along with type-2 routes | |
5353 | */ | |
5354 | if (!filter) | |
5355 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5356 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5357 | |
06d2e8f3 MK |
5358 | /* advertise type-5 routes if needed */ |
5359 | update_advertise_vrf_routes(bgp_vrf); | |
5360 | ||
5ba238b7 MK |
5361 | /* install all remote routes belonging to this l3vni into correspondng |
5362 | * vrf */ | |
5363 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5364 | |
5365 | return 0; | |
5366 | } | |
5367 | ||
996c9314 | 5368 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5369 | { |
5370 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5371 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5372 | struct listnode *node = NULL; | |
18abc1eb | 5373 | struct listnode *next = NULL; |
f1f8b53c | 5374 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5375 | |
5376 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5377 | if (!bgp_vrf) { | |
af4c2728 | 5378 | flog_err( |
e50f7cfd | 5379 | EC_BGP_NO_DFLT, |
996c9314 LB |
5380 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5381 | l3vni); | |
fe1dc5a3 MK |
5382 | return -1; |
5383 | } | |
5384 | ||
f1f8b53c MK |
5385 | bgp_def = bgp_get_default(); |
5386 | if (!bgp_def) { | |
af4c2728 | 5387 | flog_err( |
e50f7cfd | 5388 | EC_BGP_NO_DFLT, |
996c9314 LB |
5389 | "Cannot process L3VNI %u Del - Could not find default BGP instance", |
5390 | l3vni); | |
f1f8b53c MK |
5391 | return -1; |
5392 | } | |
5393 | ||
d846168d | 5394 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5395 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5396 | * routes. This will uninstalling the routes from zebra and decremnt the |
5397 | * bgp info count. | |
523cafc4 | 5398 | */ |
d846168d | 5399 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5400 | |
06d2e8f3 MK |
5401 | /* delete/withdraw all type-5 routes */ |
5402 | delete_withdraw_vrf_routes(bgp_vrf); | |
5403 | ||
fe1dc5a3 MK |
5404 | /* remove the l3vni from vrf instance */ |
5405 | bgp_vrf->l3vni = 0; | |
5406 | ||
5407 | /* remove the Rmac from the BGP vrf */ | |
5408 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5409 | ||
c581d8b0 | 5410 | /* delete RD/RT */ |
1525e99f | 5411 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5412 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5413 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5414 | } |
1525e99f | 5415 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5416 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5417 | } |
fe1dc5a3 | 5418 | |
f1f8b53c | 5419 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5420 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5421 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5422 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5423 | update_routes_for_vni(bgp_def, vpn); | |
5424 | } | |
5425 | } | |
fe1dc5a3 | 5426 | |
18abc1eb | 5427 | /* If any L2VNIs point to this instance, unlink them. */ |
5428 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5429 | bgpevpn_unlink_from_l3vni(vpn); | |
5430 | ||
fe1dc5a3 MK |
5431 | /* Delete the instance if it was autocreated */ |
5432 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5433 | bgp_delete(bgp_vrf); | |
5434 | ||
5435 | return 0; | |
5436 | } | |
5437 | ||
128ea8ab | 5438 | /* |
5439 | * Handle del of a local VNI. | |
5440 | */ | |
d62a17ae | 5441 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5442 | { |
d62a17ae | 5443 | struct bgpevpn *vpn; |
128ea8ab | 5444 | |
d62a17ae | 5445 | /* Locate VNI hash */ |
5446 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5447 | if (!vpn) { | |
1e00627b | 5448 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5449 | flog_warn( |
e50f7cfd | 5450 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5451 | "%u: VNI hash entry for VNI %u not found at DEL", |
5452 | bgp->vrf_id, vni); | |
d62a17ae | 5453 | return 0; |
5454 | } | |
128ea8ab | 5455 | |
d62a17ae | 5456 | /* Remove all local EVPN routes and schedule for processing (to |
5457 | * withdraw from peers). | |
5458 | */ | |
5459 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5460 | |
db0e1937 MK |
5461 | /* |
5462 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5463 | */ | |
5464 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5465 | ||
d62a17ae | 5466 | /* Clear "live" flag and see if hash needs to be freed. */ |
5467 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5468 | if (!is_vni_configured(vpn)) | |
5469 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5470 | |
d62a17ae | 5471 | return 0; |
128ea8ab | 5472 | } |
5473 | ||
5474 | /* | |
d1911c26 | 5475 | * Handle add (or update) of a local VNI. The VNI changes we care |
5476 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5477 | */ |
d62a17ae | 5478 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5479 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5480 | { |
5481 | struct bgpevpn *vpn; | |
5482 | struct prefix_evpn p; | |
5483 | ||
d62a17ae | 5484 | /* Lookup VNI. If present and no change, exit. */ |
5485 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5486 | if (vpn) { |
29c53922 | 5487 | |
d1911c26 | 5488 | if (is_vni_live(vpn) |
5489 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5490 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5491 | /* Probably some other param has changed that we don't | |
5492 | * care about. */ | |
5493 | return 0; | |
5494 | ||
5495 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5496 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5497 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5498 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5499 | bgpevpn_link_to_l3vni(vpn); |
5500 | } | |
29c53922 | 5501 | |
d1911c26 | 5502 | /* If tunnel endpoint IP has changed, update (and delete prior |
5503 | * type-3 route, if needed.) | |
5504 | */ | |
5505 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5506 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5507 | |
d1911c26 | 5508 | /* Update all routes with new endpoint IP and/or export RT |
5509 | * for VRFs | |
5510 | */ | |
5511 | if (is_vni_live(vpn)) | |
5512 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5513 | } |
5514 | ||
5515 | /* Create or update as appropriate. */ | |
5516 | if (!vpn) { | |
29c53922 | 5517 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5518 | if (!vpn) { |
af4c2728 | 5519 | flog_err( |
e50f7cfd | 5520 | EC_BGP_VNI, |
d62a17ae | 5521 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5522 | bgp->vrf_id, vni); | |
5523 | return -1; | |
5524 | } | |
5525 | } | |
5526 | ||
db0e1937 | 5527 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5528 | if (is_vni_live(vpn)) |
5529 | return 0; | |
5530 | ||
d62a17ae | 5531 | /* Mark as "live" */ |
5532 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5533 | ||
db0e1937 MK |
5534 | /* tunnel is now active, add tunnel-ip to db */ |
5535 | bgp_tip_add(bgp, &originator_ip); | |
5536 | ||
5537 | /* filter routes as nexthop database has changed */ | |
5538 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5539 | ||
fd069644 DS |
5540 | /* |
5541 | * Create EVPN type-3 route and schedule for processing. | |
5542 | * | |
5543 | * RT-3 only if doing head-end replication | |
5544 | */ | |
5545 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { | |
5546 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5547 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5548 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5549 | "%u: Type3 route creation failure for VNI %u", | |
5550 | bgp->vrf_id, vni); | |
5551 | return -1; | |
5552 | } | |
d62a17ae | 5553 | } |
5554 | ||
5555 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5556 | * VNI, | |
5557 | * install them. | |
5558 | */ | |
5559 | install_routes_for_vni(bgp, vpn); | |
5560 | ||
d7d97010 MK |
5561 | /* If we are advertising gateway mac-ip |
5562 | It needs to be conveyed again to zebra */ | |
5563 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5564 | ||
d62a17ae | 5565 | return 0; |
b18825eb | 5566 | } |
14c1a7bf | 5567 | |
50f74cf1 | 5568 | /* |
5569 | * bgp_evpn_local_es_del | |
5570 | */ | |
5571 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5572 | esi_t *esi, | |
5573 | struct ipaddr *originator_ip) | |
5574 | { | |
5575 | char buf[ESI_STR_LEN]; | |
5576 | struct evpnes *es = NULL; | |
5577 | ||
5578 | if (!bgp->esihash) { | |
e50f7cfd | 5579 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5580 | bgp->vrf_id); |
50f74cf1 | 5581 | return -1; |
5582 | } | |
5583 | ||
5584 | /* Lookup ESI hash - should exist. */ | |
5585 | es = bgp_evpn_lookup_es(bgp, esi); | |
5586 | if (!es) { | |
e50f7cfd | 5587 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5588 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5589 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5590 | return -1; |
5591 | } | |
5592 | ||
5593 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5594 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5595 | */ |
5596 | delete_routes_for_es(bgp, es); | |
5597 | ||
5598 | /* free the hash entry */ | |
5599 | bgp_evpn_es_free(bgp, es); | |
5600 | ||
5601 | return 0; | |
5602 | } | |
5603 | ||
5604 | /* | |
5605 | * bgp_evpn_local_es_add | |
5606 | */ | |
5607 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5608 | esi_t *esi, | |
5609 | struct ipaddr *originator_ip) | |
5610 | { | |
5611 | char buf[ESI_STR_LEN]; | |
5612 | struct evpnes *es = NULL; | |
5613 | struct prefix_evpn p; | |
5614 | ||
5615 | if (!bgp->esihash) { | |
e50f7cfd | 5616 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5617 | bgp->vrf_id); |
50f74cf1 | 5618 | return -1; |
5619 | } | |
5620 | ||
5621 | /* create the new es */ | |
2bb9eff4 | 5622 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5623 | if (!es) { |
5624 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5625 | if (!es) { | |
af4c2728 | 5626 | flog_err( |
e50f7cfd | 5627 | EC_BGP_ES_CREATE, |
50f74cf1 | 5628 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5629 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5630 | return -1; | |
5631 | } | |
5632 | } | |
5633 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5634 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5635 | ||
5636 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5637 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5638 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5639 | "%u: Type4 route creation failure for ESI %s", |
5640 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5641 | return -1; |
5642 | } | |
5643 | ||
5644 | /* import all remote ES routes in th ES table */ | |
5645 | install_routes_for_es(bgp, es); | |
5646 | ||
5647 | return 0; | |
5648 | } | |
5649 | ||
fd069644 DS |
5650 | /* |
5651 | * Handle change in setting for BUM handling. The supported values | |
5652 | * are head-end replication and dropping all BUM packets. Any change | |
5653 | * should be registered with zebra. Also, if doing head-end replication, | |
5654 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5655 | * to be dropped, the RT-3s must be withdrawn. | |
5656 | */ | |
5657 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5658 | { | |
5659 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5660 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5661 | "Flooding" : "Flooding Disabled"); | |
5662 | ||
5663 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5664 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5665 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5666 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5667 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5668 | } | |
5669 | ||
7724c0a1 | 5670 | /* |
5671 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5672 | * EVPN routes from peers. | |
5673 | */ | |
d62a17ae | 5674 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5675 | { |
9d303b37 DL |
5676 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5677 | void *))cleanup_vni_on_disable, | |
5678 | bgp); | |
7724c0a1 | 5679 | } |
5680 | ||
14c1a7bf | 5681 | /* |
5682 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5683 | * BGP instance (default) is being freed. | |
5684 | */ | |
d62a17ae | 5685 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5686 | { |
1525e99f DS |
5687 | hash_iterate(bgp->vnihash, |
5688 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5689 | bgp); | |
5690 | ||
5691 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5692 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5693 | |
5694 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5695 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5696 | |
5697 | hash_free(bgp->vnihash); | |
d62a17ae | 5698 | bgp->vnihash = NULL; |
50f74cf1 | 5699 | if (bgp->esihash) |
5700 | hash_free(bgp->esihash); | |
5701 | bgp->esihash = NULL; | |
1525e99f | 5702 | |
6a154c88 DL |
5703 | list_delete(&bgp->vrf_import_rtl); |
5704 | list_delete(&bgp->vrf_export_rtl); | |
5705 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5706 | } |
5707 | ||
5708 | /* | |
5709 | * Initialization for EVPN | |
5710 | * Create | |
5711 | * VNI hash table | |
5712 | * hash for RT to VNI | |
14c1a7bf | 5713 | */ |
d62a17ae | 5714 | void bgp_evpn_init(struct bgp *bgp) |
5715 | { | |
5716 | bgp->vnihash = | |
5717 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5718 | bgp->esihash = |
5719 | hash_create(esi_hash_keymake, esi_cmp, | |
5720 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5721 | bgp->import_rt_hash = |
5722 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5723 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5724 | bgp->vrf_import_rt_hash = |
5725 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5726 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5727 | bgp->vrf_import_rtl = list_new(); |
5728 | bgp->vrf_import_rtl->cmp = | |
5729 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5730 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5731 | bgp->vrf_export_rtl = list_new(); |
5732 | bgp->vrf_export_rtl->cmp = | |
5733 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5734 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5735 | bgp->l2vnis = list_new(); |
64465785 | 5736 | bgp->l2vnis->cmp = vni_list_cmp; |
fd069644 DS |
5737 | |
5738 | /* Default BUM handling is to do head-end replication. */ | |
5739 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5740 | } |
10ebe1ab MK |
5741 | |
5742 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5743 | { | |
5744 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5745 | } |