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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 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
128ea8ab | 56 | |
57 | /* | |
58 | * Definitions and external declarations. | |
59 | */ | |
96244aca DL |
60 | DEFINE_QOBJ_TYPE(bgpevpn); |
61 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 62 | |
63 | ||
64 | /* | |
65 | * Static function declarations | |
66 | */ | |
d62a17ae | 67 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 | 68 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 69 | |
70 | /* | |
71 | * Private functions. | |
72 | */ | |
73 | ||
74 | /* | |
75 | * Make vni hash key. | |
76 | */ | |
d8b87afe | 77 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 78 | { |
d8b87afe | 79 | const struct bgpevpn *vpn = p; |
d62a17ae | 80 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 81 | } |
82 | ||
83 | /* | |
84 | * Comparison function for vni hash | |
85 | */ | |
74df8d6d | 86 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 87 | { |
d62a17ae | 88 | const struct bgpevpn *vpn1 = p1; |
89 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 90 | |
d62a17ae | 91 | if (!vpn1 && !vpn2) |
74df8d6d | 92 | return true; |
d62a17ae | 93 | if (!vpn1 || !vpn2) |
74df8d6d | 94 | return false; |
d62a17ae | 95 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 96 | } |
97 | ||
c44ab6f1 | 98 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
99 | { |
100 | const struct bgpevpn *vpn1 = p1; | |
101 | const struct bgpevpn *vpn2 = p2; | |
102 | ||
103 | return vpn1->vni - vpn2->vni; | |
104 | } | |
105 | ||
10ebe1ab MK |
106 | /* |
107 | * Make vrf import route target hash key. | |
108 | */ | |
d8b87afe | 109 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 110 | { |
d8b87afe QY |
111 | const struct vrf_irt_node *irt = p; |
112 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
113 | |
114 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
115 | } |
116 | ||
117 | /* | |
118 | * Comparison function for vrf import rt hash | |
119 | */ | |
74df8d6d | 120 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
121 | { |
122 | const struct vrf_irt_node *irt1 = p1; | |
123 | const struct vrf_irt_node *irt2 = p2; | |
124 | ||
125 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 126 | return true; |
10ebe1ab MK |
127 | |
128 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 129 | return false; |
10ebe1ab MK |
130 | |
131 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
132 | } | |
133 | ||
134 | /* | |
f9b8094e | 135 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
136 | */ |
137 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
138 | { | |
5e53dce3 | 139 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
140 | struct vrf_irt_node *irt; |
141 | ||
5e53dce3 T |
142 | bgp_evpn = bgp_get_evpn(); |
143 | if (!bgp_evpn) { | |
e50f7cfd | 144 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 145 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
146 | return NULL; |
147 | } | |
148 | ||
149 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
150 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
151 | |
152 | irt->rt = *rt; | |
153 | irt->vrfs = list_new(); | |
154 | ||
155 | /* Add to hash */ | |
5e53dce3 | 156 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
157 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
158 | return NULL; | |
159 | } | |
160 | ||
161 | return irt; | |
162 | } | |
163 | ||
164 | /* | |
165 | * Free the vrf import rt node | |
166 | */ | |
167 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
168 | { | |
5e53dce3 | 169 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 170 | |
5e53dce3 T |
171 | bgp_evpn = bgp_get_evpn(); |
172 | if (!bgp_evpn) { | |
e50f7cfd | 173 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 174 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
175 | return; |
176 | } | |
177 | ||
5e53dce3 | 178 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 179 | list_delete(&irt->vrfs); |
10ebe1ab MK |
180 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
181 | } | |
182 | ||
183 | /* | |
184 | * Function to lookup Import RT node - used to map a RT to set of | |
185 | * VNIs importing routes with that RT. | |
186 | */ | |
187 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
188 | { | |
5e53dce3 | 189 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
190 | struct vrf_irt_node *irt; |
191 | struct vrf_irt_node tmp; | |
192 | ||
5e53dce3 T |
193 | bgp_evpn = bgp_get_evpn(); |
194 | if (!bgp_evpn) { | |
f9b8094e T |
195 | flog_err( |
196 | EC_BGP_NO_DFLT, | |
197 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
198 | return NULL; |
199 | } | |
200 | ||
201 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
202 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 203 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
204 | return irt; |
205 | } | |
206 | ||
207 | /* | |
208 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
209 | */ | |
996c9314 | 210 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
211 | { |
212 | struct listnode *node = NULL, *nnode = NULL; | |
213 | struct bgp *tmp_bgp_vrf = NULL; | |
214 | ||
215 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
216 | if (tmp_bgp_vrf == bgp_vrf) | |
217 | return 1; | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
14c1a7bf | 222 | /* |
223 | * Make import route target hash key. | |
224 | */ | |
d8b87afe | 225 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 226 | { |
d8b87afe QY |
227 | const struct irt_node *irt = p; |
228 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
229 | |
230 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 231 | } |
232 | ||
233 | /* | |
234 | * Comparison function for import rt hash | |
235 | */ | |
74df8d6d | 236 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 237 | { |
d62a17ae | 238 | const struct irt_node *irt1 = p1; |
239 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 240 | |
d62a17ae | 241 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 242 | return true; |
14c1a7bf | 243 | |
d62a17ae | 244 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 245 | return false; |
14c1a7bf | 246 | |
d62a17ae | 247 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 248 | } |
249 | ||
7724c0a1 | 250 | /* |
128ea8ab | 251 | * Create a new import_rt |
252 | */ | |
d62a17ae | 253 | static struct irt_node *import_rt_new(struct bgp *bgp, |
254 | struct ecommunity_val *rt) | |
128ea8ab | 255 | { |
d62a17ae | 256 | struct irt_node *irt; |
128ea8ab | 257 | |
d62a17ae | 258 | if (!bgp) |
259 | return NULL; | |
128ea8ab | 260 | |
d62a17ae | 261 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 262 | |
d62a17ae | 263 | irt->rt = *rt; |
264 | irt->vnis = list_new(); | |
128ea8ab | 265 | |
d62a17ae | 266 | /* Add to hash */ |
267 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
268 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
269 | return NULL; | |
270 | } | |
128ea8ab | 271 | |
d62a17ae | 272 | return irt; |
128ea8ab | 273 | } |
274 | ||
275 | /* | |
276 | * Free the import rt node | |
7724c0a1 | 277 | */ |
d62a17ae | 278 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 279 | { |
d62a17ae | 280 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 281 | list_delete(&irt->vnis); |
d62a17ae | 282 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 283 | } |
284 | ||
14c1a7bf | 285 | /* |
128ea8ab | 286 | * Function to lookup Import RT node - used to map a RT to set of |
287 | * VNIs importing routes with that RT. | |
288 | */ | |
d62a17ae | 289 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
290 | struct ecommunity_val *rt) | |
128ea8ab | 291 | { |
d62a17ae | 292 | struct irt_node *irt; |
293 | struct irt_node tmp; | |
128ea8ab | 294 | |
d62a17ae | 295 | memset(&tmp, 0, sizeof(struct irt_node)); |
296 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
297 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
298 | return irt; | |
128ea8ab | 299 | } |
300 | ||
301 | /* | |
302 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
303 | */ | |
d62a17ae | 304 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 305 | { |
d62a17ae | 306 | struct listnode *node, *nnode; |
307 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 308 | |
d62a17ae | 309 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
310 | if (tmp_vpn == vpn) | |
311 | return 1; | |
312 | } | |
128ea8ab | 313 | |
d62a17ae | 314 | return 0; |
128ea8ab | 315 | } |
316 | ||
317 | /* | |
318 | * Compare Route Targets. | |
319 | */ | |
d62a17ae | 320 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
321 | struct ecommunity *ecom2) | |
128ea8ab | 322 | { |
d62a17ae | 323 | if (ecom1 && !ecom2) |
324 | return -1; | |
128ea8ab | 325 | |
d62a17ae | 326 | if (!ecom1 && ecom2) |
327 | return 1; | |
128ea8ab | 328 | |
d62a17ae | 329 | if (!ecom1 && !ecom2) |
330 | return 0; | |
128ea8ab | 331 | |
d62a17ae | 332 | if (ecom1->str && !ecom2->str) |
333 | return -1; | |
128ea8ab | 334 | |
d62a17ae | 335 | if (!ecom1->str && ecom2->str) |
336 | return 1; | |
128ea8ab | 337 | |
d62a17ae | 338 | if (!ecom1->str && !ecom2->str) |
339 | return 0; | |
128ea8ab | 340 | |
d62a17ae | 341 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 342 | } |
343 | ||
987d8198 DS |
344 | static void evpn_xxport_delete_ecomm(void *val) |
345 | { | |
346 | struct ecommunity *ecomm = val; | |
347 | ecommunity_free(&ecomm); | |
348 | } | |
349 | ||
128ea8ab | 350 | /* |
351 | * Mask off global-admin field of specified extended community (RT), | |
352 | * just retain the local-admin field. | |
353 | */ | |
d62a17ae | 354 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
355 | struct ecommunity_val *src) | |
128ea8ab | 356 | { |
d7c0a89a | 357 | uint8_t type; |
128ea8ab | 358 | |
d62a17ae | 359 | type = src->val[0]; |
360 | dst->val[0] = 0; | |
361 | if (type == ECOMMUNITY_ENCODE_AS) { | |
362 | dst->val[2] = dst->val[3] = 0; | |
363 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
364 | || type == ECOMMUNITY_ENCODE_IP) { | |
365 | dst->val[2] = dst->val[3] = 0; | |
366 | dst->val[4] = dst->val[5] = 0; | |
367 | } | |
128ea8ab | 368 | } |
369 | ||
10ebe1ab MK |
370 | /* |
371 | * Map one RT to specified VRF. | |
372 | * bgp_vrf = BGP vrf instance | |
373 | */ | |
996c9314 | 374 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
375 | { |
376 | struct vrf_irt_node *irt = NULL; | |
377 | struct ecommunity_val eval_tmp; | |
378 | ||
379 | /* If using "automatic" RT, | |
380 | * we only care about the local-admin sub-field. | |
381 | * This is to facilitate using L3VNI(VRF-VNI) | |
382 | * as the RT for EBGP peering too. | |
383 | */ | |
384 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 385 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
386 | mask_ecom_global_admin(&eval_tmp, eval); |
387 | ||
388 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
389 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
390 | /* Already mapped. */ | |
391 | return; | |
10ebe1ab | 392 | |
e066d6d0 | 393 | if (!irt) |
10ebe1ab | 394 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
395 | |
396 | /* Add VRF to the list for this RT. */ | |
397 | listnode_add(irt->vrfs, bgp_vrf); | |
398 | } | |
399 | ||
400 | /* | |
401 | * Unmap specified VRF from specified RT. If there are no other | |
402 | * VRFs for this RT, then the RT hash is deleted. | |
403 | * bgp_vrf: BGP VRF specific instance | |
404 | */ | |
996c9314 | 405 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
406 | { |
407 | /* Delete VRF from list for this RT. */ | |
408 | listnode_delete(irt->vrfs, bgp_vrf); | |
409 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
410 | vrf_import_rt_free(irt); |
411 | } | |
412 | } | |
413 | ||
128ea8ab | 414 | /* |
415 | * Map one RT to specified VNI. | |
14c1a7bf | 416 | */ |
d62a17ae | 417 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
418 | struct ecommunity_val *eval) | |
128ea8ab | 419 | { |
d62a17ae | 420 | struct irt_node *irt; |
421 | struct ecommunity_val eval_tmp; | |
128ea8ab | 422 | |
d62a17ae | 423 | /* If using "automatic" RT, we only care about the local-admin |
424 | * sub-field. | |
425 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
426 | */ | |
427 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
428 | if (!is_import_rt_configured(vpn)) | |
429 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 430 | |
d62a17ae | 431 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 432 | if (irt) |
d62a17ae | 433 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
434 | /* Already mapped. */ | |
435 | return; | |
128ea8ab | 436 | |
d62a17ae | 437 | if (!irt) { |
438 | irt = import_rt_new(bgp, &eval_tmp); | |
439 | assert(irt); | |
440 | } | |
128ea8ab | 441 | |
d62a17ae | 442 | /* Add VNI to the hash list for this RT. */ |
443 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 444 | } |
445 | ||
446 | /* | |
447 | * Unmap specified VNI from specified RT. If there are no other | |
448 | * VNIs for this RT, then the RT hash is deleted. | |
449 | */ | |
d62a17ae | 450 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
451 | struct irt_node *irt) | |
14c1a7bf | 452 | { |
d62a17ae | 453 | /* Delete VNI from hash list for this RT. */ |
454 | listnode_delete(irt->vnis, vpn); | |
455 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 456 | import_rt_free(bgp, irt); |
457 | } | |
14c1a7bf | 458 | } |
459 | ||
0ca10580 | 460 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 461 | const struct prefix_evpn *p, |
0ca10580 CS |
462 | struct attr *attr, uint8_t flags) |
463 | { | |
464 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
465 | ||
466 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
467 | if (!bgp_vrf) | |
468 | return; | |
469 | ||
b96cafa3 CS |
470 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
471 | return; | |
472 | ||
473 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
474 | * in case of route is self MAC-IP, | |
475 | * advertise-pip and advertise-svi-ip features | |
476 | * are enabled. | |
477 | * Otherwise, for all host MAC-IP route's | |
27727001 | 478 | * copy anycast RMAC. |
b96cafa3 CS |
479 | */ |
480 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
481 | && bgp_vrf->evpn_info->advertise_pip && | |
482 | bgp_vrf->evpn_info->is_anycast_mac) { | |
483 | /* copy sys rmac */ | |
484 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
485 | ETH_ALEN); | |
486 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
487 | attr->mp_nexthop_global_in = | |
488 | bgp_vrf->evpn_info->pip_ip; | |
489 | } else | |
490 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 491 | } |
b96cafa3 | 492 | |
128ea8ab | 493 | /* |
494 | * Create RT extended community automatically from passed information: | |
495 | * of the form AS:VNI. | |
496 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
497 | * the need is to get a RT value that will be unique across different | |
498 | * VNIs but the same across routers (in the same AS) for a particular | |
499 | * VNI. | |
500 | */ | |
c581d8b0 | 501 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 502 | { |
d62a17ae | 503 | struct ecommunity_val eval; |
b90d4580 CS |
504 | struct ecommunity *ecomadd, *ecom; |
505 | bool ecom_found = false; | |
506 | struct listnode *node; | |
128ea8ab | 507 | |
bf1061d8 VB |
508 | if (bgp->advertise_autort_rfc8365) |
509 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 510 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 511 | |
d62a17ae | 512 | ecomadd = ecommunity_new(); |
1207a5bc | 513 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
514 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
515 | if (ecommunity_cmp(ecomadd, ecom)) | |
516 | ecom_found = true; | |
517 | ||
518 | if (!ecom_found) | |
519 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
520 | else |
521 | ecommunity_free(&ecomadd); | |
128ea8ab | 522 | } |
14c1a7bf | 523 | |
524 | /* | |
128ea8ab | 525 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
526 | * creation of a VNI. | |
527 | */ | |
d62a17ae | 528 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 529 | { |
d62a17ae | 530 | bgp_evpn_derive_auto_rd(bgp, vpn); |
531 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
532 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 533 | } |
534 | ||
1ec31309 | 535 | /* |
536 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
537 | */ | |
538 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
539 | { | |
540 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
541 | return; | |
542 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
543 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
544 | } | |
545 | ||
09319b4e DS |
546 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
547 | safi_t safi, | |
548 | const struct prefix_evpn *evp, | |
549 | struct prefix_rd *prd) | |
c44ab6f1 AK |
550 | { |
551 | struct prefix_evpn global_p; | |
552 | ||
553 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
554 | /* prefix in the global table doesn't include the VTEP-IP so | |
555 | * we need to create a different copy of the prefix | |
556 | */ | |
557 | evpn_type1_prefix_global_copy(&global_p, evp); | |
558 | evp = &global_p; | |
559 | } | |
560 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
561 | } | |
562 | ||
09319b4e DS |
563 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
564 | safi_t safi, | |
565 | const struct prefix_evpn *evp, | |
566 | struct prefix_rd *prd) | |
c44ab6f1 AK |
567 | { |
568 | struct prefix_evpn global_p; | |
569 | ||
570 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
571 | /* prefix in the global table doesn't include the VTEP-IP so | |
572 | * we need to create a different copy of the prefix | |
573 | */ | |
574 | evpn_type1_prefix_global_copy(&global_p, evp); | |
575 | evp = &global_p; | |
576 | } | |
577 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
578 | } | |
579 | ||
128ea8ab | 580 | /* |
581 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 582 | */ |
d62a17ae | 583 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 584 | const struct prefix_evpn *p, |
d62a17ae | 585 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 586 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 587 | { |
588 | struct stream *s; | |
0ffd0fb5 | 589 | uint16_t ipa_len; |
c44ab6f1 | 590 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 591 | |
592 | /* Check socket. */ | |
593 | if (!zclient || zclient->sock < 0) | |
594 | return 0; | |
595 | ||
596 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
597 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
598 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
599 | zlog_debug( |
600 | "%s: No zebra instance to talk to, not installing remote macip", | |
601 | __func__); | |
d62a17ae | 602 | return 0; |
bb4ef1ae | 603 | } |
c44ab6f1 AK |
604 | |
605 | if (!esi) | |
606 | esi = zero_esi; | |
d62a17ae | 607 | s = zclient->obuf; |
608 | stream_reset(s); | |
609 | ||
996c9314 LB |
610 | zclient_create_header( |
611 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
612 | bgp->vrf_id); | |
d62a17ae | 613 | stream_putl(s, vpn->vni); |
3714a385 | 614 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 615 | /* IP address length and IP address, if any. */ |
3714a385 | 616 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 617 | stream_putw(s, 0); |
d62a17ae | 618 | else { |
3714a385 | 619 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 620 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 621 | stream_putw(s, ipa_len); |
3714a385 | 622 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 623 | } |
9c7edc03 AK |
624 | /* If the ESI is valid that becomes the nexthop; tape out the |
625 | * VTEP-IP for that case | |
c44ab6f1 | 626 | */ |
9c7edc03 | 627 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 628 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
629 | else |
630 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 631 | |
ead40654 | 632 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 633 | /* Also TX the sequence number of the best route. */ |
634 | if (add) { | |
ead40654 | 635 | stream_putc(s, flags); |
f07e1c99 | 636 | stream_putl(s, seq); |
c44ab6f1 | 637 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 638 | } |
d62a17ae | 639 | |
640 | stream_putw_at(s, 0, stream_get_endp(s)); | |
641 | ||
642 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 643 | zlog_debug( |
c0d72166 | 644 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 645 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
646 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
647 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 648 | |
649 | return zclient_send_message(zclient); | |
7ef5a232 | 650 | } |
b18825eb | 651 | |
128ea8ab | 652 | /* |
653 | * Add (update) or delete remote VTEP from zebra. | |
654 | */ | |
d62a17ae | 655 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
656 | const struct prefix_evpn *p, |
657 | int flood_control, int add) | |
128ea8ab | 658 | { |
d62a17ae | 659 | struct stream *s; |
128ea8ab | 660 | |
d62a17ae | 661 | /* Check socket. */ |
662 | if (!zclient || zclient->sock < 0) | |
663 | return 0; | |
128ea8ab | 664 | |
d62a17ae | 665 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
666 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
667 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
668 | zlog_debug( |
669 | "%s: No zebra instance to talk to, not installing remote vtep", | |
670 | __func__); | |
d62a17ae | 671 | return 0; |
bb4ef1ae | 672 | } |
128ea8ab | 673 | |
d62a17ae | 674 | s = zclient->obuf; |
675 | stream_reset(s); | |
128ea8ab | 676 | |
996c9314 LB |
677 | zclient_create_header( |
678 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
679 | bgp->vrf_id); | |
d62a17ae | 680 | stream_putl(s, vpn->vni); |
3714a385 | 681 | if (is_evpn_prefix_ipaddr_v4(p)) |
682 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
683 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 684 | flog_err( |
e50f7cfd | 685 | EC_BGP_VTEP_INVALID, |
d62a17ae | 686 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
687 | add ? "ADD" : "DEL", vpn->vni); | |
688 | return -1; | |
689 | } | |
b16dd019 | 690 | stream_putl(s, flood_control); |
128ea8ab | 691 | |
d62a17ae | 692 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 693 | |
d62a17ae | 694 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 695 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 696 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 697 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 698 | |
d62a17ae | 699 | return zclient_send_message(zclient); |
128ea8ab | 700 | } |
701 | ||
342dd0c6 | 702 | /* |
703 | * Build extended communities for EVPN prefix route. | |
704 | */ | |
705 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
706 | struct attr *attr) | |
707 | { | |
708 | struct ecommunity ecom_encap; | |
342dd0c6 | 709 | struct ecommunity_val eval; |
710 | struct ecommunity_val eval_rmac; | |
711 | bgp_encap_types tnl_type; | |
712 | struct listnode *node, *nnode; | |
713 | struct ecommunity *ecom; | |
fab92da7 | 714 | struct ecommunity *old_ecom; |
342dd0c6 | 715 | struct list *vrf_export_rtl = NULL; |
716 | ||
717 | /* Encap */ | |
718 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
719 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
720 | encode_encap_extcomm(tnl_type, &eval); | |
721 | ecom_encap.size = 1; | |
34540b0d | 722 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 723 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 724 | |
725 | /* Add Encap */ | |
fab92da7 | 726 | if (attr->ecommunity) { |
727 | old_ecom = attr->ecommunity; | |
728 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
729 | if (!old_ecom->refcnt) | |
730 | ecommunity_free(&old_ecom); | |
731 | } else | |
732 | ecom = ecommunity_dup(&ecom_encap); | |
733 | attr->ecommunity = ecom; | |
5bbd2cc1 | 734 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 735 | |
736 | /* Add the export RTs for L3VNI/VRF */ | |
737 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
738 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
739 | attr->ecommunity = | |
740 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 741 | |
742 | /* add the router mac extended community */ | |
743 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 744 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 745 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 746 | } |
747 | ||
748 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
749 | } | |
750 | ||
128ea8ab | 751 | /* |
1ec31309 | 752 | * Build extended communities for EVPN route. |
753 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
754 | * and ENCAP extended communities are applicable for all routes. | |
755 | * The default gateway extended community and MAC mobility (sticky) extended | |
756 | * community are added as needed based on passed settings - only for type-2 | |
757 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
758 | * added, if present, based on passed settings - only for non-link-local | |
759 | * type-2 routes. | |
128ea8ab | 760 | */ |
7ec156a9 | 761 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 762 | int add_l3_ecomm) |
128ea8ab | 763 | { |
d62a17ae | 764 | struct ecommunity ecom_encap; |
765 | struct ecommunity ecom_sticky; | |
ead40654 | 766 | struct ecommunity ecom_default_gw; |
68e33151 | 767 | struct ecommunity ecom_na; |
d62a17ae | 768 | struct ecommunity_val eval; |
769 | struct ecommunity_val eval_sticky; | |
ead40654 | 770 | struct ecommunity_val eval_default_gw; |
bc59a672 | 771 | struct ecommunity_val eval_rmac; |
68e33151 | 772 | struct ecommunity_val eval_na; |
9c7edc03 | 773 | bool proxy; |
68e33151 | 774 | |
d62a17ae | 775 | bgp_encap_types tnl_type; |
776 | struct listnode *node, *nnode; | |
777 | struct ecommunity *ecom; | |
d7c0a89a | 778 | uint32_t seqnum; |
7a3e76f1 | 779 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 780 | |
d62a17ae | 781 | /* Encap */ |
782 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
783 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
784 | encode_encap_extcomm(tnl_type, &eval); | |
785 | ecom_encap.size = 1; | |
34540b0d | 786 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 787 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 788 | |
d62a17ae | 789 | /* Add Encap */ |
790 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
5bbd2cc1 | 791 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 792 | |
7a3e76f1 | 793 | /* Add the export RTs for L2VNI */ |
d62a17ae | 794 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
795 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 796 | |
1ec31309 | 797 | /* Add the export RTs for L3VNI if told to - caller determines |
798 | * when this should be done. | |
523cafc4 | 799 | */ |
1ec31309 | 800 | if (add_l3_ecomm) { |
7ec156a9 MK |
801 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
802 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
803 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
804 | ecom)) | |
996c9314 LB |
805 | attr->ecommunity = ecommunity_merge( |
806 | attr->ecommunity, ecom); | |
7ec156a9 | 807 | } |
f1f8b53c | 808 | } |
7a3e76f1 | 809 | |
1ec31309 | 810 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 811 | if (attr->sticky) { |
812 | seqnum = 0; | |
813 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
814 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
815 | ecom_sticky.size = 1; | |
34540b0d | 816 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 817 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 818 | attr->ecommunity = |
819 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
820 | } | |
c85c03c7 | 821 | |
1ec31309 | 822 | /* Add RMAC, if told to. */ |
823 | if (add_l3_ecomm) { | |
bc59a672 | 824 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 825 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
826 | } |
827 | ||
1ec31309 | 828 | /* Add default gateway, if needed. */ |
ead40654 MK |
829 | if (attr->default_gw) { |
830 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
831 | encode_default_gw_extcomm(&eval_default_gw); | |
832 | ecom_default_gw.size = 1; | |
34540b0d | 833 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 834 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
835 | attr->ecommunity = |
836 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
837 | } |
838 | ||
9c7edc03 AK |
839 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
840 | if (attr->router_flag || proxy) { | |
68e33151 | 841 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 842 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 843 | ecom_na.size = 1; |
34540b0d | 844 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
845 | ecom_na.val = (uint8_t *)eval_na.val; |
846 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
847 | &ecom_na); | |
848 | } | |
849 | ||
d62a17ae | 850 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 851 | } |
852 | ||
853 | /* | |
854 | * Add MAC mobility extended community to attribute. | |
855 | */ | |
d7c0a89a | 856 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 857 | { |
858 | struct ecommunity ecom_tmp; | |
859 | struct ecommunity_val eval; | |
d7c0a89a | 860 | uint8_t *ecom_val_ptr; |
f6e07e1b | 861 | uint32_t i; |
d7c0a89a | 862 | uint8_t *pnt; |
d62a17ae | 863 | int type = 0; |
864 | int sub_type = 0; | |
865 | ||
866 | /* Build MM */ | |
867 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
868 | ||
869 | /* Find current MM ecommunity */ | |
421bb26a | 870 | ecom_val_ptr = NULL; |
d62a17ae | 871 | |
872 | if (attr->ecommunity) { | |
873 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
874 | pnt = attr->ecommunity->val + |
875 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 876 | type = *pnt++; |
877 | sub_type = *pnt++; | |
878 | ||
879 | if (type == ECOMMUNITY_ENCODE_EVPN | |
880 | && sub_type | |
881 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 882 | ecom_val_ptr = |
4371bf91 PG |
883 | (attr->ecommunity->val + |
884 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 885 | break; |
886 | } | |
887 | } | |
888 | } | |
889 | ||
890 | /* Update the existing MM ecommunity */ | |
421bb26a | 891 | if (ecom_val_ptr) { |
4371bf91 PG |
892 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
893 | * attr->ecommunity->unit_size); | |
d62a17ae | 894 | } |
895 | /* Add MM to existing */ | |
896 | else { | |
897 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
898 | ecom_tmp.size = 1; | |
34540b0d | 899 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 900 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 901 | |
f9a78910 DS |
902 | if (attr->ecommunity) |
903 | attr->ecommunity = | |
904 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
905 | else | |
906 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 907 | } |
128ea8ab | 908 | } |
909 | ||
910 | /* Install EVPN route into zebra. */ | |
d62a17ae | 911 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
912 | const struct prefix_evpn *p, |
913 | struct bgp_path_info *pi) | |
128ea8ab | 914 | { |
d62a17ae | 915 | int ret; |
d594a14c | 916 | uint8_t flags; |
b16dd019 | 917 | int flood_control; |
9c7edc03 | 918 | uint32_t seq; |
128ea8ab | 919 | |
d594a14c AK |
920 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
921 | flags = 0; | |
9c7edc03 AK |
922 | |
923 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
924 | if (pi->attr->sticky) | |
925 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
926 | if (pi->attr->default_gw) | |
927 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
928 | if (is_evpn_prefix_ipaddr_v6(p) && | |
929 | pi->attr->router_flag) | |
930 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
931 | ||
932 | seq = mac_mobility_seqnum(pi->attr); | |
933 | /* if local ES notify zebra that this is a sync path */ | |
934 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
935 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
936 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
937 | SET_FLAG(flags, | |
938 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
939 | } | |
940 | } else { | |
941 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
942 | return 0; | |
943 | ||
944 | /* if a local path is being turned around and sent | |
945 | * to zebra it is because it is a sync path on | |
946 | * a local ES | |
947 | */ | |
948 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
949 | /* supply the highest peer seq number to zebra | |
950 | * for MM seq syncing | |
951 | */ | |
952 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
953 | /* if any of the paths from the peer have the ROUTER | |
954 | * flag set install the local entry as a router entry | |
955 | */ | |
956 | if (is_evpn_prefix_ipaddr_v6(p) && | |
957 | (pi->attr->es_flags & | |
958 | ATTR_ES_PEER_ROUTER)) | |
959 | SET_FLAG(flags, | |
960 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
961 | ||
962 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
963 | SET_FLAG(flags, | |
964 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
965 | } | |
966 | ||
d594a14c | 967 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
968 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
969 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
970 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
971 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 972 | } else { |
2a3f51cf | 973 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
974 | case PMSI_TNLTYPE_INGR_REPL: |
975 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
976 | break; | |
977 | ||
978 | case PMSI_TNLTYPE_PIM_SM: | |
979 | flood_control = VXLAN_FLOOD_PIM_SM; | |
980 | break; | |
981 | ||
982 | default: | |
983 | flood_control = VXLAN_FLOOD_DISABLED; | |
984 | break; | |
985 | } | |
986 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 987 | } |
128ea8ab | 988 | |
d62a17ae | 989 | return ret; |
128ea8ab | 990 | } |
991 | ||
992 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 993 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 994 | const struct prefix_evpn *p, |
d62a17ae | 995 | struct in_addr remote_vtep_ip) |
128ea8ab | 996 | { |
d62a17ae | 997 | int ret; |
128ea8ab | 998 | |
d62a17ae | 999 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1000 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1001 | 0, 0, 0, NULL); |
1002 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1003 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1004 | else |
b16dd019 AK |
1005 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1006 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1007 | |
d62a17ae | 1008 | return ret; |
128ea8ab | 1009 | } |
1010 | ||
1011 | /* | |
1012 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1013 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1014 | * from peers. | |
1015 | */ | |
d62a17ae | 1016 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1017 | struct bgp_dest *dest, |
9c7edc03 AK |
1018 | struct bgp_path_info *old_local, |
1019 | struct bgp_path_info *new_select) | |
128ea8ab | 1020 | { |
9bcb3eef | 1021 | struct bgp_dest *global_dest; |
40381db7 | 1022 | struct bgp_path_info *pi; |
d62a17ae | 1023 | afi_t afi = AFI_L2VPN; |
1024 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1025 | |
9c7edc03 | 1026 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1027 | char esi_buf[ESI_STR_LEN]; |
1028 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1029 | struct prefix_evpn *evp = |
1030 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1031 | |
2dbe669b DA |
1032 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1033 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1034 | sizeof(esi_buf)), | |
1035 | new_select ? esi_to_str(&new_select->attr->esi, | |
1036 | esi_buf2, sizeof(esi_buf2)) | |
1037 | : ""); | |
9c7edc03 AK |
1038 | } |
1039 | ||
d62a17ae | 1040 | /* Locate route node in the global EVPN routing table. Note that |
1041 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1042 | * L3VPN routes. | |
1043 | */ | |
c44ab6f1 AK |
1044 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1045 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1046 | &vpn->prd); | |
9bcb3eef | 1047 | if (global_dest) { |
d62a17ae | 1048 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1049 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1050 | |
d62a17ae | 1051 | /* Schedule for processing - withdraws to peers happen from |
1052 | * this table. | |
1053 | */ | |
40381db7 | 1054 | if (pi) |
9bcb3eef DS |
1055 | bgp_process(bgp, global_dest, afi, safi); |
1056 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1057 | } |
128ea8ab | 1058 | |
d62a17ae | 1059 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1060 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1061 | } |
1062 | ||
1063 | /* | |
1064 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1065 | * if appropriate. | |
c44ab6f1 | 1066 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1067 | */ |
c44ab6f1 | 1068 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1069 | struct bgp_dest *dest) |
d62a17ae | 1070 | { |
4b7e6066 DS |
1071 | struct bgp_path_info *old_select, *new_select; |
1072 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1073 | afi_t afi = AFI_L2VPN; |
1074 | safi_t safi = SAFI_EVPN; | |
1075 | int ret = 0; | |
1076 | ||
1077 | /* Compute the best path. */ | |
9bcb3eef | 1078 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1079 | afi, safi); |
1080 | old_select = old_and_new.old; | |
1081 | new_select = old_and_new.new; | |
1082 | ||
1083 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1084 | * update to zebra RIB. |
1085 | * Remote routes and SYNC route (i.e. local routes with | |
1086 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1087 | * change. | |
d62a17ae | 1088 | */ |
1089 | if (old_select && old_select == new_select | |
1090 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1091 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1092 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1093 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1094 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1095 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1096 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1097 | ret = evpn_zebra_install( |
9bcb3eef DS |
1098 | bgp, vpn, |
1099 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1100 | dest), | |
d594a14c | 1101 | old_select); |
1defdda8 | 1102 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1103 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1104 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1105 | return ret; |
1106 | } | |
1107 | ||
1108 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1109 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1110 | |
1111 | /* bestpath has changed; update relevant fields and install or uninstall | |
1112 | * into the zebra RIB. | |
1113 | */ | |
1114 | if (old_select || new_select) | |
9bcb3eef | 1115 | bgp_bump_version(dest); |
d62a17ae | 1116 | |
1117 | if (old_select) | |
9bcb3eef | 1118 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1119 | if (new_select) { |
9bcb3eef DS |
1120 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1121 | bgp_path_info_unset_flag(dest, new_select, | |
1122 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1123 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1124 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1125 | } |
1126 | ||
9c7edc03 AK |
1127 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1128 | * to zebra | |
1129 | */ | |
d62a17ae | 1130 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1131 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1132 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1133 | ret = evpn_zebra_install( |
9bcb3eef DS |
1134 | bgp, vpn, |
1135 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1136 | new_select); |
d594a14c | 1137 | |
d62a17ae | 1138 | /* If an old best existed and it was a "local" route, the only |
1139 | * reason | |
1140 | * it would be supplanted is due to MAC mobility procedures. So, | |
1141 | * we | |
1142 | * need to do an implicit delete and withdraw that route from | |
1143 | * peers. | |
1144 | */ | |
9c7edc03 AK |
1145 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1146 | old_select && old_select->peer == bgp->peer_self | |
1147 | && old_select->type == ZEBRA_ROUTE_BGP | |
1148 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1149 | && vpn) | |
1150 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1151 | old_select, new_select); | |
d62a17ae | 1152 | } else { |
1153 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1154 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1155 | ret = evpn_zebra_uninstall( |
1156 | bgp, vpn, | |
9bcb3eef DS |
1157 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1158 | dest), | |
b54892e0 | 1159 | old_select->attr->nexthop); |
d62a17ae | 1160 | } |
1161 | ||
1162 | /* Clear any route change flags. */ | |
9bcb3eef | 1163 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1164 | |
18ee8310 | 1165 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1166 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1167 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1168 | |
1169 | return ret; | |
128ea8ab | 1170 | } |
1171 | ||
9c7edc03 AK |
1172 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1173 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1174 | { |
40381db7 | 1175 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1176 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1177 | |
9bcb3eef | 1178 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1179 | tmp_pi = tmp_pi->next) { |
1180 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1181 | local_pi = tmp_pi; |
9c7edc03 AK |
1182 | break; |
1183 | } | |
d62a17ae | 1184 | } |
c85c03c7 | 1185 | |
9c7edc03 | 1186 | return local_pi; |
c85c03c7 | 1187 | } |
1188 | ||
5e53dce3 | 1189 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1190 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1191 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1192 | struct attr *attr, int *route_changed) |
342dd0c6 | 1193 | { |
1194 | struct attr *attr_new = NULL; | |
40381db7 | 1195 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1196 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1197 | struct bgp_path_info *local_pi = NULL; |
1198 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1199 | |
5424b7ba | 1200 | *route_changed = 0; |
342dd0c6 | 1201 | /* locate the local route entry if any */ |
9bcb3eef | 1202 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1203 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1204 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1205 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1206 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1207 | local_pi = tmp_pi; | |
342dd0c6 | 1208 | } |
1209 | ||
2bb9eff4 | 1210 | /* |
0437e105 | 1211 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1212 | * Otherwise see if route attr has changed |
523cafc4 | 1213 | */ |
40381db7 | 1214 | if (!local_pi) { |
342dd0c6 | 1215 | |
5424b7ba MK |
1216 | /* route has changed as this is the first entry */ |
1217 | *route_changed = 1; | |
1218 | ||
342dd0c6 | 1219 | /* Add (or update) attribute to hash. */ |
1220 | attr_new = bgp_attr_intern(attr); | |
1221 | ||
1222 | /* create the route info from attribute */ | |
40381db7 | 1223 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1224 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1225 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1226 | |
b57ba6d2 | 1227 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1228 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1229 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1230 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1231 | pi->extra->num_labels = 1; | |
342dd0c6 | 1232 | |
1233 | /* add the route entry to route node*/ | |
9bcb3eef | 1234 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1235 | } else { |
1236 | ||
40381db7 DS |
1237 | tmp_pi = local_pi; |
1238 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1239 | |
1240 | /* attribute changed */ | |
1241 | *route_changed = 1; | |
1242 | ||
342dd0c6 | 1243 | /* The attribute has changed. */ |
1244 | /* Add (or update) attribute to hash. */ | |
1245 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1246 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1247 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1248 | |
1249 | /* Restore route, if needed. */ | |
40381db7 | 1250 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1251 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1252 | |
1253 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1254 | bgp_attr_unintern(&tmp_pi->attr); |
1255 | tmp_pi->attr = attr_new; | |
1256 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1257 | } |
1258 | } | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | /* update evpn type-5 route entry */ | |
996c9314 | 1263 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1264 | struct attr *src_attr, afi_t src_afi, |
1265 | safi_t src_safi) | |
342dd0c6 | 1266 | { |
1267 | afi_t afi = AFI_L2VPN; | |
1268 | safi_t safi = SAFI_EVPN; | |
1269 | struct attr attr; | |
9bcb3eef | 1270 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1271 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1272 | int route_changed = 0; |
342dd0c6 | 1273 | |
5e53dce3 T |
1274 | bgp_evpn = bgp_get_evpn(); |
1275 | if (!bgp_evpn) | |
faafdfa8 | 1276 | return 0; |
342dd0c6 | 1277 | |
2f69f6d3 | 1278 | /* Build path attribute for this route - use the source attr, if |
1279 | * present, else treat as locally originated. | |
1280 | */ | |
1281 | if (src_attr) | |
6f4f49b2 | 1282 | attr = *src_attr; |
2f69f6d3 | 1283 | else { |
1284 | memset(&attr, 0, sizeof(struct attr)); | |
1285 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1286 | } | |
5394a276 | 1287 | |
5394a276 CS |
1288 | /* Advertise Primary IP (PIP) is enabled, send individual |
1289 | * IP (default instance router-id) as nexthop. | |
1290 | * PIP is disabled or vrr interface is not present | |
27727001 | 1291 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1292 | */ |
1293 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1294 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1295 | attr.nexthop = bgp_vrf->originator_ip; | |
1296 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1297 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1298 | } else { |
27727001 CS |
1299 | /* copy sys rmac */ |
1300 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1301 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1302 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1303 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1304 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1305 | if (bgp_debug_zebra(NULL)) |
1306 | zlog_debug( | |
1307 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1308 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1309 | } |
1310 | ||
c0d72166 DS |
1311 | if (bgp_debug_zebra(NULL)) |
1312 | zlog_debug( | |
1313 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1314 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1315 | &attr.nexthop); | |
5394a276 | 1316 | |
342dd0c6 | 1317 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1318 | |
6c995628 AD |
1319 | if (src_afi == AFI_IP6 && |
1320 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1321 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1322 | if (src_attr && | |
1323 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1324 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1325 | memcpy(&attr.evpn_overlay.gw_ip.ipv6, | |
1326 | &src_attr->mp_nexthop_global, | |
1327 | sizeof(struct in6_addr)); | |
1328 | } | |
1329 | } else if (src_afi == AFI_IP && | |
1330 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1331 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1332 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1333 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1334 | memcpy(&attr.evpn_overlay.gw_ip.ipv4, | |
1335 | &src_attr->nexthop, sizeof(struct in_addr)); | |
1336 | } | |
1337 | } | |
1338 | ||
342dd0c6 | 1339 | /* Setup RT and encap extended community */ |
1340 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1341 | ||
1342 | /* get the route node in global table */ | |
c44ab6f1 AK |
1343 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1344 | (const struct prefix_evpn *)evp, | |
1345 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1346 | assert(dest); |
342dd0c6 | 1347 | |
1348 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1349 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1350 | &route_changed); |
342dd0c6 | 1351 | |
1352 | /* schedule for processing and unlock node */ | |
5424b7ba | 1353 | if (route_changed) { |
9bcb3eef DS |
1354 | bgp_process(bgp_evpn, dest, afi, safi); |
1355 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1356 | } |
342dd0c6 | 1357 | |
1358 | /* uninten temporary */ | |
5ee65f6f | 1359 | if (!src_attr) |
1360 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1361 | return 0; |
1362 | } | |
1363 | ||
9c7edc03 | 1364 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1365 | struct bgp_dest *dest, uint32_t loc_seq, |
1366 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1367 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1368 | { |
1369 | struct bgp_path_info *tmp_pi; | |
1370 | struct bgp_path_info *second_best_path = NULL; | |
1371 | uint32_t tmp_mm_seq = 0; | |
1372 | esi_t *tmp_esi; | |
1373 | int paths_eq; | |
1374 | ||
1375 | /* find the best non-local path. a local path can only be present | |
1376 | * as best path | |
1377 | */ | |
09319b4e DS |
1378 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1379 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1380 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1381 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1382 | continue; | |
1383 | ||
1384 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1385 | second_best_path, &paths_eq)) | |
1386 | second_best_path = tmp_pi; | |
1387 | } | |
1388 | ||
1389 | if (!second_best_path) | |
1390 | return; | |
1391 | ||
1392 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1393 | /* if this has the same ES desination as the local path | |
1394 | * it is a sync path | |
1395 | */ | |
1396 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1397 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1398 | if (tmp_mm_seq < loc_seq) | |
1399 | return; | |
1400 | ||
1401 | /* we have a non-proxy path from the ES peer. */ | |
1402 | if (second_best_path->attr->es_flags & | |
1403 | ATTR_ES_PROXY_ADVERT) { | |
1404 | *proxy_from_peer = true; | |
1405 | } else { | |
1406 | *active_on_peer = true; | |
1407 | } | |
1408 | ||
1409 | if (second_best_path->attr->router_flag) | |
1410 | *peer_router = true; | |
1411 | ||
1412 | /* we use both proxy and non-proxy imports to | |
1413 | * determine the max sync sequence | |
1414 | */ | |
1415 | if (tmp_mm_seq > *max_sync_seq) | |
1416 | *max_sync_seq = tmp_mm_seq; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1421 | * This is need for MM sequence number syncing and proxy advertisement. | |
1422 | * Note: The local path can only exist as a best path in the | |
1423 | * VPN route table. It will take precedence over all sync paths. | |
1424 | */ | |
1425 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1426 | struct bgp_dest *dest, |
1427 | struct attr *attr, | |
1428 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1429 | { |
1430 | esi_t *esi; | |
752eed47 DS |
1431 | struct prefix_evpn *evp = |
1432 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1433 | |
1434 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1435 | return; | |
1436 | ||
1437 | esi = bgp_evpn_attr_get_esi(attr); | |
1438 | if (bgp_evpn_is_esi_valid(esi)) { | |
1439 | if (setup_sync) { | |
1440 | uint32_t max_sync_seq = 0; | |
1441 | bool active_on_peer = false; | |
1442 | bool peer_router = false; | |
1443 | bool proxy_from_peer = false; | |
1444 | ||
09319b4e DS |
1445 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1446 | &max_sync_seq, &active_on_peer, | |
1447 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1448 | attr->mm_sync_seqnum = max_sync_seq; |
1449 | if (active_on_peer) | |
1450 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1451 | else | |
1452 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1453 | if (proxy_from_peer) | |
1454 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1455 | else | |
1456 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1457 | if (peer_router) | |
1458 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1459 | else | |
1460 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1461 | ||
1462 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1463 | char esi_buf[ESI_STR_LEN]; |
1464 | ||
2dbe669b DA |
1465 | zlog_debug( |
1466 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1467 | evp, | |
9c7edc03 | 1468 | esi_to_str(esi, esi_buf, |
2dbe669b | 1469 | sizeof(esi_buf)), |
9c7edc03 | 1470 | max_sync_seq, |
2dbe669b DA |
1471 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1472 | ? "peer-active " | |
1473 | : "", | |
1474 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1475 | ? "peer-proxy " | |
1476 | : "", | |
1477 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1478 | ? "peer-router " | |
1479 | : ""); | |
9c7edc03 AK |
1480 | } |
1481 | } | |
1482 | } else { | |
1483 | attr->mm_sync_seqnum = 0; | |
1484 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1485 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1486 | } | |
1487 | } | |
1488 | ||
128ea8ab | 1489 | /* |
1490 | * Create or update EVPN route entry. This could be in the VNI route table | |
1491 | * or the global route table. | |
1492 | */ | |
d62a17ae | 1493 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1494 | afi_t afi, safi_t safi, |
1495 | struct bgp_dest *dest, struct attr *attr, | |
1496 | int add, struct bgp_path_info **pi, | |
1497 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1498 | bool *old_is_sync) |
d62a17ae | 1499 | { |
40381db7 DS |
1500 | struct bgp_path_info *tmp_pi; |
1501 | struct bgp_path_info *local_pi; | |
d62a17ae | 1502 | struct attr *attr_new; |
b57ba6d2 | 1503 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1504 | uint32_t num_labels = 1; |
d62a17ae | 1505 | int route_change = 1; |
d7c0a89a | 1506 | uint8_t sticky = 0; |
b54892e0 | 1507 | const struct prefix_evpn *evp; |
d62a17ae | 1508 | |
40381db7 | 1509 | *pi = NULL; |
9bcb3eef | 1510 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1511 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1512 | |
f07e1c99 | 1513 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1514 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1515 | |
1516 | /* If route doesn't exist already, create a new one, if told to. | |
1517 | * Otherwise act based on whether the attributes of the route have | |
1518 | * changed or not. | |
1519 | */ | |
40381db7 | 1520 | if (!local_pi && !add) |
d62a17ae | 1521 | return 0; |
1522 | ||
9c7edc03 AK |
1523 | if (old_is_sync && local_pi) |
1524 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1525 | ||
1526 | /* if a local path is being added with a non-zero esi look | |
1527 | * for SYNC paths from ES peers and bubble up the sync-info | |
1528 | */ | |
26c03e43 | 1529 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1530 | |
f07e1c99 | 1531 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1532 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1533 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1534 | |
40381db7 | 1535 | if (!local_pi) { |
d62a17ae | 1536 | /* Add (or update) attribute to hash. */ |
1537 | attr_new = bgp_attr_intern(attr); | |
1538 | ||
1539 | /* Extract MAC mobility sequence number, if any. */ | |
1540 | attr_new->mm_seqnum = | |
1541 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1542 | attr_new->sticky = sticky; | |
1543 | ||
1544 | /* Create new route with its attribute. */ | |
40381db7 | 1545 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1546 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1547 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1548 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1549 | |
1550 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1551 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1552 | |
1553 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1554 | * Only attach second label if we are advertising two labels for | |
1555 | * type-2 routes. | |
1556 | */ | |
996c9314 LB |
1557 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1558 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1559 | vni_t l3vni; |
1560 | ||
1561 | l3vni = bgpevpn_get_l3vni(vpn); | |
1562 | if (l3vni) { | |
1563 | vni2label(l3vni, &label[1]); | |
1564 | num_labels++; | |
1565 | } | |
1566 | } | |
d62a17ae | 1567 | |
40381db7 DS |
1568 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1569 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1570 | /* Mark route as self type-2 route */ |
1571 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1572 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1573 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1574 | } else { |
40381db7 DS |
1575 | tmp_pi = local_pi; |
1576 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1577 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1578 | route_change = 0; |
1579 | else { | |
c48d9f5f MK |
1580 | /* |
1581 | * The attributes have changed, type-2 routes needs to | |
1582 | * be advertised with right labels. | |
1583 | */ | |
1584 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1585 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1586 | && CHECK_FLAG(vpn->flags, | |
1587 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1588 | vni_t l3vni; |
1589 | ||
1590 | l3vni = bgpevpn_get_l3vni(vpn); | |
1591 | if (l3vni) { | |
1592 | vni2label(l3vni, &label[1]); | |
1593 | num_labels++; | |
1594 | } | |
1595 | } | |
40381db7 DS |
1596 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1597 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1598 | |
d62a17ae | 1599 | /* The attribute has changed. */ |
1600 | /* Add (or update) attribute to hash. */ | |
1601 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1602 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1603 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1604 | |
f07e1c99 | 1605 | /* Extract MAC mobility sequence number, if any. */ |
1606 | attr_new->mm_seqnum = | |
1607 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1608 | attr_new->sticky = sticky; | |
1609 | ||
d62a17ae | 1610 | /* Restore route, if needed. */ |
40381db7 | 1611 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1612 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1613 | |
1614 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1615 | bgp_attr_unintern(&tmp_pi->attr); |
1616 | tmp_pi->attr = attr_new; | |
1617 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1618 | } |
1619 | } | |
1620 | ||
58bff4d1 AK |
1621 | /* local MAC-IP routes in the VNI table are linked to |
1622 | * the destination ES | |
26c03e43 AK |
1623 | */ |
1624 | if (route_change && vpn_rt | |
1625 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1626 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1627 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1628 | ||
d62a17ae | 1629 | /* Return back the route entry. */ |
40381db7 | 1630 | *pi = tmp_pi; |
d62a17ae | 1631 | return route_change; |
128ea8ab | 1632 | } |
1633 | ||
ec0ab544 | 1634 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1635 | struct bgpevpn *vpn, |
1636 | struct bgp_dest *dest) | |
ec0ab544 AK |
1637 | { |
1638 | struct bgp_path_info *tmp_ri; | |
1639 | struct bgp_path_info *curr_select = NULL; | |
1640 | ||
9bcb3eef DS |
1641 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1642 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1643 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1644 | curr_select = tmp_ri; | |
1645 | break; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1650 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1651 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1652 | evpn_zebra_install(bgp, vpn, | |
1653 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1654 | curr_select); | |
ec0ab544 AK |
1655 | } |
1656 | ||
6d8c603a AK |
1657 | /* |
1658 | * If the local route was not selected evict it and tell zebra to re-add | |
1659 | * the best remote dest. | |
1660 | * | |
1661 | * Typically a local path added by zebra is expected to be selected as | |
1662 | * best. In which case when a remote path wins as best (later) | |
1663 | * evpn_route_select_install itself evicts the older-local-best path. | |
1664 | * | |
1665 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1666 | * is possible that the local path is no longer the "older" best path. | |
1667 | * It is a path that was never designated as best and hence requires | |
1668 | * additional handling to prevent bgp from injecting and holding on to a | |
1669 | * non-best local path. | |
1670 | */ | |
1671 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1672 | struct bgpevpn *vpn, | |
9bcb3eef | 1673 | struct bgp_dest *dest, |
9a8897aa | 1674 | struct bgp_path_info *local_pi) |
6d8c603a | 1675 | { |
6d8c603a | 1676 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1677 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1678 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1679 | dest); |
b54892e0 | 1680 | |
9c7edc03 | 1681 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1682 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1683 | |
1684 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1685 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1686 | } |
1687 | ||
70524092 AK |
1688 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1689 | const struct prefix_evpn *p, | |
1690 | esi_t *esi) | |
1691 | { | |
1692 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1693 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1694 | || (is_evpn_prefix_ipaddr_v6(p) |
1695 | && !IN6_IS_ADDR_LINKLOCAL( | |
1696 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1697 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1698 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1699 | } | |
1700 | ||
128ea8ab | 1701 | /* |
1702 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1703 | * and schedule for processing. | |
1704 | */ | |
d62a17ae | 1705 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1706 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1707 | uint32_t seq, esi_t *esi) |
128ea8ab | 1708 | { |
9bcb3eef | 1709 | struct bgp_dest *dest; |
d62a17ae | 1710 | struct attr attr; |
1711 | struct attr *attr_new; | |
1ec31309 | 1712 | int add_l3_ecomm = 0; |
40381db7 | 1713 | struct bgp_path_info *pi; |
d62a17ae | 1714 | afi_t afi = AFI_L2VPN; |
1715 | safi_t safi = SAFI_EVPN; | |
1716 | int route_change; | |
9c7edc03 | 1717 | bool old_is_sync = false; |
128ea8ab | 1718 | |
d62a17ae | 1719 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1720 | |
d62a17ae | 1721 | /* Build path-attribute for this route. */ |
1722 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1723 | attr.nexthop = vpn->originator_ip; | |
1724 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1725 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1726 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1727 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1728 | attr.router_flag = CHECK_FLAG(flags, |
1729 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1730 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1731 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1732 | ||
1733 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1734 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1735 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1736 | } | |
1737 | ||
be41eb68 | 1738 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1739 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1740 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1741 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1742 | } |
be41eb68 | 1743 | |
9c7edc03 | 1744 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1745 | char buf3[ESI_STR_LEN]; |
1746 | ||
23d0a753 | 1747 | zlog_debug( |
c0d72166 | 1748 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1749 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1750 | : " ", | |
c0d72166 | 1751 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1752 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1753 | } |
1ec31309 | 1754 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1755 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1756 | uint8_t af_flags = 0; | |
1757 | ||
1758 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1759 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1760 | ||
1761 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1762 | } |
1763 | ||
a21bd7a3 | 1764 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1765 | |
1ec31309 | 1766 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1767 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1768 | * these routes. | |
1769 | */ | |
70524092 AK |
1770 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1771 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1772 | |
1773 | /* Set up extended community. */ | |
1774 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1775 | |
d62a17ae | 1776 | /* First, create (or fetch) route node within the VNI. */ |
1777 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1778 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1779 | |
d62a17ae | 1780 | /* Create or update route entry. */ |
9bcb3eef | 1781 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1782 | 1, &pi, flags, seq, |
1783 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1784 | assert(pi); |
1785 | attr_new = pi->attr; | |
128ea8ab | 1786 | |
6d8c603a AK |
1787 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1788 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1789 | |
1790 | /* Perform route selection. Normally, the local route in the | |
1791 | * VNI is expected to win and be the best route. However, if | |
1792 | * there is a race condition where a host moved from local to | |
1793 | * remote and the remote route was received in BGP just prior | |
1794 | * to the local MACIP notification from zebra, the remote | |
1795 | * route would win, and we should evict the defunct local route | |
1796 | * and (re)install the remote route into zebra. | |
1797 | */ | |
9bcb3eef | 1798 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1799 | /* |
9a8897aa AK |
1800 | * If the new local route was not selected evict it and tell zebra |
1801 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1802 | * routes. | |
6d8c603a | 1803 | */ |
9c7edc03 | 1804 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1805 | route_change = 0; |
9c7edc03 AK |
1806 | } else { |
1807 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1808 | route_change = 0; | |
1809 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1810 | } else { | |
1811 | bool new_is_sync; | |
1812 | ||
1813 | /* If the local path already existed and is still the | |
1814 | * best path we need to also check if it transitioned | |
1815 | * from being a sync path to a non-sync path. If it | |
1816 | * it did we need to notify zebra that the sync-path | |
1817 | * has been removed. | |
1818 | */ | |
1819 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1820 | if (!new_is_sync && old_is_sync) | |
1821 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1822 | } | |
9a8897aa | 1823 | } |
6d8c603a AK |
1824 | bgp_path_info_unlock(pi); |
1825 | ||
9bcb3eef | 1826 | bgp_dest_unlock_node(dest); |
128ea8ab | 1827 | |
d62a17ae | 1828 | /* If this is a new route or some attribute has changed, export the |
1829 | * route to the global table. The route will be advertised to peers | |
1830 | * from there. Note that this table is a 2-level tree (RD-level + | |
1831 | * Prefix-level) similar to L3VPN routes. | |
1832 | */ | |
1833 | if (route_change) { | |
40381db7 | 1834 | struct bgp_path_info *global_pi; |
128ea8ab | 1835 | |
c44ab6f1 AK |
1836 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1837 | (const struct prefix_evpn *)p, | |
1838 | &vpn->prd); | |
9bcb3eef | 1839 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1840 | &global_pi, flags, seq, |
1841 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1842 | |
d62a17ae | 1843 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1844 | bgp_process(bgp, dest, afi, safi); |
1845 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1846 | } |
128ea8ab | 1847 | |
d62a17ae | 1848 | /* Unintern temporary. */ |
1849 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1850 | |
d62a17ae | 1851 | return 0; |
128ea8ab | 1852 | } |
1853 | ||
50f74cf1 | 1854 | /* |
1855 | * Delete EVPN route entry. | |
1856 | * The entry can be in ESI/VNI table or the global table. | |
1857 | */ | |
185fb14a | 1858 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1859 | struct bgp_dest *dest, |
40381db7 | 1860 | struct bgp_path_info **pi) |
342dd0c6 | 1861 | { |
40381db7 | 1862 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1863 | |
40381db7 | 1864 | *pi = NULL; |
342dd0c6 | 1865 | |
50f74cf1 | 1866 | /* Now, find matching route. */ |
9bcb3eef | 1867 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1868 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1869 | if (tmp_pi->peer == bgp->peer_self |
1870 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1871 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1872 | break; |
1873 | ||
40381db7 | 1874 | *pi = tmp_pi; |
342dd0c6 | 1875 | |
1876 | /* Mark route for delete. */ | |
40381db7 | 1877 | if (tmp_pi) |
9bcb3eef | 1878 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1879 | } |
1880 | ||
1881 | /* Delete EVPN type5 route */ | |
996c9314 | 1882 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1883 | { |
1884 | afi_t afi = AFI_L2VPN; | |
1885 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1886 | struct bgp_dest *dest = NULL; |
40381db7 | 1887 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1888 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1889 | |
5e53dce3 T |
1890 | bgp_evpn = bgp_get_evpn(); |
1891 | if (!bgp_evpn) | |
faafdfa8 | 1892 | return 0; |
342dd0c6 | 1893 | |
1894 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1895 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1896 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1897 | if (!dest) |
342dd0c6 | 1898 | return 0; |
1899 | ||
9bcb3eef | 1900 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1901 | if (pi) |
9bcb3eef DS |
1902 | bgp_process(bgp_evpn, dest, afi, safi); |
1903 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1904 | return 0; |
1905 | } | |
1906 | ||
128ea8ab | 1907 | /* |
1908 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1909 | * schedule for processing. | |
1910 | */ | |
d62a17ae | 1911 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1912 | struct prefix_evpn *p) | |
1913 | { | |
9bcb3eef | 1914 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1915 | struct bgp_path_info *pi; |
d62a17ae | 1916 | afi_t afi = AFI_L2VPN; |
1917 | safi_t safi = SAFI_EVPN; | |
1918 | ||
1919 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1920 | * there | |
1921 | * is nothing further to do. | |
1922 | */ | |
1923 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1924 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1925 | if (!dest) | |
d62a17ae | 1926 | return 0; |
1927 | ||
1928 | /* Next, locate route node in the global EVPN routing table. Note that | |
1929 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1930 | * L3VPN routes. | |
1931 | */ | |
c44ab6f1 AK |
1932 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1933 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1934 | if (global_dest) { |
d62a17ae | 1935 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1936 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1937 | |
1938 | /* Schedule for processing - withdraws to peers happen from | |
1939 | * this table. | |
1940 | */ | |
40381db7 | 1941 | if (pi) |
9bcb3eef DS |
1942 | bgp_process(bgp, global_dest, afi, safi); |
1943 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1944 | } |
1945 | ||
1946 | /* Delete route entry in the VNI route table. This can just be removed. | |
1947 | */ | |
9bcb3eef | 1948 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1949 | if (pi) { |
9bcb3eef DS |
1950 | bgp_path_info_reap(dest, pi); |
1951 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1952 | } |
9bcb3eef | 1953 | bgp_dest_unlock_node(dest); |
d62a17ae | 1954 | |
1955 | return 0; | |
128ea8ab | 1956 | } |
1957 | ||
70524092 AK |
1958 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1959 | struct bgp_dest *dest, | |
1960 | struct bgp_path_info *local_pi, | |
1961 | const char *caller) | |
9c7edc03 AK |
1962 | { |
1963 | afi_t afi = AFI_L2VPN; | |
1964 | safi_t safi = SAFI_EVPN; | |
1965 | struct bgp_path_info *pi; | |
1966 | struct attr attr; | |
1967 | struct attr *attr_new; | |
1968 | uint32_t seq; | |
1969 | int add_l3_ecomm = 0; | |
09319b4e | 1970 | struct bgp_dest *global_dest; |
9c7edc03 | 1971 | struct bgp_path_info *global_pi; |
752eed47 DS |
1972 | struct prefix_evpn *evp = |
1973 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1974 | int route_change; |
1975 | bool old_is_sync = false; | |
1976 | ||
1977 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1978 | return; | |
1979 | ||
1980 | /* | |
1981 | * Build attribute per local route as the MAC mobility and | |
1982 | * some other values could differ for different routes. The | |
1983 | * attributes will be shared in the hash table. | |
1984 | */ | |
1985 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1986 | attr.nexthop = vpn->originator_ip; | |
1987 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1988 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1989 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1990 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1991 | attr.es_flags = local_pi->attr->es_flags; | |
1992 | if (local_pi->attr->default_gw) { | |
1993 | attr.default_gw = 1; | |
1994 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1995 | attr.router_flag = 1; | |
1996 | } | |
1997 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1998 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1999 | local_pi->extra->af_flags); | |
2000 | vni2label(vpn->vni, &(attr.label)); | |
2001 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2002 | * using L3 VNI for type-2 routes also. | |
2003 | */ | |
70524092 AK |
2004 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2005 | vpn, evp, | |
2006 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2007 | |
2008 | /* Set up extended community. */ | |
2009 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2010 | seq = mac_mobility_seqnum(local_pi->attr); | |
2011 | ||
2012 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2013 | char buf3[ESI_STR_LEN]; |
2014 | ||
23d0a753 | 2015 | zlog_debug( |
c0d72166 | 2016 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2017 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2018 | : " ", | |
c0d72166 | 2019 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2020 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2021 | attr.es_flags, caller); | |
9c7edc03 AK |
2022 | } |
2023 | ||
2024 | /* Update the route entry. */ | |
09319b4e DS |
2025 | route_change = update_evpn_route_entry( |
2026 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2027 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2028 | |
2029 | assert(pi); | |
2030 | attr_new = pi->attr; | |
2031 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2032 | bgp_path_info_lock(pi); | |
2033 | ||
2034 | /* Perform route selection. Normally, the local route in the | |
2035 | * VNI is expected to win and be the best route. However, | |
2036 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2037 | * that causes best selection to be based on next hop), a | |
2038 | * remote route could win. If the local route is the best, | |
2039 | * ensure it is updated in the global EVPN route table and | |
2040 | * advertised to peers; otherwise, ensure it is evicted and | |
2041 | * (re)install the remote route into zebra. | |
2042 | */ | |
09319b4e | 2043 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2044 | |
2045 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2046 | route_change = 0; | |
2047 | } else { | |
2048 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2049 | route_change = 0; | |
09319b4e | 2050 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2051 | } else { |
2052 | bool new_is_sync; | |
2053 | ||
2054 | /* If the local path already existed and is still the | |
2055 | * best path we need to also check if it transitioned | |
2056 | * from being a sync path to a non-sync path. If it | |
2057 | * it did we need to notify zebra that the sync-path | |
2058 | * has been removed. | |
2059 | */ | |
2060 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2061 | if (!new_is_sync && old_is_sync) | |
2062 | evpn_zebra_uninstall(bgp, vpn, | |
2063 | evp, zero_vtep_ip); | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | ||
2068 | /* unlock pi */ | |
2069 | bgp_path_info_unlock(pi); | |
2070 | ||
2071 | if (route_change) { | |
2072 | /* Update route in global routing table. */ | |
09319b4e DS |
2073 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2074 | safi, evp, &vpn->prd); | |
2075 | assert(global_dest); | |
2076 | update_evpn_route_entry( | |
2077 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2078 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2079 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2080 | |
2081 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2082 | bgp_process(bgp, global_dest, afi, safi); |
2083 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2084 | } |
2085 | ||
2086 | /* Unintern temporary. */ | |
2087 | aspath_unintern(&attr.aspath); | |
2088 | } | |
2089 | ||
128ea8ab | 2090 | /* |
2091 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2092 | * be scheduled for advertise to peers. | |
2093 | */ | |
d62a17ae | 2094 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2095 | { | |
9bcb3eef | 2096 | struct bgp_dest *dest; |
9c7edc03 | 2097 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2098 | |
2099 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2100 | * routes updated, update corresponding entry in the global table too. | |
2101 | */ | |
9bcb3eef | 2102 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2103 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2104 | const struct prefix_evpn *evp = |
2105 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2106 | |
2107 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2108 | continue; | |
2109 | ||
f07e1c99 | 2110 | /* Identify local route. */ |
9bcb3eef | 2111 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2112 | tmp_pi = tmp_pi->next) { |
40381db7 | 2113 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2114 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2115 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2116 | break; |
7ec156a9 | 2117 | } |
d62a17ae | 2118 | |
40381db7 | 2119 | if (!tmp_pi) |
d62a17ae | 2120 | continue; |
2121 | ||
9c7edc03 AK |
2122 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2123 | __func__); | |
f07e1c99 | 2124 | } |
d62a17ae | 2125 | |
2126 | return 0; | |
128ea8ab | 2127 | } |
2128 | ||
2129 | /* | |
2130 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2131 | * global routing table. These are also scheduled for withdraw from peers. | |
2132 | */ | |
d62a17ae | 2133 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2134 | { |
d62a17ae | 2135 | afi_t afi; |
2136 | safi_t safi; | |
9bcb3eef | 2137 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2138 | struct bgp_table *table; |
40381db7 | 2139 | struct bgp_path_info *pi; |
128ea8ab | 2140 | |
d62a17ae | 2141 | afi = AFI_L2VPN; |
2142 | safi = SAFI_EVPN; | |
128ea8ab | 2143 | |
9bcb3eef DS |
2144 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2145 | (struct prefix *)&vpn->prd); | |
2146 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2147 | table = bgp_dest_get_bgp_table_info(rddest); | |
2148 | for (dest = bgp_table_top(table); dest; | |
2149 | dest = bgp_route_next(dest)) { | |
2150 | const struct prefix_evpn *evp = | |
2151 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2152 | dest); | |
128ea8ab | 2153 | |
d62a17ae | 2154 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2155 | continue; | |
128ea8ab | 2156 | |
9bcb3eef | 2157 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2158 | if (pi) |
9bcb3eef | 2159 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2160 | } |
2161 | } | |
128ea8ab | 2162 | |
d62a17ae | 2163 | /* Unlock RD node. */ |
9bcb3eef DS |
2164 | if (rddest) |
2165 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2166 | |
d62a17ae | 2167 | return 0; |
128ea8ab | 2168 | } |
2169 | ||
2170 | /* | |
2171 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2172 | * table as well as the per-VNI route table. | |
2173 | */ | |
d62a17ae | 2174 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2175 | { |
d62a17ae | 2176 | afi_t afi; |
2177 | safi_t safi; | |
9bcb3eef | 2178 | struct bgp_dest *dest; |
40381db7 | 2179 | struct bgp_path_info *pi; |
128ea8ab | 2180 | |
d62a17ae | 2181 | afi = AFI_L2VPN; |
2182 | safi = SAFI_EVPN; | |
128ea8ab | 2183 | |
d62a17ae | 2184 | /* First, walk the global route table for this VNI's type-2 local |
2185 | * routes. | |
2186 | * EVPN routes are a 2-level table, first get the RD table. | |
2187 | */ | |
2188 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2189 | |
d62a17ae | 2190 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2191 | for (dest = bgp_table_top(vpn->route_table); dest; |
2192 | dest = bgp_route_next(dest)) { | |
2193 | const struct prefix_evpn *evp = | |
2194 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2195 | |
d62a17ae | 2196 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2197 | continue; | |
128ea8ab | 2198 | |
9bcb3eef | 2199 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2200 | |
d62a17ae | 2201 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2202 | if (pi) |
9bcb3eef | 2203 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2204 | } |
128ea8ab | 2205 | |
d62a17ae | 2206 | return 0; |
128ea8ab | 2207 | } |
2208 | ||
2209 | /* | |
2210 | * Delete all routes in the per-VNI route table. | |
2211 | */ | |
d62a17ae | 2212 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2213 | { |
9bcb3eef | 2214 | struct bgp_dest *dest; |
40381db7 | 2215 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2216 | |
d62a17ae | 2217 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2218 | for (dest = bgp_table_top(vpn->route_table); dest; |
2219 | dest = bgp_route_next(dest)) { | |
2220 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2221 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2222 | bgp_path_info_delete(dest, pi); |
2223 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2224 | } |
2225 | } | |
128ea8ab | 2226 | |
d62a17ae | 2227 | return 0; |
128ea8ab | 2228 | } |
2229 | ||
833b8a50 AK |
2230 | /* BUM traffic flood mode per-l2-vni */ |
2231 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2232 | struct bgpevpn *vpn) | |
2233 | { | |
2234 | /* if flooding has been globally disabled per-vni mode is | |
2235 | * not relevant | |
2236 | */ | |
2237 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2238 | return VXLAN_FLOOD_DISABLED; | |
2239 | ||
2240 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2241 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2242 | return VXLAN_FLOOD_PIM_SM; | |
2243 | ||
2244 | /* default is ingress replication */ | |
2245 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2246 | } | |
2247 | ||
128ea8ab | 2248 | /* |
2249 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2250 | * export RT getting modified or change to tunnel IP. Note that these | |
2251 | * situations need the route in the per-VNI table as well as the global | |
2252 | * table to be updated (as attributes change). | |
2253 | */ | |
0ca10580 | 2254 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2255 | { |
d62a17ae | 2256 | int ret; |
2257 | struct prefix_evpn p; | |
128ea8ab | 2258 | |
9c49ac74 AD |
2259 | update_type1_routes_for_evi(bgp, vpn); |
2260 | ||
d62a17ae | 2261 | /* Update and advertise the type-3 route (only one) followed by the |
2262 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2263 | * |
2264 | * RT-3 only if doing head-end replication | |
d62a17ae | 2265 | */ |
833b8a50 AK |
2266 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2267 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2268 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2269 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2270 | if (ret) |
2271 | return ret; | |
2272 | } | |
128ea8ab | 2273 | |
d62a17ae | 2274 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2275 | } |
2276 | ||
2277 | /* | |
2278 | * Delete (and withdraw) local routes for specified VNI from the global | |
2279 | * table and per-VNI table. After this, remove all other routes from | |
2280 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2281 | * (advertise-all-vni) being disabled. | |
2282 | */ | |
d62a17ae | 2283 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2284 | { |
d62a17ae | 2285 | int ret; |
2286 | struct prefix_evpn p; | |
128ea8ab | 2287 | |
d62a17ae | 2288 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2289 | * followed by type-3 routes (only one) - for this VNI. | |
2290 | */ | |
2291 | ret = delete_all_type2_routes(bgp, vpn); | |
2292 | if (ret) | |
2293 | return ret; | |
128ea8ab | 2294 | |
d62a17ae | 2295 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2296 | ret = delete_evpn_route(bgp, vpn, &p); | |
2297 | if (ret) | |
2298 | return ret; | |
128ea8ab | 2299 | |
d62a17ae | 2300 | /* Delete all routes from the per-VNI table. */ |
2301 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2302 | } |
2303 | ||
76d07c7a AK |
2304 | /* |
2305 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2306 | * remove the type-3 route if any. A new type-3 route will be generated | |
2307 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2308 | */ | |
2309 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2310 | struct in_addr mcast_grp) | |
2311 | { | |
2312 | struct prefix_evpn p; | |
2313 | ||
2314 | vpn->mcast_grp = mcast_grp; | |
2315 | ||
2316 | if (is_vni_live(vpn)) { | |
2317 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2318 | delete_evpn_route(bgp, vpn, &p); | |
2319 | } | |
2320 | ||
2321 | return 0; | |
2322 | } | |
2323 | ||
128ea8ab | 2324 | /* |
d1911c26 | 2325 | * There is a tunnel endpoint IP address change for this VNI, delete |
2326 | * prior type-3 route (if needed) and update. | |
2327 | * Note: Route re-advertisement happens elsewhere after other processing | |
2328 | * other changes. | |
128ea8ab | 2329 | */ |
d62a17ae | 2330 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2331 | struct in_addr originator_ip) | |
128ea8ab | 2332 | { |
d62a17ae | 2333 | struct prefix_evpn p; |
128ea8ab | 2334 | |
ddd16ed5 MK |
2335 | /* If VNI is not live, we only need to update the originator ip */ |
2336 | if (!is_vni_live(vpn)) { | |
2337 | vpn->originator_ip = originator_ip; | |
2338 | return 0; | |
2339 | } | |
2340 | ||
db0e1937 MK |
2341 | /* Update the tunnel-ip hash */ |
2342 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2343 | bgp_tip_add(bgp, &originator_ip); | |
2344 | ||
2345 | /* filter routes as martian nexthop db has changed */ | |
2346 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2347 | ||
d62a17ae | 2348 | /* Need to withdraw type-3 route as the originator IP is part |
2349 | * of the key. | |
2350 | */ | |
2351 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2352 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2353 | |
d62a17ae | 2354 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2355 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2356 | return 0; |
185fb14a | 2357 | } |
50f74cf1 | 2358 | |
185fb14a AK |
2359 | static struct bgp_path_info * |
2360 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2361 | struct bgp_dest *dest, struct attr *attr) | |
2362 | { | |
2363 | struct attr *attr_new; | |
2364 | struct bgp_path_info *pi; | |
50f74cf1 | 2365 | |
185fb14a AK |
2366 | /* Add (or update) attribute to hash. */ |
2367 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2368 | |
185fb14a AK |
2369 | /* Create new route with its attribute. */ |
2370 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2371 | attr_new, dest); | |
2372 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2373 | bgp_path_info_extra_get(pi); | |
2374 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2375 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2376 | if (parent_pi->extra) { | |
2377 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2378 | sizeof(pi->extra->label)); | |
2379 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2380 | } |
185fb14a | 2381 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2382 | |
185fb14a | 2383 | return pi; |
50f74cf1 | 2384 | } |
2385 | ||
d3135ba3 | 2386 | /* |
2387 | * Install route entry into the VRF routing table and invoke route selection. | |
2388 | */ | |
2389 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2390 | const struct prefix_evpn *evp, |
40381db7 | 2391 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2392 | { |
9bcb3eef | 2393 | struct bgp_dest *dest; |
40381db7 | 2394 | struct bgp_path_info *pi; |
1ec31309 | 2395 | struct attr attr; |
d3135ba3 | 2396 | struct attr *attr_new; |
c4edf708 | 2397 | int ret = 0; |
d3135ba3 | 2398 | struct prefix p; |
2399 | struct prefix *pp = &p; | |
2400 | afi_t afi = 0; | |
2401 | safi_t safi = 0; | |
5f0c5ec8 | 2402 | bool new_pi = false; |
58bff4d1 AK |
2403 | bool use_l3nhg = false; |
2404 | bool is_l3nhg_active = false; | |
d3135ba3 | 2405 | |
2406 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2407 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2408 | |
2dbe669b | 2409 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2410 | zlog_debug( |
2dbe669b DA |
2411 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2412 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2413 | parent_pi->flags); | |
1eb88002 | 2414 | |
d3135ba3 | 2415 | /* Create (or fetch) route within the VRF. */ |
2416 | /* NOTE: There is no RD here. */ | |
3714a385 | 2417 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2418 | afi = AFI_IP; |
2419 | safi = SAFI_UNICAST; | |
9bcb3eef | 2420 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2421 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2422 | afi = AFI_IP6; |
2423 | safi = SAFI_UNICAST; | |
9bcb3eef | 2424 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2425 | } else |
2426 | return 0; | |
2427 | ||
1ec31309 | 2428 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2429 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2430 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2431 | * address for the rest of the code to flow through. In the case of IPv4, | |
2432 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2433 | */ |
6f4f49b2 | 2434 | attr = *parent_pi->attr; |
1ec31309 | 2435 | if (afi == AFI_IP6) |
2436 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2437 | else |
2438 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2439 | |
58bff4d1 AK |
2440 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2441 | &is_l3nhg_active, NULL); | |
2442 | if (use_l3nhg) | |
2443 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2444 | if (is_l3nhg_active) | |
2445 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2446 | ||
d3135ba3 | 2447 | /* Check if route entry is already present. */ |
9bcb3eef | 2448 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2449 | if (pi->extra |
2450 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2451 | break; |
2452 | ||
5f0c5ec8 | 2453 | if (!pi) { |
9bcb3eef | 2454 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2455 | new_pi = true; |
2456 | } else { | |
40381db7 DS |
2457 | if (attrhash_cmp(pi->attr, &attr) |
2458 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2459 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2460 | return 0; |
2461 | } | |
2462 | /* The attribute has changed. */ | |
2463 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2464 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2465 | |
2466 | /* Restore route, if needed. */ | |
40381db7 | 2467 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2468 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2469 | |
2470 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2471 | if ((afi == AFI_IP |
2472 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2473 | || (afi == AFI_IP6 | |
2474 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2475 | &attr_new->mp_nexthop_global))) | |
2476 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2477 | |
9bcb3eef | 2478 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2479 | /* Unintern existing, set to new. */ |
40381db7 DS |
2480 | bgp_attr_unintern(&pi->attr); |
2481 | pi->attr = attr_new; | |
2482 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2483 | } |
d846e917 | 2484 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2485 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2486 | |
090efa2f AK |
2487 | /* Link path to evpn nexthop */ |
2488 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2489 | ||
9bcb3eef | 2490 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2491 | safi); |
b49cdf4c | 2492 | |
d3135ba3 | 2493 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2494 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2495 | |
7452e879 | 2496 | /* Process for route leaking. */ |
2497 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2498 | ||
9bcb3eef | 2499 | bgp_dest_unlock_node(dest); |
3c11d70a | 2500 | |
5f0c5ec8 | 2501 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2502 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2503 | new_pi ? "new" : "update", dest, | |
2504 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2505 | pi->flags); | |
5f0c5ec8 | 2506 | |
d3135ba3 | 2507 | return ret; |
2508 | } | |
2509 | ||
128ea8ab | 2510 | /* |
2511 | * Install route entry into the VNI routing table and invoke route selection. | |
2512 | */ | |
d62a17ae | 2513 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2514 | const struct prefix_evpn *p, |
40381db7 | 2515 | struct bgp_path_info *parent_pi) |
d62a17ae | 2516 | { |
9bcb3eef | 2517 | struct bgp_dest *dest; |
40381db7 | 2518 | struct bgp_path_info *pi; |
9c7edc03 | 2519 | struct bgp_path_info *local_pi; |
d62a17ae | 2520 | struct attr *attr_new; |
2521 | int ret; | |
c44ab6f1 | 2522 | struct prefix_evpn ad_evp; |
74efb822 AK |
2523 | bool old_local_es = false; |
2524 | bool new_local_es; | |
c44ab6f1 AK |
2525 | |
2526 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2527 | * we need to create a different copy for the VNI | |
2528 | */ | |
2529 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2530 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2531 | parent_pi->attr->nexthop); | |
d62a17ae | 2532 | |
2533 | /* Create (or fetch) route within the VNI. */ | |
2534 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2535 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2536 | |
2537 | /* Check if route entry is already present. */ | |
9bcb3eef | 2538 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2539 | if (pi->extra |
2540 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2541 | break; |
2542 | ||
bd0254af MS |
2543 | if (!pi) { |
2544 | /* Create an info */ | |
26c03e43 | 2545 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2546 | parent_pi->attr); |
74efb822 | 2547 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2548 | } else { |
40381db7 DS |
2549 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2550 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2551 | bgp_dest_unlock_node(dest); |
d62a17ae | 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 | 2559 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2560 | bgp_path_info_restore(dest, 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 | |
74efb822 AK |
2566 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2567 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2568 | /* If ESI is different or if its type has changed we | |
2569 | * need to reinstall the path in zebra | |
2570 | */ | |
2571 | if ((old_local_es != new_local_es) | |
2572 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2573 | sizeof(attr_new->esi))) { | |
2574 | ||
2575 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2576 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2577 | vpn->vni, &pi->net->p, | |
2578 | new_local_es ? "local" | |
2579 | : "non-local"); | |
2580 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2581 | } | |
2582 | ||
50f74cf1 | 2583 | /* Unintern existing, set to new. */ |
40381db7 DS |
2584 | bgp_attr_unintern(&pi->attr); |
2585 | pi->attr = attr_new; | |
2586 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2587 | } |
2588 | ||
2589 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2590 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2591 | |
9c7edc03 AK |
2592 | /* if the best path is a local path with a non-zero ES |
2593 | * sync info against the local path may need to be updated | |
2594 | * when a remote path is added/updated (including changes | |
2595 | * from sync-path to remote-path) | |
2596 | */ | |
2597 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2598 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2599 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2600 | __func__); |
9bcb3eef | 2601 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2602 | |
50f74cf1 | 2603 | return ret; |
2604 | } | |
2605 | ||
d3135ba3 | 2606 | /* |
2607 | * Uninstall route entry from the VRF routing table and send message | |
2608 | * to zebra, if appropriate. | |
2609 | */ | |
2610 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2611 | const struct prefix_evpn *evp, |
40381db7 | 2612 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2613 | { |
9bcb3eef | 2614 | struct bgp_dest *dest; |
40381db7 | 2615 | struct bgp_path_info *pi; |
c4edf708 | 2616 | int ret = 0; |
d3135ba3 | 2617 | struct prefix p; |
2618 | struct prefix *pp = &p; | |
2619 | afi_t afi = 0; | |
2620 | safi_t safi = 0; | |
2621 | ||
2622 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2623 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2624 | |
2dbe669b | 2625 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2626 | zlog_debug( |
2dbe669b DA |
2627 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2628 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2629 | parent_pi->flags); | |
1eb88002 | 2630 | |
d3135ba3 | 2631 | /* Locate route within the VRF. */ |
2632 | /* NOTE: There is no RD here. */ | |
3714a385 | 2633 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2634 | afi = AFI_IP; |
2635 | safi = SAFI_UNICAST; | |
9bcb3eef | 2636 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2637 | } else { |
2638 | afi = AFI_IP6; | |
2639 | safi = SAFI_UNICAST; | |
9bcb3eef | 2640 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2641 | } |
2642 | ||
9bcb3eef | 2643 | if (!dest) |
d3135ba3 | 2644 | return 0; |
2645 | ||
2646 | /* Find matching route entry. */ | |
9bcb3eef | 2647 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2648 | if (pi->extra |
2649 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2650 | break; |
2651 | ||
40381db7 | 2652 | if (!pi) |
d3135ba3 | 2653 | return 0; |
2654 | ||
5f0c5ec8 | 2655 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2656 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2657 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2658 | pi->flags); | |
5f0c5ec8 | 2659 | |
7452e879 | 2660 | /* Process for route leaking. */ |
2661 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2662 | ||
9bcb3eef | 2663 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2664 | safi); |
4c7a11d5 | 2665 | |
d3135ba3 | 2666 | /* Mark entry for deletion */ |
9bcb3eef | 2667 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2668 | |
090efa2f AK |
2669 | /* Unlink path to evpn nexthop */ |
2670 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2671 | ||
d3135ba3 | 2672 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2673 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2674 | |
2675 | /* Unlock route node. */ | |
9bcb3eef | 2676 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2677 | |
2678 | return ret; | |
2679 | } | |
2680 | ||
128ea8ab | 2681 | /* |
2682 | * Uninstall route entry from the VNI routing table and send message | |
2683 | * to zebra, if appropriate. | |
2684 | */ | |
d62a17ae | 2685 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2686 | const struct prefix_evpn *p, |
40381db7 | 2687 | struct bgp_path_info *parent_pi) |
128ea8ab | 2688 | { |
9bcb3eef | 2689 | struct bgp_dest *dest; |
40381db7 | 2690 | struct bgp_path_info *pi; |
9c7edc03 | 2691 | struct bgp_path_info *local_pi; |
d62a17ae | 2692 | int ret; |
c44ab6f1 AK |
2693 | struct prefix_evpn ad_evp; |
2694 | ||
2695 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2696 | * we need to create a different copy for the VNI | |
2697 | */ | |
2698 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2699 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2700 | parent_pi->attr->nexthop); | |
128ea8ab | 2701 | |
d62a17ae | 2702 | /* Locate route within the VNI. */ |
2703 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2704 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2705 | if (!dest) | |
d62a17ae | 2706 | return 0; |
128ea8ab | 2707 | |
d62a17ae | 2708 | /* Find matching route entry. */ |
9bcb3eef | 2709 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2710 | if (pi->extra |
2711 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2712 | break; |
128ea8ab | 2713 | |
40381db7 | 2714 | if (!pi) |
d62a17ae | 2715 | return 0; |
128ea8ab | 2716 | |
d62a17ae | 2717 | /* Mark entry for deletion */ |
9bcb3eef | 2718 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2719 | |
d62a17ae | 2720 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2721 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2722 | |
9c7edc03 AK |
2723 | /* if the best path is a local path with a non-zero ES |
2724 | * sync info against the local path may need to be updated | |
2725 | * when a remote path is deleted | |
2726 | */ | |
2727 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2728 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2729 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2730 | __func__); | |
2731 | ||
d62a17ae | 2732 | /* Unlock route node. */ |
9bcb3eef | 2733 | bgp_dest_unlock_node(dest); |
128ea8ab | 2734 | |
d62a17ae | 2735 | return ret; |
128ea8ab | 2736 | } |
2737 | ||
5ba238b7 MK |
2738 | /* |
2739 | * Given a route entry and a VRF, see if this route entry should be | |
2740 | * imported into the VRF i.e., RTs match. | |
2741 | */ | |
4b7e6066 | 2742 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2743 | struct bgp_path_info *pi) |
5ba238b7 | 2744 | { |
40381db7 | 2745 | struct attr *attr = pi->attr; |
5ba238b7 | 2746 | struct ecommunity *ecom; |
f6e07e1b | 2747 | uint32_t i; |
5ba238b7 MK |
2748 | |
2749 | assert(attr); | |
2750 | /* Route should have valid RT to be even considered. */ | |
2751 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2752 | return 0; | |
2753 | ||
2754 | ecom = attr->ecommunity; | |
2755 | if (!ecom || !ecom->size) | |
2756 | return 0; | |
2757 | ||
2758 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2759 | * matches, we're done. | |
2760 | */ | |
2761 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2762 | uint8_t *pnt; |
2763 | uint8_t type, sub_type; | |
5ba238b7 MK |
2764 | struct ecommunity_val *eval; |
2765 | struct ecommunity_val eval_tmp; | |
2766 | struct vrf_irt_node *irt; | |
2767 | ||
2768 | /* Only deal with RTs */ | |
34540b0d | 2769 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2770 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2771 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2772 | type = *pnt++; |
2773 | sub_type = *pnt++; | |
2774 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2775 | continue; | |
2776 | ||
2777 | /* See if this RT matches specified VNIs import RTs */ | |
2778 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2779 | if (irt) |
5ba238b7 MK |
2780 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2781 | return 1; | |
2782 | ||
2783 | /* Also check for non-exact match. In this, we mask out the AS | |
2784 | * and | |
2785 | * only check on the local-admin sub-field. This is to | |
2786 | * facilitate using | |
2787 | * VNI as the RT for EBGP peering too. | |
2788 | */ | |
2789 | irt = NULL; | |
2790 | if (type == ECOMMUNITY_ENCODE_AS | |
2791 | || type == ECOMMUNITY_ENCODE_AS4 | |
2792 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2793 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2794 | mask_ecom_global_admin(&eval_tmp, eval); |
2795 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2796 | } | |
5d9cbca2 | 2797 | if (irt) |
5ba238b7 MK |
2798 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2799 | return 1; | |
2800 | } | |
2801 | ||
2802 | return 0; | |
2803 | } | |
2804 | ||
128ea8ab | 2805 | /* |
2806 | * Given a route entry and a VNI, see if this route entry should be | |
2807 | * imported into the VNI i.e., RTs match. | |
2808 | */ | |
d62a17ae | 2809 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2810 | struct bgp_path_info *pi) |
d62a17ae | 2811 | { |
40381db7 | 2812 | struct attr *attr = pi->attr; |
d62a17ae | 2813 | struct ecommunity *ecom; |
f6e07e1b | 2814 | uint32_t i; |
d62a17ae | 2815 | |
2816 | assert(attr); | |
2817 | /* Route should have valid RT to be even considered. */ | |
2818 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2819 | return 0; | |
2820 | ||
2821 | ecom = attr->ecommunity; | |
2822 | if (!ecom || !ecom->size) | |
2823 | return 0; | |
2824 | ||
2825 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2826 | * matches, we're done. | |
2827 | */ | |
2828 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2829 | uint8_t *pnt; |
2830 | uint8_t type, sub_type; | |
d62a17ae | 2831 | struct ecommunity_val *eval; |
2832 | struct ecommunity_val eval_tmp; | |
2833 | struct irt_node *irt; | |
2834 | ||
2835 | /* Only deal with RTs */ | |
34540b0d | 2836 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2837 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2838 | + (i * ecom->unit_size)); |
d62a17ae | 2839 | type = *pnt++; |
2840 | sub_type = *pnt++; | |
2841 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2842 | continue; | |
2843 | ||
2844 | /* See if this RT matches specified VNIs import RTs */ | |
2845 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2846 | if (irt) |
d62a17ae | 2847 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2848 | return 1; | |
2849 | ||
2850 | /* Also check for non-exact match. In this, we mask out the AS | |
2851 | * and | |
2852 | * only check on the local-admin sub-field. This is to | |
2853 | * facilitate using | |
2854 | * VNI as the RT for EBGP peering too. | |
2855 | */ | |
2856 | irt = NULL; | |
2857 | if (type == ECOMMUNITY_ENCODE_AS | |
2858 | || type == ECOMMUNITY_ENCODE_AS4 | |
2859 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2860 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2861 | mask_ecom_global_admin(&eval_tmp, eval); |
2862 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2863 | } | |
b1ab0dfe | 2864 | if (irt) |
d62a17ae | 2865 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2866 | return 1; | |
2867 | } | |
2868 | ||
2869 | return 0; | |
128ea8ab | 2870 | } |
2871 | ||
47bf0432 CS |
2872 | /* This API will scan evpn routes for checking attribute's rmac |
2873 | * macthes with bgp instance router mac. It avoid installing | |
2874 | * route into bgp vrf table and remote rmac in bridge table. | |
2875 | */ | |
2876 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2877 | const struct prefix_evpn *evp, |
47bf0432 CS |
2878 | struct bgp_path_info *pi) |
2879 | { | |
2880 | /* evpn route could have learnt prior to L3vni has come up, | |
2881 | * perform rmac check before installing route and | |
2882 | * remote router mac. | |
2883 | * The route will be removed from global bgp table once | |
2884 | * SVI comes up with MAC and stored in hash, triggers | |
2885 | * bgp_mac_rescan_all_evpn_tables. | |
2886 | */ | |
05864da7 | 2887 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2888 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2889 | char attr_str[BUFSIZ] = {0}; |
2890 | ||
5022c833 | 2891 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2892 | |
2dbe669b DA |
2893 | zlog_debug( |
2894 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2895 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2896 | } |
2897 | ||
2898 | return 1; | |
2899 | } | |
2900 | ||
2901 | return 0; | |
2902 | } | |
2903 | ||
bbc57c6c AK |
2904 | /* don't import hosts that are locally attached */ |
2905 | static inline bool | |
36dd4574 AK |
2906 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2907 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2908 | struct bgp_path_info *pi, int install) |
2909 | { | |
26c03e43 | 2910 | esi_t *esi; |
bbc57c6c | 2911 | |
26c03e43 AK |
2912 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2913 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2914 | ||
2915 | /* Don't import routes that point to a local destination */ | |
2916 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2917 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2918 | char esi_buf[ESI_STR_LEN]; | |
2919 | ||
2920 | zlog_debug( | |
2921 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2922 | install ? "import" : "unimport", evp, | |
2923 | esi_to_str(esi, esi_buf, | |
2924 | sizeof(esi_buf))); | |
2925 | } | |
2926 | return true; | |
2927 | } | |
58bff4d1 AK |
2928 | } |
2929 | return false; | |
2930 | } | |
26c03e43 | 2931 | |
58bff4d1 AK |
2932 | /* |
2933 | * Install or uninstall a mac-ip route in the provided vrf if | |
2934 | * there is a rt match | |
2935 | */ | |
2936 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
2937 | struct bgp_path_info *pi, | |
2938 | int install) | |
2939 | { | |
2940 | int ret = 0; | |
2941 | const struct prefix_evpn *evp = | |
2942 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
2943 | ||
2944 | /* Consider "valid" remote routes applicable for | |
2945 | * this VRF. | |
2946 | */ | |
2947 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
2948 | && pi->type == ZEBRA_ROUTE_BGP | |
2949 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
2950 | return 0; | |
2951 | ||
58bff4d1 AK |
2952 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
2953 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
2954 | return 0; | |
2955 | ||
74efb822 AK |
2956 | /* don't import hosts that are locally attached */ |
2957 | if (install | |
2958 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
2959 | install)) | |
58bff4d1 | 2960 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 2961 | else |
58bff4d1 AK |
2962 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
2963 | pi); | |
26c03e43 | 2964 | |
58bff4d1 AK |
2965 | if (ret) |
2966 | flog_err(EC_BGP_EVPN_FAIL, | |
2967 | "Failed to %s EVPN %pFX route in VRF %s", | |
2968 | install ? "install" : "uninstall", evp, | |
2969 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 2970 | } |
58bff4d1 AK |
2971 | |
2972 | return ret; | |
bbc57c6c AK |
2973 | } |
2974 | ||
5ba238b7 MK |
2975 | /* |
2976 | * Install or uninstall mac-ip routes are appropriate for this | |
2977 | * particular VRF. | |
2978 | */ | |
996c9314 | 2979 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2980 | { |
2981 | afi_t afi; | |
2982 | safi_t safi; | |
9bcb3eef | 2983 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2984 | struct bgp_table *table; |
40381db7 | 2985 | struct bgp_path_info *pi; |
5ba238b7 | 2986 | int ret; |
5e53dce3 | 2987 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2988 | |
2989 | afi = AFI_L2VPN; | |
2990 | safi = SAFI_EVPN; | |
5e53dce3 T |
2991 | bgp_evpn = bgp_get_evpn(); |
2992 | if (!bgp_evpn) | |
5ba238b7 MK |
2993 | return -1; |
2994 | ||
2995 | /* Walk entire global routing table and evaluate routes which could be | |
2996 | * imported into this VRF. Note that we need to loop through all global | |
2997 | * routes to determine which route matches the import rt on vrf | |
2998 | */ | |
9bcb3eef DS |
2999 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3000 | rd_dest = bgp_route_next(rd_dest)) { | |
3001 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3002 | if (!table) |
3003 | continue; | |
3004 | ||
9bcb3eef DS |
3005 | for (dest = bgp_table_top(table); dest; |
3006 | dest = bgp_route_next(dest)) { | |
3007 | const struct prefix_evpn *evp = | |
3008 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3009 | dest); | |
5ba238b7 | 3010 | |
1eb88002 | 3011 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3012 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3013 | || evp->prefix.route_type | |
3014 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3015 | continue; |
3016 | ||
1eb88002 | 3017 | /* if not a mac+ip route skip this route */ |
3714a385 | 3018 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3019 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3020 | continue; |
3021 | ||
9bcb3eef | 3022 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3023 | pi = pi->next) { |
58bff4d1 AK |
3024 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3025 | bgp_vrf, pi, install); | |
3026 | if (ret) | |
3027 | return ret; | |
5ba238b7 MK |
3028 | } |
3029 | } | |
3030 | } | |
3031 | ||
3032 | return 0; | |
3033 | } | |
3034 | ||
128ea8ab | 3035 | /* |
3036 | * Install or uninstall routes of specified type that are appropriate for this | |
3037 | * particular VNI. | |
3038 | */ | |
d62a17ae | 3039 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3040 | struct bgpevpn *vpn, | |
3041 | bgp_evpn_route_type rtype, | |
3042 | int install) | |
3043 | { | |
0291c246 MK |
3044 | afi_t afi; |
3045 | safi_t safi; | |
9bcb3eef | 3046 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3047 | struct bgp_table *table; |
40381db7 | 3048 | struct bgp_path_info *pi; |
0291c246 | 3049 | int ret; |
d62a17ae | 3050 | |
3051 | afi = AFI_L2VPN; | |
3052 | safi = SAFI_EVPN; | |
3053 | ||
3054 | /* Walk entire global routing table and evaluate routes which could be | |
3055 | * imported into this VPN. Note that we cannot just look at the routes | |
3056 | * for | |
3057 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3058 | * RD. | |
3059 | */ | |
3060 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3061 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3062 | rd_dest = bgp_route_next(rd_dest)) { | |
3063 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3064 | if (!table) |
3065 | continue; | |
3066 | ||
9bcb3eef DS |
3067 | for (dest = bgp_table_top(table); dest; |
3068 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3069 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3070 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3071 | dest); | |
d62a17ae | 3072 | |
3073 | if (evp->prefix.route_type != rtype) | |
3074 | continue; | |
3075 | ||
9bcb3eef | 3076 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3077 | pi = pi->next) { |
d62a17ae | 3078 | /* Consider "valid" remote routes applicable for |
3079 | * this VNI. */ | |
40381db7 DS |
3080 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3081 | && pi->type == ZEBRA_ROUTE_BGP | |
3082 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3083 | continue; |
3084 | ||
40381db7 | 3085 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3086 | if (install) |
3087 | ret = install_evpn_route_entry( | |
40381db7 | 3088 | bgp, vpn, evp, pi); |
d62a17ae | 3089 | else |
3090 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3091 | bgp, vpn, evp, pi); |
d62a17ae | 3092 | |
3093 | if (ret) { | |
af4c2728 | 3094 | flog_err( |
e50f7cfd | 3095 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3096 | "%u: Failed to %s EVPN %s route in VNI %u", |
3097 | bgp->vrf_id, | |
3098 | install ? "install" | |
3099 | : "uninstall", | |
3100 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3101 | ? "MACIP" | |
3102 | : "IMET", | |
3103 | vpn->vni); | |
dc52bece DS |
3104 | |
3105 | bgp_dest_unlock_node(rd_dest); | |
3106 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3107 | return ret; |
3108 | } | |
3109 | } | |
3110 | } | |
3111 | } | |
3112 | } | |
3113 | ||
3114 | return 0; | |
128ea8ab | 3115 | } |
3116 | ||
5ba238b7 | 3117 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3118 | * is invoked upon l3vni-add or l3vni import rt change |
3119 | */ | |
5ba238b7 MK |
3120 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3121 | { | |
3122 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3123 | return 0; | |
3124 | } | |
3125 | ||
128ea8ab | 3126 | /* |
3127 | * Install any existing remote routes applicable for this VNI into its | |
3128 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3129 | * RT is changed. | |
3130 | */ | |
d62a17ae | 3131 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3132 | { |
d62a17ae | 3133 | int ret; |
128ea8ab | 3134 | |
d62a17ae | 3135 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3136 | * for this VNI. | |
3137 | */ | |
3138 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3139 | 1); | |
3140 | if (ret) | |
3141 | return ret; | |
128ea8ab | 3142 | |
c44ab6f1 AK |
3143 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3144 | 1); | |
3145 | if (ret) | |
3146 | return ret; | |
3147 | ||
d62a17ae | 3148 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3149 | 1); | |
128ea8ab | 3150 | } |
3151 | ||
5ba238b7 MK |
3152 | /* uninstall routes from l3vni vrf. */ |
3153 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3154 | { | |
3155 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3156 | return 0; | |
3157 | } | |
3158 | ||
90e60aa7 | 3159 | /* |
3160 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3161 | * this is invoked is upon an import RT change. | |
3162 | */ | |
d62a17ae | 3163 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3164 | { |
d62a17ae | 3165 | int ret; |
90e60aa7 | 3166 | |
d62a17ae | 3167 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3168 | * applicable | |
3169 | * for this VNI. | |
3170 | */ | |
3171 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3172 | 0); | |
3173 | if (ret) | |
3174 | return ret; | |
90e60aa7 | 3175 | |
c44ab6f1 | 3176 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3177 | 0); |
c44ab6f1 AK |
3178 | if (ret) |
3179 | return ret; | |
3180 | ||
3181 | ||
d62a17ae | 3182 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3183 | 0); | |
90e60aa7 | 3184 | } |
3185 | ||
d3135ba3 | 3186 | /* |
3187 | * Install or uninstall route in matching VRFs (list). | |
3188 | */ | |
3189 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3190 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3191 | struct bgp_path_info *pi, |
d3135ba3 | 3192 | struct list *vrfs, int install) |
3193 | { | |
d3135ba3 | 3194 | struct bgp *bgp_vrf; |
3195 | struct listnode *node, *nnode; | |
3196 | ||
90264d64 | 3197 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3198 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3199 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3200 | return 0; |
3201 | ||
90264d64 | 3202 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3203 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3204 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3205 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3206 | return 0; |
3207 | ||
d3135ba3 | 3208 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3209 | int ret; | |
3210 | ||
36dd4574 | 3211 | /* don't import hosts that are locally attached */ |
74efb822 AK |
3212 | if (install |
3213 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
3214 | install)) | |
40381db7 | 3215 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3216 | else |
996c9314 | 3217 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3218 | pi); |
d3135ba3 | 3219 | |
3220 | if (ret) { | |
e50f7cfd | 3221 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3222 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3223 | bgp_def->vrf_id, |
2dbe669b | 3224 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3225 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3226 | return ret; |
3227 | } | |
3228 | } | |
3229 | ||
3230 | return 0; | |
3231 | } | |
3232 | ||
128ea8ab | 3233 | /* |
3234 | * Install or uninstall route in matching VNIs (list). | |
3235 | */ | |
d62a17ae | 3236 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3237 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3238 | struct bgp_path_info *pi, |
d62a17ae | 3239 | struct list *vnis, int install) |
128ea8ab | 3240 | { |
d62a17ae | 3241 | struct bgpevpn *vpn; |
3242 | struct listnode *node, *nnode; | |
128ea8ab | 3243 | |
d62a17ae | 3244 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3245 | int ret; | |
128ea8ab | 3246 | |
d62a17ae | 3247 | if (!is_vni_live(vpn)) |
3248 | continue; | |
128ea8ab | 3249 | |
d62a17ae | 3250 | if (install) |
40381db7 | 3251 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3252 | else |
40381db7 | 3253 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3254 | |
d62a17ae | 3255 | if (ret) { |
1c50c1c0 QY |
3256 | flog_err(EC_BGP_EVPN_FAIL, |
3257 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3258 | bgp->vrf_id, install ? "install" : "uninstall", | |
3259 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3260 | ? "MACIP" | |
3261 | : "IMET", | |
3262 | vpn->vni); | |
d62a17ae | 3263 | return ret; |
3264 | } | |
3265 | } | |
128ea8ab | 3266 | |
d62a17ae | 3267 | return 0; |
128ea8ab | 3268 | } |
3269 | ||
3270 | /* | |
50f74cf1 | 3271 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3272 | */ |
26c03e43 AK |
3273 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3274 | safi_t safi, const struct prefix *p, | |
3275 | struct bgp_path_info *pi, | |
3276 | int import, bool in_vni_rt, | |
3277 | bool in_vrf_rt) | |
d62a17ae | 3278 | { |
3279 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3280 | struct attr *attr = pi->attr; |
d62a17ae | 3281 | struct ecommunity *ecom; |
f6e07e1b | 3282 | uint32_t i; |
c44ab6f1 | 3283 | struct prefix_evpn ad_evp; |
d62a17ae | 3284 | |
3285 | assert(attr); | |
3286 | ||
50f74cf1 | 3287 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3288 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3289 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3290 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3291 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3292 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3293 | return 0; |
3294 | ||
3295 | /* If we don't have Route Target, nothing much to do. */ | |
3296 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3297 | return 0; | |
3298 | ||
c44ab6f1 AK |
3299 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3300 | * we need to create a different copy for the VNI | |
3301 | */ | |
3302 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3303 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3304 | ||
d62a17ae | 3305 | ecom = attr->ecommunity; |
3306 | if (!ecom || !ecom->size) | |
3307 | return -1; | |
3308 | ||
50f74cf1 | 3309 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3310 | * attached to the route */ | |
d62a17ae | 3311 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3312 | uint8_t *pnt; |
3313 | uint8_t type, sub_type; | |
d62a17ae | 3314 | struct ecommunity_val *eval; |
3315 | struct ecommunity_val eval_tmp; | |
996c9314 | 3316 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3317 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3318 | struct bgp_evpn_es *es; |
d62a17ae | 3319 | |
3320 | /* Only deal with RTs */ | |
34540b0d | 3321 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3322 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3323 | + (i * ecom->unit_size)); |
d62a17ae | 3324 | type = *pnt++; |
3325 | sub_type = *pnt++; | |
3326 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3327 | continue; | |
3328 | ||
58bff4d1 AK |
3329 | /* non-local MAC-IP routes in the global route table are linked |
3330 | * to the destination ES | |
3331 | */ | |
3332 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3333 | bgp_evpn_path_es_link(pi, 0, | |
3334 | bgp_evpn_attr_get_esi(pi->attr)); | |
3335 | ||
50f74cf1 | 3336 | /* |
3337 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3338 | * IMET route is imported into VNI table. | |
3339 | * prefix routes are imported into VRF table. | |
523cafc4 | 3340 | */ |
50f74cf1 | 3341 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3342 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3343 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3344 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3345 | |
26c03e43 | 3346 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3347 | if (irt) |
40381db7 DS |
3348 | install_uninstall_route_in_vnis( |
3349 | bgp, afi, safi, evp, pi, irt->vnis, | |
3350 | import); | |
50f74cf1 | 3351 | |
26c03e43 | 3352 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3353 | if (vrf_irt) |
40381db7 DS |
3354 | install_uninstall_route_in_vrfs( |
3355 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3356 | import); | |
50f74cf1 | 3357 | |
3358 | /* Also check for non-exact match. | |
3359 | * In this, we mask out the AS and | |
3360 | * only check on the local-admin sub-field. | |
3361 | * This is to facilitate using | |
3362 | * VNI as the RT for EBGP peering too. | |
3363 | */ | |
3364 | irt = NULL; | |
3365 | vrf_irt = NULL; | |
3366 | if (type == ECOMMUNITY_ENCODE_AS | |
3367 | || type == ECOMMUNITY_ENCODE_AS4 | |
3368 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3369 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3370 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3371 | if (in_vni_rt) |
3372 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3373 | if (in_vrf_rt) | |
3374 | vrf_irt = | |
3375 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3376 | } |
3377 | ||
3378 | if (irt) | |
40381db7 DS |
3379 | install_uninstall_route_in_vnis( |
3380 | bgp, afi, safi, evp, pi, irt->vnis, | |
3381 | import); | |
50f74cf1 | 3382 | if (vrf_irt) |
40381db7 DS |
3383 | install_uninstall_route_in_vrfs( |
3384 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3385 | import); | |
50f74cf1 | 3386 | } |
3387 | ||
3388 | /* es route is imported into the es table */ | |
3389 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3390 | ||
3391 | /* we will match based on the entire esi to avoid | |
3392 | * imoort of an es route for esi2 into esi1 | |
3393 | */ | |
c44ab6f1 | 3394 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3395 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3396 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3397 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3398 | } |
d62a17ae | 3399 | } |
3400 | ||
3401 | return 0; | |
128ea8ab | 3402 | } |
3403 | ||
26c03e43 AK |
3404 | /* |
3405 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3406 | */ | |
3407 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3408 | const struct prefix *p, | |
3409 | struct bgp_path_info *pi, int import) | |
3410 | { | |
3411 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3412 | true, true); | |
3413 | } | |
3414 | ||
74efb822 AK |
3415 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3416 | { | |
3417 | struct bgp *bgp_evpn; | |
3418 | ||
3419 | bgp_evpn = bgp_get_evpn(); | |
3420 | if (!bgp_evpn) | |
3421 | return; | |
3422 | ||
3423 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3424 | &pi->net->p, pi, import); | |
3425 | } | |
3426 | ||
26c03e43 AK |
3427 | /* Import the pi into vrf routing tables */ |
3428 | void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import) | |
3429 | { | |
3430 | struct bgp *bgp_evpn; | |
3431 | ||
3432 | bgp_evpn = bgp_get_evpn(); | |
3433 | if (!bgp_evpn) | |
3434 | return; | |
3435 | ||
3436 | bgp_evpn_install_uninstall_table(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3437 | &pi->net->p, pi, import, false /*vpn*/, | |
3438 | true /*vrf*/); | |
3439 | } | |
3440 | ||
2bb9eff4 DS |
3441 | /* |
3442 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3443 | * routes | |
3444 | */ | |
80b140af MK |
3445 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3446 | { | |
5fd9c12b KA |
3447 | /* Delete ipv4 default route and withdraw from peers */ |
3448 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3449 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3450 | SAFI_UNICAST, false); | |
3451 | ||
80b140af | 3452 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3453 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3454 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3455 | |
5fd9c12b KA |
3456 | /* Delete ipv6 default route and withdraw from peers */ |
3457 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3458 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3459 | SAFI_UNICAST, false); | |
3460 | ||
80b140af | 3461 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3462 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3463 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3464 | } |
3465 | ||
2bb9eff4 DS |
3466 | /* |
3467 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3468 | * routes | |
3469 | */ | |
5394a276 | 3470 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3471 | { |
5394a276 CS |
3472 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3473 | ||
3474 | bgp_evpn = bgp_get_evpn(); | |
3475 | if (!bgp_evpn) | |
3476 | return; | |
3477 | ||
80b140af | 3478 | /* update all ipv4 routes */ |
fdf19f06 MK |
3479 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3480 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3481 | |
5fd9c12b KA |
3482 | /* update ipv4 default route and withdraw from peers */ |
3483 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3484 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3485 | SAFI_UNICAST, true); | |
3486 | ||
80b140af | 3487 | /* update all ipv6 routes */ |
fdf19f06 MK |
3488 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3489 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3490 | |
3491 | /* update ipv6 default route and withdraw from peers */ | |
3492 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3493 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3494 | SAFI_UNICAST, true); | |
3495 | ||
80b140af MK |
3496 | } |
3497 | ||
676f83b9 | 3498 | /* |
3499 | * update and advertise local routes for a VRF as type-5 routes. | |
3500 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3501 | * done in the global route table using the routes which already exist in the | |
3502 | * VRF routing table | |
3503 | */ | |
80b140af | 3504 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3505 | { |
80b140af MK |
3506 | /* skip if the RD is configured */ |
3507 | if (is_vrf_rd_configured(bgp_vrf)) | |
3508 | return; | |
3509 | ||
3510 | /* derive the RD for the VRF based on new router-id */ | |
3511 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3512 | ||
3513 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3514 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3515 | } |
3516 | ||
3517 | /* | |
3518 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3519 | * This is invoked upon VRF RD change. The processing is done only from global | |
3520 | * table. | |
3521 | */ | |
80b140af | 3522 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3523 | { |
80b140af MK |
3524 | /* skip if the RD is configured */ |
3525 | if (is_vrf_rd_configured(bgp_vrf)) | |
3526 | return; | |
3527 | ||
3528 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3529 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3530 | } |
3531 | ||
90e60aa7 | 3532 | /* |
3533 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3534 | * change. Note that the processing is done only on the global route table | |
3535 | * using routes that already exist in the per-VNI table. | |
3536 | */ | |
d62a17ae | 3537 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3538 | { | |
3539 | struct prefix_evpn p; | |
9bcb3eef | 3540 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3541 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3542 | struct attr *attr; |
3543 | afi_t afi = AFI_L2VPN; | |
3544 | safi_t safi = SAFI_EVPN; | |
3545 | ||
3546 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3547 | * attributes to create and advertise the type-3 route for this VNI | |
3548 | * in the global table. | |
fd069644 DS |
3549 | * |
3550 | * RT-3 only if doing head-end replication | |
d62a17ae | 3551 | */ |
833b8a50 AK |
3552 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3553 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3554 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3555 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3556 | if (!dest) /* unexpected */ | |
fd069644 | 3557 | return 0; |
9bcb3eef | 3558 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3559 | if (pi->peer == bgp->peer_self && |
3560 | pi->type == ZEBRA_ROUTE_BGP | |
3561 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3562 | break; | |
3563 | if (!pi) /* unexpected */ | |
3564 | return 0; | |
3565 | attr = pi->attr; | |
d62a17ae | 3566 | |
9c7edc03 AK |
3567 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3568 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3569 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3570 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3571 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3572 | |
fd069644 | 3573 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3574 | bgp_process(bgp, global_dest, afi, safi); |
3575 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3576 | } |
d62a17ae | 3577 | |
3578 | /* Now, walk this VNI's route table and use the route and its attribute | |
3579 | * to create and schedule route in global table. | |
3580 | */ | |
9bcb3eef DS |
3581 | for (dest = bgp_table_top(vpn->route_table); dest; |
3582 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3583 | const struct prefix_evpn *evp = |
9bcb3eef | 3584 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3585 | |
d60f63f0 AD |
3586 | /* |
3587 | * We have already processed type-3 routes. | |
3588 | * Process only type-1 and type-2 routes here. | |
3589 | */ | |
3590 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3591 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3592 | continue; |
3593 | ||
9bcb3eef | 3594 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3595 | if (pi->peer == bgp->peer_self |
3596 | && pi->type == ZEBRA_ROUTE_BGP | |
3597 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3598 | break; |
40381db7 | 3599 | if (!pi) |
d62a17ae | 3600 | continue; |
3601 | ||
3602 | /* Create route in global routing table using this route entry's | |
3603 | * attribute. | |
3604 | */ | |
40381db7 | 3605 | attr = pi->attr; |
c44ab6f1 | 3606 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3607 | evp, &vpn->prd); |
9bcb3eef | 3608 | assert(global_dest); |
d60f63f0 AD |
3609 | |
3610 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3611 | /* Type-2 route */ | |
3612 | update_evpn_route_entry( | |
3613 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3614 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3615 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3616 | } else { |
3617 | /* Type-1 route */ | |
3618 | struct bgp_evpn_es *es; | |
3619 | int route_changed = 0; | |
3620 | ||
3621 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3622 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
3623 | global_dest, attr, 1, | |
3624 | &global_pi, &route_changed); | |
3625 | } | |
d62a17ae | 3626 | |
3627 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3628 | bgp_process(bgp, global_dest, afi, safi); |
3629 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3630 | } |
3631 | ||
3632 | return 0; | |
90e60aa7 | 3633 | } |
3634 | ||
3635 | /* | |
3636 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3637 | * table. Invoked upon router-id change. | |
3638 | */ | |
d62a17ae | 3639 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3640 | { |
d62a17ae | 3641 | int ret; |
3642 | struct prefix_evpn p; | |
9bcb3eef | 3643 | struct bgp_dest *global_dest; |
40381db7 | 3644 | struct bgp_path_info *pi; |
d62a17ae | 3645 | afi_t afi = AFI_L2VPN; |
3646 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3647 | |
d62a17ae | 3648 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3649 | * for this VNI - from the global table. | |
3650 | */ | |
3651 | ret = delete_global_type2_routes(bgp, vpn); | |
3652 | if (ret) | |
3653 | return ret; | |
90e60aa7 | 3654 | |
d62a17ae | 3655 | /* Remove type-3 route for this VNI from global table. */ |
3656 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3657 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3658 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3659 | if (global_dest) { |
d62a17ae | 3660 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3661 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3662 | |
d62a17ae | 3663 | /* Schedule for processing - withdraws to peers happen from |
3664 | * this table. | |
3665 | */ | |
40381db7 | 3666 | if (pi) |
9bcb3eef DS |
3667 | bgp_process(bgp, global_dest, afi, safi); |
3668 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3669 | } |
90e60aa7 | 3670 | |
d60f63f0 AD |
3671 | |
3672 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3673 | return 0; |
90e60aa7 | 3674 | } |
3675 | ||
2d48ee25 | 3676 | /* |
3677 | * Handle router-id change. Update and advertise local routes corresponding | |
3678 | * to this VNI from peers. Note that this is invoked after updating the | |
3679 | * router-id. The routes in the per-VNI table are used to create routes in | |
3680 | * the global table and schedule them. | |
3681 | */ | |
e3b78da8 | 3682 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3683 | { |
e3b78da8 | 3684 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3685 | |
d62a17ae | 3686 | /* Skip VNIs with configured RD. */ |
3687 | if (is_rd_configured(vpn)) | |
3688 | return; | |
2d48ee25 | 3689 | |
d62a17ae | 3690 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3691 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3692 | } |
3693 | ||
3694 | /* | |
3695 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3696 | * to this VNI from peers. Note that this is invoked prior to updating | |
3697 | * the router-id and is done only on the global route table, the routes | |
3698 | * are needed in the per-VNI table to re-advertise with new router id. | |
3699 | */ | |
e3b78da8 | 3700 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3701 | { |
e3b78da8 | 3702 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3703 | |
d62a17ae | 3704 | /* Skip VNIs with configured RD. */ |
3705 | if (is_rd_configured(vpn)) | |
3706 | return; | |
2d48ee25 | 3707 | |
d62a17ae | 3708 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3709 | } |
3710 | ||
fd069644 DS |
3711 | /* |
3712 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3713 | * This is invoked upon flooding mode changing to head-end replication. | |
3714 | */ | |
e3b78da8 | 3715 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3716 | { |
e3b78da8 | 3717 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3718 | struct bgp *bgp = data; |
3719 | struct prefix_evpn p; | |
3720 | ||
833b8a50 AK |
3721 | if (!vpn || !is_vni_live(vpn) || |
3722 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3723 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3724 | return; |
3725 | ||
3726 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3727 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3728 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3729 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3730 | } | |
3731 | ||
3732 | /* | |
3733 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3734 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3735 | */ | |
e3b78da8 | 3736 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3737 | { |
e3b78da8 | 3738 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3739 | struct bgp *bgp = data; |
3740 | struct prefix_evpn p; | |
3741 | ||
3742 | if (!vpn || !is_vni_live(vpn)) | |
3743 | return; | |
3744 | ||
3745 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3746 | delete_evpn_route(bgp, vpn, &p); | |
3747 | } | |
3748 | ||
128ea8ab | 3749 | /* |
3750 | * Process received EVPN type-2 route (advertise or withdraw). | |
3751 | */ | |
d62a17ae | 3752 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3753 | struct attr *attr, uint8_t *pfx, int psize, |
3754 | uint32_t addpath_id) | |
d62a17ae | 3755 | { |
3756 | struct prefix_rd prd; | |
e121d831 QY |
3757 | struct prefix_evpn p = {}; |
3758 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3759 | uint8_t ipaddr_len; |
3760 | uint8_t macaddr_len; | |
e121d831 QY |
3761 | /* holds the VNI(s) as in packet */ |
3762 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3763 | uint32_t num_labels = 0; |
554cd77a | 3764 | uint32_t eth_tag; |
d62a17ae | 3765 | int ret; |
3766 | ||
3767 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3768 | * additional 3 bytes if there is a second label (VNI): | |
3769 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3770 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3771 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3772 | */ | |
3773 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3774 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3775 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3776 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3777 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3778 | return -1; |
3779 | } | |
3780 | ||
e121d831 QY |
3781 | struct stream *pkt = stream_new(psize); |
3782 | stream_put(pkt, pfx, psize); | |
554cd77a | 3783 | |
d62a17ae | 3784 | /* Make prefix_rd */ |
3785 | prd.family = AF_UNSPEC; | |
3786 | prd.prefixlen = 64; | |
e121d831 QY |
3787 | |
3788 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3789 | |
3790 | /* Make EVPN prefix. */ | |
b03b8898 | 3791 | p.family = AF_EVPN; |
50f74cf1 | 3792 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3793 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3794 | ||
554cd77a | 3795 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3796 | if (attr) { |
e121d831 QY |
3797 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3798 | ||
74efb822 | 3799 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3800 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3801 | else | |
3802 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3803 | } else { |
3804 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3805 | } |
d62a17ae | 3806 | |
554cd77a | 3807 | /* Copy Ethernet Tag */ |
e121d831 | 3808 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3809 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3810 | |
3811 | /* Get the MAC Addr len */ | |
e121d831 | 3812 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3813 | |
3814 | /* Get the MAC Addr */ | |
28328ea9 | 3815 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3816 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3817 | } else { |
af4c2728 | 3818 | flog_err( |
e50f7cfd | 3819 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3820 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3821 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3822 | goto fail; |
d62a17ae | 3823 | } |
3824 | ||
3825 | ||
3826 | /* Get the IP. */ | |
e121d831 QY |
3827 | STREAM_GETC(pkt, ipaddr_len); |
3828 | ||
d62a17ae | 3829 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3830 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3831 | flog_err( |
e50f7cfd | 3832 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3833 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3834 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3835 | goto fail; |
d62a17ae | 3836 | } |
3837 | ||
3838 | if (ipaddr_len) { | |
3839 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3840 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3841 | ? IPADDR_V4 |
3842 | : IPADDR_V6; | |
e121d831 | 3843 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3844 | } |
d62a17ae | 3845 | |
b57ba6d2 | 3846 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3847 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3848 | num_labels++; |
e121d831 | 3849 | |
b57ba6d2 | 3850 | /* Do we have a second VNI? */ |
e121d831 | 3851 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3852 | num_labels++; |
e121d831 | 3853 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3854 | } |
d62a17ae | 3855 | |
3856 | /* Process the route. */ | |
3857 | if (attr) | |
3858 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3859 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3860 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3861 | else |
3862 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3863 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3864 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3865 | goto done; |
3866 | ||
3867 | fail: | |
3868 | stream_failure: | |
3869 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3870 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3871 | peer->bgp->vrf_id, peer->host); | |
3872 | ret = -1; | |
3873 | done: | |
3874 | stream_free(pkt); | |
d62a17ae | 3875 | return ret; |
128ea8ab | 3876 | } |
3877 | ||
3878 | /* | |
3879 | * Process received EVPN type-3 route (advertise or withdraw). | |
3880 | */ | |
d62a17ae | 3881 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3882 | struct attr *attr, uint8_t *pfx, int psize, |
3883 | uint32_t addpath_id) | |
d62a17ae | 3884 | { |
3885 | struct prefix_rd prd; | |
3886 | struct prefix_evpn p; | |
d7c0a89a | 3887 | uint8_t ipaddr_len; |
554cd77a | 3888 | uint32_t eth_tag; |
d62a17ae | 3889 | int ret; |
3890 | ||
3891 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3892 | * IP len (1) and IP (4 or 16). | |
3893 | */ | |
3894 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3895 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3896 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3897 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3898 | return -1; |
3899 | } | |
3900 | ||
7fd077aa | 3901 | /* If PMSI is present, log if it is anything other than IR. |
3902 | * Note: We just simply ignore the values as it is not clear if | |
3903 | * doing anything else is better. | |
3904 | */ | |
3905 | if (attr && | |
3906 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3907 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3908 | ||
3909 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3910 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3911 | flog_warn( | |
3912 | EC_BGP_EVPN_PMSI_PRESENT, | |
3913 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3914 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3915 | } |
3916 | } | |
3917 | ||
d62a17ae | 3918 | /* Make prefix_rd */ |
3919 | prd.family = AF_UNSPEC; | |
3920 | prd.prefixlen = 64; | |
3921 | memcpy(&prd.val, pfx, 8); | |
3922 | pfx += 8; | |
3923 | ||
3924 | /* Make EVPN prefix. */ | |
3925 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3926 | p.family = AF_EVPN; |
50f74cf1 | 3927 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3928 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3929 | ||
554cd77a VB |
3930 | /* Copy Ethernet Tag */ |
3931 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3932 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3933 | pfx += 4; |
3934 | ||
3935 | /* Get the IP. */ | |
3936 | ipaddr_len = *pfx++; | |
3937 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3938 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3939 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3940 | } else { |
af4c2728 | 3941 | flog_err( |
e50f7cfd | 3942 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3943 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3944 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3945 | return -1; | |
3946 | } | |
3947 | ||
3948 | /* Process the route. */ | |
3949 | if (attr) | |
3950 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3951 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3952 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3953 | else |
3954 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3955 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3956 | &prd, NULL, 0, NULL); |
d62a17ae | 3957 | return ret; |
128ea8ab | 3958 | } |
3959 | ||
3960 | /* | |
3961 | * Process received EVPN type-5 route (advertise or withdraw). | |
3962 | */ | |
d62a17ae | 3963 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3964 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3965 | uint32_t addpath_id) |
d62a17ae | 3966 | { |
3967 | struct prefix_rd prd; | |
3968 | struct prefix_evpn p; | |
3969 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3970 | uint8_t ippfx_len; |
3971 | uint32_t eth_tag; | |
b57ba6d2 | 3972 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3973 | int ret; |
c6ec0c74 | 3974 | afi_t gw_afi; |
66ff6089 | 3975 | bool is_valid_update = true; |
d62a17ae | 3976 | |
3977 | /* Type-5 route should be 34 or 58 bytes: | |
3978 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3979 | * GW (4 or 16) and VNI (3). | |
3980 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3981 | */ | |
3982 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3983 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3984 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3985 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3986 | return -1; |
3987 | } | |
3988 | ||
3989 | /* Make prefix_rd */ | |
3990 | prd.family = AF_UNSPEC; | |
3991 | prd.prefixlen = 64; | |
3992 | memcpy(&prd.val, pfx, 8); | |
3993 | pfx += 8; | |
3994 | ||
3995 | /* Make EVPN prefix. */ | |
3996 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3997 | p.family = AF_EVPN; |
50f74cf1 | 3998 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3999 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4000 | ||
4001 | /* Additional information outside of prefix - ESI and GW IP */ | |
4002 | memset(&evpn, 0, sizeof(evpn)); | |
4003 | ||
66ff6089 | 4004 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4005 | if (attr) |
66ff6089 | 4006 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4007 | pfx += ESI_BYTES; |
d62a17ae | 4008 | |
4009 | /* Fetch Ethernet Tag. */ | |
4010 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4011 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4012 | pfx += 4; |
4013 | ||
4014 | /* Fetch IP prefix length. */ | |
4015 | ippfx_len = *pfx++; | |
4016 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4017 | flog_err( |
e50f7cfd | 4018 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4019 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4020 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4021 | return -1; | |
4022 | } | |
3714a385 | 4023 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4024 | |
4025 | /* Determine IPv4 or IPv6 prefix */ | |
4026 | /* Since the address and GW are from the same family, this just becomes | |
4027 | * a simple check on the total size. | |
4028 | */ | |
4029 | if (psize == 34) { | |
3714a385 | 4030 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4031 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4032 | pfx += 4; |
4033 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4034 | pfx += 4; | |
c6ec0c74 | 4035 | gw_afi = AF_INET; |
d62a17ae | 4036 | } else { |
3714a385 | 4037 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4038 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4039 | pfx += 16; |
4040 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4041 | pfx += 16; | |
c6ec0c74 | 4042 | gw_afi = AF_INET6; |
d62a17ae | 4043 | } |
4044 | ||
b57ba6d2 MK |
4045 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4046 | memset(&label, 0, sizeof(label)); | |
4047 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4048 | |
4049 | /* | |
4050 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4051 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4052 | * field | |
6b11bd8d | 4053 | */ |
d62a17ae | 4054 | |
66ff6089 AD |
4055 | /* |
4056 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4057 | * at the same time is should be treated as withdraw | |
4058 | */ | |
4059 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4060 | && !is_zero_gw_ip(&evpn.gw_ip, gw_afi)) { | |
4061 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4062 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4063 | peer->host); | |
4064 | is_valid_update = false; | |
4065 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4066 | evpn.type = OVERLAY_INDEX_ESI; | |
4067 | else if (!is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4068 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; | |
c6ec0c74 | 4069 | if (attr) { |
66ff6089 AD |
4070 | if (is_zero_mac(&attr->rmac) |
4071 | && !bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4072 | && is_zero_gw_ip(&evpn.gw_ip, gw_afi) && label == 0) { | |
4073 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4074 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4075 | peer->host); | |
c6ec0c74 | 4076 | is_valid_update = false; |
66ff6089 | 4077 | } |
c6ec0c74 KA |
4078 | |
4079 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4080 | is_valid_update = false; | |
4081 | } | |
4082 | ||
d62a17ae | 4083 | /* Process the route. */ |
66ff6089 | 4084 | if (attr && is_valid_update) |
d62a17ae | 4085 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4086 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4087 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4088 | else { |
4089 | if (!is_valid_update) { | |
4090 | char attr_str[BUFSIZ] = {0}; | |
4091 | ||
4092 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4093 | zlog_warn( | |
4094 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4095 | peer->hostname, peer->bgp->vrf_id, &p, | |
4096 | attr_str); | |
4097 | } | |
d62a17ae | 4098 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4099 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4100 | &prd, &label, 1, &evpn); |
66ff6089 | 4101 | } |
d62a17ae | 4102 | |
4103 | return ret; | |
4104 | } | |
4105 | ||
5f040085 DS |
4106 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4107 | const struct prefix_rd *prd, | |
4108 | mpls_label_t *label, uint32_t num_labels, | |
4109 | struct attr *attr) | |
d62a17ae | 4110 | { |
4111 | int len; | |
4112 | char temp[16]; | |
5f040085 | 4113 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4114 | |
4115 | memset(&temp, 0, 16); | |
b03b8898 | 4116 | if (p->family != AF_EVPN) |
d62a17ae | 4117 | return; |
4118 | p_evpn_p = &(p->u.prefix_evpn); | |
4119 | ||
e9fc2840 | 4120 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4121 | IP and GW-IP have to be both ipv4 or ipv6 |
4122 | */ | |
3714a385 | 4123 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4124 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4125 | else |
e9fc2840 | 4126 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4127 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4128 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4129 | stream_put(s, prd->val, 8); | |
6c995628 | 4130 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4131 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4132 | else |
c44ab6f1 | 4133 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4134 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4135 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4136 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4137 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4138 | else |
3714a385 | 4139 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4140 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4141 | const struct bgp_route_evpn *evpn_overlay = |
4142 | bgp_attr_get_evpn_overlay(attr); | |
4143 | ||
3714a385 | 4144 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
6c924775 | 4145 | stream_put_ipv4(s, evpn_overlay->gw_ip.ipv4.s_addr); |
d62a17ae | 4146 | else |
6c924775 | 4147 | stream_put(s, &(evpn_overlay->gw_ip.ipv6), 16); |
d62a17ae | 4148 | } else { |
3714a385 | 4149 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4150 | stream_put_ipv4(s, 0); |
4151 | else | |
4152 | stream_put(s, &temp, 16); | |
4153 | } | |
4154 | ||
b57ba6d2 | 4155 | if (num_labels) |
d62a17ae | 4156 | stream_put(s, label, 3); |
4157 | else | |
4158 | stream_put3(s, 0); | |
128ea8ab | 4159 | } |
4160 | ||
4161 | /* | |
4162 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4163 | */ | |
e3b78da8 | 4164 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4165 | { |
e3b78da8 | 4166 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4167 | |
d62a17ae | 4168 | /* Remove EVPN routes and schedule for processing. */ |
4169 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4170 | |
d62a17ae | 4171 | /* Clear "live" flag and see if hash needs to be freed. */ |
4172 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4173 | if (!is_vni_configured(vpn)) | |
4174 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4175 | } |
4176 | ||
4177 | /* | |
4178 | * Free a VNI entry; iterator function called during cleanup. | |
4179 | */ | |
e3b78da8 | 4180 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4181 | { |
e3b78da8 | 4182 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4183 | |
d62a17ae | 4184 | delete_all_vni_routes(bgp, vpn); |
4185 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4186 | } |
4187 | ||
c581d8b0 MK |
4188 | /* |
4189 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4190 | */ | |
4191 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4192 | { | |
5e53dce3 | 4193 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4194 | |
c581d8b0 | 4195 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4196 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4197 | ||
4198 | /* Map RT to VRF */ | |
5e53dce3 T |
4199 | bgp_evpn = bgp_get_evpn(); |
4200 | if (!bgp_evpn) | |
10ebe1ab MK |
4201 | return; |
4202 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4203 | } |
4204 | ||
4205 | /* | |
4206 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4207 | */ | |
4208 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4209 | { | |
4210 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4211 | } | |
4212 | ||
4213 | /* | |
4214 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4215 | */ | |
4216 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4217 | { | |
4218 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4219 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4220 | } | |
4221 | ||
4222 | /* | |
4223 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4224 | */ | |
4225 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4226 | { | |
4227 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4228 | } | |
128ea8ab | 4229 | |
f1f8b53c MK |
4230 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4231 | { | |
5e53dce3 | 4232 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4233 | struct listnode *node = NULL; |
4234 | struct bgpevpn *vpn = NULL; | |
4235 | ||
5e53dce3 T |
4236 | bgp_evpn = bgp_get_evpn(); |
4237 | if (!bgp_evpn) | |
f1f8b53c MK |
4238 | return; |
4239 | ||
4992b4ae MK |
4240 | /* update all type-5 routes */ |
4241 | update_advertise_vrf_routes(bgp_vrf); | |
4242 | ||
4243 | /* update all type-2 routes */ | |
f1f8b53c | 4244 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4245 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4246 | } |
4247 | ||
bf1061d8 VB |
4248 | /* |
4249 | * Handle autort change for a given VNI. | |
4250 | */ | |
e3b78da8 | 4251 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4252 | { |
e3b78da8 | 4253 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4254 | |
bf1061d8 VB |
4255 | if (!is_import_rt_configured(vpn)) { |
4256 | if (is_vni_live(vpn)) | |
4257 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4258 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4259 | list_delete_all_node(vpn->import_rtl); |
4260 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4261 | if (is_vni_live(vpn)) | |
4262 | bgp_evpn_install_routes(bgp, vpn); | |
4263 | } | |
4264 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4265 | list_delete_all_node(vpn->export_rtl); |
4266 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4267 | if (is_vni_live(vpn)) | |
4268 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4269 | } | |
4270 | } | |
4271 | ||
128ea8ab | 4272 | /* |
4273 | * Public functions. | |
4274 | */ | |
4275 | ||
5424b7ba | 4276 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4277 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4278 | afi_t afi, safi_t safi) |
4279 | { | |
4280 | int ret = 0; | |
4281 | struct prefix_evpn evp; | |
5424b7ba | 4282 | |
31310b25 | 4283 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4284 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4285 | if (ret) |
af4c2728 | 4286 | flog_err( |
e50f7cfd | 4287 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4288 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4289 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4290 | } |
4291 | ||
342dd0c6 | 4292 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4293 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4294 | { |
4295 | struct bgp_table *table = NULL; | |
9bcb3eef | 4296 | struct bgp_dest *dest = NULL; |
40381db7 | 4297 | struct bgp_path_info *pi; |
342dd0c6 | 4298 | |
053905d2 | 4299 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4300 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4301 | /* Only care about "selected" routes. Also ensure that |
4302 | * these are routes that are injectable into EVPN. | |
4303 | */ | |
25f2ca53 | 4304 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4305 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4306 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4307 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4308 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4309 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4310 | safi); |
25f2ca53 | 4311 | break; |
4312 | } | |
4313 | } | |
4314 | } | |
5424b7ba | 4315 | } |
342dd0c6 | 4316 | |
5fd9c12b KA |
4317 | /* |
4318 | * evpn - enable advertisement of default g/w | |
4319 | */ | |
4320 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4321 | safi_t safi, bool add) | |
4322 | { | |
4323 | struct prefix ip_prefix; | |
4324 | ||
4325 | /* form the default prefix 0.0.0.0/0 */ | |
4326 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4327 | ip_prefix.family = afi2family(afi); | |
4328 | ||
4329 | if (add) { | |
4330 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4331 | NULL, afi, safi); | |
4332 | } else { | |
4333 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4334 | afi, safi); | |
4335 | } | |
4336 | } | |
4337 | ||
4338 | ||
2f69f6d3 | 4339 | /* |
4340 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4341 | * to this function correspond to those of the source IP prefix (best | |
4342 | * path in the case of the attr. In the case of a local prefix (when we | |
4343 | * are advertising local subnets), the src_attr will be NULL. | |
4344 | */ | |
bd494ec5 | 4345 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4346 | struct attr *src_attr, afi_t afi, |
4347 | safi_t safi) | |
5424b7ba MK |
4348 | { |
4349 | int ret = 0; | |
4350 | struct prefix_evpn evp; | |
7c82b312 | 4351 | |
31310b25 | 4352 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4353 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4354 | if (ret) |
e50f7cfd | 4355 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4356 | "%u: Failed to create type-5 route for prefix %pFX", |
4357 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4358 | } |
4359 | ||
2f69f6d3 | 4360 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4361 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4362 | * advertisement is enabled. | |
4363 | */ | |
996c9314 LB |
4364 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4365 | safi_t safi) | |
342dd0c6 | 4366 | { |
4367 | struct bgp_table *table = NULL; | |
9bcb3eef | 4368 | struct bgp_dest *dest = NULL; |
40381db7 | 4369 | struct bgp_path_info *pi; |
342dd0c6 | 4370 | |
053905d2 | 4371 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4372 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4373 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4374 | * attribute. Also, ensure that the route is injectable |
4375 | * into EVPN. | |
2f69f6d3 | 4376 | * TODO: Support for AddPath for EVPN. |
4377 | */ | |
9bcb3eef | 4378 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4379 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4380 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4381 | |
4382 | /* apply the route-map */ | |
4383 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4384 | route_map_result_t ret; |
e34291b8 | 4385 | struct bgp_path_info tmp_pi; |
4386 | struct bgp_path_info_extra tmp_pie; | |
4387 | struct attr tmp_attr; | |
4388 | ||
4389 | tmp_attr = *pi->attr; | |
4390 | ||
4391 | /* Fill temp path_info */ | |
9bcb3eef DS |
4392 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4393 | dest, pi, pi->peer, | |
4394 | &tmp_attr); | |
e34291b8 | 4395 | |
4396 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4397 | |
996c9314 LB |
4398 | ret = route_map_apply( |
4399 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4400 | .map, | |
9bcb3eef | 4401 | bgp_dest_get_prefix(dest), |
1782514f | 4402 | &tmp_pi); |
e34291b8 | 4403 | if (ret == RMAP_DENYMATCH) { |
4404 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4405 | continue; |
e34291b8 | 4406 | } |
4407 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4408 | bgp_vrf, |
9bcb3eef | 4409 | bgp_dest_get_prefix(dest), |
b54892e0 | 4410 | &tmp_attr, afi, safi); |
e34291b8 | 4411 | } else |
4412 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4413 | bgp_vrf, |
9bcb3eef | 4414 | bgp_dest_get_prefix(dest), |
b54892e0 | 4415 | pi->attr, afi, safi); |
2f69f6d3 | 4416 | break; |
4417 | } | |
4418 | } | |
31310b25 | 4419 | } |
342dd0c6 | 4420 | } |
4421 | ||
996c9314 | 4422 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4423 | { |
4424 | struct listnode *node, *nnode, *node_to_del; | |
4425 | struct ecommunity *ecom, *ecom_auto; | |
4426 | struct ecommunity_val eval; | |
4427 | ||
bf1061d8 VB |
4428 | if (bgp->advertise_autort_rfc8365) |
4429 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4430 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4431 | ||
4432 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4433 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4434 | node_to_del = NULL; |
4435 | ||
4436 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4437 | if (ecommunity_match(ecom, ecom_auto)) { | |
4438 | ecommunity_free(&ecom); | |
4439 | node_to_del = node; | |
4440 | } | |
4441 | } | |
4442 | ||
4443 | if (node_to_del) | |
4444 | list_delete_node(rtl, node_to_del); | |
4445 | ||
4446 | ecommunity_free(&ecom_auto); | |
4447 | } | |
4448 | ||
4449 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4450 | struct ecommunity *ecomadd) |
c581d8b0 | 4451 | { |
5ba238b7 | 4452 | /* uninstall routes from vrf */ |
3d0b43d7 | 4453 | if (is_l3vni_live(bgp_vrf)) |
4454 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4455 | |
4456 | /* Cleanup the RT to VRF mapping */ | |
4457 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4458 | ||
c581d8b0 MK |
4459 | /* Remove auto generated RT */ |
4460 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4461 | ||
4462 | /* Add the newly configured RT to RT list */ | |
4463 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4464 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4465 | ||
3d0b43d7 | 4466 | /* map VRF to its RTs and install routes matching the new RTs */ |
4467 | if (is_l3vni_live(bgp_vrf)) { | |
4468 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4469 | install_routes_for_vrf(bgp_vrf); | |
4470 | } | |
c581d8b0 MK |
4471 | } |
4472 | ||
4473 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4474 | struct ecommunity *ecomdel) | |
4475 | { | |
4476 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4477 | struct ecommunity *ecom = NULL; | |
4478 | ||
5ba238b7 | 4479 | /* uninstall routes from vrf */ |
3d0b43d7 | 4480 | if (is_l3vni_live(bgp_vrf)) |
4481 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4482 | |
4483 | /* Cleanup the RT to VRF mapping */ | |
4484 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4485 | ||
c581d8b0 MK |
4486 | /* remove the RT from the RT list */ |
4487 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4488 | if (ecommunity_match(ecom, ecomdel)) { | |
4489 | ecommunity_free(&ecom); | |
4490 | node_to_del = node; | |
4491 | break; | |
4492 | } | |
4493 | } | |
4494 | ||
4495 | if (node_to_del) | |
4496 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4497 | ||
b3a4db3d | 4498 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4499 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4500 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4501 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4502 | if (is_l3vni_live(bgp_vrf)) |
4503 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4504 | } |
4505 | ||
3d0b43d7 | 4506 | /* map VRFs to its RTs and install routes matching this new RT */ |
4507 | if (is_l3vni_live(bgp_vrf)) { | |
4508 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4509 | install_routes_for_vrf(bgp_vrf); | |
4510 | } | |
c581d8b0 MK |
4511 | } |
4512 | ||
4513 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4514 | struct ecommunity *ecomadd) | |
4515 | { | |
4516 | /* remove auto-generated RT */ | |
4517 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4518 | ||
4519 | /* Add the new RT to the RT list */ | |
4520 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4521 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4522 | ||
ebdc9e64 AD |
4523 | if (is_l3vni_live(bgp_vrf)) |
4524 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4525 | } |
4526 | ||
4527 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4528 | struct ecommunity *ecomdel) | |
4529 | { | |
4530 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4531 | struct ecommunity *ecom = NULL; | |
4532 | ||
4533 | /* Remove the RT from the RT list */ | |
4534 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4535 | if (ecommunity_match(ecom, ecomdel)) { | |
4536 | ecommunity_free(&ecom); | |
4537 | node_to_del = node; | |
4538 | break; | |
4539 | } | |
4540 | } | |
4541 | ||
4542 | if (node_to_del) | |
4543 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4544 | ||
1525e99f DS |
4545 | /* |
4546 | * Temporary assert to make SA happy. | |
4547 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4548 | * which means that SA is going to complain about | |
4549 | * the list_isempty call, which doesn't NULL check. | |
4550 | * So until we get this situation cleaned up, here | |
4551 | * we are. | |
4552 | */ | |
4553 | assert(bgp_vrf->vrf_export_rtl); | |
4554 | ||
c581d8b0 | 4555 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4556 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4557 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4558 | if (is_l3vni_live(bgp_vrf)) |
4559 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4560 | } |
4561 | ||
ebdc9e64 AD |
4562 | if (is_l3vni_live(bgp_vrf)) |
4563 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4564 | } |
4565 | ||
2d48ee25 | 4566 | /* |
4567 | * Handle change to BGP router id. This is invoked twice by the change | |
4568 | * handler, first before the router id has been changed and then after | |
4569 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4570 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4571 | * will result in the routes being re-advertised. |
4572 | */ | |
d62a17ae | 4573 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4574 | { |
5394a276 CS |
4575 | struct listnode *node; |
4576 | struct bgp *bgp_vrf; | |
4577 | ||
676f83b9 | 4578 | if (withdraw) { |
4579 | ||
4580 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4581 | stored in the global table for this vrf |
4582 | */ | |
80b140af | 4583 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4584 | |
4585 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4586 | * L2-VNIs |
4587 | */ | |
d62a17ae | 4588 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4589 | (void (*)(struct hash_bucket *, |
d62a17ae | 4590 | void *))withdraw_router_id_vni, |
4591 | bgp); | |
5394a276 CS |
4592 | |
4593 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4594 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4595 | if (bgp_vrf->evpn_info->advertise_pip && | |
4596 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4597 | == INADDR_ANY)) | |
4598 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4599 | = INADDR_ANY; | |
4600 | } | |
4601 | } | |
676f83b9 | 4602 | } else { |
4603 | ||
5394a276 CS |
4604 | /* Assign new default instance router-id */ |
4605 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4606 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4607 | if (bgp_vrf->evpn_info->advertise_pip && | |
4608 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4609 | == INADDR_ANY)) { | |
4610 | bgp_vrf->evpn_info->pip_ip = | |
4611 | bgp->router_id; | |
4612 | /* advertise type-5 routes with | |
4613 | * new nexthop | |
4614 | */ | |
4615 | update_advertise_vrf_routes(bgp_vrf); | |
4616 | } | |
4617 | } | |
4618 | } | |
4619 | ||
676f83b9 | 4620 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4621 | * RD |
4622 | */ | |
80b140af | 4623 | update_router_id_vrf(bgp); |
676f83b9 | 4624 | |
4625 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4626 | * new RD |
4627 | */ | |
d62a17ae | 4628 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4629 | (void (*)(struct hash_bucket *, |
d62a17ae | 4630 | void *))update_router_id_vni, |
4631 | bgp); | |
676f83b9 | 4632 | } |
2d48ee25 | 4633 | } |
4634 | ||
bf1061d8 VB |
4635 | /* |
4636 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4637 | */ | |
4638 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4639 | { | |
4640 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4641 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4642 | void*))update_autort_vni, |
4643 | bgp); | |
4644 | } | |
4645 | ||
90e60aa7 | 4646 | /* |
4647 | * Handle change to export RT - update and advertise local routes. | |
4648 | */ | |
d62a17ae | 4649 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4650 | { |
d62a17ae | 4651 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4652 | } |
4653 | ||
996c9314 | 4654 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4655 | { |
4656 | if (withdraw) | |
4657 | delete_withdraw_vrf_routes(bgp_vrf); | |
4658 | else | |
4659 | update_advertise_vrf_routes(bgp_vrf); | |
4660 | } | |
4661 | ||
90e60aa7 | 4662 | /* |
4663 | * Handle change to RD. This is invoked twice by the change handler, | |
4664 | * first before the RD has been changed and then after the RD has | |
4665 | * been changed. The first invocation will result in local routes | |
4666 | * of this VNI being deleted and withdrawn and the next will result | |
4667 | * in the routes being re-advertised. | |
4668 | */ | |
d62a17ae | 4669 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4670 | int withdraw) | |
90e60aa7 | 4671 | { |
d62a17ae | 4672 | if (withdraw) |
4673 | delete_withdraw_vni_routes(bgp, vpn); | |
4674 | else | |
4675 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4676 | } |
4677 | ||
4678 | /* | |
4679 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4680 | */ | |
d62a17ae | 4681 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4682 | { |
d62a17ae | 4683 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4684 | } |
4685 | ||
4686 | /* | |
4687 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4688 | * to Import RT. | |
4689 | */ | |
d62a17ae | 4690 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4691 | { |
d62a17ae | 4692 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4693 | } |
4694 | ||
b16031a2 | 4695 | /* |
b57ba6d2 | 4696 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4697 | */ |
d7c0a89a | 4698 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4699 | int len) |
b16031a2 | 4700 | { |
b57ba6d2 | 4701 | vni_t vni1, vni2; |
b16031a2 | 4702 | |
b57ba6d2 MK |
4703 | vni1 = label2vni(label); |
4704 | if (num_labels == 2) { | |
996c9314 | 4705 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4706 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4707 | } else | |
4708 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4709 | return buf; |
b16031a2 | 4710 | } |
4711 | ||
9c92b5f7 MK |
4712 | /* |
4713 | * Function to convert evpn route to json format. | |
4714 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4715 | */ | |
bd494ec5 | 4716 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4717 | { |
b682f6de | 4718 | char buf1[ETHER_ADDR_STRLEN]; |
4719 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4720 | uint8_t family; |
4721 | uint8_t prefixlen; | |
9c92b5f7 | 4722 | |
b682f6de | 4723 | if (!json) |
4724 | return; | |
9c92b5f7 | 4725 | |
44c69747 LK |
4726 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4727 | ||
4728 | switch (p->prefix.route_type) { | |
4729 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4730 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4731 | p->prefix.macip_addr.eth_tag); |
4732 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4733 | json_object_string_add(json, "mac", | |
4734 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4735 | sizeof(buf1))); | |
4736 | ||
4737 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4738 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4739 | AF_INET6; | |
4740 | prefixlen = (family == AF_INET) ? | |
4741 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4742 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4743 | buf2, PREFIX2STR_BUFFER); | |
4744 | json_object_int_add(json, "ipLen", prefixlen); | |
4745 | json_object_string_add(json, "ip", buf2); | |
4746 | } | |
4747 | break; | |
dff8f48d | 4748 | |
44c69747 LK |
4749 | case BGP_EVPN_IMET_ROUTE: |
4750 | json_object_int_add(json, "ethTag", | |
4751 | p->prefix.imet_addr.eth_tag); | |
4752 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4753 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4754 | IPV6_MAX_BITLEN; | |
4755 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4756 | PREFIX2STR_BUFFER); | |
4757 | json_object_int_add(json, "ipLen", prefixlen); | |
4758 | json_object_string_add(json, "ip", buf2); | |
4759 | break; | |
dff8f48d | 4760 | |
44c69747 LK |
4761 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4762 | json_object_int_add(json, "ethTag", | |
4763 | p->prefix.prefix_addr.eth_tag); | |
4764 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4765 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4766 | buf2, sizeof(buf2)); | |
4767 | json_object_int_add(json, "ipLen", | |
4768 | p->prefix.prefix_addr.ip_prefix_length); | |
4769 | json_object_string_add(json, "ip", buf2); | |
4770 | break; | |
4771 | ||
4772 | default: | |
4773 | break; | |
dff8f48d | 4774 | } |
9c92b5f7 MK |
4775 | } |
4776 | ||
128ea8ab | 4777 | /* |
4778 | * Encode EVPN prefix in Update (MP_REACH) | |
4779 | */ | |
5f040085 DS |
4780 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4781 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4782 | uint32_t num_labels, struct attr *attr, |
4783 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4784 | { |
4785 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4786 | int len, ipa_len = 0; |
d62a17ae | 4787 | |
4788 | if (addpath_encode) | |
4789 | stream_putl(s, addpath_tx_id); | |
4790 | ||
4791 | /* Route type */ | |
4792 | stream_putc(s, evp->prefix.route_type); | |
4793 | ||
4794 | switch (evp->prefix.route_type) { | |
4795 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4796 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4797 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4798 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4799 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4800 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4801 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4802 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4803 | len += 3; | |
4804 | stream_putc(s, len); | |
996c9314 | 4805 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4806 | if (attr) |
c44ab6f1 | 4807 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4808 | else |
4809 | stream_put(s, 0, 10); | |
3714a385 | 4810 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4811 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4812 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4813 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4814 | if (ipa_len) /* IP */ | |
4815 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4816 | ipa_len); | |
b57ba6d2 MK |
4817 | /* 1st label is the L2 VNI */ |
4818 | stream_put(s, label, BGP_LABEL_BYTES); | |
4819 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4820 | if (ipa_len && num_labels > 1) | |
996c9314 | 4821 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4822 | break; |
4823 | ||
4824 | case BGP_EVPN_IMET_ROUTE: | |
4825 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4826 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4827 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4828 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4829 | /* Originating Router's IP Addr */ | |
3714a385 | 4830 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4831 | break; |
4832 | ||
50f74cf1 | 4833 | case BGP_EVPN_ES_ROUTE: |
4834 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4835 | stream_put(s, prd->val, 8); /* RD */ | |
4836 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4837 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4838 | /* VTEP IP */ |
4839 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4840 | break; |
4841 | ||
c44ab6f1 AK |
4842 | case BGP_EVPN_AD_ROUTE: |
4843 | /* RD, ESI, EthTag, 1 VNI */ | |
4844 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4845 | stream_putc(s, len); | |
4846 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4847 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4848 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4849 | stream_put(s, label, BGP_LABEL_BYTES); | |
4850 | break; | |
4851 | ||
d62a17ae | 4852 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4853 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4854 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4855 | break; |
4856 | ||
4857 | default: | |
4858 | break; | |
4859 | } | |
4860 | } | |
4861 | ||
4862 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4863 | struct bgp_nlri *packet, int withdraw) | |
4864 | { | |
d7c0a89a QY |
4865 | uint8_t *pnt; |
4866 | uint8_t *lim; | |
d62a17ae | 4867 | afi_t afi; |
4868 | safi_t safi; | |
d7c0a89a | 4869 | uint32_t addpath_id; |
d62a17ae | 4870 | int addpath_encoded; |
4871 | int psize = 0; | |
d7c0a89a | 4872 | uint8_t rtype; |
d62a17ae | 4873 | struct prefix p; |
4874 | ||
d62a17ae | 4875 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4876 | pnt = packet->nlri; | |
4877 | lim = pnt + packet->length; | |
4878 | afi = packet->afi; | |
4879 | safi = packet->safi; | |
4880 | addpath_id = 0; | |
4881 | ||
4882 | addpath_encoded = | |
4883 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4884 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4885 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4886 | ||
4887 | for (; pnt < lim; pnt += psize) { | |
4888 | /* Clear prefix structure. */ | |
4889 | memset(&p, 0, sizeof(struct prefix)); | |
4890 | ||
4891 | /* Deal with path-id if AddPath is supported. */ | |
4892 | if (addpath_encoded) { | |
4893 | /* When packet overflow occurs return immediately. */ | |
4894 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4895 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4896 | |
a3a850a1 S |
4897 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4898 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4899 | pnt += BGP_ADDPATH_ID_LEN; |
4900 | } | |
4901 | ||
4902 | /* All EVPN NLRI types start with type and length. */ | |
4903 | if (pnt + 2 > lim) | |
513386b5 | 4904 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4905 | |
4906 | rtype = *pnt++; | |
3f54c705 | 4907 | psize = *pnt++; |
d62a17ae | 4908 | |
4909 | /* When packet overflow occur return immediately. */ | |
4910 | if (pnt + psize > lim) | |
513386b5 | 4911 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4912 | |
4913 | switch (rtype) { | |
4914 | case BGP_EVPN_MAC_IP_ROUTE: | |
4915 | if (process_type2_route(peer, afi, safi, | |
4916 | withdraw ? NULL : attr, pnt, | |
4917 | psize, addpath_id)) { | |
af4c2728 | 4918 | flog_err( |
e50f7cfd | 4919 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4920 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4921 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4922 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4923 | } |
4924 | break; | |
4925 | ||
4926 | case BGP_EVPN_IMET_ROUTE: | |
4927 | if (process_type3_route(peer, afi, safi, | |
4928 | withdraw ? NULL : attr, pnt, | |
4929 | psize, addpath_id)) { | |
af4c2728 | 4930 | flog_err( |
e50f7cfd | 4931 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4932 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4933 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4934 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4935 | } |
4936 | break; | |
4937 | ||
50f74cf1 | 4938 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4939 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4940 | withdraw ? NULL : attr, pnt, |
4941 | psize, addpath_id)) { | |
af4c2728 | 4942 | flog_err( |
e50f7cfd | 4943 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4944 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4945 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4946 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4947 | } |
4948 | break; | |
4949 | ||
c44ab6f1 AK |
4950 | case BGP_EVPN_AD_ROUTE: |
4951 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4952 | withdraw ? NULL : attr, pnt, | |
4953 | psize, addpath_id)) { | |
4954 | flog_err( | |
4955 | EC_BGP_PKT_PROCESS, | |
4956 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4957 | peer->bgp->vrf_id, peer->host, psize); | |
4958 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4959 | } | |
4960 | break; | |
4961 | ||
d62a17ae | 4962 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4963 | if (process_type5_route(peer, afi, safi, |
4964 | withdraw ? NULL : attr, pnt, | |
4965 | psize, addpath_id)) { | |
af4c2728 | 4966 | flog_err( |
e50f7cfd | 4967 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4968 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4969 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4970 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4971 | } |
4972 | break; | |
4973 | ||
4974 | default: | |
4975 | break; | |
4976 | } | |
4977 | } | |
4978 | ||
4979 | /* Packet length consistency check. */ | |
4980 | if (pnt != lim) | |
513386b5 | 4981 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4982 | |
513386b5 | 4983 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4984 | } |
4985 | ||
10ebe1ab MK |
4986 | /* |
4987 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4988 | * The mapping will be used during route processing. | |
4989 | * bgp_def: default bgp instance | |
4990 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4991 | */ | |
4992 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4993 | { | |
f6e07e1b | 4994 | uint32_t i = 0; |
10ebe1ab MK |
4995 | struct ecommunity_val *eval = NULL; |
4996 | struct listnode *node = NULL, *nnode = NULL; | |
4997 | struct ecommunity *ecom = NULL; | |
4998 | ||
4999 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5000 | for (i = 0; i < ecom->size; i++) { | |
5001 | eval = (struct ecommunity_val *)(ecom->val | |
5002 | + (i | |
5003 | * ECOMMUNITY_SIZE)); | |
5004 | map_vrf_to_rt(bgp_vrf, eval); | |
5005 | } | |
5006 | } | |
5007 | } | |
5008 | ||
5009 | /* | |
5010 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5011 | */ | |
5012 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5013 | { | |
f6e07e1b | 5014 | uint32_t i; |
10ebe1ab MK |
5015 | struct ecommunity_val *eval; |
5016 | struct listnode *node, *nnode; | |
5017 | struct ecommunity *ecom; | |
5018 | ||
5019 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5020 | for (i = 0; i < ecom->size; i++) { | |
5021 | struct vrf_irt_node *irt; | |
5022 | struct ecommunity_val eval_tmp; | |
5023 | ||
5024 | eval = (struct ecommunity_val *)(ecom->val | |
5025 | + (i | |
5026 | * ECOMMUNITY_SIZE)); | |
5027 | /* If using "automatic" RT, we only care about the | |
5028 | * local-admin sub-field. | |
5029 | * This is to facilitate using VNI as the RT for EBGP | |
5030 | * peering too. | |
5031 | */ | |
5032 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5033 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5034 | BGP_VRF_IMPORT_RT_CFGD)) | |
5035 | mask_ecom_global_admin(&eval_tmp, eval); | |
5036 | ||
5037 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5038 | if (irt) | |
5039 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5040 | } | |
5041 | } | |
5042 | } | |
5043 | ||
5044 | ||
128ea8ab | 5045 | /* |
5046 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5047 | * The mapping will be used during route processing. | |
5048 | */ | |
d62a17ae | 5049 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5050 | { |
f6e07e1b | 5051 | uint32_t i; |
d62a17ae | 5052 | struct ecommunity_val *eval; |
5053 | struct listnode *node, *nnode; | |
5054 | struct ecommunity *ecom; | |
128ea8ab | 5055 | |
d62a17ae | 5056 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5057 | for (i = 0; i < ecom->size; i++) { | |
5058 | eval = (struct ecommunity_val *)(ecom->val | |
5059 | + (i | |
5060 | * ECOMMUNITY_SIZE)); | |
5061 | map_vni_to_rt(bgp, vpn, eval); | |
5062 | } | |
5063 | } | |
128ea8ab | 5064 | } |
5065 | ||
5066 | /* | |
5067 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5068 | */ | |
d62a17ae | 5069 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5070 | { |
f6e07e1b | 5071 | uint32_t i; |
d62a17ae | 5072 | struct ecommunity_val *eval; |
5073 | struct listnode *node, *nnode; | |
5074 | struct ecommunity *ecom; | |
128ea8ab | 5075 | |
d62a17ae | 5076 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5077 | for (i = 0; i < ecom->size; i++) { | |
5078 | struct irt_node *irt; | |
5079 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5080 | |
d62a17ae | 5081 | eval = (struct ecommunity_val *)(ecom->val |
5082 | + (i | |
5083 | * ECOMMUNITY_SIZE)); | |
5084 | /* If using "automatic" RT, we only care about the | |
5085 | * local-admin sub-field. | |
5086 | * This is to facilitate using VNI as the RT for EBGP | |
5087 | * peering too. | |
5088 | */ | |
5089 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5090 | if (!is_import_rt_configured(vpn)) | |
5091 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5092 | |
d62a17ae | 5093 | irt = lookup_import_rt(bgp, &eval_tmp); |
5094 | if (irt) | |
5095 | unmap_vni_from_rt(bgp, vpn, irt); | |
5096 | } | |
5097 | } | |
128ea8ab | 5098 | } |
5099 | ||
5100 | /* | |
5101 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5102 | * The mapping will be used during route processing. | |
5103 | */ | |
d62a17ae | 5104 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5105 | { |
c581d8b0 | 5106 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5107 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5108 | |
d62a17ae | 5109 | /* Map RT to VNI */ |
5110 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5111 | } |
5112 | ||
5113 | /* | |
5114 | * Derive Export RT automatically for VNI. | |
5115 | */ | |
d62a17ae | 5116 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5117 | { |
c581d8b0 | 5118 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5119 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5120 | } |
5121 | ||
676f83b9 | 5122 | /* |
5123 | * Derive RD automatically for VNI using passed information - it | |
5124 | * is of the form RouterId:unique-id-for-vni. | |
5125 | */ | |
5126 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5127 | { | |
9e97ff03 CS |
5128 | if (is_vrf_rd_configured(bgp)) |
5129 | return; | |
5130 | ||
92708db6 | 5131 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5132 | } |
5133 | ||
128ea8ab | 5134 | /* |
5135 | * Derive RD automatically for VNI using passed information - it | |
5136 | * is of the form RouterId:unique-id-for-vni. | |
5137 | */ | |
d62a17ae | 5138 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5139 | { |
c44ab6f1 | 5140 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5141 | |
d62a17ae | 5142 | vpn->prd.family = AF_UNSPEC; |
5143 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5144 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5145 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5146 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5147 | } |
5148 | ||
7df407ed CS |
5149 | /* |
5150 | * Lookup L3-VNI | |
5151 | */ | |
5152 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5153 | { | |
5154 | struct list *inst = bm->bgp; | |
5155 | struct listnode *node; | |
5156 | struct bgp *bgp_vrf; | |
5157 | ||
5158 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5159 | if (bgp_vrf->l3vni == vni) | |
5160 | return true; | |
5161 | } | |
5162 | ||
5163 | return false; | |
5164 | } | |
5165 | ||
128ea8ab | 5166 | /* |
5167 | * Lookup VNI. | |
5168 | */ | |
d62a17ae | 5169 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5170 | { |
d62a17ae | 5171 | struct bgpevpn *vpn; |
5172 | struct bgpevpn tmp; | |
128ea8ab | 5173 | |
d62a17ae | 5174 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5175 | tmp.vni = vni; | |
5176 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5177 | return vpn; | |
128ea8ab | 5178 | } |
5179 | ||
5180 | /* | |
5181 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5182 | */ | |
d62a17ae | 5183 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5184 | struct in_addr originator_ip, |
5185 | vrf_id_t tenant_vrf_id, | |
5186 | struct in_addr mcast_grp) | |
128ea8ab | 5187 | { |
d62a17ae | 5188 | struct bgpevpn *vpn; |
128ea8ab | 5189 | |
d62a17ae | 5190 | if (!bgp) |
5191 | return NULL; | |
128ea8ab | 5192 | |
d62a17ae | 5193 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5194 | |
d62a17ae | 5195 | /* Set values - RD and RT set to defaults. */ |
5196 | vpn->vni = vni; | |
5197 | vpn->originator_ip = originator_ip; | |
29c53922 | 5198 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5199 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5200 | |
d62a17ae | 5201 | /* Initialize route-target import and export lists */ |
5202 | vpn->import_rtl = list_new(); | |
5203 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5204 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5205 | vpn->export_rtl = list_new(); |
5206 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5207 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5208 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5209 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5210 | |
d62a17ae | 5211 | /* Initialize EVPN route table. */ |
960035b2 | 5212 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5213 | |
d62a17ae | 5214 | /* Add to hash */ |
5215 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5216 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5217 | return NULL; | |
5218 | } | |
6a8657d0 MK |
5219 | |
5220 | /* add to l2vni list on corresponding vrf */ | |
5221 | bgpevpn_link_to_l3vni(vpn); | |
5222 | ||
c44ab6f1 AK |
5223 | bgp_evpn_vni_es_init(vpn); |
5224 | ||
d62a17ae | 5225 | QOBJ_REG(vpn, bgpevpn); |
5226 | return vpn; | |
128ea8ab | 5227 | } |
5228 | ||
5229 | /* | |
5230 | * Free a given VPN - called in multiple scenarios such as zebra | |
5231 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5232 | * This just frees appropriate memory, caller should have taken other | |
5233 | * needed actions. | |
5234 | */ | |
d62a17ae | 5235 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5236 | { |
c44ab6f1 | 5237 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5238 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5239 | bgp_table_unlock(vpn->route_table); |
5240 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5241 | list_delete(&vpn->import_rtl); |
5242 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5243 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5244 | hash_release(bgp->vnihash, vpn); |
5245 | QOBJ_UNREG(vpn); | |
5246 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5247 | } |
5248 | ||
50f74cf1 | 5249 | /* |
5250 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5251 | */ |
d62a17ae | 5252 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5253 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5254 | { |
40381db7 | 5255 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5256 | } |
5257 | ||
5258 | /* | |
50f74cf1 | 5259 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5260 | */ |
d62a17ae | 5261 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5262 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5263 | { |
40381db7 | 5264 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5265 | } |
5266 | ||
db0e1937 MK |
5267 | /* filter routes which have martian next hops */ |
5268 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5269 | { | |
0291c246 MK |
5270 | afi_t afi; |
5271 | safi_t safi; | |
9bcb3eef | 5272 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5273 | struct bgp_table *table; |
40381db7 | 5274 | struct bgp_path_info *pi; |
db0e1937 MK |
5275 | |
5276 | afi = AFI_L2VPN; | |
5277 | safi = SAFI_EVPN; | |
5278 | ||
5279 | /* Walk entire global routing table and evaluate routes which could be | |
5280 | * imported into this VPN. Note that we cannot just look at the routes | |
5281 | * for the VNI's RD - | |
5282 | * remote routes applicable for this VNI could have any RD. | |
5283 | */ | |
5284 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5285 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5286 | rd_dest = bgp_route_next(rd_dest)) { | |
5287 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5288 | if (!table) |
5289 | continue; | |
5290 | ||
9bcb3eef DS |
5291 | for (dest = bgp_table_top(table); dest; |
5292 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5293 | |
9bcb3eef | 5294 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5295 | pi = pi->next) { |
db0e1937 MK |
5296 | |
5297 | /* Consider "valid" remote routes applicable for | |
5298 | * this VNI. */ | |
40381db7 DS |
5299 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5300 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5301 | continue; |
9bcb3eef DS |
5302 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5303 | pi->sub_type, pi->attr, | |
5304 | dest)) { | |
b54892e0 | 5305 | const struct prefix *p = |
9bcb3eef | 5306 | bgp_dest_get_prefix(dest); |
db0e1937 | 5307 | |
b54892e0 DS |
5308 | if (bgp_debug_update(pi->peer, p, NULL, |
5309 | 1)) { | |
5310 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5311 | |
b54892e0 | 5312 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5313 | attr_str, |
5314 | sizeof(attr_str)); | |
db0e1937 | 5315 | |
db0e1937 | 5316 | zlog_debug( |
56ca3b5b | 5317 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5318 | bgp->vrf_id, dest, |
db0e1937 | 5319 | attr_str); |
b54892e0 | 5320 | } |
db0e1937 | 5321 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5322 | p, pi); |
db0e1937 | 5323 | |
9bcb3eef | 5324 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5325 | safi); |
db0e1937 | 5326 | } |
db0e1937 MK |
5327 | } |
5328 | } | |
5329 | } | |
5330 | ||
5331 | return 0; | |
5332 | } | |
5333 | ||
128ea8ab | 5334 | /* |
5335 | * Handle del of a local MACIP. | |
5336 | */ | |
d62a17ae | 5337 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5338 | struct ipaddr *ip, int state) |
128ea8ab | 5339 | { |
d62a17ae | 5340 | struct bgpevpn *vpn; |
5341 | struct prefix_evpn p; | |
9bcb3eef | 5342 | struct bgp_dest *dest; |
128ea8ab | 5343 | |
d62a17ae | 5344 | /* Lookup VNI hash - should exist. */ |
5345 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5346 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5347 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5348 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5349 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5350 | return -1; | |
5351 | } | |
128ea8ab | 5352 | |
d62a17ae | 5353 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5354 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5355 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5356 | delete_evpn_route(bgp, vpn, &p); | |
5357 | } else { | |
5358 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5359 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5360 | if (dest) | |
5361 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5362 | } |
128ea8ab | 5363 | |
d62a17ae | 5364 | return 0; |
128ea8ab | 5365 | } |
5366 | ||
5367 | /* | |
5368 | * Handle add of a local MACIP. | |
5369 | */ | |
d62a17ae | 5370 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5371 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5372 | { |
d62a17ae | 5373 | struct bgpevpn *vpn; |
5374 | struct prefix_evpn p; | |
128ea8ab | 5375 | |
d62a17ae | 5376 | /* Lookup VNI hash - should exist. */ |
5377 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5378 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5379 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5380 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5381 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5382 | return -1; | |
5383 | } | |
128ea8ab | 5384 | |
d62a17ae | 5385 | /* Create EVPN type-2 route and schedule for processing. */ |
5386 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5387 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5388 | flog_err( |
e50f7cfd | 5389 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5390 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5391 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5392 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5393 | ? "sticky gateway" | |
5394 | : "", | |
c0d72166 | 5395 | mac, ip, flags); |
d62a17ae | 5396 | return -1; |
5397 | } | |
128ea8ab | 5398 | |
d62a17ae | 5399 | return 0; |
128ea8ab | 5400 | } |
5401 | ||
e3b78da8 | 5402 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5403 | struct bgp *bgp_vrf) |
5404 | { | |
e3b78da8 | 5405 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5406 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5407 | |
5e53dce3 T |
5408 | bgp_evpn = bgp_get_evpn(); |
5409 | assert(bgp_evpn); | |
6a8657d0 | 5410 | |
6a8657d0 MK |
5411 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5412 | bgpevpn_link_to_l3vni(vpn); | |
5413 | } | |
5414 | ||
14e814ea CS |
5415 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5416 | struct ethaddr *svi_rmac, | |
5417 | struct ethaddr *vrr_rmac, | |
0483af6e | 5418 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5419 | ifindex_t svi_ifindex, |
5420 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5421 | { |
5422 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5423 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5424 | struct listnode *node = NULL; |
5425 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5426 | as_t as = 0; |
5427 | ||
3621ebc5 | 5428 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5429 | * auto-creatio |
5430 | */ | |
5e53dce3 T |
5431 | bgp_evpn = bgp_get_evpn(); |
5432 | if (!bgp_evpn) { | |
af4c2728 | 5433 | flog_err( |
e50f7cfd | 5434 | EC_BGP_NO_DFLT, |
3621ebc5 | 5435 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5436 | l3vni); |
fe1dc5a3 MK |
5437 | return -1; |
5438 | } | |
5e53dce3 | 5439 | as = bgp_evpn->as; |
fe1dc5a3 | 5440 | |
0437e105 | 5441 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5442 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5443 | if (!bgp_vrf) { |
5444 | ||
5445 | int ret = 0; | |
5446 | ||
5d5393b9 DL |
5447 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5448 | vrf_id == VRF_DEFAULT | |
5449 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5450 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5451 | switch (ret) { |
fe1dc5a3 | 5452 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5453 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5454 | "BGP instance is already running; AS is %u", |
5455 | as); | |
fe1dc5a3 MK |
5456 | return -1; |
5457 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5458 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5459 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5460 | return -1; |
5461 | } | |
5462 | ||
5463 | /* mark as auto created */ | |
5464 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5465 | } | |
5466 | ||
0483af6e | 5467 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5468 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5469 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5470 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5471 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5472 | |
14e814ea CS |
5473 | /* copy anycast MAC from VRR MAC */ |
5474 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5475 | /* copy sys RMAC from SVI MAC */ | |
5476 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5477 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5478 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5479 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5480 | ||
c0d72166 DS |
5481 | if (bgp_debug_zebra(NULL)) |
5482 | zlog_debug( | |
5483 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5484 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5485 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5486 | : "disable", | |
5487 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5488 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5489 | is_anycast_mac ? "Enable" : "Disable"); | |
5490 | ||
c48d9f5f | 5491 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5492 | if (filter) { |
c48d9f5f MK |
5493 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5494 | ||
10f70510 AD |
5495 | /* |
5496 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5497 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5498 | * that explicitly. | |
5499 | */ | |
5500 | } else { | |
5501 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5502 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5503 | ||
5504 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5505 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5506 | ||
5507 | /* | |
5508 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5509 | * flag, update all MACIP routes in this VNI | |
5510 | */ | |
5511 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5512 | update_all_type2_routes(bgp_evpn, vpn); | |
5513 | } | |
5514 | } | |
5515 | } | |
5516 | ||
530e8a6e | 5517 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5518 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5519 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5520 | else |
5521 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5522 | ||
c581d8b0 MK |
5523 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5524 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5525 | |
5526 | /* auto derive RD */ | |
676f83b9 | 5527 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5528 | |
6a8657d0 | 5529 | /* link all corresponding l2vnis */ |
5e53dce3 | 5530 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5531 | (void (*)(struct hash_bucket *, |
996c9314 | 5532 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5533 | bgp_vrf); |
5534 | ||
c48d9f5f MK |
5535 | /* Only update all corresponding type-2 routes if we are advertising two |
5536 | * labels along with type-2 routes | |
5537 | */ | |
5538 | if (!filter) | |
5539 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5540 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5541 | |
06d2e8f3 MK |
5542 | /* advertise type-5 routes if needed */ |
5543 | update_advertise_vrf_routes(bgp_vrf); | |
5544 | ||
5ba238b7 MK |
5545 | /* install all remote routes belonging to this l3vni into correspondng |
5546 | * vrf */ | |
5547 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5548 | |
5549 | return 0; | |
5550 | } | |
5551 | ||
996c9314 | 5552 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5553 | { |
5554 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5555 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5556 | struct listnode *node = NULL; |
18abc1eb | 5557 | struct listnode *next = NULL; |
f1f8b53c | 5558 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5559 | |
5560 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5561 | if (!bgp_vrf) { | |
af4c2728 | 5562 | flog_err( |
e50f7cfd | 5563 | EC_BGP_NO_DFLT, |
996c9314 LB |
5564 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5565 | l3vni); | |
fe1dc5a3 MK |
5566 | return -1; |
5567 | } | |
5568 | ||
5e53dce3 T |
5569 | bgp_evpn = bgp_get_evpn(); |
5570 | if (!bgp_evpn) { | |
af4c2728 | 5571 | flog_err( |
e50f7cfd | 5572 | EC_BGP_NO_DFLT, |
3621ebc5 | 5573 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5574 | l3vni); |
f1f8b53c MK |
5575 | return -1; |
5576 | } | |
5577 | ||
d846168d | 5578 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5579 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5580 | * routes. This will uninstalling the routes from zebra and decremnt the |
5581 | * bgp info count. | |
523cafc4 | 5582 | */ |
d846168d | 5583 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5584 | |
06d2e8f3 MK |
5585 | /* delete/withdraw all type-5 routes */ |
5586 | delete_withdraw_vrf_routes(bgp_vrf); | |
5587 | ||
fe1dc5a3 MK |
5588 | /* remove the l3vni from vrf instance */ |
5589 | bgp_vrf->l3vni = 0; | |
5590 | ||
5591 | /* remove the Rmac from the BGP vrf */ | |
5592 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5593 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5594 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5595 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5596 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5597 | |
530e8a6e | 5598 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5599 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5600 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5601 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5602 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5603 | } |
530e8a6e CS |
5604 | |
5605 | /* remove default export RT */ | |
5606 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5607 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5608 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5609 | } |
fe1dc5a3 | 5610 | |
f1f8b53c | 5611 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5612 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5613 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5614 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5615 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5616 | } |
5617 | } | |
fe1dc5a3 | 5618 | |
18abc1eb | 5619 | /* If any L2VNIs point to this instance, unlink them. */ |
5620 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5621 | bgpevpn_unlink_from_l3vni(vpn); | |
5622 | ||
ff9d54fb CS |
5623 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5624 | ||
fe1dc5a3 MK |
5625 | /* Delete the instance if it was autocreated */ |
5626 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5627 | bgp_delete(bgp_vrf); | |
5628 | ||
5629 | return 0; | |
5630 | } | |
5631 | ||
128ea8ab | 5632 | /* |
5633 | * Handle del of a local VNI. | |
5634 | */ | |
d62a17ae | 5635 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5636 | { |
d62a17ae | 5637 | struct bgpevpn *vpn; |
128ea8ab | 5638 | |
d62a17ae | 5639 | /* Locate VNI hash */ |
5640 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5641 | if (!vpn) { | |
1e00627b | 5642 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5643 | flog_warn( |
e50f7cfd | 5644 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5645 | "%u: VNI hash entry for VNI %u not found at DEL", |
5646 | bgp->vrf_id, vni); | |
d62a17ae | 5647 | return 0; |
5648 | } | |
128ea8ab | 5649 | |
d62a17ae | 5650 | /* Remove all local EVPN routes and schedule for processing (to |
5651 | * withdraw from peers). | |
5652 | */ | |
5653 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5654 | |
db0e1937 MK |
5655 | /* |
5656 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5657 | */ | |
5658 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5659 | ||
d62a17ae | 5660 | /* Clear "live" flag and see if hash needs to be freed. */ |
5661 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5662 | if (!is_vni_configured(vpn)) | |
5663 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5664 | |
d62a17ae | 5665 | return 0; |
128ea8ab | 5666 | } |
5667 | ||
5668 | /* | |
d1911c26 | 5669 | * Handle add (or update) of a local VNI. The VNI changes we care |
5670 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5671 | */ |
d62a17ae | 5672 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5673 | struct in_addr originator_ip, |
5674 | vrf_id_t tenant_vrf_id, | |
5675 | struct in_addr mcast_grp) | |
5676 | ||
d62a17ae | 5677 | { |
5678 | struct bgpevpn *vpn; | |
5679 | struct prefix_evpn p; | |
5680 | ||
d62a17ae | 5681 | /* Lookup VNI. If present and no change, exit. */ |
5682 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5683 | if (vpn) { |
29c53922 | 5684 | |
d1911c26 | 5685 | if (is_vni_live(vpn) |
5686 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5687 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5688 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5689 | /* Probably some other param has changed that we don't | |
5690 | * care about. */ | |
5691 | return 0; | |
5692 | ||
76d07c7a AK |
5693 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5694 | ||
d1911c26 | 5695 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5696 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5697 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5698 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5699 | bgpevpn_link_to_l3vni(vpn); |
5700 | } | |
29c53922 | 5701 | |
d1911c26 | 5702 | /* If tunnel endpoint IP has changed, update (and delete prior |
5703 | * type-3 route, if needed.) | |
5704 | */ | |
5705 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5706 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5707 | |
d1911c26 | 5708 | /* Update all routes with new endpoint IP and/or export RT |
5709 | * for VRFs | |
5710 | */ | |
5711 | if (is_vni_live(vpn)) | |
5712 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5713 | } |
5714 | ||
5715 | /* Create or update as appropriate. */ | |
5716 | if (!vpn) { | |
76d07c7a AK |
5717 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5718 | mcast_grp); | |
d62a17ae | 5719 | if (!vpn) { |
af4c2728 | 5720 | flog_err( |
e50f7cfd | 5721 | EC_BGP_VNI, |
d62a17ae | 5722 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5723 | bgp->vrf_id, vni); | |
5724 | return -1; | |
5725 | } | |
5726 | } | |
5727 | ||
db0e1937 | 5728 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5729 | if (is_vni_live(vpn)) |
5730 | return 0; | |
5731 | ||
d62a17ae | 5732 | /* Mark as "live" */ |
5733 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5734 | ||
db0e1937 MK |
5735 | /* tunnel is now active, add tunnel-ip to db */ |
5736 | bgp_tip_add(bgp, &originator_ip); | |
5737 | ||
5738 | /* filter routes as nexthop database has changed */ | |
5739 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5740 | ||
fd069644 DS |
5741 | /* |
5742 | * Create EVPN type-3 route and schedule for processing. | |
5743 | * | |
5744 | * RT-3 only if doing head-end replication | |
5745 | */ | |
833b8a50 AK |
5746 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5747 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5748 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5749 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5750 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5751 | "%u: Type3 route creation failure for VNI %u", | |
5752 | bgp->vrf_id, vni); | |
5753 | return -1; | |
5754 | } | |
d62a17ae | 5755 | } |
5756 | ||
5757 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5758 | * VNI, | |
5759 | * install them. | |
5760 | */ | |
5761 | install_routes_for_vni(bgp, vpn); | |
5762 | ||
d7d97010 MK |
5763 | /* If we are advertising gateway mac-ip |
5764 | It needs to be conveyed again to zebra */ | |
5765 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5766 | ||
df070e6f CS |
5767 | /* advertise svi mac-ip knob to zebra */ |
5768 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5769 | ||
d62a17ae | 5770 | return 0; |
b18825eb | 5771 | } |
14c1a7bf | 5772 | |
fd069644 DS |
5773 | /* |
5774 | * Handle change in setting for BUM handling. The supported values | |
5775 | * are head-end replication and dropping all BUM packets. Any change | |
5776 | * should be registered with zebra. Also, if doing head-end replication, | |
5777 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5778 | * to be dropped, the RT-3s must be withdrawn. | |
5779 | */ | |
5780 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5781 | { | |
5782 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5783 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5784 | "Flooding" : "Flooding Disabled"); | |
5785 | ||
5786 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5787 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5788 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5789 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5790 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5791 | } | |
5792 | ||
7724c0a1 | 5793 | /* |
5794 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5795 | * EVPN routes from peers. | |
5796 | */ | |
d62a17ae | 5797 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5798 | { |
e3b78da8 | 5799 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5800 | void *))cleanup_vni_on_disable, |
5801 | bgp); | |
7724c0a1 | 5802 | } |
5803 | ||
14c1a7bf | 5804 | /* |
5805 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5806 | * BGP instance (default) is being freed. | |
5807 | */ | |
d62a17ae | 5808 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5809 | { |
1525e99f | 5810 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5811 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5812 | bgp); |
5813 | ||
5814 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5815 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5816 | |
5817 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5818 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5819 | |
5820 | hash_free(bgp->vnihash); | |
d62a17ae | 5821 | bgp->vnihash = NULL; |
1525e99f | 5822 | |
6a154c88 DL |
5823 | list_delete(&bgp->vrf_import_rtl); |
5824 | list_delete(&bgp->vrf_export_rtl); | |
5825 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5826 | } |
5827 | ||
5828 | /* | |
5829 | * Initialization for EVPN | |
5830 | * Create | |
5831 | * VNI hash table | |
5832 | * hash for RT to VNI | |
14c1a7bf | 5833 | */ |
d62a17ae | 5834 | void bgp_evpn_init(struct bgp *bgp) |
5835 | { | |
5836 | bgp->vnihash = | |
5837 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5838 | bgp->import_rt_hash = | |
5839 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5840 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5841 | bgp->vrf_import_rt_hash = |
5842 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5843 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5844 | bgp->vrf_import_rtl = list_new(); |
5845 | bgp->vrf_import_rtl->cmp = | |
5846 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5847 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5848 | bgp->vrf_export_rtl = list_new(); |
5849 | bgp->vrf_export_rtl->cmp = | |
5850 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5851 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5852 | bgp->l2vnis = list_new(); |
64465785 | 5853 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5854 | /* By default Duplicate Address Dection is enabled. |
5855 | * Max-moves (N) 5, detection time (M) 180 | |
5856 | * default action is warning-only | |
5857 | * freeze action permanently freezes address, | |
5858 | * and freeze time (auto-recovery) is disabled. | |
5859 | */ | |
5860 | if (bgp->evpn_info) { | |
5861 | bgp->evpn_info->dup_addr_detect = true; | |
5862 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5863 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5864 | bgp->evpn_info->dad_freeze = false; | |
5865 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5866 | /* Initialize zebra vxlan */ |
5867 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5868 | /* Enable PIP feature by default for bgp vrf instance */ |
5869 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5870 | struct bgp *bgp_default; | |
5871 | ||
5872 | bgp->evpn_info->advertise_pip = true; | |
5873 | bgp_default = bgp_get_default(); | |
5874 | if (bgp_default) | |
5875 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5876 | } | |
85c8d83b | 5877 | } |
fd069644 DS |
5878 | |
5879 | /* Default BUM handling is to do head-end replication. */ | |
5880 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
5881 | |
5882 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 5883 | } |
10ebe1ab MK |
5884 | |
5885 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5886 | { | |
5887 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 5888 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 5889 | } |
44c69747 LK |
5890 | |
5891 | /* | |
5892 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5893 | */ | |
5f040085 | 5894 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5895 | { |
5896 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5897 | ||
5898 | if (!pfx || pfx->family != AF_EVPN) | |
5899 | return 0; | |
5900 | ||
5901 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5902 | return 0; | |
5903 | ||
5904 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5905 | } | |
7c312383 AD |
5906 | |
5907 | /* | |
5908 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5909 | */ | |
5a1ae2c2 | 5910 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5911 | { |
5912 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5913 | ||
5914 | /* | |
e11329ca | 5915 | * EVPN routes should be marked as valid only if the nexthop is |
5916 | * reachable. Only if this happens, the route should be imported | |
5917 | * (into VNI or VRF routing tables) and/or advertised. | |
5918 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5919 | * type-5 routes. It may be tweaked later on for other routes, or | |
5920 | * even removed completely when all routes are handled. | |
7c312383 AD |
5921 | */ |
5922 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5923 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5924 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5925 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5926 | return true; |
5927 | ||
5928 | return false; | |
5929 | } |