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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 | /* | |
f9b8094e | 171 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
172 | */ |
173 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
174 | { | |
5e53dce3 | 175 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
176 | struct vrf_irt_node *irt; |
177 | ||
5e53dce3 T |
178 | bgp_evpn = bgp_get_evpn(); |
179 | if (!bgp_evpn) { | |
e50f7cfd | 180 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 181 | "vrf import rt new - evpn 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)); | |
10ebe1ab MK |
187 | |
188 | irt->rt = *rt; | |
189 | irt->vrfs = list_new(); | |
190 | ||
191 | /* Add to hash */ | |
5e53dce3 | 192 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
193 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
194 | return NULL; | |
195 | } | |
196 | ||
197 | return irt; | |
198 | } | |
199 | ||
200 | /* | |
201 | * Free the vrf import rt node | |
202 | */ | |
203 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
204 | { | |
5e53dce3 | 205 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 206 | |
5e53dce3 T |
207 | bgp_evpn = bgp_get_evpn(); |
208 | if (!bgp_evpn) { | |
e50f7cfd | 209 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 210 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
211 | return; |
212 | } | |
213 | ||
5e53dce3 | 214 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 215 | list_delete(&irt->vrfs); |
10ebe1ab MK |
216 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
217 | } | |
218 | ||
219 | /* | |
220 | * Function to lookup Import RT node - used to map a RT to set of | |
221 | * VNIs importing routes with that RT. | |
222 | */ | |
223 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
224 | { | |
5e53dce3 | 225 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
226 | struct vrf_irt_node *irt; |
227 | struct vrf_irt_node tmp; | |
228 | ||
5e53dce3 T |
229 | bgp_evpn = bgp_get_evpn(); |
230 | if (!bgp_evpn) { | |
f9b8094e T |
231 | flog_err( |
232 | EC_BGP_NO_DFLT, | |
233 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
234 | return NULL; |
235 | } | |
236 | ||
237 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
238 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 239 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
240 | return irt; |
241 | } | |
242 | ||
243 | /* | |
244 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
245 | */ | |
996c9314 | 246 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
247 | { |
248 | struct listnode *node = NULL, *nnode = NULL; | |
249 | struct bgp *tmp_bgp_vrf = NULL; | |
250 | ||
251 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
252 | if (tmp_bgp_vrf == bgp_vrf) | |
253 | return 1; | |
254 | } | |
255 | return 0; | |
256 | } | |
257 | ||
14c1a7bf | 258 | /* |
259 | * Make import route target hash key. | |
260 | */ | |
d62a17ae | 261 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 262 | { |
d62a17ae | 263 | struct irt_node *irt = p; |
264 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
265 | |
266 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 267 | } |
268 | ||
269 | /* | |
270 | * Comparison function for import rt hash | |
271 | */ | |
74df8d6d | 272 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 273 | { |
d62a17ae | 274 | const struct irt_node *irt1 = p1; |
275 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 276 | |
d62a17ae | 277 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 278 | return true; |
14c1a7bf | 279 | |
d62a17ae | 280 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 281 | return false; |
14c1a7bf | 282 | |
d62a17ae | 283 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 284 | } |
285 | ||
7724c0a1 | 286 | /* |
128ea8ab | 287 | * Create a new import_rt |
288 | */ | |
d62a17ae | 289 | static struct irt_node *import_rt_new(struct bgp *bgp, |
290 | struct ecommunity_val *rt) | |
128ea8ab | 291 | { |
d62a17ae | 292 | struct irt_node *irt; |
128ea8ab | 293 | |
d62a17ae | 294 | if (!bgp) |
295 | return NULL; | |
128ea8ab | 296 | |
d62a17ae | 297 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 298 | |
d62a17ae | 299 | irt->rt = *rt; |
300 | irt->vnis = list_new(); | |
128ea8ab | 301 | |
d62a17ae | 302 | /* Add to hash */ |
303 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
304 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
305 | return NULL; | |
306 | } | |
128ea8ab | 307 | |
d62a17ae | 308 | return irt; |
128ea8ab | 309 | } |
310 | ||
311 | /* | |
312 | * Free the import rt node | |
7724c0a1 | 313 | */ |
d62a17ae | 314 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 315 | { |
d62a17ae | 316 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 317 | list_delete(&irt->vnis); |
d62a17ae | 318 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 319 | } |
320 | ||
14c1a7bf | 321 | /* |
128ea8ab | 322 | * Function to lookup Import RT node - used to map a RT to set of |
323 | * VNIs importing routes with that RT. | |
324 | */ | |
d62a17ae | 325 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
326 | struct ecommunity_val *rt) | |
128ea8ab | 327 | { |
d62a17ae | 328 | struct irt_node *irt; |
329 | struct irt_node tmp; | |
128ea8ab | 330 | |
d62a17ae | 331 | memset(&tmp, 0, sizeof(struct irt_node)); |
332 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
333 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
334 | return irt; | |
128ea8ab | 335 | } |
336 | ||
337 | /* | |
338 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
339 | */ | |
d62a17ae | 340 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 341 | { |
d62a17ae | 342 | struct listnode *node, *nnode; |
343 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 344 | |
d62a17ae | 345 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
346 | if (tmp_vpn == vpn) | |
347 | return 1; | |
348 | } | |
128ea8ab | 349 | |
d62a17ae | 350 | return 0; |
128ea8ab | 351 | } |
352 | ||
353 | /* | |
354 | * Compare Route Targets. | |
355 | */ | |
d62a17ae | 356 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
357 | struct ecommunity *ecom2) | |
128ea8ab | 358 | { |
d62a17ae | 359 | if (ecom1 && !ecom2) |
360 | return -1; | |
128ea8ab | 361 | |
d62a17ae | 362 | if (!ecom1 && ecom2) |
363 | return 1; | |
128ea8ab | 364 | |
d62a17ae | 365 | if (!ecom1 && !ecom2) |
366 | return 0; | |
128ea8ab | 367 | |
d62a17ae | 368 | if (ecom1->str && !ecom2->str) |
369 | return -1; | |
128ea8ab | 370 | |
d62a17ae | 371 | if (!ecom1->str && ecom2->str) |
372 | return 1; | |
128ea8ab | 373 | |
d62a17ae | 374 | if (!ecom1->str && !ecom2->str) |
375 | return 0; | |
128ea8ab | 376 | |
d62a17ae | 377 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 378 | } |
379 | ||
987d8198 DS |
380 | static void evpn_xxport_delete_ecomm(void *val) |
381 | { | |
382 | struct ecommunity *ecomm = val; | |
383 | ecommunity_free(&ecomm); | |
384 | } | |
385 | ||
128ea8ab | 386 | /* |
387 | * Mask off global-admin field of specified extended community (RT), | |
388 | * just retain the local-admin field. | |
389 | */ | |
d62a17ae | 390 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
391 | struct ecommunity_val *src) | |
128ea8ab | 392 | { |
d7c0a89a | 393 | uint8_t type; |
128ea8ab | 394 | |
d62a17ae | 395 | type = src->val[0]; |
396 | dst->val[0] = 0; | |
397 | if (type == ECOMMUNITY_ENCODE_AS) { | |
398 | dst->val[2] = dst->val[3] = 0; | |
399 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
400 | || type == ECOMMUNITY_ENCODE_IP) { | |
401 | dst->val[2] = dst->val[3] = 0; | |
402 | dst->val[4] = dst->val[5] = 0; | |
403 | } | |
128ea8ab | 404 | } |
405 | ||
10ebe1ab MK |
406 | /* |
407 | * Map one RT to specified VRF. | |
408 | * bgp_vrf = BGP vrf instance | |
409 | */ | |
996c9314 | 410 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
411 | { |
412 | struct vrf_irt_node *irt = NULL; | |
413 | struct ecommunity_val eval_tmp; | |
414 | ||
415 | /* If using "automatic" RT, | |
416 | * we only care about the local-admin sub-field. | |
417 | * This is to facilitate using L3VNI(VRF-VNI) | |
418 | * as the RT for EBGP peering too. | |
419 | */ | |
420 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 421 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
422 | mask_ecom_global_admin(&eval_tmp, eval); |
423 | ||
424 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
425 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
426 | /* Already mapped. */ | |
427 | return; | |
10ebe1ab | 428 | |
e066d6d0 | 429 | if (!irt) |
10ebe1ab | 430 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
431 | |
432 | /* Add VRF to the list for this RT. */ | |
433 | listnode_add(irt->vrfs, bgp_vrf); | |
434 | } | |
435 | ||
436 | /* | |
437 | * Unmap specified VRF from specified RT. If there are no other | |
438 | * VRFs for this RT, then the RT hash is deleted. | |
439 | * bgp_vrf: BGP VRF specific instance | |
440 | */ | |
996c9314 | 441 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
442 | { |
443 | /* Delete VRF from list for this RT. */ | |
444 | listnode_delete(irt->vrfs, bgp_vrf); | |
445 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
446 | vrf_import_rt_free(irt); |
447 | } | |
448 | } | |
449 | ||
128ea8ab | 450 | /* |
451 | * Map one RT to specified VNI. | |
14c1a7bf | 452 | */ |
d62a17ae | 453 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
454 | struct ecommunity_val *eval) | |
128ea8ab | 455 | { |
d62a17ae | 456 | struct irt_node *irt; |
457 | struct ecommunity_val eval_tmp; | |
128ea8ab | 458 | |
d62a17ae | 459 | /* If using "automatic" RT, we only care about the local-admin |
460 | * sub-field. | |
461 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
462 | */ | |
463 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
464 | if (!is_import_rt_configured(vpn)) | |
465 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 466 | |
d62a17ae | 467 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 468 | if (irt) |
d62a17ae | 469 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
470 | /* Already mapped. */ | |
471 | return; | |
128ea8ab | 472 | |
d62a17ae | 473 | if (!irt) { |
474 | irt = import_rt_new(bgp, &eval_tmp); | |
475 | assert(irt); | |
476 | } | |
128ea8ab | 477 | |
d62a17ae | 478 | /* Add VNI to the hash list for this RT. */ |
479 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 480 | } |
481 | ||
482 | /* | |
483 | * Unmap specified VNI from specified RT. If there are no other | |
484 | * VNIs for this RT, then the RT hash is deleted. | |
485 | */ | |
d62a17ae | 486 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
487 | struct irt_node *irt) | |
14c1a7bf | 488 | { |
d62a17ae | 489 | /* Delete VNI from hash list for this RT. */ |
490 | listnode_delete(irt->vnis, vpn); | |
491 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 492 | import_rt_free(bgp, irt); |
493 | } | |
14c1a7bf | 494 | } |
495 | ||
128ea8ab | 496 | /* |
497 | * Create RT extended community automatically from passed information: | |
498 | * of the form AS:VNI. | |
499 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
500 | * the need is to get a RT value that will be unique across different | |
501 | * VNIs but the same across routers (in the same AS) for a particular | |
502 | * VNI. | |
503 | */ | |
c581d8b0 | 504 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 505 | { |
d62a17ae | 506 | struct ecommunity_val eval; |
507 | struct ecommunity *ecomadd; | |
128ea8ab | 508 | |
bf1061d8 VB |
509 | if (bgp->advertise_autort_rfc8365) |
510 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 511 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 512 | |
d62a17ae | 513 | ecomadd = ecommunity_new(); |
514 | ecommunity_add_val(ecomadd, &eval); | |
515 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 516 | } |
14c1a7bf | 517 | |
518 | /* | |
128ea8ab | 519 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
520 | * creation of a VNI. | |
521 | */ | |
d62a17ae | 522 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 523 | { |
d62a17ae | 524 | bgp_evpn_derive_auto_rd(bgp, vpn); |
525 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
526 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 527 | } |
528 | ||
1ec31309 | 529 | /* |
530 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
531 | */ | |
532 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
533 | { | |
534 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
535 | return; | |
536 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
537 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
538 | } | |
539 | ||
128ea8ab | 540 | /* |
541 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 542 | */ |
d62a17ae | 543 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
544 | struct prefix_evpn *p, | |
545 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 546 | uint8_t flags, uint32_t seq) |
d62a17ae | 547 | { |
548 | struct stream *s; | |
549 | int ipa_len; | |
550 | char buf1[ETHER_ADDR_STRLEN]; | |
551 | char buf2[INET6_ADDRSTRLEN]; | |
552 | char buf3[INET6_ADDRSTRLEN]; | |
553 | ||
554 | /* Check socket. */ | |
555 | if (!zclient || zclient->sock < 0) | |
556 | return 0; | |
557 | ||
558 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
559 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
560 | if (BGP_DEBUG(zebra, ZEBRA)) | |
561 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
562 | __PRETTY_FUNCTION__); | |
d62a17ae | 563 | return 0; |
bb4ef1ae | 564 | } |
d62a17ae | 565 | s = zclient->obuf; |
566 | stream_reset(s); | |
567 | ||
996c9314 LB |
568 | zclient_create_header( |
569 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
570 | bgp->vrf_id); | |
d62a17ae | 571 | stream_putl(s, vpn->vni); |
3714a385 | 572 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 573 | /* IP address length and IP address, if any. */ |
3714a385 | 574 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 575 | stream_putl(s, 0); |
576 | else { | |
3714a385 | 577 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 578 | : IPV6_MAX_BYTELEN; |
579 | stream_putl(s, ipa_len); | |
3714a385 | 580 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 581 | } |
582 | stream_put_in_addr(s, &remote_vtep_ip); | |
583 | ||
ead40654 | 584 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 585 | /* Also TX the sequence number of the best route. */ |
586 | if (add) { | |
ead40654 | 587 | stream_putc(s, flags); |
f07e1c99 | 588 | stream_putl(s, seq); |
589 | } | |
d62a17ae | 590 | |
591 | stream_putw_at(s, 0, stream_get_endp(s)); | |
592 | ||
593 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 594 | zlog_debug( |
f07e1c99 | 595 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 596 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 597 | prefix_mac2str(&p->prefix.macip_addr.mac, |
598 | buf1, sizeof(buf1)), | |
599 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 600 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
601 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
602 | sizeof(buf2))); | |
d62a17ae | 603 | |
604 | return zclient_send_message(zclient); | |
7ef5a232 | 605 | } |
b18825eb | 606 | |
128ea8ab | 607 | /* |
608 | * Add (update) or delete remote VTEP from zebra. | |
609 | */ | |
d62a17ae | 610 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
611 | struct prefix_evpn *p, int add) | |
128ea8ab | 612 | { |
d62a17ae | 613 | struct stream *s; |
128ea8ab | 614 | |
d62a17ae | 615 | /* Check socket. */ |
616 | if (!zclient || zclient->sock < 0) | |
617 | return 0; | |
128ea8ab | 618 | |
d62a17ae | 619 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
620 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
621 | if (BGP_DEBUG(zebra, ZEBRA)) | |
622 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
623 | __PRETTY_FUNCTION__); | |
d62a17ae | 624 | return 0; |
bb4ef1ae | 625 | } |
128ea8ab | 626 | |
d62a17ae | 627 | s = zclient->obuf; |
628 | stream_reset(s); | |
128ea8ab | 629 | |
996c9314 LB |
630 | zclient_create_header( |
631 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
632 | bgp->vrf_id); | |
d62a17ae | 633 | stream_putl(s, vpn->vni); |
3714a385 | 634 | if (is_evpn_prefix_ipaddr_v4(p)) |
635 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
636 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 637 | flog_err( |
e50f7cfd | 638 | EC_BGP_VTEP_INVALID, |
d62a17ae | 639 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
640 | add ? "ADD" : "DEL", vpn->vni); | |
641 | return -1; | |
642 | } | |
128ea8ab | 643 | |
d62a17ae | 644 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 645 | |
d62a17ae | 646 | if (bgp_debug_zebra(NULL)) |
647 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
648 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 649 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 650 | |
d62a17ae | 651 | return zclient_send_message(zclient); |
128ea8ab | 652 | } |
653 | ||
50f74cf1 | 654 | /* |
655 | * Build extended community for EVPN ES (type-4) route | |
656 | */ | |
657 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
658 | struct attr *attr) | |
659 | { | |
660 | struct ecommunity ecom_encap; | |
661 | struct ecommunity ecom_es_rt; | |
662 | struct ecommunity_val eval; | |
663 | struct ecommunity_val eval_es_rt; | |
664 | bgp_encap_types tnl_type; | |
665 | struct ethaddr mac; | |
666 | ||
667 | /* Encap */ | |
668 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
669 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
670 | encode_encap_extcomm(tnl_type, &eval); | |
671 | ecom_encap.size = 1; | |
672 | ecom_encap.val = (uint8_t *)eval.val; | |
673 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
674 | ||
675 | /* ES import RT */ | |
676 | memset(&mac, 0, sizeof(struct ethaddr)); | |
677 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
678 | es_get_system_mac(&es->esi, &mac); | |
679 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
680 | ecom_es_rt.size = 1; | |
681 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
682 | attr->ecommunity = | |
683 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
684 | ||
685 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
686 | } | |
687 | ||
342dd0c6 | 688 | /* |
689 | * Build extended communities for EVPN prefix route. | |
690 | */ | |
691 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
692 | struct attr *attr) | |
693 | { | |
694 | struct ecommunity ecom_encap; | |
695 | struct ecommunity ecom_rmac; | |
696 | struct ecommunity_val eval; | |
697 | struct ecommunity_val eval_rmac; | |
698 | bgp_encap_types tnl_type; | |
699 | struct listnode *node, *nnode; | |
700 | struct ecommunity *ecom; | |
701 | struct list *vrf_export_rtl = NULL; | |
702 | ||
703 | /* Encap */ | |
704 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
705 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
706 | encode_encap_extcomm(tnl_type, &eval); | |
707 | ecom_encap.size = 1; | |
d7c0a89a | 708 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 709 | |
710 | /* Add Encap */ | |
711 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
712 | ||
713 | /* Add the export RTs for L3VNI/VRF */ | |
714 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
715 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
716 | attr->ecommunity = | |
717 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 718 | |
719 | /* add the router mac extended community */ | |
720 | if (!is_zero_mac(&attr->rmac)) { | |
721 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
722 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
723 | ecom_rmac.size = 1; | |
724 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
725 | attr->ecommunity = |
726 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 727 | } |
728 | ||
729 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
730 | } | |
731 | ||
128ea8ab | 732 | /* |
1ec31309 | 733 | * Build extended communities for EVPN route. |
734 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
735 | * and ENCAP extended communities are applicable for all routes. | |
736 | * The default gateway extended community and MAC mobility (sticky) extended | |
737 | * community are added as needed based on passed settings - only for type-2 | |
738 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
739 | * added, if present, based on passed settings - only for non-link-local | |
740 | * type-2 routes. | |
128ea8ab | 741 | */ |
7ec156a9 | 742 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 743 | int add_l3_ecomm) |
128ea8ab | 744 | { |
d62a17ae | 745 | struct ecommunity ecom_encap; |
746 | struct ecommunity ecom_sticky; | |
ead40654 | 747 | struct ecommunity ecom_default_gw; |
bc59a672 | 748 | struct ecommunity ecom_rmac; |
68e33151 | 749 | struct ecommunity ecom_na; |
d62a17ae | 750 | struct ecommunity_val eval; |
751 | struct ecommunity_val eval_sticky; | |
ead40654 | 752 | struct ecommunity_val eval_default_gw; |
bc59a672 | 753 | struct ecommunity_val eval_rmac; |
68e33151 CS |
754 | struct ecommunity_val eval_na; |
755 | ||
d62a17ae | 756 | bgp_encap_types tnl_type; |
757 | struct listnode *node, *nnode; | |
758 | struct ecommunity *ecom; | |
d7c0a89a | 759 | uint32_t seqnum; |
7a3e76f1 | 760 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 761 | |
d62a17ae | 762 | /* Encap */ |
763 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
764 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
765 | encode_encap_extcomm(tnl_type, &eval); | |
766 | ecom_encap.size = 1; | |
d7c0a89a | 767 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 768 | |
d62a17ae | 769 | /* Add Encap */ |
770 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 771 | |
7a3e76f1 | 772 | /* Add the export RTs for L2VNI */ |
d62a17ae | 773 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
774 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 775 | |
1ec31309 | 776 | /* Add the export RTs for L3VNI if told to - caller determines |
777 | * when this should be done. | |
523cafc4 | 778 | */ |
1ec31309 | 779 | if (add_l3_ecomm) { |
7ec156a9 MK |
780 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
781 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
782 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
783 | ecom)) | |
996c9314 LB |
784 | attr->ecommunity = ecommunity_merge( |
785 | attr->ecommunity, ecom); | |
7ec156a9 | 786 | } |
f1f8b53c | 787 | } |
7a3e76f1 | 788 | |
1ec31309 | 789 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 790 | if (attr->sticky) { |
791 | seqnum = 0; | |
792 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
793 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
794 | ecom_sticky.size = 1; | |
d7c0a89a | 795 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 796 | attr->ecommunity = |
797 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
798 | } | |
c85c03c7 | 799 | |
1ec31309 | 800 | /* Add RMAC, if told to. */ |
801 | if (add_l3_ecomm) { | |
bc59a672 MK |
802 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
803 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
804 | ecom_rmac.size = 1; | |
805 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
806 | attr->ecommunity = |
807 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
808 | } |
809 | ||
1ec31309 | 810 | /* Add default gateway, if needed. */ |
ead40654 MK |
811 | if (attr->default_gw) { |
812 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
813 | encode_default_gw_extcomm(&eval_default_gw); | |
814 | ecom_default_gw.size = 1; | |
815 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
816 | attr->ecommunity = |
817 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
818 | } |
819 | ||
68e33151 CS |
820 | if (attr->router_flag) { |
821 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
822 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
823 | ecom_na.size = 1; | |
824 | ecom_na.val = (uint8_t *)eval_na.val; | |
825 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
826 | &ecom_na); | |
827 | } | |
828 | ||
d62a17ae | 829 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 830 | } |
831 | ||
832 | /* | |
833 | * Add MAC mobility extended community to attribute. | |
834 | */ | |
d7c0a89a | 835 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 836 | { |
837 | struct ecommunity ecom_tmp; | |
838 | struct ecommunity_val eval; | |
d7c0a89a | 839 | uint8_t *ecom_val_ptr; |
d62a17ae | 840 | int i; |
d7c0a89a | 841 | uint8_t *pnt; |
d62a17ae | 842 | int type = 0; |
843 | int sub_type = 0; | |
844 | ||
845 | /* Build MM */ | |
846 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
847 | ||
848 | /* Find current MM ecommunity */ | |
421bb26a | 849 | ecom_val_ptr = NULL; |
d62a17ae | 850 | |
851 | if (attr->ecommunity) { | |
852 | for (i = 0; i < attr->ecommunity->size; i++) { | |
853 | pnt = attr->ecommunity->val + (i * 8); | |
854 | type = *pnt++; | |
855 | sub_type = *pnt++; | |
856 | ||
857 | if (type == ECOMMUNITY_ENCODE_EVPN | |
858 | && sub_type | |
859 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
860 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
861 | + (i * 8)); | |
d62a17ae | 862 | break; |
863 | } | |
864 | } | |
865 | } | |
866 | ||
867 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
868 | if (ecom_val_ptr) { |
869 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 870 | } |
871 | /* Add MM to existing */ | |
872 | else { | |
873 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
874 | ecom_tmp.size = 1; | |
d7c0a89a | 875 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 876 | |
f9a78910 DS |
877 | if (attr->ecommunity) |
878 | attr->ecommunity = | |
879 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
880 | else | |
881 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 882 | } |
128ea8ab | 883 | } |
884 | ||
885 | /* Install EVPN route into zebra. */ | |
d62a17ae | 886 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
d594a14c | 887 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 888 | { |
d62a17ae | 889 | int ret; |
d594a14c | 890 | uint8_t flags; |
128ea8ab | 891 | |
d594a14c AK |
892 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
893 | flags = 0; | |
894 | if (pi->attr->sticky) | |
895 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
896 | if (pi->attr->default_gw) | |
897 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
898 | if (is_evpn_prefix_ipaddr_v6(p) && | |
899 | pi->attr->router_flag) | |
900 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
901 | ret = bgp_zebra_send_remote_macip( | |
902 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
903 | mac_mobility_seqnum(pi->attr)); | |
904 | } else { | |
d62a17ae | 905 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); |
d594a14c | 906 | } |
128ea8ab | 907 | |
d62a17ae | 908 | return ret; |
128ea8ab | 909 | } |
910 | ||
911 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 912 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
913 | struct prefix_evpn *p, | |
914 | struct in_addr remote_vtep_ip) | |
128ea8ab | 915 | { |
d62a17ae | 916 | int ret; |
128ea8ab | 917 | |
d62a17ae | 918 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
919 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 920 | 0, 0, 0); |
d62a17ae | 921 | else |
922 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 923 | |
d62a17ae | 924 | return ret; |
128ea8ab | 925 | } |
926 | ||
927 | /* | |
928 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
929 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
930 | * from peers. | |
931 | */ | |
d62a17ae | 932 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
933 | struct bgp_node *rn, | |
4b7e6066 | 934 | struct bgp_path_info *old_local) |
128ea8ab | 935 | { |
d62a17ae | 936 | struct bgp_node *global_rn; |
40381db7 | 937 | struct bgp_path_info *pi; |
d62a17ae | 938 | afi_t afi = AFI_L2VPN; |
939 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 940 | |
d62a17ae | 941 | /* Locate route node in the global EVPN routing table. Note that |
942 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
943 | * L3VPN routes. | |
944 | */ | |
945 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
946 | (struct prefix *)&rn->p, &vpn->prd); | |
947 | if (global_rn) { | |
948 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 949 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 950 | |
d62a17ae | 951 | /* Schedule for processing - withdraws to peers happen from |
952 | * this table. | |
953 | */ | |
40381db7 | 954 | if (pi) |
d62a17ae | 955 | bgp_process(bgp, global_rn, afi, safi); |
956 | bgp_unlock_node(global_rn); | |
957 | } | |
128ea8ab | 958 | |
d62a17ae | 959 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 960 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 961 | } |
962 | ||
50f74cf1 | 963 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
964 | { | |
965 | struct in_addr *ip; | |
966 | ||
967 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 968 | |
969 | ip->s_addr = vtep.s_addr; | |
970 | return ip; | |
971 | } | |
972 | ||
973 | static void es_vtep_free(struct in_addr *ip) | |
974 | { | |
975 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
976 | } | |
977 | ||
978 | /* check if VTEP is already part of the list */ | |
979 | static int is_vtep_present_in_list(struct list *list, | |
980 | struct in_addr vtep) | |
981 | { | |
982 | struct listnode *node = NULL; | |
983 | struct in_addr *tmp; | |
984 | ||
985 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
986 | if (tmp->s_addr == vtep.s_addr) | |
987 | return 1; | |
988 | } | |
989 | return 0; | |
990 | } | |
991 | ||
2bb9eff4 DS |
992 | /* |
993 | * Best path for ES route was changed, | |
994 | * update the list of VTEPs for this ES | |
995 | */ | |
50f74cf1 | 996 | static int evpn_es_install_vtep(struct bgp *bgp, |
997 | struct evpnes *es, | |
998 | struct prefix_evpn *p, | |
999 | struct in_addr rvtep) | |
1000 | { | |
1001 | struct in_addr *vtep_ip; | |
1002 | ||
1003 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1004 | return 0; | |
1005 | ||
1006 | ||
1007 | vtep_ip = es_vtep_new(rvtep); | |
1008 | if (vtep_ip) | |
1009 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1010 | return 0; | |
1011 | } | |
1012 | ||
2bb9eff4 DS |
1013 | /* |
1014 | * Best path for ES route was changed, | |
1015 | * update the list of VTEPs for this ES | |
1016 | */ | |
50f74cf1 | 1017 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1018 | struct evpnes *es, | |
1019 | struct prefix_evpn *p, | |
1020 | struct in_addr rvtep) | |
1021 | { | |
1022 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1023 | struct in_addr *tmp; | |
1024 | ||
1025 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1026 | if (tmp->s_addr == rvtep.s_addr) { | |
1027 | es_vtep_free(tmp); | |
1028 | node_to_del = node; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | if (node_to_del) | |
1033 | list_delete_node(es->vtep_list, node_to_del); | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | /* | |
1039 | * Calculate the best path for a ES(type-4) route. | |
1040 | */ | |
1041 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1042 | struct evpnes *es, | |
1043 | struct bgp_node *rn) | |
1044 | { | |
1045 | int ret = 0; | |
1046 | afi_t afi = AFI_L2VPN; | |
1047 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1048 | struct bgp_path_info *old_select; /* old best */ |
1049 | struct bgp_path_info *new_select; /* new best */ | |
1050 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1051 | |
1052 | /* Compute the best path. */ | |
1053 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1054 | &old_and_new, afi, safi); | |
1055 | old_select = old_and_new.old; | |
1056 | new_select = old_and_new.new; | |
1057 | ||
2bb9eff4 DS |
1058 | /* |
1059 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1060 | * updated |
1061 | */ | |
1062 | if (old_select && old_select == new_select | |
1063 | && old_select->type == ZEBRA_ROUTE_BGP | |
1064 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1065 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1066 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1067 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1068 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1069 | ret = evpn_es_install_vtep(bgp, es, | |
1070 | (struct prefix_evpn *)&rn->p, | |
1071 | old_select->attr->nexthop); | |
1072 | } | |
1defdda8 | 1073 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1074 | bgp_zebra_clear_route_change_flags(rn); |
1075 | return ret; | |
1076 | } | |
1077 | ||
1078 | /* If the user did a "clear" this flag will be set */ | |
1079 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1080 | ||
2bb9eff4 DS |
1081 | /* |
1082 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1083 | * into the zebra RIB. |
1084 | */ | |
1085 | if (old_select || new_select) | |
1086 | bgp_bump_version(rn); | |
1087 | ||
1088 | if (old_select) | |
18ee8310 | 1089 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1090 | if (new_select) { |
18ee8310 DS |
1091 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1092 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1093 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1094 | } |
1095 | ||
1096 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1097 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1098 | ret = evpn_es_install_vtep(bgp, es, | |
1099 | (struct prefix_evpn *)&rn->p, | |
1100 | new_select->attr->nexthop); | |
1101 | } else { | |
1102 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1103 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1104 | ret = evpn_es_uninstall_vtep( |
1105 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1106 | old_select->attr->nexthop); | |
50f74cf1 | 1107 | } |
1108 | ||
1109 | /* Clear any route change flags. */ | |
1110 | bgp_zebra_clear_route_change_flags(rn); | |
1111 | ||
18ee8310 | 1112 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1113 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1114 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1115 | |
1116 | return ret; | |
1117 | } | |
1118 | ||
128ea8ab | 1119 | /* |
1120 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1121 | * if appropriate. | |
1122 | */ | |
d62a17ae | 1123 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1124 | struct bgp_node *rn) | |
1125 | { | |
4b7e6066 DS |
1126 | struct bgp_path_info *old_select, *new_select; |
1127 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1128 | afi_t afi = AFI_L2VPN; |
1129 | safi_t safi = SAFI_EVPN; | |
1130 | int ret = 0; | |
1131 | ||
1132 | /* Compute the best path. */ | |
1133 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1134 | afi, safi); | |
1135 | old_select = old_and_new.old; | |
1136 | new_select = old_and_new.new; | |
1137 | ||
1138 | /* If the best path hasn't changed - see if there is still something to | |
1139 | * update | |
1140 | * to zebra RIB. | |
1141 | */ | |
1142 | if (old_select && old_select == new_select | |
1143 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1144 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1145 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1146 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1147 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1148 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1149 | ret = evpn_zebra_install( |
1150 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1151 | old_select); |
1defdda8 | 1152 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1153 | bgp_zebra_clear_route_change_flags(rn); |
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | /* If the user did a "clear" this flag will be set */ | |
1158 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1159 | ||
1160 | /* bestpath has changed; update relevant fields and install or uninstall | |
1161 | * into the zebra RIB. | |
1162 | */ | |
1163 | if (old_select || new_select) | |
1164 | bgp_bump_version(rn); | |
1165 | ||
1166 | if (old_select) | |
18ee8310 | 1167 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1168 | if (new_select) { |
18ee8310 DS |
1169 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1170 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1171 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1172 | } |
1173 | ||
1174 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1175 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1176 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1177 | new_select); |
1178 | ||
d62a17ae | 1179 | /* If an old best existed and it was a "local" route, the only |
1180 | * reason | |
1181 | * it would be supplanted is due to MAC mobility procedures. So, | |
1182 | * we | |
1183 | * need to do an implicit delete and withdraw that route from | |
1184 | * peers. | |
1185 | */ | |
1186 | if (old_select && old_select->peer == bgp->peer_self | |
1187 | && old_select->type == ZEBRA_ROUTE_BGP | |
1188 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1189 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1190 | } else { | |
1191 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1192 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1193 | ret = evpn_zebra_uninstall(bgp, vpn, |
1194 | (struct prefix_evpn *)&rn->p, | |
1195 | old_select->attr->nexthop); | |
1196 | } | |
1197 | ||
1198 | /* Clear any route change flags. */ | |
1199 | bgp_zebra_clear_route_change_flags(rn); | |
1200 | ||
18ee8310 | 1201 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1202 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1203 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1204 | |
1205 | return ret; | |
128ea8ab | 1206 | } |
1207 | ||
ead40654 MK |
1208 | /* |
1209 | * Return true if the local ri for this rn is of type gateway mac | |
1210 | */ | |
1211 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1212 | { | |
40381db7 DS |
1213 | struct bgp_path_info *tmp_pi = NULL; |
1214 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1215 | |
40381db7 | 1216 | local_pi = NULL; |
6f94b685 DS |
1217 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1218 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1219 | if (tmp_pi->peer == bgp->peer_self |
1220 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1221 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1222 | local_pi = tmp_pi; | |
ead40654 MK |
1223 | } |
1224 | ||
40381db7 | 1225 | if (!local_pi) |
ead40654 MK |
1226 | return 0; |
1227 | ||
40381db7 | 1228 | return local_pi->attr->default_gw; |
ead40654 MK |
1229 | } |
1230 | ||
c85c03c7 | 1231 | |
1232 | /* | |
1233 | * Return true if the local ri for this rn has sticky set | |
1234 | */ | |
d62a17ae | 1235 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1236 | { |
40381db7 DS |
1237 | struct bgp_path_info *tmp_pi; |
1238 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1239 | |
40381db7 | 1240 | local_pi = NULL; |
6f94b685 DS |
1241 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1242 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1243 | if (tmp_pi->peer == bgp->peer_self |
1244 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1245 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1246 | local_pi = tmp_pi; | |
d62a17ae | 1247 | } |
c85c03c7 | 1248 | |
40381db7 | 1249 | if (!local_pi) |
d62a17ae | 1250 | return 0; |
c85c03c7 | 1251 | |
40381db7 | 1252 | return local_pi->attr->sticky; |
c85c03c7 | 1253 | } |
1254 | ||
50f74cf1 | 1255 | /* |
1256 | * create or update EVPN type4 route entry. | |
1257 | * This could be in the ES table or the global table. | |
1258 | * TODO: handle remote ES (type4) routes as well | |
1259 | */ | |
4b7e6066 | 1260 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1261 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1262 | struct bgp_node *rn, struct attr *attr, |
1263 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1264 | int *route_changed) |
1265 | { | |
1266 | char buf[ESI_STR_LEN]; | |
1267 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1268 | struct bgp_path_info *tmp_pi = NULL; |
1269 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1270 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1271 | struct attr *attr_new = NULL; |
1272 | struct prefix_evpn *evp = NULL; | |
1273 | ||
1274 | *ri = NULL; | |
1275 | *route_changed = 1; | |
1276 | evp = (struct prefix_evpn *)&rn->p; | |
1277 | ||
1278 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1279 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1280 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1281 | if (tmp_pi->peer == bgp->peer_self |
1282 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1283 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1284 | local_pi = tmp_pi; | |
1285 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1286 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1287 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1288 | remote_pi = tmp_pi; | |
50f74cf1 | 1289 | } |
1290 | ||
6f94b685 | 1291 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1292 | * An ES route has esi + vtep_ip as the key, |
1293 | * We shouldn't see the same route from any other vtep. | |
1294 | */ | |
40381db7 | 1295 | if (remote_pi) { |
af4c2728 | 1296 | flog_err( |
e50f7cfd | 1297 | EC_BGP_ES_INVALID, |
14454c9f DS |
1298 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1299 | bgp->vrf_id, | |
1300 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1301 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1302 | return -1; |
1303 | } | |
1304 | ||
40381db7 | 1305 | if (!local_pi && !add) |
50f74cf1 | 1306 | return 0; |
1307 | ||
1308 | /* create or update the entry */ | |
40381db7 | 1309 | if (!local_pi) { |
50f74cf1 | 1310 | |
1311 | /* Add or update attribute to hash */ | |
1312 | attr_new = bgp_attr_intern(attr); | |
1313 | ||
1314 | /* Create new route with its attribute. */ | |
40381db7 DS |
1315 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1316 | bgp->peer_self, attr_new, rn); | |
1317 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1318 | |
1319 | /* add the newly created path to the route-node */ | |
40381db7 | 1320 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1321 | } else { |
40381db7 DS |
1322 | tmp_pi = local_pi; |
1323 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1324 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1325 | *route_changed = 0; |
1326 | else { | |
1327 | /* The attribute has changed. | |
1328 | * Add (or update) attribute to hash. */ | |
1329 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1330 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1331 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1332 | |
1333 | /* Restore route, if needed. */ | |
40381db7 DS |
1334 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1335 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1336 | |
1337 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1338 | bgp_attr_unintern(&tmp_pi->attr); |
1339 | tmp_pi->attr = attr_new; | |
1340 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1341 | } |
1342 | } | |
1343 | ||
1344 | /* Return back the route entry. */ | |
40381db7 | 1345 | *ri = tmp_pi; |
50f74cf1 | 1346 | return 0; |
1347 | } | |
1348 | ||
1349 | /* update evpn es (type-4) route */ | |
1350 | static int update_evpn_type4_route(struct bgp *bgp, | |
1351 | struct evpnes *es, | |
1352 | struct prefix_evpn *p) | |
1353 | { | |
1354 | int ret = 0; | |
1355 | int route_changed = 0; | |
1356 | char buf[ESI_STR_LEN]; | |
1357 | char buf1[INET6_ADDRSTRLEN]; | |
1358 | afi_t afi = AFI_L2VPN; | |
1359 | safi_t safi = SAFI_EVPN; | |
1360 | struct attr attr; | |
1361 | struct attr *attr_new = NULL; | |
1362 | struct bgp_node *rn = NULL; | |
40381db7 | 1363 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1364 | |
1365 | memset(&attr, 0, sizeof(struct attr)); | |
1366 | ||
1367 | /* Build path-attribute for this route. */ | |
1368 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1369 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1370 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1371 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1372 | ||
1373 | /* Set up extended community. */ | |
1374 | build_evpn_type4_route_extcomm(es, &attr); | |
1375 | ||
1376 | /* First, create (or fetch) route node within the ESI. */ | |
1377 | /* NOTE: There is no RD here. */ | |
1378 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1379 | ||
1380 | /* Create or update route entry. */ | |
40381db7 DS |
1381 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1382 | &pi, &route_changed); | |
50f74cf1 | 1383 | if (ret != 0) { |
1c50c1c0 QY |
1384 | flog_err(EC_BGP_ES_INVALID, |
1385 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1386 | bgp->vrf_id, | |
1387 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1388 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1389 | } |
1390 | ||
40381db7 DS |
1391 | assert(pi); |
1392 | attr_new = pi->attr; | |
50f74cf1 | 1393 | |
1394 | /* Perform route selection; | |
1395 | * this is just to set the flags correctly | |
1396 | * as local route in the ES always wins. | |
1397 | */ | |
1398 | evpn_es_route_select_install(bgp, es, rn); | |
1399 | bgp_unlock_node(rn); | |
1400 | ||
1401 | /* If this is a new route or some attribute has changed, export the | |
1402 | * route to the global table. The route will be advertised to peers | |
1403 | * from there. Note that this table is a 2-level tree (RD-level + | |
1404 | * Prefix-level) similar to L3VPN routes. | |
1405 | */ | |
1406 | if (route_changed) { | |
40381db7 | 1407 | struct bgp_path_info *global_pi; |
50f74cf1 | 1408 | |
1409 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1410 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1411 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1412 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1413 | |
1414 | /* Schedule for processing and unlock node. */ | |
1415 | bgp_process(bgp, rn, afi, safi); | |
1416 | bgp_unlock_node(rn); | |
1417 | } | |
1418 | ||
1419 | /* Unintern temporary. */ | |
1420 | aspath_unintern(&attr.aspath); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
5e53dce3 | 1424 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1425 | struct bgp *bgp_vrf, afi_t afi, |
1426 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1427 | struct attr *attr, int *route_changed) |
342dd0c6 | 1428 | { |
1429 | struct attr *attr_new = NULL; | |
40381db7 | 1430 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1431 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1432 | struct bgp_path_info *local_pi = NULL; |
1433 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1434 | |
5424b7ba | 1435 | *route_changed = 0; |
342dd0c6 | 1436 | /* locate the local route entry if any */ |
6f94b685 DS |
1437 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1438 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1439 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1440 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1441 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1442 | local_pi = tmp_pi; | |
342dd0c6 | 1443 | } |
1444 | ||
2bb9eff4 | 1445 | /* |
0437e105 | 1446 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1447 | * Otherwise see if route attr has changed |
523cafc4 | 1448 | */ |
40381db7 | 1449 | if (!local_pi) { |
342dd0c6 | 1450 | |
5424b7ba MK |
1451 | /* route has changed as this is the first entry */ |
1452 | *route_changed = 1; | |
1453 | ||
342dd0c6 | 1454 | /* Add (or update) attribute to hash. */ |
1455 | attr_new = bgp_attr_intern(attr); | |
1456 | ||
1457 | /* create the route info from attribute */ | |
40381db7 | 1458 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1459 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1460 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1461 | |
b57ba6d2 | 1462 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1463 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1464 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1465 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1466 | pi->extra->num_labels = 1; | |
342dd0c6 | 1467 | |
1468 | /* add the route entry to route node*/ | |
40381db7 | 1469 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1470 | } else { |
1471 | ||
40381db7 DS |
1472 | tmp_pi = local_pi; |
1473 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1474 | |
1475 | /* attribute changed */ | |
1476 | *route_changed = 1; | |
1477 | ||
342dd0c6 | 1478 | /* The attribute has changed. */ |
1479 | /* Add (or update) attribute to hash. */ | |
1480 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1481 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1482 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1483 | |
1484 | /* Restore route, if needed. */ | |
40381db7 DS |
1485 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1486 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1487 | |
1488 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1489 | bgp_attr_unintern(&tmp_pi->attr); |
1490 | tmp_pi->attr = attr_new; | |
1491 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1492 | } |
1493 | } | |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1498 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1499 | struct attr *src_attr) | |
342dd0c6 | 1500 | { |
1501 | afi_t afi = AFI_L2VPN; | |
1502 | safi_t safi = SAFI_EVPN; | |
1503 | struct attr attr; | |
1504 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1505 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1506 | int route_changed = 0; |
342dd0c6 | 1507 | |
5e53dce3 T |
1508 | bgp_evpn = bgp_get_evpn(); |
1509 | if (!bgp_evpn) | |
faafdfa8 | 1510 | return 0; |
342dd0c6 | 1511 | |
2f69f6d3 | 1512 | /* Build path attribute for this route - use the source attr, if |
1513 | * present, else treat as locally originated. | |
1514 | */ | |
1515 | if (src_attr) | |
1516 | bgp_attr_dup(&attr, src_attr); | |
1517 | else { | |
1518 | memset(&attr, 0, sizeof(struct attr)); | |
1519 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1520 | } | |
1521 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1522 | attr.nexthop = bgp_vrf->originator_ip; |
1523 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1524 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1525 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1526 | ||
1527 | /* Setup RT and encap extended community */ | |
1528 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1529 | ||
1530 | /* get the route node in global table */ | |
5e53dce3 | 1531 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1532 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1533 | assert(rn); |
1534 | ||
1535 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1536 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1537 | &route_changed); |
342dd0c6 | 1538 | |
1539 | /* schedule for processing and unlock node */ | |
5424b7ba | 1540 | if (route_changed) { |
5e53dce3 | 1541 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1542 | bgp_unlock_node(rn); |
1543 | } | |
342dd0c6 | 1544 | |
1545 | /* uninten temporary */ | |
5ee65f6f | 1546 | if (!src_attr) |
1547 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1548 | return 0; |
1549 | } | |
1550 | ||
128ea8ab | 1551 | /* |
1552 | * Create or update EVPN route entry. This could be in the VNI route table | |
1553 | * or the global route table. | |
1554 | */ | |
d62a17ae | 1555 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1556 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1557 | struct attr *attr, int add, |
40381db7 | 1558 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1559 | uint32_t seq) |
d62a17ae | 1560 | { |
40381db7 DS |
1561 | struct bgp_path_info *tmp_pi; |
1562 | struct bgp_path_info *local_pi; | |
d62a17ae | 1563 | struct attr *attr_new; |
b57ba6d2 | 1564 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1565 | uint32_t num_labels = 1; |
d62a17ae | 1566 | int route_change = 1; |
d7c0a89a | 1567 | uint8_t sticky = 0; |
b57ba6d2 | 1568 | struct prefix_evpn *evp; |
d62a17ae | 1569 | |
40381db7 | 1570 | *pi = NULL; |
b57ba6d2 MK |
1571 | evp = (struct prefix_evpn *)&rn->p; |
1572 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1573 | |
f07e1c99 | 1574 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1575 | local_pi = NULL; |
6f94b685 DS |
1576 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1577 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1578 | if (tmp_pi->peer == bgp->peer_self |
1579 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1580 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1581 | local_pi = tmp_pi; | |
d62a17ae | 1582 | } |
1583 | ||
1584 | /* If route doesn't exist already, create a new one, if told to. | |
1585 | * Otherwise act based on whether the attributes of the route have | |
1586 | * changed or not. | |
1587 | */ | |
40381db7 | 1588 | if (!local_pi && !add) |
d62a17ae | 1589 | return 0; |
1590 | ||
f07e1c99 | 1591 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1592 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1593 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1594 | |
40381db7 | 1595 | if (!local_pi) { |
d62a17ae | 1596 | /* Add (or update) attribute to hash. */ |
1597 | attr_new = bgp_attr_intern(attr); | |
1598 | ||
1599 | /* Extract MAC mobility sequence number, if any. */ | |
1600 | attr_new->mm_seqnum = | |
1601 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1602 | attr_new->sticky = sticky; | |
1603 | ||
1604 | /* Create new route with its attribute. */ | |
40381db7 | 1605 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1606 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1607 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1608 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1609 | |
1610 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1611 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1612 | |
1613 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1614 | * Only attach second label if we are advertising two labels for | |
1615 | * type-2 routes. | |
1616 | */ | |
996c9314 LB |
1617 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1618 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1619 | vni_t l3vni; |
1620 | ||
1621 | l3vni = bgpevpn_get_l3vni(vpn); | |
1622 | if (l3vni) { | |
1623 | vni2label(l3vni, &label[1]); | |
1624 | num_labels++; | |
1625 | } | |
1626 | } | |
d62a17ae | 1627 | |
40381db7 DS |
1628 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1629 | tmp_pi->extra->num_labels = num_labels; | |
1630 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1631 | } else { |
40381db7 DS |
1632 | tmp_pi = local_pi; |
1633 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1634 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1635 | route_change = 0; |
1636 | else { | |
c48d9f5f MK |
1637 | /* |
1638 | * The attributes have changed, type-2 routes needs to | |
1639 | * be advertised with right labels. | |
1640 | */ | |
1641 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1642 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1643 | && CHECK_FLAG(vpn->flags, | |
1644 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1645 | vni_t l3vni; |
1646 | ||
1647 | l3vni = bgpevpn_get_l3vni(vpn); | |
1648 | if (l3vni) { | |
1649 | vni2label(l3vni, &label[1]); | |
1650 | num_labels++; | |
1651 | } | |
1652 | } | |
40381db7 DS |
1653 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1654 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1655 | |
d62a17ae | 1656 | /* The attribute has changed. */ |
1657 | /* Add (or update) attribute to hash. */ | |
1658 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1659 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1660 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1661 | |
f07e1c99 | 1662 | /* Extract MAC mobility sequence number, if any. */ |
1663 | attr_new->mm_seqnum = | |
1664 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1665 | attr_new->sticky = sticky; | |
1666 | ||
d62a17ae | 1667 | /* Restore route, if needed. */ |
40381db7 DS |
1668 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1669 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1670 | |
1671 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1672 | bgp_attr_unintern(&tmp_pi->attr); |
1673 | tmp_pi->attr = attr_new; | |
1674 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1675 | } |
1676 | } | |
1677 | ||
1678 | /* Return back the route entry. */ | |
40381db7 | 1679 | *pi = tmp_pi; |
d62a17ae | 1680 | return route_change; |
128ea8ab | 1681 | } |
1682 | ||
ec0ab544 AK |
1683 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1684 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1685 | { | |
1686 | struct bgp_path_info *tmp_ri; | |
1687 | struct bgp_path_info *curr_select = NULL; | |
1688 | ||
1689 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1690 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1691 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1692 | curr_select = tmp_ri; | |
1693 | break; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1698 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1699 | evpn_zebra_install(bgp, vpn, | |
1700 | (struct prefix_evpn *)&rn->p, | |
1701 | curr_select); | |
1702 | } | |
1703 | ||
6d8c603a AK |
1704 | /* |
1705 | * If the local route was not selected evict it and tell zebra to re-add | |
1706 | * the best remote dest. | |
1707 | * | |
1708 | * Typically a local path added by zebra is expected to be selected as | |
1709 | * best. In which case when a remote path wins as best (later) | |
1710 | * evpn_route_select_install itself evicts the older-local-best path. | |
1711 | * | |
1712 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1713 | * is possible that the local path is no longer the "older" best path. | |
1714 | * It is a path that was never designated as best and hence requires | |
1715 | * additional handling to prevent bgp from injecting and holding on to a | |
1716 | * non-best local path. | |
1717 | */ | |
1718 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1719 | struct bgpevpn *vpn, | |
1720 | struct bgp_node *rn, | |
9a8897aa | 1721 | struct bgp_path_info *local_pi) |
6d8c603a | 1722 | { |
6d8c603a AK |
1723 | char buf[PREFIX_STRLEN]; |
1724 | ||
6d8c603a AK |
1725 | /* local path was not picked as the winner; kick it out */ |
1726 | if (bgp_debug_zebra(NULL)) { | |
1727 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1728 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1729 | } | |
6d8c603a AK |
1730 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1731 | bgp_path_info_reap(rn, local_pi); | |
1732 | ||
1733 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1734 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1735 | } |
1736 | ||
128ea8ab | 1737 | /* |
1738 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1739 | * and schedule for processing. | |
1740 | */ | |
d62a17ae | 1741 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1742 | struct prefix_evpn *p, uint8_t flags, |
1743 | uint32_t seq) | |
128ea8ab | 1744 | { |
d62a17ae | 1745 | struct bgp_node *rn; |
1746 | struct attr attr; | |
1747 | struct attr *attr_new; | |
1ec31309 | 1748 | int add_l3_ecomm = 0; |
40381db7 | 1749 | struct bgp_path_info *pi; |
d62a17ae | 1750 | afi_t afi = AFI_L2VPN; |
1751 | safi_t safi = SAFI_EVPN; | |
1752 | int route_change; | |
128ea8ab | 1753 | |
d62a17ae | 1754 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1755 | |
d62a17ae | 1756 | /* Build path-attribute for this route. */ |
1757 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1758 | attr.nexthop = vpn->originator_ip; | |
1759 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1760 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1761 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1762 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1763 | attr.router_flag = CHECK_FLAG(flags, |
1764 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1765 | |
1766 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1767 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1768 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1769 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1770 | } | |
be41eb68 | 1771 | |
1ec31309 | 1772 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1773 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1774 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1775 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1776 | |
1ec31309 | 1777 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1778 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1779 | * these routes. | |
1780 | */ | |
1781 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1782 | (is_evpn_prefix_ipaddr_v4(p) || |
1783 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1784 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1785 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1786 | add_l3_ecomm = 1; |
1787 | ||
1788 | /* Set up extended community. */ | |
1789 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1790 | |
d62a17ae | 1791 | /* First, create (or fetch) route node within the VNI. */ |
1792 | /* NOTE: There is no RD here. */ | |
1793 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1794 | |
d62a17ae | 1795 | /* Create or update route entry. */ |
1796 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1797 | 1, &pi, flags, seq); |
1798 | assert(pi); | |
1799 | attr_new = pi->attr; | |
128ea8ab | 1800 | |
6d8c603a AK |
1801 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1802 | bgp_path_info_lock(pi); | |
d62a17ae | 1803 | /* Perform route selection; this is just to set the flags correctly |
1804 | * as local route in the VNI always wins. | |
1805 | */ | |
1806 | evpn_route_select_install(bgp, vpn, rn); | |
6d8c603a | 1807 | /* |
9a8897aa AK |
1808 | * If the new local route was not selected evict it and tell zebra |
1809 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1810 | * routes. | |
6d8c603a | 1811 | */ |
9a8897aa AK |
1812 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1813 | route_change = 0; | |
1814 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1815 | } | |
6d8c603a AK |
1816 | bgp_path_info_unlock(pi); |
1817 | ||
d62a17ae | 1818 | bgp_unlock_node(rn); |
128ea8ab | 1819 | |
d62a17ae | 1820 | /* If this is a new route or some attribute has changed, export the |
1821 | * route to the global table. The route will be advertised to peers | |
1822 | * from there. Note that this table is a 2-level tree (RD-level + | |
1823 | * Prefix-level) similar to L3VPN routes. | |
1824 | */ | |
1825 | if (route_change) { | |
40381db7 | 1826 | struct bgp_path_info *global_pi; |
128ea8ab | 1827 | |
d62a17ae | 1828 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1829 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1830 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1831 | &global_pi, flags, seq); |
128ea8ab | 1832 | |
d62a17ae | 1833 | /* Schedule for processing and unlock node. */ |
1834 | bgp_process(bgp, rn, afi, safi); | |
1835 | bgp_unlock_node(rn); | |
1836 | } | |
128ea8ab | 1837 | |
d62a17ae | 1838 | /* Unintern temporary. */ |
1839 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1840 | |
d62a17ae | 1841 | return 0; |
128ea8ab | 1842 | } |
1843 | ||
50f74cf1 | 1844 | /* |
1845 | * Delete EVPN route entry. | |
1846 | * The entry can be in ESI/VNI table or the global table. | |
1847 | */ | |
4b7e6066 | 1848 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1849 | struct bgp_node *rn, |
40381db7 | 1850 | struct bgp_path_info **pi) |
342dd0c6 | 1851 | { |
40381db7 | 1852 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1853 | |
40381db7 | 1854 | *pi = NULL; |
342dd0c6 | 1855 | |
50f74cf1 | 1856 | /* Now, find matching route. */ |
6f94b685 DS |
1857 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1858 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1859 | if (tmp_pi->peer == bgp->peer_self |
1860 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1861 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1862 | break; |
1863 | ||
40381db7 | 1864 | *pi = tmp_pi; |
342dd0c6 | 1865 | |
1866 | /* Mark route for delete. */ | |
40381db7 DS |
1867 | if (tmp_pi) |
1868 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1869 | } |
1870 | ||
50f74cf1 | 1871 | |
1872 | ||
1873 | /* Delete EVPN ES (type-4) route */ | |
1874 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1875 | struct evpnes *es, | |
1876 | struct prefix_evpn *p) | |
1877 | { | |
1878 | afi_t afi = AFI_L2VPN; | |
1879 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1880 | struct bgp_path_info *pi; |
50f74cf1 | 1881 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1882 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1883 | ||
1884 | /* First, locate the route node within the ESI. | |
1885 | * If it doesn't exist, ther is nothing to do. | |
1886 | * Note: there is no RD here. | |
1887 | */ | |
1888 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1889 | if (!rn) |
50f74cf1 | 1890 | return 0; |
1891 | ||
1892 | /* Next, locate route node in the global EVPN routing table. | |
1893 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1894 | */ | |
1895 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1896 | (struct prefix *)p, &es->prd); | |
1897 | if (global_rn) { | |
1898 | ||
1899 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1900 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1901 | |
1902 | /* Schedule for processing - withdraws to peers happen from | |
1903 | * this table. | |
1904 | */ | |
40381db7 | 1905 | if (pi) |
50f74cf1 | 1906 | bgp_process(bgp, global_rn, afi, safi); |
1907 | bgp_unlock_node(global_rn); | |
1908 | } | |
1909 | ||
1910 | /* | |
1911 | * Delete route entry in the ESI route table. | |
1912 | * This can just be removed. | |
1913 | */ | |
40381db7 DS |
1914 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1915 | if (pi) | |
1916 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1917 | bgp_unlock_node(rn); |
1918 | return 0; | |
1919 | } | |
1920 | ||
342dd0c6 | 1921 | /* Delete EVPN type5 route */ |
996c9314 | 1922 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1923 | { |
1924 | afi_t afi = AFI_L2VPN; | |
1925 | safi_t safi = SAFI_EVPN; | |
1926 | struct bgp_node *rn = NULL; | |
40381db7 | 1927 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1928 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1929 | |
5e53dce3 T |
1930 | bgp_evpn = bgp_get_evpn(); |
1931 | if (!bgp_evpn) | |
faafdfa8 | 1932 | return 0; |
342dd0c6 | 1933 | |
1934 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 1935 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 1936 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
1937 | if (!rn) | |
1938 | return 0; | |
1939 | ||
5e53dce3 | 1940 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 1941 | if (pi) |
5e53dce3 | 1942 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 1943 | bgp_unlock_node(rn); |
1944 | return 0; | |
1945 | } | |
1946 | ||
128ea8ab | 1947 | /* |
1948 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1949 | * schedule for processing. | |
1950 | */ | |
d62a17ae | 1951 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1952 | struct prefix_evpn *p) | |
1953 | { | |
1954 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1955 | struct bgp_path_info *pi; |
d62a17ae | 1956 | afi_t afi = AFI_L2VPN; |
1957 | safi_t safi = SAFI_EVPN; | |
1958 | ||
1959 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1960 | * there | |
1961 | * is nothing further to do. | |
1962 | */ | |
1963 | /* NOTE: There is no RD here. */ | |
1964 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1965 | if (!rn) | |
1966 | return 0; | |
1967 | ||
1968 | /* Next, locate route node in the global EVPN routing table. Note that | |
1969 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1970 | * L3VPN routes. | |
1971 | */ | |
1972 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1973 | (struct prefix *)p, &vpn->prd); | |
1974 | if (global_rn) { | |
1975 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1976 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 1977 | |
1978 | /* Schedule for processing - withdraws to peers happen from | |
1979 | * this table. | |
1980 | */ | |
40381db7 | 1981 | if (pi) |
d62a17ae | 1982 | bgp_process(bgp, global_rn, afi, safi); |
1983 | bgp_unlock_node(global_rn); | |
1984 | } | |
1985 | ||
1986 | /* Delete route entry in the VNI route table. This can just be removed. | |
1987 | */ | |
40381db7 | 1988 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 1989 | if (pi) { |
40381db7 | 1990 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
1991 | evpn_route_select_install(bgp, vpn, rn); |
1992 | } | |
d62a17ae | 1993 | bgp_unlock_node(rn); |
1994 | ||
1995 | return 0; | |
128ea8ab | 1996 | } |
1997 | ||
1998 | /* | |
1999 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2000 | * be scheduled for advertise to peers. | |
2001 | */ | |
d62a17ae | 2002 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2003 | { | |
2004 | afi_t afi; | |
2005 | safi_t safi; | |
2006 | struct bgp_node *rn; | |
40381db7 | 2007 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2008 | struct attr attr; |
d62a17ae | 2009 | struct attr *attr_new; |
f07e1c99 | 2010 | uint32_t seq; |
1ec31309 | 2011 | int add_l3_ecomm = 0; |
d62a17ae | 2012 | |
2013 | afi = AFI_L2VPN; | |
2014 | safi = SAFI_EVPN; | |
d62a17ae | 2015 | |
2016 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2017 | * routes updated, update corresponding entry in the global table too. | |
2018 | */ | |
2019 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2020 | rn = bgp_route_next(rn)) { | |
2021 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2022 | struct bgp_node *rd_rn; | |
40381db7 | 2023 | struct bgp_path_info *global_pi; |
d62a17ae | 2024 | |
2025 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2026 | continue; | |
2027 | ||
f07e1c99 | 2028 | /* Identify local route. */ |
6f94b685 DS |
2029 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2030 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2031 | if (tmp_pi->peer == bgp->peer_self |
2032 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2033 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2034 | break; |
7ec156a9 | 2035 | } |
d62a17ae | 2036 | |
40381db7 | 2037 | if (!tmp_pi) |
d62a17ae | 2038 | continue; |
2039 | ||
f07e1c99 | 2040 | /* |
2041 | * Build attribute per local route as the MAC mobility and | |
2042 | * some other values could differ for different routes. The | |
2043 | * attributes will be shared in the hash table. | |
2044 | */ | |
2045 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2046 | attr.nexthop = vpn->originator_ip; | |
2047 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2048 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2049 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
2050 | ||
2051 | if (evpn_route_is_sticky(bgp, rn)) | |
2052 | attr.sticky = 1; | |
2053 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2054 | attr.default_gw = 1; | |
2055 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2056 | attr.router_flag = 1; | |
2057 | } | |
2058 | ||
2059 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2060 | * using L3 VNI for type-2 routes also. | |
2061 | */ | |
2062 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2063 | !IN6_IS_ADDR_LINKLOCAL( |
2064 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2065 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2066 | bgpevpn_get_l3vni(vpn)) | |
2067 | add_l3_ecomm = 1; | |
2068 | ||
2069 | /* Set up extended community. */ | |
2070 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2071 | ||
40381db7 | 2072 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2073 | |
2074 | /* Update the route entry. */ | |
40381db7 DS |
2075 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2076 | 0, seq); | |
f07e1c99 | 2077 | |
d62a17ae | 2078 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2079 | * correctly as local route in the VNI always wins. |
d62a17ae | 2080 | */ |
2081 | evpn_route_select_install(bgp, vpn, rn); | |
2082 | ||
40381db7 | 2083 | attr_new = pi->attr; |
d62a17ae | 2084 | |
2085 | /* Update route in global routing table. */ | |
2086 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2087 | (struct prefix *)evp, &vpn->prd); | |
2088 | assert(rd_rn); | |
2089 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2090 | &global_pi, 0, |
f07e1c99 | 2091 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2092 | |
2093 | /* Schedule for processing and unlock node. */ | |
2094 | bgp_process(bgp, rd_rn, afi, safi); | |
2095 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2096 | |
f07e1c99 | 2097 | /* Unintern temporary. */ |
2098 | aspath_unintern(&attr.aspath); | |
2099 | ||
2100 | } | |
d62a17ae | 2101 | |
2102 | return 0; | |
128ea8ab | 2103 | } |
2104 | ||
2105 | /* | |
2106 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2107 | * global routing table. These are also scheduled for withdraw from peers. | |
2108 | */ | |
d62a17ae | 2109 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2110 | { |
d62a17ae | 2111 | afi_t afi; |
2112 | safi_t safi; | |
2113 | struct bgp_node *rdrn, *rn; | |
2114 | struct bgp_table *table; | |
40381db7 | 2115 | struct bgp_path_info *pi; |
128ea8ab | 2116 | |
d62a17ae | 2117 | afi = AFI_L2VPN; |
2118 | safi = SAFI_EVPN; | |
128ea8ab | 2119 | |
d62a17ae | 2120 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2121 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2122 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2123 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2124 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2125 | |
d62a17ae | 2126 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2127 | continue; | |
128ea8ab | 2128 | |
40381db7 DS |
2129 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2130 | if (pi) | |
d62a17ae | 2131 | bgp_process(bgp, rn, afi, safi); |
2132 | } | |
2133 | } | |
128ea8ab | 2134 | |
d62a17ae | 2135 | /* Unlock RD node. */ |
2136 | if (rdrn) | |
2137 | bgp_unlock_node(rdrn); | |
128ea8ab | 2138 | |
d62a17ae | 2139 | return 0; |
128ea8ab | 2140 | } |
2141 | ||
2142 | /* | |
2143 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2144 | * table as well as the per-VNI route table. | |
2145 | */ | |
d62a17ae | 2146 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2147 | { |
d62a17ae | 2148 | afi_t afi; |
2149 | safi_t safi; | |
2150 | struct bgp_node *rn; | |
40381db7 | 2151 | struct bgp_path_info *pi; |
128ea8ab | 2152 | |
d62a17ae | 2153 | afi = AFI_L2VPN; |
2154 | safi = SAFI_EVPN; | |
128ea8ab | 2155 | |
d62a17ae | 2156 | /* First, walk the global route table for this VNI's type-2 local |
2157 | * routes. | |
2158 | * EVPN routes are a 2-level table, first get the RD table. | |
2159 | */ | |
2160 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2161 | |
d62a17ae | 2162 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2163 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2164 | rn = bgp_route_next(rn)) { | |
2165 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2166 | |
d62a17ae | 2167 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2168 | continue; | |
128ea8ab | 2169 | |
40381db7 | 2170 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2171 | |
d62a17ae | 2172 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2173 | if (pi) |
2174 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2175 | } |
128ea8ab | 2176 | |
d62a17ae | 2177 | return 0; |
128ea8ab | 2178 | } |
2179 | ||
50f74cf1 | 2180 | /* |
2181 | * Delete all routes in per ES route-table | |
2182 | */ | |
2183 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2184 | { | |
2185 | struct bgp_node *rn; | |
40381db7 | 2186 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2187 | |
2188 | /* Walk this ES's route table and delete all routes. */ | |
2189 | for (rn = bgp_table_top(es->route_table); rn; | |
2190 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2191 | for (pi = bgp_node_get_bgp_path_info(rn); |
2192 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2193 | bgp_path_info_delete(rn, pi); |
2194 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2195 | } |
2196 | } | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
128ea8ab | 2201 | /* |
2202 | * Delete all routes in the per-VNI route table. | |
2203 | */ | |
d62a17ae | 2204 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2205 | { |
d62a17ae | 2206 | struct bgp_node *rn; |
40381db7 | 2207 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2208 | |
d62a17ae | 2209 | /* Walk this VNI's route table and delete all routes. */ |
2210 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2211 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2212 | for (pi = bgp_node_get_bgp_path_info(rn); |
2213 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2214 | bgp_path_info_delete(rn, pi); |
2215 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2216 | } |
2217 | } | |
128ea8ab | 2218 | |
d62a17ae | 2219 | return 0; |
128ea8ab | 2220 | } |
2221 | ||
2222 | /* | |
2223 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2224 | * export RT getting modified or change to tunnel IP. Note that these | |
2225 | * situations need the route in the per-VNI table as well as the global | |
2226 | * table to be updated (as attributes change). | |
2227 | */ | |
d62a17ae | 2228 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2229 | { |
d62a17ae | 2230 | int ret; |
2231 | struct prefix_evpn p; | |
128ea8ab | 2232 | |
d62a17ae | 2233 | /* Update and advertise the type-3 route (only one) followed by the |
2234 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2235 | * |
2236 | * RT-3 only if doing head-end replication | |
d62a17ae | 2237 | */ |
fd069644 DS |
2238 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
2239 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2240 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2241 | if (ret) | |
2242 | return ret; | |
2243 | } | |
128ea8ab | 2244 | |
d62a17ae | 2245 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2246 | } |
2247 | ||
50f74cf1 | 2248 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2249 | * Also remove all other routes from the per ES table. | |
2250 | * Invoked when ES is deleted. | |
2251 | */ | |
2252 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2253 | { | |
2254 | int ret; | |
2255 | char buf[ESI_STR_LEN]; | |
2256 | struct prefix_evpn p; | |
2257 | ||
2258 | /* Delete and withdraw locally learnt ES route */ | |
2259 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2260 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2261 | if (ret) { | |
e50f7cfd | 2262 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2263 | "%u failed to delete type-4 route for ESI %s", |
2264 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2265 | } |
2266 | ||
2267 | /* Delete all routes from per ES table */ | |
2268 | return delete_all_es_routes(bgp, es); | |
2269 | } | |
2270 | ||
128ea8ab | 2271 | /* |
2272 | * Delete (and withdraw) local routes for specified VNI from the global | |
2273 | * table and per-VNI table. After this, remove all other routes from | |
2274 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2275 | * (advertise-all-vni) being disabled. | |
2276 | */ | |
d62a17ae | 2277 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2278 | { |
d62a17ae | 2279 | int ret; |
2280 | struct prefix_evpn p; | |
128ea8ab | 2281 | |
d62a17ae | 2282 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2283 | * followed by type-3 routes (only one) - for this VNI. | |
2284 | */ | |
2285 | ret = delete_all_type2_routes(bgp, vpn); | |
2286 | if (ret) | |
2287 | return ret; | |
128ea8ab | 2288 | |
d62a17ae | 2289 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2290 | ret = delete_evpn_route(bgp, vpn, &p); | |
2291 | if (ret) | |
2292 | return ret; | |
128ea8ab | 2293 | |
d62a17ae | 2294 | /* Delete all routes from the per-VNI table. */ |
2295 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2296 | } |
2297 | ||
2298 | /* | |
d1911c26 | 2299 | * There is a tunnel endpoint IP address change for this VNI, delete |
2300 | * prior type-3 route (if needed) and update. | |
2301 | * Note: Route re-advertisement happens elsewhere after other processing | |
2302 | * other changes. | |
128ea8ab | 2303 | */ |
d62a17ae | 2304 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2305 | struct in_addr originator_ip) | |
128ea8ab | 2306 | { |
d62a17ae | 2307 | struct prefix_evpn p; |
128ea8ab | 2308 | |
ddd16ed5 MK |
2309 | /* If VNI is not live, we only need to update the originator ip */ |
2310 | if (!is_vni_live(vpn)) { | |
2311 | vpn->originator_ip = originator_ip; | |
2312 | return 0; | |
2313 | } | |
2314 | ||
db0e1937 MK |
2315 | /* Update the tunnel-ip hash */ |
2316 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2317 | bgp_tip_add(bgp, &originator_ip); | |
2318 | ||
2319 | /* filter routes as martian nexthop db has changed */ | |
2320 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2321 | ||
d62a17ae | 2322 | /* Need to withdraw type-3 route as the originator IP is part |
2323 | * of the key. | |
2324 | */ | |
2325 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2326 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2327 | |
d62a17ae | 2328 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2329 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2330 | return 0; |
128ea8ab | 2331 | } |
2332 | ||
50f74cf1 | 2333 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2334 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2335 | struct prefix_evpn *p, |
40381db7 | 2336 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2337 | { |
2338 | int ret = 0; | |
2339 | struct bgp_node *rn = NULL; | |
40381db7 | 2340 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2341 | struct attr *attr_new = NULL; |
2342 | ||
2343 | /* Create (or fetch) route within the VNI. | |
2344 | * NOTE: There is no RD here. | |
2345 | */ | |
2346 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2347 | ||
2348 | /* Check if route entry is already present. */ | |
6f94b685 | 2349 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2350 | if (pi->extra |
2351 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2352 | break; |
2353 | ||
40381db7 | 2354 | if (!pi) { |
50f74cf1 | 2355 | /* Add (or update) attribute to hash. */ |
40381db7 | 2356 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2357 | |
2358 | /* Create new route with its attribute. */ | |
40381db7 DS |
2359 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2360 | parent_pi->peer, attr_new, rn); | |
2361 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2362 | bgp_path_info_extra_get(pi); | |
2363 | pi->extra->parent = parent_pi; | |
2364 | bgp_path_info_add(rn, pi); | |
50f74cf1 | 2365 | } else { |
40381db7 DS |
2366 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2367 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2368 | bgp_unlock_node(rn); |
2369 | return 0; | |
2370 | } | |
2371 | /* The attribute has changed. */ | |
2372 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2373 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2374 | |
2375 | /* Restore route, if needed. */ | |
40381db7 DS |
2376 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2377 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2378 | |
2379 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2380 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2381 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2382 | |
2383 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2384 | bgp_attr_unintern(&pi->attr); |
2385 | pi->attr = attr_new; | |
2386 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2387 | } |
2388 | ||
2389 | /* Perform route selection and update zebra, if required. */ | |
2390 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2391 | return ret; | |
2392 | } | |
2393 | ||
d3135ba3 | 2394 | /* |
2395 | * Install route entry into the VRF routing table and invoke route selection. | |
2396 | */ | |
2397 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2398 | struct prefix_evpn *evp, | |
40381db7 | 2399 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2400 | { |
2401 | struct bgp_node *rn; | |
40381db7 | 2402 | struct bgp_path_info *pi; |
1ec31309 | 2403 | struct attr attr; |
d3135ba3 | 2404 | struct attr *attr_new; |
c4edf708 | 2405 | int ret = 0; |
d3135ba3 | 2406 | struct prefix p; |
2407 | struct prefix *pp = &p; | |
2408 | afi_t afi = 0; | |
2409 | safi_t safi = 0; | |
1eb88002 MK |
2410 | char buf[PREFIX_STRLEN]; |
2411 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2412 | |
2413 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2414 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2415 | |
1eb88002 | 2416 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2417 | zlog_debug( |
2418 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2419 | prefix2str(evp, buf, sizeof(buf)), | |
2420 | prefix2str(pp, buf1, sizeof(buf)), | |
2421 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2422 | } |
2423 | ||
d3135ba3 | 2424 | /* Create (or fetch) route within the VRF. */ |
2425 | /* NOTE: There is no RD here. */ | |
3714a385 | 2426 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2427 | afi = AFI_IP; |
2428 | safi = SAFI_UNICAST; | |
2429 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2430 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2431 | afi = AFI_IP6; |
2432 | safi = SAFI_UNICAST; | |
2433 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2434 | } else | |
2435 | return 0; | |
2436 | ||
1ec31309 | 2437 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2438 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2439 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2440 | * address for the rest of the code to flow through. In the case of IPv4, | |
2441 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2442 | */ |
40381db7 | 2443 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2444 | if (afi == AFI_IP6) |
2445 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2446 | else |
2447 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2448 | |
d3135ba3 | 2449 | /* Check if route entry is already present. */ |
6f94b685 | 2450 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2451 | if (pi->extra |
2452 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2453 | break; |
2454 | ||
40381db7 | 2455 | if (!pi) { |
d3135ba3 | 2456 | /* Add (or update) attribute to hash. */ |
1ec31309 | 2457 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2458 | |
2459 | /* Create new route with its attribute. */ | |
40381db7 DS |
2460 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2461 | parent_pi->peer, attr_new, rn); | |
2462 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2463 | bgp_path_info_extra_get(pi); | |
2464 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2465 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2466 | if (parent_pi->extra) { | |
2467 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2468 | sizeof(pi->extra->label)); | |
2469 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2470 | } |
40381db7 | 2471 | bgp_path_info_add(rn, pi); |
d3135ba3 | 2472 | } else { |
40381db7 DS |
2473 | if (attrhash_cmp(pi->attr, &attr) |
2474 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2475 | bgp_unlock_node(rn); |
2476 | return 0; | |
2477 | } | |
2478 | /* The attribute has changed. */ | |
2479 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2480 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2481 | |
2482 | /* Restore route, if needed. */ | |
40381db7 DS |
2483 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2484 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2485 | |
2486 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2487 | if ((afi == AFI_IP |
2488 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2489 | || (afi == AFI_IP6 | |
2490 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2491 | &attr_new->mp_nexthop_global))) | |
2492 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2493 | |
a9f8ad9f | 2494 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2495 | /* Unintern existing, set to new. */ |
40381db7 DS |
2496 | bgp_attr_unintern(&pi->attr); |
2497 | pi->attr = attr_new; | |
2498 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2499 | } |
2500 | ||
40381db7 | 2501 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2502 | |
d3135ba3 | 2503 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2504 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2505 | |
2506 | return ret; | |
2507 | } | |
2508 | ||
128ea8ab | 2509 | /* |
2510 | * Install route entry into the VNI routing table and invoke route selection. | |
2511 | */ | |
d62a17ae | 2512 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2513 | struct prefix_evpn *p, | |
40381db7 | 2514 | struct bgp_path_info *parent_pi) |
d62a17ae | 2515 | { |
2516 | struct bgp_node *rn; | |
40381db7 | 2517 | struct bgp_path_info *pi; |
d62a17ae | 2518 | struct attr *attr_new; |
2519 | int ret; | |
2520 | ||
2521 | /* Create (or fetch) route within the VNI. */ | |
2522 | /* NOTE: There is no RD here. */ | |
2523 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2524 | ||
2525 | /* Check if route entry is already present. */ | |
6f94b685 | 2526 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2527 | if (pi->extra |
2528 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2529 | break; |
2530 | ||
40381db7 | 2531 | if (!pi) { |
d62a17ae | 2532 | /* Add (or update) attribute to hash. */ |
40381db7 | 2533 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2534 | |
2535 | /* Create new route with its attribute. */ | |
40381db7 DS |
2536 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2537 | parent_pi->peer, attr_new, rn); | |
2538 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2539 | bgp_path_info_extra_get(pi); | |
2540 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2541 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2542 | if (parent_pi->extra) { | |
2543 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2544 | sizeof(pi->extra->label)); | |
2545 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2546 | } |
40381db7 | 2547 | bgp_path_info_add(rn, pi); |
d62a17ae | 2548 | } else { |
40381db7 DS |
2549 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2550 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2551 | bgp_unlock_node(rn); |
2552 | return 0; | |
2553 | } | |
2554 | /* The attribute has changed. */ | |
2555 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2556 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2557 | |
50f74cf1 | 2558 | /* Restore route, if needed. */ |
40381db7 DS |
2559 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2560 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2561 | |
2562 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2563 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2564 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2565 | |
2566 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2567 | bgp_attr_unintern(&pi->attr); |
2568 | pi->attr = attr_new; | |
2569 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2570 | } |
2571 | ||
2572 | /* Perform route selection and update zebra, if required. */ | |
2573 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2574 | ||
2575 | return ret; | |
2576 | } | |
2577 | ||
2578 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2579 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2580 | struct prefix_evpn *p, |
40381db7 | 2581 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2582 | { |
2583 | int ret; | |
2584 | struct bgp_node *rn; | |
40381db7 | 2585 | struct bgp_path_info *pi; |
50f74cf1 | 2586 | |
2587 | if (!es->route_table) | |
2588 | return 0; | |
2589 | ||
2590 | /* Locate route within the ESI. | |
2591 | * NOTE: There is no RD here. | |
2592 | */ | |
2593 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2594 | if (!rn) | |
2595 | return 0; | |
2596 | ||
2597 | /* Find matching route entry. */ | |
6f94b685 | 2598 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2599 | if (pi->extra |
2600 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2601 | break; |
d62a17ae | 2602 | |
40381db7 | 2603 | if (!pi) |
50f74cf1 | 2604 | return 0; |
d62a17ae | 2605 | |
50f74cf1 | 2606 | /* Mark entry for deletion */ |
40381db7 | 2607 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2608 | |
2609 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2610 | ret = evpn_es_route_select_install(bgp, es, rn); |
2611 | ||
2612 | /* Unlock route node. */ | |
2613 | bgp_unlock_node(rn); | |
d62a17ae | 2614 | |
2615 | return ret; | |
128ea8ab | 2616 | } |
2617 | ||
d3135ba3 | 2618 | /* |
2619 | * Uninstall route entry from the VRF routing table and send message | |
2620 | * to zebra, if appropriate. | |
2621 | */ | |
2622 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2623 | struct prefix_evpn *evp, | |
40381db7 | 2624 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2625 | { |
2626 | struct bgp_node *rn; | |
40381db7 | 2627 | struct bgp_path_info *pi; |
c4edf708 | 2628 | int ret = 0; |
d3135ba3 | 2629 | struct prefix p; |
2630 | struct prefix *pp = &p; | |
2631 | afi_t afi = 0; | |
2632 | safi_t safi = 0; | |
1eb88002 MK |
2633 | char buf[PREFIX_STRLEN]; |
2634 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2635 | |
2636 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2637 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2638 | |
1eb88002 | 2639 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2640 | zlog_debug( |
2641 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2642 | prefix2str(evp, buf, sizeof(buf)), | |
2643 | prefix2str(pp, buf1, sizeof(buf)), | |
2644 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2645 | } |
2646 | ||
d3135ba3 | 2647 | /* Locate route within the VRF. */ |
2648 | /* NOTE: There is no RD here. */ | |
3714a385 | 2649 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2650 | afi = AFI_IP; |
2651 | safi = SAFI_UNICAST; | |
2652 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2653 | } else { | |
2654 | afi = AFI_IP6; | |
2655 | safi = SAFI_UNICAST; | |
2656 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2657 | } | |
2658 | ||
2659 | if (!rn) | |
2660 | return 0; | |
2661 | ||
2662 | /* Find matching route entry. */ | |
6f94b685 | 2663 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2664 | if (pi->extra |
2665 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2666 | break; |
2667 | ||
40381db7 | 2668 | if (!pi) |
d3135ba3 | 2669 | return 0; |
2670 | ||
40381db7 | 2671 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2672 | |
d3135ba3 | 2673 | /* Mark entry for deletion */ |
40381db7 | 2674 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2675 | |
2676 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2677 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2678 | |
2679 | /* Unlock route node. */ | |
2680 | bgp_unlock_node(rn); | |
2681 | ||
2682 | return ret; | |
2683 | } | |
2684 | ||
128ea8ab | 2685 | /* |
2686 | * Uninstall route entry from the VNI routing table and send message | |
2687 | * to zebra, if appropriate. | |
2688 | */ | |
d62a17ae | 2689 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2690 | struct prefix_evpn *p, | |
40381db7 | 2691 | struct bgp_path_info *parent_pi) |
128ea8ab | 2692 | { |
d62a17ae | 2693 | struct bgp_node *rn; |
40381db7 | 2694 | struct bgp_path_info *pi; |
d62a17ae | 2695 | int ret; |
128ea8ab | 2696 | |
d62a17ae | 2697 | /* Locate route within the VNI. */ |
2698 | /* NOTE: There is no RD here. */ | |
2699 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2700 | if (!rn) | |
2701 | return 0; | |
128ea8ab | 2702 | |
d62a17ae | 2703 | /* Find matching route entry. */ |
6f94b685 | 2704 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2705 | if (pi->extra |
2706 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2707 | break; |
128ea8ab | 2708 | |
40381db7 | 2709 | if (!pi) |
d62a17ae | 2710 | return 0; |
128ea8ab | 2711 | |
d62a17ae | 2712 | /* Mark entry for deletion */ |
40381db7 | 2713 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2714 | |
d62a17ae | 2715 | /* Perform route selection and update zebra, if required. */ |
2716 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2717 | |
d62a17ae | 2718 | /* Unlock route node. */ |
2719 | bgp_unlock_node(rn); | |
128ea8ab | 2720 | |
d62a17ae | 2721 | return ret; |
128ea8ab | 2722 | } |
2723 | ||
50f74cf1 | 2724 | /* |
2725 | * Given a prefix, see if it belongs to ES. | |
2726 | */ | |
2727 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2728 | struct evpnes *es) | |
2729 | { | |
2730 | /* if not an ES route return false */ | |
2731 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2732 | return 0; | |
2733 | ||
2734 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2735 | return 1; | |
2736 | ||
2737 | return 0; | |
2738 | } | |
2739 | ||
5ba238b7 MK |
2740 | /* |
2741 | * Given a route entry and a VRF, see if this route entry should be | |
2742 | * imported into the VRF i.e., RTs match. | |
2743 | */ | |
4b7e6066 | 2744 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2745 | struct bgp_path_info *pi) |
5ba238b7 | 2746 | { |
40381db7 | 2747 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2748 | struct ecommunity *ecom; |
2749 | int i; | |
2750 | ||
2751 | assert(attr); | |
2752 | /* Route should have valid RT to be even considered. */ | |
2753 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2754 | return 0; | |
2755 | ||
2756 | ecom = attr->ecommunity; | |
2757 | if (!ecom || !ecom->size) | |
2758 | return 0; | |
2759 | ||
2760 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2761 | * matches, we're done. | |
2762 | */ | |
2763 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2764 | uint8_t *pnt; |
2765 | uint8_t type, sub_type; | |
5ba238b7 MK |
2766 | struct ecommunity_val *eval; |
2767 | struct ecommunity_val eval_tmp; | |
2768 | struct vrf_irt_node *irt; | |
2769 | ||
2770 | /* Only deal with RTs */ | |
2771 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2772 | eval = (struct ecommunity_val *)(ecom->val | |
2773 | + (i * ECOMMUNITY_SIZE)); | |
2774 | type = *pnt++; | |
2775 | sub_type = *pnt++; | |
2776 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2777 | continue; | |
2778 | ||
2779 | /* See if this RT matches specified VNIs import RTs */ | |
2780 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2781 | if (irt) |
5ba238b7 MK |
2782 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2783 | return 1; | |
2784 | ||
2785 | /* Also check for non-exact match. In this, we mask out the AS | |
2786 | * and | |
2787 | * only check on the local-admin sub-field. This is to | |
2788 | * facilitate using | |
2789 | * VNI as the RT for EBGP peering too. | |
2790 | */ | |
2791 | irt = NULL; | |
2792 | if (type == ECOMMUNITY_ENCODE_AS | |
2793 | || type == ECOMMUNITY_ENCODE_AS4 | |
2794 | || type == ECOMMUNITY_ENCODE_IP) { | |
2795 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2796 | mask_ecom_global_admin(&eval_tmp, eval); | |
2797 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2798 | } | |
5d9cbca2 | 2799 | if (irt) |
5ba238b7 MK |
2800 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2801 | return 1; | |
2802 | } | |
2803 | ||
2804 | return 0; | |
2805 | } | |
2806 | ||
128ea8ab | 2807 | /* |
2808 | * Given a route entry and a VNI, see if this route entry should be | |
2809 | * imported into the VNI i.e., RTs match. | |
2810 | */ | |
d62a17ae | 2811 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2812 | struct bgp_path_info *pi) |
d62a17ae | 2813 | { |
40381db7 | 2814 | struct attr *attr = pi->attr; |
d62a17ae | 2815 | struct ecommunity *ecom; |
2816 | int i; | |
2817 | ||
2818 | assert(attr); | |
2819 | /* Route should have valid RT to be even considered. */ | |
2820 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2821 | return 0; | |
2822 | ||
2823 | ecom = attr->ecommunity; | |
2824 | if (!ecom || !ecom->size) | |
2825 | return 0; | |
2826 | ||
2827 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2828 | * matches, we're done. | |
2829 | */ | |
2830 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2831 | uint8_t *pnt; |
2832 | uint8_t type, sub_type; | |
d62a17ae | 2833 | struct ecommunity_val *eval; |
2834 | struct ecommunity_val eval_tmp; | |
2835 | struct irt_node *irt; | |
2836 | ||
2837 | /* Only deal with RTs */ | |
2838 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2839 | eval = (struct ecommunity_val *)(ecom->val | |
2840 | + (i * ECOMMUNITY_SIZE)); | |
2841 | type = *pnt++; | |
2842 | sub_type = *pnt++; | |
2843 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2844 | continue; | |
2845 | ||
2846 | /* See if this RT matches specified VNIs import RTs */ | |
2847 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2848 | if (irt) |
d62a17ae | 2849 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2850 | return 1; | |
2851 | ||
2852 | /* Also check for non-exact match. In this, we mask out the AS | |
2853 | * and | |
2854 | * only check on the local-admin sub-field. This is to | |
2855 | * facilitate using | |
2856 | * VNI as the RT for EBGP peering too. | |
2857 | */ | |
2858 | irt = NULL; | |
2859 | if (type == ECOMMUNITY_ENCODE_AS | |
2860 | || type == ECOMMUNITY_ENCODE_AS4 | |
2861 | || type == ECOMMUNITY_ENCODE_IP) { | |
2862 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2863 | mask_ecom_global_admin(&eval_tmp, eval); | |
2864 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2865 | } | |
b1ab0dfe | 2866 | if (irt) |
d62a17ae | 2867 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2868 | return 1; | |
2869 | } | |
2870 | ||
2871 | return 0; | |
128ea8ab | 2872 | } |
2873 | ||
50f74cf1 | 2874 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2875 | struct evpnes *es, | |
2876 | int install) | |
2877 | { | |
2878 | int ret; | |
2879 | afi_t afi; | |
2880 | safi_t safi; | |
2881 | char buf[PREFIX_STRLEN]; | |
2882 | char buf1[ESI_STR_LEN]; | |
2883 | struct bgp_node *rd_rn, *rn; | |
2884 | struct bgp_table *table; | |
40381db7 | 2885 | struct bgp_path_info *pi; |
50f74cf1 | 2886 | |
2887 | afi = AFI_L2VPN; | |
2888 | safi = SAFI_EVPN; | |
2889 | ||
2bb9eff4 DS |
2890 | /* |
2891 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2892 | * imported into this VRF. Note that we need to loop through all global |
2893 | * routes to determine which route matches the import rt on vrf | |
2894 | */ | |
2895 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2896 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 2897 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 2898 | if (!table) |
2899 | continue; | |
2900 | ||
2901 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2902 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2903 | ||
6f94b685 DS |
2904 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2905 | pi = pi->next) { | |
2bb9eff4 DS |
2906 | /* |
2907 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2908 | * this ES. |
2909 | */ | |
40381db7 DS |
2910 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2911 | && pi->type == ZEBRA_ROUTE_BGP | |
2912 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2913 | continue; |
2914 | ||
2bb9eff4 DS |
2915 | if (!is_prefix_matching_for_es(evp, es)) |
2916 | continue; | |
50f74cf1 | 2917 | |
2bb9eff4 DS |
2918 | if (install) |
2919 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2920 | bgp, es, evp, pi); |
2bb9eff4 DS |
2921 | else |
2922 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2923 | bgp, es, evp, pi); |
2bb9eff4 DS |
2924 | |
2925 | if (ret) { | |
af4c2728 | 2926 | flog_err( |
e50f7cfd | 2927 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2928 | "Failed to %s EVPN %s route in ESI %s", |
2929 | install ? "install" | |
2930 | : "uninstall", | |
2931 | prefix2str(evp, buf, | |
2932 | sizeof(buf)), | |
2933 | esi_to_str(&es->esi, buf1, | |
2934 | sizeof(buf1))); | |
2935 | return ret; | |
50f74cf1 | 2936 | } |
2937 | } | |
2938 | } | |
2939 | } | |
2940 | return 0; | |
2941 | } | |
2942 | ||
5ba238b7 MK |
2943 | /* |
2944 | * Install or uninstall mac-ip routes are appropriate for this | |
2945 | * particular VRF. | |
2946 | */ | |
996c9314 | 2947 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2948 | { |
2949 | afi_t afi; | |
2950 | safi_t safi; | |
2951 | struct bgp_node *rd_rn, *rn; | |
2952 | struct bgp_table *table; | |
40381db7 | 2953 | struct bgp_path_info *pi; |
5ba238b7 MK |
2954 | int ret; |
2955 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 2956 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2957 | |
2958 | afi = AFI_L2VPN; | |
2959 | safi = SAFI_EVPN; | |
5e53dce3 T |
2960 | bgp_evpn = bgp_get_evpn(); |
2961 | if (!bgp_evpn) | |
5ba238b7 MK |
2962 | return -1; |
2963 | ||
2964 | /* Walk entire global routing table and evaluate routes which could be | |
2965 | * imported into this VRF. Note that we need to loop through all global | |
2966 | * routes to determine which route matches the import rt on vrf | |
2967 | */ | |
5e53dce3 | 2968 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 2969 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 2970 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
2971 | if (!table) |
2972 | continue; | |
2973 | ||
2974 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2975 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2976 | ||
1eb88002 | 2977 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2978 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2979 | || evp->prefix.route_type | |
2980 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2981 | continue; |
2982 | ||
1eb88002 | 2983 | /* if not a mac+ip route skip this route */ |
3714a385 | 2984 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2985 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2986 | continue; |
2987 | ||
6f94b685 DS |
2988 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2989 | pi = pi->next) { | |
5ba238b7 | 2990 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2991 | * this VRF. |
2992 | */ | |
40381db7 DS |
2993 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2994 | && pi->type == ZEBRA_ROUTE_BGP | |
2995 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2996 | continue; |
2997 | ||
40381db7 | 2998 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
5ba238b7 | 2999 | if (install) |
996c9314 | 3000 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3001 | bgp_vrf, evp, pi); |
5ba238b7 | 3002 | else |
996c9314 | 3003 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3004 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3005 | |
3006 | if (ret) { | |
af4c2728 | 3007 | flog_err( |
e50f7cfd | 3008 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3009 | "Failed to %s EVPN %s route in VRF %s", |
3010 | install ? "install" | |
3011 | : "uninstall", | |
3012 | prefix2str(evp, buf, | |
3013 | sizeof(buf)), | |
996c9314 LB |
3014 | vrf_id_to_name( |
3015 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3016 | return ret; |
3017 | } | |
3018 | } | |
3019 | } | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | return 0; | |
3024 | } | |
3025 | ||
128ea8ab | 3026 | /* |
3027 | * Install or uninstall routes of specified type that are appropriate for this | |
3028 | * particular VNI. | |
3029 | */ | |
d62a17ae | 3030 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3031 | struct bgpevpn *vpn, | |
3032 | bgp_evpn_route_type rtype, | |
3033 | int install) | |
3034 | { | |
0291c246 MK |
3035 | afi_t afi; |
3036 | safi_t safi; | |
3037 | struct bgp_node *rd_rn, *rn; | |
3038 | struct bgp_table *table; | |
40381db7 | 3039 | struct bgp_path_info *pi; |
0291c246 | 3040 | int ret; |
d62a17ae | 3041 | |
3042 | afi = AFI_L2VPN; | |
3043 | safi = SAFI_EVPN; | |
3044 | ||
3045 | /* Walk entire global routing table and evaluate routes which could be | |
3046 | * imported into this VPN. Note that we cannot just look at the routes | |
3047 | * for | |
3048 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3049 | * RD. | |
3050 | */ | |
3051 | /* EVPN routes are a 2-level table. */ | |
3052 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3053 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3054 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3055 | if (!table) |
3056 | continue; | |
3057 | ||
3058 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3059 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3060 | ||
3061 | if (evp->prefix.route_type != rtype) | |
3062 | continue; | |
3063 | ||
6f94b685 DS |
3064 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3065 | pi = pi->next) { | |
d62a17ae | 3066 | /* Consider "valid" remote routes applicable for |
3067 | * this VNI. */ | |
40381db7 DS |
3068 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3069 | && pi->type == ZEBRA_ROUTE_BGP | |
3070 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3071 | continue; |
3072 | ||
40381db7 | 3073 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3074 | if (install) |
3075 | ret = install_evpn_route_entry( | |
40381db7 | 3076 | bgp, vpn, evp, pi); |
d62a17ae | 3077 | else |
3078 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3079 | bgp, vpn, evp, pi); |
d62a17ae | 3080 | |
3081 | if (ret) { | |
af4c2728 | 3082 | flog_err( |
e50f7cfd | 3083 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3084 | "%u: Failed to %s EVPN %s route in VNI %u", |
3085 | bgp->vrf_id, | |
3086 | install ? "install" | |
3087 | : "uninstall", | |
3088 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3089 | ? "MACIP" | |
3090 | : "IMET", | |
3091 | vpn->vni); | |
3092 | return ret; | |
3093 | } | |
3094 | } | |
3095 | } | |
3096 | } | |
3097 | } | |
3098 | ||
3099 | return 0; | |
128ea8ab | 3100 | } |
3101 | ||
50f74cf1 | 3102 | /* Install any existing remote ES routes applicable for this ES into its routing |
3103 | * table. This is invoked when ES comes up. | |
3104 | */ | |
3105 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3106 | { | |
3107 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3108 | } | |
3109 | ||
3110 | ||
5ba238b7 | 3111 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3112 | * is invoked upon l3vni-add or l3vni import rt change |
3113 | */ | |
5ba238b7 MK |
3114 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3115 | { | |
3116 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3117 | return 0; | |
3118 | } | |
3119 | ||
128ea8ab | 3120 | /* |
3121 | * Install any existing remote routes applicable for this VNI into its | |
3122 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3123 | * RT is changed. | |
3124 | */ | |
d62a17ae | 3125 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3126 | { |
d62a17ae | 3127 | int ret; |
128ea8ab | 3128 | |
d62a17ae | 3129 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3130 | * for this VNI. | |
3131 | */ | |
3132 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3133 | 1); | |
3134 | if (ret) | |
3135 | return ret; | |
128ea8ab | 3136 | |
d62a17ae | 3137 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3138 | 1); | |
128ea8ab | 3139 | } |
3140 | ||
5ba238b7 MK |
3141 | /* uninstall routes from l3vni vrf. */ |
3142 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3143 | { | |
3144 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3145 | return 0; | |
3146 | } | |
3147 | ||
90e60aa7 | 3148 | /* |
3149 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3150 | * this is invoked is upon an import RT change. | |
3151 | */ | |
d62a17ae | 3152 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3153 | { |
d62a17ae | 3154 | int ret; |
90e60aa7 | 3155 | |
d62a17ae | 3156 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3157 | * applicable | |
3158 | * for this VNI. | |
3159 | */ | |
3160 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3161 | 0); | |
3162 | if (ret) | |
3163 | return ret; | |
90e60aa7 | 3164 | |
d62a17ae | 3165 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3166 | 0); | |
90e60aa7 | 3167 | } |
3168 | ||
50f74cf1 | 3169 | /* Install or unistall route in ES */ |
3170 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3171 | afi_t afi, safi_t safi, | |
3172 | struct prefix_evpn *evp, | |
40381db7 | 3173 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3174 | { |
3175 | int ret = 0; | |
3176 | char buf[ESI_STR_LEN]; | |
3177 | ||
3178 | if (install) | |
40381db7 | 3179 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3180 | else |
40381db7 | 3181 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3182 | |
3183 | if (ret) { | |
af4c2728 | 3184 | flog_err( |
e50f7cfd | 3185 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3186 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3187 | install ? "install" : "uninstall", "ES", | |
3188 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3189 | return ret; |
3190 | } | |
3191 | return 0; | |
3192 | } | |
3193 | ||
d3135ba3 | 3194 | /* |
3195 | * Install or uninstall route in matching VRFs (list). | |
3196 | */ | |
3197 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3198 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3199 | struct bgp_path_info *pi, |
d3135ba3 | 3200 | struct list *vrfs, int install) |
3201 | { | |
3202 | char buf[PREFIX2STR_BUFFER]; | |
3203 | struct bgp *bgp_vrf; | |
3204 | struct listnode *node, *nnode; | |
3205 | ||
90264d64 | 3206 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3207 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3208 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3209 | return 0; |
3210 | ||
90264d64 | 3211 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3212 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3213 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3214 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3215 | return 0; |
3216 | ||
d3135ba3 | 3217 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3218 | int ret; | |
3219 | ||
3220 | if (install) | |
40381db7 | 3221 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3222 | else |
996c9314 | 3223 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3224 | pi); |
d3135ba3 | 3225 | |
3226 | if (ret) { | |
e50f7cfd | 3227 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3228 | "%u: Failed to %s prefix %s in VRF %s", |
3229 | bgp_def->vrf_id, | |
3230 | install ? "install" : "uninstall", | |
3231 | prefix2str(evp, buf, sizeof(buf)), | |
3232 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3233 | return ret; |
3234 | } | |
3235 | } | |
3236 | ||
3237 | return 0; | |
3238 | } | |
3239 | ||
128ea8ab | 3240 | /* |
3241 | * Install or uninstall route in matching VNIs (list). | |
3242 | */ | |
d62a17ae | 3243 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3244 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3245 | struct bgp_path_info *pi, |
d62a17ae | 3246 | struct list *vnis, int install) |
128ea8ab | 3247 | { |
d62a17ae | 3248 | struct bgpevpn *vpn; |
3249 | struct listnode *node, *nnode; | |
128ea8ab | 3250 | |
d62a17ae | 3251 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3252 | int ret; | |
128ea8ab | 3253 | |
d62a17ae | 3254 | if (!is_vni_live(vpn)) |
3255 | continue; | |
128ea8ab | 3256 | |
d62a17ae | 3257 | if (install) |
40381db7 | 3258 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3259 | else |
40381db7 | 3260 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3261 | |
d62a17ae | 3262 | if (ret) { |
1c50c1c0 QY |
3263 | flog_err(EC_BGP_EVPN_FAIL, |
3264 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3265 | bgp->vrf_id, install ? "install" : "uninstall", | |
3266 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3267 | ? "MACIP" | |
3268 | : "IMET", | |
3269 | vpn->vni); | |
d62a17ae | 3270 | return ret; |
3271 | } | |
3272 | } | |
128ea8ab | 3273 | |
d62a17ae | 3274 | return 0; |
128ea8ab | 3275 | } |
3276 | ||
3277 | /* | |
50f74cf1 | 3278 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3279 | */ |
d62a17ae | 3280 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3281 | struct prefix *p, |
40381db7 | 3282 | struct bgp_path_info *pi, int import) |
d62a17ae | 3283 | { |
3284 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3285 | struct attr *attr = pi->attr; |
d62a17ae | 3286 | struct ecommunity *ecom; |
3287 | int i; | |
3288 | ||
3289 | assert(attr); | |
3290 | ||
50f74cf1 | 3291 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3292 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3293 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3294 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3295 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3296 | return 0; |
3297 | ||
3298 | /* If we don't have Route Target, nothing much to do. */ | |
3299 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3300 | return 0; | |
3301 | ||
3302 | ecom = attr->ecommunity; | |
3303 | if (!ecom || !ecom->size) | |
3304 | return -1; | |
3305 | ||
50f74cf1 | 3306 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3307 | * attached to the route */ | |
d62a17ae | 3308 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3309 | uint8_t *pnt; |
3310 | uint8_t type, sub_type; | |
d62a17ae | 3311 | struct ecommunity_val *eval; |
3312 | struct ecommunity_val eval_tmp; | |
996c9314 | 3313 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3314 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3315 | struct evpnes *es; |
d62a17ae | 3316 | |
3317 | /* Only deal with RTs */ | |
3318 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3319 | eval = (struct ecommunity_val *)(ecom->val | |
3320 | + (i * ECOMMUNITY_SIZE)); | |
3321 | type = *pnt++; | |
3322 | sub_type = *pnt++; | |
3323 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3324 | continue; | |
3325 | ||
50f74cf1 | 3326 | /* |
3327 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3328 | * IMET route is imported into VNI table. | |
3329 | * prefix routes are imported into VRF table. | |
523cafc4 | 3330 | */ |
50f74cf1 | 3331 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3332 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3333 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3334 | |
50f74cf1 | 3335 | irt = lookup_import_rt(bgp, eval); |
3336 | if (irt) | |
40381db7 DS |
3337 | install_uninstall_route_in_vnis( |
3338 | bgp, afi, safi, evp, pi, irt->vnis, | |
3339 | import); | |
50f74cf1 | 3340 | |
3341 | vrf_irt = lookup_vrf_import_rt(eval); | |
3342 | if (vrf_irt) | |
40381db7 DS |
3343 | install_uninstall_route_in_vrfs( |
3344 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3345 | import); | |
50f74cf1 | 3346 | |
3347 | /* Also check for non-exact match. | |
3348 | * In this, we mask out the AS and | |
3349 | * only check on the local-admin sub-field. | |
3350 | * This is to facilitate using | |
3351 | * VNI as the RT for EBGP peering too. | |
3352 | */ | |
3353 | irt = NULL; | |
3354 | vrf_irt = NULL; | |
3355 | if (type == ECOMMUNITY_ENCODE_AS | |
3356 | || type == ECOMMUNITY_ENCODE_AS4 | |
3357 | || type == ECOMMUNITY_ENCODE_IP) { | |
3358 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3359 | mask_ecom_global_admin(&eval_tmp, eval); | |
3360 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3361 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3362 | } | |
3363 | ||
3364 | if (irt) | |
40381db7 DS |
3365 | install_uninstall_route_in_vnis( |
3366 | bgp, afi, safi, evp, pi, irt->vnis, | |
3367 | import); | |
50f74cf1 | 3368 | if (vrf_irt) |
40381db7 DS |
3369 | install_uninstall_route_in_vrfs( |
3370 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3371 | import); | |
50f74cf1 | 3372 | } |
3373 | ||
3374 | /* es route is imported into the es table */ | |
3375 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3376 | ||
3377 | /* we will match based on the entire esi to avoid | |
3378 | * imoort of an es route for esi2 into esi1 | |
3379 | */ | |
3380 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3381 | if (es && is_es_local(es)) | |
40381db7 DS |
3382 | install_uninstall_route_in_es( |
3383 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3384 | } |
d62a17ae | 3385 | } |
3386 | ||
3387 | return 0; | |
128ea8ab | 3388 | } |
3389 | ||
2bb9eff4 DS |
3390 | /* |
3391 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3392 | * routes | |
3393 | */ | |
80b140af MK |
3394 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3395 | { | |
5fd9c12b KA |
3396 | /* Delete ipv4 default route and withdraw from peers */ |
3397 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3398 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3399 | SAFI_UNICAST, false); | |
3400 | ||
80b140af | 3401 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3402 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3403 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3404 | |
5fd9c12b KA |
3405 | /* Delete ipv6 default route and withdraw from peers */ |
3406 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3407 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3408 | SAFI_UNICAST, false); | |
3409 | ||
80b140af | 3410 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3411 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3412 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3413 | } |
3414 | ||
2bb9eff4 DS |
3415 | /* |
3416 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3417 | * routes | |
3418 | */ | |
80b140af MK |
3419 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3420 | { | |
3421 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3422 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3423 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3424 | |
5fd9c12b KA |
3425 | /* update ipv4 default route and withdraw from peers */ |
3426 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3427 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3428 | SAFI_UNICAST, true); | |
3429 | ||
80b140af | 3430 | /* update all ipv6 routes */ |
fdf19f06 MK |
3431 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3432 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3433 | |
3434 | /* update ipv6 default route and withdraw from peers */ | |
3435 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3436 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3437 | SAFI_UNICAST, true); | |
3438 | ||
80b140af MK |
3439 | } |
3440 | ||
676f83b9 | 3441 | /* |
3442 | * update and advertise local routes for a VRF as type-5 routes. | |
3443 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3444 | * done in the global route table using the routes which already exist in the | |
3445 | * VRF routing table | |
3446 | */ | |
80b140af | 3447 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3448 | { |
80b140af MK |
3449 | /* skip if the RD is configured */ |
3450 | if (is_vrf_rd_configured(bgp_vrf)) | |
3451 | return; | |
3452 | ||
3453 | /* derive the RD for the VRF based on new router-id */ | |
3454 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3455 | ||
3456 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3457 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3458 | } |
3459 | ||
3460 | /* | |
3461 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3462 | * This is invoked upon VRF RD change. The processing is done only from global | |
3463 | * table. | |
3464 | */ | |
80b140af | 3465 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3466 | { |
80b140af MK |
3467 | /* skip if the RD is configured */ |
3468 | if (is_vrf_rd_configured(bgp_vrf)) | |
3469 | return; | |
3470 | ||
3471 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3472 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3473 | } |
3474 | ||
90e60aa7 | 3475 | /* |
3476 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3477 | * change. Note that the processing is done only on the global route table | |
3478 | * using routes that already exist in the per-VNI table. | |
3479 | */ | |
d62a17ae | 3480 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3481 | { | |
3482 | struct prefix_evpn p; | |
3483 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3484 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3485 | struct attr *attr; |
3486 | afi_t afi = AFI_L2VPN; | |
3487 | safi_t safi = SAFI_EVPN; | |
3488 | ||
3489 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3490 | * attributes to create and advertise the type-3 route for this VNI | |
3491 | * in the global table. | |
fd069644 DS |
3492 | * |
3493 | * RT-3 only if doing head-end replication | |
d62a17ae | 3494 | */ |
fd069644 DS |
3495 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { |
3496 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3497 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3498 | if (!rn) /* unexpected */ | |
3499 | return 0; | |
6f94b685 | 3500 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3501 | if (pi->peer == bgp->peer_self && |
3502 | pi->type == ZEBRA_ROUTE_BGP | |
3503 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3504 | break; | |
3505 | if (!pi) /* unexpected */ | |
3506 | return 0; | |
3507 | attr = pi->attr; | |
d62a17ae | 3508 | |
fd069644 DS |
3509 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3510 | (struct prefix *)&p, &vpn->prd); | |
3511 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3512 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3513 | |
fd069644 DS |
3514 | /* Schedule for processing and unlock node. */ |
3515 | bgp_process(bgp, global_rn, afi, safi); | |
3516 | bgp_unlock_node(global_rn); | |
3517 | } | |
d62a17ae | 3518 | |
3519 | /* Now, walk this VNI's route table and use the route and its attribute | |
3520 | * to create and schedule route in global table. | |
3521 | */ | |
3522 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3523 | rn = bgp_route_next(rn)) { | |
3524 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3525 | ||
3526 | /* Identify MAC-IP local routes. */ | |
3527 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3528 | continue; | |
3529 | ||
6f94b685 | 3530 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3531 | if (pi->peer == bgp->peer_self |
3532 | && pi->type == ZEBRA_ROUTE_BGP | |
3533 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3534 | break; |
40381db7 | 3535 | if (!pi) |
d62a17ae | 3536 | continue; |
3537 | ||
3538 | /* Create route in global routing table using this route entry's | |
3539 | * attribute. | |
3540 | */ | |
40381db7 | 3541 | attr = pi->attr; |
d62a17ae | 3542 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3543 | (struct prefix *)evp, &vpn->prd); | |
3544 | assert(global_rn); | |
3545 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3546 | &global_pi, 0, |
f07e1c99 | 3547 | mac_mobility_seqnum(attr)); |
d62a17ae | 3548 | |
3549 | /* Schedule for processing and unlock node. */ | |
3550 | bgp_process(bgp, global_rn, afi, safi); | |
3551 | bgp_unlock_node(global_rn); | |
3552 | } | |
3553 | ||
3554 | return 0; | |
90e60aa7 | 3555 | } |
3556 | ||
3557 | /* | |
3558 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3559 | * table. Invoked upon router-id change. | |
3560 | */ | |
d62a17ae | 3561 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3562 | { |
d62a17ae | 3563 | int ret; |
3564 | struct prefix_evpn p; | |
3565 | struct bgp_node *global_rn; | |
40381db7 | 3566 | struct bgp_path_info *pi; |
d62a17ae | 3567 | afi_t afi = AFI_L2VPN; |
3568 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3569 | |
d62a17ae | 3570 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3571 | * for this VNI - from the global table. | |
3572 | */ | |
3573 | ret = delete_global_type2_routes(bgp, vpn); | |
3574 | if (ret) | |
3575 | return ret; | |
90e60aa7 | 3576 | |
d62a17ae | 3577 | /* Remove type-3 route for this VNI from global table. */ |
3578 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3579 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3580 | (struct prefix *)&p, &vpn->prd); | |
3581 | if (global_rn) { | |
3582 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3583 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3584 | |
d62a17ae | 3585 | /* Schedule for processing - withdraws to peers happen from |
3586 | * this table. | |
3587 | */ | |
40381db7 | 3588 | if (pi) |
d62a17ae | 3589 | bgp_process(bgp, global_rn, afi, safi); |
3590 | bgp_unlock_node(global_rn); | |
3591 | } | |
90e60aa7 | 3592 | |
d62a17ae | 3593 | return 0; |
90e60aa7 | 3594 | } |
3595 | ||
2d48ee25 | 3596 | /* |
3597 | * Handle router-id change. Update and advertise local routes corresponding | |
3598 | * to this VNI from peers. Note that this is invoked after updating the | |
3599 | * router-id. The routes in the per-VNI table are used to create routes in | |
3600 | * the global table and schedule them. | |
3601 | */ | |
e3b78da8 | 3602 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3603 | { |
e3b78da8 | 3604 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3605 | |
d62a17ae | 3606 | /* Skip VNIs with configured RD. */ |
3607 | if (is_rd_configured(vpn)) | |
3608 | return; | |
2d48ee25 | 3609 | |
d62a17ae | 3610 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3611 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3612 | } |
3613 | ||
3614 | /* | |
3615 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3616 | * to this VNI from peers. Note that this is invoked prior to updating | |
3617 | * the router-id and is done only on the global route table, the routes | |
3618 | * are needed in the per-VNI table to re-advertise with new router id. | |
3619 | */ | |
e3b78da8 | 3620 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3621 | { |
e3b78da8 | 3622 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3623 | |
d62a17ae | 3624 | /* Skip VNIs with configured RD. */ |
3625 | if (is_rd_configured(vpn)) | |
3626 | return; | |
2d48ee25 | 3627 | |
d62a17ae | 3628 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3629 | } |
3630 | ||
fd069644 DS |
3631 | /* |
3632 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3633 | * This is invoked upon flooding mode changing to head-end replication. | |
3634 | */ | |
e3b78da8 | 3635 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3636 | { |
e3b78da8 | 3637 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3638 | struct bgp *bgp = data; |
3639 | struct prefix_evpn p; | |
3640 | ||
3641 | if (!vpn || !is_vni_live(vpn)) | |
3642 | return; | |
3643 | ||
3644 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3645 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3646 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3647 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3648 | } | |
3649 | ||
3650 | /* | |
3651 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3652 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3653 | */ | |
e3b78da8 | 3654 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3655 | { |
e3b78da8 | 3656 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3657 | struct bgp *bgp = data; |
3658 | struct prefix_evpn p; | |
3659 | ||
3660 | if (!vpn || !is_vni_live(vpn)) | |
3661 | return; | |
3662 | ||
3663 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3664 | delete_evpn_route(bgp, vpn, &p); | |
3665 | } | |
3666 | ||
128ea8ab | 3667 | /* |
3668 | * Process received EVPN type-2 route (advertise or withdraw). | |
3669 | */ | |
d62a17ae | 3670 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3671 | struct attr *attr, uint8_t *pfx, int psize, |
3672 | uint32_t addpath_id) | |
d62a17ae | 3673 | { |
3674 | struct prefix_rd prd; | |
3675 | struct prefix_evpn p; | |
554cd77a | 3676 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3677 | uint8_t ipaddr_len; |
3678 | uint8_t macaddr_len; | |
b57ba6d2 | 3679 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3680 | uint32_t num_labels = 0; |
554cd77a | 3681 | uint32_t eth_tag; |
d62a17ae | 3682 | int ret; |
3683 | ||
3684 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3685 | * additional 3 bytes if there is a second label (VNI): | |
3686 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3687 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3688 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3689 | */ | |
3690 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3691 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3692 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3693 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3694 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3695 | return -1; |
3696 | } | |
3697 | ||
554cd77a VB |
3698 | memset(&evpn, 0, sizeof(evpn)); |
3699 | ||
d62a17ae | 3700 | /* Make prefix_rd */ |
3701 | prd.family = AF_UNSPEC; | |
3702 | prd.prefixlen = 64; | |
3703 | memcpy(&prd.val, pfx, 8); | |
3704 | pfx += 8; | |
3705 | ||
3706 | /* Make EVPN prefix. */ | |
3707 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3708 | p.family = AF_EVPN; |
50f74cf1 | 3709 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3710 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3711 | ||
554cd77a VB |
3712 | /* Copy Ethernet Seg Identifier */ |
3713 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3714 | pfx += ESI_LEN; | |
d62a17ae | 3715 | |
554cd77a VB |
3716 | /* Copy Ethernet Tag */ |
3717 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3718 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3719 | pfx += 4; |
3720 | ||
3721 | /* Get the MAC Addr len */ | |
3722 | macaddr_len = *pfx++; | |
3723 | ||
3724 | /* Get the MAC Addr */ | |
28328ea9 | 3725 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3726 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3727 | pfx += ETH_ALEN; |
d62a17ae | 3728 | } else { |
af4c2728 | 3729 | flog_err( |
e50f7cfd | 3730 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3731 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3732 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3733 | return -1; | |
3734 | } | |
3735 | ||
3736 | ||
3737 | /* Get the IP. */ | |
3738 | ipaddr_len = *pfx++; | |
3739 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3740 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3741 | flog_err( |
e50f7cfd | 3742 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3743 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3744 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3745 | return -1; | |
3746 | } | |
3747 | ||
3748 | if (ipaddr_len) { | |
3749 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3750 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3751 | ? IPADDR_V4 |
3752 | : IPADDR_V6; | |
3714a385 | 3753 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3754 | } |
3755 | pfx += ipaddr_len; | |
3756 | ||
b57ba6d2 MK |
3757 | /* Get the VNI(s). Stored as bytes here. */ |
3758 | num_labels++; | |
3759 | memset(label, 0, sizeof(label)); | |
3760 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3761 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3762 | psize -= (33 + ipaddr_len); |
3763 | /* Do we have a second VNI? */ | |
3764 | if (psize) { | |
3765 | num_labels++; | |
3766 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3767 | /* |
3768 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3769 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3770 | * the next field | |
6b11bd8d | 3771 | */ |
b57ba6d2 | 3772 | } |
d62a17ae | 3773 | |
3774 | /* Process the route. */ | |
3775 | if (attr) | |
3776 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3777 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3778 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3779 | else |
3780 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3781 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3782 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3783 | return ret; |
128ea8ab | 3784 | } |
3785 | ||
3786 | /* | |
3787 | * Process received EVPN type-3 route (advertise or withdraw). | |
3788 | */ | |
d62a17ae | 3789 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3790 | struct attr *attr, uint8_t *pfx, int psize, |
3791 | uint32_t addpath_id) | |
d62a17ae | 3792 | { |
3793 | struct prefix_rd prd; | |
3794 | struct prefix_evpn p; | |
d7c0a89a | 3795 | uint8_t ipaddr_len; |
554cd77a | 3796 | uint32_t eth_tag; |
d62a17ae | 3797 | int ret; |
3798 | ||
3799 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3800 | * IP len (1) and IP (4 or 16). | |
3801 | */ | |
3802 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3803 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3804 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3805 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3806 | return -1; |
3807 | } | |
3808 | ||
7fd077aa | 3809 | /* If PMSI is present, log if it is anything other than IR. |
3810 | * Note: We just simply ignore the values as it is not clear if | |
3811 | * doing anything else is better. | |
3812 | */ | |
3813 | if (attr && | |
3814 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3815 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
ade6974d | 3816 | flog_warn( |
e50f7cfd | 3817 | EC_BGP_EVPN_PMSI_PRESENT, |
ade6974d QY |
3818 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
3819 | peer->bgp->vrf_id, peer->host, | |
3820 | attr->pmsi_tnl_type); | |
7fd077aa | 3821 | } |
3822 | } | |
3823 | ||
d62a17ae | 3824 | /* Make prefix_rd */ |
3825 | prd.family = AF_UNSPEC; | |
3826 | prd.prefixlen = 64; | |
3827 | memcpy(&prd.val, pfx, 8); | |
3828 | pfx += 8; | |
3829 | ||
3830 | /* Make EVPN prefix. */ | |
3831 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3832 | p.family = AF_EVPN; |
50f74cf1 | 3833 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3834 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3835 | ||
554cd77a VB |
3836 | /* Copy Ethernet Tag */ |
3837 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3838 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3839 | pfx += 4; |
3840 | ||
3841 | /* Get the IP. */ | |
3842 | ipaddr_len = *pfx++; | |
3843 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3844 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3845 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3846 | } else { |
af4c2728 | 3847 | flog_err( |
e50f7cfd | 3848 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3849 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3850 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3851 | return -1; | |
3852 | } | |
3853 | ||
3854 | /* Process the route. */ | |
3855 | if (attr) | |
3856 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3857 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3858 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3859 | else |
3860 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3861 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3862 | &prd, NULL, 0, NULL); |
d62a17ae | 3863 | return ret; |
128ea8ab | 3864 | } |
3865 | ||
50f74cf1 | 3866 | /* |
3867 | * Process received EVPN type-4 route (advertise or withdraw). | |
3868 | */ | |
3869 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3870 | struct attr *attr, uint8_t *pfx, int psize, | |
3871 | uint32_t addpath_id) | |
3872 | { | |
3873 | int ret; | |
3874 | esi_t esi; | |
3875 | uint8_t ipaddr_len; | |
3876 | struct in_addr vtep_ip; | |
3877 | struct prefix_rd prd; | |
3878 | struct prefix_evpn p; | |
3879 | ||
3880 | /* Type-4 route should be either 23 or 35 bytes | |
3881 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3882 | */ | |
3883 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3884 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3885 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3886 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3887 | return -1; |
3888 | } | |
3889 | ||
3890 | /* Make prefix_rd */ | |
3891 | prd.family = AF_UNSPEC; | |
3892 | prd.prefixlen = 64; | |
3893 | memcpy(&prd.val, pfx, 8); | |
3894 | pfx += 8; | |
3895 | ||
3896 | /* get the ESI */ | |
3897 | memcpy(&esi, pfx, ESI_BYTES); | |
3898 | pfx += ESI_BYTES; | |
3899 | ||
3900 | ||
3901 | /* Get the IP. */ | |
3902 | ipaddr_len = *pfx++; | |
3903 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3904 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3905 | } else { | |
af4c2728 | 3906 | flog_err( |
e50f7cfd | 3907 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 3908 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
3909 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3910 | return -1; | |
3911 | } | |
3912 | ||
3913 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3914 | /* Process the route. */ | |
3915 | if (attr) { | |
3916 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3917 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3918 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3919 | } else { |
50f74cf1 | 3920 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3921 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3922 | &prd, NULL, 0, NULL); | |
3923 | } | |
3924 | return ret; | |
3925 | } | |
3926 | ||
3927 | ||
128ea8ab | 3928 | /* |
3929 | * Process received EVPN type-5 route (advertise or withdraw). | |
3930 | */ | |
d62a17ae | 3931 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3932 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3933 | uint32_t addpath_id) |
d62a17ae | 3934 | { |
3935 | struct prefix_rd prd; | |
3936 | struct prefix_evpn p; | |
3937 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3938 | uint8_t ippfx_len; |
3939 | uint32_t eth_tag; | |
b57ba6d2 | 3940 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3941 | int ret; |
3942 | ||
3943 | /* Type-5 route should be 34 or 58 bytes: | |
3944 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3945 | * GW (4 or 16) and VNI (3). | |
3946 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3947 | */ | |
3948 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3949 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3950 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3951 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3952 | return -1; |
3953 | } | |
3954 | ||
3955 | /* Make prefix_rd */ | |
3956 | prd.family = AF_UNSPEC; | |
3957 | prd.prefixlen = 64; | |
3958 | memcpy(&prd.val, pfx, 8); | |
3959 | pfx += 8; | |
3960 | ||
3961 | /* Make EVPN prefix. */ | |
3962 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3963 | p.family = AF_EVPN; |
50f74cf1 | 3964 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3965 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3966 | ||
3967 | /* Additional information outside of prefix - ESI and GW IP */ | |
3968 | memset(&evpn, 0, sizeof(evpn)); | |
3969 | ||
3970 | /* Fetch ESI */ | |
3971 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3972 | pfx += 10; | |
3973 | ||
3974 | /* Fetch Ethernet Tag. */ | |
3975 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3976 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3977 | pfx += 4; |
3978 | ||
3979 | /* Fetch IP prefix length. */ | |
3980 | ippfx_len = *pfx++; | |
3981 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3982 | flog_err( |
e50f7cfd | 3983 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3984 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3985 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3986 | return -1; | |
3987 | } | |
3714a385 | 3988 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3989 | |
3990 | /* Determine IPv4 or IPv6 prefix */ | |
3991 | /* Since the address and GW are from the same family, this just becomes | |
3992 | * a simple check on the total size. | |
3993 | */ | |
3994 | if (psize == 34) { | |
3714a385 | 3995 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3996 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3997 | pfx += 4; |
3998 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3999 | pfx += 4; | |
d62a17ae | 4000 | } else { |
3714a385 | 4001 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4002 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4003 | pfx += 16; |
4004 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4005 | pfx += 16; | |
d62a17ae | 4006 | } |
4007 | ||
b57ba6d2 MK |
4008 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4009 | memset(&label, 0, sizeof(label)); | |
4010 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4011 | |
4012 | /* | |
4013 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4014 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4015 | * field | |
6b11bd8d | 4016 | */ |
d62a17ae | 4017 | |
4018 | /* Process the route. */ | |
f007bdce | 4019 | if (attr) |
d62a17ae | 4020 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4021 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4022 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4023 | else |
4024 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4025 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4026 | &prd, &label, 1, &evpn); |
d62a17ae | 4027 | |
4028 | return ret; | |
4029 | } | |
4030 | ||
4031 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4032 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4033 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4034 | { |
4035 | int len; | |
4036 | char temp[16]; | |
4037 | struct evpn_addr *p_evpn_p; | |
4038 | ||
4039 | memset(&temp, 0, 16); | |
b03b8898 | 4040 | if (p->family != AF_EVPN) |
d62a17ae | 4041 | return; |
4042 | p_evpn_p = &(p->u.prefix_evpn); | |
4043 | ||
e9fc2840 | 4044 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4045 | IP and GW-IP have to be both ipv4 or ipv6 |
4046 | */ | |
3714a385 | 4047 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4048 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4049 | else |
e9fc2840 | 4050 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4051 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4052 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4053 | stream_put(s, prd->val, 8); | |
0af35d90 | 4054 | if (attr) |
d62a17ae | 4055 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4056 | else | |
4057 | stream_put(s, &temp, 10); | |
3714a385 | 4058 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4059 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4060 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4061 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4062 | else |
3714a385 | 4063 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4064 | if (attr) { |
3714a385 | 4065 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4066 | stream_put_ipv4(s, |
4067 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4068 | else | |
4069 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4070 | } else { | |
3714a385 | 4071 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4072 | stream_put_ipv4(s, 0); |
4073 | else | |
4074 | stream_put(s, &temp, 16); | |
4075 | } | |
4076 | ||
b57ba6d2 | 4077 | if (num_labels) |
d62a17ae | 4078 | stream_put(s, label, 3); |
4079 | else | |
4080 | stream_put3(s, 0); | |
128ea8ab | 4081 | } |
4082 | ||
4083 | /* | |
4084 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4085 | */ | |
e3b78da8 | 4086 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4087 | { |
e3b78da8 | 4088 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4089 | |
d62a17ae | 4090 | /* Remove EVPN routes and schedule for processing. */ |
4091 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4092 | |
d62a17ae | 4093 | /* Clear "live" flag and see if hash needs to be freed. */ |
4094 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4095 | if (!is_vni_configured(vpn)) | |
4096 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4097 | } |
4098 | ||
4099 | /* | |
4100 | * Free a VNI entry; iterator function called during cleanup. | |
4101 | */ | |
e3b78da8 | 4102 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4103 | { |
e3b78da8 | 4104 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4105 | |
d62a17ae | 4106 | delete_all_vni_routes(bgp, vpn); |
4107 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4108 | } |
4109 | ||
c581d8b0 MK |
4110 | /* |
4111 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4112 | */ | |
4113 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4114 | { | |
5e53dce3 | 4115 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4116 | |
c581d8b0 | 4117 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4118 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4119 | ||
4120 | /* Map RT to VRF */ | |
5e53dce3 T |
4121 | bgp_evpn = bgp_get_evpn(); |
4122 | if (!bgp_evpn) | |
10ebe1ab MK |
4123 | return; |
4124 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4125 | } |
4126 | ||
4127 | /* | |
4128 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4129 | */ | |
4130 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4131 | { | |
4132 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4133 | } | |
4134 | ||
4135 | /* | |
4136 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4137 | */ | |
4138 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4139 | { | |
4140 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4141 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4142 | } | |
4143 | ||
4144 | /* | |
4145 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4146 | */ | |
4147 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4148 | { | |
4149 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4150 | } | |
128ea8ab | 4151 | |
f1f8b53c MK |
4152 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4153 | { | |
5e53dce3 | 4154 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4155 | struct listnode *node = NULL; |
4156 | struct bgpevpn *vpn = NULL; | |
4157 | ||
5e53dce3 T |
4158 | bgp_evpn = bgp_get_evpn(); |
4159 | if (!bgp_evpn) | |
f1f8b53c MK |
4160 | return; |
4161 | ||
4992b4ae MK |
4162 | /* update all type-5 routes */ |
4163 | update_advertise_vrf_routes(bgp_vrf); | |
4164 | ||
4165 | /* update all type-2 routes */ | |
f1f8b53c | 4166 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4167 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4168 | } |
4169 | ||
bf1061d8 VB |
4170 | /* |
4171 | * Handle autort change for a given VNI. | |
4172 | */ | |
e3b78da8 | 4173 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4174 | { |
e3b78da8 | 4175 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4176 | |
bf1061d8 VB |
4177 | if (!is_import_rt_configured(vpn)) { |
4178 | if (is_vni_live(vpn)) | |
4179 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4180 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4181 | list_delete_all_node(vpn->import_rtl); |
4182 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4183 | if (is_vni_live(vpn)) | |
4184 | bgp_evpn_install_routes(bgp, vpn); | |
4185 | } | |
4186 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4187 | list_delete_all_node(vpn->export_rtl); |
4188 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4189 | if (is_vni_live(vpn)) | |
4190 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4191 | } | |
4192 | } | |
4193 | ||
128ea8ab | 4194 | /* |
4195 | * Public functions. | |
4196 | */ | |
4197 | ||
5424b7ba | 4198 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4199 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4200 | afi_t afi, safi_t safi) |
4201 | { | |
4202 | int ret = 0; | |
4203 | struct prefix_evpn evp; | |
4204 | char buf[PREFIX_STRLEN]; | |
4205 | ||
31310b25 | 4206 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4207 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4208 | if (ret) { | |
af4c2728 | 4209 | flog_err( |
e50f7cfd | 4210 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4211 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4212 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4213 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4214 | } |
4215 | } | |
4216 | ||
342dd0c6 | 4217 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4218 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4219 | { |
4220 | struct bgp_table *table = NULL; | |
4221 | struct bgp_node *rn = NULL; | |
40381db7 | 4222 | struct bgp_path_info *pi; |
342dd0c6 | 4223 | |
053905d2 | 4224 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4225 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4226 | /* Only care about "selected" routes - non-imported. */ | |
4227 | /* TODO: Support for AddPath for EVPN. */ | |
6f94b685 | 4228 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 DS |
4229 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
4230 | && (!pi->extra || !pi->extra->parent)) { | |
25f2ca53 | 4231 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4232 | afi, safi); | |
4233 | break; | |
4234 | } | |
4235 | } | |
4236 | } | |
5424b7ba | 4237 | } |
342dd0c6 | 4238 | |
5fd9c12b KA |
4239 | /* |
4240 | * evpn - enable advertisement of default g/w | |
4241 | */ | |
4242 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4243 | safi_t safi, bool add) | |
4244 | { | |
4245 | struct prefix ip_prefix; | |
4246 | ||
4247 | /* form the default prefix 0.0.0.0/0 */ | |
4248 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4249 | ip_prefix.family = afi2family(afi); | |
4250 | ||
4251 | if (add) { | |
4252 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4253 | NULL, afi, safi); | |
4254 | } else { | |
4255 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4256 | afi, safi); | |
4257 | } | |
4258 | } | |
4259 | ||
4260 | ||
2f69f6d3 | 4261 | /* |
4262 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4263 | * to this function correspond to those of the source IP prefix (best | |
4264 | * path in the case of the attr. In the case of a local prefix (when we | |
4265 | * are advertising local subnets), the src_attr will be NULL. | |
4266 | */ | |
31310b25 | 4267 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4268 | struct attr *src_attr, afi_t afi, |
4269 | safi_t safi) | |
5424b7ba MK |
4270 | { |
4271 | int ret = 0; | |
4272 | struct prefix_evpn evp; | |
4273 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4274 | |
31310b25 | 4275 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4276 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4277 | if (ret) | |
e50f7cfd | 4278 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4279 | "%u: Failed to create type-5 route for prefix %s", |
4280 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4281 | } |
4282 | ||
2f69f6d3 | 4283 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4284 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4285 | * advertisement is enabled. | |
4286 | */ | |
996c9314 LB |
4287 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4288 | safi_t safi) | |
342dd0c6 | 4289 | { |
4290 | struct bgp_table *table = NULL; | |
4291 | struct bgp_node *rn = NULL; | |
40381db7 | 4292 | struct bgp_path_info *pi; |
342dd0c6 | 4293 | |
053905d2 | 4294 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4295 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4296 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4297 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4298 | * TODO: Support for AddPath for EVPN. |
4299 | */ | |
6f94b685 | 4300 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 DS |
4301 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
4302 | && (!pi->extra || !pi->extra->parent)) { | |
53c84f78 MK |
4303 | |
4304 | /* apply the route-map */ | |
4305 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4306 | int ret = 0; | |
4307 | ||
996c9314 LB |
4308 | ret = route_map_apply( |
4309 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4310 | .map, | |
40381db7 | 4311 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4312 | if (ret == RMAP_DENYMATCH) |
4313 | continue; | |
4314 | } | |
996c9314 | 4315 | bgp_evpn_advertise_type5_route( |
40381db7 | 4316 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4317 | break; |
4318 | } | |
4319 | } | |
31310b25 | 4320 | } |
342dd0c6 | 4321 | } |
4322 | ||
996c9314 | 4323 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4324 | { |
4325 | struct listnode *node, *nnode, *node_to_del; | |
4326 | struct ecommunity *ecom, *ecom_auto; | |
4327 | struct ecommunity_val eval; | |
4328 | ||
bf1061d8 VB |
4329 | if (bgp->advertise_autort_rfc8365) |
4330 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4331 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4332 | ||
4333 | ecom_auto = ecommunity_new(); | |
4334 | ecommunity_add_val(ecom_auto, &eval); | |
4335 | node_to_del = NULL; | |
4336 | ||
4337 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4338 | if (ecommunity_match(ecom, ecom_auto)) { | |
4339 | ecommunity_free(&ecom); | |
4340 | node_to_del = node; | |
4341 | } | |
4342 | } | |
4343 | ||
4344 | if (node_to_del) | |
4345 | list_delete_node(rtl, node_to_del); | |
4346 | ||
4347 | ecommunity_free(&ecom_auto); | |
4348 | } | |
4349 | ||
4350 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4351 | struct ecommunity *ecomadd) |
c581d8b0 | 4352 | { |
5ba238b7 MK |
4353 | /* uninstall routes from vrf */ |
4354 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4355 | |
4356 | /* Cleanup the RT to VRF mapping */ | |
4357 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4358 | ||
c581d8b0 MK |
4359 | /* Remove auto generated RT */ |
4360 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4361 | ||
4362 | /* Add the newly configured RT to RT list */ | |
4363 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4364 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4365 | ||
10ebe1ab MK |
4366 | /* map VRF to its RTs */ |
4367 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4368 | ||
5ba238b7 MK |
4369 | /* install routes matching the new VRF */ |
4370 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4371 | } |
4372 | ||
4373 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4374 | struct ecommunity *ecomdel) | |
4375 | { | |
4376 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4377 | struct ecommunity *ecom = NULL; | |
4378 | ||
5ba238b7 MK |
4379 | /* uninstall routes from vrf */ |
4380 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4381 | |
4382 | /* Cleanup the RT to VRF mapping */ | |
4383 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4384 | ||
c581d8b0 MK |
4385 | /* remove the RT from the RT list */ |
4386 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4387 | if (ecommunity_match(ecom, ecomdel)) { | |
4388 | ecommunity_free(&ecom); | |
4389 | node_to_del = node; | |
4390 | break; | |
4391 | } | |
4392 | } | |
4393 | ||
4394 | if (node_to_del) | |
4395 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4396 | ||
b3a4db3d | 4397 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4398 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4399 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4400 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4401 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4402 | } | |
4403 | ||
10ebe1ab MK |
4404 | /* map VRFs to its RTs */ |
4405 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4406 | ||
5ba238b7 MK |
4407 | /* install routes matching this new RT */ |
4408 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4409 | } |
4410 | ||
4411 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4412 | struct ecommunity *ecomadd) | |
4413 | { | |
4414 | /* remove auto-generated RT */ | |
4415 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4416 | ||
4417 | /* Add the new RT to the RT list */ | |
4418 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4419 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4420 | ||
f1f8b53c | 4421 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4422 | } |
4423 | ||
4424 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4425 | struct ecommunity *ecomdel) | |
4426 | { | |
4427 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4428 | struct ecommunity *ecom = NULL; | |
4429 | ||
4430 | /* Remove the RT from the RT list */ | |
4431 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4432 | if (ecommunity_match(ecom, ecomdel)) { | |
4433 | ecommunity_free(&ecom); | |
4434 | node_to_del = node; | |
4435 | break; | |
4436 | } | |
4437 | } | |
4438 | ||
4439 | if (node_to_del) | |
4440 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4441 | ||
1525e99f DS |
4442 | /* |
4443 | * Temporary assert to make SA happy. | |
4444 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4445 | * which means that SA is going to complain about | |
4446 | * the list_isempty call, which doesn't NULL check. | |
4447 | * So until we get this situation cleaned up, here | |
4448 | * we are. | |
4449 | */ | |
4450 | assert(bgp_vrf->vrf_export_rtl); | |
4451 | ||
c581d8b0 | 4452 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4453 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4454 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4455 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4456 | } | |
4457 | ||
f1f8b53c | 4458 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4459 | } |
4460 | ||
2d48ee25 | 4461 | /* |
4462 | * Handle change to BGP router id. This is invoked twice by the change | |
4463 | * handler, first before the router id has been changed and then after | |
4464 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4465 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4466 | * will result in the routes being re-advertised. |
4467 | */ | |
d62a17ae | 4468 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4469 | { |
676f83b9 | 4470 | if (withdraw) { |
4471 | ||
4472 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4473 | stored in the global table for this vrf |
4474 | */ | |
80b140af | 4475 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4476 | |
4477 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4478 | * L2-VNIs |
4479 | */ | |
d62a17ae | 4480 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4481 | (void (*)(struct hash_bucket *, |
d62a17ae | 4482 | void *))withdraw_router_id_vni, |
4483 | bgp); | |
676f83b9 | 4484 | } else { |
4485 | ||
4486 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4487 | * RD |
4488 | */ | |
80b140af | 4489 | update_router_id_vrf(bgp); |
676f83b9 | 4490 | |
4491 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4492 | * new RD |
4493 | */ | |
d62a17ae | 4494 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4495 | (void (*)(struct hash_bucket *, |
d62a17ae | 4496 | void *))update_router_id_vni, |
4497 | bgp); | |
676f83b9 | 4498 | } |
2d48ee25 | 4499 | } |
4500 | ||
bf1061d8 VB |
4501 | /* |
4502 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4503 | */ | |
4504 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4505 | { | |
4506 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4507 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4508 | void*))update_autort_vni, |
4509 | bgp); | |
4510 | } | |
4511 | ||
90e60aa7 | 4512 | /* |
4513 | * Handle change to export RT - update and advertise local routes. | |
4514 | */ | |
d62a17ae | 4515 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4516 | { |
d62a17ae | 4517 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4518 | } |
4519 | ||
996c9314 | 4520 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4521 | { |
4522 | if (withdraw) | |
4523 | delete_withdraw_vrf_routes(bgp_vrf); | |
4524 | else | |
4525 | update_advertise_vrf_routes(bgp_vrf); | |
4526 | } | |
4527 | ||
90e60aa7 | 4528 | /* |
4529 | * Handle change to RD. This is invoked twice by the change handler, | |
4530 | * first before the RD has been changed and then after the RD has | |
4531 | * been changed. The first invocation will result in local routes | |
4532 | * of this VNI being deleted and withdrawn and the next will result | |
4533 | * in the routes being re-advertised. | |
4534 | */ | |
d62a17ae | 4535 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4536 | int withdraw) | |
90e60aa7 | 4537 | { |
d62a17ae | 4538 | if (withdraw) |
4539 | delete_withdraw_vni_routes(bgp, vpn); | |
4540 | else | |
4541 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4542 | } |
4543 | ||
4544 | /* | |
4545 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4546 | */ | |
d62a17ae | 4547 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4548 | { |
d62a17ae | 4549 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4550 | } |
4551 | ||
4552 | /* | |
4553 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4554 | * to Import RT. | |
4555 | */ | |
d62a17ae | 4556 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4557 | { |
d62a17ae | 4558 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4559 | } |
4560 | ||
b16031a2 | 4561 | /* |
b57ba6d2 | 4562 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4563 | */ |
d7c0a89a | 4564 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4565 | int len) |
b16031a2 | 4566 | { |
b57ba6d2 | 4567 | vni_t vni1, vni2; |
b16031a2 | 4568 | |
b57ba6d2 MK |
4569 | vni1 = label2vni(label); |
4570 | if (num_labels == 2) { | |
996c9314 | 4571 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4572 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4573 | } else | |
4574 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4575 | return buf; |
b16031a2 | 4576 | } |
4577 | ||
9c92b5f7 MK |
4578 | /* |
4579 | * Function to convert evpn route to json format. | |
4580 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4581 | */ | |
57f7feb6 | 4582 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4583 | { |
b682f6de | 4584 | char buf1[ETHER_ADDR_STRLEN]; |
4585 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4586 | |
b682f6de | 4587 | if (!json) |
4588 | return; | |
9c92b5f7 | 4589 | |
dff8f48d | 4590 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4591 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4592 | json_object_int_add(json, "ethTag", |
4593 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4594 | json_object_int_add(json, "ipLen", |
3714a385 | 4595 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4596 | ? IPV4_MAX_BITLEN |
4597 | : IPV6_MAX_BITLEN); | |
b682f6de | 4598 | json_object_string_add(json, "ip", |
3714a385 | 4599 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4600 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4601 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4602 | json_object_int_add(json, "routeType", |
4603 | p->prefix.route_type); | |
3714a385 | 4604 | json_object_int_add(json, "ethTag", |
4605 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4606 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4607 | json_object_string_add(json, "mac", | |
3714a385 | 4608 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4609 | buf1, |
4610 | sizeof(buf1))); | |
dff8f48d | 4611 | } else { |
d7c0a89a | 4612 | uint8_t family; |
dff8f48d | 4613 | |
3714a385 | 4614 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4615 | : AF_INET6; |
dff8f48d | 4616 | |
b682f6de | 4617 | json_object_int_add(json, "routeType", |
57f7feb6 | 4618 | p->prefix.route_type); |
3714a385 | 4619 | json_object_int_add(json, "ethTag", |
4620 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4621 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4622 | json_object_string_add(json, "mac", |
3714a385 | 4623 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4624 | buf1, |
4625 | sizeof(buf1))); | |
b682f6de | 4626 | json_object_int_add(json, "ipLen", |
3714a385 | 4627 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4628 | ? IPV4_MAX_BITLEN |
4629 | : IPV6_MAX_BITLEN); | |
4630 | json_object_string_add( | |
4631 | json, "ip", | |
3714a385 | 4632 | inet_ntop(family, |
4633 | &p->prefix.macip_addr.ip.ip.addr, | |
4634 | buf2, | |
57f7feb6 | 4635 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4636 | } |
4637 | } else { | |
4638 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4639 | } | |
9c92b5f7 MK |
4640 | } |
4641 | ||
520d5d76 | 4642 | /* |
4643 | * Function to convert evpn route to string. | |
4644 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4645 | */ | |
d62a17ae | 4646 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4647 | { | |
4648 | char buf1[ETHER_ADDR_STRLEN]; | |
4649 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4650 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4651 | |
4652 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4653 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4654 | p->prefix.imet_addr.eth_tag, |
4655 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4656 | : IPV6_MAX_BITLEN, |
3714a385 | 4657 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4658 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4659 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4660 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4661 | p->prefix.route_type, | |
3714a385 | 4662 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4663 | 8 * ETH_ALEN, |
3714a385 | 4664 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4665 | sizeof(buf1))); |
4666 | else { | |
d7c0a89a | 4667 | uint8_t family; |
d62a17ae | 4668 | |
3714a385 | 4669 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4670 | : AF_INET6; |
554cd77a VB |
4671 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4672 | p->prefix.route_type, | |
3714a385 | 4673 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4674 | 8 * ETH_ALEN, |
3714a385 | 4675 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4676 | sizeof(buf1)), |
4677 | family == AF_INET ? IPV4_MAX_BITLEN | |
4678 | : IPV6_MAX_BITLEN, | |
3714a385 | 4679 | inet_ntop(family, |
4680 | &p->prefix.macip_addr.ip.ip.addr, | |
4681 | buf2, | |
d62a17ae | 4682 | PREFIX2STR_BUFFER)); |
4683 | } | |
342dd0c6 | 4684 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4685 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4686 | p->prefix.route_type, | |
3714a385 | 4687 | p->prefix.prefix_addr.eth_tag, |
4688 | p->prefix.prefix_addr.ip_prefix_length, | |
4689 | is_evpn_prefix_ipaddr_v4(p) | |
4690 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4691 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4692 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4693 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4694 | p->prefix.route_type, | |
4695 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4696 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4697 | : IPV6_MAX_BITLEN, | |
4698 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4699 | } else { |
b03b8898 | 4700 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4701 | snprintf(buf, len, "(unsupported route type %d)", |
4702 | p->prefix.route_type); | |
d62a17ae | 4703 | } |
4704 | ||
4705 | return (buf); | |
520d5d76 | 4706 | } |
4707 | ||
128ea8ab | 4708 | /* |
4709 | * Encode EVPN prefix in Update (MP_REACH) | |
4710 | */ | |
d62a17ae | 4711 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4712 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4713 | uint32_t num_labels, struct attr *attr, |
4714 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4715 | { |
4716 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4717 | int len, ipa_len = 0; |
d62a17ae | 4718 | |
4719 | if (addpath_encode) | |
4720 | stream_putl(s, addpath_tx_id); | |
4721 | ||
4722 | /* Route type */ | |
4723 | stream_putc(s, evp->prefix.route_type); | |
4724 | ||
4725 | switch (evp->prefix.route_type) { | |
4726 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4727 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4728 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4729 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4730 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4731 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4732 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4733 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4734 | len += 3; | |
4735 | stream_putc(s, len); | |
996c9314 | 4736 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4737 | if (attr) |
4738 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4739 | else | |
4740 | stream_put(s, 0, 10); | |
3714a385 | 4741 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4742 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4743 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4744 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4745 | if (ipa_len) /* IP */ | |
4746 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4747 | ipa_len); | |
b57ba6d2 MK |
4748 | /* 1st label is the L2 VNI */ |
4749 | stream_put(s, label, BGP_LABEL_BYTES); | |
4750 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4751 | if (ipa_len && num_labels > 1) | |
996c9314 | 4752 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4753 | break; |
4754 | ||
4755 | case BGP_EVPN_IMET_ROUTE: | |
4756 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4757 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4758 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4759 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4760 | /* Originating Router's IP Addr */ | |
3714a385 | 4761 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4762 | break; |
4763 | ||
50f74cf1 | 4764 | case BGP_EVPN_ES_ROUTE: |
4765 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4766 | stream_put(s, prd->val, 8); /* RD */ | |
4767 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4768 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4769 | /* VTEP IP */ |
4770 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4771 | break; |
4772 | ||
d62a17ae | 4773 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4774 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4775 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4776 | break; |
4777 | ||
4778 | default: | |
4779 | break; | |
4780 | } | |
4781 | } | |
4782 | ||
4783 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4784 | struct bgp_nlri *packet, int withdraw) | |
4785 | { | |
d7c0a89a QY |
4786 | uint8_t *pnt; |
4787 | uint8_t *lim; | |
d62a17ae | 4788 | afi_t afi; |
4789 | safi_t safi; | |
d7c0a89a | 4790 | uint32_t addpath_id; |
d62a17ae | 4791 | int addpath_encoded; |
4792 | int psize = 0; | |
d7c0a89a | 4793 | uint8_t rtype; |
d62a17ae | 4794 | struct prefix p; |
4795 | ||
d62a17ae | 4796 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4797 | pnt = packet->nlri; | |
4798 | lim = pnt + packet->length; | |
4799 | afi = packet->afi; | |
4800 | safi = packet->safi; | |
4801 | addpath_id = 0; | |
4802 | ||
4803 | addpath_encoded = | |
4804 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4805 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4806 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4807 | ||
4808 | for (; pnt < lim; pnt += psize) { | |
4809 | /* Clear prefix structure. */ | |
4810 | memset(&p, 0, sizeof(struct prefix)); | |
4811 | ||
4812 | /* Deal with path-id if AddPath is supported. */ | |
4813 | if (addpath_encoded) { | |
4814 | /* When packet overflow occurs return immediately. */ | |
4815 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4816 | return -1; | |
4817 | ||
4818 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4819 | pnt += BGP_ADDPATH_ID_LEN; | |
4820 | } | |
4821 | ||
4822 | /* All EVPN NLRI types start with type and length. */ | |
4823 | if (pnt + 2 > lim) | |
4824 | return -1; | |
4825 | ||
4826 | rtype = *pnt++; | |
3f54c705 | 4827 | psize = *pnt++; |
d62a17ae | 4828 | |
4829 | /* When packet overflow occur return immediately. */ | |
4830 | if (pnt + psize > lim) | |
4831 | return -1; | |
4832 | ||
4833 | switch (rtype) { | |
4834 | case BGP_EVPN_MAC_IP_ROUTE: | |
4835 | if (process_type2_route(peer, afi, safi, | |
4836 | withdraw ? NULL : attr, pnt, | |
4837 | psize, addpath_id)) { | |
af4c2728 | 4838 | flog_err( |
e50f7cfd | 4839 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4840 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4841 | peer->bgp->vrf_id, peer->host, psize); | |
4842 | return -1; | |
4843 | } | |
4844 | break; | |
4845 | ||
4846 | case BGP_EVPN_IMET_ROUTE: | |
4847 | if (process_type3_route(peer, afi, safi, | |
4848 | withdraw ? NULL : attr, pnt, | |
4849 | psize, addpath_id)) { | |
af4c2728 | 4850 | flog_err( |
e50f7cfd | 4851 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4852 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4853 | peer->bgp->vrf_id, peer->host, psize); | |
4854 | return -1; | |
4855 | } | |
4856 | break; | |
4857 | ||
50f74cf1 | 4858 | case BGP_EVPN_ES_ROUTE: |
4859 | if (process_type4_route(peer, afi, safi, | |
4860 | withdraw ? NULL : attr, pnt, | |
4861 | psize, addpath_id)) { | |
af4c2728 | 4862 | flog_err( |
e50f7cfd | 4863 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4864 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4865 | peer->bgp->vrf_id, peer->host, psize); | |
4866 | return -1; | |
4867 | } | |
4868 | break; | |
4869 | ||
d62a17ae | 4870 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4871 | if (process_type5_route(peer, afi, safi, |
4872 | withdraw ? NULL : attr, pnt, | |
4873 | psize, addpath_id)) { | |
af4c2728 | 4874 | flog_err( |
e50f7cfd | 4875 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4876 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4877 | peer->bgp->vrf_id, peer->host, psize); | |
4878 | return -1; | |
4879 | } | |
4880 | break; | |
4881 | ||
4882 | default: | |
4883 | break; | |
4884 | } | |
4885 | } | |
4886 | ||
4887 | /* Packet length consistency check. */ | |
4888 | if (pnt != lim) | |
4889 | return -1; | |
4890 | ||
4891 | return 0; | |
128ea8ab | 4892 | } |
4893 | ||
10ebe1ab MK |
4894 | /* |
4895 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4896 | * The mapping will be used during route processing. | |
4897 | * bgp_def: default bgp instance | |
4898 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4899 | */ | |
4900 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4901 | { | |
4902 | int i = 0; | |
4903 | struct ecommunity_val *eval = NULL; | |
4904 | struct listnode *node = NULL, *nnode = NULL; | |
4905 | struct ecommunity *ecom = NULL; | |
4906 | ||
4907 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4908 | for (i = 0; i < ecom->size; i++) { | |
4909 | eval = (struct ecommunity_val *)(ecom->val | |
4910 | + (i | |
4911 | * ECOMMUNITY_SIZE)); | |
4912 | map_vrf_to_rt(bgp_vrf, eval); | |
4913 | } | |
4914 | } | |
4915 | } | |
4916 | ||
4917 | /* | |
4918 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4919 | */ | |
4920 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4921 | { | |
4922 | int i; | |
4923 | struct ecommunity_val *eval; | |
4924 | struct listnode *node, *nnode; | |
4925 | struct ecommunity *ecom; | |
4926 | ||
4927 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4928 | for (i = 0; i < ecom->size; i++) { | |
4929 | struct vrf_irt_node *irt; | |
4930 | struct ecommunity_val eval_tmp; | |
4931 | ||
4932 | eval = (struct ecommunity_val *)(ecom->val | |
4933 | + (i | |
4934 | * ECOMMUNITY_SIZE)); | |
4935 | /* If using "automatic" RT, we only care about the | |
4936 | * local-admin sub-field. | |
4937 | * This is to facilitate using VNI as the RT for EBGP | |
4938 | * peering too. | |
4939 | */ | |
4940 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4941 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4942 | BGP_VRF_IMPORT_RT_CFGD)) | |
4943 | mask_ecom_global_admin(&eval_tmp, eval); | |
4944 | ||
4945 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4946 | if (irt) | |
4947 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4948 | } | |
4949 | } | |
4950 | } | |
4951 | ||
4952 | ||
128ea8ab | 4953 | /* |
4954 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4955 | * The mapping will be used during route processing. | |
4956 | */ | |
d62a17ae | 4957 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4958 | { |
d62a17ae | 4959 | int i; |
4960 | struct ecommunity_val *eval; | |
4961 | struct listnode *node, *nnode; | |
4962 | struct ecommunity *ecom; | |
128ea8ab | 4963 | |
d62a17ae | 4964 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4965 | for (i = 0; i < ecom->size; i++) { | |
4966 | eval = (struct ecommunity_val *)(ecom->val | |
4967 | + (i | |
4968 | * ECOMMUNITY_SIZE)); | |
4969 | map_vni_to_rt(bgp, vpn, eval); | |
4970 | } | |
4971 | } | |
128ea8ab | 4972 | } |
4973 | ||
4974 | /* | |
4975 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4976 | */ | |
d62a17ae | 4977 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4978 | { |
d62a17ae | 4979 | int i; |
4980 | struct ecommunity_val *eval; | |
4981 | struct listnode *node, *nnode; | |
4982 | struct ecommunity *ecom; | |
128ea8ab | 4983 | |
d62a17ae | 4984 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4985 | for (i = 0; i < ecom->size; i++) { | |
4986 | struct irt_node *irt; | |
4987 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4988 | |
d62a17ae | 4989 | eval = (struct ecommunity_val *)(ecom->val |
4990 | + (i | |
4991 | * ECOMMUNITY_SIZE)); | |
4992 | /* If using "automatic" RT, we only care about the | |
4993 | * local-admin sub-field. | |
4994 | * This is to facilitate using VNI as the RT for EBGP | |
4995 | * peering too. | |
4996 | */ | |
4997 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4998 | if (!is_import_rt_configured(vpn)) | |
4999 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5000 | |
d62a17ae | 5001 | irt = lookup_import_rt(bgp, &eval_tmp); |
5002 | if (irt) | |
5003 | unmap_vni_from_rt(bgp, vpn, irt); | |
5004 | } | |
5005 | } | |
128ea8ab | 5006 | } |
5007 | ||
5008 | /* | |
5009 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5010 | * The mapping will be used during route processing. | |
5011 | */ | |
d62a17ae | 5012 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5013 | { |
c581d8b0 | 5014 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5015 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5016 | |
d62a17ae | 5017 | /* Map RT to VNI */ |
5018 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5019 | } |
5020 | ||
5021 | /* | |
5022 | * Derive Export RT automatically for VNI. | |
5023 | */ | |
d62a17ae | 5024 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5025 | { |
c581d8b0 | 5026 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5027 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5028 | } |
5029 | ||
676f83b9 | 5030 | /* |
5031 | * Derive RD automatically for VNI using passed information - it | |
5032 | * is of the form RouterId:unique-id-for-vni. | |
5033 | */ | |
5034 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5035 | { | |
92708db6 | 5036 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5037 | } |
5038 | ||
128ea8ab | 5039 | /* |
5040 | * Derive RD automatically for VNI using passed information - it | |
5041 | * is of the form RouterId:unique-id-for-vni. | |
5042 | */ | |
d62a17ae | 5043 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5044 | { |
d62a17ae | 5045 | char buf[100]; |
128ea8ab | 5046 | |
d62a17ae | 5047 | vpn->prd.family = AF_UNSPEC; |
5048 | vpn->prd.prefixlen = 64; | |
5049 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5050 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5051 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5052 | } |
5053 | ||
7df407ed CS |
5054 | /* |
5055 | * Lookup L3-VNI | |
5056 | */ | |
5057 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5058 | { | |
5059 | struct list *inst = bm->bgp; | |
5060 | struct listnode *node; | |
5061 | struct bgp *bgp_vrf; | |
5062 | ||
5063 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5064 | if (bgp_vrf->l3vni == vni) | |
5065 | return true; | |
5066 | } | |
5067 | ||
5068 | return false; | |
5069 | } | |
5070 | ||
128ea8ab | 5071 | /* |
5072 | * Lookup VNI. | |
5073 | */ | |
d62a17ae | 5074 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5075 | { |
d62a17ae | 5076 | struct bgpevpn *vpn; |
5077 | struct bgpevpn tmp; | |
128ea8ab | 5078 | |
d62a17ae | 5079 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5080 | tmp.vni = vni; | |
5081 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5082 | return vpn; | |
128ea8ab | 5083 | } |
5084 | ||
5085 | /* | |
5086 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5087 | */ | |
d62a17ae | 5088 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
5089 | struct in_addr originator_ip, |
5090 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 5091 | { |
d62a17ae | 5092 | struct bgpevpn *vpn; |
128ea8ab | 5093 | |
d62a17ae | 5094 | if (!bgp) |
5095 | return NULL; | |
128ea8ab | 5096 | |
d62a17ae | 5097 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5098 | |
d62a17ae | 5099 | /* Set values - RD and RT set to defaults. */ |
5100 | vpn->vni = vni; | |
5101 | vpn->originator_ip = originator_ip; | |
29c53922 | 5102 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 5103 | |
d62a17ae | 5104 | /* Initialize route-target import and export lists */ |
5105 | vpn->import_rtl = list_new(); | |
5106 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5107 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5108 | vpn->export_rtl = list_new(); |
5109 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5110 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5111 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5112 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5113 | |
d62a17ae | 5114 | /* Initialize EVPN route table. */ |
960035b2 | 5115 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5116 | |
d62a17ae | 5117 | /* Add to hash */ |
5118 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5119 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5120 | return NULL; | |
5121 | } | |
6a8657d0 MK |
5122 | |
5123 | /* add to l2vni list on corresponding vrf */ | |
5124 | bgpevpn_link_to_l3vni(vpn); | |
5125 | ||
d62a17ae | 5126 | QOBJ_REG(vpn, bgpevpn); |
5127 | return vpn; | |
128ea8ab | 5128 | } |
5129 | ||
5130 | /* | |
5131 | * Free a given VPN - called in multiple scenarios such as zebra | |
5132 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5133 | * This just frees appropriate memory, caller should have taken other | |
5134 | * needed actions. | |
5135 | */ | |
d62a17ae | 5136 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5137 | { |
6a8657d0 | 5138 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5139 | bgp_table_unlock(vpn->route_table); |
5140 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5141 | list_delete(&vpn->import_rtl); |
5142 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5143 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5144 | hash_release(bgp->vnihash, vpn); |
5145 | QOBJ_UNREG(vpn); | |
5146 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5147 | } |
5148 | ||
5149 | /* | |
50f74cf1 | 5150 | * Lookup local ES. |
5151 | */ | |
5152 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5153 | { | |
5154 | struct evpnes *es; | |
5155 | struct evpnes tmp; | |
5156 | ||
5157 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5158 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5159 | es = hash_lookup(bgp->esihash, &tmp); | |
5160 | return es; | |
5161 | } | |
5162 | ||
5163 | /* | |
5164 | * Create a new local es - invoked upon zebra notification. | |
5165 | */ | |
5166 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5167 | esi_t *esi, | |
5168 | struct ipaddr *originator_ip) | |
5169 | { | |
5170 | char buf[100]; | |
5171 | struct evpnes *es; | |
5172 | ||
5173 | if (!bgp) | |
5174 | return NULL; | |
5175 | ||
5176 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5177 | |
5178 | /* set the ESI and originator_ip */ | |
5179 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5180 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5181 | ||
5182 | /* Initialise the VTEP list */ | |
5183 | es->vtep_list = list_new(); | |
ce167790 | 5184 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5185 | |
5186 | /* auto derive RD for this es */ | |
5187 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5188 | es->prd.family = AF_UNSPEC; | |
5189 | es->prd.prefixlen = 64; | |
5190 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5191 | (void)str2prefix_rd(buf, &es->prd); | |
5192 | ||
5193 | /* Initialize the ES route table */ | |
5194 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5195 | ||
5196 | /* Add to hash */ | |
5197 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5198 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5199 | return NULL; | |
5200 | } | |
5201 | ||
5202 | QOBJ_REG(es, evpnes); | |
5203 | return es; | |
5204 | } | |
5205 | ||
5206 | /* | |
5207 | * Free a given ES - | |
5208 | * This just frees appropriate memory, caller should have taken other | |
5209 | * needed actions. | |
5210 | */ | |
5211 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5212 | { | |
6a154c88 | 5213 | list_delete(&es->vtep_list); |
50f74cf1 | 5214 | bgp_table_unlock(es->route_table); |
5215 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5216 | hash_release(bgp->esihash, es); | |
5217 | QOBJ_UNREG(es); | |
5218 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5219 | } | |
5220 | ||
5221 | /* | |
5222 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5223 | */ |
d62a17ae | 5224 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5225 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5226 | { |
40381db7 | 5227 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5228 | } |
5229 | ||
5230 | /* | |
50f74cf1 | 5231 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5232 | */ |
d62a17ae | 5233 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5234 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5235 | { |
40381db7 | 5236 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5237 | } |
5238 | ||
db0e1937 MK |
5239 | /* filter routes which have martian next hops */ |
5240 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5241 | { | |
0291c246 MK |
5242 | afi_t afi; |
5243 | safi_t safi; | |
5244 | struct bgp_node *rd_rn, *rn; | |
5245 | struct bgp_table *table; | |
40381db7 | 5246 | struct bgp_path_info *pi; |
db0e1937 MK |
5247 | |
5248 | afi = AFI_L2VPN; | |
5249 | safi = SAFI_EVPN; | |
5250 | ||
5251 | /* Walk entire global routing table and evaluate routes which could be | |
5252 | * imported into this VPN. Note that we cannot just look at the routes | |
5253 | * for the VNI's RD - | |
5254 | * remote routes applicable for this VNI could have any RD. | |
5255 | */ | |
5256 | /* EVPN routes are a 2-level table. */ | |
5257 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5258 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5259 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5260 | if (!table) |
5261 | continue; | |
5262 | ||
5263 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5264 | ||
6f94b685 DS |
5265 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5266 | pi = pi->next) { | |
db0e1937 MK |
5267 | |
5268 | /* Consider "valid" remote routes applicable for | |
5269 | * this VNI. */ | |
40381db7 DS |
5270 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5271 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 MK |
5272 | continue; |
5273 | ||
40381db7 | 5274 | if (bgp_nexthop_self(bgp, pi->attr->nexthop)) { |
db0e1937 | 5275 | |
8ba71050 | 5276 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5277 | char pbuf[PREFIX_STRLEN]; |
5278 | ||
40381db7 | 5279 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5280 | BUFSIZ); |
5281 | ||
40381db7 | 5282 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5283 | NULL, 1)) |
5284 | zlog_debug( | |
b682f6de | 5285 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5286 | bgp->vrf_id, |
5287 | prefix2str( | |
60466a63 | 5288 | &rn->p, pbuf, |
db0e1937 MK |
5289 | sizeof(pbuf)), |
5290 | attr_str); | |
5291 | ||
5292 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5293 | &rn->p, pi); |
db0e1937 | 5294 | |
40381db7 | 5295 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5296 | safi); |
db0e1937 | 5297 | } |
db0e1937 MK |
5298 | } |
5299 | } | |
5300 | } | |
5301 | ||
5302 | return 0; | |
5303 | } | |
5304 | ||
128ea8ab | 5305 | /* |
5306 | * Handle del of a local MACIP. | |
5307 | */ | |
d62a17ae | 5308 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5309 | struct ipaddr *ip, int state) |
128ea8ab | 5310 | { |
d62a17ae | 5311 | struct bgpevpn *vpn; |
5312 | struct prefix_evpn p; | |
ec0ab544 | 5313 | struct bgp_node *rn; |
128ea8ab | 5314 | |
d62a17ae | 5315 | /* Lookup VNI hash - should exist. */ |
5316 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5317 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5318 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5319 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5320 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5321 | return -1; | |
5322 | } | |
128ea8ab | 5323 | |
d62a17ae | 5324 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5325 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5326 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5327 | delete_evpn_route(bgp, vpn, &p); | |
5328 | } else { | |
5329 | /* Re-instate the current remote best path if any */ | |
5330 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5331 | if (rn) | |
5332 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5333 | } | |
128ea8ab | 5334 | |
d62a17ae | 5335 | return 0; |
128ea8ab | 5336 | } |
5337 | ||
5338 | /* | |
5339 | * Handle add of a local MACIP. | |
5340 | */ | |
d62a17ae | 5341 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5342 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5343 | { |
d62a17ae | 5344 | struct bgpevpn *vpn; |
5345 | struct prefix_evpn p; | |
128ea8ab | 5346 | |
d62a17ae | 5347 | /* Lookup VNI hash - should exist. */ |
5348 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5349 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5350 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5351 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5352 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5353 | return -1; | |
5354 | } | |
128ea8ab | 5355 | |
d62a17ae | 5356 | /* Create EVPN type-2 route and schedule for processing. */ |
5357 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5358 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5359 | char buf[ETHER_ADDR_STRLEN]; |
5360 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5361 | |
af4c2728 | 5362 | flog_err( |
e50f7cfd | 5363 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5364 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5365 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5366 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5367 | ? "sticky gateway" | |
5368 | : "", | |
d62a17ae | 5369 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5370 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5371 | return -1; |
5372 | } | |
128ea8ab | 5373 | |
d62a17ae | 5374 | return 0; |
128ea8ab | 5375 | } |
5376 | ||
e3b78da8 | 5377 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5378 | struct bgp *bgp_vrf) |
5379 | { | |
e3b78da8 | 5380 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5381 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5382 | |
5e53dce3 T |
5383 | bgp_evpn = bgp_get_evpn(); |
5384 | assert(bgp_evpn); | |
6a8657d0 | 5385 | |
6a8657d0 MK |
5386 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5387 | bgpevpn_link_to_l3vni(vpn); | |
5388 | } | |
5389 | ||
996c9314 | 5390 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
0483af6e | 5391 | struct in_addr originator_ip, int filter, |
5392 | ifindex_t svi_ifindex) | |
fe1dc5a3 MK |
5393 | { |
5394 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5395 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5396 | struct listnode *node = NULL; |
5397 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5398 | as_t as = 0; |
5399 | ||
3621ebc5 | 5400 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5401 | * auto-creatio |
5402 | */ | |
5e53dce3 T |
5403 | bgp_evpn = bgp_get_evpn(); |
5404 | if (!bgp_evpn) { | |
af4c2728 | 5405 | flog_err( |
e50f7cfd | 5406 | EC_BGP_NO_DFLT, |
3621ebc5 | 5407 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5408 | l3vni); |
fe1dc5a3 MK |
5409 | return -1; |
5410 | } | |
5e53dce3 | 5411 | as = bgp_evpn->as; |
fe1dc5a3 | 5412 | |
0437e105 | 5413 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5414 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5415 | if (!bgp_vrf) { |
5416 | ||
5417 | int ret = 0; | |
5418 | ||
5419 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
3621ebc5 T |
5420 | vrf_id == VRF_DEFAULT ? BGP_INSTANCE_TYPE_DEFAULT |
5421 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 MK |
5422 | switch (ret) { |
5423 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5424 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5425 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5426 | return -1; |
5427 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5428 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5429 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5430 | return -1; |
5431 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5432 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5433 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5434 | return -1; |
5435 | } | |
5436 | ||
5437 | /* mark as auto created */ | |
5438 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5439 | } | |
5440 | ||
0483af6e | 5441 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5442 | bgp_vrf->l3vni = l3vni; |
fe1dc5a3 | 5443 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); |
b67a60d2 | 5444 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5445 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
b67a60d2 | 5446 | |
c48d9f5f MK |
5447 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5448 | if (filter) | |
5449 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5450 | ||
530e8a6e | 5451 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5452 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5453 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5454 | else |
5455 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5456 | ||
c581d8b0 MK |
5457 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5458 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5459 | |
5460 | /* auto derive RD */ | |
676f83b9 | 5461 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5462 | |
6a8657d0 | 5463 | /* link all corresponding l2vnis */ |
5e53dce3 | 5464 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5465 | (void (*)(struct hash_bucket *, |
996c9314 | 5466 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5467 | bgp_vrf); |
5468 | ||
c48d9f5f MK |
5469 | /* Only update all corresponding type-2 routes if we are advertising two |
5470 | * labels along with type-2 routes | |
5471 | */ | |
5472 | if (!filter) | |
5473 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5474 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5475 | |
06d2e8f3 MK |
5476 | /* advertise type-5 routes if needed */ |
5477 | update_advertise_vrf_routes(bgp_vrf); | |
5478 | ||
5ba238b7 MK |
5479 | /* install all remote routes belonging to this l3vni into correspondng |
5480 | * vrf */ | |
5481 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5482 | |
5483 | return 0; | |
5484 | } | |
5485 | ||
996c9314 | 5486 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5487 | { |
5488 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5489 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5490 | struct listnode *node = NULL; |
18abc1eb | 5491 | struct listnode *next = NULL; |
f1f8b53c | 5492 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5493 | |
5494 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5495 | if (!bgp_vrf) { | |
af4c2728 | 5496 | flog_err( |
e50f7cfd | 5497 | EC_BGP_NO_DFLT, |
996c9314 LB |
5498 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5499 | l3vni); | |
fe1dc5a3 MK |
5500 | return -1; |
5501 | } | |
5502 | ||
5e53dce3 T |
5503 | bgp_evpn = bgp_get_evpn(); |
5504 | if (!bgp_evpn) { | |
af4c2728 | 5505 | flog_err( |
e50f7cfd | 5506 | EC_BGP_NO_DFLT, |
3621ebc5 | 5507 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5508 | l3vni); |
f1f8b53c MK |
5509 | return -1; |
5510 | } | |
5511 | ||
d846168d | 5512 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5513 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5514 | * routes. This will uninstalling the routes from zebra and decremnt the |
5515 | * bgp info count. | |
523cafc4 | 5516 | */ |
d846168d | 5517 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5518 | |
06d2e8f3 MK |
5519 | /* delete/withdraw all type-5 routes */ |
5520 | delete_withdraw_vrf_routes(bgp_vrf); | |
5521 | ||
fe1dc5a3 MK |
5522 | /* remove the l3vni from vrf instance */ |
5523 | bgp_vrf->l3vni = 0; | |
5524 | ||
5525 | /* remove the Rmac from the BGP vrf */ | |
5526 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5527 | ||
530e8a6e | 5528 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5529 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5530 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5531 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5532 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5533 | } |
530e8a6e CS |
5534 | |
5535 | /* remove default export RT */ | |
5536 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5537 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5538 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5539 | } |
fe1dc5a3 | 5540 | |
f1f8b53c | 5541 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5542 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5543 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5544 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5545 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5546 | } |
5547 | } | |
fe1dc5a3 | 5548 | |
18abc1eb | 5549 | /* If any L2VNIs point to this instance, unlink them. */ |
5550 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5551 | bgpevpn_unlink_from_l3vni(vpn); | |
5552 | ||
fe1dc5a3 MK |
5553 | /* Delete the instance if it was autocreated */ |
5554 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5555 | bgp_delete(bgp_vrf); | |
5556 | ||
5557 | return 0; | |
5558 | } | |
5559 | ||
128ea8ab | 5560 | /* |
5561 | * Handle del of a local VNI. | |
5562 | */ | |
d62a17ae | 5563 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5564 | { |
d62a17ae | 5565 | struct bgpevpn *vpn; |
128ea8ab | 5566 | |
d62a17ae | 5567 | /* Locate VNI hash */ |
5568 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5569 | if (!vpn) { | |
1e00627b | 5570 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5571 | flog_warn( |
e50f7cfd | 5572 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5573 | "%u: VNI hash entry for VNI %u not found at DEL", |
5574 | bgp->vrf_id, vni); | |
d62a17ae | 5575 | return 0; |
5576 | } | |
128ea8ab | 5577 | |
d62a17ae | 5578 | /* Remove all local EVPN routes and schedule for processing (to |
5579 | * withdraw from peers). | |
5580 | */ | |
5581 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5582 | |
db0e1937 MK |
5583 | /* |
5584 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5585 | */ | |
5586 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5587 | ||
d62a17ae | 5588 | /* Clear "live" flag and see if hash needs to be freed. */ |
5589 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5590 | if (!is_vni_configured(vpn)) | |
5591 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5592 | |
d62a17ae | 5593 | return 0; |
128ea8ab | 5594 | } |
5595 | ||
5596 | /* | |
d1911c26 | 5597 | * Handle add (or update) of a local VNI. The VNI changes we care |
5598 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5599 | */ |
d62a17ae | 5600 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5601 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5602 | { |
5603 | struct bgpevpn *vpn; | |
5604 | struct prefix_evpn p; | |
5605 | ||
d62a17ae | 5606 | /* Lookup VNI. If present and no change, exit. */ |
5607 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5608 | if (vpn) { |
29c53922 | 5609 | |
d1911c26 | 5610 | if (is_vni_live(vpn) |
5611 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5612 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5613 | /* Probably some other param has changed that we don't | |
5614 | * care about. */ | |
5615 | return 0; | |
5616 | ||
5617 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5618 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5619 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5620 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5621 | bgpevpn_link_to_l3vni(vpn); |
5622 | } | |
29c53922 | 5623 | |
d1911c26 | 5624 | /* If tunnel endpoint IP has changed, update (and delete prior |
5625 | * type-3 route, if needed.) | |
5626 | */ | |
5627 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5628 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5629 | |
d1911c26 | 5630 | /* Update all routes with new endpoint IP and/or export RT |
5631 | * for VRFs | |
5632 | */ | |
5633 | if (is_vni_live(vpn)) | |
5634 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5635 | } |
5636 | ||
5637 | /* Create or update as appropriate. */ | |
5638 | if (!vpn) { | |
29c53922 | 5639 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5640 | if (!vpn) { |
af4c2728 | 5641 | flog_err( |
e50f7cfd | 5642 | EC_BGP_VNI, |
d62a17ae | 5643 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5644 | bgp->vrf_id, vni); | |
5645 | return -1; | |
5646 | } | |
5647 | } | |
5648 | ||
db0e1937 | 5649 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5650 | if (is_vni_live(vpn)) |
5651 | return 0; | |
5652 | ||
d62a17ae | 5653 | /* Mark as "live" */ |
5654 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5655 | ||
db0e1937 MK |
5656 | /* tunnel is now active, add tunnel-ip to db */ |
5657 | bgp_tip_add(bgp, &originator_ip); | |
5658 | ||
5659 | /* filter routes as nexthop database has changed */ | |
5660 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5661 | ||
fd069644 DS |
5662 | /* |
5663 | * Create EVPN type-3 route and schedule for processing. | |
5664 | * | |
5665 | * RT-3 only if doing head-end replication | |
5666 | */ | |
5667 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) { | |
5668 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5669 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5670 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5671 | "%u: Type3 route creation failure for VNI %u", | |
5672 | bgp->vrf_id, vni); | |
5673 | return -1; | |
5674 | } | |
d62a17ae | 5675 | } |
5676 | ||
5677 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5678 | * VNI, | |
5679 | * install them. | |
5680 | */ | |
5681 | install_routes_for_vni(bgp, vpn); | |
5682 | ||
d7d97010 MK |
5683 | /* If we are advertising gateway mac-ip |
5684 | It needs to be conveyed again to zebra */ | |
5685 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5686 | ||
d62a17ae | 5687 | return 0; |
b18825eb | 5688 | } |
14c1a7bf | 5689 | |
50f74cf1 | 5690 | /* |
5691 | * bgp_evpn_local_es_del | |
5692 | */ | |
5693 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5694 | esi_t *esi, | |
5695 | struct ipaddr *originator_ip) | |
5696 | { | |
5697 | char buf[ESI_STR_LEN]; | |
5698 | struct evpnes *es = NULL; | |
5699 | ||
5700 | if (!bgp->esihash) { | |
e50f7cfd | 5701 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5702 | bgp->vrf_id); |
50f74cf1 | 5703 | return -1; |
5704 | } | |
5705 | ||
5706 | /* Lookup ESI hash - should exist. */ | |
5707 | es = bgp_evpn_lookup_es(bgp, esi); | |
5708 | if (!es) { | |
e50f7cfd | 5709 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5710 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5711 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5712 | return -1; |
5713 | } | |
5714 | ||
5715 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5716 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5717 | */ |
5718 | delete_routes_for_es(bgp, es); | |
5719 | ||
5720 | /* free the hash entry */ | |
5721 | bgp_evpn_es_free(bgp, es); | |
5722 | ||
5723 | return 0; | |
5724 | } | |
5725 | ||
5726 | /* | |
5727 | * bgp_evpn_local_es_add | |
5728 | */ | |
5729 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5730 | esi_t *esi, | |
5731 | struct ipaddr *originator_ip) | |
5732 | { | |
5733 | char buf[ESI_STR_LEN]; | |
5734 | struct evpnes *es = NULL; | |
5735 | struct prefix_evpn p; | |
5736 | ||
5737 | if (!bgp->esihash) { | |
e50f7cfd | 5738 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5739 | bgp->vrf_id); |
50f74cf1 | 5740 | return -1; |
5741 | } | |
5742 | ||
5743 | /* create the new es */ | |
2bb9eff4 | 5744 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5745 | if (!es) { |
5746 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5747 | if (!es) { | |
af4c2728 | 5748 | flog_err( |
e50f7cfd | 5749 | EC_BGP_ES_CREATE, |
50f74cf1 | 5750 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5751 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5752 | return -1; | |
5753 | } | |
5754 | } | |
5755 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5756 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5757 | ||
5758 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5759 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5760 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5761 | "%u: Type4 route creation failure for ESI %s", |
5762 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5763 | return -1; |
5764 | } | |
5765 | ||
5766 | /* import all remote ES routes in th ES table */ | |
5767 | install_routes_for_es(bgp, es); | |
5768 | ||
5769 | return 0; | |
5770 | } | |
5771 | ||
fd069644 DS |
5772 | /* |
5773 | * Handle change in setting for BUM handling. The supported values | |
5774 | * are head-end replication and dropping all BUM packets. Any change | |
5775 | * should be registered with zebra. Also, if doing head-end replication, | |
5776 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5777 | * to be dropped, the RT-3s must be withdrawn. | |
5778 | */ | |
5779 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5780 | { | |
5781 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5782 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5783 | "Flooding" : "Flooding Disabled"); | |
5784 | ||
5785 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5786 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5787 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5788 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5789 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5790 | } | |
5791 | ||
7724c0a1 | 5792 | /* |
5793 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5794 | * EVPN routes from peers. | |
5795 | */ | |
d62a17ae | 5796 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5797 | { |
e3b78da8 | 5798 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5799 | void *))cleanup_vni_on_disable, |
5800 | bgp); | |
7724c0a1 | 5801 | } |
5802 | ||
14c1a7bf | 5803 | /* |
5804 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5805 | * BGP instance (default) is being freed. | |
5806 | */ | |
d62a17ae | 5807 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5808 | { |
1525e99f | 5809 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5810 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5811 | bgp); |
5812 | ||
5813 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5814 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5815 | |
5816 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5817 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5818 | |
5819 | hash_free(bgp->vnihash); | |
d62a17ae | 5820 | bgp->vnihash = NULL; |
50f74cf1 | 5821 | if (bgp->esihash) |
5822 | hash_free(bgp->esihash); | |
5823 | bgp->esihash = NULL; | |
1525e99f | 5824 | |
6a154c88 DL |
5825 | list_delete(&bgp->vrf_import_rtl); |
5826 | list_delete(&bgp->vrf_export_rtl); | |
5827 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5828 | } |
5829 | ||
5830 | /* | |
5831 | * Initialization for EVPN | |
5832 | * Create | |
5833 | * VNI hash table | |
5834 | * hash for RT to VNI | |
14c1a7bf | 5835 | */ |
d62a17ae | 5836 | void bgp_evpn_init(struct bgp *bgp) |
5837 | { | |
5838 | bgp->vnihash = | |
5839 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5840 | bgp->esihash = |
5841 | hash_create(esi_hash_keymake, esi_cmp, | |
5842 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5843 | bgp->import_rt_hash = |
5844 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5845 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5846 | bgp->vrf_import_rt_hash = |
5847 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5848 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5849 | bgp->vrf_import_rtl = list_new(); |
5850 | bgp->vrf_import_rtl->cmp = | |
5851 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5852 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5853 | bgp->vrf_export_rtl = list_new(); |
5854 | bgp->vrf_export_rtl->cmp = | |
5855 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5856 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5857 | bgp->l2vnis = list_new(); |
64465785 | 5858 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5859 | /* By default Duplicate Address Dection is enabled. |
5860 | * Max-moves (N) 5, detection time (M) 180 | |
5861 | * default action is warning-only | |
5862 | * freeze action permanently freezes address, | |
5863 | * and freeze time (auto-recovery) is disabled. | |
5864 | */ | |
5865 | if (bgp->evpn_info) { | |
5866 | bgp->evpn_info->dup_addr_detect = true; | |
5867 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5868 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5869 | bgp->evpn_info->dad_freeze = false; | |
5870 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5871 | /* Initialize zebra vxlan */ |
5872 | bgp_zebra_dup_addr_detection(bgp); | |
85c8d83b | 5873 | } |
fd069644 DS |
5874 | |
5875 | /* Default BUM handling is to do head-end replication. */ | |
5876 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5877 | } |
10ebe1ab MK |
5878 | |
5879 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5880 | { | |
5881 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5882 | } |