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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" |
dcc68b5e | 50 | #include "bgpd/bgp_addpath.h" |
128ea8ab | 51 | |
52 | /* | |
53 | * Definitions and external declarations. | |
54 | */ | |
55 | extern struct zclient *zclient; | |
56 | ||
57 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 58 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 59 | |
60 | ||
61 | /* | |
62 | * Static function declarations | |
63 | */ | |
4b7e6066 | 64 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 65 | struct bgp_node *rn, |
40381db7 | 66 | struct bgp_path_info **pi); |
d62a17ae | 67 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
14c1a7bf | 68 | |
69 | /* | |
70 | * Private functions. | |
71 | */ | |
72 | ||
50f74cf1 | 73 | /* compare two IPV4 VTEP IPs */ |
ce167790 | 74 | static int evpn_vtep_ip_cmp(void *p1, void *p2) |
50f74cf1 | 75 | { |
76 | const struct in_addr *ip1 = p1; | |
77 | const struct in_addr *ip2 = p2; | |
78 | ||
ce167790 | 79 | return ip1->s_addr - ip2->s_addr; |
50f74cf1 | 80 | } |
81 | ||
82 | /* | |
83 | * Make hash key for ESI. | |
84 | */ | |
85 | static unsigned int esi_hash_keymake(void *p) | |
86 | { | |
87 | struct evpnes *pes = p; | |
88 | const void *pnt = (void *)pes->esi.val; | |
89 | ||
90 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
91 | } | |
92 | ||
93 | /* | |
94 | * Compare two ESIs. | |
95 | */ | |
74df8d6d | 96 | static bool esi_cmp(const void *p1, const void *p2) |
50f74cf1 | 97 | { |
98 | const struct evpnes *pes1 = p1; | |
99 | const struct evpnes *pes2 = p2; | |
100 | ||
101 | if (pes1 == NULL && pes2 == NULL) | |
74df8d6d | 102 | return true; |
50f74cf1 | 103 | |
104 | if (pes1 == NULL || pes2 == NULL) | |
74df8d6d | 105 | return false; |
50f74cf1 | 106 | |
107 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
108 | } | |
109 | ||
14c1a7bf | 110 | /* |
111 | * Make vni hash key. | |
112 | */ | |
d62a17ae | 113 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 114 | { |
d62a17ae | 115 | struct bgpevpn *vpn = p; |
116 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 117 | } |
118 | ||
119 | /* | |
120 | * Comparison function for vni hash | |
121 | */ | |
74df8d6d | 122 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 123 | { |
d62a17ae | 124 | const struct bgpevpn *vpn1 = p1; |
125 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 126 | |
d62a17ae | 127 | if (!vpn1 && !vpn2) |
74df8d6d | 128 | return true; |
d62a17ae | 129 | if (!vpn1 || !vpn2) |
74df8d6d | 130 | return false; |
d62a17ae | 131 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 132 | } |
133 | ||
64465785 DS |
134 | static int vni_list_cmp(void *p1, void *p2) |
135 | { | |
136 | const struct bgpevpn *vpn1 = p1; | |
137 | const struct bgpevpn *vpn2 = p2; | |
138 | ||
139 | return vpn1->vni - vpn2->vni; | |
140 | } | |
141 | ||
10ebe1ab MK |
142 | /* |
143 | * Make vrf import route target hash key. | |
144 | */ | |
145 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
146 | { | |
147 | struct vrf_irt_node *irt = p; | |
148 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
149 | |
150 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
151 | } |
152 | ||
153 | /* | |
154 | * Comparison function for vrf import rt hash | |
155 | */ | |
74df8d6d | 156 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
157 | { |
158 | const struct vrf_irt_node *irt1 = p1; | |
159 | const struct vrf_irt_node *irt2 = p2; | |
160 | ||
161 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 162 | return true; |
10ebe1ab MK |
163 | |
164 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 165 | return false; |
10ebe1ab MK |
166 | |
167 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Create a new vrf import_rt in default instance | |
172 | */ | |
173 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
174 | { | |
175 | struct bgp *bgp_def = NULL; | |
176 | struct vrf_irt_node *irt; | |
177 | ||
178 | bgp_def = bgp_get_default(); | |
179 | if (!bgp_def) { | |
e50f7cfd | 180 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 181 | "vrf import rt new - def instance not created yet"); |
10ebe1ab MK |
182 | return NULL; |
183 | } | |
184 | ||
185 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
186 | sizeof(struct vrf_irt_node)); | |
187 | if (!irt) | |
188 | return NULL; | |
189 | ||
190 | irt->rt = *rt; | |
191 | irt->vrfs = list_new(); | |
192 | ||
193 | /* Add to hash */ | |
194 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
195 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
196 | return NULL; | |
197 | } | |
198 | ||
199 | return irt; | |
200 | } | |
201 | ||
202 | /* | |
203 | * Free the vrf import rt node | |
204 | */ | |
205 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
206 | { | |
207 | struct bgp *bgp_def = NULL; | |
208 | ||
209 | bgp_def = bgp_get_default(); | |
210 | if (!bgp_def) { | |
e50f7cfd | 211 | flog_err(EC_BGP_NO_DFLT, |
1c50c1c0 | 212 | "vrf import rt free - def instance not created yet"); |
10ebe1ab MK |
213 | return; |
214 | } | |
215 | ||
216 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
6a154c88 | 217 | list_delete(&irt->vrfs); |
10ebe1ab MK |
218 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
219 | } | |
220 | ||
221 | /* | |
222 | * Function to lookup Import RT node - used to map a RT to set of | |
223 | * VNIs importing routes with that RT. | |
224 | */ | |
225 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
226 | { | |
227 | struct bgp *bgp_def = NULL; | |
228 | struct vrf_irt_node *irt; | |
229 | struct vrf_irt_node tmp; | |
230 | ||
231 | bgp_def = bgp_get_default(); | |
232 | if (!bgp_def) { | |
1c50c1c0 QY |
233 | flog_err(EC_BGP_NO_DFLT, |
234 | "vrf import rt lookup - def instance not created yet"); | |
10ebe1ab MK |
235 | return NULL; |
236 | } | |
237 | ||
238 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
239 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
240 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
241 | return irt; | |
242 | } | |
243 | ||
244 | /* | |
245 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
246 | */ | |
996c9314 | 247 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
248 | { |
249 | struct listnode *node = NULL, *nnode = NULL; | |
250 | struct bgp *tmp_bgp_vrf = NULL; | |
251 | ||
252 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
253 | if (tmp_bgp_vrf == bgp_vrf) | |
254 | return 1; | |
255 | } | |
256 | return 0; | |
257 | } | |
258 | ||
14c1a7bf | 259 | /* |
260 | * Make import route target hash key. | |
261 | */ | |
d62a17ae | 262 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 263 | { |
d62a17ae | 264 | struct irt_node *irt = p; |
265 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
266 | |
267 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 268 | } |
269 | ||
270 | /* | |
271 | * Comparison function for import rt hash | |
272 | */ | |
74df8d6d | 273 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 274 | { |
d62a17ae | 275 | const struct irt_node *irt1 = p1; |
276 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 277 | |
d62a17ae | 278 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 279 | return true; |
14c1a7bf | 280 | |
d62a17ae | 281 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 282 | return false; |
14c1a7bf | 283 | |
d62a17ae | 284 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 285 | } |
286 | ||
7724c0a1 | 287 | /* |
128ea8ab | 288 | * Create a new import_rt |
289 | */ | |
d62a17ae | 290 | static struct irt_node *import_rt_new(struct bgp *bgp, |
291 | struct ecommunity_val *rt) | |
128ea8ab | 292 | { |
d62a17ae | 293 | struct irt_node *irt; |
128ea8ab | 294 | |
d62a17ae | 295 | if (!bgp) |
296 | return NULL; | |
128ea8ab | 297 | |
d62a17ae | 298 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
299 | if (!irt) | |
300 | return NULL; | |
128ea8ab | 301 | |
d62a17ae | 302 | irt->rt = *rt; |
303 | irt->vnis = list_new(); | |
128ea8ab | 304 | |
d62a17ae | 305 | /* Add to hash */ |
306 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
307 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
308 | return NULL; | |
309 | } | |
128ea8ab | 310 | |
d62a17ae | 311 | return irt; |
128ea8ab | 312 | } |
313 | ||
314 | /* | |
315 | * Free the import rt node | |
7724c0a1 | 316 | */ |
d62a17ae | 317 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 318 | { |
d62a17ae | 319 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 320 | list_delete(&irt->vnis); |
d62a17ae | 321 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 322 | } |
323 | ||
14c1a7bf | 324 | /* |
128ea8ab | 325 | * Function to lookup Import RT node - used to map a RT to set of |
326 | * VNIs importing routes with that RT. | |
327 | */ | |
d62a17ae | 328 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
329 | struct ecommunity_val *rt) | |
128ea8ab | 330 | { |
d62a17ae | 331 | struct irt_node *irt; |
332 | struct irt_node tmp; | |
128ea8ab | 333 | |
d62a17ae | 334 | memset(&tmp, 0, sizeof(struct irt_node)); |
335 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
336 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
337 | return irt; | |
128ea8ab | 338 | } |
339 | ||
340 | /* | |
341 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
342 | */ | |
d62a17ae | 343 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 344 | { |
d62a17ae | 345 | struct listnode *node, *nnode; |
346 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 347 | |
d62a17ae | 348 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
349 | if (tmp_vpn == vpn) | |
350 | return 1; | |
351 | } | |
128ea8ab | 352 | |
d62a17ae | 353 | return 0; |
128ea8ab | 354 | } |
355 | ||
356 | /* | |
357 | * Compare Route Targets. | |
358 | */ | |
d62a17ae | 359 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
360 | struct ecommunity *ecom2) | |
128ea8ab | 361 | { |
d62a17ae | 362 | if (ecom1 && !ecom2) |
363 | return -1; | |
128ea8ab | 364 | |
d62a17ae | 365 | if (!ecom1 && ecom2) |
366 | return 1; | |
128ea8ab | 367 | |
d62a17ae | 368 | if (!ecom1 && !ecom2) |
369 | return 0; | |
128ea8ab | 370 | |
d62a17ae | 371 | if (ecom1->str && !ecom2->str) |
372 | return -1; | |
128ea8ab | 373 | |
d62a17ae | 374 | if (!ecom1->str && ecom2->str) |
375 | return 1; | |
128ea8ab | 376 | |
d62a17ae | 377 | if (!ecom1->str && !ecom2->str) |
378 | return 0; | |
128ea8ab | 379 | |
d62a17ae | 380 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 381 | } |
382 | ||
987d8198 DS |
383 | static void evpn_xxport_delete_ecomm(void *val) |
384 | { | |
385 | struct ecommunity *ecomm = val; | |
386 | ecommunity_free(&ecomm); | |
387 | } | |
388 | ||
128ea8ab | 389 | /* |
390 | * Mask off global-admin field of specified extended community (RT), | |
391 | * just retain the local-admin field. | |
392 | */ | |
d62a17ae | 393 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
394 | struct ecommunity_val *src) | |
128ea8ab | 395 | { |
d7c0a89a | 396 | uint8_t type; |
128ea8ab | 397 | |
d62a17ae | 398 | type = src->val[0]; |
399 | dst->val[0] = 0; | |
400 | if (type == ECOMMUNITY_ENCODE_AS) { | |
401 | dst->val[2] = dst->val[3] = 0; | |
402 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
403 | || type == ECOMMUNITY_ENCODE_IP) { | |
404 | dst->val[2] = dst->val[3] = 0; | |
405 | dst->val[4] = dst->val[5] = 0; | |
406 | } | |
128ea8ab | 407 | } |
408 | ||
10ebe1ab MK |
409 | /* |
410 | * Map one RT to specified VRF. | |
411 | * bgp_vrf = BGP vrf instance | |
412 | */ | |
996c9314 | 413 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
414 | { |
415 | struct vrf_irt_node *irt = NULL; | |
416 | struct ecommunity_val eval_tmp; | |
417 | ||
418 | /* If using "automatic" RT, | |
419 | * we only care about the local-admin sub-field. | |
420 | * This is to facilitate using L3VNI(VRF-VNI) | |
421 | * as the RT for EBGP peering too. | |
422 | */ | |
423 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 424 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
425 | mask_ecom_global_admin(&eval_tmp, eval); |
426 | ||
427 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
428 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
429 | /* Already mapped. */ | |
430 | return; | |
10ebe1ab | 431 | |
e066d6d0 | 432 | if (!irt) |
10ebe1ab | 433 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
434 | |
435 | /* Add VRF to the list for this RT. */ | |
436 | listnode_add(irt->vrfs, bgp_vrf); | |
437 | } | |
438 | ||
439 | /* | |
440 | * Unmap specified VRF from specified RT. If there are no other | |
441 | * VRFs for this RT, then the RT hash is deleted. | |
442 | * bgp_vrf: BGP VRF specific instance | |
443 | */ | |
996c9314 | 444 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
445 | { |
446 | /* Delete VRF from list for this RT. */ | |
447 | listnode_delete(irt->vrfs, bgp_vrf); | |
448 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
449 | vrf_import_rt_free(irt); |
450 | } | |
451 | } | |
452 | ||
128ea8ab | 453 | /* |
454 | * Map one RT to specified VNI. | |
14c1a7bf | 455 | */ |
d62a17ae | 456 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
457 | struct ecommunity_val *eval) | |
128ea8ab | 458 | { |
d62a17ae | 459 | struct irt_node *irt; |
460 | struct ecommunity_val eval_tmp; | |
128ea8ab | 461 | |
d62a17ae | 462 | /* If using "automatic" RT, we only care about the local-admin |
463 | * sub-field. | |
464 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
465 | */ | |
466 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
467 | if (!is_import_rt_configured(vpn)) | |
468 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 469 | |
d62a17ae | 470 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 471 | if (irt) |
d62a17ae | 472 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
473 | /* Already mapped. */ | |
474 | return; | |
128ea8ab | 475 | |
d62a17ae | 476 | if (!irt) { |
477 | irt = import_rt_new(bgp, &eval_tmp); | |
478 | assert(irt); | |
479 | } | |
128ea8ab | 480 | |
d62a17ae | 481 | /* Add VNI to the hash list for this RT. */ |
482 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 483 | } |
484 | ||
485 | /* | |
486 | * Unmap specified VNI from specified RT. If there are no other | |
487 | * VNIs for this RT, then the RT hash is deleted. | |
488 | */ | |
d62a17ae | 489 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
490 | struct irt_node *irt) | |
14c1a7bf | 491 | { |
d62a17ae | 492 | /* Delete VNI from hash list for this RT. */ |
493 | listnode_delete(irt->vnis, vpn); | |
494 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 495 | import_rt_free(bgp, irt); |
496 | } | |
14c1a7bf | 497 | } |
498 | ||
128ea8ab | 499 | /* |
500 | * Create RT extended community automatically from passed information: | |
501 | * of the form AS:VNI. | |
502 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
503 | * the need is to get a RT value that will be unique across different | |
504 | * VNIs but the same across routers (in the same AS) for a particular | |
505 | * VNI. | |
506 | */ | |
c581d8b0 | 507 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 508 | { |
d62a17ae | 509 | struct ecommunity_val eval; |
510 | struct ecommunity *ecomadd; | |
128ea8ab | 511 | |
bf1061d8 VB |
512 | if (bgp->advertise_autort_rfc8365) |
513 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 514 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 515 | |
d62a17ae | 516 | ecomadd = ecommunity_new(); |
517 | ecommunity_add_val(ecomadd, &eval); | |
518 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 519 | } |
14c1a7bf | 520 | |
521 | /* | |
128ea8ab | 522 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
523 | * creation of a VNI. | |
524 | */ | |
d62a17ae | 525 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 526 | { |
d62a17ae | 527 | bgp_evpn_derive_auto_rd(bgp, vpn); |
528 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
529 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 530 | } |
531 | ||
1ec31309 | 532 | /* |
533 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
534 | */ | |
535 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
536 | { | |
537 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
538 | return; | |
539 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
540 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
541 | } | |
542 | ||
128ea8ab | 543 | /* |
544 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 545 | */ |
d62a17ae | 546 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
547 | struct prefix_evpn *p, | |
548 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 549 | uint8_t flags, uint32_t seq) |
d62a17ae | 550 | { |
551 | struct stream *s; | |
552 | int ipa_len; | |
553 | char buf1[ETHER_ADDR_STRLEN]; | |
554 | char buf2[INET6_ADDRSTRLEN]; | |
555 | char buf3[INET6_ADDRSTRLEN]; | |
556 | ||
557 | /* Check socket. */ | |
558 | if (!zclient || zclient->sock < 0) | |
559 | return 0; | |
560 | ||
561 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
562 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
563 | if (BGP_DEBUG(zebra, ZEBRA)) | |
564 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
565 | __PRETTY_FUNCTION__); | |
d62a17ae | 566 | return 0; |
bb4ef1ae | 567 | } |
d62a17ae | 568 | s = zclient->obuf; |
569 | stream_reset(s); | |
570 | ||
996c9314 LB |
571 | zclient_create_header( |
572 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
573 | bgp->vrf_id); | |
d62a17ae | 574 | stream_putl(s, vpn->vni); |
3714a385 | 575 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 576 | /* IP address length and IP address, if any. */ |
3714a385 | 577 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 578 | stream_putl(s, 0); |
579 | else { | |
3714a385 | 580 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 581 | : IPV6_MAX_BYTELEN; |
582 | stream_putl(s, ipa_len); | |
3714a385 | 583 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 584 | } |
585 | stream_put_in_addr(s, &remote_vtep_ip); | |
586 | ||
ead40654 | 587 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 588 | /* Also TX the sequence number of the best route. */ |
589 | if (add) { | |
ead40654 | 590 | stream_putc(s, flags); |
f07e1c99 | 591 | stream_putl(s, seq); |
592 | } | |
d62a17ae | 593 | |
594 | stream_putw_at(s, 0, stream_get_endp(s)); | |
595 | ||
596 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 597 | zlog_debug( |
f07e1c99 | 598 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 599 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 600 | prefix_mac2str(&p->prefix.macip_addr.mac, |
601 | buf1, sizeof(buf1)), | |
602 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 603 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
604 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
605 | sizeof(buf2))); | |
d62a17ae | 606 | |
607 | return zclient_send_message(zclient); | |
7ef5a232 | 608 | } |
b18825eb | 609 | |
128ea8ab | 610 | /* |
611 | * Add (update) or delete remote VTEP from zebra. | |
612 | */ | |
d62a17ae | 613 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
614 | struct prefix_evpn *p, int add) | |
128ea8ab | 615 | { |
d62a17ae | 616 | struct stream *s; |
128ea8ab | 617 | |
d62a17ae | 618 | /* Check socket. */ |
619 | if (!zclient || zclient->sock < 0) | |
620 | return 0; | |
128ea8ab | 621 | |
d62a17ae | 622 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
623 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
624 | if (BGP_DEBUG(zebra, ZEBRA)) | |
625 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
626 | __PRETTY_FUNCTION__); | |
d62a17ae | 627 | return 0; |
bb4ef1ae | 628 | } |
128ea8ab | 629 | |
d62a17ae | 630 | s = zclient->obuf; |
631 | stream_reset(s); | |
128ea8ab | 632 | |
996c9314 LB |
633 | zclient_create_header( |
634 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
635 | bgp->vrf_id); | |
d62a17ae | 636 | stream_putl(s, vpn->vni); |
3714a385 | 637 | if (is_evpn_prefix_ipaddr_v4(p)) |
638 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
639 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 640 | flog_err( |
e50f7cfd | 641 | EC_BGP_VTEP_INVALID, |
d62a17ae | 642 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
643 | add ? "ADD" : "DEL", vpn->vni); | |
644 | return -1; | |
645 | } | |
128ea8ab | 646 | |
d62a17ae | 647 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 648 | |
d62a17ae | 649 | if (bgp_debug_zebra(NULL)) |
650 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
651 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 652 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 653 | |
d62a17ae | 654 | return zclient_send_message(zclient); |
128ea8ab | 655 | } |
656 | ||
50f74cf1 | 657 | /* |
658 | * Build extended community for EVPN ES (type-4) route | |
659 | */ | |
660 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
661 | struct attr *attr) | |
662 | { | |
663 | struct ecommunity ecom_encap; | |
664 | struct ecommunity ecom_es_rt; | |
665 | struct ecommunity_val eval; | |
666 | struct ecommunity_val eval_es_rt; | |
667 | bgp_encap_types tnl_type; | |
668 | struct ethaddr mac; | |
669 | ||
670 | /* Encap */ | |
671 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
672 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
673 | encode_encap_extcomm(tnl_type, &eval); | |
674 | ecom_encap.size = 1; | |
675 | ecom_encap.val = (uint8_t *)eval.val; | |
676 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
677 | ||
678 | /* ES import RT */ | |
679 | memset(&mac, 0, sizeof(struct ethaddr)); | |
680 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
681 | es_get_system_mac(&es->esi, &mac); | |
682 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
683 | ecom_es_rt.size = 1; | |
684 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
685 | attr->ecommunity = | |
686 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
687 | ||
688 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
689 | } | |
690 | ||
342dd0c6 | 691 | /* |
692 | * Build extended communities for EVPN prefix route. | |
693 | */ | |
694 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
695 | struct attr *attr) | |
696 | { | |
697 | struct ecommunity ecom_encap; | |
698 | struct ecommunity ecom_rmac; | |
699 | struct ecommunity_val eval; | |
700 | struct ecommunity_val eval_rmac; | |
701 | bgp_encap_types tnl_type; | |
702 | struct listnode *node, *nnode; | |
703 | struct ecommunity *ecom; | |
704 | struct list *vrf_export_rtl = NULL; | |
705 | ||
706 | /* Encap */ | |
707 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
708 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
709 | encode_encap_extcomm(tnl_type, &eval); | |
710 | ecom_encap.size = 1; | |
d7c0a89a | 711 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 712 | |
713 | /* Add Encap */ | |
714 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
715 | ||
716 | /* Add the export RTs for L3VNI/VRF */ | |
717 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
718 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
719 | attr->ecommunity = | |
720 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 721 | |
722 | /* add the router mac extended community */ | |
723 | if (!is_zero_mac(&attr->rmac)) { | |
724 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
725 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
726 | ecom_rmac.size = 1; | |
727 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
728 | attr->ecommunity = |
729 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 730 | } |
731 | ||
732 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
733 | } | |
734 | ||
128ea8ab | 735 | /* |
1ec31309 | 736 | * Build extended communities for EVPN route. |
737 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
738 | * and ENCAP extended communities are applicable for all routes. | |
739 | * The default gateway extended community and MAC mobility (sticky) extended | |
740 | * community are added as needed based on passed settings - only for type-2 | |
741 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
742 | * added, if present, based on passed settings - only for non-link-local | |
743 | * type-2 routes. | |
128ea8ab | 744 | */ |
7ec156a9 | 745 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 746 | int add_l3_ecomm) |
128ea8ab | 747 | { |
d62a17ae | 748 | struct ecommunity ecom_encap; |
749 | struct ecommunity ecom_sticky; | |
ead40654 | 750 | struct ecommunity ecom_default_gw; |
bc59a672 | 751 | struct ecommunity ecom_rmac; |
68e33151 | 752 | struct ecommunity ecom_na; |
d62a17ae | 753 | struct ecommunity_val eval; |
754 | struct ecommunity_val eval_sticky; | |
ead40654 | 755 | struct ecommunity_val eval_default_gw; |
bc59a672 | 756 | struct ecommunity_val eval_rmac; |
68e33151 CS |
757 | struct ecommunity_val eval_na; |
758 | ||
d62a17ae | 759 | bgp_encap_types tnl_type; |
760 | struct listnode *node, *nnode; | |
761 | struct ecommunity *ecom; | |
d7c0a89a | 762 | uint32_t seqnum; |
7a3e76f1 | 763 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 764 | |
d62a17ae | 765 | /* Encap */ |
766 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
767 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
768 | encode_encap_extcomm(tnl_type, &eval); | |
769 | ecom_encap.size = 1; | |
d7c0a89a | 770 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 771 | |
d62a17ae | 772 | /* Add Encap */ |
773 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 774 | |
7a3e76f1 | 775 | /* Add the export RTs for L2VNI */ |
d62a17ae | 776 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
777 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 778 | |
1ec31309 | 779 | /* Add the export RTs for L3VNI if told to - caller determines |
780 | * when this should be done. | |
523cafc4 | 781 | */ |
1ec31309 | 782 | if (add_l3_ecomm) { |
7ec156a9 MK |
783 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
784 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
785 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
786 | ecom)) | |
996c9314 LB |
787 | attr->ecommunity = ecommunity_merge( |
788 | attr->ecommunity, ecom); | |
7ec156a9 | 789 | } |
f1f8b53c | 790 | } |
7a3e76f1 | 791 | |
1ec31309 | 792 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 793 | if (attr->sticky) { |
794 | seqnum = 0; | |
795 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
796 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
797 | ecom_sticky.size = 1; | |
d7c0a89a | 798 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 799 | attr->ecommunity = |
800 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
801 | } | |
c85c03c7 | 802 | |
1ec31309 | 803 | /* Add RMAC, if told to. */ |
804 | if (add_l3_ecomm) { | |
bc59a672 MK |
805 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
806 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
807 | ecom_rmac.size = 1; | |
808 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
809 | attr->ecommunity = |
810 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
811 | } |
812 | ||
1ec31309 | 813 | /* Add default gateway, if needed. */ |
ead40654 MK |
814 | if (attr->default_gw) { |
815 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
816 | encode_default_gw_extcomm(&eval_default_gw); | |
817 | ecom_default_gw.size = 1; | |
818 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
819 | attr->ecommunity = |
820 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
821 | } |
822 | ||
68e33151 CS |
823 | if (attr->router_flag) { |
824 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
825 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
826 | ecom_na.size = 1; | |
827 | ecom_na.val = (uint8_t *)eval_na.val; | |
828 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
829 | &ecom_na); | |
830 | } | |
831 | ||
d62a17ae | 832 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 833 | } |
834 | ||
835 | /* | |
836 | * Add MAC mobility extended community to attribute. | |
837 | */ | |
d7c0a89a | 838 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 839 | { |
840 | struct ecommunity ecom_tmp; | |
841 | struct ecommunity_val eval; | |
d7c0a89a | 842 | uint8_t *ecom_val_ptr; |
d62a17ae | 843 | int i; |
d7c0a89a | 844 | uint8_t *pnt; |
d62a17ae | 845 | int type = 0; |
846 | int sub_type = 0; | |
847 | ||
848 | /* Build MM */ | |
849 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
850 | ||
851 | /* Find current MM ecommunity */ | |
421bb26a | 852 | ecom_val_ptr = NULL; |
d62a17ae | 853 | |
854 | if (attr->ecommunity) { | |
855 | for (i = 0; i < attr->ecommunity->size; i++) { | |
856 | pnt = attr->ecommunity->val + (i * 8); | |
857 | type = *pnt++; | |
858 | sub_type = *pnt++; | |
859 | ||
860 | if (type == ECOMMUNITY_ENCODE_EVPN | |
861 | && sub_type | |
862 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
863 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
864 | + (i * 8)); | |
d62a17ae | 865 | break; |
866 | } | |
867 | } | |
868 | } | |
869 | ||
870 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
871 | if (ecom_val_ptr) { |
872 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 873 | } |
874 | /* Add MM to existing */ | |
875 | else { | |
876 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
877 | ecom_tmp.size = 1; | |
d7c0a89a | 878 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 879 | |
f9a78910 DS |
880 | if (attr->ecommunity) |
881 | attr->ecommunity = | |
882 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
883 | else | |
884 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 885 | } |
128ea8ab | 886 | } |
887 | ||
888 | /* Install EVPN route into zebra. */ | |
d62a17ae | 889 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
d594a14c | 890 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 891 | { |
d62a17ae | 892 | int ret; |
d594a14c | 893 | uint8_t flags; |
128ea8ab | 894 | |
d594a14c AK |
895 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
896 | flags = 0; | |
897 | if (pi->attr->sticky) | |
898 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
899 | if (pi->attr->default_gw) | |
900 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
901 | if (is_evpn_prefix_ipaddr_v6(p) && | |
902 | pi->attr->router_flag) | |
903 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
904 | ret = bgp_zebra_send_remote_macip( | |
905 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
906 | mac_mobility_seqnum(pi->attr)); | |
907 | } else { | |
d62a17ae | 908 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); |
d594a14c | 909 | } |
128ea8ab | 910 | |
d62a17ae | 911 | return ret; |
128ea8ab | 912 | } |
913 | ||
914 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 915 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
916 | struct prefix_evpn *p, | |
917 | struct in_addr remote_vtep_ip) | |
128ea8ab | 918 | { |
d62a17ae | 919 | int ret; |
128ea8ab | 920 | |
d62a17ae | 921 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
922 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 923 | 0, 0, 0); |
d62a17ae | 924 | else |
925 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 926 | |
d62a17ae | 927 | return ret; |
128ea8ab | 928 | } |
929 | ||
930 | /* | |
931 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
932 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
933 | * from peers. | |
934 | */ | |
d62a17ae | 935 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
936 | struct bgp_node *rn, | |
4b7e6066 | 937 | struct bgp_path_info *old_local) |
128ea8ab | 938 | { |
d62a17ae | 939 | struct bgp_node *global_rn; |
40381db7 | 940 | struct bgp_path_info *pi; |
d62a17ae | 941 | afi_t afi = AFI_L2VPN; |
942 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 943 | |
d62a17ae | 944 | /* Locate route node in the global EVPN routing table. Note that |
945 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
946 | * L3VPN routes. | |
947 | */ | |
948 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
949 | (struct prefix *)&rn->p, &vpn->prd); | |
950 | if (global_rn) { | |
951 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 952 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 953 | |
d62a17ae | 954 | /* Schedule for processing - withdraws to peers happen from |
955 | * this table. | |
956 | */ | |
40381db7 | 957 | if (pi) |
d62a17ae | 958 | bgp_process(bgp, global_rn, afi, safi); |
959 | bgp_unlock_node(global_rn); | |
960 | } | |
128ea8ab | 961 | |
d62a17ae | 962 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 963 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 964 | } |
965 | ||
50f74cf1 | 966 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
967 | { | |
968 | struct in_addr *ip; | |
969 | ||
970 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
971 | if (!ip) | |
972 | return NULL; | |
973 | ||
974 | ip->s_addr = vtep.s_addr; | |
975 | return ip; | |
976 | } | |
977 | ||
978 | static void es_vtep_free(struct in_addr *ip) | |
979 | { | |
980 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
981 | } | |
982 | ||
983 | /* check if VTEP is already part of the list */ | |
984 | static int is_vtep_present_in_list(struct list *list, | |
985 | struct in_addr vtep) | |
986 | { | |
987 | struct listnode *node = NULL; | |
988 | struct in_addr *tmp; | |
989 | ||
990 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
991 | if (tmp->s_addr == vtep.s_addr) | |
992 | return 1; | |
993 | } | |
994 | return 0; | |
995 | } | |
996 | ||
2bb9eff4 DS |
997 | /* |
998 | * Best path for ES route was changed, | |
999 | * update the list of VTEPs for this ES | |
1000 | */ | |
50f74cf1 | 1001 | static int evpn_es_install_vtep(struct bgp *bgp, |
1002 | struct evpnes *es, | |
1003 | struct prefix_evpn *p, | |
1004 | struct in_addr rvtep) | |
1005 | { | |
1006 | struct in_addr *vtep_ip; | |
1007 | ||
1008 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1009 | return 0; | |
1010 | ||
1011 | ||
1012 | vtep_ip = es_vtep_new(rvtep); | |
1013 | if (vtep_ip) | |
1014 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1015 | return 0; | |
1016 | } | |
1017 | ||
2bb9eff4 DS |
1018 | /* |
1019 | * Best path for ES route was changed, | |
1020 | * update the list of VTEPs for this ES | |
1021 | */ | |
50f74cf1 | 1022 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1023 | struct evpnes *es, | |
1024 | struct prefix_evpn *p, | |
1025 | struct in_addr rvtep) | |
1026 | { | |
1027 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1028 | struct in_addr *tmp; | |
1029 | ||
1030 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1031 | if (tmp->s_addr == rvtep.s_addr) { | |
1032 | es_vtep_free(tmp); | |
1033 | node_to_del = node; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | if (node_to_del) | |
1038 | list_delete_node(es->vtep_list, node_to_del); | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * Calculate the best path for a ES(type-4) route. | |
1045 | */ | |
1046 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1047 | struct evpnes *es, | |
1048 | struct bgp_node *rn) | |
1049 | { | |
1050 | int ret = 0; | |
1051 | afi_t afi = AFI_L2VPN; | |
1052 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1053 | struct bgp_path_info *old_select; /* old best */ |
1054 | struct bgp_path_info *new_select; /* new best */ | |
1055 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1056 | |
1057 | /* Compute the best path. */ | |
1058 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1059 | &old_and_new, afi, safi); | |
1060 | old_select = old_and_new.old; | |
1061 | new_select = old_and_new.new; | |
1062 | ||
2bb9eff4 DS |
1063 | /* |
1064 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1065 | * updated |
1066 | */ | |
1067 | if (old_select && old_select == new_select | |
1068 | && old_select->type == ZEBRA_ROUTE_BGP | |
1069 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1070 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1071 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1072 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1073 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1074 | ret = evpn_es_install_vtep(bgp, es, | |
1075 | (struct prefix_evpn *)&rn->p, | |
1076 | old_select->attr->nexthop); | |
1077 | } | |
1defdda8 | 1078 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1079 | bgp_zebra_clear_route_change_flags(rn); |
1080 | return ret; | |
1081 | } | |
1082 | ||
1083 | /* If the user did a "clear" this flag will be set */ | |
1084 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1085 | ||
2bb9eff4 DS |
1086 | /* |
1087 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1088 | * into the zebra RIB. |
1089 | */ | |
1090 | if (old_select || new_select) | |
1091 | bgp_bump_version(rn); | |
1092 | ||
1093 | if (old_select) | |
18ee8310 | 1094 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1095 | if (new_select) { |
18ee8310 DS |
1096 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1097 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1098 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1099 | } |
1100 | ||
1101 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1102 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1103 | ret = evpn_es_install_vtep(bgp, es, | |
1104 | (struct prefix_evpn *)&rn->p, | |
1105 | new_select->attr->nexthop); | |
1106 | } else { | |
1107 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1108 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1109 | ret = evpn_es_uninstall_vtep( |
1110 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1111 | old_select->attr->nexthop); | |
50f74cf1 | 1112 | } |
1113 | ||
1114 | /* Clear any route change flags. */ | |
1115 | bgp_zebra_clear_route_change_flags(rn); | |
1116 | ||
18ee8310 | 1117 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1118 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1119 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1120 | |
1121 | return ret; | |
1122 | } | |
1123 | ||
128ea8ab | 1124 | /* |
1125 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1126 | * if appropriate. | |
1127 | */ | |
d62a17ae | 1128 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1129 | struct bgp_node *rn) | |
1130 | { | |
4b7e6066 DS |
1131 | struct bgp_path_info *old_select, *new_select; |
1132 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1133 | afi_t afi = AFI_L2VPN; |
1134 | safi_t safi = SAFI_EVPN; | |
1135 | int ret = 0; | |
1136 | ||
1137 | /* Compute the best path. */ | |
1138 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1139 | afi, safi); | |
1140 | old_select = old_and_new.old; | |
1141 | new_select = old_and_new.new; | |
1142 | ||
1143 | /* If the best path hasn't changed - see if there is still something to | |
1144 | * update | |
1145 | * to zebra RIB. | |
1146 | */ | |
1147 | if (old_select && old_select == new_select | |
1148 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1149 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1150 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1151 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1152 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1153 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1154 | ret = evpn_zebra_install( |
1155 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1156 | old_select); |
1defdda8 | 1157 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1158 | bgp_zebra_clear_route_change_flags(rn); |
1159 | return ret; | |
1160 | } | |
1161 | ||
1162 | /* If the user did a "clear" this flag will be set */ | |
1163 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1164 | ||
1165 | /* bestpath has changed; update relevant fields and install or uninstall | |
1166 | * into the zebra RIB. | |
1167 | */ | |
1168 | if (old_select || new_select) | |
1169 | bgp_bump_version(rn); | |
1170 | ||
1171 | if (old_select) | |
18ee8310 | 1172 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1173 | if (new_select) { |
18ee8310 DS |
1174 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1175 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1176 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1177 | } |
1178 | ||
1179 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1180 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1181 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1182 | new_select); |
1183 | ||
d62a17ae | 1184 | /* If an old best existed and it was a "local" route, the only |
1185 | * reason | |
1186 | * it would be supplanted is due to MAC mobility procedures. So, | |
1187 | * we | |
1188 | * need to do an implicit delete and withdraw that route from | |
1189 | * peers. | |
1190 | */ | |
1191 | if (old_select && old_select->peer == bgp->peer_self | |
1192 | && old_select->type == ZEBRA_ROUTE_BGP | |
1193 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1194 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1195 | } else { | |
1196 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1197 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1198 | ret = evpn_zebra_uninstall(bgp, vpn, |
1199 | (struct prefix_evpn *)&rn->p, | |
1200 | old_select->attr->nexthop); | |
1201 | } | |
1202 | ||
1203 | /* Clear any route change flags. */ | |
1204 | bgp_zebra_clear_route_change_flags(rn); | |
1205 | ||
18ee8310 | 1206 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1207 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1208 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1209 | |
1210 | return ret; | |
128ea8ab | 1211 | } |
1212 | ||
ead40654 MK |
1213 | /* |
1214 | * Return true if the local ri for this rn is of type gateway mac | |
1215 | */ | |
1216 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1217 | { | |
40381db7 DS |
1218 | struct bgp_path_info *tmp_pi = NULL; |
1219 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1220 | |
40381db7 | 1221 | local_pi = NULL; |
6f94b685 DS |
1222 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1223 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1224 | if (tmp_pi->peer == bgp->peer_self |
1225 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1226 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1227 | local_pi = tmp_pi; | |
ead40654 MK |
1228 | } |
1229 | ||
40381db7 | 1230 | if (!local_pi) |
ead40654 MK |
1231 | return 0; |
1232 | ||
40381db7 | 1233 | return local_pi->attr->default_gw; |
ead40654 MK |
1234 | } |
1235 | ||
c85c03c7 | 1236 | |
1237 | /* | |
1238 | * Return true if the local ri for this rn has sticky set | |
1239 | */ | |
d62a17ae | 1240 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1241 | { |
40381db7 DS |
1242 | struct bgp_path_info *tmp_pi; |
1243 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1244 | |
40381db7 | 1245 | local_pi = NULL; |
6f94b685 DS |
1246 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1247 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1248 | if (tmp_pi->peer == bgp->peer_self |
1249 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1250 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1251 | local_pi = tmp_pi; | |
d62a17ae | 1252 | } |
c85c03c7 | 1253 | |
40381db7 | 1254 | if (!local_pi) |
d62a17ae | 1255 | return 0; |
c85c03c7 | 1256 | |
40381db7 | 1257 | return local_pi->attr->sticky; |
c85c03c7 | 1258 | } |
1259 | ||
50f74cf1 | 1260 | /* |
1261 | * create or update EVPN type4 route entry. | |
1262 | * This could be in the ES table or the global table. | |
1263 | * TODO: handle remote ES (type4) routes as well | |
1264 | */ | |
4b7e6066 | 1265 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1266 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1267 | struct bgp_node *rn, struct attr *attr, |
1268 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1269 | int *route_changed) |
1270 | { | |
1271 | char buf[ESI_STR_LEN]; | |
1272 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1273 | struct bgp_path_info *tmp_pi = NULL; |
1274 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1275 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1276 | struct attr *attr_new = NULL; |
1277 | struct prefix_evpn *evp = NULL; | |
1278 | ||
1279 | *ri = NULL; | |
1280 | *route_changed = 1; | |
1281 | evp = (struct prefix_evpn *)&rn->p; | |
1282 | ||
1283 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1284 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1285 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1286 | if (tmp_pi->peer == bgp->peer_self |
1287 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1288 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1289 | local_pi = tmp_pi; | |
1290 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1291 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1292 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1293 | remote_pi = tmp_pi; | |
50f74cf1 | 1294 | } |
1295 | ||
6f94b685 | 1296 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1297 | * An ES route has esi + vtep_ip as the key, |
1298 | * We shouldn't see the same route from any other vtep. | |
1299 | */ | |
40381db7 | 1300 | if (remote_pi) { |
af4c2728 | 1301 | flog_err( |
e50f7cfd | 1302 | EC_BGP_ES_INVALID, |
14454c9f DS |
1303 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1304 | bgp->vrf_id, | |
1305 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1306 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1307 | return -1; |
1308 | } | |
1309 | ||
40381db7 | 1310 | if (!local_pi && !add) |
50f74cf1 | 1311 | return 0; |
1312 | ||
1313 | /* create or update the entry */ | |
40381db7 | 1314 | if (!local_pi) { |
50f74cf1 | 1315 | |
1316 | /* Add or update attribute to hash */ | |
1317 | attr_new = bgp_attr_intern(attr); | |
1318 | ||
1319 | /* Create new route with its attribute. */ | |
40381db7 DS |
1320 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1321 | bgp->peer_self, attr_new, rn); | |
1322 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1323 | |
1324 | /* add the newly created path to the route-node */ | |
40381db7 | 1325 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1326 | } else { |
40381db7 DS |
1327 | tmp_pi = local_pi; |
1328 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1329 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1330 | *route_changed = 0; |
1331 | else { | |
1332 | /* The attribute has changed. | |
1333 | * Add (or update) attribute to hash. */ | |
1334 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1335 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1336 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1337 | |
1338 | /* Restore route, if needed. */ | |
40381db7 DS |
1339 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1340 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1341 | |
1342 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1343 | bgp_attr_unintern(&tmp_pi->attr); |
1344 | tmp_pi->attr = attr_new; | |
1345 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1346 | } |
1347 | } | |
1348 | ||
1349 | /* Return back the route entry. */ | |
40381db7 | 1350 | *ri = tmp_pi; |
50f74cf1 | 1351 | return 0; |
1352 | } | |
1353 | ||
1354 | /* update evpn es (type-4) route */ | |
1355 | static int update_evpn_type4_route(struct bgp *bgp, | |
1356 | struct evpnes *es, | |
1357 | struct prefix_evpn *p) | |
1358 | { | |
1359 | int ret = 0; | |
1360 | int route_changed = 0; | |
1361 | char buf[ESI_STR_LEN]; | |
1362 | char buf1[INET6_ADDRSTRLEN]; | |
1363 | afi_t afi = AFI_L2VPN; | |
1364 | safi_t safi = SAFI_EVPN; | |
1365 | struct attr attr; | |
1366 | struct attr *attr_new = NULL; | |
1367 | struct bgp_node *rn = NULL; | |
40381db7 | 1368 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1369 | |
1370 | memset(&attr, 0, sizeof(struct attr)); | |
1371 | ||
1372 | /* Build path-attribute for this route. */ | |
1373 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1374 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1375 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1376 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1377 | ||
1378 | /* Set up extended community. */ | |
1379 | build_evpn_type4_route_extcomm(es, &attr); | |
1380 | ||
1381 | /* First, create (or fetch) route node within the ESI. */ | |
1382 | /* NOTE: There is no RD here. */ | |
1383 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1384 | ||
1385 | /* Create or update route entry. */ | |
40381db7 DS |
1386 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1387 | &pi, &route_changed); | |
50f74cf1 | 1388 | if (ret != 0) { |
1c50c1c0 QY |
1389 | flog_err(EC_BGP_ES_INVALID, |
1390 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1391 | bgp->vrf_id, | |
1392 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1393 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1394 | } |
1395 | ||
40381db7 DS |
1396 | assert(pi); |
1397 | attr_new = pi->attr; | |
50f74cf1 | 1398 | |
1399 | /* Perform route selection; | |
1400 | * this is just to set the flags correctly | |
1401 | * as local route in the ES always wins. | |
1402 | */ | |
1403 | evpn_es_route_select_install(bgp, es, rn); | |
1404 | bgp_unlock_node(rn); | |
1405 | ||
1406 | /* If this is a new route or some attribute has changed, export the | |
1407 | * route to the global table. The route will be advertised to peers | |
1408 | * from there. Note that this table is a 2-level tree (RD-level + | |
1409 | * Prefix-level) similar to L3VPN routes. | |
1410 | */ | |
1411 | if (route_changed) { | |
40381db7 | 1412 | struct bgp_path_info *global_pi; |
50f74cf1 | 1413 | |
1414 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1415 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1416 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1417 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1418 | |
1419 | /* Schedule for processing and unlock node. */ | |
1420 | bgp_process(bgp, rn, afi, safi); | |
1421 | bgp_unlock_node(rn); | |
1422 | } | |
1423 | ||
1424 | /* Unintern temporary. */ | |
1425 | aspath_unintern(&attr.aspath); | |
1426 | return 0; | |
1427 | } | |
1428 | ||
342dd0c6 | 1429 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1430 | struct bgp *bgp_vrf, afi_t afi, | |
1431 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1432 | struct attr *attr, int *route_changed) |
342dd0c6 | 1433 | { |
1434 | struct attr *attr_new = NULL; | |
40381db7 | 1435 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1436 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1437 | struct bgp_path_info *local_pi = NULL; |
1438 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1439 | |
5424b7ba | 1440 | *route_changed = 0; |
342dd0c6 | 1441 | /* locate the local route entry if any */ |
6f94b685 DS |
1442 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1443 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1444 | if (tmp_pi->peer == bgp_def->peer_self |
1445 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1446 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1447 | local_pi = tmp_pi; | |
342dd0c6 | 1448 | } |
1449 | ||
2bb9eff4 | 1450 | /* |
0437e105 | 1451 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1452 | * Otherwise see if route attr has changed |
523cafc4 | 1453 | */ |
40381db7 | 1454 | if (!local_pi) { |
342dd0c6 | 1455 | |
5424b7ba MK |
1456 | /* route has changed as this is the first entry */ |
1457 | *route_changed = 1; | |
1458 | ||
342dd0c6 | 1459 | /* Add (or update) attribute to hash. */ |
1460 | attr_new = bgp_attr_intern(attr); | |
1461 | ||
1462 | /* create the route info from attribute */ | |
40381db7 | 1463 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
342dd0c6 | 1464 | bgp_def->peer_self, attr_new, rn); |
40381db7 | 1465 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1466 | |
b57ba6d2 | 1467 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1468 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1469 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1470 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1471 | pi->extra->num_labels = 1; | |
342dd0c6 | 1472 | |
1473 | /* add the route entry to route node*/ | |
40381db7 | 1474 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1475 | } else { |
1476 | ||
40381db7 DS |
1477 | tmp_pi = local_pi; |
1478 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1479 | |
1480 | /* attribute changed */ | |
1481 | *route_changed = 1; | |
1482 | ||
342dd0c6 | 1483 | /* The attribute has changed. */ |
1484 | /* Add (or update) attribute to hash. */ | |
1485 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1486 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1487 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1488 | |
1489 | /* Restore route, if needed. */ | |
40381db7 DS |
1490 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1491 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1492 | |
1493 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1494 | bgp_attr_unintern(&tmp_pi->attr); |
1495 | tmp_pi->attr = attr_new; | |
1496 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1497 | } |
1498 | } | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1503 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1504 | struct attr *src_attr) | |
342dd0c6 | 1505 | { |
1506 | afi_t afi = AFI_L2VPN; | |
1507 | safi_t safi = SAFI_EVPN; | |
1508 | struct attr attr; | |
1509 | struct bgp_node *rn = NULL; | |
1510 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1511 | int route_changed = 0; |
342dd0c6 | 1512 | |
1513 | bgp_def = bgp_get_default(); | |
1514 | if (!bgp_def) | |
faafdfa8 | 1515 | return 0; |
342dd0c6 | 1516 | |
2f69f6d3 | 1517 | /* Build path attribute for this route - use the source attr, if |
1518 | * present, else treat as locally originated. | |
1519 | */ | |
1520 | if (src_attr) | |
1521 | bgp_attr_dup(&attr, src_attr); | |
1522 | else { | |
1523 | memset(&attr, 0, sizeof(struct attr)); | |
1524 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1525 | } | |
1526 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1527 | attr.nexthop = bgp_vrf->originator_ip; |
1528 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1529 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1530 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1531 | ||
1532 | /* Setup RT and encap extended community */ | |
1533 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1534 | ||
1535 | /* get the route node in global table */ | |
1536 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1537 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1538 | assert(rn); |
1539 | ||
1540 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1541 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1542 | &route_changed); | |
342dd0c6 | 1543 | |
1544 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1545 | if (route_changed) { |
1546 | bgp_process(bgp_def, rn, afi, safi); | |
1547 | bgp_unlock_node(rn); | |
1548 | } | |
342dd0c6 | 1549 | |
1550 | /* uninten temporary */ | |
5ee65f6f | 1551 | if (!src_attr) |
1552 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1553 | return 0; |
1554 | } | |
1555 | ||
128ea8ab | 1556 | /* |
1557 | * Create or update EVPN route entry. This could be in the VNI route table | |
1558 | * or the global route table. | |
1559 | */ | |
d62a17ae | 1560 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1561 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1562 | struct attr *attr, int add, |
40381db7 | 1563 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1564 | uint32_t seq) |
d62a17ae | 1565 | { |
40381db7 DS |
1566 | struct bgp_path_info *tmp_pi; |
1567 | struct bgp_path_info *local_pi; | |
d62a17ae | 1568 | struct attr *attr_new; |
b57ba6d2 | 1569 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1570 | uint32_t num_labels = 1; |
d62a17ae | 1571 | int route_change = 1; |
d7c0a89a | 1572 | uint8_t sticky = 0; |
b57ba6d2 | 1573 | struct prefix_evpn *evp; |
d62a17ae | 1574 | |
40381db7 | 1575 | *pi = NULL; |
b57ba6d2 MK |
1576 | evp = (struct prefix_evpn *)&rn->p; |
1577 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1578 | |
f07e1c99 | 1579 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1580 | local_pi = NULL; |
6f94b685 DS |
1581 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1582 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1583 | if (tmp_pi->peer == bgp->peer_self |
1584 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1585 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1586 | local_pi = tmp_pi; | |
d62a17ae | 1587 | } |
1588 | ||
1589 | /* If route doesn't exist already, create a new one, if told to. | |
1590 | * Otherwise act based on whether the attributes of the route have | |
1591 | * changed or not. | |
1592 | */ | |
40381db7 | 1593 | if (!local_pi && !add) |
d62a17ae | 1594 | return 0; |
1595 | ||
f07e1c99 | 1596 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1597 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1598 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1599 | |
40381db7 | 1600 | if (!local_pi) { |
d62a17ae | 1601 | /* Add (or update) attribute to hash. */ |
1602 | attr_new = bgp_attr_intern(attr); | |
1603 | ||
1604 | /* Extract MAC mobility sequence number, if any. */ | |
1605 | attr_new->mm_seqnum = | |
1606 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1607 | attr_new->sticky = sticky; | |
1608 | ||
1609 | /* Create new route with its attribute. */ | |
40381db7 | 1610 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1611 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1612 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1613 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1614 | |
1615 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1616 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1617 | |
1618 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1619 | * Only attach second label if we are advertising two labels for | |
1620 | * type-2 routes. | |
1621 | */ | |
996c9314 LB |
1622 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1623 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1624 | vni_t l3vni; |
1625 | ||
1626 | l3vni = bgpevpn_get_l3vni(vpn); | |
1627 | if (l3vni) { | |
1628 | vni2label(l3vni, &label[1]); | |
1629 | num_labels++; | |
1630 | } | |
1631 | } | |
d62a17ae | 1632 | |
40381db7 DS |
1633 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1634 | tmp_pi->extra->num_labels = num_labels; | |
1635 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1636 | } else { |
40381db7 DS |
1637 | tmp_pi = local_pi; |
1638 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1639 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1640 | route_change = 0; |
1641 | else { | |
c48d9f5f MK |
1642 | /* |
1643 | * The attributes have changed, type-2 routes needs to | |
1644 | * be advertised with right labels. | |
1645 | */ | |
1646 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1647 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1648 | && CHECK_FLAG(vpn->flags, | |
1649 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1650 | vni_t l3vni; |
1651 | ||
1652 | l3vni = bgpevpn_get_l3vni(vpn); | |
1653 | if (l3vni) { | |
1654 | vni2label(l3vni, &label[1]); | |
1655 | num_labels++; | |
1656 | } | |
1657 | } | |
40381db7 DS |
1658 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1659 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1660 | |
d62a17ae | 1661 | /* The attribute has changed. */ |
1662 | /* Add (or update) attribute to hash. */ | |
1663 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1664 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1665 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1666 | |
f07e1c99 | 1667 | /* Extract MAC mobility sequence number, if any. */ |
1668 | attr_new->mm_seqnum = | |
1669 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1670 | attr_new->sticky = sticky; | |
1671 | ||
d62a17ae | 1672 | /* Restore route, if needed. */ |
40381db7 DS |
1673 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1674 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1675 | |
1676 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1677 | bgp_attr_unintern(&tmp_pi->attr); |
1678 | tmp_pi->attr = attr_new; | |
1679 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1680 | } |
1681 | } | |
1682 | ||
1683 | /* Return back the route entry. */ | |
40381db7 | 1684 | *pi = tmp_pi; |
d62a17ae | 1685 | return route_change; |
128ea8ab | 1686 | } |
1687 | ||
ec0ab544 AK |
1688 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1689 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1690 | { | |
1691 | struct bgp_path_info *tmp_ri; | |
1692 | struct bgp_path_info *curr_select = NULL; | |
1693 | ||
1694 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1695 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1696 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1697 | curr_select = tmp_ri; | |
1698 | break; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1703 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1704 | evpn_zebra_install(bgp, vpn, | |
1705 | (struct prefix_evpn *)&rn->p, | |
1706 | curr_select); | |
1707 | } | |
1708 | ||
6d8c603a AK |
1709 | /* |
1710 | * If the local route was not selected evict it and tell zebra to re-add | |
1711 | * the best remote dest. | |
1712 | * | |
1713 | * Typically a local path added by zebra is expected to be selected as | |
1714 | * best. In which case when a remote path wins as best (later) | |
1715 | * evpn_route_select_install itself evicts the older-local-best path. | |
1716 | * | |
1717 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1718 | * is possible that the local path is no longer the "older" best path. | |
1719 | * It is a path that was never designated as best and hence requires | |
1720 | * additional handling to prevent bgp from injecting and holding on to a | |
1721 | * non-best local path. | |
1722 | */ | |
1723 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1724 | struct bgpevpn *vpn, | |
1725 | struct bgp_node *rn, | |
9a8897aa | 1726 | struct bgp_path_info *local_pi) |
6d8c603a | 1727 | { |
6d8c603a AK |
1728 | char buf[PREFIX_STRLEN]; |
1729 | ||
6d8c603a AK |
1730 | /* local path was not picked as the winner; kick it out */ |
1731 | if (bgp_debug_zebra(NULL)) { | |
1732 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1733 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1734 | } | |
6d8c603a AK |
1735 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1736 | bgp_path_info_reap(rn, local_pi); | |
1737 | ||
1738 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1739 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1740 | } |
1741 | ||
128ea8ab | 1742 | /* |
1743 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1744 | * and schedule for processing. | |
1745 | */ | |
d62a17ae | 1746 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1747 | struct prefix_evpn *p, uint8_t flags, |
1748 | uint32_t seq) | |
128ea8ab | 1749 | { |
d62a17ae | 1750 | struct bgp_node *rn; |
1751 | struct attr attr; | |
1752 | struct attr *attr_new; | |
1ec31309 | 1753 | int add_l3_ecomm = 0; |
40381db7 | 1754 | struct bgp_path_info *pi; |
d62a17ae | 1755 | afi_t afi = AFI_L2VPN; |
1756 | safi_t safi = SAFI_EVPN; | |
1757 | int route_change; | |
128ea8ab | 1758 | |
d62a17ae | 1759 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1760 | |
d62a17ae | 1761 | /* Build path-attribute for this route. */ |
1762 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1763 | attr.nexthop = vpn->originator_ip; | |
1764 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1765 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1766 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1767 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1768 | attr.router_flag = CHECK_FLAG(flags, |
1769 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1770 | |
1771 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1772 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1773 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1774 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1775 | } | |
be41eb68 | 1776 | |
1ec31309 | 1777 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1778 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1779 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1780 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1781 | |
1ec31309 | 1782 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1783 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1784 | * these routes. | |
1785 | */ | |
1786 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1787 | (is_evpn_prefix_ipaddr_v4(p) || |
1788 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1789 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1790 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1791 | add_l3_ecomm = 1; |
1792 | ||
1793 | /* Set up extended community. */ | |
1794 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1795 | |
d62a17ae | 1796 | /* First, create (or fetch) route node within the VNI. */ |
1797 | /* NOTE: There is no RD here. */ | |
1798 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1799 | |
d62a17ae | 1800 | /* Create or update route entry. */ |
1801 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1802 | 1, &pi, flags, seq); |
1803 | assert(pi); | |
1804 | attr_new = pi->attr; | |
128ea8ab | 1805 | |
6d8c603a AK |
1806 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1807 | bgp_path_info_lock(pi); | |
d62a17ae | 1808 | /* Perform route selection; this is just to set the flags correctly |
1809 | * as local route in the VNI always wins. | |
1810 | */ | |
1811 | evpn_route_select_install(bgp, vpn, rn); | |
6d8c603a | 1812 | /* |
9a8897aa AK |
1813 | * If the new local route was not selected evict it and tell zebra |
1814 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1815 | * routes. | |
6d8c603a | 1816 | */ |
9a8897aa AK |
1817 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1818 | route_change = 0; | |
1819 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1820 | } | |
6d8c603a AK |
1821 | bgp_path_info_unlock(pi); |
1822 | ||
d62a17ae | 1823 | bgp_unlock_node(rn); |
128ea8ab | 1824 | |
d62a17ae | 1825 | /* If this is a new route or some attribute has changed, export the |
1826 | * route to the global table. The route will be advertised to peers | |
1827 | * from there. Note that this table is a 2-level tree (RD-level + | |
1828 | * Prefix-level) similar to L3VPN routes. | |
1829 | */ | |
1830 | if (route_change) { | |
40381db7 | 1831 | struct bgp_path_info *global_pi; |
128ea8ab | 1832 | |
d62a17ae | 1833 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1834 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1835 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1836 | &global_pi, flags, seq); |
128ea8ab | 1837 | |
d62a17ae | 1838 | /* Schedule for processing and unlock node. */ |
1839 | bgp_process(bgp, rn, afi, safi); | |
1840 | bgp_unlock_node(rn); | |
1841 | } | |
128ea8ab | 1842 | |
d62a17ae | 1843 | /* Unintern temporary. */ |
1844 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1845 | |
d62a17ae | 1846 | return 0; |
128ea8ab | 1847 | } |
1848 | ||
50f74cf1 | 1849 | /* |
1850 | * Delete EVPN route entry. | |
1851 | * The entry can be in ESI/VNI table or the global table. | |
1852 | */ | |
4b7e6066 | 1853 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1854 | struct bgp_node *rn, |
40381db7 | 1855 | struct bgp_path_info **pi) |
342dd0c6 | 1856 | { |
40381db7 | 1857 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1858 | |
40381db7 | 1859 | *pi = NULL; |
342dd0c6 | 1860 | |
50f74cf1 | 1861 | /* Now, find matching route. */ |
6f94b685 DS |
1862 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1863 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1864 | if (tmp_pi->peer == bgp->peer_self |
1865 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1866 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1867 | break; |
1868 | ||
40381db7 | 1869 | *pi = tmp_pi; |
342dd0c6 | 1870 | |
1871 | /* Mark route for delete. */ | |
40381db7 DS |
1872 | if (tmp_pi) |
1873 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1874 | } |
1875 | ||
50f74cf1 | 1876 | |
1877 | ||
1878 | /* Delete EVPN ES (type-4) route */ | |
1879 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1880 | struct evpnes *es, | |
1881 | struct prefix_evpn *p) | |
1882 | { | |
1883 | afi_t afi = AFI_L2VPN; | |
1884 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1885 | struct bgp_path_info *pi; |
50f74cf1 | 1886 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1887 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1888 | ||
1889 | /* First, locate the route node within the ESI. | |
1890 | * If it doesn't exist, ther is nothing to do. | |
1891 | * Note: there is no RD here. | |
1892 | */ | |
1893 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1894 | if (!rn) |
50f74cf1 | 1895 | return 0; |
1896 | ||
1897 | /* Next, locate route node in the global EVPN routing table. | |
1898 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1899 | */ | |
1900 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1901 | (struct prefix *)p, &es->prd); | |
1902 | if (global_rn) { | |
1903 | ||
1904 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1905 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1906 | |
1907 | /* Schedule for processing - withdraws to peers happen from | |
1908 | * this table. | |
1909 | */ | |
40381db7 | 1910 | if (pi) |
50f74cf1 | 1911 | bgp_process(bgp, global_rn, afi, safi); |
1912 | bgp_unlock_node(global_rn); | |
1913 | } | |
1914 | ||
1915 | /* | |
1916 | * Delete route entry in the ESI route table. | |
1917 | * This can just be removed. | |
1918 | */ | |
40381db7 DS |
1919 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1920 | if (pi) | |
1921 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1922 | bgp_unlock_node(rn); |
1923 | return 0; | |
1924 | } | |
1925 | ||
342dd0c6 | 1926 | /* Delete EVPN type5 route */ |
996c9314 | 1927 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1928 | { |
1929 | afi_t afi = AFI_L2VPN; | |
1930 | safi_t safi = SAFI_EVPN; | |
1931 | struct bgp_node *rn = NULL; | |
40381db7 | 1932 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1933 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
1934 | ||
1935 | bgp_def = bgp_get_default(); | |
1936 | if (!bgp_def) | |
faafdfa8 | 1937 | return 0; |
342dd0c6 | 1938 | |
1939 | /* locate the global route entry for this type-5 prefix */ | |
1940 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1941 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1942 | if (!rn) | |
1943 | return 0; | |
1944 | ||
40381db7 DS |
1945 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &pi); |
1946 | if (pi) | |
342dd0c6 | 1947 | bgp_process(bgp_def, rn, afi, safi); |
1948 | bgp_unlock_node(rn); | |
1949 | return 0; | |
1950 | } | |
1951 | ||
128ea8ab | 1952 | /* |
1953 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1954 | * schedule for processing. | |
1955 | */ | |
d62a17ae | 1956 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1957 | struct prefix_evpn *p) | |
1958 | { | |
1959 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1960 | struct bgp_path_info *pi; |
d62a17ae | 1961 | afi_t afi = AFI_L2VPN; |
1962 | safi_t safi = SAFI_EVPN; | |
1963 | ||
1964 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1965 | * there | |
1966 | * is nothing further to do. | |
1967 | */ | |
1968 | /* NOTE: There is no RD here. */ | |
1969 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1970 | if (!rn) | |
1971 | return 0; | |
1972 | ||
1973 | /* Next, locate route node in the global EVPN routing table. Note that | |
1974 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1975 | * L3VPN routes. | |
1976 | */ | |
1977 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1978 | (struct prefix *)p, &vpn->prd); | |
1979 | if (global_rn) { | |
1980 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1981 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 1982 | |
1983 | /* Schedule for processing - withdraws to peers happen from | |
1984 | * this table. | |
1985 | */ | |
40381db7 | 1986 | if (pi) |
d62a17ae | 1987 | bgp_process(bgp, global_rn, afi, safi); |
1988 | bgp_unlock_node(global_rn); | |
1989 | } | |
1990 | ||
1991 | /* Delete route entry in the VNI route table. This can just be removed. | |
1992 | */ | |
40381db7 | 1993 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 1994 | if (pi) { |
40381db7 | 1995 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
1996 | evpn_route_select_install(bgp, vpn, rn); |
1997 | } | |
d62a17ae | 1998 | bgp_unlock_node(rn); |
1999 | ||
2000 | return 0; | |
128ea8ab | 2001 | } |
2002 | ||
2003 | /* | |
2004 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2005 | * be scheduled for advertise to peers. | |
2006 | */ | |
d62a17ae | 2007 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2008 | { | |
2009 | afi_t afi; | |
2010 | safi_t safi; | |
2011 | struct bgp_node *rn; | |
40381db7 | 2012 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2013 | struct attr attr; |
d62a17ae | 2014 | struct attr *attr_new; |
f07e1c99 | 2015 | uint32_t seq; |
1ec31309 | 2016 | int add_l3_ecomm = 0; |
d62a17ae | 2017 | |
2018 | afi = AFI_L2VPN; | |
2019 | safi = SAFI_EVPN; | |
d62a17ae | 2020 | |
2021 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2022 | * routes updated, update corresponding entry in the global table too. | |
2023 | */ | |
2024 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2025 | rn = bgp_route_next(rn)) { | |
2026 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2027 | struct bgp_node *rd_rn; | |
40381db7 | 2028 | struct bgp_path_info *global_pi; |
d62a17ae | 2029 | |
2030 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2031 | continue; | |
2032 | ||
f07e1c99 | 2033 | /* Identify local route. */ |
6f94b685 DS |
2034 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2035 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2036 | if (tmp_pi->peer == bgp->peer_self |
2037 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2038 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2039 | break; |
7ec156a9 | 2040 | } |
d62a17ae | 2041 | |
40381db7 | 2042 | if (!tmp_pi) |
d62a17ae | 2043 | continue; |
2044 | ||
f07e1c99 | 2045 | /* |
2046 | * Build attribute per local route as the MAC mobility and | |
2047 | * some other values could differ for different routes. The | |
2048 | * attributes will be shared in the hash table. | |
2049 | */ | |
2050 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2051 | attr.nexthop = vpn->originator_ip; | |
2052 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2053 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2054 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
2055 | ||
2056 | if (evpn_route_is_sticky(bgp, rn)) | |
2057 | attr.sticky = 1; | |
2058 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2059 | attr.default_gw = 1; | |
2060 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2061 | attr.router_flag = 1; | |
2062 | } | |
2063 | ||
2064 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2065 | * using L3 VNI for type-2 routes also. | |
2066 | */ | |
2067 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2068 | !IN6_IS_ADDR_LINKLOCAL( |
2069 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2070 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2071 | bgpevpn_get_l3vni(vpn)) | |
2072 | add_l3_ecomm = 1; | |
2073 | ||
2074 | /* Set up extended community. */ | |
2075 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2076 | ||
40381db7 | 2077 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2078 | |
2079 | /* Update the route entry. */ | |
40381db7 DS |
2080 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2081 | 0, seq); | |
f07e1c99 | 2082 | |
d62a17ae | 2083 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2084 | * correctly as local route in the VNI always wins. |
d62a17ae | 2085 | */ |
2086 | evpn_route_select_install(bgp, vpn, rn); | |
2087 | ||
40381db7 | 2088 | attr_new = pi->attr; |
d62a17ae | 2089 | |
2090 | /* Update route in global routing table. */ | |
2091 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2092 | (struct prefix *)evp, &vpn->prd); | |
2093 | assert(rd_rn); | |
2094 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2095 | &global_pi, 0, |
f07e1c99 | 2096 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2097 | |
2098 | /* Schedule for processing and unlock node. */ | |
2099 | bgp_process(bgp, rd_rn, afi, safi); | |
2100 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2101 | |
f07e1c99 | 2102 | /* Unintern temporary. */ |
2103 | aspath_unintern(&attr.aspath); | |
2104 | ||
2105 | } | |
d62a17ae | 2106 | |
2107 | return 0; | |
128ea8ab | 2108 | } |
2109 | ||
2110 | /* | |
2111 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2112 | * global routing table. These are also scheduled for withdraw from peers. | |
2113 | */ | |
d62a17ae | 2114 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2115 | { |
d62a17ae | 2116 | afi_t afi; |
2117 | safi_t safi; | |
2118 | struct bgp_node *rdrn, *rn; | |
2119 | struct bgp_table *table; | |
40381db7 | 2120 | struct bgp_path_info *pi; |
128ea8ab | 2121 | |
d62a17ae | 2122 | afi = AFI_L2VPN; |
2123 | safi = SAFI_EVPN; | |
128ea8ab | 2124 | |
d62a17ae | 2125 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2126 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2127 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2128 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2129 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2130 | |
d62a17ae | 2131 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2132 | continue; | |
128ea8ab | 2133 | |
40381db7 DS |
2134 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2135 | if (pi) | |
d62a17ae | 2136 | bgp_process(bgp, rn, afi, safi); |
2137 | } | |
2138 | } | |
128ea8ab | 2139 | |
d62a17ae | 2140 | /* Unlock RD node. */ |
2141 | if (rdrn) | |
2142 | bgp_unlock_node(rdrn); | |
128ea8ab | 2143 | |
d62a17ae | 2144 | return 0; |
128ea8ab | 2145 | } |
2146 | ||
2147 | /* | |
2148 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2149 | * table as well as the per-VNI route table. | |
2150 | */ | |
d62a17ae | 2151 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2152 | { |
d62a17ae | 2153 | afi_t afi; |
2154 | safi_t safi; | |
2155 | struct bgp_node *rn; | |
40381db7 | 2156 | struct bgp_path_info *pi; |
128ea8ab | 2157 | |
d62a17ae | 2158 | afi = AFI_L2VPN; |
2159 | safi = SAFI_EVPN; | |
128ea8ab | 2160 | |
d62a17ae | 2161 | /* First, walk the global route table for this VNI's type-2 local |
2162 | * routes. | |
2163 | * EVPN routes are a 2-level table, first get the RD table. | |
2164 | */ | |
2165 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2166 | |
d62a17ae | 2167 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2168 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2169 | rn = bgp_route_next(rn)) { | |
2170 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2171 | |
d62a17ae | 2172 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2173 | continue; | |
128ea8ab | 2174 | |
40381db7 | 2175 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2176 | |
d62a17ae | 2177 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2178 | if (pi) |
2179 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2180 | } |
128ea8ab | 2181 | |
d62a17ae | 2182 | return 0; |
128ea8ab | 2183 | } |
2184 | ||
50f74cf1 | 2185 | /* |
2186 | * Delete all routes in per ES route-table | |
2187 | */ | |
2188 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2189 | { | |
2190 | struct bgp_node *rn; | |
40381db7 | 2191 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2192 | |
2193 | /* Walk this ES's route table and delete all routes. */ | |
2194 | for (rn = bgp_table_top(es->route_table); rn; | |
2195 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2196 | for (pi = bgp_node_get_bgp_path_info(rn); |
2197 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2198 | bgp_path_info_delete(rn, pi); |
2199 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2200 | } |
2201 | } | |
2202 | ||
2203 | return 0; | |
2204 | } | |
2205 | ||
128ea8ab | 2206 | /* |
2207 | * Delete all routes in the per-VNI route table. | |
2208 | */ | |
d62a17ae | 2209 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2210 | { |
d62a17ae | 2211 | struct bgp_node *rn; |
40381db7 | 2212 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2213 | |
d62a17ae | 2214 | /* Walk this VNI's route table and delete all routes. */ |
2215 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2216 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2217 | for (pi = bgp_node_get_bgp_path_info(rn); |
2218 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2219 | bgp_path_info_delete(rn, pi); |
2220 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2221 | } |
2222 | } | |
128ea8ab | 2223 | |
d62a17ae | 2224 | return 0; |
128ea8ab | 2225 | } |
2226 | ||
2227 | /* | |
2228 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2229 | * export RT getting modified or change to tunnel IP. Note that these | |
2230 | * situations need the route in the per-VNI table as well as the global | |
2231 | * table to be updated (as attributes change). | |
2232 | */ | |
d62a17ae | 2233 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2234 | { |
d62a17ae | 2235 | int ret; |
2236 | struct prefix_evpn p; | |
128ea8ab | 2237 | |
d62a17ae | 2238 | /* Update and advertise the type-3 route (only one) followed by the |
2239 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2240 | * |
2241 | * RT-3 only if doing head-end replication | |
d62a17ae | 2242 | */ |
fd069644 DS |
2243 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
2244 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2245 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2246 | if (ret) | |
2247 | return ret; | |
2248 | } | |
128ea8ab | 2249 | |
d62a17ae | 2250 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2251 | } |
2252 | ||
50f74cf1 | 2253 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2254 | * Also remove all other routes from the per ES table. | |
2255 | * Invoked when ES is deleted. | |
2256 | */ | |
2257 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2258 | { | |
2259 | int ret; | |
2260 | char buf[ESI_STR_LEN]; | |
2261 | struct prefix_evpn p; | |
2262 | ||
2263 | /* Delete and withdraw locally learnt ES route */ | |
2264 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2265 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2266 | if (ret) { | |
e50f7cfd | 2267 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2268 | "%u failed to delete type-4 route for ESI %s", |
2269 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2270 | } |
2271 | ||
2272 | /* Delete all routes from per ES table */ | |
2273 | return delete_all_es_routes(bgp, es); | |
2274 | } | |
2275 | ||
128ea8ab | 2276 | /* |
2277 | * Delete (and withdraw) local routes for specified VNI from the global | |
2278 | * table and per-VNI table. After this, remove all other routes from | |
2279 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2280 | * (advertise-all-vni) being disabled. | |
2281 | */ | |
d62a17ae | 2282 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2283 | { |
d62a17ae | 2284 | int ret; |
2285 | struct prefix_evpn p; | |
128ea8ab | 2286 | |
d62a17ae | 2287 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2288 | * followed by type-3 routes (only one) - for this VNI. | |
2289 | */ | |
2290 | ret = delete_all_type2_routes(bgp, vpn); | |
2291 | if (ret) | |
2292 | return ret; | |
128ea8ab | 2293 | |
d62a17ae | 2294 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2295 | ret = delete_evpn_route(bgp, vpn, &p); | |
2296 | if (ret) | |
2297 | return ret; | |
128ea8ab | 2298 | |
d62a17ae | 2299 | /* Delete all routes from the per-VNI table. */ |
2300 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2301 | } |
2302 | ||
2303 | /* | |
d1911c26 | 2304 | * There is a tunnel endpoint IP address change for this VNI, delete |
2305 | * prior type-3 route (if needed) and update. | |
2306 | * Note: Route re-advertisement happens elsewhere after other processing | |
2307 | * other changes. | |
128ea8ab | 2308 | */ |
d62a17ae | 2309 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2310 | struct in_addr originator_ip) | |
128ea8ab | 2311 | { |
d62a17ae | 2312 | struct prefix_evpn p; |
128ea8ab | 2313 | |
ddd16ed5 MK |
2314 | /* If VNI is not live, we only need to update the originator ip */ |
2315 | if (!is_vni_live(vpn)) { | |
2316 | vpn->originator_ip = originator_ip; | |
2317 | return 0; | |
2318 | } | |
2319 | ||
db0e1937 MK |
2320 | /* Update the tunnel-ip hash */ |
2321 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2322 | bgp_tip_add(bgp, &originator_ip); | |
2323 | ||
2324 | /* filter routes as martian nexthop db has changed */ | |
2325 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2326 | ||
d62a17ae | 2327 | /* Need to withdraw type-3 route as the originator IP is part |
2328 | * of the key. | |
2329 | */ | |
2330 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2331 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2332 | |
d62a17ae | 2333 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2334 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2335 | return 0; |
128ea8ab | 2336 | } |
2337 | ||
50f74cf1 | 2338 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2339 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2340 | struct prefix_evpn *p, |
40381db7 | 2341 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2342 | { |
2343 | int ret = 0; | |
2344 | struct bgp_node *rn = NULL; | |
40381db7 | 2345 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2346 | struct attr *attr_new = NULL; |
2347 | ||
2348 | /* Create (or fetch) route within the VNI. | |
2349 | * NOTE: There is no RD here. | |
2350 | */ | |
2351 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2352 | ||
2353 | /* Check if route entry is already present. */ | |
6f94b685 | 2354 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2355 | if (pi->extra |
2356 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2357 | break; |
2358 | ||
40381db7 | 2359 | if (!pi) { |
50f74cf1 | 2360 | /* Add (or update) attribute to hash. */ |
40381db7 | 2361 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2362 | |
2363 | /* Create new route with its attribute. */ | |
40381db7 DS |
2364 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2365 | parent_pi->peer, attr_new, rn); | |
2366 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2367 | bgp_path_info_extra_get(pi); | |
2368 | pi->extra->parent = parent_pi; | |
2369 | bgp_path_info_add(rn, pi); | |
50f74cf1 | 2370 | } else { |
40381db7 DS |
2371 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2372 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2373 | bgp_unlock_node(rn); |
2374 | return 0; | |
2375 | } | |
2376 | /* The attribute has changed. */ | |
2377 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2378 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2379 | |
2380 | /* Restore route, if needed. */ | |
40381db7 DS |
2381 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2382 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2383 | |
2384 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2385 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2386 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2387 | |
2388 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2389 | bgp_attr_unintern(&pi->attr); |
2390 | pi->attr = attr_new; | |
2391 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2392 | } |
2393 | ||
2394 | /* Perform route selection and update zebra, if required. */ | |
2395 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2396 | return ret; | |
2397 | } | |
2398 | ||
d3135ba3 | 2399 | /* |
2400 | * Install route entry into the VRF routing table and invoke route selection. | |
2401 | */ | |
2402 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2403 | struct prefix_evpn *evp, | |
40381db7 | 2404 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2405 | { |
2406 | struct bgp_node *rn; | |
40381db7 | 2407 | struct bgp_path_info *pi; |
1ec31309 | 2408 | struct attr attr; |
d3135ba3 | 2409 | struct attr *attr_new; |
c4edf708 | 2410 | int ret = 0; |
d3135ba3 | 2411 | struct prefix p; |
2412 | struct prefix *pp = &p; | |
2413 | afi_t afi = 0; | |
2414 | safi_t safi = 0; | |
1eb88002 MK |
2415 | char buf[PREFIX_STRLEN]; |
2416 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2417 | |
2418 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2419 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2420 | |
1eb88002 | 2421 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2422 | zlog_debug( |
2423 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2424 | prefix2str(evp, buf, sizeof(buf)), | |
2425 | prefix2str(pp, buf1, sizeof(buf)), | |
2426 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2427 | } |
2428 | ||
d3135ba3 | 2429 | /* Create (or fetch) route within the VRF. */ |
2430 | /* NOTE: There is no RD here. */ | |
3714a385 | 2431 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2432 | afi = AFI_IP; |
2433 | safi = SAFI_UNICAST; | |
2434 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2435 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2436 | afi = AFI_IP6; |
2437 | safi = SAFI_UNICAST; | |
2438 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2439 | } else | |
2440 | return 0; | |
2441 | ||
1ec31309 | 2442 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2443 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2444 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2445 | * address for the rest of the code to flow through. In the case of IPv4, | |
2446 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2447 | */ |
40381db7 | 2448 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2449 | if (afi == AFI_IP6) |
2450 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2451 | else |
2452 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2453 | |
d3135ba3 | 2454 | /* Check if route entry is already present. */ |
6f94b685 | 2455 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2456 | if (pi->extra |
2457 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2458 | break; |
2459 | ||
40381db7 | 2460 | if (!pi) { |
d3135ba3 | 2461 | /* Add (or update) attribute to hash. */ |
1ec31309 | 2462 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2463 | |
2464 | /* Create new route with its attribute. */ | |
40381db7 DS |
2465 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2466 | parent_pi->peer, attr_new, rn); | |
2467 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2468 | bgp_path_info_extra_get(pi); | |
2469 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2470 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2471 | if (parent_pi->extra) { | |
2472 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2473 | sizeof(pi->extra->label)); | |
2474 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2475 | } |
40381db7 | 2476 | bgp_path_info_add(rn, pi); |
d3135ba3 | 2477 | } else { |
40381db7 DS |
2478 | if (attrhash_cmp(pi->attr, &attr) |
2479 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2480 | bgp_unlock_node(rn); |
2481 | return 0; | |
2482 | } | |
2483 | /* The attribute has changed. */ | |
2484 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2485 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2486 | |
2487 | /* Restore route, if needed. */ | |
40381db7 DS |
2488 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2489 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2490 | |
2491 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2492 | if ((afi == AFI_IP |
2493 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2494 | || (afi == AFI_IP6 | |
2495 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2496 | &attr_new->mp_nexthop_global))) | |
2497 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2498 | |
a9f8ad9f | 2499 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2500 | /* Unintern existing, set to new. */ |
40381db7 DS |
2501 | bgp_attr_unintern(&pi->attr); |
2502 | pi->attr = attr_new; | |
2503 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2504 | } |
2505 | ||
40381db7 | 2506 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2507 | |
d3135ba3 | 2508 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2509 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2510 | |
2511 | return ret; | |
2512 | } | |
2513 | ||
128ea8ab | 2514 | /* |
2515 | * Install route entry into the VNI routing table and invoke route selection. | |
2516 | */ | |
d62a17ae | 2517 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2518 | struct prefix_evpn *p, | |
40381db7 | 2519 | struct bgp_path_info *parent_pi) |
d62a17ae | 2520 | { |
2521 | struct bgp_node *rn; | |
40381db7 | 2522 | struct bgp_path_info *pi; |
d62a17ae | 2523 | struct attr *attr_new; |
2524 | int ret; | |
2525 | ||
2526 | /* Create (or fetch) route within the VNI. */ | |
2527 | /* NOTE: There is no RD here. */ | |
2528 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2529 | ||
2530 | /* Check if route entry is already present. */ | |
6f94b685 | 2531 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2532 | if (pi->extra |
2533 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2534 | break; |
2535 | ||
40381db7 | 2536 | if (!pi) { |
d62a17ae | 2537 | /* Add (or update) attribute to hash. */ |
40381db7 | 2538 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2539 | |
2540 | /* Create new route with its attribute. */ | |
40381db7 DS |
2541 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2542 | parent_pi->peer, attr_new, rn); | |
2543 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2544 | bgp_path_info_extra_get(pi); | |
2545 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2546 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2547 | if (parent_pi->extra) { | |
2548 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2549 | sizeof(pi->extra->label)); | |
2550 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2551 | } |
40381db7 | 2552 | bgp_path_info_add(rn, pi); |
d62a17ae | 2553 | } else { |
40381db7 DS |
2554 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2555 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2556 | bgp_unlock_node(rn); |
2557 | return 0; | |
2558 | } | |
2559 | /* The attribute has changed. */ | |
2560 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2561 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2562 | |
50f74cf1 | 2563 | /* Restore route, if needed. */ |
40381db7 DS |
2564 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2565 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2566 | |
2567 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2568 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2569 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2570 | |
2571 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2572 | bgp_attr_unintern(&pi->attr); |
2573 | pi->attr = attr_new; | |
2574 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2575 | } |
2576 | ||
2577 | /* Perform route selection and update zebra, if required. */ | |
2578 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2579 | ||
2580 | return ret; | |
2581 | } | |
2582 | ||
2583 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2584 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2585 | struct prefix_evpn *p, |
40381db7 | 2586 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2587 | { |
2588 | int ret; | |
2589 | struct bgp_node *rn; | |
40381db7 | 2590 | struct bgp_path_info *pi; |
50f74cf1 | 2591 | |
2592 | if (!es->route_table) | |
2593 | return 0; | |
2594 | ||
2595 | /* Locate route within the ESI. | |
2596 | * NOTE: There is no RD here. | |
2597 | */ | |
2598 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2599 | if (!rn) | |
2600 | return 0; | |
2601 | ||
2602 | /* Find matching route entry. */ | |
6f94b685 | 2603 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2604 | if (pi->extra |
2605 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2606 | break; |
d62a17ae | 2607 | |
40381db7 | 2608 | if (!pi) |
50f74cf1 | 2609 | return 0; |
d62a17ae | 2610 | |
50f74cf1 | 2611 | /* Mark entry for deletion */ |
40381db7 | 2612 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2613 | |
2614 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2615 | ret = evpn_es_route_select_install(bgp, es, rn); |
2616 | ||
2617 | /* Unlock route node. */ | |
2618 | bgp_unlock_node(rn); | |
d62a17ae | 2619 | |
2620 | return ret; | |
128ea8ab | 2621 | } |
2622 | ||
d3135ba3 | 2623 | /* |
2624 | * Uninstall route entry from the VRF routing table and send message | |
2625 | * to zebra, if appropriate. | |
2626 | */ | |
2627 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2628 | struct prefix_evpn *evp, | |
40381db7 | 2629 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2630 | { |
2631 | struct bgp_node *rn; | |
40381db7 | 2632 | struct bgp_path_info *pi; |
c4edf708 | 2633 | int ret = 0; |
d3135ba3 | 2634 | struct prefix p; |
2635 | struct prefix *pp = &p; | |
2636 | afi_t afi = 0; | |
2637 | safi_t safi = 0; | |
1eb88002 MK |
2638 | char buf[PREFIX_STRLEN]; |
2639 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2640 | |
2641 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2642 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2643 | |
1eb88002 | 2644 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2645 | zlog_debug( |
2646 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2647 | prefix2str(evp, buf, sizeof(buf)), | |
2648 | prefix2str(pp, buf1, sizeof(buf)), | |
2649 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2650 | } |
2651 | ||
d3135ba3 | 2652 | /* Locate route within the VRF. */ |
2653 | /* NOTE: There is no RD here. */ | |
3714a385 | 2654 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2655 | afi = AFI_IP; |
2656 | safi = SAFI_UNICAST; | |
2657 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2658 | } else { | |
2659 | afi = AFI_IP6; | |
2660 | safi = SAFI_UNICAST; | |
2661 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2662 | } | |
2663 | ||
2664 | if (!rn) | |
2665 | return 0; | |
2666 | ||
2667 | /* Find matching route entry. */ | |
6f94b685 | 2668 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2669 | if (pi->extra |
2670 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2671 | break; |
2672 | ||
40381db7 | 2673 | if (!pi) |
d3135ba3 | 2674 | return 0; |
2675 | ||
40381db7 | 2676 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2677 | |
d3135ba3 | 2678 | /* Mark entry for deletion */ |
40381db7 | 2679 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2680 | |
2681 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2682 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2683 | |
2684 | /* Unlock route node. */ | |
2685 | bgp_unlock_node(rn); | |
2686 | ||
2687 | return ret; | |
2688 | } | |
2689 | ||
128ea8ab | 2690 | /* |
2691 | * Uninstall route entry from the VNI routing table and send message | |
2692 | * to zebra, if appropriate. | |
2693 | */ | |
d62a17ae | 2694 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2695 | struct prefix_evpn *p, | |
40381db7 | 2696 | struct bgp_path_info *parent_pi) |
128ea8ab | 2697 | { |
d62a17ae | 2698 | struct bgp_node *rn; |
40381db7 | 2699 | struct bgp_path_info *pi; |
d62a17ae | 2700 | int ret; |
128ea8ab | 2701 | |
d62a17ae | 2702 | /* Locate route within the VNI. */ |
2703 | /* NOTE: There is no RD here. */ | |
2704 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2705 | if (!rn) | |
2706 | return 0; | |
128ea8ab | 2707 | |
d62a17ae | 2708 | /* Find matching route entry. */ |
6f94b685 | 2709 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2710 | if (pi->extra |
2711 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2712 | break; |
128ea8ab | 2713 | |
40381db7 | 2714 | if (!pi) |
d62a17ae | 2715 | return 0; |
128ea8ab | 2716 | |
d62a17ae | 2717 | /* Mark entry for deletion */ |
40381db7 | 2718 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2719 | |
d62a17ae | 2720 | /* Perform route selection and update zebra, if required. */ |
2721 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2722 | |
d62a17ae | 2723 | /* Unlock route node. */ |
2724 | bgp_unlock_node(rn); | |
128ea8ab | 2725 | |
d62a17ae | 2726 | return ret; |
128ea8ab | 2727 | } |
2728 | ||
50f74cf1 | 2729 | /* |
2730 | * Given a prefix, see if it belongs to ES. | |
2731 | */ | |
2732 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2733 | struct evpnes *es) | |
2734 | { | |
2735 | /* if not an ES route return false */ | |
2736 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2737 | return 0; | |
2738 | ||
2739 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2740 | return 1; | |
2741 | ||
2742 | return 0; | |
2743 | } | |
2744 | ||
5ba238b7 MK |
2745 | /* |
2746 | * Given a route entry and a VRF, see if this route entry should be | |
2747 | * imported into the VRF i.e., RTs match. | |
2748 | */ | |
4b7e6066 | 2749 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2750 | struct bgp_path_info *pi) |
5ba238b7 | 2751 | { |
40381db7 | 2752 | struct attr *attr = pi->attr; |
5ba238b7 MK |
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; | |
5ba238b7 MK |
2771 | struct ecommunity_val *eval; |
2772 | struct ecommunity_val eval_tmp; | |
2773 | struct vrf_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_vrf_import_rt(eval); | |
5d9cbca2 | 2786 | if (irt) |
5ba238b7 MK |
2787 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
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_vrf_import_rt(&eval_tmp); | |
2803 | } | |
5d9cbca2 | 2804 | if (irt) |
5ba238b7 MK |
2805 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2806 | return 1; | |
2807 | } | |
2808 | ||
2809 | return 0; | |
2810 | } | |
2811 | ||
128ea8ab | 2812 | /* |
2813 | * Given a route entry and a VNI, see if this route entry should be | |
2814 | * imported into the VNI i.e., RTs match. | |
2815 | */ | |
d62a17ae | 2816 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2817 | struct bgp_path_info *pi) |
d62a17ae | 2818 | { |
40381db7 | 2819 | struct attr *attr = pi->attr; |
d62a17ae | 2820 | struct ecommunity *ecom; |
2821 | int i; | |
2822 | ||
2823 | assert(attr); | |
2824 | /* Route should have valid RT to be even considered. */ | |
2825 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2826 | return 0; | |
2827 | ||
2828 | ecom = attr->ecommunity; | |
2829 | if (!ecom || !ecom->size) | |
2830 | return 0; | |
2831 | ||
2832 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2833 | * matches, we're done. | |
2834 | */ | |
2835 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2836 | uint8_t *pnt; |
2837 | uint8_t type, sub_type; | |
d62a17ae | 2838 | struct ecommunity_val *eval; |
2839 | struct ecommunity_val eval_tmp; | |
2840 | struct irt_node *irt; | |
2841 | ||
2842 | /* Only deal with RTs */ | |
2843 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2844 | eval = (struct ecommunity_val *)(ecom->val | |
2845 | + (i * ECOMMUNITY_SIZE)); | |
2846 | type = *pnt++; | |
2847 | sub_type = *pnt++; | |
2848 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2849 | continue; | |
2850 | ||
2851 | /* See if this RT matches specified VNIs import RTs */ | |
2852 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2853 | if (irt) |
d62a17ae | 2854 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2855 | return 1; | |
2856 | ||
2857 | /* Also check for non-exact match. In this, we mask out the AS | |
2858 | * and | |
2859 | * only check on the local-admin sub-field. This is to | |
2860 | * facilitate using | |
2861 | * VNI as the RT for EBGP peering too. | |
2862 | */ | |
2863 | irt = NULL; | |
2864 | if (type == ECOMMUNITY_ENCODE_AS | |
2865 | || type == ECOMMUNITY_ENCODE_AS4 | |
2866 | || type == ECOMMUNITY_ENCODE_IP) { | |
2867 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2868 | mask_ecom_global_admin(&eval_tmp, eval); | |
2869 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2870 | } | |
b1ab0dfe | 2871 | if (irt) |
d62a17ae | 2872 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2873 | return 1; | |
2874 | } | |
2875 | ||
2876 | return 0; | |
128ea8ab | 2877 | } |
2878 | ||
50f74cf1 | 2879 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2880 | struct evpnes *es, | |
2881 | int install) | |
2882 | { | |
2883 | int ret; | |
2884 | afi_t afi; | |
2885 | safi_t safi; | |
2886 | char buf[PREFIX_STRLEN]; | |
2887 | char buf1[ESI_STR_LEN]; | |
2888 | struct bgp_node *rd_rn, *rn; | |
2889 | struct bgp_table *table; | |
40381db7 | 2890 | struct bgp_path_info *pi; |
50f74cf1 | 2891 | |
2892 | afi = AFI_L2VPN; | |
2893 | safi = SAFI_EVPN; | |
2894 | ||
2bb9eff4 DS |
2895 | /* |
2896 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2897 | * imported into this VRF. Note that we need to loop through all global |
2898 | * routes to determine which route matches the import rt on vrf | |
2899 | */ | |
2900 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2901 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 2902 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 2903 | if (!table) |
2904 | continue; | |
2905 | ||
2906 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2907 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2908 | ||
6f94b685 DS |
2909 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2910 | pi = pi->next) { | |
2bb9eff4 DS |
2911 | /* |
2912 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2913 | * this ES. |
2914 | */ | |
40381db7 DS |
2915 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2916 | && pi->type == ZEBRA_ROUTE_BGP | |
2917 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2918 | continue; |
2919 | ||
2bb9eff4 DS |
2920 | if (!is_prefix_matching_for_es(evp, es)) |
2921 | continue; | |
50f74cf1 | 2922 | |
2bb9eff4 DS |
2923 | if (install) |
2924 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2925 | bgp, es, evp, pi); |
2bb9eff4 DS |
2926 | else |
2927 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2928 | bgp, es, evp, pi); |
2bb9eff4 DS |
2929 | |
2930 | if (ret) { | |
af4c2728 | 2931 | flog_err( |
e50f7cfd | 2932 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2933 | "Failed to %s EVPN %s route in ESI %s", |
2934 | install ? "install" | |
2935 | : "uninstall", | |
2936 | prefix2str(evp, buf, | |
2937 | sizeof(buf)), | |
2938 | esi_to_str(&es->esi, buf1, | |
2939 | sizeof(buf1))); | |
2940 | return ret; | |
50f74cf1 | 2941 | } |
2942 | } | |
2943 | } | |
2944 | } | |
2945 | return 0; | |
2946 | } | |
2947 | ||
5ba238b7 MK |
2948 | /* |
2949 | * Install or uninstall mac-ip routes are appropriate for this | |
2950 | * particular VRF. | |
2951 | */ | |
996c9314 | 2952 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2953 | { |
2954 | afi_t afi; | |
2955 | safi_t safi; | |
2956 | struct bgp_node *rd_rn, *rn; | |
2957 | struct bgp_table *table; | |
40381db7 | 2958 | struct bgp_path_info *pi; |
5ba238b7 MK |
2959 | int ret; |
2960 | char buf[PREFIX_STRLEN]; | |
2961 | struct bgp *bgp_def = NULL; | |
2962 | ||
2963 | afi = AFI_L2VPN; | |
2964 | safi = SAFI_EVPN; | |
2965 | bgp_def = bgp_get_default(); | |
2966 | if (!bgp_def) | |
2967 | return -1; | |
2968 | ||
2969 | /* Walk entire global routing table and evaluate routes which could be | |
2970 | * imported into this VRF. Note that we need to loop through all global | |
2971 | * routes to determine which route matches the import rt on vrf | |
2972 | */ | |
2973 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2974 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 2975 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
2976 | if (!table) |
2977 | continue; | |
2978 | ||
2979 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2980 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2981 | ||
1eb88002 | 2982 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2983 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2984 | || evp->prefix.route_type | |
2985 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2986 | continue; |
2987 | ||
1eb88002 | 2988 | /* if not a mac+ip route skip this route */ |
3714a385 | 2989 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2990 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2991 | continue; |
2992 | ||
6f94b685 DS |
2993 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2994 | pi = pi->next) { | |
5ba238b7 | 2995 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2996 | * this VRF. |
2997 | */ | |
40381db7 DS |
2998 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2999 | && pi->type == ZEBRA_ROUTE_BGP | |
3000 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3001 | continue; |
3002 | ||
40381db7 | 3003 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
5ba238b7 | 3004 | if (install) |
996c9314 | 3005 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3006 | bgp_vrf, evp, pi); |
5ba238b7 | 3007 | else |
996c9314 | 3008 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3009 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3010 | |
3011 | if (ret) { | |
af4c2728 | 3012 | flog_err( |
e50f7cfd | 3013 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3014 | "Failed to %s EVPN %s route in VRF %s", |
3015 | install ? "install" | |
3016 | : "uninstall", | |
3017 | prefix2str(evp, buf, | |
3018 | sizeof(buf)), | |
996c9314 LB |
3019 | vrf_id_to_name( |
3020 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3021 | return ret; |
3022 | } | |
3023 | } | |
3024 | } | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | return 0; | |
3029 | } | |
3030 | ||
128ea8ab | 3031 | /* |
3032 | * Install or uninstall routes of specified type that are appropriate for this | |
3033 | * particular VNI. | |
3034 | */ | |
d62a17ae | 3035 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3036 | struct bgpevpn *vpn, | |
3037 | bgp_evpn_route_type rtype, | |
3038 | int install) | |
3039 | { | |
0291c246 MK |
3040 | afi_t afi; |
3041 | safi_t safi; | |
3042 | struct bgp_node *rd_rn, *rn; | |
3043 | struct bgp_table *table; | |
40381db7 | 3044 | struct bgp_path_info *pi; |
0291c246 | 3045 | int ret; |
d62a17ae | 3046 | |
3047 | afi = AFI_L2VPN; | |
3048 | safi = SAFI_EVPN; | |
3049 | ||
3050 | /* Walk entire global routing table and evaluate routes which could be | |
3051 | * imported into this VPN. Note that we cannot just look at the routes | |
3052 | * for | |
3053 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3054 | * RD. | |
3055 | */ | |
3056 | /* EVPN routes are a 2-level table. */ | |
3057 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3058 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3059 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3060 | if (!table) |
3061 | continue; | |
3062 | ||
3063 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3064 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3065 | ||
3066 | if (evp->prefix.route_type != rtype) | |
3067 | continue; | |
3068 | ||
6f94b685 DS |
3069 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3070 | pi = pi->next) { | |
d62a17ae | 3071 | /* Consider "valid" remote routes applicable for |
3072 | * this VNI. */ | |
40381db7 DS |
3073 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3074 | && pi->type == ZEBRA_ROUTE_BGP | |
3075 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3076 | continue; |
3077 | ||
40381db7 | 3078 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3079 | if (install) |
3080 | ret = install_evpn_route_entry( | |
40381db7 | 3081 | bgp, vpn, evp, pi); |
d62a17ae | 3082 | else |
3083 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3084 | bgp, vpn, evp, pi); |
d62a17ae | 3085 | |
3086 | if (ret) { | |
af4c2728 | 3087 | flog_err( |
e50f7cfd | 3088 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3089 | "%u: Failed to %s EVPN %s route in VNI %u", |
3090 | bgp->vrf_id, | |
3091 | install ? "install" | |
3092 | : "uninstall", | |
3093 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3094 | ? "MACIP" | |
3095 | : "IMET", | |
3096 | vpn->vni); | |
3097 | return ret; | |
3098 | } | |
3099 | } | |
3100 | } | |
3101 | } | |
3102 | } | |
3103 | ||
3104 | return 0; | |
128ea8ab | 3105 | } |
3106 | ||
50f74cf1 | 3107 | /* Install any existing remote ES routes applicable for this ES into its routing |
3108 | * table. This is invoked when ES comes up. | |
3109 | */ | |
3110 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3111 | { | |
3112 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3113 | } | |
3114 | ||
3115 | ||
5ba238b7 | 3116 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3117 | * is invoked upon l3vni-add or l3vni import rt change |
3118 | */ | |
5ba238b7 MK |
3119 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3120 | { | |
3121 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3122 | return 0; | |
3123 | } | |
3124 | ||
128ea8ab | 3125 | /* |
3126 | * Install any existing remote routes applicable for this VNI into its | |
3127 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3128 | * RT is changed. | |
3129 | */ | |
d62a17ae | 3130 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3131 | { |
d62a17ae | 3132 | int ret; |
128ea8ab | 3133 | |
d62a17ae | 3134 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3135 | * for this VNI. | |
3136 | */ | |
3137 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3138 | 1); | |
3139 | if (ret) | |
3140 | return ret; | |
128ea8ab | 3141 | |
d62a17ae | 3142 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3143 | 1); | |
128ea8ab | 3144 | } |
3145 | ||
5ba238b7 MK |
3146 | /* uninstall routes from l3vni vrf. */ |
3147 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3148 | { | |
3149 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3150 | return 0; | |
3151 | } | |
3152 | ||
90e60aa7 | 3153 | /* |
3154 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3155 | * this is invoked is upon an import RT change. | |
3156 | */ | |
d62a17ae | 3157 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3158 | { |
d62a17ae | 3159 | int ret; |
90e60aa7 | 3160 | |
d62a17ae | 3161 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3162 | * applicable | |
3163 | * for this VNI. | |
3164 | */ | |
3165 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3166 | 0); | |
3167 | if (ret) | |
3168 | return ret; | |
90e60aa7 | 3169 | |
d62a17ae | 3170 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3171 | 0); | |
90e60aa7 | 3172 | } |
3173 | ||
50f74cf1 | 3174 | /* Install or unistall route in ES */ |
3175 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3176 | afi_t afi, safi_t safi, | |
3177 | struct prefix_evpn *evp, | |
40381db7 | 3178 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3179 | { |
3180 | int ret = 0; | |
3181 | char buf[ESI_STR_LEN]; | |
3182 | ||
3183 | if (install) | |
40381db7 | 3184 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3185 | else |
40381db7 | 3186 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3187 | |
3188 | if (ret) { | |
af4c2728 | 3189 | flog_err( |
e50f7cfd | 3190 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3191 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3192 | install ? "install" : "uninstall", "ES", | |
3193 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3194 | return ret; |
3195 | } | |
3196 | return 0; | |
3197 | } | |
3198 | ||
d3135ba3 | 3199 | /* |
3200 | * Install or uninstall route in matching VRFs (list). | |
3201 | */ | |
3202 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3203 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3204 | struct bgp_path_info *pi, |
d3135ba3 | 3205 | struct list *vrfs, int install) |
3206 | { | |
3207 | char buf[PREFIX2STR_BUFFER]; | |
3208 | struct bgp *bgp_vrf; | |
3209 | struct listnode *node, *nnode; | |
3210 | ||
90264d64 | 3211 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3212 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3213 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3214 | return 0; |
3215 | ||
90264d64 | 3216 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3217 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3218 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3219 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3220 | return 0; |
3221 | ||
d3135ba3 | 3222 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3223 | int ret; | |
3224 | ||
3225 | if (install) | |
40381db7 | 3226 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3227 | else |
996c9314 | 3228 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3229 | pi); |
d3135ba3 | 3230 | |
3231 | if (ret) { | |
e50f7cfd | 3232 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3233 | "%u: Failed to %s prefix %s in VRF %s", |
3234 | bgp_def->vrf_id, | |
3235 | install ? "install" : "uninstall", | |
3236 | prefix2str(evp, buf, sizeof(buf)), | |
3237 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3238 | return ret; |
3239 | } | |
3240 | } | |
3241 | ||
3242 | return 0; | |
3243 | } | |
3244 | ||
128ea8ab | 3245 | /* |
3246 | * Install or uninstall route in matching VNIs (list). | |
3247 | */ | |
d62a17ae | 3248 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3249 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3250 | struct bgp_path_info *pi, |
d62a17ae | 3251 | struct list *vnis, int install) |
128ea8ab | 3252 | { |
d62a17ae | 3253 | struct bgpevpn *vpn; |
3254 | struct listnode *node, *nnode; | |
128ea8ab | 3255 | |
d62a17ae | 3256 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3257 | int ret; | |
128ea8ab | 3258 | |
d62a17ae | 3259 | if (!is_vni_live(vpn)) |
3260 | continue; | |
128ea8ab | 3261 | |
d62a17ae | 3262 | if (install) |
40381db7 | 3263 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3264 | else |
40381db7 | 3265 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3266 | |
d62a17ae | 3267 | if (ret) { |
1c50c1c0 QY |
3268 | flog_err(EC_BGP_EVPN_FAIL, |
3269 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3270 | bgp->vrf_id, install ? "install" : "uninstall", | |
3271 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3272 | ? "MACIP" | |
3273 | : "IMET", | |
3274 | vpn->vni); | |
d62a17ae | 3275 | return ret; |
3276 | } | |
3277 | } | |
128ea8ab | 3278 | |
d62a17ae | 3279 | return 0; |
128ea8ab | 3280 | } |
3281 | ||
3282 | /* | |
50f74cf1 | 3283 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3284 | */ |
d62a17ae | 3285 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3286 | struct prefix *p, |
40381db7 | 3287 | struct bgp_path_info *pi, int import) |
d62a17ae | 3288 | { |
3289 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3290 | struct attr *attr = pi->attr; |
d62a17ae | 3291 | struct ecommunity *ecom; |
3292 | int i; | |
3293 | ||
3294 | assert(attr); | |
3295 | ||
50f74cf1 | 3296 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3297 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3298 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3299 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3300 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3301 | return 0; |
3302 | ||
3303 | /* If we don't have Route Target, nothing much to do. */ | |
3304 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3305 | return 0; | |
3306 | ||
3307 | ecom = attr->ecommunity; | |
3308 | if (!ecom || !ecom->size) | |
3309 | return -1; | |
3310 | ||
50f74cf1 | 3311 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3312 | * attached to the route */ | |
d62a17ae | 3313 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3314 | uint8_t *pnt; |
3315 | uint8_t type, sub_type; | |
d62a17ae | 3316 | struct ecommunity_val *eval; |
3317 | struct ecommunity_val eval_tmp; | |
996c9314 | 3318 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3319 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3320 | struct evpnes *es; |
d62a17ae | 3321 | |
3322 | /* Only deal with RTs */ | |
3323 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3324 | eval = (struct ecommunity_val *)(ecom->val | |
3325 | + (i * ECOMMUNITY_SIZE)); | |
3326 | type = *pnt++; | |
3327 | sub_type = *pnt++; | |
3328 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3329 | continue; | |
3330 | ||
50f74cf1 | 3331 | /* |
3332 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3333 | * IMET route is imported into VNI table. | |
3334 | * prefix routes are imported into VRF table. | |
523cafc4 | 3335 | */ |
50f74cf1 | 3336 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3337 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3338 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3339 | |
50f74cf1 | 3340 | irt = lookup_import_rt(bgp, eval); |
3341 | if (irt) | |
40381db7 DS |
3342 | install_uninstall_route_in_vnis( |
3343 | bgp, afi, safi, evp, pi, irt->vnis, | |
3344 | import); | |
50f74cf1 | 3345 | |
3346 | vrf_irt = lookup_vrf_import_rt(eval); | |
3347 | if (vrf_irt) | |
40381db7 DS |
3348 | install_uninstall_route_in_vrfs( |
3349 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3350 | import); | |
50f74cf1 | 3351 | |
3352 | /* Also check for non-exact match. | |
3353 | * In this, we mask out the AS and | |
3354 | * only check on the local-admin sub-field. | |
3355 | * This is to facilitate using | |
3356 | * VNI as the RT for EBGP peering too. | |
3357 | */ | |
3358 | irt = NULL; | |
3359 | vrf_irt = NULL; | |
3360 | if (type == ECOMMUNITY_ENCODE_AS | |
3361 | || type == ECOMMUNITY_ENCODE_AS4 | |
3362 | || type == ECOMMUNITY_ENCODE_IP) { | |
3363 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3364 | mask_ecom_global_admin(&eval_tmp, eval); | |
3365 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3366 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3367 | } | |
3368 | ||
3369 | if (irt) | |
40381db7 DS |
3370 | install_uninstall_route_in_vnis( |
3371 | bgp, afi, safi, evp, pi, irt->vnis, | |
3372 | import); | |
50f74cf1 | 3373 | if (vrf_irt) |
40381db7 DS |
3374 | install_uninstall_route_in_vrfs( |
3375 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3376 | import); | |
50f74cf1 | 3377 | } |
3378 | ||
3379 | /* es route is imported into the es table */ | |
3380 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3381 | ||
3382 | /* we will match based on the entire esi to avoid | |
3383 | * imoort of an es route for esi2 into esi1 | |
3384 | */ | |
3385 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3386 | if (es && is_es_local(es)) | |
40381db7 DS |
3387 | install_uninstall_route_in_es( |
3388 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3389 | } |
d62a17ae | 3390 | } |
3391 | ||
3392 | return 0; | |
128ea8ab | 3393 | } |
3394 | ||
2bb9eff4 DS |
3395 | /* |
3396 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3397 | * routes | |
3398 | */ | |
80b140af MK |
3399 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3400 | { | |
5fd9c12b KA |
3401 | /* Delete ipv4 default route and withdraw from peers */ |
3402 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3403 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3404 | SAFI_UNICAST, false); | |
3405 | ||
80b140af | 3406 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3407 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3408 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3409 | |
5fd9c12b KA |
3410 | /* Delete ipv6 default route and withdraw from peers */ |
3411 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3412 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3413 | SAFI_UNICAST, false); | |
3414 | ||
80b140af | 3415 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3416 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3417 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3418 | } |
3419 | ||
2bb9eff4 DS |
3420 | /* |
3421 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3422 | * routes | |
3423 | */ | |
80b140af MK |
3424 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3425 | { | |
3426 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3427 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3428 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3429 | |
5fd9c12b KA |
3430 | /* update ipv4 default route and withdraw from peers */ |
3431 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3432 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3433 | SAFI_UNICAST, true); | |
3434 | ||
80b140af | 3435 | /* update all ipv6 routes */ |
fdf19f06 MK |
3436 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3437 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3438 | |
3439 | /* update ipv6 default route and withdraw from peers */ | |
3440 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3441 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3442 | SAFI_UNICAST, true); | |
3443 | ||
80b140af MK |
3444 | } |
3445 | ||
676f83b9 | 3446 | /* |
3447 | * update and advertise local routes for a VRF as type-5 routes. | |
3448 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3449 | * done in the global route table using the routes which already exist in the | |
3450 | * VRF routing table | |
3451 | */ | |
80b140af | 3452 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3453 | { |
80b140af MK |
3454 | /* skip if the RD is configured */ |
3455 | if (is_vrf_rd_configured(bgp_vrf)) | |
3456 | return; | |
3457 | ||
3458 | /* derive the RD for the VRF based on new router-id */ | |
3459 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3460 | ||
3461 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3462 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3463 | } |
3464 | ||
3465 | /* | |
3466 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3467 | * This is invoked upon VRF RD change. The processing is done only from global | |
3468 | * table. | |
3469 | */ | |
80b140af | 3470 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3471 | { |
80b140af MK |
3472 | /* skip if the RD is configured */ |
3473 | if (is_vrf_rd_configured(bgp_vrf)) | |
3474 | return; | |
3475 | ||
3476 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3477 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3478 | } |
3479 | ||
90e60aa7 | 3480 | /* |
3481 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3482 | * change. Note that the processing is done only on the global route table | |
3483 | * using routes that already exist in the per-VNI table. | |
3484 | */ | |
d62a17ae | 3485 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3486 | { | |
3487 | struct prefix_evpn p; | |
3488 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3489 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3490 | struct attr *attr; |
3491 | afi_t afi = AFI_L2VPN; | |
3492 | safi_t safi = SAFI_EVPN; | |
3493 | ||
3494 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3495 | * attributes to create and advertise the type-3 route for this VNI | |
3496 | * in the global table. | |
fd069644 DS |
3497 | * |
3498 | * RT-3 only if doing head-end replication | |
d62a17ae | 3499 | */ |
fd069644 DS |
3500 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
3501 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3502 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3503 | if (!rn) /* unexpected */ | |
3504 | return 0; | |
6f94b685 | 3505 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3506 | if (pi->peer == bgp->peer_self && |
3507 | pi->type == ZEBRA_ROUTE_BGP | |
3508 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3509 | break; | |
3510 | if (!pi) /* unexpected */ | |
3511 | return 0; | |
3512 | attr = pi->attr; | |
d62a17ae | 3513 | |
fd069644 DS |
3514 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3515 | (struct prefix *)&p, &vpn->prd); | |
3516 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3517 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3518 | |
fd069644 DS |
3519 | /* Schedule for processing and unlock node. */ |
3520 | bgp_process(bgp, global_rn, afi, safi); | |
3521 | bgp_unlock_node(global_rn); | |
3522 | } | |
d62a17ae | 3523 | |
3524 | /* Now, walk this VNI's route table and use the route and its attribute | |
3525 | * to create and schedule route in global table. | |
3526 | */ | |
3527 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3528 | rn = bgp_route_next(rn)) { | |
3529 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3530 | ||
3531 | /* Identify MAC-IP local routes. */ | |
3532 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3533 | continue; | |
3534 | ||
6f94b685 | 3535 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3536 | if (pi->peer == bgp->peer_self |
3537 | && pi->type == ZEBRA_ROUTE_BGP | |
3538 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3539 | break; |
40381db7 | 3540 | if (!pi) |
d62a17ae | 3541 | continue; |
3542 | ||
3543 | /* Create route in global routing table using this route entry's | |
3544 | * attribute. | |
3545 | */ | |
40381db7 | 3546 | attr = pi->attr; |
d62a17ae | 3547 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3548 | (struct prefix *)evp, &vpn->prd); | |
3549 | assert(global_rn); | |
3550 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3551 | &global_pi, 0, |
f07e1c99 | 3552 | mac_mobility_seqnum(attr)); |
d62a17ae | 3553 | |
3554 | /* Schedule for processing and unlock node. */ | |
3555 | bgp_process(bgp, global_rn, afi, safi); | |
3556 | bgp_unlock_node(global_rn); | |
3557 | } | |
3558 | ||
3559 | return 0; | |
90e60aa7 | 3560 | } |
3561 | ||
3562 | /* | |
3563 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3564 | * table. Invoked upon router-id change. | |
3565 | */ | |
d62a17ae | 3566 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3567 | { |
d62a17ae | 3568 | int ret; |
3569 | struct prefix_evpn p; | |
3570 | struct bgp_node *global_rn; | |
40381db7 | 3571 | struct bgp_path_info *pi; |
d62a17ae | 3572 | afi_t afi = AFI_L2VPN; |
3573 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3574 | |
d62a17ae | 3575 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3576 | * for this VNI - from the global table. | |
3577 | */ | |
3578 | ret = delete_global_type2_routes(bgp, vpn); | |
3579 | if (ret) | |
3580 | return ret; | |
90e60aa7 | 3581 | |
d62a17ae | 3582 | /* Remove type-3 route for this VNI from global table. */ |
3583 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3584 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3585 | (struct prefix *)&p, &vpn->prd); | |
3586 | if (global_rn) { | |
3587 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3588 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3589 | |
d62a17ae | 3590 | /* Schedule for processing - withdraws to peers happen from |
3591 | * this table. | |
3592 | */ | |
40381db7 | 3593 | if (pi) |
d62a17ae | 3594 | bgp_process(bgp, global_rn, afi, safi); |
3595 | bgp_unlock_node(global_rn); | |
3596 | } | |
90e60aa7 | 3597 | |
d62a17ae | 3598 | return 0; |
90e60aa7 | 3599 | } |
3600 | ||
2d48ee25 | 3601 | /* |
3602 | * Handle router-id change. Update and advertise local routes corresponding | |
3603 | * to this VNI from peers. Note that this is invoked after updating the | |
3604 | * router-id. The routes in the per-VNI table are used to create routes in | |
3605 | * the global table and schedule them. | |
3606 | */ | |
d62a17ae | 3607 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3608 | { |
0a1a07cb | 3609 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3610 | |
d62a17ae | 3611 | /* Skip VNIs with configured RD. */ |
3612 | if (is_rd_configured(vpn)) | |
3613 | return; | |
2d48ee25 | 3614 | |
d62a17ae | 3615 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3616 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3617 | } |
3618 | ||
3619 | /* | |
3620 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3621 | * to this VNI from peers. Note that this is invoked prior to updating | |
3622 | * the router-id and is done only on the global route table, the routes | |
3623 | * are needed in the per-VNI table to re-advertise with new router id. | |
3624 | */ | |
d62a17ae | 3625 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3626 | { |
0a1a07cb | 3627 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3628 | |
d62a17ae | 3629 | /* Skip VNIs with configured RD. */ |
3630 | if (is_rd_configured(vpn)) | |
3631 | return; | |
2d48ee25 | 3632 | |
d62a17ae | 3633 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3634 | } |
3635 | ||
fd069644 DS |
3636 | /* |
3637 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3638 | * This is invoked upon flooding mode changing to head-end replication. | |
3639 | */ | |
3640 | static void create_advertise_type3(struct hash_backet *backet, void *data) | |
3641 | { | |
3642 | struct bgpevpn *vpn = backet->data; | |
3643 | struct bgp *bgp = data; | |
3644 | struct prefix_evpn p; | |
3645 | ||
3646 | if (!vpn || !is_vni_live(vpn)) | |
3647 | return; | |
3648 | ||
3649 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3650 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3651 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3652 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3653 | } | |
3654 | ||
3655 | /* | |
3656 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3657 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3658 | */ | |
3659 | static void delete_withdraw_type3(struct hash_backet *backet, void *data) | |
3660 | { | |
3661 | struct bgpevpn *vpn = backet->data; | |
3662 | struct bgp *bgp = data; | |
3663 | struct prefix_evpn p; | |
3664 | ||
3665 | if (!vpn || !is_vni_live(vpn)) | |
3666 | return; | |
3667 | ||
3668 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3669 | delete_evpn_route(bgp, vpn, &p); | |
3670 | } | |
3671 | ||
128ea8ab | 3672 | /* |
3673 | * Process received EVPN type-2 route (advertise or withdraw). | |
3674 | */ | |
d62a17ae | 3675 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3676 | struct attr *attr, uint8_t *pfx, int psize, |
3677 | uint32_t addpath_id) | |
d62a17ae | 3678 | { |
3679 | struct prefix_rd prd; | |
3680 | struct prefix_evpn p; | |
554cd77a | 3681 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3682 | uint8_t ipaddr_len; |
3683 | uint8_t macaddr_len; | |
b57ba6d2 | 3684 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3685 | uint32_t num_labels = 0; |
554cd77a | 3686 | uint32_t eth_tag; |
d62a17ae | 3687 | int ret; |
3688 | ||
3689 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3690 | * additional 3 bytes if there is a second label (VNI): | |
3691 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3692 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3693 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3694 | */ | |
3695 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3696 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3697 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3698 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3699 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3700 | return -1; |
3701 | } | |
3702 | ||
554cd77a VB |
3703 | memset(&evpn, 0, sizeof(evpn)); |
3704 | ||
d62a17ae | 3705 | /* Make prefix_rd */ |
3706 | prd.family = AF_UNSPEC; | |
3707 | prd.prefixlen = 64; | |
3708 | memcpy(&prd.val, pfx, 8); | |
3709 | pfx += 8; | |
3710 | ||
3711 | /* Make EVPN prefix. */ | |
3712 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3713 | p.family = AF_EVPN; |
50f74cf1 | 3714 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3715 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3716 | ||
554cd77a VB |
3717 | /* Copy Ethernet Seg Identifier */ |
3718 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3719 | pfx += ESI_LEN; | |
d62a17ae | 3720 | |
554cd77a VB |
3721 | /* Copy Ethernet Tag */ |
3722 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3723 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3724 | pfx += 4; |
3725 | ||
3726 | /* Get the MAC Addr len */ | |
3727 | macaddr_len = *pfx++; | |
3728 | ||
3729 | /* Get the MAC Addr */ | |
28328ea9 | 3730 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3731 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3732 | pfx += ETH_ALEN; |
d62a17ae | 3733 | } else { |
af4c2728 | 3734 | flog_err( |
e50f7cfd | 3735 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3736 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3737 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3738 | return -1; | |
3739 | } | |
3740 | ||
3741 | ||
3742 | /* Get the IP. */ | |
3743 | ipaddr_len = *pfx++; | |
3744 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3745 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3746 | flog_err( |
e50f7cfd | 3747 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3748 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3749 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3750 | return -1; | |
3751 | } | |
3752 | ||
3753 | if (ipaddr_len) { | |
3754 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3755 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3756 | ? IPADDR_V4 |
3757 | : IPADDR_V6; | |
3714a385 | 3758 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3759 | } |
3760 | pfx += ipaddr_len; | |
3761 | ||
b57ba6d2 MK |
3762 | /* Get the VNI(s). Stored as bytes here. */ |
3763 | num_labels++; | |
3764 | memset(label, 0, sizeof(label)); | |
3765 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3766 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3767 | psize -= (33 + ipaddr_len); |
3768 | /* Do we have a second VNI? */ | |
3769 | if (psize) { | |
3770 | num_labels++; | |
3771 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3772 | /* |
3773 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3774 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3775 | * the next field | |
6b11bd8d | 3776 | */ |
b57ba6d2 | 3777 | } |
d62a17ae | 3778 | |
3779 | /* Process the route. */ | |
3780 | if (attr) | |
3781 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3782 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3783 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3784 | else |
3785 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3786 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3787 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3788 | return ret; |
128ea8ab | 3789 | } |
3790 | ||
3791 | /* | |
3792 | * Process received EVPN type-3 route (advertise or withdraw). | |
3793 | */ | |
d62a17ae | 3794 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3795 | struct attr *attr, uint8_t *pfx, int psize, |
3796 | uint32_t addpath_id) | |
d62a17ae | 3797 | { |
3798 | struct prefix_rd prd; | |
3799 | struct prefix_evpn p; | |
d7c0a89a | 3800 | uint8_t ipaddr_len; |
554cd77a | 3801 | uint32_t eth_tag; |
d62a17ae | 3802 | int ret; |
3803 | ||
3804 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3805 | * IP len (1) and IP (4 or 16). | |
3806 | */ | |
3807 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3808 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3809 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3810 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3811 | return -1; |
3812 | } | |
3813 | ||
7fd077aa | 3814 | /* If PMSI is present, log if it is anything other than IR. |
3815 | * Note: We just simply ignore the values as it is not clear if | |
3816 | * doing anything else is better. | |
3817 | */ | |
3818 | if (attr && | |
3819 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3820 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
ade6974d | 3821 | flog_warn( |
e50f7cfd | 3822 | EC_BGP_EVPN_PMSI_PRESENT, |
ade6974d QY |
3823 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
3824 | peer->bgp->vrf_id, peer->host, | |
3825 | attr->pmsi_tnl_type); | |
7fd077aa | 3826 | } |
3827 | } | |
3828 | ||
d62a17ae | 3829 | /* Make prefix_rd */ |
3830 | prd.family = AF_UNSPEC; | |
3831 | prd.prefixlen = 64; | |
3832 | memcpy(&prd.val, pfx, 8); | |
3833 | pfx += 8; | |
3834 | ||
3835 | /* Make EVPN prefix. */ | |
3836 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3837 | p.family = AF_EVPN; |
50f74cf1 | 3838 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3839 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3840 | ||
554cd77a VB |
3841 | /* Copy Ethernet Tag */ |
3842 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3843 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3844 | pfx += 4; |
3845 | ||
3846 | /* Get the IP. */ | |
3847 | ipaddr_len = *pfx++; | |
3848 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3849 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3850 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3851 | } else { |
af4c2728 | 3852 | flog_err( |
e50f7cfd | 3853 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3854 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3855 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3856 | return -1; | |
3857 | } | |
3858 | ||
3859 | /* Process the route. */ | |
3860 | if (attr) | |
3861 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3862 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3863 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3864 | else |
3865 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3866 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3867 | &prd, NULL, 0, NULL); |
d62a17ae | 3868 | return ret; |
128ea8ab | 3869 | } |
3870 | ||
50f74cf1 | 3871 | /* |
3872 | * Process received EVPN type-4 route (advertise or withdraw). | |
3873 | */ | |
3874 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3875 | struct attr *attr, uint8_t *pfx, int psize, | |
3876 | uint32_t addpath_id) | |
3877 | { | |
3878 | int ret; | |
3879 | esi_t esi; | |
3880 | uint8_t ipaddr_len; | |
3881 | struct in_addr vtep_ip; | |
3882 | struct prefix_rd prd; | |
3883 | struct prefix_evpn p; | |
3884 | ||
3885 | /* Type-4 route should be either 23 or 35 bytes | |
3886 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3887 | */ | |
3888 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3889 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3890 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3891 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3892 | return -1; |
3893 | } | |
3894 | ||
3895 | /* Make prefix_rd */ | |
3896 | prd.family = AF_UNSPEC; | |
3897 | prd.prefixlen = 64; | |
3898 | memcpy(&prd.val, pfx, 8); | |
3899 | pfx += 8; | |
3900 | ||
3901 | /* get the ESI */ | |
3902 | memcpy(&esi, pfx, ESI_BYTES); | |
3903 | pfx += ESI_BYTES; | |
3904 | ||
3905 | ||
3906 | /* Get the IP. */ | |
3907 | ipaddr_len = *pfx++; | |
3908 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3909 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3910 | } else { | |
af4c2728 | 3911 | flog_err( |
e50f7cfd | 3912 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 3913 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3914 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3915 | return -1; | |
3916 | } | |
3917 | ||
3918 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3919 | /* Process the route. */ | |
3920 | if (attr) { | |
3921 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3922 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3923 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3924 | } else { |
50f74cf1 | 3925 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3926 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3927 | &prd, NULL, 0, NULL); | |
3928 | } | |
3929 | return ret; | |
3930 | } | |
3931 | ||
3932 | ||
128ea8ab | 3933 | /* |
3934 | * Process received EVPN type-5 route (advertise or withdraw). | |
3935 | */ | |
d62a17ae | 3936 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3937 | struct attr *attr, uint8_t *pfx, int psize, |
3938 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3939 | { |
3940 | struct prefix_rd prd; | |
3941 | struct prefix_evpn p; | |
3942 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3943 | uint8_t ippfx_len; |
3944 | uint32_t eth_tag; | |
b57ba6d2 | 3945 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3946 | int ret; |
3947 | ||
3948 | /* Type-5 route should be 34 or 58 bytes: | |
3949 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3950 | * GW (4 or 16) and VNI (3). | |
3951 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3952 | */ | |
3953 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3954 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3955 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3956 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3957 | return -1; |
3958 | } | |
3959 | ||
3960 | /* Make prefix_rd */ | |
3961 | prd.family = AF_UNSPEC; | |
3962 | prd.prefixlen = 64; | |
3963 | memcpy(&prd.val, pfx, 8); | |
3964 | pfx += 8; | |
3965 | ||
3966 | /* Make EVPN prefix. */ | |
3967 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3968 | p.family = AF_EVPN; |
50f74cf1 | 3969 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3970 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3971 | ||
3972 | /* Additional information outside of prefix - ESI and GW IP */ | |
3973 | memset(&evpn, 0, sizeof(evpn)); | |
3974 | ||
3975 | /* Fetch ESI */ | |
3976 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3977 | pfx += 10; | |
3978 | ||
3979 | /* Fetch Ethernet Tag. */ | |
3980 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3981 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3982 | pfx += 4; |
3983 | ||
3984 | /* Fetch IP prefix length. */ | |
3985 | ippfx_len = *pfx++; | |
3986 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3987 | flog_err( |
e50f7cfd | 3988 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3989 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3990 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3991 | return -1; | |
3992 | } | |
3714a385 | 3993 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3994 | |
3995 | /* Determine IPv4 or IPv6 prefix */ | |
3996 | /* Since the address and GW are from the same family, this just becomes | |
3997 | * a simple check on the total size. | |
3998 | */ | |
3999 | if (psize == 34) { | |
3714a385 | 4000 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4001 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4002 | pfx += 4; |
4003 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4004 | pfx += 4; | |
d62a17ae | 4005 | } else { |
3714a385 | 4006 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4007 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4008 | pfx += 16; |
4009 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4010 | pfx += 16; | |
d62a17ae | 4011 | } |
4012 | ||
b57ba6d2 MK |
4013 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4014 | memset(&label, 0, sizeof(label)); | |
4015 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4016 | |
4017 | /* | |
4018 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4019 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4020 | * field | |
6b11bd8d | 4021 | */ |
d62a17ae | 4022 | |
4023 | /* Process the route. */ | |
4024 | if (!withdraw) | |
4025 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4026 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4027 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4028 | else |
4029 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4030 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4031 | &prd, &label, 1, &evpn); |
d62a17ae | 4032 | |
4033 | return ret; | |
4034 | } | |
4035 | ||
4036 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4037 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4038 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4039 | { |
4040 | int len; | |
4041 | char temp[16]; | |
4042 | struct evpn_addr *p_evpn_p; | |
4043 | ||
4044 | memset(&temp, 0, 16); | |
b03b8898 | 4045 | if (p->family != AF_EVPN) |
d62a17ae | 4046 | return; |
4047 | p_evpn_p = &(p->u.prefix_evpn); | |
4048 | ||
e9fc2840 | 4049 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4050 | IP and GW-IP have to be both ipv4 or ipv6 |
4051 | */ | |
3714a385 | 4052 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4053 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4054 | else |
e9fc2840 | 4055 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4056 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4057 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4058 | stream_put(s, prd->val, 8); | |
0af35d90 | 4059 | if (attr) |
d62a17ae | 4060 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4061 | else | |
4062 | stream_put(s, &temp, 10); | |
3714a385 | 4063 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4064 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4065 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4066 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4067 | else |
3714a385 | 4068 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4069 | if (attr) { |
3714a385 | 4070 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4071 | stream_put_ipv4(s, |
4072 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4073 | else | |
4074 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4075 | } else { | |
3714a385 | 4076 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4077 | stream_put_ipv4(s, 0); |
4078 | else | |
4079 | stream_put(s, &temp, 16); | |
4080 | } | |
4081 | ||
b57ba6d2 | 4082 | if (num_labels) |
d62a17ae | 4083 | stream_put(s, label, 3); |
4084 | else | |
4085 | stream_put3(s, 0); | |
128ea8ab | 4086 | } |
4087 | ||
4088 | /* | |
4089 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4090 | */ | |
d62a17ae | 4091 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 4092 | { |
d62a17ae | 4093 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 4094 | |
d62a17ae | 4095 | /* Remove EVPN routes and schedule for processing. */ |
4096 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4097 | |
d62a17ae | 4098 | /* Clear "live" flag and see if hash needs to be freed. */ |
4099 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4100 | if (!is_vni_configured(vpn)) | |
4101 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4102 | } |
4103 | ||
4104 | /* | |
4105 | * Free a VNI entry; iterator function called during cleanup. | |
4106 | */ | |
d62a17ae | 4107 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 4108 | { |
0a1a07cb | 4109 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 4110 | |
d62a17ae | 4111 | delete_all_vni_routes(bgp, vpn); |
4112 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4113 | } |
4114 | ||
c581d8b0 MK |
4115 | /* |
4116 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4117 | */ | |
4118 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4119 | { | |
10ebe1ab MK |
4120 | struct bgp *bgp_def = NULL; |
4121 | ||
c581d8b0 | 4122 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4123 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4124 | ||
4125 | /* Map RT to VRF */ | |
4126 | bgp_def = bgp_get_default(); | |
4127 | if (!bgp_def) | |
4128 | return; | |
4129 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4130 | } |
4131 | ||
4132 | /* | |
4133 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4134 | */ | |
4135 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4136 | { | |
4137 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4138 | } | |
4139 | ||
4140 | /* | |
4141 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4142 | */ | |
4143 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4144 | { | |
4145 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4146 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4147 | } | |
4148 | ||
4149 | /* | |
4150 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4151 | */ | |
4152 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4153 | { | |
4154 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4155 | } | |
128ea8ab | 4156 | |
f1f8b53c MK |
4157 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4158 | { | |
4159 | struct bgp *bgp_def = NULL; | |
4160 | struct listnode *node = NULL; | |
4161 | struct bgpevpn *vpn = NULL; | |
4162 | ||
4163 | bgp_def = bgp_get_default(); | |
4164 | if (!bgp_def) | |
4165 | return; | |
4166 | ||
4992b4ae MK |
4167 | /* update all type-5 routes */ |
4168 | update_advertise_vrf_routes(bgp_vrf); | |
4169 | ||
4170 | /* update all type-2 routes */ | |
f1f8b53c MK |
4171 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4172 | update_routes_for_vni(bgp_def, vpn); | |
4173 | } | |
4174 | ||
bf1061d8 VB |
4175 | /* |
4176 | * Handle autort change for a given VNI. | |
4177 | */ | |
4178 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4179 | { | |
4180 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 | 4181 | |
bf1061d8 VB |
4182 | if (!is_import_rt_configured(vpn)) { |
4183 | if (is_vni_live(vpn)) | |
4184 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4185 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4186 | list_delete_all_node(vpn->import_rtl); |
4187 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4188 | if (is_vni_live(vpn)) | |
4189 | bgp_evpn_install_routes(bgp, vpn); | |
4190 | } | |
4191 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4192 | list_delete_all_node(vpn->export_rtl); |
4193 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4194 | if (is_vni_live(vpn)) | |
4195 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4196 | } | |
4197 | } | |
4198 | ||
128ea8ab | 4199 | /* |
4200 | * Public functions. | |
4201 | */ | |
4202 | ||
5424b7ba | 4203 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4204 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4205 | afi_t afi, safi_t safi) |
4206 | { | |
4207 | int ret = 0; | |
4208 | struct prefix_evpn evp; | |
4209 | char buf[PREFIX_STRLEN]; | |
4210 | ||
31310b25 | 4211 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4212 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4213 | if (ret) { | |
af4c2728 | 4214 | flog_err( |
e50f7cfd | 4215 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4216 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4217 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4218 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4219 | } |
4220 | } | |
4221 | ||
342dd0c6 | 4222 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4223 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4224 | { |
4225 | struct bgp_table *table = NULL; | |
4226 | struct bgp_node *rn = NULL; | |
40381db7 | 4227 | struct bgp_path_info *pi; |
342dd0c6 | 4228 | |
053905d2 | 4229 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4230 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4231 | /* Only care about "selected" routes - non-imported. */ | |
4232 | /* TODO: Support for AddPath for EVPN. */ | |
6f94b685 | 4233 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 DS |
4234 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
4235 | && (!pi->extra || !pi->extra->parent)) { | |
25f2ca53 | 4236 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4237 | afi, safi); | |
4238 | break; | |
4239 | } | |
4240 | } | |
4241 | } | |
5424b7ba | 4242 | } |
342dd0c6 | 4243 | |
5fd9c12b KA |
4244 | /* |
4245 | * evpn - enable advertisement of default g/w | |
4246 | */ | |
4247 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4248 | safi_t safi, bool add) | |
4249 | { | |
4250 | struct prefix ip_prefix; | |
4251 | ||
4252 | /* form the default prefix 0.0.0.0/0 */ | |
4253 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4254 | ip_prefix.family = afi2family(afi); | |
4255 | ||
4256 | if (add) { | |
4257 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4258 | NULL, afi, safi); | |
4259 | } else { | |
4260 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4261 | afi, safi); | |
4262 | } | |
4263 | } | |
4264 | ||
4265 | ||
2f69f6d3 | 4266 | /* |
4267 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4268 | * to this function correspond to those of the source IP prefix (best | |
4269 | * path in the case of the attr. In the case of a local prefix (when we | |
4270 | * are advertising local subnets), the src_attr will be NULL. | |
4271 | */ | |
31310b25 | 4272 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4273 | struct attr *src_attr, afi_t afi, |
4274 | safi_t safi) | |
5424b7ba MK |
4275 | { |
4276 | int ret = 0; | |
4277 | struct prefix_evpn evp; | |
4278 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4279 | |
31310b25 | 4280 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4281 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4282 | if (ret) | |
e50f7cfd | 4283 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4284 | "%u: Failed to create type-5 route for prefix %s", |
4285 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4286 | } |
4287 | ||
2f69f6d3 | 4288 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4289 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4290 | * advertisement is enabled. | |
4291 | */ | |
996c9314 LB |
4292 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4293 | safi_t safi) | |
342dd0c6 | 4294 | { |
4295 | struct bgp_table *table = NULL; | |
4296 | struct bgp_node *rn = NULL; | |
40381db7 | 4297 | struct bgp_path_info *pi; |
342dd0c6 | 4298 | |
053905d2 | 4299 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4300 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4301 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4302 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4303 | * TODO: Support for AddPath for EVPN. |
4304 | */ | |
6f94b685 | 4305 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 DS |
4306 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
4307 | && (!pi->extra || !pi->extra->parent)) { | |
53c84f78 MK |
4308 | |
4309 | /* apply the route-map */ | |
4310 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4311 | int ret = 0; | |
4312 | ||
996c9314 LB |
4313 | ret = route_map_apply( |
4314 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4315 | .map, | |
40381db7 | 4316 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4317 | if (ret == RMAP_DENYMATCH) |
4318 | continue; | |
4319 | } | |
996c9314 | 4320 | bgp_evpn_advertise_type5_route( |
40381db7 | 4321 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4322 | break; |
4323 | } | |
4324 | } | |
31310b25 | 4325 | } |
342dd0c6 | 4326 | } |
4327 | ||
996c9314 | 4328 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4329 | { |
4330 | struct listnode *node, *nnode, *node_to_del; | |
4331 | struct ecommunity *ecom, *ecom_auto; | |
4332 | struct ecommunity_val eval; | |
4333 | ||
bf1061d8 VB |
4334 | if (bgp->advertise_autort_rfc8365) |
4335 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4336 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4337 | ||
4338 | ecom_auto = ecommunity_new(); | |
4339 | ecommunity_add_val(ecom_auto, &eval); | |
4340 | node_to_del = NULL; | |
4341 | ||
4342 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4343 | if (ecommunity_match(ecom, ecom_auto)) { | |
4344 | ecommunity_free(&ecom); | |
4345 | node_to_del = node; | |
4346 | } | |
4347 | } | |
4348 | ||
4349 | if (node_to_del) | |
4350 | list_delete_node(rtl, node_to_del); | |
4351 | ||
4352 | ecommunity_free(&ecom_auto); | |
4353 | } | |
4354 | ||
4355 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4356 | struct ecommunity *ecomadd) |
c581d8b0 | 4357 | { |
5ba238b7 MK |
4358 | /* uninstall routes from vrf */ |
4359 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4360 | |
4361 | /* Cleanup the RT to VRF mapping */ | |
4362 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4363 | ||
c581d8b0 MK |
4364 | /* Remove auto generated RT */ |
4365 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4366 | ||
4367 | /* Add the newly configured RT to RT list */ | |
4368 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4369 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4370 | ||
10ebe1ab MK |
4371 | /* map VRF to its RTs */ |
4372 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4373 | ||
5ba238b7 MK |
4374 | /* install routes matching the new VRF */ |
4375 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4376 | } |
4377 | ||
4378 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4379 | struct ecommunity *ecomdel) | |
4380 | { | |
4381 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4382 | struct ecommunity *ecom = NULL; | |
4383 | ||
5ba238b7 MK |
4384 | /* uninstall routes from vrf */ |
4385 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4386 | |
4387 | /* Cleanup the RT to VRF mapping */ | |
4388 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4389 | ||
c581d8b0 MK |
4390 | /* remove the RT from the RT list */ |
4391 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4392 | if (ecommunity_match(ecom, ecomdel)) { | |
4393 | ecommunity_free(&ecom); | |
4394 | node_to_del = node; | |
4395 | break; | |
4396 | } | |
4397 | } | |
4398 | ||
4399 | if (node_to_del) | |
4400 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4401 | ||
b3a4db3d | 4402 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4403 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4404 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4405 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4406 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4407 | } | |
4408 | ||
10ebe1ab MK |
4409 | /* map VRFs to its RTs */ |
4410 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4411 | ||
5ba238b7 MK |
4412 | /* install routes matching this new RT */ |
4413 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4414 | } |
4415 | ||
4416 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4417 | struct ecommunity *ecomadd) | |
4418 | { | |
4419 | /* remove auto-generated RT */ | |
4420 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4421 | ||
4422 | /* Add the new RT to the RT list */ | |
4423 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4424 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4425 | ||
f1f8b53c | 4426 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4427 | } |
4428 | ||
4429 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4430 | struct ecommunity *ecomdel) | |
4431 | { | |
4432 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4433 | struct ecommunity *ecom = NULL; | |
4434 | ||
4435 | /* Remove the RT from the RT list */ | |
4436 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4437 | if (ecommunity_match(ecom, ecomdel)) { | |
4438 | ecommunity_free(&ecom); | |
4439 | node_to_del = node; | |
4440 | break; | |
4441 | } | |
4442 | } | |
4443 | ||
4444 | if (node_to_del) | |
4445 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4446 | ||
1525e99f DS |
4447 | /* |
4448 | * Temporary assert to make SA happy. | |
4449 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4450 | * which means that SA is going to complain about | |
4451 | * the list_isempty call, which doesn't NULL check. | |
4452 | * So until we get this situation cleaned up, here | |
4453 | * we are. | |
4454 | */ | |
4455 | assert(bgp_vrf->vrf_export_rtl); | |
4456 | ||
c581d8b0 | 4457 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4458 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4459 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4460 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4461 | } | |
4462 | ||
f1f8b53c | 4463 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4464 | } |
4465 | ||
2d48ee25 | 4466 | /* |
4467 | * Handle change to BGP router id. This is invoked twice by the change | |
4468 | * handler, first before the router id has been changed and then after | |
4469 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4470 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4471 | * will result in the routes being re-advertised. |
4472 | */ | |
d62a17ae | 4473 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4474 | { |
676f83b9 | 4475 | if (withdraw) { |
4476 | ||
4477 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4478 | stored in the global table for this vrf |
4479 | */ | |
80b140af | 4480 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4481 | |
4482 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4483 | * L2-VNIs |
4484 | */ | |
d62a17ae | 4485 | hash_iterate(bgp->vnihash, |
4486 | (void (*)(struct hash_backet *, | |
4487 | void *))withdraw_router_id_vni, | |
4488 | bgp); | |
676f83b9 | 4489 | } else { |
4490 | ||
4491 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4492 | * RD |
4493 | */ | |
80b140af | 4494 | update_router_id_vrf(bgp); |
676f83b9 | 4495 | |
4496 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4497 | * new RD |
4498 | */ | |
d62a17ae | 4499 | hash_iterate(bgp->vnihash, |
4500 | (void (*)(struct hash_backet *, | |
4501 | void *))update_router_id_vni, | |
4502 | bgp); | |
676f83b9 | 4503 | } |
2d48ee25 | 4504 | } |
4505 | ||
bf1061d8 VB |
4506 | /* |
4507 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4508 | */ | |
4509 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4510 | { | |
4511 | hash_iterate(bgp->vnihash, | |
4512 | (void (*)(struct hash_backet *, | |
4513 | void*))update_autort_vni, | |
4514 | bgp); | |
4515 | } | |
4516 | ||
90e60aa7 | 4517 | /* |
4518 | * Handle change to export RT - update and advertise local routes. | |
4519 | */ | |
d62a17ae | 4520 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4521 | { |
d62a17ae | 4522 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4523 | } |
4524 | ||
996c9314 | 4525 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4526 | { |
4527 | if (withdraw) | |
4528 | delete_withdraw_vrf_routes(bgp_vrf); | |
4529 | else | |
4530 | update_advertise_vrf_routes(bgp_vrf); | |
4531 | } | |
4532 | ||
90e60aa7 | 4533 | /* |
4534 | * Handle change to RD. This is invoked twice by the change handler, | |
4535 | * first before the RD has been changed and then after the RD has | |
4536 | * been changed. The first invocation will result in local routes | |
4537 | * of this VNI being deleted and withdrawn and the next will result | |
4538 | * in the routes being re-advertised. | |
4539 | */ | |
d62a17ae | 4540 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4541 | int withdraw) | |
90e60aa7 | 4542 | { |
d62a17ae | 4543 | if (withdraw) |
4544 | delete_withdraw_vni_routes(bgp, vpn); | |
4545 | else | |
4546 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4547 | } |
4548 | ||
4549 | /* | |
4550 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4551 | */ | |
d62a17ae | 4552 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4553 | { |
d62a17ae | 4554 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4555 | } |
4556 | ||
4557 | /* | |
4558 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4559 | * to Import RT. | |
4560 | */ | |
d62a17ae | 4561 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4562 | { |
d62a17ae | 4563 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4564 | } |
4565 | ||
b16031a2 | 4566 | /* |
b57ba6d2 | 4567 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4568 | */ |
d7c0a89a | 4569 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4570 | int len) |
b16031a2 | 4571 | { |
b57ba6d2 | 4572 | vni_t vni1, vni2; |
b16031a2 | 4573 | |
b57ba6d2 MK |
4574 | vni1 = label2vni(label); |
4575 | if (num_labels == 2) { | |
996c9314 | 4576 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4577 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4578 | } else | |
4579 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4580 | return buf; |
b16031a2 | 4581 | } |
4582 | ||
9c92b5f7 MK |
4583 | /* |
4584 | * Function to convert evpn route to json format. | |
4585 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4586 | */ | |
57f7feb6 | 4587 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4588 | { |
b682f6de | 4589 | char buf1[ETHER_ADDR_STRLEN]; |
4590 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4591 | |
b682f6de | 4592 | if (!json) |
4593 | return; | |
9c92b5f7 | 4594 | |
dff8f48d | 4595 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4596 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4597 | json_object_int_add(json, "ethTag", |
4598 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4599 | json_object_int_add(json, "ipLen", |
3714a385 | 4600 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4601 | ? IPV4_MAX_BITLEN |
4602 | : IPV6_MAX_BITLEN); | |
b682f6de | 4603 | json_object_string_add(json, "ip", |
3714a385 | 4604 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4605 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4606 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4607 | json_object_int_add(json, "routeType", |
4608 | p->prefix.route_type); | |
3714a385 | 4609 | json_object_int_add(json, "ethTag", |
4610 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4611 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4612 | json_object_string_add(json, "mac", | |
3714a385 | 4613 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4614 | buf1, |
4615 | sizeof(buf1))); | |
dff8f48d | 4616 | } else { |
d7c0a89a | 4617 | uint8_t family; |
dff8f48d | 4618 | |
3714a385 | 4619 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4620 | : AF_INET6; |
dff8f48d | 4621 | |
b682f6de | 4622 | json_object_int_add(json, "routeType", |
57f7feb6 | 4623 | p->prefix.route_type); |
3714a385 | 4624 | json_object_int_add(json, "ethTag", |
4625 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4626 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4627 | json_object_string_add(json, "mac", |
3714a385 | 4628 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4629 | buf1, |
4630 | sizeof(buf1))); | |
b682f6de | 4631 | json_object_int_add(json, "ipLen", |
3714a385 | 4632 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4633 | ? IPV4_MAX_BITLEN |
4634 | : IPV6_MAX_BITLEN); | |
4635 | json_object_string_add( | |
4636 | json, "ip", | |
3714a385 | 4637 | inet_ntop(family, |
4638 | &p->prefix.macip_addr.ip.ip.addr, | |
4639 | buf2, | |
57f7feb6 | 4640 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4641 | } |
4642 | } else { | |
4643 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4644 | } | |
9c92b5f7 MK |
4645 | } |
4646 | ||
520d5d76 | 4647 | /* |
4648 | * Function to convert evpn route to string. | |
4649 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4650 | */ | |
d62a17ae | 4651 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4652 | { | |
4653 | char buf1[ETHER_ADDR_STRLEN]; | |
4654 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4655 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4656 | |
4657 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4658 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4659 | p->prefix.imet_addr.eth_tag, |
4660 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4661 | : IPV6_MAX_BITLEN, |
3714a385 | 4662 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4663 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4664 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4665 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4666 | p->prefix.route_type, | |
3714a385 | 4667 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4668 | 8 * ETH_ALEN, |
3714a385 | 4669 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4670 | sizeof(buf1))); |
4671 | else { | |
d7c0a89a | 4672 | uint8_t family; |
d62a17ae | 4673 | |
3714a385 | 4674 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4675 | : AF_INET6; |
554cd77a VB |
4676 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4677 | p->prefix.route_type, | |
3714a385 | 4678 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4679 | 8 * ETH_ALEN, |
3714a385 | 4680 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4681 | sizeof(buf1)), |
4682 | family == AF_INET ? IPV4_MAX_BITLEN | |
4683 | : IPV6_MAX_BITLEN, | |
3714a385 | 4684 | inet_ntop(family, |
4685 | &p->prefix.macip_addr.ip.ip.addr, | |
4686 | buf2, | |
d62a17ae | 4687 | PREFIX2STR_BUFFER)); |
4688 | } | |
342dd0c6 | 4689 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4690 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4691 | p->prefix.route_type, | |
3714a385 | 4692 | p->prefix.prefix_addr.eth_tag, |
4693 | p->prefix.prefix_addr.ip_prefix_length, | |
4694 | is_evpn_prefix_ipaddr_v4(p) | |
4695 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4696 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4697 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4698 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4699 | p->prefix.route_type, | |
4700 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4701 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4702 | : IPV6_MAX_BITLEN, | |
4703 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4704 | } else { |
b03b8898 | 4705 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4706 | snprintf(buf, len, "(unsupported route type %d)", |
4707 | p->prefix.route_type); | |
d62a17ae | 4708 | } |
4709 | ||
4710 | return (buf); | |
520d5d76 | 4711 | } |
4712 | ||
128ea8ab | 4713 | /* |
4714 | * Encode EVPN prefix in Update (MP_REACH) | |
4715 | */ | |
d62a17ae | 4716 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4717 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4718 | uint32_t num_labels, struct attr *attr, |
4719 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4720 | { |
4721 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4722 | int len, ipa_len = 0; |
d62a17ae | 4723 | |
4724 | if (addpath_encode) | |
4725 | stream_putl(s, addpath_tx_id); | |
4726 | ||
4727 | /* Route type */ | |
4728 | stream_putc(s, evp->prefix.route_type); | |
4729 | ||
4730 | switch (evp->prefix.route_type) { | |
4731 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4732 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4733 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4734 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4735 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4736 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4737 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4738 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4739 | len += 3; | |
4740 | stream_putc(s, len); | |
996c9314 | 4741 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4742 | if (attr) |
4743 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4744 | else | |
4745 | stream_put(s, 0, 10); | |
3714a385 | 4746 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4747 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4748 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4749 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4750 | if (ipa_len) /* IP */ | |
4751 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4752 | ipa_len); | |
b57ba6d2 MK |
4753 | /* 1st label is the L2 VNI */ |
4754 | stream_put(s, label, BGP_LABEL_BYTES); | |
4755 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4756 | if (ipa_len && num_labels > 1) | |
996c9314 | 4757 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4758 | break; |
4759 | ||
4760 | case BGP_EVPN_IMET_ROUTE: | |
4761 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4762 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4763 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4764 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4765 | /* Originating Router's IP Addr */ | |
3714a385 | 4766 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4767 | break; |
4768 | ||
50f74cf1 | 4769 | case BGP_EVPN_ES_ROUTE: |
4770 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4771 | stream_put(s, prd->val, 8); /* RD */ | |
4772 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4773 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4774 | /* VTEP IP */ |
4775 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4776 | break; |
4777 | ||
d62a17ae | 4778 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4779 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4780 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4781 | break; |
4782 | ||
4783 | default: | |
4784 | break; | |
4785 | } | |
4786 | } | |
4787 | ||
4788 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4789 | struct bgp_nlri *packet, int withdraw) | |
4790 | { | |
d7c0a89a QY |
4791 | uint8_t *pnt; |
4792 | uint8_t *lim; | |
d62a17ae | 4793 | afi_t afi; |
4794 | safi_t safi; | |
d7c0a89a | 4795 | uint32_t addpath_id; |
d62a17ae | 4796 | int addpath_encoded; |
4797 | int psize = 0; | |
d7c0a89a | 4798 | uint8_t rtype; |
d62a17ae | 4799 | struct prefix p; |
4800 | ||
d62a17ae | 4801 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4802 | pnt = packet->nlri; | |
4803 | lim = pnt + packet->length; | |
4804 | afi = packet->afi; | |
4805 | safi = packet->safi; | |
4806 | addpath_id = 0; | |
4807 | ||
4808 | addpath_encoded = | |
4809 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4810 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4811 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4812 | ||
4813 | for (; pnt < lim; pnt += psize) { | |
4814 | /* Clear prefix structure. */ | |
4815 | memset(&p, 0, sizeof(struct prefix)); | |
4816 | ||
4817 | /* Deal with path-id if AddPath is supported. */ | |
4818 | if (addpath_encoded) { | |
4819 | /* When packet overflow occurs return immediately. */ | |
4820 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4821 | return -1; | |
4822 | ||
4823 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4824 | pnt += BGP_ADDPATH_ID_LEN; | |
4825 | } | |
4826 | ||
4827 | /* All EVPN NLRI types start with type and length. */ | |
4828 | if (pnt + 2 > lim) | |
4829 | return -1; | |
4830 | ||
4831 | rtype = *pnt++; | |
3f54c705 | 4832 | psize = *pnt++; |
d62a17ae | 4833 | |
4834 | /* When packet overflow occur return immediately. */ | |
4835 | if (pnt + psize > lim) | |
4836 | return -1; | |
4837 | ||
4838 | switch (rtype) { | |
4839 | case BGP_EVPN_MAC_IP_ROUTE: | |
4840 | if (process_type2_route(peer, afi, safi, | |
4841 | withdraw ? NULL : attr, pnt, | |
4842 | psize, addpath_id)) { | |
af4c2728 | 4843 | flog_err( |
e50f7cfd | 4844 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4845 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4846 | peer->bgp->vrf_id, peer->host, psize); | |
4847 | return -1; | |
4848 | } | |
4849 | break; | |
4850 | ||
4851 | case BGP_EVPN_IMET_ROUTE: | |
4852 | if (process_type3_route(peer, afi, safi, | |
4853 | withdraw ? NULL : attr, pnt, | |
4854 | psize, addpath_id)) { | |
af4c2728 | 4855 | flog_err( |
e50f7cfd | 4856 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4857 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4858 | peer->bgp->vrf_id, peer->host, psize); | |
4859 | return -1; | |
4860 | } | |
4861 | break; | |
4862 | ||
50f74cf1 | 4863 | case BGP_EVPN_ES_ROUTE: |
4864 | if (process_type4_route(peer, afi, safi, | |
4865 | withdraw ? NULL : attr, pnt, | |
4866 | psize, addpath_id)) { | |
af4c2728 | 4867 | flog_err( |
e50f7cfd | 4868 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4869 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4870 | peer->bgp->vrf_id, peer->host, psize); | |
4871 | return -1; | |
4872 | } | |
4873 | break; | |
4874 | ||
d62a17ae | 4875 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4876 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4877 | psize, addpath_id, withdraw)) { | |
af4c2728 | 4878 | flog_err( |
e50f7cfd | 4879 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4880 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4881 | peer->bgp->vrf_id, peer->host, psize); | |
4882 | return -1; | |
4883 | } | |
4884 | break; | |
4885 | ||
4886 | default: | |
4887 | break; | |
4888 | } | |
4889 | } | |
4890 | ||
4891 | /* Packet length consistency check. */ | |
4892 | if (pnt != lim) | |
4893 | return -1; | |
4894 | ||
4895 | return 0; | |
128ea8ab | 4896 | } |
4897 | ||
10ebe1ab MK |
4898 | /* |
4899 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4900 | * The mapping will be used during route processing. | |
4901 | * bgp_def: default bgp instance | |
4902 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4903 | */ | |
4904 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4905 | { | |
4906 | int i = 0; | |
4907 | struct ecommunity_val *eval = NULL; | |
4908 | struct listnode *node = NULL, *nnode = NULL; | |
4909 | struct ecommunity *ecom = NULL; | |
4910 | ||
4911 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4912 | for (i = 0; i < ecom->size; i++) { | |
4913 | eval = (struct ecommunity_val *)(ecom->val | |
4914 | + (i | |
4915 | * ECOMMUNITY_SIZE)); | |
4916 | map_vrf_to_rt(bgp_vrf, eval); | |
4917 | } | |
4918 | } | |
4919 | } | |
4920 | ||
4921 | /* | |
4922 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4923 | */ | |
4924 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4925 | { | |
4926 | int i; | |
4927 | struct ecommunity_val *eval; | |
4928 | struct listnode *node, *nnode; | |
4929 | struct ecommunity *ecom; | |
4930 | ||
4931 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4932 | for (i = 0; i < ecom->size; i++) { | |
4933 | struct vrf_irt_node *irt; | |
4934 | struct ecommunity_val eval_tmp; | |
4935 | ||
4936 | eval = (struct ecommunity_val *)(ecom->val | |
4937 | + (i | |
4938 | * ECOMMUNITY_SIZE)); | |
4939 | /* If using "automatic" RT, we only care about the | |
4940 | * local-admin sub-field. | |
4941 | * This is to facilitate using VNI as the RT for EBGP | |
4942 | * peering too. | |
4943 | */ | |
4944 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4945 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4946 | BGP_VRF_IMPORT_RT_CFGD)) | |
4947 | mask_ecom_global_admin(&eval_tmp, eval); | |
4948 | ||
4949 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4950 | if (irt) | |
4951 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4952 | } | |
4953 | } | |
4954 | } | |
4955 | ||
4956 | ||
128ea8ab | 4957 | /* |
4958 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4959 | * The mapping will be used during route processing. | |
4960 | */ | |
d62a17ae | 4961 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4962 | { |
d62a17ae | 4963 | int i; |
4964 | struct ecommunity_val *eval; | |
4965 | struct listnode *node, *nnode; | |
4966 | struct ecommunity *ecom; | |
128ea8ab | 4967 | |
d62a17ae | 4968 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4969 | for (i = 0; i < ecom->size; i++) { | |
4970 | eval = (struct ecommunity_val *)(ecom->val | |
4971 | + (i | |
4972 | * ECOMMUNITY_SIZE)); | |
4973 | map_vni_to_rt(bgp, vpn, eval); | |
4974 | } | |
4975 | } | |
128ea8ab | 4976 | } |
4977 | ||
4978 | /* | |
4979 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4980 | */ | |
d62a17ae | 4981 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4982 | { |
d62a17ae | 4983 | int i; |
4984 | struct ecommunity_val *eval; | |
4985 | struct listnode *node, *nnode; | |
4986 | struct ecommunity *ecom; | |
128ea8ab | 4987 | |
d62a17ae | 4988 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4989 | for (i = 0; i < ecom->size; i++) { | |
4990 | struct irt_node *irt; | |
4991 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4992 | |
d62a17ae | 4993 | eval = (struct ecommunity_val *)(ecom->val |
4994 | + (i | |
4995 | * ECOMMUNITY_SIZE)); | |
4996 | /* If using "automatic" RT, we only care about the | |
4997 | * local-admin sub-field. | |
4998 | * This is to facilitate using VNI as the RT for EBGP | |
4999 | * peering too. | |
5000 | */ | |
5001 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5002 | if (!is_import_rt_configured(vpn)) | |
5003 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5004 | |
d62a17ae | 5005 | irt = lookup_import_rt(bgp, &eval_tmp); |
5006 | if (irt) | |
5007 | unmap_vni_from_rt(bgp, vpn, irt); | |
5008 | } | |
5009 | } | |
128ea8ab | 5010 | } |
5011 | ||
5012 | /* | |
5013 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5014 | * The mapping will be used during route processing. | |
5015 | */ | |
d62a17ae | 5016 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5017 | { |
c581d8b0 | 5018 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5019 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5020 | |
d62a17ae | 5021 | /* Map RT to VNI */ |
5022 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5023 | } |
5024 | ||
5025 | /* | |
5026 | * Derive Export RT automatically for VNI. | |
5027 | */ | |
d62a17ae | 5028 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5029 | { |
c581d8b0 | 5030 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5031 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5032 | } |
5033 | ||
676f83b9 | 5034 | /* |
5035 | * Derive RD automatically for VNI using passed information - it | |
5036 | * is of the form RouterId:unique-id-for-vni. | |
5037 | */ | |
5038 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5039 | { | |
92708db6 | 5040 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5041 | } |
5042 | ||
128ea8ab | 5043 | /* |
5044 | * Derive RD automatically for VNI using passed information - it | |
5045 | * is of the form RouterId:unique-id-for-vni. | |
5046 | */ | |
d62a17ae | 5047 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5048 | { |
d62a17ae | 5049 | char buf[100]; |
128ea8ab | 5050 | |
d62a17ae | 5051 | vpn->prd.family = AF_UNSPEC; |
5052 | vpn->prd.prefixlen = 64; | |
5053 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5054 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5055 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5056 | } |
5057 | ||
7df407ed CS |
5058 | /* |
5059 | * Lookup L3-VNI | |
5060 | */ | |
5061 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5062 | { | |
5063 | struct list *inst = bm->bgp; | |
5064 | struct listnode *node; | |
5065 | struct bgp *bgp_vrf; | |
5066 | ||
5067 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5068 | if (bgp_vrf->l3vni == vni) | |
5069 | return true; | |
5070 | } | |
5071 | ||
5072 | return false; | |
5073 | } | |
5074 | ||
128ea8ab | 5075 | /* |
5076 | * Lookup VNI. | |
5077 | */ | |
d62a17ae | 5078 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5079 | { |
d62a17ae | 5080 | struct bgpevpn *vpn; |
5081 | struct bgpevpn tmp; | |
128ea8ab | 5082 | |
d62a17ae | 5083 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5084 | tmp.vni = vni; | |
5085 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5086 | return vpn; | |
128ea8ab | 5087 | } |
5088 | ||
5089 | /* | |
5090 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5091 | */ | |
d62a17ae | 5092 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
5093 | struct in_addr originator_ip, |
5094 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 5095 | { |
d62a17ae | 5096 | struct bgpevpn *vpn; |
128ea8ab | 5097 | |
d62a17ae | 5098 | if (!bgp) |
5099 | return NULL; | |
128ea8ab | 5100 | |
d62a17ae | 5101 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
5102 | if (!vpn) | |
5103 | return NULL; | |
128ea8ab | 5104 | |
d62a17ae | 5105 | /* Set values - RD and RT set to defaults. */ |
5106 | vpn->vni = vni; | |
5107 | vpn->originator_ip = originator_ip; | |
29c53922 | 5108 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 5109 | |
d62a17ae | 5110 | /* Initialize route-target import and export lists */ |
5111 | vpn->import_rtl = list_new(); | |
5112 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5113 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5114 | vpn->export_rtl = list_new(); |
5115 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5116 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5117 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5118 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5119 | |
d62a17ae | 5120 | /* Initialize EVPN route table. */ |
960035b2 | 5121 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5122 | |
d62a17ae | 5123 | /* Add to hash */ |
5124 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5125 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5126 | return NULL; | |
5127 | } | |
6a8657d0 MK |
5128 | |
5129 | /* add to l2vni list on corresponding vrf */ | |
5130 | bgpevpn_link_to_l3vni(vpn); | |
5131 | ||
d62a17ae | 5132 | QOBJ_REG(vpn, bgpevpn); |
5133 | return vpn; | |
128ea8ab | 5134 | } |
5135 | ||
5136 | /* | |
5137 | * Free a given VPN - called in multiple scenarios such as zebra | |
5138 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5139 | * This just frees appropriate memory, caller should have taken other | |
5140 | * needed actions. | |
5141 | */ | |
d62a17ae | 5142 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5143 | { |
6a8657d0 | 5144 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5145 | bgp_table_unlock(vpn->route_table); |
5146 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5147 | list_delete(&vpn->import_rtl); |
5148 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5149 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5150 | hash_release(bgp->vnihash, vpn); |
5151 | QOBJ_UNREG(vpn); | |
5152 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5153 | } |
5154 | ||
5155 | /* | |
50f74cf1 | 5156 | * Lookup local ES. |
5157 | */ | |
5158 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5159 | { | |
5160 | struct evpnes *es; | |
5161 | struct evpnes tmp; | |
5162 | ||
5163 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5164 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5165 | es = hash_lookup(bgp->esihash, &tmp); | |
5166 | return es; | |
5167 | } | |
5168 | ||
5169 | /* | |
5170 | * Create a new local es - invoked upon zebra notification. | |
5171 | */ | |
5172 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5173 | esi_t *esi, | |
5174 | struct ipaddr *originator_ip) | |
5175 | { | |
5176 | char buf[100]; | |
5177 | struct evpnes *es; | |
5178 | ||
5179 | if (!bgp) | |
5180 | return NULL; | |
5181 | ||
5182 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5183 | if (!es) | |
5184 | return NULL; | |
5185 | ||
5186 | /* set the ESI and originator_ip */ | |
5187 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5188 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5189 | ||
5190 | /* Initialise the VTEP list */ | |
5191 | es->vtep_list = list_new(); | |
ce167790 | 5192 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5193 | |
5194 | /* auto derive RD for this es */ | |
5195 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5196 | es->prd.family = AF_UNSPEC; | |
5197 | es->prd.prefixlen = 64; | |
5198 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5199 | (void)str2prefix_rd(buf, &es->prd); | |
5200 | ||
5201 | /* Initialize the ES route table */ | |
5202 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5203 | ||
5204 | /* Add to hash */ | |
5205 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5206 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5207 | return NULL; | |
5208 | } | |
5209 | ||
5210 | QOBJ_REG(es, evpnes); | |
5211 | return es; | |
5212 | } | |
5213 | ||
5214 | /* | |
5215 | * Free a given ES - | |
5216 | * This just frees appropriate memory, caller should have taken other | |
5217 | * needed actions. | |
5218 | */ | |
5219 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5220 | { | |
6a154c88 | 5221 | list_delete(&es->vtep_list); |
50f74cf1 | 5222 | bgp_table_unlock(es->route_table); |
5223 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5224 | hash_release(bgp->esihash, es); | |
5225 | QOBJ_UNREG(es); | |
5226 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5227 | } | |
5228 | ||
5229 | /* | |
5230 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5231 | */ |
d62a17ae | 5232 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5233 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5234 | { |
40381db7 | 5235 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5236 | } |
5237 | ||
5238 | /* | |
50f74cf1 | 5239 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5240 | */ |
d62a17ae | 5241 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5242 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5243 | { |
40381db7 | 5244 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5245 | } |
5246 | ||
db0e1937 MK |
5247 | /* filter routes which have martian next hops */ |
5248 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5249 | { | |
0291c246 MK |
5250 | afi_t afi; |
5251 | safi_t safi; | |
5252 | struct bgp_node *rd_rn, *rn; | |
5253 | struct bgp_table *table; | |
40381db7 | 5254 | struct bgp_path_info *pi; |
db0e1937 MK |
5255 | |
5256 | afi = AFI_L2VPN; | |
5257 | safi = SAFI_EVPN; | |
5258 | ||
5259 | /* Walk entire global routing table and evaluate routes which could be | |
5260 | * imported into this VPN. Note that we cannot just look at the routes | |
5261 | * for the VNI's RD - | |
5262 | * remote routes applicable for this VNI could have any RD. | |
5263 | */ | |
5264 | /* EVPN routes are a 2-level table. */ | |
5265 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5266 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5267 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5268 | if (!table) |
5269 | continue; | |
5270 | ||
5271 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5272 | ||
6f94b685 DS |
5273 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5274 | pi = pi->next) { | |
db0e1937 MK |
5275 | |
5276 | /* Consider "valid" remote routes applicable for | |
5277 | * this VNI. */ | |
40381db7 DS |
5278 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5279 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 MK |
5280 | continue; |
5281 | ||
40381db7 | 5282 | if (bgp_nexthop_self(bgp, pi->attr->nexthop)) { |
db0e1937 | 5283 | |
8ba71050 | 5284 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5285 | char pbuf[PREFIX_STRLEN]; |
5286 | ||
40381db7 | 5287 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5288 | BUFSIZ); |
5289 | ||
40381db7 | 5290 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5291 | NULL, 1)) |
5292 | zlog_debug( | |
b682f6de | 5293 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5294 | bgp->vrf_id, |
5295 | prefix2str( | |
60466a63 | 5296 | &rn->p, pbuf, |
db0e1937 MK |
5297 | sizeof(pbuf)), |
5298 | attr_str); | |
5299 | ||
5300 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5301 | &rn->p, pi); |
db0e1937 | 5302 | |
40381db7 | 5303 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5304 | safi); |
db0e1937 | 5305 | } |
db0e1937 MK |
5306 | } |
5307 | } | |
5308 | } | |
5309 | ||
5310 | return 0; | |
5311 | } | |
5312 | ||
128ea8ab | 5313 | /* |
5314 | * Handle del of a local MACIP. | |
5315 | */ | |
d62a17ae | 5316 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5317 | struct ipaddr *ip, int state) |
128ea8ab | 5318 | { |
d62a17ae | 5319 | struct bgpevpn *vpn; |
5320 | struct prefix_evpn p; | |
ec0ab544 | 5321 | struct bgp_node *rn; |
128ea8ab | 5322 | |
d62a17ae | 5323 | /* Lookup VNI hash - should exist. */ |
5324 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5325 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5326 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5327 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5328 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5329 | return -1; | |
5330 | } | |
128ea8ab | 5331 | |
d62a17ae | 5332 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5333 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5334 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5335 | delete_evpn_route(bgp, vpn, &p); | |
5336 | } else { | |
5337 | /* Re-instate the current remote best path if any */ | |
5338 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5339 | if (rn) | |
5340 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5341 | } | |
128ea8ab | 5342 | |
d62a17ae | 5343 | return 0; |
128ea8ab | 5344 | } |
5345 | ||
5346 | /* | |
5347 | * Handle add of a local MACIP. | |
5348 | */ | |
d62a17ae | 5349 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5350 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5351 | { |
d62a17ae | 5352 | struct bgpevpn *vpn; |
5353 | struct prefix_evpn p; | |
128ea8ab | 5354 | |
d62a17ae | 5355 | /* Lookup VNI hash - should exist. */ |
5356 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5357 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5358 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5359 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5360 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5361 | return -1; | |
5362 | } | |
128ea8ab | 5363 | |
d62a17ae | 5364 | /* Create EVPN type-2 route and schedule for processing. */ |
5365 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5366 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5367 | char buf[ETHER_ADDR_STRLEN]; |
5368 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5369 | |
af4c2728 | 5370 | flog_err( |
e50f7cfd | 5371 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5372 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5373 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5374 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5375 | ? "sticky gateway" | |
5376 | : "", | |
d62a17ae | 5377 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5378 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5379 | return -1; |
5380 | } | |
128ea8ab | 5381 | |
d62a17ae | 5382 | return 0; |
128ea8ab | 5383 | } |
5384 | ||
6a8657d0 MK |
5385 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5386 | struct bgp *bgp_vrf) | |
5387 | { | |
0a1a07cb | 5388 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
6a8657d0 MK |
5389 | struct bgp *bgp_def = NULL; |
5390 | ||
5391 | bgp_def = bgp_get_default(); | |
5392 | assert(bgp_def); | |
5393 | ||
6a8657d0 MK |
5394 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5395 | bgpevpn_link_to_l3vni(vpn); | |
5396 | } | |
5397 | ||
996c9314 LB |
5398 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5399 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5400 | { |
5401 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5402 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5403 | struct listnode *node = NULL; |
5404 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5405 | as_t as = 0; |
5406 | ||
d846168d | 5407 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5408 | * auto-creatio |
5409 | */ | |
fe1dc5a3 MK |
5410 | bgp_def = bgp_get_default(); |
5411 | if (!bgp_def) { | |
af4c2728 | 5412 | flog_err( |
e50f7cfd | 5413 | EC_BGP_NO_DFLT, |
996c9314 LB |
5414 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", |
5415 | l3vni); | |
fe1dc5a3 MK |
5416 | return -1; |
5417 | } | |
5418 | as = bgp_def->as; | |
5419 | ||
0437e105 | 5420 | /* if the BGP vrf instance doesn't exist - create one */ |
0b5131c9 | 5421 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5422 | if (!bgp_vrf) { |
5423 | ||
5424 | int ret = 0; | |
5425 | ||
5426 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5427 | BGP_INSTANCE_TYPE_VRF); | |
5428 | switch (ret) { | |
5429 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5430 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5431 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5432 | return -1; |
5433 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5434 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5435 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5436 | return -1; |
5437 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5438 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5439 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5440 | return -1; |
5441 | } | |
5442 | ||
5443 | /* mark as auto created */ | |
5444 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5445 | } | |
5446 | ||
5447 | /* associate with l3vni */ | |
5448 | bgp_vrf->l3vni = l3vni; | |
5449 | ||
5450 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5451 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5452 | ||
b67a60d2 | 5453 | /* set the originator ip */ |
5454 | bgp_vrf->originator_ip = originator_ip; | |
5455 | ||
c48d9f5f MK |
5456 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5457 | if (filter) | |
5458 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5459 | ||
530e8a6e | 5460 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5461 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5462 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5463 | else |
5464 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5465 | ||
c581d8b0 MK |
5466 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5467 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5468 | |
5469 | /* auto derive RD */ | |
676f83b9 | 5470 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5471 | |
6a8657d0 MK |
5472 | /* link all corresponding l2vnis */ |
5473 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5474 | (void (*)(struct hash_backet *, |
5475 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5476 | bgp_vrf); |
5477 | ||
c48d9f5f MK |
5478 | /* Only update all corresponding type-2 routes if we are advertising two |
5479 | * labels along with type-2 routes | |
5480 | */ | |
5481 | if (!filter) | |
5482 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5483 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5484 | |
06d2e8f3 MK |
5485 | /* advertise type-5 routes if needed */ |
5486 | update_advertise_vrf_routes(bgp_vrf); | |
5487 | ||
5ba238b7 MK |
5488 | /* install all remote routes belonging to this l3vni into correspondng |
5489 | * vrf */ | |
5490 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5491 | |
5492 | return 0; | |
5493 | } | |
5494 | ||
996c9314 | 5495 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5496 | { |
5497 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5498 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5499 | struct listnode *node = NULL; | |
18abc1eb | 5500 | struct listnode *next = NULL; |
f1f8b53c | 5501 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5502 | |
5503 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5504 | if (!bgp_vrf) { | |
af4c2728 | 5505 | flog_err( |
e50f7cfd | 5506 | EC_BGP_NO_DFLT, |
996c9314 LB |
5507 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5508 | l3vni); | |
fe1dc5a3 MK |
5509 | return -1; |
5510 | } | |
5511 | ||
f1f8b53c MK |
5512 | bgp_def = bgp_get_default(); |
5513 | if (!bgp_def) { | |
af4c2728 | 5514 | flog_err( |
e50f7cfd | 5515 | EC_BGP_NO_DFLT, |
996c9314 LB |
5516 | "Cannot process L3VNI %u Del - Could not find default BGP instance", |
5517 | l3vni); | |
f1f8b53c MK |
5518 | return -1; |
5519 | } | |
5520 | ||
d846168d | 5521 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5522 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5523 | * routes. This will uninstalling the routes from zebra and decremnt the |
5524 | * bgp info count. | |
523cafc4 | 5525 | */ |
d846168d | 5526 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5527 | |
06d2e8f3 MK |
5528 | /* delete/withdraw all type-5 routes */ |
5529 | delete_withdraw_vrf_routes(bgp_vrf); | |
5530 | ||
fe1dc5a3 MK |
5531 | /* remove the l3vni from vrf instance */ |
5532 | bgp_vrf->l3vni = 0; | |
5533 | ||
5534 | /* remove the Rmac from the BGP vrf */ | |
5535 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5536 | ||
530e8a6e | 5537 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5538 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5539 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5540 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5541 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5542 | } |
530e8a6e CS |
5543 | |
5544 | /* remove default export RT */ | |
5545 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5546 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5547 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5548 | } |
fe1dc5a3 | 5549 | |
f1f8b53c | 5550 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5551 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5552 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5553 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5554 | update_routes_for_vni(bgp_def, vpn); | |
5555 | } | |
5556 | } | |
fe1dc5a3 | 5557 | |
18abc1eb | 5558 | /* If any L2VNIs point to this instance, unlink them. */ |
5559 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5560 | bgpevpn_unlink_from_l3vni(vpn); | |
5561 | ||
fe1dc5a3 MK |
5562 | /* Delete the instance if it was autocreated */ |
5563 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5564 | bgp_delete(bgp_vrf); | |
5565 | ||
5566 | return 0; | |
5567 | } | |
5568 | ||
128ea8ab | 5569 | /* |
5570 | * Handle del of a local VNI. | |
5571 | */ | |
d62a17ae | 5572 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5573 | { |
d62a17ae | 5574 | struct bgpevpn *vpn; |
128ea8ab | 5575 | |
d62a17ae | 5576 | /* Locate VNI hash */ |
5577 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5578 | if (!vpn) { | |
1e00627b | 5579 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5580 | flog_warn( |
e50f7cfd | 5581 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5582 | "%u: VNI hash entry for VNI %u not found at DEL", |
5583 | bgp->vrf_id, vni); | |
d62a17ae | 5584 | return 0; |
5585 | } | |
128ea8ab | 5586 | |
d62a17ae | 5587 | /* Remove all local EVPN routes and schedule for processing (to |
5588 | * withdraw from peers). | |
5589 | */ | |
5590 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5591 | |
db0e1937 MK |
5592 | /* |
5593 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5594 | */ | |
5595 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5596 | ||
d62a17ae | 5597 | /* Clear "live" flag and see if hash needs to be freed. */ |
5598 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5599 | if (!is_vni_configured(vpn)) | |
5600 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5601 | |
d62a17ae | 5602 | return 0; |
128ea8ab | 5603 | } |
5604 | ||
5605 | /* | |
d1911c26 | 5606 | * Handle add (or update) of a local VNI. The VNI changes we care |
5607 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5608 | */ |
d62a17ae | 5609 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5610 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5611 | { |
5612 | struct bgpevpn *vpn; | |
5613 | struct prefix_evpn p; | |
5614 | ||
d62a17ae | 5615 | /* Lookup VNI. If present and no change, exit. */ |
5616 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5617 | if (vpn) { |
29c53922 | 5618 | |
d1911c26 | 5619 | if (is_vni_live(vpn) |
5620 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5621 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5622 | /* Probably some other param has changed that we don't | |
5623 | * care about. */ | |
5624 | return 0; | |
5625 | ||
5626 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5627 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5628 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5629 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5630 | bgpevpn_link_to_l3vni(vpn); |
5631 | } | |
29c53922 | 5632 | |
d1911c26 | 5633 | /* If tunnel endpoint IP has changed, update (and delete prior |
5634 | * type-3 route, if needed.) | |
5635 | */ | |
5636 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5637 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5638 | |
d1911c26 | 5639 | /* Update all routes with new endpoint IP and/or export RT |
5640 | * for VRFs | |
5641 | */ | |
5642 | if (is_vni_live(vpn)) | |
5643 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5644 | } |
5645 | ||
5646 | /* Create or update as appropriate. */ | |
5647 | if (!vpn) { | |
29c53922 | 5648 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5649 | if (!vpn) { |
af4c2728 | 5650 | flog_err( |
e50f7cfd | 5651 | EC_BGP_VNI, |
d62a17ae | 5652 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5653 | bgp->vrf_id, vni); | |
5654 | return -1; | |
5655 | } | |
5656 | } | |
5657 | ||
db0e1937 | 5658 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5659 | if (is_vni_live(vpn)) |
5660 | return 0; | |
5661 | ||
d62a17ae | 5662 | /* Mark as "live" */ |
5663 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5664 | ||
db0e1937 MK |
5665 | /* tunnel is now active, add tunnel-ip to db */ |
5666 | bgp_tip_add(bgp, &originator_ip); | |
5667 | ||
5668 | /* filter routes as nexthop database has changed */ | |
5669 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5670 | ||
fd069644 DS |
5671 | /* |
5672 | * Create EVPN type-3 route and schedule for processing. | |
5673 | * | |
5674 | * RT-3 only if doing head-end replication | |
5675 | */ | |
5676 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { | |
5677 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5678 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5679 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5680 | "%u: Type3 route creation failure for VNI %u", | |
5681 | bgp->vrf_id, vni); | |
5682 | return -1; | |
5683 | } | |
d62a17ae | 5684 | } |
5685 | ||
5686 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5687 | * VNI, | |
5688 | * install them. | |
5689 | */ | |
5690 | install_routes_for_vni(bgp, vpn); | |
5691 | ||
d7d97010 MK |
5692 | /* If we are advertising gateway mac-ip |
5693 | It needs to be conveyed again to zebra */ | |
5694 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5695 | ||
d62a17ae | 5696 | return 0; |
b18825eb | 5697 | } |
14c1a7bf | 5698 | |
50f74cf1 | 5699 | /* |
5700 | * bgp_evpn_local_es_del | |
5701 | */ | |
5702 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5703 | esi_t *esi, | |
5704 | struct ipaddr *originator_ip) | |
5705 | { | |
5706 | char buf[ESI_STR_LEN]; | |
5707 | struct evpnes *es = NULL; | |
5708 | ||
5709 | if (!bgp->esihash) { | |
e50f7cfd | 5710 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5711 | bgp->vrf_id); |
50f74cf1 | 5712 | return -1; |
5713 | } | |
5714 | ||
5715 | /* Lookup ESI hash - should exist. */ | |
5716 | es = bgp_evpn_lookup_es(bgp, esi); | |
5717 | if (!es) { | |
e50f7cfd | 5718 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5719 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5720 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5721 | return -1; |
5722 | } | |
5723 | ||
5724 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5725 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5726 | */ |
5727 | delete_routes_for_es(bgp, es); | |
5728 | ||
5729 | /* free the hash entry */ | |
5730 | bgp_evpn_es_free(bgp, es); | |
5731 | ||
5732 | return 0; | |
5733 | } | |
5734 | ||
5735 | /* | |
5736 | * bgp_evpn_local_es_add | |
5737 | */ | |
5738 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5739 | esi_t *esi, | |
5740 | struct ipaddr *originator_ip) | |
5741 | { | |
5742 | char buf[ESI_STR_LEN]; | |
5743 | struct evpnes *es = NULL; | |
5744 | struct prefix_evpn p; | |
5745 | ||
5746 | if (!bgp->esihash) { | |
e50f7cfd | 5747 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5748 | bgp->vrf_id); |
50f74cf1 | 5749 | return -1; |
5750 | } | |
5751 | ||
5752 | /* create the new es */ | |
2bb9eff4 | 5753 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5754 | if (!es) { |
5755 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5756 | if (!es) { | |
af4c2728 | 5757 | flog_err( |
e50f7cfd | 5758 | EC_BGP_ES_CREATE, |
50f74cf1 | 5759 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5760 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5761 | return -1; | |
5762 | } | |
5763 | } | |
5764 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5765 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5766 | ||
5767 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5768 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5769 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5770 | "%u: Type4 route creation failure for ESI %s", |
5771 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5772 | return -1; |
5773 | } | |
5774 | ||
5775 | /* import all remote ES routes in th ES table */ | |
5776 | install_routes_for_es(bgp, es); | |
5777 | ||
5778 | return 0; | |
5779 | } | |
5780 | ||
fd069644 DS |
5781 | /* |
5782 | * Handle change in setting for BUM handling. The supported values | |
5783 | * are head-end replication and dropping all BUM packets. Any change | |
5784 | * should be registered with zebra. Also, if doing head-end replication, | |
5785 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5786 | * to be dropped, the RT-3s must be withdrawn. | |
5787 | */ | |
5788 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5789 | { | |
5790 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5791 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5792 | "Flooding" : "Flooding Disabled"); | |
5793 | ||
5794 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5795 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5796 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5797 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5798 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5799 | } | |
5800 | ||
7724c0a1 | 5801 | /* |
5802 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5803 | * EVPN routes from peers. | |
5804 | */ | |
d62a17ae | 5805 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5806 | { |
9d303b37 DL |
5807 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5808 | void *))cleanup_vni_on_disable, | |
5809 | bgp); | |
7724c0a1 | 5810 | } |
5811 | ||
14c1a7bf | 5812 | /* |
5813 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5814 | * BGP instance (default) is being freed. | |
5815 | */ | |
d62a17ae | 5816 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5817 | { |
1525e99f DS |
5818 | hash_iterate(bgp->vnihash, |
5819 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5820 | bgp); | |
5821 | ||
5822 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5823 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5824 | |
5825 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5826 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5827 | |
5828 | hash_free(bgp->vnihash); | |
d62a17ae | 5829 | bgp->vnihash = NULL; |
50f74cf1 | 5830 | if (bgp->esihash) |
5831 | hash_free(bgp->esihash); | |
5832 | bgp->esihash = NULL; | |
1525e99f | 5833 | |
6a154c88 DL |
5834 | list_delete(&bgp->vrf_import_rtl); |
5835 | list_delete(&bgp->vrf_export_rtl); | |
5836 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5837 | } |
5838 | ||
5839 | /* | |
5840 | * Initialization for EVPN | |
5841 | * Create | |
5842 | * VNI hash table | |
5843 | * hash for RT to VNI | |
14c1a7bf | 5844 | */ |
d62a17ae | 5845 | void bgp_evpn_init(struct bgp *bgp) |
5846 | { | |
5847 | bgp->vnihash = | |
5848 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5849 | bgp->esihash = |
5850 | hash_create(esi_hash_keymake, esi_cmp, | |
5851 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5852 | bgp->import_rt_hash = |
5853 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5854 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5855 | bgp->vrf_import_rt_hash = |
5856 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5857 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5858 | bgp->vrf_import_rtl = list_new(); |
5859 | bgp->vrf_import_rtl->cmp = | |
5860 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5861 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5862 | bgp->vrf_export_rtl = list_new(); |
5863 | bgp->vrf_export_rtl->cmp = | |
5864 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5865 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5866 | bgp->l2vnis = list_new(); |
64465785 | 5867 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5868 | /* By default Duplicate Address Dection is enabled. |
5869 | * Max-moves (N) 5, detection time (M) 180 | |
5870 | * default action is warning-only | |
5871 | * freeze action permanently freezes address, | |
5872 | * and freeze time (auto-recovery) is disabled. | |
5873 | */ | |
5874 | if (bgp->evpn_info) { | |
5875 | bgp->evpn_info->dup_addr_detect = true; | |
5876 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5877 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5878 | bgp->evpn_info->dad_freeze = false; | |
5879 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5880 | /* Initialize zebra vxlan */ |
5881 | bgp_zebra_dup_addr_detection(bgp); | |
85c8d83b | 5882 | } |
fd069644 DS |
5883 | |
5884 | /* Default BUM handling is to do head-end replication. */ | |
5885 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5886 | } |
10ebe1ab MK |
5887 | |
5888 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5889 | { | |
5890 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5891 | } |